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Learn how to accede with babble authoritative requirements on your Washington Accompaniment Department of Transportation (WSDOT) projects.
Read Chapter 446: Babble of the Environmental Manual to apprentice about the policy ambience for project-level babble analyses.
The Updated WSDOT Babble Action (2020) (pdf 528 kb) describes the policies for project-level babble analysis. The action was adapted in March 2020 and the new adaptation charge be followed for all new projects. Projects with clay that started above-mentioned to March 2020 may abide to chase the previous WSDOT Babble Action (2011) (pdf 375 kb).
The Traffic Babble Archetypal (TNM) Guidance (pdf 743 kb) explains how to use the TNM archetypal for WSDOT projects.
Information on babble requirements for alteration or abuse projects is accessible from the Federal Alteration Administration and the Federal Abuse Administration.
Use the noise abode checklist (pdf 96 kb) to accomplish abiding you have included all advice bare for WSDOT’s assay and approval. The account can additionally advice with activity scoping.
The noise abode template (doc 499 kb) provides an outline and connected accomplishments argument to ensure your activity affidavit meets WSDOT criteria.
If you are alive on a WSDOT activity and charge a noise quality analysis, acquaintance Jim Laughlin, [email protected]
Lead authors on WSDOT babble studies charge accept completed the National Highway Institute (NHI) Highway Traffic Noise course, or agnate as bent by WSDOT. Our account of qualified babble professionals (pdf 84 kb) includes the names and acquaintance advice of consultants and WSDOT agents that accept met this requirement. If you accept taken the course, but are not listed, contact Jim Laughlin, [email protected], with a archetype of the Certificate of Training from NHI to verify qualifications.
If your WSDOT activity requires assignment at night, acquaint the Environmental Affidavit and Permit Specialist assigned to your project. Find added advice on our Local permits & approvals page.
WSDOT’s Biological Assessment advice provides information to abode underwater babble impacts.
Use the Fisheries Hydroacoustic Alive Group’s (FHWG) Underwater Babble Ecology Plan arrangement (doc 319 kb) to assimilate accession and advertisement underwater babble ecology data. For added accomplishments on the template, see the FHWG arrangement awning Letter (pdf 22 kb).
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