ML061070558
| ML061070558 | |
| Person / Time | |
|---|---|
| Site: | Braidwood  |
| Issue date: | 02/03/2006 |
| From: | Butler S Exelon Corp |
| To: | Steven Orth Division of Reactor Safety III |
| References | |
| FOIA/PA-2006-0115, FOIA/PA-2010-0209 | |
| Download: ML061070558 (26) | |
Text
- l Anne Boland -FW: Reisponse to IEPA Violation Notice Page 1 I Anne Boland - FW: Response to IEPA Violation Notice Page 1!
From:
<scott.butler@exeloncorp.com>
To:
<sko@nrc.gov>
Date:
Fri, Feb 3, 2006 1:37 PM
Subject:
FW: Response to IEPA Violation Notice Steve - FYI - Please treat as withhold from the public as this was a Certified letter sent to the IEPA
Original Message-From:
Ainger, Kenneth A.
Sent:
Thursday, February 02, 2006 5:54 PM To:
O'Neill, Thomas S; Haeger, Allan R.; Meister, James R.; Nesbit, Craig; VanVranken, John; Sklenar, Scott E; Melberg, Peg; Miller, Neal F. (Brwd Communications); Polson, Keith; Ambler, Dale F.;
Butler, Scott D.; 'pharvey@craworld.com'
Subject:
Response to IEPA Violation Notice Attached is our response that was submitted to the IEPA today.
<<0001041.pdf>> <<16841 -00(PRES003)GN-WA002-FIGURE 1.pdf>>
<<16841 -00(PRES003)GN-WA004 FIGURE 2.pdf>>> <<16841 -00(PRES003)GN-WA005-FIGURE 3.pdf>> <<16841-0O(PRES003)GN-WA006-FIGURE 4.pdf>>
<<16841-00(PRES003)GN-WA007-FIGURE 5.pdf>> <<16841-00(PRES003)GN-WA003-FIGURE 6.pdf>>
This e-mail and any of its attachments may contain Exelon Corporation proprietary information, which is privileged, confidential, or subject to copy ight belonging to the Exelon Corporation family of Companies.
This e-mail is intended solely for the use of the individual or entity to which it is addressed. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution, copying, or action taken in relation to the contents of and attachments to this e-mail is strictly prohibited and may be unlawful. If you have received this e-mail in error, please notify the sender immediately and permanently delete the original and any copy of this e-mail and any printout. Thank You.
Exekm.)
Exelon Ceneration Company. LLC voviwexe0oncorp.com Nu-lear Braidwoxd Station 35100 Scuth Rt 53, Suite 84 Bracevill!, IL 60407^9619 February 2, 2006 BWOE;O01 1 Ms. Beverly Booker Illinois Environmental Protection Agency Bureau of Water, CAS #19 P. O. Box 19276 Springfield, IL 62794-9276
Subject:
Braidwood Station Response to Violation Notice W-2005-00537
Reference:
Letter from Illinois EPA, 'Violation Notice: Exelon Generation -
Braidwood Station," dated December 16, 2005
Dear fMs. Booker:
In the referenced letter, the Illinois Environmental Protection Agency (Illinois EPA) issued a ViolatiDn Notice to Exelon Generation Company, LLC (Exelon) regarding groundwater quality at Braidvwood Station and adjoining property. The Violation Notice is based on sampling results obtained between December 1 and December 12, 2005, that indicate the level of tritium exceeds the standards set forth in Section 12 of the Illinois Environmental Protection Act and the Illinois Pollution Control Board's regulations.
The enclosure to this letter contains Exelon's response to the Violation Notice. The response describes our actions to protect and inform the public, cease the release of tritium to groundwater, prevent future release of tritium to the groundwater, and our plans to address the elevated levels of tritium in the existing groundwater.
In accordance with 415 ILCS 5/31, "Notice; complaint; hearing;" subdivision (a)(2)(C), Exelon requests a meeting with representatives of the Illinois EPA to discuss this matter. We will contact the llinois EPA to arrange this meeting.
This written response is being submitted within 45 days of Exelon's receipt of the Violation Notice via certified mail (i.e., December 20, 2005). By submitting this response, Exelon is not admitting that it has violated the Illinois Environmental Protection Act or the regulations of the Illinois Pollution Control Board. If you have any questions about this response, please contact Kenne h Ainger at 630 657-2800.
Respectfully, Keith J. olson Site Vice President Braidw:od Station VIA CERTIFIED MAIL RETURN RECEIPT REQUESTED
ENCLOSURE RESPONSE TO VIOLATION NOTICE W-2005-00537 I.
Violation Notice Allegations On December 16, 2005, the Illinois EPA issued the following in a violation notice to Exelon Generation Company, LLC:
Groundwater Quality No person shall cause, threaten, or allow the release of any contaminant to resource grcundwater such that treatment or additional treatment is necessary to continue an existing use or to assure a potential use of such groundwater, or such that the existing or polential use of such groundwater is precluded. Exelon Generation - Braidwood Station must cease and decease of any further violations of the Act.
Viclation Violation
[late Description 12112/05 Sampling results indicate violations of Section 12 of the Act, the General Prohibition Against Use Impairment of Resource Groundwater, and the causing of the groundwater quality standard of tritium (20,000 pCi/L) to be exceeded during the time period and at the location(s) designated below:
RW-2 10.5 ft. depth 58,621 pCVL RW-2 20.5 ft. depth 170,024 pCi/L RW-2 25 ft. depth 223,888 pCi/L Rule/Reg.
Section 12(a), and (d) of the Act, 415 ILCS 5/12, 35 III. Adm. Code 620.115, 35 III. Adm. Code 620.301 (a)(1) and (2), and 35 III. Adm. Code 620.41 0(e)(3).
12/07/05 Sampling results indicate violations of Section 12 of the Act, the General Prohibition Against Use Impairment of Resource Groundwater during the time period and at the location(s) designated below:
Private well located at horse barn North of pond 1,151 pCi/L Rule/Reg.
Section 12(a), and (d) of the Act, 415 ILCS 5/12, 35 111. Adm. Code 620.115, and 35 1I1. Adm. Code 620.301(a)(1) and (2).
12/0)6/05 Sampling results indicate violations of Section i2 of the Act, the General Prohibition Against Use Impairment of Resource Groundwater, and the causing of the groundwater quality standard of tritium (20,000 pCi/L) to be exceeded during the time period and at the location(s) designated below:
VB-3-4 58,489 pCVL VB-3-3 43,894 pCUL VB-3-2 32,830 pCi/L VB-3-6 53,572 pCUL P-4 33,736 pCUL RW-2 33,736 pCilL
Rule/Reg.
Section 12(a), and (d) of the Act, 415 ILCS 5/12, 35 III. Adm. Code 620.115, 35 Ill. Adm. Code 620.301(a)(1) and (2), and 35 Ill. Adm. Code 620.41 0(e)(3).
