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SEWER & DRAIN . <br /> r <br /> The flow data and calculations are a snap shot from one week but is consistent with the 2019 & <br /> 2020 average gallons per day listed on the permit document. <br /> If the design peak flow is 1,478 gpd and the permit shows the existing dosing tank to have 1,426 <br /> gallons of surge capacity,you could double the existing flow from 1 gallon per person to 2 <br /> gallons per person and using the Sunday attendance number of 1272 people x 2 gallons per <br /> person,would equal a proposed 2,544 gallons on Sunday which would be within the Peak <br /> design flow of 1,478 gpd by using 1,066 gallons of the 1,426 gallons of surge capacity.This <br /> equation is just an exercise to show that doubling the flow would remain within the design <br /> parameters of the system but it is not expected that the use of this facility will increase the <br /> numbers by that much. <br /> The actual increase to the proposed addition of approx.300 people, using our average of 1 <br /> gallon per person would be closer to a 300 gallon per week increase if used at full capacity <br /> once a week. Even if used at full capacity twice weekly, we are looking at a 600 gallon increase <br /> per week. <br /> It appears that the original system should be able to handle the minimal increase in flow. If there <br /> are any flow increase concerns,we could change the permit requirement from recommending <br /> a 0 &M contract, to requiring one. <br /> Thank you for your consideration on this matter and feel free to call or email with any questions. <br /> 2034 <br /> #GN'I4i49i <br /> Oregon Sewer & Drain LLC <br /> 503.874.9414 Office <br /> 503.302.0833 Cell <br />