WATER COMMITTEE MEETING November 15, 2018 Agenda AGENDA II. - - PowerPoint PPT Presentation

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

WATER COMMITTEE MEETING

November 15, 2018

Agenda

AGENDA

II. OPENING REMARKS A. Executive Director/Committee Champion Status Report concerning legislation and regulatory matters, budgets, current projects and ongoing programs of the District including the Regional Water System, Watershed Protection, and Water Conservation III. ACTION ITEMS A. Consider Approval of Water Committee Meeting Minutes – October 25, 2018 B. Consider Recommendation on Authorizing Execution of Amendment No. 4 to Construction Manager At-Risk Agreement for Partial Guaranteed Maximum Price with Garney Companies, Inc., in the Amount of $88,171,760.50, Project No. 101-0424-16, Bois d’Arc Lake Raw Water Pipeline (Please refer to Administrative Memorandum No. 5290) C. Consider Recommendation on Authorizing Execution of Amendment No. 7 to Construction Manager At-Risk Agreement for Partial Guaranteed Maximum Price with Garney Companies, Inc., for Additional Funding in the Amount of $86,114,284.92, Establishment of Completion Dates, and Setting Liquidated Damages, Project No. 101-0358-14, Bois d’Arc Lake Raw Water Pump Station (Please refer to Administrative Memorandum No. 5293) D. Consider Recommendation on Authorizing Additional Funding in the Amount of $12,000,000 for Land Acquisition Program and Adoption of Resolution No. 18-56 Authorizing the Use of Eminent Domain to Acquire all Property Necessary for Bois d’Arc Lake, Project No. 101-0120-07, and Delegating Authority to Initiate Condemnation Proceedings to NTMWD Executive Director (Please refer to Administrative Memorandum No. 5288) E. Consider Recommendation on Authorizing Change Order No. 1 with RES Texas Mitigation, LLC, for a Decrease in the Amount of $454,003 and Adoption of Resolution No. 18-54 Authorizing the Acquisition of Approximately 388.9 Acres of Property for Purposes of Required Mitigation Related to Construction of Project No. 101-0366-14, Bois d’Arc Lake Mitigation Property (Please refer to Administrative Memorandum No. 5291) F. Consider Recommendation on Authorizing Execution of Engineering Services Agreement with Pure Technologies US, Inc., in the Amount of $2,698,642 for Condition Assessment Services of the 60-Inch and 72-Inch North Garland Pipelines, Project No. 101-0519-18, North Garland Pipelines Condition Assessment (Please refer to Administrative Memorandum No. 5292) G. Consider Recommendation on Authorizing Execution of Engineering Services Agreement with Kimley-Horn & Associates, Inc., in the Amount of $442,074 for Engineering Design on Project No. 101-0520-18, Wylie Water Treatment Plant III, Plant Water Improvements (Please refer to Administrative Memorandum No. 5287) H. Consider Recommendation on Authorizing Execution of Amended and Restated Potable Water Supply Contract with the Town of Prosper (Please refer to Administrative Memorandum No. 5289) IV. DISCUSSION ITEMS A. 2018 Water Quality Study Findings and Recommendations B. Internal Audit Findings of Wylie Water Treatment Plant Complex C. Liquid Ammonium Sulfate Conversion of Wylie Water Treatment Plant D. Limitations on Conveyance and Use of Lake Texoma Water E. Opportunity for Committee Members to Provide Feedback on Water Committee Meeting F. Opportunity for Committee Members to Request Potential Future Agenda Items (No substantive discussion of items will take place at this time) V. ADJOURNMENT

Agenda

AGENDA

Opening Remarks

• A. Executive

Director/Committee Champion Status Report concerning legislation and regulatory matters, budgets, current projects and

• ngoing

programs

• f

the District including the Regional Water System, Watershed Protection, and Water Conservation

Agenda

AGENDA

Action Items

A. Consider Approval of Water Committee Meeting Minutes – October 25, 2018 Recommend Approval of Water Committee Meeting Minutes

Action Items

B. Consider Recommendation

• n

Authorizing Execution

• f

Amendment No. 4 to Construction Manager At-Risk Agreement for Partial Guaranteed Maximum Price with Garney Companies, Inc., in the Amount of $88,171,760.50, Project No. 101-0424-16, Bois d’Arc Lake Raw Water Pipeline (Please refer to Administrative Memorandum No. 5290)

AGENDA

Authorize funding to purchase materials and appurtenances required for the construction of approximately 36 miles of 90-inch pipe from the Bois d’Arc Lake to the Leonard Water Treatment Plant.

