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CITY OF BLACKFOOT Water Facility Planning Study November 12, 2020 ---PAGE BREAK--- Presentation Topics 2 Funding Opportunities Alternatives Summary Capital Improvements Plan Summarized Deficiencies User Rate Impacts Questions & Contacts ---PAGE BREAK--- Summarized Deficiencies 3 Roughly 1/6 of the fire hydrants in the City do not meet fire flow requirements due to a lack of looping and undersized waterlines Idaho Code requires hydrants be connected to 6-inch or larger waterlines City currently has many hydrants connected to 4- inch waterlines Annual average water usage of 296 gallons per capita per day (gpcd) is over 1.4 times greater than Idaho Average of 210 gpcd City experiences recurring water quality issues (coliform spikes) in distribution system due to a lack of disinfection Sanitary Survey Items from DEQ Inspection Well #7 has a fuel tank that needs moved away from the well Well #4 should be abandoned City will need additional water rights, water supply, and storage to accommodate population growth ---PAGE BREAK--- Water Right Capacity & Water Demands 4 0 2,000 4,000 6,000 8,000 10,000 12,000 0 3 6 9 12 15 18 21 24 Consumptive Demand (gpm) Hour 2018 Maximum Day Demand Consumptive Demand Firm Pumping Capacity Max Day Demand Max Water Right Diversion Rate PHD: 8,325 gpm MDD: 6,713 gpm Firm Capacity: 9,730 gpm Water Right: 9,624 gpm Year-Round Water Right: 8,828 gpm Summer Seasonal Water Right: 9,624 gpm ---PAGE BREAK--- 0 20 40 60 80 100 120 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 45,000 50,000 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 Water Right Diversion (cfs) Water Right Diversion (gpm) Population Minimum Water Right Diversion Required (GPM) Existing Water Right Diversion Limit Minimum Water Right Diversion Required (CFS) Water Rights Needed as Population Grows 5 Assuming demands remain similar per person moving forward (296 gallons per person per day), Water Right Diversion Capacity should at least provide for maximum day demands when adequate system storage is provided for peaking demands. Current Water Right: 9,624 gpm Population Min Right Req’d (gpm) Min Right Req'd (cfs) 12,000 6,713 15 15,000 8,447 19 20,000 11,262 25 30,000 16,894 38 40,000 22,525 50 50,000 28,156 63 60,000 33,787 75 70,000 39,418 88 80,000 45,049 100 ---PAGE BREAK--- Alternatives Summary 6 No Action Address Sanitary Survey Items Encourage Water Conservation Perform Leak Detection Add Chlorination at Wells Procure Additional Water Rights for future Wells Incorporate Cross Connection Monitoring & Enforcement Construct an additional 1,300 gpm well for every 2,300 people – at upcoming milestones Population 17,000 Population 19,300 Population 21,600 Supply Storage No Action Install Additional 1.5 MG Storage Tank & Booster Station Complex at Growth Milestones Assuming a Similar Peaking Factor Population 16,000 Population 32,000 Population 53,000 Population 74,000 Distribution No Action Complete Phased Improvements Phase 1 – Fire Flow and Old Lines Replace 7.5 Miles of 4- inch Waterline to Improve 66% of the Failing Fire Hydrants Phase 2 – Distribution Expansion Improvements ---PAGE BREAK--- NEED FOR A CAPITAL IMPROVEMENTS PLAN 7 ▶A capital improvements plan (CIP) is needed to identify planned upcoming infrastructure needs/costs that a City has ▶The City of Blackfoot’s Water System is a “fee- based” system, and it is critical that user rates meet the infrastructure need ▶A CIP provides an evaluation of where the City currently stands and what the plan is for the future based on City growth ▶As the population increases, so too does the demand on the water system ▶Helps the City to plan for the future! PLANNING GOAL “ Make appropriate investments in sewer and water to prepare for immediate needs and expected growth “ ---PAGE BREAK--- REPLACEMENT OF EXISTING WATER SYSTEM 8 ▶All components within the City’s water system have a useful life ▶Eventually all components within a water system will need replaced including piping, valves, fittings, fire hydrants, water service connections, water meters, water tanks, wells, and booster stations ▶It is