WASTEWATER COMMITTEE MEETING August 26, 2020 (Via Teleconference) - - PowerPoint PPT Presentation

▶
wastewater committee meeting august 26 2020 via
SMART_READER_LITE
LIVE PREVIEW

WASTEWATER COMMITTEE MEETING August 26, 2020 (Via Teleconference) - - PowerPoint PPT Presentation

Apr 15, 2023 154 likes •626 views

Regional Service Through Unity Meeting our Regions Needs Today and Tomorrow WASTEWATER COMMITTEE MEETING August 26, 2020 (Via Teleconference) CLICK TO EDIT MASTER TITLE STYLE AGENDA Opening Remarks A. Chairman/Executive

slide-1
SLIDE 1

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

WASTEWATER COMMITTEE MEETING August 26, 2020 (Via Teleconference)

slide-2
SLIDE 2

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

2

slide-3
SLIDE 3

Rey Davila Receives Award at Virtual Texas Water

Rey Davila was recognized as the Water Environment Federation's William D. Hatfield Award recipient at the virtual Texas Water conference. Award recognizes an operator of wastewater treatment plants for outstanding performance and professionalism. Rey is a Class A Licensed Wastewater Plant Operator, serving as a Chief Operator at South Mesquite Creek Regional Wastewater Treatment Plant His achievements include:

  • Bringing Operations Challenge to NTMWD
  • Member of the Texas Commission on Environmental

Quality’s Utility Operator Advisory Committee

  • A TCEQ certified instructor
  • Went back to college to obtain a degree in environmental science
  • Building a legacy of mentoring and pass on a passion for
  • ur industry

Please join us in congratulating Rey on this well-earned recognition!

3

slide-4
SLIDE 4

4

Virtual Public Meeting for McKinney Transfer Sewer Project

  • Tentative date and

time: September 3rd at 6:00 p.m.

  • Jointly hosted by

NTMWD and City of McKinney

slide-5
SLIDE 5

CLICK TO EDIT MASTER TITLE STYLE AGENDA

ACTION ITEMS A. Consider Approval of Wastewater Committee meeting minutes – July 21, 2020 B. Authorize execution of engineering services agreement on Sister Grove Regional Water Resource Recovery Facility, Phase II – Administrative Memorandum No. 5610 C. Authorize execution of engineering services agreement on McKinney East Side Extension Improvements project – Administrative Memorandum No. 5611 D. Authorize construction Change Order No. 9 and partial release of retainage on Lower White Rock Creek Lift Station improvements project – Administrative Memorandum No. 5612 E. Adoption of Resolution No. 20-38 authorizing use of construction manager at-risk delivery method and authorize execution of engineering services agreement on South Mesquite Creek Regional Wastewater Treatment Plant Peak Flow Management and Expansion project – Administrative Memorandum No. 5613 DISCUSSION ITEMS A. FY20 amended and FY21 preliminary budget briefing B. Update on Sister Grove Regional Water Resource Recovery Facility, Phase I C. Discuss Rowlett Creek Regional Wastewater Treatment Plant Peak Flow Improvements, Phase II funding from Texas Water Development Board D. Opportunity for Committee Members to provide feedback on Wastewater Committee meeting E. Opportunity for Committee Members to request potential future agenda items

5

slide-6
SLIDE 6

Agenda

AGENDA

Action Items

A. Consider Approval of Wastewater Committee Meeting Minutes – July 21, 2020 Recommend Approval of Wastewater Committee Meeting Minutes

6

slide-7
SLIDE 7

Agenda

AGENDA

Action Items

B. Authorize execution of engineering services agreement on Sister Grove Regional Water Resource Recovery Facility, Phase II – Administrative Memorandum No. 5610

  • Consider recommendation on authorizing the Interim Executive Director

to execute an engineering services agreement with CDM Smith, Inc., in the amount of $9,622,886 for final engineering design of Project No. 301-0570-20, Sister Grove Regional Water Resource Recovery Facility, Phase II

What: Authorize funding for the final design and construction phase services for the Sister Grove Regional Water Resource Recovery Facility, Phase II project. Why: Design the expansion of the Sister Grove RWRRF to 32 million gallons per day (MGD) of annual average daily flow and peak two-hour flow of 128 MGD capacity to meet flow projections due to growth.

