§ 150.19  MONITORING GUIDELINES.
   (A)   All blasts shall be monitored for both horizontal and vertical ground vibrations and for air blast.
   (B)   For each blast, at least two seismographs shall be used, placed approximately at right angle to each other, with one being approximately behind the shot, opposite the direction of the blast and the other being generally between the blast and developed areas of the town, located at the nearest available residence or other building generally occupied by the public during the period when blasting occurs.
   (C)   The seismographs shall be of a type making a permanent record of the results, such as Everlert II including printer, manufactured by Vibra-Tech Engineering, Inc. or equivalent.
   (D)   Records for each blast, including location of blast, number of holes, depth of holes, amount of explosives used, amount of stemming and approximate number of tons of stone blasted, together with the seismograph record shall be maintained by the quarry operator at the site for a period of no less than three years.
   (E)   Records from each blast shall be available for inspection and copying by town officials or their designated representatives.
   (F)   (1)   If the average frequency of blasting in any calendar year is equal to or less than once per week, vibration and air blast monitoring shall be performed at least once during that calendar year.
      (2)   If the average frequency of blasting in any calendar year is greater than once per week, vibration and air blast monitoring shall be performed at least twice during that calendar year.
      (3)   Vibration and air blast monitoring shall be performed by an independent company, such as Vibra-Tech, Inc. or equivalent at the expense of the operator, and their results shall be retained along with other blasting records in accordance with divisions (D) and (E) above.
      (4)   A copy of the monitoring report shall also be provided to the Town Clerk-Treasurer within 15 days.
(Prior Code, § 6-111)  (Ord. 1994-6, passed 5-9-1994)  Penalty, see § 150.99