Forest Bill Would Jeopardize Clean Air and Public Health

Senate Environment Committee to Hear Substitute “Forest Harvest” Bill

Tomorrrow the Senate Environment Committee will hear a substitute version of Senator Smith’s controversial “Forest Harvest” bill, S1085 (old version).

There are a bunch of significant and controversial bills on the agenda, including SCR 59, a legislative veto of the “waiver rule” (See excellent NJ Spotlight story), so the forestry bill could fly under the radar.

I’ve written previously about the troubling forest and public lands issues raised by that bill, and some of those issues remain in the substitute version. But, for today, I will leave the forestry aspect to others, who have far more knowledge than I.

Instead, today I will focus on one disturbing aspect of the bill that has gotten no attention.

NJ 2002 PM 2.5 emissions (Source: NJDEP)

The bill would promote “controlled burns” as a forestry management technique, on a statewide basis. The bill would also encourage more burning of firewood.

Thus, the bill would have significant adverse impacts on air quality and public health.

Here is NJ DEP emissions inventory data for particulate matter.

Please read my letter to Chairman Smith, the sponsor, requesting that the controlled burn provisions be eliminated.

Dear Senator Smith:

I wanted to provide emissions data and science to support my concerns on the controlled burn provisions of substitute for S1085, which I understand will be expanded from the Pines to statewide. 

As you know, north jersey hardwood forests are ecologically very different from Pines, particularly with respect to the role of fire. The human population, population density (exposure potential) and ambient air quality in north jersey are significantly worse as well. 

In addition to air quality and public health concerns, please be advised that increased incremental emissions from prescribed burns (and residential wood burning from harvested wood) would need to be factored into NJ’s SIP. 

Thus, the forestry practices of S1085 could have an unintended and significant consequence of forcing costly emissions ratchet down on other commercial and industrial sources to achieve instate PM 2.5 NAAQS.

The Mid-Atlantic Regional Air Management Association (MARAMA) made a presentation to the NJ Clean Air Council on April 11, 2012 that provided emissions inventory data and projections.

MARAMA identified prescribed burns and wood burning stoves as significant sources of PM 2.5 (and other pollutants, including ozone precursor VOC’s).

According to the MARAMA regional air emissions inventory, PM 2.5 emissions in NJ declined from 19,350 tons per year in 2002, to 14,292 tons in 2007, a significant 35% reduction. Thus, new emissions from prescribed burns expanded by the bill would wipe out this progress on clean air and adversely effect public health.

Worse, PM 2.5 emissions were projected to rise (most current model) to 15,926 TPY in 2009, an 11.4% increase.

With additional emissions from forestry managed controlled burns and more combustion from wood burning stoves, compliance with EPA NAAQS air quality standards is made more difficult and costly.

Last, while the technical literature on these issues is vast, here are  relevant abstracts:

Simulation of Air Quality Impacts from Prescribed Fires on an Urban Area

Abstract

On February 28, 2007, a severe smoke event caused by prescribed forest fires occurred in Atlanta, GA. Later smoke events in the southeastern metropolitan areas of the United States caused by the Georgia−Florida wild forest fires further magnified the significance of forest fire emissions and the benefits of being able to accurately predict such occurrences. By using preburning information, we utilize an operational forecasting system to simulate the potential air quality impacts from two large February 28th fires. Our “forecast” predicts that the scheduled prescribed fires would have resulted in over 1 million Atlanta residents being potentially exposed to fine particle matter (PM2.5) levels of 35 µg m−3 or higher from 4 p.m. to midnight. The simulated peak 1 h PM2.5 concentration is about 121 µg m−3. Our study suggests that the current air quality forecasting technology can be a useful tool for helping the management of fire activities to protect public health. With postburning information, our “hindcast” predictions improved significantly on timing and location and slightly on peak values. “Hindcast” simulations also indicated that additional isoprenoid emissions from pine species temporarily triggered by the fire could induce rapid ozone and secondary organic aerosol formation during late winter. Results from this study suggest that fire induced biogenic volatile organic compounds emissions missing from current fire emissions estimate should be included in the future.

Abstract

Prescribed burning is a significant source of fine particulate matter (PM2.5) in the southeastern United States. However, limited data exist on the emission characteristics from this source. Various organic and inorganic compounds both in the gas and particle phase were measured in the emissions of prescribed burnings conducted at two pine-dominated forest areas in Georgia. The measurements of volatile organic compounds (VOCs) and PM2.5 allowed the determination of emission factors for the flaming and smoldering stages of prescribed burnings. The VOC emission factors from smoldering were distinctly higher than those from flaming except for ethene, ethyne, and organic nitrate compounds. VOC emission factors show that emissions of certain aromatic compounds and terpenes such as α and β-pinenes, which are important precursors for secondary organic aerosol (SOA), are much higher from active prescribed burnings than from fireplace wood and laboratory open burning studies. Levoglucosan is the major particulate organic compound (POC) emitted for all these studies, though its emission relative to total organic carbon (mg/g OC) differs significantly. Furthermore, cholesterol, an important fingerprint for meat cooking, was observed only in our in situ study indicating a significant release from the soil and soil organisms during open burning. Source apportionment of ambient primary fine particulate OC measured at two urban receptor locations 20−25 km downwind yields 74 ±11% during and immediately after the burns using our new in situ profile. In comparison with the previous source profile from laboratory simulations, however, this OC contribution is on average 27 ±5% lower.
I am available to respond to your questions. While I have other concerns with the substitute bill, I strongly urge that you delete the prescribed bur provisions from the bill.
Sincerely,
Bill Wolfe, Director
NJ PEER
609-397-4861

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