Regional Service Through Unity… Meeting our Region’s Needs Today and Tomorrow NTMWD SPECIAL BOARD MEETING September 13, 2018
The Pledge of Allegiance to the Flag of the United States of America "I pledge allegiance to the Flag of the United States of America, and to the Republic for which it stands, one Nation under God, indivisible, with liberty and justice for all." The Pledge of Allegiance to the Texas State Flag "Honor the Texas flag; I pledge allegiance to thee, Texas, one state under God, one and indivisible."
72-INCH PIPELINE FAILURE AND REPAIR IN RICHARDSON, TEXAS Outline • Pipeline Background • NTMWD Operations Response • Environmental Impacts of Release • Outreach & Claims Response • Governmental Responsibilities & Liabilities • Public Comments • Executive Session: Consultation with Attorney
72-INCH PIPELINE FAILURE AND REPAIR IN RICHARDSON, TEXAS Outline • Pipeline Background • NTMWD Operations Response • Environmental Impacts of Release • Outreach & Claims Response • Governmental Responsibilities & Liabilities • Public Comments • Executive Session: Consultation with Attorney
NORTH GARLAND PIPELINE SYSTEM Prestressed Concrete Cylinder Pipe (PCCP)
NORTH GARLAND PIPELINE SYSTEM 2017
NORTH GARLAND PIPELINE SYSTEM 1995
NORTH GARLAND PIPELINE SYSTEM Dated 1998
PIPELINE BACKGROUND Embedded Cylinder - Prestressed Concrete Cylinder Pipe (EC-PCCP)
PIPELINE BACKGROUND 72” 60” Fabricated 1980 1966 (Section II) Designer Freese and Nichols, Inc. Forrest & Cotton, Inc. Manufacturer Gifford-Hill-American, Inc. Gifford-Hill-American, Inc. Type AWWA C301 PCCP AWWA C301 PCCP Contractor Cullum Construction A & A Construction Pressure Class 75 psi 100 psi Approx. Cover 7’ (1980) 4’ (1965) 19’ (1979) Life Expectancy 50-100 years* 50-100 years* *First PCCP manufactured in United States in 1953
72-INCH PIPELINE FAILURE AND REPAIR IN RICHARDSON, TEXAS Outline • Pipeline Background • NTMWD Operations Response • Outreach & Claims Response • Environmental Impacts of Release • Governmental Responsibilities & Liabilities • Public Comments • Executive Session: Consultation with Attorney
NTMWD OPERATIONS RESPONSE Thursday, August 30 th 2:50pm Richardson reports main break at 4517 Crystal Mountain Dr. Suspected to be in 60” main 3:24pm NTMWD personnel arrive on scene 3:30pm All North Garland Pumps de-energized 3:35pm Isolation of 60” main started 3:36pm NTMWD management notified 3:50pm Control Room notifies/updates Richardson & Garland staff 4:15pm Maintenance arrives on scene & Pump #9 started to verify broken transmission main 7:52pm NTMWD initiated investigation of break on 72” main 9:00pm Pipe manufacturer contacted 8:45pm Break confirmed on 72” main. Isolation of 72” began 9:30pm 72” main isolated and 60” placed into service 10:30pm Pipe exposed
NTMWD OPERATIONS RESPONSE Friday, August 31 st 4:25am Pipeline exposed, not completely excavated. Pipe manufacturer arrives on scene 11:00am Conference call with affected cities served noon NTMWD requested curtailment outdoor watering Saturday, September 1 st 2:00am Trench box installed 9:32am Daily Operations update e-mailed to affected cities 1:00pm 275-ton crane arrived 1:30pm Began removal of damaged pipe section 7:00pm Pipe preparation work for installation of new pipe begins 11:20pm First pipe section set
NTMWD OPERATIONS RESPONSE Sunday, September 2 nd 12:20am Second pipe section set 2:45am Pipe sections aligned and welding begins 9:29am Daily Operations update e-mailed to affected cities 4:00pm Welding finishes 5:00pm 72” pipe pressurized 5:20pm Leak observed at gasketed joint 9:45pm Welding begins to repair leak Monday, September 3 rd 9:53am Daily Operations update e-mailed to affected cities 3:20pm 72” pipe pressurized. No leaks observed 4:15pm 72” pipe returned to service 7:24pm NTMWD lifted outdoor watering curtailment request
NTMWD OPERATIONS RESPONSE Tuesday, September 4 th 11:24am Final Daily Operations update emailed to affected cities Grouting of pipe and cleanup begins Future Work Restoration of damaged paving, mail boxes and grass Drain 72” pipeline for installation of internal butt strap during winter Forensic investigations Internal inspections
