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Erosion and Sediment Pollution Control Program Manual.pdf

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PA DEP<br />

STANDARD CONSTRUCTION DETAIL # 3-4<br />

Insloped Roadway<br />

Cut <strong>and</strong> fill slopes shall be stabilized immediately upon completion of roadway grading. These<br />

areas shall be blanketed wherever they are located within 50 feet of a surface water or within<br />

100 feet of an HQ or EV surface water or where a suitable vegetative filter strip does not exist.<br />

A top dressing composed of hard, durable stone, shall be provided for soils having low<br />

strength.<br />

Roadside ditches shall be provided with adequate protective lining.<br />

Adequately sized culverts or other suitable cross drains shall be provided at all seeps, springs,<br />

<strong>and</strong> drainage courses. Ditch relief culverts shall be provided at the intervals indicated on<br />

Table 3.3 or Table 3.4. Riprap outlet protection to be sized according to anticipated discharge<br />

velocity.<br />

Roadway shall be inspected weekly <strong>and</strong> after each runoff event. Damaged roadways, ditches,<br />

or cross drains shall be repaired immediately.<br />

363-2134-008 / March 31, 2012 / Page 20

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