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TABLE 2 ANALYTICAL RESULTS GROUNDWATER Carmen Punta Property-Stockton Results reported m pgl t except as voted ' on& Well Number Sampliag TRPH-d TYH-g Grewe Beazm Toluene Ethyl- Xylenes Date (utglf) benzene MW-1 10/01/93 ND NA ND ND ND ND ND 02/06/95 ND NO ND ND ND ND ND 05/09/95 ND ND ND ND ND ND ND MW-2 10/01/93 ND NA NA ND ND ND ND 02/06/95 ND ND NA ND ND ND ND 05/09/95 ND ND NA ND ND ND ND MW-3 10/01/93 ND NA NA ND ND ND ND 02/06/95 ND ND NA ND ND ND ND 05/09/95 ND ND NA ND 0 3 ND ND Reporting 10101/93 50 50 5 mgl P 03 03 03 0 3 Lieut 02/06/95 50 1 5 mgle 03 03 03 03 inµgff 1 05/09/95 1 50 1 50 S mg1P 0 3 03 03 03 001M ' ND Not detected above the laboratory reporting lung NA Not Analyzed MCLS to gg/P benzene-1,toluene=100,ethylbenzene=680,total xylenes=1750 SUMMARY Monitoring wells MW-1, MW-2, and MW-3 were sounded and sampled on May 9, 1995 Utilizing a Keck' interface probe, the WW Irwin, Inc staff geologist intercepted the piezometric surface In the wells at an average depth of 32 25 feet bsg Due to a very wet season, the water table has risen an average of 3 78 feet since the wells were sampled on February 6, 1995 Using the three-point method, the calculated local direction of ground-water flow on May 9, 1995 was approximately S80°E along a gradient of 0 003 foot/foot The flow direction has shifted 17° to the east and south since February 6, 1995 Ground-water samples were collected from the three wells, refrigerated, and received at Sherwood Labs on May 9, 1995 The samples were analyzed for oil & grease, diesel, gasoline, and BTEX constituents. The report of analytical results revealed wholly nondetectable concentrations of all constituents except for toluene, detected fractionally at the reporting limit of 0 3 µgff in the sample collected from MW-3 The next monitoring activity is scheduled for early August, 1995 1 WW Irxgn Inc Project No 33236 00 May 1995