# Presentation: 275966

## Air Innovations Conference

**North Carolina Clean Smokestacks ACT**
**Air Innovations Conference**
**Chicago, IL**
** **
**August 11, 2004**

**Brock Nicholson, P.E. **
**Deputy Director **
**N.C. Division of Air Quality**

## Clean Smokestacks Act Results from Broad Stakeholder Effort

**Utility Companies**
**Legislative Sponsors**
**Environmental Community**
**Division of Air Quality / Dept. of Environment and Natural Resources**
**Governor’s Office**
**Attorney Generals Office**
**State Utilities Commission**
**Business and Industrial Community**
**Utility Rate Payers**
** **

## Background  on Origin and Creation of Clean Smokestack Act

***In 1st Year:***
***Concerns About Air Quality in Western NC***
***Environmental Group Efforts***
***NOx SIP Rule***
***Legislative Sponsors Ownership***
***Real Reductions in NC***
***Deal on Pollutant Caps***
***Cost Recovery***
***SAMI Finding***
***Support by Utility Companies***
***In 2nd Year:***
***Leadership by Governor***
***Creativeness by Utilities Commission and Companies***
***Handling of “Credits”***
***Support of Industry Customers***
***Alignment of Stars***

## North Carolina Clean Smoke Stacks Act

***NOx & SO2 Caps on Emissions***
***Tons / year***
***Caps per Company - They decide on Controls***
***Phased Compliance; 1 Jan ’07, ‘09, ‘13***
***Actual Reductions in NC***
***Unique Cost Recovery Feature***
***Recommendations on Hg & CO2; Sep ‘05***
***Reduction Credits Held by the State***
***SAMI: Greatest AQ Benefit for a State Comes from Reductions in that State; but, Controls in All States Needed to Fully Solve AQ Problems***

## Utility Company Plans

**Initial Plans Submitted**
**22 SO2  Scrubbers**
**36 SCR / SNCR Units **
**Most with Combustion Controls**
**NOx Controls in Place Starting in 2001**
**SO2 Scrubbers Scheduled to be in Starting in 2005**

## Emissions Reductions Under Clean Smokestacks Bill

**50,000**

**100,000**

**150,000**

**200,000**

**250,000**

**300,000**

**350,000**

**400,000**

**450,000**

**500,000**

**1998**

**2007**

**2009**

**1998**

**2009**

**2013**

**NOx**
**(tons/year)**

**SO****2**
**(tons/year)**

**245,000**

**60,000**

**56,000**

**489,000**

**250,000**

**130,000**

## Slide 7

## Across Class I areas and meteorological conditions, SO4 is largest contributor to aerosol mass.  Organic aerosols are second largest contributor; NO3 and soils have small contributions
Most of changes in visibility in SAMI strategies due to changes in SO2 emissions

***Most of changes in visibility in SAMI strategies due to changes in SO2 emissions***

***SAMI Key Findings:  Visibility****** ***

##  Observations:  SO2 Sensitivity Maps

***State to State Comparison: ***
***In general, the largest change in SO4 aerosol or SO4 deposition in a SAMI state is due to SO2 emissions changes in that state***
***Each SAMI state contributes to change in SO4 aerosol or SO4 deposition in neighboring SAMI states.***

## (Class 5 day)

**a 10% Reduction of  2010 Strategy A2 SO****2**** Emissions**

**(****Class 5 day)**

## Annual SO4 Aerosol  Response to 10% Reduction in 

**Cohutta, GA**

**Joyce Kilmer,**
**NC**

**Look Rock,**
**(Smokies), TN **

**Shining**
**Rock, NC**

**Linville**
**Gorge, NC**

**James River **
**Face, VA**

**Shenanhoah,**
** ****VA**

**Otter Creek,**
** ****VA**

**Dolly Sods,**
**WV**

**Annual SO4 Aerosol  Response to 10% Reduction in **
**SO2 Emissions from 2010 A2 strategy**

**SO4 Aerosol Sensitivity (%)**

## References / Contact

***Text of Act: http://www.ncleg.net/html2001/bills/AllVersions/Senate/S1078vc.html***
***www.ncair.org***
***Brock.Nicholson@ncmail.net               919-715-0587***