WASTEWATER COMMITTEE MEETING September 18, 2018 AGENDA I. CALL TO - - PowerPoint PPT Presentation

Regional Service Through Unity… Meeting our Region’s Needs Today and Tomorrow

WASTEWATER COMMITTEE MEETING September 18, 2018

AGENDA

I. CALL TO ORDER II. OPENING REMARKS A. Executive Director/Committee Champion Status Report concerning legislation and regulatory matters, budgets, current projects and ongoing Wastewater System programs of the District III. ACTION ITEMS A. Consider Approval of Wastewater Committee Meeting Minutes – May 24, 2018 B. Consider Action on the Selection of a Wastewater Committee Vice-Chairman C. Consider Action on the Selection of a Wilson Creek Regional Wastewater Treatment Plant Oversight Committee Chairman D. Consider Recommendation on Authorizing Execution of Engineering Services Agreement on Project No. 501-0470-17, McKinney Prosper Transfer Sewer E. Consider Recommendation on Authorizing Execution of Special Facility Contract with Seis Lagos Utility District F. Consider Recommendation on Authorizing Execution of Engineering Services Agreement on the North McKinney Lift Station Improvements and North McKinney Transfer Force Main Projects G. Consider Recommendation on Authorizing Execution of Engineering Services Agreement on Project No. 301-0471-17, Rowlett Creek Regional Wastewater Treatment Plant Peak Flow Management Improvements, Phase II H. Consider Recommendation on Authorizing Execution of Interlocal Agreement with the Collin County Related to Orr Road IV. DISCUSSION ITEMS A. New Policy for Membership in Regional Wastewater System/Upper East Fork Interceptor System for City of Melissa B. South Mesquite Regional Wastewater Treatment Plant Solids Handling Design C. South Mesquite Regional Wastewater Treatment Plant Peak Flow Preliminary Design D. Muddy Creek Wastewater Treatment Plant Aeration Basin, Odor Control, and Backup Power Improvements Construction Award E. System Performance Update F. Opportunity for Committee Members to Provide Feedback on Wastewater Committee Meeting G. Opportunity for Committee Members to Request Potential Future Agenda Items (No substantive discussion of items will take place at this time) V. ADJOURNMENT

CLICK TO EDIT MASTER TITLE STYLE AGENDA

Opening Remarks

A. Executive Director/Committee Champion Status Report concerning legislation and regulatory matters, budgets, current projects and ongoing Wastewater System programs of the District

Agenda

AGENDA

Action Items

A. Consider Approval of Wastewater Committee Meeting Minutes – May 24, 2018 Recommend Approval of Wastewater Committee Meeting Minutes

Agenda

AGENDA

Action Items

B. Consider Action on the Selection of a Wastewater Committee Vice-Chairman

Agenda

AGENDA

Action Items

C. Consider Action on the Selection of a Wilson Creek Regional Wastewater Treatment Plant Oversight Committee Chairman

Agenda

AGENDA

Action Items

D. Consider Recommendation

• n

Authorizing Execution

• f

Engineering Services Agreement on Project No. 501-0470-17, McKinney Prosper Transfer Sewer

• 2015 Upper East Fork Interceptor System (UEFIS) evaluation

identified the need for additional capacity

• Meet the build-out projections for the cities of Prosper and

McKinney

• Construct 6.4 miles of 48- through 72-pipe
• Start construction October 2019 and complete by the end of

2021

• On-going coordination with the City of McKinney’s utility and

parks departments MCKINNEY PROSPER TRANSFER SEWER Drivers & Goals

• Project delivery is divided into three construction phases:
• Phase I: 10,500 linear feet of 66- and 72-inch pipe. Engineer’s

preliminary OPCC is $12.5M.

• Phase II: 12,600 linear feet of 54- and 66-inch pipe. Engineer’s

preliminary OPCC is $11.0M.

• Phase III: 10,500 linear feet of 48-inch pipe. Engineer’s preliminary

OPCC is $7.6M.

