ML21035A213

NRC-2020-000123 - Resp 5 - Final, Combined CCS Modeling Reports 2012-2017 Part 2

ML21035A213
Person / Time
Site:	Turkey Point
Issue date:	01/21/2021
From:	NRC/OCIO
To:
Shared Package
ML21035A187	List: ML21035A186 ML21035A189 ML21035A190 ML21035A191 ML21035A192 ML21035A193 ML21035A194 ML21035A195 ML21035A196 ML21035A197 ML21035A198 ML21035A199 ML21035A201 ML21035A202 ML21035A203 ML21035A204 ML21035A205 ML21035A206 ML21035A207 ML21035A208 ML21035A210 ML21035A211 ML21035A212 ML21035A213 ML21035A214 ML21035A215 ML21035A216 ML21035A217 ML21035A218
References
NRC-2020-000123
Download: ML21035A213 (179)

Text

10002998.0011.04 Turkey Point Plant Comprehensive Post-Uprate Monitoring Report Units 3 & 4 Uprate Project March 31, 2016 Prepared for: Prepared by:

ecology and environment, inc.

Global Environmental Specialists

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 May 2015 and encompasses the Post-Uprate period. This period of time includes the increases in both CCS salinity and temperature (that were observed to begin in fall 2013), the drop in salinity due to the addition of L-31E water in the fall of 2014, and the subsequent rebound in salinity in the CCS.

The conceptual p model and associated calculations are ppredominantly y unchanged since last presented in the 2012 Comprehensive Pre-Uprate Monitoring Report. As such, only a brief summary of the model is provided below. In addition, model results and corresponding conclusions regarding the operation of the CCS, based on the current calibrated water and salt balance model, are provided herein. The Excel spreadsheet that comprises the model is provided in a separate data file.

5.3.1 Model Summary As Figure 5.3-1 depicts, the water balance of the control volume (i.e., the CCS) is comprised of seepage (lateral through the sides and vertical through the bottom), blowdown (additional water pumped from other units to the CCS), precipitation (including runoff from earth berms between canals), and evaporation. Other than evaporation and precipitation, these are the same mechanisms by which salt flows into and out of the CCS. The means by which water and/or salt is transferred (e.g., seepage, evaporation) is calculated using various equations provided in the 2012 Comprehensive Pre-Uprate Monitoring Report. Calculations were performed for a 57-month period from September 2010 through May 2015. Average flows of water and salt into and out of the control volume were calculated for each day of this period using hydrologic, water quality, and meteorological data measured within, beneath, and adjacent to the CCS. The average daily flows were summed to estimate the amount of water and salt that enters or exits the control volume during each month and the entire 57-month period. These calculations demonstrate and validate the conceptual model of the CCS and, in so doing, illustrate the hydrologic mechanisms by which the CCS functions.

Calculated water flows are reported in 106 gallons per day (mgd). The mass flux into or out of the control volume is calculated by multiplying the volumetric flow by the salinity of the body of water from which the water is flowing. Salinity from the same groundwater and surface water monitoring stations used in the 2012 Comprehensive Pre Uprate Report (FPL 2012a) were used in the calculations and reported in the practical salinity scale (PSS-78), which is equivalent to grams per liter (g/L). Calculated mass fluxes are reported in thousands of pounds per day (lb x 1,000/day).

Over time, the gain/loss of water and salt mass within the control volume results in a change in the control volumes water and salt mass storage. Increased water storage, for instance, occurs when more water enters the control volume than exits. Storage, then, can be estimated by summing all of the components of the water (and salt) balance. When the net flow is positive (into the control volume) during a specified period of time, the storage of control volume increases. Conversely, a net negative (out of the control volume) flow implies a decrease in storage during a specified time period.

5-6

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Another manner in which a change in storage can be estimated relies on direct measurements of water elevations and salinities within the control volume. A change in water elevation within the control volume can be calculated as a difference between water elevations at the beginning and end of a specified time period. The product of this change in water elevations and the surface area of the control volume provides an estimate of the change in the volume of water contained in the control volume during that period of time. Estimates of daily storage changes derived from this method are used to further calibrate the water and salt balance model to ensure an accurate simulation of temporal trends in CCS water elevation and salinity.

5.3.2 Model Calibration The individual components of the water and salt balance were simulated daily and summed for each month from September 2010 through May 2015, as well as for the collective 57-month period. The individual components of flow are summed in order to calculate a simulated change in volume for each month and for the 57-month period. These simulated changes in storage were compared with observed changes in CCS water and salt storage for each month and the entire calibration period. Errors between the simulated and observed monthly storage changes were minimized by adjusting key variables associated with the flow balance model; this process is called calibration. The calibration process ensures that the model can accurately reflect the average changes in CCS storage over the 57-month time frame while also effectively capturing day-to-day changes in CCS water and mass storage. Calibration of the water and salt balance model was achieved by adjusting hydraulic conductivities of the aquifer materials adjacent to and beneath the CCS that factor into the calculation of seepage to/from groundwater and Biscayne Bay. Additional adjustable parameters include the coefficients in the wind function (FPL 2012a), the amount of runoff that enters the control volume as a percentage of precipitation, the amount of Unit 5 cooling tower water that is lost to evaporation before entering the CCS, and the salinity of the Unit 5 blowdown as a percentage of seawater. The calibrated model parameter values are provided in Table 5.3-1.

The horizontal hydraulic conductivities laterally adjacent to the control volume were calibrated to range between 500 ft/day and 900 ft/day. The calibrated vertical conductivities beneath the control volume ranged from 0.1 ft/day to 4 ft/day. The horizontal hydraulic conductivities of the side faces of the CCS are relatively high due the assumed incising of highly permeable material that underlies the muck and Miami limestone by deeper canals. For the same reason, the northern discharge canals and return canals were calibrated to relatively high vertical hydraulic conductivities (4 ft/day and 3.8 ft/day, respectively). Lower vertical hydraulic conductivities were calibrated for the middle and southern portions of the discharge canals, as well as the southern portion of the return canals (0.1 ft/day).

A notable deviation from the conceptual CCS water and salt flow balance is the recognition of reduced flow in the plant discharge canals. In early 2014, FPL noted that water flow was quite low in some plant discharge canals. In some cases, it was observed that CCS water did not flow in parts of individual canals. The lack of flow in certain individual canals limits the intended function of the CCS as a radiator, such that water preferentially flows through other canals at a faster rate than normal. The greater rate of flow of CCS water in some canals inhibits the 5-7

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 process of evaporation and the cooling effect that evaporation provides to the CCS. This phenomenon was simulated by reducing the CCS discharge canals surface area between January 2014 and May 2015 by between 16% and 20%. Though coarse, this approximation accounts for both a physical reduction in surface area as well as the related limits on the evaporative process.

5.3.3 Model Results and Discussion Results of the simulated 57-month water and salt balance model are provided in Tables 5.3-2 and 5.3-3, respectively. Monthly balance results follow in Tables 5.3-4 and 5.3-5. The modeled net flow of water, as calculated by the summing the components of the water balance for the 57-month calibration period, is denoted as the Modeled Change in CCS Storage and was calculated to be an average outflow of 0.22 mgd over the 57-month calibration period (Table 5.3-2). The observed change in storage, which is the difference in the volume of water in the CCS between the final and first days of the calibration period, divided by the number of days in the period, was observed to be 0.54 mgd. Though the model underestimated a net outflow of water from the CCS over the whole time period, the residual error between the simulated and observed flow is very small (0.32 mgd). This error is small (0.3%) relative to the monthly net observed flows, which range from a net outflow of 46.6 mgd (October 2010) and a net inflow of 52.1 mgd (September 2010).

The model simulated a net influx of salt over the 57-month period at rate of 597 (lb x 1,000)/day.

The corresponding observed rate of salt inflow was calculated by multiplying the average observed salinity in the CCS on the final and first day of the calibration period by the corresponding CCS volumes on those days. The difference between these two products, divided by the number of days in the calibration period, shows that the net inflow of salt is about 405 (lb x 1,000)/day. The error associated with the mass flux is an overestimation by approximately 192 (lb x 1,000)/day. As in the case of water balance simulation, the magnitude of this overestimation is small (0.9%) relative to the range in monthly average flows; the monthly net mass fluxes range from an outflow of 13,790 (lb x 1,000)/day (October 2010) to an inflow of 8,659 (lb x 1,000)/day (June 2011). This error marks an improvement over an earlier version of the model (discussed in the 2014 Annual Post-Uprate Monitoring Report [FPL 2014a]).

Figures 5.3-2 and 5.3-3 illustrate the models ability to match the magnitude and direction of net monthly flows of water and salt, respectively. Figure 5.3-2 compares observed and modeled net monthly flows of water into and out of the CCS. There is a seasonal trend in observed flows to/from the CCS, where inflows are generally associated with the wet season and outflows are generally associated with the dry season. The model is able to replicate this trend reasonably well. However, there are isolated periods of time where the model does not accurately simulate the magnitude or direction of the net flow (e.g., March to July 2011, October 2013, January 2015). Figure 5.3-3 compares observed and modeled net monthly flows of salt into and out of the CCS. Like the modeled water flows, estimated salt mass fluxes generally match observed fluxes well, although there are individual months where the estimated mass flux is less accurate.

5-8

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Implicit in the models ability to simulate monthly net water and salt mass flows is the accurate simulation of daily flows to and from the CCS. Because the model is able to characterize the daily flows of water and salt, the model is able to estimate the daily changes in CCS water and salt storage. As previously mentioned, these changes in storage are associated with daily changes in CCS water levels and salinity. Figure 5.3-4 shows the model-calculated water level in the CCS, which varies over the period of record. These modeled water levels range between approximately -1.63 ft NAVD 88 and 0.81 ft NAVD 88 and reflect an average water level throughout the entire CCS. The observed CCS water levels over time are also shown in this figure; the observed values reflect the mean of daily-averaged water elevations across the seven sensors in the CCS. The daily-averaged observed water levels vary across a range similar to that of the simulated water levels (-1.71 ft NAVD 88 to 0.63 ft NAVD 88). Simulated water elevations are calculated by dividing the simulated daily change in CCS storage by the average daily CCS surface area and adding the resulting value (which reflects a change in water level) to the previous days simulated water elevation. It is evident from this figure that the model effectively captures the general trend in CCS water elevations over the 57-month period and accurately simulates average CCS water elevations throughout much of the calibration period.

Nevertheless, there were periods of time where the model either generally under-simulated observed water levels (late 2011 and 2013) or, conversely, over-simulated water levels (mid-2014 through May 2015).

Though the model over-simulated water levels toward the end of the model simulation, this error is relatively small. Moreover, the temporal fluctuations in water levels are reasonably well-matched. This is particularly relevant since this period of time includes fall 2014, when 914 million gallons of L-31E Canal water were pumped into the CCS over a 21-day duration. During this addition, the simulated increase in water levels (approximately 0.5 ft) closely matched the observed water level increase in the CCS (approximately 0.4 ft). The model also accounted for water pumped into the CCS from the Floridan Aquifer (PTF5 well #3) and Biscayne Aquifer (PW-1) and the associated changes in stage since July 2013 and January 2015, respectively.

Similar to the calculation of CCS water levels, changes in salt mass storage within the CCS can be used to calculate average CCS salinity changes over time. The simulated daily net flow of salt is divided by the simulated volume of water in the CCS, which results in a change in salinity.

This change in salinity is added to the simulated salinity calculated for the previous day to produce a simulated salinity for the current day. Like the simulated CCS water level, the model salinity reflects a representative daily salinity throughout the CCS. Figure 5.3-5 compares the simulated salinities to those observed in the CCS over the period of record. Observed salinities are the mean of daily averaged salinities measured in the CCS monitoring stations. The model under-simulated salinity between May 2012 and December 2013 and over-simulated between June 2014 and May 2015. However, these under- and over-simulations were generally small.

Moreover, the simulated temporal trends in salinity throughout much of the 57-month timeframe matched the temporal trends in the average observed CCS salinity.

As in the case of the simulation of water levels in the CCS, it is important to note that the model simulated salinity and daily changes during the November 2013 through September 2014 timeframe, when salinity increased from about 60 g/L to approximately 90 g/L. Moreover, the 5-9

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 modeled drop in salinity (11 g/L) due to the addition of L-31E Canal water from September to October 2014 closely matched the observed drop in salinity (13 g/L). In addition, the subsequent increase in salinity (October 2014 through April 2015) was replicated by the model, as was the subsequent significant drop in salinity attributable to a late-April rainfall event. The fact that the model matches these notable fluctuations in CCS salinity reinforces the conceptual model, which suggests that changes in CCS salinity are predicated solely on changes in the flow of water into and out of the CCS. Again, changes attributable to the addition of Floridan Aquifer water from PTF5 #3 and Biscayne Aquifer water from PW-1 are accounted for by the model with reasonable accuracy.

Given that the simulated timeframe is nearly evenly partitioned into the Pre-Uprate, Interim, and Post-Uprate periods, it is appropriate to discuss the water and salt balance model results in terms of these operational periods. Inspection of Figure 5.3-2 does not reveal a marked difference in water changes in water storage (inflows and outflows) among the three operating periods.

Perhaps the only distinguishing characteristic is a significant decrease in storage (outflow) that occurs at the inception of the Post-Uprate period in June 2013. This outflow is attributable to increase in seepage to groundwater and in evaporative losses. Figure 5.3-3, however, suggests that mass accrues at a greater rate during the Post-Uprate period than in the other two operating periods. This is consistent with the increase in CCS salinity during this timeframe.

Tables 5.3-6 and 5.3-7 summarize the simulated water and salt flow balances for the Pre-Uprate, Interim, and Post-Uprate periods. Though the net water and salt balances are on the same order of magnitude for each of the three operating periods, the magnitude of the inflows and outflows are fairly different. For instance, the magnitude of water inflows and outflows are greater during the Pre-Uprate and Post-Uprate periods than in the Interim period. Likewise, the exchanges of salt are generally greater in the Pre-Uprate and Post-Uprate periods than in the Interim period.

The modeled water balances match the corresponding observed balances reasonably well in each of the operating periods. Though the match between modeled and observed salt mass balances appears to be slightly degraded when compared to the water balance match, in fact the associated salt mass balance error is relatively low in the context of the range of the individual mass balance components (e.g. maximum inflow minus maximum outflow). Additionally, relative to the variability in observed monthly net salt mass flows, the error between the simulated and observed mass balance for these three periods is fairly low The accurate simulation of changing CCS inflows, outflows, water elevations, and salinities is complex due to the different components of the balance model and their varying impacts upon CCS water and salt storage. For instance, vertical flows into and out of the control volume are generally larger than horizontal flows and have a greater impact on CCS water elevation. The salinity of inflowing water, however, can vary depending upon the source of the water. For example, horizontal flow from the west (L-31E Canal) is non-saline and has a pronounced mitigating impact upon CCS salinities; vertical flow from groundwater beneath portions of the plant discharge canals is saline to hyper-saline and generally increases the salinity of the CCS.

The correct balance of both water and salt mass flow is difficult to estimate in the model. In addition, the simulated timeframe encompasses Pre-Uprate, Interim, and Post-Uprate periods, during which CCS water salinity and temperatures fluctuate significantly. The model addresses 5-10

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 associated impacts on the CCS by explicitly simulating the effects of water/air temperature gradients on evaporation. Whereas numerous sources and sinks of water, varying salinities, and changes in water temperature do increase model complexity, the need to accurately simulate these different components of CCS operation constrains the number of possible solutions.

Though the model is able to simulate the complex dynamics associated with the CCS over a 57-month timeframe with reasonable accuracy, there are periods of time where the simulated flows of water and salt do not accurately reflect observed conditions. Consequently, the simulated water level and salinities in the CCS deviate from those that have been observed at various times in the simulation period. However, the overall performance of the model reinforces its utility as a tool for understanding how the CCS has and will operate under varying meteorological, hydrological, and operational conditions. This is best demonstrated by the fact that the same conceptual model employed to characterize changes in CCS storage of water and salt during the Pre-Uprate period is used to explain changes in water and salt storage during the Post-Uprate period, a period of time during which water levels have generally decreased, salinities have dramatically increased, water temperatures have risen, and algal blooms have developed within the CCS. Nevertheless, the exchanges of flows between the CCS and surrounding environment during Post-Uprate period are governed by the same hydrologic principles as during the Pre-Uprate period.

This robustness and accuracy in the model underpins FPLs understanding of processes that control the CCS and the manner in which the CCS interacts with the adjacent aquifer and water bodies. This accuracy in simulating the historical changes within the CCS bolsters confidence in the models utility as a tool to evaluate the sensitivity of CCS operations to certain factors, such as changes in operation, drought conditions, storm events, added water, and other potential environmental stresses. Additionally, the model accuracy validates the fact that the most appropriate data are being collected to effectively capture CCS operations, identify interactions between the CCS and the surrounding environment, and support FPLs comprehension of historical and future operations of the CCS. This model continues to be refined and improved with further information on the CCS.

5-11

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 TABLES

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-1. Calibration Parameters.

Calibrated Parameter Name Value Units Vertical Hydraulic Conductivity (Zone A) 4.0 ft/day Vertical Hydraulic Conductivity (Zone B) 0.1 ft/day Vertical Hydraulic Conductivity (Zone C) 0.1 ft/day Vertical Hydraulic Conductivity (Zone D) 3.0 ft/day West Face Hydraulic Conductivity 825 ft/day East Face Hydraulic Conductivity 900 ft/day North Face Hydraulic Conductivity 500 ft/day South Face Hydraulic Conductivity 675 ft/day Evaporation Modifier (Factor Multiplier) 0.71 Runoff Modifier (as % of Precipitation) 32%

Blowdown Evaporation Factor 40%

Blowdown Concentration (as % of Seawater) 0.25 5-12

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-2. Calculated Fluid Flows from Water Budget Components.

September 2010 to May 2015 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.77 1329.68 E. Seepage 13.59 23557.82 N. Seepage 0.01 16.37 S. Seepage 3.30 5730.53 Bottom Seepage 8.87 15378.74 Precipitation and Runoff 19.52 33846.97 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.49 851.01 Unit 5 Blowdown 1.96 3393.11 ID Pumping 3.58 6206.00 Added Water (e.g. L-31E) 1.93 3352.82 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 54.02 93663.04 W. Seepage -0.06 -4.67 E. Seepage -1.77 -5941.48 N. Seepage -0.01 -10.45 S. Seepage 0.00 -44.05 Bottom Seepage -11.09 -19504.75 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -31.49 -68542.75 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -44.43 -94047.87 Modeled Change in CCS Storage: -0.22 -384.83 Observed Change -0.54 -938.00 Key:

CCS = Cooling Canal System.

gal = Gallon.

ID = Interceptor Ditch.

MGD = Million gallons per day.

5-13

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-3. Calculated Mass Flows from Salt Budget Components.

September 2010 to May 2015 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 6.12 10617.41 E. Seepage 3874.04 6717584.84 N. Seepage 1.90 3288.71 S. Seepage 664.37 1152011.09 Bottom Seepage 2471.89 4286258.31 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 142.89 247772.59 ID Pumped Water 360.30 624756.49 Added Water (e.g. L-31E) 219.43 380491.12 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 7740.93 13422780.57 W. Seepage -46.15 -80019.11 E. Seepage -1467.02 -2543816.50 N. Seepage -3.32 -5753.07 S. Seepage -11.44 -19830.75 Bottom Seepage -5615.47 -9737218.65 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -7143.39 -12386638.08 Modeled Change in CCS Storage: 597.54 1036142.49 Observed Change 404.70 701742.27 Key:

CCS = Cooling Canal System.

ID = Interceptor Ditch.

lb = Pound(s).

5-14

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

September 2010 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.63 18.92 E. Seepage 11.48 344.30 N. Seepage 0.02 0.45 S. Seepage 3.43 102.78 Bottom Seepage 8.21 246.36 Into CCS Precipitation and Runoff 77.48 2324.42 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.29 8.64 Unit 5 Blowdown 1.96 58.73 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 103.49 3104.60 W. Seepage 0.00 0.00 E. Seepage -5.01 -150.18 N. Seepage 0.00 -0.08 S. Seepage 0.00 0.00 Bottom Seepage -6.05 -181.43 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -39.24 -1177.31 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -50.30 -1509.00 Modeled Change in CCS Storage: 53.19 1595.60 Observed Change 52.14 1564.08 Key:

CCS = Cooling Canal System.

gal = Gallon.

ID = Interceptor Ditch.

MGD = Million gallons per day.

