08-24-1960 Special Meeting - Laserfiche WebLink

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• • 3. Vibration: • Earthborne vibration levels shall be measured with a three-component measuring system approved by the Zoning Administrator. Vibration shall be expressed as displacement in inches. 4. Smoke and Particulate Matter: (a) Any use already established on the effective date of this Ordinance shall be permitted to be altered, enlarged, expanded, or modified, provided that the new source of smoke or particulate matter conforms to the performance standards established hereinafter for the district in which such use is located. The total emission weight of particulate matter and smoke from all sources, within the lot boundaries, shall not exceed the net amount per- mitted in the district in which the use is located after such alteration, enlargement, expansion, or modification. (b) Particulate matter and other dusts, borne by the winds from such sources as storage areas, yards, roads, and similar sources within the lot bound- aries shall be minimized by appropriate land- ' scaping, paving, or other means acceptable to the Zoning Administrator. (c) Open industrial operations involving dust-producing equipment or operations such as sandblasting, paint- spraying, feed and grain handling, and similar operations, shall be so conducted that such dusts do not cross lot lines in concentrations exceeding one million particles per cubic foot when measured at ground Level or inhabitable elevation, whichever is more restrictive. (d) Chimneys, vents, stacks, etc. shall have provi- sions for the insertion of a probe to determine the particulate loading of an effluent. Such provision shall be at the discretion of the Zoning Adminis- trator, and sampling procedures shall follow those published by the American Industrial Hygiene Association in its Air Pollution Manual, Part I, Evaluation. -xr~ ~~