(1) All wells shall be equipped with an access port 1/2 inch minimum that will allow for the unobstructed measurement of the depth to water surface or a pressure gauge that will indicate the shut-in pressure of a flowing well (see Figure 5 at the end of this subchapter) . � The access ports and pressure gauges or other openings in the cover shall be sealed or capped to prevent entrance of surface water or foreign material into the well.

(2) Removable caps are acceptable as access ports.