WASTEWATER COMMITTEE MEETING July 25, 2019 · 7/25/2019 · A. FY19 amended and FY20 preliminary budget briefing B. Update on Stewart Creek West Wastewater Treatment Plant ... 2016-2018

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

WASTEWATER COMMITTEE MEETING

July 25, 2019

CLICK TO EDIT MASTER TITLE STYLEAGENDA

ACTION ITEMSA. Consider Approval of Wastewater Committee meeting minutes – May

30, 2019B. Muddy Creek Wastewater Treatment Plant Master Plan Engineering

Services Agreement – Administrative Memorandum No. 5430Consider recommendation authorizing execution of engineeringservices agreement with Carollo Engineers, Inc., in the amount of$444,140 for Muddy Creek Wastewater Treatment Plant Master Plan

DISCUSSION ITEMSA. FY19 amended and FY20 preliminary budget briefingB. Update on Stewart Creek West Wastewater Treatment PlantC. Update on Town of Fairview Amendment to Regional Wastewater

Customer Service ContractD. Wilson Creek Regional Wastewater Treatment Plant Operations Staffing

Assessment and Capacity Assessment update

2


Opening Remarks

A. Chairman/Executive Director/Committee Champion StatusReport concerning legislation and regulatory matters, budgets,current projects and ongoing Wastewater System programs ofthe District

3

CHAIRMAN/EXECUTIVE DIRECTOR/COMMITTEE CHAMPION STATUS REPORT

4

• Wastewater Committee Chairman Selection of Vice Chairman

• Regulatory Update• Wilson Creek RWWTP

– Notice of Enforcement– Enforcement Review Meeting

• Upper Rowlett/Cottonwood Forcemain Sanitary Sewer Overflow (SSO)

UPPER ROWLETT/ COTTONWOOD FORCEMAIN SSO

5

• SSO occurred on 7/16/2019 associated with construction shutdown

• Piper joint separated near isolation valve spilling 200,000 gallons

• Approximately half contained on site and half flowed into Cottonwood Creek

• NTMWD and TCEQ evaluated the creek and found no environmental impact

• Press release issued and regulatory reporting complete

AgendaAGENDA

Action Items

A. Consider Approval of Wastewater Committee Meeting Minutes– May 30, 2019

Recommend Approval of Wastewater Committee Meeting Minutes

6

AgendaAGENDA

Action Items

B. Muddy Creek Wastewater Treatment Plant Master PlanEngineering Services Agreement – AdministrativeMemorandum No. 5430Consider recommendation authorizing execution of engineeringservices agreement with Carollo Engineers, Inc., in the amount of$444,140 for Muddy Creek Wastewater Treatment Plant MasterPlan

7

• Serves Cities ofWylie and Murphy

• Current Capacity: Average Annual Daily Flow (AADF) = 10mgdPeak 2 hour flow (P2HF)

= 30mgd

• Permitted to expand to 20mgd AADF/ 60mgd P2HF in 5mgd increments

• Current Projects– Odor Control Improvements and

Backup generator8

MUDDY CREEK WWTP MASTER PLANBackground Information

Muddy Creek WWTP

9

Project Scope

• Condition Assessment of all existing major assets– Assess condition down to each treatment unit level

• Evaluation of all Process Facilities– Develop hydraulic model and process model for various flow conditions

• Site Master Planning– Evaluate and recommend updates for future facilities

10

MUDDY CREEK WWTP EXPANSION MASTER PLANObjective: Develop comprehensive master plan for phased improvement projects to meet future capacity needs, facility upgrades, and regulatory requirements

AgendaRECOMMENDATION

11

Consultant: Carollo Engineers, Inc.

