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�•- -- -' ,. —4s�s - - :r- _r-��i aarc s- _-._,.nrar �, - �-. �- �s s'r� .s �'� y}a^`�'_ .� <br /> � �y�^•� � �� '�. `� � ..d*R�i.- 'F� �'-a .N" :4. � Yi{' 1-�yd':l.Wv�Y�k43ii4Y �.�I -• �+'a:f'P �G��:_5..+.9�.wrusl•. <br /> yk <br /> J <br /> ?t G <br /> t <br /> S«? <br /> g r� <br /> Y <br /> k <br /> Mr. Kyle Christie <br /> Autnist 19, 1991 1 <br /> Pa_^e 12 <br /> Discussion <br /> Since the previous quarterly groundwater mon:;oring (January 199'.1. the genet.d groundwater <br />` <br /> flow direction has shifted from sautlrsoutltwest to ;mull while the hydraulic gradient has <br /> remained constant at 0.002. Groundwater occurs from 59.11 to 61.82 feet below ground surface. <br /> Water-level elevations increased from 0.58 to 1.32 feet (an avera,e of 0.75 fe_t) in the <br /> monitoring wells measured. <br /> Monitoring wells W-lA, W-2, W-213, W-3, W-5, W-9, and W-11 showed an increase in <br /> concentration of one or more of the BETY constituents. Monitoring wells W-9 and W-2 also <br /> showed an increase in TP11 concentration. <br /> ase contact me ar Mr. Matt Turner at (916) 444-0123. <br /> If you have ,uiy questions, ple <br /> Very truly yours, <br /> BROWN AND CALDWELL <br /> 1 <br /> Jay Lucas, R.G. <br /> Proyect Manager <br /> JL:MTT:mkw <br /> Enclosures <br /> cc: Mr. Gordon Boggs, Califorrua Regional Water Quality Control Board, <br /> Central Valley Region <br /> Ms. Laurie Cotulla, San Joaquin County Local Health District <br /> Mr. Chris Winsor, ARCO Products Company <br /> 3rown and Caldwell <br />