Laserfiche WebLink
Excavation Remediation Report Advanced Environmental Concepts, Inc. <br /> TABLE -2 <br /> Analytical Results -Groundwater Samples <br /> 01/09197 <br /> (ppb) <br /> CONSTITUENT TPH-D TPH-G BENZENE TOLUENE ETHYLBENZENE XYLENES <br /> .0;0' 00 <br /> SAMPLE I.D. XX <br /> & <br /> B-4W ND NA ND 3 3.5 16 <br /> B-7W ND ND 2 1 0.6 2.5 <br /> B-8W ND ND ND ND ND ND <br /> B-9W NA 21,100 590 34 330 480 <br /> B-1 OW NA 28,900 1,030 30 720 720 <br /> B-1 1 W NA 9,120 15 4 4 20 <br /> DETECTION LIMIT JF7To 7o : 1 50 1 0.5 0.5 0.5 1.5 <br /> The January 1997 laboratory results confirmed the presence of soil and groundwater contamination beneath <br /> the site but were not judged adequate to delineate the horizontal extent of the soil or groundwater plume. <br /> In order to further evaluate the lateral migration of gasoline in the soil and shallow groundwater, AEC <br /> performed additional assessment borings at the site on March 11, 1997. The lateral extent of the gasoline <br /> plume was defined to the north, east, and south by hand augering 10 additional borings identified-aa-81.21:1—, <br /> through B21 (Figure 4 illustrates these additional boring locations). Laboratory analyses of soil and <br /> groundwater samples collected during this second exploratory assessment phase are presented in Tables <br /> 3 and 4. As in the previous tables, soil and groundwater analytical results are presented separately because <br /> of the different measurement units. <br /> TABLE -3 <br /> Analytical Results-Soil Samples <br /> 03/11197 <br /> (ppm) <br /> CONSTITUENT TPH-D TPH-G BENZENE TOLUENE ETHYLBENZENE I XYLENES <br /> SAMPLE I.D. OWN, <br /> km B-12H-10' NA ND ND ND ND ND <br /> B-1 3H-1 0' NA ND ND ND ND ND <br /> B-141-1-10' NA ND ND ND ND ND <br /> 1-d <br /> B-1 51-1-10' NA ND ND ND ND ND <br /> B-1 71-1-10' NA 350 5 Cl 6 .7 <br /> 6d j!�3 a <br /> %-- <br /> Project: AEC 96C-1707 4 <br /> •ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND <br /> 4400 ASHE ROAD.#206 9 BAKERSFIELD.CA 93313 8051831-1546 - FAX 805/831-1771 <br />