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STE Project No. 4001-001 <br /> Page 8 <br />' The Sun Tech samples were analyzed by Geokem Mobile Labs, Modesto, <br /> California, a California certified laboratory (DOH Certification <br /> No. 1873 ) , for 601, 602 , EDB, STLC-Pb, and TPH-gasoline (See Table <br />' 12 and Appendix A) . <br /> TABLE 12 <br /> GROUNDWATER SAMPLE ANALYSES <br /> (4-1-93 and 4-9-93 ) <br /> SAMPLE LOCATION/CONCENTRATION <br /> MW-6 MW-7 MW-8 MW-9 MW-10 NW-11 MW-12 MW-13 EW-1 <br /> (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br /> B ND ND 4 .8 5 .8 130 .0 ND ND ND 90 .0 <br /> T ND ND 4 .9 3 .9 1.6 ND ND ND 4 .5 <br /> X ND ND 30. 0 23 . 0 ND ND ND ND 150.0 <br /> E ND ND 14 .0 13 . 0 ND ND ND ND 86 . 0 <br /> TPH-G ND ND 650.0 400.0 ND ND ND ND 2,700.0 <br /> NOTE: All other constituents tested for were negative <br />' 3.0 GROUNDWATER FLOW DIRECTION <br /> Site groundwater elevations and flow direction were <br /> determined based on water level measurements taken from <br /> monitoring wells 6 , 7 , 8, 9 , 10 , 11, 12 , 13 and EW-1 <br /> (Table 13 ) . Monitoring wells 1 , . 2 , 3 , 4 and 5 were dry, <br /> therefore, no measurements were obtainable. <br /> Based on these measurements, the groundwater flow direction <br /> was determined to be in a Southerly direction. A Kriging <br /> program was used to generate a groundwater gradient map, <br /> which has been included as Figure 3 . <br /> TABLE 13 <br /> GROUND WATER ELEVATION MEASUREMENTS <br /> Reference Point Depth To Groundwater <br /> Date Well# Elevations Water Elevation <br />' 4-1-93 MW-6 52.99" 56 . 23 -3 . 24 <br /> 4-9-93 MW--7 53 .90' 57 .72 " -3 . 82 <br /> 4-9-93 MW-8 53 . 68' 57 .46" -3 .78 <br />' 4-1-93 MW-9 53 . 54" 57 . 42' -3 . 88 <br /> 4-1-93 MW-10 53. 21' 56 . 65 " -3 . 44 <br /> 4-1-93 MW-11 52.95' 57. 05 ' -4 . 10 <br /> 4-1-93 MW-12 53 . 35" 57 .86 " -4 .51 <br /> 4-1-93 MW-13 53 . 36" 58 .80 " -5.44 <br /> 4-9-93 EW-1 53 . 21' 56 . 90• -3 .69 <br /> I <br />