Violation Violation Date Description 12/01/05 Sampling results indicate violations of Section 12 of the Act, the General Prohibition Against Use Impairment of Resource Groundwater during the time period and at the location(s) designated below:
Pond located just north of Smiley Rd. and west of the 2,347 pCI/L blow-down line.
2,464 pCi/L Rule/Reg.
Section 12(a), (d), and (f) of the Act, 415 ILCS 5/12.
II.
Exelon Response The following response describes our actions to protect and inform the public, cease the release of tritium to groundwater, prevent future release of tritium to the groundwater, and our plans to address the elevated levels of tritium in the existing groundwater. In order to further assist the Illinois EPA in an understanding of site conditions, we are including in Attachment 1 a summary of key investigative data collected to date at the sitE. These data summaries are considered preliminary, as we are collecting additional data and continuing our evaluations, and include:
- 1. A base map of monitoring locations and key site features.
- 2. Groundwater level contour maps of the shallow and deep zones of the upper aquifer.
- 3. Estimated tritium concentrations presented in contour maps of the shallow and deep zones.
- 4. A hydrogeologic cross-section.
- 5. A table summarizing permanent and temporary well monitoring specifications.
- 6. A table summarizing sample results for tritium analyses from wells in the site area; and
- 7. A table summarizing tritium results from samples collected at private wells.
Protection and Notification of the Public Exe lon's first priority in response to this issue is the protection of the public. When we determined in late November 2005 that tritium in groundwater had likely migrated off the Braidwood Station property, we notified potentially affected residents. Door-to-door initial notifications were made to inform them of the status of our investigation, present them a fact sheet from the U. S. EPA regarding tritium, offer to sample their private wells for the presence of tritium, and respond to their questions and concerns. The results of the private well sample analyses, conducted by an independent laboratory, were provided to the residents. On December 12, 2005, Exelon conducted a meeting with the potentially affected local residents to update them on the status of our ongoing investigation, explain future actions and address their questions and concerns. In addition, we have met individually with a number of residents to address specific 2
4 concerns. A second round of door-to-door updates was conducted with the potentially affected residents on December 29, 2005, during which we provided those residents a copy of our December 29, 2005 news release and invited them to another update meeting which was held on January 26, 2006.
In addition to sampling private wells, Exelon obtained permission from potentially affected residents to drill temporary wells on their property and to sample water from ponds on their property to determine the migration of the tritium in groundwater.
Exelon's plume characterization team continued sampling, analyzing and notifying adjoining land owners until the leading edge of the tritium was identified. Exelon has sampled over 31 private wells, drilled and sampled over 150 monitoring wells on and off the property, and sampled nearby surface water ponds offsite to laterally and vertically identify the distribution of tritium in the groundwater.
In order to identify potential users of groundwater in the down-gradient direction of flow (which is to the north) from the blowdown pipeline, Exelon initiated a comprehensive well inventory and well records search. This search is being conducted through the Illinois State Water Survey and includes groundwater users that can be identified within a one mile radius of the blowdown pipeline. The location of the wells, their use, depth and construction are being compiled for future evaluations. This well inventory, along with previously identified well users (private residences where wells have already been sampled), will form the basis of Exelon's notification list. This list will identify additional private, as well as public, water supply users that would be notified if it is determined there is a potential for impact to their water supply wells.
Cessation of Release of Tritium to Groundwater Liquid radioactive effluent releases into the Braidwood Station circulating water blovvdown line were suspended on November 23, 2005. This action was taken until additional information could be collected and testing conducted to ensure the integrity of the pipeline at all locations. Braidwood Station has not processed any liquid radioactive effluents through the circulating water blowdown pipeline since November 23, 2005.
As a result of suspending liquid radioactive effluent releases into the circulating water blowdown pipeline, temporary 20,000 gallon water storage tanks are being used to store liquid radioactive effluents onsite until new radioactive waste processing equipment is maie operational.
An acoustical leak detection test was completed on January 6, 2006 to verify the integrity of the circulating water blowdown pipeline. A tethered acoustical sensor head inserted into the pipe was carried by the circulating water blowdown flow providing leak detection as it traversed along the pipeline length. The sensitivity of the sensor was determined by Exelon Engineering to detect a one gallon per minute leak under normal operating blowdown line pressure. One anomaly was identified at the end of the pipeline nee r the Kankakee River. This area was excavated and a visual inspection of the exposed pipe determined there was no leak.
Although there have been no liquid radioactive effluent releases through the circulating water blowdown pipeline since November 23, 2005, because the vacuum breaker valves installed along the length of the blowdown pipeline have been a source of leaks and 3
spills, a daily visual inspection of the blowdown pipeline is being conducted to verify no gross leakage.
In addition, Exelon has completed the following activities.
Installation and sampling of over 30 shallow (approximately 15 ft. deep) and over 20 deep (approximately 25 ft. deep) monitoring points adjacent to the blowdown pipeline.
Laboratory analyses of over 60 samples for tritium as a direct indicator of leakage from the blowdown pipeline and 45 samples for chloride and sodium which have been established as an indicator of the Braidwood Station cooling lake water flowing in the blowdown pipeline.
Measurement of water levels along the blowdown pipeline and comparison with the regional, shallow groundwater table to determine if significant leaks are creating a mounding effect on the water table.
Comparison of the three dimensional distribution of tritium in the groundwater to the plumes located south of Smiley Road to determine if it correlates with an on-going, or active release from the blowdown pipeline.
The above activities have relied upon groundwater data collected to date near and down-gradient of the blowdown pipeline. None of the data have indicated to Exelon and to its hydrogeologic experts that tritium measured in the groundwater on and off property has come from an active leak in the circulating water blowdown pipeline or vacuum breakers.
Prevention of Future Release of Tritium to Groundwater Exelon is taking several actions, as described below, to prevent future releases of tritium intc the groundwater. These include a potential design change involving discharge of liquid effluent into an additional circulating water blowdown pipeline, a project to significantly reduce the overall liquid discharge of tritium from Braidwood Station, and, in the event of a future spill, procedure changes to create a more effective response to minimize the impact to the environment.
Liquid effluents will not be introduced into the current circulating water blowdown pipeline unless leakage from this pipeline and vacuum breaker valves can be prevented wit>h a high level of confidence. Exelon is currently exploring options for an alternate pipeline for discharge of liquid radioactive effluents that would maintain the current discharge point, but eliminate concerns with the existing circulating water blowdown pipeline and vacuum breaker valves.
Additionally, a project is underway at Braidwood Station to minimize liquid radioactive effluent releases into the circulating water blowdown pipeline in the future with the installation of new water processing equipment in the radioactive waste system. These improvements include state-of-the-art technologies in reverse osmosis and an additional unit to recycle existing liquid radioactive waste inventory into water that meets our quality requirements for the reactor coolant system. Also, Braidwood Station intends to install a means of converting liquid effluents to gaseous effluents.
