West Bountiful City. Water System Capital Facilities Plan

Transcription

1 Water System Capital Facilities Plan August 2008

2 TABLE OF CONTENTS 1.0 Executive Summary Definition of Terms and Abbreviations Introduction Background Scope of Investigation Existing conditions Water Source Water Storage Water Distribution Funding for Existing System Future Conditions Growth and Demand Projections Water Source Water Storage Water Distribution Conclusion Recommendations Water Capital Improvement Plan Cost Estimate Impact Fees References Appendix... 26

3 LIST OF FIGURES Figure 4.1. Water System Grid...8 Figure 5.1: Developable Land...9 Figure 5.2. Future Land Use Plan...10 Figure 6.1: Map Showing Water Projects...14 LIST OF TABLES Table 1-1: Summary of Project Costs...1 Table 4-1: Source Demand for Indoor and Outdoor Water Use...4 Table 4-2: Non residential ERC values...4 Table 4-3: Current Minimum Water Source Requirements...5 Table 4-4: Equalization Storage Volume for Indoor and Outdoor Water Use...6 Table 4-5: Current Storage Requirements...6 Table 5-1: Demand from New Development...11 Table 5-2: Future Water Demand Summary...11 Table 5-3: Comparison of Current Water Source Capacity vs. Future Demand...12 Table 5-4: Future Storage Requirements...13 Table 6-1: Summary Matrix of Projects...15 Table 6-2: Summary of Project Costs...24

4 1.0 EXECUTIVE SUMMARY The (WCFP) documents the evaluation of the existing West Bountiful City water source, storage, and distribution system infrastructure, performed by Caldwell Richards Sorensen. Existing deficiencies in the City s water system and future improvements necessary to meet projected demands are identified in the WCFP project list found in the Appendix of this report. The improvement projects in the WCFP are necessary in order to maintain the current Level of Service (LOS) provided to the residents of West Bountiful City. The existing water system supplies, stores, and distributes culinary water to nearly all residents and businesses within the City limits. Current water sources include the City s Well (350 gpm) and a Weber Basin connection (1000 gpm), which provide sufficient water to satisfy the minimum demand required by the State of Utah. The water system presently operates with two storage reservoirs having a combined 2.5 Million Gallons (MG), which is sufficient for current water demands and complies with State regulations. The transmission lines conveying water throughout the City have the capacity to meet peak demands. Some of the lines are aging to the point that they are becoming unreliable. The City is expected to approach built-out conditions by The future water source demand is projected to be 2118 gpm, which exceeds the current source capacity by 768 gpm. Additional water source capacity will become necessary within 5 years and additional municipal water rights will also need to be acquired if the City wishes to use their own well water. The current storage capacity will be exceeded within 15 years and by 2028 another 0.5 MG of storage will be necessary. Existing transmission lines will need to be replaced and new lines will need to be installed to serve areas expected to be developed. Several major replacement projects have been identified for immediate attention. It is recommended that impact fees be assessed to help fund the improvements related to growth. It may also be necessary to increase water rates in order to fund improvement projects that are necessary to maintain the current level of service to existing businesses and residents. Table 1-1 contains summary of the estimated costs and priority level of the recommended improvement projects. Table 1-1: Summary of Project Costs Priority Number of Projects Existing Deficiency System Improvement Project Improvement Total High 10 $2,344,249 $1,754,810 $ 0 $4,099,059 Medium 12 $3,934,624 $5,336,054 $ 499,800 $9,770,478 Low 8 $1,424,611 $1,873,668 $2,068,824 $5,367,103 Total 30 $7,703,483 $8,964,532 $2,568,624 $19,236,639 1

5 2.0 DEFINITION OF TERMS AND ABBREVIATIONS CFP Capital Facilities Plan CFS Cubic Feet per Second CIP Capital Improvement Program CRS Caldwell Richards Sorensen DSB Deuell-Stone-Barton Canal ERC Equivalent Residential Connection gpd Gallons Per Day gpm Gallons Per Minute LYRB Lewis Young Robertson and Burningham MG Million Gallons MGD Million Gallons per Day UDOT Utah Department of Transportation WCFP 2

6 3.0 INTRODUCTION 3.1 Background This study was performed to update the previous (WCFP), which was prepared by the City in A WCFP provides an evaluation of the water system and how it is maintained and funded, looking at existing as well as future built-out conditions. Improvements necessary to maintain an adequate and consistent level of service are identified and prioritized. Changes in growth patterns, system degradation, and escalating construction costs make it necessary to periodically reevaluate the water system needs and update the WCFP in order to maintain an adequate level of service and to verify that funding sources are adequate to support the future needs of the water system. 3.2 Scope of Investigation Caldwell Richards Sorensen (CRS) was retained by West Bountiful City to evaluate the City s water system and prepare a WCFP. This evaluation included collecting information about the system (repair history, age, performance, size and type of pipes and storage facilities, etc.) and identifying existing deficiencies. Using published population projections and land use maps provided by the City, the future demands were calculated and future improvements were identified. A list of all improvement projects including cost estimates and proposed construction dates was prepared. The WCFP provides documentation for the water system analysis performed by CRS and presents the recommended system improvement projects to be included in the City s Capital Improvement Program (CIP). 3

