Thanks for your responses. A new proctor was run on the soil that looked the same as the existing proctor. The soil that came from deeper cuts weighed about 10% more but looked almost identical.
P.S. - Your numerous responses to such a detailed question has prompted me to make a donation to...
Can anyone explain the procedure and significane of running a one-point proctor in the field and adjusting the optimum weight? I ask this question because we have a project with brown silty clay with a standard proctor of 99pcf with field density tests consistently over 100% standard proctor...
I have a related question. Can someone explain the procedure and significance of running a "one point proctor" in the field and adjusting optimum weight prior to reporting % compaction on material that is essientially uniform.