Appendices June 5, 2012
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APPENDICES June 5, 2012 Table of Contents APPENDIX A Baseline Reports 01 Infrasturcture 02 Housing 08 Economy 18 Energy 28 Health 32 Downtown 62 Transportation 66 Parks 68 APPENDIX B Focus on Energy 73 APPENDIX C Focus on Walkable Mixed Use Centers: Scenarios Impact Study 89 Introduction 91 Approach 101 Results Summary 111 Revenue Comparisons 129 Expense Comparisons 147 APPENDIX D MindMixer Idea Report 177 APPENDIX A Baseline Reports INFRASTRUCTURE CITY OF FARGO Water SUMMARY Our WTP was designed for expansion from 30 mgd to The City of Fargo Water Treatment Plant (WTP) currently 45 mgd with construction of an additional sedimentation operates a two-stage lime softening surface water basin, solids contact basin, ozone contactor, and gravity treatment plant that was constructed in 1997 with a rated filters. The City also owns a 40-acre parcel of land in capacity of 30 million gallons per day (mgd). There are southwest Fargo that was planned, sited, and purchased currently nine water towers with the tenth one under for construction of a future satellite WTP, along with the construction. The city serves its residents and the Cass 5.5 million gallon Ground Storage Reservoir and Pump Rural Water Users district with high quality drinking Station that are currently under construction. The last water. The recent annual average water demand is three phases of the 36” transmission water line will approximately 12mgd, and a recent peak day demand be completed this year and the ground storage tank was approximately 18 mgd. The current trend of our is scheduled to be completed in April of 2012. This will maximum pumping capacity has a 1.5 peaking factor. improve the water pressure in southwest Fargo and for History has shown us a 2.0 peaking factor with a peak Cass Rural Water Users in that area. The architecture of capacity of 23 mgd. The current lowering of the peaking the new ground storage reservoir will match the existing factor may be due to the wet cycle we are currently in water treatment plant. and/or the cognizance of the general public on water conservation. Previous planning efforts have assumed that the existing WTP would be expanded prior to construction The City of Fargo is concerned about the quality of of a satellite WTP; however, this assumption may be its source water due to increase flow projections from readdressed due to the future need of sulfate removal Devils Lake. The City obtains its water from both the from the Sheyenne water intake. The ultimate goal is Red River and Sheyenne River, and strategically selects to have I-94 split the service area of the satellite WTP/ the proper sources and blends of sources to provide its ground storage reservoir and the existing WTP. customers with high-quality drinking water. In recent years, there has been growing concern over the water The City of Fargo currently implements a water main quality in the Sheyenne River, primarily associated with replacement program. This program replaces all cast elevated sulfate concentrations coming from the Devils iron pipe with pvc (plastic) pipe, due to the high number Lake Emergency Outlet. Due to the anticipated elevated of water main breaks and the corrosiveness of our soil sulfate concentrations in the City’s source water and in relation to the cast iron pipe. The program targeted the inability of the existing WTP to remove sulfates, the areas of the city with an excessive number of water City of Fargo is implementing a pilot study to address main breaks. We have reduced our water main breaks treatment processes for the removal of sulfates and other from a peak of 603 in 1988 to 48 in 2010. Today we dissolved solids. have replaced 58.6 miles of cast iron pipe with 45 miles remaining. We replace approximately 4 miles a year, APPENDIX | 3 therefore all the cast iron pipe should be replaced in service in 2010. This line was designed to reduce flows approximately 11 years. in the existing Westside interceptor. The new 45th Street Interceptor line provides for expansion to the south and CITY OF FARGO SANitarY SEWER SUMMARY southwest. With the construction of the new sewer line The City of Fargo wastewater treatment facility was two new lift stations were also constructed, lift station #60 constructed in a number of phases dating back to the at 30th Avenue and 43rd Street South and lift station #61 1930s. The facility currently consists of influent pumping, at County Road 20 (40th Avenue) and 37th Street North. screening, grit removal, pre-aeration, primary clarification, Lift Station #61 was designed to send flows directly to BOD trickling filters, intermediate clarifiers, nitrification the Waste Water Stabilization Ponds (WWSP) during wet trickling filters, final clarification and chlorination. The weather flows and when the river is at