(a) Notice of Construction Commencement. The applicant must notify the City of Dunbar in advance before the commencement of construction. Regular inspections of the storm water management system construction shall be conducted by the staff of the City of Dunbar or certified by a professional engineer or their designee who has been approved by the jurisdictional storm water authority. All inspections shall be documented and written reports prepared that contain the following information:
(1) The date and location of the inspection;
(2) Whether construction is in compliance with the approved stormwater management plan.
(3) Variations from the approved construction specifications.
(4) Any violations that exist.
(5) If any violations are found, the property owner shall be notified in writing of the nature of the violation and the required corrective actions. No added work shall proceed until any violations are corrected and all work previously completed has received approval by the City of Dunbar.
(b) As Built Plans. All applicants are required to submit actual "as built"plans for any stormwater management practices located on-site after final construction is completed. The plan must show the final design specifications for all stormwater management facilities and must be certified by a professional engineer. A final inspection by the City of Dunbar is required before the release of any performance securities can occur.
(c) Landscaping and Stabilization Requirements. Any area of land from which the natural vegetative cover has been either partially or wholly cleared or removed by development activities shall be revegetated within ten (10) days from the substantial completion of such clearing and construction. The following criteria shall apply to revegetation efforts:
(1) Reseeding must be done with an annual or perennial cover crop accompanied by placement of straw mulch or its equivalent of sufficient coverage to control erosion until such time as the cover crop is established over ninety percent (90%) of the seeded area. Replanting with native woody and herbaceous vegetation must be accompanied by placement of straw mulch or its equivalent of sufficient coverage to control erosion until the plantings are established and are capable of controlling erosion.
(2) Any area of revegetation must exhibit survival of a minimum of seventy-five percent (75%) of the cover crop throughout the year immediately following revegetation. Revegetation must be repeated in successive years until the minimum seventy-five percent (75%) survival for one (1) year is achieved.
In addition to the above requirements, a landscaping plan must be submitted with the final design describing the vegetative stabilization and management techniques to be used at a site after construction is completed. This plan will explain not only how the site will be stabilized after construction, but who will be responsible for the maintenance of vegetation at the site and what practices will be employed to ensure that adequate vegetative cover is preserved. This plan must be prepared by a registered landscape architect or by the soil conservation district, and must be approved prior to receiving a permit.
(Ord. 654. Passed 7-6-10.)