Candlestick Point Dust Monitoring

For Candlestick Point-Hunters Point Shipyard Stadium Demolition Page in Spanish click here - Demolición del Estadio

The Office of Community Investment and Infrastructure (OCII) and CP Development Co., LP, a subsidiary of Lennar Urban, entered into the Candlestick Point and Hunters Point Shipyard Phase 2 Disposition and Development Agreement in 2010 (“Phase 2 DDA”). The Phase 2 DDA has been amended twice, the full agreement and amendments are available here: 

Under the Phase 2 DDA, Candlestick Stadium, and its surrounding parking lot, was transferred from the Recreation and Parks Department to Lennar Urban. Lennar Urban is now responsible for the demolition of Candlestick Stadium and development of a new, mixed use community on Candlestick Point. The new development will occur in phases over the next 15-20 years, and will include: 6,225 units of housing – including rebuilding the Alice Griffith Public Housing, a regional retail center, a 220 room hotel, performance venue, and 160 acres of new and revitalized open space. Additional information about the future development of Candlestick Point can be found here: 

Lennar Urban is currently working on two, adjacent projects on Candlestick Point: 1) infrastructure and construction for the rebuild of Alice Griffith and 2) demolition of Candlestick Stadium. Lennar Urban began demolition of the Stadium in February 2015, which is anticipated to be completed by June 2015. As explained in greater detail below, demolition activities are overseen by the San Francisco Department of Public Health (DPH) and Department of Building Inspection (DBI) as well as a state agency, the Bay Area Air Quality Management District (BAAQMD).

Jump Straight To:

•    Who to Contact – Questions or Concerns
•    Document Library
•    Public Oversight of Demolition Activities
•    Demolition Schedule
•    Candlestick Stadium Hazardous Materials Abatement Prior to Abatement
•    Dust Control Plans: Alice Griffith and Candlestick Stadium
•    Dust Particulate (PM-10) Monitoring
•    Naturally Occurring Asbestos and Asbestos Monitoring
•    Daily Inspector Checklists


All Land Use Development proposals by Developers are first reviewed for environmental impacts under the requirements of the state California Environmental Quality Act (CEQA). The environmental review conducted in accordance with CEQA identifies mitigation measures to reduce significant environmental effects. Prior to approval of a project, OCII adopted feasible mitigation measures identified in the environmental document. Lennar Urban is required to follow all mitigation measures adopted by OCII such as requiring the best available technology for heavy vehicle emissions control.

For larger projects and those with sensitive receptors within 1000 feet, Lennar Urban must submit a Dust Control Plan for San Francisco Department of Public Health (DPH) approval to comply with Article 22B of the Health Code. This approved Dust Control Plan is required prior to Lennar Urban, or their contractors, receiving a permit to demolish or build from the San Francisco Department of Building Inspection (DBI). When asbestos-containing building materials or rock and soil will be disturbed, the Developer also has requirements imposed by the Bay Area Air Quality Management District (BAAQMD), the region’s air quality protection agency.

DBI is sending a field inspector to the Candlestick Stadium demolition site daily to observe that dust control practices are preventing visible dust. DPH has limited inspection resources, but does send inspectors to the site regularly to also observe that dust control practices are effectively preventing visible dust. BAAQMD’s field inspector makes daily random spot checks of equipment in use and dust control work practices.


August 2014 Lennar Urban assessment of hazardous materials in the Candlestick stadium structure was completed.
October 2014 Lennar Urban had previously been pursuing a permit from the Department of Building Inspection (DBI) to demolish Candlestick Stadium through implosion, and has since withdrawn that request.
January 2015 Lennar Urban hazardous materials abatement work of Candlestick stadium structure was completed.
January 13, 2015 SF Department of Building Inspection (DBI) issued Lennar Urban a permit to demolish Candlestick Stadium through mechanical, or conventional, methods.
February 2015     Lennar Urban began demolishing Candlestick Stadium through mechanical, or conventional, demolition means.
Anticipated by May 2015 Mechanical demolition of Candlestick Stadium will take approximately 3 months to complete.