Raw Water Pipeline - Alignment Map

Draft Fannin Co. Agreement

Raw Water Pipeline Partial GMP No. 1

CMAR 5 PROJECT APPROACH

GMP 1

• Pipe Material
• Appurtenances
• Butterfly valves
• Air release valves
• Gate valves
• Fittings

GMP 2

• Right-of-way

preparation

• Clearing
• Grubbing
• SWPPP
• Segments A, B, C

GMP 3

• Construction Work
• Segments A, B, C

Draft Fannin Co. Agreement

Raw Water Pipeline - Partial GMP No. 1 Material Procurement

CMAR 5 AMENDMENT NO. 4 - GARNEY

Description Selected bidder Large Diameter Pipeline Segment A – Northwest Pipe Segment B – Northwest Pipe Segment C – Thompson Pipe Group Butterfly Valves Supplier: Municipal Valve Equipment: Crispin KFlo Air Release Valves Supplier: International Valve Equipment: Vent-Tech Gate Valves – Small diameter Supplier: Ferguson Water Works Equipment: Mueller Company

CMAR 5 AMENDMENT NO. 4 – GARNEY

RAW WATER PIPELINE

PARTIAL GMP NO. 1

PRICE

Construction Cost

$81,527,286.64

General Conditions

$4,076,364.33

Construction Services Fee

$1,712,073.02

Contingency

$856,036.51

Total Board Approval - Ad Memo 5290

$88,171,760.50

RECOMMENDATION

Action Items

C. Consider Recommendation

• n

Authorizing Execution

• f

Amendment No. 7 to Construction Manager At-Risk Agreement for Partial Guaranteed Maximum Price with Garney Companies, Inc., for Additional Funding in the Amount

• f

$86,114,284.92, Establishment

• f

Completion Dates, and Setting Liquidated Damages, Project No. 101-0358- 14, Bois d’Arc Lake Raw Water Pump Station (Please refer to Administrative Memorandum No. 5293)

AGENDA

Authorize funding for the construction of the Raw Water Pump Station to facilitate conveyance of water from Bois d’Arc Lake to the Leonard Water Treatment Plant.

CMAR 3 PARTIAL GUARANTEED MAXIMUM PRICE (GMP) NO. 3

AMENDMENT NO. 7 FOR CMAR 3 (Garney Companies, Inc.)

GMP (Partial or Full) Cost of Work CMAR Construction Services Fee (% of Cost of Work) CMAR Pre-Construction & Procurement Fees Construction Cost (Estimated + Bids) General Conditions (% of Construction Cost) CMAR Contingency (% of Cost of Work) Partial GMP No. 1 (Early Work) Partial GMP No. 2 (LWTP) Remainder (Not Bid) HSPS & Dam Maintenance Facility Partial GMP No. 3 (RWPS) Total Contract Price (to date)

Draft Fannin Co. Agreement

Raw Water Pump Station Procurement

CMAR 3 PARTIAL GMP NO. 3 - GARNEY

Description Selected bidder Instrumentation and Controls Prime Controls Horizontal Centrifugal Pumps Xylem Medium Voltage Adjustable Frequency Drives (AFDs) Rockwell Automation RWPS Construction Archer Western

CMAR 3 PARTIAL GMP NO. 3 – GARNEY

RAW WATER PUMP STATION

AMENDMENT NO. 7

PRICE

Construction Cost

$78,873,681.00

General Conditions

$4,732,420.86

Construction Services Fee

$1,672,122.04

Contingency

$836,061.02

Total Board Approval - Ad Memo 5293

$86,114,284.92

Raw Water Pump Station - Floor Plan

DIMENSIONS/CAPACITIES: 104’ W x 353’ L x 100’ D 4-foot and 3-foot walls; 3-foot slab 236 MGD Ultimate Capacity; 72 MGD Initial Capacity

