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MEMORANDUM Page 3 of 7 00, <br /> Holly Commerce Center Buildings A& B <br /> Tracy, CA �N S I E G F R I E D <br /> Soil Acceptance Rate (Chesney 2019) = 0.43 gal/sqft/day (see Appendix A, page 9) <br /> Minimum Filter Bed Size for Soil Acceptance Rate = 320 gal/day ADF/ 0.43 gal/sqft/day= 744 sqft <br /> Actual square footage within the Infiltrator chambers: <br /> Total SF= 8.0 ft*93.5 ft= 748 sqft> 744 sqft <br /> Building B: <br /> Traditional Leach line Requirements = (CTC+ADF) *Soil Factor <br /> = (1,520 gallons + 320 gallons) *0.25 <br /> =460 ft <br /> SF at soil effluent=460 *4 (Soil Bed Factor) = 1,840 sq. ft. <br /> Due to high ground water elevations and limited space for a large leach field a filter bed will be deployed <br /> using the Daily Soil Application Rate as a basis for design: <br /> Soil Acceptance Rate (Chesney 2019) = 0.43 gal/sqft/day (see Appendix A, page 9) <br /> Minimum Filter Bed Size for Soil Acceptance Rate = 320 gal/day ADF/0.43 gal/sqft/day= 744 sqft <br /> Actual square footage within the Infiltrator chambers: <br /> Total SF= 8.0 ft*93.5 ft= 748 sqft > 744 sqft <br /> V. Design and Operational Specifications for the Filter Beds: <br /> Pump: Zoller 163 1/2hp with 2" FM. <br /> Control Panel Orenco packaged controls. <br /> Discharge Assembly: The 2" discharge pipe from the pump will be connected to a 4" PVC tight line by a <br /> 2X4 reducer—this will reduce the energy by decreasing the velocity in the pipe. This 4" PVC tight line will <br /> be a minimum of 30 linear feet long before discharging into the distribution box. The distribution box is <br /> designed with a 2" drop at the entrance. <br /> The outflow pipe of the distribution box will have a 4" PVC tight line that is approximately 10 feet long. At <br /> the transition to the perforated line, the pipe will drop 2" to the edge of the leach field. At the edge of the <br /> leach field, the 4" PVC tight line will be connected to a flat 4" perforated leach line. <br /> Laterals for Each Filter Bed: 4" PVC perforated with inspection parts. Pipe will be centered on an 8ft bed <br /> and 8.75 ft long. <br /> Stockton San Jose Sacramento Modesto <br /> 3428 Brookside Rd. 111 N. Market St.,#300 109 Scripps Drive 100 Sycamore Ave,#100 <br /> Stockton, CA 95219 San Jose, CA 95113 Sacramento,CA 95825 Modesto,CA 95354 <br /> t: 209.943.2021 t:408.754.2021 t: 916.520.2777 t: 209.762.3580 <br /> F:\17projects\17017 Holly Sugar Industrial\Civil\Septic Sizing-Prelim\17017 Sanitary Sewer Design Criteria Memo Buildings A&B <br /> Rev 1.docx <br />