Laserfiche WebLink
BASF ItU=09EC�OGIC ASSESSMENT <br /> 7910 Lower Satamnento Road,Stockton,California <br /> Delta Project No.40.8&147 <br /> Page 9 <br /> 3.S Ground m as Chemistry <br /> Ground water samples were collected from monitoring wells (MW-1, 14:W-2, and MW-3) on <br /> ` August 15, 1989,and were submitted to a California-certified laboratory for analysis of B'TEX and TPH. <br /> r r- Monitoring well locations are shown in Figure 2 and the chemical results are presented in Table 6. <br /> I S <br /> Certified laboratory reports are presented ire Appendix C. <br /> Chemical results of the ground water samples indicated the presence of benzene at concentrations of 0.6, <br /> 0.3,and 0.3 parts per billion in monitoring wells MW-1,MW-2,and MW-3,respectively. Concentrations <br /> of toluene,xylenes,and total petroleum hydrocarbons were all below the detection limits. <br /> i . <br /> TABIA 6 <br /> Chemical Analysis o:Ground Water Samples <br /> Monitoring nate <br /> e . WeIl Ca Ee<I ted 'CETne olue a Ethylbenzene Ie es j <br /> t <br /> MW 1 8!13189 <0.1 Q.6 x; <2.0 <2.0 <2.0 <br /> :. VW-2 845189 <0.1 0.3 <2.0 <10 <2.0 <br /> MW-3 8115/99 <0.1 03 <2.0 <2.0 <2.0 <br /> 1 <br /> Notes: <br /> -Total petroleum Hydrocarbons <br /> TPH concentrations is parts per million (ppm). <br /> BTEX concentrations in parts per Millon (ppb). <br /> p .0 DkgROJON Q11 RES TS <br /> ' 4.1 Egent of atmleum Hvt�oc dMil Solis <br /> r <br /> Soil boring SB-1 was advanced near the pump island soil sampie location T-3 (Figure 2). The soil sample <br /> collected at a 4foot depth in this location on January 7, 1988,showed a TPH concentration of 1,510.0 <br /> -- _—i -----ppm._.Tlse:cattcentrntions of..TP14 detected in soil samples collected.in soU-borings.SB-i at.depth3.of.11.5._-- --.:_-- <br /> t-a I <br /> and 41.5 fact below grade were below the detection limit of 0.2 ppm <br /> 20 <br /> 1 OVYNA --- <br /> i <br />