專案說明: | The San Francisco Airport Commission (Airport Commission) proposes maintenance repairs and system improvements to the Mel Leong Treatment Plant – Sanitary Wastewater Treatment Plant at San Francisco International Airport (SFO or the Airport), including replacing electrical gear that is heavily corroded, constructing a new electrical room to house the electrical gear, replacing the dewatering systems, replacing the screening equipment at the headworks, and replacing equipment that is beyond its useful life associated with the sequencing batch reactor process. The purpose of the project is to replace equipment that is beyond its useful life or severely corroded and to make process improvements to ensure the necessary continued treatment of sanitary wastewater for the entire Airport property which includes passenger, tenant, and employee usage.
The Airport treats an average of 1.26 million gallons of wastewater per day (MGD) at the Mel Leong Treatment Plant (MLTP), which is the Airport’s independent wastewater treatment facility. The MLTP consists of two sub-facilities, the Sanitary Waste Treatment Plant (SWTP) and the Industrial Wastewater Treatment Plant (IWTP), on approximately 8.5 acres adjacent to the San Francisco Bay. Sanitary sewage at SFO is collected and treated on-site at the SWTP where solids are separated from the stream and the treated effluent is either used as reclaimed water or is treated further and is then pumped to the South San Francisco Wastewater Treatment Plant and discharged into the San Francisco Bay. The project would address four immediate needs for the SWTP including replacement of equipment beyond its useful life, replacement of electrical gear that is heavily corroded, and process improvements.
Excavation for the electrical room would be five to six feet in depth. The excavation for the headworks would be 10 to 15 feet in depth. Additionally, pile driving to support the new concrete pad for the new screening equipment would be up to 60 feet with 14-inch square piles. No roadways would be closed during construction. All excavation activities of the project would be conducted in accordance with federal, state, and local environmental and hazardous material management regulations. |
|