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Site Assessment Rept,Unit 2 Radwaste Effluent Line. Page 2 of 2 in Visual Classification of Sails - Boring ESS3B Section of Incoming Submittal Not Included
	ML20212H610
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Site:	Brunswick
Issue date:	09/13/1995
From:	Halperin A, Onstott J; NORTH CAROLINA, STATE OF
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{{#Wiki_filter:! i ) SITE ASSESSMENT REPORT i UNIT 2 RADWASTE EFFLUENT LINE BRUNSWICK NUCLEAR PLANT ) BRUNSWICK COUNTY, NORTH CAROLINA l J f r e*

i TABLE OF CONTENTS PAGE ' LIST O F TAB LES/ FIG URES..................................................................... ii

1.0 INTRODUCTION

AND ASSESSMENT

SUMMARY

1 1.1 SOURCE AND CAUSE OF CONTAMIN ATION..................................... 2 1.2 IMMINENT HAZARDS TO PUBLIC HEALTil AND SAFETY; MITIGATING ACTIONS............................................................................2 1.3 RECEPTORS AND EX POSURE PATHWAYS....................................... 2 1.4 HORIZONTAL AND VERTICAL EXTENT OF SOIL AND GROUNDWATER CONTAMINATION; SIGNIFICANT FACTORS AFFECTING CONTAMINANT T RA N S PO RT........................................................................ 3 1.5 GEOLOGICAL AND HYDROGEOLOGICAL FEATURES INFLUENCING THE MOVEMENT, CHEMICAL AND PilYSICAL CHARACTER OF CONTAMINANTS 3 1.6 REPO RT FO RM AT................................................................. 4 2.0 PH ASE I FIELD EXPLORATION..................................................... 5 2.1 YORKTOWN SILT PIEZOMETER INSTALLATION................................ 5 2.2 YORKTOWN SAND PIEZOMETER (MONITORING WELL) INSTALLATION... 6 2.3 EVALUATION OF PHASE I WATER LEVEL DATA............................ 6 3.0 PH AS E II FIELD EXPLORATIO N.................................................... 9 4.0 PH AS E III FIELD EXPLORATION................................................ 11 5.0 PI E ZO M ETRI C D ATA................................................................. 12 5.1 B A C K G R O U N D..................................................................... 12 5.2 S H ALLOW S U RFICI AL SOILS.................................................... 12 5.3 YORKTOWN S AN D................................................................ 14 6.0 GROUND WATER SAMPLING AND ANALYSIS...........................15 6.1 S AMPLING OF MONITORING WELLS........................................... 15 6.1.1 Ph a s e II................................................................... 1 5 6.1. 2 Phase 1I1................................................................. 15 6.2 Laboratory Analys is............................................................ 16 j 6.2.1 Samples From Phase I and II Monitoring Wells..................16 6.2.2 Samples From Phase III Monitoring Wells........................16 7.0 C LOSIN G REM ARKS................................................................... 18 TABLES FIGURES APPENDIX A - BORING LOGS APPENDIX B - LABORATORY ANALYTICAL REPORTS APPENDIX C - REFERENCE PLANS AND CROSS SECTIONS OF PLANT BACKFILL AREA 6-s

ii LIST OF TABLES TABLE NO. TITLE 1 Piezometer Installation Details 2 Monitoring Well Installation Details 3 Ground Water Elevations 4 Radionuclide Analyses Results LIST OF FIGURES FIGURE NO. TITLE 1 Yorktown Silt (Shallow) Ground Water Elevations i 2 Yorktown Sand (Deep) Ground Water Elevations 3 Yorktown Sitt (Shallow) Monitoring Wells 4 Yorktown Sand (Deep) Monitoring Wells 5 Typical Piezometer Installation 6 Typical Monitoring Well Installation O 4

i SITE ASSESSMENT REPORT 948001/03 UNIT 2 RADWASTE EFFLUENT LINE BRUNSWICK NUCLEAR PLANT SOUTHPORT, NORTH CAROLINA

1.0 INTRODUCTION

AND ASSESSMENT

SUMMARY

This report presents the results of a ground water study at the Brunswick Nuclear Plant site which was performed in accordance with the January 9,1995 Site Assessment Plan j submitted to the North Carolina Division of Environmental Management (NCDEM) by ] Carolina Power & Light Company (CP&L). ) The layout of the plant facilities and infrastructure along with piezometers and monitoring wells installed as part of this study are shown on Figures 1 through 3. Two geologic units have been identified that could have been affected by a release from the Unit 2 Radwaste Effluent line -- the shallow surficial soils (Yorktown silt and plant backfill) and the underlying sand (Yorktown sand). Ground water contours in these two geologic units are presented on Figures 4 and 5, respectively. Based upon the assessment of the plant site described herein, there are no imminent health hazards indicated as a result of the release from the Unit 2 Radwaste Effluent Line. The only mobile radionuclide released from the pipeline is tritium, which, based on the assessment, is confined to the plant site. The Site Assessment Plan transmitted to NCDEM addressed five specific issues, as follows: 1. Source and Cause of Contamination. 2. Imminent Hazards to Public Health and Safety; Mitigating Actions. 3. Receptors and Exposure Pathways. 4. Horizontal and Vertical Extent of Soil and Groundwater Contamination; Significant Factors Affecting Contaminant Transport.

2 Geological and Hydrogeological Features Innuencing the Movement, Chemical and Physical Character of Contaminants. 1.1 SOURCE AND CAUSE OF CONTAMINATION As~ discussed in the Site Assessment Plan, CP&L has assumed that the Unit 2 Radwaste Effluent Line was a potential source of tritium leakage. The line was promptly repaired and held pressure during a subsequent test. Tritium is considered to be the indicator parameter for ground water analyses because tritium was determined to be the only radionuclide present in the Unit 2 Radwaste Effluent Line with significant mobility. This has been confirmed by tests of water from Monitoring Well ESS-2C, which has the highest level of tritium found during this study, but has no concentrations of gamma-emitting radionuclides that exceed the Lower Limit of - Detection (LLD). 1.2 IMMINENT HAZARDS TO PUBLic HEALTH AND SAFETY; MmGATING ACTIONS Movement of tritium has been from the point of leakage to the plant backfill. The tritium will most likely move with the ground water from the plant backfill to the Intake Canal, and does not pose an imminent hazard to human health or the environment. ps There also is a possibility that some of the tritium could reach the underlying Yorktown sand, although monitoring well data indicate that this has not occurred at detectable l concentrations. Based on the findings of this study, tritium that reaches the Yorktown sand would be carried in a generally easterly direction toward Monitoring Wells ESS-3B and ESS-13B and the Cape Fear River. There are no potential receptors withdrawing water for potable usage for a minimum distance of 3,000 feet from the plant (Site Exclusion Boundary). j i The possibility of downward movement from the Yorktown sand was considered. However, piezometric heads in the underlying formation near the plant are several feet . higher than piezometric heads in the Yorktown sand, and consequently downward g migration to this formation is considered very unlikely. Thus, there is no imminent 3 hazard to public health and safety related to movement of tritium in the ground water in i the vicinity of the plant. ,v _ i ',,y s

3 1.3 RECEMORS AND EXPOSURE PATHWAYS No off site receptors have been identified that are likely to be affected. The primary potential exposure pathway is the Intake Canal. The Intake Canal carries water that is pumped through the plant for cooling purposes and then, in accordance with the plant's NPDES permit, is released to the Discharge Canal and eventually the ocean. There is no possibility of potable usage along this pathway. It also should be pointed out that ground water entering the Intake Canal mixes with an extremely large volume of water flowmg in the canal. This would reduce tritium concentrations to well below drinking water standards, even though the canal water is not potable. l A second potential exposure pathway is from the point of release to the plant backfill and then into the underlying Yorktown sand. The prevailing gradients in the Yorktown l sand as determined from the literature and data from the current study are in an easterly direction and are very gradual. Tritium has not been detected in monitoring wells located in the Yorktown sand downgradient from the source area. 1.4 HORIZONTAL AND VERTICAL EXTENT OF SOIL AND GROUNDWATER CONTAMINATION; SIGNIFICANT FACTORS AFFECTING CONTAMINANT L TRANSPORT Tritium was detected in two monitoring wells completed in the backfill at the plant site. The wells were ESS-2C and ESS-16, which are located to the east side of the point where the Discharge Cooling Water Tunnels (Discharge Tunnels) pass under the plant ) security fence. All other monitoring wells in the shallow surficial materials and the Yorktown sand were negative for tritium. Thus, the detected tritium contamination is confined to portions of the plant backfill. The ground water contours shown on Figure 4 indicate that the ground water within the plant backfill will ultimately move toward the Intake Canal, as there is a positive gradient from the surrounding natural soil to the plant backfill and from the plant backfill to the Intake Canal. While vertical migration from the plant backfill to the Yorktown sand is possible based on the observed gradients, no tritium was detected in down-gradient monitoring wells in the Yorktown sand. If tritium were to reach this formation, it would be carried eastward, as indicated by the contours shown on Figure 5. 1.5 GEOLOGICAL AND HYDROGEOLOGICAL FEATURES INFLUENCING THE MOVEMENT, CHEMICAL AND PHYSICAL CHARACTER OF CONTAMINANTS As discussed above, there are two geological units that could be potentially affected by the release of tritium at the plant site. The units have signincantly differing hydro- \\

F 1 4 geological characteristics. The shallow surficial soils have a water table that tends to j follow surface contours and flow is normally toward surface drainage features such as rivers and streams. At the plant site, this physiography has been substantially altered by the construction of the plant itself, The soft, silty soils beneath plant were removed and replaced with compacted granular backfill. This backfill, as indicated by Figure 2, extends to the present location of the Intake Canal. Thus, the hydrogeology of the shallow surficial soils near the plant has been substantially altered. The result is that the plant backfill now serves as a drain for ground water in the surficial soils surrounding the plant. Shallow ground water flow in the vicinity of the plant is from the natural soils to the backfill and from the backfill to the Intake Canal, as evidenced by the contours of piezometric head shown on Figure 4. Therefore, tritium detected in the backfill is constrained ultimately to move toward the Intake Canal. Site measurements of piezometric head in the Yorktown sand and data from the ~ literature indicate that flow in this geological unit is in an easterly direction with very gradual gradients. There are no known potential receptors in this direction that use j potable water from this geologic unit. 1.6 REPORT FORMAT SecIion 2.0 provides a discussion of the first part (Phase I) of the field exploration and the interpretation of the ground water flow regime in the surficial materials (Yorktown silt and plant backfill) and deeper sand (Yorktown sand). Section 3.0 provides a discussion of the second part (Phase II) of the field exploration and subsequent interpretation of data obtained. The third field exploration phase (Phase III) and resulting data are presented in Section 4.0. A discussion of piezometric data and ground water flow is provided in Section 5.0. The sampling of monitoring wells and laboratory analysis of water samples is discussed in Section 6.0, and the study is summarized in Section 7.0. l l l l i j

7-5 2.0 PHASE I FIELD EXPLORATION In the Site Assessment Plan prepared by CP&L and submitted to NCDEM, the installation of 16 piezometers generally surrounding the plant (three in the Yorktown - sand and 13 in the shallow surficial materials generally referred to as the Yorktown silt) was proposed. The plan locations were chosen so as to provide baseline data for determining ground water flow gradients in these two geologic units in the vicinity of the plant. 2.1 - YORKTOWN SILT PIEZOMETER INSTALLATION Piezometers were installed in accordance with 15A NCAC 2C.0108 in the shallow surficial soils on February 6,7 and 8,1995 at the locations indicated on Figure 1 of this report. Twelve piezometers were installed -- one less than the planned 13. Access to the area where the Piezometer ESS-7 was to be constructed was determined to be extremely difficult, and no piezometer was installed at this location. Installation of the piezameters and subsequent monitoring wells was performed by Richard Catlin & Associates personnel with field observation by a D'Appolonia geologist. A CP&L geologist also was present during this and all subsequent phases of the field exploration and ground water sampling. Drilling equipment used at the site was steam cleaned prior to use for this and all sub-sequent phases of site work. Equipment also was cleaned and decontaminated between drilling locations once the drillers were on site. Boreholes for the Yorktown silt piez-ometers were advanced using 31/2-inch diameter hand augers. At locations where surficial materials consisted of gravel or cobble fill, post-hole diggers were employed to advance to a depth of 2 or 3 feet. Borings were advanced to several feet below the water table until the soil was too wet to be recovered by the hand augers. Boring logs for all boreholes drilled for piezometer and monitoring well installation are provided in Appendix A. The piezometers in the surficial soils were constructed of 1 1/4-inch inside diameter (I.D.),5-foot long, stainless-steel well screens with a galvanized steel riser pipe. The piezometers were fitted with drive points and driven using a sledge hammer as much as 4.2 feet past the lowe'st sampled depth. A bentonite seal with a minimum thickness of 1 foot was placed above the top of the screen, and the boreholes were backfilled with materials brought up during the drilling. Two-inch diameter PVC casings with locking 9

m 6 caps were grouted into place at the surface to provide protection and to limit access. A typical piezometer installation is shown on Figure 6, and construction parameters and reference elevations for the piezometers are provided in Table 1. 2.2 YORKTOWN SAND PIEZOMETER (MONITORING WELL) INSTALLATION The three piezometers proposed for the Yorktown sand were installed in accordance with 15A NCAC 2C.0108 to also serve as monitoring wells. These monitoring wells were installed during the period from February 13 to 16,1995. Hand augers were used to advance the boreholes for the 6 to 9 feet immediately beneath the surface so as to avoid damaging any subsurface utilities or structures, following which the borings were continued with 41/4-inch I.D., hollow-stem augers. The boreholes were advanced without sampling to the depth of the adjacent shallow piezometers (which had been continuously sampled and logged). Below that depth the boreholes were sampled at 5-foot intervals with a split-barrel sampler. The boreholes were terminated within the Yorktown sand at a point indicated by the presence of relatively coarse, clean sands with substantially increased Standard Penetration Test (SPT) blow' counts lying below a layer (s) of clayey, fine-grained soils. The monitoring wells were constructed of 2-inch I.D., flush-joint PVC riser pipe and screen. Screen sections were No. 10 (0.010-inch) slot and 5 feet in length. The materials for well construction arrived at the site in protective plastic wrap to prevent contamination prior to installation. Filter sand was placed around the well screen to a minimum height of I ft,t above the top of the screen. A bentonite seal with a minimum thickness of I foot was placed above the filter sand, and the annulus above the seal was grouted to near the surface with non-shrink bentonite cement. A locking steel protective casing and a concrete pad were installed at the ground surface. A typical monitoring well installation is shown on Figure 7, and monitoring well construction parameters are provided in Table 2. The monitoring wells were developed by bailing (with dedicated bailers and lines) or, as in the case of Monitoring Well ESS-2B, pumping. In general, water removed from the wells was observed for clarity, pH, specific conductance, and temperature. Wells were developed until the water emoved was relatively clear and the observed parameters stabilized.

m-7 2.3 EVALUATION OF PHASE I WATER LEVEL DATA Water level readings were obtained from the piezometers and monitoring wells during the field exploration. The ground water surface elevations in the surficial materials were much as anticipated prior to the study, with lows in the vicinity of the Intake Canal and Discharge Tunnels. In the Yorktown sand, Monitoring Well ESS-2 exhibited the highest elevation with slightly lower levels in Wells ESS-1 and ESS-3. This indicates ground water flow to the east, as indicated by regional gradients which show an eastward trend toward the ocean. l The ground water data were evaluated with the purpose of determining the adequacy of existing monitoring wells and, as determined to be necessary, for selecting locations of additional monitoring wells. For the shallow surficial materials, the apparent flow pathways were toward the Intake Canal and Discharge Tunnels.. Therefore, monitoring wells in the shallow soils in the vicinity of Piezometers ESS-2 and ESS-13 were recommended by D'Appolonia. These locations were on the apparent flow pathways. For the Yorktown sand, the predominant flow direction is generally in a quadrant between southeast and northeast. Monitoring Wells ESS-1B and ESS-3B are located in this quadrant and were recommended by D'Appolonia for sampling. An additional - monitoring well approximately midway between these two wells (near ESS-13) was recommended by D'Appolonia. It also was recommended by D'Appolonia that existing Monitoring Well ESS-2B be sampled. The rationale for obtaining this sample was that, if tritium were moving toward the Discharge Canal in the plant backfill, there also would be potential for downward flow from the plant backfill to the Yorktown sand. Thus, three new monitoring wells were recommended for construction by D'Appolonia: Shallow monitoring well near Piezometer ESS-2 (ESS-2C), within the backfill on the plant side of the Cooling Water Discharge Tunnels; Shallow monitoring well near Piezometer ESS-13 (ESS-e 13C); and Yorktown sand monitoring well near Piezometer ESS-13 (ESS-13B). t

8 4,;. D'Appolonia recommended that the three monitoring wells (ESS-1B, ESS-2B and ESS- - 3B) installed in February 1995 and the three new monitoring wells indicated above be sampled for tritium. These recommendations were documented in a March 10,1995 letter from D'Appolonia to CP&L. CP&L subsequently notified NCDEM that the recorrmendations would be implemented. l 1 l i l 4

I ) 9 ) 3.0 PHASE II FIELD EXPLORATION As discussed in Section 2.0, three additional monitoring wells were recommended on 1 the basis of ground water data obtained from the piezometers installed as part of the Site Assessment Plan submitted to the NCDEM. The monitoring wells were installed in accordance with 15A NCAC 2C.0108 during the period of April 3 to 5,1995. I Shallow Monitoring Wells ESS-13C and ESS-2C were constructed on April 3,1995. Monitoring Well ESS-2C was located adjacent to the Cooling Water Discharge Tunnels on the side nearest to the plant (plant east side). Monitoring Well ESS-13C was located near Piezameter ESS-13(A), which had been installed in February 1995. The plan locations of these monitoring wells are indicated on Figure 2. j Construction of Monitoring Well ESS-13B was initiated on April 4,1995 and was completed the following day. The plan location of this monitoring well is shown on Figure 3. ) The Phase II monitoring wells were constructed and developed in a similar manner to those constructed in Phase I. General construction details were similar to those described in Section 2.3, and construction parameters are presented in Table 2. l The three Phase I and three Phase II monitoring wells were sampled on April 4 and 5, 1995. Details of well sampling and sample analysis are provided in Section 6.0. One sample tested positive for tritium. This sample came from shallow Monitoring Well ESS-2C, which is located just east of the Discharge Tunnels near the security fence and is screened in the plant backfill. Mr. Rick Shiver of NCDEM-Wilmington was advised of the test results on April 10 and April 13,1995 by Mr. Richard Lopriore of CP&L. The finding of tritium in Monitoring Well ESS-2C suggested the possibility that tritium could be moving along the Discharge Tunnels toward the Discharge Canal in the backfill placed around the tunnels. In order to better define this situation, seven additional monitoring wells were proposed in order to determine if, and to what extent, tritium had moved toward the Discharge Canal. The following additional monitoring wells were installed in the surficial soils (Figure 2): 1. Near Piezometer ESS-2A on the west side of the Discharge Tunnels (ESS-2D);

10 2. Near Piezometer ESS-3 on the north side of the plant (ESS-3C); 3. Near Piezometer ESS-5 at the south end (east side) of the Discharge Tunnels (ESS-5C); i 4. Near Piezometer ESS-12 on the north side of the plant (ESS-12C); 5. In front of the Administration Building (ESS-16); 6. Just east of the Discharge Tunnels on the same perpendicular transect across the tunnels as Piezometer ESS-5 (ESS-14); and 7. West of the Discharge Tunnels on the same perpendicular transect as Piezometer ESS-5 (ESS-15). Note that, in the above list, north refers to " plant north" which is actually northeast. j i j l } 6

1 11 l 4.0 PHASE III FIELD EXPLORATION Seven shallow monitoring wells (ESS-2D, ESS-3C, ESS-5C, ESS-12C, ESS-14. ESS-15, and ESS-16) were installed in accordance with 15A NCAC 2C.0108 between April 25 and 27,1995. The boreholes were advanced and sampled and the monitoring wells were installed using the same methodology previously discussed in Section 2.0. Well construction parameters are provided in Table 2. The seven new monitoring wells in the shallow surficial soils were sampled on April 27,1995. The sampling and analysis protocols were identical to those employed for the previous sampling and laboratory analysis performed in Phase II. One of the samples obtained from the seven monitoring wells exhibited the presence of tritium. The sample from Monitoring Well ESS-16 (located in the plant backfill near Well ESS-2C) had a concentration of 34,400 pCill of tritium. The remaining samples tested negative for tritium. The complete results of the sampling and laboratory analysis are discussed in Section 6.0. The new monitoring wells also provided additional ground water level measurements in the shallow surficial soils, which in turn permitted refinement of the ground water contours in the vicinity of the Discharge Tunnels, as shown on Figure 4. Based on the additional information, it was determined that the ground water in the Yorktown silt surrounding the plant drains to the plant backfill and the backfill drains to the Intake Canal. A more complete discussion of ground water conditions is provided in Section 5.0 which follows. b

12 l 5.0 PIEZOMETRIC DATA

5.1 BACKGROUND

During the construction of the Brunswick Nuclear Plant, the primarily silty surficial materials at the plant site were identified as the upper part of the Yorktown Formation (Yorktown silt) and the underlying coarser and cleaner (less silty) sands as the lower part of the Yorktown Formation (Yorktown sand). Some drawings showing the plan and cross sections of the site excavation are provided in Appendix C. The surficial materials consist of interbedded and interlaminated fine sands and glauconitic silts with some clay and shells. These deposits extend to a depth of approxhnately 45 to 50 feet below the ground surface, with finer-grained beds occurring more commonly at shallower depths. Individual stratigraphic layers within the Yorktown silt are not laterally continuous across the site due to excavation for deep structural foundations. Naturally occurring depositional or erosional discontinuities may also exist in the Yorktown silt. As part of the plant construction, the soft silty materials that comprise the Yorktown silt were removed and replaced by compacted granular backfill in order to provide suitable foundation material for plant stmetures. The extent of the primary backfill in relation to current plant structures is shown on Figure 2. As can be seen from the figure, the backfill surrounds most of the plant structures and extends to the Intake Canal. The underlying Yorktown sand is, based on this and earlier studies, laterally continuous beneath the site. 5.2 SHALLOW SURFICIAL SOILS Twelve piezometers and nine monitoring wells were installed in the shallow surficial soils (Yorktown silt and plant backfill) at the site during the three phases of field exploration. The piezometers were located in natural soil (Yorktown silt) or plant backfill depending on their plan location. The plan locations of piezometers and shallow monitoring wells installed as part of the Site Assessment are shown on Figure 2; also shown are two site monitoring wells (MW-I and MW-2) that predate the current study. The approximate limits of the plant backfill are also shown on Figure 2. As can be seen from Figure 2, the backfill extends over a wide area and is shown to f intersect the Intake Canal. The horizontally-bedded clays and silty clays in the Yorktown silt cause it to be anisotropic, such that the permeability in the vertical direction is much lower than in

