Agenda - Parks and Recreation Commission - 04/10/2014

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SECTION 3 EVALUATION OF EXISTING FACILITIES A. GENERAL This Section provides a summary of existing water supply, treatment, storage and distribution facilities for the City of Ramsey. In addition, infrastructure needs will be assessed for each of the facilities. Figure 3.1 provides a location map of the existing system facilities. B. WATER SUPPLY 1. Existing Water Supply Facilities The City of Ramsey is underlain by two aquifers, the Ironton -Galesville and the Mount Simon -Hinckley formations. The City's wells are currently located in the Ironton -Galesville formation, which is located above the Mount Simon -Hinckley formation. Wells in the Ironton - Galesville formation are currently producing between 210 and 1450 gpm. A summary of the specific well construction is presented in Table 3.1. TABLE 3.1 CITY OF RAMSEY, MINNESOTA WELL CONSTRUCTION SUMMARY City Well No. 1 2 3 4 5 Unique Well No. 161441 416183 580303 580313 593672 Year installed 1984 1987 1997 1998 2000 Capacity 970 gpm 220 gpm 1450 gpm 850 gpm 850 gpm Casing (in)/Depth (ft) 14in/243ft 14in/240ft 24in/222ft 24in/191 ft 24in/210 ft Total Depth 448 ft 320 ft 345 ft 321 ft 316 ft Appendix B contains well logs for each of the existing wells. 2. Water Supply Capacity The Recommended Standards for Water Works (Ten State Standards) recommends that the average day demand be met by the firm well pumping capacity. In addition, the daily well output is calculated based on operating for 20 hours per day to allow 4 hours per day for aquifer recharges. Peak day demands can be met using the total well capacity, also calculated using 20 hours of pumping per day. Based on this, the existing capacity is 5.214 mgd and the firm capacity is 3.474 mgd as shown in Table 3.2. City of Ramsey, Minnesota — M21.34343 Page 3-1 Water System Study Prepared by Bolton & Menk, Inc.