Obtaining a Medical History and Vital Signs Questions taken from Chapter 11 of Emergency Medical Responder - First on Scene (9th Edition) Progress Indicator: Question 2 of 18 2.  If a normal work shift is not achieved when sampling a DWP with a CPDM, the sample file must be _____________. Choices: discarded and the reason recorded in the certified sampler’s notes transmitted to MSHA with a notation by the person certified in sampling stating that the sample was not taken on a normal work shift re-sampled the next shift even though it is raining printed and compared to the last sample taken