13 ' tw horizontal. The fine-grained deposits in the Yorktown silt support a relatively high water table, and a large downward gradient is exhibited between piezometric heads in t l the Yorktown silt and those in the underlying Yorktown sand. Within the area of the former excavation for the plant, however, relatively isotropic sandy backfill overlies the sloping sides and bottom of the excavation, as shown on the cross-section drawings presented in Appendix C. As shown on the cross sections, predominantly silty strata underlie the slopes of the former excavation, and the Yorktown sand is present beneath the excavation base. Although the plant backfill was compacted in horizontal lifts, it is apparently much more permeable than the silts, and much lower piezemetric heads are observed within the backfill than in the adjacent silts. Consequently, a relatively weak downward gradient apparently exists between the backfill and the underlying Yorktown sand. The following wells were screened within the plant backfill: ESS-2C, and e ESS-16. Both of these wells had low-level tritium concentrations. Monitoring Well ESS-2D, which is located near these two wells, did not indicate tritium. This well is located near the backfill limits and on the far (plant west) side of the Discharge Tunnels. The water level in Well ESS-2D on April 27,1995 was 9.6 feet, which indicates that the well is significantly upgradient from the plant backfill. The well is on the very edge of the backfill and the screened zone is within the Yorktown sitt. Given the relative proximity of Well ESS-2D to Well ESS-2C where tritium was found, the absence of tritium in Well ESS-2D is a strong indication that tritium is confined to the backfill and will not move upgradient into the Yorktown silt. Contours of piezometric head for the shallow surficial soils are based on data from all piezometers and monitoring wells installed during the current study, as shown on Figure 4. Ground water elevations are also summarized in Table 3. The contours indicate a large area of low (less than 5.0 feet) piezometric head corresponding fairly closely to the limits of plant excavation and backfill. Around most of the perimeter of I S

14 the plant backfill, the piezometric head rises relatively quickly to about 15 feet. The exception is the area near the southwest corner of the plant backfill where the contours rise more slowly. This is most likely due to the presence of the backfill around the Cooling Water Discharge Tunnels, which extends along the tunnels to the plant south from this area. However, the piezometric head does increase in the southward direction along the Discharge Tunnels between Wells ESS-2C and ESS-14. Therefore, shallow ground water does not migrate southward through the backfill around the Discharge Tunnels to the Discharge Canal. The piezometric contours shown on Figure 4 indicate that ground water in the shallow surficial soils surrounding the plant flows from the natural, in-situ Yorktown silt to the backfill surrounding and underlying the plant and from the plant backfill to the Intake Canal. 5.3 YORKTOWN SAND Four monitoring wells were installed in the Yorktown sand as part of the current study. The wells are: ESS-1B, ESS-2B, e ESS-3B, and ESS-13B. The locations of these monitoring wells are shown in plan on Figure 3. Contour lines of piezometric head based on water level readings measured on April 27,1995 are presented on Figure 5. Ground water elevations are summarized in Table 3. The contours indicate a gradual and relatively even gradient in a generally easterly direction (approximately plant northeast). This flow pattern is consistent with regional data and indicates that if a contaminant were to enter this hydrogeologic unit, it would tend to move toward Monitoring Wells ESS-3B and ESS-13B and subsequently toward the Cape Fear River. e

f 15 6.0 GROUND WATER SAMPLING AND ANALYSIS 6.1 SM1PLING OF MONITORING WELLS t 6.1.1 Phase II The six monitoring wells installed as part of Phases I and II of the field exploration j were purged and sampled on April 4 and 5,1995. The sampling schedule is summarized as follows: Antil 4.1995 I ESS-3B; ESS-2B; and ESS-13C. Acril 5.1995 ESS-1B; ESS-2C; and ESS-13B. Three or more well volumes were purged from each well prior to sampling. Hand bailing was used for purging the wells with the exception of Monitoring Well ESS-13B, where an air-pressure-operated pump was used. Dedicated bailers and bailer lines were used for sampling at each monitoring well in order to minimize the potential for cross contamination. The water samples were drained from the bailers into 250-milliliters (ml) Nalgene bottles. The bottles and caps were thoroughly rinsed with sample water prior to filling. The samples were subsequently delivered to the CP&L radiochemistry laboratory at the Harris Energy and Environmental Center in New Hill, North Carolina on April 6,1995. Two additional samples were obtained from Monitoring Well ESS-2C on April 11, 1995 and delivered to the laboratory in New Hill the following day. 6.1.2 Phase III The seven monitoring wells installed as part of Phase III of the field investigation were purged and sampled on April 27,1995. Monitoring wells were purged and sampled in

r l 16 the same manner as were the wells sampled on April 4 and 5,1995. The samples were delivered to the laboratory in New Hill, North Carolina on April 27,1995. 6.2 LABORATORY ANALYSIS The following subsections summarize the results of laboratory analysis on water samples obtained from monitoring wells installed at the Brunswick Nuclear Plant. The memoranda prepared by the laboratory documenting the results are presented in Appendix B to this report, and the analytical results are summarized in Table 4. 6.2.1 Samples From Phase I and II Monitoring Wells The samples from the Phase I and II monitoring wells wer.nalyzed in accordance with the industry standard analytical procedure, which has been incorporated into CP&L Procedure LS-ER-1. This procedure involves the addition of sodium hydroxide and potassium permanganate to 50 milliliters (ml) of the water sample to prevent the carryover of volatile nuclides during distillation. The first 10 ml of distillate are discarded and a 5-ml aliquot of the final distillate is mixed with 13 ml of Ultima Gold liquid scintillation cocktail mix. After dark adaptation for more than one hour, the samples are counted in a liquid scintillation counter. The sample from Monitoring Well ESS-2C had a tritium concentration of 46,700 pCi/1, while the remaining samples showed no tritium. Two additional samples from Monitoring Well ESS-2C were analyzed on April 12, 1995. The first sample was divided into two parts and each portion was analyzed using the procedure described above. The tritium concentrations were 48,700 pCi/l and 49,000 pCi/1, confirming the results of the previous analysis. The second sample was analyzed for gamma activity. The results of this analysis indicated no detectable gamma activity and no detectable Cobalt 60 (with a detection limit of 8.1 pCi/l). Since most of the radionuclides in the Radwaste Tank inventory are gamma emitters, these results confirm that tritium is the only radionuclide in the Radwaste Tank inventory with significant mobility. 6.2.2 Samples From Phase III Monitoring Wells Water samples obtained from the seven monitoring wells installed in the third phase of the field exploration on April 27,1995 were analyzed in the CP&L radiochemistry laboratory in New Hill, North Carolina on April 22,1995. CP&L Procedure LS-ER- , I l

17 1 1; as described above, was used for the sample analysis. The sample from Monitoring Well ESS-16 had a tritium concentration of 34,900 pCi/l (average of three analyses). The remaining samples showed no detectable concentrations of tritium, j l l i-I I

i l

l

y 18 7.0 CLOSING REMARKS In accordance with the Site Assessment Plan submitted to NCDEM by CP&L (page 3, item 4, paragraph 1) this project began with the installation of piezometers in the shallow surficial soils and Yorktown sand at the Brunswick Nuclear Plant. Installation of the piezometers occurred as planned except that (a) one piezometer could not be installed due to access difficulties and (b) the three piezometers planned for the Yorktown sand were actually installed as monitoring wells. Ground water levels obtained from the piezometers indicated flow toward the Intake and Discharge Canals in the Yorktown silt and flow in a generally easterly direction in the T 3rktown sand. Based on an evaluation of the ground water flow directions and gradie its ( in accordance with page 3, item 4, paragraph 3 of the Site Assessment Plan), the three monitoring wells in the Yorktown sand were sampled and three additional monitoring wells were installed and sampled. The new monitoring wells included a well in the plant backfill near the point where the Discharge Tunnels cross under the plant security fence (ESS-2C) and shallow and Yorktown sand monitoring wells near the Intake Canal on the north side of the security fence (ESS-13C and ESS-13B). The six monitoring wells were sampled on April 4 and 5,1995 and subsequent analysis indicated the presence of tritium in Monitoring Well ESS-2C. The concentration was 46,700 pCi/1, which is approximately twice the standard for drinking water. As the result of finding tritium in one of the monitoring wells installed at the site, installation and sampling of seven additional monitoring wells was planned in order to determine the extent of the tritium. The monitoring wells were installed during the period from April 25 and 27,1995 and sampled on April 27,1995. Only one of the seven wells exhibited the presence of tritium. Monitoring Well ESS-16, which is located in the plant backfill in front of the Administration Building and near Well ESS-2C had a tritium concentration of 34,900 pCi/1. However, Well ESS-2D, which is located on the west side of the Discharge Tunnels opposite Well ESS-2C, did not indicate the presence of tritium. The three monitoring wells toward the south end of the Discharge Tunnels were also negative for tritium and all three of these wells (one of which was in the tunnel backfill) had ground water levels substantially above the levels observed at Wells ESS-2C and ESS-16, indicating that they are not down ' l

F j L l t 19 l gradient from the plant. Thus, ground water in the area outside the plant backfill flows toward the backfill and from there ta the Intake Canal. No tritium was detected in the monitoring wel'Is in the Yorktown sand. No movement below the Yorktown sand is expected because of higher piezometric heads in the underlying formation. i i The professional services performed and findings presented herein are in accordance ] l - with generally accepted engineering principles and practices. In performing the work, l l D'Appolonia has utilized information from other sources. If additional information becomes available which may impact our findings and conclusions, we request the opportunity to review and modify our work, as appropriate. l Respectfully submitted, ? CL~ Alan D. Halperin, P.G. i Project Geologist i /bJ g y J. Timothy Onstott, P.E. Project Manager ADH:JTO:jto: mis 1 i L l l l J

4% k TABLES i 1 ]

60 / e A f t Oinl 1 0 o a 0 3 9 3 3 9 7 0 2 1 0 8 0 pt e 8 4 onS 6 4 1 4 3 4 4 5 0 9 1 1 9 TeB ) tee f( k f c EC OaP 4 9 4 2 4 1 7 3 6 7 2 0 A p d 7 6 3 6 4 7 7 7 2 3 2 1 F o n R Ta 1 U S S I DN f U Onee 5 9 7 9 8 7 4 4 9 7 9 4 O pr R oc 8 8 7 3 0 0 0 0 0 4 6 4 1 1 1 1 1 1 1 G TS S W L O I r A A L e T T N E te ENI B mip 0 4 2 4 3 2 9 9 4 2 4 9 DAL S oT 4 4 3 9 6 6 5 5 2 6 0 9 LO H z 1 1 1 1 1 1 1 1 1 1 1 1 NPR T e i O R A P P ITA C E AEI D 1 I LL T d E LC R h e t r 5 0 0 0 0 5 0 0 0 0 0 0 L AU O pe r B e g 2 3 2 9 4 4 3 3 1 2 9 e TN N Dn 9 t 1 1 1 1 1 1 1 1 1 1 1 e A S A m T NK C T o I R z RI e EWO i c *n e p TS P l I ENI o 8 4 3 9 6 0 7 8 0 9 0 8 ca M UT $r t s. 1 4 5 7 7 3 8 2 3 4 6 p i i x RU e a 9 3 2 7 1 2 8 4 2 9 4 2 y h O BO e e f v 2 2 2 2 2 2 2 2 2 2 2 2 p t t Z S Rl f e E E o d I r n P o te i a e *n w ta d t d n nc o n ai 6 3 6 5 7 0 6 9 5 e 3 7 4 u uf I s o t or a 6 0 8 4 8 0 4 9 e r 9 1 1 r uv 2 2 1 2 r g 1 2 2 2 2 2 1 1 p GS e r e o lE r f l e a c c n i e h re d 5 5 5 5 5 5 5 5 5 5 5 5 p .f e 9 9 9 9 9 9 9 9 9 9 9 9 a e r l e el r v / / / / / / / / / / / / t la a 8 7 6 8 7 7 7 7 7 6 6 6 g ei s 0 0 0 0 0 0 0 0 0 0 0 0 r L Dt e s / / / / / / / / / / / / o a n 2 2 2 2 2 2 2 2 2 2 2 2 f e I 0 0 0 0 0 0 0 0 0 0 0 0 S 'n 6 d nn e a a r et s r u Mr e g e i e n te F v n oi m A A A 0 1 2 3 o bfao t o 1 2 3 4 5 6 8 9 1 1 1 1 t r z e p e S S S S S S S S S S S S fe eo i S S S S S S S S S S S S e ' 'FT P E E E E.E E E E E E E E R

7 0 / A e 1 t 0 i 0 pn 0 9 5 5 0 0 0 6 0 5 0 6 6 8 o o 4 8 3 2 4 9 Tt 7 7 7 6 6 3 5 7 4 n 4 4 4 1 e 4 1 1 B ) d t e n e f a 0 4 5 5 S 1 3 6 2 0 5 7 0 3 ( 0 6 5 5 E p 5 4 4 8 8 6 9 7 9 7 7 5 1 C o 4 1 1 A T F R U n S pe 7 3 9 0 0 3 5 5 5 8 4 6 4 D o er 3 9 6 8 0 0 N Tc 5 4 4 1 1 1 5 9 7 9 5 0 0 1 1 1 1 2 S U S L O R IA G T mn A W o e 7 3 9 4 4 7 9 9 9 2 8 0 8 E e t DT N O oc 5 5 5 2 t r 8 4 1 2 4 3 4 5 4 9 5 4 1 N NI L BS 1 1 1 1 5 2 2 1 1 O AL E LO B ITPR S A R A p I I i L A C T T 2 8 4 0 0 3 5 5 5 8 4 6 4 L EI P l 9 4 2 3 5 4 5 2 6 4 0 5 5 l 2 A L T E e 5 5 5 2 I l le 5 2 2 1 1 1 1 E T C R D W w 2 1 L S B N U O g N N n I A ir T LK h d o L C T e 0 0 0 0 0 0 0 5 5 0 0 0 0 i t t EI R pl n l ei 3 8 5 7 5 6 7 2 6 7 2 7 7 o WWO D D r 6 5 5 2 5 2 2 1 2 m 1 1 1 1 S P G NI a l I N UT c i c *n I e p R RU y O BO n o 6 8 3 4 6 t 9 6 3 6 6 3 8 f 1 S ei T rt 6 2 9 8 7 5 1 0 4 1 8 8 8 o h I e a 9 3 2 8 2 2 4 8 8 8 n tp 1 f v 2 2 2 1 2 2 2 2 2 2 1 1 N o e e e 1 1 1 O Rl d i t E a r M t e n ta es w e *n e d r n c o p u ai 6 3 6 3 7 1 0 6 3 2 4 4 3 r r e o f t r a 5 0 0 9 8 0 9 9 9 9 9 9 g 1 l uv 2 2 2 2 1 2 1 1 1 1 1 a r 1 1 S e c o l i f E h . ce p l a e n r ve r g xe d 5 5 5 5 5 5 5 5 5 5 5 5 5 I f e 9 9 9 9 9 9 9 9 9 9 9 9 9 r e el / / / / / / / / / / / / / l o a r t laa 4 6 5 3 7 5 6 5 4 3 6 6 6 f es Si 1 1 1 0 2 2 2 2 0 0 2 2 2 7 Dt s / / / / / / / / / / / / / n er n 2 2 2 4 4 4 4 4 4 4 4 4 4 e a s I 0 0 0 0 0 0 0 0 0 0 0 0 0 r ei u Mr g C i e F vV C B C oP B B B C D C C 2 3 3 4 5 6 o bf l l t a o e 1 2 3 2 2 3 S 1 1 1 1 1 1 t W r e p S S S S S S S S S S S S S fe e o FT S S S S S S S S S S S S S e E E E E E E E E E E E E E R ""')

i ~. TABLE 3 948001A/04 GROUND WATER ELEVATIONS'" BRUNSWICK NUCLEAR PLANT i SOUTHPORT, NORTII CAROLINA 2/13/95 - 2/17/95 3/1/95 3/7/95 4/27/95 PIEZOMETER / AVERAGE OBSERVED OBSERVED OBSERVED MONITORING ELEVATION ELEVATION ELEVATION ELEVATION WELL ESS-1A 18.82 18.88 18.73 18.03 ESS-1B 2.77 3.51 3.20 3.35 ESS-2A i1.09 11.37 11.14 10.60 ESS-2B 2.60 3.86 3.74 3.70 ESS-2C 4.04 ESS-2D i 9.56 ESS-3A 14.15 14.51 14.35 12.81 ESS-3B 2.13 2.87 2.60 2.78 ESS-3C 12.68 ESS-4 14.70 15.01 14.71 13.18 ESS-5 11.74 11.53 11.57 11.05 ESS-SC 10.87 ESS-6 10.13 10.94 10.86 9.56 ESS-8 16.99 18.02 17.56 15.20 ESS-9 15.66 16.23 16.21 15.03 ESS-10 18.10 17.45 17.53 17.45 ESS-11 17.68 18.39 18.14 17.15 ESS-12 18.34 18.27 18.21 17.13 ESS-12C 16.64 ESS-13 2.71 3.08 2.76 2.81 ESS-13B 2.67 ESS-13C 2.88 ESS-14 7.95 ESS-15 8.95 ESS-16 3.85 MW-1 20.33 17.47 17.45 MW-2 10.63 10.71 10.60 (" Feet tbove Mean Sea Level.

( .~ TABLE 4 948001A/05 RADIONUCLIDE ANALYSES RESULTS BRUNSWICK NUCLEAR PLANT SOUTIIPORT, NORTII CAROLINA SAMPLE DATE COLLECTED TRITIUM (II) ACTIVITY 3 Yorktown Sand (Deep) Ground Water ESS-1B 04/05/95 < 868 ESS-2B 04/04/95 < 868 ESS-3B 04/04/95 < 868 ESS-13B 04/05/95 < 868 Shallow Ground Water ESS-2C 04/05/95 46,700 1,200 ESS-2Co.2) 04/11/95 48,700 1,200 ESS-2C 04/11/95 49,000 1,200 ESS-2D 04/27/95 < 928 ESS-3C 04/27/95 < 928 ESS-5C 04/27/95 < 888 ESS-12C 04/27/95 < 928 ESS-13C 04/04/95 < 868 ESS-14 04/27/95 < 928 ESS-15 04/27/95 < 928 ESS-16 04/27/95 34,900 1,100 1 I

Duplicate samples collected and analyzed.
Sample also tested for gamma activity: total gamma activity < LLD; Cobalt 60 < 8.1 pCi/1.

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REFERENCE:
USGS TOPOGR APHIC M AP, 7.5 MINUTE SERIES. p SOUTHPORT, N.C. QUADR ANGLE. DATED 1990. SCALE: 1" = 2000'.
I CONTRACTOR PARKING 5 6 co PLANT r NORTH g. o TO WAIN ENTRANCE g gg (HWf 133 & 87) o h @ESS-15 ) Q< ( N m ~ _____c DISCHARGE CANAL l UNG WATER DISCHARGE TUNNEL f PARKC e j t ~ / ESS-1 N ESS-16j D CP&L PARKING -u h,,7 _Buitoa -= w o; o s... Ro _ l ecee ~q DOCUMENT ADMIN Y" CONTROL ANNEX 8 IL00 w cc C C[ 1 l 3 8 m - h l b o O 8 y W SW g e ....,+ 1 i i gg 5 e E.O.F. D l TRAINING 'g 3 BUlWING t I o LOW LEVEL I cn RADWASTE I h d BUILDING w L 8 I o a B r, v s 'I l .r-m 6 5 D 8 C' a Ei s=3 ,![ m i m 's, S a c= n'kE f' m EQUfP TAC BLDG s, _1, i. o s m \\ f-
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/o CONEOL BUILDING s CEACTOR I M REACTOR e BUILDING I BUILDING e i o J Availante on UNIT NO. 2 RADWASTE BUILDING UNIT NO.1 1 Aperture Cud [un*' l O O lW Q DIESEL I ..e QS I GENERATOR i t o BUltDINo N O O E-l. O," g5 Q l -_4.____l ~,,, l l a = sig l s ESS-13C i i w ,.,_ ~~,,. "~~.. __ . k CIRCULATING ll 8 TO BIOLAB WATER INTAKE L S.,"TERE _3 INTAKE f,,, ,-. u _ _ _ _.. _ _ _.._. _ _ _ _ _ _ _ _ 0 ..________JL_____________- FIGURE 2 INTAKE CANAL YORKTOWN SILT APPROX /MA TE FORMER UMIT OF (SHALLOW) MONITORING WELLS OENERAL PLANT EXCA VA 7/ON EVALUATION OF LEAKAGE FROM UNIT No. 2 RADWASTE EFFLUENT DISCHARGE LINE BRUNSWICK NUCLEAR PLANT SOUTHPORT, NORTH CAROLINA PREPARED FOR CAROLINA POWER & LIGHT COMPANY LEGEND: SOUTHPORT, NORTH CAROLINA MONITORING WELL QOggggQ 4
E h d CONTRACTOR PARKING l 8 9 m PLANT = NORTH g o TO MAlN ENTRANCE gjy (HWY 133 & 87) <2 mD2 / $ h \\ Q l ? 0c DISCHARGE CANAL I, COOUNG WATER DISCHARGE TUNNEL 5,JtKING g v / 1 " CP&L PARKING k ADMIN DIRTk BUILDIN $ (>D DOCUMENT ADMIN 3 CONTROL ANNEX a e c Q, x o _'O m y u G La o G a I l 1 g 8 m il 6 CL o E.O.F. l l 4 TRAINING ~ DUILDING e LOW LEVEL P n V N g{ E Q RADWASTE w o o n BUILDING 5 u o o L oE g n .r-m b C kg [I N m m O l I I o FlR O EQUlb.g TAC BLDG m i l l r r, / CouNG 1-R - gmc CP&L PARKIN ESS-1B --k = x s \\ /9 4 \\ / o N X4 CONTRACTOR PARKING + y // / / SCALE 200 0 200 400 - ~.,
I I SWITCH YARD O RELAY HOUSE ESS-28 CT u P. 't I .i m 0" O z o o 1010101 101010101 n 1I It ~ TURBINE BUILDING TURBINE BUILDING UNIT NO. 2 UNIT NO.1 g n WAREHOUSES g n a / {g y CONTROL BUILDING {gg.,,3{ u M \\ / 'I f I REACTOR l BUILDING REACTOR b(m ;, I BUILDING n UNIT NO. 2 RADWASTE BUILDING UNIT NO.1 _ ;) 4 Mansa T n 0 Avt:lity Om "%erture C$; cf" o "gggg= ~ 9 _ mE5LL I C" L [ GENERATOR O I-O BUILDING I-O~ I~5 h l I De a ~ ~ " m ss SS-138 k CIRCULATING TO BIOLAS I WATER INTAKE L SJATER "E ] INTAKE FIGURE 3 INTAKE CANAL YORKTOWN SAND (DEEP) MONITORING WELLS EVALUATION OF LEAKAGE FRCM UNIT No. 2 RADWASTE EFFLUENT DISCHARGE LINE BRUNSWICK NUCLEAR PLANT SOUTHPORT, NORTH CAROLINA PREPARED FOP CAROLINA POWER & LIGHT COMPANY SOUTHPORT, NORTH CAROLINA LEGEND: MONITORING WELL gogggg
0. h ESS-6 J. 9.6 CONTRACTOR PARKING --J 8 ESS-9 m PLANT l 15*0 = NORTH g gg $* k _ _ TO MAIN ENTRANCE f.0% N c g (HWY 133 & 87) o @ESS-15 y-j 9.0 h h N i t ~

