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520 John Muir Drive - Former site of the Pacific Rod and Gun Club

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. 

Erosion Control 2

Site conditions Summer 2016

Regulatory Oversight
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

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 has been re-vegetated with appropriate native grasses to prevent erosion.

Construction/remediation commenced in May 2015 and was completed in April 2016.

The cleanup and site remediation work is now complete. At its Oct 20, 2016 regular meeting the San Francisco Recreation and Parks Commission approved the Lake Merced West Proposal, SFRPD staff are negotiating the lease with the awardee.  The proposal and RPD Commission agenda item can be found at this link: SF Recreation and Park Commission.

Lake M 2016
  Site cleanup underway
Lake M 2016
  Site conditions following excavation and backfill
Lake M 2016
  Installation of erosion control materials
Lake M 2016
  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

  • Last updated: 9/28/2018 3:05:19 PM