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SOUTHWEST HIDE COMPANY <br /> UN <br /> J 3 01988 <br /> ENTAL <br /> June 28, 1988 ENFERMIT/SERVO SLTH <br /> Jaime Favila <br /> San Joaquin local Health District <br /> P .O. Box 2009 <br /> Stockton, CA 95201 <br /> RE : Underground Storage Tank Closure Plan <br /> Dear Mr . Favila, <br /> As per your request please find enclosed the delivery receipts for the <br /> three UST showing the delivery location. Also enclosed is a map <br /> showing the locations of the monitoring wells that are closest to the <br /> site that housed the three removed UST. <br /> The wells numbered 5, 6 and 7 are made of 2" PVC, threaded-joint, <br /> factory perforated 0 .020" slotted screen with #3 sand pack . These <br /> wells are screened from 10' to 30 ' and groundwater level varies from 9 <br /> to 11 feet below the ground surface. <br /> The wells numbered 1 and 2 are old domestic wells and well number 3 is <br /> the currently used domestic well . Not much is know as to the <br /> construction or depth of these three (3) wells. <br /> The approximate groundwater direction has also been indicated on the <br /> map. The hydraulic gradient appears to be approximately 0 .5%. Because <br /> the monitoring wells (#5,687) are relatively new wells, the data <br /> collected to date is still quite limited and as such, an estimate of <br /> ground water velocity will not be offered at this time. The <br /> groundwater direction, gradient and velocity will be know more <br /> precisely in the future after additional data is collected . <br /> E <br /> 1.IR..IT s.E•0.MFo <br /> IQP fYAPI FM<El1EM3 � <br /> P.O. BOX 2083 MANTECA,CA 95336 209-599-4251 TWX 910-970-5770 FAX 209-599-7343 <br />