7 4.0 EXISTING CONDITIONS 4.1 Water Source State Requirements The State of Utah Drinking Water Rules (R ) require sources for public water systems to meet usage demands under two separate conditions. First, the source must be adequate to meet the anticipated peak-day demand; second, the source must be able to provide for the average yearly demand. Table 4-1, provided by the Utah Division of Drinking Water, provides the basis to determine the indoor and outdoor peak day and average yearly demand. Criteria presented in Table 4-1 include residential and non-residential demands, and are defined in terms of Equivalent Residential Connections (ERC). Table 4-1: Source Demand for Indoor and Outdoor Water Use Source Demand for Indoor and Outdoor Use Type of Water Use Peak Day Demand Average Yearly Demand Indoor Water Use 800 gpd/erc 146,000 gal/erc Outdoor Water Use 1, gpd/erc 121,860 gal/erc 1 Outdoor demand is based on an average lot size of ½ acre and assumes that 40% of the lot is irrigated. 2 Outdoor use only applies to approx. 25% of residents because the other have secondary water service. The ERC per non-residential connection is based on the size of the connection. The ERC per connection value for various connection sizes is specified by AWWA and this information is also included in Table 4-2. Table 4-2: Non residential ERC values Connection Size ERCs 3/ /

8 Using information from the City s utility database and applying Table 4-2, culinary water is currently provided to 1769 ERCs. Based on the requirements presented in Table 4-1, the City must be able to meet the minimum source requirements as presented in Table 4-3 below. Table 4-3: Current Minimum Water Source Requirements Current Minimum Water Source Requirements Type of Water Use Peak Day Demand Average Yearly Demand Indoor Water Use 1.41 MGD (983 gpm) MG (793 Ac-ft) Outdoor Water Use 1, MGD (313 gpm) MG (148 Ac-ft) Total Water Use 1.86 MGD (1296 gpm) MG (940 Ac-ft) 1 Outdoor demand is based on an average lot size of ½ acre and assumes that 40% of the lot is irrigated. 2 Outdoor use only applies to approx. 25% of residents because the other have secondary water service Weber Basin West Bountiful City is under contract with Weber Basin Water Conservancy District to purchase MG (750 acre-feet) of culinary water every year. This is the City s primary water source and is adequate to meet the City s normal demands except during the peak summer months. Weber Basin Water Conservancy District supplies this water through a meter station and a pressure reducing station located at 300 East 500 South in Bountiful City. The approximate capacity of this connection is 1.44 MGD (1000 gpm). Under normal operating conditions, only 1.15 MGD (800 gpm) is necessary to meet the City s needs Stone Creek Well The City owns a 16 inch, 420 foot deep well located at 550 West 1000 North. The City has the water rights to pump 1.29 MGD (898 gpm, 2.0 cfs) for a total of MG (660 acre-feet) per year from this well. However, the well and appurtenant pumping and treatment facilities are only capable of producing culinary water at a maximum rate of 0.50 MGD (350 gpm), which would yield MG (565 ac-ft) per year if the well were pumped continuously. The City presently uses this well to supplement the water purchased from Weber Basin. 4.2 Water Storage State Requirements In the State of Utah Drinking Water Rules (R ), there are specific requirements for water storage. Storage facilities must provide equalization storage to satisfy average day demands for indoor and outdoor use, fire suppression storage, and emergency storage to meet the demands in the event of an unexpected emergency. Equalization storage requirements for 5

9 indoor and outdoor water use are determined by multiplying the number of ERCs by the appropriate volume per ERC value as presented in Table 4-4. Table 4-4: Equalization Storage Volume for Indoor and Outdoor Water Use Equalization Storage for Indoor and Outdoor Water Use Type of Water Use Volume per ERC Equalization Storage Indoor Water Use 400 gal/erc 0.71 MG Outdoor Water Use 1,2 570 gal/erc 0.22 MG Combined Indoor/Outdoor Use 970 gal/erc 0.93 MG 1 Outdoor demand is based on an average lot size of ½ acre and assumes that 40% of the lot is irrigated. 2 Outdoor use only applies to approx. 25% of residents because the other have secondary water service. Fire storage volume is determined by the South Davis Metro Fire Marshall and is based on the structure type requiring fire protection. West Bountiful City is mostly a residential/agricultural community however there are also several large commercial structures which require larger fire suppression capacity. The Fire Marshall requires a fire storage volume equal to 3000 gpm for 4 hours be maintained. Subsequently, the required fire storage volume is calculated to be 0.72 MG. No specific emergency storage amount is required by the State of Utah Drinking Water Rules, but in West Bountiful City a minimum of half of an average day s demand should be reserved for emergencies, this is approximately half of the equalization storage or 0.5 MG. Table 4-5 summarizes the minimum requirements for water storage and the actual storage volume with which the City currently operates. Table 4-5: Current Storage Requirements Current Storage Requirements Type of Storage Equalization Storage Fire Suppression Storage Recommended Emergency Storage Total Required Storage Actual Storage Storage Volume 0.93 MG 0.72 MG 0.5 MG 2.15 MG 2.50 MG 6

10 4.2.2 Current Storage The West Bountiful City water system currently operates with two storage reservoirs. A 1.0 MG reinforced concrete reservoir constructed in 1979, is located at approximately 300 East and 500 South in Bountiful City. The second reservoir is 1.5 MG in size and was built in 1995, and is located at approximately 600 East and 400 North in Bountiful City. 4.3 Water Distribution The water distribution system owned and operated by West Bountiful City was constructed in the late 1950s. The top of the City s reservoirs are at approximately 4464 ft, the highest elevation within the service area is 4330 ft, and the lowest elevation is These elevations dictate the normal operating pressures within the service area, which range from 58 to 106 pounds per square inch (psi). The major transmission lines conveying water from the reservoirs to and throughout the City range in size from 8 to 14 inches. These transmission lines are generally found within the main streets throughout the City, which loops the system and creates a strong grid that provides adequate fire protection and redundancy to most areas. The water system grid is shown in Figure

