Jump to main content or area navigation.

Contact Us

Superfund


   

HRS rule, table 4-1, Page 51608

Surface Water Overland/Flood Migration
Factor categories and factors Maximum value Value assigned
 
Drinking Water Threat    
 
Likelihood of Release:    
1. Observed Release 550  
2. Potential to Release by Overland Flow:    
2a. Containment 10  
2b. Runoff 25  
2c. Distance to Surface Water 25  
2d. Potential to Release by Overland Flow (lines 2a[2b+2c]) 500  
3. Potential to Release by Flood:    
3a. Containment (Flood) 10  
3b. Flood Frequency 50  
3c. Potential to Release by Flood (lines 3ax3b) 500  
4. Potential to Release (lines 2d+3c, subject to
a maximum of 500)
500  
5. Likelihood of Release (higher of lines 1 and 4) 550  
 
Waste Characteristics:    
6. Toxicity/Persistence (a)  
7. Hazardous Waste Quantity (a)  
8. Waste Characteristics 100  
 
Targets:    
9. Nearest Intake 50  
10. Population    
10a. Level I Concentrations (b)  
10b. Level II Concentrations (b)  
10c. Potential Contamination (b)  
10d. Population (lines 10a+10b+10c) (b)  
11. Resources 5  
12. Targets (lines 9+10d+11) (b)  
 
Drinking Water Threat Score:    
13. Drinking Water Threat Score ([lines 5x8x12]/82,500,
subject to a maximum of 100)
100  
 
Human Food Chain Threat    
 
Likelihood of Release:    
14. Likelihood of Release (same value as line 5) 550  
 
Waste Characteristics:    
15. Toxicity/Persistence/Bioaccumulation (a)  
16. Hazardous Waste Quantity (a)  
17. Waste Characteristics 1,000  
Targets:    
18. Food Chain Individual 50  
19. Population    
19a. Level I Concentrations (b)  
19b. Level II Concentrations (b)  
19c. Potential Human Food Chain Contamination (b)  
19d. Population (lines 19a+19b+19c) (b)  
20. Targets (lines 18+19d) (b)  
Human Food Chain Threat Score:    
21. Human Food Chain Threat Score ([lines 14x17x20]/82,500, subject to a maximum of 100) 100  
Environmental Threat    
Likelihood of Release:    
22. Likelihood of Release (same value as line 5) 550  
Waste Characteristics:    
23. Ecosystem Toxicity/Persistence/Bioaccumulation (a)  
24. Hazardous Waste Quantity (a)  
25. Waste Characteristics 1,000  
Targets:    
26. Sensitive Environments    
26a. Level I Concentrations (b)  
26b. Level II Concentrations (b)  
26c. Potential Contamination (b)  
26d. Sensitive Environments (lines 26a+26b+26c) (b)  
27. Targets (value from line 26d) (b)  
Environmental Threat Score:    
28. Environmental Threat Score ([lines 22x25x27]/82,500, subject to a maximum of 60) 60  
Surface Water Overland/Flood Migration Component Score for a Watershed    
29. Watershed Scorec (lines 13+21+28, subject to a maximum of 100) 100  
Surface Water Overland/Flood Migration Component Score  
30. Component Score (Sof)c (highest score from line 29 for all watersheds evaluated, subject to a maximum of 100) 100  

a Maximum value applies to waste characteristics category.

b Maximum value not applicable.

c Do not round to nearest integer.

Surface Water Overland/Flood Migration
Factor categories and factors Maximum value Value assigned
 
Drinking Water Threat    
 
Likelihood of Release:    
1. Observed Release 550  
2. Potential to Release by Overland Flow:    
2a. Containment 10  
2b. Runoff 25  
2c. Distance to Surface Water 25  
2d. Potential to Release by Overland Flow (lines 2a[2b+2c]) 500  
3. Potential to Release by Flood:    
3a. Containment (Flood) 10  
3b. Flood Frequency 50  
3c. Potential to Release by Flood (lines 3ax3b) 500  
4. Potential to Release (lines 2d+3c, subject to
a maximum of 500)
500  
5. Likelihood of Release (higher of lines 1 and 4) 550  
 
Waste Characteristics:    
6. Toxicity/Persistence (a)  
7. Hazardous Waste Quantity (a)  
8. Waste Characteristics 100  
 
Targets:    
9. Nearest Intake 50  
10. Population    
10a. Level I Concentrations (b)  
10b. Level II Concentrations (b)  
10c. Potential Contamination (b)  
10d. Population (lines 10a+10b+10c) (b)  
11. Resources 5  
12. Targets (lines 9+10d+11) (b)  
 
Drinking Water Threat Score:    
13. Drinking Water Threat Score ([lines 5x8x12]/82,500,
subject to a maximum of 100)
100  
 
Human Food Chain Threat    
 
Likelihood of Release:    
14. Likelihood of Release (same value as line 5) 550  
 
Waste Characteristics:    
15. Toxicity/Persistence/Bioaccumulation (a)  
16. Hazardous Waste Quantity (a)  
17. Waste Characteristics 1,000  
Targets:    
18. Food Chain Individual 50  
19. Population    
19a. Level I Concentrations (b)  
19b. Level II Concentrations (b)  
19c. Potential Human Food Chain Contamination (b)  
19d. Population (lines 19a+19b+19c) (b)  
20. Targets (lines 18+19d) (b)  
Human Food Chain Threat Score:    
21. Human Food Chain Threat Score ([lines 14x17x20]/82,500, subject to a maximum of 100) 100  
Environmental Threat    
Likelihood of Release:    
22. Likelihood of Release (same value as line 5) 550  
Waste Characteristics:    
23. Ecosystem Toxicity/Persistence/Bioaccumulation (a)  
24. Hazardous Waste Quantity (a)  
25. Waste Characteristics 1,000  
Targets:    
26. Sensitive Environments    
26a. Level I Concentrations (b)  
26b. Level II Concentrations (b)  
26c. Potential Contamination (b)  
26d. Sensitive Environments (lines 26a+26b+26c) (b)  
27. Targets (value from line 26d) (b)  
Environmental Threat Score:    
28. Environmental Threat Score ([lines 22x25x27]/82,500, subject to a maximum of 60) 60  
Surface Water Overland/Flood Migration Component Score for a Watershed    
29. Watershed Scorec (lines 13+21+28, subject to a maximum of 100) 100  
Surface Water Overland/Flood Migration Component Score  
30. Component Score (Sof)c (highest score from line 29 for all watersheds evaluated, subject to a maximum of 100) 100  

a Maximum value applies to waste characteristics category.

b Maximum value not applicable.

c Do not round to nearest integer.

 

Superfund Help: Acronyms | Topics | Frequent Questions | Publications | Sitemap

OSWER Home | Superfund Home | Innovative Technologies Home