Proposed Five Year Capital Improvement Plan (CIP) Update for - - PowerPoint PPT Presentation

Proposed Five Year Capital Improvement Plan (CIP) Update for FY21-FY25

Presentation to the Board of Directors April 28, 2020

CIP Projects are developed using specific criteria and the Strategic Plan as a Guiding Document.

Tier 1 => Mandatory Projects a. Regulatory Requirement

• b. Safety Obligation

c. Grant Funding Already Secured – Local Funding Match Requirement

• d. Imminent Failure Likely

Tier 2 => Necessary Projects a. Replacement Due to End of Useful Life

• b. Facility Developed in Partnership with

Project Proponent Tier 4 => Desirable Projects a. Increase Operational Efficiency b. Improves Reliability c. Improves Level of Service

• d. Coordination with Project Proponent or Other Local

Agency Project

CIP Ranking Criteria

Tier 3 => Recommended Projects a. Increase Capacity (Water or Sewer) b. Board Policy Driven c. Increase Assets Useful Life

• Plans Change
• Projects Often Take Longer Than Expected
• Grant Opportunities Can and Do Delay High Priority

Projects

• Emergencies Occur Regularly

Assumptions

Water CIP Totals FY21-25

Sewer CIP Totals FY21-25

All Water Projects

• Raw water: 15 Projects

$ 5.7 Million

• Treated water: 3 Projects $ 0.9 Million
• Distribution: 19 Projects $ 14.2 Million

All Sewer Projects

• Collections: 40 Projects

$ 13.2 Million

• Treatment: 3 Projects

$ 0.9 Million

• Reclamation: 2 Projects

$ 1.2 Million

FY21 CIP Water $5.4 Million Sewer $2.2 Million FY21-25 Total CIP Water $21.6 Million Sewer $15.3 Million

Upper Columbia Ditch- Spill 1 Cost Estimate: $ 419,375

The Problem

• 60 foot segment of old steel pipe spans a section of unstable slope and is likely to slide down

slope

• This segment of ditch serves the Columbia and Big Hill Water Treatment Plants (WTP), a

population of 4,000.

• Water flows to the following ditches: Upper and Lower Columbia, San Diego and Matelot,

provides water to 116 raw water customers and about 60 Ditch Domestic customers The Solution The proposed solution is to grade the ditch slopes back to a more stable condition, improve the drainage, and to replace the existing pipe with larger pipe in a more stable footing. This earthwork is complex due to the nature of the steep slopes and difficult and remote access to the site. This work will require working with surrounding land owners for the construction of access roads.

Upper Columbia Spill 1

2

Upper Columbia Spill 1

Cost Estimate: $ 115,000

The Problem The Solution

Algerine Ditch- Slum Dam Repair

• A hole has developed along the left bank of the creek immediately upstream of the

Algerine Slum Dam allowing water to undermine the existing shotcrete and flow through the Slum Dam causing significant leaking and likely erosion at several elements of the

• dam. The hole and leak will need to be stopped else further degradation will take place

causing further damage to the dam and diversion structure.

• The project is to install shotcrete in and around the hole described above to prevent
• leaking. Shotcrete is also proposed to be applied to areas extending from the left bank to

the right bank as shown in the drawing. A keyway is to be hand dug across the creek to expose the creek bottom surface about 30 feet upstream of the dam.

Algerine Slum Dam

Cost Estimate: $ 760,375

The Problem

Eureka Ditch- Pipe Segments Back to Open Ditch

• The Eureka Ditch segments of culvert in this area are very poorly supported by stacked rock

supports, wire tie-backs to trees and stumps that are subject to rotting.

• The poor condition and construction techniques and methods used in the past are indicative of

the remote location of this site.

• The Eureka Ditch serves water to the Ponderosa and Tuolumne Water Treatment Plant serving a

population of over 3,000 people.

• The water from the Eureka Ditch also flows to the Roaches Camp Ditch and serves over 90 raw

water connections and about 10 Ditch Domestic customers.

Eureka Ditch

Eureka Ditch

Eureka Ditch

Eureka Ditch

Cost Estimate: $ 760,375

The Solution

Eureka Ditch- Pipe Segments back to Ditch

• The proposed solution is to complete a study and CEQA to build roads for access to remove old

pipe and return the ditch back to its original capacity.

• Returning these areas back to open ditch will ease operations in the winter due to pipes

plugging with debris or snow and ice. This will help ensure water delivery to the treatment plants and raw water customers.

Cost Estimate: $ 693,600

The Problem

Matelot Ditch- Pipeline and Turbidity Station

• The Matelot Ditch serves the Columbia Water Treatment Plant (WTP) and is frequently

required to achieve a higher level of water treatment due to turbidity and other bacteriological contamination

• Due to a lack of flow control in the ditch, the ditch is operated at a flow rate that greatly

exceeds the demands of the WTP and consequently large volumes of water flow past the WTP in excess of the amount needed for downstream users

Matelot Reservoir

Matelot Ditch

Columbia WTP

Cost Estimate: $ 402,000

The Solution

Matelot Ditch- Pipeline and Turbidity Station

• The project entails the construction of a 1690 lineal feet, 14 inch diameter, C900 PVC raw

water supply pipeline from the Matelot Reservoir to the Columbia Water Treatment Plant (WTP), currently being fed by the Matelot Ditch.

• By completing the project, the District will protect the source water from contamination as

well save more than 300 acre feet of water per year by matching the flow in the pipeline to the Columbia WTP demands.