4
Exelon is also looking into methods of reducing the production of tritium through various changes in reactor core configuration and primary water chemistry. These include potential changes in the reactor fuel rod design, "burnable poisons" in the reactor core, ani fuel cycle length. Exelon is also partnering with its vendors to explore possible new technologies in tritium separation.
Finally, in the event of a future spill, the following actions are being taken to improve Exelon's response and minimize the impact to the environment.
- 1. A corporate environmental manager was assigned the action to institutionalize Exelon's tritium environmental spill response knowledge. The manager will utilize input from the various functional areas to develop an integrated set of procedures to mitigate and remediate spills with the potential to contain radioactive isotopes. Appropriate personnel will be trained on these procedures.
A review of the effectiveness of the procedure development and training will be conducted at a suitable interval following completion.
- 2. The knowledge of Braidwood Station personnel regarding environmental regulations and reporting requirements will be enhanced with additional training.
Training programs for personnel in the Operations, Chemistry/Environmental, and Radiation Protection Departments will be analyzed to determine additional knowledge requirements to address low level radioactivity spill reporting and personnel will be trained and tested on the changes. General training for all employees will be reviewed to identify any needed changes.
- 3. Exelon's applicable procedures/programs will be reviewed to ensure the Illinois regulations governing radioactive contamination of groundwater are correctly reflected and implemented in those documents.
Plans to Address Elevated Levels of Tritium in Existing Groundwater Exelon proposes to address the elevated levels of tritium in existing groundwater through the Illinois EPA's Site Remediation Program (SRP). Participation in the SRP will include the following.
- 1. Conduct of a focused site investigation to characterize the extent of contamination. The investigation will focus on tritium. Since November 2005, Exelon has conducted extensive sampling as described above, and is currently evaluating the results to determine if additional sampling is necessary. A well survey, as described above, consistent with SRP rules and Illinois EPA policy, will also be included. Prior to submitting the final Site Investigation Report, Exelon will contact the Illinois EPA SRP staff to obtain input on any additional needs. The Site Investigation Report will be submitted as soon as possible, but no later than March 24, 2006.
- 2. Development of remedial objectives. As part of this step, Exelon will not only evaluate compliance with Part 620.410(e)(3), but risk to the public as well.
Work on developing a Remedial Objectives Report (ROR) will commence as soon as possible, and will be submitted no later than 30 days after Illinois EPA approval of the Site Investigation Report.
5
- 3. Preparation of a Remedial Action Plan. Based on the results of the Site Investigation and the Remedial Objectives Report, a Remedial Action Plan (RAP) will be prepared and submitted. Options are currently being evaluated which include pumping areas of high concentration and returning these waters to the circulating water system. The RAP will include a schedule for all activities from startup to completion, and also provide for quarterly reports.
This plan will be submitted within 30 days of approval of the Remedial Objectives Report.
- 4. Submission of a Remedial Action Completion Report (RACR). Once the RAP is approved, the final remedial design will commence within 30 days and the final RACR will be submitted within 30 days of completion.
Tha site has not yet been precisely identified, but generally is shown as the area on figures 4 and 5. Areas separate from this site, to the east along the routing of the blowdown pipeline, are currently being investigated.
As part of the overall strategy to address this issue, a community relations plan is being implemented. The plan builds on Braidwood Station's existing community outreach program that has been used, as described above in this response, to conduct multiple communications to keep the public informed. Exelon intends to continue this effort.
The community relations plan includes development of a website with access to a fact sheet on the Braidwood tritium issue, a telephone hotline for interested members of the public to acquire information on the issue, and an upcoming community information night. The actions in our community relations plan may be adjusted over time, as the circumstances of this issue evolve. Our current community relations action plan will be submitted by March 1, 2006.
6 Summary of Key Investigative Data Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Table 1 Table 2 Table 3 Groundwater Monitoring Locations Average Groundwater Contours Shallow - January 2006 Average Groundwater Contours Deep - January 2006 Estimated Tritium Results Shallow Groundwater Zone Estimated Tritium Results Deep Groundwater Zone Site Specific Hydrogeologic Profile Monitoring Well Construction Specifications Summary of Tritium Results in Monitoring Wells Summary of Tritium Results at Private Wells
DRA}:T Page 1 of 6 TABLE 1 MONITORING WELL CONSTRUCTION SPECIFICATIONS T-LOTV IT t
rvumv BRAIDWOOD STATION Well Number Boriykg Total Depth (ft BGS) '
Ground
- Surface (NCG'D)2 Well Diameter (inches)
Well Material Screen Interval (ft BGS)
Top of Riser Elevation (NGVD)
Screen Top Elevation (NGVD)
Screen Bottom Elevation (NGVI))
Stick lip (ftAGS) 4 MW-101 MW-102 MW-103 MW-104 MW-105 MW-105D MW-106 MW-106D MW-107 MW-108 MW-1(9 MW-l(10 MW-ll MWV-11D MW-112 MW-112D MW-13 MW-113D VB-2-1 VB-2-2 VB-2-21)
VB-2-3 VB-2-4 VB-2-5 V13-2-5D VB-2-6 VB-2-6D VB-2-7 CRA 16841 1'rms-lntatiol 3 - Tl 1(.0 11.0 8.0 8.0 16.0 24.0 16.0 27.0 16.0 16.0 16.0.
20.0 16.0 26.5 16.0 26.5 16.0 24.0 15.0 15.0 29.5 15.0 15.0 15.0 24.0 15.0 24.0 15.0 599.49 602.42 595.72 596.60 597.29 597.22 599.60 599.70 599.85 599.76 598.81 604.01 603.29 603.17 598.57 598.61 596.10 596.14 601.27 596.82 596.49 595.95 596.08 595.76 595.76 596.01 596.01 600.51 2
PvC3 2
PVC 2
PVC 2
PVC 2
PVC I
PVC 2
PVC 1
PVC 2
PVC 2
PVC 2
PVC 3
PVC 4
PVC I
PVC 5
PVC I
PVC 6
PVC 1
Pvc PVC 1
PVC 1
PVC I
PVC 1
PVC 1
PVC 1
PVC I
PVC PVC 1
PVC 5 tolO 6 toll 3 to 8 3 to 8 11 to 16 19 to 24 11 to 16 22 to 27 11 to 16 11 to 16 11 to 16 9.5 to 19.5 5.5 to 15.5 21.5 to 26.5 5.5 to 15.6 21.5 to 26.5 5.5 to 15.7 19 to 24 10 to 15 10 to 15 24.5 to 29.5 10 to 15 10 to 15 10 to 15 19 to 24 10 to 15 19 to 24 10 to 15 602.77 605.70 598.84 598.80 600.74 598.20 602.73 601.81 603.24 603.10 601.23 607.27 607.20 605.05 602.62 600.85 599.77 596.90 605.71 600.16 598.95 600.16 600.82 599.82 596.78 601.44 596.77 602.04 594.49 596.42 592.72 593.60 586.29 578.22 588.60 577.70 588.85 588.76 587.81 594.01 597.29 581.67 592.57 577.11 590.10 577.14 591.27 586.82 571.99 585.95 586.08 585.76 576.76 586.0l 577.01 590.51 589.49 591.42 587.72 588.60 581.29 573.22 583.60 572.70 583.85 583.76 582.81 584.01 587.29 576.67 582.57 572.11 580.10 572.14 586.27 581.82 566.99 580.95 581.08 580.76 571.76 581.01 572.01 585.51 3.28 3.28 3.12
.2.20 3.45 0.98 3.13 2.11 3.39 3.34 2.42 3.26 3.91 1.88 4.05 2.24 3.67 0.76 4.44 3.34 2.46 4.21 4.74 4.06 1.02 5.43 0.76 1.53
DRAFT Page 2 of 6 TABLE I MONITORING WELL CONSTRUCTION SPECIFICATIONS EVLrT CEh.
