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GROUNDWATER INVESTIGATION REPORT <br /> 2201 WEST WASHINGTON <br /> WHARF 9, PORT OF STOCKTON, CALIFORNIA <br /> FIELD WORK PERFORMED <br /> INTRODUCTION <br /> In the original Hunter & Associates (WJH) report, it was <br /> stated that there was no evidence of groundwater <br /> contamination; however, discussions with the San Joaquin <br /> County, Environmental Health Division (EHD) personnel <br /> indicated that they had concern that this had not been <br /> proved and that they wanted further investigations made. <br /> Proposals for shallow borings and testing around the tank- <br /> pull area were made by WJH, feeling that the groundwater <br /> had not been impacted and that the contamination found had <br /> been the result of casual spills along the railroad tracks. <br /> The contractor, Thorpe Oil, Inc. (JTO) and Port Authorities <br /> felt that the area could be checked thoroughly by a second <br /> excavation and sampling without doing borings, and that this <br /> could be done at less cost. Several telephone conversations <br /> and (to this writer's knowledge) one meeting was held with <br /> EHD personnel in March, 1991, regarding an alternate plan. <br /> WJH was not involved in these discussions. After tentative <br /> approval had been given verbally by EHD to JTO and the Port <br /> of Stockton, WJH was contacted regarding the re-excavation <br /> and plans were made for sampling and testing. <br /> Attachment # 2: RE-EXCAVATION AND SOIL REMEDIATION PLAN, <br /> dated March 22, 1991, was submitted to EHD and was approved <br /> for implementation. <br /> The following report details work done on the re-excavation, <br /> as proposed in Attachment # 2, soil and groundwater sample <br /> collecting, tests performed, results of tests and conclus- <br /> ions. <br /> Eleanor Ratliff, EHD and James Maughn, RWQCB were on site at <br /> about 12:00 noon and observed the pit and portions of the <br /> sample collecting. <br /> FIELD WORK <br /> A cooler chest, blue ice and lab certified sterile, glass <br /> vials, 3" brass tubes, Teflon end-cover cloth for the <br /> tubes, plastic caps and chain-of-custody forms were picked <br /> ' up by WJH from FOL Laboratories, Stockton, CA. JTO, WJH and <br /> Port_personne_l-_(AldoFreggario)_were_ on site,- May 8,8_1991, <br /> 2 <br />