(1) You must establish and keep complete and accurate records for all exposure monitoring conducted under this chapter. Make sure the record includes at least the following:

(a) The name, unique identifier, and job classification of both:

(i) The employee sampled;

(ii) All other employees represented by the sampled employee.

(b) An estimate of the exposure for each employee "represented" by this monitoring.

(c) A description of the methods used to obtain exposure monitoring results and evidence of the method's accuracy.

(d) Any environmental conditions that could affect exposure concentration measurements.

(e) A description of the procedure used to obtain representative employee exposure monitoring results.

(f) The operation being monitored.

(g) The date, number, duration, location, and the result of each sample taken.

(h) The type of protective devices worn.

(2) You must maintain documentation that conclusively demonstrates that employee exposure for formaldehyde and the operation where it is used cannot exceed the action level or the 15-minute short-term exposure limit, during any reasonable anticipated conditions.

Such documentation can be based on observations, data, calculation, and previous air monitoring results.

(3) You must keep exposure monitoring records for at least thirty years.