Figure: 16 TAC §12.364(c)(3)

Total amount of fill
material

 

Predominant type of
fill material

  

Minimum size of drain,
in feet

 

 

 

 

 

 

 

 

Width

Height

Less than 1,000,000

 

 

 

 

 

 

 

 

 

 

yd3

 

 

Sandstone

 

 

10

4

D0

 

 

Shale

 

 

16

8

More than 1,000,000

 

 

 

 

 

 

 

 

 

 

yd3

 

 

Sandstone

 

 

16

8

D0

 

 

Shale

 

 

16

16