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Wastewater Collection System Condition Assessment-Putting it all Together

April 26, 2018

Emerging or improving inspection technologies allow accurate wastewater collection system condition assessments to be performed without the liability of manned entry.  National Association of Sewer Service Companies (NASSCO) Pipeline Assessment Certification Program (PACP) and Manhole Assessment...

NBU Capital Improvement Program from $16M to $250M in Five Years Flat

April 25, 2018

Public utilities face many challenges as population grows and infrastructure ages, putting increasingly greater demands on utility staff to manage large capital improvement programs to meet resulting infrastructure needs. In rapidly growing Comal County, New Braunfels Utilities (NBU or Utility)...

Sewer Superhighway: Fast Track for a Large Diameter Consent Decree Pipeline

April 25, 2018

The San Antonio Metropolitan area has experienced sustained growth for decades, putting increased pressure on existing wastewater infrastructure. In June 2013, the San Antonio Water System (SAWS) approved a settlement agreement with the U.S. Environmental Protection Agency (EPA) that requires...

A Master Plan for Everyone: How a Small City Is Working With Developers to Provide Regional Wastewater Infrastructure

April 25, 2018

Master planning is an important practice for any city, and this is especially true for a city that is anticipating rapid growth. The City of Manvel, situated 20 miles from Houston near State Highway 288, is an example of a fast-growing city in northern Brazoria County. Developments have resulted...

EPA Consent Decree: Taming the Condition Monster

April 25, 2018

The San Antonio Water System (SAWS) is under a federal consent decree to reduce sewer overflows. This paper will describe how SAWSs infrastructure was inspected, rated, and rehabbed. It will also describe the tools created for SAWS to quickly rate their pipes and assign a rehab method.  ...

Design and Construction Best Practices for Utility Pipelines Near Dams

April 25, 2018

Dams and utility pipelines are both critical infrastructure that provide essential services to the public and can often be found in close proximity. Dams in Texas are regulated by the Texas Commission on Environmental Quality (TCEQ) due to the potential threat to public safety in the event of...

Pump it Up: Vertical or Horizontal Pump Station

April 25, 2018

Vertical turbine and horizontal split case centrifugal pumps are the most common types of pumps utilized in water applications. One of the first steps in pump station design is to determine what type of pump station best suits the system’s needs. The type of pump station sets the stage for the...

Innovative approach to calculate I/I for SSES study: City of Austin Case Study

April 25, 2018

The Austin Water ‘s (AW) Crosstown Tunnel wastewater collection system includes more than 1,460 miles of wastewater lines and serves the majority of the City of Austin north of Martin Luther King Jr. Boulevard. The Austin Water recognized the need to identify areas in their collection system...

Shrinking the Difference Between the Storms We Design for and the Storms We Get

April 25, 2018

The primary goal of a design storm is to be representative of actual rainfall patterns; missing this mark risks over or under designing capital improvements leading to biased and potentially costly decision-making.   By modifying two key rainfall characteristics, storm distribution and projected...

How Arlington Water Utilities is Utilizing Geomorphology to Protect Sanitary Sewer Mains from Creek Erosion

April 24, 2018

The City of Arlington has experienced tremendous population growth over the past 50 years, more than quadrupling in size since 1970. The rapid development and urbanization in the City and surrounding areas has impacted the watersheds and streams that flow through the City. The City has over 700...

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