ESS-2Fc 4.3 oiscs^act c^=.

uNG WATER oisCNARGE TuNNEt 9.s eARxis 4 e / / ESS-1 CP&L PARKING ESS 16 1 / 8.0 m 9 t h * *i 3,g. ,g, Dig 7g ~ [ BUILDl; M Es Ag,,8( g a s g.O ESS-5C ,g 10,9 \\ g r a e g w g @ l I i g i 5 e E.O.F. I i TRAINING i BUILDING o E RADWASTE 'u BUILDING g { L L __h ESS-4@" 3-j 5 13.2 sc, l o iI I TAC BLDG I I C": 15,o cYs N 9 'c P x / [ ESS-1Ag /l' _ { COOUNG TOWER BASE a._ 18.0 CP&L PARKING \\ [4 \\ /e N /f CONTRACTOR PNtKING \\ x/ ,\\/ #// 7 SCALE i i 200 0 200 400 F@
N t.ds-o Ess-11 C 17 2 ESS-10m g gw_1 j 15.2 O b 17.5
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C= 1 i 3 ES -2C O o 4.0 0 m bb 1010101 101010101 I TURZNE BUILDING TURBINE BUILDING UNIT NO. 2 UNIT No.1 (l))ESS-3C /gp* _ c N m t e " 'N l"i;a"to ! eu'^22 I W ivt 12.7 _kt C4g uNn No. 2 R,0,,m suitoiNo uN n No. i N $$oky?c m o on O_ = ea r m i Ef#c" s vw-2" t-N 10.6 -\\ h 5" \\ S (3/7/95)- l """k 08 gx 3 7 @o A= s k CIRCULATING )L S.EhTE I TO BIOLAB WATER INTAKE ,[$$_j3 E _P,-- 'NTAxE .2. 9 A y [ ?g l o - E cannt LEGEND' HALLOW) GROUND WATER ELEVATIONS (4/27/95, EXCEPT AS NOTED) MONITORING WELL-INSTALLED 1995 EVALUATION OF LEAKAGE FROM UNIT No. 2 "#U## PRE-EXISTING MONITORING WELL BRUNS P CL R PLANT SOUTHPORT, NORTH CAROtlNA PIEZOMETER-INSTALLED 1995 eatpAaco ros ESS-1B WELL/ PIEZOMETER ID CAROLINA POWER & LIGHT COMPANY 3.4 OBSERVED GROUND WATER SOUTHPORT, NORTH CAROLINA ELEVATION IN FEET ABOVE MEAN SEA LEVEL gOgpgggg 10.0 EQUIPOTENTIAL LINE
c __. _. \\ 1 CONTRACTOR PARKING h PLANT i = NORTH m 4 o TO MAIN ENTRANCE gg (HWY 133 & 87) <s TD y-Q= % k N ( ~ _____a y s DISCHARCE CANAL COOUNG WATER DISCHARGE TUNNEL PARK! g s / CP&L PARKING v k k ADM m OIRT)... BUILD T DOCUMENT ADMIN y CONTROL ANNEX $ co o_ a, C O E w _ U g, n w I 1 I 2 O n 6 $ E.O.F. i I i TRAINING BUILDING LOW LEVEL P i, o i M{ ~ ) RADWASTE o w E )N BUILDING o L. 5 o 'I h V .r-g g n n E T l l l O 1 I O FIR TAC BLDG C u I 1 I 1. \\ o i I I / t COOUNG TOWER BASE 2__ ESS-16 "-f / CP&L PARKIN l 5 3.4 = / i \\ /[ \\ / CONTRACTOR PARKING \\ x# N/ +/ / / / l SCALE i i 200 0 200 400 _m
w.-- I i SWTTCH YARD ) D D RELAY HOUSE ESS-2B pf O 3.7 _/_ m @) D M h3 W m C" 3 _.L-O O E" 5 0 0 0 l m m [5] [H] a ,14101 O l 1010101Ol j n I RBINE BUILDING TURBINE BUILDING UNIT NO. 2 UNIT NO.1 g WAREHOUSES n n CONTROL BUILDING f (q {gg_}{ n l:=:; ! :ess: 2.s egs UNIT No. 2 RADWASTE BUILDING UNIT NO. Q,*,, % ]N .3jfg m i ? i [, ( cgggj7cg ,a oQ Bu\\tDino O Q Jrd E" Q = I I 5 r = OO Jc .t I" / ss ESS-138 ~ l; CIRCULATING TO BIOLAB [_3 INTAKE WATER IMTAKE WATER g i FIGURE 5 INTAKE CANAL YORKTOWN SAND \\ (DEEP) GROUND WATER ELEVATIONS \\ (4/27/95, EXCEPT AS NOTED) LEGEND: EVALUATION OF LEAKAGE FROM UNIT No. 2 RADWASTE EFFLUENT DISCHARGE LINE MONITORING WELL BRUNSWICK NUCLEAR PLANT SOUTHPORT, NORTH CAROLINA PIEZOMETER patp4aca rea ESS-1B WELL/ PIEZOMETER ID CAROLINA POWER & LIGHT COMPANY 3.4 OBSERVED GROUND WATER SOUTHPORT, NORTH CAROUNA ELEVATION IN FEET ABOVE MEAN SEA LEVEL gOgggg 3.0 EQUIPOTENTIAL LINE a
e l' g ) 7-LOCKING CAP j h d \\ e i e* 2" PVC CASING e g IE f! [l:p;. (-5.: x, ^%"#^*^'%MW $ 4 l 9 x 1 4 s BENTONITE SEAL o O i y W 1-1/4" GALVANIZED 8 E SCHEDULE 20 WELL CASING.--- 5 $ f. E $ 5 & jig-i; l!'!f - SAND PACK '.I: g
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FIGURE 6 TYPICAL ^ EE ABLE 1 FOR INSTALLATION EVA ^ " ^^ DETAILS FOR SPECIFIC PIEZ0 METERS ADW STE EF UENT 0 SCHARGE U BRUNSWICK NUCLEAR PLANT SOUTHPORT, NORTH CAROLINA PREPARED FOR CAROLINA POWER & UGHT COMPANY SOUTHPORT, NORTH CAROLIN A IDAPPOILONILA
h STEEL PROTECTIVE COVER I I LOCKING WELL CAP 5 NOTE: MONITORING WELLS IN PAVED p AREAS COMPLETED WITH FLUSH MOUNT s PROTECTIVE COVERS. l l Es ll 7,//// %vmwwmwssww%%wxy /m:m mw' 'J f/A /f I' f CONCRETE #*(M.. ':[.:if U. u r 12 'l.';' - ,$,S; NON-SHRINK CEMENT 3., Q ; w.-,..i .r. ' l BENTONITE SEAL $ b e c y w h! 2" PVC WELL CASING I U e [: { ! s ?. - : " x 55 9
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? 1 55 fi PLUG ... n%% i i FIGURE 7 TYPICAL NOTE: MONITORING WELL INSTALLATION SEE TABLE 2 FOR INSTALLATION DETAILS EVALUATION OF LEAKAGE FROM UNIT No. 2 j FOR SPECIFIC MONITORING WELLS. RADWASTE EFFLUENT DISCHARGE LINE l BRUNSWICK NUCLEAR PLANT l SOUTHPORT, NORTH CAROLINA P8EPARED FOR CAROLINA POWER & LIGHT COMPANY SOUTHPORT, NORTH CAROLINA IDAIPIPOIL@lWI[A
g. D APPENDIX A BORING LOGS 1
l l l l L
VISUAL CLASSIFICATION OF SolLS soRiNG No. Ec5 M ? AGE / OF / PROJECT NO.: 9/80d/d PROJECT NAME: d 8 7 /, dra n54v,e d //a. -f ELEVAT10N: 2f, l-LOCATlON: ENGINEER / GEOLOGIST: 4 M/gn-, GWL: DEPTH DATE/ TIME DATE: 2 /8/9[ DRILUNG CO.: 2, C.//i,, c /3s/s DEPTH DATE/ TIME DATE STARTED: 09ffg DRILLER: 1 #ines W. N///cr CASING SIZE / DEPTH: / DATE COMPLETED: J F /. Ne a,/ A +<< s DATE BACKFILLED: DRILUNG METHODS: 2 I gha n s 5 E
h DESCR a oN REuARxS o
u sa-w- H 8 m a u loose hLa $Nff gdadf f 2,C loosa h ined. deese dark s tou-36aWJ $1 lf, />10 / $ i y,Q {M / cost y rey IrIdy fee dotsd, M eiff M ~ ~ coa,sans win aa,ss ~ ~ u f a f 9. C ~ /0. 0 -.jp M rhed, desse dark piey ytre,, sudy s;//,.som clay, wef ,,, g ~ ~ [A/ O C ic' & C A'//V 6 ~ M M M se em me w m e en e '5 W W M M M em 4 Elim W M M M 6 Wu NOTES:
i VISUAL CLASSlFICATION OF SOILS ,ogine so, ss /s PAGE / OF 2-- PROJECT NO.: 9'/8Cd/4 PROT.CT NAME: d P /- 4 6,rui s v ic/. 8/h e ELIVATlON: 26f LOCATlON: ENGINEER / GEOLOGIST: //,//a/a,,r,' GWL: DEPTH DATE/ TIME DATE: 4 //3/f 5 DRILUNG CO.: 8.Od//,,#A55/5 DEPTH DATE/ TIME DATE STARTED: 2/'/.y /9/00 DRILLER: 7' [/ta/mer s CASING SIZE / DEPTH: / DATE COMPLETED: DRlLLING METHODS: J $ /,, J u / a u u r :4 f// - t'/4 /B /4//,a s,/e, 4,,,,,, DATE BACKFriim: N $^ >^ @b ^ o k fb DESCRIPTION REMARKS d-w-g is m o u loox brows. N red be m ed. g ra ' ed sul, m e e s t i ~ ~ !.oom dark brown s bAsek.s,// ~ m ; y ~ Looso I::A/ 9 eey s:/ly (,,e ya,,,a) ~ sud, m..s e ~ ~ ~ b ro wn b. /o a f f+ ~ ~ ~ ~ ~ log u y rey halow 7 ff ~ wef be low 8 f/, ~ - jo - /0D 3, pusAd 0.C l Hod, dersse dark grey grees, sely S;/f, some shells ~ /$ - m ore clany below /C (f gg pashe/
2. 0
/1.o l - 20 _ Leose h Wed, des,se dark g rey y paal'*/
d. s g ree., efayey sa.), we i l
~ in lerlayered.siily clay beds ~ ~ ~ ~ 0.2 - 0.4 (6 di. cl ~ l -gs-pa sted t.3 ,y NOTES: u
VISUAL CLASSIFICATION OF SOILS ,ogine 30, Ess //3 PAGE Z _ OF A PROKCT NO.: 9f'84d/d PROKCT NAME: d M e l. 3rui.s w,c /c Flh r ELEVATION: 26.6 LOCATION: ENGINEER / GEOLOGIST: 4. //a/aff /,, GWI.: DEPTH DATE/ TIME DATE: J//'//9[ DRILUNG CO.: R d,///n < /s 3 /> DEPTH DATE/ TIME DA1E STARTED: DRILLIR: 7 [l4 [,ner s CASING SIZE / DEPTH: / DATE COMPLETED: 2 //v /9f DRlujNG METHODS: 9f4/ i,. / D / /o //a w.5 /c m ),, u r s DATE BACKFILLID: $ b, - D ^ g h Ih DESCRIPTION h $3-W- 8 @g" REMARKS E o - s g' FMed. diff dark pg,4 g,o 3 < ey 9 ree,, s/Hy ck M inkr k ;- bd y w%e.ca-4, we+ ~ grey g reen r .s h e ils, ra ce plu r' ~ .1arne -3(- fropne~is, wei .s 6 pshed 2.0 ~ ~ - yo - M. of ~ _ #l l' 2 +o,> ls Wv - yf- /hed thf in ferfa.nt,.a cd yery W1 of doc"5 ,3 /a rl y ref ;<<<,. s. tly clay ed _ gg g rey green f.,.e.cus war -gg She IZ /hed, dense h very dense grey _ 39 iy j,g med. b f. e g ra a-a A sud 33 ~ ~ }< ace in kr in: kJ s:t+ afsva s2 ~_3 /0, "gs /Z ~ 53 ~ As<eeeed -I> t.3 ts _~ no sanples alleefel Grob of BoRtN4 43 0 b'I'" 6 7 SI- ~ NOTES:
[ VISUAL CLASSIFICATION OF SOILS 860 2A BORING No. PAGE / OF / PRO!ECT NO.: W$DelA PROJECT NAME: CP+L Bru sw,'cl f/u t ELEVATION: L' O. 3 LOCATION: ENGINEER / GEOLOGIST:,4./%c/pt/in GWL: DEPTH DATE/ TIME DATE: B/7 /9f DRILUNG CO.: g,(4 f/,n e,4s 5 /s DEFTH DATE/ TIME DATE STARTED: er n f yp' DRILLER: 7, // nes h/. /h, //c r CASING SIZE / DEPTH: / DATE COMPLETED: i J 't la Nu,/ Auer.s DATE BACKRLLED: / DRILUNG METHODS: @b N ^ l# h gl^}i l^ ! dws[ DESCRieTiON REuAnxS e si-w- a u Loose red brown s. Ny s H, ~ some /ime shne 9 rue / i,ac, a ,ec,< ~.u m u e -tru sino~ / h 9.S S~ ~ loose green k m trottled sudy ~ ~ ~ s;/f dark red }rewn 2-1 brown 9 e d bo/ca io - -,+ u e duu /3.o ENO CF Ben m G e esu 6 M 6 Gum e Wei M M g e eum 6 W g e gun e e g,, M M g e em e m 6 M gg 4 m gu NOTES:
VISUAL CLASSlFICATION OF SOILS BORING MO. D 2S PAGE / OF 2-PROKCT NO.: W860/ A PROKCT NAME: C P A /- 8 r w,5wi d P/a r ELEVATlON: 2d,3 LOCAT10N: ENGINEER / GEOLOGIST: A. Na /peria GWL: DEPlH DATE/ TIME DATE: 2 //6 /93' DRILLING CO.: f, (4/ /t,,, g3, /s DEPTH DATE/ TIME DATE STARTED: 1//&/e)3' DRILLER: 7 (/r,/mers CASING SIZE / DEPTH: ._ / DATE COMPLETED: D7JLLING METHODS: J '/ 1,, ku/ a u ge, 0-7,f/* t y 4 f 3 //, //,w.f4-he s DATE BACKF1LLED: f I go ^ [* [h f DESCRIPTION REMARKS k d!" W" W5 m a o Loose red brown.s; Hy {,,e - med 9ran ed.w)
4. 0
-f-Loosa 3rees L - brow-sa-dy \\ sett wes heIou 2ll ~ - /0 - l - if - ~ ~ $I pusi,rd /. Z ,,, g ~ & ler cedded loose chd grey green sudy s;t+ a-d launakd _ go - silv'y c!.ny n.t shelb, we f ~ ~ S 2. pused 2.0 W -zg- ~ ~ 53 pushed /4 W NOTES:
r i VISUAL CLASSIFICATION OF SOILS BmNG NO. 65528 PAGE I 0F 2-PROJECT NO.: 9'/8Cd/ /7 PROJECT NAME: (1 P c /_ 3rtu,gw,c_i F/a. / ELEVAT10N: 2C 3 LOCAT10N: ENGINEER / GEOLOGIST: A. //a /oc, ;n GWL DEPTH DATE/ TIME DATE: 2 //4,/'/8 DRtLUNG CO.: 8, Caf./,n
Assis DEPm DATE/ TIME DATE STARTED:
DRILLER: T C44/inerg CASING SIZE / DEPN: / DATE COMPLETED: ^//6/9,f DRIL1JNG WETHODS: 4/$ //,//o a 5 /c n.,,4uae r3 DATE BACKFILLID: l g E^ >^ 80 ^ m h I f k DESCRIPTION REMARKS i k $v Ww $5 l o o m b L S ,,7 Locu br L gay gue~ My I L slt+ n d shells, we t 'dS~ 3 waro, J.,-lonch & 35 fl. ~ SC ~ 7 3 2.0 ~ ~ 'fD - +rac e irkrbedded clay d e/09 ~ 7 ~ ~ % 2.0
91. 7
~ 3 ,y .Tn,er oeNed ined. Jresc yiry /!<, e - m ed y ta,,,il s a d and _ xjg__ da rk g rey gree. c - l~;, e y. % se 2 I3 3y th:. ly t'est/ett ~ss- 'a! 4,g ~ It al (Mch dro Sc 5 der'sc g rey med. ~ ~ ~ c.ca r s e f ra ;<,'d w d. % c e ~ ~ ~ ~/b 4 jo NvbeAJ ff d}.gicy fr fl. ~ ~ n ~50 -{i-e a ra.. e l c a.,( ~ g 4 ~ ~ 38
f. t, 23 5%
_ ~ ~ [ 4,<f < red h 59 8 [ l alles /c) SS0 po $nf e s GND of B o A r Nr. be {o a S2 & NOTES: e e I
9 VISUAL CLASSIFICATION Or' SOILS myo go. Ess-ac PACE [ OF / PROJECT NO.; T4. 6CO / /Q PROJECT NAME: C f? / b /3fuMS u//dK t h r" ELEVATION: LOCATION: //te,q /s', cog / f Ajc w4fyyt,, ggf ycu,4W C Y Tu^4vst.S ENCINEER/CEOLOCIST: T r)' n g 7 o 7 7-C W DEP m DATE/WE DATE: 2..$-96 DRILUNG CO.: g, (A rt.i g / A sso c. DEP m DATE/WE WE STARE: 2l 45 PA1 _ DRlu.ER: /~~ CH 4LM 6/.S ! CASING SIZE / DEPTH: / IWr9E COMPLETED: Stoo PIM 3 '/ s 4 H4tJD OdddX$ 4.U /w l'O Mcu.ow.gw.:; DATE BACKMdID: DRILUNC METHOOS: 2 3 x a y b^ $^ b ^ wz Yg h @#C "d e E h' !w g( DESCRIPTION Q REMARKS k id j" Ev $g 7",4 s2 70 SADWh) ~ ~ $1 Alf TD /VI EQi VrH ~ ~ ~ $4ssa A b/ O 9/LT' OGN Jorn & WooO f4AG. (4 7-A PP40X. 6 pr ~ ~ Mo s s r.4 r-4 /W.* F. ~ 6 fr- - /c _ j.cose vnN h 6 TO pys e DI yM St L.TY $4Mlb Han O f40Cli7d2D Ta t 2 P'- Q /HG I C T-DfliLLGD v)* M bjcHT/5A0WM f!lG" TD 4 'N f' ~~ ~ ~ - $-/ /.7 ryt etas urv1 3 RN D, 3 0" # 14cLLs M ' SW Sit-Y *%IO Cl AY u Ill 0 r sq UGc'X S Ett.c ws) PsNE Tv A1'M w - 2 I. + S 1 t vf 3 M) b, CA) G T" kude7UET) TD ,p g _ Gany s iLT 1 FI N E SchJO 8 6,7 ~~~L - 3 03 ANr3 SklGU.S, Mf Y u]2T' 1sorrTarn oc' ta' cA.o tJG w 27 w t NOTES: $ Pt.1 Y - 8 4 tdt e l S A M P l.mQ Dito PPG D o'C PVS&Gb 'T'O P O.)TPl^J SAVHPLd
8 "'"" " - N #D VISUAL CLASSIFICATION OF SOILS PAGE / OF / PROKCT NO.: 9ffCC/A PROKCT NAME: C#4 / de u.-s wic/c 8/,t4 / ELEVATION: ff). 3 LOCATION: l ENGINEER / GEOLOGIST:,4. //a/pe r,,, GWL: DEPTH DATE/ TIME DATE: f/2 //ff DRILLING CO.: R. C4 Hin +,43 s /s DEPm DATE/TlWE DATE STARTED: l DRILLER: 7 C4a/mer s CASING SIZE / DEPTH: / DATE COMPLETED: DRILLING METHODS: J fj. /,,, /w/ we, s /o f4, f'ff /O //Sd 0-/,5'& DATE BACKFILLED: .O gm pm O n [Y. l. DESCRIPTION REMARKS IEl(* Ev h $f m
s locu t'ed brow.,.s o lly sn.4, 3
so,e /. e s /o,a gra vel,.s/, moost _. _ ~..:. ~ y, g \\ -S'- ion sn t..riit, s~d more s. H u 14 da,a /4 ~ ~ .r/. moss t - \\ l /0. 0 - /0 - i '/f /ned. dense ia ler Ledded dark bro ~ 3y j, y 2I m,d 4 f,,e sud a.d pr<<>. s'cy ~ ~ ~ i sudy clayey ci//, moos 4,to wa t ~ 05 3 . sane w.14 1A. in /ce Ards e/ ~ ~ ~ S2 1 2.0 da,4 9 reen. grey c,//, cla y, ~' s 4 l i END cr a oA o ro dy j 1 l ~ ( ) l l ~ l s l ~ ' ~' j ~ _i_, ._._ _ _..j j ... { ] i -,. l l l __..___.._{ NOTES: l I ~w n o.e w.
I VISUAL CLASSlFICATION OF SOILS gogiyo no, ggs 3A PAGE / OF / PROJECT NO.: 99844/4 PROJECT NAME: C,D #2 8r,ue swie/c. /'%#s 7# ELEVATION: /8. 4 LOCATION: J ENGINEER / GEOLOGIST: I h4 /per/,. GWL: DEPTH DATE/TlME DATE: .7/4/9f { DRlLUNG CO.: E (,e//,a edss /s DEPTH DATE/ TIME DATE STARTED: /3t/o DRILLER: f. Mines M yh,//cr CASING SIZE / DEPTH: / DATE COMPLETED: /l,,/,4,. a,,,3 DATE BACKFILLID: DRILUNG METHODS: 3 fz /,, a h l4 lN $^ >^ @HE ^ gl l R DESCRieTioN REuARxS e 82-w- a ws m o u loose ~/o pad. dense -la n p,ed. pra ard.3and ~,M sLle ud s;Ny c/ny frayme /s, kp j fas,as a~/ dae} ens w;M derN y S' b'd, desse } /oose darf prey :;/f ~ ~ ~ ~ coarsens down s~ u d, uf ~ m. foose freen f ref fee sand wolA .s so-e sill J etay, gtaucasfic Mt -jp - e. e gas g E//2 ff U FR its 6 W M M e esu em W W W 6 Wu em e em aus M M M e muu em 14 5ll= SM e end Gm e ein GN M GWE N me aim 8' 4 W M 4 Sn NOTES:
9 VISUAL CLASSIFICATION OF SOILS soRiNG No. Es.5 3B PAGE / OF b PROJECT No.: 99'[C O/) PROJECT NAME: C P e-4 3rgosw,eI /'/a + f ELEVATION: / f, /o LOCATION: ENGINEER /GEOLOGtST: /?. & /oe f;,, GWL: DEPTH DATE/ TIME DATE: 2 //f/95' DRILUNG CO.: R Gf/,n.t As s /s DEPTH DATE/ TIME DATE STARTED: "T~. C /ta /rne r 3 CASING SIZE / DEPTH: / DATE COMPLETED: 2///,,/9f" DRILLER: 4 % /0 / ' //,a St.,, A..,es DATE BACKFlLLED: DRlLUNG METHODS: 3 '/z i, 4,, / /,,,,,,, J, 4 t+- 6 d N $mm >^ m @U ^ h f I CESCRIPTION REMARKS h d!" E" h m m o bCCJe Y" frtl* de,Je f5n Zod w/ sL te r,, -a.as. > s ,e 4 GH h (_ Jru s. ns-a / a 5". D ~ lhed. dense 4 foose y,ite pa, s:N
7. 0 Jru s ; Nors /
o L oose : ree yey . / ' sud Lo,,e ela y /C - e glhI g W D 1ra o. s 4 l *>.a s' de a_ Cl ps heol j* *f IPIf #fd tr t.'tdded $4 f:E lf?r d# j ,o [8 I ' f [6L.A.1 hV ' 8 l&e~ sra kl [. ivy C lay, wer _ 1 g g, pustel og 4 W e aluu l -25 - Sj wl. f 2.0 o +,, n l M NOTES:
+ BORING NO. [5I 80 l VISUAL CLASSIFICATION OF SOILS PAGE __./.__ OF / PROJECT NO.: 7'/f00/A PROJECT NAME: C # v- /, 8ru s ~ ul 8/e f j l ELEVAT10N: /g, 4, LOCATION: ENGINEER / GEOLOGIST: A.M/pers,, CWL: DEPTH DATE/ TIME DATE: t'/2 5'/94 DRILLING CO.: R. (d//a e As s /s DEPTH DATE/ TIME DATE STARTED: DRILLER: "/~ (/ /,,,ers CASING SIZE / DEPTH: / DATE COMPLETED: ) DRILLING METHODS: 3 '/t i,i //a,,/ Aa4er3 :4 7//, 4/ '/v /C //5,4 o - /</./ DATE BACKFILLED: M d 1 N g l[*m >^ U m m l b df "h alllv DESCRIPTION REMARKS Ww $5 m o u Loose -lan ined. pra.-ed sul, .L l .some g r<,e/ nd reel (<ay *.4 l .sl. e.o n s / -.f.,,,, ~ d dar ks - 7_ ~/ sepf4 - c' 5'. o ~ I 57 ), j Lects grey sam /y s.'N, tr o, s t I 9 a co- /.c s.//y / Lom g <ey p ree n {t o,e s*-d a d o e 4< As/drA ~ ~ Asr4 y*y prera s.//y elsy "A c4e t/ .... ~ ~! g $d8 A, we /- ' ~ s2 L,' 2,o [~ ~, ' "" - 15' - S3 1 '2. 0 2- /s. o CN D er Bresuf
4 I
__a w m a6g = ..e= _ =.. - _ l _ _ i j g l NOTES: .i TZ~ ~ m.+. p w i.mW*e$ e.*ma' e
g. epi m.g es m
&ah** N g.p.,e .e -O64** 4 e..a g ree+eW4S' l .,.. w e we-g .g.i.a. ae. @ O
i I VISUAL CLASSlFICATION OF SolLS sonino no, su 1 PAGE / OF / PROJECT NO.: fff#d/A PROJECT NAME: d 8 e' / Brur,s w,c/c 8/an f ELEVAVON: J_4e g LOCATlON: ENGINEER / GEOLOGIST: //, //e/penn CWL: DEP1H DATE/ TIME DATE: 2 /f /9 [ DRILUNG CO.: [', (c'//n #,433 /s DEPTH DATE/ TIME DATE STARTED: op;fo DRILLER: f //i,ies W. /h///tr CASING SIZE / DEPTH: / DATE COMPLETED: DRlujNG WETHOOS: 3 '/2. i n M,,,/ Au,e,s DATE BACKFILLED: b S U N $a N ^ h DE.SCRIPTION REMARKS k d3* E" h $5 m a u loose Jrow, /= /** sa dy si/+ uitt }ra re clay, soso,e erses4rd slene a-t.f +' C ~ ~$ loose red browr, swy s,//' o,osst ~ 6.o l /ned. dense +ar, and red r>tatfled 1 si(+ & c (ny, m oist reddee ed coarser (sa,Jy w, ft y ~ /0 - L.cou dal 9 rey s //, we / so. ( ~ \\ 1 n s i tin. ,c, J //y 3** / Loose dArx p rey grees. i
