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Harding Lawson Assoelates <br /> rinsate blank in the field and labeled these samples as MW-4 and <br /> MW--5, respectively. Ms. Lagorio was on site to observe the <br /> sampling activities. Purged groundwater was placed in a 55- <br /> gallon drum and is temporarily being stored on-site until <br /> disposal can be arranged. <br /> am <br /> All groundwater sples were contained in laboratory- <br /> supplied 40-milliliter glass volatile organic analysis (VOA) <br /> vials preserved with hydrochloric acid. The samples were <br /> immediately place in an ice-filled cooler and transported to NET <br /> Pacific under chain-of-custody procedures. Chemical testing and <br /> results of analyses are discussed later. <br /> 4 <br /> Water Level Measurements <br /> s <br /> On August 12, 1991, Quantarolli and Associates, licensed <br /> land surveyors, surveyed the tops of the monitoring well casings. <br /> HLA obtained depth-to-groundwater measurements on July 3 and <br /> August 5 and September 3, 1991, using a steel tape accurate to <br /> the nearest one-hundredth of afoot. The survey information, <br /> depth to groundwater, and groundwater surface elevations in the <br /> wells are presented in Table 3, <br /> Chemical Analyses <br /> The following chemical analyses were performed on <br /> groundwater and selected soil samples collected during our <br /> t <br /> investigation. <br /> t <br /> 7 <br />