Culinary and Pressure Irrigation Water System. Capital Facilities Plan

Transcription

1 Culinary and Pressure Irrigation Water System Capital Facilities Plan September 2009 Prepared By: J-U-B ENGINEERS, Inc. 240 West Center St., Ste. 200 Orem, Utah (801)

2 SANTAQUIN CITY CULINARY AND PRESSURE IRRIGATION WATER SYSTEM CAPITAL FACILITIES PLAN AND ASSOCIATED IMPACT FEES TABLE OF CONTENTS PAGE 1.0 INTRODUCTION SCOPE OF REPORT FORMAT OF REPORT LEVEL OF SERVICE EXISTING WATER SYSTEM EXISTING WATER SOURCES EXISTING WATER STORAGE EXISTING DISTRIBUTION SYSTEM WATER SYSTEM IMPROVEMENTS WATER SOURCE IMPROVEMENTS WATER STORAGE IMPROVEMENTS WATER DISTRIBUTION IMPROVEMENTS IMPROVEMENT PROJECT SUMMARY REVENUE SOURCES Figures 1-9 APPENDICIES APPENDIX A - FIGURE V-5 ALLOCATION OF WATER SOURCES (Revised Sept 2007) CALCULATION OF CULINARY STORAGE CAPACITY REQUIREMENTS BY ZONE APPENDIX B PROJECT CALCULATIONS

3 Santaquin City Water Capital Facilities Plan 1.0 INTRODUCTION 1.1 SCOPE OF REPORT A capital facilities plan is an essential element in the development of any community experiencing significant growth. With a capital facilities plan, a community has a tool to guide infrastructure improvements. This water system capital facilities plan provides direction for future growth, and provides a plan for the construction of water improvements to serve the residents of Santaquin City. The goals of the capital improvement plan are listed below: Model the current water system infrastructure to serve the current connections. Model the future water system required to service the projected buildout connections based on the currently adopted General Plan. Determine the improvements needed current and future, to meet city growth projections. Estimate the cost of improvements required to serve future development. These costs can then be used to calculate the impact fees which will be assessed by the city. By establishing impact fees to pay for the capital facilities projects in this report it will provide a means for Santaquin to meet the demands of future growth. 1.2 FORMAT OF REPORT The report is sequenced as follows: 1. Determination of the current level of service (Section 2.0). 2. Description of the existing facilities and any existing excess capacity (Section 3.0). 3. Description of the improvements required to address current deficiencies and accommodate growth, including both the cost and the timeframe for construction (Sections 4.0 and 5.0). 4. Discussion of available funding sources (Section 6.0). 2.0 LEVEL OF SERVICE The accepted levels of service in Santaquin are based on the state standards for water delivery systems as set forth in the State of Utah drinking water rules Section R The accepted levels of service are as follows: J-U-B ENGINEERS, Inc. Page 1

4 Santaquin City Water Capital Facilities Plan Table 2.1: Culinary Use Accepted Level of Service Type Quantity Unit Source (Peak Day Demand) 800 gpd (gallons per day) per ERU Storage 400 gallons per ERU Fire Storage 120,000 gallons (minimum per isolated system, may be more where required by fire code) Emergency Storage 25% of total required storage Table 2.2: Outdoor Use Accepted Level of Service Type Quantity Unit Source 3.96 gpm (gallons per minute) per irrigated acre Storage 2848 gallons per irrigable acre The accepted levels of service for pressures in the culinary system is the state standard, which requires a minimum of 20 psi during fire flow, 30 psi during peak instantaneous demand, and 40 psi during peak day demand. The accepted level of service for pressure in the secondary system is a minimum of 35 psi during the peak day demand. No state standard exists for minimum pressure in a secondary system which does not provide fire suppression, so this minimum pressure has been determined by Santaquin City. 3.0 EXISTING WATER SYSTEM Santaquin has two separate water supply systems. The culinary water system primarily serves indoor demands, while the pressure irrigation system (or secondary system) serves outdoor demands. The culinary system only serves the outdoor demand in limited locations and circumstances. The existing facilities are discussed below organized into the type of facility: source, storage, or distribution. 3.1 EXISTING WATER SOURCES A listing of the capacities of existing water sources is provided in Table and below. Separate tables are provided for the culinary and secondary systems: Table 3.1.1: Existing Culinary Water Supply Sources Source Quantity (mgd) Springs 1.27 Cemetery Well 1.01 Center Street Well.81 East Side Well.46 Summit Ridge Well 1.66 Total Culinary Sources 5.20 J-U-B ENGINEERS, Inc. Page 2

5 Santaquin City Water Capital Facilities Plan Table 3.1.2: Existing Secondary Water Supply Sources Source Quantity (mgd) Summit Creek Irrigation Shares (500 Shares) 1.35 Secondary Total 1.35 The water supplied by the Summit Creek Irrigation Company is diverted from the irrigation company s pipeline in Summit Creek Canyon, and from two wells owned by the Summit Creek Irrigation Company. The table below compares the existing source capacity to the current required capacity, based on the current number of connections (currently 2014 ERU). The table also identifies any excess capacity in the system. The current demand is based on the current number of connections, and assumes ¼ acre of irrigated land per connection. Table 3.1.3: Existing Demands on Water Sources Vs. Capacity Type Capacity (mgd) Current Demand Difference (mgd) (mgd) Culinary Sources Secondary Sources Total Excess 2.07 Water from the culinary sources currently supplements the secondary system, making up for what looks like a deficiency in the table above. As more irrigation water rights are obtained, and when the CUP (Central Utah Project) is completed, which will provide another source of water, this supplementation will discontinue. Overall, the city currently has excess water source capacity. 3.2 EXISTING WATER STORAGE A listing of the current water storage tanks and reservoirs can be found below in Tables and Separate tables are provided for the culinary and secondary systems. Table shows the existing capacity, the current demand, and the corresponding surplus or deficiency for each culinary tank. The totals are then added together to find the overall system s excess capacity. The current culinary storage demand was determined using the existing number of connections in the zone, and the established level of service described previously. The quantity of required culinary storage includes fire demands and an additional 25% for emergency storage. The current irrigation storage requirements on the culinary tanks were determined using the existing quantity of irrigable acres in the zone, unless they are currently served by the secondary system. J-U-B ENGINEERS, Inc. Page 3

