WASTEWATER COMMITTEE MEETING July 21, 2020 (Via Teleconference) - - PowerPoint PPT Presentation

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

WASTEWATER COMMITTEE MEETING July 21, 2020 (Via Teleconference)

CLICK TO EDIT MASTER TITLE STYLE AGENDA

Opening Remarks

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

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Agenda

AGENDA

Action Items

A. Consider Approval of Wastewater Committee Meeting Minutes – June 24, 2020 Recommend Approval of Wastewater Committee Meeting Minutes

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Agenda

AGENDA

Action Items

B. Execution of Engineering Services Agreement for Buffalo Creek Interceptor Tunnel – Administrative Memorandum No. 5601

• Consider

recommendation

• n

authorizing the Interim Executive Director to execute engineering services agreement with Gresham Smith in the amount of $2,391,254 for final engineering design on Project No. 507-0549-19, Buffalo Creek Interceptor Tunnel

WHAT: Authorize an engineering services agreement for final design for the Buffalo Creek Interceptor Tunnel project, formerly called the Buffalo Creek Force Main Parallel project. WHY: Provide a gravity interceptor tunnel to convey 2040 flows from the Buffalo Creek Lift Station to the South Mesquite Creek Regional Wastewater Treatment Plant as recommended by the preliminary engineering report in lieu of a parallel force main and lift station improvements

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BUFFALO CREEK INTERCEPTOR TUNNEL

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Existing Buffalo Creek Lift Station constructed in 2004 and expanded in 2007 to 30 MGD (6 pumps) Conveyed through a 36-inch FM to South Mesquite Creek RWWTP

BUFFALO CREEK INTERCEPTOR TUNNEL

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Additional capacity of 45 MGD needed in the Buffalo Creek Interceptor System to convey flows up to 2040 due to growth in the service area

• Alternative 1 – Construction of a second lift station and force main at a cost of

$30.9 million (including $4.7 million of needed replacements on existing lift station)

• Alternative 2 – Construction of a gravity pipeline for additional 45 MGD capacity at

a cost of $25.6 million

• Alternative 3 (Recommended) – Construction of a gravity pipeline for the

total 75 MGD at a cost of $28.7 million. An estimated $80 million in savings will be realized in O&M costs as this

• ption allows the decommissioning of the existing lift station and force main

Consideration of a pipe size increase to accommodate 40 MGD from the City of Forney pending further evaluation of cost impacts to the cities.

• Interceptor will be tunneled beneath the East Fork of the Trinity River and

the floodplain

• Minimize environmental impacts and avoid State Registered cultural resources site
• Avoids an area with multiple utilities (water, gas, and wastewater)
• Reduces the impact of dam releases from Lake Ray Hubbard and general flooding

in the area during construction

• Energy Dissipator will be installed at Buffalo Creek Lift Station site
• To manage flows in a way that prevents turbulence which can cause odors
• Tunnel shaft at the SMRWWTP will be used as the wet well for the new

Plant lift station

• Engineer’s OPCC is $28.7 Million
• Submitted for Texas Water Development Board funding

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BUFFALO CREEK INTERCEPTOR TUNNEL Project Components

Agenda

RECOMMENDATION

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Consultant: Gresham Smith Scope: Final Engineering Design Project:

• No. 507-0549-19, Buffalo Creek Interceptor Tunnel

Amount: $2,391,254

Agenda

AGENDA

Action Items

C. Authorize Change Order No. 15 and Release of Retainage on Princeton Lift Station Improvements project – Administrative Memorandum No. 5603

• Consider recommendation on authorizing construction Change Order
• No. 15 with Crescent Constructors, Inc., in the amount of $438,591

and an additional 140 days and authorize release of retainage in the amount of $165,561.78

What: Authorize funding for a change order and a partial release of retainage for the Princeton Lift Station Improvements project. Why: Work on the lift station has reached substantial completion and is in operation. It is recommended retainage be released on work that has been completed and accepted. A change order is requested to add the fourth pump to this project for consistency and cost efficiency. Retainage will be withheld for the remaining change order work until it is completed.

