Specifications include, but are not limited to: The TSS Office of State Procurement (TSS OSP) issues this Request for Qualifications (RFQ) on behalf of the Division of Environmental Quality (“DEQ” or “Division”) to obtain responses and a contract for a qualified contractor to carry out On Call Air Quality Modeling and Consulting Services. The Contractor shall carry out Air Quality Modeling and Consulting Services on an as needed basis. Potential projects may include, but are not limited to: 1. Conducting or consulting on photochemical modeling for ozone (O3) NAAQS and fine particulate matter (PM2.5) NAAQS attainment demonstrations and control strategy evaluations. 2. Associated with photochemical modeling and on a Linux platform, conducting or consulting on use of Sparse Matrix Operator Kerner Emissions (SMOKE) or similar preprocessing tools, as well as use of the Atmospheric Model Evaluation Tool (AMET) and Software for Model Attainment Test (SMAT) post-processors. 3. Conducting or consulting on modeling and analyses related to episodic O3 and PM2.5 pollution