Water Partnering Meeting 9:30 am November 16, 2016 · 11/16/2016 · -3.08’ 84.9. Chapman. 15%. 440.0’ 436.76’-3.24’ 79.2. Tawakoni. 8%. 437.5’ 435.02 ... – 3rd Party

North Texas Municipal Water District“Regional Service Through Unity …

Meeting Our Region’s Needs Today and Tomorrow”

Water Partnering Meeting9:30 am

November 16, 2016

AgendaI. Water Supply Update - Billy GeorgeII. LBCR & Main Stem PS Permitting Update - Billy GeorgeIII. Water Rights & Availability Outlook - Billy GeorgeIV. Public Education Programs Update - Denise HickeyV. Public Relations Update – Amber FreelandVI. Upcoming Meetings - Billy George

AgendaI. Water Supply Update - Billy GeorgeII. LBCR & Main Stem PS Permitting Update - Billy GeorgeIII. Water Rights & Availability Outlook - Billy GeorgeIV. Public Education Programs Update - Denise HickeyV. Public Relations Update - Amber FreelandVI. Upcoming Meetings - Billy George

Reservoir Elevations – November 15, 2016

Reservoir

Conservation Pool

Elevation Current Elevation Up/Down % Full

Lavon30% 492.0’ 488.92’ -3.08’ 84.9

Chapman15% 440.0’ 436.76’ -3.24’ 79.2

Tawakoni8% 437.5’ 435.02’ -2.48’ 89.8

Texoma28% 617.0’ 618.48’ +1.48’ 100

Presenter

Presentation Notes

Values as of 11/15/2016 at 3:30 pm

Water Consumption


• Trinity River Main Stem Pump Station & Pipeline– Up to 100 MGD– 17 miles, 72-inch-diameter

pipeline– Add one pump at

Conveyance Pump Station– Cost approx. $120 million– Completion in 2018

MSPS, Pipeline & Permitting

MSPS, Pipeline & Permitting • Regional General Permit 12 (USACE 404 & 408 Permits):

– Received February 2016

• TRA’s TCEQ Water Rights Permit Amendment:

– Received October 19th 2016

• NTMWD’s TCEQ Bed & Banks Permit:

– Received October 20, 2016

• NTMWD Board Approved an agreement with Caroline Hunt Trust Estate Resulting in the Purchase of:– ~2,000 acre Wetlands

– 254 acres surrounding the Wetlands for maintenance purposes

– Pipeline easements on the CHTE property

Lower Bois d’Arc Creek Reservoir

Location: Fannin County, TXArea: 16,526 acresSupply: up to 108 MGDAverage/ Max Depth: 22/70 ftLake Elevation: 534 ft mslOwner & operator: NTMWDCost Estimate: ~$1.2B (2016 Dollars)

Permitting Required:• Water Rights – received June 2015• USACE Section 404 – under review

Anticipate federal permit in 2018with water delivery in 2022*

First major reservoir to be constructed in Texas in the last 30 years

*Final schedule dependent on permitting

• Reservoir expected to provide up to 108 MGD forNTMWD’s service area including Fannin County

• State Water Right Permit obtained in 2015

• CWA Section 404 permit pending

• USACE is the lead permitting agency

• Major threats to issuance of 404 Permit include:– USACE Denial– EPA Veto– 3rd Party Litigation


Presenter

Presentation Notes

Lower Bois d’Arc Creek Reservoir. Lower Bois d’Arc Creek Reservoir is a proposed reservoir on Bois d’Arc Creek in the Red River Basin. It was included in the 2001, 2006, and 2011 Region C Water Plans (1, 2, 3) as a supply for NTMWD. NTMWD is in the process of obtaining a Texas water right, a Section 404 permit, and other necessary permits for the project. Lower Bois d’Arc Creek Reservoir will provide up to 120,200 acre- feet per year for NTMWD and Fannin County. Lower Bois d’Arc Creek Reservoir will be developed by 2020. The supply shown for the lake in 2020 is limited to 15 MGD due to the anticipation that the lake will still be filling at that time. It is assumed that full filling will occur before 2030. The cost estimate for Lower Bois d’Arc Creek Reservoir includes not only the dam and reservoir, but also transmission facilities to deliver raw water to the proposed Leonard water treatment plant and to deliver treated water to District customers. The cost estimate for the Leonard treatment plant itself is included under NTWMD’s strategy of “Treatment and Distribution Improvements.”

