SR0038698 - Laserfiche WebLink

Home Browse Search

t Surfacing Moisture at Disposal Beds Page 2 of 2 Stodcton Golf and Country Club April 1,2008 Our initial recommendations are as follows: A water meter should be installed on the effluent pump outflow pipe and monitored daily to determine the actual flow rate of the facility. After several weeks, the average rate of flow could be determined and when combined with attendance figures, a rate of gallons per person could be determined. • As a short term solution, a French drain could be installed along the east side of the beds to intercept surfacing water. The bottom of the drain would be required to have a five foot separation from ground water. Therefore, the total depth of the drain should be approximately seven feet below the ground surface. The existing beds should be dried out. A replacement drain field consisting of three or more beds should be installed in a different area. Effluent to the beds could be controlled with a switching valve. Depending on need, three or six beds could be used simultaneously. This would allow more flexibility during seasonal peak uses. To summarize, septic system designs are commonly based on flow rates, soil adsorption rates and estimated uses. The average daily flow rates were proposed by our office and confirmed by the Stockton Golf and Country Club at the time of design. The use rates and overall use may have increased. Poor maintenance appears to also have played a role, effectively reducing the adsorptions rate of the soil. At present, it is difficult to determine the main rause behind the surfacing effluent. The immediate installation of a water meter on the effluent pump outflow pipe will directly measure the average daily flow of the facility and provide some valuable information concerning this problem. The location of potential expansion areas for the existing system should be initiated. These areas will need to have 50 to 100 feet of separation from the existing beds. After obtaining the flow meter information it would be possible for NOA to provide you with additional recommendations, scope of work and an estimate of engineering and/or consulting services. Our professional services were performed, our findings obtained, and our recommendations proposed in accordance with generally accepted engineering principles and practices. This warranty is in lieu of all other warranties either expressed or implied. Test findings and statements of professional opinion do not constitute a guarantee or warranty, expressed or implied. Please do not hesitate to contact our office with any questions or concerns you may have. I will contact you in a few days to discuss this matter further. Best Regards, S�pNAL GF NEIL a ANDERSON&ASSOCIATES a DAVIT}J.WELCH * NO.2151 CERMED DavidW ch, M.Sc., Principal Geologist ENGWENW, CEG 2151, CHG 653, PGP 1049 OF C,W1 � Cc: Mr. Rodney Estrada, R.E.H.S. San Joaquin County Environmental Health Department 600 E..Main Street, Stockton, CA 95202 (249) 468-3420 rR }cehd.com 902 Industrial Way'Lodi,CA 95240 a 209.367.3701 :Fax 209.369.4228 P24768 Nell D.Anderson&Associates.Inc.