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QUARTERLY GROUNDWATER MONITORING REPORT <br /> ' FORMER DIAMOND LUMBER SITE <br /> JUNE, 1995 <br /> ' 3.4 SUMMARY AND CONCLUSIONS <br /> 3.1 Results of Groundwater Laboratory Analyses <br /> ' TPH G was detected in two of the five wells sampled (BEI-MW 1 and BEI-MW3) TPH G was <br /> reported at a concentration of 2,000 parts per billion (ppb) for BEI-MW I and at a concentration <br /> ' of 57,000 ppb for BEI-MW3 Benzene concentrations were detected at 110 ppb and 6,400 ppb 1n <br /> groundwater samples from BEI-MW 1 and BEI-MW3, respectively Total lead was not detected <br /> in any of the samples The laboratory results are summarized for all sampling events performed <br /> by Park and others in Table 2, contained in Appendix B <br /> 3.2 Groundwater Conditions <br /> ' The depth to groundwater measured on March 14, 1995 was between 18 14-feet to 18 77-feet <br /> bgs The elevation of the groundwater ranged from 14 50-feet and 15 28-feet above mean sea <br /> ' level (MSL) The direction of the groundwater flow was to the north northeast at a gradient of <br /> 0 0005-feet/feet (ft/ft) Depth to groundwater readings collected from the BEI wells were <br /> considered anomalous, due to the shallow depth to the well perforations and the presence of <br /> standing water on the site at the time that measurements were collected Monitoring well BEI- <br /> MW-2 could not be sampled due to storm runoff water collecting over the well box after the <br /> water level measurement was taken <br /> 1 <br /> 1 � <br /> r <br />' 3 <br />