here is the quote (names removed)
"As far as the plotting of the test results against the proctor curve used, that has been a common practice as a check, of sorts, to assure that the correct proctor is indeed being utilized. When the test results for the density test in question were plotted against the selected proctor for this material, they fell well outside the proctor curve, rather than on or within the curve envelope as one would expect. That being said, I don't know if it is an inappropriate material proctor that was utilized, or the high moisture content in the test that has provided questionable results."
"To get us through this particular test for acceptance, I'm sure XXXXX would need at least a test report that displays the dry density and moisture results that fall within the reasonable expected range as plotted against the proctor curve. If you can provide such report, engineering would be ok recommending approval of the compaction test"
the standard calls for 95%, no reference to Moisture, and while moisture was elevated (22-27%) in silty claye soils it is not out of reason. By the way compaction exceeded the requirement.
I have been doing this for over 30 years and have never heard of the practice.
Has any one else heard of this, and if you have can you tell me how to establish the "reasonable range"