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Environmental Health Division's requirements for septic tank design or construction standards. 6.3.1 Assumptions for the Phase 2 Expansion This subsection presents assumptions for the Phase 2 expansion of the property. The assumptions are used in the calculations of liquid and nitrogen loading presented in Appendix F. The assumptions for the Phase 2 expansion are as follows: • The liquid loading rate is 45 gallons/person-day; • The nitrogen loading rate is 11 .5 g N/person-day; • Maximum church gatherings will not exceed 250 people. The associated waste will result in liquid and nitrogen loading equivalent to 0.5 day (i.e., 22.5 gallons/person and 5.75 g N/person) for those 250 people on the day of that gathering; • Four people will occupy the facility 5 days per week from 8:00 A.M.; until 5:00 P.M. The associated waste will result in liquid and nitrogen loading equivalent to 0.75 person/day (i.e., 33.75 gallons/person-day, and 8.63 g N/person-day) for those 5 days; and • One additional gathering of 25 people will occur one evening per week. The associated waste will result in liquid and nitrogen loading equivalent to 0.25 person/day (i.e., 11 .5 gallons/person, and 2.88 g N/person) for that evening. 6.3.2 Liquid Loading — Phase 2 Expansion Based on the assumptions presented above, estimates for the liquid loading were calculated as shown in Appendix F. The Phase 1 liquid loading was estimated as approximately 2,025 gallons/week. The larger gathering which will accommodate 250 people should produce an average of approximately 6,525 gallons/week. 6.3.3 Nitrogen Loading — Phase 2 Expansion Based on the assumptions listed in Section 6.3.1 , nitrogen loading calculations for the Phase 2 expansion were completed and are included in Appendix F. The total nitrogen loading for one week is estimated at 1 .68 kilograms (3.7 pounds) of total nitrogen. On an annual basis, this would total 192 pounds of total nitrogen. SAC 125.12 1 1 DAMES & MOORE