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%NO <br /> Our Lady of Sorrows Chapel <br /> Page 4 <br /> Summary of Ground-Water Information Near the Site (continued) <br /> Date of Measurement, Ground-Water *Ground- Ground- Ground- F'97-S'98 Nitrate(as <br /> Source Depth Water Water Water Flow Seasonal NO,) <br /> Elevation Gradient Direction Fluctuation mg/L,DBCP <br /> Fall 1997,San Joaquin Unknown Unknown Uncertain, Uncertain <br /> County Ground Water possibly <br /> Elevation Map,Plate 5 northwest to <br /> northeast <br /> Spring 1988,San Joaquin Between 0 Uncertain, Uncertain, Uncertain <br /> County Ground Water feet and 10 about 3 to 7 northwest to <br /> Elevation Map,Plate 6 feet ft/mi southwest <br /> July 16,1999 First ground water <br /> Neil O.Anderson& at 17 feet <br /> Associates,Inc., <br /> Percolation Test <br /> July 26,1999 Nitrate-N.D. <br /> Neil O.Anderson& DBCP-N.D. <br /> Associates,Inc. <br /> Note: Elevation of the site is approximately 10 +-above mean sea level. N.D. =not detected. <br /> A water sample was obtained from a nearby well located at 26870 Sacramento Blvd, <br /> Thornton, on July 26, 1999. The sample was submitted to the FGL Environmental Laboratory <br /> and tested for the presence of dibromochloropropane (DBCP) and Nitrate (NO3)per County <br /> _ requirements. A copy of the test results is attached in the appendix. Test results indicate that <br /> DBCP was not detected (ND) and nitrate was not detected (ND). <br /> VI. SOIL PROFILE AND PERCOLATION TEST <br /> The geology of the area is reported to be alluvium of supratidal flood plains consisting of <br /> undivided of alluvial-flood plain deposits.'(Plate 7). The geologic contact to the Modesto <br /> Formation is found about 3/4 miles southwest of the site. The Modesto Formation may exist <br /> below the supratidal flood plain deposits mapped at the location of the site. The Modesto <br /> Formation is composed of compact silt and very fine sand. In the Central Valley, these deposits <br /> are estimated to be as much as 100-feet thick and because of their fine-grained nature would not <br /> ' Atwater,B.E., 1982,Geologic maps of the Sacramento-San Joaquin Delta,California,United States <br /> Geologic Survey map MF-1401. <br /> P DERS0 <br /> s <br /> Z W <br /> P <br /> 4SS0r <br />