• Work on the Draft Environmental Impact Statementcontinues Purpose and Need Statement

• Regular coordination meetings with USACE and EPA

• NTMWD submitted an updated mitigation plan forreview on November 15, 2016

• On track for early 2018 USACE permit decision withoutlegislative action


LBCR Proposed Mitigation• Riverby Ranch

– Wetland and Upland Mitigation

– Stream Mitigation

• Upper BDC Mitigation Site– Wetland Mitigation– Stream Mitigation

• Littoral Wetlands (shallow areas in lake)– Wetland Mitigation– Stream Mitigation

Upper Bois d’Arc Creek Mitigation Site• 1,900 acres of riverine

bottomlands

– 1,672 acres forested wetland mitigation

– 62,535 feet of streams

• 1,400 acres to acquire

• $6.5 M – Land Cost estimate

LBCR Proposed Mitigation

0

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

4,500

5,000

Impacts Mitigation Impacts Mitigation

Forested Wetlands(FCU)

Emergent/shrub Wetlands(HU)

Impacts Mitigation

0

50,000

100,000

150,000

200,000

250,000

Impacts Mitigation

Streams(SQU)

Wetland Mitigation Stream Mitigation


District Actions to Minimize Delays:• Water Resources Development

Act Amendment #5 included in current House of Representatives version

• Requires USACE permit decision by September 30, 2017 or a report to Congress

• Continued close coordination with federal permitting agencies

WRDA Amendment #5 Introduced by Rep. Sam Johnson

Co-Sponsors:Rep. Pete SessionsRep. John Ratcliffe

Rep. Eddie Bernice Johnson


2015 Water Demand & Supply Outlook

Original MSPS Schedule

February 2016 Demand & Supply Outlook

Current Demand & Supply Outlook

Working Definitions:• Water Right:

– Amount of paper water legally accessible from a water supply

• Water Available:– Amount of physical water in a water supply

• Firm Yield:– Amount of water available from a water supply over

the long-term• Water Accessible:

– Amount of water physically accessible from a water supply

Water Rights vs. Water Availability

• 2015 was the wettest year on record for the State of Texas

• Water sources are in good shape going into 2017

• NTMWD water 2017: – Water sources are generally full– DWU has delayed a new Lake Fork water

transport contract (Expired May 2016) rendering 20,000 acre-feet/year (ac-ft/yr) of NTMWD water inaccessible

Water Rights vs. Water Availability

Current Demand & Available Water Rights

2017 2018 2019Normal Year Demand 361,300 368,470 375,420 2013 CIP ProjectionsDry-Year Demand 401,430 409,390 417,120 2013 CIP Projections

Water Rights/Available Supplies

Lake Lavon 118,670 118,670 118,670 TCEQ water rightChapman 57,200 57,200 57,200 TCEQ water rightWilson Creek 46,300 46,630 46,970 Projected flowsEast Fork Wetland 40,920 41,250 41,700 Projected flowsTawakoni (Permanent) 11,100 11,100 11,100 Contract with SRAUpper Sabine Tawakoni Interim 20,000 20,000 20,000 No Lake Fork waterBonham 1,910 1,910 2,020 Bonham demandLake Texoma 68,830 69,170 69,500 Typical 4:1 BlendMSPS 0 9,342 56,050 Available Nov. 2018

Total Rights/Supplies - No Lake Fork

364,930 375,272 423,210

Normal-Year Supply Needed (3,630) (6,802) (47,790)Dry-Year Supply Needed 36,500 34,118 (6,090)

Demand and Water Rights/Supplies in Acre-Feet per Year Comments

Current Demand & Firm Supply OutlookBridging Effort Status

Store Imported Water in Lavon

Modified Lavon accounting plan approved

Additional Tawakoni SRA Water

Planning for additional 5,600 ac-ft/yr

New Dallas Lake Fork Transport Contract

Draft contract delivered September 2016 (20,000 ac-ft/yr)

3-Year Temporary Overdraft of Lavon

Submitted to TCEQMet with Dallas and Houston(109,070 ac-ft total)

Possible 3:1 Blend Texoma Water (4:1 typical) Possible IF infrastructure performs

