19-4 EROSION CONTROL.

Grading activity, up to and including pad certification, is subject to periodic review and approval of the Town Engineer and may be prohibited between October 15 and April 15 or at any other time erosion potential exists, Grading activity may occur between October 15 and April 15 upon approval by the Town Engineer of applicant’s written request. (Ord. #89-22, §928.25)

a. Interim erosion-control plans are required for each grading or paving permit for work performed during the rainy season. This plan shall include, but not be limited to, the following:

1. Calculations of surface run-off from the site under reasonably expected rainfall events.

2. A delineation and brief description of the measures to be undertaken to retain sediment on the site, including the designs and specifications for sediment detention basins and traps, and a schedule for their maintenance and upkeep.

3. A delineation and brief description of the surface run-off and erosion-control measures to be implemented, including types and methods of applying mulches, and designs and specifications for diverters, dikes and drains, and a schedule for their maintenance and upkeep. Use of gravel bags are encouraged over sand bags.

4. A delineation and brief description of the vegetative measures to be used, including types of seed and fertilizer and their application rates, the type, location and extent of pre-existing and undisturbed vegetation types, and a schedule for maintenance and upkeep.

5. The name and twenty-four (24) hour telephone number of the person responsible for performing emergency erosioncontrol work.

6. The signature of the erosion-control specialist who prepared the plan and who is responsible for monitoring of the erosion-control work.

7. The streets and drainage devices that will be completed and paved by October 15.

8. Indication of how access will be provided to maintain desilting facilities during wet weather.

9. A work schedule that includes: the proposed grading schedule; the proposed conditions of the site on August 15, September 15, October 1, and October 15 during which the permit is in effect; the proposed schedule for installation of all temporary erosion and sediment-control measures; schedule for construction of final improvements; and schedule for installation of permanent erosion and sediment control devices when required.

10. Consideration of drainage patterns during the various phases of grading throughout the rainy season.

11. An estimate of the cost of implementing and maintaining all interim erosion and sediment-control measures.

12. Any additional information required by the Town Engineer to ensure performance of erosion and sediment-control systems.

b. Final erosion-control plans are required for each grading or paving permit and shall describe conditions after constructing final structures and improvements. This plan shall include the following:

1. A description of, and specifications for, sediment detention devices.

2. A description of and specifications for surface run-off and erosion-control devices.

3. A description of vegetative measures.

4. An estimate of the costs of implementing all final erosion and sediment-control measures, submitted in a form acceptable to the Town Engineer.

c. The surface of all cut slopes more than five (5’) feet in height and fill slopes more than three (3’) feet in height shall be protected against erosion by planting with grass or ground cover plants. The plants and planting methods shall be suitable for the soil and climatic conditions of the site and in accordance with standard specifications on file in the Engineering Division.

(Ord. #89-22, §92-8.26)

The permittee is responsible for maintaining temporary erosion-control measures in substantial conformance with the approved erosion-control plan(s) for the entire time during which construction is being performed. An erosion-control permit is required on all sites unless specifically exempted in this chapter or by the Town Engineer. A bond or cash deposit may be required by the Town prior to grading permit issuance to ensure compliance with these regulations. The bond or cash security may be retained by the Town for a period of one (1) year if, in the Town’s opinion, a question exists as to the slope stability without natural vegetation. (Ord. #89-22, §92-8.27)