Land Recycling Program Technical Guidance Manual- Section IV.A.4

SDMSDocID 2081088 DEPARTMENT OF ENVIRONMENTAL PROTECTION Bureau of Land Recycling and Waste Management

DOCUMENT NUMBER: 253-0300-100 TITLE: Land Recycling Program Technical Guidance Manual- Section IV.A.4. Vapor Intrusion into Buildings from Groundwater and Soil under the Act 2 Statewide Health Standard. EFFECTIVE DATE: January 24, 2004 AUTHORITY: The Land Recycling and Environmental Remediation Standards Act (Act 2 of 1995) (35 P.S. §§6026.101 et seq.) and the regulations issued pursuant to that legislation at 25 PA Code Chapter 250. POLICY: It is the policy of the Department to implement Act 2 in accordance with the regulations contained in Chapter 250 of the PA Code and as described in this guidance manual. PURPOSE: The Department has developed a technical guidance manual to assist remediators in satisfying the requirements of Act 2 and the regulations published in Chapter 250 of the PA Code. This specific guidance, which is to be incorporated into the technical manual, is to provide additional screening requirements in some cases, to prevent unacceptable risk being present as result of vapor intrusion of contaminants from soil and/or groundwater into indoor structures. APPLICABILITY: The guidance is applicable to any person or persons conducting a site remediation under Act 2 under the Statewide Health Standard. DISCLAIMER: The policies and procedures outlined in this guidance document are intended to supplement existing requirements. Nothing in the policies or procedures will affect regulatory requirements. The policies and procedures herein are not an adjudication or a regulation. There is no intent on the part of the Department to give these rules that weight or deference. This document establishes the framework, within which DEP will exercise its administrative discretion in the future. DEP reserves the discretion to deviate from this policy statement if circumstances warrant. PAGE LENGTH: 57 pages LOCATION: Volume 5 Tab 32 DEFINITIONS: See 25 Pa. Code Chapter 250

253-0300-1007 FINAL/Page 1 AR307588 Introduction

When releases occur near buildings, volatilization of organic contaminants in the subsurface can result in the intrusion of vapor-phase contaminants into indoor air.

Indoor air quality (IAQ) from the vapor intrusion of contaminants into buildings from groundwater and soil is not assessed under the Statewide health standard in the Act 2, Chapter 250 regulations. This section provides guidance for assessing potential subsurface vapor intrusion of volatile organic and semivolatile contaminants into buildings from contaminated groundwater and soils under the Statewide health standard. This section provides guidance for assessing vapor intrusion under the Statewide health standard. Remediators who choose to forgo the sampling activities outlined in this guidance document may proceed directly to a site-specific analysis (which may also ultimately require some limited IAQ sampling) or alternatively may proceed directly to mitigation. If volatile inorganic constituents are of concern (i.e., mercury, ammonia, cyanide) the remediator may address them under the site-specific standard. Decision matrices for consideration of indoor air quality were developed for groundwater and soil under a Statewide health or generic approach. The matrices apply under the specific conceptual model conditions used in their development. Hence, users are cautioned to make sure that the conditions at the site are applicable. In the decision matrices for soil and groundwater, several options are provided for determining if IAQ is a concern. Any one or more of these options may be undertaken in order to assess IAQ issues. These include: • Comparison of media concentration to previously available soil and groundwater medium specific concentrations (MSCs). This option allows a remediator to determine when a constituent is not of potential concern for indoor air if certain available MSCs are met (see Tables 1-2, Groundwater; Tables 4-5, Soil). Specifically, with the exception of some volatile compounds, none of the regulated substances for which a nonuse aquifer standard is listed in Chapter 250 would be a concern in groundwater if the MSCs for nonuse aquifers are met. The same is true for soil meeting a used aquifer standard, with some regulated substances being a concern at levels below the used aquifer standards published in Chapter 250. Although the currently available MSCs have their specific points of compliance (e.g., groundwater at the property boundary), use of the MSC for the vapor intrusion pathway must meet the applicable conditions for the pathway (e.g., within 100' of an occupied building). * Comparison of media concentration to conservative default screening values for groundwater and soil (see Tables 1-2 and Tables 4-5) calculated using Pennsylvania-specific parameters and the Johnson and Ettinger (J&E) Vapor Intrusion model (USEPA, 2001). These values are used to identify chemicals of potential indoor air concern (COPIACs) when this calculated screening level is lower than an MSC. However, the values can also be used to screen the

253-0300-1007 FINAL /Page 2 AR307589 concentration of COPIACs in a given medium to determine if additional evaluation or mitigation is warranted. For example, the residential screening value for chloroform in groundwater is 410 ug/L (see Table 1). Based on this value, groundwater concentrations that meet the used aquifer MSC would not be of concern for the indoor air pathway. However, concentrations above 410 fig/L (including groundwater that meets the nonuse aquifer MSC) would require further evaluation. Note this option is available even if the constituent is identified as a COPIAC. • Comparison of media concentration to soil gas values derived using the MSC for indoor air quality (MSCiAoJ and a transfer factor to account for attenuation between the outside and inside of buildings. This allows a remediator to measure vapor concentrations outside the buildings and extrapolate to estimated levels inside the building. See Table 3. * Comparison of media concentration to MSC developed for IAQ (MSCiAoJ using measured indoor air concentrations. See Table 3. If indoor air quality is determined to be a concern based on the use of these matrices, one may address (mitigate) the contamination or perform a site-specific evaluation.

General Considerations

There are two conditions that must be met for the vapor intrusion pathway to be of potential concern. First, inhabited buildings must be close to a volatile/ semivolatile source and, second, the source concentration must be above some threshold or screening concentration. Through a series of modeling exercises and professional judgment these conditions were incorporated into the guidance. Table 9 provides values for chemical, physical and toxicological properties that were used in modeling to derive screening values. The distance at which concentrations are negligible is a function of the mobility, toxicity and persistence of the chemical, as well as the geometry of the source, subsurface materials, and characteristics of the building of concern. A horizontal distance of 100 feet from the source to receptor (inhabited building) was chosen as the criterion to define when sites were close enough and so needed to be addressed for vapor intrusion. Vertical separation distances, based on the modeling exercises, are discussed in later sections of the Guidance. Screening values were also defined on the basis of the modeling exercise and are discussed in appropriate sections.

In addition, under the Statewide health standard, if separate phase liquid (SPL - see definitions) is encountered beneath the structure or within 100 feet of the receptor, then the model-derived values should not be used. The model used does not account for SPL. Instead, sampling of soil gas (recommended) or indoor air is required to meet the Statewide health standard. Alternatively, use of the J&E model with the nonaqueous phase liquid (NAPL) component on a site-specific modeling basis may be considered.

The presence of preferential exposure pathways (see definitions) within 30 feet of the source also limits the further use of the matrix, i.e., the model used to develop default

253-0300-1007 FINAL /Page 3 AR307590 screening levels cannot account for preferential pathways. It is not possible to predict contaminant concentrations nor to determine where the material will end up. Hence, sampling is required to meet the Statewide health standard if preferential pathways are present.

Evaluating the vapor intrusion pathway into buildings, on a generic basis, is extremely difficult. For example, even though reasonable Pennsylvania-specific assumptions (Table 8) were used, the J&E model as applied uses conservative processes (e.g., infinite source, no degradation). This tends to produce conservative screening values that may indicate a potential IAQ problem where there is not one. It was decided to err on the side of conservatism, since the option exists to further evaluate on a more site-specific basis if believed warranted. Another important concern is the prevalence of other sources of volatile organics (particularly indoors) that can complicate interpretation of sampling results. Several constituents, e.g., benzene and trichloroethylene, have calculated indoor air MSCs that are lower than background levels. A remediator should use caution when making decisions based on both indoor air and soil gas analyses and take these background levels into consideration. It must be noted that for reasons of background concentrations or other common household products effects, the values presented herein do not represent site-by-site health based considerations, and therefore cannot be compared to such site-specific analyses. EPA's database (USEPA, 1988, Shah and Singh, 1988) is a good source of information on measured indoor and outdoor air background levels. Also, the New York Department of Health is developing a compilation including the EPA database values and values measured in New York State. If a property does not currently have occupied buildings or structures containing enclosed spaces that could retain vapors and it is possible that future development will consist of occupied buildings or structures containing enclosed spaces (residential or nonresidential), the deed acknowledgment requirements shall apply pursuant to Act 1995-2, 303(g).

Application To the Site-Specific Standard

The development of the indoor air-specific concentrations (MSCiAo.) f°r volatile chemicals under the Statewide health standard has been entirely focused on the individual chemicals. No pre-planned effort was made to address the cumulative effects of the chemicals under the Statewide health standard, consistent with Act 2. The reason for this is that the process used to develop the indoor air MSC is so highly conservative. For example, the maximum acceptable risk level under Act 2 that is employed in the site-specific standard is 1CM. The MSCs intended for use in the Statewide health standard were derived using a potential cancer risk of 1O5. It is apparent here that there is a 10-fold additional factor of protectiveness in this aspect of the derivation alone. For the reasons of sufficient conservatism already incorporated, additional consideration of cumulative indoor air effects in the Statewide health standard is considered unwarranted, again consistent with Act 1995-2.

For the site-specific standard, it is appropriate to use a similar screening process as used to identify potential indoor air concerns at the Statewide health standard. This is

253-0300-1007 FINAL/Page 4 AR307591 consistent with the purpose of the screening, which is to eliminate chemicals from quantitative consideration if they are present at concentrations that clearly do not pose a potential for unacceptable risk. However, additional considerations are warranted for the indoor air pathway (as for all pathways) under the site-specific standard. The cumulative effects of chemicals, which are present at concentrations exceeding their respective indoor air MSCs, are considered in the site-specific standard by summing those potential risks for each receptor from all appropriate chemicals (separately for both cancer and non-cancer effects) and pathways. This methodology is consistent with standard USEPA approaches under the RCRA and CERCLA programs.

Process for Groundwater

In the Groundwater IAQ Decision Matrix for the Statewide health standard (Figure 1), the receptor location and type of soil are critical. The pathway is only relevant if inhabited buildings are proximate to the source. Further, under the Statewide health standard, if SPL is encountered beneath the structure or within 100 feet of the receptor at or above the water table, the matrix should not be used. Instead, sampling of soil gas (recommended) or indoor air is required for meeting the Statewide health standard, or a site-specific evaluation (including optional site-specific modeling) should be considered. In addition, the presence of preferential exposure pathways (see the Statewide health standard definitions) limits the further use of the matrix. Hence, additional sampling is required to meet the Statewide health standard if preferential exposure pathways are present and pass through the source or occur within 30 feet of the source. For situations where a subsurface vapor source is within 100 feet of an occupied building, several options are available to determine if a potential pathway exists. For each constituent, one may choose one or more options, as appropriate, to determine whether further evaluation or mitigation is needed. Failure to meet this generic evaluation indicates that a pathway may exist and further site-specific evaluation or mitigation is warranted. Options are: • For residential land uses, if the COPIAC (see the Statewide health standard definitions) levels of chlorodibromomethane, chloroethane, chloroform, ethylbenzene, naphthalene, 1,1,1,2-tetrachloroethane, 1,2,3-trichloropropane, and xylenes do not exceed the residential groundwater MSC (MSCgw) for used aquifers, and other regulated substances in groundwater do not exceed the residential MSCgw for a nonuse aquifer, no further site evaluation is required. Note: the receptor must be separated vertically from the source by at least five feet of soil-like material. If the material below the receptor is predominantly sand, the vertical separation may need to be greater than five feet and the derived values should not be used without further site-specific model evaluation. See Table 1 for groundwater residential values. • For nonresidential land uses, if the COPIAC levels of benzotrichloride, chlorodibromomethane, chloroethane, chloroform, ethylbenzene and 1,2,3- trichloropropane do not exceed the nonresidential MSCgw for used aquifers and other regulated substances do not exceed the nonresidential MSCgw for nonuse aquifers, no further site evaluation is required. Note: the receptor must be

253-0300-1007 FINAL /Page 5 AR307592 separated vertically from the source by at least five feet of soil-like material. If the material below the receptor is predominantly sand, the vertical separation may need to be greater than five feet and the derived values should not be used without further site-specific model evaluation. No regulated substances were identified as being of concern when Occupational Safety and Health (OSHA) endpoints (i.e., permissible exposure limits or PELs) were used with standard worker exposure assumptions, when the source and receptor are separated vertically by at least five feet of soil-like material except as noted for sand above. The OSHA-derived screen (PA defaults) may be used as an alternate to the default EPA-derived screen when OSHA regulations are fully implemented (e.g., notification, monitoring) and documented in a workplace building. In addition, the PELs prescribe concentrations that cannot be exceeded during a workday. See Table 2 for groundwater nonresidential values. • If the groundwater concentration is less than the J&E PA default screening level (Table 1 - residential, Table 2 - nonresidential) and the groundwater is greater than or equal to five feet from the receptor, then no further IAQ activity for groundwater is required. This option may be used regardless of whether the constituent is identified as a COPIAC or not. If the material below the building is predominately sand or "sand-like" material, the derived values should not be used and therefore soil gas (recommended) or indoor air sampling should be done. Note: When screening groundwater concentrations, the decision to proceed in the screen is based on a non-exceedance rule, NOT the use of the 75%/lOx rule. • If the measured soil gas concentration is less than or equal to the soil gas MSC (MSCsc. - see the Statewide health standard definitions), then no further IAQ activity for groundwater is required. The MSCsc is a function of the MSCiAQ, and a transfer (or attenuation) factor of 0.01 applies in going from outside to inside the building. • If the measured indoor air concentration is less than or equal to the MSCiAQ, then no further IAQ activity for groundwater is required. These values are found in Table 3. If none of the generic options are met, then risk management (mitigation) activities may be warranted, including another comparison to MSCiAQ of either soil gas or measured indoor levels after mitigation. However, one may proceed to a site-specific risk analysis (including using the J&E model with site-specific input) in lieu of additional efforts under the Statewide health standard. If MSCsc or MSCiAQ is not exceeded, then no further IAQ activity for groundwater is warranted.

Process for Soil

In the Soil IAQ Decision Matrix for the Statewide health standard (Figure 2), the receptor location and type of soil are critical. The pathway is only relevant if inhabited buildings are proximate to the source. Further, if SPL is encountered beneath or within 100 feet of an inhabited building or below grade occupied space at or above the water table, the

253-0300-1007 FINAL /Page 6 AR307593 matrix should not be used. Instead, sampling of soil gas (recommended) or indoor air is required for meeting a the Statewide health standard, or a site-specific evaluation (including optional site-specific modeling) should be considered. Also, if preferential exposure pathways are present and pass through the source or occur within 30 feet of the source, then the decision matrix requires that soil gas (recommended) or indoor air sampling be performed. For situations where a subsurface vapor source is within 100 feet of an occupied building, several options are available to determine if a potential pathway exists. For each constituent, one may choose one or more options, as appropriate, to determine whether further evaluation or mitigation is needed. Failure to meet this generic evaluation indicates that a pathway may exist and further site-specific evaluation or mitigation is warranted. Options are: • A remediator must sample and analyze for those constituents pertaining to the particular release at the site that are on Table 10, or on Tables 4 and 5. If the volatile organic constituent is not listed in the tables and it is found to be a concern at a particular site, then a site-specific analysis should be used. The chemicals on Table 10 were identified as COPIACs because their presence in soil at levels below the soil-to-groundwater numeric value (MSCsoa to gw) for used aquifers may lead to indoor air concerns. However, it should be noted that there is considerable uncertainty with evaluating soil concentrations on a generic basis and this guide has intentionally erred on the conservative side to include rather then exclude constituents as COPIACs. Soil gas concentrations are a useful alternative to bulk soil concentrations for evaluating the soil medium. If any of these COPIACs are present at the site, then further generic (e.g., comparison to default J&E values or soil gas measurement) or site-specific (including site-specific modeling) evaluation is needed. However, one may choose to mitigate at any time.