6 Santaquin City Water Capital Facilities Plan Table shows separate calculations for storage demands on the culinary tanks, either with or without the irrigation demands in the zone. This is because as soon as booster pumps are installed on the secondary system to bring secondary water to Upper Zone and Eastside Zone, the irrigation demands on these tanks will be eliminated, leaving only the culinary demands. Under normal conditions, each culinary tank supplies one or more zones, with each tank operating independent of the other existing tanks. During an emergency situation, the Eastside Zone Tank and Upper Zone Tank can supplement the Main Zone Tank, as needed. Because of this possible supplementation, the totals for existing storage and required storage for these individual tanks can be added together to find the system-wide surplus capacity, as is done in Table below. Due to development agreements, the Summit Ridge Upper Tank can only supply water to the Summit Ridge Development and is therefore broken out separately in Table There is currently only one storage reservoir for the secondary system, as shown below in Table The Summit Ridge Development is not considered separately in the secondary system as it is in the culinary system. The storage requirements for the secondary system were determined using the existing number of connections (2014 ERU), assuming a ¼ acre of land per connection, and the established level of service described previously. Table 3.2.1: Existing Culinary Water Storage System Tank Capacity (gal) Culinary Required (gal) Irrigation Required (gal) Surplus without Irrigation (gal) Surplus with Irrigation (gal) Main City Eastside Zone 1,000, , , , ,612 System Tank Upper Zone Tank 1,000, , , , ,313 Main Zone Tank 500, , , ,000 Main City System Totals: 2,500,000 1,560,000 1,323, , ,701 Summit Ridge System Summit Ridge Upper Tank 1,200, , , , ,896 Summit Ridge System Totals: 1,200, , , , ,896 Table 3.2.2: Existing Secondary Water Storage Reservoir Capacity (gal) Required (gal) Difference (gal) Ahlin Pond 13,034,000 5,735,872 7,298,128 Totals: 5,735,872 7,298,128 As can be seen above, when including the current irrigation demands on the culinary tanks in the Main City System, the overall system is deficient, but if J-U-B ENGINEERS, Inc. Page 4

7 Santaquin City Water Capital Facilities Plan the irrigation demands are not included, the overall system has adequate storage. When booster pumps are installed on the secondary system the irrigation demands on the culinary tanks will be eliminated, resulting in a culinary system which has surplus capacity. The Summit Ridge culinary system has adequate storage to meet current demands in the Summit Ridge Development in either situation. The secondary system has excess capacity since the Ahlin Pond was designed to serve the future needs of the city. 3.3 EXISTING DISTRIBUTION SYSTEM The existing distribution systems were modeled and evaluated to determine whether or not the existing systems met the established levels of service for pressure when in full operation. In the culinary system some low pressures were identified along 4 th south which will be corrected as part of one of the projects listed in Section 5.0 of this report (Project 2a). There also exists some inefficiencies in the system which result in higher operating costs which must be addressed. These inefficiencies are discussed further in section 4.1. In the secondary system, there are no existing deficiencies, but several pipelines have been oversized to feed future development. Impact fees will be used to pay back these oversized lines. Figures 1 and 2 show the extents of the existing distribution systems. 4.0 WATER SYSTEM IMPROVEMENTS In order to meet the demands of future growth, the capacity of the system must be enhanced. The growth projections for Santaquin used in this study are 6% growth per year until 2013, then a 4% growth per year until 2029 and then a 3% growth per year. Growth projections predict that Santaquin will reach build-out in The yearly increase in irrigable acres was created by the addition of 1/4 acre of irrigable land with each new connection. Growth projections can be seen in Figure V-5 in Appendix A. A summary of growth in terms of Acres and Equivalent Residential Units (ERU) is shown below: J-U-B ENGINEERS, Inc. Page 5

8 Santaquin City Water Capital Facilities Plan Table 4.0.1: Growth Projections Summary Land Use Total Acres Build-out ERU"s Current ERU's Agriculture Business park Commercial Low Density Housing Medium Density Housing Medium-High Density Housing Open Space Public Facilities Ranchettes Transit Oriented Development Total The existing systems cannot support the increase in connections as shown above at the accepted level of service. Enhancements will need to be made to water sources, storage, and the distribution systems in order to provide for the demands of the expanding population. A more detailed description is given below for each portion of the system: water sources, water storage, and the distribution systems. 4.1 WATER SOURCE IMPROVEMENTS Water source capacity must be increased to meet the growing need of the culinary and pressure irrigation systems. A summary of the needs is provided below in Table For more detailed information on the timing of allocation of water sources see Figure V-5 in Appendix A. Table 4.1.1: Increase in Water Source Demand Type Current Capacity (mgd) Build-out ERU Build-out Demand (mgd) Required Increase (mgd) Culinary , Secondary , As growth occurs, land developers will be required to provide water sufficient for their developments, both culinary and irrigation. The Central Utah Project (CUP), when completed, will provide a new resource for pressure irrigation water. The quantity of water sources must be kept well above the demands so if a pump failure occurs there will still be sufficient water to supply the city s needs. As soon as possible a new well will need to be drilled, to provide a standby supply for when the Summit Creek Well is out of service. The existing Summit Ridge pumping facility should be upgraded to increase its capacity to the capacity of the well, probably about 3,000 gpm. A new well should also be drilled in the same area of similar capacity. J-U-B ENGINEERS, Inc. Page 6

