4.4 EAW Attachment - Laserfiche WebLink

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Page 15 the 169 wells identified, 154 were active (15 were noted as sealed). Table 16 summarizes the type of well and Appendix G includes a table of all 169 wells within one mile of the project area. No wells were identified within the project area by the County Well Index. The Phase I Environmental Report states that according to the “site owner, the property is currently connected to a water supply well” (Appendix H). Table 16. Wells Identified Within One Mile of the Project Boundary Well Type Number of Wells Domestic 127 Commercial 9 Industrial 7 Irrigation 6 Piezometer 6 Other or N/A 5 Monitoring Well 3 Test Well 3 Industrial/Commercial 1 iii) Wastewater – For each of the following, describe the sources, quantities and composition of all sanitary, municipal/domestic and industrial wastewater produced or treated at the site. (1) If the wastewater discharge is to a publicly owned treatment facility, identify any pretreatment measures and the ability of the facility to handle the added water and waste loadings, including any effects on, or required expansion of, municipal wastewater infrastructure. Sanitary sewer would be extended to serve the commercial/residential development. The Elk River website states the wastewater system consists of twenty-one lift stations, 77 miles of pipeline, and the Treatment Plant (24). The Elk River Comprehensive Plan states the system includes “approximately 81 miles of sewer lines and 21 lift stations that transport sewage to the treatment plant that is located near the intersection of U.S. Highway 10 and 169” (5). The current plant was built in 2017 and doubled the treatment capacity (5). “The City’s investment in upgrading treatment capacity was based on estimates of 2035 daily flow and projected areas of development” (5). Per City staff, the Elk River Wastewater Treatment Plant is currently treating 1.4 million gallons per day (MGD). The facility is designed to treat an average dry weather flow of 3.98 MGD and an average wet weather flow of 4.54 MGD. The only pretreatment measures are those that occur at the treatment facility. The comprehensive plan also states, “while there appears to be sufficient capacity at the treatment plant, wastewater services could potentially be constrained by the capacity of the pipeline system that conveys wastewater to the plant” (5). The existing sanitary sewer connection is located at the intersection of 165th Avenue NW & Gateway Road NW. The City reviewed this portion of sanitary sewer’s ability to handle added capacity for the Nature's Edge Business Center 3rd addition improvements. With project development a lift station will be installed to move sanitary sewer to the 165th and Gateway intersection for the project to have service. The