• If non-COPIAC volatile constituents do not exceed the MSC S0ii to gw (Tables 4 & 5) for a used aquifer, no further IAQ activity for soil is required. Note: the receptor must be separated vertically from the source by at least five feet of soil-like material. If the material below the receptor is predominantly sand or sand-like material, the vertical separation may need to be greater than five feet and the derived values should not be used without further site-specific model evaluation. o For a potentially complete exposure pathway, if the soil concentrations are less than the J&E PA default screening levels (Table 4 - residential, Table 5 - nonresidential) and the contamination is greater than or equal to five feet from the receptor, then no further IAQ activity for soil is required. This option may be used regardless of if the constituent is identified as a COPIAC or not. If the material below the building is predominately sand or "sand-like" material, the derived values should not be used and therefore soil gas (recommended) or indoor air sampling should be done. Note: When screening soil concentrations, the decision to proceed in the screen is based on a non-exceedance rule, NOT the use of the 75%/lOx rule.

253-0300-1007 FINAL /Page 7 AR307594 • If the measured soil gas concentration is less than or equal to the MSGsc, then no further IAQ activity for soil is required. • If the measured indoor air concentration is less than or equal to the MSCiAQ, then no further IAQ activity for soil is required. These values are found in Table 3. The OSHA-derived screen (PA defaults) may be used when OSHA regulations are fully implemented and documented in a workplace building. In addition, PELs also prescribe concentrations that cannot be exceeded during a workday. If none of these generic options is met, then risk management (mitigation) activities may be warranted, including another comparison to MSCiAQ of either soil gas or measured indoor levels after mitigation. However, one may proceed to a site-specific risk analysis (including using the J&E model with site-specific input) in lieu of additional efforts under the Statewide health standard. If MSCsc or MSCiAQ is not exceeded, then no further IAQ activity for soil is warranted.

Sampling

For either matrix under the Statewide health standard, the presence of SPL requires sampling of either soil gas or indoor air at the location of the receptor for levels of regulated substances that may be present. In addition, the existence of preferential exposure pathways (see the Statewide health standard Definitions) moves the process to sampling. \ * Approaches for soil gas screening and interpretation and 1AQ sampling and interpretation are listed briefly in Table 6. Note that when sampling indoor air, many regulated substances have multiple sources and may be present in indoor air due to outdoor ambient levels or sources within the building rather than due to presence in groundwater or soil (e.g., benzene, chloroform). These constituents are identified on Table 3. Sources are found in a variety of household products such as paints, fuels, varnishes and cleaning solutions, from personal habits (e.g., smoking) or hobbies (e.g., glues and adhesives). Use caution in taking indoor air samples and interpreting the results in this context. * Sampling soil gas and indoor air is complex and should be approached with caution. A plan should be developed to assist in addressing data quality objectives before beginning sampling.

Odors

Odor perception is highly subjective and odors are not always an indication of a human health concern. Odor was evaluated during the development of the MSCiAQ because some substances can be detected by odor (odor threshold) at low concentrations in air, much lower than those that would cause a health concern. A comparison of the odor thresholds from literature sources to the corresponding MSCiAQ was done. The odor thresholds of approximately 10% of the compounds listed on Table 3 are lower than the residential MSCiAQ. Because there is not a substantial difference between the odor

253-0300-1007 FINAL /Page 8 AR307595 thresholds and the MSCiAQ, odors were not considered further in the IAQ scheme under the Statewide health standard.

253-0300-1007 FINAL /Page 9 AR307596 Pre-Screen Site: Determine if a potential pathway Next Steps for potentially complete pathways: Determine if the vapor intrusion pathway is presents negligible risk: Several Continue generic evaluation (A) or address IAQ (B) applicable and if the matrix should be used options available

For each constituent, evaluate against A START YES, No SPL or Preferential Path any appropriate option & continue J

YES Is MSC w (used aquifer) met Is Subsurface G NO for COPIACs (Tables 1 & 2) contamination within and > 5 feet of soil-like* 100 feet of an inhabited material? (A) building? Perform soil gas (recommended) or YES Is MSCow (non-used aquifer) indoor air met for non-COPIACs (Tables 1 measurement, if YES YES & 2) and is contamination at > 5 feet of soil-like* material? the pathway cannot be eliminated using Is SPL present at Do preferential YES or above water pathways exist? Is an appropriate J& E any of the table? screening level met (Tables 1 available generic & 2) and is contamination at evaluation YES YES > 5 feet of soil-like* material? options YES Is soil gas concentration < Matrix should not be used. screening level (100 x Continue evaluation with (A) MSCIAQ)? or(B). Is YES YES Is indoor air concentration < Met? MSC,Ao ? NO

'athway incomplete or presents negligible risk: \ (B) Address IAQ: C No further IAQ issues for Groundwater ) Perform site-specific analysis or mitigate * If the soil-like material below buildings is predominantly xand or sand-like, the derived values t should not be used (see the Statewide health standard Figure 1 GW IAQ Decision Matrix for the Statewide health standard 253-0300-1007 FINAL/Page 10 AR307597 Pre-Screen Site: Determine if the vapor Determine if a potential pathway Next Steps for potentially complete pathways: intrusion pathway is applicable and if the presents negligible risk: Several Continue generic evaluation (A) or address IAQ (B) matrix should be used options available

For each constituent, evaluate START against any appropriate option YES, No SPL or Preferential Path continue

Is Subsurface Are COPIACs (Tables 4 & 5) NO contamination within present? 100 feet of an inhabited (A) building? Perform soil gas Is an appropriate (recommended) or YES (Tables 4 & 5) met for non- indoor air COPIACs and is measurement, if YES YES contamination at > 5 feet of the pathway soil-like* material? cannot be eliminated using Is SPL Present at Do preferential Is an appropriate J& E any appropriate or above water pathways exist? screening level (Tables 4 & 5) generic evaluation table? YES met and is contamination at > options YES YES 5 feet of soil-like* material?

YES Is soil gas concentration < Matrix should not be used. screening level (100 x ODntinue evaluation using (A) MSC,AQ)? or(B) Is YES YES Is indoor air concentration < Met? MSCIAQ ? NO

->• ( Pathway incomplete or presents negligible risk: A (B) Address IAQ: V. No further IAQ issues for Soils J Perform site-specific analysis or mitigate

* If the soil-like material below buildings is predominantly t sand or sand-like, the derived values should not be used (see the Statewide health standard definitions). .^ AfatHxfaf fa Statewide heahh standard

253-0300-1007 FINAL /Page 1 1 AR307598 Table 1 Groundwater Screening Values (ug/L) for Protection of Indoor Air - Residential

CAS Regulated Substance Pennsylvania GW Pennsylvania GW PA Defaults Number MSC Used Aquifer MSC Nonuse Residential Aquifer Volatilization to Indoor Air Screen* 83-32-9 ACENAPHTHENE 2,200 3,800 NOC 208-96-8 ACENAPHTHYLENE 2,200 16,000 NOC 75-07-0 ACETALDEHYDE 19 19 260,000 67-64-1 ACETONE 3,700 37,000 NOC 75-05-8 ACETONITRILE 170 1,700 3,700,000 98-86-2 ACETOPHENONE 3,700 3,700 NOC 107-02-8 ACROLEIN 0.055 0.55 350 79-06-1 ACRYLAMIDE 0.033 0.033 97,000 79-10-7 ACRYLIC ACID 2.8 280 3,900,000 107-13-1 ACRYLONITRILE 0.63 63 7,300 107-18-6 ALLYL ALCOHOL 49 4,900 9,100,000 62-53-3 ANILINE 2.8 2.8 1,400,000 120-12-7 ANTHRACENE 66 66 NOC 71-43-2 BENZENE 5 500 3,500 98-07-7 BENZOTRICHLORIDE 0.051 51 95 100-44-7 BENZYL CHLORIDE 0.87 87 4,000 92-52-4 BIPHENYL, 1,1- 1,800 7,200 NOC 111-44-4 BIS(2-CHLOROETHYL)ETHER 0.13 13 13,000 108-60-1 BIS(2-CHLORO-ISOPROPYL)ETHER 300 30,000 55,000 542-88-1 BIS(CHLOROMETHYL)ETHER 0.00069 0.069 5 74-97-5 BROMOCHLOROMETHANE 90 90 84,000 75-27-4 BROMODICHLOROMETHANE 100 100 1,600 74-83-9 BROMOMETHANE 10 1,000 4,500 106-99-0 BUTADIENE, 1,3- 0.15 15 470 71-36-3 BUTYL ALCOHOL, N- 970 9,700 NOC 104-51-8 BUTYLBENZENE, N- t,500 1,500 NOC 135-98-8 BUTYLBENZENE, SEC- 1,500 1,500 NOC 98-06-6 BUTYLBENZENE, TERT- 1,500 1,500 NOC 75-15-0 CARBON DISULFIDE 1,900 1,900 550,000 56-23-5 CARBON TETRACHLORIDE 5 50 1,400 75-68-3 CHLORO-1,1-DIFLUOROETHANE, 1- 140,000 140,000 NOC 107-05-1 CHLORO-1-PROPENE, 3- (ALLYL 2.8 280 860 CHLORIDE) 108-90-7 CHLOROBENZENE 100 10,000 27,000 109-69-3 CHLOROBUTANE, 1- 15,000 15,000 NOC 124-48-1 CHLORODIBROMOMETHANE 100 10,000 3,800 75-45-6 CHLORODIFLUOROMETHANE 100 100 NOC 75-00-3 CHLOROETHANE 230 23,000 22,000 67-66-3 CHLOROFORM 100 1,000 410 91-58-7 CHLORONAPHTHALENE, 2- 2,900 2,900 NOC 95-57-8 CHLOROPHENOL, 2- 40 40 160,000 126-99-8 CHLOROPRENE 19 1,900 5,500 75-29-6 CHLOROPROPANE, 2- 280 280 83,000 95-49-8 CHLOROTOLUENE, O- 100 100 120,000 1319-77-3 CRESOL(S) 180 18,000 NOC

253-0300-1007 FINAL/Page 12 AR307599 Table 1 Groundwater Screening Values (ug/L) for Protection of Indoor Air - Residential

CAS Regulated Substance Pennsylvania GW Pennsylvania GW PA Defaults Number MSC Used Aquifer MSC Nonuse Residential Aquifer Volatilization to Indoor Air Screen* 95-48-7 CRESOL, O- (METHYLPHENOL, 2-) 1,800 180,000 NOC 4170-30-3 CROTONALDEHYDE 0.079 7.9 7,700 123-73-9 CROTONALDEHYDE, TRANS- 0.079 7.9 5,100 98-82-8 CUMENE 1,100 50,000 NOC 108-94-1 CYCLOHEXANONE 49,000 49,000 NOC 96-12-8 DIBROMO-3-CHLOROPROPANE, 1,2- 0.2 20 4,300 106-93-4 DIBROMOETHANE, 1,2- (ETHYLENE 0.05 5 620 DIBROMIDE) 74-95-3 DIBROMOMETHANE 97 9,700 130,000 764-41-0 DICHLORO-2-BUTENE, 1,4- 0.016 0.016 11 95-50-1 DICHLOROBENZENE, 1,2- 600 60,000 NOC 541-73-1 DICHLOROBENZENE, 1,3- 600 60,000 NA 106-46-7 DICHLOROBENZENE, 1,4- 75 7,500 8,100 75-71-8 DICHLORODIFLUOROMETHANE 1,000 100,000 110,000 (FREON 12) 75-34-3 DICHLOROETHANE, 1,1- 27 270 160,000 107-06-2 DICHLOROETHANE, 1,2- 5 50 2,800 75-35-4 DICHLOROETHYLENE, 1,1- 7 70 160,000 156-59-2 DICHLOROETHYLENE, CIS-1,2- 70 700 42,000 156-60-5 DICHLOROETHYLENE, TRANS-1,2- 100 1,000 59,000 75-09-2 DICHLOROMETHANE (METHYLENE 5 500 77,000 CHLORIDE) 78-87-5 DICHLOROPROPANE, 1,2- 5 50 3,900 542-75-6 DICHLOROPROPENE, 1,3- 6.6 660 5,100 75-99-0 DICHLOROPROPIONIC ACID , 2,2- 200 20,000 NOC (DALAPON) 77-73-6 DICYCLOPENTADIENE 0.55 0.55 250 121-69-7 DIMETHYLANILINE, N,N- 73 7,300 400,000 123-91-1 DIOXANE, 1,4- 5.6 56 1,500,000 106-89-8 EPICHLOROHYDRIN 2.8 280 84,000 110-80-5 ETHOXYETHANOL, 2- (EGEE) 550 55,000 720,000,000 141-78-6 ETHYL ACETATE 8,700 870,000 59,000,000 140-88-5 ETHYL ACRYLATE 3.1 310 14,000 100-41-4 ETHYL BENZENE 700 70,000 27,000 759-94-4 ETHYL DIPROPYLTHIOCARBAMATE, 910 910 NOC S- (EPTC) 60-29-7 ETHYL ETHER 1,900 1,900 1,700,000 97-63-2 ETHYL METHACRYLATE 870 870 1,700,000 107-21-1 ETHYLENE GLYCOL 14,000 1,400,000 NOC 86-73-7 FLUORENE 1,500 1,900 NOC 75-69-4 FLUOROTRICHLOROMETHANE 2,000 200,000 520,000 (FREON 11) 50-00-0 FORMALDEHYDE 1,000 100,000 3,700,000 64-18-6 FORMIC ACID 19,000 190,000 NOC 110-00-9 FURAN . 9.7 970 3,400

253-0300-1007 FINAL /Page 13 AR307600 Table 1 Groundwater Screening Values (ug/L) for Protection of Indoor Air - Residential

