1995-05-26_GENERAL DOCUMENTS - C1981017

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r Installation Guide Anchoring - Methods General "_- Overlapping = 4 = t.. ` • " Side overlap 2" End overlap 6" Check slot Al" Slopes Channels • Grade and smooth slope. Apply fertilizer and seed Grade and smooth channel. Apply fertilizer and prior to installing blankets. seed prior to installing blankets. • Anchor blankets at top of slope. Use anchoring • Anchor blankets at top of channel ("B"). Backfill method"A"for 4:1 slopes, "B"for 3:1 slopes and"C" with check slot material. For culvert outfalls, place for 2:1 and steeper slopes. blanket at least 12 inches upstream from pipe open- 9 Unroll blankets in direction of water flow. Place ing. blankets loosely and in full contact with the soil. • Install a blanket in the center of the channel, in the • Overlap blanket edges approximately 2" and direction of water flow. Additional blankets are staple. Note: install blankets so edge overlaps are installed at the edges of this center blanket. shingled away from prevailing wind. • Construct check slots with soil, gravel, or stone, in • Overlap blanket ends 6",upper blanket over lower the middle (45 ft.) and end of each blanket. blanket, and staple using five staples (anchor "A") • Overlap side channel blanket edges 4" over the • Cut excess blanket with scissors and anchor at end center channel blanket and staple. of slope. Use anchoring method "A" for 4:1 slopes • Anchor the top edge of side channel blankets("B"). and "B" for slopes 3:1 or steeper. • Anchor the terminal ends of blankets in a check slot. Shorelines • Grade and smooth channel. Apply fertilizer and seed prior to installing blankets. ' • Install blankets during lowest possible water level. ` • Install blankets horizontally along shoreline if one j" width is sufficient. Al,-. t _ • Secure top edge of blanket("B"). '` • Overlap blanket ends and staple ("A"). • Anchor bottom edge of blanket ("B"). • For shorelines steeper than 3:1 slope, install blan- kets vertically using slope instructions.