11 Figure 4.1. Water System Grid The distribution system has been in service for approximately 60 years and now requires frequent maintenance and repair work to keep the system operating properly. Due to age and the growing demand being placed on the water system, it is necessary to consider replacing, upsizing, and installing new system segments. 4.4 Funding for Existing System The water system is funded by the water fund, which is an enterprise fund supported by water rates collected from residents and businesses within the city. Current water rates are sufficient to maintain the existing system but are insufficient to pay for additional capital improvements such as replacing old and installing new waterlines. Impact fees and new connection fees help cover costs for repairs but are insufficient to cover large capital improvement costs. 8

12 5.0 FUTURE CONDITIONS 5.1 Growth and Demand Projections Future conditions are based on a built-out scenario, which is expected to be realized by Built-out conditions are estimated using the Future Land Use Plan outlined in the City s General Plan. The Future Land Use Plan defines the maximum number of units that can be developed per acre within each zone. Within the current City boundary and areas planned for annexation, there are 934 acres of developable land. These undeveloped lands are identified in Figure 5.1. Figure 5.1: Developable Land Figure 5.2 is taken from the General Plan and shows the Future Land Use Plan. The majority of the developable land is zoned for rural density development and is located west of 1100 West. 9

13 There is also a significant amount of developable land within the low and medium density residential and light industrial zones. The low and medium density residential areas are generally between 1100 West and 500 West and will consist largely of infill type development. Light Industrial development will be allowed along 500 South and near the Legacy Interchange at 500 South. Figure 5.2. Future Land Use Plan Table 5-1 provides a breakdown of the developable acreage within each zone showing the maximum number of connections and the peak day demand within each land use zone based on the zoning restrictions. The peak day demand is calculated using 800 gpd per connection as required in the State of Utah Drinking Water Rules. The City currently requires all new developments use secondary water for outside use; therefore projected demands are based on indoor use only. It was assumed there will be two ERCs per acre in the light industrial zone. This assumption is based on an analysis of the currently developed commercial and light industrial areas within the City. 10

14 Table 5-1: Demand from New Development Demand from New Development Land Use Zone Allowed Density (lots/acre) Developable Acreage Number of ERCs Peak Day Demand (MGD) Rural Density (A-1) Low Density (R-1-22) Medium Density (R-1-10) (299 gpm) (160 gpm) (173 gpm) Light Industrial (194 gpm) (L-I) 1 Total (826 gpm) 1 Assumed two ERCs per acre for Light Industrial Zone. 5.2 Water Source The water source demand under built-out conditions was determined by adding the existing demand and the projected demand from new development. Table 5-2 provides a summary of the total future water demand. Table 5-2: Future Water Demand Summary Summary of Water Source Requirements Type of Water Use Number of ERCs Peak Day Demand Average Yearly Demand Existing MGD (1292 gpm) MG (940 Ac-ft) Additional MGD (826 gpm) MG (664 Ac-ft) Total Future MGD (2118 gpm) MG (1,604 Ac-ft) 11

15 As described in Chapter 4, the City currently has two water sources, Weber Basin Water Conservancy District and Stone Creek Well. At built-out conditions an additional 1.11 MGD (768 gpm) of source water will be needed to meet the peak day demand as well as an additional MG (289 ac-ft) to meet the average yearly demand. The City will also need to review their water rights to verify that sufficient groundwater can be acquired to meet these demands. Table 5-3 provides a comparison of the current source capacity and the future demand. Table 5-3: Comparison of Current Water Source Capacity vs. Future Demand Current Source Capacity vs. Future Demand Water Source Peak Day Capacity/Demand Average Yearly Capacity/Demand Stone Creek Well 0.50 MGD (350 gpm) MG (565 Ac-ft) Weber Basin WCD 1.44 MGD (1000 gpm) MG (750 Ac-ft) Total Current Capacity 1.94 MGD (1350 gpm) MG (1,315 Ac-ft) Total Future Demand (from Table 5-2) Additional Capacity Needed to Meet Future Demand 3.05 MGD (2118 gpm) MG (1,604 Ac-ft) 1.11 MGD (768 gpm) MG (289 Ac-ft) 5.3 Water Storage The future water storage requirement is calculated by multiplying the projected number of new ERCs as presented in Table 5-1, by 400 gallons per ERC, which is the minimum storage volume required by the State of Utah Drinking Water Rules. The projected storage requirements at built-out conditions are presented in Table 5-4. The future storage requirement is greater than the current storage volume; therefore additional storage will be necessary in order to maintain the existing level of service. The City expects to construct the additional storage reservoir at the same site as the 1.5 MG reservoir. 12

16 Table 5-4: Future Storage Requirements Future Storage Requirements Type of Storage Equalization Storage Fire Suppression Storage Emergency Storage Total Required Storage Current Storage Storage Volume 1.53 MG 0.72 MG 0.76 MG 3.01 MG 2.50 MG 5.4 Water Distribution The scope of this water distribution analysis did not include the creation of a system wide distribution model. Specific flow and pipe analyses were performed using hydraulic equations that are acceptable by industry standards and commonly used in water system design and analysis. Sample calculations can be found in the Appendix of this report. The system wide analysis was based on sound engineering judgment and actual knowledge of the operating system. In order to provide adequate water service to the developing areas without affecting the level of service to existing businesses and residents it will be necessary to increase the flow capacity of several of the major transmission lines in the City s water distribution system. Flow capacity is increased by replacing existing transmission lines with larger diameter pipe. The replacement pipe sizes were designed to handle the worst case scenario (fire flow). 5.5 Conclusion In order to maintain the current level of service under the projected built-out conditions, several improvements to the City s water system will be necessary. These improvements include increasing the water source capacity, increasing the storage capacity, replacing and upsizing existing water transmission lines, and installing new water transmission lines. Descriptions of the specific locations and sizes of the improvements will be discussed in the following chapter. 13