CAS Regulated Substance Pennsylvania GW Pennsylvania GW PA Defaults Number MSC Used Aquifer MSC Nonuse Residential Aquifer Volatilization to Indoor Air Screen* 98-01-1 FURFURAL 110 110 40,000,000 110-54-3 HEXANE 550 550 NOC 302-01-2 HYDRAZINE/HYDRAZINE SULFATE 0.0088 0.088 10,000 78-83-1 ISOBUTYL ALCOHOL 2,900 290,000 NOC 126-98-7 METHACRYLONITRILE 1.9 1.9 7,200 67-56-1 METHANOL 4,900 490,000 850,000,000 109-86-4 METHOXYETHANOL, 2- 37 37 80,000,000 79-20-9 M ETHYL ACETATE 37,000 37,000 68,000,000 96-33-3 METHYL ACRYLATE 1,100 110,000 1,300,000 74-87-3 METHYL CHLORIDE 3 300 17,000 78-93-3 METHYL ETHYL KETONE 2,800 280,000 49,000,000 108-10-1 METHYL ISOBUTYL KETONE 190 19,000 540,000 80-62-6 METHYL METHACRYLATE 1,900 190,000 6,000,000 25013-15-4 METHYL STYRENE (MIXED ISOMERS) 220 220 43,000 1634-04-4 METHYL TERT-BUTYL ETHER (MTBE) 20 200 380,000 91-57-6 METHYLNAPHTHALENE, 2- 730 730 NOC 98-83-9 METHYLSTYRENE, ALPHA 680 680 59,000 91-20-3 NAPHTHALENE 100 30,000 25,000 98-95-3 NITROBENZENE 18 18,000 290,000 88-75-5 NITROPHENOL, 2- 290 290,000 NOC 79-46-9 NITROPROPANE, 2- 0.016 0.16 190 55-18-5 NITROSODIETHYLAMINE, N- 0.001 0.01 440 62-75-9 NITROSODIMETHYLAMINE, N- 0.0031 0.031 3,800 924-16-3 NITROSO-DI-N-BUTYLAMINE, N- 0.027 2.7 12,000 11104-28-2 PCB-1221 (AROCLOR) 1.3 1.3 NA 85-01-8 PHENANTHRENE 1,100 1,100 NOC 108-95-2 PHENOL 4,000 400,000 NOC 103-65-1 PROPYLBENZENE, N- 1,500 1,500 NOC 75-56-9 PROPYLENE OXIDE 2.8 2.8 180,000 110-86-1 PYRIDINE 9.7 97 750,000 100-42-5 STYRENE 100 10,000 NOC 630-20-6 TETRACHLOROETHANE, 1,1,1,2- 70 7,000 6,400 79-34-5 TETRACHLOROETHANE, 1,1,2,2- 0.3 30 3,700 127-18-4 TETRACHLOROETHYLENE (PCE) 5 50 42,000 108-88-3 TOLUENE 1,000 100,000 490,000 75-25-2 TRIBROMOMETHANE (BROMOFORM) 100 10,000 180,000 76-13-1 TRICHLORO-1,2,2- 83,000 170,000 NOC TRIFLUOROETHANE, 1,1,2- 120-82-1 TRICHLOROBENZENE, 1,2,4- 70 4,4000 NOC 108-70-3 TRICHLOROBENZENE, 1,3,5- 40 40 NOC 71-55-6 TRICHLOROETHANE, 1,1,1- 200 2,000 NOC 79-00-5 TRICHLOROETHANE, 1,1,2- 5 50 5400 79-01-6 TRICHLOROETHYLENE (TCE) 5 50 14,000 598-77-6 TRICHLOROPROPANE, 1,1,2- 180 180 180,000 96-18-4 TRICHLOROPROPANE, 1,2,3- 40 4000 110

253-0300-1007 FINAL/Page 14 AR307601 Table 1 Groundwater Screening Values (yg/L) for Protection of Indoor Air - Residential

CAS Regulated Substance Pennsylvania GW Pennsylvania GW PA Defaults Number MSC Used Aquifer MSC Nonuse Residential Aquifer Volatilization to Indoor Air Screen* 96-19-5 TRICHLOROPROPENE, 1,2,3- 180 180 19,000 95-63-6 TRIMETHYLBENZENE, 1,3,4- 16 1,600 8,600 (TRIMETHYLBENZENE, 1,2,4-) 108-67-8 TRIMETHYLBENZENE, 1,3,5- 16 16 7200 108-05-4 VINYL ACETATE 550 550 1,100,000 593-60-2 VINYL BROMIDE (BROMOETHENE) 1.4 14 520 75-01-4 VINYL CHLORIDE 2 20 1800 1330-20-7 XYLENES (TOTAL) 10,000 180,000 130000

* PA defaults using USEPA J&E GWSCREEN.XLS version 2.3 03/01; PA Soils parameters; 15 cm to bottom of enclosed space; 150 cm to water table; RL = 10~5; HQ =1 NOC - Not of concern, value above constituent water solubility NA - Not available Note: Bold face values indicate a COPIAC

253-0300-1007 FINAL /Page 15 AR307602 \ Table 2 Groundwater Screening Values (ug/L) for Protection of Indoor Air: Nonresidential (Commercial/Industrial)

CAS Regulated Substance Pennsylvania Pennsylvania USEPA-PA USEPA-PA Defaults Number GWMSC GWMSC Defaults Nonresidential PELs Used Aquifer Nonuse Nonresidential Volatilization to Aquifer Volatilization to Indoor Air Screen2 Indoor Air Screen1 83-32-9 ACENAPHTHENE 3,800 3,800 NOC NOC 208-96-8 ACENAPHTHYLENE 6,100 16,000 NOC NOC 75-07-0 ACETALDEHYDE 52 52 360,000 NOC 67-64-1 ACETONE 10,000 100,000 NOC NOC 75-05-8 ACETONITRILE 350 3,500 5,200,000 NOC 98-86-2 ACETOPHENONE 10,000 10,000 NOC NOC 107-02-8 ACROLEIN 0.12 1.2 480 4,200,000 79-06-1 ACRYLAMIDE 0.14 0.14 160,000 1,600,000,000 79-10-7 ACRYLIC ACID 5.8 580 5,400,000 NOC 107-13-1 ACRYLONITRILE 2.7 270 12,000 NOC 107-18-6 ALLYL ALCOHOL 100 10,000 13,000,000 NOC 62-53-3 ANILINE 5.8 5.8 1,900,000 NOC 120-12-7 ANTHRACENE 66 66 NOC NOC 71-43-2 BENZENE 5 500 5,900 NOC 98-07-7 BENZOTRICHLORIDE 0.2 200 160 NOC 100-44-7 BENZYL CHLORIDE 3.7 370 6,700 NOC 92-52-4 BIPHENYL, 1,1- 5,100 7,200 NOC NOC 111-44-4 BIS(2-CHLOROETHYL)ETHER 0.55 55 22,000 NOC 108-60-1 BIS(2-CHLORO- 300 30,000 92,000 NOC ISOPROPYDETHER 542-88-1 BIS(CHLOROMETHYL)ETHER 0.0029 0.29 8.4 NOC 74-97-5 BROMOCHLOROMETHANE 90 90 120,000 NOC 75-27-4 BROMODICHLOROMETHANE 100 100 2,700 NOC 74-83-9 BROMOMETHANE 10 1,000 6,300 NOC 106-99-0 BUTADIENE, 1,3- 0.65 65 800 NOC 71-36-3 BUTYL ALCOHOL, N- 2,000 20,000 NOC NOC 104-51-8 BUTYLBENZENE, N- 4,100 4,100 NOC NOC 135-98-8 BUTYLBENZENE, SEC- 4,100 4,100 NOC NOC 98-06-6 BUTYLBENZENE, TERT- 4,100 4,100 NOC NOC 75-15-0 CARBON DISULFIDE 4,100 4,100 770,000 NOC 56-23-5 CARBON TETRACHLORIDE 5 50 2,400 NOC 75-68-3 CHLORO-1,1-DIFLUOROETHANE, 290,000 290,000 NOC NOC 1- 107-05-1 CHLORO-1-PROPENE, 3- (ALLYL 5.8 580 1,200 2,500,000 CHLORIDE) 108-90-7 CHLOROBENZENE 100 1,0000 38,000 NOC 109-69-3 CHLOROBUTANE, 1- 4,1000 41,000 NOC NOC 124-48-1 CHLORODIBROMOMETHANE 100 10,000 6,300 NOC 75-45-6 CHLORODIFLUOROMETHANE 100 100 NOC NOC 75-00-3 CHLOROETHANE 900 90,000 3,7000 NOC 67-66-3 CHLOROFORM 100 1,000 580 NOC 91-58-7 CHLORONAPHTHALENE, 2- 8,200 8,200 NOC NOC 95-57-8 CHLOROPHENOL, 2- 40 40 230,000 NOC 126-99-8 CHLOROPRENE 41 4,100 7,700 NOC

253-0300-100/ FINAL /Page 16 AR307603 Table 2 Groundwater Screening Values (ug/L) for Protection of Indoor Air: Nonresidential (Commercial/Industrial)

CAS Regulated Substance Pennsylvania Pennsylvania USEPA-PA USEPA-PA Defaults Number GWMSC GWMSC Defaults Nonresidential PELs Used Aquifer Nonuse Nonresidential Volatilization to Aquifer Volatilization to Indoor Air Screen2 Indoor Air Screen1 75-29-6 CHLOROPROPANE, 2- 580 580 120,000 NOC 95-49-8 CHLOROTOLUENE, O- 100 100 170,000 NOC 1319-77-3 CRESOL(S) 510 51,000 NOC NOC 95-48-7 CRESOL, O- (METHYLPHENOL, 5,100 510,000 NOC NOC 2-) 4170-30-3 CROTONALDEHYDE 0.34 34 13,000 NOC 123-73-9 CROTONALDEHYDE, TRANS- 0.34 34 8,500 NOC 98-82-8 CUMENE 2,300 50,000 NOC NOC 108-94-1 CYCLOHEXANONE 100,000 100,000 NOC NOC 96-12-8 DIBROMO-3-CHLOROPROPANE, 0.2 20 6,000 200,000 1,2- 106-93-4 DIBROMOETHANE, 1,2- 0.05 5 1,000 NOC (ETHYLENE DIBROMIDE) 74-95-3 DIBROMOMETHANE 200 20,000 180,000 NOC 764-41-0 DICHLORO-2-BUTENE, 1,4- 0.069 0.069 18 NOC 95-50-1 DICHLOROBENZENE, 1,2- 600 60,000 NOC NOC 541-73-1 DICHLOROBENZENE, 1,3- 600 60,000 NA NA 106-46-7 DICHLOROBENZENE, 1,4- 75 7,500 14,000 NOC 75-71-8 DICHLORODIFLUOROMETHANE 1,000 100,000 160,000 NOC (FREON 12) 75-34-3 DICHLOROETHANE, 1,1- 110 1,100 26,000 NOC 107-06-2 DICHLOROETHANE, 1,2- 5 50 4,600 NOC 75-35-4 DICHLOROETHYLENE, 1,1- 7 70 220,000 NOC 156-59-2 DICHLOROETHYLENE, CIS-1,2- 70 700 5,9000 NOC 156-60-5 DICHLOROETHYLENE, TRANS- 100 1,000 83,000 NOC 1,2- 75-09-2 DICHLOROMETHANE 5 500 130,000 NOC (METHYLENE CHLORIDE) 78-87-5 DICHLOROPROPANE, 1,2- 5 50 6,500 NOC 542-75-6 DICHLOROPROPENE, 1,3- 26 2,600 8600 NOC 75-99-0 DICHLOROPROPIONIC ACID , 200 20,000 NOC NOC 2,2- (DALAPON) 77-73-6 DICYCLOPENTADIENE 1.2 1.2 350 NOC 121-69-7 DIMETHYLANILINE, N,N- 200 20,000 560,000 NOC 123-91-1 DIOXANE, 1,4- 24 240 2,500,000 NOC 106-89-8 EPICHLOROHYDRIN 5.8 580 120,000 NOC 110-80-5 ETHOXYETHANOL, 2- (EGEE) 1,200 120,000 NOC NOC 141-78-6 ETHYL ACETATE 18,000 1,800,000 NOC NOC 140-88-5 ETHYL ACRYLATE 13 1,300 24,000 NOC 100-41-4 ETHYL BENZENE 700 70,000 45,000 NOC 759-94-4 ETHYL 2,600 2,600 NOC NOC DIPROPYLTHIOCARBAMATE, S- (EPTC) 60-29-7 ETHYL ETHER. 4,100 4,100 2,400,000 NOC 97-63-2 ETHYL METHACRYLATE 1,800 1,800 2,400,000 NOC 107-21-1 ETHYLENE GLYCOL 14,000 1,400,000 NOC NOC

253-0300-1OO/ FINAL /Page 17 AR307604 1 Table 2 Groundwater Screening Values (ug/L) for Protection of Indoor Air: Nonresidential (Commercial/Industrial)

CAS Regulated Substance Pennsylvania Pennsylvania USEPA-PA USEPA-PA Defaults Number GWMSC GWMSC Defaults Nonresidential PELs Used Aquifer Nonuse Nonresidential Volatilization to Aquifer Volatilization to Indoor Air Screen2 Indoor Air Screen1 86-73-7 FLUORENE 1,900 1,900 NOG NOC 75-69-4 FLUOROTRICHLOROMETHANE 2,000 200,000 730,000 NOC (FREON11) 50-00-0 FORMALDEHYDE 1,000 100,000 6,300,000 NOC 64-18-6 FORMIC ACID 41,000 410,000 NOC NOC 110-00-9 FURAN 20 2,000 4,700 NOC 98-01-1 FURFURAL 290 290 56,000,000 NOC 110-54-3 HEXANE 1,200 1,200 NOC NOC 302-01-2 HYDRAZINE/HYDRAZINE 0.038 0.38 17,000 NOC SULFATE 78-83-1 ISOBUTYL ALCOHOL 6,100 610,000 NOC NOC 126-98-7 METHACRYLONITRILE 4.1 4.1 10,000 NOC 67-56-1 METHANOL 10,000 1,000,000 NOC NOC 109-86-4 METHOXYETHANOL, 2- 100 100 110,000,000 NOC 79-20-9 METHYL ACETATE 100,000 100,000 95,000,000 NOC 96-33-3 METHYL ACRYLATE 3,100 310,000 1,800,000 NOC 74-87-3 METHYL CHLORIDE 3 300 28,000 NOC 78-93-3 METHYL ETHYL KETONE 5,800 580,000 69,000,000 NOC 108-10-1 METHYL ISOBUTYL KETONE 410 41,000 760,000 NOC 80-62-6 METHYL METHACRYLATE 4,100 410,000 8,300,000 NOC 25013-15- METHYL STYRENE (MIXED 610 610 60,000 NOC 4 ISOMERS) 1634-04-4 METHYL TERT-BUTYL ETHER 20 200 640,000 NOC (MTBE) 91-57-6 METHYLNAPHTHALENE, 2- 2,000 2,000 NOC NOC 98-83-9 METHYLSTYRENE, ALPHA 1,400 1,400 83,000 NOC 91-20-3 NAPHTHALENE 100 30,000 NOC NOC 98-95-3 NITROBENZENE 51 51 000 410000 NOC 88-75-5 NITROPHENOL, 2- 820 820,000 NOC NOC 79-46-9 NITROPROPANE, 2- 0.068 0.68 320 NOC 55-18-5 NITROSODIETHYLAMINE, N- 0.0043 0.043 740 NOC 62-75-9 NITROSODIMETHYLAMINE, N- 0.013 0.13 6,400 NOC 924-16-3 NITROSO-DI-N-BUTYLAMINE, N- 0.11 11 21,000 NOC 11104-28-2 PCB-1221 (AROCLOR) 5.2 5.2 NA NA 85-01-8 PHENANTHRENE 1,100 1,100 NOC NOC 108-95-2 PHENOL 4,000 400,000 NOC NOC 103-65-1 PROPYLBENZENE, N- 4,100 4,100 NOC NOC 75-56-9 PROPYLENE OXIDE 11 11 300,000 NOC 110-86-1 PYRIDINE 20 200 1,100,000 NOC 100-42-5 STYRENE 100 10,000 NOC NOC 630-20-6 TETRACHLOROETHANE, 1,1,1,2- 70 7000 11,000 NOC 79-34-5 TETRACHLOROETHANE, 1,1,2,2- 0.3 30 6,200 NOC 127-18-4 TETRACHLOROETHYLENE (PCE) 5 50 70,000 NOC 108-88-3 TOLUENE 1,000 100,000 NOC NOC 75-25-2 TRIBROMOMETHANE 100 10,000 310,000 NOC

