Page 284 - Fundamentals of Air Pollution

240 16. Air Pathways from Hazardous Waste Sites

the remediation process if concentrations are expected to be higher than
desirable.

REFERENCES

1. Federal Register, Part II, Environmental Protection Agency, 40 CFR Part 300, Hazard
Ranking System: Final Rule, Vol. 55, No. 241, December 14, 1990.
2. Procedures for Conducting Air Pathway Analysis for Superfund Applications, Vol. I,
Application of Air Pathway Analyses for Superfund Activities, EPA-450/1-89-001, July 1989.
3. U.S. EPA, User's Guide for the Industrial Source Complex (ISC2) Dispersion Models.
EPA-450/4-92-008a (Vol. I—User Instructions), EPA-450/4-92-008b (Vol. II—Description of
Model Algorithms), EPA-450/4-92-008c (Vol. Ill—Guide for Programmers). U.S. Environ-
mental Protection Agency, Research Triangle Park, NC, 1992.
4. Petersen, W. B., and Rumsey, E. D., "User's Guide for PAL 2.0—A Gaussian Plume
Algorithm for Point, Area, and Line Sources," EPA/600/8-87/009. U.S. Environmental
Protection Agency, Research Triangle Park, NC, 1987 (NTIS Accession No. PB87-168 787).

SUGGESTED READING

"Air/Superfund National Technical Guidance Study Series," Volume II: "Estimation of Base-
line Air Emission at Superfund Sites," EPA-450/l-89-002a, August 1990. Volume 01: "Esti-
mation of Air Emissions from Clean-up Activities at Superfund Sites," EPA-450/1-89-003,
January 1989. Volume IV: "Procedures for Conducting Air Pathway Analyses for Superfund
Applications," EPA-450/1-89-004, July 1989.
An Act to Amend the Clean Air Act, Public Law 101-549, U.S. Congress, November 15,1990.
Summerhays, B. E., Procedures for estimating emissions from the cleanup of Superfund sites,
/. Air Waste Management Assoc. 40(1), January 1990.
"Superfund Exposure Assessment Manual," U.S. Environmental Protection Agency, EPA/
540/1-88/001, OSWER Directive 9285.5-1, April 1988.

QUESTIONS

1. How would the release of a volatile gas from contaminated soil be affected by the soil
temperature?
2. The EPA Hazardous Ranking System computes a numerical score for hazardous waste. If
the score exceeds a predetermined value, the waste site is placed on the National Priority
List (NPL) for Superfund cleanup. Discuss the pros and cons of such a ranking system.
3. Describe a possible situation in which an air contaminant is controlled but the control
system used transfers the contaminant problem to another medium, such as water or soil.