Laserfiche WebLink
, f <br /> ERM-West. Inc. <br /> Suite 200.2o01 P Street•Sacramento, California 95814-5213 • (916) 444-WEST(444-9378) -Telefax (916) 444-5313 <br /> 24 March 1992 <br /> MAR ? 7 1992 <br /> Mr Harlin Knoll <br /> ENVIR0,I iNI;-�i-,'I HF-Al TH <br /> Environmental Health SpecialistlY�I i f <br /> Public Health Services <br /> San Joaquin County <br /> P O Box 2009 <br /> 1601 E Hazelton Avenue <br /> Stockton, CA 95201 <br /> Subject Quarterly Sampling Results of Groundwater from Monitoring <br /> Wells at the Site Located at 1033 East Scotts Avenue, Stockton <br /> Dear Mr. Knoll <br /> Well SFW-1, SFW-2, and SFW-3 were purged and sampled on February 28, <br /> 1992 Teflon bailers were used to purge the wells prior to sampling The <br /> bailers were decontaminated prior to purging each well by washing with an <br /> Alconox solution and triple rinsing with deionized water Each monitoring <br /> well was developed by bailing until consecutive conductivity, pH, and <br /> temperature measurements varied by less than 10% Table 1 summarizes <br /> the number of well volumes removed from each well prior to sampling, and <br /> the stable pH, temperature, and conductivity measurements <br /> Table 1 <br /> Monitoring Well Development Data <br /> Well # Volumes Bailed pH Temperature Conductivity <br /> SFW-1 5 554 67 0°F 19A'(- 1910µS <br /> SFW-2 5 536 67 8°F 1890µS <br /> SFW-3 5 588 65 6°F 190OPS <br /> Following well purging, water samples were obtained by lowering a <br /> decontaminated Teflon bailer into the well The sample water was <br /> immediately transferred by gently pouring the contents of the bailer into <br /> clean volatile organic analysis (VOA) vials, filling each completely Care <br /> was taken to minimize any agitation of the water sample The sample vial <br /> was then capped with a Teflon septum cap such that zero headspace was <br />. achieved, and no air bubbles were visible when turned upside-down <br /> TIW <br /> An affiliate of The Environmental Resources Management Group with offices worldwide fk_b�© <br />