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contained 20 ug/L MTBE MWl l is cross gradient of R603 and has always been below laboratory . detection lunits for TPHg,BTEX. Ethylene Dibromide (EDB) analysis was performed during the initial sampling of the groundwater monitoring wells, May 1989 and on sod samples during the UST removal EDS has always tested below laboratory lower detection limits. In March 1994, the possibility of 1,2 dichloroethylene being present was examined in MW 1, MW6, MW9 and MW 11, all with results below the lower detection limits. All analytes tested (including DCA and DCE) using EPA methods SW 845 and methods 5030/8010 were below laboratory lower detection 5. The quarterly groundwater monitoring has not been conducted since January 3999. At the request of Wickland Properties and to comply with Sari Joaquin County Health oversite, Western Geo-Engineers sample raof'�site w ells show TPHg atwells on 7 r 1 000 uglL MW-8, benzene2000. The mND, um groundwater monitoring results toluene at 43 ug/L MW-8, ethylbenzene at 260 ug/L MW-8, es at ,400 g/Lfor M anal -8 and MTBE at 38 ug/L MW-11. MW12 was belowlaboratory lower detection limytes tested except TPHg at 81 ug/L. MW-8 was below laboratory lower detection limits for benzene, and MTBE aril MW-11 contained only MTBE Off-site wells MW5, MW6, MW7 and MW9 are all below laboratory lower detection limits fromall analytes free phase tested product to belawter labQrator�y ower tion levels beneath the site have been MW3 and detection limits for TPHg, Benzene, Toluene, Ethyl Benzene, and Xylenes for MW1, MW4. MW2, located in low conductivity portioXof ta aquifer, ins�840 tains ug/L �g/1-,TPHg Toluene, 12 ug/L Ethyl Benzene and 120 ug/L Y ug/L Ethyl Benzene and 40 ug/L Xylenes Other CRWQCB-CVR concerns voiced in the July 18, 2000 Nonconcurrance letter. TABLE 1 w CHECKLIST OF REQUIRED DATA FOR NO FURTHER ACTION REQUESTS AT UNDERGROUND TANK SITES. This checklist contains 15 items of which concerns were voice for items 4 , 8 , 9 , and 13 The following portion of this report address these items. Item 4. No- Excavated soils associated with the UST's were retumed to the tank Pit A letter from Applied GeoSysteins to Jackson Road Landfill, Sacramento County documents that an estimated 550 cubic yards of soexcavated Conractors on November 2 aridtransported,�98g d disposed at ej Jackson Road Landfill by Town& Country 4 R-603 Jan 2001