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III. NITRATE LOADING STUDY FINDINGS The Nitrate Loading Study findings will be discussed in the following sequential categories: 1.) Projected wastewater flow volumes from the Temple Restrooms and Kitchen,post expansion. 2.) Anticipated wastewater characteristics. 3.) Nitrate loading to the groundwater underlying the mound system disposal area. 4.) Mound System Design Criteria and Parameters. 5.) Conclusions and Recommendations Section. A. WASTEWATER FLOW PROJECTIONS AND CHARACTERISTICS WASTEWATER FLOW VOLUME PROJECTIONS A number of variables are involved in estimating wastewater Average Daily Flow(ADF)volumes from the Sikh Temple expansion. Wastewater flow volume projections for facilities in unsewered areas of San Joaquin County have been historically and typically calculated under one or more of the following guidelines: 1. Data published in the San Joaquin County Sewage Standards. 2. Anticipated total occupant load. 3. Number of bathroom fixtures for a facility, leading to calculated bathroom use per capita. 4. Number of parking spaces. 5. Historical wastewater flow data from the existing or comparable facility. The following list of flow projection determinations describe the rationale for arriving at the average daily effluent flow volumes for the Sikh Temple expansion: 1. The San Joaquin County Sewage Standards ass' 10 per person for a House of Worship with a Kitchen,and 5 gallons per person for a House of Worship without a kitchen. Although this standard is used occasionally for projects of much smaller capacities,these wastewater flows are based upon archaic toilet flows of 5 gallons per flush and sink faucets of much higher flows than contemporary fixtures. Additionally,the Sewage Standards assign 150 gr Ions per toilet fixture/day_ (Parishioner/Staff use),which is typically taken to incorporate Is,sinks and drinking fountains.Again,this volume is based on archaic plumbing fix w high flow volumes. 2. The occupant load according to the Site Plans is anticipated to 914. 3. The total number of fixtures for the Temple expansion are in at the referenced Expansion Site Plans. 4. The total number of parking spaces after expansion is proposed t1! 310-�Phree people occupying each vehicle leads to the approximate total occupant load. The second criteria referenced above will be used to formulate an ADF from the Sikh Temple: Given the occupant load is,9 maximum of 914 people,which will occur only on Sundays,each person is assigned 1.5 gallons for toilet use,0.5 gallons for hand washing and 0.6 gallons for water used in the kitchen(s),which is conservative use. Thisbfmgs the total ADF to 2,400 gpd,which corresponds with mound systeffi design parameters. Each of the four cells within the mound is designed to manage 600 gpd, for a total ADF'of 2,400 gpd. 7