Laserfiche WebLink
# <br /> t <br /> „ <br /> � rte„ x � _'�j1r %�,, pa;+ k, ;k�K !;• <br /> E4 m <br /> S T E It \ C Ii cl I. cl (, E c 12 E S 11 l' It C 1: S , I N C <br /> J.Rand.tll/15 Septemhcr 1989 <br /> remain nondetectablc for TPPH at;d BTEX. 1,2-DCB and Frcon-113 were not detected in samples from <br /> M1Y-5,which had previously been reported at 10 ppb of 1,2-DCB and 20 pph of Freon 113 on 22 March <br /> 1989. In addition,5.3 ppb of 1,2-DCB was detected in the groundwater sample from MW-4,uitich were <br /> s not previously detected in that well. <br /> Depth to water measurements taken on 22 March 1989 and 12 June 1989 indicate a rise in the <br /> t polcntiometric surface of between 0.6 and 0.7 inches across the site. The groundwater flow direction <br /> is predominantly co the cast at a gradient of about 1%. <br /> SUMIMAZY <br /> TPPH and BTEX in groundwater samples were detected only from wells MW-1, MW-2 and <br /> ® MW-5 in the southern half of the site. Samples from wells MW-3 and MW-4 did not contain detectable <br /> concentrations of TPPH or BTEX Groundwa:pr collected from well MW-1 contained the highest <br /> concentrations of BTEX with benzene concentrations at 4,400 ppb. In addition,1,2-BCR was detected <br /> ti in samples from well MW-4. <br /> The estimated direction of groundwater flow is to the cast at a gradient of about 1%. <br /> Quarterly monitoring and groundwater sampling will be continued to evaluate changes in fuel <br /> '`- hydrocarbon concentrations and to determine variation in the direction of groundwater flow. <br /> i <br /> i <br />