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I G►.CLU.I N'C • <br /> w` < THOMAS R. FLINN P.O.BOX 1810-1810 E.HAZELTON AVENUE <br /> DIRECTOR �_/lout STOCKTON,CALIFORNIA 95201 <br /> ,?ao } (209) FAX(209)468-2999 <br /> THOMAS M.GAU 'L..001 <br /> RE � (--, <br /> ioDEPUTY DIRECTOR U <br /> MANUEL SOLORIO Warlemgfor YOU FEB 0 8 2005 <br /> DEPUTY DIRECTOR <br /> STEVEN WINKLER ENVIRONMENT <br /> HC <br /> DEPUTY DIRECTOR PERMIT`SEPI✓HEA Til <br /> BENTON ANGOVE February 10, 2005 ES <br /> BUSINESS ADMINISTRATOR <br /> Ms. Kim Schwab, R.G. <br /> Central Valley Regional Water Quality Control Board <br /> 11020 Sun Center Drive#200 <br /> Rancho Cordova, California 95670-6114 <br /> SUBJECT: PLAN TO EVALUATE IMPACTS TO GROUNDWATER AS PART OF <br /> CORRECTIVE ACTION AT THE CLOSED CORRAL HOLLOW LANDFILL <br /> Dear Ms. Schwab: 1 <br /> Attached please find the Plan to Evaluate Impacts to Groundwater as Part of Corrective Action at <br /> the Closed Corral Hollow Landfill. In summary, we propose to dig across the road and drainage <br /> ditch on the east side of the landfill to determine if refuse lies outside of the closure cap, especially <br /> beneath the drainage ditch. Last year's geophysical investigation yielded results that were not <br /> conclusive, but the apparent continuing trends at MW-4 and-5 prompt us to take a more invasive <br /> look. We also propose to sample standing water in the creek to see how much contribution may <br /> be made by runoff from the cattle grazing fields to the south. <br /> If you have any questions, please call me at(209) 468-8504. <br /> Sincerely, <br /> W. MICHAEL CARROLL, PE <br /> Senior Civil Engineer <br /> WMC:mr <br /> NAICorrall Hollow\Groundwater Monitoring\KSchwab04-InvestigationO5.doc <br /> Enclosure <br /> c: R. McClellon,Environmental Health Department <br /> LA 21850 <br />