We discuss the results for the most recent soil proficiency samples, including Soil Classification and Compaction, Soil California Bearing Ratio, and Soil Resistance R-Value.

Related information:

• S3 E30: November PSP Insights
• S3 E23: September PSP Insights
• S3 E15: July PSP Insights
• S3 E06: Digging into Soil Classification and Compaction Samples 185/186
• S2 E29: The Proficiency Sample Program Participation Guide and Prerequisites for Accreditation
• S2 E22: Taken from TechEx: Hydrometer Analysis of Fine-Grained Soils
• S1 E30: Inside PSP with Guest Host, Oak Metcalfe
• S1 E24: The transition from ASTM D422 to D6913 and D7928
• S1 E15: FAQ - How and when do I respond to low ratings? 
• S1 E02: Dealing with Repeat Low Ratings

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Related information on this and other episodes can be found at aashtoresource.org.