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California Regional Water Quality Control Board <br /> Central Valley Region <br /> Robert Schneider,Chair Gray Davis <br /> Winston H.Hickox Governor <br /> Secretaryfor Sacramento Main Office <br /> Environmental Internet Address: http://www.swrcb.ca.gov/mgcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> 60 '1 Wd OZlnr 14 <br /> 19 July 2001 <br /> tilt I`1a1W <br /> Mr. Mark Adams <br /> Lincoln Center Environmental Remediation Trust <br /> Point Environmental <br /> 137 Park Place <br /> Richmond, CA 94801 <br /> REVIEW OF PROPOSED REVISIONS TO GROUNDWATER MONITORING AND REPORTING <br /> ACTIVITIES,LINCOLN VILLAGE CENTER, STOCKTON, SAN JOAQUIN COUNTY <br /> We have reviewed the 8 January 2001 Proposed Revisions to Periodic Groundwater and NPDES <br /> Monitoring and Reporting Activities (Proposed Revisions) submitted by LFR Levine Fricke (LFR) for <br /> the Lincoln Center Environmental Remediation Trust(Lincoln Center). The Proposed Revisions <br /> requests to reduce the sampling frequency listed in the 15 October 1999 Periodic Groundwater <br /> Monitoring Plan, Lincoln Center, Stockton, California, and change the dates that the quarterly system <br /> update of the National Pollutant Discharge Elimination System (NPDES) Permit No. CA 0084255 is <br /> due. <br /> mow• • s�ev" a�`t <br /> We have the following„e .:$tI <br /> 1. NPDES Permit No. CA 0084255 is a Board Order and can only be modified through the issuance <br /> of a new permit issued by the Board. Therefore,we cannot grant the request to modify the <br /> NPDES report submittal deadlines. <br /> 2. Table 1 of the Proposed Revisions does not list 10 wells that are currently sampled on a quarterly <br /> or biannual basis and the text does not discuss why these wells are not included in the <br /> recommended monitoring frequency. <br /> 3. We concur with a majority of the proposed revised sampling schedule. However, we think that <br /> the sampling should continue to be quarterly based on inconsistent results in many of the wells, <br /> and location of some of the wells providing valuable data for plume migration and treatment <br /> system effectiveness. We have modified some of the quarterly sampling locations to biannual <br /> and annual. The Proposed Revisions decreases the current 210 samples a year to 117 samples a <br /> year, assuming that the 10 wells not listed are sampled triannually(biannual for COS #11). The <br /> attached table with a recommended sampling schedule proposes 130 samples a year. <br /> California Environmental Protection Agency <br /> ra Recycled Paper <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. <br /> For a list of simple ways you can reduce demand and cut your energy costs,see our Web-site at http://www.swrcb.ca.gov/rwgcb5 <br />