7

slide-8
SLIDE 8

SISTER GROVE REGIONAL WATER RESOURCE RECOVERY FACILITY

8

slide-9
SLIDE 9

SISTER GROVE REGIONAL WATER RESOURCE RECOVERY FACILITY

9

Phase II Project

  • Expand the Sister Grove RWRRF to 32 MGD annual average daily flow

and 128 MGD two-hour peak capacity

  • Additional process equipment
  • Two primary clarifiers
  • Two aeration basins
  • Two secondary clarifiers
  • Filter complex
  • Disinfection facility
  • Yard piping, distribution structures, electrical, instrumentation and

controls

  • Site work including additional roads, sidewalks fencing and lighting
  • Planning level estimated construction cost of Phase II is $95M
slide-10
SLIDE 10

SISTER GROVE REGIONAL WATER RESOURCE RECOVERY FACILITY

10

Phase II Engineering Services

  • Basic Services
  • Project management and coordination
  • Final plans and specifications
  • Opinions of probable construction cost
  • Bid phase services
  • Services during construction including starting and commissioning
  • Special Services
  • Electrical coordination study
  • Geotechnical investigation and engineering report
  • TWDB Clean Water State Revolving Fund coordination
  • Operations and maintenance manual update
slide-11
SLIDE 11

Agenda

RECOMMENDATION

11

Consultant: CDM Smith Inc. Scope: Final Engineering Design Project:

  • No. 301-0570-20, Sister Grove RWRRF, Phase II

Amount: $9,622,886

slide-12
SLIDE 12

Agenda

AGENDA

Action Items

C. Authorize execution of engineering services agreement on McKinney East Side Extension Improvements project – Administrative Memorandum No. 5611

  • Consider

recommendation

  • n

authorizing the Interim Executive Director to execute an engineering services agreement with Garver, LLC, in the amount of $1,644,200 for final engineering design on Project No. 501-0551-19, McKinney East Side Extension Improvements

What: Authorize a final design engineering services agreement for the McKinney East Side Extension Improvements project. Why: Replace and upsize an existing interceptor that is in a deteriorated condition and to increase the wastewater conveyance capacity due to growth projections.

12

slide-13
SLIDE 13

13

MCKINNEY EAST SIDE EXTENSION IMPROVEMENTS Background

  • Two existing interceptors convey

flow from the Cities of Anna, McKinney, and Melissa to the North McKinney Lift Station and future North McKinney Transfer Lift Station

  • 2016 internal inspection and

condition assessment identified deficiencies

  • Capacity improvements

recommended from the 2015 UEFIS Evaluation

  • Preliminary engineering design

completed July 2020

slide-14
SLIDE 14

14

McKINNEY EAST SIDE EXTENSION IMPROVEMENTS Final Engineering Design

  • Project Components
  • Replace 19,500 feet of existing 21” and 24” interceptor with 54” to

66” interceptor to meet future capacity requirements

  • Basic Services
  • Texas Water Development Board funding
  • Final plans and specifications
  • Bid phase services
  • Construction phase services
  • Special Services
  • Topographic survey
  • Legal descriptions for easements
  • Subsurface utility engineering
  • Environmental services and geotechnical investigation
slide-15
SLIDE 15

Agenda

RECOMMENDATION

15

Consultant: Garver, LLC Scope: Final engineering design Project:

  • No. 501-0551-19, McKinney East Side Extension Improvements

Amount: $1,644,200

slide-16
SLIDE 16

Agenda

AGENDA

Action Items

D. Authorize construction Change Order No. 9 and partial release of retainage on Lower White Rock Creek Lift Station improvements project – Administrative Memorandum No. 5612

  • Consider recommendation on authorizing execution of construction

Change Order No. 9 for a reduction in contract value of $225,842.80 and an additional 265 days and authorize partial release of retainage from 5% to 1% in the amount of $277,000.30 with Archer Western

What: Authorize a reduction in contract amount by Change Order No. 9 and authorize partial release of retainage from 5% to 1% for the Lower White Rock Creek Lift Station Improvements project. Why: Work on the lift station has reached substantial completion and is in operation. Change Order No. 9 involves work required to adjust the pressure setting of the two surge valves and reduction in contract quantities for items that are no longer

  • necessary. Staff recommend partial retainage be released for work that is completed

and accepted. Retainage will be withheld for the remaining change order work until final completion.