v. ineis t frace S Aells /2 -/3.5 walatiy:S fraa s;fiss.a / f.
ifo _ l5 _ mes. sease xars g reyAran s.u oa wr we+ e ara ~,.s . - es i& c thed. dense dass redgrey saad silf y wef /1.o NOTES:
VISUAL CLASSIFICATION OF SOILS ,,,,,, g o, ggs r I PAGE / OF PROJECT NO.: 99840/4 PROJECT NAME: C 8 M 8rus~u4 //h Y ELEVATION: / f. 7 LOCATION: ENGINEER / GEOLOGIST: A, /d/pf rin GWL: DEPTH DATE/ TIME DATE: 2/7//6 DRILUNG CO : )?, daf//, #Agg /5 DEPTH DATE/ TIME DATE STARTED: /.ff yf DRILLER: f, / dines V./h,// r CASING SIZE / DEPTH: / DATE COMPLETED: f DRILUNG METHODS: J '/t,,' M*.,/ A..e r s DATE BACKF1LLED: 5 8 6 I ge-82 m k h E DESCRIPTION REMARKS w o o <v <h d{w Ew 0 v m m o o limes /cne ce64/es a.wd we/ brown siH 3.0 loox /.jh / grey browr, si//y.rud f_. we/ lo m o/e f ~ ~
6. f
~ ~ ~ /had. den se red brown saad s>/t y ~ ~ ~/ race clay, n oist ~ ~ ~ roo /s a/ 9.f '/. 5' ~ ~ l0 ~ ~ ~ /Hed, dense grey green and red ~' mot //ed siMy san /, -lene clay ~ ~ wel a f // /2. $ ~ ~ ~ hed.denu /<ff grey se//y sud,g ~ Etvo er 5 eic > n 4 NOTES:
l ) VISUAL CLASSIFICATION OF SOILS ,,,,g, go, g33 gc PAGE OF i PROJECT NO.: 998Cd/// PROJECT NAME: 8s44 8 r 4 r sic / //m / ELEVATION: /9, O LOCATION: j ENGINEER /CEOLOGIST:,//, M /,,, r/. GWL: DEPTH DATE/ TIME DATE: 9/24/9S' DRtLUNG CO.: R, & ///<r *gs s /s DEPTH DATE/ TIME DATE STARTED: DRILLER: 7' (/, /mer.g CASING SIZE / DEPTH: / DATE COMPLETED: DRluJNG METHODS: 3 92 /. ha./ u,,, /, fh </fy NS,4 g, /5 //, DATE BACKFILLED: U 8 @D N $A^ >^ ^ m ff DESCRIPTION REMARKS h d]* E" h 28 m o O l i lin e s fone e > 44 /e.>
d in dense brown sudy.s; H 30 L o o s.e /rph + l rey S:Mysud 1
~ '"*f .5~ o ['. \\ O' h ' d'* 'c 1 ^ le< Ardde f } - SI. rt y% Q red brow-a J grey m ny sn j .}raea e lay, r.a+ ] j j - /0 - S2 '3 /.6 i'to ned. dense darl p rey p<een sofly {,, e aa J, we / ~ /S~-- 2 53 .g
2. 0 Z
/ 7. 4 90 or zou riv4 NOTES:
VISUAL CLASSIFICATION OF SOlLS s6 gogiua no, PACE / OF / PROJECT NO.: 9f804/d PROJECT NAME: (Pv/ 8reut S4 <'c 4 /%.a /- ELEVATION:
28. C LOCATION:
ENGINEER / GEOLOGIST: A. //a/perin CWL: DEPm DATE/ TIME DATE: DRILUNG CO.: R &///,, c)s5 /.s DEPN DATE/ TIME DATE STARTED: 2/7/9.f DRlLLER: l' //,,,p; M, /hi//tr CASING SIZE / DEPTH: / DATE COMPLETED: /p.'50 DRitilNG METHODS: J % /,, u,/ /,,,f,s DATE BACKFidED: g 6 d N 6t^ @U ^ E. @^ E m E / = c $b fh il 3$ REMARKS 2 o DESCRIPTION M W oa o <v g& 84-W- WE 5 m a u lpppe brown s* fly.saad
3. D l oo.se dark grey brown sudy j
_[ .so /t rm e e s f ~ ~ ro e is al 4. S' 4.,6 ~ \\ ~ ~ Lop.se h ined. den se dark brown ~ 1 ~ ~ asd grey.7ardy silf, encis / ~ frAze dark grey g reen c/ay 9.f _,9 _ ~ ~ f fn e r $ f //.5" ~ ~ ~ rned deo. se M.s c.- d y s it t ~ ~ ~ He f d 12. ~ ~ /YS ~ ~ ~ ~ [No ci 3ed inc NOTES:
f \\: VISUAL CLASSIFICATION OF SOILS '~~ , euwe a - Fss t PAC _. _ OF / PRCKCT NO.:
f'/ god / 4 PROKCT NAME: CP7/ 8re* 5 w <~<4
/ %.a f ELIVATION: 2 t/, 6 LOCATION: ENGINEER / GEOLOGIST: A. /fr /pe r,n GWL: DEPTH DATE/ TIME DATE: f/7/ff DRILUNG CO.: R &f//, e As 5 /s DEPTH DATE/ TIME DATE STARTED: /< /0;y/ DRILLER: 7, Mirie s W. /#///cr CASING SIZE / DEPTH: / DATE COMPLITED: DRlLUNG WETHODS: 3 % in Na,,/ /,,u, 3 DATE BACKRUID: I d E EL^
^
SE ^ m N E DESCRIPTlON REWARKS l e ac m-a h m a U / MSe b P!/. dense /ipU brem b grey.rudy sitt a delay, m.,o st ryd s fair. 're s /. ! 2.S" -fr u s.tio-a / # ~ /Med, dense Ark grey green sa d _f_ sin' ud c/9 nois + ~/ru s, fia>a / k 4.0 Reddish inn w prey sud and sitt mor s t
1. f
~ thela dcase grey be s//t A chy ~ 1 ~ ~ red s hronony "-7.f' ~ ~ l0 ~ w f & /0,0 ~" ~ ~ 34*dy /0.f /3,0 Cno cf a r/ in& e e en m W W e Gum m e W W l f saB Suu W l = e m e e m W m.m-Shd W e m NOTES: L
VISUAL CLASSIFICATION OF SOILS ,ogiyo 30, _ Eu 9 PAGE / OF / PROJECT NO.: MftOrA PROJECT NAME: 6 8 e/ dre Sw /cl. //a.n f ELEVATION: 2 /,9 LOCATION: ENQNEER/CEOLOGST:,4. N4 /pt s,4 GWU DEPN DAE/ TIME DATE: 2/7/9f DRILUNG CO: /, (a ///,, c,,155h DEPTH DATE/ TIME DATE STARTED: s' 09 oo DRILLER: 1. #ior s W. /#,// r CASING SIZE / DEPTH: / DATE COMPLETED: t DRILUNG METHODS:.5 % ,o /%/ //w a, < > DATE BACKFILLED: 6 d N Baa ^ m 9^ E =c lh b h Ib E S 10 REMARKS 8 DESCRIPTION 5 gW om w d!- W-M W5 m o 0 Loose h red.Ac+se /1 A f 9 fan as/ 9ecy {ise silly sa d mo rd s,. /.fs r o dor 1' ' _g_ se-,w,,.. / w. 6.z ~ ~ ft1td. dense % deese dard gree" ~ ~ ~ p rey.si// H clay, some fi,e sw ~ ~ ~ p otW ~ _ /O _ 1 we+ helou to.f red brew, m o W/is s, J /3 /3. o END ef Stp th e l 1 l l l i NOTES: ~ l
s VISUAL CLASSIFICATION OF SOILS BORING NO. 655/0 PAGE / OF / I J l PROJECT NO.: 99880/A PROJECT NAME: d 8 e l' 8 rear s e.,/, c1 //a.n f l ELEVATION: /4,3 LOCATION: ) l ENGINEER / GEOLOGIST: A. //a/per/3 GWL: DEPTH DATE/ TIME DATE: J/7/T ) DRILUNG CO.: R. [a& c Ass /s DEPm DATE/DME DATE STARTED: te gy:g { DRidIR: J //ifies V,/h///,f CASING SIZE / DEPTH: / DATE COMPLETED: 1 DRlLUNG METHODS:.3 '/4,%
n,/ Artn e r 3 DATE BACKFILLED:
4 l $ba Sh >^ ^ '[f Ef DESCRIPTION REMARKS k h{v Ww h $5 v m l o o Med. desse h loose liphI fan .siHy. sand, dwp qun s o +oona t +o
3. o ned, dense % ud red bec
[.- notfled siH otad clay, sve f ~ ~ +rusifio~/ k 6.S ~ ~ ped, dense ligh + fan h 9 rey ~ l ~ ~ .su dy silf, } race red s rain s, we f ~ ~ ~ fi,.e s svita dept /r ~ jo - /0. 0 med. dense gu my.s H, we + ii. o ENO C /* 8 C R /tV & 4 .Em W W e quum e m 4 W e e M M L l l 1 .ps NOTES:
) 1 VISUAL CLASSIFICATION OF SOlLS BORING NO. 688 // PAGE OF PROJECT NO.: 9'/8dd/A PROJECT NAME: C P e /,'. 8ru,5w,cl. //an f ELEVATION: 28.3 LOCATION: ENG1NEER/ GEOLOGIST: A. M4/perin GWL: DEPTH DATE/ TIME DATE: 2/6/ 6 DRILUNG CO.: R (af/in r A3 s /s DEPTH DATE/ TIME DATE STARTED: it /f/40 DRILLER: 7 /-/inr3 A/, /hi//tr CASING SIZE / DEPTH: / DATE COMPLETED: DRlu)NG METHODS: Jfz in #a,/ heer s DATE BACKFILLED: 5 8 N B a.- >^ 80 ^ m g ff DESCRIPTION REMARKS h m$v Ev h WE m o 0 fHed, dense }o loose besun ud j ha mottled sady salt wiu frw shells, s)/ly clay frome-/s ud
roofs, dae.p -fo wef f-fr
~ ~ rhed. dense h loose yn en pay s.H s. 5- ~ ~ fHed, elense liph f h1n ad g rey ~ ~ ~ portled silf, -frae c chy jo W wef $F /0 ff red s/zGn;9 to.S* -/2 A / 2.0 Cnb CF Sto s 6 W W e e m 4 m 6 6 e sus elud Gun 6 m W ng see eau 9 W Suu us. eau eux e P em eBE W e es em' mes eumu EM me m e em O' NOTES: e
I VISUAL CLASSlFICATION OF SolLS ,ogisc go, gn a PAGE / OF / P2OJECT No.: W900/ A PROJECT NAME: C P + t. Bru.n s.,> <cle i% t ELIVATION: 2/.7 LOCATION: ENGINEER / GEOLOGIST: A/4 /pd,, GWL: DEPN DATE/ TIME DATE: 2/4 /9'f l l DRILUNG CO.: R, (4 //,a # /ss/s DEPTH DATE/ TIME DATE STARTED: /yfof DRILLER: '[, //;of 3 M /71,'//fr CASING SIZE / DEPTH: / DATE COMPLETED: l DRILUNG METHODS: l2 '/z le //4,. / Asv4ers DATE BACKFlLLED: a: g B@D gtn n E @n E m = ^h $ h 5" EE EM REMARKS o2 8 DESCRIPTION w gR dt-W- g N5 <m-m m o u l loose brou-h L ee4 - fi,e 9 ro.*e/. sand, /i,es dow-wud son.e fe hace s //y e/q 3_ g tecse h med, dwe green grey ~,} 1 s,w, +,a ce cia,, net MB m e WI giu '7. o /O - SND or Ben siv4 W W M MG eius es me eut en N W W W emi en e smu Emu e em mud uG W14 6 6 m W me aus em W W W eB dum e seh e eip M W W nsID esq eux edD Shu Gud e dus W 6 6 W e NOTES:
7 VISUAL CLASSIFICATION OF SOILS PAGE / OF / PROJECT NO.: W 804/4 PROJECT NAME: d # */ Bru.,,3.,,, c i r / % /- l ELEVATION: 2/,4, LOCATION: ENGINEER / GEOLOGIST: /. Mn/ peri,, GWL: DEPTH DATE/TlWE DATE: t'/z s/' g l DRILLING CO.: 2, ( //,',, <- As s /s DEPTH DATE/ TIME DATE STARTED: DRILLER: 7~, C/4 /,n e rs CASING SIZE / DEPTH: / DATE COMPLETED: DRILLING METHODS: J n iri Au/ amprs /o 7// 99y' //54 4 - / 7. 5//. DATE BACKFILLED: h D d gn >n n f , _b DESCRIPTION REMARKS 4 + a y m o /oppe 40 ined. S/t$ ihers ~ fno. sed M si/// elay ~ ~ %S _g-I l*ose y'etn 0 <er h dad pay ~ ~ 20 W 7~ # "'b A f " b N*I* .S'i//, ser.e o freet clay, we st WT .mp I deumes.rs doer w/ dep-/A ~ ~ frus;/in/ A,
9. S
~ ~ /O -
l. dense grey 4 row- /*,,a p<w </
~ ,y ~ ~ S2, is j,3 ,,,j,, p y l ~ J (2. S' ~ l ~ ~ eso or soa rm l j b, j i l I i j ( NOTES: '~~ [' 6 6 w M-,oe4 e,%. -6 mase6 = e eM O
VISUAL CLASSIFICATION OF SOILS ,,,,, g o, gss f3 PAGE / OF / PROJECT NO.: 7t/8M/4 PROJECT NAME: /' / v g 8ra e,g w,c/c ELEVATION: /9, // LOCATION: l ENGINEER /GEOLOGtST: 4. M /pgr/a CWL: DEPTH DATE/ TIME DATE: 2/4/f[ DRILUNG CO.: R Caf/,, v/,,f DEPTH DATE/ TIME DATE STARTED: jg,yf DRILLER: I M/,,f3 y, /E //fr CASING SIZE / DEPTH: / DATE COMPLETED: // f t's~ DRlLUNG METHODS: A/o/ /h4se; - J '/z /,, DATE BACKFlLLED: k $^ >^ b S ^ E DESCRIPTION REMARKS a h-w- a u m a u loose A med. dtM6 inIerlayed brow,, k ~1 ~ ~ grey aud e /f, s/ dnp y l [1< ") _ fa _ ~ ~ /V f ~ ~ /[~ med. dense /*ph/ rey Jash v/f if f f ~ ~ ~ med, c{ersSe darc gr#f
t. $< s e soft
~ ~ ~ Wik Cearser htlGu ~ lYO _ g g.. fND t r J u i^'4 J NOTES: i
VISUAL CLASSIFICATION OF SOILS i BORJNG NO. US-I M PACE f OF 2 PROKCT NO.: @d MOO / /Q PROKCT NAME: C. P ( /_ I'd RUN 5 tx>t c K. P a w T-ELEVAT10N: LOCATION: g E 4 /< Z/v D7 /<& CA A/M L_ ENGINEER /CEOLOCIST: r Ogsrepp CW DEPTH DATE/ TIME DATE:
g. - 4.~ T T ORtLUNG Co.: g, C4U.'M / MS50C, DEPN DATE/WE W E STARTG:
Qlg am DRILLER. '7~ d d A uH EK.S CASNG StZE / DEPTH: / DME COMPLETED: /,; 3o p/g DR!L1JNG METHOOS: /Jeo ducert.,o, He'.440-Tre7H 4t/4cKS, /Muo -//arriAy DATE BACKFu t rn: m g wE BE^t ^ BW w@^k. I gwe E g k. kw. l% 8 DESCMPM 8Q g{ REMARKS 9 m-E q a - /O - NOTES. SoA t N G D Ril.L E D W s TH 00 7" Cr+M PU^1G 70,50 W KefeK m 4OG FOK klo/4I hlG GS5 - / 3 C. 15AM P ts 5 f/CM 30 P7". 70 45' F7~,4g,E citon1 H oLM D - 577.=^1 /IVKGR i3c) KIN G e4 Hic H tx)A S ASANO. Fon se 13otsac cen LLe's wind muo -toWx.Y udsenpLeo 70./ S~fr o4NO Cotn PLCrerO TO APPA0X. SL. 5 F=Y".
r VISUAL CLASSIFICATION OF SOlLS 90 Rih *G NO. E55-/ B/S 4 i PACE S OF 7 PROJECT NO.: 94$OC/M PROJECT NAME: CP ( /_, Sgt/NSWlCE RAvT-ELEVATION: LOCA110N: Af g 4g TN7n gg dofv4 c ENGINEER /GEOLOGST: '7-~ ()gs, vi f CWL: DEPTH DATE/ TIME DATE: 4.4._95 ORlWNG CQ.: M C47Z.fN / A ssoc. DEPTH DA1E/ TIME BME STARTED: (f g5'M ORllifR / ~ CH ALM E(3 CASINC StZE / DEPTH: / DATE COMPLETED: gg 3o f:)/g DRllijNC METH00$: M4No 4ve.6N.5, /-lot.cous "Srt*7H Aucsts. / MOO-M74pt y' DATE BACKF1 LIED. jg [ E^ S$ ^ w h k DESCRIPTION M REMARKS E w-a u m a v
Mt CRAY 3tLYY /~tNG TO 3.(
20 onorec0 /ne-o. %)O cAAconc ru santPLc S crbrwrJe17 GKAY SILT' AN D Pt N L= przom pou.ouj ~ 04NN 3 Srzini /Sud LOC -3s_ Bu rConc,, ult 4 5 Cid f2 - 2 G K4y fi+1G~ 9t L 7Y 'WND A)f53 W S$GQU V Y - 5b 2.0 TO SANOV SIL T~ A f3A N W E b VGXM UJET y 1 2 y, o Gr2.A Y P!NE CLAVeN - $.3 ,,g ~ 5 4 AIO TD s4NOV Cf.AV ^ nfot S r- ~ pso 7:so - S-4 f.o j ; c,u r-ciz py fing pp, ,g 7"O COAK58 5A%70 AMO A r.:,:Tn c e* i' HOLG - '" ' TH rnv0 Kornny. ] 206t c Fi^) E G/k/67, Wer -g-4 ~ ~ Coallse rnnis t'snc. ~ ~ ~ gG 7t/KN/ NG / ^) ~ ~ ~ 12V& I Lt t NC n' Vb ~ - 65_- Be770 m of r30s. SNG. e %.Spr E e gi.e NOTES:
VISUAL CLASSlFICATION OF SOILS ,omso no. pss-i'3c. PAGE / OF / PROKCT No.: %800 / A PRORCT NAME: Cp q f. /3KuNwicr. fE.A^n~ ELIVAT10N: LOCATION: A/g,4 R INg ge-dAg,o c, ENQNEER/CEOLOQST: 7"t9jvs1o77-C M.: DEPTH DATE/VME DATE: 4-3-M DRILUNC CO.: & @m y / 453oc. DEPTH DATE/tWE SME STARTED: /2: 1 o Pm DRiu.ER: 7 dynLMd7LS CASNG SIZE / DEPTH: / BME COMPLETED: /:/6 PM DRILLINC METHODS: $& o ^) }},+MD Agc g;ts,.{ '/4 in, ~['b JM r nu) ws DATE BACKFILLED: b N k h DESCRIPTION REWARKS E o-w- a n w a o B xo u)4, Tnst f cany ~ /=~itJG StLTV st%)D ;~O 3/h/!=Y 2(t r ty1LtyAhiKiD g -. He^Jo AvceT.co St, $,4 , ggy ,D 6TM 7 7 1 D RILc r a Lot 7'M ~ l A '4 in.C D, ~ IO - TAN 7v R 4cwM 3.j ,,3-H cLLc tA) - 3rna M Sit.7y fisie sAno SLi s t47'Lv bAm p 140c er~~gr ~ ~ ~ guaeveco 70 -p.5-C AA Y fmv snovrov 2cr ^ >+ ID ws ra SHeu. FMC,, wG r ~ n orrem er nortsNG - 27Fr NOTES: SPLITL f3 4KRt7.- B o4 /M PL61C IMCPPEO OW PUSHED TO O>$74/rJ GAnsP(A~~
r I VISUAL CLASSlFICATION OF SOILS du /v goniac go, PAGE / OF / PROJECT NO.: '9t/604/A PROJECT NAME: C 8/ Z Bru,e s w < 4. /b # ELEVATION: /9. Y LOCATION: ENCtNEER/ GEOLOGIST: A, /4 /s,;,, GWL: DEPTH DATE/ TIME DATE: '//24/9f" D%iLUNG CO.:,2, (4 ///,, e A, 3 /3 DEPTH DATE/ TIME DATE STARTED: DRILLER: T t' /4 /m e, s CASING SIZE / DEPTH: / DATE COMPLETED: i DRILUNG MFTHODS: J %. i, Aa,,/ %,,3 4 J' te Vy /d NSA 6 / 20/r/ DATE BACKFILLED: 5 8 I ga-m 80 E d h 3 " C ob ' df I" Wh S$ REMARKS DESCRIPTION M w o n. L o 8 g$ 83-e-g 6-25 1 m m a o Are me r e.l u hal< base
~~s. e thed, derrse ud brou o :,lly sud l~~
.:/. in c e s f q l \\ $~ - l l - /0 - I y, p 1,( y,(, - l w., /..,. - -, s. ., o io,a ye, q, yeaan*/ sud l - /f - 1 2^ W, /,4 l ~ -go-WT - 93 %r 2.0 1 3 ?? O Epo or /3 ca' m 4 l l NOTES: -3 J
f~ i )}, VISUAL CLASSlFICATION OF SOILS BORING NO. b 5 /I f PAGE / OF / \\ 99886// PROJECT NAME: C#*4 3r u r. w s e/c. 8/h /- j / PROJECT NO.: ELEVATION: /9,t/ LOCATION: y ENGINEER / GEOLOGIST: /l, //a /per m GWL: DEPTH DATE/ TIME DATE: DRILUNG CO.: g. & f//n c As s /s DEPTH DATE/ TIME DATE STARTED: DRILLER: 7 C44/mer3 CASING SIZE / DEPTH: / DATE COMPLETED: DRILUNG METHODS: J'4 en 44,,/ u.,,j e6 8[e', f'f,r /d //5,4 C 6 /gg DATE BACKFlLLID: 6 8 N gae b- ^ @U m h ! k, No DESCRIPTION REMARKS w o o sa-W- WE m m a U /2a ve m e / ed c.shble base
~~o. 7~~
~ ~ /heda dense Jo loose 7eey do brou ~ l ~ ~ /,'s,e S.s-d,.s o m e 2*// s/ poof loose dan es../ red brown _[_ rn o ttle/ / 7,*.s a~/ s/. n o rs + ?O \\ Loose /ogh/ grey to /// /es Ja~l p ois t l _,9 - /D.o ' Iv f $j g'g loose. red 6 row, si/fy -llu sa./ t some 'lhin beds of' si//7 c/s.y l we f /3. 0 loos a grey green at //7 sus { _g- ~. t. 22 2.0 ,L / 7. 0 l END cf B ea tn4 l _~ l l NOTES: l 1 l
I BORING NO. 655 /% VISUAL CLASSIFICATION OF SOILS PAGE / OF / l l PROJECT NO.: 'f YF06/,4 PROJECT NAME: dP74 Br,.,,u<<4. // d l ELEVATION: /9,J LOCATION: ENGINEER /CEOLOGIST:,4, /da/pr/,, CWL: DEPTH DATE/ TIME DATE: 9/24/ff DRlWNG CO.: R 61/r, e ds s /s DEPTH DATE/ TIME DATE STARTED: DRILLER: 7 ( 44 /,.,,es CASING SIZE / DEPTH: / DATE COMPLETED: DRlWNG METHODS: J '2 /34,id a,,pers f / [/. y//y //5,4 C - 2 f 4 DATE BACKFILLED: / E d U gMm >" a m O m h h E DESCR!P110N REMARKS 4 w, n a u m 3 U Vstver e,n r + u e b / c tu s t o.B Dense ral b ra s.s-4L a,Ily s l, s l. n. a s + -g- - /0 31 3'go /.C er ~ i //~C i - / f -- '7 penu a'u L bro *- +< y < y _ gg 33,34,,y -/' n e. Sa.md, itae< /* 3.* ~
~~s.'/ /~~
~~y, rn a a s t ~ 20 - - $3 ,,3~~
32
/,9 2S f // 4 br rs ^'2f h: _ g g,, - 2r - med. olemse -Ma*- + i,, 4 rks/de/ ~ Y */Y 20 b ro- + dal y *z,,b,r*yg, g y_, -}~_ ~ ~ SV ,s ' l ~. - rsvo or pocon4 NOTES: j \\ q >=AmI 1 1 f .E j
r 4 i l APPENDIX B LABORATORY ANALYTICAL REPORTS 1 i
r / Cp&L m To: Mr. Charles K. Ross From: D. F. Cahill Date: April 10,1995
~~Subject:~~
Tritium Analyses of BNP Groundwater Samples This is a summary report of the tritium analyses of the six groundwater samples you A 'ivered to the Radiochemistry Laboratory on April 6,1995. The samples were analyzed in accordance with our Procedure LS-ER-1. This involves the addition of sodium hydroxide and potassium pennanganate to 50 ml of the water sample to prevent the i canyover of volatile nuclides during distillation. 'Ihe first 10 ml of distillate are discarded and a 5-mi aliquot of the final distillate is mixed with 13 ml of Ultima Gold liquid scintillation cocktail mix. After dark adaptation for > 1 hour, the samples are counted in a liquid scintillation counter. The results of the analyses are: RCLID Sample ID H-3 Acthity (nCi/D 951243 ESS-3B < 8.68 E*2 951244 ESS-28 < 8.68 E+2 951245 ESS-13C < 8.68 Et2 951246 ESS-1B < 8.68 E+2 951247 ESS 2C 4.67
~~0.12 E+4 951248 ESS-13B~~
< 8.68 E+2 When activity was initially detected in sample ESS-2C, :wo additioni 30-ml aliquots were distilled and counted to confum the presence of tritium activity in that sample. If you have any questions. please centact me at 362 3499. ptY: b W DFC/dj crritrasur; c: Mr. L. H. Martin
r-o Cp&L AM
~~m M.h To:~~
~~Mr. Charles K. Ross 3 From: D. F. Cahill Date: April 13.1995 / l~~
