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-Moe M91 RI k <br /> KLEINFUDER <br /> 3 SOIL REMOVAL <br /> 3.1 EXCAVATION <br /> Soil above the ground water surface will be removed from the walls of the <br /> excavation with a backhoe or similar type excavation equipment. The walls <br /> of the excavation will be expanded in the areas where petroleum <br /> hydrocarbons are indicated in the unsaturated soil. It is anticipated <br /> r that additional soil contamination may be present in the unsaturated soil <br /> beneath the removed pump island. <br /> Potentially contaminated soil removed from the excavation will be <br /> f <br /> stockpiled and covered .onsite. To. evaluate disposal. options, an <br /> r <br /> 7 assessment : :similar to the <br /> first soil pile survey, presented . in <br /> Kleinfelder's Ground Water Assessment Report, <br /> P , will be conducted on the <br /> stockpiled soil. <br /> During the soil removal, a Kleinfelder geologist will be on site to.log <br /> i - - <br /> ' the excavation and screen the soil removed. <br /> x ° <br /> 3.2 QUALITATIVE FIELD SCREENING <br /> A Photovac TIP photoionization detector <br /> N <br /> _ (PID) utilizing a :10.6--eV <br /> -- - - <br /> -- F <br /> photoionization lamp. will be <br /> used to measure total ionizable compounds in t <br /> u parts per million" by volume (ppmv) relative to 100 <br /> isobutylene calibration standard. Part per million <br /> 3 Samples with minimal exposure to the <br /> : atmosphere will be collected from inside the middle .of the backhoe bucket <br /> and immediately sealed in Mason jars. The Nason 'a <br /> g J r will be shaken for <br /> ;. <br /> approximately 15 to 30 seconds and the lid punctured.caith two holes. <br /> The <br /> UP of the PID will be inserted in one hole to measure the organic vapors <br /> in the head space of:the Mason jar. <br /> 97-88-509 <br /> �1 3 <br /> �f <br />