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III. NITRATE LOADING STUDY FINDINGS <br /> A. WASTEWATER FLOW VOLUME PROJECTIONS AND CHARACTERISTICS <br /> Wastewater Flow Volume Projections <br /> To determine nitrate-nitrogen loading from any project, wastewater flow volumes must be <br /> determined as accurately as possible. As referenced,the property contains the Harvest Bible <br /> Church and Harvest Preschool/Child Care, and the Aspire Vincent Shalvey Academy.School. <br /> As with other projects in San Joaquin County, numbers of onsite people for a particular <br /> Project/Parcel are dynamic, while the fixtures remain static. Fixture counts will be used to <br /> formulate wastewater flow volumes from the entire subject property. The following Table <br /> summarizes the onsite fixtures, with flow volume calculations following. J.C. Wagner/Precision <br /> Building Solutions provided the fixture counts based upon the California Plumbing Code (CPC) <br /> with Building Plans found in Appendix B. <br /> TABLE 4 <br /> FR <br /> 'ACII,TTY ! FIXTURE COUNTS <br /> / TOILETS SINKS URINALS <br /> Harvest Bible Church/Harvest Preschool-Child Care 9 8 1 <br /> Proposed Harvest Bible Church Addition 6 8 2 <br /> Aspire Vincent Shalvey Academy 18 18 0 <br /> TOTALS 33 34 3 <br /> Harvest Bible Church/Harvest Preschool - Child Care wastewater flow volume calculations: <br /> Assigning each toilet at the two schools to be flushed on average,once every 20 minutes over an eight-hour school day: <br /> 9+18=27 toilets x 3 flushes/toilet/hr=81 flushes/hr x 8 hr/day=648 flushes per day. <br /> 648 flushes/day x(1.5 gals flush+0.5 gals hand washing=2 gals/flush)= 1,296 gals/school day <br /> 1,296 gals/school day(ADF)x 5 d/wk x 50 wks/yr'=324,000 gals/school yr=0.99 ac ft. <br /> Proposed new Harvest Bible Church Addition wastewater flow volume calculations: <br /> 6 toilets x 5 flushes/toilet/Sunday=30 flushes/Sunday. <br /> 30 flushes/Sunday x 2 gals/flush=60 gals/Sunday x 52 Sundays/yr=3,120 gals/yr <br /> 2 urinals x 20_flushes/Sunday=40 flushes/Sunday x 1.0 gals/flush(0.5 gals flush+0.5 gals hand washing=1 gals/flush) <br /> =40 gals/Sunday x 52 Sundays/yr= 2,080 gals/yr+3,120 gals/yr=5,200 gals/yr=0.016 ac ft <br /> TOTALS: 0.99 ac ft+0.016 ac ft= 1.006 ac ft/yr <br /> This yearly wastewater generation will be used for the nitrate loading calculations below. <br /> I <br /> Page -6- <br /> Chesney Consulting <br />