9 Santaquin City Water Capital Facilities Plan System Pumps in the lower pressure zones currently pump all of the water to higher pressure zones, only to have a large portion of the water released back into the lower zones through pressure reducing valves. This is very inefficient. Considerable savings will be realized if water is pumped only as high as the system needs. To correct this it will be necessary to reconfigure the pumps and piping to allow the pumps to pump into their own zone. Booster pumps should then be installed to pump to the upper zones only when necessary, and the pressure reducing stations from the upper zones to the lower zones will not be used, except in emergency. These improvement projects are listed in more detail in Section WATER STORAGE IMPROVEMENTS New tanks and reservoirs must be installed to accommodate the increased storage requirements from growth. A summary of the needs is provided below in Table Table 4.2.1: Increase in Water Storage Demand Current Capacity (gal) Build-out Demand (gal) Fire Demand (gal) Emergency Demand (25%) (gal) Total Demand (gal) Required Increase (gal) Culinary 3,700,000 9,206,672 3,060,000 2,301,668 14,568,340 10,868,340 Secondary 13,034,000 20,608,128 20,608,128 7,574,128 *Culinary Demand values come from the table Calculation of Culinary Storage Capacity Requirements by Zone in Appendix A. New storage facilities will be located to provide for adequate pressure and flow throughout the city. The exact locations of the storage tanks will be determined through the computer model and the layout of the land. See Calculation of Culinary Storage Capacity Requirements by Zone in Appendix A, for a storage demand summary. Also, booster pumps will need to be installed to supply secondary water to the Upper Zone and Eastside Zone since the secondary systems in these areas are currently being fed by the culinary tanks (see Projects 6h and 6k in Section 5.0). These tanks currently have insufficient capacity to serve both the culinary and secondary systems (see Table 3.2.1), but will have sufficient capacity once the irrigation demands are eliminated. The improvement projects are listed in more detail in Section WATER DISTRIBUTION IMPROVEMENTS The culinary and secondary distribution systems were analyzed using the computer models in order to identify locations where the demands required by new growth would require upsizing of pipes. Developers are expected to install J-U-B ENGINEERS, Inc. Page 7

10 Santaquin City Water Capital Facilities Plan up to 8 pipe for the culinary system, or 6 pipe on the secondary system as part of their development. If a pipe must exceed these sizes in order to serve future development, the additional cost beyond that of installing the 8 or 6 pipe will be covered by the city using funds generated from impact fees. The pipes which must be upsized are listed in Section 5.0, and shown in Figures 7 and 9. A pressure irrigation pipeline and a culinary pipeline must be constructed between the Main Zone and the West Zone to tie these two systems together. This will provide water from the primary source of supply to the entire system, and provide more reliable service to the users. More detail on these projects is given in Section 5.0, and they can be seen in Figures 6 and IMPROVEMENT PROJECTS SUMMARY The improvement projects necessary to accommodate future growth, and to resolve existing deficiencies and inefficiencies are listed in the tables in this section. Each project listing contains commentary on why the project must be constructed, a description of the project, probable cost, the timeline for construction, and what the funding source will be. Particular attention is given to those projects which have already been constructed, or will be within the next 10 years, since the cost of these projects can be used to determine impact fees. Maps of the projects can be seen in Figures 6 through 9. The numbering on these maps match the numbering below. PROJECT DESCRIPTION PROBABLE COST 1 PROJECT: IMPROVE THE CULINARY WATER SUPPLY TO THE EAST SIDE ZONE See Figure 6 Commentary: The existing East Side Well does not have capacity to provide the increasing demand in the Upper East Side Zone. Recommendations: When Within 10 Cost Years? a Construct a Booster Pump Station to deliver water Now Yes $ 228,350 as needed from the Upper Zone to the East Side Zone. This will supplement the water provided by the East Side Well. Total Probable Cost: $ 228,350 Funding: Impact Fees 2 PROJECT: RE-ALIGN PRESSURE ZONE BOUNDARIES See Figure 6 Commentary: There is a section of the City in the area South of 400 South and Center to 300 West where the pressure in the Culinary System is too low. Recommendations: When Within Ten Years? Cost a Construct the pipeline interconnections and extensions that will bring the low pressure area out of the main pressure zone and into the upper pressure zone. Already Constructed NA $ 182, J-U-B ENGINEERS, Inc. Page 8

11 Santaquin City Water Capital Facilities Plan Total Probable Cost: $ 182, Funding: Impact Fees, Other City Funds 3 PROJECT: IMPROVE THE OVERALL CITY WATER SUPPLY SYSTEM See Figure 6 Commentary: The rapid recent growth of the City and the unprecedented pending population increases mandate that steps be taken now to improve the City water supply. a water demands will exceed the capacity of all existing City water sources, including the City owned Summit Creek Irrigation Co. shares. There is no standby supply in case a well is out of service. b. Much of the water used in the Santaquin system is pumped from the wells to upper pressure zones and released back to the lower zones through pressure reducing valves. Considerable savings will be realized, especially as the City grows, if water is pumped only as high in the system as is needed. Recommendations: The solutions are interrelated. All of the following improvements need to be accomplished concurrently. a Upgrade and reconfigure the SR Well for increased capacity and delivery to the Main Zone. b Construct a new deep Well on the West Side, including a Pumping Facility and building c Construct a 5 mg Culinary Water Storage tank on the West Side to serve the Main Zone. d Construct a culinary Booster Pump Facility from the Main Zone to the SR Upper Zone. e Construct a 16-inch Culinary Water Pipeline from the SR Wells to the main City. When Within 10 Years? Already Constructed Cost NA $ 256, As soon as money is available No $ 1,130,000 Now Yes $ 2,950,100 Now Yes $ 620,000 Already Constructed NA $ 667, Total Probable Cost: $ 5,623, Funding: Impact Fees/$200,000 CDBG Grant for Project 3a 4 PROJECT: PROVIDE PRESSURE IRRIGATION FACILITIES FOR GROWTH ON THE WEST SIDE- See Figure 8 Commentary: The following irrigation facilities are required to provide separation of the pressure irrigation water from the culinary water in the service areas west of the main city. These facilities should be constructed as soon as funding can be made available, but must be in place before the new developments can be served (including Ekins) and before CUP Aqueduct water can be used. Recommendation: When Within 10 Cost Years? a Construct a 40 acre foot Pond at the same elevation as the Ahlin Pond on the west side As Development Occurs Yes $ 1,468,000 b Construct a Booster Pump Facility to deliver water from the Main Zone to the SR Upper Zone. As Development Occurs No $ 333,000 J-U-B ENGINEERS, Inc. Page 9

