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S k <br /> r: <br /> -J KLEINFELDER <br /> EXPECT MORE' <br /> For the purpose of 6rnitrate loading calculation, w have estimated the average <br /> r.. waste/sewage flow r week for the project site as follows: 7 <br /> 365 person seating c adtf x40~ a 1 erson x 2 da s <br /> ` + (50 people/day x 10 gal/person x 5 days),_ „ = 9,800 gallweek <br /> 3. PRESENT AND PAST USE <br /> The project site currently consists of a church building and modular classroom <br /> buildings, a grass-covered area, and an asphalt paved parking area. No other <br /> structures are known to have existed on the parcel. Based on a review of a historical . <br /> aerial photograph taken May 23, 1993, it appears that the modular classroom buildings <br /> did not exist at the site at that time and have been added in recent years. The church <br /> structure did exist at the time the photograph was taken. <br /> Two permit were issued in 1953 for rep—air/adr inion work to the existing septic system <br /> at th�-sit,BothJ ermits list the job site adtlres and location as being a school. We <br /> P g <br /> saw no evidence that the site has been used as a dairy. We know of no other past <br /> uses of the site. <br /> 4. SEPTIC PERMITS AND PERFORMANCE <br /> SJCEHD files were searched to identify septic permits at parc n.th project vicinity. <br /> There were (three permits on file for the subject parcel. Seventee permits were <br /> reviewed for par Is located adjacent to or near the subje t prop�y. These permits <br /> were for new installations and repair ditions to existing se c systems, new wells, <br /> and soil borings The permitted sewag disposal systems were for conventional <br /> septic/leacoPlate <br /> ems. A summary of information obtained from the permits is <br /> presented <br /> 5. FIELD INVESTIGATION <br /> In order to evaluate the subsurface conditions at the project site, on December 18, - <br /> 2006, one soil profile boring°was drilled within the proposed leach field area to a depth <br /> of about 15 feet below existing site grade. The boring was drilled using a Simco 2400 <br /> truck-mounted drill rig equipped with-6-inch O.D. solid-stem auger. The approximate <br /> boring location is presented on Plate A representative with our firm maintained a <br /> log of the boring and visually cl \sifed t e soiIs-encountered according to the Unified <br /> Soil Classification System (s e Plate 4) A/key to th Log of Boring is presented on <br /> Plate 5 and the Log of Boring 's presen d do Plate 6. <br /> 78311.G011ST07R193 March 5,2007 <br /> #r <br /> O 2007 Kleinfelder. Inc. Page 2 of 8 <br />