5-15

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

October 2010 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.22 6.82 E. Seepage 0.72 22.35 N. Seepage 0.00 0.15 S. Seepage 2.75 85.32 Bottom Seepage 5.48 169.95 Into CCS Precipitation and Runoff 13.40 415.34 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.29 8.93 Blowdown 1.49 46.21 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 24.36 755.07 W. Seepage -0.01 -0.28 E. Seepage -21.35 -661.91 N. Seepage -0.01 -0.19 S. Seepage -0.05 -1.53 Bottom Seepage -19.27 -597.45 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -30.81 -955.14 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -71.50 -2216.51 Modeled Change in CCS Storage: -47.14 -1461.45 Observed Change -46.60 -1444.52 5-16

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

November 2010 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.26 7.92 E. Seepage 4.72 141.59 N. Seepage 0.00 0.14 S. Seepage 2.39 71.78 Bottom Seepage 1.43 42.94 Into CCS Precipitation and Runoff 26.53 795.80 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.29 8.64 Blowdown 1.00 29.97 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 36.63 1098.78 W. Seepage -0.06 -1.73 E. Seepage -6.82 -204.53 N. Seepage 0.00 -0.11 S. Seepage -0.03 -0.89 Bottom Seepage -13.30 -398.86 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -30.18 -905.40 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 0.00 0.00 ID Pumping Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -50.38 -1511.52 Modeled Change in CCS Storage: -13.76 -412.74 Observed Change -5.02 -150.50 5-17

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

December 2010 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.74 22.85 E. Seepage 16.54 512.73 N. Seepage 0.00 0.00 S. Seepage 2.17 67.16 Bottom Seepage 1.58 48.88 Into CCS Precipitation and Runoff 3.74 115.80 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.29 8.93 Blowdown 1.44 44.66 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 26.48 821.00 W. Seepage 0.00 0.00 E. Seepage -0.44 -13.72 N. Seepage -0.01 -0.41 S. Seepage -0.01 -0.18 Bottom Seepage -15.96 -494.83 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -28.78 -892.12 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -45.20 -1401.25 Modeled Change in CCS Storage: -18.72 -580.25 Observed Change -12.72 -394.29 5-18

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

January 2011 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 1.53 47.29 E. Seepage 9.42 291.89 N. Seepage 0.00 0.00 S. Seepage 1.87 57.82 Bottom Seepage 2.08 64.43 Into CCS Precipitation and Runoff 19.13 593.17 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.29 8.93 Blowdown 1.64 50.81 ID Pumping 4.91 152.24 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 40.86 1266.58 W. Seepage 0.00 0.00 E. Seepage -3.70 -114.58 N. Seepage -0.01 -0.45 S. Seepage 0.00 0.00 Bottom Seepage -18.51 -573.86 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -27.80 -861.81 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -50.02 -1550.70 Modeled Change in CCS Storage: -9.17 -284.12 Observed Change -2.54 -78.88 5-19

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

February 2011 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 1.09 30.53 E. Seepage 23.22 650.20 N. Seepage 0.00 0.00 S. Seepage 3.78 105.80 Bottom Seepage 7.17 200.74 Into CCS Precipitation and Runoff 0.69 19.22 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.29 8.06 Blowdown 1.39 38.92 ID Pumping 2.25 63.03 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 39.87 1116.49 W. Seepage 0.00 0.00 E. Seepage -0.35 -9.70 N. Seepage -0.02 -0.56 S. Seepage 0.00 0.00 Bottom Seepage -20.78 -581.75 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -33.42 -935.67 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -54.56 -1527.68 Modeled Change in CCS Storage: -14.69 -411.19 Observed Change -14.26 -399.40 5-20

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

March 2011 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 1.22 37.97 E. Seepage 18.92 586.39 N. Seepage 0.00 0.08 S. Seepage 4.14 128.24 Bottom Seepage 7.82 242.27 Into CCS Precipitation and Runoff 7.02 217.53 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.29 8.93 Blowdown 1.33 41.10 ID Pumping 9.37 290.40 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 50.09 1552.91 W. Seepage 0.00 0.00 E. Seepage -0.28 -8.56 N. Seepage 0.00 -0.14 S. Seepage 0.00 0.00 Bottom Seepage -18.45 -571.91 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -34.86 -1080.73 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -53.59 -1661.34 Modeled Change in CCS Storage: -3.50 -108.43 Observed Change 3.19 99.02 5-21

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

April 2011 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.97 29.01 E. Seepage 26.45 793.57 N. Seepage 0.00 0.10 S. Seepage 5.07 152.07 Bottom Seepage 12.05 361.43 Into CCS Precipitation and Runoff 10.21 306.21 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.29 8.64 Blowdown 2.26 67.89 ID Pumping 7.46 223.80 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 64.76 1942.71 W. Seepage 0.00 0.00 E. Seepage 0.00 0.00 N. Seepage 0.00 -0.08 S. Seepage 0.00 0.00 Bottom Seepage -19.71 -591.19 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -36.05 -1081.54 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -55.76 -1672.82 Modeled Change in CCS Storage: 9.00 269.90 Observed Change -7.85 -235.45 5-22

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

May 2011 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 1.25 38.65 E. Seepage 42.98 1332.39 N. Seepage 0.00 0.00 S. Seepage 5.91 183.26 Bottom Seepage 20.72 642.30 Into CCS Precipitation and Runoff 6.82 211.30 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.29 8.93 Blowdown 2.32 71.85 ID Pumping 14.81 459.13 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 95.09 2947.82 W. Seepage 0.00 0.00 E. Seepage 0.00 0.00 N. Seepage -0.04 -1.19 S. Seepage 0.00 0.00 Bottom Seepage -52.85 -1638.30 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -42.55 -1319.03 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -95.44 -2958.52 Modeled Change in CCS Storage: -0.35 -10.70 Observed Change 11.51 356.77 5-23

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

June 2011 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 1.38 41.40 E. Seepage 34.62 1038.51 N. Seepage 0.00 0.00 S. Seepage 5.76 172.73 Bottom Seepage 21.40 642.01 Into CCS Precipitation and Runoff 7.90 237.08 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.53 15.99 Blowdown 2.04 61.20 ID Pumping 16.13 483.83 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 89.76 2692.75 W. Seepage 0.00 0.00 E. Seepage -0.01 -0.24 N. Seepage -0.03 -1.02 S. Seepage 0.00 0.00 Bottom Seepage -44.27 -1327.96 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -45.18 -1355.26 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -89.48 -2684.48 Modeled Change in CCS Storage: 0.28 8.27 Observed Change 10.30 309.07 5-24

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

July 2011 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 1.70 52.59 E. Seepage 4.33 134.19 N. Seepage 0.00 0.00 S. Seepage 1.79 55.58 Bottom Seepage 4.26 132.21 Into CCS Precipitation and Runoff 44.51 1379.89 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.54 16.59 Blowdown 2.26 70.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 59.39 1841.05 W. Seepage 0.00 0.00 E. Seepage -10.96 -339.74 N. Seepage -0.01 -0.43 S. Seepage -0.12 -3.86 Bottom Seepage -14.71 -455.93 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -46.46 -1440.12 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -72.26 -2240.09 Modeled Change in CCS Storage: -12.87 -399.04 Observed Change 9.24 286.59 5-25

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

August 2011 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 1.01 31.42 E. Seepage 12.59 390.34 N. Seepage 0.00 0.13 S. Seepage 3.46 107.17 Bottom Seepage 4.96 153.82 Into CCS Precipitation and Runoff 37.20 1153.08 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.53 16.36 Blowdown 2.08 64.50 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 61.83 1916.83 W. Seepage 0.00 -0.05 E. Seepage -2.36 -73.13 N. Seepage 0.00 -0.03 S. Seepage 0.00 0.00 Bottom Seepage -4.17 -129.14 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -44.38 -1375.79 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -50.91 -1578.14 Modeled Change in CCS Storage: 10.93 338.68 Observed Change 20.17 625.23 5-26

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

September 2011 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.72 21.49 E. Seepage 9.09 272.63 N. Seepage 0.00 0.02 S. Seepage 2.83 85.04 Bottom Seepage 2.74 82.09 Into CCS Precipitation and Runoff 36.97 1109.02 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.55 16.55 Blowdown 1.96 58.73 ID Pumping 5.74 172.08 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 60.59 1817.64 W. Seepage -0.02 -0.61 E. Seepage -1.84 -55.24 N. Seepage -0.01 -0.21 S. Seepage 0.00 0.00 Bottom Seepage -8.50 -254.92 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -44.71 -1341.33 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -55.08 -1652.30 Modeled Change in CCS Storage: 5.51 165.34 Observed Change -5.14 -154.17 5-27

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

October 2011 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.65 20.10 E. Seepage 5.60 173.66 N. Seepage 0.00 0.11 S. Seepage 3.35 103.76 Bottom Seepage 5.71 176.94 Into CCS Precipitation and Runoff 52.19 1617.81 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.52 16.21 Blowdown 1.49 46.21 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 69.51 2154.81 W. Seepage 0.00 0.00 E. Seepage -8.89 -275.64 N. Seepage -0.01 -0.24 S. Seepage 0.00 0.00 Bottom Seepage -10.32 -319.94 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -32.80 -1016.88 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -52.02 -1612.71 Modeled Change in CCS Storage: 17.49 542.10 Observed Change 8.79 272.51 5-28

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

November 2011 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.41 12.17 E. Seepage 13.09 392.76 N. Seepage 0.01 0.22 S. Seepage 3.05 91.39 Bottom Seepage 5.29 158.61 Into CCS Precipitation and Runoff 1.22 36.63 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.47 14.14 Blowdown 1.00 29.97 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 24.53 735.89 W. Seepage 0.00 -0.01 E. Seepage -0.97 -29.08 N. Seepage 0.00 -0.07 S. Seepage 0.00 0.00 Bottom Seepage -3.87 -116.07 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -34.49 -1034.58 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -39.33 -443.93 Modeled Change in CCS Storage: -14.80 291.96 Observed Change -25.56 -766.91 5-29

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

December 2011 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.89 27.63 E. Seepage 19.03 589.82 N. Seepage 0.01 0.16 S. Seepage 3.40 105.51 Bottom Seepage 5.84 180.97 Into CCS Precipitation and Runoff 1.75 54.20 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.61 18.76 Blowdown 1.44 44.66 ID Pumping 9.14 283.37 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 42.10 1305.07 W. Seepage 0.00 0.00 E. Seepage -0.20 -6.09 N. Seepage 0.00 -0.13 S. Seepage 0.00 0.00 Bottom Seepage -13.18 -408.58 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -30.95 -959.30 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -44.33 -1374.09 Modeled Change in CCS Storage: -2.23 -69.03 Observed Change -11.66 -361.51 5-30

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

January 2012 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 1.44 44.63 E. Seepage 22.89 709.62 N. Seepage 0.00 0.02 S. Seepage 3.76 116.71 Bottom Seepage 8.86 274.53 Into CCS Precipitation and Runoff 2.78 86.27 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.59 18.37 Blowdown 1.77 55.00 ID Pumping 15.39 476.96 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 57.49 1782.10 W. Seepage 0.00 0.00 E. Seepage -0.03 -0.88 N. Seepage -0.02 -0.54 S. Seepage 0.00 0.00 Bottom Seepage -29.29 -908.09 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -32.66 -1012.42 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -62.00 -1921.92 Modeled Change in CCS Storage: -4.51 -139.82 Observed Change -9.98 -309.33 5-31

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

February 2012 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 1.08 31.33 E. Seepage 10.96 317.73 N. Seepage 0.01 0.23 S. Seepage 2.75 79.68 Bottom Seepage 5.10 147.91 Into CCS Precipitation and Runoff 34.97 1014.27 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.52 15.17 Blowdown 1.56 45.36 ID Pumping 1.50 43.56 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 58.46 1695.22 W. Seepage 0.00 0.00 E. Seepage -1.48 -43.02 N. Seepage 0.00 -0.03 S. Seepage 0.00 0.00 Bottom Seepage -8.57 -248.40 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -31.99 -927.63 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -42.04 -1219.08 Modeled Change in CCS Storage: 16.42 476.15 Observed Change 12.36 358.44 5-32

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

March 2012 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.79 24.47 E. Seepage 16.36 507.04 N. Seepage 0.02 0.67 S. Seepage 3.86 119.81 Bottom Seepage 10.20 316.28 Into CCS Precipitation and Runoff 2.38 73.78 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.35 10.99 Blowdown 1.97 61.12 ID Pumping 4.10 126.99 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 40.04 1241.16 W. Seepage 0.00 0.00 E. Seepage -0.48 -14.94 N. Seepage 0.00 -0.01 S. Seepage 0.00 0.00 Bottom Seepage -7.38 -228.72 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -33.30 -1032.35 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -41.16 -1276.03 Modeled Change in CCS Storage: -1.12 -34.87 Observed Change -11.24 -348.30 5-33

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

April 2012 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 1.26 37.86 E. Seepage 16.15 484.45 N. Seepage 0.01 0.25 S. Seepage 3.78 113.46 Bottom Seepage 11.02 330.61 Into CCS Precipitation and Runoff 50.10 1502.87 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.39 11.73 Blowdown 1.96 58.81 ID Pumping 9.76 292.86 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 94.43 2832.90 W. Seepage 0.00 0.00 E. Seepage -0.25 -7.57 N. Seepage 0.00 -0.05 S. Seepage 0.00 0.00 Bottom Seepage -13.01 -390.18 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -35.26 -1057.88 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -48.52 -1455.68 Modeled Change in CCS Storage: 45.91 1377.21 Observed Change 33.69 1010.73 5-34

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

May 2012 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 1.06 33.01 E. Seepage 0.50 15.35 N. Seepage 0.02 0.74 S. Seepage 1.26 39.07 Bottom Seepage 11.57 358.62 Into CCS Precipitation and Runoff 40.57 1257.52 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.41 12.61 Blowdown 1.94 60.08 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 57.32 1777.00 W. Seepage 0.00 0.00 E. Seepage -13.27 -411.50 N. Seepage 0.00 -0.02 S. Seepage 0.00 -0.06 Bottom Seepage -9.28 -287.64 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -33.70 -1044.78 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -56.26 -1744.00 Modeled Change in CCS Storage: 1.06 33.00 Observed Change -2.89 -89.62 5-35

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

June 2012 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.57 17.18 E. Seepage 3.39 101.59 N. Seepage 0.02 0.50 S. Seepage 2.23 66.92 Bottom Seepage 8.87 265.96 Into CCS Precipitation and Runoff 30.36 910.93 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.29 8.66 Blowdown 2.07 61.95 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 47.79 1433.70 W. Seepage 0.00 -0.06 E. Seepage -9.13 -273.94 N. Seepage 0.00 -0.02 S. Seepage 0.00 0.00 Bottom Seepage -7.01 -210.24 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -34.00 -1019.97 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -50.14 -1504.23 Modeled Change in CCS Storage: -2.35 -70.53 Observed Change -3.50 -105.04 5-36

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

July 2012 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.92 28.53 E. Seepage 0.02 0.56 N. Seepage 0.02 0.72 S. Seepage 1.41 43.82 Bottom Seepage 14.13 438.04 Into CCS Precipitation and Runoff 29.22 905.74 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.34 10.51 Blowdown 2.13 66.14 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 48.20 1494.06 W. Seepage 0.00 0.00 E. Seepage -11.08 -343.33 N. Seepage 0.00 0.00 S. Seepage -0.06 -1.97 Bottom Seepage -9.56 -296.50 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -40.50 -1255.63 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -61.21 -1897.42 Modeled Change in CCS Storage: -13.01 -403.36 Observed Change -7.97 -247.19 5-37

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

August 2012 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.94 29.28 E. Seepage 5.79 179.38 N. Seepage 0.02 0.64 S. Seepage 2.52 77.97 Bottom Seepage 12.31 381.65 Into CCS Precipitation and Runoff 39.51 1224.70 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.27 8.51 Blowdown 2.20 68.22 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 63.56 1970.35 W. Seepage 0.00 0.00 E. Seepage -6.13 -190.09 N. Seepage 0.00 0.00 S. Seepage -0.03 -0.91 Bottom Seepage -6.38 -197.72 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -39.72 -1231.38 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -52.26 -1620.10 Modeled Change in CCS Storage: 11.30 350.25 Observed Change 21.72 673.22 5-38

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

September 2012 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.64 19.16 E. Seepage 2.51 75.25 N. Seepage 0.01 0.37 S. Seepage 2.29 68.62 Bottom Seepage 7.77 233.02 Into CCS Precipitation and Runoff 29.60 887.85 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.73 22.00 Blowdown 1.93 57.86 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 45.47 1364.14 W. Seepage -0.01 -0.17 E. Seepage -10.00 -300.02 N. Seepage 0.00 0.00 S. Seepage -0.03 -1.04 Bottom Seepage -10.96 -328.68 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -39.33 -1180.03 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -60.33 -1809.94 Modeled Change in CCS Storage: -14.86 -445.80 Observed Change -5.35 -160.61 5-39

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

October 2012 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.27 8.34 E. Seepage 19.18 594.67 N. Seepage 0.02 0.62 S. Seepage 3.54 109.70 Bottom Seepage 14.06 435.85 Into CCS Precipitation and Runoff 14.07 436.27 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.89 27.69 Blowdown 1.89 58.47 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 53.92 1671.61 W. Seepage -0.02 -0.48 E. Seepage -4.46 -138.26 N. Seepage 0.00 -0.06 S. Seepage -0.02 -0.54 Bottom Seepage -5.43 -168.36 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -39.07 -1211.07 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -48.99 -1518.76 Modeled Change in CCS Storage: 4.93 152.85 Observed Change 7.58 235.01 5-40

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

November 2012 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.37 11.23 E. Seepage 7.77 233.12 N. Seepage 0.03 0.88 S. Seepage 2.97 89.15 Bottom Seepage 13.66 409.80 Into CCS Precipitation and Runoff 1.70 51.08 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.79 23.74 Blowdown 1.31 39.39 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 28.61 858.38 W. Seepage 0.00 0.00 E. Seepage -2.49 -74.57 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -2.45 -73.61 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -28.57 -856.97 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -33.50 -1005.15 Modeled Change in CCS Storage: -4.89 -146.77 Observed Change -3.88 -116.28 5-41

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

December 2012 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.73 22.60 E. Seepage 0.43 13.27 N. Seepage 0.02 0.57 S. Seepage 1.38 42.89 Bottom Seepage 7.59 235.25 Into CCS Precipitation and Runoff 1.84 56.99 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.50 15.62 Blowdown 1.49 46.34 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 13.98 433.51 W. Seepage 0.00 0.00 E. Seepage -8.03 -248.97 N. Seepage 0.00 0.00 S. Seepage 0.00 -0.02 Bottom Seepage -5.51 -170.70 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -23.23 -720.01 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -36.76 -1139.70 Modeled Change in CCS Storage: -22.78 -706.18 Observed Change -28.66 -888.55 5-42

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

January 2013 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.83 25.62 E. Seepage 7.15 221.66 N. Seepage 0.02 0.57 S. Seepage 3.21 99.43 Bottom Seepage 8.15 252.64 Into CCS Precipitation and Runoff 1.04 32.31 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.52 16.25 Blowdown 1.74 53.89 ID Pumping 2.40 74.25 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 25.05 776.62 W. Seepage 0.00 0.00 E. Seepage -2.40 -74.34 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -1.69 -52.47 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -24.23 -750.99 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -28.32 -877.80 Modeled Change in CCS Storage: -3.26 -101.18 Observed Change -10.70 -331.69 5-43

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

February 2013 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.93 26.13 E. Seepage 9.75 273.11 N. Seepage 0.01 0.37 S. Seepage 3.44 96.40 Bottom Seepage 7.50 209.97 Into CCS Precipitation and Runoff 5.37 150.43 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.34 9.50 Blowdown 1.63 45.65 ID Pumping 8.45 236.52 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 37.43 1048.09 W. Seepage 0.00 0.00 E. Seepage -2.76 -77.32 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -6.60 -184.72 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -23.28 -651.88 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -32.64 -913.92 Modeled Change in CCS Storage: 4.79 134.17 Observed Change 1.10 30.86 5-44

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

March 2013 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.77 23.74 E. Seepage 20.14 624.25 N. Seepage 0.01 0.18 S. Seepage 4.28 132.63 Bottom Seepage 12.61 390.87 Into CCS Precipitation and Runoff 5.13 158.93 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.52 16.05 Blowdown 1.92 59.67 ID Pumping 7.41 229.77 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 52.78 1636.09 W. Seepage 0.00 0.00 E. Seepage 0.00 0.00 N. Seepage 0.00 -0.13 S. Seepage 0.00 0.00 Bottom Seepage -11.51 -356.90 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -27.64 -856.78 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -39.16 -1213.81 Modeled Change in CCS Storage: 13.62 422.28 Observed Change 3.84 119.01 5-45

