| LEEI provided engineering design for
pretreatment, primary clarifiers, yard piping, civil infrastructure, and site
development. Included in our engineering services were planning, design
specification, the Final Design Report "executive Summary" and final design
check. LEEI also provided follow-up
engineering services during construction. The construction documents required four
volumes of specifications and 1400 sheets of design drawings by Intergraph computer-aided
drafting.
Special considerations were made in the design of the
Treatment Plant due to its location beneath the San Francisco Zoo and adjacent to the
Pacific Ocean. The Treatment Plant was designed to support 43 MGD of "Pure
oxygen" activated sludge with the hydraulic capacity of 65 MGD and required the
excavation of 600,000 cubic yards of soil, making it one of the few plants in the United
States built largely underground and the first with a zoo on its roof.
The Treatment Plant was presented two awards in 1993 for its
Treatment Program by the United States Environmental Protection Agency (USEPA) and
California Water Pollution Control Association (CWPCA). In 1994, the Plant received
two more awards for Engineering Excellence in the Design of the Wastewater Treatment Plant
by the Association Consulting Engineering Council (ACEC) and Civil Engineers and Land
Surveyors of California (CELSOC). |
Engineers
