Environmental Protection
(2) x (sum of length of contours) | = | Lot average slope |
Lot area (square feet) |
Sound Level Limits by Receiving Land Use/District | ||
|---|---|---|
Land Use or Zoning District Receiving the Noise | Hours/Days | Maximum Sound Level (dBA) |
At any lot line in a residential district (other than a lot occupied by a principal commercial or industrial use) | 7:00 a.m. to 9:00 p.m. other than Sundays, Christmas Day, Thanksgiving Day, New Year's Day, Labor Day and Memorial Day | 67 |
9:00 p.m. to 7:00 a.m., plus all day Sundays, Christmas Day, Thanksgiving Day, New Year's Day, Labor Day and Memorial Day | 61 | |
At any lot line of a lot within an industrial district | All times and days | 74 |
At any lot line not listed above | All times and days | 70 |
NOTES: |
|---|
"dBA" means "A" weighted decibel. |
[For general information: The following provides a comparison of different typical dB(A) levels: |
40 dB(A) = typical background noise in a residential area |
50 dB(A) = a quiet automobile at 10 feet away |
60 dB(A) = the inside of a large store |
63 dB(A) = automobiles (other than trucks) along a nearby expressway |
68 dB(A) = conversation at one foot away |
72 dB(A) = train at 100 feet (other than horn) |
80 dB(A) = heavy traffic |
82 dB(A) = pneumatic drill at 50 feet |
89 dB(A) = subway train at 20 feet] |
Environmental Protection
(2) x (sum of length of contours) | = | Lot average slope |
Lot area (square feet) |
Sound Level Limits by Receiving Land Use/District | ||
|---|---|---|
Land Use or Zoning District Receiving the Noise | Hours/Days | Maximum Sound Level (dBA) |
At any lot line in a residential district (other than a lot occupied by a principal commercial or industrial use) | 7:00 a.m. to 9:00 p.m. other than Sundays, Christmas Day, Thanksgiving Day, New Year's Day, Labor Day and Memorial Day | 67 |
9:00 p.m. to 7:00 a.m., plus all day Sundays, Christmas Day, Thanksgiving Day, New Year's Day, Labor Day and Memorial Day | 61 | |
At any lot line of a lot within an industrial district | All times and days | 74 |
At any lot line not listed above | All times and days | 70 |
NOTES: |
|---|
"dBA" means "A" weighted decibel. |
[For general information: The following provides a comparison of different typical dB(A) levels: |
40 dB(A) = typical background noise in a residential area |
50 dB(A) = a quiet automobile at 10 feet away |
60 dB(A) = the inside of a large store |
63 dB(A) = automobiles (other than trucks) along a nearby expressway |
68 dB(A) = conversation at one foot away |
72 dB(A) = train at 100 feet (other than horn) |
80 dB(A) = heavy traffic |
82 dB(A) = pneumatic drill at 50 feet |
89 dB(A) = subway train at 20 feet] |