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i <br /> Alfred Kroger <br /> Page .2 <br /> depth to groundwater at this site was measured to be about 20 <br /> feet below grade (a rise of about 7 feet, since December 1994) . <br /> In September 1995, when the excavating was performed water should <br />+ have been entering the hole when a depth', of 20 feet was reached. <br /> There was a strong petroleum odor to the'„ soil to the bottom of <br /> the excavation which was about 32 to 33 feet deep. It was not <br /> until the second day of the excavating that groundwater appeared <br /> in the bottom of the excavation. This confirmed that the clayey <br /> and silty soil was of low permeability and not conducive to other <br /> remedial alternatives . <br /> In reference to the solvents at this site . One of the six tanks <br /> that were located in the tank pit was a 1000 gallon stoddard <br /> solvent tank. Information I have reviewed, including our Local <br /> Oversight Program contract with SWRCB defines stoddard solvent as <br /> a petroleum based substance so cleanup costs associated with <br /> contamination from that tank should be reimbursable. <br /> If you have any questions contact me at '(209) 468-3449 . <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Margaret Lagorio, Lead Senior REHS <br /> Site Mitigation Unit <br /> c : Neumiller & Beardslee - Brooke Birke Esq. <br /> c : SWRCB Cleanup Fund - Nancy Callsen <br /> P.O. Box 944212, Sacramento 94244-2120 <br /> Enc . <br /> i <br /> A <br />