Construction requirements: Compost blanket application.

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Annual Rainfall/Flow Rate Total Precipitation & Rainfall Erosivity Index Application Rate For Vegetated* Compost Surface Mulch Application Rate For Unvegetated Compost Surface Mulch
Low 1-25”, 20-90 ½ - ¾ ” (12.5 mm – 19 mm) 1” – 1 ½” (25 mm – 37.5mm)
Average 26-50”, 91-200 ¾ - 1” (19 mm – 25 mm) 1 ½” – 2” (37 mm – 50 mm)
High 51” and above, 201 and above 1-2” (25 mm – 50 mm) 2-4” (50mm – 100mm)
*These lower application rates should only be used in conjunction with seeding, and for compost blankets applied during the prescribed planting season for the particular region.