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�-- -'o 59i f asl 11ih ',n(cl Trac i CI behruan Y 1994 FINDINGS The results of the ground«ater samples are presented in Table 1 and the complete laboratorN ana15 sus report, field notes and chain of custodN are included as Attachment A TPHg was found at:Netts MW-2. and MW-3 N�ith concentrations of 20,000 and 14,000 parts per billion (ppb) respecu%ely In addition BTEX constituents ranging from 54 to 2,600 ppb NNerc also detected TPHg and BTEX were not detected at MW-1 No petroleum W,drocarbon sheen or floating product were noted m anv of the monitor wells, but a moderate h,,drocarbon odor N%as detected at MW-2 and MW-3 The results of the depth to groundwater measurements and surface ele%ation data are presented in Table 2, and the current groundwater flow direction and surface elevations are illustrated in Figure 3 CONCLUSIONS Main conclusions are as follows 1 Shallow groundwater level is currently at a depth of approximately 7 5 to S-feet below grade The average depth to groundwater at the site has dropped approximately three-tenths of a foot Groundwater flow direction is inferred to be to the northeast with a gradient of approximately 0 0029 verucal per horizontal feet This flow direction and gradient data is consistent with the previous data from October 6, 1993 2 Laboratory analysis data show that monitor well MW-2,and MW-3 contain TPHg and BTEX !� 4 constituents Maximum TPHg concentrations were found at well MW-2 located near the northeast corner of the site Maximum benzene,toluene and total xylenes concentrations, however were found at well MW-3 Monitor well MW-I did not contain detectable le%els of TPHg or BTEX Overall TPHg and BTEX levels at MW-2, and MW-3 showed a significant increase since the previous sampling event(October 1993) DISCUSSION The next quarterly groundwater sampling event will take place at the beginning of April 1994 1tRM will contact the client 72-hours prior to conducting the field work I ' 3