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r <br />Job No. 4780200 page 3 <br />3.0 FIELD INVESTIGATION <br />31 Boring Advancement <br />E2C1 Inc. visited the subject site on April 6, 1993. Also present were Spectrum <br />Exploration of Stockton, to perform drilling services, and Ms Mary Meyes of <br />the SJCPHS, to observe the field operations Boring and soil sampling were <br />performed according to protocol presented in our workplan for this investigation <br />dated December 23, 1992. <br />The soil boring (B-2) was advanced in the vicinity of the former location of a <br />2,000 -gallon, unleaded gasoline UST and a 1,000 -gallon diesel UST. The <br />location of this boring is shown in Figure 2. Soil samples were collected at <br />5 -foot intervals, then brought back to the offices of E2C, Inc. and kept <br />refrigerated under lock and key. During the advancement of the boring, a <br />strong hydrocarbon odor was detected in the soil cuttings The horizon at <br />which the odor was detected originated at approximately 15 feet below ground <br />■ surface (bgs) <br />Groundwater was encountered at approximately 55 bgs After groundwater <br />was encountered, the auger was raised approximately 2-3 feet to allow the <br />groundwater to seep into the boring. A groundwater sample was then <br />collected from the boring down the auger by means of a bailer <br />A second boring (B-3) was drilled on the opposite (eastern) side of the UST <br />excavation The location of soil boring B-3 is shown in Figure 2 Soil samples <br />were collected from this boring and brought back to E2C During the drilling of <br />this boring E2C was directed by Mr. Allen Law (client) to terminate all field <br />activities at the subject site. The depth of boring B-3 at this time was <br />approximately 35 feet <br />E=e Inc Apr1120, 1993 <br />