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II.rr MICRO-SEP-TEC ENVIROSERVER 1200 WASTEWATER MANAGEMENT SYSTEM: OPERATIONAL PARAMETERS A. ON-SITE PER CAPITA USAGE The actual number of people that are currently on-site on a daily basis within the Carmelo Industrial Park, and therefore potentially using the restroom facilities, is difficult to quantify. This uncertainty also applies to the proposed expansion for the construction of the two new buildings. It is my understanding, that proposed Building "A"will have two bathrooms (one toilet, one sink) and proposed Building `B" will have six bathrooms. Although these fixture numbers may be used to calculate an average daily wastewater flow, it is more prudent to use the design number of parking spaces for the new development, since EHD relies on parking spaces as a more potentially accurate predictor for estimating average daily flow volume maximums. The number of parking spaces designated for the new development is 41. As noted on the Site Plans, there are 16 spaces with asterisks next to each stall on the west side of the project. These are parking spaces designated for "Phase P' of the project, and consequently should not be factored into "Phase Il" sparking spaces. Assigning the EHD standard of 15 gallons per day for each of the 41 parking spaces gives a conservative Average Daily Flow (ADF) value of 15 x 41 = 615 gallons per day exclusively for the new development. B. METERED AVERAGE DAILY FLOW VOLUMES AND PROJECTED FLOW VOLUMES FROM NEW THE NEW DEVELOPMENT Since EHD required a flow meter initially be installed on the Enviroserver effluent pump to measure the volume of effluent pumped to the filter beds, the actual Average Daily Flow (ADF) volume can be calculated. The mathematical calculation used to determine ADF is subject to interpretation. The ADF can be calculated as every day of the week, month or year between meter readings without taking into account "work days," versus theoretically estimating the number work days over the time period between readings. Obviously using the total number of days between meter readings gives a lower ADF by as much as 30% in comparison to factoring work days. This would assume work days refers to Monday through Friday, although many of the on-site business may operate on Saturday and even Sunday. Therefore, using Monday through Friday"work days" may not give a"true"ADF. The main issue with the ADF calculation is the premise that the EnviroServer can process a maximum of 1,200 gallons per day. The meter was installed in November 2000, and the reading for this report was done in July 2006. Taking the initial reading of the flow meter of 152,350 gallons (Note: The flow meter had been used on another pipeline, and therefore not "zeroed") and the reading for July 2006 was 1,038,160: 1,038,160 - 152,350 = 885,810 gallons in 68 months, or 5.67 years. 5.67 years x 52 weeks per year= 294.67 weeks. Assuming a work week of 5.5 days per week =294.67 x 5.5 days per work week= 1,621 days. 885,810 gallons 1,621 work days = 547 gallons per work day. Adding 547 gallons per work day ADF, plus the projected theoretical ADF of 615 gallons per work day for the new development— 547 + 615 = 1,162 gallons per work day. Page -2- Chesney Consulting