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D.C. Municipal Regulations (Last Updated: September 13, 2017) |
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Title 20. ENVIRONMENT |
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Chapter 20-29. NOISE MEASURING TEST PROCEDURES |
Section 20-2900. GENERAL PROVISIONS
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2900.1The purpose of this chapter is to establish standard testing procedures for measuring noise levels as prescribed under the provisions of Chapters 27 and 28 of this subtitle, the D.C. Noise Control Act of 1977 (D.C. Law 2-53, March 23, 1978).
2900.2The intent of this chapter shall be to do the following:
(a)Specify straight-forward procedures that are applicable to the large majority of expected situations; and
(b)Specify the limits of applicability of those procedures, such as situations in which acoustical specialists or specialized equipment may be required to supplement the procedures.
2900.3The measurement procedures provided in this chapter shall be reviewed periodically with reference to changes in the practice of noise measurement, instrumentation, District code, and legal precedent.
2900.4The measurement of noise produced by motor vehicles in transit shall be prescribed by District and federal laws. Enforcement by police officers shall be provided by District law.
2900.5Any situation in which the noise source cannot be demonstrated to increase the total noise at the measurement point by at least four (4) dB(A) over the ambient level shall be considered unmeasurable by the techniques described in this chapter.
2900.6Any situation in which readings exceed the statutory limits, but are less than the statutory limit plus the grace limit, the noise shall be measured with more specialized or more accurate equipment prior to deciding whether the source is in compliance with the Act.
2900.7When readings exceed the statutory limits, but are less than the statutory limit plus the grace limit, consultation with qualified professional personnel shall be required.