12 Santaquin City Water Capital Facilities Plan c Construct a 1 mg PI Tank at Summit Ridge to serve the SR Upper (large) Zone d Construct a 24-inch PI Pipeline to deliver water between the East and West areas of the City and to connect the Ahlin Pond and the new West Side PI Pond. As Development Occurs As development occurs No $ 1,170,000 Yes $ 3,300,000 Total Probable Cost: $ 6,271,000 Funding: Impact Fees 5 PROJECT: CONNECT TO THE CUP AQUEDUCT AT TWO LOCATIONS See Figure 8 Commentary: One connection to the CUP Aqueduct will be made where the Pressure Irrigation transmission line intersects the location of the aqueduct near the Summit Ridge Well. Water from this turnout will be delivered to the two Pressure Irrigation Ponds that serve the Main Pressure Zone. A second connection will be made at a location to be determined in the Northern part of the City to deliver water to the North Pressure Zones. Recommendation: When Within 10 Cost Years? a Construct a connection to the CUP Aqueduct to serve the Main Zone. b Construct a connection to the CUP Aqueduct to serve the North Zone. When CUP aqueduct is completed When CUP aqueduct is completed No $ 315,200 No $ 298,600 Total Probable Cost: $ 613,800 Funding: Impact Fees 6 PROJECT: NEW WATER IMPROVEMENTS- See Figure 8 Commentary: The following water improvements will be required within the timeframes listed below. Recommendation: When Within 10 Years? a Construct a new 3 mg Culinary Water Tank at the same location and elevation as the existing Culinary Main Zone Tank. b Construct a 0.5 mg culinary water tank to serve culinary and pressure irrigation demands for the Upper East Side Zone. Separate Pressure Irrigation service will not be provided in this zone. c Construct a Booster Pump Facility from the East Side Zone to the Upper East Side Zone. d Construct a Booster Pump Facility from the Main Zone to the Upper Zone. e Upgrade and reconfigure the Cemetery Well to deliver water directly into the Main Zone. f Construct a pressure irrigation pipeline from Summit Creek Irrigation main line to Hanson Pond. g Construct a pressure irrigation tank to serve the East Side Zone As required by growth As required by growth As required by growth As required by growth As required by growth As required by growth As required by growth Cost No $ 2,984,000 No $ 771,000 Yes $ 581,600 Yes $ 432,500 Yes $ 181,600 No $ 651,000 Yes $ 600,000 J-U-B ENGINEERS, Inc. Page 10

13 Santaquin City Water Capital Facilities Plan h Construct a Pressure Irrigation Booster Pump Facility from the Upper Zone to the East Side Zone i Construct Pressure Reducing Valve Stations (PRV) for Culinary System (Eleven Total) & Pressure Irrigation Systems (Eleven Total) j Construct Pressure Irrigation Pond to serve Upper Zone (Hanson Property) k Construct Booster Pump Pressure Irrigation Main Zone to Upper Zone As soon as money is available As required by growth Yes $ 476,100 No $ 907,500 As required by growth Yes $ 834,100 As soon as Yes $ 388,400 money is available Total Probable Cost: $ 8,807,800 Funding: Impact Fees, Other City Funds 7 PROJECT: CULINARY WATER PIPELINE UP-SIZING See Figure 7 Commentary: When the following pipelines are constructed as part of future city growth and development the estimated cost for City participation with impact fee funding is shown in the column headed "Impact Fee Amount". Recommendation: Pipeline sizes should be required by the City as indicated below when these pipelines are constructed. Item Pipe Built Within Pipe Length Dia 10 Years? Impact Fee Amount Total Cost 7A Yes $ 6, $ 23, B Yes $ 24, $ 67, C 10 7,621 No $ 302, $ 653, D 10 13,095 No $ 210, $ 814, E 10 3,032 Yes $ 54, $ 193, F 10 4,262 Yes $ 34, $ 230, G No $ 15, $ 60, H 10 1,931 Yes $ 31, $ 120, Total Probable Cost: $ 678, $ 2,163, When: To be constructed by Developers. Funding; Impact Fees J-U-B ENGINEERS, Inc. Page 11

14 Santaquin City Water Capital Facilities Plan 8 PROJECT: PRESSURE IRRIGATION PIPELINE UP-SIZING See Figure 9 Commentary: When the following pipelines are constructed as part of future city growth and development the estimated cost for City participation with impact fee funding is shown in the column headed "Impact Fee Amount". Recommendation: Pipeline sizes should be required by the City as indicated below when these pipelines are constructed. Item Pipe Dia Pipe Length Built Within 10 Years? Impact Fee Amount Total Cost 8a 16 13,310 No $ 521, $ 849, aa Yes $ 3, $ 21, ab Yes $ 8, $ 22, ac 8 3,231 No $ 17, $ 96, b 10 2,048 No $ 31, $ 81, c 10 7,263 No $110, $ 290, d 10 8,995 No $137, $ 359, e 10 6,230 No $ 95, $ 248, f Yes $ 14, $ 44, ,954 Yes $ 57, $ 221, g Yes $ 18, $ 47, ,727 Yes $ 27, $ 95, Yes $ 3, $ 32, h 10 1,191 Yes $ 12, $ 59, i 12 2,300 Yes $ 49, $ 127, j 10 1,508 Yes $ 24, $ 74, k 10 4,647 Yes $ 74, $ 231, Yes $ 12, $ 32, l 10 1,121 Yes $ 17, $ 44, m 16 3,834 Yes $150, $ 244, n 10 1,801 Yes $ 28, $ 89, o 12 6,120 Yes $ 125, $ 276, p 10 1,217 Yes $ 18, $ 48, q 16 10,422 Yes $430, $ 781, r 8 2,554 Yes $ 14, $ 100, ,321 Yes $ 21, $ 65, ,392 Yes $ 140, $ 254, ,039 Yes $ 79, $ 302, ,384 Yes $ 410, $ 558, Yes $ 32, $ 52, Yes $ 43, $ 77, s No $ 15, $ 33, t Yes $ 34, $ 56, u 8 2,092 Yes $ 11, $ 62, v 8 2,449 Yes $ 12, $ 73, w 8 3,584 Yes $ 20, $ 140, x Yes $ 3, $ 25, y 8 2,125 No $ 11, $ 63, z 8 1,551 Yes $ 8, $ 46, Total Probable Cost: $ 2,851, $ 6,337, When: To be constructed by Developers. Funding; Impact Fees J-U-B ENGINEERS, Inc. Page 12