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PRINCETON ROAD LIFT STATION IMPROVEMENTS Project Components

• New lift station to accommodate 25 MGD capacity
• New pumping to provide 8 MGD firm capacity
• New electrical, instrumentation, and controls

• Coordinate growth projections with the City

to balance cost of capacity improvements with the timing of need. A pump slot was included to allow flexibility to add a pump if growth occurred which has been realized.

• Addition of 4th pump now saves

construction costs and increases capacity from 8 MGD to 12 MGD

• Avoids a separate design and construction

project and provides consistent pump and electrical equipment

• Additional pump, piping, electrical and

instrumentation cost is $438,591

• Recommend reducing retainage on the

completed lift station work from 2% to 0% in the amount of $165,561.78

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PRINCETON ROAD LIFT STATION IMPROVEMENTS Additional Pump & Reduction in Retainage

Agenda

RECOMMENDATION

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Contractor: Crescent Constructors, Inc. Scope: Construction, Change Order No. 15 and Release of Retainage Project:

• No. 501-0401-15, Princeton Lift Station Improvements

Reduction In Retainage: $165,561.78 Additional Amount: $438,591.00 Additional Days: 140 days

Agenda

AGENDA

Action Items

D. Additional Engineering Services and Adoption of Resolution No. 20-34 authorize use of competitive sealed proposal procurement method for North McKinney Transfer Lift Station and North McKinney Transfer Force Main projects – Administrative Memorandum No. 5602

• Consider recommendation on authorizing additional engineering services with AECOM

Technical Services, Inc., in the amount of $566,633 on Project No. 501-0513-18, North McKinney Transfer Lift Station and adoption of Resolution No. 20-34 authorizing use of competitive sealed proposal procurement method under Texas Government Code Chapter 2269 for the North McKinney Transfer Lift Station, Project No. 501-0513-18, and the North McKinney Transfer Force Main, Project No. 501-0514-18

WHAT: Authorize funding for additional engineering services and the use of Competitive Sealed Proposal procurement method for construction of both the North McKinney Transfer Lift Station and the North McKinney Transfer Force Main projects. WHY: Additional engineering services are requested for the design and construction phase services of the expansion of the proposed North McKinney Transfer Lift Station to convey up to 128 million gallons per day peak flow to the Sister Grove Regional Water Resource Recovery Facility. The authorization to use the CSP procurement method for construction is requested for these projects due to their critical nature in supplying flow to the Sister Grove RWRRF project.

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NORTH MCKINNEY TRANSFER LIFT STATION & FORCE MAIN

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Additional Engineering Services

• AECOM Technical Services is under contract to provide design plans

and specifications for Phase I of North McKinney Transfer Lift Station (NMTLS) and North McKinney Transfer Force Main (NMTFM) to transfer flow to Sister Grove RWRRF.

• Phase I capacity of NMTLS is 64 MGD. Phase II construction which

expands the NMTLS to 128 MGD commences immediately after the completion of Phase I. Phase II of NMTLS is recommended to be included with Phase I for an additional construction cost of $9M.

• Competitive Sealed Proposal (CSP) Procurement method allows

NTMWD to establish weighted selection criteria for contractor selection based on price, experience and past performance.

• Schedule of these two projects is critical as the system will convey

wastewater flows to the Sister Grove RWRRF for treatment.