• Application for 3-year overdraft of Lavon– Lavon water right: 118,670 ac-ft/yr– Application for additional 109,070 ac-ft over

three years (36,357 ac-ft/yr)– Application will be noticed with possible protests

from other basin-wide water right holders– Staff has met with Dallas and Houston in attempt

to minimize/avoid protests• Dallas Lake Fork water transport contract

– Working with Dallas staff on contract language– Planning on Dallas consideration during early

spring 2017

Current Demand & Firm Supply Outlook

• Increase blending of Texoma water (3:1 vs 4:1)


• Lavon Lake Surface Water Quality Standard (TCEQ) = 500 mg/La

• Secondary MCL (Safe Drinking Water Act)– Texas = 1000 mg/L

• NTMWD target for drinking water – ~ 600 mg/L (based on historical levels and

aesthetic issues)• WWTP discharges

– Based on surface water quality standard of receiving water


a Pending EPA approval

• TDS trends, WWTPs and Wylie WTP


• How fast can Texoma TDS increase?


0

200

400

600

800

1,000

1,200

1,400

1,600

1,800

1941 1945 1949 1953 1957 1961 1965 1969 1973 1977 1981 1985 1989 1993 1997 2001 2005 2009 2013

TDS (

mg/

L)

Historical Lake Texoma TDS Concentrations

Modeled Historical 7/6/2016 Concentration Apr 1981-Mar 1983 Supplemental Data

• Historic worst-case TDS model through end of 2018


0

100

200

300

400

500

600

700

800

900

1,000

1,100

1,200

1,300

1,400

1,500

Jan-2017 Apr-2017 Jul-2017 Oct-2017 Jan-2018 Apr-2018 Jul-2018 Oct-2018

TDS C

once

ntra

tion (

mg/L

)

Texoma Raw Water TDS Wylie WTP 3:1 Blend Wylie WTP 4:1 Blend

Lavon Raw Water 3:1 Blend Lavon Raw Water 4:1 Blend

• Action plan for TDS response at 3:1 blending of Texoma– Verify infrastructure can deliver 3:1 blend ratio– Increase monitoring of Wylie WTP TDS– Inform cities that blending has changed: request

cities notify affected industries– Reduce blending ratio when water rights /

availability allow


• So far, focus has been on maximizing water rights & how NTMWD is working to access additional water rights

• Now, we will focus on looking at projected water availability under different possible futures & developing an appropriate operating protocol


• Key modeling assumptions:– MSPS online end of 2018– After MSPS online, blend Texoma water at 3:1 only

when in Stage 2 or 3 restrictions– Maximize use of Lake Jim Chapman until MSPS

online– Store imported water in Lavon when available– Revise drought stage triggers to only look at Lavon


Lavon Stage 1 Stage 2 Stage 3Elevation (ft.) 481.5 477 473% Storage 55% 40% (typ 45%) 29% (typ 35%)

No- Operational Change Lavon Level Model

0%

5%

10%

15%

20%

25%

30%

465

470

475

480

485

490

495

Sep-

16

Dec-

16

Mar

-17

Jun-

17

Sep-

17

Dec-

17

Mar

-18

Jun-

18

Sep-

18

Dec-

18

Mar

-19

Jun-

19

Sep-

19

Dec-

19

Mar

-20

Jun-

20

Sep-

20

Dec-

20

Mar

-21

Jun-

21

Sep-

21

Dec-

21

Mar

-22

Jun-

22

Sep-

22

Perc

ent o

f Run

s in

Drou

ght S

tage

Lavo

n El

evat

ion

(feet

)

Lavon Elevation Statistics and Drought Stage Frequency -Baseline 1 - Baseline with Shortages

Number of Months with Shortages = 62

Stage 1 Frequency Stage 2 Frequency Stage 3 Frequency Minimum 5th Percentile 25th Percentile Median

Top of Conservation Pool

Stage 3 Trigger

Stage 2 Trigger

Elevation 467

Wet (50%)

Normal-Dry (25%) Dry

(20%)

Very Dry (5%)

Stage 1 Trigger

Shortages in 18 runs (24%). Occur in mostly dry years in 2017 and 2018. 4 runs have

shortages in 2020-2022. 2 of the runs have shortages in both time periods. Total of 62

months.