C-CE1.TR AT~fit BRAIDWOOD STATION Well Borin5 Ground Number Total Depth Surface (ft BGS) I (NCVD)2 Well Diameter (inches)
Well Screen Mfaterial Interval (ft BGS)
Top of Riser Elevation (NGVD)
Screen Top Elevation (NGVD)
Screen Bottom Eletatio(n (NG VD)
Stick Ulf (ft AGS) 4 V13-2-7D VB-2-8 VB-2-9 VB-2-9D VB-3-1 VB3-3-2 VB-3-3 VB-34 VB-3-4D VB-3-5 VB-3-6 VB-3-7 VB-3-7D VB-3-8 VB-3-9D VB-3-10 VB-3-10D VB-1-1 VB-I-ID VB-1-2 VB-1-21)
VB-1-3 VB-1-3D VB-l-4 VB-1-4D VB-1-5 V5-B1-5D VB-1-6 CRA 168-1 Prnseitalkio 3-T 25.0 15.0 14.0 28.0 15.0 15.0 15.0 15.0 25.0 15.0 15.0 14.5 24.0 14.5 24.5 13.0 23.5 15.0 32.0 15.0 28.0 15.0 27.5 15.0 28.0 15.0 28.0 15.0 600.51 598.18 596.38 596.49 596.27 596.18 596.18 596.24 596.24 596.44 595.68 596.43 596.49 602.14 599.94 599.64 599.32 600.17 1
PVC I
PVC I
PVC I
PVC I
PVC I
PVC 1
PVC 1
PVC I
PVC 1
PVC 1
PVC I
PVC I
PVC I
PVC 1
PVC I
PVC I
PVC 1
PVC 1
PVC I
PVC I
PVC I
PVC I
PVC I
PVC I
PVC 20 to 25 10 to 15 9 to 14 23 to 28 10 to 15 10 to 15
'10 to 15 10 to 15 20 to 25 10 to 15 10 to 15 9.5 to 14.5 19 to 24 9.5 to 14.5 19.5 to 24.5 8 to 13 18.5 to 23.5 10 to 15 27to32 10 to 15 23 to 28 10 to 15 22.5 to 27.5 10 to 15 23 to 28 10 to 15 23 to 28 10 to 15 602.28 599.05 600.99 601.51 600.03 601.37 600.82 599.49 597.04 599.51 596.62 599.28 598.44 605.62 604.65 603.61 601.50 603.85 605.34 580.51 588.18 586.38 586.49 586.27 586.18 576.18 t
586.74 577.24 586.94 577.18 588.43 577.99 592.14 589.94 589.64 589.32 590.17 t
575.51 583.18 t
581.38 581.49 581.27 581.18 571.18 581.74 572.24 581.94 572.18 583.43 572.99 587.14 584.94 t
584.64 t
584.32 45 585.17 1.77 0.87 t
4.61 5.02 3.76 5.19 4.64 3.25 0.80 3.07 0.94 2.85 1.95 3.48 4.71 3.97 t
2.18 3.68
DRAI:T Page 3of 6 TABLE 1 MONITORING WELL CONSTRUCTION SPECIFICATIONS UVrI vTLY f-r I.
TIr A rTTd, BRAIDWOOD STATION well foring Ground IVell Well Screen Top of Riser Screen Top Screen Bottoyn Stick Number Total Dleptlh Surface Diameter Material Interval Elevation Elevation Elevation t[p (ft BGS)'
(NGVD)2 (inches)
(ft BGS)
(NGVD)
(NGVI))
(NGVD)
(ft AGS) J VB-1-6D 27.0 1
PVC 22 to 27 VB-1-7 15.0 1
PVC 10 to 15 603.62 VB-'1-7D 26.5 600.48 1
PVC 21.5 to 26.5 602.80 578.98 573.98 2.32 VB-1-8 15.0 I
PVC 10 to 15 603.36
+*
V13-1-SD 26.5 600.15 1
PVC 21.5 to 26.5 602.49 578.65 573.65 2.34 VB-1-9 15.0 t
1 PVC 10 to 15 601.86 VB-1-9D 27.0 1
PVC 22 to 27 RW-1 25.0 596.68 1
PVC 5 to 25 599.36 591.68 572 2.68 RW-2 24.0 596.59 I
PVC 4 to 24 599.30 591.59 571.59 2.71 IZW-3 24.0 596.24 1
PVC 4 to 24 599.19 592.24 572.27 2.95 RWV-4 24.0 596.31 1
PVC 4 to24 598.77 592.31 572.31 2.46 Bl.-l 17.0 600.38 I
PVC 12 to 17 605.58 588.38 583.38 5.20 BL-2 14.5 600.16 1
PVC 9.5 to 14.5 604.84 590.66 585.66 4.68 BL-3 23.0 600.60 1
PVC 18 to 23 604.50 582.60 577.60 3.90 BL-4 14.5 599.76 I
PVC 10 to 15 601.91 589.76 58f476 2.15 13L-5 21.0 599.76 I
PVC 16 to 21 602.60 583.76 578.76 2.84 BL-6 16.5 597.74.
