OAR 690-210-0280
Access Ports, Dedicated Measuring Tubes and Airlines
(1)
All water supply wells , including wells that have been temporarily removed from service, temporarily abandoned due to a recess in construction, or temporarily abandoned before commencing service, shall be properly covered and shall be equipped with a usable access port with a minimum diameter of 1⁄2- inch for the purpose of determining the water level in the well at any time.(2)
Access ports shall be installed prior to the Water Supply Well Constructor removing the well drilling machine from the well site.(3)
Dedicated measuring tubes that meet the requirements of OAR 690-215-0060 (Access Ports, Dedicated Measuring Tubes and Airlines) are recommended to be installed on all water supply wells at the time of pump installation, pump repair, or pump replacement. Where required, dedicated measuring tubes shall be a minimum of 3⁄4-inch diameter schedule 40 PVC extending to the top of the pump (See Figure 200-5). The 3⁄4-inch diameter dedicated measuring tube may be reduced in size to 1⁄2-inch where it goes through the watertight well cap, but shall not be reduced in size over the length of the pipe.(4)
An airline is not a substitute for a required dedicated measuring tube and, if installed, must enter the well in a location other than the access port.(5)
Access ports, dedicated measuring tubes or airlines on all water supply wells shall be capped and be a minimum of twelve inches above finished ground surface or pumphouse floor (See Figure 210-12) (See Figure 200-5).(6)
Access ports, airlines and dedicated measuring tubes on all water supply wells shall be maintained by the landowner in a condition that will prevent contamination of the groundwater resource, and shall remain free from wire or other obstruction.
Source:
Rule 690-210-0280 — Access Ports, Dedicated Measuring Tubes and Airlines, https://secure.sos.state.or.us/oard/view.action?ruleNumber=690-210-0280.