Mr. Holden is a Managing Consultant in the Little Rock office. He has managed complex air permitting projects, regulatory applicability and compliance, TRI, and ambient dispersion modeling studies. Mr. Holden is an active member of the Arkansas Environmental Federation (AEF) air committee and a regular speaker on Arkansas air issues at AEF workshops.During Mr. Holden’s 14 years of Clean Air Act experience, he has performed regulatory analyses, compliance audits, Title V operating permit and PSD permit applications, and dispersion modeling analyses for various industries, including chemical manufacturing, petroleum refining, power generation, and wood products manufacturing in over 17 states and 6 of the 10 EPA Regions.

As an Environmental Engineer with GBMc & Associates, I have worked with industrial and institutional clients in Arkansas, Arizona, Alabama, Florida, Georgia, Indiana, Michigan, Mississippi, Ohio, Oklahoma, Pennsylvania, Texas, Virginia, and Washington. My responsibilities have included preparing air permit applications, calculations, and applicability determinations for Prevention of Significant Deterioration (PSD), Title V, Minor Source, General, Permit by Rule, and Registration permits as well as conducting air dispersion modeling in order to demonstrate compliance with the National Ambient Air Quality Standards (NAAQS) and state air regulated pollutants in Arkansas, Georgia, Idaho, Ohio, Oklahoma, Texas, and Washington.I have prepared and reviewed a variety of regulatory reports including New Source Performance Standards (NSPS) and National Emission Standard of Hazardous Air Pollutant (NESHAP) notification of compliance status, emission inventories, annual compliance certifications, Continuous Emission Monitoring System (CEMS) reports, semi-annual monitoring reports, deviation reports, and Greenhouse Gas Mandatory Reporting Rule reports. I have assisted clients with a variety of environmental compliance projects. I have developed compliance handbooks to provide guidance with regulatory compliance, electronic spreadsheets to assist in tracking compliance, and permit parsing. He has assisted clients with NSPS and NESHAP permitting and compliance.

Developed a procedure to fabricate biodegradable nanoparticles for targeted drug delivery system. Tasks included:• Identifying the parameters that affect particle aggregation • Developing a written procedure to reduce the particle formation size • Submitting weekly written reports and monthly oral presentations

Developed a procedure to coat silica core nanoparticles with a fluorescent dye for in vivo drug tracking. Tasks included:• Developing a quality control system and the day-to-day research plans• Conducting planned experiments and recording observations and results • Training a research technician to conduct experiments • Submitting final written and oral research reports