U.S. Environmental Protection Agency publications:
Test Methods for Evaluating Solid Waste: Physical/Chemical Methods; EPA Publication SW-846, Third Edition (1986) as amended by Final Updates I, II, IIA, IIB, III, IIIA, IIIB, and IV, PB 99-115 891, revised March 2009 (http://www.epa.gov/osw/hazard/testmethods/sw846/online/index.htm)
Soil Screening Guidance: User's Guide, EPA/540/R-96/018, Publication 9355.4-23, July 1996
Risk Assessment Guidance for Superfund, Volume I, Human Health Evaluation Manual (Part A) Interim Final, EPA/540/1-89/002, Office of Emergency and Remedial Response, December 1989 (http://www.epa.gov/oswer/riskassessment/ragsa)
Regional Screening Level (RSL) Master Table, Region III, VI, and IX, December 2009
9 Va. Admin. Code § DOCUMENTS INCORPORATED BY REFERENCE (9VAC20-160)
Statutory Authority: § 10.1-1232 of the Code of Virginia.