Pennsylvania Code
Title 25 - ENVIRONMENTAL PROTECTION
Part I - Department of Environmental Protection
Subpart D - Environmental Health and Safety
Article IX - Residual Waste Management
Chapter 290 - BENEFICIAL USE OF COAL ASH
Subchapter D - WATER QUALITY MONITORING
Section 290.303 - Standards for wells and casing of wells
Universal Citation: 25 PA Code ยง 290.303
Current through Register Vol. 54, No. 44, November 2, 2024
(a) A monitoring well shall be cased as follows:
(1) The casing must maintain the
integrity of the monitoring well borehole and be constructed of material that
will not react with the groundwater being monitored.
(2) The minimum casing diameter must be 4
inches unless otherwise approved by the Department in writing.
(3) The well must be constructed with a
screen that meets the following requirements:
(i) The screen must be
factory-made.
(ii) The screen may
not react with the groundwater being monitored.
(iii) The screen must maximize open area to
minimize entrance velocities and allow rapid sample recovery.
(4) The well must be filter-packed
with chemically inert clean quartz sand, silica or glass beads, unless
otherwise approved by the Department. The material must be well-rounded and
dimensionally stable.
(5) The
casing must extend at least 1 foot aboveground, unless the Department has
approved flush mount wells.
(6) The
annular space above the sampling depth must be sealed to prevent contamination
of samples and the groundwater.
(7)
The casing must be designed and constructed to prevent cross contamination
between surface water and groundwater.
(8) Alternative casing designs for wells in
stable formations may be approved by the Department.
(b) Monitoring well casings must be enclosed in a protective casing that must:
(1) Be of
sufficient strength to protect the well from damage by heavy equipment and
vandalism.
(2) Be installed for at
least the upper 10 feet of the monitoring well, as measured from the well cap,
with a maximum stick up of 3 feet, unless otherwise approved by the Department
in writing.
(3) Be grouted and
placed with a concrete collar at least 3 feet deep to hold it firmly in
position.
(4) Be numbered for
identification with a label capable of withstanding field conditions.
(5) Protrude above the monitoring well
casing.
(6) Have a locked
cap.
(7) Be made of steel or other
material of equivalent strength.
This section cited in 25 Pa. Code § 290.304 (relating to assessment plan); and 25 Pa. Code § 290.307 (relating to interim water quality monitoring requirements).
Disclaimer: These regulations may not be the most recent version. Pennsylvania may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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