AGC Call for Input! What Are the Obstacles To Sampling Construction Site Runoff?

Be aware that the U.S. Environmental Protection Agency (EPA) remains committed to developing a first-time, nationwide numeric turbidity limitation for active construction sites. EPA has asked the public for feedback on issues related to collecting stormwater samples in the field and analyzing monitoring data.  EPA also is looking for more information on the performance of stormwater treatment technologies, in general. CLICK HERE to help AGC craft a well-informed and comprehensive response to EPA by the March 5 deadline!  Don’t let the federal government set an unattainable discharge limit or mandate costly and complicated monitoring procedures for construction site runoff. More Details The construction site runoff dataset that EPA used to develop its December 2009 numeric turbidity limit of 280 nephelometric turbidity units (NTU) — dictating how much dirt is allowed in stormwater that runs across a construction site – is based on numerous factual errors.  EPA has suspended indefinitely the 280 NTU limit, responding to legal challenges brought by the U.S. Small Business Administration and industry. Currently the agency is working to propose a “corrected” turbidity limit.  EPA published a notice on Jan. 3, 2012, acknowledging that there are many issues associated with monitoring turbidity in stormwater runoff from construction sites — primarily pointing out limitations associated with sample collection procedures, turbidity measuring equipment, and sample handling and analysis methods.  EPA is asking the public to comment on these issues. EPA also is asking the public to provide it with additional data and input on the performance, cost, effectiveness and feasibility of different technologies (“passive and semi-passive treatment approaches”) in controlling turbidity levels (a measure of water clarity) in construction stormwater discharges. EPA said it will use the data and information submitted by the public to set a new, “corrected” numeric turbidity limit for construction site runoff. EPA will accept comments until March 5, 2012.  CLICK HERE for a list of specific questions on which AGC needs contractor-members’ input.  You do not need to answer every question! For more information, please contact Leah Pilconis at pilconisl@agc.org.