I PVC 11.5 to 16.5 601.83 586.24 581.24 4.09 BL-7 14.0 597.57 1
PVC 9 to 14 601.08 588.57 583.57 3.51 BL-8 18.0 598.53 1
PVC 13 to 18 602.29 585.53 580.53 3.76 Bl-95 12.5 599.75 1
PVC 7.5 to 12.5 602.75 592.25 587.25 3.00 BL-9 21.0 599.60 1
PVC 16 to 21 602.49 583.60 578.60 2.89 BL-9D 29.0 599.65 1
PVC 24 to 29 600.36 575.65 570.65 0.71 BL-10 17.0 602.49 1
PVC 12 to 17 605.37
.590.28 585.28 2.88 BL-10D
- 32.0 602.43 1
PVC 27 to 32 605.16 575.43 570.43 2.73 BL-'1 16.5 59747 I
PVC 11.5 to 16.5 600.65 585.97 580.97 3.18 BL-IID 28.0 597.34 1
PVC 23 to28 599.09 574.34 569.34 1.75 BL-12 17.0 598.03 I
PVC 12 to 17 601.60 586.03 581.03 3.57 BL-12D 28.0 598.10 1
PVC 23 to 28 599.87 575.10 570.10 1.77 CRA 16P41 I'mwntnatiol 3-TT.11-.-.----------..--..-
DRAFT Page 4 of 6 TABLE 1 MONITORING WELL CONSTRUCTION SPECIFICATIONS
%-r I
a;
" rNr V.%,
I A fltI BRAIDWOOD STATION Well Boring Ground Well Well Screen Top of Riser Screen Top Screen Bottom Stick Nunmber Total Depth Surface Diameter Material Interval Elevation Elevation Elevation Up (ft BGS)'
(NGVD)
(inches)
(ft BGS)
(NGVD)
(tNGVD)
(NGVI))
(ft A GS) 4 BL.-'13 15.0 598.07 1
PVC 10 to'S 601.37 588.07 583.07 3.30 13,-13D 24.5 598.05 I
PVC 19.5 to 24.5 600.82 565.55 564.55 2.77 BL-14 18.0 59734 1
PVC 13 to 18 601.26 584.34 579.34 3.92 B1-141) 26.5 597.46 1
PVC 21.5 to 265 599.90 575.96 570.96 2.44 BL-15 17.5 597.29 1
PVC 12.5 to 17.5 600.98 584.79 579.79 3.69 BL-15D 24.0 597.54 1
PVC 19 to 24 598.50 578.54 573.64 0.96 BL-16 17.0 597.12 1
PVC 12 to 17 600.30 585.12 580.12 3.18 BL-16D 24.0 597.28 1
PVC 19 to 24 598.17 578.28 573.28 0.89 BL-17 14.5 597.01 1
PVC 9.5 to 14.5 597.62 587.51 582.51 0.61 BL-17D 24.0 597.01 1
PVC 19 to 24 598.1.1 578.01 573.01.
1.10 13L-18 14.5 596.82 1
Pvc 9.5 to 14.5 597.59 587.32 582.32 0.77 BT.-19 9.0 594.94 I
PVC 4 to 9 595.55 590.94 585.94 0.61 BL-20D 28.0 596.89 1
PVC 23 to 28 600.45 573.89 568.89 3.56 P-1 14.5 594.90 I
PVC 9.5 TO 14.5 595.59 585.40 580.40 0.69 P-2 14.5 595.65 1
PVC 9.5 TO 14.5 596.27 586.15 581.15 0.62 P-2D 23.5 595.88 I
Pvc 18.5 to 23.5 596.55 577.38 572.38 0.67 P-3 14.5 595.69 1
PVC 9.5 TO 14.5 596.26 586.19 581.19 0.57 P-4 14.5 1
PVC 9.5 TO 14.5 597.14 P-4D 27.0 596.46 1
Pvc 22 to 27 599.22 574.46 569.46 2.76 1P-5 15.0 1
PVC 10 to 15 597.06 P-51D 27.0 596.34 1
PVC 22 to 27 599.37 574.34 569.34 3.03 P-6 14.5 1 1 PVC 9.5 to 14.5 597.85 P-7 14.5 599.77 1
PVC 9.5 to 14.5 600.24 590.27 585.27 0.47 P-8 14.5 595.49 1
PVC 9.5 to 14.5 596.24 585.99 580.99 0.75 P-9 14.5 598.55 1
PVC 9.5 to 14.5 599.19 589.05 584.05 0.64 P-10 14.5 596.08 1
PVC 9.5 to 14.5 596.58 586.58 581.58 0.50 P'-li 14.5 595.19 1
PVC 9.5 to 14.5 596.23 585.69 580.69 1.04 P-12 14.5 595.56 1
I'VC 9.5 to 14.5 596.13 586.06 581.06 0.57 ClA 1841 l'remnit.ation 3-TI
DRAFTr Page5 of 6 TABLE 1 MONITORING WELL CONSTRUCTION SPECIFICATIONS EX ELON G EN ER\\A
-i ONfi BRAIDWOOD STATION Well Boring Ground Well Well Screen Top of Riser Screen Top Screen Bottom Stick Numnber Total D~epth Surface Diameter MAaterial Interval Elevation Elevation Elevation lip (ft B1GS)'
(NGYVD) 2 (inches)
(ft BGS)
(NGVD)
(NGVD)
(NGVD)
(ft AGCS) 4 P-13D 27.0 596.11 1
PVC 22 to 27 598.76 574.11 569.11 2.65 1'-14 15,5 1
PVC 10.5 to 15.5 P-14D 28.0 1
PVC 23 to 28 D-1 15.(
599.64 1
PVC 10 to 15 603.69 589.64 584.64 4.05 D-1D 27.0 599.82 I
PVC 22 to 27 603.77 577.82 572.82 3.95 D-2 15.0 598.78 1
PVC 10 to 15 601.92 588.78 583.78 3.14 D-2D 27.0 598.65 1
PVC 22 to 27 601.47 576.65 571.65 2.82 D-3 15.0 599.00 1
PVC 10 to 15 602.48 589.00 584.00 3.48 D-3D 27.0 598.91 1
PVC 22 to 27 602.22 576.91 571.91 3.31 D-4 15.0 598.48 1
PVC 10 to 15 602.55 588.48 583.48 4.07 D-5 15.0 598.58 1
PVC 10 to 15 602.27 588.58, 583.58 3.69 S1-14.5 594.99 1
PVC 9.5 to 14.5 595.60 585.49 580.49 0.61 S-ID 28.0 1
PVC 23 to28 4
S-2 14.5 592.72 1
PVC 9.5 to 14.5 593.32 583.22 578.22 0.60 S-2D 23.5 592.72 1
PVC 18.5 to 23.5 593.98 574.22 569.22 1.26 S-3 14.5 592.65 1
PVC 9.5 to 14.5 593.37 583.15 578.15 0.72 S-4 14.5 594.23 1
PVC 9.5 to 14.5 594.63 584.73 579.73 0.40 3-4D 24.5 1
PVC 19.5 to 24.5 9-5 14.5 592.76 1
PVC 9.5 to 14.5 593.44 583.26 578.26 0.68 3-6 14.5 594.99 1
PVC 9.5 to 14.5 595.57 585.49 580.49 0.58 5-7 13.6 1
PVC 8.6 to 1.336 t
4 5-7D 27.5 1
PVC 22.5 to 27.5 G-1 14.5 590.70 1
PVC 9.5 to 14.5 595.35 581.20 576.20 4.65 G-2 14.5 590.24 1
PVC 9.5 to 14.5 590.82 580.74 575.74 0.58 G-2D 24.0 1
PVC 19 to 24 G-3 14.5 592.34 1
PVC 9.5 to 14.5 592.93 582.84 577.84 0.59
-I 14.0 595.27 1
PVC 9 to 14 596.25 586.27 581.27 0.98 F-1 D 24.0 595.27 1
PVC 19 to 24 596.19 576.27 571.27 0.92 CRA Th841 I'Pt.strii-itj 1 3-Tl
DRAFT PaTge6of6 TABLE 1 MONITORING WELL CONSTRUCTION SPECIFICATIONS BRAIDOLDL -NR.
