I attended a public meeting regarding Dept. of Toxic Substances Control's Draft Removal Action Workplan for the former rifle range on Tuesday, July 24. Approximately 50 samples were taken in the 6 acre lot, and five samples were contaminated. Lead, arsenic, antimony, and polynuclear aromatic hydrocarbons were found.
DTSC plans to scrape the soil in the contaminated areas and build a slope of contaminated soil against the hillside. They plan to top this consolidation area with 2 feet of clean soil and possibly plant natives. Water runoff will be directed to drain on non-contaminated areas of the property. They will post the consolidation area permanently and resample the site in a year. About 2/3s of the 6 acres will be open and available for use. However, a CCSF representative stated that it was uncertain how long the current fencing will remain in place since open areas in desolate places tend to attract use.
The Deed Restrictions would only apply to the consolidation area. The restrictions are that the site can't be residential and the slope must be maintained. A permit is required to move soil. Red-legged frog and SF garter snake are not near the worksite but nearby and exclusionary fencing will be installed to keep them out during construction. Their goal is to complete this work and certify the site as cleaned and contained by Sept. 30, 2007. The comment period expired on July 20 but was extended to July 31.
Pacifica and San Mateo County would like DTSC to remove the source of contamination (spent casings and fragments of clay pigeon targets), but DTSC has said it would be costly to do so and the consolidate and contain plan is effective and feasible. Mayor Pro Tem Jim Vreeland (738-9470) had asked that they make the consolidation site as small as possible and not leave the land a blighted site for Pacifica to deal with in the future. San Mateo County had written a letter to DTSC a year ago and still stands by their statement that the casings should be removed before certification. Vreeland might have the county's contact info.
I plan to write to them and ask what happens if there is slope failure after they certify the site and how will they determine which native plants to install. Also, I don't know where the 5 contaminated samples were taken. A drain pipe lies east-west across the property. Samples were negative downstream of the pipe, but it appears on a topo map that a channel or depression lies exactly above the buried drain pipe and during wet times may drain surface water from the property.
Please forward this information to as many people as possible. The draft RAW and Fact Sheet June 2007 may be accessed at DTSC. Click "find a site near you" and type in Pacifica 94044, get report; click Community Involvement for the documents. Note: typing in San Mateo County is not as direct.
Thanks for your help.