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

April 2013 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.95 28.47 E. Seepage 23.12 693.51 N. Seepage 0.00 0.00 S. Seepage 3.52 105.47 Bottom Seepage 7.55 226.58 Into CCS Precipitation and Runoff 22.71 681.31 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.71 21.24 Blowdown 1.91 57.39 ID Pumping 9.24 277.20 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 69.71 2091.16 W. Seepage 0.00 0.00 E. Seepage -0.15 -4.51 N. Seepage -0.02 -0.66 S. Seepage 0.00 0.00 Bottom Seepage -26.60 -798.04 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -38.01 -1140.28 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -64.78 -1943.49 Modeled Change in CCS Storage: 4.92 147.67 Observed Change 12.76 382.66 5-46

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

May 2013 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.88 27.34 E. Seepage 12.95 401.59 N. Seepage 0.00 0.00 S. Seepage 2.52 78.11 Bottom Seepage 2.83 87.61 Into CCS Precipitation and Runoff 48.92 1516.41 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.93 28.68 Blowdown 2.15 66.71 ID Pumping 6.15 190.71 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 77.33 2397.16 W. Seepage 0.00 0.00 E. Seepage -1.71 -53.14 N. Seepage -0.01 -0.41 S. Seepage -0.03 -0.93 Bottom Seepage -17.48 -541.96 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -42.96 -1331.72 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -62.20 -1928.16 Modeled Change in CCS Storage: 15.13 469.00 Observed Change 22.68 703.18 5-47

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

June 2013 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.93 27.98 E. Seepage 6.33 189.89 N. Seepage 0.00 0.00 S. Seepage 1.42 42.74 Bottom Seepage 1.58 47.48 Into CCS Precipitation and Runoff 18.28 548.29 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.56 16.94 Blowdown 1.99 59.59 ID Pumping 0.68 20.52 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 31.78 953.44 W. Seepage 0.00 0.00 E. Seepage -14.22 -426.63 N. Seepage -0.02 -0.66 S. Seepage -0.85 -25.47 Bottom Seepage -21.98 -659.37 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -51.32 -1539.52 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -88.39 -2651.64 Modeled Change in CCS Storage: -56.61 -1698.20 Observed Change -31.07 -931.98 5-48

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

July 2013 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.80 24.80 E. Seepage 13.88 430.23 N. Seepage 0.00 0.02 S. Seepage 2.75 85.21 Bottom Seepage 5.10 158.03 Into CCS Precipitation and Runoff 47.74 1479.85 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.55 16.95 Blowdown 2.05 63.45 ID Pumping 0.70 21.78 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 73.56 2280.32 W. Seepage 0.00 0.00 E. Seepage -2.71 -83.88 N. Seepage -0.01 -0.33 S. Seepage 0.00 0.00 Bottom Seepage -9.67 -299.78 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -51.21 -1587.62 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -63.60 -1971.62 Modeled Change in CCS Storage: 9.96 308.70 Observed Change 19.61 607.86 5-49

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

August 2013 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.68 21.23 E. Seepage 19.87 615.97 N. Seepage 0.01 0.16 S. Seepage 3.37 104.42 Bottom Seepage 6.45 200.05 Into CCS Precipitation and Runoff 32.21 998.49 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.70 21.73 Blowdown 2.57 79.64 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 65.86 2041.70 W. Seepage 0.00 0.00 E. Seepage -2.72 -84.23 N. Seepage -0.01 -0.29 S. Seepage -0.03 -1.05 Bottom Seepage -6.99 -216.74 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -72.85 -2258.31 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -82.60 -2560.62 Modeled Change in CCS Storage: -16.74 -518.92 Observed Change -6.11 -189.45 5-50

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

September 2013 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.23 6.93 E. Seepage 14.72 441.57 N. Seepage 0.01 0.43 S. Seepage 2.50 74.93 Bottom Seepage 11.17 335.20 Into CCS Precipitation and Runoff 20.70 620.94 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.36 10.89 Blowdown 1.45 43.60 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 51.15 1534.50 W. Seepage 0.00 0.00 E. Seepage -0.25 -7.45 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -0.44 -13.34 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -34.36 -1030.80 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -35.05 -1051.58 Modeled Change in CCS Storage: 16.10 482.91 Observed Change 10.23 307.04 5-51

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

October 2013 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.28 8.69 E. Seepage 18.85 584.33 N. Seepage 0.03 1.02 S. Seepage 3.97 122.97 Bottom Seepage 24.88 771.30 Into CCS Precipitation and Runoff 7.33 227.12 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.55 16.96 Blowdown 2.25 69.88 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 58.14 1802.26 W. Seepage 0.00 0.00 E. Seepage -0.63 -19.39 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -0.17 -5.12 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -53.09 -1645.78 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -53.88 -1670.29 Modeled Change in CCS Storage: 4.26 131.97 Observed Change -5.40 -167.52 5-52

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

November 2013 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.26 7.75 E. Seepage 15.80 473.94 N. Seepage 0.03 0.82 S. Seepage 3.45 103.65 Bottom Seepage 19.90 597.10 Into CCS Precipitation and Runoff 32.18 965.32 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.49 14.56 Blowdown 1.79 53.85 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 73.90 2216.99 W. Seepage 0.00 -0.03 E. Seepage -0.87 -26.12 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -0.96 -28.75 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -43.14 -1294.07 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -44.97 -1348.97 Modeled Change in CCS Storage: 28.93 868.01 Observed Change 13.98 419.29 5-53

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

December 2013 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.33 10.11 E. Seepage 5.00 155.06 N. Seepage 0.01 0.21 S. Seepage 2.10 65.18 Bottom Seepage 3.84 118.90 Into CCS Precipitation and Runoff 4.42 137.06 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.50 15.50 Blowdown 1.79 55.54 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 17.99 557.56 W. Seepage 0.00 0.00 E. Seepage -3.65 -113.07 N. Seepage 0.00 -0.03 S. Seepage 0.00 0.00 Bottom Seepage -4.99 -154.79 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -40.83 -1265.84 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -49.48 -1533.74 Modeled Change in CCS Storage: -31.49 -976.18 Observed Change -21.47 -665.45 5-54

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

January 2014 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.57 17.81 E. Seepage 10.12 313.58 N. Seepage 0.02 0.48 S. Seepage 3.20 99.10 Bottom Seepage 7.97 247.10 Into CCS Precipitation and Runoff 8.44 261.68 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.47 14.68 Blowdown 1.67 51.80 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 32.46 1006.24 W. Seepage 0.00 0.00 E. Seepage -1.25 -38.73 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -1.80 -55.73 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -31.70 -982.74 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -34.75 -1077.21 Modeled Change in CCS Storage: -2.29 -70.98 Observed Change -6.40 -198.28 5-55

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

January 2014 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.57 17.81 E. Seepage 10.12 313.58 N. Seepage 0.02 0.48 S. Seepage 3.20 99.10 Bottom Seepage 7.97 247.10 Into CCS Precipitation and Runoff 8.44 261.68 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.47 14.68 Blowdown 1.67 51.80 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 32.46 1006.24 W. Seepage 0.00 0.00 E. Seepage -1.25 -38.73 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -1.80 -55.73 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -31.70 -982.74 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -34.75 -1077.21 Modeled Change in CCS Storage: -2.29 -70.98 Observed Change -6.40 -198.28 5-56

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

February 2014 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.69 19.25 E. Seepage 13.84 387.43 N. Seepage 0.02 0.57 S. Seepage 4.71 131.95 Bottom Seepage 11.54 323.12 Into CCS Precipitation and Runoff 10.25 287.10 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.48 13.58 Blowdown 1.63 45.52 ID Pumping 1.35 37.89 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 44.51 1246.42 W. Seepage 0.00 0.00 E. Seepage -0.37 -10.25 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -0.75 -21.08 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -43.10 -1206.67 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -44.21 -1238.00 Modeled Change in CCS Storage: 0.30 8.42 Observed Change -7.95 -222.68 5-57

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

March 2014 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.68 21.15 E. Seepage 14.42 447.03 N. Seepage 0.02 0.71 S. Seepage 4.31 133.62 Bottom Seepage 11.74 363.92 Into CCS Precipitation and Runoff 6.77 209.72 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.39 12.07 Blowdown 2.02 62.50 ID Pumping 1.93 59.76 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 42.27 1310.49 W. Seepage 0.00 0.00 E. Seepage -0.01 -0.33 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -1.01 -31.30 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -41.51 -1286.80 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -42.53 -1318.44 Modeled Change in CCS Storage: -0.26 -7.96 Observed Change -7.86 -243.70 5-58

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

April 2014 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.66 19.67 E. Seepage 25.03 750.93 N. Seepage 0.02 0.67 S. Seepage 5.29 158.60 Bottom Seepage 17.23 516.79 Into CCS Precipitation and Runoff 2.36 70.84 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.33 10.01 Blowdown 2.42 72.71 ID Pumping 3.19 95.76 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 56.53 1695.97 W. Seepage 0.00 0.00 E. Seepage 0.00 0.00 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -3.73 -111.95 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -42.72 -1281.73 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -46.46 -1393.68 Modeled Change in CCS Storage: 10.08 302.29 Observed Change 1.08 32.37 5-59

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

May 2014 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.68 20.99 E. Seepage 33.43 1036.20 N. Seepage 0.00 0.14 S. Seepage 4.99 154.57 Bottom Seepage 21.15 655.73 Precipitation and Runoff 6.93 214.70 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.46 14.40 Blowdown 2.21 68.43 ID Pumping 7.00 217.08 Added Water (e.g. L-31E) 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 76.85 2382.24 W. Seepage 0.00 0.00 E. Seepage 0.00 0.00 N. Seepage 0.00 -0.13 S. Seepage 0.00 0.00 Bottom Seepage -9.78 -303.28 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -56.21 -1742.62 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -66.00 -2046.03 Modeled Change in CCS Storage: 10.85 336.20 Observed Change 0.67 20.77 5-60

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

June 2014 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.80 24.00 E. Seepage 20.49 614.66 N. Seepage 0.00 0.05 S. Seepage 4.21 126.29 Bottom Seepage 10.99 329.66 Precipitation and Runoff 26.04 781.25 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.62 18.70 Blowdown 2.53 76.02 ID Pumping 2.77 83.16 Added Water (e.g. L-31E) 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 68.46 2053.78 W. Seepage 0.00 0.00 E. Seepage 0.00 0.00 N. Seepage 0.00 -0.12 S. Seepage 0.00 0.00 Bottom Seepage -2.07 -62.12 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -54.47 -1634.13 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -56.55 -1696.36 Modeled Change in CCS Storage: 11.91 357.42 Observed Change 7.55 226.42 5-61

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

July 2014 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 1.01 31.16 E. Seepage 11.05 342.53 N. Seepage 0.00 0.01 S. Seepage 4.44 137.63 Bottom Seepage 6.53 202.50 Precipitation and Runoff 31.02 961.54 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.62 19.32 Blowdown 2.78 86.09 ID Pumping 0.00 0.00 Added Water (e.g. L-31E) 3.97 122.96 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 61.41 1903.75 W. Seepage 0.00 0.00 E. Seepage -0.40 -12.41 N. Seepage -0.01 -0.32 S. Seepage 0.00 0.00 Bottom Seepage -2.34 -72.66 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -54.12 -1677.77 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -56.88 -1763.17 Modeled Change in CCS Storage: 4.53 140.58 Observed Change 12.49 387.09 5-62

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

August 2014 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.71 21.95 E. Seepage 23.67 733.89 N. Seepage 0.00 0.15 S. Seepage 4.97 154.14 Bottom Seepage 12.62 391.37 Precipitation and Runoff 15.64 484.97 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.61 18.99 Blowdown 2.85 88.45 ID Pumping 0.00 0.00 Added Water (e.g. L-31E) 4.09 126.76 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 65.18 2020.68 W. Seepage 0.00 0.00 E. Seepage 0.00 0.00 N. Seepage 0.00 -0.11 S. Seepage 0.00 0.00 Bottom Seepage -0.08 -2.62 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -58.35 -1808.79 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -58.44 -1811.52 Modeled Change in CCS Storage: 6.75 209.16 Observed Change 4.13 128.17 5-63

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

September 2014 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.32 9.58 E. Seepage 13.56 406.91 N. Seepage 0.01 0.30 S. Seepage 4.53 135.80 Bottom Seepage 12.04 361.16 Precipitation and Runoff 19.02 570.46 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.53 15.82 Blowdown 2.66 79.83 ID Pumping 0.00 0.00 Added Water (e.g. L-31E) 9.45 283.54 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 62.11 1863.40 W. Seepage 0.00 0.00 E. Seepage -0.45 -13.42 N. Seepage 0.00 -0.03 S. Seepage 0.00 0.00 Bottom Seepage -0.28 -8.49 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -48.30 -1448.86 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -49.03 -1470.80 Modeled Change in CCS Storage: 13.09 392.60 Observed Change 13.46 403.84 5-64

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

October 2014 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.40 12.29 E. Seepage 0.42 13.13 N. Seepage 0.01 0.24 S. Seepage 1.54 47.83 Bottom Seepage 4.00 124.06 Precipitation and Runoff 32.55 1009.10 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.46 14.16 Blowdown 2.40 74.39 ID Pumping 13.66 423.54 Added Water (e.g. L-31E) 25.28 783.62 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 80.72 2502.37 W. Seepage -0.04 -1.27 E. Seepage -16.02 -496.54 N. Seepage -0.01 -0.29 S. Seepage -0.14 -4.36 Bottom Seepage -16.88 -523.17 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -38.09 -1180.80 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -71.17 -2206.42 Modeled Change in CCS Storage: 9.55 295.95 Observed Change 24.22 750.70 5-65

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

November 2014 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.71 21.39 E. Seepage 4.63 138.85 N. Seepage 0.01 0.15 S. Seepage 2.19 65.78 Bottom Seepage 1.95 58.61 Precipitation and Runoff 2.44 73.23 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.55 16.60 Blowdown 1.89 56.81 ID Pumping 9.89 296.55 Added Water (e.g. L-31E) 5.22 156.58 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 29.49 884.56 W. Seepage 0.00 0.00 E. Seepage -5.95 -178.35 N. Seepage 0.00 -0.09 S. Seepage -0.04 -1.26 Bottom Seepage -11.24 -337.13 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -36.40 -1091.88 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -53.62 -1608.71 Modeled Change in CCS Storage: -24.14 -724.16 Observed Change -25.31 -759.36 5-66

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

December 2014 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.39 12.19 E. Seepage 7.13 220.99 N. Seepage 0.01 0.44 S. Seepage 3.66 113.41 Bottom Seepage 6.27 194.27 Precipitation and Runoff 12.37 383.60 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.48 14.84 Blowdown 1.93 59.85 ID Pumping 0.66 20.43 Added Water (e.g. L-31E) 3.26 100.98 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 36.16 1120.99 W. Seepage 0.00 0.00 E. Seepage -2.57 -79.74 N. Seepage 0.00 -0.01 S. Seepage 0.00 0.00 Bottom Seepage -2.91 -90.34 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -32.64 -1011.85 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -38.13 -1181.93 Modeled Change in CCS Storage: -1.97 -60.95 Observed Change -9.52 -295.24 5-67

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

January 2015 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.40 12.08 E. Seepage 8.10 243.11 N. Seepage 0.01 0.34 S. Seepage 3.72 111.70 Bottom Seepage 7.62 228.57 Precipitation and Runoff 11.00 329.92 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.55 16.56 Blowdown 2.15 64.51 ID Pumping 0.00 0.00 Added Water (e.g. L-31E) 11.26 337.90 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 44.82 1344.69 W. Seepage 0.00 0.00 E. Seepage -1.43 -42.89 N. Seepage 0.00 -0.01 S. Seepage 0.00 0.00 Bottom Seepage -1.58 -47.32 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -38.11 -1143.28 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -41.12 -1233.50 Modeled Change in CCS Storage: 3.71 111.20 Observed Change -9.62 -298.36 5-68

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

February 2015 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.62 19.25 E. Seepage 12.33 382.08 N. Seepage 0.01 0.38 3.70 114.85 S. Seepage Bottom Seepage 4.12 127.67 Precipitation and Runoff 5.68 176.18 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.51 15.68 Blowdown 1.89 58.71 ID Pumping 5.20 161.19 Added Water (e.g. L-31E) 13.46 417.31 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 47.53 1473.30 W. Seepage 0.00 0.00 E. Seepage -1.34 -41.44 N. Seepage 0.00 -0.01 S. Seepage 0.00 0.00 Bottom Seepage -9.72 -301.46 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -34.02 -1054.70 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -45.08 -1397.61 Modeled Change in CCS Storage: 2.44 75.69 Observed Change 2.44 68.30 5-69

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

March 2015 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.73 21.88 E. Seepage 8.63 258.83 N. Seepage 0.00 0.09 S. Seepage 2.81 84.35 Bottom Seepage 0.51 15.27 Precipitation and Runoff 10.46 313.88 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.61 18.27 Blowdown 2.36 70.75 ID Pumping 9.45 283.44 Added Water (e.g. L-31E) 15.40 462.02 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 50.96 1528.79 W. Seepage 0.00 0.00 E. Seepage -2.13 -63.78 N. Seepage -0.01 -0.19 S. Seepage 0.00 0.00 Bottom Seepage -28.51 -855.32 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -47.34 -1420.23 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -77.98 -2339.52 Modeled Change in CCS Storage: -27.02 -810.74 Observed Change -12.11 -375.50 5-70

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

April 2015 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.89 27.54 E. Seepage 26.72 828.47 N. Seepage 0.00 0.00 S. Seepage 2.88 89.24 Bottom Seepage 10.17 315.32 Precipitation and Runoff 34.63 1073.50 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.53 16.42 Blowdown 2.39 74.24 ID Pumping 12.06 374.01 Added Water (e.g. L-31E) 13.99 433.76 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 104.27 3232.50 W. Seepage 0.00 0.00 E. Seepage -0.06 -1.84 N. Seepage -0.01 -0.46 S. Seepage 0.00 0.00 Bottom Seepage -29.22 -905.96 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -49.98 -1549.30 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -79.28 -2457.57 Modeled Change in CCS Storage: 25.00 774.93 Observed Change 22.43 672.93 5-71

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-4. Calculated Fluid Flows from Water Budget Components.

May 2015 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.81 24.34 E. Seepage 14.49 434.74 N. Seepage 0.00 0.15 S. Seepage 3.91 117.29 Bottom Seepage 5.15 154.41 Precipitation and Runoff 4.47 134.06 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.56 16.87 Blowdown 2.98 89.47 ID Pumping 1.14 34.20 Added Water (e.g. L-31E) 4.25 127.38 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 37.76 1132.93 W. Seepage 0.00 0.00 E. Seepage -0.08 -2.26 N. Seepage 0.00 -0.06 S. Seepage 0.00 0.00 Bottom Seepage -10.40 -311.85 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -46.15 -1384.62 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -56.63 -1698.79 Modeled Change in CCS Storage: -18.86 -565.87 Observed Change -23.99 -743.60 5-72

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

September 2010 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 1.32 39.74 E. Seepage 2367.81 71034.23 N. Seepage 3.26 97.90 S. Seepage 141.52 4245.59 Bottom Seepage 1757.29 52718.75 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 142.95 4288.51 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 4414.16 132424.73 W. Seepage 0.00 0.00 E. Seepage -2107.47 -63224.09 N. Seepage -1.00 -30.03 S. Seepage 0.00 0.00 Bottom Seepage -3148.36 -94450.90 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -5256.83 -157705.02 Modeled Change in CCS Storage: -842.68 -157705.02 Observed Change 1464.29 43928.58 Key:

CCS = Cooling Canal System.

ID = Interceptor Ditch.

lb = Pound.