A -J I O N BRAIDWOOD STATION Well Boring Number Total Depth (ft BGS)
F-2D F-3D F-4D F-51)
F-6D F-7D 14-8D)
C-1 C-ID C-2 C-21)
A-I A-ID 25.0 25.0 29.5 27.0 27.5 28.0 26.0 14.0 24.0 15.5 27.5 15.0 25.0 GroundI Surface (NG VD) 2 594.05 594.59 595.00 595.00 59.0
- 4 Well Diameter (inches)
I 1
I I
1I 1
I 1
1 1
1 Well Screen Material Interval (ft BCS)
Top of Riser Elevation (NOVD) 597.26 597.36 It Screen Top Elevation (NGVD) 574.05 544.59 Screen Bottom Elevation (NGVD) 569.05 539.59 Stick Up (ftAGS) 4 3.21 2.77 PVC PVC PVC PVC PVC PVC PVC PVC PVC PVC.
PVC PVC PVC 20 to 25 20 to 25 24.5 to 29.5 22 to 27 22.5 to 27.5 23 to 28 21 to 26 9 to 14 19 to 24 10.5 to 15.5 22.5 to 27.5 10to 15 20 to 25 595.78 595.87 586.00 576.00 581.00 571.00 0.78 0.87
.F Notes
' ft BGS - feet below ground surface 2 NGVD - National Geodetic Vertical Datum 3 PVC - polyvinyl chloride above ground surface 5 Abandoned ground surface not yet shot, survey data incomplete
.CRA U1841 Presentalion 3-TI
DRAFT Pagc 'l of 4 TABLE 2
SUMMARY
OF TRITIUM RESULTS IN MONITORING WELLS EXELON GENERATION BRAIDWOOD STATION Location A-1 A-ID E;L-01 E1,-02 E.L-03 E;L-04 E;L-05 E L-06 E L-07 EL-os E-L-09 El.-09D EL-10 EL-1OD EL-l1 EL-ilD EL-12 EL-12D fL-13 BL-13D
'13L-14 BL-1i4D BL-15 BL-15D Bl -16 BL-16D 13l,-17 Bl.-17D BL-18 BL-19 Bl.-20D C-1 C-ID C-2 C-2D C-I E-1 D C-2 G-2D 1D-3 0-3D C-4 C-5 Ditch at Culvert Ditch by Alpha Gate F*1 F.] D Sanmple Name GWO11106-MB-A-I GWO11106-MB-A-ID GW-111705-]K-BL-0l GW-111705-JK-BL-02 GW-111805-JK-BL-15 GWV-111805-JK-BL-14 GW-111805-JK-BL-13 GW-111805-iK-BL-12 GW-111805-JK-BL-1l GW-111805-JK-BL-10 GW-012506-JL-BL-9 GIV-012506-JL-BL-9D GW-010406-JL-BL-10 GW-010406-Jl,-BL-10D GW-010306-iL-BL-I1 GW-010306-JL-BL-I ID GW-010306-jL-BL-12 GW-010306-JL-B[,-12D GW-010306-Jl.-BL-13 GW-010306-J.-BL-13D GW-010306-JL-BL-14 GW-010306-Jl,-BL-14D GW-010306-JL-BL-15 GW-010306-JL-BL-15D GIV-010306-JL-BL-16 GW-010306-JL-BI-16D GWV-010306-JL-BL-17 GW-010306-JI.-BL-17D GWV-120105-DS-BL-18 GW-120105-DS-BL-19 GW-010406-JI.-BL-20D GW-010306-Jll-C-1 GW-010306-JL-C-1 D GW-012406-MB-C-2 GW-012406-MB-C-2D GW-010406-J],-D-1 GIV-010406-JL-D-I D GW-010406-JL-D-2 GWV-010406-JL-D-2D GW-010406-11..-D-3 GW-010406-JL-I)-3D GIV-120605-JRB-D-4 GWV-120205-MK-D-5 Ditch at Culvert~12/22/0O Ditch by Alpha Gate-01/12/06 GW-010306-JL-F-1 GI'V-010306-JL-F-l D Sample Date 1/11/2006 1/11/2006 11/17/2005 11/17/2005 11/18/2005 11/18/2005 11/18/2005 11/18/2005 11/18/2005 11/18/2005 1/25/2006 1/25/2006 1/4/2006 1/4/2006 1/3/2006 1/3/2006 1/3/2006 1/3/2006 1/3/2006 1/3/2006 1/3/2006 1/3/2006 1/3/2006 1/3/2006 1/3/2006 1/3/2006 1/3/2006 1/3/2006 12/1/2005 12/1/2005 1/4/2006 1
/3/2006
'I /3/2006 1/24/2006 1/24/2006 1/4/2006 1/4/2006 1/4/2006 1/4/2006 1/4/2006 1/4/2006 12/6/2005 12/2/2005 12/22/2005 1/12/2006 1/3/2006 1/3/2006 3H-Tritimnh (pCilL) 33 60 70 156 0
40 102 114 39 90 4809 20383
-104 7535 13
-27
-39
-35
-16 9
-37
-91 146
-49 3364
-91
-44
-126 108 37
-117
-80
-140
-48 147
-13
-141
-165
-36
-16S 5110 91 73 1007
-30
-44
-56 CRA 1.,b41 PrvnlJ.s n 3 - rT.
DRAFT DPage 2 of 4 TABLE2
SUMMARY
OF TRITIUM RESULTS IN MONITORING WELLS EXELON GENERATION BRAIDWOOD STATION Location FI-2D F-3D r-4D F-5D F-6D F-7D F-8D G-1 G-2 C;-3 lW-lol.
