Wet Weather Flow Management Project

Client

Sewer Authority Mid-Coastside

Location

EL GRANADA, CA

Project Description

SRT was contracted to provide conceptual engineering, permitting, design, and construction management for the Wet Weather Flow Management Project (WWFMP), which consisted of constructing six (6) 160-foot-long 72-inch diameter reinforced concrete storage pipes to temporarily store approximately 0.2 MG of excess wet weather sewage. The system was designed as a passive storage system, requiring no additional pumping, valves, or instrumentation controls.

Services provided included, but were not limited to: conducting a site survey, topographic mapping, Record of Survey, the Coastal Development Permit (CDP), detailed design and coordination, and engineering services during the bid period.

Unique Challenges

  • The WWFMP was constructed in the coastal zone of California, no more than 300 feet from the Pacific Ocean, which presents a significant challenge in permitting and keeping the project on schedule.

Value Added By SRT

SRT has a long history of design and construction work in coastal California and has important institutional knowledge of the California Coastal Commission process, ensuring that the WWFMP stayed on schedule and was operational for the next wet season.