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PA Bulletin, Doc. No. 14-1167

RULES AND REGULATIONS

Title 25—ENVIRONMENTAL PROTECTION

ENVIRONMENTAL QUALITY BOARD

[ 25 PA. CODE CH. 250 ]

Corrective Amendments to 25 Pa. Code Chapter 250, Appendix A, Table 7

[44 Pa.B. 3235]
[Saturday, May 31, 2014]

 The Department of Environmental Protection has discovered discrepancies between the agency text of 25 Pa. Code Chapter 250, Appendix A, Table 7, as deposited with the Legislative Reference Bureau, published at 27 Pa.B. 4181 (August 16, 1997), and the official text published in the Pennsylvania Code Reporter (Master Transmittal Sheet No. 327, February 2002). When amendments to 25 Pa. Code Chapter 250, Appendix A adopted at 31 Pa.B. 6395 (November 24, 2001) were codified, Table 7 was inadvertently omitted.

 Therefore, under 45 Pa.C.S. § 901: The Department of Environmental Protection has deposited with the Legislative Reference Bureau a corrective amendment to 25 Pa. Code Chapter 250, Appendix A, Table 7. The corrective amendment to 25 Pa. Code Chapter 250, Appendix A, Table 7 is effective as of February 2, 2002, the date the defective official text was announced in the Pennsylvania Bulletin.

 The correct version of 25 Pa. Code Chapter 250, Appendix A, Table 7 appears in Annex A.

Annex A

TITLE 25. ENVIRONMENTAL PROTECTION

PART I. DEPARTMENT OF ENVIRONMENTAL PROTECTION

Subpart D. ENVIRONMENTAL HEALTH AND SAFETY

ARTICLE VI. GENERAL HEALTH AND SAFETY

CHAPTER 250. ADMINISTRATION OF LAND RECYCLING PROGRAM

Subchapter C. STATEWIDE HEALTH STANDARDS

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
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 (δ) 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.

[Pa.B. Doc. No. 14-1167. Filed for public inspection May 30, 2014, 9:00 a.m.]


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