Construction site erosion control
When people modify the landscape, oftentimes the soil underlying the construction site is bared. This allows the land to become more susceptible to erosion, allowing sediments to flow into our waterways and negatively affect water quality.
In order to mitigate these effects, there are Best Management Practices (BMPs) defined by Wisconsin’s Department of Natural Resources’s Technical Standards (TSs). Construction BMPs can be split into two different groups: Erosion Control BMPs and Sediment Control BMPs.
Erosion Control BMPs “Directly protect the disturbed soil surface from erosion . They are the best measure for preventing erosion .” - Wisconsin Costruction Site Erosion Control Field Guide. Read on to learn a bit more about Erosion Control BMPs.*
BMP 1: Land Application of Additives for Erosion Control (TS 1050)
Additives that are applied on land to reduce erosion include polyacrylamide and other polymers that may or may not be water soluble. These polymers help soil particles to bond together so that they are less easily eroded.
BMP 2: Non-Channel Erosion Mat (TS 1052)
Channel Erosion Mats are protective covers made of straw or some other plant or plastic fibers, often containing a plastic or biodegradable mesh as well. They are placed over newly planted grass or other vegetation in order to protect from erosion and reinforce the turf.
BMP 3: Channel Erosion Mat (TS 1053)
Channel Erosion Mats are protective covers made of straw or some other plant or plastic fibers, often containing a plastic or biodegradable mesh as well. They are placed over channels that have been or are being vegetated in order to protect from erosion and reinforce the turf.
BMP 4: Mulching for Construction Sites (TS 1053)
Mulch is organic material that blocks raindrop impact and slows overland flow velocity to reduce erosion of bare soil. Mulch can also increase soil moisture retention and allow plant cover to establish.
BMP 5: Seeding (TS 1059)
Seeding is the establishment of temporary or permanent vegetation in order to reduce erosion and run off on a site.
BMP 6: Grading Practices for Erosion Control - Temporary (TS 1067)
Temporary grading practices reduce erosion by roughening ???
“I. Definition Temporary grading practices used to minimize construction site erosion. These practices include, but are not limited to surface roughening (directional tracking and tillage) and temporary ditch sumps.
II. Purpose The purpose of these practices are to minimize erosion and sediment transport during grading operations on construction sites.”
BMP 7: Dust Check (TS 1068)
Dust Checks include a variety of strategies for minimizing the amount of dust that enters the air so that there is less wind erosion, less dust is deposited into waterways, less dust is breathed in by those inhabiting the areas around the construction site, and increased visibility at the site.
*Montgommery Associates Resource Solutions LLC. and Earth & Road Erosion Control and Geotextiles. (2016) Wisconsin Construction Site Erosion Control Field Guide. Last accessed Sept. 25, 2018 at https://dnr.wi.gov/topic/stormWater/documents/WIconstECfieldGuide.pdf