5-73

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

October 2010 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 0.42 13.07 E. Seepage 145.46 4509.21 N. Seepage 1.03 32.01 S. Seepage 9.79 303.49 Bottom Seepage 1578.86 48944.78 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 108.85 3374.49 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 1844.42 57177.05 W. Seepage -90.08 -2792.56 E. Seepage -8248.71 -255710.08 N. Seepage -2.35 -72.84 S. Seepage -19.82 -614.51 Bottom Seepage -7351.71 -227902.88 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -15712.67 -487092.89 Modeled Change in CCS Storage: -13868.25 -429915.84 Observed Change -13790.42 -427502.87 5-74

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

November 2010 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 0.62 18.65 E. Seepage 1112.86 33385.66 N. Seepage 1.02 30.47 S. Seepage 86.35 2590.47 Bottom Seepage 448.66 13459.68 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 72.95 2188.41 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 1722.44 51673.35 W. Seepage -561.32 -16839.75 E. Seepage -2562.68 -76880.51 N. Seepage -1.36 -40.70 S. Seepage -11.76 -352.92 Bottom Seepage -4970.49 -149114.70 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -8107.62 -243228.57 Modeled Change in CCS Storage: -6385.17 -191555.23 Observed Change -2876.16 -86284.89 5-75

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

December 2010 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 2.64 81.97 E. Seepage 4285.67 132855.83 N. Seepage 0.00 0.00 S. Seepage 408.74 12670.94 Bottom Seepage 453.49 14058.10 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 105.19 3260.84 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 5255.73 162927.68 W. Seepage 0.00 0.00 E. Seepage -162.55 -5039.00 N. Seepage -4.76 -147.53 S. Seepage -2.38 -73.76 Bottom Seepage -5813.63 -180222.52 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -5983.32 -185482.82 Modeled Change in CCS Storage: -727.59 -22555.14 Observed Change -1555.92 -48233.42 5-76

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

January 2011 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 5.82 180.56 E. Seepage 2552.32 79121.95 N. Seepage 0.02 0.72 S. Seepage 351.22 10887.84 Bottom Seepage 583.72 18095.32 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 119.67 3709.91 ID Pumped Water 185.05 5736.69 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 3797.84 117732.99 W. Seepage 0.00 0.00 E. Seepage -1442.13 -44705.99 N. Seepage -5.83 -180.58 S. Seepage 0.00 0.00 Bottom Seepage -7389.58 -229076.98 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -8837.53 -273963.56 Modeled Change in CCS Storage: -5039.70 -156230.57 Observed Change -910.35 -28220.95 5-77

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

February 2011 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 3.72 104.03 E. Seepage 6193.40 173415.07 N. Seepage 0.00 0.00 S. Seepage 633.20 17729.66 Bottom Seepage 2001.44 56040.28 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 101.50 2842.14 ID Pumped Water 73.70 2063.56 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 9006.95 252194.73 W. Seepage 0.00 0.00 E. Seepage -152.30 -4264.37 N. Seepage -9.05 -253.36 S. Seepage 0.00 0.00 Bottom Seepage -9382.55 -262711.31 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -9543.89 -267229.04 Modeled Change in CCS Storage: -536.94 -15034.31 Observed Change 1264.60 35408.76 5-78

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

March 2011 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 6.30 195.21 E. Seepage 5635.93 174713.82 N. Seepage 0.54 16.89 S. Seepage 843.27 26141.22 Bottom Seepage 2189.25 67866.90 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 96.82 3001.46 ID Pumped Water 774.24 24001.46 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 9546.35 295936.97 W. Seepage 0.00 0.00 E. Seepage -133.36 -4134.31 N. Seepage -2.15 -66.72 S. Seepage 0.00 0.00 Bottom Seepage -8496.44 -263389.76 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -8631.96 -267590.80 Modeled Change in CCS Storage: 914.39 28346.17 Observed Change 2504.94 77653.08 5-79

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

April 2011 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 6.92 207.58 E. Seepage 8457.74 253732.07 N. Seepage 0.69 20.75 S. Seepage 1325.65 39769.41 Bottom Seepage 3391.45 101743.46 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 165.25 4957.53 ID Pumped Water 751.05 22531.49 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 14098.74 422962.29 W. Seepage 0.00 0.00 E. Seepage 0.00 0.00 N. Seepage -1.16 -34.89 S. Seepage 0.00 0.00 Bottom Seepage -8372.65 -251179.64 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -8373.82 -251214.54 Modeled Change in CCS Storage: 5724.93 171747.75 Observed Change -4057.29 -121718.78 5-80

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

May 2011 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 22.76 705.69 E. Seepage 14314.76 443757.52 N. Seepage 0.00 0.00 S. Seepage 1950.48 60464.95 Bottom Seepage 5815.91 180293.08 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 169.25 5246.87 ID Pumped Water 3405.55 105571.94 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 25678.71 796040.04 W. Seepage 0.00 0.00 E. Seepage 0.00 0.00 N. Seepage -18.40 -570.36 S. Seepage 0.00 0.00 Bottom Seepage -25285.18 -783840.65 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -25303.58 -784411.01 Modeled Change in CCS Storage: 375.13 11629.03 Observed Change 6228.37 193079.32 5-81

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

June 2011 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 34.43 1032.86 E. Seepage 12237.99 367139.73 N. Seepage 0.00 0.00 S. Seepage 2011.79 60353.71 Bottom Seepage 6058.29 181748.84 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 148.97 4469.00 ID Pumped Water 4597.36 137920.85 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 25088.83 752665.00 W. Seepage 0.00 0.00 E. Seepage -4.13 -123.93 N. Seepage -16.95 -508.47 S. Seepage 0.00 0.00 Bottom Seepage -21821.28 -654638.29 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -21842.36 -655270.68 Modeled Change in CCS Storage: 3246.48 97394.32 Observed Change 8658.55 259756.64 5-82

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

July 2011 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 19.96 618.77 E. Seepage 1467.54 45493.62 N. Seepage 0.00 0.00 S. Seepage 542.84 16828.19 Bottom Seepage 1464.15 45388.73 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 164.90 5111.87 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 3659.39 113441.18 W. Seepage 0.00 0.00 E. Seepage -5149.44 -159632.70 N. Seepage -6.85 -212.23 S. Seepage -59.11 -1832.49 Bottom Seepage -8619.80 -267213.76 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -13835.20 -428891.19 Modeled Change in CCS Storage: -10175.81 -315450.01 Observed Change 3237.34 100357.40 5-83

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

August 2011 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 6.44 199.73 E. Seepage 4818.73 149380.50 N. Seepage 0.98 30.43 S. Seepage 500.29 15508.86 Bottom Seepage 2143.75 66456.30 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 151.94 4710.17 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 7622.13 236285.99 W. Seepage -57.15 -1771.69 E. Seepage -57.86 -1793.76 N. Seepage -0.60 -18.59 S. Seepage 0.00 0.00 Bottom Seepage -1809.39 -56091.02 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -1925.00 -59675.06 Modeled Change in CCS Storage: 5697.13 176610.93 Observed Change 4028.64 124887.94 5-84

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

September 2011 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 2.46 73.74 E. Seepage 2518.16 75544.84 N. Seepage 0.12 3.49 S. Seepage 365.74 10972.20 Bottom Seepage 867.21 26016.23 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 142.95 4288.51 ID Pumped Water 406.90 12207.06 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 4303.54 129106.06 W. Seepage -681.83 -20454.85 E. Seepage -725.18 -21755.44 N. Seepage -3.46 -103.68 S. Seepage 0.00 0.00 Bottom Seepage -4157.26 -124717.89 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -5567.73 -167031.86 Modeled Change in CCS Storage: -1264.19 -37925.80 Observed Change -3663.57 -109906.97 5-85

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

October 2011 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 1.29 39.99 E. Seepage 2800.88 86827.20 N. Seepage 0.39 12.19 S. Seepage 219.37 6800.38 Bottom Seepage 4150.65 128670.25 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 108.85 3374.49 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 7281.44 225724.50 W. Seepage 0.00 0.00 E. Seepage -990.71 -30712.12 N. Seepage -3.96 -122.70 S. Seepage 0.00 0.00 Bottom Seepage -38.92 -1206.45 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -1033.59 -32041.28 Modeled Change in CCS Storage: 6247.85 193683.22 Observed Change -3871.33 -120011.08 5-86

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

November 2011 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 1.32 39.50 E. Seepage 2309.02 69270.64 N. Seepage 1.24 37.31 S. Seepage 415.72 12471.49 Bottom Seepage 1942.59 58277.79 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 72.95 2188.41 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 4742.84 142285.15 W. Seepage -2.60 -77.88 E. Seepage -395.12 -11853.47 N. Seepage -1.38 -41.50 S. Seepage 0.00 0.00 Bottom Seepage -1464.94 -43948.27 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -1864.04 -55921.12 Modeled Change in CCS Storage: 2878.80 86364.02 Observed Change -3673.05 -110191.36 5-87

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

December 2011 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 2.55 79.07 E. Seepage 3595.66 111465.45 N. Seepage 1.01 31.46 S. Seepage 701.00 21730.94 Bottom Seepage 1765.94 54744.18 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 105.19 3260.84 ID Pumped Water 431.13 13365.08 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 6602.48 204677.00 W. Seepage 0.00 0.00 E. Seepage -99.37 -3080.36 N. Seepage -2.01 -62.16 S. Seepage 0.00 0.00 Bottom Seepage -6333.22 -196329.83 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -6434.59 -199472.35 Modeled Change in CCS Storage: 167.89 5204.65 Observed Change -3828.22 -118674.85 5-88

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

January 2012 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 5.92 183.39 E. Seepage 5523.45 171226.89 N. Seepage 0.16 4.83 S. Seepage 824.99 25574.55 Bottom Seepage 2720.16 84324.88 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 129.55 4016.08 ID Pumped Water 2219.37 68800.40 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 11423.58 354131.01 W. Seepage 0.00 0.00 E. Seepage -14.38 -445.70 N. Seepage -8.30 -257.31 S. Seepage 0.00 0.00 Bottom Seepage -13952.78 -432536.10 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -13975.46 -433239.11 Modeled Change in CCS Storage: -2551.87 -79108.10 Observed Change -2625.35 -81385.79 5-89

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

February 2012 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 4.80 139.07 E. Seepage 2717.89 78818.90 N. Seepage 1.78 51.48 S. Seepage 627.76 18204.99 Bottom Seepage 3039.98 88159.42 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 114.21 3312.10 ID Pumped Water 189.46 5494.29 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 6695.87 194180.25 W. Seepage 0.00 0.00 E. Seepage -713.59 -20694.17 N. Seepage -0.50 -14.61 S. Seepage 0.00 0.00 Bottom Seepage -4974.71 -144266.56 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -5688.80 -164975.34 Modeled Change in CCS Storage: 1007.07 29204.91 Observed Change 3362.46 97511.42 5-90

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

March 2012 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 3.50 108.45 E. Seepage 4722.94 146411.22 N. Seepage 4.94 153.03 S. Seepage 899.57 27886.53 Bottom Seepage 3412.96 105801.72 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 143.97 4463.00 ID Pumped Water 187.62 5816.11 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 9375.49 290640.06 W. Seepage 0.00 0.00 E. Seepage -243.93 -7561.81 N. Seepage -0.21 -6.62 S. Seepage 0.00 0.00 Bottom Seepage -3587.83 -111222.82 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -3831.98 -118791.24 Modeled Change in CCS Storage: 5543.51 171848.81 Observed Change -500.48 -15514.87 5-91

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

April 2012 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 12.67 380.17 E. Seepage 5083.99 152519.68 N. Seepage 1.97 59.07 S. Seepage 1027.09 30812.75 Bottom Seepage 3222.55 96676.59 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 143.15 4294.46 ID Pumped Water 1035.51 31065.19 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 10526.93 315807.89 W. Seepage 0.00 0.00 E. Seepage -121.57 -3647.20 N. Seepage -0.98 -29.32 S. Seepage 0.00 0.00 Bottom Seepage -7106.70 -213201.07 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -7229.25 -216877.58 Modeled Change in CCS Storage: 3297.68 98930.31 Observed Change 4132.59 123977.58 5-92

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

May 2012 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 7.32 226.98 E. Seepage 150.38 4661.72 N. Seepage 5.55 172.14 S. Seepage 162.56 5039.38 Bottom Seepage 2945.99 91325.68 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 141.53 4387.54 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 3413.34 105813.44 W. Seepage 0.00 0.00 E. Seepage -5714.04 -177135.24 N. Seepage -0.30 -9.32 S. Seepage -0.83 -25.76 Bottom Seepage -3916.75 -121419.13 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -9631.92 -298589.45 Modeled Change in CCS Storage: -6218.58 -192776.01 Observed Change -4664.11 -144587.53 5-93

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

June 2012 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 1.77 53.22 E. Seepage 743.75 22312.43 N. Seepage 3.89 116.62 S. Seepage 314.62 9438.70 Bottom Seepage 2478.26 74347.84 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 150.80 4524.00 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 3693.09 110792.82 W. Seepage -32.19 -965.63 E. Seepage -3706.73 -111201.98 N. Seepage -0.27 -7.97 S. Seepage 0.00 0.00 Bottom Seepage -2818.78 -84563.47 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -6557.97 -196739.05 Modeled Change in CCS Storage: -2864.87 -85946.23 Observed Change -2740.38 -82211.41 5-94

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

July 2012 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 2.29 71.09 E. Seepage 4.53 140.39 N. Seepage 5.42 167.89 S. Seepage 90.89 2817.55 Bottom Seepage 3358.12 104101.82 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 155.80 4829.81 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 3617.05 112128.55 W. Seepage 0.00 0.00 E. Seepage -4476.42 -138769.10 N. Seepage 0.00 0.00 S. Seepage -25.83 -800.83 Bottom Seepage -3810.46 -118124.27 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -8312.72 -257694.20 Modeled Change in CCS Storage: -4695.67 -145565.65 Observed Change -2497.19 -77412.85 5-95

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

August 2012 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 2.22 68.82 E. Seepage 1315.71 40787.10 N. Seepage 4.79 148.53 S. Seepage 164.61 5102.99 Bottom Seepage 2923.81 90638.04 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 160.70 4981.80 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 4571.85 141727.27 W. Seepage 0.00 0.00 E. Seepage -2322.51 -71997.77 N. Seepage 0.00 0.00 S. Seepage -11.91 -369.31 Bottom Seepage -2437.96 -75576.61 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -4772.38 -147943.69 Modeled Change in CCS Storage: -200.53 -6216.42 Observed Change 1642.83 50927.78 5-96

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

September 2012 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 1.28 38.29 E. Seepage 561.40 16841.87 N. Seepage 2.87 85.98 S. Seepage 36.55 1096.39 Bottom Seepage 1640.38 49211.44 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 140.84 4225.23 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 2383.31 71499.20 W. Seepage -67.28 -2018.37 E. Seepage -3779.14 -113374.23 N. Seepage -0.02 -0.64 S. Seepage -13.36 -400.94 Bottom Seepage -4064.05 -121921.62 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -7923.86 -237715.80 Modeled Change in CCS Storage: -5540.55 -166216.60 Observed Change -2600.46 -78013.94 5-97

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

October 2012 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 0.75 23.18 E. Seepage 3404.60 105542.53 N. Seepage 3.25 100.85 S. Seepage 612.24 18979.43 Bottom Seepage 3429.20 106305.29 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 137.73 4269.50 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 7587.77 235220.78 W. Seepage -163.09 -5055.73 E. Seepage -1660.10 -51462.95 N. Seepage -1.16 -35.89 S. Seepage -6.52 -202.27 Bottom Seepage -1982.01 -61442.38 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -3812.88 -118199.24 Modeled Change in CCS Storage: 3774.89 117021.55 Observed Change 6379.02 197749.67 5-98

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

November 2012 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 2.70 80.98 E. Seepage 1784.00 53520.07 N. Seepage 4.16 124.84 S. Seepage 684.72 20541.49 Bottom Seepage 3275.44 98263.10 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 95.89 2876.57 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 5846.90 175407.05 W. Seepage 0.00 0.00 E. Seepage -980.36 -29410.67 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -958.69 -28760.77 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -1939.05 -58171.43 Modeled Change in CCS Storage: 3907.85 117235.62 Observed Change 2368.82 71064.75 5-99

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

December 2012 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 6.22 192.82 E. Seepage 108.87 3375.04 N. Seepage 4.21 130.51 S. Seepage 276.39 8568.06 Bottom Seepage 1940.48 60154.80 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 109.16 3383.97 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 2445.33 75805.20 W. Seepage 0.00 0.00 E. Seepage -3354.85 -104000.43 N. Seepage 0.00 0.00 S. Seepage -0.23 -7.11 Bottom Seepage -2072.95 -64261.37 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -5428.03 -168268.92 Modeled Change in CCS Storage: -2982.70 -92463.72 Observed Change -7753.08 -240345.33 5-100

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

January 2013 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 6.20 192.05 E. Seepage 1924.13 59647.96 N. Seepage 4.36 135.08 S. Seepage 687.26 21305.13 Bottom Seepage 2256.99 69966.81 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 126.94 3935.07 ID Pumped Water 60.40 1872.54 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 5066.28 157054.65 W. Seepage 0.00 0.00 E. Seepage -1075.17 -33330.31 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -722.42 -22395.07 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -1797.59 -55725.38 Modeled Change in CCS Storage: 3268.69 101329.27 Observed Change 525.54 16291.69 5-101

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

February 2013 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 8.45 236.61 E. Seepage 2663.89 74589.03 N. Seepage 3.16 88.59 S. Seepage 894.66 25050.34 Bottom Seepage 2063.41 57775.55 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 119.06 3333.75 ID Pumped Water 324.14 9075.87 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 6076.78 170149.75 W. Seepage 0.00 0.00 E. Seepage -1306.60 -36584.73 N. Seepage -0.08 -2.20 S. Seepage 0.00 0.00 Bottom Seepage -3429.98 -96039.49 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -4736.66 -132626.43 Modeled Change in CCS Storage: 1340.12 37523.32 Observed Change 1710.98 47907.57 5-102

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

March 2013 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 9.49 294.09 E. Seepage 6181.90 191639.04 N. Seepage 1.42 44.00 S. Seepage 1225.74 37997.99 Bottom Seepage 2066.77 64069.78 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 140.55 4356.98 ID Pumped Water 347.21 10763.51 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 9973.08 309165.38 W. Seepage 0.00 0.00 E. Seepage 0.00 0.00 N. Seepage -2.06 -63.94 S. Seepage 0.00 0.00 Bottom Seepage -4851.44 -150394.72 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -4853.51 -150458.66 Modeled Change in CCS Storage: 5119.57 158706.72 Observed Change 4065.17 126020.42 5-103

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

April 2013 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 11.54 346.20 E. Seepage 6804.14 204124.17 N. Seepage 0.00 0.00 S. Seepage 838.93 25168.01 Bottom Seepage 2205.58 66167.30 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 139.68 4190.40 ID Pumped Water 478.94 14368.08 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 10478.81 314364.17 W. Seepage 0.00 0.00 E. Seepage -72.08 -2162.45 N. Seepage -10.84 -325.20 S. Seepage 0.00 0.00 Bottom Seepage -13020.92 -390627.55 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -13103.84 -393115.19 Modeled Change in CCS Storage: -2625.03 -78751.02 Observed Change 4774.59 143237.63 5-104

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

May 2013 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 5.61 174.03 E. Seepage 3676.69 113977.27 N. Seepage 0.00 0.00 S. Seepage 618.85 19184.31 Bottom Seepage 827.40 25649.44 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 157.13 4871.04 ID Pumped Water 287.40 8909.54 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 5573.08 172765.63 W. Seepage 0.00 0.00 E. Seepage -746.77 -23149.74 N. Seepage -6.57 -203.76 S. Seepage -12.70 -393.70 Bottom Seepage -8403.65 -260513.06 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -9169.69 -284260.25 Modeled Change in CCS Storage: -3596.60 -111494.63 Observed Change 1237.57 38364.62 5-105

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

June 2013 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 3.59 107.83 E. Seepage 1935.70 58071.12 N. Seepage 0.00 0.00 S. Seepage 260.17 7805.20 Bottom Seepage 466.22 13986.52 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 145.05 4351.64 ID Pumped Water 18.96 568.88 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 2829.71 84891.18 W. Seepage 0.00 0.00 E. Seepage -6156.68 -184700.28 N. Seepage -10.10 -303.10 S. Seepage -367.26 -11017.89 Bottom Seepage -9970.74 -299122.23 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -16504.78 -495143.50 Modeled Change in CCS Storage: -13675.08 -410252.31 Observed Change -4607.17 -138215.25 5-106

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

July 2013 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 2.60 80.51 E. Seepage 3940.49 122155.33 N. Seepage 0.00 0.00 S. Seepage 520.65 16140.17 Bottom Seepage 1521.54 47167.79 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 149.46 4633.21 ID Pumped Water 20.32 629.86 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 6155.06 190806.87 W. Seepage 0.00 0.00 E. Seepage -1223.74 -37935.92 N. Seepage -6.19 -191.85 S. Seepage 0.00 0.00 Bottom Seepage -4747.42 -147169.99 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -5977.35 -185297.76 Modeled Change in CCS Storage: 177.71 5509.11 Observed Change 4833.38 149834.84 5-107

