037-4 Wyo. Code R. §§ 4-3 - Water Well Rehabilitation
(a) When a water
well is to be rehabilitated to increase efficiency, all equipment used shall be
clean and as sterile as possible to prevent well to well or well to aquifer
cross-contamination. All chemical or biological agents to be introduced into a
well shall meet ASTM, API, NSF and/or AWWA standards approved for the
application of well rehabilitation. Physical rehabilitation of the well
including jetting, scrubbing, bailing, etc. shall be performed in a manner that
does not compromise the integrity of the well casing materials, filter pack,
and grout materials. When acidizing or flocculating agents are pumped or
removed from a well, it may be necessary to obtain clearance from the Wyoming
Department of Environmental Quality - Water Quality Division (WDEQ-WQD) for the
surface discharge of these agents.
(b) If, in the repair of a well, the old
casing is withdrawn, the well shall be recased in conformance with these
rules.
(c) If a liner is installed
to prevent leakage of undesirable water into a well, the annular space between
the casing and liner shall be completely sealed by packers, casing swedging,
pressure grouting, or other methods which will prevent the movement of water
between the casing and liner.
Notes
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