rogen sulfide every few minutes. An audible and visible alarm will alert school officials in case gas levels reach dangerous levels, said Tom Watson, environmental program manager for new school construction. “It has not gone off.”
Next door in the park and soccer field, maintained by the Mountains Recreation and Conservation Authority, gas levels are checked manually every three months. The technicians, equipped with a hose and small pump, suck air samples out from perforated pipes sunk into the ground amid the park’s sycamore trees, waterfalls and winding paths. The samples are analyzed at the park an in a lab for gas levels.
“To date, all of the data have been within acceptable limits,” according to a school district statement.
If you want to check the actual results, you need to contact either the California Department of Toxic Substances Control or the LAUSD.
If you missed the last quarterly methane gas check at Vista Hermosa, don’t worry. As part of an agreement with the state, Watson said the testing “will go on forever.”