Overview
PG&E R-309B, L-107 PIPE LOC is a gas pipeline facility in Fremont, California, operated by Pacific Gas and Electric Company. It is part of the natural gas distribution network serving the San Francisco Bay Area.
PG&E R-309B, L-107 PIPE LOC is a natural gas pipeline facility located in Fremont, Alameda County, California. It is part of the extensive pipeline infrastructure operated by Pacific Gas and Electric Company (PG&E), one of the largest combined natural gas and electric utilities in the United States. The facility is situated in a densely populated region of the San Francisco Bay Area, serving residential, commercial, and industrial customers. The pipeline operates under the regulatory oversight of the Pipeline and Hazardous Materials Safety Administration (PHMSA) and the California Public Utilities Commission (CPUC), which enforce safety standards under 49 CFR Part 192 for gas pipelines. PG&E's pipeline system includes thousands of miles of transmission and distribution lines, with cathodic protection systems to prevent corrosion. The facility's NAICS code 486210 indicates it is classified as a natural gas pipeline transportation system. This pipeline segment plays a critical role in delivering natural gas to the Fremont area and surrounding communities. Its proximity to urban development and major transportation corridors requires rigorous safety monitoring and maintenance. PG&E has implemented leak detection programs and emergency response plans to ensure reliable and safe gas delivery. The facility contributes to the region's energy infrastructure, supporting heating, power generation, and industrial processes.
Environmental context
The pipeline traverses an urbanized area of the San Francisco Bay, near sensitive ecosystems such as wetlands and waterways. Proximity to populated areas and the potential for leaks or ruptures pose risks to public safety and the environment. Cathodic protection and regular inspections are critical to prevent corrosion-related failures. The commodity transported (natural gas) is a greenhouse gas when released, so methane leak detection is a key environmental concern.
Frequently asked questions
The facility is located in Fremont, Alameda County, California, United States, with coordinates approximately 37.575179 N, -122.034665 W.
It is a natural gas pipeline facility that transports natural gas as part of PG&E's distribution network, serving customers in the Fremont area and the broader San Francisco Bay region.
The pipeline is regulated by the U.S. Pipeline and Hazardous Materials Safety Administration (PHMSA) under 49 CFR Part 192 for gas pipelines, and by the California Public Utilities Commission (CPUC).
Safety measures include cathodic protection to prevent corrosion, regular leak detection surveys, pressure testing, and emergency response plans. Operators must comply with PHMSA integrity management rules for high-consequence areas.
Natural gas pipelines can contribute to methane leaks, a potent greenhouse gas. Operators are required to implement leak detection and repair programs to minimize emissions. Pipelines also pose risks to ecosystems if ruptures occur.
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