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✓ .+ KLEINFELDER ,. kitchen should be considered to have a water use of 10 gallons/seat per person per day. For the purpose of our nitrate loading calculation, we have estimated the average waste/sewage flow per week for the project site as follows: (249 person seating capacity x 10 gal/person x 2 days) + (50 people/week x 10 gal/person) + (300 gal/day for = 7,580 gal/week existing home x 7 days) 3. PRESENT AND PAST USE The majority of the project site is currently barren. A residence is located near the northwest corner of the site. The only other structures known to have existed on the parcel are the three sheds. Based on a historical aerial photograph review and a review of USGS maps, it appears that the site has been used for agricultural purposes for many years. We saw no evidence that the site has been used as a dairy. We know of no other past uses of the site at this time. 4. SEPTIC PERMITS AND PERFORMANCE SJCEHD files were searched to identify septic permits at parcels in the project vicinity. There were two permits on file for the subject parcel. Eight permits were reviewed for parcels located adjacent to or near the subject property. These permits were for new installations and repairs/additions to existing septic systems. The permitted sewage disposal systems were for conventional septic/leach field systems, most with seepage pits. A summary of the permit information is presented on Plate 3, and copies of the permits are attached. 5. FIELD INVESTIGATION In order to evaluate the subsurface conditions at the project site, on July 21, 2005, one -^ soil profile boring was drilled within the proposed lead field area to a depth of about 25 feet below existing site grade. The boring was drilled using a Simco 2400 truck- mounted drill rig equipped with 6-inch O.D. solid-stem auger. The approximate boring location is presented on Plate 2. A representative with our firm maintained a log of the boring and visually classified the soils encountered according to the Unified Soil Classification System (see Plate 4). A key to the Log of Boring is presented on Plate 5 y and the Log of Boring is presented on Plates 6. Following completion of the soil profile boring, percolation test holes P-1, P-2, and P-3 were installed within the proposed leach field area at depths of about 4'/2, 10, and 15 feet below site grade, respectively. The approximate percolation test hole locations are presented on Plate 2. Following drilling, the sides of the test holes were scored, 59149.G01/ST05R1062 December 15,2005 Copyright 2005 Kleinfelder, Inc. Page 2 of 7 v