Becker's Iowa Environmental Law Update : Iowa Environmental Lawyer & Attorney : Charles Becker : Belin McCormick P.C. Law Firm : IA Regulatory Compliance, Site Cleanups

It appears that the Obama EPA believes that it's pretty hard to measure something if you don't put a number on it.  We're seeing this philosophy play out in the area of imposing discharge limits, where it has become clear that EPA prefers numeric standards over narrative or descriptive standards.

For example, for more than fifteen years, stormwater discharge permitting from construction sites has relied on the use of “best management practices” or the installation of barriers to slow down runoff (such as silt fences or detention basins). When this was properly done, the stormwater regulations were routinely viewed as being satisfied. That has now changed. EPA, for the first time, has imposed a discharge standard of 280 NTUs on stormwater leaving the construction site. The proposed numeric standard was going to be 13 NTUs, but, after participants at public hearings pointed out that this was virtually impossible to meet, EPA switched to 280 NTUs.

Similarly, EPA has, for the first time, implemented a numeric standard for suspended solids that may enter streams from mountaintop mining sites. The solids will be measured through stream conductivity, with a cap of 500 uS/cm. According to EPA Administrator Lisa Jackson, there are “no or very few valley fields that are going to meet this standard.” EPA is taking public comment on this proposed standard until December 1, 2010 but has made it effective immediately.

Moving to air regulation, EPA has finalized a greenhouse gas emission limit from cars and light trucks at an average of 250 grams per mile of carbon dioxide in 2016. This would be the first nation-wide greenhouse gas emission limit to be adopted by the United States.

For anyone who thinks that this trend is going unnoticed by those who watch this sort of thing, I would point out that Sierra Club has renewed its request to EPA to set, for the first time, numeric water quality standards for nitrogen and phosphorus. Nitrogen and phosphorus are the primary pollutants in the dead zone found in the Gulf of Mexico.  Should EPA be inclined to impose such a numeric standard, and if recent attempts to regulate non-point sources are successful, the change could have an immediate impact on farming, which, while being the primary source of income in many states, is also the primary source of nitrogen and phosphorus contamination in lakes, streams and rivers.

Businesses should take note of this direction. Numeric standards can be very difficult on regulated entities. These standards are much easier to enforce than descriptive or narrative standards and they eliminate all discussions of what is fair or reasonable or necessary based on differences in circumstances or locales. Except in the actual creation of the standard, there is no cost/benefit analysis employed. The only question is whether the discharge of the regulated substance is above or below the regulated level, and where that number is put can determine whether you are in, or out of, business.

RELATED POSTS: New Stormwater Regulatuions Rain Down on Developers 

                             Stormwater Regulation of Developed Sites Coming?

                             Agricultural Runoff Comes Under Scrutiny

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Stormwater runoff from construction sites has been an area of environmental regulation that received only passing attention until sometime around 2004.  In that year, EPA inspected a large retail facility, found multiple violations and imposed heavy fines.  Since then, EPA has expended significant resources to ensure compliance with the regulations. 

In 2008, EPA determined  that the existing regulations were insufficient and proposed additional  regulations.  The proposed rules were put out for public comment and on November 23, 2009,  EPA handed down new, technology-based guidelines. For developers and home builders, it wasn’t good news. The new regulations, found at 40 C.F.R. Part 450, impose two new requirements:

1.    Construction site owners and operators that disturb one or more acres must use best management practices to ensure that soil disturbing during construction activities will not pollute nearby waters;

2.    Construction sites that disturb 20 acres or more at one time (later being reduced to 10 acres) must monitor discharges from the site and prevent discharges that exceed 280 nephelometric turbidity units (NTUs) from leaving the site.

The second requirement sets out, for the first time, a numeric standard on discharge from construction sites. EPA’s original proposal was to have a numeric limit of 13 NTUs, which is a very clean discharge. During the comment period, EPA was informed that a limit of 13 NTUs would increase the cost of construction by $15,000 to $45,000 per acre. The final standard of 280 NTUs, while more lenient, will add some significant costs to new construction.

A few items of note about the 280 NTU limit:

1.   If the rainfall is in excess of the 2-year, 24-hour storm event, then the limit does not apply.  In effect, such a large rainfall is treated as a bypass event;

2.    If less than 20 acres (or, later, 10 acres) is disturbed at one time, then the limit does not apply.  As soon as a developer goes over 20 acres of open area, the limit kicks in until there is a drop below 20 acres, in which case the limit no longer applies;

3.    In counting the 20 (or 10) acres, the develop must count all of the acres within the same common plan of development or sale even if the open acres are not contiguous;

4.    The developer can test the effluent multiple times over the course of the day, but the average of those test results must be less than 280 NTUs to avoid a violation;

5.   The BMP requirement applies at all times and is not tied to the 280 NTU limit.

Because the new requirements are a significant departure from the existing regulations, they will be phased in:

1.    Construction sites that disturb 20 acres or more at one time will need to monitor beginning 18 months after the effective date of the rule;
 

2.    Construction sites that disturb 10 acres or more at one time will need to monitor beginning four years after the effective date of the rule.

For states that have not been delegated NPDES authority and that use the federal storm water construction permits (Idaho, Massachusetts, New Hampshire, New Mexico and the District of Columbia), this means that the monitoring will begin August 1, 2011, and February 1, 2014. States that have been granted authority and periodically receive approval for the program will have a delay of the effective date. In the past, EPA has allowed the states to phase in new rules in accordance with their permit renewal dates. For example, Iowa’s storm water construction permit will be renewed on or about October 1, 2012. Therefore, Iowa’s compliance dates for the new requirements could be April 1, 2014, and October 1, 2016. We’ll have to wait to see if this interpretation is allowed for these new rules.

The changes imposed by the new rule couldn’t have come at a worse time, but, to some extent, EPA had no choice. The rule changes were in response to a court order that compelled EPA to makes changes by December 1, 2009. The question that remains is whether the new rules are sensible. That question is for another post.

RELATED POSTS: Stormwater Regulation of Developed Sites Coming?

                             The Train's A-Comin': More Stormwater Rule Changes  

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