MCKINNEY PROSPER TRANSFER SEWER Project Components

AGENDA

• D. Recommendation

Consultant: Halff Associates, Inc. Scope: Final Engineering Design Project:

• No. 501-0470-17, McKinney Prosper Transfer Sewer

Amount: $2,410,900

Agenda

AGENDA

Action Items

E. Consider Recommendation

• n

Authorizing Execution

• f

Special Facility Contract with Seis Lagos Utility District

SEIS LAGOS UTILITY DISTRICT SPECIAL FACILITY CONTRACT Background

• Seis Lagos Utility District (SLUD) current Water and Sewer System

customer

• NTMWD Operates and Maintains SLUD 0.25 MGD WWTP
• Effluent flows into Lavon Lake
• Regionalization promotes decommissioning small WWTPs in Lavon

Watershed

• SLUD signed agreement with WNE for future WW service; WNE

upsized collection system in accommodate SLUD flows

• WNE Customer of City of Wylie, WW flows to Muddy Creek WWTP
• SLUD requires new facilities to convey flows to WNE system

Seis Lagos Special Utility District Project

SEIS LAGOS UTILITY DISTRICT SPECIAL FACILITY CONTRACT Special Facility Contract

• SLUD approached NTMWD to fund project using Special Facility

Contract

• NTMWD

will issue bonds to fund project and

• ther

expenses (reimburse WNE for upsizing collection system)

• Major provisions of contract:
• NTMWD constructs project (lift station and force main)
• SLUD will operate and maintain facilities
• SLUD will pay principal and interest and associated expenses
• Term of contract is for the life of the bonds (30 years)

AGENDA

• E. Recommendation

Contracting Party: Seis Lagos Utility District, Texas Purpose: Execution of Wastewater Facilities Installment Sale Contract

Agenda

AGENDA

Action Items

F. Consider Recommendation

• n

Authorizing Execution

• f

Engineering Services Agreement on the North McKinney Lift Station Improvements and North McKinney Transfer Force Main Projects

• Lift station originally constructed in 2012
• Conveys 25 MGD to the Wilson Creek RWWTP through the North

McKinney Force Main.

• Study identified the North McKinney Lift Station as the site to

convey flows to the new Sister Grove Regional Water Resource Recovery Facility.

• Lift station improvements and a new force main goals:
• Meet initial phase service date in 2023 – 64 MGD peak flow
• Maintain ability to convey flows to Wilson Creek RWWTP
• Second phase estimated in service in 2028 – 128 MGD peak flow

NORTH MCKINNEY LIFT STATION AND TRANSFER FORCE MAIN Drivers and Goals

• Evaluate lift station alternatives including
• Re-purpose existing lift station
• Expansion of the existing lift station
• Construction of a new transfer lift station
• Develop three alternatives for proposed force main route
• Confirm pipe sizing and pump requirements
• Evaluate existing structures
• Site layout and yard piping
• Preliminary design report and recommended alternatives
• Planning level cost estimate is $46.6 M

NORTH MCKINNEY LIFT STATION AND TRANSFER FORCE MAIN Project Components

AGENDA

• F. Recommendation

Consultant: AECOM, Inc. Scope: Preliminary Engineering Design Project: North McKinney Lift Station Improvements and North McKinney Transfer Force Main Projects Amount: $378,558

Agenda

AGENDA

Action Items

• G. Consider

Recommendation

• n

Authorizing Execution

• f

Engineering Services Agreement on Project No. 301-0471-17, Rowlett Creek Regional Wastewater Treatment Plant Peak Flow Management Improvements, Phase II

• Rowlett Creek RWWTP has a current capacity of 24 MGD on an

annual average basis and peak flow capacity of 60 MGD.

• Phased expansion of peak flow capacity has lower costs than

new conveyance and expansion at Wilson Creek RWWTP.

• Phase I – peak flow capacity of 77 MGD (under construction)
• Phase II – peak flow capacity of 95 MGD
• Phase III – peak flow capacity of 120 MGD
• Phase II preliminary engineering recommended the following:
• Step-feed alternative which will save construction cost by re-

purposing many existing facilities

• New solids thickening and dewatering facilities

ROWLETT CREEK RWWTP PEAK FLOW IMPROVEMENTS, PHASE II Drivers and Goals

• Additional pumps in two lift stations
• Convert Train A and Train B to step feed process
• Improvements to Train A clarifiers
• Demolition of existing Train A and Train B chlorination facilities

to be replaced with:

• UV disinfection facilities
• Disk filter facilities
• Various pipe capacity improvements
• Electrical and instrumentations improvements--including

generators

• Demolition of existing solids thickening, dewatering and

support facilities and replacement with new solids facilities

• Engineer’s preliminary OPCC $50.8M

ROWLETT CREEK RWWTP PEAK FLOW IMPROVEMENTS, PHASE II Project Components

Solids Improvements

AGENDA

• G. Recommendation

Consultant: Hazen and Sawyer, Inc. Scope: Final Engineering Design Project:

• No. 301-0471-17, Rowlett Creek Regional Wastewater

Treatment Plant Peak Flow Management Improvements, Phase II Amount: $5,182,700

Agenda

AGENDA

Action Items

H. Consider Recommendation

• n

Authorizing Execution

• f

Interlocal Agreement with the Collin County Related to Orr Road

BACKGROUND

• NTMWD has been using Orr Road to transport Sludge from Wilson

Creek RWWTP to the Landfill since 1987.

