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3 <br /> PUBLIC HEA LTH SERVICES <br /> } <br /> Pa �N <br /> SAN JOAQUIN COUNTY '° "V <br /> ENVIRONMENTAL HEALTH DIVISION <br /> ea <br /> .,. <br /> . <br /> .,. <br /> , <br /> Karen FurstMDMPHHealth" Officer <br /> F er .- <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420 <br /> } <br /> JAMES GIOTTONINI <br /> FIL <br /> PUBLIC WORKS DIRECTOR <br /> CITY OF STOCKTON <br /> 425 '!N EL DORADO ST APR 2 0 1a�? <br /> STOCKTON CA 95202 <br /> RE: 110 W SONORA ST SITE CODE: 1253 <br /> FIRE STATION#2 <br /> STOCKTON CA <br /> San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/;EHD) has reviewed Fourth,-Quarter 1998 Status Report dated February 1, 1999" <br /> prepared by ATC Associates, Inc.'Analy-tical result of the water sample from Monitor <br /> Well #4 (MW-4) was 250 parts per billion (ppb) of Methyl tert-Butyl Ether (MTBE), <br /> Analytical result from the previous quarter (September 22, 1998) of the water sample <br /> from MW1 was 46 ppb of MTBE. The Fourth-Quarter 1998 anal is <br /> yt al result of water <br /> from MW-1 was Iess than 62 ppb MTBE. The analytical results were obtained using <br /> EPA Method 8020/8015. Oxygenate confirmation testing using EPA Method 8260 <br /> was not conducted. Testing for oxygenates using EPA Method 8260 should be <br /> conducted starting with the next quarterly monitoring event. A survey that-identifies <br /> all wells and other sensitive receptors within a 2000-foot radius of the site should be <br /> conducted and the results submitted in the next quarterly report. <br /> If you have any questions, please feel free to contact Jeffrey Wong at 468-0335. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Jeffrey Wong , REHS <br /> Margaret ag o, REH <br /> LOP/Site Mitigation Unit N Supervisor. <br /> 3 . <br /> Tc: , John Fukumoto - COS Public Works <br /> C: Jeanne Homsey, P.E. - ATC Associates Inc. (ATC) <br /> A Division of San Joaquin County Health Care Services <br />