Agenda

RECOMMENDATION

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Consultant: AECOM Technical Services, Inc. Scope: Additional Engineering Services and CSP Procurement Method Project:

• No. 501-0513-18, North McKinney Transfer Lift Station
• No. 501-0514-18, North McKinney Transfer Force Main

Amount: $566,633 (Project No. 501-0513-18)

Agenda

AGENDA

Action Items

E. Execution of Right-of-Way Acquisition Program and Adoption of Resolution

• No. 20-35 Authorizing Use of Eminent Domain to Acquire Right-of-Way for the

Sister Grove Regional Water Resource Recovery Facility Outfall Pipeline project – Administrative Memorandum No. 5604

• Consider recommendation on authorizing the Interim Executive Director to

execute a right-of-way acquisition program for with a budget of $3,193,000; and, adoption of Resolution No. 20-35 authorizing the use of eminent domain to acquire right-of-way for the Sister Grove Regional Water Resource Recovery Facility, Outfall Pipeline, Project No. 301-0426-16, and delegating authority to initiate condemnation proceedings to the NTMWD Interim Executive Director

WHAT: Authorize funding to acquire permanent and temporary easements for the outfall pipeline at the Sister Grove Regional Water Resource Recovery Facility WHY: The outfall pipeline will transport treated water from the Sister Grove RWRRF to Stiff Creek, which flows into Sister Grove Creek and ultimately into Lavon Lake.

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SISTER GROVE REGIONAL WATER RESOURCE RECOVERY FACILITY

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Outfall Pipeline Right-of-Way Acquisition Program

• 4.5 Miles of 96-inch
• utfall pipeline
• 50.91 acres of

permanent easement (~120 feet wide)

• 11.91 acres of

temporary easement (~50 feet wide)

• Pipeline crosses two

NTMWD parcels and five other parcels

Agenda

RECOMMENDATION

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Consultant: N/A Scope: Right-of-way acquisition and the necessary support services to facilitate the purchasing of easements for the project Project: Project No. 301-0426-16, Sister Grove Regional Water Resource Recovery Facility, Outfall Pipeline Amount: $3,193,000

Agenda

AGENDA

Action Items

F. Pre-Construction and Procurement Services for the Construction Manager At-Risk for Sister Grove Regional Water Resource Recovery Facility – Administrative Memorandum No. 5600

• Consider recommendation on authorizing the remainder of pre-

construction and procurement services for the Construction Manager At-Risk with Garney Companies, Inc., in the amount of $1,153,988, on Project No. 301-0426-16, Sister Grove Regional Water Resource Recovery Facility

WHAT: Authorize funding the remainder of the pre-construction and procurement services under Amendment No. 1 to the Construction Manager at-Risk agreement for the Sister Grove Regional Water Resource Recovery Facility. WHY: A partial amount of pre-construction and procurement services was approved by Administrative Memorandum No. 5500 at the November 2019 Board Meeting with the understanding that the remainder of the services would be requested as funds become available from the Texas Water Development Board.

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SISTER GROVE REGIONAL WATER RESOURCE RECOVERY FACILITY

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Amendment No. 1

• Garney was authorized as CMAR for the Sister Grove RWRRF project

by November 2019 Board Meeting.

• Garney proposed a total fee of $3,010,403 for the pre-construction and

procurement services.

• November Board Meeting authorized $1,856,415 of cash funding with

the expectation to authorize the remaining amount when Texas Water Development Board (TWDB) funds become available.

• As funds have become available from TWDB, the remainder of pre-

construction and procurement services is being requested in the amount of $1,153,988.

• NTMWD will seek reimbursement of the total $3,010,403 from TWDB.

Agenda

RECOMMENDATION

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Contractor: Garney Companies, Inc. Scope: Pre-construction and procurement services Project:

• No. 301-0426-16, Sister Grove Regional Water Resource

Recovery Facility Amount: $1,153,988

Agenda

AGENDA

Discussion Items

• A. Sister Grove Regional Water Resource Recovery Facility bid

package and cost update

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SISTER GROVE REGIONAL WATER RESOURCE RECOVERY FACILITY

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Bid Packages

Bid Set Bid Packages Description Advertise Date Bid Date Percent

• f Total

Work Plant #1 QC, Site Development, Peak Flow, Headworks, Aeration Basins, Secondary Clarifiers, Instrumentation & Controls June 2020 July 2020 31% Plant #2 Electrical Equipment, Yard Pipe, Primary Clarifiers, Dewatering, Operations & Storage Buildings July 2020