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

August 2013 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 1.65 51.06 E. Seepage 3909.73 121201.56 N. Seepage 0.40 12.37 S. Seepage 436.28 13524.78 Bottom Seepage 1229.28 38107.54 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 136.24 4223.30 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 5713.57 177120.59 W. Seepage 0.00 0.00 E. Seepage -1196.82 -37101.49 N. Seepage -6.00 -186.11 S. Seepage -16.17 -501.24 Bottom Seepage -3601.96 -111660.71 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -4820.95 -149449.56 Modeled Change in CCS Storage: 892.61 27671.04 Observed Change 3101.52 96147.08 5-108

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

September 2013 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 1.25 37.54 E. Seepage 4990.46 149713.86 N. Seepage 3.92 117.62 S. Seepage 743.84 22315.07 Bottom Seepage 3869.36 116080.74 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 159.20 4775.91 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 10969.13 329073.89 W. Seepage 0.00 0.00 E. Seepage -134.55 -4036.48 N. Seepage -0.19 -5.75 S. Seepage 0.00 0.00 Bottom Seepage -263.07 -7892.07 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -397.81 -11934.30 Modeled Change in CCS Storage: 9370.21 281106.43 Observed Change 5122.20 153666.00 5-109

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

October 2013 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 0.96 29.76 E. Seepage 3904.36 121035.14 N. Seepage 7.80 241.71 S. Seepage 761.95 23620.31 Bottom Seepage 6513.91 201931.11 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 164.60 5102.72 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 11353.57 351960.75 W. Seepage 0.00 0.00 E. Seepage -316.00 -9795.90 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -86.56 -2683.26 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -402.55 -12479.17 Modeled Change in CCS Storage: 10951.02 339481.59 Observed Change 5172.10 160335.08 5-110

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

November 2013 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 1.34 40.07 E. Seepage 3405.86 102175.90 N. Seepage 6.40 192.02 S. Seepage 808.83 24265.00 Bottom Seepage 3906.18 117185.38 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 131.07 3932.08 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 8259.68 247790.45 W. Seepage -21.40 -641.98 E. Seepage -470.60 -14117.90 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -769.53 -23085.79 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -1261.52 -37845.66 Modeled Change in CCS Storage: 6998.16 209944.79 Observed Change 3117.41 93522.19 5-111

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

December 2013 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 1.50 46.37 E. Seepage 1005.24 31162.38 N. Seepage 1.41 43.82 S. Seepage 320.93 9948.86 Bottom Seepage 1003.58 31111.07 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 130.83 4055.70 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 2463.49 76368.21 W. Seepage 0.00 0.00 E. Seepage -1924.84 -59669.92 N. Seepage -0.72 -22.30 S. Seepage 0.00 0.00 Bottom Seepage -2688.32 -83337.81 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -4613.87 -143030.02 Modeled Change in CCS Storage: -2150.38 -143030.02 Observed Change -6529.12 -202402.80 5-112

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

January 2014 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 2.36 73.19 E. Seepage 2226.86 69032.53 N. Seepage 3.76 116.46 S. Seepage 462.15 14326.61 Bottom Seepage 2102.48 65176.86 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 122.02 3782.67 ID Pumped Water 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 4919.62 152508.32 W. Seepage 0.00 0.00 E. Seepage -660.45 -20473.93 N. Seepage -0.11 -3.52 S. Seepage 0.00 0.00 Bottom Seepage -953.71 -29565.14 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -1614.28 -50042.59 Modeled Change in CCS Storage: 3305.35 102465.73 Observed Change -445.87 -13822.03 5-113

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

February 2014 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 2.99 83.81 E. Seepage 3608.33 101033.25 N. Seepage 4.91 137.49 S. Seepage 412.57 11551.82 Bottom Seepage 3078.46 86196.88 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 118.73 3324.34 ID Pumped Water 31.99 895.74 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 7257.98 203223.33 W. Seepage 0.00 0.00 E. Seepage -195.05 -5461.33 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -419.64 -11749.95 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -614.69 -17211.28 Modeled Change in CCS Storage: 6643.29 186012.05 Observed Change 625.60 17516.93 5-114

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

March 2014 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 3.36 104.31 E. Seepage 4067.78 126101.17 N. Seepage 5.56 172.22 S. Seepage 381.87 11837.92 Bottom Seepage 3172.67 98352.74 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 147.23 4563.98 ID Pumped Water 58.78 1822.19 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 7837.24 242954.52 W. Seepage 0.00 0.00 E. Seepage -6.43 -199.21 N. Seepage -0.08 -2.45 S. Seepage 0.00 0.00 Bottom Seepage -686.46 -21280.39 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -692.97 -21482.06 Modeled Change in CCS Storage: 7144.27 221472.46 Observed Change 3657.01 113367.46 5-115

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

April 2014 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 5.61 168.39 E. Seepage 8221.78 246653.26 N. Seepage 5.79 173.62 S. Seepage 910.11 27303.36 Bottom Seepage 4988.04 149641.17 Into CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 176.97 5309.23 ID Pumped Water 100.96 3028.93 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 14409.26 432277.95 W. Seepage 0.00 0.00 E. Seepage 0.00 0.00 N. Seepage 0.00 0.00 S. Seepage 0.00 0.00 Bottom Seepage -2828.19 -84845.68 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -2828.19 -84845.68 Modeled Change in CCS Storage: 11581.08 347432.27 Observed Change 5846.87 175406.11 5-116

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

May 2014 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 19.51 604.92 E. Seepage 11455.78 355129.18 N. Seepage 0.97 30.19 S. Seepage 1663.96 51582.86 Bottom Seepage 6357.27 197075.45 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 161.19 4996.88 ID Pumped Water 376.82 11681.42 Added Water (e.g. L-31E) 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 20035.51 621100.89 W. Seepage 0.00 0.00 E. Seepage 0.00 0.00 N. Seepage -3.53 -109.40 S. Seepage 0.00 0.00 Bottom Seepage -7474.33 -231704.37 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -7477.86 -231813.77 Modeled Change in CCS Storage: 12557.65 -231813.77 Observed Change 1599.21 49575.59 5-117

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

June 2014 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 23.70 710.97 E. Seepage 6914.35 207430.40 N. Seepage 0.41 12.17 S. Seepage 1226.07 36781.98 Bottom Seepage 3144.95 94348.42 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 185.05 5551.44 ID Pumped Water 146.27 4388.23 Added Water (e.g. L-31E) 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 11640.79 349223.61 W. Seepage 0.00 0.00 E. Seepage 0.00 0.00 N. Seepage -3.08 -92.33 S. Seepage 0.00 0.00 Bottom Seepage -1625.15 -48754.54 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -1628.23 -48846.87 Modeled Change in CCS Storage: 10012.56 300376.73 Observed Change 8607.32 258219.46 5-118

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

July 2014 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 14.93 462.74 E. Seepage 3538.20 109684.24 N. Seepage 0.10 3.20 S. Seepage 715.30 22174.33 Bottom Seepage 1643.69 50954.52 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 202.80 6286.80 ID Pumped Water 0.00 0.00 Added Water (e.g. L-31E) 72.82 2257.51 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 6187.85 191823.34 W. Seepage 0.00 0.00 E. Seepage -293.89 -9110.44 N. Seepage -7.68 -237.97 S. Seepage 0.00 0.00 Bottom Seepage -1708.02 -52948.49 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -2009.58 -62296.90 Modeled Change in CCS Storage: 4178.27 129526.44 Observed Change 5113.71 158525.04 5-119

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

August 2014 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 5.46 169.33 E. Seepage 7697.88 238634.27 N. Seepage 0.36 11.21 S. Seepage 780.04 24181.32 Bottom Seepage 3275.25 101532.74 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 208.36 6459.04 ID Pumped Water 0.00 0.00 Added Water (e.g. L-31E) 75.08 2327.35 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 12042.43 373315.27 W. Seepage 0.00 0.00 E. Seepage 0.00 0.00 N. Seepage -3.14 -97.39 S. Seepage 0.00 0.00 Bottom Seepage -61.22 -1897.75 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -64.36 -1995.14 Modeled Change in CCS Storage: 11978.07 371320.13 Observed Change 7731.72 239683.45 5-120

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

September 2014 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 1.92 57.51 E. Seepage 4382.24 131467.29 N. Seepage 1.15 34.56 S. Seepage 1016.29 30488.73 Bottom Seepage 2953.06 88591.95 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 194.31 5829.15 ID Pumped Water 0.00 0.00 Added Water (e.g. L-31E) 86.86 2605.80 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 8635.83 259074.99 W. Seepage 0.00 0.00 E. Seepage -324.60 -9738.11 N. Seepage -0.95 -28.50 S. Seepage 0.00 0.00 Bottom Seepage -211.28 -6338.26 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -536.83 -16104.87 Modeled Change in CCS Storage: 8099.00 242970.11 Observed Change 1833.21 54996.24 5-121

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

October 2014 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 2.83 87.86 E. Seepage 103.09 3195.74 N. Seepage 0.50 15.42 S. Seepage 332.18 10297.71 Bottom Seepage 893.37 27694.54 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 175.24 5432.40 ID Pumped Water 592.23 18359.04 Added Water (e.g. L-31E) 90.13 2793.93 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 2189.57 67876.64 W. Seepage -948.41 -29400.67 E. Seepage -9654.91 -299302.19 N. Seepage -7.75 -240.29 S. Seepage -81.25 -2518.86 Bottom Seepage -9834.43 -304867.45 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -20526.76 -636329.47 Modeled Change in CCS Storage: -18337.19 -568452.83 Observed Change -12726.02 -394506.69 5-122

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

November 2014 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 4.38 135.93 E. Seepage 914.73 28356.77 N. Seepage 1.21 37.58 S. Seepage 473.29 14672.03 Bottom Seepage 517.41 16039.64 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 133.82 4148.48 ID Pumped Water 694.15 21518.73 Added Water (e.g. L-31E) 92.73 2874.76 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 2831.74 87783.92 W. Seepage 0.00 0.00 E. Seepage -3191.19 -98926.85 N. Seepage -1.57 -48.81 S. Seepage -23.20 -719.15 Bottom Seepage -6108.72 -189370.45 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -9324.69 -289065.26 Modeled Change in CCS Storage: -6492.95 -201281 Observed Change -9424.38 -282731.28 5-123

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

December 2014 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 2.98 92.26 E. Seepage 1559.53 48345.42 N. Seepage 0.00 0.00 S. Seepage 881.57 27328.52 Bottom Seepage 1696.12 52579.83 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 140.97 4370.16 ID Pumped Water 26.26 814.17 Added Water (e.g. L-31E) 59.81 1853.98 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 4367.24 135384.33 W. Seepage 0.00 0.00 E. Seepage -1487.27 -46105.22 N. Seepage -1.54 -47.88 S. Seepage 0.00 0.00 Bottom Seepage -1719.22 -53295.82 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -3208.03 -99448.92 Modeled Change in CCS Storage: 1159.21 35935.42 Observed Change 611.65 18961.30 5-124

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

January 2015 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 2.78 86.16 E. Seepage 1889.33 58569.13 N. Seepage 0.00 0.00 S. Seepage 773.79 23987.45 Bottom Seepage 2010.64 62329.98 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 151.96 4710.77 ID Pumped Water 0.00 0.00 Added Water (e.g. L-31E) 1906.00 59086.05 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 6734.50 208769.55 W. Seepage 0.00 0.00 E. Seepage -826.80 -25630.88 N. Seepage -1.31 -40.72 S. Seepage 0.00 0.00 Bottom Seepage -917.38 -28438.86 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -1745.50 -54110.46 Modeled Change in CCS Storage: 4989.00 154659.08 Observed Change -870.42 -26983.15 5-125

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

February 2015 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 4.84 150.08 E. Seepage 3093.63 95902.56 N. Seepage 0.00 0.00 S. Seepage 955.91 29633.23 Bottom Seepage 1270.26 39378.13 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 138.29 4286.90 ID Pumped Water 236.74 7339.05 Added Water (e.g. L-31E) 2784.16 86308.84 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 8483.83 262998.80 W. Seepage 0.00 0.00 E. Seepage -896.00 -27775.96 N. Seepage -1.48 -46.03 S. Seepage 0.00 0.00 Bottom Seepage -6247.18 -193662.57 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -7144.66 -221484.56 Modeled Change in CCS Storage: 1339.17 41514.24 Observed Change 4227.51 118370.20 5-126

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

March 2015 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 6.84 211.99 E. Seepage 2514.31 77943.47 N. Seepage 0.00 0.00 S. Seepage 736.80 22840.77 Bottom Seepage 150.96 4679.72 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 166.66 5166.45 ID Pumped Water 679.17 21054.32 Added Water (e.g. L-31E) 3082.46 95556.22 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 7337.19 227452.93 W. Seepage 0.00 0.00 E. Seepage -1398.29 -43347.03 N. Seepage -7.42 -230.11 S. Seepage 0.00 0.00 Bottom Seepage -19423.49 -602128.07 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -20829.20 -645705.21 Modeled Change in CCS Storage: -13492.01 -418252.28 Observed Change -2936.23 -91023.19 5-127

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

April 2015 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 10.69 331.39 E. Seepage 8653.51 268258.95 N. Seepage 0.03 0.84 S. Seepage 822.92 25510.60 Bottom Seepage 3021.01 93651.27 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 174.87 5420.98 ID Pumped Water 1658.22 51404.67 Added Water (e.g. L-31E) 2860.71 88682.03 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 17201.96 533260.73 W. Seepage 0.00 0.00 E. Seepage -36.09 -1118.73 N. Seepage -11.26 -349.19 S. Seepage 0.00 0.00 Bottom Seepage -22298.06 -691239.80 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -22345.41 -692707.72 Modeled Change in CCS Storage: -5143.45 -159446.99 Observed Change 7414.73 222441.78 5-128

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-5. Calculated Mass Flows from Salt Budget Components.

May 2015 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 8.19 253.84 E. Seepage 4340.30 134549.32 N. Seepage 1.26 39.14 S. Seepage 892.08 27654.53 Bottom Seepage 1451.68 45002.18 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 210.76 6533.60 ID Pumped Water 54.44 1687.60 Added Water (e.g. L-31E) 1165.96 36144.64 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 8124.67 251864.86 W. Seepage 0.00 0.00 E. Seepage -46.13 -1430.13 N. Seepage -1.49 -46.24 S. Seepage 0.00 0.00 Bottom Seepage -7318.65 -226878.25 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -7366.28 -228354.61 Modeled Change in CCS Storage: 758.39 23510.24 Observed Change -3963.43 -122866.42 5-129

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-6. Calculated Fluid Flows from Water Budget Components for (Pre-Uprate).

September 2010 to February 2012 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.30 522.73 E. Seepage 5.01 8694.66 N. Seepage 0.00 1.78 S. Seepage 1.08 1871.80 Bottom Seepage 2.29 3968.39 Precipitation and Runoff 6.74 11687.03 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.13 226.76 Unit 5 Blowdown 0.53 925.77 ID Pumping 1.53 2648.39 Added Water (e.g. L-31E) 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 17.62 30547.30 W. Seepage 0.00 -2.67 E. Seepage -1.15 -1986.23 N. Seepage 0.00 -5.93 S. Seepage 0.00 -6.46 Bottom Seepage -5.65 -9798.61 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -11.34 -19672.07 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -18.15 -31471.97 Modeled Change in CCS Storage: -0.53 -924.67 Observed Change -1.13 -616.65 5-130

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-6. Calculated Fluid Flows from Water Budget Components (Interim).

March 2012 to May 2013 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.21 362.95 E. Seepage 2.55 4418.81 N. Seepage 0.00 7.07 S. Seepage 0.74 1283.45 Bottom Seepage 2.64 4572.75 Precipitation and Runoff 5.68 9847.12 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.14 243.76 Unit 5 Blowdown 0.50 861.70 ID Pumping 0.82 1428.30 Added Water (e.g. L-31E) 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 13.28 23025.91 W. Seepage 0.00 -0.70 E. Seepage -1.28 -2212.48 N. Seepage 0.00 -1.38 S. Seepage 0.00 -5.45 Bottom Seepage -2.47 -4286.45 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -8.85 -15341.70 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -12.60 -21848.17 Modeled Change in CCS Storage: 0.68 1177.74 Observed Change 2.36 1077.38 5-131

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-6. Calculated Fluid Flows from Water Budget Components (Post-Uprate).

June 2013 to May 2015 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.26 444.00 E. Seepage 6.02 10444.35 N. Seepage 0.00 7.52 S. Seepage 1.49 2575.27 Bottom Seepage 3.94 6837.60 Precipitation and Runoff 7.10 12312.81 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.22 380.50 Unit 5 Blowdown 0.93 1605.64 ID Pumping 1.23 2129.31 Added Water (e.g. L-31E) 1.93 3352.82 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 23.12 40089.83 W. Seepage 0.00 -1.30 E. Seepage -1.01 -1742.78 N. Seepage 0.00 -3.14 S. Seepage -0.02 -32.13 Bottom Seepage -3.13 -5419.68 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -19.34 -33528.70 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -23.49 -40727.72 Modeled Change in CCS Storage: -0.37 -637.89 Observed Change -1.76 -1286.06 5-132

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-7. Calculated Mass Flows from Salt Budget Components (Pre-Uprate).

September 2010 to February 2012 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 2.28 3952.60 E. Seepage 1454.26 2521693.12 N. Seepage 0.21 369.94 S. Seepage 209.49 363248.88 Bottom Seepage 742.22 1287006.96 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 38.99 67601.64 ID Pumped Water 229.35 397692.82 Added Water (e.g. L-31E) 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 2676.80 4641565.97 W. Seepage -24.18 -41936.73 E. Seepage -406.03 -704049.99 N. Seepage -1.58 -2738.28 S. Seepage -1.66 -2873.69 Bottom Seepage -2516.05 -4362837.54 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -2949.50 -5114436.23 Modeled Change in CCS Storage: -272.70 -472870.26 Observed Change -502.50 -274869.07 5-133

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-7. Calculated Mass Flows from Salt Budget Components (Interim).

March 2012 to May 2013 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 1.43 2486.99 E. Seepage 686.33 1190089.51 N. Seepage 0.88 1527.13 S. Seepage 149.36 258989.04 Bottom Seepage 669.24 1160455.22 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 36.29 62923.11 ID Pumped Water 47.22 81870.84 Added Water (e.g. L-31E) 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 1590.74 2758341.84 W. Seepage -4.64 -8039.73 E. Seepage -521.22 -903788.60 N. Seepage -0.39 -684.84 S. Seepage -1.27 -2199.92 Bottom Seepage -1107.53 -1920463.42 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -1635.05 -2835176.51 Modeled Change in CCS Storage: -44.31 -76834.67 Observed Change 372.47 170219.73 5-134

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Table 5.3-7. Calculated Mass Flows from Salt Budget Components (Post-Uprate).

June 2013 to May 2015 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 2.41 4177.83 E. Seepage 1733.45 3005802.21 N. Seepage 0.80 1391.65 S. Seepage 305.52 529773.17 Bottom Seepage 1060.44 1838796.14 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 67.62 117247.84 ID Pumped Water 83.73 145192.82 Added Water (e.g. L-31E) 219.43 380491.12 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 3473.40 6022872.76 W. Seepage -17.33 -30042.65 E. Seepage -539.78 -935977.91 N. Seepage -1.34 -2329.95 S. Seepage -8.51 -14757.14 Bottom Seepage -1991.88 -3453917.68 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -2558.84 -4437025.34 Modeled Change in CCS Storage: 914.56 1585847.43 Observed Change 233.18 170219.73 5-135

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 (A)

(B)

Figure 5.3-1. Flow (A) into and (B) out of the CCS, Shown in Cross-Section.

5-143

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Figure 5.3-2. Modeled versus Measured Net Monthly Flows of Water for the CCS over the 57-Month Period .

5-144

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Figure 5.3-3. Modeled versus Measured Net Monthly Flows of Salt Mass for the CCS over the 57-Month Period .

5-145

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Figure 5.3-4. Modeled versus Measured Water Elevations (NAVD 88) in the CCS over the 57-Month Period; Used to Validate the Conceptual Model and Calibrate the Water Balance Model to Temporal Trends in Water Elevation.

5-146

FPL Turkey Point Comprehensive Post-Uprate Monitoring Report for Units 3 & 4 Uprate Project - March 2016 Section 5 Figure 5.3-5. Modeled versus Measured Salinity in the CCS over the 57-Month Period; Used to Validate the Conceptual Model and Calibrate the Water Balance Model to Temporal Trends in Salinity.

5-147

1009496.0001.06.02 Turkey Point Plant Annual Monitoring Report An August 2016 Au Prepared for for: Prepared by:

ecology and environment, inc.

