Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 570 - DESIGN AND MAINTENANCE CRITERIA REGARDING RUNOFF FIELD APPLICATION SYSTEMS
Subpart B - DESIGN CRITERIA
Appendix E - Tables to Determine Dimensions of Field Application Areas
Tables to Determine Dimensions of Field Application Areas
Table 1: How to Use Table 2
1. Enter at slope of field application area from Appendix D.
2. Read down column and find corresponding length of field application area.
3. Continue down column stopping at area closest to that previously calculated for your site.
4. Read left to find width of field application area.
|
Table 2: |
Runoff Field Application Areas (square feet) |
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|
Slope (%) Length (ft) |
0.5 300 |
0.7 375 |
1.0 425 |
1.5 525 |
2.0 600 |
3.0 750 |
4.0 800 |
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|
Width (ft) |
20 |
6,000 |
7,500 |
8,500 |
10,500 |
12,000 |
15,000 |
17,000 |
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|
25 |
7,500 |
9,375 |
10,625 |
13,125 |
15,000 |
18,750 |
21,250 |
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|
30 |
9,000 |
11,250 |
12,750 |
15,750 |
18,000 |
22,500 |
25,500 |
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|
35 |
10,500 |
13,125 |
14,875 |
18,375 |
21,000 |
26,250 |
29,750 |
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|
40 |
12,000 |
15,000 |
17,000 |
21,000 |
24,000 |
30,000 |
34,000 |
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|
45 |
13,500 |
16,875 |
19,125 |
23,625 |
27,000 |
33,750 |
38,250 |
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|
50 |
15,000 |
18,750 |
21,250 |
26,350 |
30,000 |
37,500 |
42,500 |
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|
55 |
16,500 |
20,625 |
23,375 |
28,875 |
33,000 |
41,250 |
46,750 |
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|
60 |
18,000 |
22,500 |
25,500 |
31,500 |
36,000 |
45,000 |
51,000 |
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|
65 |
19,500 |
24,375 |
27,625 |
34,125 |
39,000 |
48,750 |
55,250 |
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|
70 |
21,000 |
26,250 |
29,750 |
36,750 |
42,000 |
52,500 |
59,500 |
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|
75 |
22,500 |
28,125 |
31,875 |
39,375 |
45,000 |
56,250 |
63,750 |
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|
80 |
24,000 |
30,000 |
34,000 |
42,000 |
48,000 |
60,000 |
68,000 |
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|
85 |
25,500 |
31,875 |
36,125 |
44,625 |
51,000 |
63,750 |
72,250 |
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|
90 |
27,000 |
33,750 |
38,250 |
47,250 |
54,000 |
67,500 |
76,500 |
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|
95 |
28,500 |
35,625 |
40,375 |
49,875 |
57,000 |
71,250 |
80,750 |
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|
100 |
30,000 |
37,500 |
42,500 |
52,500 |
60,000 |
75,000 |
85,000 |
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