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22�� The 100%reserve/replacement area is designated directly adjacent to the east of the primary disposal area. If the primary field should eventually fail, the reserve area can be activated and the two filter beds can eventually alternate back and forth to allow filter bed rest and rehabilitation, as referenced in the scientific literature. VIII. HOLDING TANK: DESIGN AND OPERATIONAL PARAMETERS Camp Gold Star will provide boats that dock at the facility, the ability to pump-out onboard waste holding tanks into the CGS holding tank, to be installed under the three parking stalls in the SWC of the facility. This holding tank is to be a monolithic/traffic-rated Jensen Infrastructure, Inc. 3,000 gallon tank, with Cut Sheet details in Appendix I and Cut Sheet details for the SJE Rhombus Level MonitorTM in Appendix K. The Level Monitor will ensure holding tank contents do not exceed 50% of tank volume and will be pumped-out before this occurs. Section 1.10.2(d) and Section 10 of the EHD Onsite Wastewater Treatment Systems Standards specify the requirements for holding tank systems within the County. A holding tank is specified for this project due to the fact that wastewater holding tanks within marine vessels contain chemicals to liquify human waste and would be unsuitable for processing through the Package Treatment Plant and ultimate disposal through the filter bed. Therefore, effluent from the proposed holding tank can be considered "... no longer protective of groundwater and/or surface waters," as stated in Section 10.1. The following are responses to each individual Section of Section 10: Section 10.2: Since setback requirements cannot be met, a variance is requested and a monitoring system proposed, as discussed in the Summary. Section 10.3: The holding tank will be constructed by Jensen Infrastructure, Inc. The tank is made specifically for high groundwater conditions (as are the other Jensen tanks used for this project), monolithic and traffic-rated. Section 10.4: The 3k gallon tank will have holding design capacity of a minimum of seven days and 100%reserve capacity. The tank is specified at 3k gallons since it must be pumped at 50% capacity, which is the maximum pumper truck capacity. Therefore,the pumper truck can arrive at CGS empty and transport a full load back to a publically operated treatment works (POTW) for disposal. Section 10.5: Both audible and visual alarms will be installed and programmed to signal time-to- pump and reserve storage exceedance. The alarm pedestal will be located adjacent to the holding tank. Section 10.6: See Section 10.3. Section 10.7: The holding tank will be subterranean in the parking stall location, which will be readily accessible to a pumper truck. Section 10.8: The pressurized influent line discharging into the holding tank will be designed by Mid-Cal Construction, Inc. Page -7- Chesney Engineering, Inc.