ML051470098
| ML051470098 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 04/30/2002 |
| From: | Luebke P State of WI, Dept of Natural Resources |
| To: | Hellman E Office of Nuclear Reactor Regulation, Wisconsin Energy Corp |
| References | |
| Download: ML051470098 (2) | |
Text
1j002 05/25/2005 17:27 FAX
%:4 co IN L(DEPT. OF NATURAL RESOURCES State of Wisconsin I DEPARTMENT OF NATURAL RESOUF CES apott McCalium, Governor DarTUll Bazzalc, Secretary 101 S. Webster St.
Box 7921 Madson. Wisconsln 53707.7921 TQIephone H68-2i6-2621 FAX 608-267.3573 TY 608-287.6897 April 30, 2002 Elizabeth Hellnan. P.E.
Wisconsin Energy Corporation 231 West Michigan Milwaukee, WI 53290-0001
Subject:
Point Beach Power Plant WPDES Permit WI-0000957-6 Abandonment Plan for Wastewater Retention Pond
Dear Ms. Hellman:
We are approving the abandonmect plan for the wastewater retention pond located at the Point Beach Nuclear Power Plant The plan was reviewed for compliance wit the abandonment requirements contained ins. NR213.07, Wis. Admn. Code. The plan was preparcdby GeoSyntec Consultants and Elizabeth Hellman, and was received for approval on March 13, 2002. The information provided was thorough and provided all the necessary documenation. The following is our understanding of the abandonment plan.
Desien Infomnoion Retention Pond NR213 Evaluation Retention Pond Sediment The pond, with dimensions of 140 feet by 95 feet, was constructed in 1968. It received wastewater from a variety of sources including the sanitary treatnent plan; turbine ball sumps, facade slunps, and discharges from the potable water treatment system. The pond provided stspended solids removal by gravity sedimentation.
Abandonment of the wastewater retention pond is necessary because Its storago capacity has been reduced by the accumulation of 5 feet of sediment. It has been replaced by a new filtration system that was approved January 31, 2000, which will now provide suspended solids removal.
The retention pond was reviewed for compliance with the design requirements for industmial wastewater lagoons and groundwater quality standards, The report concluded ihe waters of the state were not adversely impacted by the retention pond. The retention pond was granted an exemption from the ninimUm separation from groundwater and was approved for continued use April 10, 1996.
Because the sediment has not adversely impacted groundwater quality, and testing confirmed it does not contain concentrations of containants at levels of concern, the sedimert in the retention pond may be disposed of in place. Approximately 2000 cubic yards of www.dnr.MT*.w1. u3 w~vw.wfqconsln.vcv auelity N:aral FResources Managamenr
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a OO3 05/25/20D5 17:27 FAX Page 2 scdiment will be stabilized with a cement mix and covered with 2 foot of soil and 0.5 feet of topsoil. Any residual contamination levels of mdionuclides will be less than the NRC decommissioning guideline. The retention pond had previously bcen dredged and conftols were implemented at the power plant after 1975 that reduced the presence ofradionuclides in the sediment Werland Soil Removal Prior to 1975, before the effluent was discharged with the cooling water to L.ake Michigan, effluent from the retention pond was allowed to run overland and absorb into the soil in a wctlanwd area.
Analysis of the soil outside of the etention pond indicates there is some contamination wzth radionuclides exceeding NRC standards.
An estimated 230 cubic yards of soil is impacted. Soil with concentrations of radionuclides greater than 1 0 pCi/g will be removed in containers and taken to a licensed facility.
Site Grading Erosion control Chapter 30 Permit The retention pond site uVi be graded to prevent the accumulation of any water. The arca will be re-vegetated with native grasses.
The retention pond abandonment and wetland soil removal work involves an area about one acre is size. A storm water construction permit is not required if less than S acres of ground surface is disturbed. The plan Includes runoff controls such as slit fences around the work areas. Questions on storm water permitting may be referred to Cheryl Bougie in the Northeast Region (920-448-5141).
An application was made for a chapter 30 permit March 20, 2002, for work in and around the wetland area. Mike 2anaway in the Mishicot Service Center will be handling that permitting if needed (920-7554942).
If you have any questions, please call me at 608-266-0234.
Sincerely, Paul W. Luebkce, P.H.
Wastewater Permits and Prtreatment Section Bureau of Watershed Management copy: Duane Schuettpelz - WT/2 David Gerdman - NortlheastRegion Mike Hanawey - MNisbicot Scrvicc Center Cheryl Bougie -Northeast Region a r^.
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