8. EDSR 01-9-2012 - Laserfiche WebLink

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Road, including a connection to the existing 1 G-inch watermain located at the northwest corner of the site. This second connection will benefit the system by increasing circulation and providing redundancy in the case of an emergency. Both the sanitary sewer and watermain extensions were evaluated as part of the 17155 Avenue Area AUAR. It was determined that providing sanitary sewer and watennain to this area will not require any additional improvements to the city's existing infrastructure. The existing trunk sanitary sewer and the city's Waste Water Treatment Plant have the capacity to handle the additional flow that will be generated by the development of this area. Similarly, the existing water system, including the city's supply wells and water towers, have capacity to serve this area without any additional improvements. Storm sewer is proposed to be installed to collect the storm water runoff that would be generated by the new roadway and directed to a new storm water treatment pond. The storm water treatment pond would be constructed in the southeast corner of the site adjacent to the existing wetland. Consistent with the street improvements, the storm water treatment pond would remain intact from the 2012 Street Improvements to the Ultimate Improvements. Additional storm sewer would be added when the westerly half of Twin Lakes Road is constructed. There will be wetland impacts due to the construction of the proposed improvements. The proposed street alignments cross the existing wetland where it is the narrowest to minimize the impacts. The wetland impacts are proposed to be mitigated either on site, in the southeast comer of the project area adjacent to the proposed storm water treatment pond, or through the city's existing wetland banking credits. Further evaluation of the preferred option or a combination of the two will be determined as the project is reviewed with the Technical Evaluation Panel (TEP). Estimated Costs and Fundine The total estimated cost for the Phase 1 Ultimate Improvements is $2,398,000. This estimate includes the constructions costs, a 10% contingency, wetland permitting, right-of--way acquisition, and 25% for engineering, legal, and administrative costs. Existing city and EDA development fund balances do not allow for the construction of the Ultimate Improvement option at this time. The estimated cost for the 2012 Improvements is $1,312,004. This estimate also includes construction costs, a 10% contingenry, wetland permitting, easement acquisition, and 25% for engineering, legal, and administrative costs. Both estimates include the sanitary sewer and watermain improvements. The 2012 Improvements are substantially less than the Ultimate Improvements because they do not include the westerly half of the Twin Lakes Road, the roundabout, or the reconstruction of portions of 171ST Avenue due to the new connection with Twin Lakes Road. A full breakdown of the project costs has been included as an attachment to this memo. Staff continues to explore partial funding of the development costs through various grant opportunities. There are no probable grant opportunities to fund the project at this time; as such, the following development funding option has been developed based on no grant funds being obtained. A breakdown of the funding sources for the 2012 Improvements is listed as follows: