77 Ill. Adm. Code 905.APPENDIX A
A Illustrations and Exhibits
Section 905.APPENDIX AÂ Â Illustrations and Exhibits
Section ILLUSTRATION PÂ Â Recirculating Sand Filter Sizing
Chart
NUMBER OF BED-ROOMS
SEWAGE
FLOW PER DAY (Gal.)
SEPTIC
TANK SIZE
(Gal.)
No Garbage Grinder
RECIRCU-LATION
TANK SIZE (Gal.)
AREA
OF SAND FILTER (Sq. ft.)
RECOM-MENDED
SIZED OF SAND FILTER
NUMBER
OF UNDER-DRAINS
NUMBER
OF DISTRI-BUTION PIPES
1
200
750
500
100
10' x 10'
1
3
2
400
750
500
133
11' x 12'
1
3
3
600
1,000
500
200
14' x 14'
1
4
4
800
1,250
500
266
16' x 17'
1
5
5
1,000
1,500
500
333
18' x 19'
2
6
6
1,200
1,750
500
400
20' x 20'
2
6
7
1,400
2,000
500
466
20' x 23'
2
6
8
1,500
2,250
500
500
20' x 25'
2
6