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1 infrastructure improvements. WSB handled the bidding process, including questions from 2 bidders and issuing of addenda. The inclusion of the storm water reuse system and associated 3 filtration beds made this more time consuming than a typical level of effort for both 4 answering questions and issuing addenda. 5 1.5 Federal Funding- 6 $1.6 million dollars of Federal UPA funding was provided by Metro Transit to construct 7 Phase 1 of this project. Due to the use of UPA money, the specifications had to include 8 several additional requirements, mostly for DBE requirements. WSB needed to coordinate 9 with Metro Transit personnel, obtained electronic copies of their forms, and reviewed and 10 redlined them for inclusion into the project manual. 11 2. Comprehensive Storm Water Plan 12 The original scope assumed that much of the water treatment for these public 13 improvements would be accomplished in concert with redevelopment. WSB was 14 responsible for After submittal of 60 percent plans with drainage treatment ponds shown 15 on redevelopment parcels, it was determined that the effort to coordinate a master 16 drainage plan with the use of ponds (and obtaining the additional right of way) would 17 increase the right of way acquisition cost, as well as create potential future obstacles for 18 the property owners to redevelop their sites in accordance with the Twin Lakes design 19 principles. At that time, the City directed WSB to design a storm treatment system that 20 would be located entirely within the boundaries of the right of way that was being 21 acquired for the project. This included a storm water reuse system, complete with 22 underground retention and storage, as well as a force main for conveyance of the storm 23 water to the irrigation system. These items increased the overall cost to provide these 24 services by $81,733. The following tasks were required to complete the final design of 25 the system. Many of these tasks were not contemplated as part of the original proposal, 26 and required the redesign of the storm sewer conveyance system. 27 2.1 Changes in the Storm Water Conveyance System- 28 The original conveyance system directed storm water to a series of ponds throughout the 29 project. Per the City's direction, all the storm water was now to be directed to a central 30 location for storage. WSB reworked the conveyance system to direct water to the future 31 remnant parcel at the northeast corner of the roundabout. However, through development of 32 the MPCA Response Action Plan, it was determined that this location would not be feasible 33 due to high potential for contaminated soils. Thus, WSB had to design the conveyance 34 system a third time, resulting in two systems -one that drained as much as possible to the 35 new storage location at the north end, and the rest toward Cleveland Avenue. This meant 36 redoing spread-runby calculations, modifying catch basin layouts, realigning pipes, adjusting 37 pipe grades, and deleting/adding pipe profiles to the plans. 38 2.2 Storm Water Storage, Reuse, and Infiltration System - 39 Custom design of the storage, reuse, and infiltration system was required. Activities included 40 research of available systems and materials; coordination with potential suppliers to provide 41 a wide variety of alternatives for consideration; schematic design of the system to meet 42 requirements for seasonal considerations, infiltration rates and volumes, storage versus reuse 43 rates, and maintenance access; introduction of lift station and well system design expertise 3