Critical slope area: areas having a grade of 25% or greater, as calculated by the methodology contained in Subsection B, below.

Moderate slope area: areas having a grade of 15% to 24%, as calculated by the methodology contained in Subsection B, below.

There shall be no site disturbance, including, but not limited to, grading of the land or removal of vegetation, no structures and no impervious coverage permitted within critical slope areas except for driveways and roads, both public and private; however, any driveway or road must be designed in compliance with maximum grade standards, as contained in this chapter. Roads and driveways shall follow the natural topography to the greatest extent possible to minimize disturbance.

The disturbance of slopes in the moderate category slope areas shall not exceed 50%. Disturbance shall include but is not limited to grading of the land; removal of vegetation; placement of structures, including stormwater management basins; and impervious coverage.

For the purposes of subdivision, each residential lot created must include the minimum buildable area as set forth in this chapter. Any existing residential lot of record at the time of the passage of this section shall be exempt from the above provisions, unless and until an application for subdivision or site plan approval of that lot is made.

The following standards shall apply to existing lots of record if the construction of a residence and associated improvements is proposed on slopes of 15% or greater: A lot grading plan which indicates the proposed driveway plan and profile in accordance with the standards set forth in Chapter 67 of the Township Code, residential and other site grading necessary for the property shall be submitted for review and approval by the Township Engineer. Such plan shall also provide for the proper protection and stabilization of all disturbed areas consistent with the design techniques established by the Soil Erosion and Sediment Control Standards, adopted and as amended by the New Jersey State Soil Conservation Committee. The approval of the Township Engineer shall be required prior to the issuance of a building permit.