15 Santaquin City Water Capital Facilities Plan 9 PROJECT: PRESSURE IRRIGATION FACILITIES UP SIZED FOR GROWTH Commentary: The following facilities were sized for build out condition. The percent paid by impact fees was calculated by the number of build out connections each facility served divided by the number of existing connections served. Recommendation: Collect impact fees to pay back for construction due to growth. Pressure Irrigation Facilities built by the project to be partly reimbursed by impact fees Percent to be paid by Impact fees Item Description Full Amount Impact fee amount Main Zone Irrigation Pond 9a (Ahlin Pond) $1,220,468 85% $ 1,037,398 9b Summit Creek Well Booster Station $ 401,903 85% $ 341,618 Total Probable cost: $2,956,567 $ 1,379, PROJECT: Summit Ridge Development Impact Fee Reimbursement Commentary: The following facilities were sized to serve the Summit Ridge Development Recommendation: Collect impact fees to pay back for construction due to growth. Item Description Eligible Impact fee amount Up-Sized Pipeline, Well, 1 Million Gallon Tank $ 2,830, Revenue Sources Section 201 (3) of the Act requires the City to generally consider all revenue sources, including impact fees, available to finance the anticipated impact to the water system. By doing so, the City ensures fair and equitable treatment among users and concludes whether impact fees are the most appropriate method to fund the growth. The following revenue sources are available to the City to pay for new infrastructure: User Charges The City collects user fees for water services. User fees pay for water the City purchases from various sources, as well as the value of water created by the City s own water sources. User fees also pay for the maintenance and operation expenses of the City s water system. Grants and donations The City obtained a $5M grant for water conservation from the Central Utah Project for construction of the existing pressure irrigation system. It is probable that they may get additional grants for future projects. Special Improvement Districts and Special Assessment Bonds This method of financing growth is acceptable and allocates the cost of the new development to the new development. However, special improvement districts can be expensive to establish and complicated to administer, especially if a large development J-U-B ENGINEERS, Inc. Page 13

16 Santaquin City Water Capital Facilities Plan is being considered. Moreover, the special assessments may not accurately reflect the true cost of the facilities. General Obligation Bonds, Sales Tax Revenue Bonds, and Electric Revenue Bonds The City may elect to issue bonds to maintain a steady flow of funds to pay for needed facilities. The City has issued bonds in the past, and may determine that bonds are a suitable mechanism for funding future water system facilities. The City may use the revenues from impact fees to pay debt service on bonds. In addition, the City may use impact fees to pay for costs of issuance on future bond issues. Bonds may be issued in addition to collecting impact fees. Impact Fees This source is a common method for funding new infrastructure because it is imposed upon new growth. The detailed analysis required to impose impact fees accurately allocates the true impact of a system or facility to those creating the impact. Those creating the most impact, therefore, pay more. The speculative nature of these revenues, and their elasticity, however, make cash flows from impact fees unpredictable. The City may, on a case by case basis, work directly with a developer to adjust the standard impact fee to respond to unusual circumstances and ensure that impact fees are imposed fairly. The City may also, on a case by case basis, adjust the amount of the fee based upon studies and data submitted by a developer. Impact Fee Credit The Act allows a credit against impact fees for any dedication of land for, improvement to, or new construction of, any system improvements provided by the developer if the facilities are identified in the 2008 Plan and required contractually or otherwise by the City as a condition of development approval. The improvements do not need to be made in the proposed development. This impact fee analysis does not contemplate a credit owed and any credits given in the future would be agreed to between the developer and the City on a case by case basis as they arise. J-U-B ENGINEERS, Inc. Page 14

17 Legend Study Area Parcels Future Tank Existing Tank Future Pumps Future Well Existing Well Future PRV Station Future Pipelines Existing Pipelines Figure 1 Santaquin City Water System Culinary Water System

18 Legend Study Area Parcels Future Pipelines Existing Pipelines Future Pump Existing Pump Existing Well Future Pond Existing Pond Future Tank Figure 2 Santaquin City Water System Pressure Irrigation Water System

19 Natural Open Space Ranchettes Ranchettes Farm land Commercial Commercial Business Park/College Campus Natural Open Space Farm landmedium Density Housing Low Density Housing Open Space Ranchettes Farm land Medium Density Housing Commercial Business Park Public Facility Public Facility CBD Legend Open Space Natural Open Space Medium Density Housing Open Space Medium Density Housing Study Area Parcels Commercial - Agricutlure Farm land Medium Density Housing Natural Open Space city boundary Public FacilityOpen Space Freeway Low Density Housing Low Density Housing Regional Commercial Low Density Housing Natural Open Space TOD Commercial Natural Open Space Figure 3 Santaquin City Water System Land Use Areas

20 North Zone 3 North Zone 2 North Zone 1 East Zone North Zone 1 East Zone West Zone 2 West Zone 1 Main Zone West Zone 1 Main Zone East Zone Main Zone East Zone Upper Zone Upper East Zone 1 Legend Uppper East Zone 2 Study Area Higher Summit Ridge Zone Summit Ridge Zone Upper East Zone 3 Parcels Figure 4 Santaquin City Water System Culinary Pressure Zones