RECOMMENDATION

Action Items

• D. Consider

Recommendation

• n

Authorizing Additional Funding in the Amount of $12,000,000 for Land Acquisition Program and Adoption of Resolution No. 18-56 Authorizing the Use of Eminent Domain to Acquire all Property Necessary for Bois d’Arc Lake, Project No. 101-0120-07, and Delegating Authority to Initiate Condemnation Proceedings to NTMWD Executive Director (Please refer to Administrative Memorandum No. 5288)

AGENDA

Authorize additional funding and the use of eminent domain to acquire all property needed for the construction, operation and maintenance of Bois d’Arc Lake and associated facilities

BDL LAND ACQUISITION PROGRAM

• 24,000 acres of property are required for Bois d’Arc Lake – 296

parcels

• 19,500 acres has been obtained through voluntary negotiations

with willing sellers – 235 parcels

• Remaining properties have been prioritized to support the

construction schedule

• Negotiated for right-of-entries
• Use of eminent domain may be required for those that cannot be

acquired through negotiations

• Funding is needed in addition to previously Board authorized

amount of $59,293,501

• LIVE DEMONSTRATION OF BDL PROPERTIES IN GIS

RECOMMENDATION

Action Items

E. Consider Recommendation on Authorizing Change Order No. 1 with RES Texas Mitigation, LLC, for a Decrease in the Amount of $454,003 and Adoption of Resolution No. 18-54 Authorizing the Acquisition of Approximately 388.9 Acres of Property for Purposes of Required Mitigation Related to Construction of Project No. 101-0366-14, Bois d’Arc Lake Mitigation Property (Please refer to Administrative Memorandum No. 5291)

AGENDA

Authorize the purchase of property from RES Texas Mitigation, LLC, adjacent to Riverby Ranch, to exercise the alternate land option provision in the executed agreement as approved by the Board of Directors at the July 2018 meeting.

BDL MITIGATION FSP ADDITIONAL ACREAGE OPTION #1

NTMWD-Owned Additional Mitigation Areas (in red)

BDL MITIGATION FSP ADDITIONAL ACREAGE OPTION #2

NTMWD-Owned Tract (Grasslands Only) General Area of RES Optioned Site

CLICK T TO EDIT T MASTER TER T TITLE E ST STYLE

• Options to address additional acreage
• Option 1 –NTMWD-owned properties
• RES price to mitigate = $9,759,869
• Properties are smaller and dispersed resulting in much higher costs
• Not-to-exceed amount of $135,997,990 (approved by Board in July 2018)
• Option 2 – RES-owned property + NTWMD property
• RES price to mitigate = $9,305,866 (includes property cost)
• Cost to mitigate is less since it’s mostly adjacent to Riverby Ranch
• Total cost of $135,543,987
• Change Order No. 1 decrease amount of $454,003 and purchase of

RES-owned property

BDL MITIGATION FSP ADDITIONAL ACREAGE OPTIONS

RECOMMENDATION

Action Items

F. Consider Recommendation

• n

Authorizing Execution

• f

Engineering Services Agreement with Pure Technologies US, Inc., in the Amount of $2,698,642 for Condition Assessment Services of the 60-Inch and 72-Inch North Garland Pipelines, Project No. 101-0519-18, North Garland Pipelines Condition Assessment (Please refer to Administrative Memorandum No. 5292)

AGENDA

PURPOSE OF THIS ACTION

• August 30, 2018, 72” water main failure was first

significant failure of the piping system

• Engineering services by Pure Technologies to

assess condition of 72” and 60” North Garland Pipelines

• Use specialized tools to assess leaks and internal

condition

AWWA CC301 PCCP

Embedded Cylinder - Prestressed Concrete Cylinder Pipe (EC-PCCP)

