77 Ill. Adm. Code 920.ILLUSTRATION F

F Creviced Formations: Earth Cover Over 30 Feet Thick – Mechanically Driven Casing

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Last amended: 2000Year: 2026Length: 15 wordsOfficial source

Section 920.ILLUSTRATION F Creviced Formations: Earth Cover Over 30 Feet Thick – Mechanically Driven Casing