21 North Zone 3 North Zone 1 & 2 Upper Zone East Zone North Zone 1 & 2 Upper Zone West Zone 2 West Zone 1 West Zone 1 Main Zone Main Zone Upper East Zone 1 Legend Study Area Main Zone Parcels Summit Ridge Zone Upper Zone East Zone Upper East Zone 1 Uppper East Zone 2 Upper East Zone 3 Higher Summit Ridge Zone Summit Ridge Zone East Zone Figure 5 Santaquin City Water System Pressure Irrigation Pressure Zones

22 Legend Study Area 1a Study Area Parcels 3a 3e 2a Pipelines Project # 2a 3d 3c 3b Tank 3e 3c Pump 1a 3d Well 3a 3b Figure 6 Santaquin City Water System Culinary Water Improvements

23 7f Legend 7e Study Area Parcels Pipelines Project # Diameter 7a 12 inch 7h 7b 12 inch Summitt Ridge 7a 7c Summitt Ridge 7b 7f 7c 16 inch 7d 12 inch 7e 10 inch 7f 10 inch 7g 12 inch 7h 12 inch Summitt Ridge 10 inch Summitt Ridge 12 inch 7g Summitt Ridge 16 inch 7d Figure 7 Santaquin City Water System Culinary Water Pipelines Up-Sized From 8 inch

24 5b 6i Legend Study Area Parcels 6i Pipelines Pressure Irrigation Project # Diameter 6i 4d, 24 6f, 12 6i Tanks Culinary Water Project # 6i 6i 6i 6i 6a 6b 5a 6c 6e 4c 4d 6g 4a 6a 6k 6d 6j 6g 6h 6i 6i 6j Booster or Aqueduct Turn Out PI Project # 4b 5a 5b 6h 6f 4c Project # 4a 6i 4b Pond Pressure Irrigation 6k Booster Pump or Well Culinary Water 6b Project # 6c 6d 6e PRV Culinary & PI 6i Figure 8 Santaquin City Water System Future Water Improvements

25 8m 8d 8h 8z Legend Study Area Parcels Pipelines Pressure Irrigation REP_NUM, DIAMETER 8a, 16 8aa, 8 8ab, 10 8ac, 8 8b, 10 8w 8x 8aa 8q 8y 8c, 10 8d, 10 8e, 10 8f, 16 8g 8g, 12 8b 8h, 10 8q 8i, 12 8j 8i 8f 8k 8z 8j, 10 8k, 10 8k, 12 8l, 10 8ab 8a 8r 8r 8r 8l 8s 8n 8o 8m, 16 8n, 10 8o, 12 8r 8p, 10 8c 8e 8v 8u 8q, 16 8r, 10 8r, 16 8r 8t 8p 8o 8r, 24 8r, 8 8s, 12 8t, 24 8u, 8 8v, 8 8w, 8 8x, 8 8ac 8y, 8 8z, 8 Figure 9 Santaquin City Water System Pressure Irrigation Up-Sized From Model to Serve Existing Connections

26 Appendix A Figure V-5 Allocation of Water Sources

27 CALCULATION OF CULINARY STORAGE CAPACITY REQUIREMENTS BY ZONE STORAGE REQUIRED AT BUILDOUT STORAGE TANK Users Irrig Acres Culinary Outdoor Fire Emerg Total Req Tank Cap Pressure Zone (conn) (acres) (gal) (gal) (gal) (gal) (gal) (gal) % UPPER EAST TANK (Proposed) 1,750,000 Upper East Zone , ,344 Upper East Zone ,000 - Upper East Zone ,200 - TOTALS , , , ,736 1,298,680 1,750,000 EAST ZONE TANK (Existing) 1,000,000 East Zone ,800 - UPPER ZONE TANK (Existing) 1,140, ,200 2,441,000 1,000,000 Upper Zone ,000 - TOTALS 2,602-1,040,800-1,140, ,200 2,441,000 2,000,000 COMBINE UPPER EAST TANK FOR FIRE AND EMERGENCY 1,380, ,936 3,739,680 3,750,000 SR UPPER WEST TANK (Proposed) 600,000 Summit Ridge Upper West Zone , ,328 SR UPPER TANK (Existing) 1,200,000 Summit Ridge Upper Zone , , ,332 1,791,660 West Zone ,400 - West Zone ,600 - TOTALS 2, , , , ,332 1,791,660 1,800,000 MAIN ZONE TANK (Existing) 500,000 MAIN ZONE TANK (Proposed) 3,100,000 SR MAIN ZONE TANK (Proposed) 5,000,000 Main Zone ,954,400 - NORTH TANK (Proposed) 500,000 North Zone ,000 - North Zone ,600 - North Zone ,350,800 - (blank) , , ,736 1,298,680 1,440,000 1,519,400 9,037,000 TOTALS 15,194-6,077,600-1,440,000 1,519,400 9,037,000 9,100,000 GRAND TOTALS 20, ,170,000 1,036,672 3,060,000 2,301,668 14,568,340 14,650,000 JUB Engineers F:\Projects\JUB\Santaquin\ \text\Appendix\Demand Calculations.xls

