TNI Logo The NELAC Institute

Proficiency Testing Program Executive Committee

The purpose of the PT Program Executive Committee is to establish and maintain a national PT program to support a national environmental accreditation program that contains the following elements:

  • Fields of Proficiency Testing (analytes, concentrations, matrices and acceptance limits) are appropriate for the scope of environmental monitoring performed in the United States
  • All organizations providing PT samples to laboratories are recognized as competent to do so.

The PT Executive Committee consists of 5 to 10 individuals with balanced representation of all stakeholder groups in TNI.

Conference Calls: 3rd Thursday, 1 pm ET

Contact the Committee Chair or Program Administrator to participate in the calls of this committee.

Note: On June 9, 2010, this committee was renamed the Proficiency Testing Executive Committee to reflect a change in the TNI bylaws. Documents such as meeting minutes may show the previous name of this committee, Proficiency Testing Board.

Open All  Close All

Maria Friedman, Chair
State Water Resources Control Board
Glendale, CA
maria.friedman@waterboards.ca.gov

Dixie Marlin, Vice Chair
Marlin Quality Management, LLC
Mt. Juliet, TN
marlinquality@gmail.com

Ilona Taunton, Program Administrator
The NELAC Institute
Mill Spring, NC
ilona.taunton@nelac-institute.org

Gil Dichter
IDEXX Water
Westbrook, ME
gil-dichter@idexx.com

Jennifer Duhon
Millipore Sigma
Laramie, WY
jennifer.duhon@sial.com

Patrick Garrity
KY Division of Water
Frankfort, KY
patrick.garrity@ky.gov

Scott Haas
Environmental Testing, Inc.
Oklahoma City, OK
SHaas@etilab.com

Michella Karapondo
USEPA
Cincinnati, OH
karapondo.michella@epa.gov

Carl Kircher
New York State DOH
carl.kircher@flhealth.gov

Jennifer Mullins
Upper Occoquan Service Authority
Centreville, VA
Jennifer.mullins@uosa.org

Matt Sica
ANAB
Alexandria, VA
msica@anab.org

Eric Smith
ALS Laboratory Group
Jacksonville, FL
eric.smith@alsglobal.com

Andy Valkenberg
avalkenburg@energylab.com


November 30, 2017
October 19, 2017
September 21, 2017
August 24, 2017
August 7, 2017
July 20, 2017
June 29, 2017
May 26, 2017
April 20, 2017
March 16, 2017
February 16, 2017
January 24, 2017
January 19, 2017

December 15, 2016
November 17, 2016
October 20, 2016
September 22, 2016
August 25, 2016
August 9, 2016
July 28, 2016
June 16, 2016
PT Provider Meeting 5-26-2016
May 19, 2016
April 21, 2016
March 24, 2016
February 25, 2016
January 26, 2016

December 17, 2015
November 19, 2015
October 15, 2015
September 24, 2015
August 20, 2015
July 14, 2015
June 18, 2015
May 21, 2015
April 16, 2015
March 19, 2015
February 19, 2015
February 3, 2015
January 22, 2015

December 18, 2014
November 20, 2014
October 16, 2014
September 18, 2014
August 21, 2014
August 4, 2014
June 19, 2014
May 15, 2014
April 17, 2014
March 20, 2014
February 20, 2014
January 27, 2014
January 16, 2014

December 19, 2013
November 21, 2013
October 17, 2013
September 26, 2013
September 13, 2013
August 6, 2013
July 25, 2013
June 27, 2013
May 16, 2013
April 18, 2013
March 21, 2013
February 14, 2013
January 14, 2013

December 20, 2012
November 15, 2012
October 25, 2012
September 27, 2012
August 8, 2012
July 26, 2012
May 17, 2012
April 19, 2012
March 15, 2012
January 31, 2012
January 19, 2012

December 15, 2011
November 17, 2011
October 20, 2011
September 15, 2011
August 16, 2011
July 21, 2011
June 16, 2011
May 19, 2011
April 21, 2011
March 17, 2011
March 10, 2011
February 17, 2011
February 1, 2011
January 20, 2011