MW-101 MIV-102 MIW-103 MIW-103 MIW-104 MW-105 htW-105D MIW-106 MW-106D hMW-107 MlW-los MIW-109 NIW-110 NIW-Il l MW-l IID MW-112 NIW-112D NlW-113 NMW-113D P-l P-10 P-li P-12 P-13D P.14 P-14D P-2 P-2D P.3
['4 P4V PS5 P-5D P-6 P-7 r.8 Sample Name GWV-01 1206-MB-F-2D GV-01 1206-MB-F-3D GWV-012406-MB-F-4D GWl/-012406-MB-F-5D GWV-012406-MB-F-6D GWV-012406-MB-F-7D GIV-012406-MB-F-SD GW-120605-JL-G-1 GW-120605-JL-G-2 GW-120605-11,-G-3 GW-111505-JK-17-Dup GW-111505-JK-17 MW-102 GW-111505-JK-13-Dup GW-111505-JK-13 MW-104 GW-010406-JL-MW-105 GW-010406-JL-MW-105D GW-010406-JL-MW-106 GW-010406-JL-MW-106D GW-111605-JK-1 9 GW-111605-JK-20 GW-093005-DC-03 GW-010406-JK-MWI IO GW-010406-JL-MW-111 GWO1 0906-MB-MWI bilD GW-010406-JL-MW-112 GW010906-MB-MW112D GWV-010306-JL-MW-113 GW-010306-JL-MW-1 13D GW-120105-DS-1-1 GIWV-120605-iL-P-10 GW-120605-JL-P-I I GW-120605-J.-'- 12 GW-012506-JL-P-13D GW-012406-MR-P-14 GW-012406-MB-P-14D GWV-010306-JL-P-2 GIV-010306-)L-P-2D GW-120205-MK-P-3 GIV-012506-JiL-P-4 GWV-012506-JL-P-4D GW-010306-]L-P-5 GCV-01 0306-JL-P-5D GW-01 1806-MB-P-6 GW-1201 05-DS-P-7 GW-120605-jL-P-S Sampl' Date 1/12/2006 1/12/2006 1/24/2006 1/24/2006 1/24/2006 1/24/2006 1/24/2006 12/6/2005 12/6/2005 12/6/2005 11/15/2005 11/15/2005 3/24/2005 11/15/2005 11/15/2005 7/28/2005 1/4/2006 1/4/2006 1/4/2006 1/4/2006 11/15/2005 11/15/2005 9/30/2005 1/4/2006 1/4/2006 1/9/2006 1/4/2006 1/9/2006 1/3/2006 1/3/2006 12/1/2005 12/6/2005 12/6/2005 12/6/2005 1/25/2006 1/24/2006 1/24/2006 1/3/2006 1/3/2006 12/2/2005 1/25/2006 1/25/2006 1/3/2006 1/3/2006 1/18/2006 12/1/2005 12/6/2005 3H-Tritintn (pCiIL) 546 1689
-22 1512 689 575 872 133 87 81 162 157 58 1970 2497 142 169
-120
-35
-25 269 91 305
-104
-78
-66
-127
-111 4008 4772 2484 1723 1476 1622 217122 2537 238S 2045 2384 3258 9588 38965 6166 2165 110 1210 2212 CRA T~]Pe5et11.'
DRAI:T Page 3 of 4 TABLE 2
SUMMARY
OF TRITIUM RESULTS IN MONITORING WELLS EXELON GENERATION BRAIDWOOD STATION I.ocation 1-9 r-9 rW-6P I*:W-2 rI;W-2 I;W-2 rF:W-3 F:W-4
'-I S-2 5-2D S-3 5-4 8-5 S-6 8-7 S-7D SG-1 SG-2 SG-3 sw-I SW-2 SW-3 SW4
\\'B-1 V1Wl-11D N'B-1-2 V1B-1-2D VB-1-3 V8-1-3D V\\B-14 VB-1 -4D
\\VB-1-5
\\ B1-5D VB-1 -6 VB-l-6D VB-1-7 VB-l -70 VB-1-8 V B-1-8)
VB-1-9 VyB-1 -9D V B-2-1 VB-2-2 VB-2-2D Sample Name GW-121305-Jl,-P-9-recount
(,W-121305-Jl,-Y-9 Pond-12/08/05 RW-1 -12/04/05 GW-121305-JL-RW2@20' GW-I21305-JL-RW2G25Y GW-121305-J.-RW2&10' GW-120205-Jl,-RW-3 GW-120205-JL-RW-4 GW-120605-JL-S-1 GW-010306-JL-S-2 GW-010306-JL-S-2D GW-120605-JL-S-3 GW-120605-JL-S-4 GW-120605-JL-S-5 C;W-120605-JL-S-6 GIV-012406-MB-S-7 GIV-012406-MB-S-7D SG-1 SG-2 SG-3 Lake #1-11/30/05 GW-012506-J L-SW-2 GW-120205-NW-FTL-Lake GW-120205-SE-FTL.- Lake VB-1-05/27/2005 GIV-010406-JL-VB1-1 GW-010406-JL-VBI-ID GWV-l11705-JK-VB1-2 GW-01 1306-MB-VB1-2D GW-1 1605-DC-VBi1-3 GW-01 1306-MB-VBI -3D)
GW-111605-DC-VBl-4 GW-011306-MB-VBI-4D GW-111605-DC-VB1-5 GW-01 1.306-JL-VB I-5D GW-112205-J.-VB1-6 GW-011306-JL-VB1-6D GW-112205-JI..-VBI-7 GWa10906-MB-VBI -7D GW-11I2205-L-VB I-8 GWI010906-MB-VBi -SD GW-1 12205-JL-VB1-9 GW-011306-MF-VBI-9D GW-1 I 1505-DC-VB2-I -Dup GW-010406-JL,-VB2-2 GW-010406-JL-VB2-2D Sample Date
- 12/13/2005 12/13/2005 12/8/2005 12/4/2005 12/13/2005 12/13/2005 12/13/2005 12/2/2005 12/2/2005 12/6/2005 1/3/2006 1/3/2006 12/6/2005 12/6/2005 12/6/2005 12/6/2005 1/24/2006 1/24/2006 7/28/2005 7/28/2005 7/28/2005 11/30/2005 1/25/2006 12/2/2005 12/2/2005 5/27/2005 1/4/2006 1/4/2006 11/17/2005 1/13/2006 11/15/2005 1/13/2006 11/15/2005 1/13/2006 11/15/2005 1/13/2006 11/22/2005 1/13/2006 11/22/2005 1/9/2006 11/22/2005 1/9/2006 11/22/2005
] /13/2006 11/15/2005 1/4/2006 1/4/2006 3H-Tritirtt (pCiIL) 27 111 142 7855 171166 246442 54111 197 380 83 62
-2 57 1086 1874 411 1373 1546 61.3 1970
-21.4 2464 2441 96 83 51295 425
-132 337 238 206 19431 384 7424 130 22928 95 41 140
-116 57 10877 107 3370 2.38 5232 4037 CRA Iw$41 Pre..nuti >n 3 T'
DRAFT Page 4 of 4 TABLE 2
SUMMARY
OF TRITIUM RESULTS IN MONITORING WELLS EXELON GENERATION BRAIDWVOOD STATION l.ocation
\\'B-2-3 V'B-2-3 AIB-2-4
\\B-2-4 V'B-2-5
\\'13-2-5D
\\'B-2-6 A'B-2-6D VIB-2-7
\\'13-2-7D VB-2-8
'IB-2-9 VB-2-9D V'B \\'B-3-1 VB-3-1 A'EW3-10 V'B-3-l0D VB-3-2 V'B-3-3 VB3-34D
\\'B-3-5 VB-3-6 VB-3-7 V'B-3-7D
