ASTM International Standard Practice foReporting Opinions of Scientific or Technical Experts ASTM E620-04

1.1 This practice covers the scope of information to be contained in formal written technical reports which express the opinions of the scientific or technical expert with respect to the study of items that are or may reasonably be expected to be the subject of criminal or civil litigation. 1.2 If compliance with this standard is claimed, the justifications for any deviations from this standard must be documented. 1.3 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.