17 6.0 RECOMMENDATIONS 6.1 Water Capital Improvement Plan It is recommended that the water system improvement projects identified in this chapter be added to the West Bountiful Capital Improvement Program. Each of the projects is briefly described in this chapter and a summary of the projects is presented in Table 6-1. Each project is categorized by the type of project (source, storage, distribution or combination) and by the priority level of the project (high, medium, low). Figure 6.1 shows the location of each of the projects, where possible. Figure 6.1: Map Showing Water Projects 14

18 Table 6-1: Summary Matrix of Projects Number of Projects by Type Priority Source Storage Distribution Combination Total High Medium Low Total Project W-01A High Priority, Distribution Location: 500 South 800 West to I-15 Description: Replace 12 inch cast iron pipe with 12 inch PVC pipe Need: The current pipe is approximately 60 years old and does not have the capacity to meet growth related demands. Planned Construction Year: 2009 Special Considerations: This project is deemed high priority because the Utah Department of Transportation (UDOT) is currently designing roadway improvements for 500 South which are to be completed during the summer of This waterline project needs to be completed prior to the roadway improvements. This project will include a Union Pacific Railroad crossing, I-15 crossing, and will require a major traffic control effort. Project W-01B Medium Priority, Distribution Location: 500 South from I-15 to 500 West Description: Replace 12 inch cast iron pipe with 12 inch PVC pipe Need: The current pipe is approximately 60 years old and does not have the capacity to meet growth related demands. Planned Construction Year: 2009 Special Considerations: This project is deemed high priority because the Utah Department of Transportation (UDOT) is currently designing roadway improvements for 500 South which are to be completed during the summer of This waterline project needs to be completed prior to the roadway improvements. This project will include a Union Pacific Railroad crossing, I-15 crossing, and will require a major traffic control effort. 15

19 Project W-02A High Priority, Distribution Location: Porter Lane from 880 West to 1100 West Description: Install new 10 inch PVC waterline Need: To supply culinary water to this portion of the city that has been recently annexed. Current residents have relied on wells which have begun to dry up within the past several years. Planned Construction Year: 2009 Special Considerations: There are several high pressure gas lines that will be crossed by this new waterline. Project W-02B Medium Priority, Distribution Location: 1100 West from Porter Lane to 1850 West Description: Install new 10 inch PVC waterline Need: To supply culinary water to this portion of the city that has been recently annexed. Current residents have relied on wells which have begun to dry up within the past several years. Planned Construction Year: 2009 Special Considerations: There are several high pressure gas lines that will be crossed by this new waterline. Project W-03 High Priority, Distribution Location: 400 North from 1100 West to 500 West Description: Replace 8 inch cast iron pipe with 12 inch PVC pipe Need: The current pipe is approximately 60 years old and does not have the capacity to meet growth related demands. Planned Construction Year: 2010 Special Considerations: This project will include a Union Pacific Railroad crossing, I- 15 crossing, and Utah Transit Authority (UTA) crossing. Project W-04 High Priority, Distribution Location: 1000 North from 800 West to 550 West Description: Replace 8 inch cast iron pipe with 12 inch PVC pipe Need: The current pipe is approximately 60 years old and does not have the capacity to meet growth related demands. This pipe has required several repairs in recent years. Planned Construction Year:

20 Special Considerations: This project should be coordinated and completed prior to the replacement of 1000 North. Project W-05 Medium Priority, Distribution Location:1100 West from 400 North to 1070 North Description: Replace 8 inch cast iron pipe with 12 inch PVC pipe Need: The current pipe is approximately 60 years old and does not have the capacity to meet growth related demands. Planned Construction Year: 2012 Special Considerations: Several active and abandoned gas lines are crossed with this project which will require coordination with the owners of these lines. Project W-06A Medium Priority, Source Location: Not determined yet Description: Conduct study and drill new production well (Phase I) Need: The current water supply which includes water supplied by Weber Basin Water Conservancy District and the existing well is not sufficient for projected growth demands. A new well is required to meet these demands. Planned Construction Year:2013 Special Considerations: City will need to acquire sufficient water rights to operate this well Project W-06A Medium Priority, Source Location: Not yet determined Description: Construct well house, obtain operating permit and place well into use (Phase II) Need: The current water supply which includes water supplied by Weber Basin Water Conservancy District and the existing well is not sufficient for projected growth demands. A new well is required to meet these demands. Planned Construction Year: 2015 Special Considerations: This is the second phase of the well project. Project W-07 Medium Priority, Distribution Location: 800 West from 400 North to 1000 North Description: Replace 10 inch cast iron pipe with new 12 inch PVC pipe Need: The current pipe is approximately 60 years old and does not have the capacity to meet growth related demands. 17

21 Planned Construction Year:2014 Special Considerations: This project is located in the West Bountiful Historic District and should be coordinated with road improvement projects that are planned for this area. Project W-08 Medium Priority, Distribution Location: 800 West from 1000 North to Pages Lane Description: Replace 8 inch cast iron pipe with 12 inch PVC pipe Need: The current pipe is approximately 60 years old and does not have the capacity to meet growth related demands. Planned Construction Year: 2016 Special Considerations: None Project W-09 Medium Priority, Distribution Location: 800 West from Pages Lane to Porter Lane Description: Replace 8 inch cast iron pipe with 10 inch PVC pipe Need: The current pipe is approximately 60 years old and does not have the capacity to meet growth related demands. Planned Construction Year: 2018 Special Considerations: This project will cross the Deuell-Stone-Barton (DSB) canal. Project W-10 Medium Priority, Distribution Location: Pages Lane from 800 West to 550 West Description: Replace 8 inch cast iron pipe with 10 inch PVC pipe Need: The current pipe is approximately 60 years old and does not have the capacity to meet growth related demands. Planned Construction Year: 2019 Special Considerations: None Project W-11 Medium Priority, Distribution Location: East of I-15 behind Shopko from 500 South to Costco at 50 North Description: Replace 8 inch PVC pipe with 12 inch PVC pipe Need: Strengthen fire suppression capacity due to redevelopment of the area Planned Construction Year: 2020 Special Considerations: None 18

