DS-16-161 Water Reuse Master Plan

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Information about DS-16-161 Water Reuse Master Plan

Published on January 4, 2017

Author: CityofKilleen

Source: slideshare.net

1. Reuse Master Plan City of Killeen November 1, 2016

2. Reuse Master Plan Process STRATEGIC PLANNING CUSTOMER EVALUATION AND DEMAND PROJECTIONS REUSE SYSTEM CIP FINANCIAL EVALUATION REUSE MASTER PLAN PRESENTATION 2

3. Strategic Planning • Identify Implementation Challenges & Solutions • Document Regulations for Reuse • Recommended Revisions to City Standards • Coordination with Bell County WCID #1 • Benchmarking with 11 Local & National Utilities 3

4. Reuse Master Plan Process STRATEGIC PLANNING CUSTOMER EVALUATION AND DEMAND PROJECTIONS REUSE SYSTEM CIP FINANCIAL EVALUATION REUSE MASTER PLAN PRESENTATION 4

5. Customer Evaluation • Review historical wastewater plant flows for available supply 5 9.93 3.15 8.81 43.80 50.60 36.45 0 5 10 15 20 25 300 5 10 15 20 25 30 35 40 45 50 55 60 9/2009 11/2009 2/2010 5/2010 8/2010 11/2010 2/2011 5/2011 8/2011 11/2011 2/2012 5/2012 7/2012 10/2012 1/2013 4/2013 7/2013 10/2013 1/2014 4/2014 7/2014 10/2014 12/2014 Precipitation(in) GrossEffluent(MGD) Precipitation South WWTP Monthly Max South WWTP Monthly Average North WWTP Monthly Max North WWTP Monthly Average

6. Customer Evaluation • Identify potential reuse customers – Schools, Parks, Golf Courses, Commercial, Industrial 6

7. Customer Evaluation 7 229.7 11.9 9.0 7.2 6.5 11.9 115.3 7.4 0.5 6.6 5.9 11.4 7.4 155.8 5.8 0.8 4.5 6.5 6.7 5.8 0.0 50.0 100.0 150.0 200.0 250.0 Stonetree Golf Course Killeen High School Haynes Elementary School Stone Creek Apartments Independence Place Apartments Texas A&M South Campus Killeen Community Center MillionGallons(MG) 2011 2012 2013 Large Irrigation Users

8. Customer Evaluation • Demands are highly cyclical, resulting in a small window each year for generating revenue. • Most utilities with successful reuse systems have a year-round base usage. 8 • Usage for Stonetree Golf Course (current reuse customer) is over 6 times larger than all potential customers combined.

9. Customer Demand Projections • Customer demands developed on a weekly basis (example below) 9

10. Reuse Master Plan Process STRATEGIC PLANNING CUSTOMER EVALUATION AND DEMAND PROJECTIONS REUSE SYSTEM CIP FINANCIAL EVALUATION REUSE MASTER PLAN PRESENTATION 10

11. Existing Reuse System – Repurposed existing water line sliplined to 18” diameter line – Pump Station at North WWTP – Currently supplies irrigation for the Stonetree Golf Course to a pond (non- pressurized) – Not included in the financial analysis 11

12. Reuse Capital Improvement Plan Development Process • Delineate Service Areas based on ground elevations • Determine reuse pumping, storage and water line requirements • Evaluate sizing and phasing with reuse hydraulic model • Eliminate potential projects with a high cost per million gallons ($/MG) 12

