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Distribution <br />Our system is primarily comprised of 6"-16" water mains with several 4" lines. We <br />have variable water main materials ranging from ductile iron & a minimal amount of <br />cast iron in the older part of downtown Elk River & some High Density Polyethylene <br />(HDPE) in our newly constructed or updated areas. For our new construction areas <br />we only allow ductile iron or HDPE. <br />VI. Need for Improvements <br />Source <br />Well #9 is our newest well that was added to our system in 2008. As we started <br />exercising & operating Well #9 it was evident that the Iron & Manganese exceeded <br />their MCL for Secondary Drinking Water Standards. <br />Treatment <br />Our ramifications of repair to this issue were to use aPoly-Ortho to keep the Iron & <br />Manganese sequestered. We are only operating Well #9 in the summer months (Peak <br />times) since our Iron & Manganese are not at their proper MCL's. In the winter, <br />ERMU runs Well #9 to waste to keep the aquifer fresh. In time, if we proceed to <br />operate Well #9 without repair we will find that our system water quality will <br />diminish. Our customers will find problems with dark red staining on their washed <br />clothes, house siding, sink basins, and overall aesthetics of drinking water will be <br />unfavorable. <br />Well Well Iron Sample <br />Standard 0.3 m Well Manganese Sample <br />Standard 0.05 m ) <br />8 0.03 .006 <br />9 0.1 S 0.234 <br />VII. Proposed Construction Plan (Map Attached) <br />1. Re-route Well #9 down to Well #7 Iron & Manganese Filter <br />2. Re-route Well #8 up to Well #9 for CL2 & Fluoride treatment <br />VIII. Alternatives If Funding By Revolving Loan Is Denied <br />ERMU will either be granted financial aid to re-route Well #9 to a filtration plant or <br />will: <br />