Ill. Admin. Code tit. 77, pt. 905, app A, ILLUSTRATION I, exh. C
Current through Register Vol. 49, No. 2, January 10, 2025
STANDARDS FOR SEEPAGE FIELD CONSTRUCTION (GRAVELLESS)
Trench Length, maximum length from point of discharge into system | 100 feet |
Trench Bottom, minimum width | 18 inches |
Trench Bottom, maximum width | 24 inches |
Trench Bottom, minimum depth | 18 inches |
Trench Bottom, maximum depth | 36 inches |
Trench Bottom, slope | level |
Distribution Line, minimum inside diameter | 8 inches |
Distribution Line, maximum inside diameter | 10 inches |
Distribution Line, minimum earth cover | 6 inches |
Distribution Line, maximum earth cover | 24 inches |
Distribution Line, maximum slope | level |
Ill. Admin. Code tit. 77, pt. 905, app A, ILLUSTRATION I, exh. C