Barrington Avenue residents near Sunset Boulevard in Brentwood may have seen transportation officials out at odd hours recording data last week. Those people were Metro officials taking noise level readings.
Last week, agency officials said they should have a report by Tuesday about the traffic noise in conjunction with quality of life concerns for neighbors to the I-405 Sepulveda Pass Improvements Project.
Community Relations Manager Kasey Shuda said one resident along Barrington Avenue contacted Metro claiming he believes ambient noise during non-construction time is higher than what is allowed. He claimed he can hear more traffic from his home about a half mile away.
Shuda said Caltrans' environmental impact report set the standard for existing noise levels prior to the start of construction. Areas along Brentwood Glen, Sunset and Church Lanes received ambient noise level readings, but not Barrington Avenue, Shuda added.
"It's out of bounds," she said. "We are taking readings at Church and Sunset to see if ambient noise has changed more than 12 decibels for Caltrans due to construction."
Mitigations must take place if noise goes above 12 decibels.
"Any noise from traffic cannot go over basic flat readings," Shuda said. "We are taking noise from Barrington to see if it's in that compliant level."
Last week, readings were taken during peak morning and afternoon/evening hours when work sites were quiet, noting construction work can affect ambient noise from the traffic flow.
"Caltrans has never been in an issue where noise readings were above [12 decibels]," Shuda said. "They do not anticipate these levels will be above what their charts predict."