Volume 2: Draft Gorst Planned Action Environmental Impact Statement

GORST PLANNED ACTION EIS | AFFECTED ENVIRONMENT, SIGNIFICANT IMPACTS, AND MITIGATION MEASURESIndoor noise levels are controlled by the noise reduction characteristics of the building shell. In general, doors andwindows are the acoustical weak link in a building. Therefore, careful consideration should be given to theirplacement. By limiting the number and size of these openings on the sides of the building exposed to noise,interior noise levels will be reduced.Often it is necessary to allow for a closed window condition to control interior noise. When this occurs, analternative means of ventilation such as heat pumps or forced air units may be necessary to meet building coderequirements. Heavy-pane or double-pane windows are frequently required to increase the sound insulationwithin a room. Doors facing a noise source should be solid-core and should be equipped with an appropriategasket.Local/Applicable Noise Level StandardsThe following mitigation measures are general and programmatic in nature, and may be further refined in projectspecificSEPA documents applicable in the watershed or applied in the Planned Action Ordinance in the UGA.Revise the Noise Ordinance and condition development proposals to achieve the following:• Provide hourly and maximum property line noise level limits for all major zoning districts defined in the ZoningOrdinance• Limit the hours of deliveries to commercial, mixed use, and industrial uses adjacent to residential and othernoise sensitive land uses• Limit the hours of operation for commercial and retail to limit noise intrusion into nearby residential and othernoise sensitive land uses• Limit noise levels generated by commercial and industrial uses• Limit outdoor industrial activities or operations to control excessive noise at adjacent residential properties• Limit the hours of operation of high noise-generating industrial equipment• Limit the hours of operation for refuse vehicles and parking lot sweepers if their activity results in an excessivenoise level that adversely affects adjacent residential uses• Require the placement of loading and unloading areas so that commercial buildings shield nearby residentialland uses from noise generated by loading dock and delivery activities. If necessary, additional sound barriersshall be constructed on the commercial sites to protect nearby noise sensitive uses• Require the placement of all commercial HVAC machinery to be placed within mechanical equipment roomswherever possible. (Equipment manufacturer’s specifications for venting and access to outside air shall bemaintained.)• Require the provision of localized noise barriers or rooftop parapets around HVAC, cooling towers, andmechanical equipment so that line-of-sight to the noise source from the property line of the noise sensitivereceptors is blocked. (Equipment manufacturer’s specifications for venting and access to outside air shall bemaintained.)In project-specific SEPA documents applicable in the watershed or through the Planned Action Ordinance in theUGA, the Kitsap County and City of Bremerton should require construction contractors to implement the followingmeasures during construction activities through contract provisions and/or conditions of approval as appropriate:• Construction equipment shall be properly maintained per manufacturers’ specifications and fitted with thebest available noise suppression devices (e.g., mufflers, silencers, wraps).• Construction operations and related activities associated with the project shall comply with the operationalhours outlined in the Kitsap County or City of Bremerton Noise Ordinance.Draft | June 2013 3-82