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PA Bulletin, Doc. No. 11-447

RULES AND REGULATIONS

Title 25—ENVIRONMENTAL PROTECTION

ENVIRONMENTAL QUALITY BOARD

[ 25 PA. CODE CH. 250 ]

Corrective Amendments to 25 Pa. Code §§ 250.306, 250.307 and 250.605 and Appendix A, Tables 3b, 4a, 5a and 5b

[41 Pa.B. 1458]
[Saturday, March 19, 2011]

 The Department of Environmental Protection has discovered discrepancies between the agency text of 25 Pa. Code §§ 250.306, 250.307 and 250.605 and Appendix A, Tables 3b, 4a, 5a and 5b, as deposited with the Legislative Reference Bureau, and published at 41 Pa.B. 230 (January 8, 2011) and the official text published in the Pennsylvania Code Reporter (Master Transmittal Sheet No. 436, March 2011). Amendments to 25 Pa. Code §§ 250.306, 250.307 and 250.605 and Appendix A, Tables 3b, 4a, 5a and 5b published at 41 Pa.B. 230 were incorrectly codified.

 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 §§ 250.306, 250.307 and 250.605 and Appendix A, Tables 3b, 4a, 5a and 5b. The corrective amendment to 25 Pa. Code §§ 250.306, 250.307 and 250.605 and Appendix A, Tables 3b, 4a, 5a and 5b is effective as of March 5, 2011, the date the defective official text was announced in the Pennsylvania Bulletin.

 The correct versions of 25 Pa. Code §§ 250.306, 250.307 and 250.605 and Appendix A, Tables 3b, 4a, 5a and 5b appear in Annex A, with ellipses referring to the existing text.

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

§ 250.306. Ingestion numeric values.

*  *  *  *  *

 (b) For a regulated substance which is a carcinogen, the ingestion numeric value for that substance was calculated using the appropriate residential or nonresidential exposure assumptions from subsection (d) according to the following equations:

*  *  *  *  *

 (3) For vinyl chloride:

   MSC =                      TR                     
[CSFo × Abs × EF × IFadj × CF / (ATc × 365 days/year)] + (CSFo × Abs × IRc × CF/BWc)

*  *  *  *  *

§ 250.307. Inhalation numeric values.

*  *  *  *  *

 (b) For a regulated substance which is a carcinogen, the following apply:

*  *  *  *  *

 (4) For vinyl chloride, the numeric value for inhalation from soil was calculated using the appropriate residential or nonresidential exposure assumptions from subsection (d) according to the following equation using the TF for volatiles:

   MSC =                      TR                     
[IUR × ET × EF × ED × CF / (ATc × 365 days/yr × 24 hr/d × TF)] + (IUR × CF × TF)

*  *  *  *  *

 (d) The default exposure assumptions used to calculate the inhalation numeric values for soil are as follows:

Residential
Nonresidential
TermSystemic1
Carcinogens2
(Onsite Worker)
THQ Target Hazard Quotient 1 N/A 1
RfCi Inhal. Reference Concentration (mg/m3) Chemical-specific N/A Chemical-specific
ATnc Averaging Time for systemic toxicants (yr) 30 N/A 25
TF Transport Factor (mg/kg)/(mg/m3)
Volatilization3 Chemical-specific Chemical-specific Chemical-specific
Particulate4 1 × 1010 1 × 1010 1 × 1010
ET Exposure Time (hr/day) 24 24 8
EF Exposure Frequency5 (d/yr) 250 250 180
ED Exposure Duration (yr) 30 N/A 25
CF Conversion Factor 1,000 µg/mg 1,000 µg/mg 1,000 µg/mg
TR Target Risk N/A 1 × 10-5 1 × 10-5
IUR Inhalation Unit Risk (µg/m3)-1 N/A Chemical-specific Chemical-specific
ATc Averaging Time for carcinogens (yr) N/A 70 70
AED Combined Age-Dependent Adjustment Factor and Exposure Duration (yr)6 N/A 76 N/A

*  *  *  *  *

 (g) For a regulated substance which is a carcinogen and is a volatile compound, the numeric value for the inhalation of volatiles from groundwater was calculated by using the appropriate residential or nonresidential exposure assumptions from subsection (h) according to the following equations:

*  *  *  *  *

 (3) For vinyl chloride:

   MSC =                       TR                     
[(IUR × ET × EF × ED × TF × CF) / (ATc × 365 days/year × 24 hr/day)] + (IUR × TF × CF)

