No sand, gravel, quarry or other earth materials shall be removed below the four-foot elevation above maximum groundwater elevation. These elevations shall be established from a test pit and the levels related to a fixed benchmark on the property.

Removal and processing operations shall not be conducted closer than 100 feet to a street or closer than 25 feet to neighboring lot lines. Natural vegetation shall be left and maintained on the undisturbed land for screening and noise reduction purposes.

All equipment for sorting, washing, crushing, grading, drying, processing and treating or other operation machinery shall not be used closer than 100 feet to any street or to any adjoining lot line.

No more than one entrance and one exit shall be permitted to any excavation area.

Any access to excavated areas or areas in the process of excavation will be adequately posted with "Keep Out - Danger" signs.

Adequate provisions shall be made for drainage during and after completion of operations. The land shall be left so that natural storm drainage leaves the property at the original points and so that the area of drainage to any one point shall not be increased.

Any temporary shelters or buildings erected on the premises for use by personnel or storage of equipment shall be screened from public view. These structures shall be removed from the premises within 30 days after they are no longer needed.

No excavation shall be allowed closer than 50 feet to a natural stream.

In all zones, other than the Industrial - Limited Zone, operation hours shall be only between the hours of 7:00 a.m. and 8:00 p.m. weekdays, excluding Sundays and legal holidays, and loaded trucks may leave prescribed premises only within such hours.

During operations, when an excavation is located closer than 200 feet to a residential area public way and where the excavation will leave a depth of more than 15 feet with a slope in excess of 1:1, a fence of at least six feet high shall be erected to limit access to this area.

Lateral support shall be maintained for all adjacent lots in order to prevent landsliding and cave-ins.

A special permit, if issued, shall be issued for an initial three-year period. A renewal permit shall be necessary after a three-year period from the Board.

If, during the period of excavation of any area used for the removal of sand, gravel, quarry, or other earth materials, any portion thereof amounting to more than 30,000 square feet becomes unsuited for further use or is abandoned for removal operations, whichever comes first, such area or portion thereof shall be graded and replanted with grass, trees or shrubs or any permanent cover crop.

All sand and gravel pits presently operated as such are exempt from the requirement of obtaining a permit but must conform to all of the other conditions of this section.

No topsoil (loam) or subsoil (hardening) shall be removed from any area of ground within the legal limits of the Town consisting of more than 50,000 square feet, other than that which is incidental to and in connection with the construction of a building on the same lot, unless that person removing such topsoil or subsoil shall replant the entire area with rye, vetch, wheat, legumes or any permanent cover crop or reforest the area.