1. WESTAR Spring 2008 Park City, UT
Oil and Gas Issues
WESTAR Spring 2008
Park City, UT

2. Issue: Emission Factors
Completions, venting/flaring, fraccing
Tanks
Dehydration units
Pumps
Pneumatic controllers
Well blow downs
Pipeline venting
Truck traffic
Fugitives
Malfunctioning systems

3. Uncertainties Uncontrolled versus controlled emissions
Do we account for all the sources?
Are controls reliable?

4. VOCs or NOx? If ozone is the issue, what should be controlled?
Modeling tools?
Rural versus urban?
Model performance?
Episodic conditions?
Wyoming so far: $1.1 million and growing

5. Feds v. States Coordination issues with BLM, DEQ, EPA
State capacity to evaluate regional impacts
Inconsistent emission inventories, modeling assumptions, consideration of future projects
Conflicts with EPA R8
Visibility issues

6. Future Actions
One or more revisions to Wyoming’s oil and gas BACT guidance:
Add controls for all pumps; replace pneumatic controllers; control pipeline venting; control water tanks; control well blowdowns; control fugitives; expand more stringent JPDA requirements to ‘other concentrated development areas’.
Control drill rig emissions
Drive compression BACT lower
Modeling
Additional controls to prevent nonattainment
To avoid episodic conditions;
To lower ozone generally