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N,CjBIL TERMINAL -2- 14 JULY 1987 <br /> The fate of the product, and contaminated water in the <br /> excavation should be explained in the report. If it was <br /> simply covered up with the neva tank and backfill , then state <br /> this in the report. Mr. Kaprealian said he was not at the <br /> site when the new tank was installed and the excavation was <br /> covered. A detailed report on the water quality existing in <br /> the excavation at this later date may not be available. <br /> 3 . The site plan is inadequate. <br /> -Plan should be to scale. <br /> -Identify Location of all underground tanks at the site. <br /> -Place all tanks on the property on the site plan. <br /> -Show location of underground and abcve ground piping at the <br /> site. <br /> -Identify contents of all tanks, <br /> -Report tank capacities. <br /> -A scale drawing of the site would be a very helpful base <br /> map. Proposed locations of monitoring wells are difficult <br /> to determine on the present site plan. <br /> -Location of the San Joaquin River relative to the site <br /> needs to be shown. <br /> -Identify surface and subsurrace drainage systems, natural <br /> and man-made. <br /> -Other details as required by enclosed memo. <br /> 4 . Geological logging of excavations should be included in the <br /> report. Information available in the exposed wall of an <br /> excavation is far superior to that available in borings, and <br /> is vita]_ to site characterization. <br /> 5. Change Mr. Doug Williams to Mr. Doug Wilson, pages 1 and 3 . <br /> COMMENTS CONCERNING WORKPLAN <br /> 6. Proposed scope of work is inadequate. <br /> -Propose methods to define complete extent of soil <br /> contamination at tank "A" , and ground water contamination at <br /> tank "B" . A monitoring well or wells needs to be placed to <br /> determine if ground water has been contaminated near this <br /> tank. <br /> 7 . Explain how monitoring wells will be designed. <br /> Well information for each well: <br /> -Diagram of well constr_uction.. <br /> -Depth of well , and length of screened interval. <br /> -Well construction and development methods. <br /> -Well construction materials. <br /> -Elevation reference point at each monitoring well with an <br /> accuracy of . 01 feet. <br /> -Ground surface elevation at each monitoring well with an <br /> accuracy of 0. 1 feet. <br />