253-0300-1007 FINAL /Page 18 AR307605 Table 2 Groundwater Screening Values (pg/L) for Protection of Indoor Air: Nonresidential (Commercial/Industrial)

1PA defaults using USEPA J&E Version 2.3; 03/01, Nonresidential receptor, RL = 10~5, HQ = 1 2PA defaults using USEPA J&E Version 2.3; 03/01, Nonresidential receptor; Use this OSHA-derived Screen when OSHA regulations are fully implemented and documented inside a workplace building. NA - Not available NOC - Not of concern, value above constituent water solubility Note: Bold face values indicate a COPIAC

AR307606 253-0300-100/ FINAL /Page 19 Tables Indoor Air Criteria and Odor Thresholds CAS Regulated Substance Residential Nonresidential EPA Region III ACGIH OSHA Odor Number MSC (mg/m3) MSC (mg/m3) RBC (mg/m3)* TLV PEL Threshold (mg/m3) (mg/m3) (mg/m3) 83-32-9 ACENAPHTHENE 0.29 0.61 0.22 0.50 208-96-8 ACENAPHTHYLENE 0.29 0.61 75-07-0 ACETALDEHYDE 0.0095 0.027 0.0081 180 360 0.38 67-64-1 ACETONE 43 91 0.37 1,188 2,400 237 75-05-8 ACETONITRILE 0.083 0.17 0.062 67 70 70 98-86-2 ACETOPHENONE 0.49 1 0.000021 49 0.01-0.025 107-02-8 ACROLEIN 0.000028 0.000058 0.000021 0.23 0.25 0.48 79-06-1 ACRYLAMIDE 0.000016 0.000063 0.000014 0.03 0.3 79-10-7 ACRYLIC ACID 0.0014 0.0029 5.9 0.28 107-13-1 ACRYLONITRILE 0.00031 0.0012 0.00026 4.3 4.34 46.4 107-18-6 ALLYL ALCOHOL 0.024 0.051 1.2 5 1.95 62-53-3 ANILINE 0.0014 0.0029 0.0011 7.6 19 7.6 120-12-7 ANTHRACENE 1.5 3.1 1.1 71-43-2 BENZENE 0.0027 (1) 0.011 0.0022 1.6 3.19 2.7 98-07-7 BENZOTRICHLORIDE 0.0000056 0.000022 100-44-7 BENZYL CHLORIDE 0.00043 0.0017 0.00037 5.2 5 0.24 92-52-4 BIPHENYL, 1,1- 0.24 0.51 0.18 1.3 1 0.005 111-44-4 BIS(2-CHLOROETHYL)ETHER 0.000064 0.00025 0.000057 29 ceiling 90 limit: 90 108-60-1 BIS(2-CHLORO-ISOPROPYL)ETHER 0.0021 0.0082 0.0018 2.2 542-88-1 BIS(CHLOROMETHYL)ETHER 0.00000034 0.0000013 0.00000028 0.0047 74-97-5 BROMOCHLOROMETHANE 0.049 0.1 1,060 1,050 2,100 75-27-4 BROMODICHLOROMETHANE 0.00057 0.0022 0.0010 1,680 74-83-9 BROMOM ETHANE 0.0068 0.014 0.0051 20 ceiling 80 limit: 80 106-99-0 BUTADIENE, 1,3- 0.00067 0.0026 0.000035 4.4 2.2 4 71-36-3 BUTYL ALCOHOL, N- 0.49 1 0.37 152 300 2.5 104-51-8 BUTYLBENZENE, N- 0.19 0.41 0.15 135-98-8 BUTYLBENZENE, SEC- 0.19 0.41 0.15 98-06-6 BUTYLBENZENE, TERT- 0.19 0.41 0.15 75-15-0 CARBON DISULFIDE 0.97 2 0.73 31 62 0.30 56-23-5 CARBON TETRACHLORIDE 0.0014 (1) 0.0055 0.0012 31 62.9 135 75-68-3 CHLORO-1.1-DIFLUOROETHANE, 1- 70 150 51 107-05-1 CHLORO-1-PROPENE, 3- (ALLYL CHLORIDE) 0.0014 . 0.0029 3 3 1.5

AR307607 253-0300-1007 FINAL /Page 20 Table 3 Indoor Air Criteria and Odor Thresholds CAS Regulated Substance Residential Nonresidential EPA Region III ACGIH OSHA Odor Number MSC (mg/m3) MSC (mg/m3) RBC (mg/m3)* TLV PEL Threshold (mg/m3) (mg/m3) (mg/m3) 108-90-7 CHLOROBENZENE 0.024 0.051 0.062 46 350 1.0 109-69-3 CHLOROBUTANE, 1- 1.9 4.1 1.5 3.3352 124-48-1 CHLORODIBROMOMETHANE 0.00078 0.003 0.00075 75-45-6 CHLORODIFLUOROMETHANE 68 140 51 3,540 75-00-3 CHLOROETHANE 0.025 0.099 0.022 2,640 2,600 10-12 67-66-3 CHLOROFORM 0.00044 (1) 0.00092 0.00031 49 Ceiling 415 limit: 240 91-58-7 CHLORONAPHTHALENE, 2- 0.39 0.82 0.29 95-57-8 CHLOROPHENOL, 2- 0.024 0.051 0.018 0.11 126-99-8 CHLOROPRENE 0.0097 0.02 0.0073 36 90 55 75-29-6 CHLOROPROPANE, 2- 0.14 0.29 0.11 95-49-8 CHLOROTOLUENE, O- 0.097 - 0.2 0.073 255 1.1 1319-77-3 CRESOL(S) 0.024 0.051 22 22 0.012 95-48-7 CRESOL, O- (METHYLPHENOL, 2-) 0.24 0.51 0.18 22 22 4170-30-3 CROTONALDEHYDE 0.000039 0.00015 0.85 6 1.4 123-73-9 CROTONALDEHYDE, TRANS- 0.000039 0.00015 0.000033 0.85 6 1.4 98-82-8 CUMENE 0.54 1.1 0.40 245 245 0.06 108-94-1 CYCLOHEXANONE 24 51 18 100 200 0.48 96-12-8 DIBROMO-3-CHLOROPROPANE, 1,2- 0.00028 0.00058 0.00021 0.0097 0.3 106-93-4 DIBROMOETHANE, 1,2- (ETHYLENE 0.000095 0.00037 0.000082 153.8 192 DIBROMIDE) 74-95-3 DIBROMOMETHANE 0.049 0.1 0.037 764-41-0 DICHLORO-2-BUTENE, 1,4- 0.0000079 0.000031 0.0000067 0.026 95-50-1 DICHLOROBENZENE, 1,2- 0.19 0.41 0.15 150 ceiling 12-24 limit: 300 - 541-73-1 DICHLOROBENZENE, 1,3- 0.11 0.12 106-46-7 DICHLOROBENZENE.1,4- 0.0033 (1) 0.013 0.0028 60 450 180-360 75-71-8 DICHLORODIFLUOROMETHANE (FREON 12) 0.24 0.51 0.18 4,950 4,950 75-34-3 DICHLOROETHANE, 1,1- 0.013 0:05 0.51 405 400 490-810 107-06-2 DICHLOROETHANE, 1,2- 0.00081 0.0031 0.00069 40 202.5 24-160 75-35-4 DICHLOROETHYLENE, 1,1- 0.28 0.58 0.00036 20 2000-4000 156-59-2 DICHLOROETHYLENE, CIS-1,2- 0.049 0.1 0.037 793 790 0.34 156-60-5 DICHLOROETHYLENE, TRANS-1,2- 0.097 0.2 0.073 793 790 0.3357

AR307608 253-0300-1007 FINAL /Page 21 Table 3 Indoor Air Criteria and Odor Thresholds CAS Regulated Substance Residential Nonresidential EPA Region III ACGIH OSHA Odor Number MSC (mg/m3) MSC (mg/m3) RBC (mg/m3)* TLV PEL Threshold (mg/ms) (mg/m3) (mg/m3) 75-09-2 DICHLOROMETHANE (METHYLENE 0.044 0.17 0.038 174 86.75 712-1070 CHLORIDE) 78-87-5 DICHLOROPROPANE, 1,2- 0.002 0.0079 0.00092 347 350 231 542-75-6 DICHLOROPROPENE, 1,3- 0.0052 0.02 0.0063 4.5 14 75-99-0 DICHLOROPROPIONIC ACID, 2,2- (DALAPON) . 0.15 0.31 0.11 5 2500 77-73-6 DICYCLOPENTADIENE 0.00028 0.00058 0.00022 27 0.02 121-69-7 DIMETHYLANILINE, N,N- 0.0097 0.02 0.0073 25 25 0.064 123-91-1 DIOXANE.1,4- 0.0027 0.011 0.0057 90 360 612 106-89-8 EPICHLOROHYDRIN 0.0014 0.0029 0.0010 7.6 19 38 110-80-5 ETHOXYETHANOL, 2- (EGEE) 0.28 0.58 0.21 18 740 460 141-78-6 ETHYL ACETATE 4.4 9.2 3.3 1,440 1,400 2.2 140-88-5 ETHYL ACRYLATE 0.0015 0.006 20 100 0.004 100-41-4 ETHYL BENZENE 0.019 0.073 1.1 434 435 608 759-94-4 ETHYL DIPROPYLTHIOCARBAMATE, S- 0.12 0.26 (EPTC) 60-29-7 ETHYL ETHER 0.97 2 0.73 1,210 1,200 1.00 97-63-2 ETHYL METHACRYLATE 0.44 0.92 0.33 0.40 107-21-1 ETHYLENE GLYCOL 9.7 20 7.3 100 60.3 86-73-7 FLUORENE 0.19 0.41 0.15 75-69-4 FLUOROTRICHLOROMETHANE (FREON 11) 0.97 2 0.73 5,620 5,600 28 50-00-0 FORMALDEHYDE 0.0016 0.0063 0.0014 0.37 0.92 1.47 64-18-6 FORMIC ACID 9.7 20 7.30 9.4 9 53 110-00-9 FURAN 0.0049 0.01 0.0037 98-01-1 FURFURAL 0.07 0.15 0.037 7.9 20 0.024 110-54-3 HEXANE 0.28 0.58 0.21 176 1,800 458 302-01-2 HYDRAZINE/HYDRAZINE SULFATE 0.0000043 0.000017 0.0000037 0.13 1.3 4.8 78-83-1 ISOBUTYL ALCOHOL 1.5 3.1 1.1 152 300 121 126-98-7 METHACRYLONITRILE 0.00097 0.002 0.00073 2.7 5.8 67-56-1 METHANOL 2.4 5.1 1.8 262 260 5.6 109-86-4 METHOXYETHANOL, 2- 0.028 0.058 16 80 2.8 79-20-9 METHYL ACETATE 4.9 10 3.7 606 610 606 96-33-3 METHYL ACRYLATE 0.15 0.31 0.11 35 35 0.017 74-87-3 METHYL CHLORIDE 0.012 0.045 0.018 103 206 21 78-93-3 METHYL ETHYL KETONE 1.4 2.9 1 590 590 6

253-0300-1007 FINAL /Page 22 AR307609 Tables Indoor Air Criteria and Odor Thresholds CAS Regulated Substance Residential Nonresidential EPA Region III ACGIH OSHA Odor Number MSC (mg/m3) MSC (mg/m3) RBC (mg/m3)* TLV PEL Threshold (mg/m3) (mg/m3) (mg/m3) 108-10-1 METHYL ISOBUTYL KETONE 0.097 0.2 0.073 205 410 0.41 80-62-6 METHYL METHACRYLATE 0.97 2 0.73 410 410 0.86 25013-15-4 METHYL STYRENE (MIXED ISOMERS) 0.049 0.1 0.037 242 480 240 1634-04-4 METHYL TERT-BUTYL ETHER (MTBE) 0.081 0.31 3.1 144 0.19-0.69 91-57-6 METHYLNAPHTHALENE, 2- 0.0042 0.0088 0.073 0.06 98-83-9 METHYLSTYRENE, ALPHA 0.049 0.1 0.26 242 ceiling 0.25 limit: 480 91-20-3 NAPHTHALENE 0.0042 0.0088 0.0033 50 50 0.02 98-95-3 NITROBENZENE 0.0029 0.0061 0.0022 5 5 0.0235 88-75-5 NITROPHENOL, 2- 0.039 0.082 0.0012 79-46-9 NITROPROPANE, 2- 0.0000078 0.00003 0.0000067 36 90 17.5 55-18-5 NITROSODIETHYLAMINE, N- 0.00000049 0.0000019 0.00000042 62-75-9 NITROSODIMETHYLAMINE, N- 0.0000015 0.0000058 0.0000012 924-16-3 NITROSO-DI-N-BUTYLAMINE, N- 0.000013 0.000051 0.000011 11104-28-2 PCB-1221 (AROCLOR) 0.001 0.0041 0.000031 85-01-8 PHENANTHRENE 1.5 3.1 108-95-2 PHENOL 1.5 3.1 1.1 19 19 0.062 103-65-1 PROPYLBENZENE, N- 0.19 0.41 0.15 75-56-9 PROPYLENE OXIDE 0.0056 0.022 48 240 475 110-86-1 PYRIDINE 0.0049 0.01 0.0037 15 0.068 100^42-5 STYRENE 1.4 2.9 1 85 426 0.630 630-20-6 TETRACHLOROETHANE, 1,1,1,2- 0.0028 0.011 0.0024 79-34-5 TETRACHLOROETHANE, 1,1,2,2- 0.00036 0.0014 0.00031 6.9 35 3 127-18-4 TETRACHLOROETHYLENE (PCE) 0.036 (1) 0.14 0.031 170 678 31.7 108-88-3 TOLUENE 0.56 1.2 0.42 188 754 0.64 75-25-2 TRIBROMOMETHANE (BROMOFORM) 0.019 0.074 0.016 5.2 5 13 76-13-1 TRICHLORO-1 ,2,2-TRIFLUOROETHANE, 1 ,1 ,2- 42 88 31 7,670 7,600 342 120-82-1 TRICHLOROBENZENE, 1,2,4- 0.02 0.079 0.0037 37 22 108-70-3 TRICHLOROBENZENE, 1,3,5- 0.28 0.58 71-55-6 TRICHLOROETHANE, 1,1,1- 2.9 6.1 2.3 1,910 1,900 545 79-00-5 TRICHLOROETHANE, 1,1,2- 0.0013 0.0051 0.0011 55 45 79-01-6 TRICHLOROETHYLENE (TCE) 0.01 2 (1) 0.048 0.01 269 537 115 598-77-6 TRICHLOROPROPANE, 1,1,2- 0.024 0.051 0.018 60 96-18-4 TRICHLOROPROPANE, 1,2,3- 0.00001 0.000041 0.000031 60 300

AR307610 253-0300-1007 FINAL /Page 23 Table 3 Indoor Air Criteria and Odor Thresholds CAS Regulated Substance Residential Nonresidential EPA Region III ACGIH OSHA Odor Number MSC (mg/m3) MSC (mg/m3) RBC (mg/m3)* TLV PEL Threshold (mg/m3) (mg/m3) (mg/m3) 96-19-5 TRICHLOROPROPENE, 1,2,3- 0.024 0.051 0.018 95-63-6 TRIMETHYLBENZENE, 1,3,4- 0.0083 0.017 0.0062 125 (TRIMETHYLBENZENE, 1,2,4-) 108-67-8 TRIMETHYLBENZENE, 1,3,5- 0.0083 0.017 0.0062 125 108-05-4 VINYL ACETATE 0.28 0.58 0.21 35 0.0235 593-60-2 VINYL BROMIDE (BROMOETHENE) 0.00067 0.0026 0.00057 2.2 75-01-4 VINYL CHLORIDE 0.0024 0.0095 0.00072 2.5 2.56 664 1330-20-7 XYLENES (TOTAL) 0.14 0.3 7.3 434 435 2 (1) - Compound is identified as having potentially higher indoor air background concentrations than the risk-based targets * EPA Region III RBCs were adjusted to cancer risk of 10~5 or HQ of 1.