• Aug. 2020

24% Plant #3 UV Disinfection, Flow Metering, Odor Control, Electrical Building

• Aug. 2020
• Sept. 2020

7% Plant #4 Solids Handling & Tank, Drain PS, Filters, Electrical Installation, Sidewalks & Paving

• Sept. 2020
• Oct. 2020

19% Pipeline #1 Outfall Pipeline and Tunnels TBD TBD 19%

SISTER GROVE REGIONAL WATER RESOURCE RECOVERY FACILITY

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90% Design Cost Model Update

• $420M construction budget for Phase 1 and 2
• Scope and cost changes include:

– $40M increase for outfall pipeline change to a single 96” pipe serving Phases 1-4 saving $43M compared to constructing parallel 78” pipelines – $40M cost due to hard limestone rock 2 to 7 feet below the surface impacts:

• Labor costs due to reduced productivity during excavation
• Material and hauling costs to purchase and deliver suitable backfill material
• Drainage, structural, yard piping, and electrical distribution costs

– $13M electric power supply, upgraded equipment, and plan development – $3M addition of dry cake storage and potable water main extension – $12M increase in general conditions and fees due to increased cost of work

• $528M CMAR cost model for 90% Phase 1 and conceptual Phase 2

– Outfall Pipe: $85M Phase 1: $371M Phase 2: $70M

SISTER GROVE REGIONAL WATER RESOURCE RECOVERY FACILITY

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Further Cost Model Development Steps

• 90% Value Engineering identified more than $20M in reductions to be

applied to the cost model

• Continue value engineering sessions for subsequent solicitation

sets, electrical, pipeline work, and Phase 2 expansion to further reduce total project costs

• Cost model includes general conditions, markups, contingencies,

and fees that also reduces with value engineering reductions

• Receipt of Solicitation Set #1 will help to further understand unit

price estimates for subsequent packages

• These efforts will help reduce the funding gap, but additional

funding needs for Phase 2 work should be expected

• Refinements to the cost model will be regularly updated to the

Committee over the next few months as bid packages are received

Agenda

AGENDA

Discussion Items

• B. Pretreatment program overview and proposed program changes

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NTMWD PRETREATMENT PROGRAM Reason for Discussion

• NTMWD submitted request to TCEQ to combine and modify all

approved pretreatment programs into a single program

• Ensure Board of Director awareness as we plan to begin contacting

cities to discuss final program submittal to TCEQ

• Once TCEQ approves program revisions we will need NTMWD Board

approval for the Industrial Waste Order, Multijurisdictional Pretreatment Agreements, and Budget Agreements with Cities

• Industrial Waste Order – details rules and requirements for industrial

users to comply with program regulations

• Multijurisdictional Pretreatment Agreement – details responsibilities

for City and NTMWD to implement program

• Budget Agreement – NTMWD prepares budget annually and City

agrees to pay for their allocation of the pretreatment budget

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EPA NATIONAL PRETREATMENT PROGRAM REQUIREMENT What is Pretreatment?

• Industries treat wastewater onsite, reducing pollutants discharged into

wastewater system that would require treatment at an additional cost

• Prevent pollutants from entering wastewater system that may cause

pass through or interference

• Improve opportunities to recycle and reclaim sludge
• Requirement to implement a pretreatment program established in the

TCEQ wastewater treatment plant permit

• EPA delegates authority to TCEQ to regulate program implementation

which includes program review and approval and onsite audits and inspections

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EPA NATIONAL PRETREATMENT PROGRAM REQUIREMENT

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NTMWD PRETREATMENT PROGRAMS TCEQ Approved Pretreatment Programs

Buffalo Creek Floyd Branch Muddy Creek/Wylie WWTP Panther Creek/Stewart Creek Rowlett Creek South Mesquite Creek Wilson Creek Sabine Creek (Pending TCEQ Approval) King’s Creek (Contract with City of Terrell to implement their pretreatment program, excluded from the NTMWD combined program)