Global Environmental Specialists

FPL Turkey Point Annual Monitoring Report August 2016 Section 5 Figures 5.1-5 and 5.1-6 depict chloride concentration cross-sections for March 2016. The approximate location of the 19,000 mg/L chloride line is shown. MDC has defined hypersaline water as chloride concentrations above 19,000 mg/L (MDC 2015a). This isopleth represents an estimated extent of hypersaline water west of the CCS and is based on interpolation methods and best professional judgment. Further refinement of this line will be made based on additional monitoring data collected.

5.2 Water and Salt Balance Model Tetra Tech developed a model of the water and salt balance for the CCS. The purpose of this model is to quantify the volume of water and mass of salt entering and exiting the CCS over a 12-month period. Details of this Excel-based model, the underlying conceptualization of the relationship between the CCS and the surrounding environmental systems, key calculations, and results were provided in the Comprehensive Pre-Uprate Monitoring Report (FPL 2012a). That version of the model simulated water and salt flow to and from the CCS for the period between September 2010 and June 2012. The conceptual model and associated calculations are predominantly unchanged since last presented in the Comprehensive Pre-Uprate Monitoring Report (FPL 2012a). In the Comprehensive Post-Uprate Monitoring Report, refinements to the model were made and water and salt flow to and from the CCS was simulated for the period between September 2010 and May 2015. In this report, the modeled period encompasses the reporting period (12-month period) from June 2015 through May 2016. This period includes the effects of the CCS salinity reduction efforts. A brief summary of the model is provided below.

Model results and corresponding conclusions regarding the operation of the CCS are based on the current calibrated water and salt balance model and are provided herein. The Excel spreadsheet that comprises the model is provided in a separate data file.

5.2.1 Model Summary As Figure 5.2-1 depicts, the water balance for the proposed control volume for this monitoring period is comprised of seepage (lateral through the sides and vertical through the bottom),

blowdown (additional water pumped from other units to the CCS), added water (pumped from L-31E canal and/or groundwater), precipitation (including runoff from earthen berms between canals), and evaporation. Aside from evaporation and precipitation, these are the same mechanisms by which salt flows into and out of the CCS. The means by which water and/or salt is transferred (e.g., seepage, evaporation) are calculated using various equations provided in the Comprehensive Pre-Uprate Monitoring Report (FPL 2012a). Calculations were performed for a 12-month period from June 2015 through May 2016. Average flows of water and salt into and out of the control volume were calculated for each day of this period using hydrologic, water quality, and meteorological data measured within, beneath, and adjacent to the CCS. The average daily flows were summed to estimate the amount of water and salt that enters or exits the control volume (i.e., the CCS) during each month and the entire 12-month period. These calculations demonstrate and validate the conceptual model of the CCS and, in so doing, illustrate the hydrologic mechanisms by which the CCS functions.

5-4

FPL Turkey Point Annual Monitoring Report August 2016 Section 5 Calculated water flows are reported in 106 gallons per day (millions of gallons per day [MGD]).

The mass flux into or out of the control volume is calculated by multiplying the volumetric flow by the salinity of the body of water from which the water is flowing. Salinity was monitored at all groundwater and surface water stations employed in the ensuing calculations and was reported in the practical salinity scale (PSS-78), which is equivalent to grams per liter (g/L).

Calculated mass fluxes are reported in thousands of pounds per day (lb x 1,000/day).

The gain/loss of water and salt mass within the control volume during some period of time results in a change in the control volumes water and salt mass storage. Increased water storage, for instance, occurs when more water enters the control volume than exits. Storage, then, can be estimated by summing all of the components of the water (and salt) balance. When the net flow is positive (into the control volume) during a specified period of time, the storage of control volume increases. Conversely, a net negative (out of the control volume) flow implies a decrease in storage during a specified time period.

Another manner in which a change in storage can be estimated relies on direct measurements of water elevations and salinities within the control volume. A change in water elevation within the control volume can be calculated as a difference between water elevations at the beginning and end of a specified time period. The product of this change in water elevations and the surface area of the control volume provide an estimate of the change in the volume of water contained in the control volume during that period of time. Estimates of daily storage changes derived from this method are used to further calibrate the water and salt balance model to ensure an accurate simulation of temporal trends for CCS water elevation and salinity.

5.2.2 Model Calibration, Results, and Discussion The individual components of the water and salt balance were simulated daily and summed for each month from June 2015 through May 2016, as well as for the collective 12-month period.

The individual components of flow are summed in order to calculate a simulated change in volume for each month and for the 12-month period. These simulated changes in storage were compared to observed changes in CCS water and salt storage for each month and the entire calibration period (June 2015 through May 2016). Errors between the simulated and observed storage changes were minimized by adjusting key variables associated with the flow balance model; this process is called calibration. The calibration process ensures that the model can accurately reflect the average changes in CCS storage over the 12-month time frame, while also effectively capturing day-to-day changes in CCS water and mass storage. Calibration of the water and salt balance model was achieved by adjusting hydraulic conductivities of the aquifer materials adjacent to and beneath the CCS that factor into the calculation of seepage to/from groundwater and Biscayne Bay. Additional adjustable parameters include the coefficients in the wind function (FPL 2012a), the amount of runoff that enters the control volume as percentage of precipitation, the amount of Unit 5 cooling tower water that is lost to evaporation before entering the CCS, and the salinity of the Unit 5 blowdown as a percentage of seawater. The calibrated model parameter values are provided in Table 5.2-1.

5-5

FPL Turkey Point Annual Monitoring Report August 2016 Section 5 5.2.2.1 Parameter Adjustments The horizontal hydraulic conductivities laterally adjacent to the control volume were calibrated to range between 100 ft/day and 500 ft/day. The calibrated vertical conductivities beneath the control volume ranged from 0.1 ft/day to 2 ft/day. In order to achieve a better match to observed hydrologic and salt concentration conditions, the northern portion of the internal discharge canals into the CCS and return canals were calibrated to have higher vertical hydraulic conductivities (1.9 ft/day and 0.9 ft/day, respectively) than the middle/southern portions of the internal CCS discharge canals and southern portion of the return canals (0.1 ft/day). The variability in these vertical hydraulic conductivities is attributable to the non-uniform depth of a shallow high flow zone that is variably intersected by deeper CCS canals. The magnitudes of and variability in horizontal and vertical hydraulic conductivities are on the same order of magnitude as those in the prior model, where vertical hydraulic conductivity ranged from 0.1 to 3 ft/day and horizontal hydraulic conductivities ranged from 400 to 850 ft/day.

In addition to changes in hydraulic conductivities, revisions were made to both evaporation and precipitation. The equation for evaporation (FPL 2012a) includes an empirical factor. This factor was reduced from 0.66 to 0.60 during the calibration of the 12-month balance model. As the modeled balance is very sensitive to evaporative losses, this was a significant change. The percentage of additional precipitation-based inflow due to runoff from canal berms is an adjustable model parameter. This parameter is time-invariant and increases precipitation-based inflow for all precipitation events; as the precipitation increases, so too does the additional runoff inflow. Since the precipitation is a key inflow to the CCS for moderating salinity, the balance model is sensitive to this parameter. The balance is also sensitive to precipitation-based inflow.

As such, the reduction of runoff-based inflow from 35% to 10% of precipitation was also a notable change. This adjustment was necessary in order to match both the balance of water and salt flows, as well as the magnitude of CCS water levels and salinity, particularly in months with notable rainfall events.

The impact of the parameters changes, particularly the adjustments made to evaporation and precipitation parameters, is a relatively accurate simulation of the monthly flow balance and simulated daily CCS conditions during the 12-month period between June 2015 and May 2016.

5.2.2.2 Flow Balance Comparisons Results of the calibrated 12-month water and salt balance model are provided in Tables 5.2-2 and 5.2-3, respectively. The modeled net flow of water, as calculated by summing the components of the water balance for the 12-month calibration period, is denoted as the Modeled Change in CCS Storage and was calculated to be an average outflow of 0.63 MGD over the 12-month calibration period. The observed change in storage, which is the difference in the volume of water in the CCS between the final and first days of the calibration period, divided by the number of days in the period, was observed to be an increase in storage at a rate of 1.17 MGD.

Though the model underestimated the change in storage, the residual error between the simulated and observed flow is only 1.8 MGD. This error is small (2.3%) relative to the variability in monthly net observed flows, which range from a net outflow of 34.4 MGD (February 2016) and a net inflow of 42.7 MGD (September 2015).

5-6

FPL Turkey Point Annual Monitoring Report August 2016 Section 5 The model simulated a net loss of salt over the 12-month period at rate of 3,723 (lb x 1,000)/day.

The corresponding observed rate of salt outflow was calculated by multiplying the average observed salinity in the CCS on the final day and first day of the calibration period by the corresponding CCS volumes on those days. The difference between these two products, divided by the number of days in the calibration period, provides the observed net outflow of salt, 2,958 (lb x 1,000)/day. The error associated with the mass flux is an overestimation by approximately 765 (lb x 1,000)/day. As in the case of water balance simulation, the magnitude of this overestimation is small (2.4%) relative to the range in monthly average flows: the observed monthly net mass fluxes range from an outflow of 20,838 (lb x 1,000)/day (November 2015) to an inflow of 10,965 (lb x 1,000)/day (July 2016).

Figures 5.2-2 and 5.2-3 illustrate the models ability to match the magnitude and direction of net monthly flows of water and salt, respectively. Figure 5.2-2 compares observed and modeled net monthly flows of water into and out of the CCS. There is a general seasonal trend in observed flows to/from the CCS, where inflows are generally associated with the wet season and outflows are generally associated with the dry season. The key exception to the dry season outflows occurs in December 2015, during which a total of approximately 15 inches of precipitation fell on the CCS. The model is able to replicate the general trends in flow, as well as the unusual inflow of water in December, with reasonable accuracy. However, there are two isolated months where the model does not accurately simulate the net flow (i.e., April 2016 and May 2016).

During these two months, the model simulates a loss of storage (net outflow), whereas an increase in storage was observed.

Figure 5.2-3 compares observed and modeled net monthly flows of salt into and out of the CCS.

A seasonal trend in salt mass flows is apparent (storage decrease during dry season, storage increase during wet season). Like the modeled water flows, estimated salt mass fluxes generally match observed fluxes well. Note that a significant reduction in salt storage (salt outflow) was observed in November and December 2015. The reductions in salt storage observed during these two months are largely attributable to seepage to groundwater. Previously, the greatest observed rate of salt loss (12,726 lb x 1,000/day) from the CCS occurred in October 2014 (FPL 2014); the October through December 2015 salt outflows exceed the October 2014 outflow by 4%, 64%,

and 31%, respectively. Conversely, the calculated volumetric water seepage in these three months exceeds that of October 2014 (25.65 MGD) by 4%, 21%, and 110%, respectively. As such, the greater salt mass outflow in late-2015 is attributable to greater water seepage at a relatively lower concentration of salt. This is consistent with the observed range of CCS salinity in late-2015 (34 to 58 g/L) being lower than the range of CCS salinity in October 2014 (65 to 85 g/L). It is important to note that the increased seepage of water from the CCS is a hydrologic response to the addition of L-31E canal water at an average rate of 21 MGD during October and November 2015 and the significant precipitation-based (14.7 inches of rainfall) inflow to the CCS in December 2015.

5.2.2.3 Simulated CCS Water Levels and Salt Implicit in the models ability to simulate monthly net water and salt mass flows is the accurate simulation of daily flows to and from the CCS. Because the model is able to characterize the 5-7

FPL Turkey Point Annual Monitoring Report August 2016 Section 5 daily flows of water and salt, the model estimates the daily changes in CCS water and salt storage. As previously mentioned, these changes in storage are associated with daily changes in CCS water levels and salinity. Figure 5.2-4 shows the model-calculated water level in the CCS, which varies over the period of record. These modeled water levels range between approximately -1.1 ft North American Vertical Datum of 1988 (NAVD 88) and 2.1 ft NAVD 88, and reflect an average water level throughout the entire CCS. Also shown in this figure are the observed CCS water levels over time; the observed values reflect the mean of daily-averaged water elevations across the seven sensors in the CCS. Note, the maximum average observed CCS water level (1.7 ft NAVD 88) exceeds the previous maximum (since fall 2010) average observed CCS water level (0.87 ft NAVD 88) by 0.83 ft.

As mentioned above, nearly 15 inches of rain fell on the CCS in December 2015; this amount of rainfall far exceeds the average December rainfall at Turkey Point over the previous 5 years (0.86 inches). Simulated water elevations are calculated by dividing the simulated daily change in CCS storage by the average daily CCS surface area and adding the resulting value (which reflects a change in water level) to the previous days simulated water elevation. It is evident from this figure that the model effectively captures the general trend in CCS water elevations over the 12-month period, and accurately simulates average CCS water elevations throughout much of the calibration period.

Similarly, changes in salt mass storage within the CCS can be used to calculate average CCS salinity changes over time. The simulated daily net flow of salt is divided by the simulated volume of water in the CCS, which results in a change in salinity. This change in salinity is added to the simulated salinity calculated for the previous day to produce a simulated salinity for the current day. Like the simulated CCS water level, the modeled salinity reflects a representative daily salinity throughout the CCS. Figure 5.2-5 compares the simulated salinities to those observed in the CCS over the period of record. Observed salinities are the mean of daily averaged salinities measured in the CCS monitoring stations. The modeled CCS salinity changes over time match changes in the average observed CCS salinity throughout the 12-month period of record. This timeframe includes a reduction in average observed CCS salinity from approximately 95 g/L (PSS-78 scale) in June 2015 to approximately 34 g/L (PSS-78 scale) in December 2015; subsequent to the reduction in CCS salinity between June and December 2015, CCS salinity generally increased to approximately 55 g/L (PSS-78 scale). The ability of the model to match both increasing and decreasing trends in salinity reinforces the underlying conceptual model, which suggests that changes in CCS salinity are predicated solely on changes in the flow of water (which includes evaporation) into and out of the CCS.

5.2.2.4 Conclusions The accurate simulation of changing CCS inflows, outflows, water elevations, and salinities is complex due to the different components of the balance model and their varying impacts upon CCS water and salt storage. For instance, vertical flows into and out of the control volume are generally larger than horizontal flows, and have a greater impact on CCS water elevation. The salinity of inflowing water, however, can vary depending upon the source of the water. For example, horizontal flow from the west (L-31E) is non-saline and has a pronounced mitigating impact on CCS salinities; vertical flow from groundwater beneath portions of the internal CCS 5-8

FPL Turkey Point Annual Monitoring Report August 2016 Section 5 discharge canals is saline to hyper-saline and generally increases the salinity of the CCS. The correct balance of both water and salt mass flow is difficult to estimate in the model. In addition, observed CCS return canal intake (i.e., at TPSWCCS-6) water temperatures varied over 17°C (from approximately 18°C to 35°C) during the simulated timeframe. The model addresses associated impacts to the CCS by explicitly simulating the effects of water/air temperature gradients on evaporation. Whereas myriad sources and sinks of water, varying salinities, and changes in water temperature do increase model complexity, the need to accurately simulate these different components of CCS operation constrains the number of possible solutions.

The simulated timeframe includes a 3-month period where salt mass outflows from the CCS exceed the greatest monthly salt outflow from the previous 4.5 years, which occurred in October 2014. Unlike the salt mass outflow in October 2014, where the outflowing water was of a higher salinity, those mass outflows calculated for October through December 2015 are attributable to a large amount of water at a lower salinity. These outflows occurred due to the higher than normal rainfall that occurred from August through December 2015 coupled with CCS salinity reduction efforts. Consequently, there were greater outflows of water and salt mass from the CCS to the underlying aquifer, primarily from October 2015 through December 2015.

Though the model is able to simulate the complex dynamics associated with the CCS over a 12-month timeframe with reasonable accuracy, there are periods of time where the simulated flows of water and salt do not accurately reflect observed conditions. Consequently, the simulated water level and salinities in the CCS deviate from those that have been observed at various times in the simulation period. However, the overall performance of the model reinforces its utility as a tool for understanding how the CCS has operated, and will operate, under varying meteorological, hydrological, and operational conditions. This is best demonstrated by the fact that the same conceptual model employed to characterize changes in CCS storage of water and salt during the reporting period was used to explain changes in storage during the prior approximately 4.5-year Uprate monitoring period.

The robustness and accuracy in the model underpins FPLs firm understanding of processes that control the CCS and the manner in which the CCS interacts with the adjacent aquifer and water bodies. This accuracy in simulating the historical changes within the CCS bolsters confidence in the models utility as a tool to evaluate the sensitivity of CCS operations to certain factors such as changes in operation, drought conditions, storm events, and other potential environmental stresses. Additionally, the model accuracy validates the fact that the most appropriate data are being collected to effectively capture CCS operations, identify interactions between the CCS and the surrounding environment, and support FPLs comprehension of historical and future operations of the CCS.

5-9

FPL Turkey Point Annual Monitoring Report August 2016 Section 5 TABLES

FPL Turkey Point Annual Monitoring Report August 2016 Section 5 Table 5.2-1. Calibration Parameters Calibrated Parameter Name Value Units Vertical Hydraulic Conductivity (Zone A) 1.9 ft/day Vertical Hydraulic Conductivity (Zone B) 0.1 ft/day Vertical Hydraulic Conductivity (Zone C) 0.1 ft/day Vertical Hydraulic Conductivity (Zone D) 0.9 ft/day West Face Hydraulic Conductivity 500 ft/day East Face Hydraulic Conductivity 100 ft/day North Face Hydraulic Conductivity 500 ft/day South Face Hydraulic Conductivity 500 ft/day Evaporation Modifier (Factor Multiplier) 0.60 Runoff Modifier (as % of Precipitation) 10%

Blowdown Evaporation Factor 50%

Blowdown Concentration (as % of Seawater) 0.50 5-10

FPL Turkey Point Annual Monitoring Report August 2016 Section 5 Table 5.2-2. Calculated Fluid Flows from Water Budget Components June 2015 to May 2016 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.45 162.92 E. Seepage 0.69 252.32 N. Seepage 0.01 3.35 S. Seepage 1.40 512.04 Bottom Seepage 0.72 260.35 Precipitation and Runoff 24.67 9027.57 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.55 202.90 Unit 5 Blowdown 0.30 111.01 ID Pumping 6.43 2353.27 Added Water (e.g. L-31E) 20.96 7671.49 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 56.17 20557.25 W. Seepage 0.00 -0.37 E. Seepage -1.91 -697.91 N. Seepage -0.02 -5.93 S. Seepage -0.76 -278.48 Bottom Seepage -17.48 -6399.32 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -36.32 -13292.30 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -56.49 -20674.56 Modeled Change in CCS Storage: -0.63 -302.38 Observed Change 1.17 427.31 Key:

CCS = Cooling Canal System.

gal = Gallon.

ID = Interceptor Ditch.

MGD = Million gallons per day.

5-11

FPL Turkey Point Annual Monitoring Report August 2016 Section 5 Table 5.2-3. Calculated Mass Flows from Salt Budget Components June 2015 to May 2016 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 2.57 942.07 E. Seepage 199.17 72897.33 N. Seepage 0.07 24.17 S. Seepage 335.06 122633.52 Bottom Seepage 230.58 84391.66 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 44.30 16212.85 ID Pumped Water 563.79 206345.63 Added Water (e.g. L-31E) 3815.95 1396636.59 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 5191.49 1900083.83 W. Seepage -80.88 -29603.04 E. Seepage -694.08 -254032.84 N. Seepage -6.16 -2254.91 S. Seepage -279.55 -102315.54 Bottom Seepage -7853.90 -2874527.56 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -8914.57 -3262733.89 Modeled Change in CCS Storage: -3723.09 -1362650.06 Observed Change -2958.37 -1082764.47 Key:

CCS = Cooling Canal System.

ID = Interceptor Ditch.

lb = Pound(s).

5-12

FPL Turkey Point Annual Monitoring Report August 2016 Section 5 (A)

(B)

Figure 5.2-1. Flow into (A) and out of (B) the CCS, Shown in Cross-Section.

5-19

FPL Turkey Point Annual Monitoring Report August 2016 Section 5 60 Modeled Flow Observed Flow 40 20 Water Flow (MGD) 0 Jun-15 Jul-15 Aug-15 Sep-15 Oct-15 Nov-15 Dec-15 Jan-16 Feb-16 Mar-16 Apr-16 May-16

-20

-40

-60 Figure 5.2-2. Modeled versus Measured Net Monthly Flows of Water for the CCS during the Reporting Period.

5-20

FPL Turkey Point Annual Monitoring Report August 2016 Section 5 25000 Modeled Flow 20000 Observed Flow 15000 10000 Salt Flow (lb x 1000/day) 5000 0

Jun-15 Jul-15 Aug-15 Sep-15 Oct-15 Nov-15 Dec-15 Jan-16 Feb-16 Mar-16 Apr-16 May-16

-5000

-10000

-15000

-20000

-25000 Figure 5.2-3. Modeled versus Measured Net Monthly Flows of Salt Mass for the CCS during the Reporting Period.