13. Buildout Reuse CIP

14. Reuse Capital Improvement Plan Costs Phase # Reuse Water System Capital Improvement Plan Cost 1 New Lower Service Area 3.0 MGD Pump Station and a 2.5 MG Ground Storage Tank 10,166,000$ 2 8" and Slip Lined 18" Reuse Water Lines along 28th St. and Veterans Memorial Blvd. 3,154,540$ 3 8" and 12" Reuse Water Line along 38th Street 684,830$ 4 8" Reuse Water Line along Rancier Avenue 753,830$ 5 8" & 16" Reuse Water Lines and Repurposing 0.25 MG Park St. EST 2,013,870$ 6 8" Reuse Water Line along East Rancier Avenue 602,890$ 7 8" Reuse Water Line along 60th Street 712,430$ 8 6" Reuse Water Line along 48th Street 56,930$ 9 8" Reuse Water Line along Roy Reynolds Drive 587,410$ 18,732,730$ 10 Lower Service Area 2.50 MGD Pump Station Expansion to 5.50 MGD at the North WWTP 747,500$ 11 New Douglas Mtn Service Area 3.50 MGD Pump Station, 1.5 MG Ground Storage Tank and 18" Reuse Water Transmission Line 9,792,550$ 12 12", 16" and 24" Reuse Water Lines along Watercrest Road 4,271,970$ 13 12" Reuse Water Line along Clear Creek Road 453,680$ 14 8" Reuse Water Line along Robinett Road 243,230$ 15,508,930$ 15 Lower Service Area 2.5 MGD Pump Station Expansion to 8.0 MGD and 1.0 MG Ground Storage Tank 1,868,750$ 16 Douglas Mtn Service Area 1.5 MGD Pump Station Expansion to 5.0 MGD and 1.0 MG Ground Storage Tank 1,569,750$ 17 16" Reuse Water Line and Repurposing Douglas Mountain 0.66 MG GST 7,748,210$ 18 8" Reuse Water Line along Clear Creek Road 543,380$ 19 8" Reuse Water Line along SH 195 376,050$ 20 6" Reuse Water Line along Stan Schlueter Loop 256,170$ 21 8" Reuse Water Line along Illinois Avenue 568,390$ 22 6" and 12" Reuse Water Lines along Cody Poe Road 1,411,920$ 14,342,620$ 48,584,280$Grand Total: 10Year 10 - 20 Year Total: 20 Year - Buildout Total: 20Year-Buildout10-20Year 10 Year Total:

15. Reuse Master Plan Process STRATEGIC PLANNING CUSTOMER EVALUATION AND DEMAND PROJECTIONS REUSE SYSTEM CIP FINANCIAL EVALUATION REUSE MASTER PLAN PRESENTATION 15

16. Financial Evaluation 16 • Developed Reuse Rate Structure – Break even analysis – Impact to Water and Wastewater CIPs – Potable Water Rate Structure – Local Reuse Rates (Typically Between $0.50 and $2.00/1,000 gal) • Developed Revenue & Cost Comparison • Developed Cost & Rate Model • Reviewed Two Financial Scenarios – Complete Buildout of Reuse CIP – Construction of 10 year CIP

17. Financial Evaluation: Scenario 1 (Full CIP) 17 • Funding of entire Reuse CIP over 50 years • Reuse Rate = $2.46/1,000 gal – High rate compared to other utilities – Study showed rates are typically $0.50-$2.00. • Positive Cash Flow first 5 years – $100,000 prior to bond issuance – Result of reduced cost of water to serve Stonetree Golf Course • Deficit in Reuse Fund – Average $3.5 million per year for over 50 years – Approximately 3.1% of current Water/Sewer Fund

18. Financial Evaluation: Scenario 2 (10-year CIP) 18 • Funding of 10 year Reuse CIP over 40 years • Reuse Rate = $2.46/1,000 gallons • Positive Cash Flow first 5 years – $100,000 prior to bond issuance – Result of reduced cost of water to serve Stonetree Golf Course • Deficit in Reuse Fund next 35 years – Average $1.5 million per year – Approximately 1.8% of current Water/Sewer Fund • Small positive Cash Flow after 40 years

19. Reuse Master Plan Process STRATEGIC PLANNING CUSTOMER EVALUATION AND DEMAND PROJECTIONS REUSE SYSTEM CIP FINANCIAL EVALUATION REUSE MASTER PLAN PRESENTATION 19

20. Reuse Master Plan Conclusions & Recommendations 20 • A direct nonpotable reuse system would be dependent on transfers from the Water/Sewer Fund, $1.5 – 3.5 million/year. • Providing reuse water to the Stonetree Golf Course results in a positive cash flow and should be continued. • Analysis shows that full development of a reuse water system will not result in cost savings to the city until after 35 years. • Reuse may become more financially attractive over time as alternative sources of supply become more expensive. • At this time, it is recommended that the City not pursue additional reuse customers, but reuse should be reevaluated in the future for customers with large nonpotable water demands.

21. Questions 21

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