ML101620052
| ML101620052 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 06/09/2010 |
| From: | - No Known Affiliation |
| To: | Office of Information Services |
| References | |
| FOIA/PA-2010-0209 | |
| Download: ML101620052 (21) | |
Text
1. Have there been tritium releases (spills, leaks, etc) other than routine effluent releases, into the public domain (outside the Owner Controlled Area)?
NOTE: It is assumed that "Owner Controlled Area" refers to the property owned by AmerenUE.
There were two breaks in the discharge pipeline (1995 & 1998) where diluted liquid effluent spilled into nearby Logan Creek. There were two earlier breaks (1988 & 1989) which may have spilled into Logan Creek; however, the fate of the spillage is not documented in the available documentation.
Logan Creek drains the northeast, east, and southeast sides of the plant plateau and empties into the Missouri River approximately 100' downstream of the current location of the liquid effluent discharge point. Logan Creek flows mostly on AmerenUE property downstream of the break locations, but some portions are not on AmerenUE property.
Logan Creek was sampled extensively following the 1995 and 1998 breaks, and again in 2006 as one of the earliest actions of the Groundwater Protection Initiative. The 2006 sample results were reported in the 2006 Annual Radiological Environmental Operating Report (Appendix C, Table C-6). There was no tritium detected in the 2006 samples.
There were three additional breaks in the old discharge pipeline (1987, 2005, & 2008).
The 1987 break was under Highway 94, but did not involve radioactive materials. The water from the 2005 and 2008 breaks contained radioactive liquid effluent, but in both cases, the spillage was contained on AmerenUE property.
These spills have been documented pursuant to 10 CFR 50.75(g). For additional information, refer to CAR 200602748, Action 18 and CAR 200808920.
.2.
2..Has the licensee identified onsite radioactive subsurface water contamination?
Yes
- 3. If the answer to #2 is yes, what are the source(s) of tritium or other contaminates and what are the highest groundwater contamination levels measured?
(1) Monitoring wells surrounding the power block structures indicate tritium in the shallow groundwater with a concentration of approximately 200-400 pCi/L. The highest concentration of 1479 pCi/L occurred in April 2008. It is believed that this tritium is due to washout of tritium in gaseous effluents. Washout is a known phenomenon (OE25138, OE25092, RIS 2008-03) which occurs when rain or snow removes tritium from gaseous effluents and returns it to the site. Samples were taken of condensate from site air conditioning systems, freezer frost, and ice from the cafeteria ice machine in June 2007.
The tritium. concentration in the A/C condensate ranged from not detectable to 640 pCi/L. The: tritium in the freezer frost ranged from 411-2135 pCi/L. The ice in the ice machine was made from the plant potable water, and there was no detectable tritium in the ice (re : 2007 AREOR, Part II, Appendix C, T-able C-9). Three samples of rain water from pudoý:es were analyzed for tritium in April 2008. The tritium concentration in the water pud'.les ranged from not detectable to 599 pCi/L (ref: 2008 AREOR, Part II, Appendix I',, Table C-1).
(2) Monitoring wells in the Missouri River alluvial plain in the vicinity of manhole 6B on the retired discharge pipeline show low levels of tritium in the shallow groundwater (see Figure 1). The highest concentration of 615 pCi/L occurred in December 2009. This is residual activity from moisture carryover during normal operation of the air release valve in manhole 6B while the (now retired) pipeline was in service. The tritium concentration in split spoon soil samples taken in the vicinity of manhole 6B in July 2006 ranged from not detectable to 25,863 pCi/L. The tritium concentration in split spoon soil samples taken in the vicinity of manhole 6B in December 2006 ranged from non detectable to 3,116 pCi/L (ref: 2007 AREOR, Part II, Appendix D).
The air release valves on the old pipeline were capped in December 2007. The vacuum breaker was not capped due to concerns about drawing a vacuum and compromising the structural integrity of the pipeline. The new pipeline entered service on October 28, 2008.
- 4. Provide a general description of liquid radwaste discharges, water/monitoring wells, and any onsite aquifers.