22 Project W-12 Low Priority, Distribution Location: Future Legacy frontage road from 1200 North to 400 North Description: Install new 12 inch PVC pipe Need: To create a loop in the water system in the southwest portion of the city Planned Construction Year: 2021 Special Considerations: This project does not need to be completed until development extends to this portion of the City. Project W-13 Low Priority, Distribution Location: New commercial district at Legacy Parkway and 500 South Description: Install new 12 inch PVC pipe and fire hydrants Need: Supply drinking water and fire suppression to the new development Planned Construction Year: 2023 Special Considerations: None Project W-14 Low Priority, Distribution Location: Future 400 North from 1450 West to Legacy Parkway Description: Install new 12 inch PVC pipe, fire hydrants, and connections Need: Supply drinking water and fire suppression to the new development Planned Construction Year: 2024 Special Considerations: None Project W-15 Low Priority, Distribution Location: Approximately 1450 West and 1070 North extending to 1200 North Description: Install new 8 inch PVC pipe, fire hydrants, and connections Need-Loop existing system and provide water to new development Planned Construction Year: 2025 Special Considerations: None Project W-16 Low Priority, Distribution Location: Pages Lane from 1000 West to future Legacy frontage road Description: Replace 6 inch PVC pipe with new 12 inch PVC pipe Need: The current pipe does not have the capacity to meet growth related demands 19

23 Planned Construction Year: 2026 Special Considerations: None Project W-17 Low Priority, Distribution Location: Future Legacy frontage road from 1200 North to Pages Lane Description: Install new 12 inch PVC pipe, fire hydrants, and service connections Need: Loop existing system and provide water to new development Planned Construction Year: 2027 Special Considerations: None Project W-18A Medium Priority, Distribution Location: 500 South from Main Street to 300 East Description: Replace 12 inch transite pipe with new 16 inch PVC pipe Need: The transite pipe contains asbestos fibers that could pose a potential health risk and the current pipe does not have the capacity to meet growth related demands Planned Construction Year: 2017 Special Considerations: Removal and disposal of existing pipe includes contact with asbestos lined pipe. Project W-18B Medium Priority, Distribution Location: 500 South from 500 West to Main Street Description: Install parallel 12 inch PVC pipe Need: The existing pipe does not have the capacity to meet growth related demands Planned Construction Year: 2017 Special Considerations: None Project W-19 Low Priority, Storage Location: Not determined yet Description: Construct new 1.0 MG storage reservoir and connect to water system Need: Required to satisfy the State of Utah Drinking Water Rules for water storage based on development projections. Planned Construction Year: 2022 Special Considerations: Property acquisition should be considered well in advance of the expected completion date for this project 20

24 Project W-20 Low Priority, Distribution Location: 800 West from 500 South to 400 North Description: Replace 12 inch cast iron pipe with new 12 inch PVC pipe Need: The current pipe is approximately 60 years old and the existing 800 West alignment of the waterline is being considered for abandonment Planned Construction Year: 2028 Special Considerations: None Project W-21 High Priority, Combination Location: Not Applicable Description: Prepare Capital Facilities Plan Need: To determine new Impact Fee rates and identify needed projects Planned Construction Year: 2008 Special Considerations: None Project W-22 High Priority, Combination Location: Not Applicable Description: Analyze and update water impact fees Need: Future development will place more demand on the water system Planned Construction Year: 2008 Special Considerations: None Project W-23 Medium Priority, Combination Location: Not Applicable Description: Update Capital Facilities Plan in 5 years Need: Record improvement projects that have been completed and identify new projects to maintain an acceptable level of service. Planned Construction Year: 2013 Special Considerations: Create a system-wide computer model to analyze the water system Project W-24 High Priority, Source Location: Not Applicable Description: Water right study 21

25 Need: Update water right proof of beneficial use and verify if existing water rights are sufficient for growth projections for the City Planned Construction Year: 2008 Special Considerations: The City s main water right has a proof due in the near future Project W-25 High Priority, Combination Location: Not Applicable Description: Water rate study Need: To determine if current rates will produce the funds needed to maintain and operate the water system as expands due to growth of the City Planned Construction Year: 2008 Special Considerations: None Project W-26 High Priority, Distribution Location: Various locations throughout City Description: Meter Replacement Program Need: Allocate funds over the next four $50,000 per year for meter replacements. Planned Construction Year: Special Considerations: None Project W-27 High Priority, Distribution Location: 900 West Description: 900 West Replace Saddles and Services and Re-route Waterline in 900 West Need: Saddles and services need to be replaced because corrosive soils have eaten away existing. A portion of the 900 West waterline runs behind a house and needs to be rerouted into the public right-of-way. Planned Construction Year: 2009 Special Considerations: None 22

