Fees for testing each sample shall include the time required for actual testing, preparation of test records, issuing the certificate, and filing of samples and documents, with:

(a) Fees assessed based on the formulas in § 75.41.

(b) A minimum fee of 1 hour per sample for testing shall be charged.

(c) The fee for a preliminary report issued prior to completion of testing shall be assessed in accordance with paragraph (a) of this section.