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PUBLICT F11ALTH SERVTCES <br /> QUN <br /> t S_UNI JOAQLtN COULN7Y r <br /> iTV�M0NfioyfLNIMU H7.kL "ri DIVISIONC <br /> Karen Furs'., YLD., i UJ1, Health Office_ r <br /> 304 East Weber Avenue, Third Hoor • Stockton, CA 95202 <br /> 209/468-3a20 <br /> SEP 25 <br /> To Whom it May Concern <br /> ANALYSIS REQUIRED FCR OXYGENATE CCMPCUNDS <br /> San Joaquin County Public Health Services, Environmental Health Cm.stan (PHS/E=0) is under <br /> Local Oversight Program (LOP) ccntrac with the Califemia State 'Nater Resources Control <br /> Board (SWRCS) to provide oversight for the investigation and deanup or unautharized raleases <br /> Tam underground stcrage tanks. i his ocnirc, includes a provision far technical supper by the <br /> California Central Valley Regional Water Quality Control acrd (CVRWQCS). <br /> PHS/EHC has recently rived a letter from the CVRWQC3 that ercvides guidance an how to <br /> analyze for the oxygenated compounds in gasoline until a 'derinmve pratcccio can be <br /> established. Based an this (etter. PHSicHD is directing you to analyze samples from all of <br /> your monitoring wells fcr Tertiary Butyl Alcohol (TAA), Met hyt i erdary Butyl Ether (MTvE) , Ci- <br /> isocropyl ether (CIPE), Ethyl Tertiary Sutyi Ether (E EE) and i erdary Amyt Methyt Ether <br /> 71 AME) by EPA methcd 8260. PHSiEriD vuiii require analysis of samples lar Methanol and <br /> Ethanal where there is reason to believe that these compounds we1e stared in the underground <br /> tank(s ) , <br /> PHS/EHD requires quarze sampling of all weils where the presence of oxygenates is <br /> confirmed by EPA method 8280. Medmcatian of this recuired sampling such as number of wells <br /> sampled, sampling Tecuencf and method of analysis may be granted only atter initial sample <br /> results are reviewed by 3HS/E:-i0. Any modincatlan of the required sampling must have <br /> PHS/EHD approval Phorto implementation. <br /> For additional inromaticn please call your LOP contact <br /> Donna Heran, RE-iS, Cirzcor <br /> Environmental Health Civilian <br /> Margaret Lagaric, RENS <br /> LOP Supervisor <br /> end. <br /> A oivisian ar San Iaaauus uuncv `!eaith Cue :e^�� <br />