~~Subject:~~
Analyses of Resampled BNP Groundwater Well 2-C i Two samples of groundwater from Well 2-C at BNP, collected on April 11,1995, were received on April 12 for tritium and gamma activity analyses. Duplicate samples were filtered and prepared for tritium analyses; the 1-liter Marinelli beaker was counted for gamma activity as received. The results of the analyses are: RCLID Sample ID H-3 Activity (nCi/h 951295-A ESS-2C 4.8710.12 E+4 951295-B ESS-2C 4.90 0.12 E+4 i RCL ID Samele ID Gamma Activity (oCi/D 951296 ESS-2C All gamma activity < LLD; Co-60 < 8.1 pCill i S. [ W/ DFC/dj tomeweic)
r lc Cp&L l i N h To: Mr. Charles K. Ross From: D. F. Cahill 2 Date: May 3,1995 l
~~Subject:~~
Tritium Analyses of BNP Groundwater Samples j i This is a summary report of the tritium analyses of the seven groundwater samples collected at BNP on April 27,1995. The samples were analyzed in accordance with our Procedure LS ER-1. This involves the addition of sodium hydroxide and potassium permanganate to 50 ml of the water sample to prevent the carryover of volatile nuclides during distillation. The first 10 ml of distillate are discarded and a 5-ml aliquot of the final distillate is mixed with 13 ml of Ultima Gold liquid scintillation cocktail mix. After dark adaptation for > 1 hour, the samples are counted in a liquid scintillation counter. The results of the analyses are: RCLID Samole ID H-3 Activity (oCill) 951454 ESS 12C < 9.28 E+2 951455 ESS-3C < 9.28 E+2 3 951456 ESS-2D < 9.28 E -2 951457 ESS-16 3.49 0.11 E+4 951458 ESS-15 < 9.28 E+2 1 951459 ESS-14 < 9.28 Et2 951460 ESS-SC < 8.88 E+2 The activity reponed in sample ESS-16 is the average for three analyse.;. If you have any questions, please contact me at 362-3499. i Md 6 L v-DFC/dj (Tnw.BNP) j c: Mr. L. H. Martin l l j
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~~"# ETA, OT~~
-~ C N Ar IATit l ,# g, May 18, 1995 Post it brand fax transmittal memo 7s71..r, , 3 D}Y fek %vw ~*b. 'J} gy ]50l-'II W R.P/sNaf o o-Report Nos.: 50-325/95-11 and 50-324/95-? o., Licensee: Carolina Power and Light Compal e.,7/C-3fC-apoq Fox a P. O. Box 1551 Raleigh, NC 27602 Docket Nos.: 50-325 and 50-324 License Nos.: DPR-71 and DPR-62 Facility Name: k Nuclear Power Plant Inspection Conducted: April' 17 '21, 1995 \\ Inspector: /, 5~ 7 ff R. P. Carrion, Radiation Specialist Dat'e Signed j S ' /7!f_S Approved by: G4 T. R. Decker, Chief Date 51grfed Radiological Effluents and Chemistry Section Radiological Protection and Emergency Preparedness Branch ~ Division of Radiation Safety and Safeguards
~~SUMMARY~~
Scope: This special, announced inspection was conducted in the areas of the chemical decontamination of the Unit 1 Recirculation System, the licensee's Hydrogen Water Chemistry (HWC) Program, the licensee's Zinc Injection Program, the Control Rod Blade (CR') Pins and Rollers Changeout, the leakage of the Unit 2 Radwaste Effluent Discharge Line, and the Low Lovel Radwaste (LLW) Storage Contingencies. Results: The licensee's chemical decontamination was ultimately successful. The staff of the Chemistry Department was viewed as a licensee strength (Paragraph 2). The licensee was proceeding in an appropriate manner to determine the optimum hydrogen injection rate to protect major plant components from Intergranular l Stress Corrosion Cracking (IGSCC) (Paragraph 3). l The licensee's technical evaluation of the issue of zine injection was well done (Paragraph 4). l
5 surface to allow a clear view of the operations below, was sucked into a skimmer and lodged in the skimmer surge tank for fuel pool cooling. The viewing window was recovered and there no damage to any instruments or pumps associated with the skimmer surge tank. However, the licensee began a root cause analysis of the event and would r.ot resume work until the analysis was complete. By the end of the inspection, the analysis had not been completed. The inspector concluded that the licensee was appropriately recovering from operational events to assure plant safety. No violations or deviations were identified. 6. Leak of Unit 2 Radwaste Effluent Discharge Line (84750) The inspector reviewed the issue of leakage of the Unit 2 Radwaste Effluent Discharge Line. (Refer,to irs 50-325,324/94-35 Paragraph 10). In May 1994, the licensee had performed a pres:urized hydro test of a section of the referenced line which had been repaired in July 1987. The test indicated that a leak was present because the line could not' retain the pressure of the water. The line (a three-inch diameter concrete-lined pipe) was " sleeved" using a material developed by Goodyear for this purpose (and often used in other industries, such as. petrochemicals) to extend the working life of pipes. From the source inventory, the licensee determined that tritium would be the only radioisotope with sufficient mobility to pose any potential 3roblem whatsoever. The path of migration of any tritium which may lave leaked from the line into the surrounding soil was the licensee's concern. Therefore, the services of a consultant were enlisted to study the question. The consultant's report indicated that the probable horizontal hydrological flow paths would carry any such liquid to the plant intake canal or to the plant discharge canal. In either case, the leakage would be returned to the plant and processed like other raw water for plant operations (in the case of flowing into the intake canal) or it would eventually flow into the discharge canal (its original destination) where it would be diluted even more by the large volume of water there. One other flow path was hypothesized, a downward vertical path to a relatively-porous strata of dense sand (the Yorktown Formation) and a horizontal migration from there to the licensee's property line. Even with the most rapid migration of the plume, it was estimated that several decades would pass before it got to the licensee's property line. Also, dilution of the plume from other underground water sources would be substantial. Therefore, these factors would attenuate whatever nominal radioactivity which may have originally leaked from the discharge line by several orders of magnitude, to below detectable limits, before contact with off-site receptors.
To verify the conclusions of the study as part of its corrective actions, the licensee established and presented to the State of North Carolina in January 1995 a groundwater assessment program. The plan called for: A determination of groundwater flow (both horizontal and vertical) directions and gradients by the installation of piezometers around the protected area measuring the piezametric surfaces relative to mean sea level (MSL). 1 A determination of the adequacy of the position of existing monitoring wells to intercept any tritium in groundwater that may migrate from the protected area. A determination for additional monitoring wells based upon the above assessments. A determination of the extent (vertical and horizontal) of tritium contamination by the collection and analysis of samples. In February 1995, fifteen piezameters were installed to study groundwater flow. The data indicated that the near-surface groundwater flow was found to be toward the Intake and Discharge Canals, as expected. The flow in the deep layer (Yorktown) was found to be I eastward, toward the ocean. Based on these findings, it was recommended ^ that three additional monitoring wells be installed and that monitoring for tritium be done at six selected wells. I In early April 1995, samples were collected from the six wells and analyzed. Only one well showed detectable tritium activity of 4.5E-5 microcuries per milliliter (pCi/ml). This result was confirmed with a followup sample. As a result, the licensee planned to install seven additional sampling wells in areas of backfill of the cooling water discharge tunnels, believing that the tritium may be confined to those backfill areas. The licensee planned to take and analyze groundwater samples as soon as these new wells became available. The inspector concluded that the licensee had taken appropriate action in response to this event. No violations or deviations were identified. 7. Status of Brunswick Low Level Radwaste (LLW) Storage Contingencies (86750) The inspector requested an update on the contingencies being pursued by the Brunswick management with respect to LLW long-term on-site storage and discussed those with cognizant licensee personnel. Detailed plans of various alternatives had been developed. The licensee planned to use concrete storage containers (with a steel liner) on a concrete pad. The primary location was the existing slab of the second uncompleted cooling tower while the old Solid Debris Dump was a secondary location. While
4* a-m... c.c.i .;. g ;.i I ',a i l s ( .t TS 171993 ' ii.*l. State of North Carolina Department of Environment, Health and Natural Recources ~ Division of Environmental Management 512 North Salisbury Street
~~Raleigh, Nonh Carolina 27604 James B. Hunt,Jr Governor Jonathan B. Howes. Secre:ary February 15,1993 George J. Oliver.~~
~~P O Box 1551 Raleigh,NC 27602 Subject Permit No. NC0007064 Carolina Power & Light Co. Brunswick Steam Electric Plant Brunswick Caumy~~
~~Dear Mr. Clier :~~
In accordance with your application for discharge permit received on September 25, 1991, we are forwaring herewith the subject state - NPDES permit. This permit is issued pursuant to the requirements of Nonh Carolina General Statute 143-215.1 and the Memorandum of Agreement between Nonh Carolina and the US Environmental Protection agency dated December 6,1983. If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following receipt of this letter. This request must be in the form of a written petition, conforming to Chapter 150B of the Nonh Carolina General Statutes, and filed with the Office of Administrative Hearings, Post Office Drawer 27447. Raleigh, North Carolina 27611 -7447. Unless such demand is made, this decision shall be final and binding. Please take notice this permit is not transferable. Part II, E.4. addresses the requirements to be followed in case of change in ownership or control of this discharge. This pennit does not affect the lega1 requirements to obtain other permits which may be required by the Division of Environmental Management or permits required by the Division of Land Resources, Coastal Area Management Act or any other Federal or Local governmental permit that may be required. If you have any questions concerning this permit, please contact Mr. Randy Kepler at telephone number 919D33-5083.
~~cucly, NHow' Jr.~~
Acting Director cc: Mr. Jim Patrick, EPA Wilmington Regional Office Polhaion Prevendon Pays P.O. Bax 29533, Raleigh, North Carolina 27626-0535 Telephone 919.733 7015 An Equal Opportumry Afvmative Acnon Employer
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b 6 rd a e 0 ae t s t a r i l s g 7 hf u u a ) ci o X s c g. e w y b X ie e e n dp R f O t l a o n s p tn s e o e mn abb e i N t s u da ay aa c l t s r r r l o ee ST ze nGG u e N i a o e i t t wi D s h t nm d t i r m i t r e d. t r ue Rta h i a l u e ap t laa o l h P se f t h nmy h r n i c t et h a n ly i e o i ey r a ly ly lyl w m m a r / t b u u k k k u g f 2 l o l t i a a eee n n s d a md a e eee i n e f n x t r n WWWA im t t a r u r e e o F r o eni o r i o Pt M n n o o a t h o f m e r t,m o od i d c n e e o rp s b n u e i a n l h t k ly l t a e a rd n h t i pt a o s a e xi m d s t em e m n tn b a u L l i l l l c s o o l i x / / t e l m A n a gg a N u M mm h e it b n a s s u l I gl s o e F a nh p e h d c 00 t r i t s g) y v a S a vl 0 o s r s l T d t a s l e aia 00. b a f i n N t a l 1 2 h a a g l cD E dr l e d c ts h na mp t e u M ah s 0 r t l L (S i s 9 h s e E t c is R ni l d t s n n o nd I t U eh e n u a Q pc g e o h in t u r s m p m r S at e m e E e a h t hn g. ir o t o i R u c a nU y q ly g l f e f s G oe a r A e e l 1 i N er D gg e i c /1 r n b r I t u o s g h mm i ip n i a R do y n v O S l 00 o b s r r i e a T ve i d i o t t n D 05 n I t i e u s t s N 31 o ca d t fW m a d i O e M e in r lo f a s r ee h l d o n g D em h a n t h u h c A n o i ly s i t N t t l t a w o o oV p 0 l f S e 6 f f N gw c o n o n n o ha O nL s i E e e i a g g T n p lp n a s a I t r r ll m i h s h i o A g5 a s o c l c e0 d i c it e T b 0 a ly s s d i is IM dr l in n d e d oe s a o b c o o ib n s n n n o n I t L r d l, a l A e i b l b t i k l e n e em T pu h So a l t N en c n r l la t t a E hl d a s a l h l a t a e e P h s t h U gi d eu lp s t s r sl L ne n l m e i i s e ao e e p e T r prep a r r S e e e u )s sG S I t u h h h E Dl( n y T T T e Sd l t a u ni O f wl a o r i a tu l lot l l i oir A o E FTOP
se m en it o s l e m m i t s t s m a a o t r R f a c w R S o e :w m* L g 4 g 6 r a n 0 a o t in l l 7 h e u a cb e )X s s X id e lc de R e l O a i i of n e t N c m n e t i r de y m e .o ep aI t f a zs S o w N a ir s oa n w f t n e i o o g i h r l s n ue o t f n t e at i e e ig n t t n e h c r i P sn r a y t o m u h in c e e Me g o c n n s s tep r i t e iy r d ie u u lp e o s e l t mh t a 'e it h t ey e r u o r r o F m h Pp M ed y it i rp w h e b t ,o d g n t r ni e n e t on n i m x io im i e m g tam r a r e o n i t pd e a t M x n d r o e a i l y r L ld i p a t i I I l l t t e x I I / / n n n t A ni a gggg a e t e N um M mmmm u k m gi s q a n IF l t n n o ie e r b o h e i S t ) y b v T vl 0000 n s l t al l i N a ai R d l E l f l l e a l c D 001 1 E dh l ns e 02 e h f M as lmn o c s 1 x S e e n E e L t g ( v o i R nr o o i t H na n b isv L eh e a iD Q pc g la d l s r s e e E ed at h t h i s h hi R s h n2 i t t s l y f c sUY G ou l e s b I A l l l l t t N eS D gggg a I I / / s ne d I t mmmm w m ve R a. ds y O e l g e o i r r et a n i p T v a D 0000 in s uq p I i N cW a 051 1 e a t e O e 31 l r e f g c f g b M n n l ei t i l a D e n r l a e o a h m i h t N e n s t l A nC n o s m e ol i S t gt d s a h N e i w ne g t a O w iM n s ra I n c g h e T i n i t c c in A g6 i id lp l s s n e0 a T b 0 e i a r e I s s. M dr t c oe c n n m l t b a s a o o a I i L r d r i t i c em t t a l lua e T pu h lot in m o r S n N en C pe n r E hl d f c e o t a e f U gr d e on k i sr o a g L ne n i s e ae yc t n prep it i F r pn n e s r t F u )s sGoo o u a v e t t ( n E Dl e SdCt u o lp i r nl qb m o r l ) a u l aa la a M a ( f i a e t l t l t t u l oioo h e S .A o E TOTT Tt h
f ~ PARTI I i Section B. Schedul-of Comnlisnce
~~1. The permittee shall comply with Final Effluent Limitations specified for discharges in accordance with the following schedule:~~
~~Permittee shall comply with Final Efnuent Limitadons by the effective date of the permit unless specified below.~~
~~2. Permittee shall at all times provide the operation and maintenance necessary to operate the exisdng facilities at opdmum efficiency.~~
~~1 l i~~
3. No later than 14 calendar days following a date identified in the above schedule of compliance, the permittee shall submit either a report of progress or, in the case of specific actions being required by identified dates, a wntten notice of compliance or noncompliance. In the latter l
case. the notice shall include the cause of noncompliance, any remedial acuans taken, and the probability of meeting the next schedule requirements. l
{fgL dCDO6 W Part 11 Page 1 of 14 PARTII i STANDARD CONDITIONS FOR NPDES PERMITS i A \\ SECTION A. DEFINITIONS
~~1. Permit Issuing Authority~~
~~( The Dimetor of the Division of Environmental Management.~~
~~2. DEM or Division l~~
~~l Means the Division of Environmental Management, Department of Environment, Health and Natural Resources. 3.EMC Used herein means the Nonh Carolina Environmental Management Commission.~~
4. Act or "the Act" The Federal Water Pollution Control Act, also known as the Clean Water Act, as amended,33 USC 1251, et, seq.

