Matched in attachment:
"... Program 1a: Maintain river channel capacity whenever new
structures or fill are added by excavation ... day-night noise level (Ldn), which adds 10 dBA
during the night hours (10:00 PM to 7:00 AM). ... While both add a 10-dBA penalty to all nighttime noise events between 10:00 PM and 7:00
AM, Ldn does ... not add the evening 5-dBA penalty. ... As indicated above, the existing 954 ADT on Graylawn generates a CNEL of approximately 52.8 dBA ..."