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can be met using the total well capacity, also calculated using 20 hours of <br />pumping per day. Based on this, the existing capacity is 9.294 mgd and the firm <br />capacity is 7.554 mgd as shown in Table 3.2. <br />Table 3.2 <br />Well Capacity <br />City of Ramsey, Minnesota <br />Well Pump Capacity Total Daily Capacity <br />(gpm) (mgd)* <br />1 970 1.164 <br />2 220 0.264 <br />3 1,450 1.740 <br />4 855 1.026 <br />5 850 1.020 <br />6 1,000 1.200 <br />7 1,000 1.200 <br />8 1,400 1.680 <br />Subtotal 7,745 9.294 <br />Minus largest well out -of -service 1,450 <br />Maximum Firm Capacity of Existing Wells 6,295 <br />* Calculated based on 20 hrs. of pumping/day, max. pump capacity <br />1.740 <br />7.554 <br />3. Existing Water Supply Quality <br />Key issues pertaining to Water Quality are as follows: <br />1. The existing water supply quality meets all of the current Safe Drinking Water <br />Act (SDWA) maximum contaminant limits (MCL's). In addition, there are no <br />revisions to the MCL's under consideration at this time which would impact <br />the existing ground water supply. These limits are set to protect the public <br />from any health risks that may be found in water supplies. <br />2. Iron and manganese exceed the SDWA secondary limits in all of the wells. <br />The SDWA contains secondary limits, which recommend water quality <br />parameters, that although not health risks, reduce the quality of water, typical <br />due to staining or taste and odor issues. <br />3. The hardness of Ramsey's water is classified as hard, based on American <br />Water Works Association (AWWA) water hardness scale. Since many <br />homeowners prefer to have in -home softeners, providing softening at the <br />municipal scale is usually not considered to be cost effective by the <br />municipalities. <br />City of Ramsey, Minnesota — R13.104504 Page 15 <br />Comprehensive Water System Study Prepared by Bolton & Menk, Inc. <br />