2015/04/22 - SANITARY - SAN - Other

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Page 1 a+b of 5 indicates that restaurants and other food preparation/processing facilities that prepare food as a major part of the operation are expected to produce high wastewater that will exceed the maximum allowable concentrations. For the purpose of this policy these facilities will be considered High-Strength Wastewater Producing Facilities. These facilities can be either new or existing. Unless wastewater documentation can be provided to prove otherwise the Department assumes the following: 1. FOG—200 mg/L 2. BODS— 1200 mg/L 3. TSS —220 mg/L The second category created by the Dept. is what is known as At-Risk Wastewater Producing Facilities. These facilities are public or commercial and have food preparation as part of their operation,but less than that of a full service restaurant, a different approach will be accepted provided that the local government unit (usually the county) in which the POWTS is proposed to be located concurs in writing with the additional oversight. This alternative approach relies less on presumptions of wastewater strength and more on monitoring the performance of the system and taking a proactive approach should persistent ponding be observed. For the purpose of this POWTS Design the At-Risk Wastewater Producing Facility category would be where this commercial use as a campground bar or tavern would fall as food preparation will only be a part of the operation. Based on the information provided by the owners regarding the proposed types of food to be served and the DHS license to be applied for as a "Pre-packaged restaurant", I feel that this facility with the additional county oversight required along with the performance monitoring POWTS management, maintenance and contingency plan proposed while adding in the seasonality of the business will be sufficient in protecting the system from premature failure while properly disposing of the wastewater generated from this proposed commercial establishment. The treatment chain includes a 1000 gallon grease interceptor(general plumbing permit applied for) to collect the wastewater from the kitchen. The bathroom wastewater will exit the building from a separate location and will merge with the kitchen wastewater into a 1565 gallon septic tank with a Poly-Lok PL-525effluent filter. The effluent will gravity flow to total of three dispersal cells consisting of 22 leaching chambers per cell for a total of 66. The cells will be 3 ft. x 90 ft. in length. I believe that the sanitary design proposed will adequately treat and disperse the wastewater generated from this bar and through proper monitoring of the dispersal cells and system maintenance it will satisfy SPS 383.40 for the purpose of safeguarding the public health, protecting the waters of the state and will comply with the design performance standards. Thank you for your consideration of this proposal. Keith E. Stoner Designer#1575-007 Revised 3-23-15 Trans. ID#2521310