In advance of commencing demolition, Lennar Urban completed a hazardous material abatement to ensure that there are no hazardous materials in the demolition debris. BAAQMD issued the permit for removal of asbestos-containing building materials. More information on BAAQMD’s Asbestos Programs can be found here: 


In advance of DBI issuing Lennar Urban a demolition permit, DPH reviewed and approved a Dust Control Plan for the Stadium Demolition, which provides specific work practice requirements to all contractors at the site. These include wetting practices and containment of storage piles to prevent visible dust and the migration of dust beyond the worksite.

The Dust Control Plan for Candlestick Point requires Lennar Urban to use qualified third party environmental consultants to provide daily worksite inspection of required dust control practices by contractors. Whenever the third party observes a deficiency in work practices, they must immediately inform the contractor superintendent onsite to correct those practices. The third party inspector has provided daily field notes to City agencies, more information on the Third Party Inspection list is found below.


The Candlestick Stadium Dust Control Plan requires a third-party environmental consultant to use monitors with optical detection of specific-size particulate matter at several locations around the demolition site perimeter to continuously measure levels of particulate matter that are less than 10 microns in diameter. The monitoring serves as another means to ensure that contractor dust control practices are consistent over time, and to flag specific dates and times when dust control practices should be examined in order to implement improvements.

These battery operated equipment are maintained by third party consultants, swapping out batteries, downloading the captured continuous monitoring data and also making three times a day manual readings of PM-10 levels to verify that the equipment is functioning. Data graphs are color coded to show the results for each monitor, and each graph shows the reference Action Level.

Exceedances of the Action Level do not indicate an immediate health risk to the public. Rather an exceedance will flag one of two possibilities: 1) A date and time when dust control practices were not effective and should be examined in order to implement improvements or 2) A date and time when an environmental event unrelated to the job site affected all monitors at once. Such events might include the optical detection of fog mist rather than dust particles, or passing vehicle emissions from public roadways. The third-party environmental consultant shares these data download graphs with DPH weekly for their review.

Understanding Particulate Matter Monitoring


Candlestick Point does have naturally occurring asbestos in the soil. To ensure the safety of workers, nearby residents and the public, Lennar Urban must perform work in accordance with an Asbestos Dust Mitigation and Fugitive Dust Control Plan, available in the documents section below. Compliance with the asbestos components of this plan is overseen by BAAQMD.

In addition to the activities at Candlestick Stadium, development is occurring at the Alice Griffith project including new infrastructure and the development of replacement public housing. Asbestos monitors are active on the Alice Griffith site because work is being performed below grade, meaning that soil with naturally occurring asbestos is being disturbed. The Candlestick Stadium site will also have asbestos monitors once soil disturbing/below grade work begins. 

Understanding Asbestos Monitoring


Members of the public are encouraged to call the Lennar Urban 1-(866)-553-6627 whenever they are concerned about visible dust or improper contractor practices. Those calls will have immediate response through Lennar Urban’s oversight, and the caller will hear back from Lennar Urban within 24 hours.

If response to the Lennar number is not satisfactory, members of the public with visible dust concerns should call 311 or DBI. This will trigger DBI’s inspector to visit the site and use the Building Code to enforce the visible dust requirements.

• Lennar Urban Number for Dust Control Concerns: 
    o Lennar Urban, 1-866-5-LENNAR [1-(866)-553-6627]

• City Enforcement of Dust Control Practices & Visible Dust Complaints: 311 or
    o Department of Building Inspection (DBI), Building Inspection Division, (415) 558-6570 or online at: 

• City Oversight of Particulate Dust Air Monitoring: 311 or
    o Department of Public Health (DPH), Environmental Health Branch, Site Assessment and Mitigation Program, (415) 252-3926

• BAAQMD Oversight of Asbestos Air Monitoring:
    o Bay Area Air Quality Management District (BAAQMD), (415) 749-4762 -or- 1-800-334-ODOR [1-(800)-334-6367]

• General Information:
o Tamsen Drew, Senior Project Manager, Office of Community Investment and Infrastructure,
        (415) 749-2539


Candlestick Stadium (Candlestick Point = CP)

Alice Griffith (=AG)