David Stewart

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Heat Fusion Joining Inspector and Consultant David Stewart

Dave has over 40 years experience in the in the water and wastewater industry - one of the most experienced pipeline inspection consultants.  Under his leadership in 2009, the City of Lago Vista, Texas became the second city in the U.S. to switch over to using only HDPE pipe for all future water, wastewater, and reuse water new and replacement pipeline projects.  He came to the attention of the Plastic Pipe Institute (PPI) HDPE Municipal Advisory Board (MAB) and American Water Works Association (AWWA) Pipe and Fittings Standards Committee, Thermoplastics (Polyolefins) 263 Committee in 2015, and was invited to join both organizations.  Dave has contributed to 3 AWWA standards and 6 MAB manuals to date.

Having installed or supervised the construction of over 50 miles of HDPE water, wastewater and reuse water pipelines, Dave brings extensive knowledge and experience to jobsites installing HDPE pipe.

Experience
October 2019 – present
Stewart HDPE Consulting, LLC; Owner / Operator
Lago Vista, Texas
Expertise in:

• Design of HDPE water, wastewater, and reuse water distribution systems
• Open cut and road bore installation of HDPE pipelines
• Emergency repair of HDPE pipe damaged by third parties
• Onsite training of HDPE fusion crews
• Management of HDPE parts warehouses
  • Creation of computerized HDPE inventory control system
  • Establishment HDPE future construction shelf stock inventory levels
  • Establishment HDPE repair parts shelf stock inventory levels
• Inspection of onsite HDPE fusion projects
  • Novato Wetlands Restoration Project September – November 2020 (1,080’ of SDR17 63” HDPE bypass pipeline)

 
August 1986 – October 2020
City of Lago Vista, Texas,     
Lago Vista, Texas

• Managed on-going annual replacement program involving HDPE water lines.
• Managed & inspected the City's capital improvement projects.
• Managed & inspected the construction of the City's new subdivisions.
• Assisted project manager for development of the City's GIS utility mapping system.
• Assisted in the operations of the City's water & wastewater plants.
• Assisted in the operations of the City's water distribution system & wastewater collection system.
• Assisted in the operations of the City's Parks & Recreation Department.

 
Licenses

• McElroy OQ401 HDPE Fusion Inspector Training & Qualification Operator
• Certified HDPE Electrofusion Technician
• Certified HDPE Small Diameter Butt Fusion  Technician
• Certified HDPE Socket Fusion  Technician
• TCEQ Class B Surface Water Treatment Operator WS0005682   
• TCEQ Class A Wastewater Treatment Operator WW0013011  
• NSPF Certified Pool/Spa Operator 78-156253

 
 Professional Organizations

• Small Utility Representative Member on Plastic Pipe Institute (PPI) HDPE Municipal Advisory Board (MAB) April 2015 – Present
• American Water Works Association (AWWA) Pipe and Fittings Standards Committee, Thermoplastics (Polyolefins) 263 Committee October 2015 – Present
• American Water Works Association (AWWA) member October 2019 – Present
• Texas American Water Works Association (AWWA) member October 2019 - Present
• Jonestown Water Supply Corporation Board Director:   17 years, 11 months to date

Publications

• AWWA Polyethylene–Aluminum–Polyethylene (PE–AL–PE) Composite Pressure Pipe, 12 mm (½ In.) Through 51 mm (2 In.), for Water Service (C903-16)
• MAB Generic Electrofusion Procedure for Field Joining of 14 Inch to 30 Inch Polyethylene (PE) Pipe (MAB-02-2017)
• AWWA Polyethylene (PE) Pressure Pipe and Tubing, 3/4 In. (19 mm) Through 3 In. (76 mm), for Water Service (C901-17)
• MAB Basic HDPE Repair Options (MAB‐4‐2018)
• MAB Model Specifications for PE 4710 Buried Potable Water Service, Distribution and Transmission Pipes and Fittings (MAB-3 2019)
• MAB Guidelines for PE 4710 Pipe Bursting of Potable Water Mains (MAB-5-2019)
• MAB Guidelines for HDPE Pipeline Inspection (MAB-6 2020)
• AWWA M55 PE PIPE – Design and Installation, Second Edition (M55-20)
• MAB Mini-Horizontal Directional Drilling for Placement of HDPE (PE4710) Pipe in Municipal Applications (MAB-7 2021)
• AWWA C906-21 Polyethylene (PE) Pressure Pipe and Fittings, 4 In. Through 65 In. (100 mm Through 1,650 mm), for Waterworks AWWA C906-21 Polyethylene
  (PE) Pressure Pipe and Fittings, 4 In. Through 65 In. (100 mm Through 1,650 mm), for Waterworks
• MAB Guidelines for Fusing HDPE Pipe in Cold and Inclement Weather (MAB-82022) MAB
• MAB Generic Electrofusion Procedure for Field Joining of 12 Inch and Smaller Polyethylene (PE) Pipe (MAB-1 2022)

 
Honors

• Texas Commission for Environmental Quality (TCEQ) 2019 Texas Environmental Excellence Award:  "Ground Storage Tank Mixing and Trihalomethanes Removal Project".
• Texas American Water Works Association (TAWWA) 2017 Water Conservation and Reuse Award - Small Utility Direct.
• Save Texas Water 2017 Water Conservation Advisory Council  (WCAC) Blue Legacy Water Conservation Award.
• Texas Water Development Board (TWDB) 2017 Innovative Water Supply Award - Conservation Category.

 
Military Service

• FAAR Radar Platoon SGT 1972-74 (3/61st  ADA “Spearhead”), Honorable Discharge