(a) General.

1. (1) Well seals or caps installed on wells shall be securely capped.
2. (2) The seal may provide ventilation but shall be sufficiently tight and secure to prohibit foreign objects, insects, and other creatures from entering the well.
3. (3) The well seal shall be secure to prohibit entrance to the well from unauthorized persons without tools or excessive physical exertion.

(b) Timing.

1. (1) The well seal or cap shall be installed immediately upon completion of the well and prior to departure of the driller and or contractor or his or her drilling equipment from the well site.
2. (2) An effort should be made by the driller or contractor to ensure that the well seal or cap provided/installed is compatible to the type of pump and pipe to be installed.

(c) Seals or caps when pump installed.

1. (1) Well seals or caps shall be installed on all water wells after pump installation and shall be securely capped.
2. (2) The seal may provide ventilation but be sufficiently tight and secure to prohibit foreign objects, contamination, insects, and other pests from entering the well.
3. (3) The well seal shall be secure to prohibit entrance to the well from unauthorized persons without tools or excessive physical exertion.
4. (4) All wells in consolidated areas will be vented with insect-proof vents.
5. (5) If the well is located inside a building it shall be vented to the outside.

(e) Test holes.

1. (1) The contractor shall ensure that the well/hole is capped to prevent injury or pollution.
2. (2) If the test well is abandoned, then the well shall be plugged as outlined in 17 CAR § 11-509.