What is the best method for determining the % of organic material in soil. We are screeening soils to remove roots etc to increase useable fill and need to determine the amount of organic material remaining.
We have some lab results that classify soil as SC without corresponding Atterburg limits. The sieve analysis show less than 25% passing a #200 sieve. When questioned how the classification was reached the respons was it was based on field observation. Is it reasonable or possible to discern...