Compilation of Rules and Regulations of the State of Georgia
Department 391 - RULES OF GEORGIA DEPARTMENT OF NATURAL RESOURCES
Chapter 391-3 - ENVIRONMENTAL PROTECTION
Subject 391-3-19 - HAZARDOUS SITE RESPONSE
Appendix (391-3-19) II - REPORTABLE QUANTITIES SCREENING METHOD
This Appendix describes the method that will be used by the Director to determine if a release exceeds a reportable quantity. If the Reportable Quantities Screening Method (RQSM) indicates that a release exceeds a reportable quantity, the property owner will be required to report the release in accordance with Rule 391-3-19-.05 and the site will be listed on the Hazardous Site Inventory.
Sites that exceed a threshold score for either or both of the two pathways are considered to have had a release that exceeds a reportable quantity. The threshold score for the "groundwater" pathway is 10.0 and the threshold score for the "on-site-exposure" pathway is 20.0.
GEORGIA ENVIRONMENTAL PROTECTION DIVISION
REPORTABLE QUANTITIES SCREENING METHOD
FOR
________________________________________________
(Name of Site)
________________________________________________
(City) (State)
SCORED BY: ________________________________ ON: ____________________
Threshold
GROUNDWATER PATHWAY SCORE () 10
ON-SITE PATHWAY SCORE () 20
GROUNDWATER
A. Has a release to groundwater occurred? Known Suspected Potential Future
(45) (10) (5)
If A=45, then go to D
B. Route Characteristics
1b. Susceptibility Rating: Higher Average Lower
(6) (3) (0)
2b. Physical State: Stable Unstable Powder, Liquid, Gas,
Solid Solid Ash Sludge
(0) (1) (2) (3)
C. Containment: Very Good Good Fair Poor
(0) (1) (2) (3)
D. Release Characteristics
1d. Regulated Substance:
2d. Toxicity: None (0) Low (1) (2) (4) (8) (16) High
3d. Quantity: Threshold (1) (2) (3) (4) (5) (6) (7) (8) Very Large
E. Targets
1e. Exposure to groundwater release:
Known release MCL, and known human exposure MCL.........................(25)
Known release MCL, and suspected human exposure..............................(20)
Known release, no MCL exists, and known human exposure........................(18)
Known release, MCL, and known human exposure MCL.........................(15)
Known release, no MCL exists, and suspected human exposure...................(12)
Suspected release and human exposure suspected......................................(8)
Known release MCL, but no human exposure suspected.............................(4)
Known release, no MCL exists, and no human exposure suspected.................(3)
Suspected release but no human exposure suspected.................................(2)
Potential future release...........................................................................(1)
Known release less than MCL..................................................................(0)
(only one choice allowed)
2e. Distance to well or spring (miles): 1/2 1/2 to 1 1 to 2 2 to 3 3
(16) (9) (4) (1) (0)
THE GROUNDWATER PATHWAY SCORE (Sgw) IS CALCULATED AS FOLLOWS:
Sgw = M x (2d + 3d) x (1e + 2e) / 442.8
Where: M = A + ((1b + 2b) x C)
If A = 45 then M = 45
If 2d is unknown, then 2d=4
If 3d is unknown, then 3d=4
If 1e includes known or suspected human exposure, 2e = 16
If 1e = 0 then 2e = 1
Note: The denominator of 442.8 normalizes the groundwater score to a value between 0 and 100.
ON-SITE EXPOSURE
A. Access to site: Inaccessible Limited Access Unlimited Access
(0) (2) (4)
B. Has there been a release: Yes Suspected No
(25) (15) (0)
C. Containment
Very Good Poor
Soil Releases: (0) (1) (2) (3) (4) (5)
or
Aboveground releases: (0) (1) (2) (3)
D. Release Characteristics
1d. Regulated Substance: _________________________________________
2d. Toxicity: None (0) Low (1) (2) (4) (8) (16) High
3d. Quantity: Threshold (1) (2) (3) (4) (5) (6) (7) (8) Very Large
E. Targets
1e. Distance (feet) to 300 301 to 1000 1001 to 3000 3001 to 5280 1 mile nearest resident (8) (6) (4) (2) (1)
individual
2e. Is there an on-site sensitive environment? Yes No
(1) (0)
THE ON-SITE PATHWAY SCORE (S0) IS CALCULATED AS FOLLOWS:
S0 = A x (B + C) x (2d + 3d) X(1e + 2e)/259.2
If A or B = 0, the S0 = 0
If 2d is unknown, then 2d = 4
If 3d is unknown, then 3d = 4
Note: The denominator of 259.2 normalizes the score to a value between 0 and 100.