16

slide-17
SLIDE 17

LOWER WHITE ROCK CREEK LIFT STATION IMPROVEMENTS

17

Proposed Contract Modifications

Reduction in Retainage

  • Lift Station is substantially

complete pending change order work for surge valve adjustments and is in operation

  • Recommend reducing retainage

from 5% to 1% to allow contractor to pay subcontractors for work that has been completed and accepted.

  • Reduction in retainage of

$277,000.30 Change Order No. 9

  • Additional work to adjust

pressure settings of two surge valves to prevent them from opening during flushing cycle of the lift station

  • Reductions in quantities for:
  • Bypass pumping diesel fuel
  • Fencing demolition
  • Permitting allowance
  • Electrical service allowance
  • Credit of $225,842.80
slide-18
SLIDE 18

Agenda

RECOMMENDATION

18

Contractor: Archer Western Construction LLC Scope: Construction, Change Order No. 9, Partial Release of Retainage Project:

  • No. 501-0381-15, Lower White Rock Creek Lift Station

Improvements Change Order Amount: ($225,842.80) (reduction in contract value) Additional Days: 256 days Reduction in Retainage: $277,000.30

slide-19
SLIDE 19

Agenda

AGENDA

Action Items

E. Adoption of Resolution No. 20-38 authorizing use of construction manager at-risk delivery method and authorize execution

  • f

engineering services agreement on South Mesquite Creek Regional Wastewater Treatment Plant Peak Flow Management and Expansion project – Administrative Memorandum No. 5613

  • Consider recommendation on adoption of Resolution No. 20-38 authorizing use of

construction manager at-risk delivery method under Texas Government Code, Chapter 2269, for South Mesquite Creek Regional Wastewater Treatment Plant Peak Flow Management and Expansion, Project No. 301-0525-20 and authorize the Interim Executive Director to execute an engineering services agreement with Carollo Engineers, Inc., in the amount of $1,653,400 for preliminary engineering design

What: Authorize an engineering services agreement for preliminary design of the South Mesquite Creek Regional Wastewater Treatment Plant Peak Flow Management and Expansion project. Authorize the use of the Construction Manager At-Risk Delivery method for the project. Why: Develop preliminary design of influent flow handling, preliminary treatment, and storage facilities associated with peak flow management. The authorization to use the CMAR delivery method for construction is requested due to the need to manage multiple construction packages and expedite delivery of project components.

19

slide-20
SLIDE 20

SOUTH MESQUITE CREEK RWWTP PEAK FLOW & EXPANSION

20

Background

  • The South Mesquite Creek RWWTP current permitted annual average

daily flow is 33 million gallons per day (MGD) and peak two-hour flow is 82.5 MGD.

  • Recent flow monitoring data received as part of the South Mesquite

Conveyance System Evaluation suggests the peak flow condition can extend beyond a 2-hour duration.

  • The South Mesquite Creek RWWTP Peak Flow Management conceptual

design report determined that onsite storage facilities need to be provided to store peak flows in excess of the plant’s permitted treatment capacity.

  • Population projections in the service area indicate expansion to 41

MGD annual average daily flow is needed.

slide-21
SLIDE 21

SOUTH MESQUITE CREEK RWWTP PEAK FLOW & EXPANSION

21

slide-22
SLIDE 22

SOUTH MESQUITE CREEK RWWTP PEAK FLOW & EXPANSION

22

Objectives

  • Develop hydraulic and process capacity modeling of the existing plant

in support of optimizing and developing the project components for the peak flow and expansion.

  • Develop preliminary designs and estimates for the peak flow basins, a

new influent lift station and headworks to accept the flow from the proposed Buffalo Creek Interceptor Tunnel.

  • Future design services will be recommended for final design of the

peak flow improvements and for preliminary and final design of the expansion to 41 MGD.

  • Complete application and with the Texas Water Development Board for

Clean Water State Revolving Funds.

