09/02/2008 Council Packet - Laserfiche WebLink

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• • • the iron and manganese. The treatment study look at to methods of filtering the water; 1) gravity filter and 2) pressure filters. Gravity filters require more space thus increasing the floor plan and the costs with it. Pressure filters require less space because the water is moved through the filters under pressure requiring less surface area and a smaller floor plan. The treatment plant costs and a timeframe for construction are shown in table 8 -9. The costs are based on 2008 dollars. Conservation: The current system is using considerably more water per capita than the DNR guidelines. The city submitted its 10 year Conservation and Emergency Plan to the DNR in 2007 and is currently preparing updates to this Plan. The City has adopted a odd / even day and time of day sprinkling ban for all residents served by City water. This ban does not allow sprinkling on odd numbered days for even addressed residents and even numbered days for odd addressed residents. The time of day ban does not allow lawn sprinkling any day from 10:00 am to 6:OOpm. The City has also enacted a rain sensor distribution program where rain sensors are provided to residents with irrigations systems without a rain sensor. These steps taken by the City are in an effort to reduce water consumption and meet the Department of Natural Resources (DNR) Guidelines. These efforts will also aid in the reduction of capital investment costs for water distribution system infrastructure. Emergency Management: The City has an Emergency Management Plan for the water system as submitted to the EPA and to the DNR. This Plan should be reviewed annually and kept current. Capital Plan to 2030 and Beyond: The 2007 Treatment Study also updated the water system Capital Plan to 2030. The revised Table 8.9 Capital Improvement Plan to 2030 includes changes based on the higher population forecasted. They are as follows: 1. There are revisions in the trunk watermain system because of the larger demands for the larger population and the larger industrial area. There are also revisions to improve redundancy by removing the northern loop and adding mains in the south. 2. The schedule and phasing proposals for trunk watermains have been revised to match the proposed phasing plan in the new Comprehensive Plan. 3. The booster station, additional storage, and the water plant, if built, will need to be larger and will require a somewhat larger piece of property. The planned raw watermain sizes should be revisited if the centralized boosters, storage and plant move forward. 4. Wells #10, #11, and #12 although included in the capital plan will not be required until after 2030. 8 -18