5. Mass /Dav Measun ments

a. The " monthly average discharge" is defined as the total mass of all daily discharges sampled and/or measured during a calendar month on which daily discharges are sampled and measured, divided by the number of daily discharges sampled and/or measured during such month. It is therefore, an arithmetic mean found by adding the weights of the pollutant found each day of the month and then dividing this sum by the number of days the tests were reponed. The limitation is identified as " Monthly Average"in Pan I of the

permit,

b. The " weekly average discharge"is defined as the total mass of all daily discharges sampled and/or measured during the calendar week (Sunday - Saturday) on which daily discharges are sampled and measured, divided by the number of daily discharges sampled and/or measured during such week. It is, therefore, an arithmetic mean found by adding the weights of pollutants found each day of the week and then dividing this sum by the number of days the tests were reported. This limitation is identified as " Weekly Average" in Part I of the permit.

c. The " maximum daily discharge" is the total mass (weight) of a pollutant discharged during a calendar day. If only one sample is taken during any calendar day the weight of pollutant calculated from it is the " maximum daily discharge." This limitation is identified as " Daily Maximum," in Pan I of the permit.

d. The " average annual discharge" is defined as the total mass of all daily discharges sampled and/or measured during the calendar year on which daily discharges are sampled and measured, divided by the number of daily discharges sampled and/or measured during such year. It is, therefore, an arithmetic mean found by adding the weights of pollutants found each day of the year and then dividing this sum by the number of days the tests were mponed. This limitation is defined as " Annual Average"in Pan I of the permit.
~~~, Part II Page 2 of 14~~
6. Concentration Measun ment

a. The " average monthly concentration," other than for fecal coliform bacteria, is the sum of the concentrations of all daily discharges sampled and/or measured during a calendar month on which daily discharges are sdnpled and measured, divided by the number of daily discharges sampled and/or measumd during such month (arithmetic mean of the daily concentration values). The daily concentration value is equal to the concentration of a composite sample or in the case of grab samples is the arithmetic mean (weighted by flow value) of all the samples collected during that calendar day. The average monthly count for fecal coliform bacteria is the geometric mean of the counts for samples collected during a calendar month. This limitation is identified as " Monthly Average" under "Other Limits" in Part I of the permit.

b. The " average weekly concentration," other than for fecal coliform bacteria,is the sum of the concentrations of all daily discharges sampled and/or measured during a calendar week (Sunday / Saturday) on which daily discharges are sampled and measured divided by the number of daily discharges sampled and/or measund during such week (arithmetic mean of the daily concentration values). The daily concentration value is equal to the concentration of a composite sample or in the case of grab samples is the arithmetic mean (weight d by i
flow value) of all the samples collected during that calendar day. The average weekly count for fecal coliform bacteria is the geometric mean of the counts for samples collected during a calendar week. This limitation is identified as " Weekly Average" under "Other Limits" in Part I of the permit,
c. The " maximum daily concentration"is the concentration of a pollutant discharge during a calendar day. If only one sample is taken during any calendar day the concentration of pollutant calculated from it is the " Maximum Daily Concentration" It is identified as
~~" Daily Maximum" under "Other Limits" in Part I of the permit.~~
d. The " average annual concentration," other than for fecal coliform bacteria, is the sum of the concentrations of all daily discharges sampled and/or measured during a calendar year on which daily discharges are sampled and measured divided by the number of daily discharges sampled and/or measured during such year (arithmetic mean of the daily concentration values). The daily concentration value is equal to the concentration of a composite sample or in the case of grab samples is the arithmetic mean (weighted by flow value) of all the samples collected during that calendar day. The average yearly count for fecal coliform bacteria is the geometne mean of the counts for samples collected during a calendar year. This limitation is identified as " Annual Average" under "Other Limits" in Part I of the permit.

e. The " daily average concentmtion" (for dissolved oxygen) is the minimum allowable amount of dissolved oxygen required to be available in the effluent prior to discharge averaged over a calendar day. If only one dissolved oxygen sample is taken over a calendar day, the sample is considered to be the " daily average concentration" for the discharge. It is identified as " daily average" in the text of Part I.

f. The " quarterly average concentration" is the average of all samples taken over a calendar quarter. It is identified as "Quanerly Average Limitation"in the text of Part I of the permit.

g. A calendar quarter is defined as one of the following distinct periods: January through March, April through June, July through September, and October through December.
~~Part II Page 3 of 14 '. Other Measurements -~~
a. Flow, (MOD): The flow limit expressed in this permit is the 24 hours average flow, averaged monthly. It is determined as the arithmetic mean of the total daily flows recorded during the calendar month.

b. - An " instantaneous flow measurement"is a measure of flow taken at the time of sampling, when both the sample and flow will be representative of the total discharge.

c. A " continuous flow measurement" is a measure of discharge flow from the facility which
- occurs continually without hierruption throughout the operating hours of the facility. Flow shall be monitored continually except for the infrequent times when there may be no flow or for infrequent maintenance activines on the flow device.
8. Tvoes of Samples

a. Composite Sample: A composite sample shall con :st of:
(1) a series of grab samples collected at equal time intervals over a 24 hour period of discharge and combmed proportional to the rate of flow measured at the time of individual sample collection, or (2) a series 'of grab samples of equal volume collected over a 24 hour period with the time intervals between samples determined by a preset number of gallons passing the sampling point. Flow measurement between sample intervals shall be determined by use of a flow recorder and totalizer, and the present gallon interval between sample collection fixed at no greater than 1/24 of the expected total daily flow at the treatment system, or (3) a single, continuous sample collected over a 24 hour period proportional to the rate of flow. In accordance with (1) above, the time interval between influent grab samples shall be no greater than once per hour, and the time interval between effluent grab samples shall be no greater than once per hour except at wastewater treatment systems having a detention time
of greater than 24 hours. In such cases, effluent grab samples may be collected at time intervals evenly spaced over the 24 hour period which are equal in number of hours to the detention time of the system in number of days. However,in no case may the time interval between effluent grab samples be greater than six (6) hours nor the number of samples less than four (4) during a 24 hour sampling period.

b. Grab Sample: Grab samples are individual samples collected over a period of time not exceeding 15 minutes; the grab sample can be taken manually. Grab samples must be representative of the discharge or the receiving waters.

9. calculation of Means a Arithmetic Mean: The arithmetic mean of any set of values is the summation of the individual values divided by the number ofindividual values.

b. Geometric Mean: The geometric mean of any set of values is the Nth root of the product of the individual values where N is equal to the number ofindividual values. The geometric mean is equivalent to the antilog of the arithmetic mean of the logarithms of the individual values..For purposes of calculating the geometric mean, values of zero (0) shall be considered to x one (1).
~~Pm U Page 4 of 14 l~~
c. Weighted by Flow Value: Weighted by flow value means the summation of each concentration times its respective flow divided by the summation of the mspective flows.

10. Calendar Day 4
A calendar day is defined as the period fmm midnight of one day until midnight of the next day; However, for purposes of this permit, any consecutive 24-hour period that reasonably tepmsents the calendar day may be used for sampling.
~~11. Hmrdous Substance A hazardous substance means any substance designated under 40 CFR Part 116 pursuant to Section 311 of the Clean Water Act.~~
~~) i~~
~~12. Toxic Pollutant A toxic pollutant is any pollutant listed as toxic under Section 307(a)(1) of the Clean Water Act.~~
~~SECTION B. GENERAL CONDITIONS~~
1. Duty to Comolv The permittee must comply with all conditions of this permit. Any permit noncompliance constitutes a violation of the Clean Water Act and is grounds for enforcement action; for permit termination, revocation and reissuance, or modification; or denial of a permit renewal application.

a. - The permittee shall comply with effluent standards or prohibitions established under section 307(a) of the Clean Water Act for toxic pollutants and with standards for sewage sludge use or disposal established under section 405(d) of the Clean Water Act within the time provided in the regulations that establish these standards or prohibitions or standards for sewage sludge use or disposal, even if the permit has not yet been modified to incorporate the requirement.

b. The Clean Water Act provides that any person who violates a pennit condition is subject to a civil penalty not to exceed $25,000 per day for each violation. Any person who negligently violates any permit condition is subject to criminal penalties of $2,500 to
$25,000 per day of violation, orjmprisonment for not more than 1 year, or both. Any person w1o knowingly violates permit conditions is subject to criminal penalties of $5,000 to $50,000 per day of violation, or imprisonment for not mom than 3 years, or both. Also, any person who violates a permit condition may be assessed an administrative penalty not to exceed $10,000 per violation with the maximum amount not to exceed $125,000. (Ref: Section 309 of the Federal Act 33 U.S.C.1319 and 40 CFR 122.41 (a)]
c. Under state law, a civil penalty of not more than ten thousand dollars ($10,000) per violation may be assessed against any person who violates or fails to act in accordance with the tenns, conditions, or requirements of a permit. [Ref: North Carolina General Statutes 6143-215.6A]

d. Any person may be assessed an administrative penalty by the Administrator for violating section 301, 302, 306, 307, 308, 318, or 405 of the Act, or any permit condition or limitation implementing any of such sections in a permit issued under section 402 of the 1
Act. Administrative penalties for Class I violations are not te exceed $10,000 per violation, with the maximum amount of any Class I penalty assessed not to exceed $25,000.
< art U - Page 5 of 14 Penalties for Class II violations are not to exceed $10,000 per day for each day during which the violation continues, with the maximum amount of any Class II penalty not to exceed $125,000.
~~2. Durv to Miriaate 4~~
The permittee shall take all reasonable steps to minimize or prevent any discharge or sludge use or disposalin violation of this permit which has a reasonable likelihood of adversely affecting human health or the environment.
3. Civil and criminal 1iabilitv Except as provided in permit conditions on " Bypassing" (Part II, C-4) and " Power Failures" (Part II, C-7), nothing in this permit shall be construed to relieve the permittee from any responsibilities, liabilities, or penalties for noncompliance pursuant to NCGS 143-215.3, 14 3-215.6 or Section 309 of the Federal Act, 33 USC 1319. Furthermore, the permittee is responsible for consequential damages, such as fish kills, even though the responsibility for effective compliance may be temporarily suspended.

4. Oil and Hnwdous Substance Liability Nothing in this pemiit shall be construed to preclude the institution of any legal action or relieve the pennittee from any responsibilities, liabilities, or penalties to which the permittee is or may be subject to under NCGS 143-215.75 et seq. or Section 311 of the Federal Act,33 USG 1321.
~~I Furthermore, the permittee is responsible for consequential damages, such as fish kills, even though the responsibility for effective compliance may be temporarily suspended.~~
5. Pronerty Rights The issuance of this pemiit does not convey any property rights in either real or personal property, or any exclusive privileges, nor does it authorize any injury to private property or any mvasion of personal rights, nor any infringement of Federal, State or local laws or regulations.

6. Onshore or Offshow construction This permit does not authorize or approve the construction of any onshore or offshore physical structures or facilities or the undertaking of any work in any navigable waters.

7. Severability The provisions of this permit are severable, and if any provision of this permit, or the application of any provision of this permit to any circumstances,is held invalid, the application of such provision to other circumstances, and the remainder of this permit, shall not be affected thereby.
8. Duty to Provide Information The permittee shall furnish to the Permit Issuing Authority, within a reasonable time, any information which the Permit Issuing Authority may request to determine whether cause exists for modifying, revoking and reissuing, or terminating this permit or to determine compliance with this permit. The permittee shall also furnish to the Permit Issuing Authority upon request, copies of records required to be kept by this permit. l J
i Part II Page 6 of 14
~~9. Duty to Reanniv If the permittee wishes to continue an activity regulated by this permit after the expiration date of this permit, the permittee must apply for and obtain a new permit.~~
4.
~~10. Expiration of Permit The permittee is not authorized to discharge after the expiration date. In order to receive~~
- automatic authorization to discharge beyond the expiration date, the permittee shall submit such information forms, and fees as are required by the agency authorized to issue permits no later i than 180 days prior to the expiration date. Any permittee that has not requested renewal at least 180 days prior to expiranon, or any permittee that does not have a permit after the expiration and has not requested renewal at least 180 days prior to expiration, will subject the permittee to enforcement procedures as pmvided in NCGS 143-213.6 and 33 USC 1251 et. seq.
11. Sienatory Reauimments All applications, reports, or information submitted to the Permit Issuing Authority shall be signed and certified.

a. All permit applications shall be signed as follows:
(1) For a corporation: by a responsible corporate officer. For the purpose of this Section, a responsible corporate officer means: (a) a president, secretary, treasurer or vice president of the corporation in charge of a principal business function, or any other person who performs similar policy or decision making functions for the corporation, or (b) the manager of one or more manufruring production or operating facilities employing more than 250 persons or hang gross annual sales or expenditures exceeding 25 million (in second quarter 1980 dollars),if authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures. (2) For a partnership or sole proprietorship: by a general partner or the proprietor, respecovely; or (3) For a municipality, State, Federal, or other public agency: by either a principal executive officer or ranking elected official.
b. All reports required by the permit and other information requested by the Permit Issuing Authority shall be signed by a person described above or by a duly authorized representative of that person. A pIrson is a duly authorized representative only if:
(1) The authorization is made in writing by a person described above; (2) The authorization specified either an individual or a position having responsibility for the overall operation of the regulated facility or activity, such as the position of plant manager, operator of a well or well field, superintendent, a position of equivalent responsibihty, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named individual or any individual occupying a named position.); and (3) The written authorization is submitted to the Permit Issuing Authority. )
Part II Page 7 of 14 l l
~~c. Certification. Any person signing a document under paragraphs a. or b. of this section shall make the followmg certification:~~
"I certify, under penalty oflaw, that this document and all attachments wem prepared under my direction or supervision in accordance with a system designed to assum that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of 1 the person or persons who manage the system, or those persons dimetly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
12. Permit Actions This permit may be modified, mvoked and missued, or tenninated for cause. The filing of a request by the permittee for a permit modification, revocation and reissuance, or termination, or a notification of planned changes or anticipated noncompliance does not stay any permit condition.

13. Permit Modification. Revocation and Reissuance. or Termination The issuance of this permit does not prohibit the permit issuing authority from reopening and modifying the permit, mvoking and reissuing the permit, or terminating the permit as allowed by the laws, rules, and regulations contained in Title 40, Code of Federal Regulations, Parts 122 and 123; Title 15A of the Nonh Carolina Administrative Code, Subchapter 2H.0100; and Nonh Carolina General Statute 143-215.1 et. al.

14. Pmvious Permits All previous National Pollutant Discharge Elimination System Permits issued to this facility, whether for operation or discharge, are hereby revoked by issuance of this permit. [The exclusive authority to operate this facility arises under this permit. The authority to operate the facility under previously issued permits bearing this number is no longer effective. ] The conditions, requirements, terms, and provisions of this permit authorizing discharge under the National Pollutant Discharge Elimination System govern discharges from this facility.
~~SECTION C. OPERATION AND MAINTENANCE OF POLLUTION CONTROLS~~
1. Certified Ooerator Pursuant to Chapter 90A-44 of North Carolina General Statutes, and upon classification of the facility by the Certification Commission, the permittee shall employ a certified wastewater treatment plant operator in responsible charge (ORC) of the wastewater treatment facilities.
Such operator must hold a certification of the grade equivalent to or greater than the classification assigned to the wastewater treatment facilities by the Certification Commission. The permittee must also employ a certified back-up operator of the appropriate type and any grade to comply with the conditions of Title 15A, Chapter 8A.0202. The ORC of the facility must visit each Class I facility at least weekly and each Class II, III, and IV facility at least l daily, excluding weekends and holidays, and must properly manage and document daily operation and maintenance of the facility and must comply with all other conditions of Title 15A, Chapter 8A.0202. Once the facility is classified, the permittee shall submit a letter to the Certification Commission which designates the operator in responsible charge within thirty days after the wastewater treatment facilities are 50% complete. [
Part U Page 8 of 14
2. Pmoer Ooeration and Maintenance The permittee shall at all times properly operate and maintain all facilities and systems of tmatment and control (and related appurtenances) which are installed or used by the permittee to achieve compliance with the conditions of this permit. Proper operation and maintenance also includes adequate laboratory controls and appropriate quality assurance procedures. This provision requims the operation of back-up or auxiliary facilities or similar systems which are mstalled by a permittee only when the operation is necessary to achieve compliance with the conditions of the permit.

3. Need to Halt or Reduce not a Defense It shall not be a defense for a permittee in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the condition of this permit.

4. Bvoassine of Treatment Facilities

a. Definitions j
i
~~0) " Bypass" means the known diversion of waste streams from any portion of a treatment j~~
facility including the collection system, which is not a designed or established or operating mode for the facility. (2) " Severe property damage" means substantial physical damage to property, damage to the treatment facilities which causes them to become inoperable, or substantial and permanent loss of natural resources which can reasonably be expected to occur in the j absence of a bypass. Severe property damage does not mean economic loss caused by delays in production,
~~b. Bypass not exceeding limitations.~~
The permittee may allow any bypass to occur which does not cause effluent limitations to be exceeded, but only ifit also is for essential maintenance to assure efficient operation. These bypasses are not subject to the provisions of Paragraphs c. and d. of this section.
c. Notice (1) Anticipated bypass. If the pymittee knows in advance of the need for a bypass,it shall submit prior notice,if possible at least ten days before the date of the bypass, including an evaluation of the anticipated quality and affect of the bypass 1
~~(2) Unanticipated bypass. The permittee shall submit notice of an unanticipated bypass as required in Part II, E. 6. of this permit. (24 hour notice).~~
d. Prohibition of Bypass

0) Bypass is prohibited and the Permit Issuing Authority may take enforcement action against a permittee for bypass, unless:
(A) Bypass was unavoidable to prevent loss of life, personal injury or severe property damage; (B) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, retention of untreated wastes or maintenance during normal
I Part II - Page 9 of 14 periods of eq uipment downtime. This condition is not satisfied if adequate, backup equipment sdould have been installed in the exercise of reasonable engmeenng jndgment to prevent a bypass which occuned during normal periods of equipment downtime or preventive maintenance; and (C) The permittee submitted notices as mquired under Paragraph c. of this section. (2) The Permit Issuing Authority may approve an anticipated bypass, after considering its adverse affects, if the Permit Issuing Authority determines that it will meet the three conditions listed above in Paragraph d. (1) of this section.
5. Upsets

a. Definition.
" Upset " means an exceptional incident in which there is unintentional and temporary noncompliance with technology based permit effluent limitations because of factors beyond the reasonable control of the permittee. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facihues, lack of preventive maintenance, or careless or improper operation.
~~b. Effect of an upset.~~
An upset constitutes an affirmative defense to an action brought for noncompliance with such technology based permit effluent limitations if the requirements of paragraph c. of this condition are met. No determination made during administrative review of claims that noncompliance was caused.by upset, and before an action for noncompliance, is final administrative action subject to judicial review.
~~c. Conditions necessary for a demonstration of upset.~~
A permittee who wishes to establish the affirmative defense of upset shall demonstrate, through properly signed, contemporaneous operating logs, or other relevant evidence that: (1) An upset occurred and that the permittee can identify the cause(s) of the upset; (2) The permittee facility was at the time being properly operated; and (3) The permittee submitted notics of the upset as required in Part II, E 6. (b) (B) of this permit. (4) The permittee complied with any remedial measures required under Part II, B. 2. of this permit.
~~d. Burden of proof.~~
~~In any enforcement proceeding the perminee seeking to establish the occurrence of an upset has the burden of proof.~~
~~6. Removed Substances -~~
Solids,' sludges, filter backwash, or other pollutants removed in the course of treatment or control of wastewaters shall be utilized / disposed of in accordance with NCGS 143-215.1 and in a manner such as to pmvent any pollutant from such materials from entering waters of the State or navigable waters of the United States. The pennittee shall comply with all existing federal
