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ENVIRONMENTAL HEALTH DEPARTMENT <br /> SAN JOAQUIN COUNTY <br /> , =+�� .oG Unit Supervisors <br /> Z. '�`' ? Donna K.Heran,R.E.H.S. <br /> r <br /> 304 East Weber Avenue, Third Floor <br /> N: Diector Carl Borgman,R.E.H.S. <br /> Y; Mike Huggins,R.E.H.S.,R.D.I. <br /> Al Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> • c .• 3 <br /> Program Manager <br /> Fo_R�, Laurie A.Cotulla,R.E.H.S. Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> Fax: (209) 464-0138 Robert McClellon,R.E.H.S. <br /> Program Manager Mark Barcellos,R.E.H.S. <br /> B M SAMSOM <br /> SUTTER OFFICE CENTER <br /> 2001 UNION STREET #300 <br /> SAN FRANCISCO CA 94123 <br /> RE: 242 Sutter Street SITE CODE: 9327 <br /> Stockton CA 95202 <br /> APN 139-250-05 <br /> San Joaquin County Environmental Health Department has reviewed "Quarterly Report <br /> Third Quarter 2004"dated October 21, 2004, prepared on your behalf by Advanced <br /> GeoEnvironmental, Inc. (AGE) and has the following comments. <br /> The report documents a routine quarterly groundwater monitoring and sampling event <br /> that took place on July 23, 2004. The depth to water was measured in the three on-site <br /> monitoring wells and a groundwater sample for analysis was collected from well MW-1. <br /> The sample was reported to contain 27,000 micrograms per liter (µg/1) total petroleum <br /> hydrocarbons as gasoline and 160 pg/I benzene. <br /> The report recommends additional assessment of the lateral and vertical extent of the <br /> contamination, in both soil and groundwater, near the vicinity of the former dispenser <br /> island area, and to the east of that area. SJC/EHD agrees with this recommendation. <br /> Please proceed with submittal of a work plan to continue the investigation of the lateral <br /> and vertical extent of the contamination at your site. The work plan is due for submittal <br /> no later than January 28, 2005. <br /> If you have any questions or comments please call Lori Duncan at (209) 468-0337. <br /> Donna Heran, REHS, Director <br /> Environmental Health Department , <br /> i <br /> f <br /> Lori Duncan, Senior REHS Nuel C. Henderson, Jr., RG <br /> LOP/Site Mitigation Unit IV LOP/Site Mitigation Unit IV <br /> cc: James Barton, CVRWQCB <br /> Bill Little, AGE <br />