20.935.030 Performance Standards.
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A. Environmental Noise. Unless otherwise exempted by WAC 173-60-050, no development or use may create noise impacts, measured at the property line of the receiving property that exceed the maximum environmental noise levels established by WAC 173-60-050 listed in Table 20.935.030-1 below:
|
Noise Source |
Receiving Property |
||
|
Residential |
Commercial |
Industrial |
|
|
Residential |
55 dBA1 |
57 dBA |
60 dBA |
|
Commercial |
57 |
60 |
65 |
|
Industrial |
60 |
65 |
70 |
1Applicable to Home Occupation related activities only.
1. The above maximum noise levels shall be reduced by 10 dBAs between the hours of 10 p.m. and 7:00 a.m. for the receiving property. Also, at any hour of the day or night the applicable noise limitations above may be exceeded for any receiving property by no more than 5 dBA for a total of 15 minutes in any one-hour period, or 10 dBA for a total of 5 minutes in any one-hour period, or 15 dBA for a total of 1.5 minutes in any one-hour period.
2. Where potential noise impacts to adjacent uses from a proposed land use or development activity are identified, measures to mitigate such impacts may be imposed upon the land use or activity through the applicable review process, and may include: construction of a sound wall or fence; reorientation of buildings, parking and loading areas; and/or placement of berms and landscaping.
3. Sound walls shall meet the design standards of VMC 20.912.080 Fences and Walls.
4. Outdoor construction activity, including construction staging, shall occur no earlier than 7 a.m. and no later than 8 p.m., seven days a week.
5. Due to the negative effect excessive levels of environmental noise have upon the public health, safety and welfare, the noise standards set out in Table 20.935-1 are intended to apply to all uses in existence on the date of adoption of this ordinance and no right to maintain a use not in conformance with those standards shall exist.
B. Off-site drainage. No property may be graded, filled, or otherwise altered in a way that allows stormwater runoff to flow onto another property. All stormwater runoff shall be contained on-site and directed to an approved stormwater facility (such as an infiltration system) unless otherwise approved by the City, and such facility shall be maintained in proper working condition.
C. Smoke and particulate matter. No development or use may create air emissions that exceed the legal limits established by the Southwest Clean Air Agency(SWCAA).
D. Light and glare. No development or use shall create off-site glare impacts from direct or reflected light sources. For new developments, the Planning Official may impose conditions which minimize potential off-site light and glare impacts, such as placement of light sources away from adjacent properties, requiring shields on lights, or reducing the number of lights to the minimum needed for safety and security. For existing sources of glare, the Code Enforcement Supervisor may require sources of glare to be shielded or redirected to minimize off-site glare. Due to the negative effect off-site light and glare have upon the public health, safety and welfare, the prohibition on off-site light and glare is intended to apply to all uses in existence on the date of adoption of this ordinance and no right to maintain a use creating off-site light and glare impacts shall exist.
E. Vibration. No development or use shall create off-site vibration impacts, discernible without instruments at the property line of the affected use. (Ord. M-3931 § 31, 11/02/2009; Ord. M-3643, 01/26/2004)