December 16, 2010
December 2, 2010
November 18, 2010
October 21, 2010
September 16, 2010
August 19, 2010
August 11, 2010
July 15, 2010
June 17, 2010
June 3, 2010
May 20, 2010
April 15, 2010
March 18, 2010
March 4, 2010
February 18, 2010
January 26, 2010
January 21, 2010

December 17, 2009
November 19, 2009
November 5, 2009
October 15, 2009
September 17, 2009
September 3, 2009
August 20, 2009
July 16, 2009
April 16, 2009
March 19, 2009
February 19, 2009
January 14, 2009

December 18, 2008
December 4, 2008
November 20, 2008
October 16, 2008
September 18, 2008
August 12, 2008
July 17, 2008
April 17, 2008
March 20, 2008
February 21, 2008
January 16, 2008

November 15, 2007
October 18, 2007
September 20, 2007
August 21, 2007
July 19, 2007
June 21, 2007
May 17, 2007
May 3, 2007
April 19, 2007
March 21, 2007
February 21, 2007
January 31, 2007
January 17, 2007

November 24, 2015
October 20, 2015
October 6, 2015
September 15, 2015
September 1, 2015
June 2, 2015
May 19, 2015
April 21, 2015
April 7, 2015
March 24, 2015
March 10, 2015
February 24, 2015
January 27, 2015
January 20, 2015

December 16, 2014
November 18, 2014
November 4, 2014
October 21, 2014
October 7, 2014
September 23, 2014
September 9, 2014
August 26, 2014
July 1, 2014
June 17, 2014
June 3, 2014
May 20, 2014
May 6, 2014
April 22, 2014
April 8, 2014
March 25, 2014
March 11, 2014
February 25, 2014
February 11, 2014
January 14, 2014

December 17, 2013
November 5, 2013
October 22, 2013
October 8, 2013
September 24, 2013
September 10, 2013
July 23, 2013
July 9, 2013
June 25, 2013
May 14, 2013
April 30, 2013
April 16, 2013
April 2, 2013

December 4, 2012
November 20, 2012
November 6, 2012
October 23, 2012
October 9, 2012
September 25, 2012
September 11, 2012
September 4, 2012
August 14, 2012
July 31, 2012
July 17, 2012
July 3, 2012
June 26, 2012
June 5, 2012
May 22, 2012
May 8, 2012
April 24, 2012
April 10, 2012
March 13, 2012
February 28, 2012
January 17, 2012
January 3, 2012

December 13, 2011
November 1, 2011
October 18, 2011
October 4, 2011
September 20, 2011
August 23, 2011
August 9, 2011
June 28, 2011
June 14, 2011
May 31, 2011
May 17, 2011
April 19, 2011
April 5, 2011
March 22, 2011
March 8, 2011
February 22, 2011
February 8, 2011
January 25, 2011
January 11, 2011
January 4, 2011

December 14, 2010
November 30, 2010
November 2, 2010
October 26, 2010
October 19, 2010
October 12, 2010
October 5, 2010
September 28, 2010
September 21, 2010
September 14, 2010
September 7, 2010
August 31, 2010
August 24, 2010
August 17, 2010
August 3, 2010
July 27, 2010
July 20, 2010
July 13, 2010
June 29, 2010
June 22, 2010
June 15, 2010
June 8, 2010
May 25, 2010
May 18, 2010
May 11, 2010
May 4, 2010
April 20, 2010
April 6, 2010
March 30, 2010
March 23, 2010
March 16, 2010
March 9, 2010
February 23, 2010
February 16, 2010
February 9, 2010
February 2, 2010
January 19, 2010
January 12, 2010
January 5, 2010

December 22, 2009
December 15, 2009
December 8, 2009
December 1, 2009
November 24, 2009
November 17, 2009
November 10, 2009
November 3, 2009
October 27, 2009
October 20, 2009
October 6, 2009
September 22, 2009
September 8, 2009
August 25, 2009
July 28, 2009
July 14, 2009
June 30, 2009
June 16, 2009
June 2, 2009
May 19, 2009
May 5, 2009
April 7, 2009
March 24, 2009
March 10, 2009
February 24, 2009
February 3, 2009
January 20, 2009

December 16, 2008
November 18, 2008
October 30, 2008

Current Projects:

Chemistry FoPT changes
Toxicity FoPT changes
Oversight evaluation of PTOB

Current Needs: