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J <br /> .00x <br /> r <br /> ISC Winery, 1 West Turner Road, Lodi, California (page 2) <br /> Describe the methodology by which both the,. lateral and'=::vertical <br /> extent of soil contamination will' be determined. "Describe*the <br /> sampling plan for monitoring the existing wells on site. <br /> Total Extractable Petroleum Hydrocarbon (TEPH) analysis by GC/FID <br /> methodology is required for both water and soil samples. Total <br /> Petroleum Hydrocarbon (TPH), EPA method #418 is not sufficient. <br /> Additional monitoring wells (2) will need to be placed down"gradient <br /> of the tank excavation and in the tank excavatian to monitor the <br /> groundwater duality downgradient, and to assess the soil/groundwater <br /> quality at the excavation. The monitoring well to be -placed in. the <br /> tank excavation may ..be precluded by removing contaminatd soil to <br /> groundwater in this area. „ <br /> The zero line of soil contamination has not been established in the <br /> r� area of soil boring # 4 due to the odor noted in a sbil sample taken <br /> i. at depth. Describe why a monitoring well was not installed at this <br /> location. <br /> The District has completed the review of the GTI report for the <br /> subject site. Please submit the additional data requested to this <br /> office and the Central Valley Regional Water Quality Control Board <br /> within 60 days from the date of this letter. <br /> Please contact David Carls of my staff at (209) 468-3440 should you <br /> have any questions regarding this matter. <br /> Jogi Khanna, M.D., M.P.H. <br /> District .He th Officer <br /> Ron Vali oti, R.S., Director <br /> Environmental Health Division <br /> RV/LC:dc (DC0628-1) <br /> cc: Dennis Bane, GTI <br /> CVRWQCB <br />