Description of Discharges: All radioactive liquid effluents are discharged through the discharge Monitor Tanks (DMTs) in batch mode and diluted with cooling tower blowdown water to ensure ODCM limits are met. The effluent water is transported by underground stainless steel piping to the discharge line where it is mixed with the dilution flow. The diluted effluent is transported to the discharge point (Missouri River) by a six mile long pipeline.
The original cooling tower blowdown line was replaced under MP 07-0012 and Job 07004468. The new pipeline is constructed of high density polyethylene and was placed in-service on October 28, 2008. Joints were tested by direct air testing to insure leak tightness and visual in-service inspections were performed on any joint that could not be
-lemte-d-du-e-to-th-e~e-ai-e-d-c-o-n-stctio-n-meth-od7.-The-scope-f-thiprojýOt-iidlU-de-s--....
complete replacement of the old discharge line from mixing manhole 86-2 to the tie-in with the Missouri River discharge point. No air release valves are included in the design/construction of the new pipeline in order to minimize potential leak points and eliminate the vulnerability seen in the old pipeline. The new system includes 1 vacuum breaker and 1 gate valve, both of which are located in new manholes coated with an elastomeric polyerethane bonded geotextile membrane to prevent the release of any potential leakage.
NOTE: The discharge pipeline route is on AmerenUE property.
Water/ Monitoring Wells: There are 31 monitoring wells and 11 ponds in the program.
The location of the monitoring wells and ponds, collection frequency, and required analyses are shown on Tables 1 and 2 and Figure 2. In addition to the groundwater monitoring wells, AmerenUE also collects potable well water samples from area residents. The location, collection frequency, and required analyses are shown on Tables 3. (ref: HTP-ZZ-071 01 -DTI-REMP-SMPL-SCHED, rev. 03).
Aquifers: (Refer to Figure 2.4.12-10.) Across the plateau, the Graydon Chert Formation is considered to be the shallow aquifer. There are localized areas where the overlying material may be included in this aquifer but, on the whole, it was found that saturated groundwater is confined within the chert. The chert (deposits of cherty clay,
sandstone, and sandy chert conglomerate) is a moderate water-bearing unit, with the glacial till acting as the confining unit above the chert, and the Burlington Limestone acting as the confining unit and top of the aquitard beneath the chert. The Graydon Chert lies unconformably atop the Burlington Limestone and unconformably below the glacial till so its elevation and thickness vary. Across the plateau, the depth of the Graydon Chert ranges from 15 to 39 feet below ground surface (bgs) and averages approximately 27 feet bgs. Its thickness ranges from 16 to 61 feet and averages approximately 38 feet.
Due to confined groundwater conditions in the Graydon Chert aquifer, groundwater elevations measured in the monitoring wells rise above the top of the chert to within approximately 7 to 15 feet of the ground surface in the central portion of the plateau.
Overall, groundwater elevations do not vary much through the year, typically by less than 1 to 2 feet across the central part of the plateau and several feet at the shallow wells around the perimeter of the plateau.
Beneath the shallow aquifer there is a leaky, confining aquitard. The top of the aquitard begins with the top of the Burlington Limestone. The aquitard extends through the Bushberg Sandstone, Snyder Creek Formation (shale), Callaway Limestone, and upper..
portion of the CJC Dolomitic Limestone. The depth to the top of the aquitard averages 68 feet bgs across the plateau, and its thickness is approximately 290 feet in the central portion of the plateau. Beneath the aquitard is the Cotter-Jefferson City (CJC) aquifer. The depth to the CJC aquifer is approximately 350 feet bg in the central portion of the plateau. The thickness of the CJC aquifer beneath the plateau is approximately 300 feet. Regionally, the CJC aquifer is considered to be a minor aquifer and represents the top of the Cambrian-Ordovician aquifer system, which consists of intervals of minor aquifers and major aquifers with intermittent aquitards to depths up to 2,000 feet bgs. Groundwater levels for the deeper CJC wells beneath the plateau are also confined such that measured groundwater levels rise approximately 50 feet above the top of the
_CJC aquiferto an-approximate-elevation-oftbetw.een-55-0and_560.feet-mean-seailevel....
