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NIGP's talented instructors are a source of inspiration and motivation. These amazing instructors put their heart and soul into teaching and encourage students to never stop learning because anything is possible.




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Contracting Officer
Loudoun County
1 Harrison Street SE
Leesburg, VA 20175
Phone: 571-258-3144
Fax: 540-665-0537
Photo of Ms. Kristy D Varda, NIGP-CPP, CPPO, CPPB

Ms. Kristy D Varda, NIGP-CPP, CPPO, CPPB

Originally from Oklahoma and a proud Oklahoma State University Alum, Kristy spent 10 years as a military spouse before relocating to Virginia from Germany. Kristy completed her Masters in Biotechnology Studies in 2008 and her MBA in 2009 while working in a variety of industries. She began her official procurement career working as a Contract Specialist II for Fairfax County, specializing in procurement for Public Safety, IT and Libraries. In September of 2015, she became the Purchasing Supervisor for Frederick County Public Schools in Winchester, Virginia. Now she is a Capital Contracting Officer for Loudoun County Government. Her passion to help others grow in their procurement profession began with presenting webinars on Sole Sources and Software Procurement. She was part of the NIPG taskforce to write the Best Practices series on technology procurement. Most recently she worked on the team to develop the Pathways specialization course “Foundations of Technology Procurement”. She continues to work to build courses to enhance the learning opportunities for NIGP members as well as teaching both the Legal Aspects and Technology courses.
Retired, Procurement Official
34 Price Lane
Palm Coast, FL 32164
Photo of Ms. Theresa Webb, NIGP-CPP, CPPO, CPPB, C.P.M., M.A.

Ms. Theresa Webb, NIGP-CPP, CPPO, CPPB, C.P.M., M.A.

Theresa Webb, M.A., CPPO, CPPB, C.P.M. has over 30 years of experience in procurement in both the private and public sectors with about 18 years in public sector procurement. In her leadership roles, Theresa has overseen the procurement of goods, services, technology, construction, capital improvement and PCard Administration. She has a Bachelors' in Business Administration and a Masters' degree in Business Management. Theresa is a certified NIGP Instructor, and a current Chair of the NIGP Accreditation Committee. Theresa is a member of NIGP, FAPPO, and Tampa Bay Area Chapter of NIGP, and has been a member of multiple boards, committees, panels, task forces and councils for those organizations over the years. She was recognized by NIGP in 2013 as National Buyer of the Year.
State of Colorado - Retired
6945 Old Ranch Trail
Littleton, CO 80125
Photo of Ms. Christine O. Weber, CPPB, C.P.M.

Ms. Christine O. Weber, CPPB, C.P.M.

Christine has been a procurement professional for over 20 years.Her experience includes 10 years corporate procurement, management, training, and change management for companies in the Washington, D.C. area, such as Macy‘s Northeast, the J C Penney Corporation, and Creative Hairdressers, Inc.

Public procurement experience includes director-level and statewide experience at a wide variety of Colorado agencies, including Colorado State Patrol, University of Colorado, the Colorado Department of Human Services, and the State Purchasing & Contracts Office for Colorado.

She looks forward to supporting your organization with challenging, fun, and effective hands-on approaches to learning. As a seasoned professional, Christine easily relates to new buyers, strategic sourcing staff, or program staff, and also inspires executives responsible for producing cost-effective team results while operating within a challenging political environment.

On the Faculty of:

Practical Specifications Writing

Developing and Managing Requests for Proposals

Introduction to Public Procurement



Ethics: A Survival Kit for Public Procurement

Protests: Managing Options for Positive Results

Director, Contracts and Procurement
San Mateo County Transit District
1250 San Carlos Ave
San Carlos, CA 94070
Photo of Mr. Kevin C. Yin, NIGP-CPP, CPPB

Mr. Kevin C. Yin, NIGP-CPP, CPPB

Kevin has been in procurement for 20+ years, in both private and public sectors. Currently, he is the Director of Contracts and Procurement for the San Mateo County Transit District in San Carlos, California. He and his team are responsible for developing and administering the District's procurement policies and procedures, and all procurement activities.

Kevin's thoughts on learning... 1) You're never too old to learn. 2) It's forever. No one can ever take that knowledge away from you. 3) Learning should be fun (your brain may experience a bit pain, but it's temporary). Kevin is an active member at the Norther CA Chapter of NIGP, where he is serving as the Chapter Vice President, and at the National level, where is a certified NIGP Instructor. Kevin has served on committees and on the Board of the OPPA Chapter of NIGP (Oregon), including serving as the OPPA President during FY2008-2009. Also, he has served as the Vice Chair of the NIGP Member Council.

Kevin graduated from the University of Oregon (Eugene, Oregon) in 1993 with BAs in Finance, Marketing, and Psychology. GO DUCKS!

Kevin lives in the Bay Area in California. He is married to Kelly for over 25 years. They have two children, Ethan (19) and Abbie (17).

On the Faculty of:
CPPB Prep /
Developing and Managing RFPs in the Public Sector /
Introduction to Public Procurement

University of Alberta - Supply Management
2 Eden Court
St. Albert, AB
T8N 6L1
Phone: 780-419-2370
Fax: 000-000-0000
Photo of Mrs. Donna Zeeh Chorley

Mrs. Donna Zeeh Chorley

Donna Zeeh Chorley has worked within Public Procurement since 1981 in a variety of capacities from administration to management. She has been fortunate in her career to have worked with and bought a diverse selection of commodities and services, including construction. Donna currently is a Procurement Specialist for Procurement and Contract Management within the University of Alberta in Edmonton, Alberta, Canada. She has both her CPPO and CPPB Certifications and has been teaching with NIGP since 1997. Donna is a Master Instructor for NIGP and has served on the Executive and various Committees within NIGP’s Canada West Chapter since 1989 including Vice-President (2009 & 2010), President (2011 to 2014), and Past President (2015). Her focus in teaching is to make the valuable learning experience open, educational, memorable and fun.

On the Faculty of:
Ethics: A Survival Kit for Public Procurement
Planning, Scheduling and Requirements Analysis

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