Township of Upper Merion, PA Article IV Erosion and Sedimentation Control

§ 140B-18 Applicability of erosion and sedimentation control standards.

All changes in the contour of the land, grading, excavating, removal or destruction of the topsoil and removal of trees or other vegetative cover of the land shall be known as "earth disturbance activities" and shall comply with the erosion and sedimentation control standards in this article.

§ 140B-19 General requirements.

A. All earth disturbance activities must be in conformance with Title 25, Rules and Regulations, Part I, Commonwealth of Pennsylvania, Department of Environmental Protection, Subpart C, Protection of Natural Resources, Article II, Water Resources, Chapter 102, Erosion and Sediment Control,[1] and in accordance with Montgomery County Conservation District policies.

[1] Editor's Note: See 25 Pa. Code Chapter 102.

B. The Township Engineer may require a review by the Montgomery County Conservation District of any plans for earth disturbance activity.

C. Plans for earth disturbance activities shall meet the following requirements:

(1) All projects involving earth disturbance that are required to get a Class B permit from the Township shall have an erosion and sedimentation control plan that meets the requirements of the Pennsylvania Erosion and Sediment Pollution Control Program Manual.

(2) All earth disturbance activities involving an earth disturbance activity that involves equal to or greater than 1.0 acres shall obtain a NPDES permit.

§ 140B-20 Design requirements.

In addition to any NPDES requirements, all earth disturbance activities shall meet the following requirements:

A. Minimum grading. The maximum bare area of a tract (without stabilization) shall not exceed 25% of the total area of the tract at any one time. This requirement shall apply only if the total area of the tract, before subdivision or land development, is greater than four acres.

B. The maximum time of exposure for bare areas shall be 20 days before stabilization measures must be implemented.

C. Fording or travel in the beds of perennial streams or intermittent streams with water by mechanized equipment is not permitted; bridges or culverts shall be used when crossing streams is necessary.

D. Roads and parking areas in active construction areas shall be completed (except for wearing course) before building construction is permitted. The binder course shall be repaired and returned to grade before installing the wearing course.

E. Temporary erosion control measures may be removed only after the construction area and contained site is stabilized and the lawn area established.

F. All newly graded slopes steeper than three to one or over shall be sodded or stabilized with erosion control netting.

G. A routine end-of-day check shall be made during construction to make sure that all control measures are working properly. All persons engaged in land disturbance activities shall design, implement and maintain control measures which prevent accelerated erosion and sedimentation. There shall be no adverse discharge of the sediment or other solid materials from the site as the result of stormwater runoff. This should be accomplished by scheduling the construction in such a way as to utilize new plantings and properly installed erosion control measures.

H. All erosion and sedimentation control structures shall be designed, built and maintained in accordance with the Pennsylvania Erosion and Sediment Pollution Control Program Manual.