26 6.2 Cost Estimate A comprehensive list of water system improvement projects, the estimated costs for the design and construction of the projects, and the approximate year that each project will be constructed has been prepared and can be found in the Appendix of this report. The total construction costs are divided into three components: Existing Deficiencies, System Improvements, Project Improvements. Existing Deficiency Costs are the portion of the costs necessary to repair existing problems or replace components of the current system. System Improvement Costs are the portion of the costs necessary to upgrade system components to meet future growth related demands, without improving the level of service. System improvement costs include the cost to upsize the infrastructure in order to meet system needs beyond the immediate project area. For example, in a new residential development, the developer would be required to pay for the installation of an 8 inch waterline to service the homes in the development. But, if there is a potential additional future growth to take place downstream of the new development, then the developer could be required to install a new 12 inch waterline instead of an 8 inch waterline. The project improvement costs would include the cost to install the standard 8 inch waterline. This portion of the cost will only benefit the new development. The system improvement costs will cover the additional expense to upgrade the waterline from 8 to 12 inches, which will benefit areas downstream of the immediate project area. Project Improvement Costs are costs which represent the developer s responsibility to install system components that comply with the City s standards and will only benefit the newly developed area. If the cost of a project is to be broken into existing deficiency and system improvement costs then, the total costs are divided into the two parts based on existing and future flow capacity. For example, a project that involves the replacement and upsizing of a waterline will have an existing deficiency component and a system improvement component. If the new pipe has a diameter of 12 inches and a flow capacity of 1,567 gpm, and the existing pipe has a diameter of 8 inches and a flow capacity of 600 gpm, then the system improvement percentage is calculated by dividing the additional flow capacity by the new pipe total flow capacity, shown as follows: System Improvement % = _ 1567 = 62% If the cost of a project is to be broken down into project improvement and system improvement components then the project improvement costs are determined by calculating the cost of the improvements which will only benefit the specific development. Table 6-2 presents a summary of the improvement costs broken down into the three components: existing deficiency, system, project improvements. 23

27 Table 6-2: Summary of Project Costs Priority Number of Projects Existing Deficiency System Improvement Project Improvement Total High 10 $2,344,249 $1,754,810 $ 0 $4,099,059 Medium 12 $3,934,624 $5,336,054 $ 499,800 $9,770,478 Low 8 $1,424,611 $1,873,668 $2,068,824 $5,367,103 Total 30 $7,703,483 $8,964,532 $2,568,624 $19,236, Impact Fees It has been demonstrated in this report that a significant amount of development related growth is expected within West Bountiful City over the next few decades. In order to serve the future businesses and residents while maintaining the level of service to current residents it will be necessary to require developers pay a water impact fee. The impact fees will be determined by analyzing the total system improvement costs throughout the City. This analysis will be performed by Lewis Young Robertson and Burningham (LYRB), the City s financial analysis consultant. 24

28 7.0 REFERENCES 1. Cooper Roberts Simonsen Associates. West Bountiful General Plan 2007 Update. May Lewis Young Robertson & Burningham, Inc. West Bountiful City, Utah City-Wide Impact Fee Analysis. December State of Utah, Department of Natural Resources, Division of Drinking Water. State of Utah Drinking Water Rules, R , Minimum Sizing Requirements. 25

29 8.0 APPENDIX Sample Calculations Project List and Estimated Costs 26

30 Caldwell Richards Sorensen 8/18/2008 West Bountiful Capital Facilities Plan Projects - Water System Estimate of Probable Costs Item Existing System Project Construction Funding Improvement Description Quantity Unit Unit Cost Total Cost No. Deficiency Improvement Improvement Year Source(s) W-01A 500 S from 800 W to I-15 replace 12" cast iron with 12" PVC " PVC C-900 DR-14 Waterline 1650 LF $ $ 107, Laterals and Water Meters 6 EA $ 2, $ 16, Fire Hydrants 4 EA $ 6, $ 24, South Connection - 12" 1 LS $ 7, $ 7, West Connection - 12" 1 LS $ 15, $ 15, Trailer Park Connection-6" 1 LS $ 8, $ 8, Industrial Park Connection - 6" 1 LS $ 8, $ 8, Asphalt (Demolition and Restoration) SF $ 8.50 $ 112, Flowable Fill 367 CY $ $ 45, Bore beneath Union Pacific Railroad Tracks 200 LF $ $ 140, Bore beneath Mill Creek Canal 50 LF $ $ 35, Traffic Control 1 LS $ 75, $ 75, Professional Services 15% % $ 89, Mobilization and Demobilization 5% % $ 29, % 5% 0% 1.15 Contingency 20% % $ 118, $790,053 $41,582 $ Bond Subtotal= $ 831, W-01B 500 S from I-15 to 500 W replace 12" cast iron with 12" PVC " PVC C-900 DR-14 Waterline 600 LF $ $ 39, " PVC C-900 DR-14 Waterline 500 LF $ $ 37, Fire Hydrants 2 EA $ 6, $ 12, South Connection - 12"x12" 1 LS $ 7, $ 7, West Connection - 16"x12" 1 LS $ 15, $ 15, ShopKo Connection - 12"x16"x8" 1 LS $ 25, $ 25, Asphalt (Demolition and Restoration) 8800 SF $ 8.50 $ 74, Flowable Fill 244 CY $ $ 30, Bore beneath I LF $ $ 280, Traffic Control 1 LS $ 75, $ 75, Professional Services 15% % $ 89, Mobilization and Demobilization 5% % $ 29, % 5% 0% 50% UDOT 1.13 Contingency 20% % $ 119, $793,079 $41,741 $ % City Subtotal= $ 834, W-02A Porter Lane from 880 West to 1100 West New 10" PVC " PVC C-900 DR-14 Waterline 1100 LF $ $ 66, Laterals and Water Meters 7 EA $ 2, $ 18, Fire Hydrants 3 EA $ 6, $ 18, Isolation Valves 2 EA $ 1, $ 3, Porter Lane Connection - 10" 1 EA $ 7, $ 7, Asphalt (Demolition and Restoration) 4400 SF $ 8.50 $ 37, Traffic Control 1 LS $ 10, $ 10, Professional Services 15% % $ 24, Mobilization and Demobilization 5% % $ 8, % 0% 0% 2.10 Contingency 20% % $ 32, $225,120 $0 $ Bond Subtotal= $ 225, West Bountiful Improvements Cost Estimate_v4.xlsWater Page 1 of 7

