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Response: NAWE used the following formula to calculate peak flows from average <br />flows less than 10 MGD (all flows in MGD): <br />Qpeak = 3.5 — (0.333 x Qave) <br />The method used is derived from Metcalf and Eddy, 3rd Edition, for estimating peak <br />flows. The only difference is that for this project, the ratio of residential to commercial <br />units when the rural areas are added is below that of a normal municipality. Because of <br />this, the maximum peaking factor was lowered from 4 to 3.5. <br />Comment 4.7: Table 18.7 - The flows for the Rum River District are higher than the <br />flows I had figured (3.2 vs. 2.9). This will make the total flow figures in the AUAR more <br />conservative. With the information I have it is hard to identify why the figures are <br />different. <br />Response: The AUAR flows are taken from the 1991 Comprehensive Sewer Plan. The <br />origin of the reviewer's numbers are not known. <br />Comment 4.8: The appendix (G) information identifies specific PIN numbers and flows <br />for some of the area to be developed but it is unclear what areas were figured for the <br />Rural Sub -Districts and Future Existing MUSA for Build -out. Also, some of the PIN <br />numbers are shown for both the Northwest and Southwest Sub -Districts. <br />Response: Duplicate property numbers were a mistake. Rural areas are the same as the <br />1991 Sewer Plan. Appendix G has been modified to reflect the comment. <br />Comment 4.9: The appendix (G) information Page 1 lists the Total Ramsey Town Center <br />Wastewater Flows twice with different flows. Total is spelled Totasl at the bottom of the <br />page. <br />Response: Appendix G has been modified to reflect the comment. <br />Comment 4.10: The appendix Refers to Hackenson Anderson Associates. Should be <br />Hakanson. <br />Response: Changed in text as suggested. <br />Comment #5. The Minnesota Pollution Control Agency (MPCA) is not able to review <br />the document because of limited staff resources available. This does not, however, <br />constitute waiver by the Agency of any pending permits it would later require. A copy <br />of the final AUAR is required. <br />Response. No change in the document required. <br />Comment #6. The Minnesota Department of Transportation (Mn/DOT) submitted the <br />following set of comments: <br />34-4 <br />