Scope: Master Plan

Project: No. 310-0536-19, Muddy Creek WastewaterTreatment Plant Master Plan

Amount: $444,140


Discussion Items

A. FY19 amended and FY20 preliminary budget briefing

12

WASTEWATER SYSTEM - BUDGET

13

WASTEWATER SYSTEM

REGIONAL WASTEWATER SYSTEM - BUDGET

14

REGIONAL WASTEWATER SYSTEM

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

15

REGIONAL WASTEWATER SYSTEM - BUDGETExpenditures by Category

$5

$10

$15

$20

$25

$30

$35

$40

Personnel Operating CapitalFY19 Bdgt $12.3 $29.1 $29.2FY19 Amnd $12.3 $28.9 $29.2FY20 Bdgt $13.3 $31.4 $32.0

Mill

ions Personnel:

+4 – Wilson Creek+2 – Rowlett Creek

0%

1% Decr

0%$41 M Bonds8%

Incr

8%Incr

10%Incr

$2 M Support Svcs Alloc$0.4 M Landfill Svc Fees

<$0.1 M> Escrow

<$0.45 M> CIP Fund Decr$3.2 M Debt Incr

$98 M Bonds

CLICK TO EDIT MASTER TITLE STYLEREGIONAL WASTEWATER SYSTEM - BUDGET

16

• FY20 Budget

o $2.75 M Increase to Capital. o $3.2 M Increase in debt service for ’20 bonds (Full Year) o <$.45 M> Decrease in transfer to Capital Improvements Fund

o $2 M Support Service Fund Impact Phase Io $1.8 M Indirect Support services expenses added to RWWS O&Mo $0.2 M Direct Support services expenses added to RWWS O&M

UPPER EAST FORK INTERCEPTOR SYSTEM - BUDGET

17

UPPER EAST FORK INTERCEPTOR SYSTEM

Allen, Frisco, McKinney, Melissa, Plano,

Princeton, Prosper and Richardson

18

UPPER EAST FORK INTERCEPTOR SYSTEM - BUDGETExpenditures by Category

$0

$5

$10

$15

$20

$25

$30


Mill

ions

5%Decr

1% Decr

0%

10%Incr

6%Incr

14%Incr

$1.2 M Support Svc Allocation$0.3 M Chemicals

<$0.1 M> Facilities Maintenance

Includes $51 M in Bonds

Includes $64 M in Bonds

CLICK TO EDIT MASTER TITLE STYLEUPPER EAST FORK INTERCEPTOR SYSTEM - BUDGET

19

• FY20 Budget

o $1.33 M Increase to Capital o $1.88 M Increase in debt service for ’19 bonds (Full Year) o <$0.55 M> Decrease in transfer to Capital Improvements Fund

o $1.4 M Increase to Operatingo $1.2 M Support Service Allocation Phase Io $0.3 M Chemicalso <$0.1 M> Facilities Maintenance

SEWER SYSTEM - BUDGET

20

SEWER SYSTEM

21

SEWER SYSTEM - BUDGETExpenditures by Category

$0

$5

$10

$15

$20

$25


Mill

ions

2%Decr

0%

0%

10%Incr

7%Decr

11%Incr

Personnel:+1 – Small Plants

+1 – Stewart Creek WWTP

$0.9 M Support Svcs Alloc$0.3 M Power

$0.2 M Capital Outlay$0.2 M Pipeline Maintenance

<$1.1 M> Panther Creek WWTP<$.5 M> Stewart Creek WWTP

CLICK TO EDIT MASTER TITLE STYLESEWER SYSTEM - BUDGET

22

• FY20 Budget

o $1.6 M Increase to Operating o $0.9 M Support Allocationo $0.3 M Powero $0.2 M Capital Outlayo $0.2 M Pipeline Maintenance

o $1.5 M Decrease to Capital o <$1.1 M> Panther Creek

Includes Frisco

o <$.5 M> Stewart Creek WWTP : Series 1998/2011 Bonds Paid OffIncludes Frisco

WASTEWATER SYSTEM - FY20 BOND ISSUES

23

11/2019 Buffalo Creek Interceptor $31 M• Buffalo Creek Interceptor Phase I

12/2019 Panther Creek Wastewater Treatment Plant $4 M• Expansion to 15 MGD – Design

02/2020 Regional Wastewater System $27 M• South Mesquite Solids Handling Improvements

02/2020 Upper East Fork Interceptor System $64 M• North McKinney Parallel Interceptor & McKinney-Prosper Transfer Sewer Phases I

& II

04/2020 Regional Wastewater System $71 M • Sister Grove Early Construction Package & Expansion Design

06/2020 Muddy Creek Wastewater Treatment Plant $8 M• Expansion to 15 MGD – Design