  • Procure a Construction-Manager-At Risk (CMAR) to develop work

packages to meet the District’s funding availability and schedule.

slide-23
SLIDE 23

Agenda

RECOMMENDATION

23

Consultant: Carollo Engineers, Inc. Scope: Preliminary engineering design Project: No. 301-0525-20, South Mesquite Creek Regional Wastewater Treatment Plant Peak Flow Management and Expansion Amount: $1,653,400

slide-24
SLIDE 24

Agenda

AGENDA

Discussion Items

  • A. FY20 amended and FY21 preliminary budget briefing

24

slide-25
SLIDE 25

REGIONAL WASTEWATER SYSTEM - BUDGET

25

REGIONAL WASTEWATER SYSTEM

Allen, Forney, Frisco, Heath, McKinney, Melissa, Mesquite, Plano, Princeton, Prosper, Richardson, Rockwall and Seagoville

slide-26
SLIDE 26

26

REGIONAL WASTEWATER SYSTEM - BUDGET Expenditures by Category

$5 $10 $15 $20 $25 $30 $35 $40

Personnel Operating Capital FY20 Bdgt $13.3 $31.5 $32.0 FY20 Amnd $13.5 $31.5 $32.0 FY21 Bdgt $13.5 $33.0 $34.0

Millions

Personnel: +1 – Wilson Creek For Sister Grove 1.5% Incr 0% $494 M Bonds 4.8% Incr 2.2% Incr 6.2% Incr $1M Support Svcs Alloc $1M Capital Outlay <$0.6M> Escrow <$0.3M> CIP Fund Decr $2.3M Debt Incr $114 M Bonds 0%

slide-27
SLIDE 27

REGIONAL WASTEWATER SYSTEM - FY21 BOND ISSUES

27

01/2021 Regional Wastewater System $38 M (CWSRF)

  • Rowlett Creek RWWTP Peak Flow Management Phase IIA Solids

Improvements 01/2021 Regional Wastewater System $15 M

  • Wilson Creek RWWTP Step Feed and Aeration Basin Improvements

08/2021 Regional Wastewater System $61 M (CWSRF)

  • South Mesquite RWWTP Peak Flow Management & Expansion Phase I and

Phase II

slide-28
SLIDE 28

UPPER EAST FORK INTERCEPTOR SYSTEM - BUDGET

28

UPPER EAST FORK INTERCEPTOR SYSTEM

Allen, Frisco, McKinney, Melissa, Plano, Princeton, Prosper and Richardson

slide-29
SLIDE 29

29

UPPER EAST FORK INTERCEPTOR SYSTEM - BUDGET Expenditures by Category

$0 $5 $10 $15 $20 $25 $30

Personnel Operating Capital FY20 Bdgt $2.3 $11.7 $24.9 FY20 Amnd $2.3 $11.8 $24.9 FY21 Bdgt $2.3 $13.1 $24.6

Millions

0% 1.1% Incr 0% 0% 1.3% Decr 12.6% Incr $0.5M Support Svc Allocation $1.1M Chemicals Includes $85M in Bonds

slide-30
SLIDE 30

CLICK TO EDIT MASTER TITLE STYLE UPPER EAST FORK INTERCEPTOR SYSTEM – FY21 BOND ISSUES

30

  • Bond Issues
  • 02/2021 Upper East Fork Interceptor System $85M
  • North McKinney Transfer Lift Station; McKinney-Prosper Transfer Sewer

Phase I and Sloan Creek Force Main

slide-31
SLIDE 31

SEWER SYSTEM - BUDGET

31

SEWER SYSTEM

slide-32
SLIDE 32

32

SEWER SYSTEM - BUDGET Expenditures by Category

$0 $5 $10 $15 $20 $25

Personnel Operating Capital FY20 Bdgt $6.9 $17.2 $17.9 FY20 Amnd $6.9 $17.1 $17.9 FY21 Bdgt $6.8 $18.5 $20.5