72-INCH PIPELINE FAILURE AND REPAIR IN RICHARDSON, TEXAS Outline • Pipeline Background • NTMWD Operations Response • Environmental Impacts of Release • Outreach & Claims Response • Governmental Responsibilities & Liabilities • Public Comments • Executive Session: Consultation with Attorney
RELEASE OF WATER FROM 72-INCH WATER MAIN Environmental Impact of Release • 490 dead fish due to chlorinated water Date Collected Species Friday, 8/31 322 Various Saturday, 9/1 153 Various Sunday, 9/2 15 Various Monday, 9/3 0 Tuesday, 9/4 0 • Species include Bass, Carp, Catfish, Shad & Sunfish • Fish collected were disposed of at 121 RDF • No other impacts observed (Turtles, Birds, etc.) • Environmental impact reported to TCEQ
72-INCH PIPELINE FAILURE AND REPAIR IN RICHARDSON, TEXAS Outline • Pipeline Background • NTMWD Operations Response • Environmental Impacts of Release • Outreach & Claims Response • Governmental Responsibilities & Liabilities • Public Comments • Executive Session: Consultation with Attorney
72-INCH PIPELINE FAILURE AND REPAIR IN RICHARDSON, TEXAS Services/Goods Provided Cost Concrete Replacement Paving $343,708 Replacement Pipe $100,000* Excavator Rental $85,000* Landscape, Mail Boxes, Irrigation $50,000* Crane Services $45,682 2" Asphalt Cap Overlay $39,840 Total $664,230 Other Expenses To Include: Flowable Fill Tools, Trench Boxes, Etc. 8" Pump Rental Air Compressor Light Tower Subtotal: $31,365 Total Expenses $695,595 * indicates estimated amount Funds to be made available from the Regional Water System Contingency Fund 20
72-INCH PIPELINE FAILURE AND REPAIR IN RICHARDSON, TEXAS Reimburse Citizens - Estimate $20,000 Temporary lodging, meals, transportation and other related expenses Funds to be made available from the Regional Water System 2017-18 Operating Budget 21
72-INCH PIPELINE FAILURE– INFORMATION PROVIDED TO HOMEOWNERS August 30, 2018 (Thursday) A. The Executive Director and other senior staff canvassed the area impacted by the water main break. Residents of the impacted area were asked if they received water damage and/or were affected by power outages. B. Upon consultation with Members of the Executive Committee, a memo to “Residents of the Knolls at Breckinridge”, dated August 30, 2018, was provided to available residents or taped to the front door. In part, the memo provided the following: • NTMWD would reimburse residents for temporary lodging, transportation and meals for the next few days. • Recommendation for residents to contact their homeowners insurance. August 31, 2018 (Friday) A. The Executive Director and other senior staff revisited the impacted area, seeking additional information regarding the extent of damages. B. A second memo, dated August 31, 2018, to “Residents of the Knolls at Breckinridge”, provided the following: • Information regarding Texas Water Conservation Association Risk Management Fund (TWCARMF), NTMWD’s third–party administrator, and • Reimbursement procedures for temporary lodging, meals, transportation and other related expenses. 22
72-INCH PIPELINE FAILURE– INFORMATION PROVIDED TO HOMEOWNERS, continued September 1, 2018 (Saturday) A. Senior staff coordinated with TWCARMF personnel to review contact information and claims processing procedures for residents impacted by the water main break. September 2, 2018 (Sunday) A. Senior staff coordinated with TWCARMF personnel to ensure that voicemail messages were being checked regularly and return calls were being coordinated. September 3, 2018 (Monday-Labor Day) A. The Executive Director and other senior staff continued to meet and visit with homeowners, addressing concerns and encouraging homeowners to file claims against their homeowners insurance and also with the TWCARMF. September 4, 2018 (Tuesday) A. The Executive Director and other senior staff revisited the impacted area. B. A third memo, dated September 4, 2018, to “Residents of the Knolls at Breckinridge”, which provided detailed additional TWCARMF and NTMWD contact information. 23
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