28 SANTAQUIN CITY WATER SYSTEM - CULINARY AND PRESSURE IRRIGATION Figure V-5 ALLOCATION OF WATER SOURCES (Revised Sept 2007) Year Conn Indoor Water (Culinary) Outdoor Water (Pressure Irrigation) Acres Required (mgd) Sources (mgd) Required (mgd) Sources (mgd) 1/4 a/conn 800 Wells 3.96 Summit Creek Irrig Cem CUP Total Springs Total Springs 0.25 (gal/conn/day) Cem Center East SR New (gpm/acre) City Shares mgd Well Developers bring 800 gpd/connection indoor quality water Developers bring 3.96 gpm/acre irrigation water , , , , , , , , , , , , , , , , , , , , , ,116 1, , ,280 1, , ,451 1, , ,630 1, , ,815 1, , ,007 1, , ,208 1, , ,416 1, , ,578 1, , ,746 1, , ,918 1, , ,096 1, , ,279 1, , NOTES: Water quantities are in million gallons per day (mgd). (1 mgd = 694 gallons per minute (gpm) = 1.55 cubic feet per second (cfs) = 3.07 acre feet per 180 day season The yearly increase in the number of connections matches the growth in the financial projections table - 6%, 4%, 3%. The yearly increase in acres reflects the addition of 1/4 acre of irrigable land with each new connection. The State indoor demand is based on 800 gpd/connection. The State outdoor demand is based on 3.96 gpm/irrigable acre. There are 2103 Shares of SC Irrig water. Other than SC JUB Engineers

29 Appendix B Project Calculations

30 1a. Booster Pump from the Upper Zone to the East Side Zone 8 Tapping Sleeve and Valve 1 each $ 3, $ 3, fitting and valve in pump house 1 LS $ 10, $ 10, Tapping Sleeve and Valve 1 each $ 4, $ 4, Inch Main Line 150 LF $ $ 8, Inch Main Line 150 LF $ $ 10, Booster Pump 2 each $ 24, $ 48, Electrical 1 each $ 70, $ 70, Emergency Generator 1 each $ 28, $ 28, Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 45, Total $ 228,338 2a. New Waterline to Correct Pressure Problems As per Bid 1 LS $ 209, $ 209,369 Other Fees Engineering, Legal, Finance, Administrative 25% $ 52,342 Total $ 261,711 3a. Reconfigure Summit Ridge Well to Pump into Main Zone 16 Inch Main Line 138 LF $ $ 13, Inch End Cap 1 each $ $ Connect to Existing 16" 1 LF $ $ Inch Bend 2 LF $ 1, $ 2, Reconfigure Well 1 each $ 144, $ 144,120 Electrical 1 each $ 85, $ 85,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 40,147 Total $ 285,737 3b. Construct a New Well on the West Side Drill New Well 1 each $ 500, $ 500,000 Pump and Motor 1 each $ 98, $ 98,000 Building 1 each $ 120, $ 120,000 Electrical 1 each $ 85, $ 85,000 Install Controls 1 each $ 40, $ 40,000 Misc Piping and Valves 1 each $ 60, ,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 225,750 Total $ 1,128,750 3c Construct a Reservoir to Serve the Main Zone 16 Inch Main Line 1,400 LF $ ,036 Earthwork (Cut) C.Y. $ 6.00 $ 68, Earthwork (Fill) 9500 C.Y. $ 6.00 $ 57, Pipe Works 1 each $ 10, $ 10, Valve Vault 1 each $ 50, $ 50, Float and Telemetrics 1 each $ 20, $ 20, Million Gallon Tank 1 each $ 2,034, $ 2,034,600 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 590,009 Total $ 2,950,045

31 3d. Construct Booster Pump from the Main Zone to the SR Upper Zone 16 Inch Main Line 830 LF $ $ 80, Inch Bend 3 each $ 1, $ 3, Connect to Existing 16" 1 each $ $ Inch End Cap 1 each $ $ Booster Pump 2 each $ 35, $ 70,600 Building 1 each $ 120, $ 120,000 Electrical 1 each $ 85, $ 85,000 Emergency Generator 1 each $ 54, $ 54,500 Install Controls 1 each $ 20, $ 20,000 Misc Piping and Valves 1 each $ 60, $ 60,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 123,690 Total $ 618,451 3e. Construct a Main Pipeline to Summit Ridge As per Final Payment 1 LS $639, $ 639,180 Other Fees Engineering, Legal, Finance, Administrative 25% $ 159,795 Total $ 798,975 4a Construct a Pressure Irrigation Reservoir on the west side (Main Zone) 24 Inch Main Line 200 LF $ $ 20,261 Earthwork (Cut) C.Y. $ 6.00 $ 314,148 Earthwork (Fill) C.Y. $ 6.00 $ 261,790 Clay Liner 6200 C.Y. $ $ 68,200 Rip Rap 3000 C.Y. $ $ 180,000 Inlet/Outlet Structure 1 each $ 150, $ 150,000 Emergency Outlet 1 each $ 40, $ 40,000 Overflow Structure 1 each $ 120, $ 120,000 Float and Telemetrics 1 each $ 20, $ 20,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 293,600 Total $ 1,468,000 4b. Booster Pump from Main Pressure Irrigation Zone to the Summit Ridge Upper Zone 12 Inch Main Line 800 LF $ $ 36, Booster Pump 1 each $ 35, $ 35,300 Building 1 each $ 80, $ 80,000 Electrical 1 each $ 45, $ 45,000 Misc Piping and Valving 1 each $ 60, $ 60,000 Install Controls 1 each $ 10, $ 10,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 66,601 Total $ 333,005 4c. Construct an Irrigation Reservoir at Summit Ridge Upper Zone Earthwork (Cut) 6547 C.Y. $ 6.00 $ 39, Earthwork (Fill) 5456 C.Y. $ 6.00 $ 32, Pipe Works 1 each $ 4, $ 4, Valve Vault 1 each $ 40, $ 40, Float and Telemetrics 1 each $ 20, $ 20,000 1 Million Gallon Tank 1 each $ 800, $ 800,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 234,005 Total $ 1,170,024

