WRAP/WAQS 2014v1 Shake-Out Study

Introduction

The objectives of the WRAP/WAQS 2014 Platform Development and Shake-Out Study (“Shake-Out Study”) is to develop regional photochemical grid model (PGM) modeling platforms for the western U.S. and 2014 calendar year using existing information. The Shake-Out Study 2014 PGM modeling platforms will be used for regional haze State Implementation Plans (SIPs) and potentially other air quality issues in the western states. The first two phases of the Shake-Out Study were performed during the first four months of 2019 and culminated in version 1 (2014v1) of the annual CMAQ and CAMx PGM 2014 base case simulations, model performance evaluation and documentation as described below.

2014v1 Shake-Out Study Modeling Plan

The initial draft Modeling Plan for the 2014 Shake-Out Study was dated December 31, 2018 and distributed to State, Federal and Local agencies who provided comments that were implemented in a second draft Modeling Plan that was also reviewed. The final 2014 Shake-Out Study Modeling Plan was dated March 9, 2019 and represented the implementation of two rounds of comments. The final Modeling Plan and Response-to-Comments documents can be found at the following links:

Response-to-Comments on First Draft Modeling Plan (2019-02-02) Response-to-Comments on Second Draft Modeling Plan (2019-03-09) Final Modeling Plan (2019-03-09)