Although groundwater elevations appear to respond to seasonal changes in precipitation, they vary only by approximately 1 foot.
The estimated well yield for the chert aquifer is less than 1 gallon per minute (gpm) and for the CJC aquifer is approximately 5 to 10 gpm. The relatively low estimates of storativity in the CJC aquifer are consistent with mildly fractured bedrock aquifers where the small size of fractures and low degree of interconnectedness limits the amount of water in storage and the amount of water to potentially yield to a well.
Alluvial deposits along the Missouri River form an important stream-valley aquifer from the Iowa-Missouri state line to the junction of the Missouri and the Mississippi Rivers.
The deposits partly fill an entrenched bedrock valley that ranges from about 2 to 10 miles wide. Based on the regional understanding of the Missouri River alluvial aquifer, it is expected that groundwater elevations.within the aquifer would mimic surface water elevations along the Missouri River and the lower reach of Auxvasse Creek. (ref: Final Groundwater Model Report, Paul C. Rizzo Associates, Inc., May 2, 2008, Project No. 06-3624.)
- 5. Provide a description of groundwater flow characteristics and number and location of monitoring wells.
A three-dimensional groundwater flow model was developed for the Callaway site using the Waterloo Hydrogeologic, Inc. Visual MODFLOW Premium 4.2 software package.
The groundwater model provides a relatively accurate tool to quickly assess long-term changes to the aquifer system by including temporal variation in recharge (around plateau and flood plain), the drainage (on plateau), the streams (Auxvasse, Mud and Logan), and the Missouri River flow. The results are provided in Figures 26-33. The model indicates:
Groundwater particles starting at the top of the Graydon Chert aquifer in the powerblock area will travel horizontally outward and vertically downward according to the estimated groundwater flow velocities and enter the aquitard.
" Once the groundwater particles move into the aquitard, they would experience only downward and vertical flow until the CJC aquifer is reached.
The groundwater particles remain in the CJC aquifer as they flow toward the potential discharge location along Auxvasse Creek or along Mud Creek.
The groundwater particles that originate around the periphery of the plateau or along the drainages that run from the periphery of the plateau will still flow with a downward component; some particles discharge to the drainages while some continue to move downward beneath the drainages and will potentially discharge at drainage locations further down the hillside. (ref: Final Groundwater Model Report (rev. 1), Paul C. Rizzo Associates, Inc., October 31, 2008, Project No. 06-3624.)
There are 31 monitoring wells and 11 ponds in the program. The location of the monitoring wells and ponds, collection frequency, and required analyses are shown on Tables 1 and 2 and Figure 2. In addition to the groundwater monitoring wells, AmerenUE also collects drinking water samples from area residents who use well water for drinking. The location, collection frequency, and required analyses are shown on Table 3. (ref: HTP-ZZ-07101-DTI-REMP-SMPL-SCHED, rev. 03).
- 6. If tritium has been detected, what is the estimated time for the tritium to reach a public drinking water aquifer? If the tritium is already detected offsite, please explain the location of the activity and the levels detected.
(1) (Refer to Figure 2.4.13-1) Assuming a postulated instantaneous release in the powerblock area, radionuclides would enter the Graydon Chert aquifer, which is assumed to have an approximate thickness of 40 feet. Groundwater in the Graydon Chert aquifer flows radially outward and downward through the Graydon Chert into the underlying aquitard, flows vertically downward through the aquitard and enters the CJC aquifer, and then remains in this aquifer as it flows toward the projected discharge locations west toward Auxvasse Creek and southwest toward Mud Creek. Groundwater has the potential to discharge at these locations and would enter the creeks and flow toward the Missouri River.
