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FIDE i a <br /> ENVIRONMENTAL HEALTH DEPARTMENT <br /> SAN JOAQUIN COUNTY ' <br /> •G E Unit Srr ervisnrs <br /> I P <br /> Donna K.Heran,R.E.H.S. <br /> 304 East Weber Avenue, Third Floor Carl Borgman,R.> .x.s. <br /> Director <br /> � a Mike Huggins,R.E.H.S.,R.D.I. , <br /> Al Olsen,R.E.H.S. Stockton, California 95202-2708 <br /> 3 Douglas W.Wilson,R.E.H.S. <br /> • e4. o .a�P Program Manager Telephone: (209) 46 8 X3420 Margaret Lagorio,R.E.H.S. <br /> Laurie A.Cotulla,R.E.H.S.,.. <br /> Program Manager Fax: (209) 464-0138 Robert McClellon,R.E.H.S. <br /> Mark Barcellos,R.E.H.S. <br /> MAR 2 12003 <br /> MARTIN HARRIS <br /> 5151 ALMONDWOOD DRIVE <br /> i MANTECA CA 95337 �' s <br /> it 1 <br /> RE: Tuff Boy Trailers SITE CODE: 1424 <br /> 5151 Almondwood Drive <br /> Manteca ca 95337 <br /> In correspondence dated August 1, 2002 you were directed �iby San Joaquin County <br /> Environmental Health Department (SJCIEHD) to submit a work plan to complete the <br /> investigation at the above referenced contaminated underground storage tank site. The <br /> deadline for submission of the work plan was Septemler 27,E 2002. This office has <br /> received no work plan; instead, a letter was received from your consultant, Ground Zero <br /> Analysis, Inc. that states that they consider further investigation to be unwarranted and <br /> requesting that the site be closed with a 'No Further Action' required designation. <br /> As stated in the August 1, 2002 correspondence, SJCIEHD has reviewed this site with J. <br /> the Regional Water Quality Control Board, Central Valley Region (CVRWQCB), and both <br /> agencies are in agreement that the investigation at this site is not complete. <br /> Vertical assessment of the groundwater contamination has not been completed. <br /> SJCIEHD does not agree that the `soil distribution coefficient' of a substance, defined by <br /> Ground Zero as the concentration of the substance in.soil divided by the concentration in <br /> water, can be used to demonstrate the extent of impacted groundwater. While this <br /> concept provides a working hypothesis, the model must be validated by real data <br /> obtained in the field. I 4 <br /> Lateral assessment of the groundwater contamination has riot been completed. Ground <br /> Zero states that low levels of contamination exist in the source area; however, there are <br /> no monitoring wells in the source area, or up gradient,to the source area. The <br /> groundwater sample collected closest to the source area is the grab sample collected <br /> from boring SB-1, which was reported to contain 8,000 micrograms per liter (µg11) total <br /> petroleum hydrocarbons as gasoline (TPHg), which is'Inot a low level. l <br /> Again, the map of domestic wells located within 2,000 feet of the contaminated site ) <br /> provided by Ground Zero shows many residences, but the receptor survey table lists <br /> only six of these. Please provide SJCIEHD with specific information on where all of the <br /> depicted residences get their water. If agency permits or well logs are not available for <br /> these residences, please contact the residents in person and ask them where they get <br /> water for their domestic use, and, if they have a well, what construction details of the <br /> well they may be able to provide. Though requested l y SJCIEHD, a map showing the <br /> location of the onsite domestic/production well still has not been provided. The source of <br /> a <br />