Cost Estimate: $ 295,000

The Problem The Solution

New Sonora WTP Land Acquisition

• The current WTP site does not have adequate space to construct a replacement facility. The

current facility has exceeded its useful life and is in need of replacement.

• In September 2018, the TUD Board adopted a siting study for the future Sonora Regional

Water Treatment Facility (WTF). A total of 4 sites were evaluated based on capital costs, neighborhood acceptance, phase ability, compatibility with external distribution system, environmental and permitting constraints, and ease of operations. The Board’s preferred location was the Ridge Site. Since that time, the property has been appraised, a purchase and sale agreement has been drafted, and staff is expecting to present to the Board a purchase and sale agreement for execution this summer.

Cost Estimate: $ 305,325 FY 21 Estimate: $ 233,625

The Problem The Solution

Apple Valley Sewer Lift Station Rehabilitation

• The Apple Valley Sewer Lift Station is located next to Chicken Creek which in severe storm

events rises to a level which puts our Lift Station under water. The most significant level being in 2018 where there was 3 feet of water inside the building. In the past, winter storms have resulted in the loss of several pumps, a generator and the fence that surrounds the Lift station.

• The Lift station needs to be completely rebuilt.
• This would encompass raising the site to a height where the water level would not impact the

station.

• Included would be two new sumps, two new pumps, a new generator, building and fence.

Apple Valley Lift Station

Total Cost Estimate: $ 857,640

The Problem The Solution

Mono Village Sewer Lift Station Consolidation

• The Mono Village SLS is in need of a total rehabilitation. This would include a new building,

generator, sumps, check valves, vaults and pumps. The hurdle to rehabilitating this station is there is no land at the current site or near the current site that would allow this.

• Consolidate the current lift station and run a new gravity line down Mono Way and tie into the

existing sewer line near Hess Ave.

FY21 Cost Estimate: $ 79,700

Mono Village Sewer Lift Station

Total Cost Estimate: $ 180,000

The Problem

Crossroads Sewer Lift Station Consolidation

• The Crossroads Sewer Lift Station needs new pumps, sump rehabilitation, a new

control panel, new generator, and a new fence. This lift station regularly gets tagged with graffiti and needs painting. Because of the debris and rags that are deposited into this station the collection crew cleans the sump every other week. Along with cleaning the station, the pumps must be pulled every month to prevent them from faulting.

Total Cost Estimate: $ 180,000

The Solution

Crossroads Sewer Lift Station Consolidation

• The best course of action would be to Jack and Bore underneath Highway 108 and tie the

existing Crossroads infrastructure to the system at the Law and Justice Center. This would accomplish several things.

• 1. The District would be able to consolidate the Crossroads Sewer Lift Station.
• 2. There would be more flow going to the Law and Justice Sewer Lift Station to aid in the

debris removal process.

• 3. The debris and rags would be removed by the grinder and screen that is currently in place

at the Law and Justice Sewer Lift Station.

Crossroads Sewer Lift Station

Total Cost Estimate: $ 23,000,000 New Regional Wastewater Treatment Facility FY21 Cost Estimate: $ 730,270

The Project Replace the existing facility with an entirely new facility contained within the footprint of the existing polishing ponds. The new facility will include new septage receiving, headworks with screening and grit removal, new extended aeration activated sludge basins, new secondary clarifiers, new tertiary filters, new chlorination basins, converting existing anaerobic digesters to aerobic digesters, and improving the sludge dewatering and storage facilities. The District has executed a design contract and is actively seeking funding for construction.

Total Cost Estimate: $ 619,850 Reclamation System – Teleli Golf Course Main

The Project Construct a 10-inch reclamation main across 5,000 lf of ranch land to deliver water to the Teleli Golf

• Course. The main would not be used until the RWWTP improvements were complete and all permits

were secured.

TUD 2035 Fifteen Year Planning

• TUD Owned Pre-1914 Water Rights
• Own and Operate Pinecrest Lake and Lyons Reservoir
• Own and Operate the Phoenix Powerhouse
• 7 Water Systems (4 Consolidated)

TUD 2035 Fifteen Year Planning

7 Water Systems (4 Consolidated)

• 1. Peaceful Pines
• 2. Upper Basin
• 3. Wards Ferry Ranches
• 4. Tuolumne
• 5. Columbia
• 6. Apple Valley
• 7. Sonora

TUD 2035 Fifteen Year Planning

4 Wat ater S Systems ms Con

• nsolidated
• 1. Cedar Ridge
• 2. Ponderosa
• 3. Scenic View
• 4. Phoenix Lake Park

TUD 2035 Fifteen Year Planning

6 6 Water r Trea eatm tment P Plants ts (8 8 Conso solidated)

• 1. New Sierra Pines
• 2. Tuolumne
• 3. Monte Grande
• 4. Big Hill
• 5. Columbia
• 6. New Sonora

TUD 2035 Fifteen Year Planning

6 6 Water r Trea eatm tment P Plants ts ( 8 8 Conso solidated)

• 1. Lakewood
• 2. Brentwood
• 3. Crystal Falls
• 4. Cedar Ridge
• 5. Phoenix Lake Park
• 6. Scenic View
• 7. Ponderosa
• 8. Greenley

Cost Estimate: Many Millions

TUD 2035 Fifteen Year Planning

• 49 Treated Water Tanks or Reservoirs in Service
• 27 Consolidated
• 36 Booster Stations in Service
• 20 Consolidate

• Sticking to the Strategic Plan
• Many Millions of Dollars
• Hard Work and Dedication
• Focused Commitment

What will it take for TUD to Accomplish?