a. Ballast shall be measured on a per ton basis and payment shall be made on the number of tons of
acceptable materials furnished. No allowance will be made for moisture content of ballast materials
loaded by any acceptable method. Weight tickets or records shall be maintained for a period of not less
than six months for reference.
b. The number of tons shall be determined by one of the following methods and shall be approved by the
purchaser:
(1) Certified scale weights as determined by track scales (static or in motion weighing) truck scales or
belt scales which load directly into the railcar.
(2) Average weight agreements as mutually agreed upon by the purchaser and producer. The average
net weight for each type and series of railcars shall be determined by the purchaser and producer to
establish the average weight agreement per car. The average weight in the specified or type of cars
shall be checked quarterly by the purchaser or as designated by the Engineer. The average weight
will be calculated on lots of not less than ten (10) cars. The purchaser shall advise the producer if
there is any variance in the average weight of the cars selected. The purchaser and the supplier will
jointly make any changes in the loading methods to insure compliance with the weight agreement.