Note: It must be noted that for reasons of background concentrations or other common household products effects, the values presented herein do not represent site-by-site health based considerations, and therefore cannot be compared to such site- specific analyses.

253-0300-1OO/ FINAL /Page 24 AR307611 Table 4 Soil Screening Values (mg/kg) for Protection of Indoor Air • Residential

CAS Regulated Substance Pennsylvania Soil- Pennsylvania Soil- Pennsylvania PA Defaults Number GW A/ISC Used GW MSC Nonuse Direct Contact Residential Aquifer Aquifer MSC 0-1 5 feet Volatilization to Residential Residential Residential Indoor Air Screen* 83-32-9 ACENAPHTHENE 2,700 4,700 13,000 NOC 208-96-8 ACENAPHTHYLENE 2,500 18,000 13,000 NOC 75-07-0 ACETALDEHYDE 1.9 1.9 140 33 67-64-1 ACETONE 370 3,700 10,000 110,000+ 75-05-8 ACETONITRILE 17 170 1,100 450 98-86-2 ACETOPHENONE 370 370 10,000 NOC 107-02-8 ACROLEIN 0.0055 0.055 0.38 0.042 79-06-1 ACRYLAMIDE 0.0033 0.0033 4 15 79-10-7 ACRYLIC ACID 0.28 28 19 670 107-13-1 ACRYLONITRILE 0.063 6.3 4.7 1.1 107-18-6 ALLYL ALCOHOL 4.9 490 330 1,100 62-53-3 ANILINE 0.28 0.28 19 840 120-12-7 ANTHRACENE 350 350 66,000 NOC 71-43-2 BENZENE 0.5 50 41 0.37 98-07-7 BENZOTRICHLORIDE 0.012 12 1.4 0.26 100-44-7 BENZYL CHLORIDE 0.087 8.7 6.4 2.4 92-52-4 BIPHENYL, 1,1- 790 3,100 11,000 NOC 111-44-4 BIS(2-CHLOROETHYL)ETHER 0.013 1.3 0.96 4.2 108-60-1 BIS(2-CHLORO-ISOPROPYL)ETHER 30 3,000 32 16 542-88-1 BIS(CHLOROMETHYL)ETHER 0.000069 0.0069 0.0051 0.00083 74-97-5 BROMOCHLOROMETHANE 9 9 2,200 13 75-27-4 BROMODICHLOROMETHANE 10 10 8.6 0.51 74-83-9 BROMOMETHANE 1 100 95 0.95 106-99-0 BUTADIENE, 1,3- 0.015 1.5 5.3 0.0098 71-36-3 BUTYL ALCOHOL, N- 97 970 6,600 8,800+ 104-51-8 BUTYLBENZENE, N- 950 950 8,800 NOC 135-98-8 BUTYLBENZENE, SEC- 350 350 8,800 NOC 98-06-6 BUTYLBENZENE, TERT- 270 270 8,800 NOC 75-15-0 CARBON DISULFIDE 190 190 10,000 47 56-23-5 CARBON TETRACHLORIDE 0.5 5 21 0.074 75-68-3 CHLORO-1.1-DIFLUOROETHANE, 1- 14,000 14,000 190,000 400+ 107-05-1 CHLORO-1-PROPENE, 3- (ALLYL CHLORIDE) 0.28 28 19 0.050

AR307612 253-0300-1007 FINAL /Page 25 Table 4 Soil Screening Values (mg/kg) for Protection of Indoor Air - Residential

CAS Regulated Substance Pennsylvania Soil- Pennsylvania Soil- Pennsylvania PA Defaults Number GW MSC Used GW MSC Nonuse Direct Contact Residential Aquifer Aquifer MSC 0-1 5 feet Volatilization to Residential Residential Residential Indoor Air Screen* 108-90-7 CHLOROBENZENE 10 1,000 4,400 9.0 109-69-3 CHLOROBUTANE, 1- 2,300 2,300 10,000 330 124-48-1 CHLORODIBROMOMETHANE 10 1,000 12 1.3 75-45-6 CHLORODIFLUOROMETHANE 10 10 190,000 740 75-00-3 CHLOROETHANE 23 2,300 6,200 1.1 67-66-3 CHLOROFORM 10 100 6 0.053 91-58-7 CHLORONAPHTHALENE, 2- 6,200 6,200 18,000 NOC 95-57-8 CHLOROPHENOL, 2- 4.4 4.4 330 190 126-99-8 CHLOROPRENE 1.9 190 130 0.15 75-29-6 CHLOROPROPANE, 2- 28 28 1,900 9.8 95-49-8 CHLOROTOLUENE, O- 20 20 4,400 150 1319-77-3 CRESOL(S) 18 1,800 1,100 NOC 95-48-7 CRESOL, O- (METHYLPHENOL, 2-) 180 10,000 10,000 NOC 4170-30-3 CROTONALDEHYDE 0.0079 0.79 9.4 1.0 123-73-9 CROTONALDEHYDE, TRANS- 0.0079 0.79 9.4 0.69 98-82-8 CUMENE 780 10,000 7,300 360+ 108-94-1 CYCLOHEXANONE 4,900 4,900 10,000 10,000+ 96-12-8 DIBROMO-3-CHLOROPROPANE, 1,2- 0.02 2 3.8 2.3 106-93-4 DIBROMOETHANE, 1,2- (ETHYLENE DIBROMIDE) 0.005 0.5 0.21 0.17 74-95-3 DIBROMOMETHANE 9.7 970 670 47 764-41-0 DICHLORO-2-BUTENE, 1,4- 0.0016 0.0016 91,000 0.002 95-50-1 DICHLOROBENZENE, 1,2- 60 6,000 3,800 150+ 541-73-1 DICHLOROBENZENE, 1,3- 61 6,100 6,600 NA 106-46-7 DICHLOROBENZENE, 1,4- 10 1,000 750 7.5 75-71-8 OICHLORODIFLUOROMETHANE (FREON 12) 100 10,000 3,800 1.9 75-34-3 DICHLOROETHANE, 1,1- 2.7 27 200 1.6 107-06-2 DICHLOROETHANE, 1,2- 0.5 5 12 0.49 75-35-4 DICHLOROETHYLENE, 1,1- 0.7 7 6.4 5.5 156-59-2 DICHLOROETHYLENE, CIS-1^2- 7 70 670 5.4 156-60-5 DICHLOROETHYLENE, TRANS-1,2- 10 100 1,300 4.6 75-09-2 DICHLOROMETHANE (METHYLENE CHLORIDE) 0.5 50 680 8.1 78-87-5 DICHLOROPROPANE, 1 ,2- 0.5 5 31 0.52

253-0300-1007 FINAL /Page 26 AR307613 1 Table 4 Soil Screening Values (mg/kg) for Protection of Indoor Air - Residential

CAS Regulated Substance Pennsylvania Soil- Pennsylvania Soil- Pennsylvania PA Defaults Number GW MSC Used GW MSC Nonuse Direct Contact Residential Aquifer Aquifer MSC 0-1 5 feet Volatilization to Residential Residential Residential Indoor Air Screen* 542-75-6 DICHLOROPROPENE, 1,3- 0.66 66 80 0.20 75-99-0 DICHLOROPROPIONIC ACID, 2,2- (DALAPON) 20 2,000 2,000 130,000+ 77-73-6 DICYCLOPENTADIENE 0.12 0.12 6,600 0.15 121-69-7 DIMETHYLANILINE, N,N- 7.3 730 440 240 123-91-1 DIOXANE, 1,4- 0.56 5.6 41 200 106-89-8 EPICHLOROHYDRIN 0.28 28 19 18 110-80-5 ETHOXYETHANOL, 2- (EGEE) 55 5,500 3,800 97,000 141-78-6 ETHYL ACETATE 870 10,000 10,000 16,000 140-88-5 ETHYL ACRYLATE 0.31 31 23 5.6 100-41-4 ETHYL BENZENE 70 7,000 10,000 5.7 759-94-4 ETHYL DIPROPYLTHIOCARBAMATE, S- (EPTC) 91 91 5,500 260+ 60-29-7 ETHYL ETHER 190 190 10,000 390 97-63-2 ETHYL METHACRYLATE 87 87 20,000 270 107-21-1 ETHYLENE GLYCOL 1,400 10,000 10,000 120,000+ 86-73-7 FLUORENE 3,000 3,800 8,800 NOC 75-69-4 FLUOROTRICHLOROMETHANE (FREON 11) 200 10,000 10,000 9.6 50-00-0 FORMALDEHYDE 100 10,000 24 420 64-18-6 FORMIC ACID 1,900 . 10,000 10,000 110,000+ 110-00-9 FURAN 0.97 97 220 0.65 98-01-1 FURFURAL 11 11 660 5,400 110-54-3 HEXANE 500 500 3,800 2.9 302-01-2 HYDRAZINE/HYDRAZINE SULFATE 0.00088 0.0088 0.065 1.0 78-83-1 ISOBUTYL ALCOHOL 290 10,000 10,000 21,000+ 126-98-7 METHACRYLONITRILE 0.19 0.19 13 1.3 67-56-1 METHANOL 490 10,000 10,000 110,000 109-86-4 METHOXYETHANOL, 2- 3.7 3.7 220 8,600 79-20-9 METHYL ACETATE 3,700 3,700 10,000 14,000 96-33-3 METHYL ACRYLATE 110 10,000 6,600 350 74-87-3 METHYL CHLORIDE 0.3 30 180 0.38 78-93-3 METHYL ETHYL KETONE 280 10,000 10,000 10,000 108-10-1 METHYL ISOBUTYL KETONE 19 1,900 1,500 84 80-62-6 METHYL METHACRYLATE 190 10,000 10,000 840

AR307614 253-0300-100/ FINAL /Page 27 Table 4 Soil Screening Values (mg/kg) for Protection of Indoor Air - Residential

CAS Regulated Substance Pennsylvania Soil- Pennsylvania Soil- Pennsylvania PA Defaults Number GW MSC Used GW MSC Nonuse Direct Contact Residential Aquifer Aquifer MSC 0-1 5 feet Volatilization to Residential Residential Residential Indoor Air Screen* 25013-15-4 METHYL STYRENE (MIXED ISOMERS) 120 120 1,300 72 1634-04-4 METHYL TERT-BUTYL ETHER (MTBE) 2 20 620 51 91-57-6 METHYLNAPHTHALENE, 2- 2,900 2,900 4,400 NOG 98-83-9 METHYLSTYRENE, ALPHA 120 120 15,000 71 91-20-3 NAPHTHALENE 25 7,500 4,400 64 98-95-3 NITROBENZENE 1.8 1,800 110 130 88-75-5 NITROPHENOL, 2- 29 29,000 1,800 NOC 79^46-9 NITROPROPANE, 2- 0.0016 0.016 0.12 0.034 55-18-5 NITROSODIETHYLAMINE, N- 0.0001 0.001 0.0073 0.081 62-75-9 NITROSODIMETHYLAMINE, N- 0.00031 0.0031 0.023 0.50 924-16-3 NITROSO-DI-N-BUTYLAMINE, N- 0.0033 0.33 3.3 16 11104-28-2 PCB-1221 (AROCLOR) 0.63 0.63 36 NA 85-01-8 PHENANTHRENE 10,000 10,000 66,000 NOC 108-95-2 PHENOL 400 40,000 130,000 NOC 103-65-1 PROPYLBENZENE, N- 290 290 8,800 93 75-56-9 PROPYLENE OXIDE 0.28 0.28 75 34 110-86-1 PYRIDINE 0.97 9.7 67 89 100-42-5 STYRENE 24 2,400 10,000 720+ 630-20-6 TETRACHLOROETHANE, 1,1,1,2- 18 1,800 690 12 79-34-5 TETRACHLOROETHANE, 1,1,2,2- 0:03 3 5.5 1.2 127-18-4 TETRACHLOROETHYLENE (PCE) 0.5 5 340 5.9 108-88-3 TOLUENE 100 10,000 7,600 76 75-25-2 TRIBROMOMETHANE (BROMOFORM) 10 1,000 290 94 76-13-1 TRICHLORO-1 ,2,2-TRIFLUOROETHANE, 1 ,1 ,2- 26,000 53,000 190,000 670+ 120-82-1 TRICHLOROBENZENE, 1,2,4- 27 10,000 2,200 NOC 108-70-3 TRICHLOROBENZENE, 1,3,5- 31 31 1,300 NOC 71-55-6 TRICHLOROETHANE, 1,1,1- 20 200 10,000 120 79-00-5 TRICHLOROETHANE, 1,1,2- 0.5 5 20 1.4 79-01-6 TRICHLOROETHYLENE (TCE) 0.5 5 190 1.3 598-77-6 TRICHLOROPROPANE, 1,1,2- 18 18 1,100 33 96-18-4 TRICHLOROPROPANE, 1,2,3- 4 400 0.16 0.094 96-19-5 TRICHLOROPROPENE, 1,2,3- 18 18 1,100 2.0

253-0300-1007 FINAL /Page 28 AR307615 Table 4 Soil Screening Values (mg/kg) for Protection of Indoor Air - Residential

*PA defaults using SL-SCREEN.XLS version 2.3 03/01; PA Soil parameters; 15 cm to bottom of enclosed space; 150 cm to top of contamination; RL = 10'5, HQ = 1

+ Soil saturation concentration (Csat) - Concentrations above Csat may suggest the need to investigate the potential presence of NAPL.

