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ENVIRONMENTAL HEALTH r)EPARTMENT <br /> SAN JOAQUIN COUNTY <br /> Donna K. Heran R.E.H.S. Unit Supervisors <br /> 304 East Weber Avenue,Third Floor Carl Bor man,R.E.H-S. <br /> w. Director Borg <br /> man, <br /> A. Cotulla, R.E.H.S. Stockton,California 95202-2708 Mike Huggins, R.E.H.S., R.D.I. <br /> •'$ <br /> Program Manager Douglas W.Wilson, R.E.H.S. <br /> CQLl�O ;P $ Telephone: (20 )468-3420 Margaret Lagorio,R.E.H.S. <br /> Fax: (209) 4 64-0138 Robert McClellon, R.E.H.S. <br /> Website:www.s gov.org/ehd/ Jeff Carruesco, R.E.H.S. 6< <br /> 41`I V <br /> HELEN HIGGINS MAY 10 2006 <br /> 5815 MORGAN PLACE #16 <br /> STOCKTON CA 95219 <br /> RE: Vogue Cleaners SITE CODE:.231032 <br /> 2315 N. California St. .. . RO#: 607 <br /> Stockton, CA. 95204 SWRCB-CUF#:. 011775 <br /> On April 13,. 2006. San Joaquin. County. Environmental. Health Department <br /> (SJCEHD) met with you. and your consultant, Foothill Engineering, to. discuss the <br /> above referenced. site. <br /> SJCEHD was concerned. with. migration. of co taminants from the release. from <br /> the two underground. storage tanks (UST) formerly located onsite. . A recent <br /> investigation revealed. that the chemicals associated with the former USTs. <br /> appear to have. migrated northeastward and astward across California Street <br /> and southeastward towards Pine. Street. Based on the ground water data that <br /> has been. collected from the monitoring wells associated with this. site, SJCEHD. <br /> has concluded that the ground water plume has not been delineated. in these <br /> directions and. cannot approve. your request for No Further Action. <br /> After discussing site conditions and investigat ve options, it was agreed that an <br /> additional.ground.water investigation would be conducted. <br /> Currently, two subsurface zones are. under investigation at this site. The shallow <br /> zone is represented by "S" zone. monitoring wells and the deeper zone. is. <br /> represented by "D" zone monitoring wells. This next phase. of investigation. <br /> would investigate the next deeper water bearin 3, or"third zone". <br /> �i This next phase of investigation will utilize a phased, two-step approach.. During <br /> } the first phase,. three. (3) CPT borings will be advanced to collect soil and ground <br /> water data to. the third zone. After the CFIT data has been collected and <br /> analyzed,. please have the report of findings s bmitted to SJCEHD. in the format <br /> of an updated site conceptual model (SCM). SJCEHD will evaluate the SCM <br /> and comment/modify the requirements of the second phase. Installation of the <br /> monitoring wells. in areas and depths where contaminants have been detected <br /> will.then be. implemented to provide repeatable ground water sampling events. If <br /> the data indicates chemicals released by the U Ts have impacted the third zone,. <br /> an investigation to the fourth zone may be required to verify the vertical extent of <br /> the contaminant migration. <br />