• Temporary overdraft of Lavon granted in 2017– 3:1 blending of Texoma water– Additional 5,600 ac-ft/yr from Tawakoni– 20,000 ac-ft/yr Lake Fork supplies– Temporary overdraft of Lavon granted


Temp Lavon Overdraft & Lake Fork Available Lavon Level Model

0%

5%

10%

15%

20%

25%

30%

465

470

475

480

485

490

495

Sep-

16

Dec-

16

Mar

-17

Jun-

17

Sep-

17

Dec-

17

Mar

-18

Jun-

18

Sep-

18

Dec-

18

Mar

-19

Jun-

19

Sep-

19

Dec-

19

Mar

-20

Jun-

20

Sep-

20

Dec-

20

Mar

-21

Jun-

21

Sep-

21

Dec-

21

Mar

-22

Jun-

22

Sep-

22

Perc

ent o

f Run

s in

Drou

ght S

tage

Lavo

n El

evat

ion

(feet

)

Lavon Elevation Statistics and Drought Stage Frequency -Scenario 5b - All Lake Fork + 3:1 with Temporary

Number of Months with Shortages = 0

Stage 1 Frequency Stage 2 Frequency Stage 3 Frequency Minimum 5th Percentile 25th Percentile Median

Top of Conservation Pool

Stage 3 Trigger

Stage 2 Trigger

Elevation 467

Wet (50%)

Normal-Dry (25%) Dry

(20%)

Very Dry (5%)

Stage 1 Trigger

Possible Demand & Available Water Rights

2017 2018 2019Normal Year Demand 361,300 368,470 375,420 2013 CIP ProjectionsDry-Year Demand 401,430 409,390 417,120 2013 CIP Projections

Water Rights/Available Supplies

Lake Lavon 118,670 118,670 118,670 TCEQ water rightChapman 57,200 57,200 57,200 TCEQ water rightWilson Creek 46,300 46,630 46,970 Projected flowsEast Fork Wetland 40,920 41,250 41,700 Projected flowsTawakoni (Permanent) 11,100 11,100 11,100 Contract with SRAUpper Sabine Tawakoni Interim 20,000 20,000 20,000 No Lake Fork waterBonham 1,910 1,910 2,020 Bonham demandLake Texoma 68,830 69,170 69,500 Typical 4:1 Blend3:1 Texoma Blend 12,330 12,330 12,330 Pipeline capacity limitMSPS 0 9,342 56,050 Available Nov. 20183:1 Texoma Blend (MSPS) 0 2,120 7,500 Available Nov. 2018Lake Fork Water Available 20,000 20,000 20,000 New Dallas Contract3:1 Texoma Blend (Lake Fork) 5,720 5,720 5,720

Total Rights/Supplies - With Lake Fork

402,980 415,442 468,760

Normal-Year Supply Needed (41,680) (46,972) (93,340)Dry-Year Supply Needed (1,550) (6,052) (51,640)

Demand and Water Rights/Supplies in Acre-Feet per Year Comments

• Bottom line– If 2017 and 2018 are not wet to normal years, the

likelihood of running short of water rights is significant– NTMWD should temporarily operate with more

aggressive restriction triggers to minimize probability ofentering stage restrictions

– Increasing blending of Texoma water to 3:1 can be doneduring 2017 and 2018 because of significant rains in2015…provided infrastructure works as intended

– Success with one of two efforts helps significantly:• Gaining access to NTMWD Lake Fork water• TCEQ granting 3-year temporary overdraft permit

for Lake Lavon


• Action plan– Update cities on water forecast– Operate drought stage restrictions under modified

triggers– Implement 3:1 blending of Texoma water on January 1,

2017 and reduce only when conditions allow– Store additional water in Lavon when possible– Continue to work with Dallas on Lake Fork transport

contract– Work with Trinity River Basin partners toward 3-year

Lavon overdraft permit– Monitor/model water availability and TDS continuously


Questions?


WaterMyYard.org11/15/2016 10/18/2016

Allen 247 245Farmersville 58 57Forney 88 86Garland 128 127McKinney 818 808Mesquite 295 295Plano 1,606 1,585Princeton 118 117Richardson 540 525Rockwall 213 212Royse City 47 46Wylie 337 327Wetland 2 2 Tawakoni 2 2 121 RDF 3 3

WMY Total 4,502 4,437

WaterMyYard Subscribers – 4,502Frisco WaterWise Subscribers – 18,353

NTMWD - WMY has 15 Weather Stations

12 Rain Gauge Systems

Customer SubscribersCash SUD - 3Melissa - 70Murphy – 88Sachse - 79Joining soon: Parker

2017 Dates Course Name Register with TWUA through the link provided:Jan 9-11 Basic Water Operations http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238098&mo=1&tDate=%7Bd%20%272017%2D01%2D12%27%7D

