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PUBLIC H- EALTH <br /> SERVYC E <br /> S <br /> SAN JOAQUIN COUNTY °'��7 <br /> ENVIRONMENTAL HEALTH DIVISION 2 .x <br /> Q. <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer <br /> 304 E. Weber Ave., Third Floor • P. O. Box 388 • Stockton, CA 95201-03 C <br /> 2091468-3420 6 o <br /> k <br /> TODD TERESI MNLED JAN 2 5 1996 <br /> TERESI TRUCKING <br /> 900 112 VICTOR RD b <br /> LODI CA 95241 io <br /> RE: WORK PLAN FOR 900 112 VICTOR ROAD, LODI SITE CODE: 1747 <br /> e ► <br /> In response to our numerous telephone conversations recently regarding the site referenced above <br /> San Joaquin County Public Health Services, Environmental Health Division (PHSIEHD) Site k <br /> Mitigation Unit provides the following comments. E <br /> f <br /> k <br /> To date soil samples collected at this site from the excavation sidewalls, bottom and stockpiles <br /> confirm theen <br /> re <br /> p s ce of petroleum hydrocarbon contamination atili or above the detection limits <br /> applied for Total Petroleum Hydrocarbons pp y bons (TPH) as gasoline and,diesel including some BTEX <br /> components. <br /> Previous work at this site including excavation revealed L presence of an open 12" well <br /> positioned in the center of the two existing excavations. A vernal directive by PHSIEHD to <br /> Todd Teresi to sample this well for total depth, depth to water, down hole video logging and <br /> examination for free product or sheen and subsequent laboratory analysis (TPH as gasoline and <br /> diesel, BTEX and MTBE at currently accepted detection limits to be approved at the time of <br /> sampling and reflected on the chain of custody) prior to destruction or use of this well was <br /> issued during our December 18, 1995 office meeting. PHSIEHD considers this well to be a <br /> probable vertical migration conduit which may contribute"Ito groundwater contamination and <br /> therefore determining its overall condition is currently the;.highest priority issue for this site. <br /> In order to protect ground water quality and potential future ground water use PHSIEHD <br /> provides this directive to sample the well for the above parameters to be completed no later <br /> than February 5, 1995. PHSIEHD must be present for sampling and observations during <br /> all phases of evaluation not limited to those activities listed above for this site and requests <br /> a 48 hour advanced notification for inspections. Soil types, sand, silt and silty sands observed <br /> in the existing excavations may also act to aid in rapid lateral and or vertical contaminant <br /> migration. Further investigation in the form of soil and groundwater sampling is therefore <br /> required in the vicinity of the existing tank excavations.-� <br /> i <br /> Work plans for this site dated January 12, 1996 and an amendment received January 24, 1996 } <br /> have been reviewed. PHSIEHD concurs with the fundamental approach proposed in the <br /> amended work plan. A minimum of three soil borings lis required at this time with the <br /> probability of several more expected to fully delineate the 'soil and ground water plume. Full ° <br /> definition is generally required prior to proposing or engaging in engaging activities. Ground <br /> A Division of San Joaquin County Heaith Car'e Services <br />