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PI MCR ENGINEERING,INC. _PLANNING -ENGINEERING-SURVEYING September 10,2009 Thomas Gau Chief Deputy Director of Public Works San Joaquin County 1810 E.Hazelton Ave. Stockton,CA 95205 Subject:Stockton Golf &Country Club -Sewer Service Dear Tom, As you know,the Stockton Golf &Country Club (SGCC)would like to explore the possibility of connecting to the sewer system operated by the Pacific Garden Sanitary Sewer District (PGSSD),and thus eliminate the need for their on-site septic system.Below is our proposal: Sewer Demand:Average daily sewer demand from the Golf Course is approximately 6,037 gpd.Sewer will be pumped into the PGSSD system at a rate of 20 gpm (approximately 8%of the capacity of the existing sewer line).At this rate,the system will need to pump approximately 5 hours per day to meet the daily demand of the golf course. We are proposing to put controls in place that will limit the pumping to off-peak periods. Sewer Quality:Sewerage from the golf course is generated by the clubhouse that includes three dining rooms, conference rooms,fitness center,locker rooms,pro shop and bathrooms,as well as the pool house.The current sewer collection system includes grease interceptors that are regularly maintained. Description of Proposed System:SGCC would abandon their existing leach fields and remove the existing effluent pumps.Two new raw sewerage pumps (Orenco PSE 4011)would be installed in the first of the six existing 2,000 gallon septic tanks.The six tanks would be interconnected so that all 12,000 gallons of storage would be accessible to the system.The new pumps would be connected to the existing 2 inch diameter effluent disposal force main.The force main will be abandoned from the north end of the driving range to the leach fields and a new 3 inch diameter force main will be installed from that point to the point of connection.Outflow will be discharged into a new epoxy- coated manhole placed near the existing manhole in the PGSSD line.A short gravity line (6 inch diameter)will convey the flow from the new manhole into the existing PGSSD manhole.A flow sensor will be installed in the PGSSD system,with radio controls that will communicate with the pump station and disable the pumps during peak flows in the PGSSD line.Please see the attached exhibit depicting the improvements just described above. If you have any questions or concerns about our proposed method of connection,please do not hesitate to call me directly at the phone number below. Sincerely, ~ Tony B.Marshall,P.E. Principal Cc:Bob Young,General Manager,Stockton Golf and Country Club 1242 DUPONT COURT.MANTECA.CALIFORNIA 95336.209.239.6229 FAX 209.239.8839