Construction Stormwater General Permit
Construction site operators are required to be covered by a Construction Stormwater General Permit if they are engaged in clearing, grading, and excavating activities that disturb one or more acres and discharge stormwater to surface waters of the state. Smaller sites may also require coverage if they are part of a larger common plan of development that will ultimately disturb one acre or more. Operators of regulated construction sites are required to:
Permit Appeal and Proposed Modification
The current permit was appealed and a settlement agreement was reached for a minor permit modification. The Final CSWGP Modification with a Response to Comments was issued on March 22, 2017. Proposed changes went into effect May 5, 2017. Read and print the final permit changes and response to comments.
Contact Us - Contact your Permit Administrator for permit assistance or your Regional Office for site specific questions.
Resources and Guidance - DMRs, Stormwater monitoring, manuals, 303(d) list information, CESCL.
Questions? Contact Amy Moon at 360-407-6467 or firstname.lastname@example.org
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