What is the rain trigger for SWPPP inspections in New York?

In New York, an inspection is triggered by No universal post-rain trigger; follow permit schedule.

State Compliance Reference

New York SWPPP Compliance

Quick Facts for New York

Authority: NYS Dept. of Environmental Conservation (DEC) (NY)
Permit: SPDES General Permit GP-0-25-001
Inspection Schedule: Daily contractor checks + qualified inspection weekly
Rain Trigger: No universal post-rain trigger; follow permit schedule

View Official Permit Calculate Fine Risk

This page is a field reference, not legal advice. Confirm the current permit, local requirements, and project-specific conditions with NYS Dept. of Environmental Conservation (DEC) before relying on a deadline or inspection schedule.Official sources last reviewed: 2026-09-12

Regulation Overview

Permitting Authority

NYS Dept. of Environmental Conservation (DEC)

Official Permit

SPDES General Permit GP-0-25-001

Inspection Frequency

Daily contractor checks + qualified inspection weekly

Rain Event Trigger

No universal post-rain trigger; follow permit schedule

Check Missed Events

State vs. Federal (EPA)
Varies

Daily Checks Are Separate from Inspections

The trained contractor's daily check of active work areas does not replace the qualified inspector's documented schedule. Confirm whether the twice-weekly or reduced inactive-site provisions apply.

Inspection Requirements for New York

Construction projects that disturb one or more acres—or smaller sites that are part of a larger common plan—commonly require stormwater permit coverage in New York. Eligibility, exemptions, local approvals, and project-specific conditions vary, so confirm coverage under the SPDES General Permit GP-0-25-001 before construction begins.

Operational Insight

Use the permit-defined schedule as the baseline and document each completed inspection. Project size, receiving water, stabilization status, or local approvals may change the frequency shown here.

Specific State Nuance

GP-0-25-001 is effective January 29, 2025 through January 28, 2030. A trained contractor checks active work areas daily; a qualified inspector normally inspects every seven calendar days. Twice-per-seven-day inspections apply to certain sites authorized to disturb more than five acres and certain sensitive-water discharges.