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California Regional Water 2 December 20, 1989 <br /> Quality Control Board <br /> expected that the same conditions, unless a long period of steady <br /> rainfall would occur, will exist through the end of 1989. County <br /> Public Works staff is monitoring the detention basin to determine <br /> when the pumps first begin to operate during this rainy seasons. In <br /> the event that the pumps discharge to South Paddy Creek, surface <br /> water samples will be taken according to the specifications of <br /> Monitoring and Reporting Program Number 87-088. <br /> Ground Water Monitoring; <br /> The water monitoring report for the fourth quarter of 1989 is <br /> enclosed. The sampling was performed by California Water Labs, and <br /> contains results for all required quarterly sampling. Additionally, <br /> the reports contain the required field water level measurements. The <br /> water level depth measurements indicate normal season fluctuations <br /> exist for the area and that neither the ground water direction of <br /> flow nor gradient have changed appreciably. A ground water contour <br /> map is enclosed. The quality assurance data indicates that the <br /> results are still of good quality. <br /> As in the past, the levels of Chloride, Specific Conductance, Total <br /> Dissolved Solids and Total Hardness detected in the groundwater <br /> sample from MW-4 continue to be at somewhat higher levels than in the <br /> other 3 wells sampled. However, the detected levels of these <br /> parameters 'in MW-4 do not exceed drinking water standards imposed <br /> under Title 22 and do not indicate any ground water degradation. <br /> If you have any questions regarding this report, please contact <br /> myself or Tom Horton, Solid Waste Manager at (209) 468-3066. <br /> Sincerely ours, <br /> Rudy Rodriguez <br /> Assistant Civil Engineer <br /> RR:nc <br /> LA11204a <br /> Enclosures <br /> c: Ed Padilla, San Joaquin County <br /> Public Health Services <br />