a 20’ flood stage. solids removed from the process are further treated by This reduces the flows at the WWTP. primary and secondary digesters followed by dewatering in sand drying beds or belt filter presses. The stabilized The City of Fargo constructed the WWSP in the biosolids are hauled to the city landfill for disposal. early 1970’s. The WWSP consist of six cells, each approximately 95 Acres able to hold a total of 1.6 billion The City of Fargo Wastewater Treatment Plant (WWTP) gallons. Today they are used for: currently has the capacity to treat 15 million gallons per • effluent disposal during flood events when day (mgd). Our average current flow is 12 mgd. The discharge to the river is not possible peak pumping capacity is 29 mgd. Treated water is • effluent disposal and polishing during periods discharged by gravity flow directly to the Red River, when the plant cannot meet effluent limits however when the river reaches a flood stage of 20’ it • wet weather flow diversion from lift station #61 can no longer enter the river. The treated water is then when flows exceed the capacity of the wastewater pumped to the Wastewater Stabilization Ponds (WWSP). plant. The WTP receives sewage from the residents of Fargo and the surrounding communities including; Frontier, Improvements are currently being made to the WWSP. Prairie Rose, Briarwood, Oxbow, Highland Park, Reile’s We replaced valves, fixed control structures and Acres, North River, Harwood, and Rural southeast Cass stabilization issues in Cell 5, and patched paved areas Developments. that were breaking up. There are three main sewer interceptor lines; the CITY OF FARGO STORM SEWER SUMMARY Broadway line, the Westside interceptor, and the 45th The storm sewer utility is part of the City of Fargo Street interceptor. The Broadway line services the Engineering Department and directly managed by a central part of the City, with the Westside serving west senior engineer. The utility is funded through user and south. The 45th Street Interceptor line was put into fees with general budget support for capital projects. Currently the department has 4.5 FTE and administers with development. maintenance activities through our public works department. The storm sewer is a separate system from the sanitary sewer. Unlike the sanitary sewer system the storm System Profile (Estimate) system is not connected to a treatment plant, so whatever Miles of pipe 350 washes down the storm drain goes untreated into the Red Manholes 4,836 River. The EPA recently mandated that these sites be Inlets/catch basins 9,822 designed to enhance storm water quality. Fargo is an EPA Lift Stations 72 Phase II, MS4 community permitted through the North Dakota Health Department. Accordingly, the six minimum The storm sewer system collects, transports, and control measures of the program are aggressively discharges precipitation into the river and drains pursued to promote water quality. throughout the city. Managing surface runoff is challenging in our flat, flood prone landscape. To The storm water division also enforces and manages our successfully move storm water we use a complex series flood plain development. The current base flood elevation of conveyance systems including natural and manmade (BFE) is river stage 38.3 feet. FEMA is in the process features like natural coulees, legal drains, underground of remapping our flood plain and the new BFE will be pipes, inlets, lift stations and retention ponds. Our lift 39.5 feet. Fargo currently requires that new buildings stations usually only function during flooding events. be constructed with a lowest opening of 2.5 feet above When the river and drains are at a normal water elevation the proposed BFE (to a level of 42 feet) which is also the storm sewer pipe will gravity flow to these river and approximately one foot higher than our flood of record drains, as the water elevations increase, gates close and (2009 event-40.84 feet). Fargo is currently pursuing the lift stations will start working to pump the water into through the Corps of Engineers a flood diversion project the river and drains. which would divert major flood events around the city and could reduce those flooding impacts and remove many The system is large with over 350 miles of pipe ranging properties from needing to purchase flood insurance as in diameter size from 4 to 132-inches. Even with this the new FEMA flood plain map is adopted. level of capacity not all of the rainfall can be drained quickly. Our storm sewer pipe is designed to a 2 year CITY OF FARGO STREET LIGHTING SUMMARY rainfall event using a 45% impervious factor which The City of Fargo Street Lighting Department is funded reflects normal residential development. Accordingly, by utility fees paid for by all residential and business to help meet increased volume quantities from larger property owners.