NA - not available

NOC - Not of concern

Note: Bold face values indicate a COPIAC

253-0300-1OO/ FINAL /Page 29 AR307616 Table 5 Soil Screening Values (mg/kg) for Protection of Indoor Air - Nonresidential (Commercial/Industrial)

CAS Regulated Substance Pennsylvania Pennsylvania Pennsylvania Pennsylvania USEPA-PA USEPA-PA Number Soil-GWMSC Soil-GW MSC Direct Contact Direct Contact Defaults Defaults Used Aquifer Nonuse Aquifer MSC MSC Nonresidential Nonresidential Nonresidential Nonresidential 0-2 feet 2-1 5 feet Volatilization to PELs Nonresidential Nonresidential Indoor Air Volatilization to Screen1 Indoor Air Screen2 83-32-9 ACENAPHTHENE 4,700 4,700 170,000 190,000 NOC NOC 208-96-8 ACENAPHTHYLENE 6,900 18,000 170,000 190,000 NOC NOC 75-07-0 ACETALDEHYDE 5.2 5.2 480 560 47 120,000+ 67-64-1 ACETONE 1,000 10,000 10,000 10,000 110,000+ 110,000+ 75-05-8 ACETONITRILE 35 350 3,200 3,600 630 110,000+ 98-86-2 ACETOPHENONE 1,000 1 ,000 10,000 10,000 NOC NOC 107-02-8 ACROLEIN 0.012 0.12 1.1 1.2 0.059 500 79-06-1 ACRYLAMIDE 0.014 0.014 18 190,000 25 240,000 79-10-7 ACRYLIC ACID 0.58 58 53 60 930 NOC 107-13-1 ACRYLONITRILE 0.27 27 24 28 1.8 10,000+ 107-18-6 ALLYL ALCOHOL 10 1,000 930 1,100 1,600 120,000+ 62-53-3 ANILINE 0.58 0.58 53 60 1,200 20,000+ 120-12-7 ANTHRACENE 350 350 190,000 190,000 NOC NOC 71-43-2 BENZENE 0.5 50 210 240 0.63 380 98-07-7 BENZOTRICHLORIDE 0.048 48 6.1 10,000 0.44 130+ 100-44-7 BENZYL CHLORIDE 0.37 37 33 38 4.0 NOC 92-52-4 BIPHENYL, 1,1- 2,200 3,100 140,000 190,000 NOC NOC 111-44-4 BIS(2-CHLOROETHYL)ETHER 0.055 5.5 5 5.7 7.1 3,100+ 108-60-1 BIS(2-CHLORO- 30 3,000 160 190 28 450+ ISOPROPYL)ETHER 542-88-1 BIS(CHLOROMETHYL)ETHER 0.00029 0.029 0.027 0.031 0.0014 3,300+ 74-97-5 BROMOCHLOROMETHANE 9 9 10,000 10,000 18 3,000+ 75-27-4 BROMODICHLOROMETHANE 10 10 45 51 0.85 1,600+ 74-83-9 BROMOMETHANE 1 100 270 300 1.3 9,600+ 106-99-0 BUTADIENE, 1,3- 0.065 6.5 23 190,000 0.016 28 71-36-3 BUTYL ALCOHOL, N- 200 2,000 10,000 10,000 8,800+ 8,800+ 104-51-8 BUTYLBENZENE, N- 2,600 2,600 10,000 10,000 NOC NOC 135-98-8 BUTYLBENZENE, SEC- 960 960 10,000 10,000 NOC NOC

253-0300-1007 FINAL /Page 30 AR307617 Table 5 Soil Screening Values (mg/kg) for Protection of Indoor Air - Nonresidential (Commercial/Industrial)

CAS Regulated Substance Pennsylvania Pennsylvania Pennsylvania Pennsylvania USEPA-PA USEPA-PA Number Soil-GW MSC Soil-GW MSC Direct Contact Direct Contact Defaults Defaults Used Aquifer Nonuse Aquifer MSC MSC Nonresidential Nonresidential Nonresidential Nonresidential 0-2 feet 2-1 5 feet Volatilization to PELs Nonresidential Nonresidential Indoor Air Volatilization to Screen1 Indoor Air Screen2 98-06-6 BUTYLBENZENE, TERT- 740 740 10,000 10,000 NOG NOC 75-15-0 CARBON DISULFIDE 410 410 10,000 10,000 66 1,900+ 56-23-5 CARBON TETRACHLORIDE 0.5 5 110 120 0.12 440+ 75-68-3 CHLORO-1.1-DIFLUOROETHANE, 29,000 29,000 190,000 190,000 400+ 400+ 1- 107-05-1 CHLORO-1-PROPENE, 3- (ALLYL 0.58 58 53 61 0.071 150 CHLORIDE) 108-90-7 CHLOROBENZENE 10 1,000 10,000 10,000 13 300+ 109-69-3 CHLOROBUTANE, 1- 6,400 6,400 10,000 10,000 460 1,100+ 124-48-1 CHLORODIBROMOMETHANE 10 1,000 61 70 2.2 1,300+ 75-45-6 CHLORODIFLUOROMETHANE 10 10 190,000 190,000 1,000+ 1,000+ 75-00-3 CHLOROETHANE 90 9,000 10,000 10,000 1.8 1,300+ 67-66-3 CHLOROFORM 10 100 17 19 0.074 2,100+ 91-58-7 CHLORONAPHTHALENE, 2- 18,000 18,000 190,000 190,000 NOC NOC 95-57-8 CHLOROPHENOL, 2- 4.4 4.4 920 1,100 270 27,000+ 126-99-8 CHLOROPRENE 4.1 410 370 430 0.21 500+ 75-29-6 CHLOROPROPANE, 2- 58 58 5,400 6,100 14 2,400+ 95-49-8 CHLOROTOLUENE, O- 20 20 10,000 10,000 200 850+ 1319-77-3 CRESOL(S) 51 . 5,100 10,000 10,000 NOC NOC 95-48-7 CRESOL, O- (METHYLPHENOL, 2-) 510 10,000 10,000 10,000 NOC NOC 4170-30-3 CROTONALDEHYDE 0.034 3.4 42 10,000 1.7 23,000+ 123-73-9 CROTONALDEHYDE, TRANS- 0.034 3.4 42 10,000 1.2 20,000+ 98-82-8 CUMENE 1,600 10,000 10,000 10,000 360+ 360+ 108-94-1 CYCLOHEXANONE 10,000 10,000 10,000 10,000 10,000+ 10,000+ 96-12-8 DIBROMO-3-CHLOROPROPANE, 0.02 2 11 12 3.2 110 1,2- 106-93-4 DIBROMOETHANE, 1,2- 0.005 0.5 0.93 8.6 0.29 1,000+ (ETHYLENE DIBROMIDE)

AR307618 253-0300-1OO/ FINAL /Page 31 Table 5 Soil Screening Values (mg/kg) for Protection of Indoor Air - Nonresidential (Commercial/Industrial)

CAS Regulated Substance Pennsylvania Pennsylvania Pennsylvania Pennsylvania USEPA-PA USEPA-PA Number Soil-GW MSC Soil-GW MSC Direct Contact Direct Contact Defaults Defaults Used Aquifer Nonuse Aquifer MSC MSC Nonresidential Nonresidential Nonresidential Nonresidential 0-2 feet 2-1 5 feet Volatilization to PELs Nonresidential Nonresidential Indoor Air Volatilization to Screen1 Indoor Air Screen2 74-95-3 DIBROMOMETHANE 20 2,000 1,900 2,100 66 4,400+ 764-41-0 DICHLORO-2-BUTENE, 1,4- 0.0069 0.0069 190,000 190,000 0.0033 490+ 95-50-1 DICHLOROBENZENE, 1,2- 60 6,000 10,000 10,000 150+ 150+ 541-73-1 DICHLOROBENZENE, 1,3- 61 6,100 10,000 10,000 NA NA 106-46-7 DICHLOROBENZENE, 1,4- 10 1,000 3,300 190,000 13 NOC 75-71-8 DICHLORODIFLUOROMETHANE 100 10,000 10,000 10,000 2.6 480+ (FREON 12) 75-34-3 DICHLOROETHANE, 1,1- 11 110 1,000 1,200 2.7 1,200+ 107-06-2 DICHLOROETHANE, 1,2- 0.5 5 63 73 0.83 1,700+ 75-35-4 DICHLOROETHYLENE, 1,1- 0.7 7 33 38 7.6 790+ 156-59-2 DICHLOROETHYLENE, CIS-1,2- 7 70 1,900 2,100 7.6 840+ 156-60-5 DICHLOROETHYLENE, TRANS-1,2- 10 100 3,700 4,300 6.4 1,500+ 75-09-2 DICHLOROMETHANE 0.5 50 3,500 4,000 14 3,100+ (METHYLENE CHLORIDE) 78-87-5 DICHLOROPROPANE, 1,2- 0.5 5 160 180 0.88 630+ 542-75-6 DICHLOROPROPENE, 1,3- 2.6 260 410 470 0.34 550+ 75-99-0 DICHLOROPROPIONICACID, 2,2- 20 2,000 5,500 6,300 130,000+ 130,000+ (DALAPON) 77-73-6 DICYCLOPENTADIENE 0.26 0.26 84,000 190,000 0.21 NOC 121-69-7 DIMETHYLANILINE, N,N- 20 2,000 5,600 10,000 340 670+ 123-91-1 DIOXANE, 1,4- 2.4 24 210 240 340 130,000+ 106-89-8 EPICHLOROHYDRIN, 0.58 58 53 60 25 NOC 110-80-5 ETHOXYETHANOL, 2- (EGEE) 120 10,000 10,000 10,000 140,000+ 140,000+ 141-78-6 ETHYL ACETATE 1,800 10,000 10,000 10,000 21,000+ 21,000+ 140-88-5 ETHYL ACRYLATE 1.3 130 120 140 9.4 5,800+ 100-41-4 ETHYL BENZENE 70 7,000 10,000 10,000 9.5 110+ 759-94-4 ETHYL 260 260 10,000 10,000 260+ 260+ DIPROPYLTHIOCARBAMATE, S- (EPTC)

AR307619 253-0300-1007 FINAL /Page 32 Table 5 Soil Screening Values (mg/kg) for Protection of Indoor Air - Nonresidential (Commercial/Industrial)

CAS Regulated Substance Pennsylvania Pennsylvania Pennsylvania Pennsylvania USEPA-PA USEPA-PA Number Soil-GW MSC Soil-GW MSC Direct Contact Direct Contact Defaults Defaults Used Aquifer Nonuse Aquifer MSC MSC Nonresidential Nonresidential Nonresidential Nonresidential 0-2 feet 2-1 5 feet Volatilization to PELs Nonresidential Nonresidential Indoor Air Volatilization to Screen1 Indoor Air Screen2 60-29-7 ETHYL ETHER 410 410 10,000 10,000 540 17,000+ 97-63-2 ETHYL METHACRYLATE 180 180 190,000 190,000 380 770+ 107-21-1 ETHYLENE GLYCOL 1,400 10,000 10,000 10,000 120,000+ 120,000+ 86-73-7 FLUORENE 3,800 3,800 110,000 190,000 NOC NOC 75-69-4 FLUOROTRICHLOROMETHANE 200 10,000 10,000 10,000 13 660+ (FREON 11) 50-00-0 FORMALDEHYDE 100 10,000 130 150 710 6,600+ 64-18-6 FORMIC ACID 4,100 10,000 10,000 10,000 110,000+ 110,000+ 110-00-9 FURAN 2 200 2,800 10,000 0.91 4,400+ 98-01-1 FURFURAL 29 29 2,600 3,000 7,500 12,000+ 110-54-3 HEXANE 1,100 1,100 10,000 10,000 4.1 110+ 302-01-2 HYDRAZINE/HYDRAZINE SULFATE 0.0038 0.038 0.34 0.39 1.8 110,000+ 78-83-1 ISOBUTYL ALCOHOL 610 10,000 . 10,000 10,000 21,000+ 21,000+ 126-98-7 METHACRYLONITRILE 0.41 0.41 37 43 1.8 4200+ 67-56-1 METHANOL 1,000 10,000 10,000 10,000 120,000+ 120,000+ 109-86-4 METHOXYETHANOL, 2- 10 10 1,100 1,200 12,000 110,000+ 79-20-9 METHYL ACETATE 10,000 10,000 10,000 10,000 19,000 45,000+ 96-33-3 METHYL ACRYLATE 310 10,000 10,000 10,000 480 13,000+ 74-87-3 METHYL CHLORIDE 0.3 30 920 1,000 0.64 890+ 78-93-3 METHYL ETHYL KETONE 580 10,000 10,000 10,000 14,000 53,000+ 108-10-1 METHYL ISOBUTYL KETONE 41 4,100 4,300 4,900 120 3,000+ 80-62-6 METHYL METHACRYLATE 410 10,000 10,000 10,000 1,200 2,100+ 25013-15- METHYL STYRENE (MIXED 340 340 17,000 190,000 100 500+ 4 ISOMERS) 1634-04-4 METHYL TERT-BUTYL ETHER 2 20 3,200 3,700 86 6,400+ (MTBEL 91-57-6 METHYLNAPHTHALENE, 2- 8.000 8,000 10,000 10,000 NOC NOC 98-83-9 METHYLSTYRENE, ALPHA 250 250 190,000 190,000 99 990+

253-0300-1007 FINAL /Page 33 AR307620 Tables Soil Screening Values (mg/kg) for Protection of Indoor Air - Nonresidential (Commercial/Industrial)

CAS Regulated Substance Pennsylvania Pennsylvania Pennsylvania Pennsylvania USEPA-PA USEPA-PA Number Soil-GW MSC Soil-GW MSC Direct Contact Direct Contact Defaults Defaults Used Aquifer Nonuse Aquifer MSC MSC Nonresidential Nonresidential Nonresidential Nonresidential 0-2 feet 2-1 5 feet Volatilization to PELs Nonresidential Nonresidential Indoor Air Volatilization to Screen1 Indoor Air Screen2 91-20-3 NAPHTHALENE 25 7,500 56,000 190,000 NOC NOC 98-95-3 NITROBENZENE 5.1 5,100 1,400 10,000 190 870+ 88-75-5 NITROPHENOL, 2- 82 82,000 22,000 190,000 NOC NOC 79-46-9 NITROPROPANE, 2- 0.0068 0.068 0.61 0.7 0.056 2,700+ 55-18-5 NITROSODIETHYLAMINE, N- 0.00043 0.0043 0.038 0.044 . 0.14 16000+ 62-75-9 NITROSODIMETHYLAMINE, N- 0.0013 0.013 0.12 0.13 0.83 130,000+ 924-16-3 NITROSO-DI-N-BUTYLAMINE, N- 0.014 1.4 15 10,000 27 1 ,500+ 11104-28- PCB-1221 (AROCLOR) 2.5 2.5 160 10,000 NA NA 2 85-01-8 PHENANTHRENE 10,000 10,000 190,000 190,000 NOC NOC 108-95-2 PHENOL 400 40,000 190,000 190,000 NOC NOC 103-65-1 PROPYLBENZENE, N- 780 780 10,000 10,000 100+ TOO+ 75-56-9 PROPYLENE OXIDE 1.1 1.1 330 510 57 70,000+ 110-86-1 PYRIDINE 2 20 190 210 120 110,000+ 100-42-5 STYRENE 24 2400 10,000 10,000 720+ 720+ 630-20-6 TETRACHLOROETHANE, 1,1,1,2- 18 1,800 3,100 190,000 20 2,800+ 79-34-5 TETRACHLOROETHANE, 1,1,2,2- 0.03 3 28 33 2.0 880+ 127-18-4 TETRACHLOROETHYLENE (PCE) 0.5 5 1,500 3,300 10.0 140+ 108-88-3 TOLUENE 100 1,0000 10,000 10,000 110 240+ 75-25-2 TRIBROMOMETHANE 10 1,000 1,500 1,700 160 1,300+ (BROMOFORM) 76-13-1 TRICHLORO-1,2,2- 53,000 53,000 190,000 190,000 670+ 670+ TRIFLUOROETHANE, 1,1,2- 120-82-1 TRICHLOROBENZENE, 1,2,4- 27 10,000 10,000 10,000 NOC NOC 108-70-3 TRICHLOROBENZENE, 1,3,5- 31 31 17,000 190,000 NOC NOC 71-55-6 TRICHLOROETHANE, 1,1,1- . 20 200 10,000 10,000 170 580+ 79-00-5 TRICHLOROETHANE, 1,1,2- 0.5 5 100 120 2.4 1,300+ 79-01-6 TRICHLOROETHYLENE (TCE) 0.5 5 970 1,100 2.2 390+

253-0300-100/ FINAL /Page 34 AR307621 Table 5 Soil Screening Values (mg/kg) for Protection of Indoor Air - Nonresidential (Commercial/Industrial)

PA defaults using USEPA J&E Version 2.3; 03/01 , Nonresidential receptor, RL = 10 '5, HQ = 1 2PA defaults using USEPA J&E Version 2.3; 03/01, Nonresidential receptor, PEL as endpoint; Use this OSHA-derived screen when OSHA regulations are fully implement ed and documented inside a workplace building

+ Soil saturation concentration (Csat) - Concentrations above Csat may suggest the need to investigate the potential presence of NAPL.