 (h) The default exposure assumptions used to calculate the inhalation numeric values for the inhalation of volatiles from groundwater are as follows:

Residential
Nonresidential
TermSystemic1
Carcinogens2
(Onsite Worker)
THQ Target Hazard Quotient 1 N/A 1
RfCi Inhal. Reference Concentration (mg/m3) Chemical-specific N/A Chemical-specific
ATnc Averaging Time for systemic toxicants (yr) 30 N/A 25
ET Exposure Time (hr/day) 24 24 8
EF Exposure Frequency (d/yr) 350 350 250
ED Exposure Duration (yr) 30 30 25
TF Transfer Factor (L/m3)3 0.5 0.5 0.5
CF Conversion Factor N/A 1,000 µg/mg 1,000 µg/mg
TR Target Risk N/A 1 × 10-5 1 × 10-5
IUR Inhalation Unit Risk (ug/m3)-1 N/A Chemical-specific Chemical-specific
ATc Averaging Time for carcinogens (yr) N/A 70 70
AED Combined Age-Dependent adjustment Factor and Exposure Duration (yr)4 N/A 76 N/A

Notes: Modified from USEPA Region III Risk-based Concentration Table, dated October 20, 1995.

N/A = Not Applicable

1 Residential exposure to systemic toxicants is based on adult exposure, consistent with USEPA (1991).

2 Residential exposure to carcinogens is based on combined child and adult exposure.

3 Default Transfer Factor is as presented in USEPA's RAGS, Part B.

4 The Combined Age-Dependent Adjustment Factor and Exposure Duration (AED) is calculated using the equation AED = ADAF<2 × ED<2 + ADAF2-16 × ED2-16 + ADAF>16 × ED>16, where ADAF<2 = 10, ED<2 = 2 yr, ADAF2-16 = 3, ED2-16 = 14 yr, ADAF>16 = 1, ED>16 = 14 yr.

*  *  *  *  *

§ 250.605. Sources of toxicity information.

 (a) For site-specific standards, the person shall use appropriate reference doses, reference concentrations, cancer slope factors and unit risk factors identified in Subchapter C (relating to Statewide health standards), unless the person can demonstrate that published data, available from one of the following sources, provides more current reference doses, reference concentrations, cancer slope factors or unit risk factors:

 (1) Integrated Risk Information System (IRIS).

 (2) United States Environmental Protection Agency, National Center for Environmental Assessment (NCEA) Provisional Peer-Reviewed Toxicity Values (PPRTV).

*  *  *  *  *

APPENDIX A

TABLE 3—MEDIUM-SPECIFIC CONCENTRATIONS (MSCs) FOR ORGANIC REGULATED SUBSTANCES IN SOIL

B. Soil to Groundwater Numeric Values1

Used Aquifers
TDS ≤ 2500TDS > 2500Non-Use Aquifers
REGULATED SUBSTANCE  
CASRN 		 
Residential 		 
Non-Residential 		 
Residential 		 
Non-Residential 		 
Residential 		 
Non-Residential		Soil Buffer Distance
100 X
GW MSC
Generic
Value 		100 X
GW MSC 		Generic
Value 		100 X
GW MSC 		Generic
Value 		100 X
GW MSC 		Generic
Value 		100 X
GW MSC 		Generic
Value 		100 X
GW MSC 		Generic
Value 		(feet)
*  *  *  *  *
CRESOL, 4,6-DINITRO-O- 534-52-1 0.37 0.28 E 1 0.75 E 37 28 E 100 75 E 370 280 E 1,000 750 E NA
*  *  *  *  *

DIBENZOFURAN 132-64-9 3.7 95 E 10 260 E 370 9,500 E 450 12,000 E 450 12,000 E 450 12,000 E 15
*  *  *  *  *

DICHLORVOS 62-73-7 0.23 0.054 E 0.9 0.21 E 23 5.4 E 90 21 E 0.23 0.054 E 0.9 0.21 E NA
*  *  *  *  *

Table 4—MEDIUM-SPECIFIC CONCENTRATIONS (MSCS) FOR INORGANIC REGULATED SUBSTANCES IN SOIL

A. Direct Contact Numeric Values

 
Residential
Nonresidential MSCs
RELATED SUBSTANCECASRNMSCSurface
Soil
Subsurface
Soil
0-15 feet 0-2 feet 2-15 feet
*  *  *  *  *

