For the Media

November 22, 2013 - US Geological Survey Modeling of PAH Sources Is Flawed, Newly Published Paper Concludes

September 30, 2013 - White Hat Bias Documented in 3rd Data Quality Act Request for Correction Filed by

September 15, 2013 - Sealer Science at ISPAC


August 22, 2012-There are a thousand ways to do an experiment

August 15, 2011-The Facts about Refined Tar Sealers & PAHs-Pavement Maintenance & Reconstruction Magazine

July 8, 2011-Errors contained with Suffolk County, NY Legislature Press

June 20, 2011-Industry letter to Suffolk County Executives, showing Legislation's

June 6, 2011-Suffolk County Legislature Bill To Damage Business And Kill

PAH Underfoot: Contaminated Dust from Coal-Tar Sealcoated Pavement in Widespread in the U.S.-March 11, 2011

Exponent Presentation: Refined Tar Sealers and Urban Sediments-February 4, 2011

Environ Presentation- Sealer Ban: Science…and fiction-February 4, 2011

Battelle Sedimentcon presentation-Environmental Forensics for PAH Source
Management: Pavement Sealants and Sediments-February 9, 2011

Letter to the Editor-In response to Chicago Tribune story dated January 15,
2011-January 24, 20121

Abstract for Presentation-PAHs in Urban Sediments: Forensic approach for assessing the relative contribution of atmospheric deposition and parking lot sealant. SETAC North American November 10, 2010

December 4, 2010- Polycyclic Aromatic Hydrocarbons (PAHs) in Austin Sediments After a Ban on Pavement Sealers, Robert P. DeMott; Thomas D. Gauthier; James M. Wiersema; Geoffrey Crenson, Environmental Forensics, Volume 11, Issue 4 December 2010 , pages 372 – 38

“BPA:DOA”, Jon Entine-American Enterprise Institute, October 27, 2010

"What the Green Movement Got Wrong: Greens come to see the error of their ways”, Charles, November 8, 2010.

What do ppm, ppb, ppt mean?- September 21st, 2010

Benefits of Preventative Maintenance Pavement Sealers- September 14th, 2010

What you should know about PAHs-Stormwater Magazine September 2010 Issue

Environmental Forensics Case Studies for the Non-Technical Person- July 12, 2010

PCTC Response to DC Brochure- May 26, 2010

Questionaire regarding MSNBC story/USGS Dust Study- May 3, 2010

Questionaire regarding Washington, DC Refined Tar Based Sealer Brochure-May 3, 2010

Executive Summary-PCTC Review of USGS Dust Study- May 3, 2010

Springfield News Leader: Geoffrey Butler Letter to the Editor- April 18, 2010

Springfield New Leader: PCTC Letter to the Editor- April 20, 2010

Pavement Magazine: Defending Refined Coal Tar-based Sealer- March 24, 2010

 PCTC response to MSNBC Internet Story on The Alleged Tracking of Refined Tar - Based Pavement Sealants Into Homes - January 14, 2010

Op Ed: Proposed Sealant Ban Based on Faulty Research-News Leader Springfield MO
January 16, 2010

 Abstract for Presentation - Analysis of PAH Concentrations Detected in Austin Texas Stream Sediments Following a Ban on the Use of Coal Tar Sealers - November 2008

 You Can Use Refined Coal Tar Sealer Safely-Air quality studies show emissions are well below occupational health limits

 Parking Lot Sealants and PAHs Fact Sheet-January 2010

 ASTM Standard Specification for Road Tar-January 2010

 Article - USGS backs off Coal Tar Seal Claims - March 2007.

 Article - Austin Coal Tar ban based on flawed study, bad science - February 2007