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QufkWepMarket No.132 "St Hummer Lane Page2 Stockton,C2ff0rWa%-209 September 23,2008 Ell 8112 in July,2441 Therefore, it must be demonstrated that the vertical went of the contamination has been defined,as well. In October 1990, excavation of contiunina occurred ted soil in the north dispenser island area sample showed 3,500and soil sample QS-2 was call Octed at 10 feet bsg. Analytical results of that milligrams per kilogram(mg/kg)of total petroleum hydrocarbons, This concentration exceeds the SIM Francisco Bay Regional Water Quatijty Control poard Environmental Screening Levels for gross contamination and Indirect exposure, Excavation was PortOymed in November 1990 of the area beneath the storage tanks and the dispensers; however; sampling in the area of Q underground issue S_2 was not Performed. The' ofxem&hVng to"Contamination must be addressed. The Quarterly Gr6jWdW 30,2005,Prepared by A alor Mon'toring Report, Third 0ader 2005 dated September TC Associates jrcorpo;�Ibr the site;rco�n�mended that the site be considered for closure and stated a formal closure=quest wool closure request d d be submitted. A has been obtained have not ba"o Prepared for this site, A large amount of data d for this site. If your consrojtent believes the contamination at this alto has been defined laterally and vertically in soil and groundwater, then a closure report that includes the hems discussed in the CVRWQCB 2W Regional CAddelineg should be report. prepared and the above comments and concerns of the PHD should be addressed I that lr If you have any questions retarding this letter,please contact V1 468-9852 or by email at vmdcartney@9c0hdco'u1. Pki McCartney at(209) Sincerely, �fziaUnit TV- L,Me&erur RMS SiteMitigation Mar oGRPS Program Coordinator j c: Jeffery P. as,PE,ATC Associates Incorporated,6602 Owens Drive,,Pleaeshtou, L California 88 1%ft'James LL:BWO14 PG,California Regional Water Quality Control Board Central Valley R40n' 11020 SUR Center Drive, Suite 200, Rancho Cordova, California 95670;