31 Caldwell Richards Sorensen 8/18/2008 West Bountiful Capital Facilities Plan Projects - Water System Estimate of Probable Costs Item Existing System Project Construction Funding Improvement Description Quantity Unit Unit Cost Total Cost No. Deficiency Improvement Improvement Year Source(s) W-02B 1100 W from Porter Lane to 1850 West New 10" PVC " PVC C-900 DR-14 Waterline 2500 LF $ $ 150, Fire Hydrants 6 EA $ 6, $ 36, Isolation Valves 3 EA $ 1, $ 4, W Connection - 10" 1 EA $ 7, $ 7, Asphalt (Demolition and Restoration) SF $ 8.50 $ 170, Bore beneath Canal on 1100 West 60 LF $ $ 42, Traffic Control 1 LS $ 10, $ 10, Professional Services 15% % $ 63, Mobilization and Demobilization 5% % $ 21, % 15% 85% 2.10 Contingency 20% % $ 84, $0 $88,200 $499, Developer Subtotal= $ 588, W North from 1100 West to 500 West replace 8" cast iron with 12" PVC " PVC C-900 DR-14 Waterline 5450 LF $ $ 354, Laterals and Water Meters 40 EA $ 2, $ 108, Fire Hydrants 15 EA $ 6, $ 90, Valves and Fittings 1 LS $ 67, $ 67, Asphalt (Demolition and Restoration) SF $ 8.50 $ 249, Bore Beneath UTA tracks and I LF $ $ 385, Traffic Control 1 LS $ 100, $ 100, Utility Conflicts 1 LS $ 135, $ 135, Professional Services 15% % $ 223, Mobilization and Demobilization 5% % $ 74, % 62% 0% 3.11 Contingency 20% % $ 297, $792,462 $1,292,964 $ Bond Subtotal= $ 2,085, W North from 800 West to 550 West replace 8" cast iron with 12" PVC " PVC C-900 DR-14 Waterline 2000 LF $ $ 130, Laterals and Water Meters 15 EA $ 2, $ 40, Fire Hydrants 5 EA $ 6, $ 30, Valves and Fittings 1 LS $ 76, $ 76, Asphalt (Demolition and Restoration) SF $ 8.50 $ 102, Traffic Control 1 LS $ 19, $ 19, Professional Services 15% % $ 59, Mobilization and Demobilization 5% % $ 19, % 62% 0% 4.09 Contingency 20% % $ 79, $211,614 $345,264 $ Bond Subtotal= $ 556, W West from 400 North to 1070 North replace 8" cast iron with 12" PVC " PVC C-900 DR-14 Waterline 3850 LF $ $ 250, Laterals and Water Meters 35 EA $ 2, $ 94, Fire Hydrants 10 EA $ 6, $ 60, Connections 1 LS $ 70, $ 70, Asphalt (Demolition and Restoration) SF $ 8.50 $ 327, Traffic Control 1 LS $ 15, $ 15, Professional Services 15% % $ 122, Mobilization and Demobilization 5% % $ 40, % 62% 0% 5.09 Contingency 25% % $ 204, $450,167 $734,483 $ City Subtotal= $ 1,184, West Bountiful Improvements Cost Estimate_v4.xlsWater Page 2 of 7

32 Caldwell Richards Sorensen 8/18/2008 West Bountiful Capital Facilities Plan Projects - Water System Estimate of Probable Costs Item Existing System Project Construction Funding Improvement Description Quantity Unit Unit Cost Total Cost No. Deficiency Improvement Improvement Year Source(s) W-06A 6A.01 Drill New 500 gpm Culinary Production Well Well Siting Study 1 LS $ 25, $ 25, A.02 Drill Test Well 1 LS $ 200, $ 200, A.03 Drill Production Well 1 LS $ 1,000, $ 1,000, A.04 Regulatory Compliance 1 LS $ 30, $ 30, A.05 Professional Services 2.5% % $ 31, A.06 Mobilization and Demobilization 2.5% % $ 31, % 100% 0% 6A.07 Contingency 5% % $ 62, $0 $1,380,500 $ City Subtotal $ 1,380, W-06B 6B.01 Construct New Well House and Start up new Well Pump House 1 LS $ 850, $ 850, B.02 Operating Permit 1 LS $ 25, $ 25, B.03 Property Acquisition 1 AC $ 250, $ 250, B.04 Professional Services 2.5% % $ 28, B.05 Mobilization and Demobilization 2.5% % $ 28, % 100% 0% 2015 City 6B.06 Contingency 5% % $ 56, $0 $1,237,500 $0 Subtotal= $ 1,237, W West from 400 North to 1000 North replace 10" cast iron with 12" PVC " PVC C-900 DR-14 Waterline 2100 LF $ $ 136, Laterals and Water Meters 40 EA $ 2, $ 108, Fire Hydrants 6 EA $ 6, $ 36, Connections 1 LS $ 45, $ 45, Asphalt (Demolition and Restoration) SF $ 8.50 $ 178, Traffic Control 1 LS $ 19, $ 19, Professional Services 15% % $ 78, Mobilization and Demobilization 5% % $ 26, % 37% 0% 7.09 Contingency 25% % $ 130, $478,217 $280,858 $ City Subtotal= $ 759, W West from 1000 North to Pages Lane replace 8" cast iron with 12" PVC " PVC C-900 DR-14 Waterline 2550 LF $ $ 165, Laterals and Water Meters 29 EA $ 2, $ 78, Fire Hydrants 7 EA $ 6, $ 42, Connections 1 LS $ 54, $ 54, Asphalt (Demolition and Restoration) SF $ 8.50 $ 216, Traffic Control 1 LS $ 19, $ 19, Professional Services 15% % $ 86, Mobilization and Demobilization 5% % $ 14, % 62% 0% 8.09 Contingency 25% % $ 71, $284,234 $463,751 $ City Subtotal= $ 747, West Bountiful Improvements Cost Estimate_v4.xlsWater Page 3 of 7

