Tag: polycyclic aromatic hydrocarbons (PAHs)

Benicia CA – TOURTELOT PROPERTY (48970005) Housing on unexploded shells on Gunnery range

What happens when you build a housing development and then 6 years later you find unexploded artillery shells on the property? Perhaps it might have been a clue that the property was once called the Benicia Arsenal and that during World War II it was an artillery range?

Site History

Prior to 1990, the Tourtelot Property consisted of approximately 220 acres of undeveloped grassland situated in the northwest corner of the former Benicia Arsenal. The Army leased the Tourtelot Property from 1944 to 1960 for artillery testing, ordnance and explosives (OE) demilitarization, and demolition of damaged and obsolete munitions. In 1990, Granite Management Corporation (Granite) began grading the site for home construction. In 1996, Granite found concrete-filled howitzer shells and live ordnance on the site. Granite then retained the U.S. Army Corps of Engineers to characterize the site for OE and chemical impacts to soil and groundwater. Contaminants on the Tourtelot Property included: petroleum hydrocarbons; polynuclear aromatic hydrocarbons; dioxins/furans (combustion by-products); volatile organic compounds; trinitrotoluene; and OE. Continue reading “Benicia CA – TOURTELOT PROPERTY (48970005) Housing on unexploded shells on Gunnery range” →

SF- 1598 BAY STREET (60002282) Voluntary Cleanup

Site History

Envirostor Page for 1598 BAY STREET, SAN FRANCISCO, CA 94123

Google Map

“The 1598 Bay Site is within the larger Pacific Gas and Electric Former North Beach Manufactured Gas Plant Site (MGP) Site identified and managed as APN 0459007. As part of the PG&E Former North Beach MGP Site, PG&E in 2016 excavated and disposed of approximately 9,000 cubic yards of soil impacted with MGP-residues, primarily polycyclic aromatic hydrocarbons (PAHs). The Removal Action Completion report for PG&E North Beach MGP- APN 0459007 documents the soil removal by PG&E.

As part of redevelopment of the Site into a four-story residential building with a first floor parking garage, the property owner/developer (also under DTSC oversight), installed and conducted verification testing of a vapor mitigation system (VMS). The Site Management Plan Implementation Report for the 1598 Bay Site documents the installation and verification testing of the VMS.

Post-construction indoor air and outdoor air sampling has been conducted and has been demonstrated to be protective for future occupants. Contamination left in place is addressed with institutional controls in the form of a Land Use Covenant and Agreement between DTSC and the property owner. Long term operation and maintenance of the VMS is managed under the Verification, Operation, and Maintenance Plan and Operations and Maintenance Agreement. (Updated by JT August 14, 2019).” Continue reading “SF- 1598 BAY STREET (60002282) Voluntary Cleanup” →

SF – 518 MINNA STREET SAN FRANCISCO, CA 94103 STATE RESPONSE OR NPL

Site History

Envirostor Page for 518 MINNA STREET SAN FRANCISCO, CA 94103

“The Site was originally marshland on the margin of the Mission Bay which was filled with dune sands and silt in the late 1800’s and early 1900’s for development. The Site has been used for residences, commercial lodging and parking lots from the 1899 until it was purchased by the San Francisco Redevelopment Agency in 1991. ASIAN Inc. has redeveloped the property into affordable housing units and one commercial unit.” Continue reading “SF – 518 MINNA STREET SAN FRANCISCO, CA 94103 STATE RESPONSE OR NPL” →

SF – 241 SIXTH STREET (38990011) San Francisco, CA, VOLUNTARY CLEANUP

Site History:

Envirostor (State of California) Page for 241 SIXTH STREET (38990011) San Francisco, CA

The site was formerly a marsh land which was filled in with contaminated soil containing lead and polycyclic aromatic hydrocarbons (PAHs). The Site was redeveloped into a multi-story affordable housing complex.

Google Map

Deed Restriction / Land Use Covenant:

Envirostor (State of California) Deed Restriction Page for 241 SIXTH STREET (38990011) San Francisco, CA 94103

Deed Restriction / Land Use Covenant  6/17/1994

  • ACTIVITIES PROHIBITED WHICH DISTURB THE REMEDY AND MONITORING SYSTEMS WITHOUT APPROVAL
  • LAND USE COVENANT
  • NOTIFY PRIOR TO SUBSURFACE WORK

pp. 6-7 of the Deed Restriction:

3.1 Restrictions on Use. Covenanter and Owner agree to restrict the use of the Property as follows:

3.1.1 The use of the Property is restricted to the development, construction, occupancy and maintenance of the affordable multi-family housing units as approved by the Department. No other use shall be allowed without the prior approval of the Department.

3.1.2 The Property shall not be used in such a way that will disturb or interfere with the integrity of any hazardous substance containment or monitoring system.

3.1.3 There shall not be any activity on the Property which will cause any potential harm to public health or safety or the environment.

Current Owners or companies on site: John Stewart Company Knox SRO

Envirostor disclaimer