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' Working To Restore Nature <br /> Soil samples were collected from each of the three borings and submitted to a state-certified <br /> laboratory for analysis of benzene, toluene, ethylbenzene, xylenes (BTEX), and total <br /> ' petroleum hydrocarbons as gasoline (TPHg). Laboratory analyses determined that petroleum <br /> hydrocarbon constituents were detected in the soil within 4-5 feet of the static water levels at <br /> ' the site. A detailed discussion of the initial subsurface investigation can be found in RESNA's <br /> "Intenm Problem Assessment Report, Soil and Groundwater Contamination" dated June 8, <br /> 1992 Soil analytical data is summarized in Table 1. <br /> RESNA was retained by KOK Realty Corp. to perform quarterly groundwater monitoring and <br /> ' sampling of the three site monitoring wells. Groundwater monitoring data (Table 2) indicate <br /> groundwater flow beneath the site has been somewhat inconsistent, varying from southwestern <br /> ' to northwestern directions Laboratory analyses of groundwater samples collected from each <br /> monitoring well indicated that gasoline hydrocarbon constituents were present above laboratory <br /> method detection limits. Groundwater analytical data is summarized as Table 3. <br /> Pursuant to PHS/EHD correspondence dated June 11, 1992, an unused on-site well was <br /> investigated. A video log (produced by Water Well Technology, Inc. on July 16, 1992) <br /> revealed that the 8-inch diameter well was cased to a depth of approximately 102 feet below <br /> ' grade. The total depth of the well was approximately 155 feet below grade The well was <br /> subsequently destroyed on February 2, 1993 in accordance with State and County guidelines. <br /> RESNA has been retained by KOK Realty Corp to perform a second phase (Phase 2) of the <br /> ' subsurface investigation. This additional work was performed at the request of PHS/EHD. <br /> 1 3.0 METHOD AND PROCEDURES - PHASE 2 <br /> All work described herein was performed in accordance with RESNA's Quality <br /> Assurance/Quality Control Plan and the Site Safety Plan, on file with PHS/EHD. <br /> 3.11 Drilling Activities <br /> ' On July 13 and 14, 1994, RESNA personnel supervised advancement of four soil borings <br /> (MW4, MW5, MW6, and MW7) to depths ranging from 28 to 29 feet below grade at the <br /> ' project site to 1) define the lateral and vertical extent of petroleum hydrocarbon soil <br /> contamination; 2) determine and define soil stratigraphy, and 3) install groundwater <br /> 1500911REPOM\SR 0894 FNL <br /> 1 <br />