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City # of Permitted Industries Allen 4 Forney 3 Frisco 2 (1 pending permit) McKinney 11 Melissa 1 Mesquite 12 Plano 2 Richardson 3 Rockwall 5 (1 pending permit) Royse City (2 pending approved program) Seagoville 3 Sunnyvale 1 Terrell 9 Wylie 7 Total 65

Summary of Permitted Facilities by City

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PRETREATMENT PROGRAM REQUIREMENTS Overview of NTMWD Pretreatment Program

• Identify and permit all industrial users
• Industrial Waste Surveys
• Work with Cities as new industries start up
• Sample permitted industries quarterly
• Inspect industries annually
• Compliance and Enforcement
• Continuously review compliance for reporting deadlines, limit

violations

• Draft and recommend appropriate enforcement activities for

violations

• Investigate unauthorized discharges

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NTMWD PRETREATMENT PROGRAMS Proposed Changes to Current Program

PROGRAM COMPONENT CURRENT PROGRAM PROPOSED CHANGES BENEFITS Industrial Waste Ordinance (IWO)

• Each City adopts their own IWO
• NTMWD references each City's

IWO for permits and enforcement

• NTMWD has one TCEQ/Board

approved IWO

• Each City refers to NTMWD's

IWO in their Ordinance

• Uniformity (easier to implement)
• Adaptability (easier to update as necessary)

Enforcement

• NTMWD drafts enforcement

documents and sends to City

• City signs and issues enforcement
• NTMWD drafts and issues

enforcement

• Shortens length of time between violation and

enforcement Monitoring Requirements

• NTMWD monitors each IU

quarterly

• Industries have self-monitoring and

reporting requirements outlined in permit

• NTMWD performs all required

monitoring

• NTMWD would analyze most samples in-house at

accredited laboratory

• NTMWD would be able to directly import lab results

into compliance tracking system

• Industries would no longer have to pay a contract

laboratory to sample and analyze for compliance.

• Industries would no longer self-report (potential for late

notification violations) Standard Operating Procedures, Forms, etc.

• Potential for 8 different SOPs,

forms, etc.

• One set of SOPs, forms
• Uniformity
• Adaptability

Multijurisdictional Pretreatment Agreement (MJPA)

• Each City has their own MJPA
• Uniform MJPA incorporating

program changes

• Greater uniformity

Cost Allocation

• Cost to implement program is

divided among users based on # of Outfalls and charged to Cities.

• Revised allocation approach

based on monitoring requirements, enforcement, compliance, administrative costs, etc.

• New system would be more representative of time

spent on each facility.

• NTMWD participates in TCEQ audits/inspections,

investigates unauthorized discharges, performs administrative functions to ensure program compliance.

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PROGRAM REVISION TIMELINE

NTMWD Request to TCEQ to combine all programs TCEQ approved NTMWD request Requirement to submit program to TCEQ within one year in Wilson Creek permit Submitted revised program to TCEQ Submitted additional documents to TCEQ based on initial review Submitted additional revised documents to TCEQ to validate legal authority TCEQ requested NTMWD to submit final program with any changes NTMWD resubmit final program to TCEQ

Jul-08 Nov-08 Mar-09 Jul-09 Nov-09 Mar-10 Jul-10 Nov-10 Mar-11 Jul-11 Nov-11 Mar-12 Jul-12 Nov-12 Mar-13 Jul-13 Nov-13 Mar-14 Jul-14 Nov-14 Mar-15 Jul-15 Nov-15 Mar-16 Jul-16 Nov-16 Mar-17 Jul-17 Nov-17 Mar-18 Jul-18 Nov-18 Mar-19 Jul-19 Nov-19 Mar-20 Jul-20 Nov-20 Mar-21

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REQUEST FOR NTMWD BOARD OF DIRECTORS Summary of Documents Needing Future Board Approval

Industrial Waste Order upon TCEQ approval

• Each City to adopt by reference in their respective ordinance
• Contains pretreatment rules for industrial users
• Establish NTMWD legal authority for implementation, management,

and enforcement of the pretreatment program

• Standardized document across NTMWD service area

Multijurisdictional Pretreatment Agreements for each City

• Details pretreatment program responsibilities of the NTMWD and City
• Delegates the pretreatment responsibilities and duties required by law

to NTMWD (with exceptions)

• NTMWD assumes responsibility for permit issuance, enforcement, etc.

