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ERM-West. Inc. <br /> suite 200•2001 P Street- Sacramento, California 95814-5213 • (916)444-WEST(444-9378) •Telefax (916)444-5313 <br /> mm <br /> 17 December 1991 C U�� U <br /> 0 E C 2 0 1991 <br /> ENVIRONMENTAL HEALTH <br /> Mr. Harlin Kneali„ PERMIT/SERVICES <br /> Environmental Vpalth Specialist <br /> Public Health Services <br /> an'Joaqui:i County <br /> P 0 Box 20C9 <br /> 1601 E Hazelton Avenue', r <br /> Stockton, CA 95201 <br /> wr _ <br /> Subject Quarterly Sampling Pitestrlts of Ground Water from Monitoring <br /> Wells at the Sipe Located at 1033 East Scotts Avenue, Stockton <br /> Bear M; Knoll <br /> Well SFW-1, SFW-2, aiV- SFW-3 were purged and sampled on November 13, <br /> 1991 Table 1 sumrnarLzes groundwater elevatiops measured prior to well <br /> purging and sampling 'The groundwater levels--have fallen approxixnately <br /> 0 35 feet, since the last,measurements were`made in August 19911. The <br /> groundwater flow direction has changed from north to northeast (Figure 1) <br /> 3 <br /> Table I <br /> August 1991 Groundwater Elevations <br /> Well # Casing Elevation GW Elevation <br /> t . <br /> SFW4 +23 89 ft -36 68 ft <br /> SFW-2 +20 70 ft -3719 ft <br /> SFW-3 +18 13 ft -37.16 ft <br /> Teflon bailers were used to puxgQAhe w�N prinor to sampling,: The bailers <br /> �v`ere deconta,�wpated prior to purging each ,well by washing with an <br /> Alconox soluta¢iYrt*4nd triple riming with deionizedr vrater , Each monitors=ng <br /> well was developed ley bailing'tntil l'�onsecutivq conductivity, pH, and <br /> temperature rneasurenf�nts varied may,,less tha;iY 10%. Table 2 summarizes <br /> F the number of well V'oluaies remal d from each well prior to sampling and <br /> the stable pH, temperatidre, and conductivity, measurements <br /> 4 Z <br /> i + t <br /> i' <br /> Thv <br /> An affiliate of The Environmental Resources Management Group with offices worldwide Wii <br />