Waste-Water Collection System Design

Getting it to the treatment facility is almost as important as treating it.  Representative projects completed by EarthFax have included:

DESIGN OF SEWAGE PRETREATMENT IMPROVEMENTS. EarthFax provided design and construction inspection services to a State prison to replace existing sewage pretreatment facilities. The overall goal of this project was to increase the capacity and efficiency of the existing sewage conveyance system. We evaluated existing facilities for flow capacity and losses, reviewed existing topographic mapping of the project site, evaluated existing geotechnical data to help identify the adequacy and usefulness of these data in designing system upgrades, evaluated sewage grinders and other pretreatment equipment that could meet project goals, addressed existing conditions and possible changes to existing features that would allow the sewage pretreatment system to grow with increased future demand, prepared final construction drawings in electronic format, participated in regularly scheduled progress meetings, and created final as-built drawings.

SANITARY SEWER OUTFALL SYSTEM DESIGN AND CONSTRUCTION SUPERVISION. Construction drawings and technical specifications for a major outfall sewer were prepared by EarthFax personnel for a municipality in Utah. Plan and profile design drawings were prepared for 3 miles of 18-inch through 60-inch diameter sanitary sewer. The project included the hydraulic modeling of the pipeline for sizing, design of manhole and siphon structures, evaluation of several pipe materials, determination of excavation and bedding requirements, performance of subsurface and groundwater investigations, and design of dewatering methods. Construction drawings and technical specifications were also prepared, along with right-of-way instruments and construction easements. Construction management and inspection were provided as part of the project.

EXPANSION OF EXISTING SANITARY AND STORM SEWER COLLECTION SYSTEMS. Numerous projects have been completed by EarthFax personnel for the extension of storm sewer collection systems within residential and industrial subdivisions in Utah. These projects include the identification of the location and sizing of existing storm sewer mains, submains, and branch lines, as well as the design of new submains and branch lines. Plan and profile drawings were developed along with specifications for the expansion of the existing systems. Construction management services were provided for several of the projects.

PREPARATION OF CONSTRUCTION STANDARDS AND SYSTEM DEVELOPMENT GUIDELINES. Construction standards and development guidelines were prepared by EarthFax personnel for a northern Utah municipality. Specifications in the CSI format and standard detail drawings for typical developmental improvements included trenching, concrete pipe, PVC pipe, clay pipe, cleanouts, lateral connections to mains, and cleaning/testing of gravity pipelines. These standards were compiled into a booklet for purchase by developers, contractors, and residents working within the city.