\\'B-3-8 V'B-3-9D Sattmple Name GW-1 11505-VC-VB2-3-Dup GW-1 11505-DC-VB2-3 GW-1 11505-DC-VB2-4-Dup GWV-111505-DC-VB2-4 GW-010306-JL-VB2-5 GW-010306-JL-VB2-5D GW-010306-JA-VB-2-6 GW-010306-JL-VB-2-6D GW-010406-JL-VB2-7 GW-010406-J[.-VB2-7D GIV-121405-JS-VB-2-8 GW-01 1206-MB-VB2-9 GWV-011206-MB-VB2-9D VB-3-05/11 /2005 GW-111505-DC-VB3-1 GW-1 11505-DC-VB3-1 -Dup GW-010306-JL-VB3-10 GW-010306-JI -VB3-lOD GW-111505-DC-VB3-2 GW-1 11605-DC-VB3-3 GW-010306-JL-VB3-4 GW-010306-JL-VB3-4D GW-112205-JL.-VB3-5 GW-112205-JL-VB3-6 GVV-010306-jL-VB33-7 GW-010306-JL-VB3-7D GW-120205-MK-VB-3-8 GW-010406-JL-VB3-9D Sample Date 11/15/2005 11/15/2005 11/15/2005 11/15/2005 1/3/2006 1/3/2006 1/3/2006 1/3/2006 1/4/2006 1/4/2006 12/14/2005 1/12/2006 1/12/2006 5/11/2005 11/15/2005 11/15/2005 1/3/2006 1/3/2006 11/15/2005 11/16/2005 1/3/2006 1/3/2006 11/22/2005 11/22/2005 1/3/2006 1/3/2006 12/2/2005 1/4/2006 3H-Tritiurn (pCilL) 3460 3940 3350 3664 3834 102 1412 44
-60
-53
-103 78
-65 1521 5959 5460 12076 108736 32830 43894 29286 790 95 53572
-126
-205 171 19605 CRA lN8SII P'n~mtatin3-T2
DRAFT Page l of 1 TABLE 3
SUMMARY
OF TRITIUM RESULTS AT PRIVATE WELLS EXELON GENERATION BRAIDWOOD STATION Location Sample Date 3H-Tritiumn (pCiIL)
PW-1 11/30/2005
-26 PW-2 11/30/2005 48 PW-3 11/30/2005 25 PW-4 12/2/2005 43 PW-5 1/19/2006
-12 PW-7 12/7/2005
-58 PW-8 12/8/2005 1367 PW-9 12/5/2005 142 PW-10 12/7/2005 72 PW-ll 12/5/2005 99 PW-12 12/7/2005 44 PW-13 12/7/2005
-62 PW-14 12/14/2005
-118 PW-15 12/14/2005
-51 CRA ItbS41 P'rewn;tieo 3-1 3
A MN in1 DRAFT
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BRAIDWOOD STATION BRACEULE. ILLINOIS SrTE SPECIFIC HYDROGEOLOGIC PROFILE JANUARY 2006 (A-A)
COOKST044A-WVERI A ABSOCATEI I,=
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EXISTING FENCE LINEIAPPROXIMATE PROPERTY LINE EXISTING PERIMETER DITCH LIMITS FEEDER DITCH BLOW DOWN LINE DEEP BLOW DOWN LINE SAMPLING LOCATION VACUUM BREAKER LOCATION DEEP VACUUM BREAKER SAMPLING LOCATION DEEP MONITORING WELL LOCATION PRIVATE WELL LOCATION DEEP TEMPORARY WELL LOCATION POND SAMPLING LOCATION DEEP RECOVERY WELL LOCATION TRITIUM RESULT IN GROUNDWATER TRITIUM CONTOUR TRITIUM RESULTS 200,000 TO 250,000 (PICOCURRIESILITER)
TRITIUM RESULTS 100,000 TO 200,000 TRITIUM RESULTS 60,000 TO 100,000 TRITIUM RESULTS 40,000 TO 60,000 TRITIUM RESULTS 20,000 TO 40,000 TRITIUM RESULTS 10,000 TO 20,000 TRITIUM RESULTS 5,000 TO 10,000 TRITIUM RESULTS 200 TO 5,000 lJ lTRITIUM RESULTS 0 TO 200 DRAFT NOTE:
BACKGROUND TRITIUM CONCENTRATION-200 PCI/L DRINKING WATER STANDARD FOR TRITIUM: 20,000 PCI/L TRITIUM DATA FOR SAMPLES COLLECTED THROUGH JANUARY 25, 2006. CONTOURS WERE GENERATED USING LOG VALUES.
figure 5 ESTIMATED TRITIUM RESULTS DEEP GROUNDWATER ZONE BRAIDWOOD STATION Brace vile, Illinois 16a41-00(PRES003)GN-WA007 JAN 30/2006
0 200 600fd I /
( 35 0
' ("3) t i
i1 j
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A j
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LEGEND:
EXISTING FENCE LINEIAPPROXIMATE PROPERTY LINE EXISTING PERIMETER DITCH LIMITS FEEDER DITCH BLOW DOWN LINE i: -
SHALLOW BLOW DOWN LINE SAMPLING LOCATION v<Il A VACUUM BREAKER LOCATION VB-3-7 A VACUUM BREAKER SAMPLING LOCATION M
M TRITIUM RESULTS 200,000 TO 250,000 (PICOCURRIESILITER)
Ef=
TRITIUM RESULTS 10,000 TO 200,000 TRITIUM RESULTS 60,000 TO 100,000 TRITIUM RESULTS 40,000 TO 60,000 TRITIUM RESULTS 20,000 TO 40,000 TRITIUM RESULTS 10,000 TO 20,000 TRITIUM RESULTS S,000 TO 10,000 TRITIUM RESULTS 200 TO 5,000 TRITIUM RESULTS 0 TO 200
,I,v-0C P-11 0 PSG- (A e,S '.. ti SW-2 © R.
0-3 N
f'tA.l i', f0.
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SHALLOW MONITORING WELL LOCATION PRIVATE WELL LOCATfON SHALLOW TEMPORARY WELL LOCATION STAFF GAUGE LOCATION DITCH SAMPLING LOCATION SURFACE WATER SAMPLING LOCATION SHALLOW RECOVERY WELL LOCATION POND SAMPLING LOCATION NOTE:
BACKGROUND TRITIUM CONCENTRATION: 200 pCi/L DRINKING WATER STANDARD FOR TRITIUM: 20.000 pCUL TRITIUM DATA FOR SAMPLES COLLECTED THROUGH l~Il I---
C 21IR lT IDC UAT USING LOG VALUES.
figure 4 ESTIMATED TRITIUM RESULTS SHALLOW GROUNDWATER ZONE BRAIDWOOD STATION Brace vile, //inois DRAFT 16841-00(PRES003)GN-WADD6 JAN 3012D06
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BRACEILE, ILLINOIS AVRAG GR'OU BNDATER CONTOURS i;
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