Resolution 3528 - Laserfiche WebLink

• From 10:00 p.m. to 7:00 a.m. the maximum noise limits under State and Local noise ordinances for Industrial Sources and Residential Receivers are: 65 dBA: for up to 1.5 minutes 60 dBA: for up to 5.0 minutes 55 dBA: for up to 15.0 minutes 50 dBA: continuously in any one hour (DEIS, App. G -Noise, pg 1-4) • The Receptor Noise Criteria Table contains the following noise criteria for residential uses: 55 - 65 DNL: Acceptable for residential uses, but noticeable noise impacts. 65 - 75 DNL: Generally unacceptable for residential uses. Requires special insulation for noise reduction. • The Decision Document requires that Boeing locate and select ground run-up stations for engine testing which will minimize noise impacts. • The intent of this requirement is to minimize noise impacts from engine testing, while allowing Boeing the necessary operational flexibility to accomplish necessary testing. Conclusions: • Noise impacts at the Millers' residence result from the frequency and duration of aircraft engine run-up testing noise. • Noise levels which will occur at the Millers' residence will be an annoyance but are within acceptable range for residential use (by EPA standards). • The Decision Document includes requirements to mitigate noise impacts beyond what is required by State and Local noise regulations. • The noise mitigation requirements included in the Decision Document will reasonably mitigate noise impacts of the Boeing (Master Development Plan) Expansion. • Appellant has not demonstrated that the Decision of the Responsible Official is unreasonable. Decision: Add the following language to mitigation Item iii. on Page 30 of the Decision Document: 24