Travel times were estimated for (1) a groundwater particle starting at the top of the Graydon Chert aquifer traveling horizontally outward and vertically downward and entering the aquitard; (2) a groundwater particle traveling vertically downward through the aquitard in the center of the plateau; and (3) a groundwater particle traveling from the periphery of the plateau to a potential discharge location along Auxvasse Creek or
along Mud Creek. Several radial directions of flow were considered both in the Graydon Chert aquifer and in the CJC aquifer. The resulting travel times are:
0 The estimated travel time for a groundwater particle at the top of the Graydon Chert to flow outward and downward and to enter the aquitard is 37.4 years.
- The estimated travel time for a groundwater particle to travel downward through the aquitard and enter the CJC aquifer beneath the plateau is 2573 years.
- The estimated travel time for a groundwater particle to flow through the CJC aquifer from the western periphery of the plateau to the closest location along Auxvasse Creek was 579 years. The estimated travel time for a groundwater particle to flow through the CJC aquifer from the southern periphery of the plateau to the closest location along Mud Creek is 408 years. These were the shortest two travel times estimated for potential groundwater discharge to local streams.
The Missouri River alluvial plain is prone to frequent flooding and there are no public drinking water aquifers in the area. Boring logs indicate the soil is a mixture of silt and clay/sandy silt to about 15-feet bgs. From 15 feet bgs to at least 25 feet bgs, the soil is gray, fine grained sand. Groundwater in the alluvial aquifer moves rapidly towards the Missouri River, but with a downstream component as well.
(ref: Final Groundwater Model Report, Paul C. Rizzo Associates, Inc., May 2, 2008, Project No. 06-3624, and Callaway Unit 2 FSAR, Rev. OA, 02/29/08.)
(2) Tritium has not been detected in any of the offsite groundwater samples, including area drinking water samples.
- 7. If your site has developed a program, please provide your sites monitoring plan for
......burtied/underg ro und-piping s-Callaway's Buried Pipe Program is EDP-ZZ-01011. This procedure is undergoing revision and Rev 1 is expected for release mid May 2010. Revision 1 will incorporate "recommended practices" defined in EPRI Technical Report - 1016456, "Recommendations for an Effective Buried Pipe Program". In 2010, Callaway will work with a vendor to develop a buried pipe database which will house all information relevant to buried pipe systems, including inspection data. By December 2010, Callaway will have a prioritized list or ranking of buried piping systems/segments based on consequence and likelihood of failure. From this prioritized list, an Inspection Plan will be developed for the assessment of structural and leakage integrity of buried piping systems. By December 2013, a formal Asset Management Plan will be developed and will include not only inspection plans, but planned maintenance activities, plans for repair, and plans for replacement.
The STARS plants (Callaway, Palo Verde, Diablo Canyon, SONGS, Wolf Creek, STP, Comanche Peak) have collaborated to create a Buried Pipe Team to ensure all plants within the alliance meet the goals set forth in the Industry Initiative for Buried Piping.
Callaway is the lead for this team.
Callaway does not have any formal station commitments for buried pipe testing/
inspection.
Figure 1: Location of Manholes on the (now retired) Discharge Pipeline Figure 1 was removed to reduce file size for email. Figure 1 will be transmitted separately.
Table 1 Non-Potable Groundwater Wells and Ponds Collection and Analysis Schedule (2)
~ ~
i
.es c.....
on.....
ID
~Description "
...... -6*-fK
--F~i*-ni.*owe F~io-ci*-are-....
936 TPlant power bloc*ck ar er 937A Plan power block area~3 937B I Plant power block area 937C Plant poe 0lc area~
Loca-tio-n-q~~* 1 Freq I.Inside OCA Structual fill M
Inside OCA"-Glacfa-S---
ia'ial-"i4j--- -tl M.
Inside OCA Structual fill M
Inside OCA Inside OCA 937D Plant power block area 937ET Plant power block area
_3_
937F 1 Plant power block area GWS I Groundwater sump p-lant peninsula area
- Structual fill Structual fill Structual fill M
M M
Inside OCA Inside OCA Structual fill M
Inside OCA Structual fill M
M Inside OCA " Glacial till ()-
OW-4 bw-5 M!H§Ripon berm ~
UHS pond berm ° Inside OCA Glacial till V')
Q U1MW-001 U1MW-002 U1MW-004 U1 MW-005 U1MW-006 U1MW-010 U1MW-012 Just outside OCA fence in center portion of pJate
.au,_33
.. de..