Millions

0% 0.6% Decr 0% 7.3% Incr 14.9% Incr 0.8% Decr $0.9M Support Svcs Alloc $0.8M Maintenance $2.1M Sabine Creek WWTP $8.2M Muddy Creek WWTP $74.5M Buffalo Creek Interceptor (2 Issues) $16.8M Mustang Creek Interceptor

slide-33
SLIDE 33

SEWER SYSTEM - FY21 BOND ISSUES

33

10/2020 Sabine Creek Wastewater Treatment Plant $2.1M

  • Feasibility Study & Master Plan and Sub-Regional WWTP Improvements &

Expansion to 5 MGD 12/2020 Muddy Creek Wastewater Treatment Plant $8.2M

  • Design of Expansion to 15 MGD and Operations Building Improvements

12/2020 Buffalo Creek Interceptor $32.4M

  • Buffalo Creek Parallel Interceptor Phase I

08/2021 Forney Mustang Creek Interceptor $16.8M

  • Lift Station Phase II and Forney Force Main Improvements

08/2021 Buffalo Creek Interceptor System $42M (CWSRF)

  • Buffalo Creek Interceptor Tunnel
slide-34
SLIDE 34

Agenda

AGENDA

Discussion Items

  • B. Update on Sister Grove Regional Water Resource Recovery

Facility, Phase I

34

slide-35
SLIDE 35

35

LOCATION MAP

SISTER GROVE RWRRF PROGRAM SUMMARY

slide-36
SLIDE 36

36

SCHEDULE UPDATE

SISTER GROVE RWRRF PROGRAM SUMMARY

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

  • Aug. 2020
  • Sept. 2020

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

  • Sept. 2020
  • Oct. 2020

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

  • Oct. 2020
  • Nov. 2020

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

slide-37
SLIDE 37

37

Headworks 90% Est: $21.1M Bid Amount: $14.4M Aeration Basins 90% Est: $29.0M Bid Amount: $20.3M Secondary Clarifiers 90% Est: $20.3M Bid Amount: $14.2M Site Development (Heavy Civil) 90% Est.: $46.3M Bid Amount: $17.2M

BID PACKAGES

Plant Package #1

SISTER GROVE RWRRF PROGRAM SUMMARY

Blower Building 90% Est.: $6.7M Bid Amount: $5.6M

slide-38
SLIDE 38

38

BID PACKAGES

SISTER GROVE RWRRF PROGRAM SUMMARY

90% Cost Model Total Bid Difference Plant Package #1 $149,638,872 $86,667,416*

  • $62,971,456

Plant Package #2 $78,855,987 TBD Plant Package #3 $54,109,694 TBD Plant Package #4 $83,932,978 TBD Pipeline Package $91,590,000 TBD Total Phase 1 Est: $458,127,530 $395,156,074

  • $62,971,456

*Bids are being evaluated by the CMAR and the final price will be included in the partial GMP#1 estimated for September 2020 award.

slide-39
SLIDE 39

39

FINANCIAL UPDATE

SISTER GROVE RWRRF PROGRAM SUMMARY

slide-40
SLIDE 40

40

FINANCIAL UPDATE

SISTER GROVE RWRRF PROGRAM SUMMARY

slide-41
SLIDE 41

41

FINANCIAL UPDATE

SISTER GROVE RWRRF PROGRAM SUMMARY

slide-42
SLIDE 42

Agenda

AGENDA

Discussion Items

  • C. Discuss Rowlett Creek Regional Wastewater Treatment Plant

Peak Flow Improvements, Phase II funding from Texas Water Development Board

42

slide-43
SLIDE 43

ROWLETT CREEK RWWTP PEAK FLOW PHASE II

43

Texas Water Development Board Funding

  • TWDB Clean Water State Revolving Fund application was submitted in

December 2019 for $84.3M total project cost

  • Estimated $59M construction cost based on preliminary engineering

report – Class 4 estimate (-30% / +50%)

  • Included

$10M program contingency for plan development, additional scope, and change orders

  • Currently construction cost estimate is $66.1M based on 60% plans for

solids improvements and 30% plans for liquids improvements

  • Increase due to project development, added replacement of aging

electrical gear and increased estimated overhead and profit to 15%

  • Risks that can impact cost going forward:
  • Additional scope, City of Plano platting requirements and fire

protection systems, unknown facilities and conflicts at a congested site, further plan development and design elements identified

slide-44
SLIDE 44

Agenda

AGENDA

Discussion Items

  • D. Opportunity for Committee members to provide feedback on

Wastewater Committee meeting

44

slide-45
SLIDE 45

CLICK TO EDIT MASTER TITLE STYLE AGENDA

Discussion Items

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

Adjournment

45