5-21

FPL Turkey Point Annual Monitoring Report August 2016 Section 5 2.5 2

1.5 CCS Water Elevation (ft NAVD 88) 1 0.5 0

-0.5

-1

-1.5 Simulated Water Elevations Measured Water Elevations

-2 Figure 5.2-4. Modeled versus Measured Water Elevations (NAVD 88) in the CCS during the Reporting Period; Used to Validate the Conceptual Model and Calibrate the Water Balance Model to Temporal Trends in Water Elevation.

5-22

FPL Turkey Point Annual Monitoring Report August 2016 Section 5 100 Simulated Concentration (g/L) 90 Measured Concentration (g/L) 80 CCS Salinity (g/L) 70 60 50 40 30 Figure 5.2-5. Modeled versus Measured Salinity in the CCS during the Reporting Period; Used to Validate the Conceptual Model and Calibrate the Water Balance Model to Temporal Trends in Salinity.

5-23

Turkey Point Plant Annual Monitoring Report A

September 2017 Prepared for: Prepared by:

ecology and environment, inc.

Global Environmental Specialists 1009496.0001.06.02

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 5.2 Water and Salt Balance Model Tetra Tech, Inc., developed a model of the water and salt balance for the CCS. The purpose of this model was to quantify the volume of water and mass of salt entering and exiting the CCS over a 24-month period. Details of this Excel-based model, the underlying conceptualization of the relationship between the CCS and the surrounding environmental systems, key calculations, and results were provided in the Comprehensive Pre-Uprate Monitoring Report (FPL 2012a).

That version of the model simulated water and salt flow to and from the CCS for the period between September 2010 and June 2012. In the Comprehensive Post-Uprate Monitoring Report, refinements to the model were made and water and salt flows to and from the CCS were simulated for the period between September 2010 and May 2015. In this report, the modeled period encompasses the reporting period (24-month period) from June 2015 through May 2017; while the reporting period is June 2016 through May 2017, the associated monitoring data were employed to append the reporting period to the existing balance model. This approach is followed because many of the parameters adjusted during calibration reflect changed CCS conditions that occurred during or just prior to the reporting period. The 24-month timeframe reflects influences associated with partial canal sediment removal, salinity reduction actions due to the addition of marine groundwater and L-31E canal water during the spring through late summer 2015, and decommissioning of Unit 1, the addition of low salinity UFA groundwater, and the extended extraction and disposal of hypersaline groundwater from beneath the CCS beginning in the fall of 2016.

The conceptual model and associated calculations were predominantly unchanged since the previous time they were presented (i.e., in the 2012 Comprehensive Pre-Uprate Monitoring Report) (FPL 2012a). As such, only a brief summary of the model is provided below. Model results and corresponding conclusions regarding the operation of the CCS are based on the current calibrated water and salt balance model and are provided herein. The Excel spreadsheet that comprises the model is provided in a separate data file.

5.2.1 Model Summary As Figure 5.2-1 depicts, the water balance for the control volume (CCS) is comprised of groundwater seepage (lateral through the sides and vertical through the bottom), blowdown (additional water pumped from other units to the CCS), water added for CCS salinity management (pumped from L-31E and/or groundwater), precipitation (including runoff from earth berms between canals), and evaporation. Aside from evaporation and precipitation, these are the same mechanisms by which salt flows into and out of the CCS. The means by which water and/or salt is transferred (e.g., seepage, evaporation) are calculated using various equations provided in the 2012 Comprehensive Pre-Uprate Monitoring Report (FPL 2012a). For this report, calculations were performed for a 24-month period from June 2015 through May 2017.

Average flows of water and salt into and out of the control volume were calculated for each day of this period using hydrologic, water quality, and meteorological data measured within, beneath, and adjacent to the CCS. The average daily flows were summed to estimate the amount of water and salt that enters or exits the control volume (i.e., the CCS) during each month and the entire 5-5

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 24-month period. These calculations demonstrate and validate the conceptual model of the CCS and, in so doing, illustrate the hydrologic mechanisms by which the CCS functions.

Calculated water flows are reported in 106 gallons per day (mgd). The mass flux into or out of the control volume is calculated by multiplying the volumetric flow by the salinity of the body of water from which the water is flowing. Salinity was monitored at all groundwater and surface water stations employed in the ensuing calculations and was reported in the PSS-78 scale, which is equivalent to grams per liter (g/L). Calculated mass fluxes are reported in thousands of pounds per day (lb x 1,000/day).

The gain/loss of water and salt mass within the control volume during some period of time results in a change in the control volumes water and salt mass storage. Increased water storage, for instance, occurs when more water enters the control volume than exits. Storage then can be estimated by summing all of the components of the water (and salt) balance. When the net flow is positive (into the control volume) during a specified period of time, the storage of the control volume increases. Conversely, a net negative (out of the control volume) flow implies a decrease in storage during a specified time period.

Another manner in which a change in storage can be estimated relies on direct measurements of water elevations and salinities within the control volume. A change in water elevation within the control volume can be calculated as a difference between water elevations at the beginning and end of a specified time period. The product of this change in water elevations and the surface area of the control volume provide an estimate of the change in the volume of water contained in the control volume during that period of time. Estimates of daily storage changes derived from this method are used to further calibrate the water and salt balance model to ensure an accurate simulation of temporal trends in CCS water elevation and salinity.

A significant change to the model since it was last calibrated is the representation of continued additions of UFA water. Since November 1, 2016, an average of 12.8 mgd of UFA water have been added to the CCS for salinity abatement purposes. Based on historical data from the operation of the 5 UFA wells, the salinity of the added water is assumed to be 2.63 (in PSS-78 scale) and is assumed to be temporally invariant.

5.2.2 Model Calibration, Results, and Discussion The individual components of the water and salt balance were simulated daily and summed for each month from June 2015 through May 2017, as well as for the collective 24-month period.

The individual components of flow are summed in order to calculate a simulated change in volume for each month and for the 24-month period. These simulated changes in storage were compared to observed changes in CCS water and salt storage for each month and the entire calibration period (June 2015 through May 2017). Errors between the simulated and observed storage changes were minimized by adjusting key variables associated with the flow balance model; this process is called calibration. The calibration process ensures that the model can accurately reflect the average changes in CCS storage over the 24-month timeframe, while also effectively capturing day-to-day changes in CCS water and mass storage. Calibration of the water and salt balance model was achieved by adjusting hydraulic conductivities of the aquifer 5-6

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 materials adjacent to and beneath the CCS that factor into the calculation of seepage to/from groundwater and Biscayne Bay. Additional adjustable parameters include the coefficients in the wind function (FPL 2012a), the amount of runoff that enters the control volume as percentage of precipitation, the amount of Unit 5 cooling tower water that is lost to evaporation before entering the CCS, and the salinity of the Unit 5 blowdown as a percentage of seawater. The calibrated model parameter values are provided in Table 5.2-1.

5.2.2.1 Parameter Adjustments The horizontal hydraulic conductivities laterally adjacent to the control volume were calibrated to range between 500 ft/day (west and north CCS walls) and 1,600 ft/day (south CCS wall). The calibrated vertical conductivities beneath the control volume ranged from 0.1 ft/day to 2.2 ft/day.

In order to achieve a better match to observed hydrologic and salt concentration conditions, the northern portion of the discharge canals into the CCS and return canals were calibrated to have higher vertical hydraulic conductivities (1.4 ft/day and 2.2 ft/day, respectively) than the middle/southern portions of the CCS discharge canals and southern portion of the return canals (0.1 ft/day). The variability in these vertical hydraulic conductivities is attributable to the non-uniform depth of a shallow high-flow zone that is variably intersected by deeper CCS canals.

The magnitudes of and variability in vertical hydraulic conductivities are on the same order of magnitude as those in the prior model (which simulated through November 2016), where vertical hydraulic conductivity ranged from 0.1 to 1.6 ft/day. Horizontal hydraulic conductivities calibrated in this model are also on the same order of magnitude and range of values as those calibrated in the prior model (which simulated through November 2016), which ranged from 100 ft/day (east CCS wall) to 2,400 ft/day (south CCS wall).

In addition to changes in hydraulic conductivities, revisions were made to evaporation. The equation for evaporation (FPL 2012a) includes an empirical factor. This factor was reduced from 0.66 to 0.62 during the calibration of the 24-month balance model. As the modeled balance is very sensitive to evaporative losses, this was a significant change.

The percentage of additional precipitation-based inflow due to runoff from canal berms is an adjustable model parameter. This parameter is time-invariant and increases precipitation-based inflow for all precipitation events; as the precipitation increases, so too does the additional runoff inflow. Since the precipitation is a key inflow to the CCS for moderating salinity, the balance model is sensitive to this parameter. No change was necessary for this parameter, and it is defined to be 20% of direct precipitation inflow.

The impact of the parameters changes, particularly the adjustments made to the evaporation parameters, is a relatively accurate simulation of the monthly flow balance and simulated daily CCS conditions during the 24-month period between June 2015 and May 2017. The effect of these parameter adjustments on the earlier period of record (September 2010 through May 2015),

which were previously simulated by prior versions of the water and salt balance model, were not evaluated as a part of this modeling effort.

5-7

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 5.2.2.2 Flow Balance Comparisons Results of the calibrated 24-month water and salt balance model are provided in Tables 5.2-2 and 5.2-3, respectively. The modeled net flow of water, as calculated by summing the components of the water balance for the 24-month calibration period, is denoted as the Modeled Change in CCS Storage and was calculated to be an average inflow of 1.91 mgd over the 24-month calibration period. In other words, on average over the 24-month period, the volume of water in the CCS increased at a rate of 1.91 mgd. The observed change in storage, which is the difference in the volume of water in the CCS between the final and first days of the calibration period, divided by the number of days in the period, was observed to be an increase in storage at a rate of 0.39 mgd. Though the model overestimated the increase in storage, the residual error between the simulated and observed flow is only 1.52 mgd. This error is small (1.97%) relative to the variability in monthly net observed flows, which range from a net outflow of 34.4 mgd (February 2016) and a net inflow of 42.7 mgd (September 2015). These monthly net flows are provided in the calibrated water and salt balance model included as Appendix K. A summary of the water balance model results for the 2016-2017 reporting period is shown in Table 5.2-4. Note that, on average, the CCS storage increased at rate of approximately 4.27 mgd during the 2016-2017 reporting period, while a smaller amount of water was lost, on average, in the previous year.

The model simulated a net loss (outflow) of salt over the 24-month period at rate of 541 (lb x 1,000)/day. The corresponding observed rate of salt outflow was calculated by multiplying the average observed salinity in the CCS (based on salinities measured at monitoring stations TPSWCCS-1, -2, -4, -5, and -6) on the final and first days of the calibration period by the corresponding CCS volumes on those days. The difference between these two products, divided by the number of days in the calibration period, provides the observed net outflow of salt, 1,089 (lb x 1,000)/day. Thus, the model underestimates the salt outflow by approximately 548 (lb x 1000)/day. As in the case of water balance simulation, the magnitude of this overestimation is small (2.0%) relative to the range in monthly average flows; the observed monthly net mass fluxes range from an outflow of 16,994 (lb x 1,000)/day (November 2015) to an inflow of 10,593 (lb x 1,000)/day (July 2016). During the reporting period, the direction of net salt mass flow was into the CCS at a rate of 1,844 (lb x 1000)/day (Table 5.2-5). Analogous to water storage, this magnitude of flow is within the range of flows prior to June 2015. This stands in stark contrast to the 2015 to 2016 period, when net salt mass flow was out of the CCS at a rate of approximately 4,400 (lb x1000)/day.

Figures 5.2-2 and 5.2-3 illustrate the models ability to match the magnitude and direction of net monthly flows of water and salt, respectively, over the 24-month period. With few exceptions, the model accurately simulated the direction of monthly averaged water and salt flows into and out of the CCS. Figure 5.2-2 compares observed and modeled net monthly flows of water into and out of the CCS. The wet season should be indicative of increased storage and inflow of water into the CCS and, accordingly, the 2015 and (beginning of the) 2017 wet seasons are periods of predominant inflow. However, due to relatively low precipitation, particularly in July 2016, the volume of water in the CCS generally decreased during the 2016 wet season. Dry seasons are marked by reductions in CCS water storage (general outflow). Net reductions in CCS storage are evident between January and March 2016. However, the addition of UFA water 5-8

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 starting in November 2016 is the likely cause of lower monthly outflows during the 2016/2017 dry season.

Figure 5.2-3 compares observed and modeled net monthly flows of salt into and out of the CCS.

Unlike the flows of water in Figure 5.2-2, there is an apparent seasonal trend in salt mass flows (salt storage decrease during dry season, salt storage increase during wet season). Like the modeled water flows, modeled salt mass fluxes generally match observed fluxes well. Note that a significant loss of salt storage (salt outflow) was observed in November and December 2015.

As previously documented, the salt outflows during these months are attributable to large volumetric seepage from the CCS to groundwater. By comparison, the 2016/2017 dry season salt outflows are relatively low. The addition of UFA water has aided in the moderation of dry season salinity without significantly increasing the stage of the CCS. As such, seepage to groundwater during the 2016/2017 dry season is low relative to seepage modeled during the prior dry season. This is discussed further in the conclusions.

5.2.2.3 Simulated CCS Water Levels and Salt Implicit in the models ability to simulate monthly net water and salt mass flows is the accurate simulation of daily flows to and from the CCS. Because the model is able to characterize the daily flows of water and salt, the model estimates the daily changes in CCS water and salt storage. As previously mentioned, these changes in storage are associated with daily changes in CCS water levels and salinity. Figure 5.2-4 shows the model-calculated water levels in the CCS, which varies over the period of record. These modeled water levels range between approximately -1.7 ft North American Vertical Datum of 1988 (NAVD 88) and 2.0 ft NAVD 88 and reflect an average water level throughout the entire CCS. Also shown in Figure 5.2-4 are the observed CCS water levels over time; the observed values reflect the mean of daily-averaged water elevations across the five sensors in the CCS (TPSWCCS-1, -2, -4, -5, -6). The model generally matches the seasonal trends in CCS water level changes (reductions during the dry season and increases during the wet season). However, between July 2016 and January 2017, the model under-simulates the CCS stage. Changes to the model intended to improve this match resulted in a degradation in the quality of the match to CCS salinity.

Changes in salt mass storage within the CCS can be used to calculate average CCS salinity changes over time. The simulated daily net flow of salt is divided by the simulated volume of water in the CCS, which results in a change in salinity. This change in salinity is added to the simulated salinity calculated for the previous day to produce a simulated salinity for the current day. Like the simulated CCS water level, the modeled salinity reflects a representative daily salinity throughout the CCS. Figure 5.2-5 compares the simulated salinities to those observed in the CCS over the period of record. Observed salinities are the mean of daily averaged salinities measured in the CCS monitoring stations (TPSWCCS-1, -2, -4, -5, and -6). The model matches the observed temporal trends in salinity reasonably well. However, the model over-simulates the magnitude of CCS salinity throughout much of the simulated timeframe. Interestingly, this bias is eliminated and the model match to CCS salinity improves in late 2016, when FPL began adding UFA water to the CCS.

5-9

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 5.2.2.4 Interim Activities Affecting Salt Removal While not simulated in the water budget model, it is worth mentioning that FPL proactively initiated removal of hypersaline groundwater (up to 15 mgd) beneath the CCS as part of extended operational testing and monitoring of the UIC well beginning in late September 2016.

Monthly Operating Reports have been submitted to FDEP and are available in the L-31E EDMS site.

Groundwater with a salinity ranging from 54 to 62 PSS-78 scale was pumped from four wells into the injection wells from September 28, 2016, through the end of the reporting period in May 2017. During this time, a total of 1,661 million pounds of salt had been removed from beneath the extraction wells and injected down the UIC. Table 5.2-6 provides a daily summary of the volume of hypersaline water pumped into the injection well and the mass of salt removed.

5.2.2.5 Conclusions General Conclusions The accurate simulation of changing CCS inflows, outflows, water elevations, and salinities is complex due to the different components of the balance model and their varying impacts on CCS water and salt storage. For instance, vertical flows into and out of the control volume are generally larger than horizontal flows and have a greater impact upon CCS water elevation. The salinity of inflowing water, however, can vary depending upon the source of the water. For example, water pumped from the UFA into the CCS is relatively low salinity and, as such, serves to reduce and/or moderate CCS salinity; vertical flow from groundwater beneath portions of the discharge canals to the CCS is saline to hypersaline and generally increases the salinity of the CCS. The correct balance of both water and salt mass flow is difficult to estimate in the model.

In addition, observed CCS water temperatures varied by over 26°C (from approximately 18.3°C at TPSWCCS-6 in January 2016 to 44.4°C at TPSWCCS-1 in August 2016) during the simulated timeframe. The model addresses associated impacts to the CCS by explicitly simulating the effects of water/air temperature gradients on evaporation. Whereas myriad sources and sinks of water, varying salinities, and changes in water temperature do increase model complexity, the need to accurately simulate these different components of CCS operation constrains the number of possible solutions.

Though the model is able to simulate the complex dynamics associated with the CCS over a 24-month timeframe with reasonable accuracy, there are periods of time where the simulated flows of water and salt do not accurately reflect observed conditions. Consequently, the simulated water levels and salinities in the CCS deviate from those that have been observed at various times in the simulation period. However, the overall performance of the model reinforces its utility as a tool for understanding how the CCS has and will operate under varying meteorological, hydrological, and operational conditions. This is best demonstrated by the fact that the same conceptual model employed to characterize changes in CCS storage of water and salt during this 24-month timeframe (June 2015 through May 2017) was used to explain changes in storage during the prior approximately 4.5-year Uprate monitoring period.

5-10

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 The robustness and accuracy in the model underpins FPLs informed understanding of processes that control the CCS and the manner in which the CCS interacts with the adjacent aquifer and water bodies. This accuracy in simulating the historical changes within the CCS bolsters confidence in the models utility as a tool to evaluate the sensitivity of CCS operations to certain factors such as changes in operation, drought conditions, storm events, salinity abatement activities, and other potential environmental stresses. Additionally, the model quality validates the fact that the most appropriate data are being collected to effectively capture CCS operations, identify interactions between the CCS and the surrounding environment, and support FPLs comprehension of historical and future operations of the CCS. Continued application and updating of this model is recommended to improve the quality with which it simulates historical conditions in order to bolster the confidence with which futures decisions regarding CCS operations can be made.

Impacts of UFA Water Additions Perhaps the most important element of the simulated CCS balance during the 24-month timeframe is the continuous addition of UFA water between November 2016 and May 2017.

Earlier predictive modeling concluded that, under normal conditions, the addition of 14 mgd of UFA water would eventually reduce CCS salinity to 34 PSS-78. Because this has not yet occurred, it is important to analyze model results in order to better understand what is driving the changes in salinity.

Two key elements of the CCS water and salt balance model that influence the temporal change in CCS salinity are precipitation inflows (the addition of freshwater to the CCS) and evaporative outflows (the removal of freshwater from the CCS). Precipitation-based inflows help to reduce and/or moderate CCS salinity; evaporative losses cause increases in salinity. Monthly evaporative flow rates are generally greater than precipitation flow rates. As such, the difference between monthly precipitation and evaporation (precipitation minus evaporation) is usually negative. During months when this difference is near-zero or positive, CCS salinity will generally decrease. This is evident from September 2015 through January 2016, when positive and near-zero differences between precipitation and evaporation (Figure 5.2-6) helped to produce a reduction in salinity from 79 PSS-78 to 35 PSS-78. Note, FPL also added L-31E canal water through November 2015, which also helped to reduce CCS salinity.

In the months that followed (February through July 2016), monthly evaporation was consistently and significantly greater than monthly precipitation (Figure 5.2-6). Accordingly, the average CCS salinity increased from 35 PSS-78 to 70 PSS-78. Much of this increase occurred by the end of May 2016. During the same 4-month period (February through May) in 2017, the monthly differences between evaporation and precipitation were even more negative than in 2016 (except in March). Whereas salinity increased by 20 PSS-78 between February and May 2016, salinity during the same four months in 2017 has remained relatively stable (increase from 65 PSS-78 to 67 PSS-78). The reason for the stability in salinity in spite of the adverse imbalance between evaporation and precipitation is the addition of UFA water. These additions of low salinity water help to offset the disparity between evaporation and precipitation and, in so doing, help moderate salinity. The continued addition of UFA water, combined with less significant disparities between evaporation and precipitation, should help reduce CCS salinity to 34 PSS-78.

