OAR 333-061-0335: Sample Collection

(1) Only persons who have knowledge of the appropriate procedures for the collection and handling of the water samples for arsenic, nitrate, and total coliform bacteria and who have experience in this area shall collect the samples. These persons include Registered Sanitarians, certified water system operators, well drillers, pump installers, and lab technicians. Specific instructions for the collection, preservation, handling and transport of the samples may be obtained from certified laboratories, county health departments or the Authority and must be strictly adhered to. (2) The samples must be drawn from the source prior to any form of water treatment. Samples may be collected after treatment injection points where water treatment has been bypassed or temporarily disabled. (3) In the event that the well has been shock chlorinated, no follow up samples shall be taken until five days have elapsed.