Jan 11-13 Basic Wastewater Operations http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238099&mo=1&tDate=%7Bd%20%272017%2D01%2D12%27%7D

Jan 30-Feb 1 Wastewater Collection http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238125&mo=1&tDate=%7Bd%20%272017%2D01%2D12%27%7D

Feb 1-3 Water Distribution http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238127&mo=2&tDate=%7Bd%20%272017%2D02%2D12%27%7D

Mar 6 -8 Pumps & Pumping http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238129&mo=3&tDate=%7Bd%20%272017%2D03%2D12%27%7D

Mar 8-10 Water Utilities Safety http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238130&mo=3&tDate=%7Bd%20%272017%2D03%2D12%27%7D

May 1-3 Ground Water Production http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238134&mo=5&tDate=%7Bd%20%272017%2D05%2D12%27%7D

May 3-5 CCC / CSI (Customer Service Inspector) http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238135&mo=5&tDate=%7Bd%20%272017%2D05%2D12%27%7D

Jun 26 -28 Water Utilities Management http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238138&mo=6&tDate=%7Bd%20%272017%2D06%2D12%27%7D

Jun 28-30 Wastewater Treatment http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238139&mo=6&tDate=%7Bd%20%272017%2D06%2D12%27%7D

Aug 7-9 Water Laboratory http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238392&mo=8&tDate=%7Bd%20%272017%2D08%2D31%27%7D

Aug 9-11 Chlorinator Maintenance http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238477&mo=8&tDate=%7Bd%20%272017%2D08%2D31%27%7D

Aug 28-30 Wastewater Laboratory http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238478&mo=8&tDate=%7Bd%20%272017%2D08%2D31%27%7D

Aug 30-Sep 1 CSI (Customer Service Inspector)/CCC http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238479&mo=8&tDate=%7Bd%20%272017%2D08%2D31%27%7D

Oct 2-4 Valve and Hydrant Maintenance http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238481&mo=10&tDate=%7Bd%20%272017%2D10%2D31%27%7D

Oct 4-6 Operation of Activated Sludge Plants http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238482&mo=10&tDate=%7Bd%20%272017%2D10%2D31%27%7D

Nov 1-3 Surface Water Production I http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238494&mo=11&tDate=%7Bd%20%272017%2D11%2D30%27%7D

Dec 4-6 Surface Water Production II http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238712&mo=12&tDate=%7Bd%20%272017%2D12%2D30%27%7D

Dec 6-8 Water Utilities Calculations http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238713&mo=12&tDate=%7Bd%20%272017%2D12%2D30%27%7D

2017 TWUA Licensing Classes in Wylie

http://twua.memberize.com/clubportal/EventDisplayNew.cfm?clubID=1715&EventID=238098&mo=1&tDate=%7Bd%20'2017-01-12'%7D



















CLASS LOCATION: City of Wylie Service Center 949 Hensley LaneBuilding 300 Wylie, TX 75098

IMPORTANT NOTE: The City of Wylie ordinances prohibit any type of tobacco use on city property (inside buildings or outside while on city property).

2017 TWUA Licensing Classes in Wylie


• Video Shoot– Journey of Water (Treatment/Delivery Process)– Who We Are (History/Services)– Planning for the Future (LBCR)

• Journey of Water Fact Sheet– Covers steps of treatment process– Includes operational stats– Posted on website fact sheets page

• News Stream eNewsletter– Second issue this week– Project Pipeline newsletter to launch in 2017– Subscribe at bottom of NTMWD homepage

Public Relations Update

Public Relations: Recent Events

• Oct. 20 - Tours for Member/Customer officials– Reps from Farmersville, McKinney, Princeton, Rockwall, Wylie

• Nov. 4 - 60th Anniversary Open House– Tours and displays for Member Cities and Customers– Media coverage in Dallas Morning News, Wylie News,

Kaufman Herald, Community Impact News - Plano

• Nov. 10 - H2O4TEXAS Tour & Region C Town Hall– Morning tour of Wylie plant, afternoon town hall meeting at

Collin College

Public Relations: Upcoming Events• Dec. 13 – Communications Committee

– 10:00 – 11:30 AM John and Judy Gay Library in McKinney

• Texas Water Development Board –2017 Water for Texas Conference

– January 23-25, 2017 – Austin, Texas – AT&T Executive Education and

Conference Center

• 2017 Water Treatment Plant Tours for Member City & Customer officials, staff

– Mar. 9– Jun. 9– Aug. 11– Oct. 12


49

NTMWD Water and Wastewater Partnering Meetings - Planning FeedbackBilly George and Jenna Covington

How would you categorize your current position? (Check all that apply.)