08/2020 Regional Wastewater System $63 M • Rowlett Creek Peak Flow Phase II


Discussion Items

B. Update on Stewart Creek West Wastewater Treatment Plant

24

STEWART CREEK WEST WWTP EXPANSION TO 10 MGD

25

Contract Summary

Schedule

• Original Completion: Dec 2017

• Revised Completion: Jan 2019

Cost

• Original: $60.4 Million

• Changes: $2.2 Million

• Revised: $62.7 Million

• Remaining Funds: $128K

• Retainage: $3.1 Million


26

Summary of Delays

• City contractors impact in 2015 & 2017 (111 days)

• Conflicts and other City requested changes– Plant drain pipelines and Lebanon Road Lift Station force mains into the plant in

2016-2018 (72 days)– Reuse line conflict with Influent PS in 2016 (50 days)

• Design error on filter influent line in June 2018—funded by consultant (111 days)

• MWH workforce abandonment, including key personnel, May 2018 (on-going)

• Fall 2018 rains revealed paving and drainage issues causing flooding in several buildings (on-going)

• Rusting was observed on walls of basins in April 2019. Insufficient concrete cover on rebar in the aeration basins, primary and secondary clarifiers (on-going)

LegendDrainage Issues Outside Buildings

Structures with Flooding Issues

Structures with Rebar Issues

Four

th A

rmy

Mem

oria

l

Aeration Basins

Aeration Basins Blower Building

Secondary Clarifiers

Administration Building Parking

Main Electrical Building

Primary Clarifier

Headworks

Solids Building

Solids Building Odor Control Area

Post-aeration Blower Building

RAS/WASPump Station

Influent Pump Station

STEWART CREEK WEST WWTP


28

Plan of Action

• MWH continuing to complete contract work and correct deficienciesrequired to start up the new plant (10 out of 249 items remain).

• Comprehensive paving and drainage plan being developed for review– Review, approval and completion of work by Fall 2019.

• Inspection results of rebar depths for each water bearing structureexpect to be complete by mid-August 2019. Repair recommendationscould include:

– Best case: Limit corrosion potential by applying a coating to thestructures. Completion estimated November 2019.

– Worst case: Reconstruct or pour additional wall thickness to restorestrength. Completion estimated February 2020.


29

Risk Mitigation

• Operation & Maintenance strategies for increased reliability: – Maximizing flow transfer to Panther Creek– Major Repairs

• Primary clarifier drive (completed)• Secondary clarifier rake arm (completed)

– Rebuilt or replaced miscellaneous equipment – Purchase of spare parts for critical equipment– Enhanced monitoring and proactive testing of various equipment

• Startup strategies to manage flows and treatment processes include:– Early use of the new Influent Pump Station, Filters, and UV system if

found to be acceptable for use– Alternate start-up strategies to allow one train to be placed in service

while repairs are completed on the other train


30

Questions


Discussion Items

C. Update on Town of Fairview Amendment to RegionalWastewater Customer Service Contract

31

TOWN OF FAIRVIEW WASTEWATER CUSTOMER CONTRACT

32

Background:

• Agreement for Customer Service with Fairview effective April 1, 1999 for 20 year term.

• Wastewater service to the Town of Fairview.

• Supplement No. 1 provide service to Heritage Ranch in Fairview;• effective on August 1, 1999 for 20 year term.

• Agreements Expire this year.

• Amendments make no changes to service or conditions, only extend existing agreements for a period of four (4) years.

• This action will come to August Board for approval following Fairview’s approval.

TOWN OF FAIRVIEW WASTEWATER CUSTOMER CONTRACT

33

Background:

• The original Agreement for Customer Service with Fairview wasexecuted and effective on April 1, 1999 for 20 year term.

• This Agreement provides for wastewater service to the Town ofFairview.

• The Supplement No. 1 to the Agreement for Customer Service withHeritage Ranch in Fairview was executed and effective on August 1,1999 for 20 year term.

• Both Agreements Expire this year.

• These Amendments makes no changes to service or conditions andonly extend the existing agreements for a period of four (4) years.

• This action will come to August Board for approval followingFairview’s approval.

