Determine the process and required documentation to obtain an NYC DOT after-hours (nighttime/weekend) work variance from OCMC before scheduling overnight lane closures.
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Steps
Confirm baseline allowed construction hours: weekdays 7:00 AM-6:00 PM without special authorization
Identify that work outside that window (nights, weekends) requires an After-Hours Variance (AHV) specifically from NYC DOT's Office of Construction Mitigation and Coordination (OCMC)
Prepare a Construction Noise Mitigation Plan in advance, since AHV approval requires one already in place
Check whether DEP (Department of Environmental Protection) noise-mitigation steps apply in addition to the DOT/OCMC variance, since noise and street-work authorizations are handled by different agencies
Submit the AHV request together with the underlying street opening/construction permit application through OCMC, allowing lead time before the planned work date
Known gotchas
AHV (DOT/OCMC, for street/traffic authorization) and a DOB after-hours variance (for building-side construction noise) are separate approvals from separate agencies — a project spanning the curb and an adjacent building site may need both
The Construction Noise Mitigation Plan must be finalized before the AHV is granted, not submitted concurrently — sequencing affects lead time
NYC's Streetworks Manual sections on 'Executing Work in the Street' are supplementary reference material, not a substitute for the formal OCMC variance application itself
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