| 摘要 |
An environmentally safe monitoring well cap has a base and a hingely rotatable cap attached to the base. The base includes a coupling section which fits around the monitoring well casing and the coupling sections includes a ledge having an O-ring position thereagainst for contacting the top of the casing to provide a fluid seal. In addition, a flange extends outward from the bottom of the base section and is encased in grout to prevent the removal of the cover. The cap rotates about hinges from base to cover the top of the base. A ridge and O-ring are provide for the cap to seat against the base to provide a fluid tight seal. In addition, a rotating locking member is provided to permit the cap to be locked in place and to be held under tension against the upper O-rings.
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