Laserfiche WebLink
PUBLtc HEALTH SER-ICES <br /> SAN JOAQUIN COCNTY UC4 <br /> JOG[ KHANNA M.D.M.M.Health OfficerP.O. Box 2009 • (1601 East Hazelton Avenue) a Stockton, California 95201 <br /> (209) 468-3400 <br /> P Y <br /> BUD GOOD <br /> SOUTHLAND CORPORATION <br /> 5820 STONERIDGE MALL ROAD <br /> SUITE 310 <br /> PLEASANTON CA 94588 J� 1 ' 199 <br /> Re: 7-Eleven Store #2243-20304 SITE CODE: 1409 <br /> 455 West Grant Line Road <br /> Tracy CA 94588 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) <br /> has completed review of the "Results of First Quarter Monitoring 1992" dated May 18, <br /> 1992 and prepared by Harding Lawson Associates. Please also be informed that the <br /> public comment period on the "Soil and Groundwater Remediation Plan" dated January <br /> 30, 1992 ended on June 5, 1992. No comments were received from the public. A copy <br /> of the Proof of Publication is enclosed for your information. PHS/EHD has the following <br /> comments for your consideration. <br /> Detectible contamination has been identified in monitoring wells MW1, MW5, MWS, <br /> MW9, and MW10. Contamination had not been previously detected in MW5. There is <br /> evidence to suggest that if remediation is not immediately initiated, the plume of <br /> contamination may move off site; as MW5 is the most easterly down gradient on site <br /> monitoring well. <br /> PHS/EHD agrees that vapor extraction is an effective method of remediation, both for <br /> soil and groundwater contamination. The Remediation Plan proposed the installation of <br /> a capture trench along the front of the store. Once the vapor extraction system is in <br /> operation, it may be necessary to install additional wells for vapor extraction. <br /> Groundwater extraction is proposed, if necessary, to capture and contain the <br /> contamination plume. <br /> Please continue efforts to obtain the necessary permits, from the San Joaquin Valley <br /> Regional Air Quality Control District and the City of tracy, for the installation and <br /> operation of the proposed vapor extraction system. <br /> A Division of San Joaquin County Health Craze Servicer <br />