NA - Not available

NOC - Not of concern

Note: Bold face values indicate a COPIAC

253-0300-1007 FINAL /Page 35 AR307622 TABLE 6

SAMPLING INDOOR AIR AND SOIL GAS

There are significant difficulties with sampling indoor air and soil gas. Therefore, it is beyond the scope of this document to fully define processes for sampling these media. The intent of this table is to identify a few key issues/considerations for each area and provide references that could serve as protocols or be useful in addressing these key issues.

Indoor air sampling Indoor air sampling provides the most direct measure of whether there is (or is not) an indoor air quality (IAQ) concern. However, it is recognized that there can be significant ambient (general outdoor) and indoor (from consumer products) sources that can make it difficult to definitively conclude that the source of the IAQ concern is actually from a contaminated site. Indeed, particularly in urban areas, ambient sources may be well above the calculated "unacceptable" risk levels and indoor sources from use of consumer products are sometimes much higher than outdoor sources. Further, IAQ is subject to building conditions and spatial and temporal variability. Sampling to address vapor intrusion should be designed to identify incremental exposures. Therefore, background concentrations should be characterized and subtracted from the indoor air concentrations to limit the assessment to only those vapors that may be attributable to subsurface vapor sources. This is typically very challenging and may require an extensive monitoring program (USEPA, 2001). In addition, the sampling of subslab foundation air and ambient (outdoor) air in conjunction with indoor air is intended to distinguish the exposures that originate from the subsurface contaminant vapor intrusion from those due to background sources. Subslab vapor is defined as the soil gas in contact with the building envelope immediately beneath or within the sub-floor construction materials. Subslab samples are recommended to be, but do not need to be, collected via holes through the flooring as close to the center of the floor space as possible (USEPA, 2003). Using the EPA database (Shah and Heyerdahl, 1988, EPA/600/3-88/010a) and 50% of the mean indoor air values, Table 3 footnotes and identifies those compounds as having potentially higher indoor air background concentrations than the residential risk-based target levels. A plan should be developed to assist in addressing data quality objectives before beginning sampling. In a typical sampling plan, multiple samples may be collected over a target time period (e.g., 2 hours to 3 weeks) to determine indoor air concentrations. It is recommended that samples be collected using either a pumped air collection method with adsorbent media tubes or evacuated canisters. It should be noted that samples collected under applied pressure do not produce data that are reflective of steady-state subslab conditions and are not useful for accurate determination of existing soil gas concentrations. Such samples may be used as general indicators (worse than worst case) of the magnitude of the volatile substances in the airborne component subsurface soil

253-0300-100/ FINAL /Page 36 AR307623 since the sampling process may actually force transfer of soil-associated components to soil air at a rate greater than naturally occurs. Also, samples collected in such a manner should be used with caution or not at all be used in a risk assessment since they will overpredict exposure point concentration. For longer term duration (e.g., three weeks), passive diffusion badges suitable for the volatile constituents targeted in the study may be used. Due to time constraints and cost, at least 2 quarterly samples (spring and winter to account for seasonal variations) must be collected during times when reasonable worst-case conditions exist (i.e. nighttime). To meet minimum data quality, a trip blank and at least one duplicate sample will be needed with each data set submitted for laboratory analysis. Analysis using laboratory equipment (e.g., GC - GC/MS) will be needed to attain the required specificity and sensitivity. The Massachusetts Department of Environmental Protection has developed a comprehensive guide to address sampling IAQ. This document suggests the following steps in designing and implementing a sampling plan for IAQ. * Define Study Objective * Identify Chemicals of Concern * Identify Required Sampling Duration * Choose Sampling Method * Check if Adequate Limit of Detection * Define QA/QC Indicators for Sampling/Analysis * Do Pre-Sampling Investigation * Establish Appropriate Sampling Conditions and Conduct Sampling 4 Analyze Samples * Evaluate Data and Calculate Health Risks The guide is available for free download at: http://www.state.ma.us/dep/bwsc/files/sac/sacQ402.htm Under Indoor Air Sampling and Evaluation Guide

Useful guides are available from the New Jersey Department of Environmental Protection (NJDEP, 1999) and New York Department of Health (NY DOH, 2001).

Soil gas sampling Soil gas sampling can be used both as an alternative to sampling indoor air and to better determine the source term for the Johnson and Ettinger model. The mobility of volatile chemicals in soil primarily depends on soil porosity, i.e., the most significant determining factor is available connected air-filled porosity. Thus, even small changes in soil lithology can result in changes in vapor transport. This presents a major difficulty in getting representative vapor concentration. In addition, environmental conditions that can fluctuate significantly with time (such as seasonal variation in moisture content, time since the last rainfall and atmospheric pressure) are also important determinants of vapor concentrations. This means that multiple

253-0300-1007 FINAL /Page 37 AR307624 concentration measurement events are typically needed to develop a representative soil vapor concentration. The typical method to collect soil gas is with narrow diameter probes that are installed in the ground for multiple sampling events. The American Petroleum Institute (API, 1998) is developing a resource on the issue. Some of the recommendations include: * sampling devices should intersect small vertical sections of the vadose zone * sampling devices should be sealed from short-circuiting from the surface * probes may be installed in nested groups at various elevations » at least 2 quarterly sample's (spring & winter to account for seasonal variations) must be collected during times when reasonable worst-case conditions exist. * the soil vapor sampling point should be purged of stagnant air before the samples are acquired * sampling equipment is appropriately contaminant-free * samples to be sent to a laboratory for analysis should be collected in SUMMA canisters * Tedlar bags may be used if holding times are adhered to and the constituents of concern do not interact with the bag (see Appendix A notes). » Other validated passive sampling methods may be acceptable. In addition to concentrations of chemicals of concern, concentrations of oxygen and carbon dioxide are often measured to develop the information needed to support biodegradation demonstrations. So, field analyzers may be used for some parameters such as oxygen and carbon dioxide.

References: API 1998. Assessing the Significance of Subsurface Contaminant Vapor Migration to Enclosed Spaces, Site-Specific Alternatives to Generic Estimates. Health and Environmental Sciences Department, Publication Number 4674. Washington, D.C. Massachusetts Department of Environmental Protection - Office of Research and Standards. Indoor Air Sampling and Evaluation Guide. Draft Version. February 1, 2001. http:/ /www.state.ma.us/dep/new.htm National Ambient Volatile Organic Compounds (VOCs) Database Update, Shah and Heyerdahl, 1988, EPA/600/3-88/010a.

New Jersey Department of Environmental Protection. 1999. Indoor Air Sampling Guide for Volatile Organic Chemicals. New York Department of Health (2001): Sampling Indoor Air and Analysis Guidance, August. USEPA. 1992. Air/Superfund National technical Guidance Study Series. Assessing Potential Indoor Air Impacts from Superfund Sites. EPA-451/R-92-002 USEPA. 2001. Supplemental guidance for evaluating the vapor intrusion to indoor air pathway. Partial response to question 3 of 02/05/99 RCRA Corrective Action Environmental Indicator RCRIS Code (CA725). Draft for comment. 10/23/01.

253-0300-1OO/ FINAL /Page 38 AR307625 USEPA. 2003. EPA Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils.

253-0300-1007 FINAL /Page 39 AR307626 Table 7

Inhalation of chemicals volatilized into indoor air from soil or groundwater (Development of MSCs for Indoor Air - MSCiAo.)

Non-carcinogens:

3 MSC(mg/m ) = THQ x RfDi x BW x Atnr x 365 davs/vr Abs x ET x EF x ED x IR

Carcinogens:

MSC(mg/m3) = TR x ATV x 365days/yr CSFi x Abs x ET x EF x IF

Recommended Exposure Assvunptions Residential Nonresidential Term Non Carcinogens2 (Onsite carcinogens1 Worker) THQ Target Hazard Quotient 1 N/A 1 RfDi Inhalation Reference Chemical- N/A Chemical- Dose (mg/kg-day) specific specific BW Body Weight (kg) 70 N/A 70 Atnc Averaging Time for 30 N/A 25 noncarcinogens (yr) Abs Absorption (unitless) * * * ET Exposure Time (hr/day) 24 24 8 EF Exposure Frequency 350 350 250 (days/yr) ED Exposure Duration (yr) 30 N/A 25 IR Inhalation Rate (m3/hr) 0.625 N/A 1.25 TR Target Risk HQ = 1 1 X 10-5 1 x 10-s CSFj Inhalation Cancer Slope N/A Chemical^ Chemical- Factor (mg/kg-day)-1 specific specific ATC Averaging Time for N/A 70 70 carcinogens (yr) 3 3 IFadj Inhalation Factor < > (m - N/A 0.4 0.4 yr/kg-hr)

253-0300-1007 FINAL /Page 40 AR307627 Notes: Modified from USEPA (1995). N/A = not applicable. 1 Residential exposure to noncarcinogens is based on adult exposure, consistent with USEPA (1991) 2 Residential exposure to carcinogens is based on combined childhood and adult exposure. 3 The inhalation factor for the residential scenario is calculated using the equation IFadj = EDcXlRc/BWc + EDaxIRa/BWa, where EDC= 6 yr. IRc = O.Sn^/hr, BWC = 15 kg,EDa = 24yr. 3 IRa = 0.625 m /hr and BWa = 70 kg. The inhalation factor for the nonresidential scenario is calculated using the equation IFadj = EDxIR/BW, where ED = 25 yr, IR = 1.25 m3/hr and BW = 70 kg. * Inhalation absorption factors will be provided at a later date. Default = 1. In cases where the inhalation RfD or CSF is based on absorbed dose, this factor to be provided can be applied in the exposure algorithm.

253-0300-1007 FINAL /Page 41 AR307628 TABLE 8 Summary of Selected PA Input Parameters EPA's Johnson and Ettinger Model (Version 2.3; 03/01) Soil Model Groundwater Model Parameter (SL-SCREEN) (GW-SCREEN) Depth below grade to bottom of enclosed space 15 15 floor (15 or 200 cm)

Depth below grade to top of contamination (cm) 150 NA

Depth below grade to water table (cm) NA 150

SCS soil type directly above water table NA SCL

Average soil temperature (C) 11.1 11.1

Vadose zone SCS soil type SCL SCL

Vadose zone soil dry bulk density (g/cmA3)SCS 1.8 1.8 soil type

Vadose zone soil total porosity (cmA3/cmA3) 0.32 0.34

Vadose zone soil water-filled porosity 0.2 0.2 frm'Wrm'Vtt Vadose zone air-filled porosity (cmA3/cmA3), 0.12 0.14 input on "Intercalc" sheet

Vadose Zone soil organic carbon fraction 0.0025 NA fiiniflpss^ Target risk for carcinogens l.OOE-05 l.OOE-05

Target hazard quotient for noncarcinogens 1 1

Averaging time for carcinogens (yrs) 70 70

Averaging time for noncarcinogens (yrs) 30,25 30,25 Residential, nonresidential Exposure duration (yrs) 30,25 30,25 Residential, nonresidential Exposure frequency (days/yr) 350, 250 350, 250 Residential, nonresidential

253-0300-1007 FINAL /Page 42 AR307629 Table 9 Chemlcal/Physlcal/Toxlcologlcal Properties

f Koc Da ; Dw S '. H H j T : T T ! AHv.b : .„_ 1 Bf_ State 1 R B 1 3 (S L G URF ' ! 1 - - |83-32-9 ACENAPHTHENE 4900| 4.21E-02 7.69E-06J 3.80E+OOJ 6.36E-03I i.55E^04| 25! 550.54 803.15! 12"155| O.OE+00, 2.1E^01_L S iX 208-96-8 ACENAPHTHYLENE 4500 4.39E-02] 7.53E-06! 1.61E+01J 5.13E-03 1.25E-04^ 25 1 553.2 792J 12167J O.OE+Ob[ 2.1E-01J S [ J _, '75-07-0 _,ACETALDEHYDE 4Vlj 1.24E-01j 1.41E-bs[_ 1.00E+06J 2.73E-03 6.67E-05 25 ' 293.2 466|. 6150! 2.2"E^06; 9.1E-031 L ! I 1 67-64-1 ACETONE 0.31 i 1.24E-01, 1.i4E-05| 1000000! 1.59E-03 3.88E-05 25 1 329.20 508.101 6,955! O.OE+00, 3.1E+01! L i I 75-05-8 IACETONITRILE 0.5' T.28E^)ii 1.66E-05| i.bbE+06! T.41E-03 3.45E-05 25] 354.8 1 545.5f 7500! O.OE+OOi 6.0E-b2; L ~] T~

,98-86-2 ACETOPHENONE 170| 6.00E-02 8.73E-06J. 5.50E+03 4.26E-04 1.04E-05+ 25j 475 709.5: 10358, O.OE+OQi 3.5E-01I S ] jX 1 107-02-8 JACROLEIN b.56 1 i.b5E-biL.i.22E-b5i2.b8E+b5l s.'obE-bs 1.22E-04 25! 326 506 1 6770, O.OE+00' 2.0E-05J L i ! 179-06-1 - JACRYLAMIDE 25 9.70E-02[ 1.b6E-05^.15E+b6i 4."lOE-08 i.bbE"-i9 25, 378.75! 818.4! 123631 1.3E-03i 7.0E"-04! S ' ]X !79-ia7 (ACRYLIC ACID 29 9.80E-02J 1.06&O5 i.OOE+06! 1.52E-05 3.70E-07 25j 414] 616.57| HOOOi O.OE+00: 1.0E-03; S |

