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HRS Rule Table 4-25, Pages 51628 to 51629

Ground Water to Surface Water Migration Component Scoresheet
Factor categories and factors Maximum value Value assigned
 
Drinking Water Threat    
 
Likelihood of Release to Aquifer:    
1. Observed Release 550 ——
2. Potential to Release:    

2a. Containment

10 ——

2b. Net Precipitation

10 ——

2c. Depth to Aquifer

5 ——

2d. Travel Time

35 ——

2e. Potential to Release (lines 2a[2b+2c+2d])

500 ——
3. Likelihood of Release (higher of lines 1 and 2e) 550 ——
 
Waste Characteristics:    
4. Toxicity/Mobility/Persistence (a) ——
5. Hazardous Waste Quantity (a) ——
6. Waste Characteristics 100 ——
 
Targets:    
7. Nearest Intake 50 ——
8. Population    

8a. Level I Concentrations

(b) ——

8b. Level II Concentrations

(b) ——

8c. Potential Contamination

(b) ——

8d. Population (lines 8a + 8b + 8c)

  ——
9. Resources 5 ——
10. Targets (lines 7 + 8d + 9) (b) ——
 
Drinking Water Threat Score:    
11. Drinking Water Threat Score ([lines 3 x 6 x 10]/82,500, subject to a maximum of 100). 100 ——
 
Human Food Chain Threat    
 
Likelihood of Release:    
12. Likelihood of Release (same value as line 3) 550 ——
 
Waste Characteristics:    
13. Toxicity/Mobility/Persistence/Bioaccumulation (a) ——
14. Hazardous Waste Quantity (a) ——
15. Waste Characteristic 1,000 ——
 
Targets:    
16. Food Chain Individual 50 ——
17. Population:    

17a. Level I Concentrations

(b) ——

17b. Level II Concentrations

(b) ——

17c. Potential Human Food Chain Contamination

(b) ——

17d. Population (lines 17a + 17b + 17c)

(b) ——
18. Targets (Lines 16 + 17d) (b) ——
 
Human Food Chain Threat Score:    
19. Human Food Chain Threat Score ([lines 12 x 15 x 18]/82, 500, subject to a maximum of 100). 100 ——
 
Environmental Threat    
 
Likelihood of Release:    
20. Likelihood of Release (same value as line 3) 550 ——
 
Waste Characteristics:    
21. Ecosystem Toxicity/Mobility/Persistence/Bioaccumulation. (a) ——
22. Hazardous Waste Quantity (a) ——
23. Waste Characteristics 1,000 ——
 
Targets:    
24. Sensitive Environments:    

24a. Level I Concentrations

(b) ——

24b. Level II Concentrations

(b) ——

24c. Potential Contamination

(b) ——

24d. Sensitive Environments (lines 24a + 24b + 24c)

(b) ——
25. Targets (value from line 24d) (b) ——
 
Environmental Threat Score:    
26. Environmental Threat Score ([lines 20 x 23 x 25]/82, 500, subject to a maximum of 60). 60 ——
 
Ground Water to Surface Water Migration Component Score for a Watershed    
 
27. Watershed Scorec (lines 11 + 19 + 26, subject to a maximum of 100). 100 ——
28. Component Score (Sgs)c (highest score from Line 27 for all watersheds evaluated, subject to a maximum of 100). 100 ——

a Maximum value applies to waste characteristics category.

bMaximum value not applicable.

c Do not round to nearest integer.

 

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