Check Dam Design for Maximum Effectiveness and Polyacrylamide Dosing

This involves testing the effectiveness of different check dams for sediment capture and release of PAM to flocculate runoff.  Some of the dams we are testing include standard rock, rock covered with erosion control blankets, and coir wattles.

Advanced Best Management Practices for Maximum Erosion, Sediment, and Turbidity Control

We have developed and tested a number of approaches to reducing sediment in construction site runoff and are deploying these on construction sites to determine how well they work.  Active construction sites are particularly challenging because of the constant changes as grading and building progresses, so this “real world” project will provide guidance on the best approaches to successful designs and installations.

Evaluation of Ground Covers on Construction Sites

There are a wide variety of products used as ground covers, including blown materials (mostly straw), hydraulically applied fibers, and erosion control blankets.  In addition, applying polyacrylamide along with these ground covers has great potential for further erosion reduction.  We have a continuous program of  evaluating this for both erosion reduction and vegetation establishment.