EPA Issues Construction Stormwater Rule -- First National Standards With Numeric Limits

Posted on November 24, 2009 by Seth Jaffe

Yesterday, EPA released its effluent guidelines for construction sites. The guidelines establish the first national standard containing numeric limitations on stormwater discharges. The final standard imposed is 280 nephelometric turbidity units. It will apply to all construction sites greater than 20 acres in size as of 18 months following the effective date of the regulations (which will be 60 days after Federal Register promulgation) and sites larger than 10 acres 4 years after the effective date.

As expected, EPA did not take NRDC and Waterkeeper Alliance up on their suggestion that EPA impose post-construction controls. However, since EPA has already signaled that its long-term plan is to impose stormwater controls beyond the current universe of industry and construction sites, it seems at this point that broader stormwater regulation by EPA is more a question of when than whether.

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Stormwater Discharges From Construction Activity: What Next From EPA?

Posted on August 7, 2009 by Seth Jaffe

Construction and development companies praying for an economic recovery next year have something else to worry about: pending new EPA regulations regarding stormwater discharges from construction activities – and claims from environmental groups that EPA’s proposal isn’t stringent enough.

EPA issued a proposal on November 28, 2008. That proposal is complex, but the aspect of it that has received the most attention is the requirement that certain construction sites greater than 30 acres meet numerical turbidity limits (specifically, 13 nephelometric turbidity units (NTUs), which I had to include in this post just because it sounds so cool). Developers have opposed the numeric limits; the National Association of Home Builders estimates that the cost to comply would be $15,000 to $45,000 per acre.

On the other hand, the NRDC and Waterkeeper Alliance have threatened to sue EPA if EPA does not revise the propose rule to include post-construction controls as part of the rule. EPA has stated that it is not planning to do so. It’s not obvious that NRDC and Waterkeeper Alliance have the better of this specific debate, but the argument regarding post-construction controls is similar to the ongoing discussion in Massachusetts and elsewhere regarding the need for ongoing stormwater controls at properties other than industrial facilities that are already regulated.

The issue is not going to go away.  EPA is under a deadline to issue the rule by December 1, 2009.

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