Part II Page 10 of 14 regulations governing the disposal of sewage sludge. Upon promulgation of 40 CFR Part 503, any permit issued by the Permit Issuing Authority for the utilization / disposal of sludge may be reopened and modified, or revoked and reissued, to incorporate applicable requirements at 40 CFR Part 503. The permittee shall comply with applicable 40 CFR Part 503 Standards for the Use and Disposal of Sewage Sludg4 (when promulgated) within the time provided in the regulation, even if the permit is not modified to incorporate the requirement. The permi. e shall notify the Permit Issuing Authority of any significant change in its sludge use or dispu3al practices.
~~7. Power Failures s~~
The permittee is responsible for maintaining adequate safeguards as required by DEM Regulatica, Title 15A, North Carolina Administrative Code, Subchapter 2H,.0124 Reliability, to prevent the discharge of untreated or inadequately treated wastes during electrical po.wer failures either by means of alternate power sources, standby generators or retention of inadequately treated effluent. SECTION D. MONITORING AND RECORDS
1. Representative Samoline Samples collected and measurements uken, as required herein, shall be characteristic of the volume and nature of the permitted discharge. Samples collected at a frequency less than daily shall ~oe taken on a day and time that is characteristic of the discharge over the entire period which the sample represents. All samples shall be taken at the monitoring points specified in this permit and, unless otherwise specified, before the effluent joins or is diluted by any other wastestream, body of water, or substance. Monitoring points shall not be changed without notification to and the apprmJ cf the Permit Issuing Authority.

2. Reoortine Monitoring results obtained during the previous month (s) shall be summarized for each month and reported on a monthly Discharge Monitoring Report (DMR) Form (DEM No. MR 1,1.1,2,

3) or alternative fonns approved by the Director, DEM, postmarked no later than the 30th day i
fobowing the completed reporting period. The first DMR is due on the last day of the month following the iv uance of the permit or in the case of a new facility, o.a the last day of the month following the commencemem of discharge. Duplicate signed copies of these, and all other reports required herein, sl.all be submitted to the following address: Divisien of Environmental Management Water Quality Section ATTENTION: Central Files Post Office Box 29535 Raleigh, North Carolina 27626-0535
3. Flow Measurements Appropriate flow measurement devices and methods consistent with accepted scientific practices shall be selected and used to ensure the accuracy and reliability of measurements of I
the volume of monitored discharges. The devices shall be installed, calibrated and maintained to ensure that the accuracy of the measurements are consistent with the accepted capability of that type of device. Devices selected shall be capable of measuring flows with a maximum i deviation ofless than + 10% fmm the true discharge rates throughout the range of expected 1
~ Part II Page 11 of 14 discharge volumes. Once-through condenser cooling water flow which is monitored by pump logs, or pump hour meters as specified in Part I c,f this permit and based on the manufacturer's purap curves shall not be subject to this requirement.
~~4. Test Procedures 4~~
Test procedures for the analysis of pollutants shall conform to the EMC regulations published pursuant to NCGS 14 3-215.63 et. seg, the Water and Air Quality Reporting Acts, and to regulations published pursuant to Section 304(g),33 USC 1314, of the Feueral Water Pollution Control Act, as Amdnded, and Regulation 40 CFR 136; or in the case of sludge use or disposal, approved under 40 CFR 136, unless otherwise specified in 40 CFR 503, unless other test procedures have been specified in this perinit. To meet the intent of the monitoring required by this permit, all test procedures must produce minimum detection and reporting levels that are below the permit discharge requirements and all data generated must be reported down to the minimum detection or lower reporting level of the procedure. If no approved methods are determined capable of achieving minimum detection and reporting levels below permit discharge requirements, then the most serisitive (method with the lowest possible detection and reporting level) approved method must be used.
5. Penalties for Tamnering The Clean Water Act provides that any person who falsifies, tampers with, or knowingly renders inaccurate, any monitoring device or method required to be maintained under this
>ermit shall, upon conviction, be punished by a fine of not more than $10,000 per violation, or ay imprisonment for not more than two years per violation, or by both. If a conviction of a person is for a violation committed after a first conviction of such person under this paragraph, punishment is a fine of not more than $20,000 per day of violation, or by imprisonment of not more than 4 years, or both,
6. Records Retention Except for records of monitoring information required by this permit related to the permittee's sewage sludge use and disposal activities, which shall be retamed for a period of at least five years (or longer as required by 40 CFR 503), the permittee shall retain records of all monitoring information, including all calibration and maintenance records and all original strip chart recccdings for continuous monitoring instrumer.". tion, copies of all reports required by this permit, for a period of at least 3 years from the date of the sample, measurement, repon or application. This period may be extended)y request of the Director at any time.

7. Li rdinc Results i
~~For each measurement or sample taken pursuant to the requirements of this permit, the permittee shall record the following information:~~
a. The dt

act place, and time of sampling or measurements;

b. The in_ adual(s) who performed the sampling or measurements;

c. The date(s) analyses were performed;

d. The individual (s) who performed the analyses;

c. The analytical techniques or methods used; and

f. The results of such analyses.
I
Part II Page 12 of 14
8. Insoection and Entry The permittee shall allow the Director, or an authorized mpresentative (including an authorized contractor acting as a representative of the Director), upon the presentation of credentials and other documents as may be required by law, to;

a. Enter upon the permittee's premises whem a regulated facility or activity is located or conducted, or where records must be kept under the conditions of this permit;

b. Have access to and copy, at reasonable times, any records that must be kept under the conditions of this permit;

c. Inspect at masonable times any facilities, equipment (including monitoring and control equipment), practices, or operations regulated or required under this permit; and

d. Sample or monitor at reasonable times, for the purposes of assuring permit compliance or as otherwise authorized by the Clean Water Act, any substances or parameters at any location.
SECTION E. REPORTING REOUIREMENTS 1. Change in Discharge All discharges authorized herein shall be consistent with the terms and conditions of this ?ermit. The discharge of any pollutant identified in this permit more frequently than or at a evelin excess of that authorized shall constitute a violation of the permit.
2. Planned Chances The permiace shall give notice to the Director as soon as possible of any planned physical alterations or additions to the permitted facility. Notice is required only 'when:

a. The alteration or addition to a permitted facility may meet one of the criteria far de:ermining whether a facility is a new source in 40 CFR Pan 122.29 (b); or

b. The alteration or addition could significantly change the nature or increase the quantity of pollutants discharged. This notification applies to pollutants which are subject neither to effluent limitations in the permit, nor to notification requirements under 40 CFR Part 122.42 (a) (1).

c. The alteration or addition results in a significant change in the permittee's sludge use or disposal practices, and such alternation, addition or change may justify the application of permit conditions that are different from or absent in the existing permit, including notification of additional use or disposal sites not reported during the permit application process or not reponed pursuant to an approved land application plan.

3. Anticioated Noncomoliance The permittee shall give advance notice to the Director of any planned changes in the permitted facility or activity which may result in noncompliance with permit requirements.
~~c< l Pan II Page 13 of 14~~
4. Transfers This permit is not transferable to any person except after notice to the Director. The Director may require modification or revocation and reissuance of the permittee and incorporate such other requirements as may be necessary4nder the Clean Water Act.

5. Monitoring Reports Monitoring results shall be reported at the intervals specified elsewhere in this permit.

a. Monitoring results must be reponed on a Discharge Monitoring Repon (DMR) (See Pan II.
~~D. 2 of this permit) or forms provided by the Director for reporting results of monitoring of sludge use or disposal practices.~~
b. If the permittee monitors any pollutant more frec3uently than required by the permit, using test procedures specified in Part II, D. 4. of this permit or in the case of sludge use or disposal, approved under 40 CFR 503, or as specified in this permit, the results of this monitoring shall be included in the calculation and reporting of the data submitted in the DMR.

c. Calculations for all limitations which require averaging of measurements shall utilize an arithmetic mean unless otherwise specified by the Director in the permit.

6. Twenty-four Hour Reoorting

a. The permittee shall repon to the central office or the appropriate regional office any noncompliance which may endanger health or the environment. Any information shall be provided orally within 24 hours from the time the permittee became aware of the circumstances. A written submission shall also be provided within 5 days of the time the permittee becomes aware of the circumstances. The written submission shall contain a description of the noncompliance, and its cause; the period of noncompliance, including exact dates and times, and if the noncompliance has no been corrected, the anticipated time
~~) it is expected to continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance.~~
~~b. The following shall be included as information which mus: be reported within 24 hours~~
{ under this paragraph: i a (1). Any unanticipated bypass which exceeds any effluent limitation in the pennit. (2) Any upset which exceeds any effluent limitation in the permit. (3) Violation of a maximum daily discharge limitation for any of the pollutants listed by the Directorin the permit to be reported within 24 hours.
c. The Director may waive the written repon on a case.by-case basis for reports under paragraph b. above of this condition if the oral report has been received within 24 hours.

7. Other Noncomoliance The permittee shall report all instances of noncompliance not reponed under Part II. E. 5 and 6.
of this permit at the time monitoring remns are submitted. The reports shall contain the information listed in Part II. E. 6. of this permit.
Pan II Page 14 of 14
8.. Other Information Where the permittee becomes aware that it failed to submit any relevant facts in a permit application, or submitted incorrect information in a permit application or in any repon to the Director, it shall promptly submit suchTacts or information.

9. Noncompliance Notificatinn The permittee shall repon by telephone to either the central office or the appropriate regional office of the Division as soon as possible, but in no case more than 24 hours or on the next working day following the occurrence or first knowledge of the occurrence of ar'y of the following:

a. Any occurrence at the water pollution control facility which results in the discharge of significant amounts of wastes which are abnormal in quantity or characteristic, such as the dumping of the contents of a sludge digester, the known passage of a slug of hazardous substance through the facility; or any other unusual circumstances.

b. Any process unit failure, due to known or unknown reasons, that render the facility incapable of adequate wastewater treatment such as mechanical or electrical failures of pumps, aerators, compressors, etc.

c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass directly to receiving waters without treatment of all or any ponion of the influent to such station or facility.
~~Persons reporting such occurrences by telephone shall also file a written report in letter form within 5 days following first knowledge of the occurrence.~~
10. Availability of Reoorts Except for data determined to be confidential under NCGS 143-215.3(a)(2) or Section 308 of the Federal Act,33 USC 1318, all repons prepared in scordance with the terms shall be available for public inspection at the offices of the Division of Environmental Management. As required by the Act, effluent data shall not be considered confidential. Knowing 1y making,any false statement on any such repon may result in the imposition of criminal penaln,es as provided for in NCGS 143-215.l(b)(2) or in Section 309 of the Federal Act.
I1. Penalties for Falsification of Reoorts. The Clean Water Act provides that any person who knowingly makes any false statement, representation, or cenification in any record or other document submitted or required to be maintained under this permit, including monitoring reports or reports of compliance or noncompliance shall, upon conviction, be punished by a fine of not more than $10,000 per violation, or by imprisonment for not more than two years per violation, or by both s
PART III OTHER REQUIREMENTS A. Construction No construction of wastewater treatment facilities or additions to add to the plant's treatment capacity or to change the type of process utilized at the treatment plant shall be begun until Final Plans and Specifications have been submitted to the Division of Environmental ) Management and written approval and Authorization to Construct has been issued. B. GroundwateLMonitorine The permittee shall, upon written notice from the Director of the Division of Environmental Management, conduct groundwater monitoring as may be required to determine the compliance of this NPDES permitted facility with the current groundwater standards. C. Chances in Discharees of Toxic Substances l The permittee shall notify the Permit Issuing Authority as soon as it knows or has reason to believe: a.That any activity has occurred or will occur which would result in the discharge, on a routine or frequent basis, of any toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the following " notification levels"; (1) One hundred micrograms per liter (100 ug/l); (2)Two hundred micrograms per liter (200 ug/l) for acrolein and acrylonitrile; five j hundred micrograms per liter (500 ug/l) for 2.4-dinitrophenol and for 2-methyl-4.6-dinitrophenol; and one milligram per liter (1 mg/l) for antimony; (3) Five (5) times the maximum concentration value reported for that pollutant in the permit application.
~~b. That any activity has occurred or will occur which would result in any discharge, on a j~~
non-routine or infrequent basis, of a toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the following " notification levels"; (1) Five hundred micrograms pFr liter (500 ug/l); (2) One milligram per liter (1 mg/l) for antimony; (3) Ten (10) times the maximum concentration value reported for that pollutant in the permit application. i l D. Reauirement to Continually Evaluate Altematives to Wastewater Discharees The permittee shall continually evaluate all wastewater disposal alternatives and pursue the most environmentally sound alternative of the reasonably cost effective alternatives. If the facility is in substantial non-compliance with the terms and conditions of the NPDES permit or governing rules, regulations or laws, the permittee shall submit a report in such form and j detail as required by the Division evaluating these al ernatives and a plan of action within sixty (60) days of notification by the Division.
l Pan III Permit No. NC0007064 E. Pollutant Analysis Condition The permittee shall conduct a test for pollutants annually at the effluent from the treatment plant. The discharge shall be evaluated as fellows: 1) A pollutant analysis of the ~ effluent must be completed annually using EPA approved methods for the following analytic fractions. (a) purgeables (i.e., volatile organic compounds); (b) acid extractables; (c) base / neutral extractables; (d) organochlorine pesticides and PCB's (e) her'aicides; and (f) metals and other inorganics. The Annual Pollutant analysts Monitoring (APAM) Requirement Reporting Form A and accompanying memo, to be provided to all discharges affecte,d by this monitoring requirement, describes the sampling and analysis requirements and lists chemicals to be included in the pollutant analysis. This monitoring requirement is to be referred to as the " Annual Pollutant Analysis Monitoring Requirement" (APAM). (2) Other significant levels of organic chemicals must be identified and approximately quantified. j For the purpose ofimplementing this requirement, the largest 10 GC/MS peaks in the purgeable base / neutral extractable, and acid extractable fractions (or fewer than 10, if less than 10 { unidentified peaks occur) for chemicals other than those specified on the APA Requirement Reporting Form A should be identified and approximately quantified as stated in the APAM l Reporting Form A instructions. This pan (item 2) of the APAM requirement is to be referred to as the "10 significant peaks rule"). I. Special Conditions
1. Submittal to the Department of Natural. Resources and Community Development of an Erosion and Sedimentation Control Plan in accordance with Chapter 4 of Title 15 of the North Camlina Administrative Code is required prior to the beginning of significant land disturbing activities.

2. The Company shall continue a groundwater monitoring program acceptable to the Division to determine any adverse inpact on groundwater quality. The Company shall update their Groundwater Monitoring Program to adhere to the current version of 15 NCAC 2L.

.. The permittee shall obtain authorization from the Division of Environmental Management prior to utilizing any biocide in the cooling water. The permittee shall notify the Director in writing not later than ninety (90) days prior to instituting use of any additional biocide used in cooling systems which may be toxic to aquatic life other than those previously reported to the Division of Environmental Management. Such notif' cation shallinclude completion of Biocide Worksheet Form 101 and a map locating the dischaft;e point and receiving stream.
Concentrations of chromium, copper, or zine added to biocides shall not exceed applicable water quality standards or action levels in the receiving stream, as determined by calculations from the biocide worksheet Form 101 with Supplemental Metals Analysis worksheet.
4. The discharge of intake screen wash water is permitted without limitations or monitoring requirements.

5. Copies of Environmental Monitoring Reports required by the Nuclear Regulatory Commission shall be forwarded to the Division of Environmental Management and the US Environmental Protection Agency.

6. The Company shall operate fine mesh screens on the plant's intake structure such that intake water flowing into three pumps bays of each unit's circulating water system will pass through continuously traveling fine mesh screens prior to pumpage. The permittee will maintain a sound maintenance program to avoid operational loss of fine mesh screens during pumpage.
ME ADhDNISTERING AND CO, h@ MOMOWG E MWN3 i A. The permittee must pay the annual administering and compliance monitoring fee within 30 (thiny) days after being billed by the Division. Failure to pay the fee in a timely tramer in accordance with 15A NCAC 2H.0105(b)(4) may cause this Division to initiate action to revoke the permit. l
c { PERMIT SUMMA'RY SHFFT AGENCY: N.C. Division of Environmental Management PERMIT FOR: All wastewater discharges (NPDES) l PERMIT NO. NC0007064 APPLICATION DATE: August 20,1974 PERMIT EFFECTIVE DATE: March 1,1993 PERMIT EXPIRATION DATE: June 30,1996 (93-17.GTS)
X BRUNSWICK STEAM ELECTRIC PLANT NPDES P6RMIT Outfallis) Serial Number 001 and 002 - Once Throuah Coolina and l Service Water l Intake Temperature Monitoring Requirement Removed l Flow (Effluent) Monitoring Requirement Added Verbiage Change On Refueling And Outage Flow Description Biological Monitoring Description - Designated Studies Not Listed Outfall Serial Number 004 - Sewaae Treatment Plant Discharae Discharge Limitation - Daily Maximums Previously Designated Weekly Maximums BOD - Grab Sample Previously Composite i Total Suspended Solids - Grab Sample Previously Composite i Outfall Serial Number 005 - Low Volume Waste Sourggg Priority P.ollutant Anaiysis (APA) Annual Sample Added pH Requirement For Monitoring 2/ Month Previously Weekly i I Roller Plate Data Certified Operator Description Under Section C Expanded Flow Measurements Under Section D include Calibration And Deviation Limitatio l Recording Results Under Section D Has Expanded in Requirements Twenty-four Hour Reporting Under Section E Now Has 5 Day Limit On Written Notification i 1 JPC 2-26-93 l
y ( I ), / ni,.mt ..dh f [. i CANAL "',*I "E^T of pf,,c.c f $f' r g C. l ,.Y .gm. m 3rl,bP ^ RnbW ( ~ oAxisti...u A ,,.y ' O v 'o$$'/.k'.'IEE ' /,9 t,. 4 1 Ag HC AO wiw% e. Oct /c 6 i Scale 1" = 1.5 tiiles BRUNSWICK STT.V1 ELECTRIC P!,Atn' Brunuwiel: County-Nortti Carolina Prepared by: Carolina Power & IM;ht Co. l l
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State of North Carolina Department of Environment, ) Health and Natural Resources ( DMslon of Environmental Management nv ~- James B. Hunt, Jr., Governor 1 Jonathan B. Howes, Secretary DEHNR A. Preston Howard, Jr., P.E., Director j February 14,1995 l I i Mr. John Paul Cowan Director of Site Operations Brunswick Steam Electric Plant Carolina Power & Light Company P.O. Box 10429 Southport, North Carolina 28461-0429
~~Subject:~~
~~Suspected Release of Radioactive Wastewater Carolina Power & Light Company Brunswick Steam Electric Facility Southport, North Carolina Brunswick County~~
~~Dear Mr. Cowan:~~
He Division of Environmental Management appreciates Carolina Power & Light Company's efforts in developing a plan for assessing the impact of a suspected release of radioactive wastewater from buried piping leading away from its radioactive waste facility. It is our understanding that although no actual release has been documented, evidence obtained from pressure testing of the piping indicates the possibility that radioactive wastewater has been released to the environment with a potentialimpact on soils and groundwater. As explained to the Division, CP&L's phased approach involves, first, gauging of groundwater levels at the selected monitoring locations to characterize the flow of groundwater movement in the vicinity of the plant. This information will be used in a i second phase of work to establish a sentinel monitoring system which will provide a means for detecting the impact of the suspected release along witn other possible releases at the facility. He Division looks forward to receiving and reviewing the results of the successive phases of your proposed study. Because no release has been substantiated, the Division will not ask for subsurface investigation within the protected area at this time. However, if subsequent information indicates a need for further analysis of groundwater impacts in the protected area, the Division may require a more intrusive examination of the protected area. l We recognize and appreciate your concerns about wellinstallation in the protected area and i will continue to work with you and your staff to avoid unnecessary drilling in this area. l P.O. Box 29S35. Raleigh. North Carolina 27626-0535 Telephone 919-733-7015 FAX 919-733-2496 An Equd opportuntry AMrmative Action Employer 50% recycled /10% post consumer paper
'v f@@gggg, N FEB 211995 Mr. John Paul Cowan February 14,1995 ~...........,, " ' " " " > < Page 2 Should you have further questions, please contact Rick Shiver or Charles Stehman of the Wilmington Regional Office at (910) 395-3900, or me at (919) 733-7015. Since ely, p -[ mvA. Preston Howard, Jr., P.E. APH:RSS/dbp cc: George Oliver Arthur Mouberry Dayne Brown Don Reuter Central Files i WiRO l l
w o es i i.,; tm i.- _ n, I C) - ~/ CP&L a to O Carolina Power & Light Company '$ h PO Box 1551 O Mo 411 Fayetteville Street Mall 9 28 M Y S 'll Raleigh NC 27602 rn 9 File No.: 830-4-E-2 N 33 $5 U N Mr. Arthur Mouberry, Chief P Ground Water Section i, N. C. Division Of Environmental Management s.J' P. O. Box 29535 Raleigh, NC 27626
~~Dear Mr. Mouberry:~~