• The District has not contributed to the repair of Orr Road in the past
• Orr Road is currently in need of replacement (expansion and upgrade

from asphalt to concrete).

• Settlement Agreement between NTMWD and Protestants indicates:
• NTMWD will be a good neighbor
• Operate in a manner unobtrusive to the quality of life of its neighbors
• Be responsive to the needs and concerns of the surrounding community.
• The Wilson Creek RWWTP Oversight Committee has aligned this

roadway improvement project with this portion of the Settlement Agreement.

PROJECT MAP

Upgrade CR 317 aka Orr Rd. from Stacy Rd south to Wilson Creek RWWTP plant entrance to concrete roadway.

PROJECT SCOPE & COST

NTMWD, Collin County, and Fairview will be participating toward the replacement of Orr Road project The segment of Orr Road identified for replacement will be a concrete roadway with approximate length of 3200 feet designed to transport 80,000 pound vehicles. The total estimated cost of the project is $1,658,123. The amount contributed by each agency is as follows (pending approval)

Agency Contribution Percentage NTMWD $1,500,702 90.5% Collin County $120,000 7.2% Fairview $37,420 2.3% Total $1,658,123

INTERLOCAL AGREEMENT

Upon approval to move forward, an Interlocal Agreement (ILA) will be executed and includes the following:

• Scope of Work
• Project Cost with flexibility to increase cost by up to 10%. Option to

terminate agreement if cost exceeds 10% increase.

• County to manage design and construction.
• District contribution of up to $25,000 annually to provide interim

maintenance of Orr Road prior to construction start.

AGENDA

• H. Recommendation

Contracting Parties: Collin County, Town of Fairview and the North Texas Municipal Water District Purpose: Execution of Interlocal Agreement System: Regional Wastewater System Amount: Estimated obligation of $1,500,702 with allowance for 10% increase for total up to $1,650,772. Interim improvements up to $25,000 annually until construction begins.

Agenda

AGENDA

Discussion Items

A. New Policy for Membership in Regional Wastewater System/Upper East Fork Interceptor System for City of Melissa

NEW POLICY FOR REGIONAL WASTEWATER MEMBERSHIP

Bottom Line Up Front

• Recommendation from April Workshop to create new Policy for

existing customer to become a member of the RWWS and UEFIS

• No current policy defines requirements for a current customer of

RWWS or UEFIS to become member of these systems

• District

Policy 22 defines how to become a customer

• f

RWWS/UEFIS

• Some criteria exist in the RWWS and UEFIS contracts to become

a member

• Per contract, customer charges 20% higher than members

CURRENT CRITERIA TO BE MEMBER OF REGIONAL WASTEWATER

(Per Article VII, section 8.02 of current RWWS Contract)

• Formal request for membership
• Engineering studies funded by applicant to determine
• Estimated flows for next 5 years
• Any

new facilities

• r

upgrades estimated flows and the associated costs

• Board call a hearing, notifying all WW Member cities to review

request

• Board determine if City shall become a RWWS member
• New

Member City agree to minimum payments based

• n

minimum flows used to calculate RWWS payment

• Minimum flows cover payment for debt service and O&M

NEW POLICY FOR REGIONAL WASTEWATER MEMBERSHIP

New Policy Inter-dependence

• Section of Policy 22 – requires amending:

Customer: “ A customer may include an individual, corporation or portion of a

• city. Any city requesting service for its entire city limits and future

city limits MUST apply as MEMBER city, which would come under the provisions of the member city contracts and the customer policy would not be applicable.”

