Laserfiche WebLink
r <br /> d r <br /> w <br />` " �� "�hba Awa "` '�I?iM •xr a-:y—*` a ,r .a �. •-.n,e,..� �' .—e <br /> f <br /> KLEINFELDER <br /> petroleum hydrocarbon contamination. One to two samples from each boring were <br /> submitted for analysis. Selection of the samples analyzed was based on field observations, <br /> depth in the boring, and PID field screening results. Fifteen of the 44 samples collected <br /> were analyzed for total petroleum hydrocarbons (TPH)purgeable (5030) by EPA Method <br /> 5020;TPH extractable (3550)by GC-PID; and benzene,toluene,ethylbenzene,and xylene <br /> (BTEX)by EPA Method 8020. <br /> The chain-of-custody form and laboratory data sheets are included in Appendix B. Total <br /> petroleum hydrocarbons were detected in 10 of the 15 samples analyzed. Total petroleum <br /> hydrocarbon concentrations above 100 mg/kg were detected in threeof the samples (B-1 <br /> 20.5 feet, B-125.5 feet, and B-2 21 feet). Benzsne was detected at concentrations ranging <br /> from 6.5 to 1,200 ug/kg in 10 samples. The analytical results are summarized on Table 2. <br /> J <br /> 188-89-960 5 <br />