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HRS Rule, Table 4-14, Pages 51615 - 51616

Dilution-Weighted Population Values for Potential Contamination Factor for Surface Water Migration Pathway
Type of Surface Water Bodyb Number of People
 0  1
to
10
11
to
30
31
to
100
101
to
300
301
to
1,000
1,001
to
3,000
3,001
to
10,000
10,0001
to
30,000
Minimal stream
(< 10 cfs)
0 4 17 53 164 522 1,633 5,214 16,325
Small to moderate stream
(10 to 100 cfs)
0 0.4 2 5 16 52 163 521 1,633
Moderate to large stream
(> 100 to 1,000 cfs)
0 0.04 0.2 0.5 2 5 16 52 163
Large stream to river
(> 1,000 to 10,000 cfs)
0 0.004 0.02 0.05 0.2 0.5 2 5 16
Large river
(> 10,000 to 100,000 cfs)
0 0 0.002 0.005 0.02 0.05 0.2 0.5 2
Very large river
(> 100,000 cfs)
0 0 0 0.001 0.002 0.005 0.02 0.05 0.2
Shallow ocean zone or Great Lake
(depth < 20 feet)
0 0 0.002 0.005 0.02 0.05 0.2 0.5 2
Moderate ocean zone or Great Lake
(depth 20 to 200 feet)
0 0 0 0.001 0.002 0.005 0.02 0.05 0.2
Deep ocean zone or Great Lakes
(depth > 200 feet)
0 0 0 0 0.001 0.003 0.008 0.03 0.08
3­mile mixing zone in quiet flowing river
(>= 10 cfs)
0 2 9 26 82 261 817 2,607 8,163

 

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