DCPREZ-2016-11027 - Laserfiche WebLink

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7—, Kestrel Town of Vermont Risk Assessment Report Management- As previously mentioned, risk was assessed in the environmental areas of noise, fuel storage and spill prevention, water and wastewater management, air emission sources, as well as the safety areas of heavy vehicle traffic and fire/explosion hazards. Observations related to these categories are discussed below. Environmental Noise A major consideration during the assessment regards the potential noise created during testing and how it may affect the surrounding environment and property owners. While Orbitec focuses on being a propulsion provider to the aerospace industry, it is important to note that the engines they develop and test are not considered "rocket" or "booster" engines, which may be the initial assumption of one first learning that they are in the aerospace industry. The classes of engines Orbitec develops and tests are smaller engines used to orient satellites while in orbit (Reaction Control engine, or RSC to be tested beginning in late 2016 or early 2017), or to propel a satellite into orbit after its carrier has ascended to the appropriate elevation (Upper Stage engine, anticipated to be tested beginning 2025). Below are tables that summarize the maximum sound pressure levels expected to be produced by the two classes of engines projected to be tested, and duration of those tests. The data are based on information received from Orbitec through interviews or documentation received. Table 3: Noise - RSC Engine Testing (beginning late 2016 or 2017) Test Phase Typical Maximum Projected Maximums Sound 80 dba 90 dba 90 dba 5-10 < 15 test/day tests/day 5 minutes/day Developmental 3-4 5 days/week 25 minutes/week Testing days/week 10-20 21.6 hours/year 5-10 seconds/test seconds/test 10-40 40 Qualification tests/year tests/year 13.3 hours/year Testing 10-20 20 minutes/test minutes/test • Page 5