What would be your preferred frequency for Partnering Meetings? Water Wastewater

We will begin meeting bi-monthly in January 2017

Please indicate your responses to the statements below

Most agree the meeting length and content is appropriate and useful.

I have submitted requests for content to be included in the Partnering Meetings.

Partnering Meetings would be more valuable if…“We could hear a presentation each month from a Member City or Customer City representative. Sharing information is often the most valuable "take-a-way" from a meeting.”

2

32

2

32

What new content would you like to see in future Water Partnering Meetings?

• Earlier final budget numbers for rate increases / More frequent Finance/Budget Updates

• Success stories from other cities• Water conservation• New TCEQ regulatory issues affecting distribution systems / TCEQ's requirements

(thresholds) for Nitrites and such, what are their flushing recommendations, etc...• Updates on plant treatment process and possible affects on finished water. More

project updates• Updates on new raw water source development• More information on construction coordination for Cities building infrastructure across

or above NTMWD distribution mains.• More time allotted for open discussion and Q & A• Status of Biologically Active Filter installations. Very high flushing took place this year

and all that flushing water from Allen, Richardson, and Plano• Reporting potable water spills in accordance with requirements• What are other member/customer cities doing regarding water quality and flushing

What new content would you like to see in future Wastewater Partnering Meetings?

• Potential or upcoming regulatory changes• Public Outreach and Education, including grease abatement• I&I Solutions • Root and grease control methods• New technology for pipeline condition assessment• Flow monitoring (NTMWD and member/customer cities)• More finance/budget updates• Upcoming major plant expansions or new plants• Status of pending wastewater permit applications• Evaluations and comparison of certain technologies,

software, equipment, etc.

56

Discussion

2017 Meeting Dates

Upcoming Meetings

www.NTMWD.com Follow us on:

WED JAN 18WED MAR 15 WED MAY 17 WED JUL 19WED SEP 20WED NOV 15

DEC (no meeting)

Meeting Time:9:30 a.m.

Water Partnering MeetingWastewater Partnering Meeting

(immediately following last item in the Water Partnering Meeting)

11:30 a.m.Target Meeting End Time

atNORTH TEXAS MUNICIPAL WATER DISTRICT

ENGINEERING BUILDING TRAINING ROOM505 E. Brown Street, Wylie, TX 75098

RSVP through

Agenda• Announcements• Wilson Creek RWWTP Plant Spotlight

• Overview of Facility• Major Projects

• Headworks and Advanced Treatment• Expansion to 64 mgd

• Additional Wilson Creek RWWTP Projects

• Discussion

58

North Texas Municipal Water District“Regional Service Through Unity …

Meeting our Region’s Needs Today and Tomorrow”

Wastewater Partnering MeetingNovember 15, 2016

59

Agenda• Announcements• Wilson Creek RWWTP Plant Spotlight

• Overview of Facility• Major Projects

• Headworks and Advanced Treatment• Expansion to 64 mgd

• Additional Wilson Creek RWWTP Projects

• Discussion

60

Announcements• NTMWD Operator, Rey Davila,

selected to serve on the TCEQ WUOLAC (Water Utility Operator Licensing Advisory Committee).

• The committee reviews and makes recommendations to TCEQ staff on operator licensing testing and training requirements.

• Other Announcements?

61

62

Wilson Creek RWWTP Plant SpotlightJenna Covington

Wastewater Treatment Objectives• Protect public health and the environment

• Be compliant with regulatory requirements• Protection of Lavon Lake, primary water supply

• Enable economic development• Expand system to provide services to growing cities

• Operate efficiently to discharge high quality water at a reasonable rate

• Be a good neighbor• Minimize offsite odors

Wilson Creek RWWTP History• Wilson Creek Regional Wastewater Treatment Plant

(RWWTP) was initially placed in service in 1987 with a treatment capacity of 8 million gallons per day (MGD) and outfalls to Lavon Lake

• Continued growth in the service area resulted in plant expansions in 1988, 1996, 2004, and 2010

• The treatment plant currently serves the following member cities: Plano, Allen, Frisco, McKinney, Richardson, and Princeton

Wilson Creek RWWTP Facts• Currently, Wilson Creek RWWTP treats

approximately 18 billion gallons annually• All treated effluent flow is discharged directly into