AgendaAGENDA

Discussion Items

D. Wilson Creek Regional Wastewater Treatment Plant OperationsStaffing Assessment and Capacity Assessment update

34

WILSON CREEK REGIONAL WASTEWATER TREATMENT PLANT

35

• Communities Served: Allen, Anna, Fairview, Frisco, Lucas, McKinney, Melissa, Parker, Plano, Princeton, Prosper, Richardson• Fast growing area

• Capacity: 56 mgd (being expanded to 64 mgd)• 37% of NTMWD WWTP

Capacity

• FY 19 Dedicated O&M Positions: 48• 24% dedicated WW

O&M positions

• Discharges into Lavon Lake

Plant 1

Plant 2

HRC

Solids Processing

Headworks

ASSESSMENT OF OPERATIONS, STAFFING & CAPACITY IS ONGOING

36

• Three major tasks– Cove assessment and wetland treatment feasibility assessment– Improvements to increase reliability – facilities and practices– Staff organizational structure and numbers

• Staff organizational structure and numbers task expedited– Benchmarking – compared staff organization and count for plants similar size and

complexity– Evaluate plant leadership structure– Evaluate current workload for O&M of facilities– Compare existing resources to assist in optimizing to better serve customers and

protect environment

EVALUATION APPROACH AND OBSERVATIONS

37

General observations:– Lack of automation increases

labor requirements– Insufficient preventive

maintenance– Additional training needed– Benchmarking and peer

comparison clearly showed staff requirements for wastewater treatment is linear

Assessment:– Interviews with 32 staff

members– Conducted site inspections– Reviewed documentation– Benchmarking analysis– Peer utility survey

EVALUATION APPROACH AND OBSERVATIONS

38

BENCHMARKING RESULTS INDICATE ADDITIONAL POSITIONS NEEDED

39

All 6 Benchmarks Indicated Additional Staff Needed

Recommend 10 additional FTE’s for current capacity and 18 for 64 mgd

Exempt level position

EXISTING WILSON CREEK ORGANIZATIONAL CHART

40

Assistant Regional Wastewater System

Manager

*

*

* *

*

**

*

Exempt level positions

Maintenance Supervisor

Proposed new positions

PROPOSED FY 20 STAFF ADDITIONS

41


Manager

*

* *

*

**

*


*Exempt level positions



+1 Assistant Regional Wastewater System Manager

Will be responsible for Operations and Maintenance of the plant. This position will be responsible for performance management of the department, budget, and high level coordination with other District departments and external service providers.

Existing Plant Supervisor position will be able to focus on plant operations. This includes 48 personnel, still substantially more than any other WWTP Supervisor (33 is next largest WW department).

42


Manager

*

*

* *

*

**

*





+1 Maintenance Supervisor

In addition to overseeing maintenance staff assigned to department, Maintenance Supervisor will provide oversight to central maintenance personnel on Wilson Creek site and outsourced maintenance and repairs by 3rd

party companies.

43


Manager

*

*

* *

*

**

*





+2 Wastewater Plant Mechanic+1 Mechanic’s Assistant

Additional maintenance staff on site will allow additional preventive maintenance to occur, leading to fewer corrective maintenance requirements.

44


Manager

*

*

* *

*

**

*





+2 Wastewater Plant Operator

Additional operators to monitor the treatment process and do routine sampling, analysis, and daily operational duties for treatment equipment

45

ASSESSMENT OF OPERATIONS, STAFFING AND CAPACITY IS ONGOING

46

• Future updates to provide findings for other tasks– Cove assessment and wetland treatment feasibility assessment– Improvements to increase reliability – facilities and practices– Staff organizational structure and numbers

AgendaAGENDA

Discussion Items

E. Opportunity for Committee Members to Provide Feedback onWastewater Committee Meeting

47


Discussion Items

F. Opportunity for Committee Members to Request PotentialFuture Agenda Items(No substantive discussion of items will take place at this time)

Adjournment

48

Documents

WASTEWATER COMMITTEE MEETING July 25, 2019 · 7/25/2019 · A. FY19 amended and FY20 preliminary budget briefing B. Update on Stewart Creek West Wastewater Treatment Plant ... 2016-2018