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FFiittalcled er Disposal System Parameters and Appurtenances specifications are found in Appendix B. Zabel/Polylock®Al 800 Filter must be he septic tank outlet. Filter specifications are found in Appendix C. Four inch Speed Levelers® should be used in the D-Box to ensure equal distribution of effluent to both 60 ft long Infiltrator Chambers. Infiltrator Chambers® Quick 4 Plus Standard Infiltrator Chamber. Scarify soil and place two inches of clean sand before installing chambers. See Appendix D for specifications. Geotech Filter Fabric must be installed over the Infiltrator Chamber and over the footprint of the seepage pits after drain rock installation. III. CONCLUSIONS The EHD typically require an equivalent minimum of 300 lineal feet of leachline(LFLL) for septic systems that possess sufficient disposal area to accommodate this minimum. Where sufficient disposal area does not exist,the EHD requires a civil engineer to design a system for adequate effluent disposal for a respective project with a disposal area less than sufficient to install 300 LFLL. The EHD does allow design variances based upon a civil engineer's design parameters. Two variances apply to this project: the first pertains to the requirement of a 10-ft disposal area setback from a driveway. As noted on the plans, due to area restraints caused by the proposed on-site retention basin,the Infiltrator Chambers must encroach to six ft from the entrance driveway as illustrated on the Plans. Also illustrated on the Plans, are the use of railroad ties (or equivalent) around the effluent disposal area to prevent it from being driven upon in accordance with Section 8.4.4. of the San Joaquin County Onsite Wastewater Disposal Standards. The second design deviation is in regard to Section 8.8.6 of the San Joaquin County Onsite Wastewater Disposal Standards which states that at least 60%of septic systems must be in leach lines, except in hardpan/clay soils. These soil types exist under the subject facility based upon the findings of NOA. As referenced in the Introduction, a mobile home may be moved on-site near the southeast side the referenced Horse Stables in the future. The mobile home must have its own septic tank. Effluent from this tank can gravity flow in a 4 inch ABS line and tie into the septic tank serving the Horse Stables restroom. The Infiltrator Chambers and seepage pits will then manage both the restroom and mobile home's wastewater flows until the replacement/reserve area must be activated. As-Builts of the entire septic system must be submitted to the EHD by the septic system installer/contractor after installation. Pa e -5- Chesney Consulting