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California Re0onal Water Quality Control Board <br /> Central Valley Region <br /> Robert Schneider,Chair <br /> Alan C.Lloyd Ph.D. Arnold Schwarzenegger <br /> Agency Secretary Sacramento Main Office Governor <br /> Internet Address: http://ww .swrcb.ca.gov/—mgcb5 <br /> 11020 Sun Center Drive,#200,Rancho Cordova,CA 95670-6114 <br /> Phone(916)464-3291 •FAX(916)464-4780 <br /> L <br /> 21 July 2005 JuJ 1005 <br /> PER,':' , . T 1JEALTI f <br /> John Scherer ,--11✓ICES <br /> TCN Properties, L.P. <br /> 1481 Manila Road <br /> P.O. Box 317 <br /> Lathrop, CA 95330 <br /> WORKPLANADDENDUM,NORTH LA THROP PROPERTIES,LATHROP, SAN JOAQUIN <br /> COUNTY <br /> Regional Board staff has reviewed the 11 July 2005 Workplan Addendum prepared by ENGEO. The <br /> Addendum was submitted in response to the Regional Board's 15 June 2005 Conditional Approval <br /> Workplan for Groundwater Study. The groundwater monitoring wells are being installed to allow <br /> characterization of groundwater quality prior to submittal of a Report of Waste Discharge. <br /> Staff note that the well locations presented in the Addendum do not in every case, agree with the well <br /> locations presented in Figure 2 of the 20 May 2005 Workplan. To remove any ambiguity of the well <br /> locations,please include the existing well location survey data in the Groundwater Monitoring Well <br /> Installation Report. <br /> The 11 July 2005 Workplan Addendum is acceptable; please proceed with the project tasks. If you have <br /> any questions please telephone me at(916)464-4616. <br /> TIMOTH R. O'BRIEN <br /> Waste Discharge to Land Unit <br /> cc: Margaret Lagorio, San Joaquin County Environmental Health Department, Stockton <br /> Dennis Nakamoto, ENGEO Inc., San Ramon <br /> California Environmental Protection Agency <br /> 0ARecycledPaper <br /> w ISmMO nT oJm iuV chlend DN hem 21 July 03p <br />