SMART BALL – LEAK DETECTION

PIPE DIVER TOOL – INTERNAL WIRE

RECOMMENDATION

Action Items

• G. Consider

Recommendation

• n

Authorizing Execution

• f

Engineering Services Agreement with Kimley-Horn & Associates, Inc., in the Amount of $442,074 for Engineering Design on Project No. 101-0520-18, Wylie Water Treatment Plant III, Plant Water Improvements (Please refer to Administrative Memorandum No. 5287)

AGENDA

PURPOSE

• Engineering Services Agreement for WT Plant III

Plant Water System Improvements

• Improve flow for fire protection
• Improve flow/pressure throughout for process

uses

• Facilitate sectional isolation
• Dedicated chlorine injection pumps (not connected

to plant water system)

BACKGROUND

• Plant water system developed in stages over

several years

• Evaluation by HDR provided general

recommendations

• Approximately 4,000 linear feet of pipe ranging 4-

inch to 16-inch

• Need to verify existing pipes and connections in

certain areas

RECOMMENDATION

Action Items

H. Consider Recommendation on Authorizing Execution of Amended and Restated Potable Water Supply Contract with the Town of Prosper (Please refer to Administrative Memorandum No. 5289)

AGENDA

TOWN OF PROSPER RESTATED POTABLE WATER CONTRACT

• July 24, 2014, NTMWD and Prosper entered into a Potable Water

Supply using the new customer contract provisions.

• Prosper exceeded its Annual Maximum in water year 2018, which

requires Prosper to negotiate and enter into an amended and restated contract to increase the Annual Maximum.

• NTMWD and Prosper amending and restating the Original Contract to

update the new Annual Maximum set by Prosper’s 5 year population projections.

• Contract Term 20 years.
• Annual Maximum of not to exceed 2,650,000,000 gallons during any

water years.

• Water Year 2019 Annual Minimum 1,712,581,000 gallons.
• This contract will come to Board in November for approval.

RECOMMENDATION

AGENDA

Discussion Items

A. 2018 Water Quality Study Findings and Recommendations

Purpose & Introductions

Evaluations and Studies Developed three scopes of work:

• CDM Smith

― Water quality data review (2015-2018) ― Possible additional water quality sampling ― Bench scale testing for DBP formation ― Evaluate chlorine dosing ― Comprehensive look at transmission system quality program

• Carollo

― BAF implementation schedule and outcomes ― Technical feasibility and costs of GAC ― Current and planned ammonia dosing locations

• FNI

― Best practices toolbox for cities

NTMWD TRANSMISSION SYSTEM MEETING NTMWD TRANSMISSION SYSTEM MEETING

Purpose & Introductions

CDM Smith and FNI conducted a review of operational and water quality data from 2018 free chlorine maintenance period

• Compared 2018 data to previous three years (2015-2018)
• Water Quality Parameters:

― Temperature ― Total Organic Carbon ― UV 254 ― Turbidity ― pH ― Alkalinity ― Iron ― Manganese ― Total trihalomethanes ― Chlorine residual

2018 MAINTENANCE PERIOD DATA REVIEW

• Operating Data:

― Flow (raw and treated) ― Raw water source utilization and lake levels ― Wylie WTP operating scheme and chemical doses

Purpose & Introductions

KEY TAKEAWAYS The following parameters were NOT noticeably different at the Wylie WTP in 2018 than the previous three years:

• Raw and finished water

flows

• Raw and finished water

quality

• Overall Wylie WTP

treatment scheme

Some chemical doses at the plant varied, but these did not impact finished water quality

Purpose & Introductions

Wylie WTP High Service Pump Station chlorine residual values are consistent with previous years TRANSMISSION SYSTEM CHLORINE RESIDUALS

Purpose & Introductions

TRANSMISSION SYSTEM CHLORINE RESIDUALS

1 2 3 4 5 6

Chlorine Residual (mg/L)