critical for a water system to have an annual replacement plan and funding to minimize future emergencies due to failures of system components that have exceeded their useful life ▶If the City isn’t investing in the water system each year, it is falling behind The annual estimated cost of replacement of existing water infrastructure in Blackfoot is approximately $1.8 million. ---PAGE BREAK--- FUTURE WATER NEEDS 9 Infrastructure Expansion As the City’s population grows, so too does the demand on the water system Water Rights Water rights need to be monitored as the population of Blackfoot continues to grow – water rights are currently part of the CIP, and any potential available water right transfers should be analyzed for purchase State Code Priority I Water Improvements will bring the City into compliance with State Code Existing Infrastructure Existing water infrastructure (underground and above ground) have a useful life expectancy, so there needs to be a plan in place to replace the existing infrastructure as it becomes obsolete and in disrepair ---PAGE BREAK--- Capital Improvements Plan 10 ID# Item Opinion of Cost* Buildout Cost** Priority 1 Improvements (2020) – Cross Connection Monitoring, Chlorination Upgrades & 7.5 Miles of Waterline Improvements Total Priority 1 Improvements $9,839,000 $9,839,000 Priority 2 Improvements (Population 16,000+) – One New Well, Tank and Booster Station Complex Along with a Transmission Waterline Total Priority 2 Improvements $6,110,000 $6,110,000 Priority 3 Improvements (Population 19,000+) – Several New Wells, Tanks and Booster Station Complexes Along with Transmission Waterlines Total Priority 3 Improvements $6,110,000 $53,060,000 *All costs are in 2020 Dollars. Costs include approximate engineering and planning contingencies. The cost estimate herein is based on our perception of current conditions at the project location. This estimate reflects our opinion of probable cost at this time and is subject to change as the project design matures. Keller Associates has no control over variances in the cost of labor, materials, equipment, services provided by others, market conditions, or bidding strategies. Actual construction costs may vary. Buildout Cost for Priority 3 assumes: 20+ New Wells, 3 New Tanks, and Over 6 New Miles of Transmission Line. This cost would be spread out over time if/when the population of the City grows beyond 19,000 people ---PAGE BREAK--- Capital Improvements Plan 11 Priority I Improvements ---PAGE BREAK--- Estimated User Rate Impact 12 Priority I Improvements: Anticipated cost of $9.84 Million over several years Project impacts can vary depending on grant/loan combinations Anticipate $8 to $13 user rate increase per month per connection for a $9.84 million project (Assuming a 3,815 connections 30- year loan at 1.5 to 2% Interest) Priority II Improvements: Anticipated cost of $6.1 Million over several years Future user rate increases will depend largely on population Anticipate a $5 to $10 user rate increase pending financing of future development ---PAGE BREAK--- Funding Opportunities 13 Bond elections for incurring debt can be held in May or November Judicial Confirmation can be held year round Application Due Dates Idaho DEQ – Beginning January CDBG – Mid November ACOE – Open Application Stimulus – Depending on Federal and State Funding City Match – The City has been wise with its funds and plans to contribute some savings to limit rate increases Idaho DEQ SRF – Federally subsidized state funds Variable amounts annually for funding & principal forgiveness Community Development Block Grant (CDBG) – Block grants of $500,000 typical – must meet income requirements Army Corps of Engineers (ACOE) 595 Program – Variable loan and grant amounts Stimulus Funding – Amounts vary by year – expected increase stimulus funds for “shovel ready” projects in the near future Funding Types: Important Dates: ---PAGE BREAK--- QUESTIONS? City of Blackfoot email: [EMAIL REDACTED] website: cityofblackfoot.org I (208) 785-8600 I Blackfoot, ID Colter Hollingshead, PE email: [EMAIL REDACTED] other: kellerassociates.com I (208) 238-2146 I Pocatello, ID 14