By Matthew Trygg // 2020-08-04
BMPs such as silt fence, straw wattles, bio logs, erosion control blanket and rip rap are effective ways to control sediment on your construction site, though only if they are installed and maintained properly. For example, when BMP crews install erosion control blankets (ECB) the ECB must match the manufactures specification. This is not just because the ECB works most effective when installed properly, but also to stay in compliance. Often the “easy” way to install a BMP is not the correct way. If BMPs are not installed according to the specification, there is a high probability that it will fail when it is needed the most. A Storm Water Pollution Prevention Plan should have detailed specifications for each BMP used on site. This specification shows how to install and how to maintain it while onsite.
For example if your site has an Erosion Control Blanket installed with no overlap rather than the upslope blanket 4 inches overlapping the downslope blanket. The ECB would not effectively stop erosion on the slope and would necessitate a corrective action directing the proper repair. In the end costing the builder time and money.
The Illinois Urban Manual 2013