FLUORIDE 16984-48-8 8,800 G 110,000 G 190,000 G
*  *  *  *

TABLE 5—PHYSICAL AND TOXICOLOGICAL PROPERTIES

A. Organic Regulated Substances

Regulated Substance CAS RfDo
(mg/kg-d) 		CSFo
(mg/kg-d)-1 		RfCi
(mg/m3) 		IUR
(µg/m3)-1 		Koc
(L/KG) 		VOC?
Aqueous
Sol
(mg/L) 		Aqueous
Sol
Reference1 		TF
Vol from Surface Soil
TF
Vol from SubSurface Soil
Organic
Liquid 		Boiling
Point
(degrees C)
Degradation
Coefficient
(K)(yr-1)
ACENAPHTHENE 83-32-9 0.06 I 4,9003.8 1,5,6 279 1.24
ACENAPHTHYLENE 208-96-8 0.06 S 4,50016.1 5,6,7 280 2.11
ACEPHATE 30560-19-1 0.004 I 0.0087 I 3818,000 6 340
ACETALDEHYDE 75-07-0 0.009 I 0.0000022 I 4.1 X 1,000,000 1 13,100 15,100 X 20
ACETONE 67-64-1 0.9 I 31 D 0.31 X 1,000,000 1 13,100 15,000 X 56 18.07
ACETONITRILE 75-05-8 0.06 I 0.5 X 1,000,000 1 13,100 15,000 X 82 4.50
ACETOPHENONE 98-86-2 0.1 I 170 5,500 1 X 203
ACETYLAMINOFLUORENE, 2- (2AAF) 53-96-3 3.8 C 0.0013 C 1,600 10.13 7 303 0.69
ACROLEIN 107-02-8 0.0005 I 0.00002 I 0.56 X 208,000 1,2,4 13,100 15,100 X 53 4.50
*  *  *  *  *

ALDICARB SULFONE 1646-88-4 0.001 I 10 8,000 5 317
*  *  *  *  *

BROMACIL 314-40-9 0.1 M 58 815 2 421
*  *  *  *  *

CHLORO-1,1-
DIFLUORO
ETHANE, 1- 		75-68-3 50 I 22 X 1,400 4 13,100 15,000 X -9
*  *  *  *  *

CHLOROBENZILATE 510-15-6 0.02 I 0.11 C 0.000031 C 2,600 13 4 415 3.60
*  *  *  *  *

CHLOROPRENE 126-99-8 0.02 H 0.007 H 50 X 1,736 9 13,100 15,000 X 59 0.69
*  *  *  *  *
CRESOL, o- (METHYLPHENOL, 2-) 95-48-7 0.05 I 22 X 2,500 3,5,6 13,000 14,900 191 18.07
*  *  *  *
DIOXANE, 1,4- 123-91-1 0.1 D 0.011 I 3.6 D 0.0000077 C 7.8 X 1,000,000 5 13,000 14,900 X 101 0.69
*  *  *  *  *

MALATHION 121-75-5 0.02 I 1,300 143 4 X 351 2.46
MALEIC HYDRAZIDE 123-33-1 0.5 I 2.8 6,000 4 260
MANEB 12427-38-2 0.005 I 1 23 9,13 351
*  *  *  *  *

MONOCHLOROACETIC ACID 79-11-8 0.01 M 0.24 X 858,000 17 13,000 14,900 189
*  *  *  *  *
PCB-1016 (AROCLOR) 12674-11-2 0.00007 I 0.07 I 0.00002 I 110,000 0.25 5 X 325
PCB-1221 (AROCLOR) 11104-28-2 2 I 0.00057 I 1,900 0.59 5 X 275
*  *  *  *  *

PENTACHLOROETHANE 76-01-7 0.09 P 1,905 X 480 1,3 13,100 15,100 X 160
*  *  *  *  *

TRICHLOROETHYLENE (TCE) 79-01-6 0.006 N 0.011 N 0.5 D 0.0000017 N 93 X 1,100 1 13,100 15,000 X 87 0.02
*  *  *  *  *

Table 5—PHYSICAL AND TOXICOLOGICAL PROPERTIES

B. Inorganic Regulated Substances

Regulated Substance
CAS RfDo
(mg/kg-d) 		CSFo
(mg/kg-d)-1 		RfCi
(mg/m3)-1 		IUR
(µg/m3)-1 		Kd
*  *  *  *  *

BARIUM AND COMPOUNDS 7440-39-3 0.2 I 0.0005 H 41
*  *  *  *  *

CHROMIUM VI 18540-29-9 0.003 I 0.000008 I 0.084 I 19
*  *  *  *  *
[Pa.B. Doc. No. 11-447. Filed for public inspection March 18, 2011, 9:00 a.m.]


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