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Aprd 20; 1995 <br /> Project 113-26-04,Work Plan,I age 5 <br />• Table 3 continued <br /> Date Well # TPH-g Benzene Toluene EthylbenzeneXylenes <br /> 24-Sep-92 MW-3 ND<50 0 7 1 4 ND<O5 9 2 <br /> Feb-93 MW-3 ND<50 ND<05 3 9 ND<05 1 7 <br /> May-93 MW-3 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 <br /> Aug-93 MW-3 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 <br /> Nov-93 MW-3 ND<50 ND<0 5 ND<0 5 ND<0.5 ND<0 5 <br /> 9-Sep-94 MW-3 ND<50 ND<0 5 ND<O 5 ND<0 5 ND<0 5 <br /> 22-Dec-94 MW-3 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 <br /> 1 5-Mar-95 MW-3 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 <br /> 25-Sep-92 MW-4 fp 0 75" <br /> Feb-93 MW-4 45,000 7,100 2,600 440 7,500 <br /> May-93 MW-4 32,000 6,300 1 ,700 380 5,600 <br /> Aug-93 MW-4 28,000 5,400 810 320 3,600 <br /> Nov-93 MW-4 41 ,000 2,200 920 240 6,800 <br /> 9-Sep-94 MW-4 2,500 350 25 25 1-80 <br /> 22-Dec-94 MW-4 3,700 570 92 58 470 <br /> 15-Mar-95 MW-4 22,000 4100 570 400 2600 <br /> Groundwater measurements obtained during quarterly sampling show a seasonal <br /> change in flow direction. During late summer through December the flow direction , <br />. is east-northeast In February and March the flow direction is southeast and east- <br /> southeast Table 4 below provides the data used to generate Figure 4 - Seasonal <br /> Groundwater Gradient Direction <br /> Parker Environmental Services, 190 East 7th Street, Pittsburg, CA 94565-2317 <br /> Phone (415) 439-1024 Fax (415) 439-2566 <br />