For your information, I have enclosed a copy of a report prepared by Carolina Power & Light Company (CP&L) concerning a suspected release of waste water beneath the Brunswick Steam Electric Plant, located near Southport, NC. Earlier this year, an underground pipe used to routinely transfer waste water containing low levels of radioactivity to the plar.t's discharge canal, in accordance with the facility's NPDES permit, was pressure tested and found to contain a leak. The pipe was subsequently repaired, and an assessment conducted to determine if there could be any adverse impacts associated with such a release. No potential adverse effects, either on-site or off-site, were determined to exist. CP&L does not consider a release of this nature to represent a hazard to human health or the environment. The enclosed report documents this finding and provides details concerning the flow path, estimated travel time, and isotopes and activity levels associated with waste water that could have been released to ground water. This iaformation has also been provided to the N. C. Division of Radiation Protection and the U. S. Nuclear Regulatory Commission. If you have any questions or would like to discuss this inatter further, please call me at (919) 546-4189, or call Mr. Charlie Ross of my staff at (919) 546-6146. Yours very truly, N G. J. Oliver, Ph.D. Manager Environmental Services Section GJO/ckr Enclosure
Js - ~ g p ,W8 CHEMISTRY EVALUATION REPORT 94-12 ' RADIOLOGICAL EVALUATION OF LEAK FROM THE U/2 RADWASTE EFFLUENT DISCHARGE LINE l l l~ i nem W
EXECUTIVE
~~SUMMARY~~
In May 1994, an underground pipe that transfers liquid radwaste to the discharge tunnel was tested and determined to contain a leak. This line is located underneath the U/2 Transformer Yard. From this test result, it is assumed that radioactive water has leaked into the ground during past liquid discharges. There is no effect of this below ground leakage to plant site personnel or equipment. Evaluation of the off-site consequences has been performed and independently assessed by an outside consulting firm. The following conclusions are made:
~~1. Approximately 0.28% of the total liquid radwaste volume discharged over the past 7 years was conservatively assumed to be the inventory of leakage.~~
~~The predominant isotope is tritium. 2. The most probable release pathways of contaminated water to any unrestricted areas are:~~
~~Migration laterally to the Intake Canal or Discharge Canal.~~
Travel time has been conservatively determined to be 21.6 years to the Intake Canal. Any detectable concentrations remaining after this time would be diluted by the canal. The released water was intended for the Discharge Canal.
~~Migration vertically and then lateral.y through the Yorktown formation, an underground formation of dense sand approximately 50 feet below the surface.~~
It was conservatively determined that travel time to the site exclusion boundary would be 317 years. 3. In the above cases, radioactive decay, dilution and retardation would result in undetectable concentrations at the nearest unrestricted area. This leak does not impact public safety. This will not be considered an unplanned release of radioactive material from the site. Corrective actions include the following: 1. The U/2 Radwaste Effluent Discharge Line has been repaired and controls are in place to ensure all releases are discharged via this line until the U/1 line integrity is verified. Completed. 2. Test U/1 Radwaste Discharge Line. Due for U/1 Outage. 3/95. 3. Include this evaluation report in the site decommissioning records. Due date 9/1/94 (Completed) 4. Evaluate the need for an ongoing surveillance program for these lines and other underground lines on the plant site that have the potential for leakage. Due 10/01/94. 5. Reinstitute ongoing groundwater monitoring program for radiological analysis from existing wells and evaluate need for new sampling locations. Due date 10/1/94.
CONTENTS PAGE INTRODUCTION 1 POTENTIAL LEAKAGE VOLUME..' 2 RADIOACTIVE PROFILE OF RELEASED WATER 3 UNDERGROUND MIGRATION ANALYSIS 4 GROUNDWATER MONITORING 9 CONCLUSIONS 9 FOLLOWUP ACTIONS 10 REFERENCES-10 ' TABLE 1 RADIOLOGICAL ACTIVITY OF LEAKAGE TABLE 2 RADIONUCLIDE CONCENTRATIONS AFTER MIGRATION TO INTnKE CANAL DECAY ONLY l l TABLE 3 RADIONUCLIDE CONCENTRATIONS IN INTAKE CANAL l FACTORING DILUTION FROM CANAL FLOW l TABLE 4 RADIONUCLIDE CONCENTRATIONS AFTER LATERAL MIGRATION THROUGH THE YORKTOWN FORMATION DECAY ONLY I l
) I i Evaluation of the U/2 Radwaste Effluent Discharge Line Failure j 1. INTRODUCTION The U/2 Radwaste Effluent Discharge Line that transfers liquid radwaste to the U/2 Circulating Water Discharge Tunnel was pressure tested by Project Management personnel on 5/3/94. This piping (2-D12-571-4-153) transports water from the Detergent Drain Tanks, Floor Drain Sample Tanks, Waste Sample Tanks and the Salt Water Release Tank to the U/2 CW Discharge Tunnel for eventual release into the discharge canal. This is a 3 inch diameter pipe made of carbon steel and internally lined with concrete. The line is buried at varying depth 10-20 feet underneath the transformer yard and runs parallel and in close proximity to the U/2 Turbine Building. This line exits the Radwaste Building at an elevation of 4 feet, ascends to an elevation of 12 feet, and runs approximately 61 feet and descends into the U/2 Discharge Tunnel at 7 feet elevation. l The line was initially inspected by use of a camera inserted and routed internally through the piping. No indications of pipe degradation were observed. The line was then isolated at a point just downstream of the primary isolation valve in the -3 Radwaste Building pipe tunnel by removal of check valve D12-V28B and installation of a blind flange equipped with test ports. The opposite end was plugged at the point of entry into the discharge tunnel. The test ports were equipped with a pressure regulator, pressure gauge, and flow rate indicator. The line was pressure tested to approximately 15 psi using the potable water system. It was found that the line did not hold pressure and a pipe leakage rate of 1.12 gpm was calculated. ACR 94-0626 was generated. Controls were instituted to ensure that no further releases were made via the U/2 Radwaste Effluent Line until repairs were made. The line has since been repaired and currently controls (EC 2-94-OPS-094) are in place to snsure that all releases are made via the U/2 line until the integrity of the U/1 line can be verified. Based on the results of this test, and conservatively disregarding any vacuum effects of normal line flow and suction of the discharge tunnel, an evaluation was made that assumes a release of isotopes underground in the immediate vicinity of the effluent discharge line during periods when releases were in progress. Because of the location of the line there would be no effect of any below ground leakage to plant site equipment or personnel. Accordingly, this evaluation will focus on the potential offsite consequences of this occurrence. The potential effects of an underground radioactive release to offsite locations are a function of the concentration of the liquid, the mechanism of transport, and the rate and direction of ground water transport. 1
e'
~~2. POTENTIAL LEAKAGE VOLUME:~~
Therafis no_available data to suggest the time frame when this leak may have been present. There is no underground monitoring j capability to identify or quantify any leakage from this line. j Pressure testing.has not been previously performed on this piping. Potential leakage locations were not identified with the_in-line camera inspection. The line is in a relatively inaccessible location where it is not feasible to excavate to . perform-a physicc1 inspection. Therefore, to evaluate the radiological-consequences, certain conservative assumptions are -made for the purpose of this analysis. The actual leakage is very likely-to be less than assumed for this analysis. It will be assumed that there was a thru-wall leak due to erosion of the cement lining and corrosion of the carbon steel'at multiple locations across1the pipe. It will be assumed that the leak has been present for 7 years. This time frame was selected because a leak on the same line was discovered and repaired in July of 1987 with no other leaks apparent at this time. It will be assumed that the leakage rate, determined by the test to be 1.12 gallons per minute, has existed since 1987 during periods that liquid releases were in progress. This leakage rate, determined based on pressure test conditions, should be significantly higher than any leakage during actual discharges. j From the Semiannual. Radiological Effluent Reports it was determined that a total of 2.11E8 liters of liquid radwaste have been' discharged.from the plant site during the period from the third quarter of 1987 thru March of 1994. Based on discussions with cognizant Radwaste Operations personnel, it was determined that releases are made via only one line at a time, typically through the operating unit's'line. LWhen.both units are operating, releases are made via either unit's. discharge line with~no preference for either one. -Therefore it will be assumed that 50% of the above total volume -is' released via this release line. This would result in a determined volume of 1.06E8 liters discharged through this line since July 1987. .ThereLwas a total of 2935 releases made during this time frame. Using_the same logic.as above, it will be assumed that 1467 releases were'made via the U/2 discharge-line. To determine the average volume per release: -1.'06E8 liters /1467 releases = 7.23E4 liters / release = 1.91E4 gallons per release. The maximum design flow rate-during a release is 200 gpm. The total-release time for the above total release volume: '1.91E4 gal /rel = 96 minutes / release' i -200 gpm 2 C
a r. 96 min /rel'x 1467 rel = 1.41ES minutes of total release time. . With a 1.12 gpm. leak, this would represent 0.28% of the total
~~volume released from the plant over this time frame.~~
3. RADIOACTIVE PROFILE.0F THE RELEASED WATER: Using 0.28% of the total released volume as'a potential leakage volume, the curie content of the potential leakage may be determined. Only long-lived isotopes are considered, since short lived activity would be decayed.away long before any significant migration from the pipe could take place' Only isotopes with half lives greater than'100' days were considered. Semiannual - Report data since 1987 was reviewed for the total curies released for all' isotopes with a greater than a 100-day half life. Utilizing the: leakage rate of;0.28% calculated above, the total activity that could have leaked into the ground surrounding the dischargeLline was determined. 'From this, the average concentration for each-isotope at the point of leakage from the
~~pipe was' established.~~
J Table 1 Radiological Activity of Leakage i Isotope Total Curies Potential Curies Average Released Leaked From Pipe Concentration From Site Since 1987 (Ci) (uci/ml) (Ci) 5 Mn-54 5.47E-01 1.53E-03 2.59E-06 Fe-55 1.27E-01 3.56E-04 6.00E-07 Co-57 3.95E-05 1.11E-07 1.87E-10 Co-60 1.08E+00 3.02E-03 5.11E-06 Zn-65 2.84E-03 7.96E-06 1.35E-08 Sr-90 5.99E-04 1.68E-06 2.84E-09 ,Ag-110m' 1.01E-03 2.83E-06 4.78E-09 Sb-125 5.23E-03~ 1.46E-05 2.48E-08 Cs-134 1.31E-01 3.67E-04 6.17E-07 Cs-137' 2.66E-01 7.45E-04 1.26E-06 Ce-144-1.62E-03 4.53E-06 7.66E-09 H-3 2.68E+02 7.50E-01 1.27E-03 3
w a 4.. UNDERGROUND MIGRATION ANALYSIS: NOTE: l The basis.for this assessment was provided in Section 2.4.12.3 of the FSAR which is based on a 1970 engineering report of the . ground soil.and-ground water' migration conditions around the Radwaste Building by E.D'Appolonia Consulting Engineers, Inc. In addition, D'AppoloniaL(formerly E. D'Appolonia Consulting Engineers, Inc.) was contracted in July 1994 to perform a . technical evaluation of the potential migration of radionuclides . released'to;the ground water _ environment from this potential leahage source. -A.. Subsurface
~~Description:~~
The Radwaste Building is' founded at -7 ft elevation on a clayey . sand backfill which extends to about -25 ft. This backfill is underlain by very dense' fine to medium coarse Miocene sand (Yorktown formation) to about -53 ft, Oligocene deposits of hard clay and_ dense sand and finally the Castle Hayne formation at -95 f t'.. The principle source of groundwater is the Castle Hayne formation which supports an artesian head to +7 ft at the plant site. Most of the wells in_the area of appreciable yield draw from this aquifer. ' Perched water tables exist in the area and, in backfill material, could be as high as 15 ft or about eight ft above the artesian-Castle Hayne head at +7 ft. JThe natural clayey silt, of Pleistocene age, that surrounds the plant site and serves as the natural perching layer has a permeability of 1.8 E-4 cm/sec. The clayey sand backfill which encompasses the-Radwaste Effluent piping, has a permeability ranging:between 1.8E-4 and'5.4E-4 cm/sec. These permeability values are for the horizenal direction. For the natural soil layers such as the Pleistocene and Miocene, the permeability is at least 5, times greater in the horizonal direction than the vertical direction..For site backfill,_the vertical permeability is at lea;t 10 times less due to the manner in which the soil was placed and: compacted. 1 4. -s
B. Potential Migration Pathways: 'Likely migration pathways for any radioactive water that may have been released from this pipe and mixed with the surrounding ground water were' assessed based on information contained in the FSAR and the recent D'Appolonia study. Both horizonal and vertical migration from the leakage source through ground water and ground soil were considered. The tendency for horizonal migration would be parallel to the natural gradient of the area. The nearest body of water to this pipe location is the Intake Canal (o ft elevation) approximately 850-ft away. The next nearest body of water would be the Discharge Canal (+5 ft elevation) which is approximately 1500 ft away. Due to the increased distance and lower flow gradient to the Discharge Canal, only migration toward the Intake Canal will ~be considered as it would be the most conservative scenario. Movement toward Nancy's Creek north of the plant was not considered a realir ic possibility since the ground surface rises approximately 10-feet in this direction. Information contained in the FSAR, originally provided by E. D' Appolonia engineers determined that the travel rate ior' liquid in the underlying soil would be 7 ft/yr. At this rate, the migration of any liquid exiting the pipe to the Intake Canal would be approximately 120 years. However, the current study by D'Appolonia provides a more conservative travel time of 21.6 years to reach the Intake Canal based on a gradient of 0.0176 (15 ft/850 ft), maximum horizonal permeability of 5.4E-04'cm/sec, and an effective porosity of 0.25. A straight line pathway was used in this analysis, though this is improbable due to the location of plant building foundations that would require some vertical and lateral movement from a straight line. Any time associated with actual movement past physical impediments was conservatively disregarded. For the purposes of this evaluation, 21.6 years will-be used as the minimum travel time. With this long travel time, many mechanisms'would reduce radioactivity concentration including radioactive r'ecay, filtration, ion exchange and dilution in transient. Radioactive decay alone would be responsible for e]iminating most of radionuclides. An analysis was coeducted to considar the radioactivity concentrations that would be present in the liquid after a 21.6 year time period. As a further conservatism, no credit is taken for-dilution in transient with the ground water, filtration, or ' ion exchange during this migration period. S t
Table 2 Radionuclide Concentrations After Migration To Intake Canal ) Decay only Isotope Average Concentration 10CFf.M Ratio of (Half-Concentration after 21.6 Effluent 10CFR20 life) uCi/ml yrs Conc. limit uCi/ml limit after uCi/ml 21.6 yrs Mn-54 2.59E-06 1.82E-14 3E-05 6.06E-10 (291 d) Fe-55 6.00E-07 2.35E-09 1E-04 2.35E-05 (2.7 y) Co-57 1.87E-10 3.04E-19 6E-05 5.08E-15 l (270 d) Co-60 5.11E-06 2.98E-07 3E-06 9.93E-02 (5.27 y) Zn-65 1.35E-08 2.79E-18 SE-06 5.58E-13 (245 d) Sr-90 2.84E-09 1.66E-09 SE-07 3.33E-03 (28 y) l Ag-110m 4.78E-09 1.41E-18 6E-06 2.35E-13 (249 d) Sb-125 2.48E-08 1.39E-11 3E-05 4.64E-07 l (2.0 y) Cs-134 6.17E-07 6.64E-10 9E-07 7.37E-04 (2.19 y) Cs-137 1.26E-06 7.65E-07 1E-06 7.65E-01 l 1 (30 y) Ce-144 7.66E-09 3.62E-17 3E-06 1.21E-11 (285 d) H-3 1.27E-03 3.75E-04 1E-03 3.75E-01 (12.26 y) Based only on radioactive decay over a 21.6 year migration time, only a few of the above isotopes would be present above detectable limits and all would be below 10CFR20 Effluent Concentrations. Factoring in the other mechanisms that would reduce the concentration over time (dilution, filtration and ion I exchange) it is clear that the concentration of these isotopes would be well below 10CFR20 limits prior to any contact with the l 6 j
c r. nearest uncontrolled water supply. Additionally, once the leakage ever reaches'the Intake Canal, significant dilution would occur. Using an~ average canal flow rate of 1250 cfs or 5.61E5 j gpm, a' dilution factor of 7.65E-08 can be rpplied to the above concentrations-resulting in a small fraction of 10CFR20 limits for any isotope that could travel this distance. This can be j seen in. Table 3 for the highest contributing isotopes. Again this does not even consider other methods of removal such as ion exchange. Table 3 ) Radionuclide Concentrations In Intake Canal Factoring in Dilution From Canal Flow-Isotope Concentration After Ratio of 10CFR20 21.6 years and Diluted Limit in Intake Canal Co-60 2.28E-14 uCi/ul 7.60E-09 Cs-137 5.85E-14 uCi/ml 5.85E-08 H-3 2.87E-11 uCi/ml 2.87E-08 Total 2.87E-11 uCi/ml 9.48E-08 It should also be noted that migration to the Intake Canal would lead to flow through the plant circulating Water System and eventually to the Discharge Canal where the water was ultimately destined to go originally. Long term future use of this canal will be addressed during plant decomissioning. The consequences of vertical migration of radioactive liquid from this pipe through the site backfill were considered by D'Appolonia. It is conceivable that downward infiltration into the Miocene-age sand in the Yorktown formation could occur. The ) total 1 vertical distance from the leak point is 29 feet with a calculated gradient of 0.276. The vertical permeability is at least 10 times less than the horizonal permeability through the compacted backfill. Further vertical penetration below the Yorktown formation was discounted due to the presence of the oligocene sediments. This formation is comprised of 35 feet of lenses of clay and fine grained sand as well as 1cnses of consolidated limestone. This acts as an aquiclude isolating the ' Castle Hayne formation. Thus analysis was focused on lateral movement through the Yorktown formation. There are no domestic wells within the 3000 ft exclusion zone of the plant. Using a gradient of 0.001, a permeability value of 3.2E-3 cm/sec (FSAR 2.4.12.3) and a porosity of 0.35 and factoring in vertical travel time, the time required for migration downward from the pipe to the Yorktown formation and then laterally 3000 feet away to the site exclusion limit was determined to be 317 years. Remaining radionuclide 7 4 .>+#
~ concentrations after this time period are included in Table 4. Table 4 Radionuclide Concentrations After Lateral Migration Through the Yorktown Formation Decay Only Isotope Concentration Concentration 10CFR20 Ratio of (Half-at Point of after 317 Effluw't 10CFR20 life) Release years Conc. limit (uCi/ml) (uCi/ml) Limit after 317 (uCi/ml) years Sr-90 2.84E-09 1.11E-12 SE-07 2.22E-06 (28 y) Cs-137 1.26E-06 8.32E-10 1E-06 8.32E-04 (30 y) H-3 1.27E-03 2.10E-11 1E-03 2.10E-08 (12.26 y) (Activity for all other isotopes would be negligible after 317 years) Decay alone reduces all isotopes to below detectable levels. However, in addition to decay, D'Appolonia considered the effects dilution and retardation on the lateral movement through the Yorktown formation. It was found that dilution would further reduce the radionuclide level by approximately a factor of 580. It is clear that the worst possible case could only result in less than detectable concentrations at the site exclusion boundary. In addition, retardation factors such as adsorbtion, dispersion, and ion exchange were considered for heavier radionuclides such as Cs-137 and Sr-90. The velocity of these radionuclides in terms of overall ground water velocity as a function of the distribution coefficient (Ke) was determined. It was found that for Ke values of greater than 5 or 10, there is essentially no nuclide movement. For soils with significant fines content, values of Ke much greater than 10 are reported. Based on this alone, it is highly unlikely that any significant movement of Sr-90 and Cs-137 from the point of leakage would even occur. Tritium would be the only nuclide with any significant mobility from the point of origin. As shown above, the concentration would be reduced to undetectable levelc after travel time and subsequent dilution in the Intake Canal. Due to the salt content, the canal would never be a usuable source of water for the public. Migration of tritium through the Yorktown formation would also result in reduction of the concentration to undetectable levels by the time any migration would reach the site boundary. 8 j
7~ 5. GROUNDWATER MONITORING Sampling and analysis of radioactivity from sample wells in close proximity to the plant landfill located on the north side of the Turbine Building have been performed in the past. Samples were collected quarterly and analyzed for gamma emitting nuclides in accordance with the BNP Environmental Monitoring Program. Samples routinely revealed no detectable concentrations of radioactivity. In addition, the State of North Carolina l independently collected and analyzed samples for gross alpha and gross beta activity and would analyze for gamma isotopes if sample results exceeded predetermined trigger levels. The sample results indicated that the effort to obtain and analyze these samples was not worthwhile and these programs were discontinued in 1990. As part of this evaluation, two sample wells on the north side of the plant were sampled on 5/10/94 and analyzed for activity. These wells would be an indicator of perched ground water activity. Results of these samples indicated no detectable activity present using the environmental LLD values. As discussed above, the horizonal migration of groundwater would parallel the natural gradient of the area, in this case toward the Intake Ccnal. The position of Well No. 2 is favorable as a sample location due to a likely migration path that water leaking under the transformer yard would take due to the impediment effect of the foundation of the Radwaste and Turbine Buildings. 6. CONCLUSIONS: Based on the pressure test results it is accepted that the j possibility of an underground leak of radioactive liquid has { existed from the U/2 Radwaste Effluent Discharge Line. Assessment of the off-site consequences was made based on several conservative assumptions, assessment of Semiannual Effluent Report data, application of accident analysis information { contained in the updated FSAR and from an independent engineering assessment from D'Appolonia. It was concluded that any leakage from this line would be contained to the restricted area of the i site for at least 20 years. Most radionuclides would be of no concern at this point because of decay alone. Additionally it j was concluded that long-lived heavier radionuclides such as Sr-90 i and Cs-137 are strongly retarded by the backfill soils and unlikely to migrate any significant distance from the point of l release. This leaves tritium as the only nuclide to consider. Entry into the Intake or Discharge Canal would not be of concern i due to dilution effects of canal flow. Regardless of the long term future use of this canal it would remain unusable as a potable water source because of the' saltwater content. Future long term canal usage will be determined at decommissioning. Potential migration underground through the Yorktown formation would reduce tritium concentration to below detectable levels by decay and dilution from dispersion of ground water flow long before it could ever reach any areas past the exclusion zone. Therefore this will not be considered a release of radioactive i i 9 L
( l l material to any unredtricted areas and does not pose an impact to the public. 7. FOLLOWUP ACTIONS: 1. Include this evaluation into the site decommissioning records in accordance with 10CFR50.75 g. Action Item 94-00626 Item 7 has been issued to E&RC. Due 09-01-94. (Completed) 2. Institute a ground water monitoring program for radiological analysis of existing wells. Action Item 94-00626 Item 6 has been issued to E&RC. In addition, the need for new monitoring locations will be evaluated. Due 10-01-94 3. Evaluate the need for an ongoing surveillance program to ) verify the integrity of these lines. In addition, i evaluate the need to include other underground lines on the plant site that have the potential for radioactive leakage as applicable. Action Item 94-00626 Item 4 has been issued to Tech Support. 10-01-84 l 8. REFERENCES BNP ACR 94-00626 j BNP Semiannual Radiological Effluent Reports; 1987 thru 1994 l BNP FSAR 2.4.12.3. l l l " Leakage Evaluation Report of the U/2 Radwaste Effluent Line j For the Brunswick Nuclear Plant," D'Appolonia Engineering Division of Ground Technology, Inc; August 1994 l 10 L J}}

ML20212H610

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1.0 INTRODUCTION

SUMMARY

1.0 INTRODUCTION

SUMMARY

5.1 BACKGROUND

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Dear Mr. Clier :

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Dear Mr. Cowan:

Dear Mr. Mouberry:

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