, 0. -...-...........................
Just outside OCA fence in center portion of plateau, 206 deg, 0.4 mi.
Located s6uth of Dillon residence in Missouri River alluvial plain, 165 deg, 3.7 mi.
Located south of Brownlee/ Hudson residence in Missouri River alluvial plain, 160 de., 3.8 mi.
Located south of Ward residence in Missouri River alluvial plain, 171 deg, 3 mi.__
Located in old pipeline bed in Missouri River alluvial plain, 173 deg, 3.1 mi.
Located south of Ward residence in Missouri River alluvial plain, approx. 100'
-d e-e7 172 -~d
- 3 --* iT........
N38.76620 W91.78400 N38.75710 W91.78420 N38.71 010 W91.76350 Graydon Chert Graydon Chert Missouri River Alluvial Q
Q N38.71060 W91.75730 N38.711860 W91177280 N38.71770 W91.77440 N38.71860 W91.7731 0 N38.7512 0 W91.77610 Missouri River Alluvial Missouri River Alluvial Missouri River Alluvial Missouri River Alluvial Graydon Chert Q
Q Q
Q U1MW-013 U1MW-014 U1IMW-015 U1MW-016 Located in pipeline corridor, south of sludge ponds, on outer perimeter of plateau, 159 deg, 0.8 mi.
Located in pipeline corridor, near manhole 6B in Missouri River alluvial plain, 171 deg, 3.7 mi.
Located in pipeline corridor, north side of Hwy 94 in Missouri River alluvial plain, 162 deOe
_ 3..9_m i.
Located in pipeline corridor, near heavy haul road at Intake Structure, in Missouri River alluvial pla.in, 151 deg, 4.5 mi.
Located in pipeline corridor, near manhole 6B in Missouri River alluvial plain, 172 deg, 3.75 mi.
N38.70860 W91.77090 Missouri River Alluvial N38.70750 W91.7585° Missouri River Alluvial N38.74090 Missouri W91.70560 River Alluvial U1MW-017 N38.70800 Missouri W91.771 00 River Alluvial Q
U2 MW-2S U2 MW-5S
.U2 MW-8 Located on periphery of the plateau, 5 deg, 1.8 mi.
Located on periphery of the plateau, 261 deg, 1.1 mi.
Located radially outward from the central part 9 _.the plateau, 12 deg, 0.4 mi.
N38.7876-G W91.77810 N38.75920 C
W91.8010° __
N38.76800 G
W91.77950 raydon Chert iraydon Chert raydon Chert Q
Q
U2 MW-9
-*U2 MW-10 U2 MW-12 U2 MW-16 F05 F15 Located radially outward from the central
_art_ ofthepla~tea~u,_90_deg, 0.3 mi.
Located radially outward from the central partof the plateau, 163 deg, 0.4 mi.
Located radially outward from the central
.part of theýplateauq,_301 deg, 0.5 mi.
."a*
L th e p.!a e u L L e
-- _ 0.-.
....5 _.!........
Located along Mud Creek, screened for th(
CJC aquifer, _203 deg, 2.9 mi.
Located just inside OCA fence in center
_portion of plateau well,169 deg, 0.9 mi.
Located just outside OCA fence in center portion of plateau, screened for the CJC aquifer, 29 deg, 0.4 mi.
N38.76170 W91.77570 N38.75680 W91.77930 N38.7.654 0 W91.78920 N38.72260 W91.80260 Graydon Chert Graydon Chert Graydon Chert CJC Q
Q Q
1-*
N38.74900 W91.77800 CJC Q
4-N38.7664 0 W91.~77790 CJC Q
Notes:
(1) All distances are measured from the midpoint of the two reactors as described in the FSAR-SA Section 2.1.1.1 Error! Reference source not found. (N 380 45.705' W 910 46.873').
