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Environmental <br /> Resources <br /> Management <br /> 1777 Botelho Dnve f T <br /> suite 260 ; r <br /> Walnut Creek;CA94994 <br /> 4 March 1998 (510)946-0455 <br /> (510)946-9968 (Fax) <br /> Mr Harlin Knoll, Senior REHS <br /> Public Health Services <br /> San Joaquin County <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor �� <br /> Stockton, California 95202 ERM <br /> Subject Additional Underground Storage Tank Removal <br /> Activities at Heinz Facility, Tracy, CA <br /> Dear Mr Knoll <br /> On behalf of the H J Heinz Corporation (Heinz), ERM is pleased to <br /> submit this workplan for additional work related to the recent removal <br /> of underground storage tanks at the Heinz Production Facility in Tracy, <br /> . California Work will be performed by ERM-Enviroclean, Inc and will <br /> generally consist of additional overexcavation of the tank pits, additional <br /> dewatering of the tank pits, and collection of new sidewall and bottom <br /> soil samples and groundwater samples <br /> After removing the two USTs at the site, ERM collected sidewall soil <br /> samples and groundwater samples from each excavation This work was <br /> conducted under the direction of San Joaquin County Public Health <br /> Services, Environmental Health Division (County) After reviewing the <br /> analytical data on the soil and groundwater samples from the UST <br /> excavations with the County and with Heinz, Heinz agreed to conduct <br /> additional remedial and investigative measures to gain acceptance for <br /> closure of these two USTs <br /> ERM will sawcut and remove concrete adjacent to the existing excavation <br /> for UST#1 Approximately 3,000 gallons of groundwater will be pumped <br /> from the excavation ERM will overexcavate an additional three feet <br /> laterally on the north, east and west sides of the excavation In addition, <br /> a small pit near the center of the excavation will be dug to a total depth <br /> of ten feet below ground surface to permit collection of a bottom soil <br /> sample <br /> ERM will collect three new sidewall soil samples, one bottom soil <br /> sample, and one new groundwater sample from the excavation for <br />