Cl2 Residuals at Reservoirs During Maintenance Periods

2015 2016 2017 2018

However, chlorine residual at some reservoirs were slightly higher

Purpose & Introductions

DISTRIBUTION SYSTEM CHLORINE RESIDUALS

* = single-day samples

Purpose & Introductions

2018 MAINTENANCE PERIOD DATA REVIEW Theory regarding 2018 free chlorine maintenance period complaints

• Breakpoint chlorination resulting

in the formation of dichloramine and trichloramine species

• Di- and trichloramine can

create taste and odor issues at low levels

• The interface of the free

chlorine and chloraminated waters is where the highest potential for speciation and resultant taste/odor issues

• ccur

Purpose & Introductions

Daily water consumption and rainfall

• Rainfall event at beginning of

maintenance period temporarily reduced water demands 2018 MAINTENANCE PERIOD DATA REVIEW

Purpose & Introductions

Summary of data review:

• Some chemical doses at the plant varied, but

finished water quality in 2018 was comparable to previous years

• Chlorine residuals leaving Wylie WTP were

very similar to previous years, but slightly higher residuals were noted in some delivery reservoirs

• Rainfall event at beginning of maintenance

period temporarily reduced demand

• Difference between free and total residual

chlorine indicates probable speciation, which can impact taste and odor

• Findings consistent with TCEQ report

2018 MAINTENANCE PERIOD DATA REVIEW

WATER QUALITY BEST PRACTICES Worked with FNI to develop “Best Practices” reference materials for distribution system operations (Water Quality Focused) Technical memorandum

• Memo provides a high-level overview of transmission and

distribution system best practices for managing water quality

• Intended to be a resource for implementing and coordinating water

quality related activities

• Initial draft can be expanded or updated to address key subject

matter areas, as needed One-page summaries

• Reference documents which can be used to educate distribution

system staff and public about key water quality ‘Best Practices’

WATER QUALITY BEST PRACTICES Summary of recommended best practices:

• Enhanced sampling
• Spatial and temporal data trending
• Chlorine maintenance operations
• Hydraulic modeling
• Tank mixing
• Supplemental disinfection
• Infrastructure planning
• Asset management
• Nitrification management
• Pipeline material considerations
• General operational modifications

2019 FREE CHLORINE LOOK AHEAD

• Scheduled for: March 4, 2019 – April 1, 2019
• Key Dates:

November 14, 2018: Partnering Meeting November 14, 2018: Communications Committee Meeting January 14, 2019: Plano City Council Meeting January 16, 2019: Partnering Meeting January 16, 2019: Communications Committee Meeting January 24, 2019: NTMWD Board Meeting

• Authorizes a government body to consult with its attorney in an

Executive Session to seek advice on legal matters regarding pending

• r contemplated litigation or a settlement offer.
• A government body may not invoke this Section to convene a closed

session and then discuss matters outside of that provision.

• General discussion of policy, unrelated to legal matters, is not

permitted under the language merely because an attorney is present.

• Items discussed during consultation with the District’s attorney are

privileged and should remain confidential.

EXECUTIVE SESSION

Section 551.071, Consultation with Attorney

AGENDA

Discussion Items

• B. Internal Audit Findings of Wylie Water Treatment Plant Complex

AGENDA

Discussion Items

C. Liquid Ammonium Sulfate Conversion of Wylie Water Treatment Plant

Adjourn Executive Session

PROJECT PURPOSE AND DRIVERS

• Complete critical improvements to existing anhydrous

ammonia storage tanks

• Develop detailed design for conversion of Wylie WTP’s to

LAS

• Achieve common technologies and practices for ammonia

systems throughout the District

• Drivers:
• Regulatory compliance
• Safety
• Asset condition

PROJECT BACKGROUND

• Preliminary Engineering Services authorized to HDR in April

2018

• Completed a weighted criteria comparison for anhydrous

ammonia (current system) vs. liquid ammonium sulfate (LAS) at Wylie WTP’s

• LAS is currently in use at NTMWD’s Bonham and Tawakoni

WTP’s, and will be implemented at the Leonard WTP

• Recommendation to convert Wylie WTP’s to LAS

AGENDA

Discussion Items

• D. Limitations on Conveyance and Use of Lake Texoma Water

AGENDA

Discussion Items

E. Opportunity for Committee Members to Provide Feedback on Water Committee Meeting

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