(2) Analyze all samples for 3H and Principal Gamma Emitters to the LLD shown in ODCM/!FSAR-SP Table 16.11-9 for surface water. If contaminated with gamma emitting nuclides of plant origin, analyze for Hard-to-Detect (HTD) nuclides. HTD nuclides are defined as 89Sr, g0Sr, 58Fe, -3Ni, 2 37 Np, 2 38 pu, 2 3 9/ 24 0pu, 241pu, 24'Am, 2 42 Cm and 2 4 3 / 244Cm.
(3) Refer to drawing 8600-X-88100 for locations of plant power block area groundwater monitoring wells and groundwater sump.
(4) Unconsolidated Glacial Till/ modifier Loess materials
Table 2 Surface Water (Ponds)(2)
ID CTBD-Unit 2 Pond 01 Description()
Cooling tower blowdown (water from the cooling tower basin) (3)
UHS pond -M Unit 2 pond_(3)
Fishing pond, 264 deg, 0.6 mi.
Location Freq Inside OCA Q
Inside OCA
[
Q Inside OCA Q
N38.76070 SA W91.79500 N38.75570 SA Pond 02 Fishing pond, 232 deg, 0.7 mi.
W91.79150 Outfall 010 Outfall 011 Outfall 012 Outfa~ll013 Outfall 014-Outfall 015 Sludge Lagoon
- 4 Storm water runoff pond, 42 deg, 0.6 mi rStorm water runoff pond, 60 deg, 1 mi Storm water runoff pond, 178 deg, 0.5 mi Storm water runoff pond, 189 deg, 0.5 mi
.~ r~ aerun-i~ nY
- ~ -~
Storm water runoff pond, 343 deg, 0.6 mi
[ Storm water runoff pond, 4 deg, 0.7 mi On-service sewage sludge lagoon, 153 deg, 0.8 mi.
N38.76820 W91.77420 N38.76880 W91.78280 N38.75470 W91.781 10 N38.75530.
W91.78280 N38.76950 W91.78440 N38.77210 W91.78050 SA SA SA SA SA
.4 N38.7521u W91.77530 SA Notes:
(1) All distances are measured from the midpoint of the two reactors as described in FSAR-SA
-Section-2:l1lwlError!Reference-source-not found.-(N-38°-45.705'-W 910-46.873').
(2) Analyze all samples for 3H and Principal Gamma Emitters to the LLD shown in ODCM/
FSAR-SP Table 16.11-9 for surface water. Except for CTBD, UHS, and Unit 2, If contaminated with gamma emitting nuclides of plant origin, analyze for Hard-to-Detect (HTD) nuclides. HTD nuclides are defined as 89Sr, 90Sr, 55Fe, 6 Ni, 237Np, 238PU, 239/ 4 Pu, 241Pu, 41Am, 242Cm and 243/2"cm.
(3) Refer to drawing 8600-X-881 00 for locations of UHS, Unit 2 pond, and the cooling tower.
Figure 2: Surface Ponds Figure 2 was removed to reduce file size for email. Figure 2 will be transmitted separately.
Table 3 Drinking Well Water Collection and Analysis Schedule (2) 3 5
6 7
Descr i pion T Ward, Rick & Nancy 9204 Count.y.Road0 448 1 6* 8 d.eg. 2.9 mi.
Miller, Albert 9057 County Road 448, 158 deg, 2.6 mi.
Hux, Ron 8802 County Road 448, 153 deg, 2.5 mi.
Lindeman, Henry 8754 County Road 448, 141 dec, 2.2 mi.
Location N 380 43.252 W 910 46.225 N 380 43.628 W 910 45.822 N 380 43.797 W 910 45.605 Q
Q N 380 44.224 W 910 45.353 Q
.L
.L.*
8 9
10h 12~
Kriete, Stan 8304 CountyRoad 448, 108 deg, 2.1 mi.
Brandt, John 9400 County Road 457, 193 deg, 3.4 mi.
Clardy, Scott & Tammy 9142 County Road 457, 204 deg, 2.9 mi.
