Appendix A.

Table 7 DEFAULT VALUES FOR CALCULATING MEDIUM-SPECIFIC CONCENTRATIONS FOR LEAD
Input Values Used in UBK Model for Lead (for residential exposure scenario)
Geometric Standard Deviation (GSD)	1.42 (default)	Drinking water intake	Model default
Outdoor air lead concentration	0.2 µg/m3 (default)	Soil lead level	495 µg/g
Indoor air lead concentration (% of outdoor)	30	Indoor dust lead level	495 µg/g
Time spent outdoors	Model default	Soil/dust ingestion weighting factor (%)	45
Ventilation rate	Model default	Paint lead intake	Model default
Lung absorption	Model default	Maternal contribution method	Infant model
Dietary lead intake	Model default	Mother’s blood lead at birth	7.5 µg/dL blood (model default)
GI method/bioavailability	Non-linear	Target blood lead level	10 µg/dL blood
Lead concentration in drinking water	4.00 µg/L (default)

Input Values Used in SEGH Equation (for nonresidential exposure scenario)
Concentration of lead in soil (S)	987 µg/g
Target blood lead level in adults (T)	20 µg/dL blood

Table 7 DEFAULT VALUES FOR CALCULATING MEDIUM-SPECIFIC CONCENTRATIONS FOR LEAD—Continued
Input Values Used in SEGH Equation (for nonresidential exposure scenario)
Geometric standard deviation of blood lead distribution (G)	1.4
Baseline blood lead level in target population (B)	4 µg/dL blood
Number of standard deviations corresponding to degree of protection required for the target population (n)	1.645 (for 95% of population)
Slope of blood lead to soil lead relationship ([delta ])	7.5 µg/dL blood per µg/g soil

REFERENCE

WIXSON, B.G. (1991). The Society for Environmental Geochemistry and Health (SEGH) Task Force Approach to the Assessment of Lead in Soil. Trace Substances in Environmental Health. 11-20.

TABLE 8
CONSTITUENTS OF POTENTIAL ECOLOGICAL CONCERN

METALS	ORGANICS
Arsenic III	Dichlorobenzene,1,3-
Arsenic V	Dichlorobenzene,1,4-
Barium	Dieldrin
Beryllium	Diethyl phthalate
Cadmium	Di-n-butyl phthalate
Chromium III	Endosulfan (mixed isomers)
Chromium VI	Endosulfan, alpha
Cobalt	Endosulfan, beta
Copper	Endrin
Iron	Ethylbenzene
Lead	Fluoranthene
Manganese	Fluorene
Mercury, inorganic	Heptachlor
Mercury, methyl	Hexachloroethane
Molybdenum	Hexachlorocyclohexane (Lindane)
Nickel	Kepone *
Selenium	Malathion
Vanadium	Methoxychlor
Zinc	Mirex *
Cyanide	Naphthalene
	Pentachlorobenzene
ORGANICS	Pentachlorophenol
Acenaphthene	Polynuclear aromatic hydrocarbons
Aldrin *	Polychlorinated biphenyls (PCB)
Benzene	Phenanthrene
Benzo(a)pyrene	Pyrene
Biphenyl	Tetrachloroethane,1,1,2,2-
Bis(2-ethylhexyl)phthalate	Tetrachloroethylene
Bromophenyl phenyl ether,4-	Tetrachloromethane
Butylbenzyl phthalate	Toluene
Chlordane *	Toxaphene
Chlorobenzene	Tribromomethane
DDT (and metabolites)	Trichlorobenzene,1,2,4-
Diazinon	Trichloroethane,1,1,1-
Dibenzofuran	Trichloroethylene
Dichlorobenzene,1,1-	Xylenes
Dichlorobenzene,1,2-

Source

The provisions of this Appendix A amended November 23, 2001, effective November 24, 2001, 31 Pa.B. 6395; amended January 7, 2011, effective January 8, 2011, 41 Pa.B. 230; corrected February 11, 2011, effective January 8, 2011, 41 Pa.B. 840; corrected March 19, 2011, effective March 5, 2011, 41 Pa.B. 1458; corrected May 16, 2014, effective March 5, 2011, 44 Pa.B. 2975; corrected May 30, 2014, effective February 2, 2002, 44 Pa.B. 3235. Immediately preceding text appears at serial pages (355324) to (355326), (356289) to (356290), (355329) to (355330), (356291) to (356296), (355337) to (355342), (356297) to (356300), (355589) to (355590), (356301) to (356302), (355351) to (355352), (356303) to (356304), (355591) to (355594), (356305) to (356306), (355595) to (355600), (356307) to (356314), (355375) to (355382), (356315) to (356326), (355601) to (355606), (356327) to (356328), (355607) to (355608), (356329) to (356362), (355439) to (355444) and (356363) to (356364).