5-11

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 When the UFA water-based approach to CCS salinity abatement was proposed, there were concerns that the associated increase in CCS stage would induce significant seepage of hypersaline water into Biscayne aquifer. Figure 5.2-7 plots the monthly average rates of vertical seepage of salt into the Biscayne aquifer through the base of the CCS (negative values represent outflow from the CCS; positive values represent inflow into the CCS). Inspection of this plot reveals that, relative to other months during the simulated 24-month timeframe, vertical seepage of salt since the full commencement of UFA water additions (November 2016) has been relatively moderate. It is anticipated that the long-term reduction in CCS salinity to 34 PSS-78 will help to moderate the flow of salt from the CCS into the Biscayne aquifer.

5-12

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 TABLES

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 Table 5.2-1. Calibration Parameters.

Calibrated Parameter Name Value Units Vertical Hydraulic Conductivity (Zone A) 1.4 ft/day Vertical Hydraulic Conductivity (Zone B) 0.1 ft/day Vertical Hydraulic Conductivity (Zone C) 0.1 ft/day Vertical Hydraulic Conductivity (Zone D) 2.2 ft/day West Face Hydraulic Conductivity 500 ft/day East Face Hydraulic Conductivity 25 ft/day North Face Hydraulic Conductivity 500 ft/day South Face Hydraulic Conductivity 1600 ft/day Evaporation Modifier (Factor Multiplier) 0.62 Runoff Modifier (as % of Precipitation) 20%

Blowdown Evaporation Factor 30%

Blowdown Concentration (as % of Seawater) 0.50 5-13

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 Table 5.2-2. Calculated Fluid Flows from Water Budget Components from June 2015 through May 2017.

June 2015 to May 2017 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.44 318.79 E. Seepage 0.26 186.70 N. Seepage 0.02 13.54 S. Seepage 6.80 4971.32 Bottom Seepage 2.20 1606.72 Precipitation and Runoff 21.78 15920.48 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.59 428.76 Unit 5 Blowdown 0.18 131.98 ID Pumping 3.90 2852.92 Added Water (e.g. L-31E) 18.12 13247.06 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 54.28 39678.27 W. Seepage 0.00 -0.37 E. Seepage -0.26 -190.50 N. Seepage -0.01 -5.99 S. Seepage -1.22 -891.14 Bottom Seepage -13.41 -9801.13 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -37.47 -27393.69 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -52.37 -38282.82 Modeled Change in CCS Storage: 1.91 1395.46 Observed Change 0.39 288.23 Key:

CCS = Cooling Canal System.

gal = Gallon.

ID = Interceptor Ditch.

MGD = Million gallons per day.

5-14

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 Table 5.2-3. Calculated Mass Flows from Salt Budget Components from June 2015 through May 2017.

June 2015 to May 2017 Mass Budget Component lb/day (x1000) Mass (lb x 1000)

W. Seepage 3.80 2777.73 E. Seepage 68.81 50298.89 N. Seepage 4.09 2993.06 S. Seepage 1348.98 986102.07 Bottom Seepage 670.41 490068.71 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 26.37 19274.82 ID Pumped Water 320.25 234102.33 Added Water (e.g. L-31E) 3796.45 2775204.60 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 6239.15 4560822.20 W. Seepage -40.50 -29603.04 E. Seepage -101.95 -74522.64 N. Seepage -3.46 -2526.71 S. Seepage -447.89 -327409.72 Bottom Seepage -6186.75 -4522513.47 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -6780.54 -4956575.58 Modeled Change in CCS Storage: -541.39 -395753.38 Observed Change -1089.17 -796183.62 Key:

CCS = Cooling Canal System.

ID = Interceptor Ditch.

lb = Pound(s).

5-15

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 Table 5.2-4. Calculated Fluid Flows from Water Budget Components for the Period of Record (June 2016 through May 2017).

June 2016 through May 2017 Water Budget Component Flow (MGD) Volume (gal x 10^6)

W. Seepage 0.43 155.87 E. Seepage 0.34 123.65 N. Seepage 0.03 10.23 S. Seepage 9.13 3332.78 Bottom Seepage 3.21 1172.49 Precipitation and Runoff 16.64 6072.22 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.62 225.86 Unit 5 Blowdown 0.00 0.66 ID Pumping 1.37 499.65 Added Water 14.67 5353.54 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 46.43 16946.96 W. Seepage 0.00 0.00 E. Seepage -0.05 -16.58 N. Seepage 0.00 -0.06 S. Seepage 0.00 0.00 Bottom Seepage -6.28 -2293.51 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation -35.83 -13078.48 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -42.16 -15388.63 Modeled Change in CCS Storage: 4.27 1553.58 Observed Change -0.30 -110.29 Key:

CCS = Cooling Canal System.

gal = Gallon.

ID = Interceptor Ditch.

MGD = Million gallons per day.

5-16

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 Table 5.2-5. Calculated Mass Flows from Mass Budget Components for the Period of Record (June 2016 through May 2017).

June 2016 through May 2017 Mass Budget Component lb/day (x1000) Mass (lb x 10^6)

W. Seepage 5.05 1843.29 E. Seepage 88.42 32271.84 N. Seepage 6.32 2305.82 S. Seepage 1626.51 593674.81 Bottom Seepage 983.54 358990.31 Precipitation and Runoff 0.00 0.00 Into CCS Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.27 96.93 ID Pumping 76.05 27756.70 Added Water 2411.92 880352.15 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total In: 5198.06 1897291.84 W. Seepage 0.00 0.00 E. Seepage -23.45 -8559.83 N. Seepage -0.09 -31.72 S. Seepage 0.00 0.00 Bottom Seepage -3331.30 -1215925.70 Out of CCS Precipitation and Runoff 0.00 0.00 Evaporation 0.00 0.00 Unit 3, 4 Added Water 0.00 0.00 Unit 5 Blowdown 0.00 0.00 ID Pumping 0.00 0.00 Plant Outflow Equal to Intake Plant Intake Equal to Outflow Total Out: -3354.84 -1224517.26 Modeled Change in CCS Storage: 1843.22 672774.59 Observed Change 786.86 287202.42 Key:

CCS = Cooling Canal System.

lb = Pound(s).

ID = Interceptor Ditch.

5-17

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 5.2-6. Interim Salt Mass Removed.

Total Total Millions Daily Salt Cumulative Millions Daily Salt Cumulative of Removal Salt Removed of Removal Salt Removed Gallons (millions (millions of Gallons (millions (millions of Day of Water of lbs.) lbs.) Day of Water of lbs.) lbs.)

09/28/16 6.3 3.0 3 11/05/16 14.8 6.7 274 09/29/16 15.3 7.4 10 11/06/16 14.8 6.6 281 09/30/16 14.9 7.2 18 11/07/16 14.8 6.6 288 10/01/16 14.9 7.2 25 11/01/16 14.8 6.6 294 10/02/16 14.9 7.1 32 11/02/16 14.8 6.7 301 10/03/16 14.9 6.9 39 11/03/16 14.8 6.7 307 10/04/16 14.8 6.9 46 11/04/16 14.4 6.5 314 10/05/16 14.9 8.8 54 11/05/16 14.8 6.7 321 10/06/16 7.7 12.7 67 11/06/16 14.8 6.6 327 10/07/16 0.0 0.0 67 11/07/16 14.8 6.6 334 10/08/16 7.7 20.2 87 11/08/16 14.8 6.6 341 10/09/16 14.9 6.8 94 11/09/16 14.8 6.6 347 10/10/16 14.9 6.8 101 11/10/16 14.8 6.6 354 10/11/16 14.9 6.7 108 11/11/16 14.8 6.6 360 10/12/16 14.9 6.8 114 11/12/16 14.8 6.6 367 10/13/16 14.9 6.8 121 11/13/16 14.8 6.6 374 10/14/16 14.9 6.7 128 11/14/16 14.8 6.6 380 10/15/16 14.9 6.7 135 11/15/16 14.8 6.6 387 10/16/16 14.9 6.7 141 11/16/16 14.8 6.6 394 10/17/16 14.9 6.7 148 11/17/16 14.8 6.6 400 10/18/16 14.8 6.7 155 11/18/16 14.8 6.6 407 10/19/16 14.8 6.7 162 11/19/16 14.8 6.6 413 10/20/16 14.8 6.6 168 11/20/16 14.8 6.6 420 10/21/16 14.8 6.6 175 11/21/16 14.8 6.6 427 10/22/16 14.8 6.6 181 11/22/16 14.8 6.7 433 10/23/16 14.8 6.7 188 11/23/16 14.8 6.7 440 10/24/16 14.8 6.6 195 11/24/16 14.8 6.7 447 10/25/16 14.8 6.6 201 11/25/16 14.8 6.6 453 10/26/16 14.8 6.6 208 11/26/16 14.8 6.6 460 10/27/16 14.8 6.6 215 11/27/16 14.8 6.6 467 10/28/16 14.8 6.6 221 11/28/16 14.8 6.6 473 10/29/16 14.8 6.6 228 11/29/16 14.2 6.4 480 10/30/16 14.8 6.6 234 11/30/16 14.8 6.6 486 10/31/16 14.8 6.6 241 12/01/16 14.8 6.6 493 11/01/16 14.8 6.6 248 12/02/16 14.8 6.6 500 11/02/16 14.8 6.7 254 12/03/16 14.8 6.6 506 11/03/16 14.8 6.7 261 12/04/16 14.8 6.6 513 11/04/16 14.4 6.5 268 12/05/16 14.8 6.6 519 5-18

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 5.2-6. Interim Salt Mass Removed.

Total Total Millions Daily Salt Cumulative Millions Daily Salt Cumulative of Removal Salt Removed of Removal Salt Removed Gallons (millions (millions of Gallons (millions (millions of Day of Water of lbs.) lbs.) Day of Water of lbs.) lbs.)

12/06/16 14.8 6.6 526 01/13/17 14.8 6.7 774 12/07/16 14.8 6.6 533 01/14/17 14.8 6.7 781 12/08/16 14.8 6.6 539 01/15/17 14.8 6.8 787 12/09/16 14.8 6.6 546 01/16/17 14.8 6.8 794 12/10/16 14.8 6.6 553 01/17/17 14.8 6.8 801 12/11/16 14.8 6.6 559 01/18/17 14.8 6.8 808 12/12/16 14.8 6.6 566 01/19/17 15.0 6.8 814 12/13/16 14.8 6.3 572 01/20/17 14.8 6.6 821 12/14/16 14.8 6.5 579 01/21/17 14.8 6.7 828 12/15/16 13.2 5.8 584 01/22/17 14.8 6.7 834 12/16/16 13.7 6.0 591 01/23/17 7.8 3.5 838 12/17/16 14.8 6.5 597 01/24/17 14.8 6.7 845 12/18/16 14.8 6.5 604 01/25/17 14.8 6.7 851 12/19/16 14.8 6.6 610 01/26/17 14.7 6.6 858 12/20/16 14.8 6.6 617 01/27/17 14.7 6.7 865 12/21/16 14.8 6.6 623 01/28/17 14.8 6.7 871 12/22/16 14.8 6.6 630 01/29/17 14.8 6.7 878 12/23/16 14.8 6.6 636 01/30/17 13.0 5.9 884 12/24/16 14.8 6.6 643 01/31/17 14.8 6.7 891 12/25/16 14.8 6.6 650 02/01/17 14.7 6.7 897 12/26/16 14.8 6.6 656 02/02/17 14.8 6.6 904 12/27/16 14.8 6.6 663 02/03/17 14.7 6.6 910 12/28/16 14.8 6.6 670 02/04/17 14.8 6.6 917 12/29/16 14.8 6.6 676 02/05/17 14.8 6.6 924 12/30/16 14.8 6.6 683 02/06/17 14.7 6.6 930 12/31/16 14.8 6.6 689 02/07/17 14.7 6.6 937 01/01/17 14.8 6.6 696 02/08/17 14.8 6.7 944 01/02/17 14.8 6.6 703 02/09/17 14.7 6.6 950 01/03/17 14.8 6.6 709 02/10/17 14.8 6.7 957 01/04/17 14.8 6.5 716 02/11/17 14.7 6.6 964 01/05/17 14.8 6.5 722 02/12/17 14.7 6.6 970 01/06/17 14.8 6.6 729 02/13/17 14.7 6.6 977 01/07/17 14.8 6.6 736 02/14/17 14.7 6.5 983 01/08/17 14.8 6.6 742 02/15/17 14.7 6.6 990 01/09/17 14.8 6.6 749 02/16/17 14.7 6.6 997 01/10/17 11.2 5.0 754 02/17/17 14.7 6.7 1,003 01/11/17 14.7 6.7 761 02/18/17 14.7 6.7 1,010 01/12/17 14.5 6.6 767 02/19/17 14.7 6.7 1,017 5-19

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 5.2-6. Interim Salt Mass Removed.

Total Total Millions Daily Salt Cumulative Millions Daily Salt Cumulative of Removal Salt Removed of Removal Salt Removed Gallons (millions (millions of Gallons (millions (millions of Day of Water of lbs.) lbs.) Day of Water of lbs.) lbs.)

02/20/17 14.7 6.7 1,023 03/30/17 14.6 6.6 1,276 02/21/17 14.7 6.7 1,030 03/31/17 14.6 6.6 1,283 02/22/17 14.7 6.7 1,037 04/01/17 14.6 6.6 1,290 02/23/17 14.7 6.6 1,043 04/02/17 14.6 6.6 1,296 02/24/17 14.7 6.7 1,050 04/03/17 14.8 6.6 1,303 02/25/17 14.7 6.7 1,057 04/04/17 14.2 6.4 1,309 02/26/17 14.7 6.7 1,063 04/05/17 14.7 6.6 1,316 02/27/17 14.7 6.7 1,070 04/06/17 14.2 6.0 1,322 02/28/17 14.7 6.7 1,077 04/07/17 14.8 6.6 1,329 03/01/17 14.7 6.7 1,083 04/08/17 14.8 6.7 1,335 03/02/17 14.7 6.7 1,090 04/09/17 14.3 6.5 1,342 03/03/17 14.7 6.7 1,097 04/10/17 14.8 6.7 1,348 03/04/17 14.7 6.7 1,104 04/11/17 14.8 6.6 1,355 03/05/17 14.7 6.7 1,110 04/12/17 14.8 6.6 1,362 03/06/17 14.7 6.7 1,117 04/13/17 14.8 6.6 1,368 03/07/17 14.7 6.7 1,124 04/14/17 14.8 6.6 1,375 03/08/17 14.7 6.7 1,130 04/15/17 14.8 6.6 1,382 03/09/17 14.7 6.7 1,137 04/16/17 14.8 6.7 1,388 03/10/17 14.7 6.7 1,144 04/17/17 14.8 6.7 1,395 03/11/17 14.7 6.6 1,150 04/18/17 14.8 6.7 1,402 03/12/17 14.1 6.4 1,157 04/19/17 14.8 6.7 1,408 03/13/17 14.7 6.7 1,163 04/20/17 14.8 6.7 1,415 03/14/17 14.7 6.6 1,170 04/21/17 14.8 6.7 1,422 03/15/17 14.7 6.7 1,177 04/22/17 14.8 6.6 1,428 03/16/17 14.7 6.7 1,183 04/23/17 12.9 5.8 1,434 03/17/17 14.7 6.7 1,190 04/24/17 12.9 6.6 1,441 03/18/17 14.7 6.7 1,197 04/25/17 14.8 6.6 1,447 03/19/17 14.7 6.6 1,203 04/26/17 14.8 6.6 1,454 03/20/17 14.7 6.7 1,210 04/27/17 14.8 6.6 1,461 03/21/17 14.7 6.7 1,217 04/28/17 14.8 6.6 1,467 03/22/17 14.7 6.6 1,223 04/29/17 14.8 6.6 1,474 03/23/17 14.7 6.7 1,230 04/30/17 14.8 6.6 1,480 03/24/17 14.7 6.7 1,237 05/01/17 14.8 6.6 1,487 03/25/17 14.7 6.7 1,243 05/02/17 14.8 6.6 1,494 03/26/17 14.7 6.7 1,250 05/03/17 14.8 6.6 1,500 03/27/17 14.7 6.6 1,256 05/04/17 14.8 3.9 1,504 03/28/17 14.7 6.6 1,263 05/05/17 14.8 6.6 1,511 03/29/17 14.7 6.6 1,270 05/06/17 14.8 6.6 1,517 5-20

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 5.2-6. Interim Salt Mass Removed.

Total Total Millions Daily Salt Cumulative Millions Daily Salt Cumulative of Removal Salt Removed of Removal Salt Removed Gallons (millions (millions of Gallons (millions (millions of Day of Water of lbs.) lbs.) Day of Water of lbs.) lbs.)

05/07/17 14.8 6.6 1,524 05/20/17 14.8 6.5 1,609 05/08/17 14.8 6.6 1,530 05/21/17 14.8 6.5 1,616 05/09/17 14.8 6.5 1,537 05/22/17 14.8 2.1 1,618 05/10/17 14.8 6.6 1,543 05/23/17 6.1 0.0 1,618 05/11/17 14.8 6.6 1,550 05/24/17 7.3 0.0 1,618 05/12/17 14.8 6.6 1,557 05/25/17 0.1 4.2 1,622 05/13/17 14.8 6.6 1,563 05/26/17 9.6 6.5 1,628 05/14/17 14.8 6.6 1,570 05/27/17 14.7 6.5 1,635 05/15/17 14.8 6.6 1,576 05/28/17 14.8 6.5 1,641 05/16/17 14.8 6.6 1,583 05/29/17 14.7 6.5 1,648 05/17/17 14.8 6.5 1,589 05/30/17 14.7 6.5 1,655 05/18/17 14.8 6.6 1,596 05/31/17 14.7 6.5 1,661 05/19/17 14.8 6.5 1,602 5-21

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 (A)

(B)

Figure 5.2-1. Flow into (A) and out of (B) the CCS, Shown in Cross-Section.

5-31

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 60 40 Average Water Flow (MGD) 20 0

Jun-15 Jul-15 Aug-15 Sep-15 Oct-15 Nov-15 Dec-15 Jan-16 Feb-16 Mar-16 Apr-16 May-16 Jun-16 Jul-16 Aug-16 Sep-16 Oct-16 Nov-16 Dec-16 Jan-17 Feb-17 Mar-17 Apr-17 May-17

-20

-40

-60 Observed Simulated Figure 5.2-2. Modeled versus Measured Net Monthly Flows of Water for the CCS during the Period from June 2015 - May 2017.

5-32

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 25000 20000 Average Salt Flow (lb x 1000/day) 15000 10000 5000 0 Jun-15 Jul-15 Aug-15 Sep-15 Oct-15 Nov-15 Dec-15

-5000 Jan-16 Feb-16 Mar-16 Apr-16 May-16 Jun-16 Jul-16 Aug-16 Sep-16 Oct-16 Nov-16 Dec-16 Jan-17 Feb-17

-10000 Mar-17 Apr-17 May-17

-15000

-20000

-25000 Observed Simulated Figure 5.2-3. Modeled versus Measured Net Monthly Flows of Salt Mass for the CCS during the Period from June 2015 - May 2017.

5-33

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 3

Simulated Water Elevations 2.5 Measured Water Elevations 2

CCS Water Elevation (ft NAVD 88) 1.5 1

0.5 0

-0.5

-1

-1.5

-2 Figure 5.2-4. Modeled versus Measured Water Elevations (NAVD 88) in the CCS during the Reporting Period; Used to Validate the Conceptual Model and Calibrate the Water Balance Model to Temporal Trends in Water Elevation.

5-34

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 120 Simulated Concentration (g/L)

Measured Concentration (g/L) 100 80 CCS Salinity (g/L) 60 40 20 0

Figure 5.2-5. Modeled versus Measured Salinity in the CCS during the Reporting Period; Used to Validate the Conceptual Model and Calibrate the Water Balance Model to Temporal Trends in Salinity.

5-35

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 60 2015 2016 40 2017 Precipitation Minus Evaporation (MGD) 20 0

-20

-40

-60 Figure 5.2-6. Modeled Monthly Differences between Precipitation and Evaporation (precipitation minus evaporation) for the 24-month Simulation.

5-36

FPL Turkey Point Annual Monitoring Report September 2017 Section 5 5000 0

Vertical Salt Mass Flow (lb x 1000/day)

-5000

-10000

-15000 2015 2016 2017

-20000 Figure 5.2-7. Modeled Monthly Vertical Salt Mass Seepage between the CCS and Biscayne Aquifer; Negative Values Indicate Seepage of Salt Mass out of the CCS.

5-37