Dillon, Susan 9076 County Road 457, 208 deg, 2.7 mi.
Dillon, Joe 9549 County Road 464, 165 deg, 3.6 mi.
Plumm -er*, obe*rt- ------
10402 State Road 94, Portland, 140 deg, 4.8 m i.....
k N 380 45.145 W 910 44.683 N 380 42.794 W 910 47.711 N 380 43.407 W 910 48.216 N 380 43.616 W 910 48.305 N 380 42.71 W 910 45.83 N 380 42.541 W 910 43.408 N 380 42.591 W 910 43.022 Q
Q Q
Q D01 Portland Bar/Grill 136 deg, 5.0 mi.
PW1 Supp~lieplant potable water
[ Callaway Plant Cafeteria -Q Notes:
(1) All distances are measured from the midpoint of the two reactors as described in FSAR-SA
-Se-ctiorn2.1.1.1Error!-Referernce source not-found. (N-380-45.705'-W-91°-46.873')
(2) Analyze all samples for 3H and Principal Gamma Emitters to the LLD shown in ODCM/
FSAR-SP Table 16.11-9 for drinking water. If contaminated with gamma emitting nuclides of plant origin, analyze for Hard-to-Detect (HTD) nuclides. HTD nuclides are defined as 89Sr, 55
' 6 3 Ni, 237-,
238p 2 39 24 0 Pu 2 4 1 pu, 24
, 24 2 C an 2 4 3 /244 M.
- Obr, Fe, N1 Npv,/Fu
- 'Am, Cm and]/Lm (3) Station PW-1 is supplied by Unit 1 construction well #3 (DGLS # 028347) which is open from 400'- 1400' bgs across multiple aquifers from the Cotter-Jefferson City through the Derby-Doe Run formation. Located inside the Owner Controlled Area.
0-Ouarternnry Loam Clay and Clacda '1111 Graydon CIhert 3
CongIomnerale BurInrgtari L~ime!Ltgo-Banhberg Sandstane 100-Snyder Creek Shale Forrawtlon ColwyLimestare 200-C=r-J~.Ifrqan Ciy 300-400-L~ower Cottir-,iefltreor City Ormydan Chart Aquifer
-Leaky Confining '
Aqu~ord Mi~ssouri-Aquifer AQuifer 500-1ý-
LEGEND,.
Z -
TOP OF GROUNDWATE]R TABLE NOTE.
DEPTHS ARE FEE" BELOW GROUND SURFACE.
Recllonal Aquifer Figure 2.1A2-10 H)iALL CALLAN Rev. 0 geogcal Units AYUn I 2 FSAR PreCombrign Bo0ememnL 2000-
pw~j urnpigWý.L~fi___-
M4
%colitdring VW;M caOfl C70.6) Z,-ýRý
-i-fc9Eanogic Skidy Area*
ntovf Intor'mi-10 R Rt.,A.I-u...
'A".i..ld-l Figure 26 - P domeeec Suurfa Map GmYsyeo-CtewtAquiir Gmwb-,water Model RePort August 2008
g.unV1:ic Study Ama Cwfur 'ntrvaI-11`1 1:
t~J~
~W.
44:1:
I~U~o~
IFEMME'~
Figure 27 - Poimu~flfcS map Groundtwater Model Report August 2M0
LEGEND (517.68)
- 0-d.19ýýIWI z_____
WiAF-1 W
Mitornu VWet n-oatbn H
l4drDgeolog IG StUdy Area
-C~ntbur Interfa] - 10 ft RE FRB4CE FgrW9 28 - powuwlionm&I Sraww map 1ow-J~effeon Cty AqWW~
Gmunctwator hMode Report August 2008
FIgure 29 - Cross-Wecton of Groundwater flow field Groundwater Model Report August 2008
0 Figure 33 - Periphery Particle Release Grouidwater Model Report Auaust 2008
U00-7%-
700 600 Figure 2.4.13-1 Rev. 0 Conceptual Groundwater Flow and Transport PeII'rways CALLAWAY Unit 2FSAR