Laserfiche WebLink
' A Boring, identified as B-T, was placed by JPCA on June 24 , 1994, <br /> approximately in the center of the former UST and extended to the <br /> saturated zone, approximately 35 feet. Soil samples were collected <br /> at each five feet commencing at 11 feet. A grab water sample was <br /> collected. <br />' Figure 2 presents the location of the former UST area and B-T. <br /> The soil and groundwater samples were analyzed for Total Petroleum <br />' Hydrocarbons as Gasoline (TPHG) and Benzene, Toluene, Ethylbenzene <br /> and Xylene (BTEX) using Modified EPA Methods 8015/8020 . The <br /> results of the chemical analysis for TPHG and BTEX in parts per <br /> million (ppm) for the soil and groundwater samples collected from <br /> B-T are shown in Table 1 below. <br /> TABLE 1. <br />' ppm <br />' Sample YD TPHG B T E X <br /> B T-11 8 . 6 0. 63 0. 75 0. 11 0. 48 <br />' B-T-16 14000 89 800 360 1200 <br /> B-T-21 7300 45 390 170 570 <br /> B-T-26 400 10 37 8. 3 28 <br /> B-T-31 8 . 1 1. 32 2 . 27 0.23 0. 78 <br />' B-T-35 ND 0. 009 0. 011 ND 0. 009 <br /> B-T Water 3 . 3 ND 0.29 ND ND <br /> ND= Non Detected <br />' Based on the results of the analysis from the initial boring, San <br /> Joaquin County Environmental Health Division (SJCEHD) required an <br /> additional subsurface investigation to better define the extent of <br /> the soil and possible groundwater contamination. JPCA to address <br /> the county requirement prepared a workplan which was accepted by <br /> SJCEHD. <br /> A permit was requested and received from SJCEHD prior to drilling <br /> the three borings and three monitoring wells. The permit, Number <br /> 004273, is included in Appendix A. A site specific Health and <br />' Safety Plan was completed. US Alert was contacted prior to <br /> drilling. SJCEHD was notified 48 hours prior to drilling. <br /> 3 <br /> i <br />