32 Construct Irrigation Main from Santaquin to Summit Ridge 4d. 24 Inch Main Line 20,720 LF $ $ 2,639,728 24" Cross - LF $ 2, $ - 24" Tee - LF $ 2, $ - Reducers - each 1300 $ - Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 659,932 Total $ 3,299,660 5a. Construct a Connection to the CUP Aqueduct to serve the Main Zone Vault 1 each $ 90,000 $ 90,000 Pipe inside Vault 1 ls $ 50,000 $ 50,000 Electrical 1 ls $ 42,000 $ 42,000 Valves 1 ls $ 50,000 $ 50,000 Meter 1 each $ 10,150 $ 10,150 Controls 1 ls $ 10,000 $ 10,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 63,038 $ 315,188 5b. Construct a Connection to the CUP Aqueduct to serve the North Zone Vault 1 each $ 90,000 $ 90,000 Pipe inside Vault 1 ls $ 45,000 $ 45,000 Electrical 1 ls $ 42,000 $ 42,000 Valves 1 ls $ 41,700 $ 41,700 Meter 1 each $ 10,150 $ 10,150 Controls 1 ls $ 10,000 $ 10,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 59,713 $ 298,563 6a. Construct a Culinary Tank Adjacent to the Existing Main Zone tank Earthwork (Fill) 8500 C.Y. $ 6.00 $ 51, Pipe Works 1 each $ 16, $ 16, Valve Vault 1 each $ 50, $ 50, Float and Telemetrics 1 each $ 20, $ 20,000 3 Million Gallon Tank 1 each $ 2,250, $ 2,250,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 596,750 Total $ 2,983,750 6b. Construct a Culinary Tank to Serve the Upper East Zone Earthwork (Cut) 4800 C.Y. $ 6.00 $ 28, Earthwork (Fill) 4000 C.Y. $ 6.00 $ 24, Pipe Works 1 each $ 4, $ 4, Valve Vault 1 each $ 40, $ 40, Float and Telemetrics 1 each $ 20, $ 20, ,000 Gallon Tank 1 each $ 500, $ 500,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 154,200 Total $ 771,000

33 6c. Construct a Culinary Booster Pump from East Side Zone to the Upper East Zone 12 Inch Main Line 100 LF $ $ 6, Misc Piping and Valving 1 each $ 50, $ 50, Booster Pump 2 each $ 82, $ 164,200 Building 1 each $ 80, $ 80,000 Electrical 1 each $ 85, $ 85,000 Emergency Generator 1 each $ 59, $ 59,800 Install Controls 1 each $ 20, $ 20,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 116,304 Total $ 581,521 6d. Construct a Culinary Booster Pump from the Main Zone to the Upper Zone 16 Inch Main Line 100 LF $ $ 8, Misc Piping and Valving 1 each $ 6, $ 6, Booster Pump 2 each $ 41, $ 82,800 Building 1 each $ 80, $ 80,000 Electrical 1 each $ 85, $ 85,000 Emergency Generator 1 each $ 63, $ 63,600 Install Controls 1 each $ 20, $ 20,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 86,494 Total $ 432,468 6e 6f 6g Reconfigure Cemetery Well to Pump into the Main Zone 10 Inch Main Line 120 LF $ $ 7, Inch Main Line 100 LF $ $ 7, Inch Tee 1 each $ $ Inch Bend 2 each $ $ 1, x 8 Inch Reducer 1 each $ $ Inch Tee 2 each $ $ 1, Inch Bend 3 each $ $ 2, Inch End Cap 1 each $ $ Connect to Existing 10" 1 each $ $ x 10 Inch Reducer 2 each $ $ 1, Inch Tee 1 each $ $ Inch End Cap 1 each $ $ Reconfigure Well 1 each $ 120, $ 120,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 36,321 Total $ 181,603 Construct a Pressure Irrigation Main line from Summit Creek Irrigation Line to Upper Pond 20 Inch Main Line 4,550 LF $ $ 520,065 Meter 1 each $ 900 $ 900 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 130,016 Total $ 650,981 Construct a Pressure Irrigation Tank to serve the East Side Zone Pipe Works 1 each $ 10, $ 10, Float and Telemetrics 1 each $ 20, $ 20,000 1 Million Gallon Tank 1 each $ 450, $ 450,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 120,000 Total $ 600,000

34 6h 6i 6j 6k Construct a pressure Irrigation Booster Pump from Upper Zone to East Side Zone 10 Inch Main Line 1,300 LF $ $ 64, Misc Piping and Valving 1 each $ 55, $ 55, Booster Pump 2 each $ 32, $ 64,200 Vault 1 each $ 31, $ 31,000 Electrical 1 each $ 85, $ 85,000 Emergency Generator 1 each $ 61, $ 61,000 Install Controls 1 each $ 20, $ 20,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 95,209 Total $ 476,045 Construct Pressure Reducing Stations for Culinary & Pressure Irrigation Systems PRV 22 each $ 5, $ 110, Misc Piping and Valving 22 ls $ 20, $ 440, Vault 22 each $ 8, $ 176,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 181,500 Total $ 907,500 Construct Pressure Irrigation Pond to serve Upper zone (Hansen Property) Item Estimated Quantity Unit Unit Price Amount Cut Haul Off Excess 26,833 YD 3 $ 3.75 $ 100, Fill 0 YD 3 $ 9.00 $ - Pond Protection (12") 26,167 YD 3 $ 4.00 $ 104, Filter/Bedding Layer (6") 4,100 TON $ $ 49, Clay Liner (18") 2,050 TON $ $ 51, Rip Rap (18") 4,000 YD 3 $ $ 48, Structures 3,600 TON $ $ 82, Pipe 3 EA $ 40, $ 120, Trail/Access 500 LF $ $ 75, Fencing 15,600 SF $ 0.50 $ 7, Misc (Metering, Stilling Well, Etc.) 2,000 LF $ $ 30, EA $ 20, $ 20, Engineer and Fees 1 EA $ 68, $ 68, Subtotal $ 758, Contingency $ 75, Total $ 834, Booster Pump Pressure Irriagation Main Zone to Upper Zone Misc Piping and Valving 1 each $ 55, $ 55, Booster Pump 2 each $ 32, $ 64,200 Buiilding 1 each $ 86, $ 86,487 Electrical 1 each $ 85, $ 85,000 Install Controls 1 each $ 20, $ 20,000 Other Fees contingence, Engineering, Legal, Finance, Administrative 25% $ 77,672 Total $ 388,359