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ERM-West, Inc <br /> E',' nrtF�� i e _ 455 Capitol Mall <br /> -U1' f Suite 800 <br /> October 17, 1995 'j 11[:�- Sacramento,CA 95814 <br /> (916)444-9378 <br /> CCT cg P11 j. 2� (916)444-5313(Fax) <br /> Mr Mick Hardin <br /> Manager Environmental Remediation <br /> The Atchison, Topeka, and <br /> Santa Fe Railway Company <br /> 740 East Carnagie Drive <br /> San Bernardino, CA 92408-3571 ki <br /> Subject Quarterly Groundwater Monitoring ERM <br /> at Santa Fe's Scotts Avenue Facility, <br /> Stockton, California - Work Order <br /> No MH-ERMW-ST-9501 <br /> Dear Mr Hardin <br /> This letter transmits the results of quarterly groundwater <br /> monitoring activities conducted by ERM-West, Inc (ERM) in the third quarter <br /> of 1995 at Santa Fe's Scotts Avenue Facility in Stockton, California <br /> Quarterly Status and Activities <br /> On September 20, 1995, ERM personnel measured depth to groundwater and <br /> collected groundwater samples from the three monitoring wells at the Scotts <br /> Avenue Facility underground storage tank (UST) site <br /> Table 1 presents the measured groundwater elevations relative to mean sea <br /> level (MSL) at the three monitoring wells Calculation of the hydraulic <br /> gradient at the site indicates that the water table is relatively flat (hydraulic <br /> gradient = 0 006 ft/ft) with a northeast flow direction A potentiometric <br /> surface map prepared from the groundwater measurements is enclosed with <br /> this letter (Figure 1) The depth to groundwater at the site has not fluctuated <br /> significantly since July of 1995 <br /> Table 1 <br /> Groundwater Elevation - September 20, 1995 <br /> Well ID Casing Elevation Depth to Water GW Elevation <br /> (MSI,) <br /> MW-1 23 89 ft. 54 10 ft -30 21 ft <br /> MW-2 20 70 ft 5137 ft -30 67 ft <br /> MW-3 18 13 ft 48 90 ft -30 77 ft <br /> A member of tK Lx1%lm111nante <br /> Rcsourc«Nlina},IniLnt Crour <br />