Budget Agreement for each City

• NTMWD develop budget and Cities agree to fund their allocation

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Agenda

AGENDA

Discussion Items

• C. Budget review for Operations and Maintenance

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REVISED BUDGET GUIDANCE FOR FY20 AND FY21

Flat growth budget unless it is related to new or expanded facilities where possible

• Only items to meet our most essential service levels and growth projections:
• Engineering/Consultant Services/Studies
• Minimize capital outlay unless absolutely critical
• Only fill critical vacancies as determined by Executive Director and Deputy

Directors

• Overtime
• Only previously planned or required travel and training
• Partial year fund new positions starting January 1st.
• No pay increases for FY21.
• Minimal funding for escrow and contingency funds
• Staff will work with impacted cities

FY21 BUDGET SIGNIFICANT ITEMS (WASTEWATER)

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• Supplies: +$1.2M (7.0%)
• Chemicals +$600k
• Other Supplies +$600k
• Electrical Supplies +$370k
• Pipeline Supplies +$60k
• Safety Supplies +$40k
• Small Tools and Equipment +$40k
• Computer Supplies +$30k
• Office Supplies +$30k
• Services: +$4.0M (10.2%)
• Support Services +$2.5M (net direct and allocations)
• Maintenance +$1.5M
• Electric Power +$600k
• Landfill Service Fees -$500k
• Other -$100k

FY21 BUDGET SIGNIFICANT ITEMS (WASTEWATER)

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• Short Term Capital Outlay: +$1.1M
• Vehicle Equipment +$800k
• 3 Heavy Equipment Vehicles / Trailers
• 3 Replacements
• 11 Standard Equipment Vehicles
• 10 Replacements
• 1 New (WW Plant Supervisor – New Position)
• 3 Utility (Golf Cart / Gators)
• Machinery +$500k
• Non-Vehicle Equipment -$200k
• Transfers to Escrows: -$700k
• 8 Wastewater Bond Issues totaling $275 M Project Cost

Agenda

AGENDA

Discussion Items

• D. Review recent capital projects completed

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RECENT CAPITAL PROJECT COMPLETIONS

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Projects now in service in the past 6 months

• Wilson Creek RWWTP Expansion to 64 MGD

– 8 MGD Capacity expansion and solids handling improvements

• Wilson Creek RWWTP Electrical Improvements, Phase 1

– Electrical reliability improvements including inner electrical loop

• South Mesquite Creek RWWTP Filter & UV Improvements

– Elimination of chlorine gas disinfection and filter upgrades

• Lower White Rock Creek Lift Station Improvements

– Capacity expansion and metering improvements

• Beck Branch Parallel Interceptor, Phase II
• North McKinney Interceptor, Phase II

– Condition improvements and I&I reduction by lining pipes

• Princeton Lift Station Improvements & Parallel Force Main

– New lift station and capacity expansion to 8 MGD (expandable)

• Rowlett Creek Parallel Trunk Sewer Extension

– Surcharge/SSO reduction

RECENT CAPITAL PROJECT COMPLETIONS

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Wilson Creek RWWTP Expansion to 64 MGD

Solids dewatering, dry cake storage & loading bay Primary clarifiers & odor control

Agenda

AGENDA

Discussion Items

E. Opportunity for Committee members to provide feedback on Wastewater Committee meeting

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CLICK TO EDIT MASTER TITLE STYLE AGENDA

Discussion Items

F. Opportunity for Committee members to request potential future agenda items (No substantive discussion of items will take place at this time)

Adjournment

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