Samples that drive quality

"I don’t think we would have the quality of the AB program that we do [without] having their involvement, maintaining the standard that we do. I think it’s helped us immensely."


New Hampshire Department of Transportation

Alan Rawson, Bureau of Materials & Research Administrator

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55+ years of experience
3,000+
PSP participants
23,000+
samples shipped per year
1,000
laboratory assessments per year
2,000+
accredited labs









Proficiency Sample Schedule

Sample TypeRoundEnrollment CutoffShip Date*Non-Receipt*Closing DateFinal Report
Aggregate Degradation1/212/9/20211/20/20222/3/20223/17/20224/7/2022
Soil Classification and Compaction185/1861/27/20223/10/20223/24/20225/5/20225/19/2022
Soil Resistance R-Value185/1862/3/20223/17/20223/31/20225/12/20225/26/2022
Soil California Bearing Ratio (CBR)185/1862/3/20223/17/20223/31/20225/12/20225/26/2022
Performance Graded Asphalt Binder267/2682/10/20223/24/20224/7/20225/19/20226/2/2022
Viscosity Graded Asphalt Cement267/2682/17/20223/31/20224/14/20225/26/20226/9/2022
Asphalt Mixture Hveem Design77/783/31/20225/12/20225/26/20227/7/20227/21/2022
Asphalt Mixture Marshall Design77/783/31/20225/12/20225/26/20227/7/20227/21/2022
Asphalt Mixture Gyratory53/544/7/20225/19/20226/2/20227/14/20227/28/2022
Aggregate Gradation and Gravity1/25/26/20227/7/20227/21/20229/1/20229/15/2022
Unmodified Emulsified Asphalt77/786/16/20227/28/20228/11/20229/22/202210/6/2022
Performance Graded Asphalt Binder269/2707/21/20229/1/20229/15/202210/27/202211/17/2022
Paint69/708/4/20229/15/20229/29/202211/10/202212/1/2022
Viscosity Graded Asphalt Cement269/2708/4/20229/15/20229/29/202211/10/202211/24/2022
Slurry and Micro Systems11/127/21/20229/29/202210/13/202211/24/202212/8/2022
Asphalt Mixture Solvent Extraction97/989/1/202210/13/202210/27/202212/8/202212/22/2022
Asphalt Mixture Ignition Oven45/469/29/202211/10/202211/24/20221/5/20231/19/2023
Aggregate Degradation3/412/8/20221/19/20232/2/20233/16/20233/30/2023
Soil Classification and Compaction187/1881/26/20233/9/20233/23/20235/4/20235/18/2023
Soil Resistance R-Value187/1882/2/20233/16/20233/30/20235/11/20235/25/2023
Soil California Bearing Ratio (CBR)187/1882/2/20233/16/20233/30/20235/11/20235/25/2023
Viscosity Graded Asphalt Cement271/2722/16/20233/30/20234/13/20235/25/20236/8/2023
Performance Graded Asphalt Binder271/2722/23/20234/6/20234/20/20236/1/20236/15/2023
Asphalt Mixture Marshall Design79/804/13/20235/25/20236/8/20237/20/20238/3/2023
Asphalt Mixture Hveem Design by California Kneading Compaction1/24/13/20235/25/20236/8/20237/20/20238/3/2023
Asphalt Mixture Hveem Design by 4-in Gyratory Compaction1/24/13/20235/25/20236/8/20237/20/20238/3/2023
Asphalt Mixture Hveem Design by Gyratory Shear Compaction1/24/13/20235/25/20236/8/20237/20/20238/3/2023
Asphalt Mixture Gyratory55/564/20/20236/1/20236/15/20237/27/20238/10/2023
Polymer-Modified Emulsified Asphalt1/25/4/20236/15/20236/29/20238/10/20238/24/2023
Aggregate Gradation and Gravity3/46/8/20237/20/20238/3/20239/14/20239/28/2023
Unmodified Emulsified Asphalt79/807/13/20238/24/20239/7/202310/19/202311/2/2023
Performance Graded Asphalt Binder273/2747/27/20239/7/20239/21/202311/2/202311/16/2023
Paint71/728/3/20239/14/20239/28/202311/9/202311/23/2023
Slurry and Micro Systems13/147/21/20239/14/20239/28/202311/9/202311/23/2023
Viscosity Graded Asphalt Cement273/2748/10/20239/21/202310/5/202311/16/202311/30/2023
Asphalt Mixture Solvent Extraction99/1008/31/202310/12/202310/26/202312/7/202312/21/2023
Asphalt Mixture Ignition Oven47/489/28/202311/9/202311/23/20231/4/20241/18/2024
Sample TypeRoundEnrollment CutoffShip Date*Non-Receipt*Closing DateFinal Report

NOTE: All dates are subject to change.

*Non-Receipt Date - the date by which your laboratory should receive a sample; please contact us if you have not received your sample by this date

*Closing Date - All testing data must be submitted and confirmed (by the laboratory) on or before this date. Data submitted after this date will not be included in the analysis and ratings will not be received.

*Enrollment Cutoff Date - If your laboratory is enrolled after this date, you will be placed on a Waiting List for that specific sample. If there are enough remaining samples, they will be shipped to your laboratory after the Non-Receipt Date and an invoice will follow by mail.

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