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~• OVERBURDEN REPORT pH All samples tested ranged in value from 6.5-7,9, Wyoming Guideline Nd. 3 indicates this has a goad soil suitability rating. EC All samples tested reported values less than 4, Wyoming Guideline No. 3 indicates this has a good soil suitability rating. Sat % A11 samples tested ranged from 38%-55%, Wyoming Guideline No. 3 indicates this has a good-fair soil suitability rating. SAR All samples tested reported values tens than ,6, Wyoming Guideline No. 3 indicates this has a good soil suitability rating. Nitrate This does appear to be a problem as N can be easily added Nitrogen to the overburden as needed. Phosphorus A11 samples tested fell within the 0-7 ppm recommendations contained in the Guide to Fertilizer Recommendations in Colorado. It is anticipate t at at time or seeding s. acre of P 0 will be added to the overburden. It does i ~ hi ill b bl • not appear tha s w e a ser ous pro em. C Potassium Of all the samples tested only one had a concentration less than 60 ppm, and that sample had a concentration of 56 ppm. It appears that potassium will not be a problem. Texture Of all the samples only two reported a SIC texture class (also which indicated this has a poor soil suitability. All the addresses others were either CL, L-CL, or L, which have a fair (CL) % sand, or good (L) soil suitability. Given the amount of mixing silt, clay) that will occur during removal and replacement, it does not appear that texture will be a problem. Refer to Wyoming Guideline No. 3 far texture classification and rating. Aluminum Munshower (1983) advised that aluminum does not to be analyzed unless the overburden pH is less than 5. This is due to the fact that the presence of exchangeable aluminum is very limited in environments with a pH greater than 5. Given the pH of the overburden (6.9 and 6.5) and the low concentration of aluminum (<0.2 ppm) it is not anticipated that aluminum toxicity will be a problem. Copper The samples in which this parameter was analyzed were from depths of 30"-36". This material is not proposed as a plant growth media as the top 6" of the overburden will be removed and stockpiled for reclamation use. Therefore, copper toxicity should not be a problem. . ~.