Conveyance

The backbone of any water system is the network of pumps, pipes and sewers that transmit and distribute drinking water and collect and convey wastewater to be treated. Unfortunately, much of this aging infrastructure is reaching a point of dangerous deterioration and, in many cases, has limited or no additional capacity. Failure of these systems can result in significant disruptions in service, property damage and serious public health consequences.

Challenges encountered in the rehabilitation of the Dorcester Brook Sewer, a 140-year old pile-supported horseshoe-shaped combined sewer, included a failing crown, heavy traffic load, and eight feet of cover.

For the upgrade and expansion of the 190-mgd (future 250-mgd) Deer Creek Raw Water Pumping Station in Baltimore (MD), our work included hydraulic and surge modeling of the pump station, rehabilitation of three existing pumps, install of a new horizontal split case raw water pump, and improvements to the raw water intake.

Hazen and Sawyer conducted inventory of and data collection for 3,000 miles of pressure pipes (both water and wastewater) in Hillsborough County, Florida. Based on our findings, we designed a software program to help the County assess and address its long term rehabilitation and replacement needs.

The Manhattan Pump Station design incorporates moving water as a theme, and provides an open, inviting building with large glass areas that allow the community to view operations. The project received an award for Excellence in Design from the Art Commission of the City of New York.

For Kentucky’s Sanitation District No. 1, Hazen and Sawyer prepared a comprehensive Pump Station, Force Main and ARV Preventative Maintenance Program as a result of our findings.

We completed planning, design, and construction management services for the 6-mgd Fork Swamp Regional and the 10-mgd Green Mill Run Wastewater Pumping Stations in Greenville (NC). The pumping facilities were constructed adjacent to residential and park lands and a portion of the pipeline encroached

Charlotte-Mecklenburg Utilities (NC) tasked Hazen and Sawyer with increasing its water supply capacity. The program entailed installing more than 25,000 LF of raw water piping.

The Port of Miami deepening project features the installation of an 1,800 LF, 24-inch horizontal directional drill water main and an 1,100 LF, 72-inch steel-lined microtunnel that carries a new 54-inch wastewater force main below the Port of Miami channel.

Whether it is assessing and rehabilitating existing assets or building new assets for needed capacity, we combine top technical know-how with innovative, informed, responsive service on conveyance projects of all scopes and sizes. Hazen and Sawyer’s extensive buried infrastructure capabilities are complemented by our award winning pump station design and construction management solutions, which have provided immediate operational benefits and long-term cost savings to clients nationwide.

Hazen and Sawyer experts have helped establish industry best practices and understand the finer points of the cost-effective conveyance of water better than anyone else in the industry, helping you successfully mitigate the risks of aging, failing infrastructure and the challenges associated with complex new construction. The result is reliable infrastructure, now and for years to come.

Our areas of focus and expertise include:

Asset management

Our asset management approach ensures that your infrastructure is thoroughly assessed and potential repair and rehab projects are properly prioritized. Our system integrates asset data from various sources (including GIS, CMMS, and SAP), ensuring unique identifiers across all assets and maintaining data quality.

Condition assessment

Our condition assessment module integrates a variety of field data, including gravity sewer inspections, manhole inspections, smoke test data and the sewer system overflows (SSO) database to ensure a comprehensive and accurate overview. Additionally, clients can import data from other sources (including CityWorks and MAXIMO) to assign work orders at an asset level and conduct risk analyses of proposed projects.

I/I studies

Our proprietary flow data analysis tool Hazen-Q incorporates automatic base flow patterns, automated storm event selection, rainfall statistics and data QA/QC to produce instant I/I stats

For inquiries contact:
Sean FitzGerald, PE at sfitzgerald@hazenandsawyer.com