§ 9-206. Limits.

(a) In general.

(1) Except as otherwise specified in this subtitle, the maximum permissible sound levels are as set in this section for the applicable zone.

(2) Where the property line of a use coincides with a zone boundary, the level specified in this section for the zone boundary controls.

(3) Where the use is on a public street, the "property line" referred to in this section is the boundary of the public right-of-way.

(b) Manufacturing zones.

If the sound is from a use in a manufacturing zone, the maximum permissible sound level is:

(1) 75 dB(A) at any point on the property line of the use;

(2) 70 dB(A) at any point on a boundary that separates the manufacturing zone from a commercial zone; and

(3) 70 dB(A) at any point on a boundary that separates the manufacturing zone from a residential zone.

If the sound is from a use in a commercial zone, the maximum permissible sound level is:

(1) 61 dB(A) at any point on the property line of the use;

(2) 64 dB(A) at any point on a boundary that separates the commercial zone from a manufacturing zone; and

(3) 58 dB(A) at any point on a boundary that separates the commercial zone from a residential zone.

(d) Residential zone.

If the sound is from a use in a residential zone, the maximum permissible sound level is:

(1) 55 dB(A) at any point on the property line of the use;

(2) 61 dB(A) at any point on a boundary that separates the residential zone from a manufacturing zone; and

(3) 58 dB(A) at any point on a boundary that separates the residential zone from a commercial zone.