|
U
<br /> (MW-7) to 18,000 ppb (MW-I) Benzene, toluene, ethylbenzene and xylenes were detected
<br /> in samples from MW-1 through MW-7 The analytical results are summarized in Table 3
<br />' The laboratory report and chain-of-custody are included in Appendix D
<br /> TABLE 3
<br />' ANALYTICAL RESULTS OF GROUNDWATER SAMPLES
<br /> Nomellini Construction Co.
<br /> 1045 West Charter Way, Stockton, Calirornia
<br />' (ugIL)
<br /> Sample Sample TPH as TPH as Ethyl-
<br /> Location Date gasoline diesel Benzene Toluene benzene XyIenes
<br /> MW-1 2-21-91 1,700 ND 990 ISD ND 410
<br />' 12--29-94 53,000 18,000 13,000 8,300 1,500 5,800
<br /> MW-2 2-21-91 10,000 ND 13,000 1,100 ND 2,000
<br /> 6-26-91 38,000 ND 13,000 6_500 1,500 4,800
<br />' 12-29-94 13,000 1,800 7,000 87 620 650
<br /> MW-3 2-21-91 1,500 ND 820 ND ND 360
<br />' 6-26-91 4,900 ND 3,500 690 190 440
<br /> 5-15-92 11,000 NA 5,400 720 ND 960
<br /> 12-29-94 5,300 2,000 1,600 470 290 350
<br /> MW-4 5-15-92 15,000 NA 4,600 2,700 60 1,700
<br /> 2-22-93 29,000 NA 6,600 5,900 1,300 2,600
<br /> 12-29-94 9,700 1,300 2,300 930 650 1,300
<br /> MW-5 5-15-92 ND NA ND ND ND ND
<br /> 12-29-94 ND 87 ND O5 ND 16
<br /> MW-6 5-15-92 6,500 NA 570 29 ND 89
<br /> 12-29-94 10,000 1,900 1,200 700 780 1,600
<br /> MW-7 12-29-94 430 76 95 15 16 31
<br /> MW-8 12-29-94 ND ND ND ND ND ND
<br /> N4W-9 12-29-94 ND ND ND ND ND ND
<br /> niSAS an parts per million,ppm
<br /> NIS = not detected 1`A =not analyzed
<br /> 5.0 CONCLUSIONS & RECOMMENDATIONS
<br /> I5.1 Hydrocarbon-Impacted Soil
<br /> Figure 4 illustrates the approximate extent of hydrocarbon impacted soil at the site
<br /> Although the lateral extent of hydroca>Ibon impacted soil at the site is large, petroleum
<br /> Cra--N aI A„do 3erv�Inc 10
<br /> t cs4 w-1aeaoznoas xo,�.iu.,aau1z 94
<br /> I
<br />
|