Final Documents
WRAP PRP18 Emissions Inventory (06/16/07)
The objective of this project is to provide the technical basis for making preliminary evaluations of reasonable progress toward individual Class I area visibility goals by the WRAP. This was done by updating the WRAP region 2018 point and area sources emission inventory projections from the 2018 Base Case version 1 project, completed by Eastern Research Group, Inc. (ERG) and ENVIRON in January 2006. The resulting emissions inventory is the WRAP region Preliminary Reasonable Progress emissions inventory for 2018 (PRP18).
The scope of this project was purposely limited and focused on the most significant point and area sources of 2018 emissions in order to complete the work in a timely and efficient manner for both the State and Local (S/L) agencies reviewing the data and providing comments, as well as for ERG, performing the analysis and making the updates.
This FINAL technical memo describes the project scope, explains the methodology used to compile data and prepare the WRAP 2018 PRP emissions inventory, and presents summary results for the WRAP region and detailed results for each jurisdiction PDF
WRAP staff telephoned each WRAP state in early May to discuss application of presumptive BART SO2 emissions rates and review other changes noted in an earlier draft of the ERG technical memo. This spreadsheet summarizes all comments received from the S/L agencies regarding the previous 2018b base case inventory, and the responses ERG took to address these comments. In addition the spreadsheet identifies those issues that were either not identified in time, or were judged to be more appropriately addressed in planned revisions to the baseline period (2000-04) and Final Reasonable Progress 2018 (FRP18) emission inventories targeted for late 2007 or early 2008 XLS
Scope of Work: WRAP 2018 Preliminary Reasonable Progress Emissions Inventory Analysis PDF or DOC
Baseline and 2018 SO2 Emission Inventory for Non-EGUs in the 5 States Participating in the Western Backstop Program (11/20/06)
- Final Pechan Report PDF or DOC
- Summary Presentation PDF or PPT
2018 WRAP Base Case Inventory for Point and Area Sources (Version 1)
On behalf of the SSJF, and under the direction of the Projections Work Group, ERG has developed the 2018 base case inventory (Version 1) for point and area sources in the WRAP states. This inventory is based upon the recently QA'd and revised 2002 WRAP point and area source inventory, and various adjustment, control, and growth factors. A special method was used for electric generating units (EGUs) to address projections of electricity generation in the Western states between 2002 and 2018. The results of the 2018 base case (Version 1) are under review by the WRAP states/local agencies, tribes, and other stakeholders. ERG's deliverables include the Version 1 report and a variety of emission summaries, including side-by-side comparisons of the 2018 base case (Version 1) to the revised 2002 inventory for point and area sources. Please contact Tom Moore with questions and comments. PDF (1/25/06)
2002 WRAP Point and Area Source Inventory
On behalf of the SSJF, ERG has completed a quality assurance review and revision of the 2002 point and area source inventory. This review and subsequent revisions to the inventory addressed completeness (i.e., geographic coverage, pollutant coverage, and control device information), and possible outliers (i.e., identified facility-, source category-, and county-level problems by comparing to other similar inventories). Also, changes submitted by state, local, and tribal agencies to U.S. EPA in June 2005 as part of the NEI review process have been incorporated. Other work conducted by ERG and ENVIRON have been incorporated into the revised inventory, including new tribal point source emissions and new/revised area source emissions for oil and gas exploration. Please contact Tom Moore with questions and comments. PDF (1/27/06)
- 2002 WRAP Area Sources, by County XLS
- 2002 WRAP Point Sources, by County XLS
Draft Documents
Archived Documents
2018 Response-to-Comments Table
ERG prepared a table of comments received on the draft 2018 WRAP point and area source base case projections, along with responses. The table indicates which agency/person made the comment, paraphrases each comments, and describes how ERG addressed the comment within the 2018 projection calculation, or report. PDF (12/21/05)
2018 Base Case (Version 1) Area and Point Source EI Spreadsheets, by State and Tribe. These files contain the detailed calculations that were used to develop the 2018 base case (Version 1) emissions inventory. There is one spreadsheet for each state and one for all tribes (combined). For California, a file containing the growth and control factors is provided. (Zipped XLS)
- Tribes ZIP (1.3MB)
- Alaska ZIP (3MB)
- Arizona ZIP (2.6MB)
- California ZIP (growth & control, 1MB)
- Colorado ZIP (9.7MB)
- Idaho ZIP (1.8MB)
- Montana ZIP (4.2MB)
- Nevada ZIP (2.6MB)
- New Mexico ZIP (5.6MB)
- North Dakota ZIP (2.6MB)
- Oregon ZIP (2.5MB)
- South Dakota ZIP (2.4MB)
- Utah ZIP (6.7MB)
- Washington ZIP (3.5MB)
- Wyoming ZIP (2.8MB)
ERG Status Report to Emissions Forum (09/27/05) PDF or PPT (2.2MB)
ERG Status Report to the WRAP Board (05/17/05) PDF
Part F Table (3/14/05) This table contains the findings to-date of the interviews with state and local air agencies to collecting information on point sources related to the post-2002 timeframe (sources coming on line or retiring after 2002, emission limits resulting from consent decrees in effect after 2002, etc.). These data will be used to quantify the "adjustment" and "control" factors listed on the projections calculations spreadsheet.
- Part F Table XLS (08/10/05)
- Part F Table XLS (04/07/05)
- Part F Table XLS (03/14/05)
ERG Work Plan for Projections Task 1.C PDF or DOC (01/06/05)
Call Notes
Work Group Members
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