33 Caldwell Richards Sorensen 8/18/2008 West Bountiful Capital Facilities Plan Projects - Water System Estimate of Probable Costs Item Existing System Project Construction Funding Improvement Description Quantity Unit Unit Cost Total Cost No. Deficiency Improvement Improvement Year Source(s) W West from Pages Lane to Porter Lane replace 8" cast iron with 10" PVC " PVC C-900 DR-14 Waterline 2400 LF $ $ 144, Laterals and Water Meters 23 EA $ 2, $ 62, Fire Hydrants 6 EA $ 6, $ 36, Connections 1 LS $ 36, $ 36, Asphalt (Demolition and Restoration) SF $ 8.50 $ 204, Traffic Control 1 LS $ 19, $ 19, Professional Services 15% % $ 75, Mobilization and Demobilization 5% % $ 25, % 46% 0% 9.09 Contingency 25% % $ 125, $392,361 $334,234 $ City Subtotal= $ 726, W-10 Pages Lane from 800 West to 550 West replace 8" cast iron with 10" PVC " PVC C-900 DR-14 Waterline 2450 LF $ $ 147, Laterals and Water Meters 31 EA $ 2, $ 83, Fire Hydrants 6 EA $ 6, $ 36, Connections 1 LS $ 59, $ 59, Asphalt (Demolition and Restoration) SF $ 8.50 $ 208, Traffic Control 1 LS $ 19, $ 19, Professional Services 15% % $ 82, Mobilization and Demobilization 5% % $ 27, % 0% 0% Contingency 25% % $ 138, $801,778 $0 $ City Subtotal= $ 801, W-11 Project Deleted Subtotal= W-12 Future Legacy frontage road from 1200 North to 400 North New 12" PVC " PVC C-900 DR-14 Waterline 3750 LF $ $ 243, Fire Hydrants 9 EA $ 6, $ 54, Connections 1 LS $ 13, $ 13, Professional Services 15% % $ 46, Mobilization and Demobilization 5% % $ 15, % 15% 85% Contingency 25% % $ 77, $0 $67,697 $383, Developer Subtotal= $ 451, W-13 New Commercial district at 500 South and Legacy New 12" PVC " PVC C-900 DR-14 Waterline 3550 LF $ $ 230, Fire Hydrants 9 EA $ 6, $ 54, Connections 1 LS $ 17, $ 17, Professional Services 15% % $ 45, Mobilization and Demobilization 5% % $ 15, % 0% 100% Contingency 25% % $ 75, $0 $0 $438, Developer Subtotal= $ 438, West Bountiful Improvements Cost Estimate_v4.xlsWater Page 4 of 7

34 Caldwell Richards Sorensen 8/18/2008 West Bountiful Capital Facilities Plan Projects - Water System Estimate of Probable Costs Item Existing System Project Construction Funding Improvement Description Quantity Unit Unit Cost Total Cost No. Deficiency Improvement Improvement Year Source(s) W-14 Future 400 North from 1450 West to Legacy New 10" PVC " PVC C-900 DR-14 Waterline 3100 LF $ $ 186, Fire Hydrants 8 EA $ 6, $ 48, Connections 1 LS $ 13, $ 13, Professional Services 15% % $ 37, Mobilization and Demobilization 5% % $ 12, % 0% 100% Contingency 25% % $ 61, $0 $0 $358, Developer Subtotal= $ 358, W-15 Approximately 1450 West and 1070 North Extend 8" to 1200 North " PVC C-900 DR-14 Waterline 850 LF $ $ 46, Fire Hydrants 3 EA $ 6, $ 18, Connections 1 LS $ 27, $ 27, Asphalt (Demolition and Restoration) 8500 SF $ 8.50 $ 72, Traffic Control 1 LS $ 19, $ 19, Professional Services 15% % $ 27, Mobilization and Demobilization 5% % $ 9, % 0% 100% Contingency 25% % $ 45, $0 $0 $265, Developer Subtotal= $ 265, W-16 Pages Lane from 1100 West to Legacy Frontage Road replace 6" PVC with 12" PVC " PVC C-900 DR-14 Waterline 750 LF $ $ 48, Fire Hydrants 3 EA $ 6, $ 18, Connections 1 LS $ 27, $ 27, Asphalt (Demolition and Restoration) 7500 SF $ 8.50 $ 63, Traffic Control 1 LS $ 10, $ 10, Professional Services 15% % $ 25, Mobilization and Demobilization 5% % $ 8, % 15% 85% Contingency 25% % $ 41, $0 $36,431 $206, Developer Subtotal= $ 242, W-17 Future Legacy frontage road from Pages Lane to 1200 North New 12" PVC " PVC C-900 DR-14 Waterline 4250 LF $ $ 276, Fire Hydrants 8 EA $ 6, $ 48, Connections 1 LS $ 13, $ 13, Professional Services 15% % $ 50, Mobilization and Demobilization 5% % $ 16, % 15% 85% Contingency 25% % $ 84, $0 $73,461 $416, Developer Subtotal= $ 489, W-18A 500 South from Main Street to 300 East replace 12" transite with 16" PVC " PVC C-900 DR-14 Waterline 1850 LF $ $ 138, Fire Hydrants 2 EA $ 6, $ 12, Connections and Valves 1 LS $ 40, $ 40, Asphalt (Demolition and Restoration) SF $ 8.50 $ 157, Traffic Control 1 LS $ 75, $ 75, Professional Services 15% % $ 63, Mobilization and Demobilization 5% % $ 21, % 50% 0% Contingency 25% % $ 105, $306,675 $306,675 $ City Subtotal= $ 613, West Bountiful Improvements Cost Estimate_v4.xlsWater Page 5 of 7