12 COMMERCIAL ZONE
Any noise level measurements made pursuant to this subsection shall be performed in accordance with the following criteria: |
a. | "Noise level" means the "A" weighted sound pressure level in decibels obtained by using a sound level meter at slow response with a reference pressure of twenty micronewtons per square meter. The unit of measurement shall be designated as dB(A). |
b. | "Sound level meter" means an instrument meeting American National Standard Institute's Standard S1.4-1971 for Type 1 or Type 2 sound level meters or an instrument and the associated recording and analyzing equipment which will provide equivalent data. |
The decision must be in writing and must include findings in support of the decision to grant or deny any extension of the amortization period. The decision must be hand delivered or sent by certified mail to the applicant within twenty business days of the hearing. |
12 COMMERCIAL ZONE
Any noise level measurements made pursuant to this subsection shall be performed in accordance with the following criteria: |
a. | "Noise level" means the "A" weighted sound pressure level in decibels obtained by using a sound level meter at slow response with a reference pressure of twenty micronewtons per square meter. The unit of measurement shall be designated as dB(A). |
b. | "Sound level meter" means an instrument meeting American National Standard Institute's Standard S1.4-1971 for Type 1 or Type 2 sound level meters or an instrument and the associated recording and analyzing equipment which will provide equivalent data. |
The decision must be in writing and must include findings in support of the decision to grant or deny any extension of the amortization period. The decision must be hand delivered or sent by certified mail to the applicant within twenty business days of the hearing. |