About Us

Parisa P. Ellisor, PhD, CSP, REM, PE (President)

Dr. Parisa Ellisor has over 25 years of comprehensive multi-industry Environmental, Health and Safety management and technical background at national and international corporate, divisional, and business unit levels: permitting, compliance, corporate level and site specific level plans and procedures, permitting monitoring, recordkeeping and reporting for chemical, coating, etching, fabrication, manufacturing, testing, facility maintenance, wastewater treatment plants (process and sanitary treatment), air pollution abatement systems (incinerator, acid scrubbers, bag house) and operations at Chemical, Energy, Oil & Gas, Pulp and Paper, Lighting, and Semiconductor industries during construction, startup, operation, cleaning/decontamination, decommissioning or shutdown.


B.S., Chemical Engineering, University of Texas at Austin – 1987

M.S., Environmental Sciences, University of Texas – 1993

PhD, Public Policy and Administration, Walden University, 2013

Professional Registrations and Certifications:

Professional Engineer: Texas

Registered Environmental Manager

Certified Safety Professional

Certified Environmental Auditor

Certified Environmental and Safety Compliance Officer

Certified Continual Improvement for Social Responsibility Practitioner & Expert

Certified Operational Excellence Black Belt

Certified 6 Sigma Green Belt

Certified Lean Green Belt

PAK Global Environmental Consulting, LLC's Registrations and Certifications

PAK Global Environmental Consulting, LLC (PAK) is a registered Professional Engineering Firm (Registration No. F - 18793) with the Texas Board of Professional Engineers. 

PAK is certified as:

- A Woman Owned Small Business (WOSB) with WBENC

- A Women's Business Enterprise (WBE) with WBENC

- A Women Business Enterprise (WBE) with City of Houston

- A Texas Historically Underutilized Business (HUB) with Texas Comptroller of Public Accounts

- A Small Business Enterprise (SBE) with Port of Houston 

- A Small Business Enterprise (SBE) with Metro (Pending)

PAK is also Part of the Hire Houston First Program