Lake Lavon, our primary drinking water supply reservoir

• Wilson Creek WWTP’s discharge permit is among the strictest in Texas

67

• Major Trains• Plant 1, 32 mgd• Plant 2, 24 mgd• High Rate Clarification

• Treatment • Chemical• Biological• Physical

• Hydraulics• Gravity flow for main

liquids streams• Pumping for waste and

recycle streams

Plant 1

Plant 2

HRC

Overview

• Fine Bar Screens• Physical

• Grit Removal• Physical (Gravity)

Preliminary Treatment

• Primary Clarifier• Physical (Gravity) -

Solids settled and removed with rotating rake

Primary Treatment

• Aeration Basin• Biological - Build up

inventory of micro-organisms and let nature do it’s work

• Secondary Clarifier• Chemical- Chemical

binds with material to facilitate setteling

• Physical (Gravity) -Solids settled and removed with rotating rake

SecondaryTreatment

• Filters• Sand media

(Physical/gravity)• Cloth media

(physical)

TertiaryTreatment

• Physical• UV (Radiation)

• Chemical• Chlorination/

Dechlorination

DisinfectionTreatment

• Dry Weather• Polish water beyond

permit requirements

• Wet Weather• Additional peak flow

treatment capacity

• Clarifier overflow rate 50x conventional

Dual ModeHigh Rate Clarification

75

Influent Mixed Liquor Effluent

Wastewater is turned from waste to a valuable resource

Wastewater Treatment Plants are hospitals for water

Headworks and Advanced Treatment Improvements

• Expansion of Headworks• Second High Rate Clarifier Train

• 32 mgd peak flow treatment• Polishing of Plant 1 flows during

dry weather

• Additional 32 mgd UV Channel• Design Bid Build Delivery

77

Wilson Creek RWWTP Expansion• Adding an 8 MGD treatment train to Plant 2

• (2) 125-foot diameter primary clarifiers• A biological nutrient removal (BNR) basin • 135-foot diameter secondary clarifier• Cloth media filters • Ultraviolet (UV) disinfection channel• Dewatering capacity• Support components

• Construction Manager At-Risk (CMAR) delivery will provide:

• Contractor input on design, constructability, scheduling, and cost estimating

• Phasing to match funding and schedule

• Option to terminate if needed

Wilson Creek RWWTP LayoutHigh Rate Clarifier

& UV Channel

HeadworksExpansion

Bio Contact Tank

Wilson Creek RWWTP Capacity Phases

Phase of Permit

Average Capacity Peak 2-hr Capacity

Current 56 mgd 160 mgd

Advanced Treatment and Headworks

• Additional Capacity - 32 mgd

• Total Capacity 56 mgd 204 mgd

Expansion to 64 mgd

• Additional Capacity 8 mgd 20 mgd

• Total Capacity 64 mgd 224 mgd80

Additional Wilson Creek RWWTP Projects

Description Estimated Construction Cost

Start Construction

FinishConstruction

Filter Improvements $2,828,575 2014 2016

Solids Management Optimization & Control Improvements

$2,371,000 2015 2016

Electrical Improvements Phase 1A $594,120 2015 2016

Electrical Improvements Phase 1B $6,045,000 2016 2017

Advanced Treatment & Headworks Improvements

$43,840,800 2016 2018

Expansion to 64 MGD (CMAR) $44,000,000 2017 2019

Electrical Improvements Phase 2 $11,900,000 2018 2019

Maintenance Facility $3,610,000 2018 2019

Conceptual Evaluation Underway to Evaluate Where to Add Capacity Next

Preliminary Results Will Be Shared in Early 2017

Planning and engineering needs (e.g. phasing, costs)

Community Concerns (e.g. sludge hauling, siting concerns)

Customer Flows (e.g. service area, range of flows)

Solids process (landfill vs. digestion)WWTP restrictions/opportunities

(e.g. existing process/hydraulic limitations) Lake water quality/NPDES permit limitations

(e.g. tighter future TDS/Phosphorus limits)Operational concerns

(e.g. process selection, energy consumption)

83

Discussion

Documents

Water Partnering Meeting 9:30 am November 16, 2016 · 11/16/2016 · -3.08’ 84.9. Chapman. 15%. 440.0’ 436.76’-3.24’ 79.2. Tawakoni. 8%. 437.5’ 435.02 ... – 3rd Party