Viriginia previously provided guidance for the use of flocculants such as anionic polyacrylamide for treating turbid stormwater on site prior to discharging but there does not appear to be any mention of this treatment technology in the new permit. Given the new, stricter turbidity limits, practitioners will need tools and guidance on how to achieve the new turbidity mandates. The EPA's Construction General Permit provides language on what types of flocculants are allowed in the passive treatment of construction stormwater and dictates eco-toxicity standards for using food grade/ drinking water treatment chemicals.  It also provides guidance on how to test soil types prior to the application of these treatments to make sure the products applied are suitable for flocculating the soil type to which they are applied. Consider adopting language from the EPA's CGP to provide guidance to erosion and sediment control practitioners in Virginia.