Gradation. Percents passing the given sieve sizes shall be as follows: When test results for the sodium chloride furnished exceed the gradation requirements above, adjustment points will be assessed as follows: ADJUSTMENT POINTS FOR GRADATION Adjustment Points Sieve Size ½in. 3/8in. No.4 No.8 No.30 12.5mm 9.5mm 4.75mm 2.36mm 0.60mm For each 1.0% up to 3.0% Out of Tolerance 1.0 1.0 1.0 1.0 3.0 For each 1.0% > 3.0% Out of Tolerance 1.0 1.0 1.0 1.0 6.0 Gradation adjustment points for the quantity represented shall be the sum of points calculated for up to 3% out of tolerance and the points calculated for greater than 3% out of tolerance. Where Buyers determine that a sample does not meet specifications in chemical composition, moisture and/or gradation, the following shall be the method of determining the final price per ton: First, tons eligible for payment shall be calculated above. Moisture: Second, a deduction, as specified above, will be made for gradation failure. Finally, the deduction will be determined for chemical composition, unless the chemical composition falls below 84.5 percent at which time the entire amount will be paid for as snow and ice abrasives as noted above.
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Sources: Deicing Technology Contract for Road Salt, Contract for Road Salt