• No other policies are impacted with proposed new policy
• Delete

sentence as indicated, so any future member

• f

RWWS/UEFIS must be a customer first

NEW POLICY FOR REGIONAL WASTEWATER MEMBERSHIP

New Policy Minimum Criteria

• Customer of RWWS and or UEFIS for a minimum of 5 years
• WW service should be provided for entire city limits and future city limits
• If any city owned WWTPs exist, NTMWD must operate and maintain
• City supported district regionalization initiatives

NEW POLICY FOR REGIONAL WASTEWATER MEMBERSHIP

New Policy Evaluation Factors

• Financial impacts to other System Members
• Impact to System credit or bond rating
• Financial or engineering impact to system in general
• Does city have plan to encourage use of collection system to

reduce reliance on septic systems

• Current population of approximately 10,000
• City’s WW contributes to District’s reuse and reclaimed water

REGIONAL WASTEWATER MEMBERSHIP CONSIDERATION MELISSA

Current Request from City of Melissa to become Member of RWWS

• July 2013 - Joint request by City of Anna and City of Melissa for

membership

• Feb 2015 - FNI provide Draft Membership evaluation Study
• Metering discrepancy with Anna and Melissa observed
• Feb 2018 - City of Melissa requests to be considered separately

for membership into RWWS/UEFIS

• July 2018 - City of Melissa commits to installing new meter
• Sept 2018 - City of Melissa completed CMOM plan
• City has clearly demonstrated many aspects of supporting

District

NEW POLICY FOR REGIONAL WASTEWATER MEMBERSHIP

Way Forward

New Policy

• Brief policy committee on the New Policy tenants, take input and

make required changes

• Bring back to WW Committee and Policy Committee for

recommended approval and Present to full Board to establish New Policy for Regional Wastewater membership Melissa Membership

• City of Melissa follows through with commitments,
• Establish minimum flow at (No less than current charges)
• If Board approves, conduct hearing and notify all Member Cities
• Staff develop recommendation to Board for City of Melissa

Membership in RWWS and UEFIS

Agenda

AGENDA

Discussion Items

B. South Mesquite Regional Wastewater Treatment Plant Solids Handling Design

AGENDA

Discussion Items

B. South Mesquite Creek Regional Wastewater Treatment Plant Solids Handling Design

• South Mesquite Creek Regional Wastewater Treatment Plant

serves the cities of Forney, Heath, Mesquite, Rockwall, and Seagoville.

• Current permitted capacity of 33 MGD average and 82.5 MGD

peak flow

• Preliminary engineering recommends the following:
• Improvements to thickening building
• New solids dewatering facility
• New blending tank
• Solids Operations building with lockers and shower facilities
• Engineer’s preliminary OPCC is $19.9M.

SMCRWWTP SOLIDS HANDLING IMPROVEMENTS Drivers and Goals

Agenda

AGENDA

Discussion Items

C. South Mesquite Regional Wastewater Treatment Plant Peak Flow Preliminary Design

• Current permitted peak flow capacity of South Mesquite Creek

RWWTP is limited to 82.5 MGD.

• Existing flows received have exceeded a 2.5 peaking factor and

increasing flows due to growth.

• Conveyance System Capacity Assessment Phase I project is

scheduled for completion in September 2018

• Calibrated model of the entire system
• Preliminary engineering is recommended to identify a peak flow

management strategy to reliably treat wet weather flows at a sustainable cost for NTMWD. SMCRWWTP PEAK FLOW MANAGEMENT Drivers and Goals

Agenda

AGENDA

Discussion Items

D. Muddy Creek Wastewater Treatment Plant Aeration Basin, Odor Control, and Backup Power Improvements Construction Award

• Muddy Creek WWTP serves the cities of Murphy and Wylie and

was originally constructed in 2005 with a capacity of 5 MGD and expanded to 10 MGD in 2008.

• Preliminary engineering evaluation in 2015 recommended the

following:

• Emergency generators to provide backup power to meet TCEQ

requirements

• Odor control facilities for the primary clarifiers
• Replace five programmable logic controllers
• NTMWD staff presented recommendations from the evaluation

to the cities of Murphy and Wylie in January 2017

• Engineer’s opinion of probable construction cost is $7.4M

MUDDY CREEK WWTP AERATION BASINS, ODOR, BACKUP POWER Drivers and Goals

Agenda

AGENDA

Discussion Items

E. System Performance Update

Agenda

AGENDA

Discussion Items

F. Opportunity for Committee Members to Provide Feedback on Wastewater Committee Meeting

CLICK TO EDIT MASTER TITLE STYLE AGENDA

Discussion Items

• G. Opportunity for Committee Members to Request Potential

Future Agenda Items

(No substantive discussion of items will take place at this time)

Adjournment