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Board upholds demolition permit at 2550 Irving after DTSC says PCE risks are low; neighbors remain concerned
Summary
The San Francisco Board of Appeals denied an appeal 3–2 on Feb. 22, allowing demolition at 2550 Irving Street after state toxicologists told the board they found low‑level PCE soil vapor and two homes with slightly elevated indoor readings. DTSC said monitoring and a site management plan will protect public health; neighborhood groups asked for more targeted testing.
The San Francisco Board of Appeals on Feb. 22 denied an appeal challenging the demolition permit for 2550 Irving Street, allowing the developer’s work to proceed despite neighborhood demands for more testing of perchloroethylene, a solvent known as PCE.
DTSC testimony and board decision
State regulators from the Department of Toxic Substances Control told the board they have found a dilute plume of PCE soil vapor beneath parts of the Irving Street neighborhood and that indoor air testing at two homes showed concentrations consistent with vapor intrusion at roughly twice California’s conservative screening level. Whitney Smith, a senior hazardous substance engineer with DTSC, told the board the measured…
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