L.A. County Sanitation District Lomita Sewer Tunnel Carson
KES performed air monitoring in Carson in support of a Sanitation Districts of Los Angeles County sewer pipe installation project. During the excavation of the tunnel, existing petroleum contamination was encountered in the tunneling path. Special care was required to prevent ignition of volatile gases, as well as to minimize worker exposure.
KES performed air monitoring in work zones during mining until work advanced past the contaminated region. Air monitoring included sampling and screening for benzene, a known carcinogen detected in the initial encounter.