Pacific Rod and Gun Club Evaluation and Remediation
Location and History
While located at 520 John Muir Drive on the southwest side of Lake Merced, the Pacific Rod and Gun Club (PRGC) once occupied about 10-acres of land under lease from the City of San Francisco (City).Beginning in 1935 they offered recreational skeet and trap shooting for members and the public. Historical use of lead shot and clay targets containing poly aromatic hydrocarbons (PAHs) resulted in elevated levels of lead, arsenic and PAHs contamination in soils onsite. Numerous investigations were conducted at the site to characterize the contaminants in soils and sediments along the shoreline and surface water in Lake Merced located adjacent to the site. Results of these investigations indicated that historical use of lead shot and clay pigeons containing PAHs impacted soils and sediment along this section of shoreline.
The PRGC lease expired on April 8th 2015. The site is currently undergoing construction/remediation to address contaminated soils resulting from PRGC historical activities.
Site conditions Winter 2016
520 John Muir Drive is under the oversight of the San Francisco Regional Water Quality Control Board (RWQCB). In June 2013, the RWQCB issued Cleanup Order No. R2-2013-0023 requiring the remediation/cleanup of upland soils and additional investigation of in-lake sediments.
Site remediation ultimately included excavation and appropriate offsite disposal of approximately 58,600 cubic yards of contaminated soils and backfilling of excavated areas with clean fill material. Following completion of all earthwork, the site will be re-vegetated with appropriate native grasses to prevent erosion.
Construction/remediation commenced in May 2015 and is expected to be completed in March 2016
As of January 2016, cleanup work at this site is approximately 90% complete. Due to the discovery of additional buried contaminated soils, clay pigeon debris etc, onsite and in excess of previously anticipated amounts, excavations in some portions of the site have extended up to 11.5 feet below the surface. A community meeting was held on Oct. 21, 2015. to provide an update on the project. A look-ahead to the future at this site was presented by the SFPUC and SF Recreation and Parks (SFRPD). SFRPD has released a Request for Proposals for future use of this site.
Site cleanup underway
Site conditions following excavation and backfill
Installation of erosion control materials
Erosion control installation complete
Reports, Documents and Permits
PRGC Summary and FAQ
Site Investigation and Human Health Risk Assessment
RWQCB Final Cleanup Order for the Pacific Rod and Gun Club
Remedial Action Plan and Human Health Cleanup Goals
Final Mitigated Negative Declaration
Mitigation Monitoring and Reporting Program
Coastal Commission Permit
Streambed Alteration Permit