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

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that there will be increasing demand for improved water quality regarding Iron and Manganese levels. In addition, due to significant increases in the water supply demands, surface water sources will need to be evaluated to meet the City's water needs. A water treatment facility would be required to treat surface water sources. Due to the large number of wells which would be required to meet the future system supply needs, the current system of multiple chemical feed points may result in water quality inconsistency across the system. Also, multiple feed points will represent a substantial security risk to the system. Construction of treatment facilities will be considered in Section 5 — Water Supply and Treatment. D. STORAGE 1. Existing Water Storage Facilities Existing storage facilities in the City of Ramsey consist of two (2) elevated water towers as shown in Table 3.5. TABLE 3.5 EXISTING STORAGE FACILITIES Tower No. 1 Tower No. 2 Capacity (gals) 500,000 1,500,000 Year Constructed 1989 2000 High Water Level 1036 1035 The principal purpose of storage is to provide the ability to equalize pumping rates during periods of variable rate of demand. Adequate storage permits a reduction in the size of pumps required to supply a community because peak demands are diminished by the reserves provided by the storage. The other reasons for providing storage include: • Fire protection • Emergency requirements (pump failures, power failures, etc.) • To equalize pressure in the distribution system 2. Evaluation of Water Storage Capacity Storage adequacy can be assessed using the Average Day Criteria or the Maximum Day, Fire Protection and Emergency Storages Criteria. These two sets of criteria are discussed in the following paragraphs. City of Ramsey, Minnesota — M21.34343 Page 3-6 Water System Study Prepared by Bolton & Menk, Inc.