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Soil Suitability Study APN: 005-141-29 -PA-03-587- Service Request# SR0036504 <br /> Parcel 1, Approximately 2.0 Acres Total <br /> 6.0 Percolation Test Information <br /> 6.6 Percolation Rate Calculation <br /> The percolation rate of 27.77 minutes per inch listed on the Percolation <br /> Test Details Sheet contained in my Soil Suitability Study dated December 23, <br /> 2003 was determined on the basis of a 30-minute observation period, which is <br /> erroneous. The percolation rate calculation needs to be based on a ten-minute <br /> observation period which results in a percolation rate of 9.26 minutes per inch <br /> which is the correct rate. <br /> 3.7 Septic Site Usage and 6.8 Type And Size Of Septic System <br /> Section 8.0 Comment and Recommendations of my Soil Suitability Study <br /> dated December 23, 2004, which states "discharging effluent into a 12,000 sq. ft. <br /> minimum usable disposal area with seepage pits is recommended for this single <br /> parcel" is inappropriate and needs to be revised in its entirety. This is not an <br /> appropriate recommendation for a commercial site. <br /> Septic use and size needs to be based on the planned parking area for <br /> the site. The project site map shows that nine (9) parking spaces are to be <br /> provided and based on the nine (9) parking spaces a 1600 gallon septic tank with <br /> 333 feet of leach line plus a 100% designed disposal replacement area will be <br /> required. Also the septic area should not be driven over, parked on, or used as a <br /> storage area. The leach field shall be for septic purpose only. This may require a <br /> reduction in the number of planned storage units. <br /> The above needs are based on the following calculations: <br /> 9 spaces X 15 gallons = 135 gallons plus 1200 gallons =1335 Total Gallons. <br /> Leach lines are based on 25% - 1335 x.25 = 333' of leach line required. Also a <br /> 1600-gallon septic tank is needed. <br /> Sincerely, <br /> Walter E. Curtis. <br /> Attachments: Sanitation Permit No. 73-587 <br /> Sanitation Permit No. 93-792 <br /> Well Permit No. 73-270 W / 73-303 P <br /> Matriscope Inc.-25655 North State Highway 99, West Frontage Road, 3 <br /> Acamno California 95220 <br />