JJ07-13-1 lACRYLbNITRlLE I . 111 1.22E-01 1.'34E"-05j 73500! 4.47E-03 1.09E-04 25! 350.45 536! 7795i 6.8E^05U 2.bE^03j2 Li ! 1 107-1 W? JALLYL ALCOHOL 1 3.2 1.14E-01 1.14E-05: 1.00E+061 io'SE^M 4.99E-061" 25; 370.23 545. 1j 9550f O.OE+OOi 1.8E-02J L [_ |X 162-53-3 1 ANILINE 190J 7.b6E-b2| 8.3bi^06r3.38E+b4l 8.28E-05 2.62"E^06 25. 457.32 698.8i ibobbi 1.6E-06! I.OE^OSr L 1 j 1 1 20-"1 2-7 | ANTHRACENE 210001 3.24E-02I 7.74E^I6 6.6bE-02J 2.67E-b3 6.51E-b5j 25; 615.18 873f 13121! O.OE+OOI 1.1E+Oo1 S f JX .71-43-2" IBENZENE " 58| 8.86E^02[ 9.80E^06j 178b.5J 2.28E-bi 5.56E-03] 25; 353.24i 562.16! 7.342J 7.7E-06J 6.0E-03 L I } 98-07-7 IBENZOTRICHLORIDE 920| 2.75E-02 7.77E-06, 5.30E+bli 1.b7E-02 2.60E-04 25 [ 493.8 j 867 f 10288| 3.7E-03| O.OE+00 L f X [ lbb-44-7 [BENZYL CHLORIDE 190" 7.50E-02 7.80E-06 4".93E+o"2l 1.69E-02 4.12E-04| 25, 452.15 775.2J 10138]" 4.9E"-b5! O.OE+00 S _j ! ;92-52-4"~ jBIPHENYL, 1,1- 1700; 4.04E-b2[ 8.15E-06 7.20E+00; 1.26E-02 3.08E^4i 25 529.2 773 i 10900I O.bE+bb^ 1.8E-01 S j IX • 1 1 1-44-4 lBIS(2-CHLbRbETHYL)ETHER 76i 6.92E-02 7.53E-66['1.02E+04; 7.38E-04 1.80E-b5 25! 451.15 659.79^ 10803, 3.3E-04: O.OE+OOI L i I i 1 08-60-1 j¥lS(2-CHLORO-ISbPRbPYLJETHER 62] 3.50E-b2i.7.36E^)6! 1.70E+03J 4.63E-03 i.V3E-04 20; 46b.2| 6601 . 9721; i.OE-bS, i.4E-01i L i [X J542-88-1"" " BIS(CHLOROMETHYL)ETHER "16] 5.73"E^b2L "9.38E-06'L" 2.20E+04L 8.45E-03 2.b6E-b4" 25"" 377.2J" 579J """ 7981 i" 6.2E^02i "O-OE+OO! L" ~\ " " j " J ! 74-97-5 BROMOCHLOROMETHANE 27j 4.74E-02i 1.00^05 1.67E+04J 5.99E-02 1.46E-03 25 , 341 543 i . 7170! O.OE+00! 3.5E-02J L ' IX ; 75-27-4 IBROMODICHLOROMETHANE 93! 2.98E-02 1.06E-05 4.5bE+03| 6.56E-02 1.60E-03 25 363.15 [ 585.85; 7800I 3.7E^05[ 7.0E-O2I L ! J.X •74-83-9 IBROMOMETHANE 170! 7.28E-02J 1.21E-051 1.75E+041 2.56E-01 6.24E-03J '25 1 276.71 467i 57141 O.OE+OOi 4.9E^3| G _J 1 [106-99-0 '_J BUTADIENE, 1.3- 120L 2.49E-01J 1.08E-051 7.35E+02I 3.02E+OOJ 7.36E-02J 25 268.74 425T 5370; S.IE-bs^ 2.0E-03I G J_ j 171 -36-3 1 BUTYL ALCOHOL, N- 3.2 L 8.00E-02J 9.30E-06! 7.40E+04; 3.61E-04 8.81E-06; 25 i 390.88 563.05 10346J O.OE+00, 3.5E-01 L T ' [X ' 1104-51^8 IBUTYLBENZENE. N- 2500! 5.19E-02! 8.10E-06J 1.50E+01 6.52E-01 i.59E-02 25! 456.46J 660.5i 9380J b.OE+ob: 1.4E-OH S [ [X i 135-98-8 ,BUTYLBENZENE, SEC- j 890j 6.27E-02| 7.29E-061 1.70E+01 7.22E-01 1.76E-02 25i 446.5! 664] 9070! b.OE+00| 1.4E-Ol[ S j [X i 98-06-6 IBUTYLBENZENE, TERT- 680i 6.27E-02J 7.29E-06; 3.00E+01 i 5.41E-01 r 1.32Ei2 25; 442.3 660 1 8990 1 O.OE+00! 1.4E-01! Si X !75-i5-q_ [CARBON bisuLFiDE _,^ 300 1.04E-01! 1.00E-05! 2.10E+03^ 1.24E+001 3.02E-02J 25, 319J 552[ 6391] O.OE+00; 7.0E-01 L^ | [ i 56-23-5 "" "i CARBON TETRACHLbRIDE~"~ ~ "l60r7.86E-02i 8.80E-b6]" 795^ l".25E+OOi 3.05E-b2i" 25 "349.90] """556.60)" ""7,127i"~1.5E-05r~2.b&03j C~'j i

. 75-68-3 ! CHLORO-1 , 1 -blFLUOROETHANE, 1 - 221 8.bOE'-02 1.b5E^)5i_i.40E+b3; 2.41E+00! 5.88E-b2i 22! 263.4 • 410.29; 5121 i" O.bE+00; 5.0E+bi'L Li 1 ! 1 07-05-1 ! CHLORO-1 -PROPENE, 3- (ALLYL 48T 1.17E-01 1.08E-05J 3.30E+03' 4.51E-01 1.10E-02 25| 318.31 514! 6475! 6.0E-06: 1.0E-03! Li i ! ; ! 1 : 1 [CHLORIDE) i 1 " 1 : i . , ' • ; ' 1 . _ ... ,108-90-7 JCHLOROBENZENE 200- 7.30E-02| 8.70E-b"6] 490i 1.52E-01J 3.7iE-b3 25^ 404.87 632.40; 8,41 0| O.OE+OOI 1.8E-02 L | [109-69-3 ICHLOROBUTANE, 1- ~" 580! 1.10E-bli i.ibE-05] 6.80E+02T 6.85E-01 1.67E-02 25i 351.6[ 542J 7170] O.OE+OOi 1.4E+00; L IX 1124-48-1 jCHLORODIBRbMbMETHANE i 83, 1.96E-02| 1.05E-05i 4200' 3.21E-02 7.836^ 25i 416.141 678.20] 5.9661 2.7E"-b5i 7.6E-02"[ L [ JX J75-45-6 ICHLORODIFLUOROMETHANE 59| 8.30E-02! 1.28E-05 2.90E+03! 1.66E+00 4.06E^02 22 i 232.4 369.3! 4826' O.OE+bb; 4.9E+01! G | ! [75-00-3 JCHLOROETHANE 42[2.71E-01 l".15E-b5J 5.70E+63i 4.55E-bi i.11E-02 24j 286.2J 460.4[ 5900]^ 8.3E^b7i 1.0E+01: L X \ J f67~-66-~3 " ^CHLOROFORM ~ 56j i.04E-01 i.OOE-bsl 8000' 1.50E-01 , 3.66E-03 25 j 334".32 536.40! 6,988i 2.3E-05, 3.2E-04! L I ' [91-58-7 ICHLbRbNAPHfHALENE, 2- 8"50b: 3.47E-b"2 8.79"£b6J 1.17E+bii 1.31E-02] 3.20E-JD4 25l 5291 779, 1143T! O.OE+bbi "2.8'E-bii Si [X l 195-57-8 iCHLOROPHENOL, 2- 400; 5.01 E-02 ?.46E-b6'L'2.4bE+b4 i.60E-02j 3.90E44 25,' 447.53'j 6751 95721 b.OE+Obi 1.8E"-02[ L" i JX [126-99-8 [CHLOROPRENE 50 1.04E-01 LOOEi'S i.74E+b3; 1.31E+00 3.20E-02 25: 333J 485.4i 6526: O.OE+OOi 7.0E-03L L J [ _,

253-0300-1OO/ FINAL /Page 43 AR307630 Table 9 Chemlcal/Physical/Toxlcological Propertie

1 AHv.unv,ub | i ipp • Off* [State»swi«* ]; ; Koc Da Dw S H H TB 2 2 TB : (cm'/g) (cm /s) (cm /s) (mg/L) unitless (atm-m'/mol) °c °K ! ftiSfv'' <«Sm>) |'S|'G! URF<"> RtC<"> j i L 1 I. L j J 260[ 1-16E-01! 1.01E-05J 3.1pg+03 1.75E-02: 25 i . O.OE+O... ^. O j. l.pE-Ol,. J L_.. _J ! _" ^...... "I _j l"46E-6i 3.57E-03! 654.3 i 1319-77-3 ]CRESOL(S) 9.30E-06' 2.00E+04! 2.54E-05; 6.19E-07J 25, 470 i IP! 10886: ^.OE+qq; 1.8E-02 it 95-48-7 JCRESOL, Ov(METHYLPHENOL, 2-)j___ 97.11_7.40E-p2j_8:30E-06j ,2.50E+03j _ 4.92E-p5; 1-.?pE4)6 25; 464-19 697.6! "iolooi" o".oE+o6T 417q-30^3_ 5.6! l-03.E^02. j 1.Q2E-05; 1.80E+05 3.97E-04; 9.68^06! 201 375.5; 601.98 -L8.'?61 _§-^E4M|_ _0.0_E+OOi ~ ' -<— -4— T23-73-9 9 J33E-02 j V.56E+05 . 7.95E-04 : ' l'.94E-05T ~25l" 377.7] "601.98 79~67! 5.4E-04] ' 9JM52-8j_ 28 7 2 "jCUMENE "_.„ " _.._ „ "T.-.'".X-" - °P'" .-1P^9 J"7.101-06.! APOE+pl i " 2.29E:qj[" 631 i 108-94-1 CYCLOHEXANONE 66 7.84E-02J 8.62E-p6j 3.65E+04J 9.00E-061 _25: _653 6 2 ! .:! .:L~~ _, 1,2- "l4_p|" 2L12E-q2'i ~7.o'2E-06j 'TopE+p3[' 6.63E-03] 1.47E-04T" 20; 46'9 707 106-93-4" DIBROMOETHANE, 1,2-(ETHYLENE" ""54T2."l7E-02i"l.'l9E4J5i" 41561"' 7.06E-04| 25! 404.7 i 583 8684J 2.2E-04I 2.0E-04J IDIBROMIDE) i L. i DIBROMOMETHANE" " " " 110: 3.18E-02! 8.44E-06i 1.14E+04! 3.37E-02! 8.22E-04| 201 370 i 583 7863 3.49E-qi! " p.OE+Oq[ L^ - _ 429 - 8875 ' " " "..... " " DICHLOROBENZENE, 1,2- 3501 6.90E-02' 7.90E-06! 147t '7.79E-02; 1.9pE-03i "is 705.00 - j_. " ...... "" ...... - plCHLOROBENZENE^1,3- _ i 3601 6.90E-02 IP?I. 1-52E-01; "9230 iDICHLORbBENZENE, 1,4- •" f ' Sio'l ' 7.90E-06! 82.9; 9.96E-02! i DICHLORODIFLUOROMETHANE 360i 5.20E-021 1.05E-05: 2.80E+02I 1.41E+01 3.43E-01| 251 243.3 384.95 4772; O.OE+OO! 1.8E-01 [(FREON12) _ I _.! 52! 7.42E-02 I.OSE-OSi 5000 5.61E-03| 25 j 330.55 523.00 ~6,895[ 1.6E-66i 3.5E-Oi[ ' L 1,2- J 38! 1.04E-01| 9.90E-06 8412 i 4.01 E-02! 9.78E-04J 25l 356.65 _ 7,643] 2.6E-05; 4.9E-03 L 2500! '304.75T 576.05 3 3 5 6 L.1:1 i:P?! . . P.?i .l .7E-qii ^07^4)3; _25i .__J33.65j 544.001 7.192j_p.OE+OpJ 3.5E-02J L IX , TRANS-1 ,2-' 47j 7.p7E-02j 1.19E-p5; 6300] 3.85E-011 " 9.39E4)3j 25; .320.85L ..5.lClpJ_ .6,717| JB.OE+qOJ .7:PE4J2_ L blCHLOROMETHAislE (MEtHYLENE' 16! l"6iE-oT; 1.17E-05! "20000!' %".98E-02'i" 2.19E-03! 25! 313.00' 510.00 6,706| 4.7E-07; 3.0E+00 CHLORIDE) 5 E :' '" "" '"' '1 jplCHLORqPRpPANE. 1,2- L 47; 7._82E-02; 8.73^06; 2700] 1.15E-pi; 2.80E:031 25j 369.521_. J72.ppj .._J,59.°i..:.1iPI:P_ _L.AO lP? _._Jr. | DICHLOROPROPENE, 1, 271 1_.pOE-05i 2JOE+031_jr.26E-p1: 1.-Z.7E02 .25] _38t. 1 8 "'~ " : •. Jl__5 ?-??l__ 7900|_ 4.qE4)6_i r2.0E-02 L_ i _| i'75-99-0 ' 'DICHLOROPROPIONlc'ACID, 2,2- 25; 460.7i6.7l1' ~-67iT~' T6i25i 6T6E+'6o "i.iE-oif" "L ~~r~~ "|x ' ; (DALAPON) DICYCLOPENTADiENE 810; 4.89E-02! 7.76E-06J 4.00E+01J 4.39E-01 5i?JL 2.33E-03I 5.68E-05J 25! 467.3T ! I EPICHLOROHYmN 35 "a60l-02 9.80E4)6r6758E+4' .25E-3i S.MEOSi 2S 38a2 638.4 _25 j "__"lp8.3 [ "__ ™ 5721' ' ' '93681 " bOE+00|2.0E-ol" ! 1.34E-p4| 25|" 35p726J_ " ™523.3| _ '^'_770p j "o.pE+OOj "3.2E+qq[ 'L 1140-885 3l2L^.ZOE.^L^plE4i6i_r50E+p4J' ".1391-02, ...3.39E-q4| 25] _.J73__L 5_52J_ 7950[..J..4E4)5j_..O-OE+OO, L "T 220 "3.23-01': i 25 ! 469.341 rl~—1~ 75994-4 : ETHYL DIPROPYLTHIOCARBAMATE,! 24o"5.50E-52V5.80E-o6i '3~65E+62i 6.52E-04': sos'is! 6881 11775i O.OE+OOi 8.8E-02 I i lx !(EPTC) I 60-29-7 _ ^^ETHYLETHER j_ _68| 7_.40Er02\. 9.30E4)6p6.04E+04! 5.04E-02J 1.23E-03t 25j .307.6J __466.74J: 6380} O.OE+pp!I, _7:OE^\ j L X 97-63-2 25 391/7 ;"579 8260J E+i 'x 1107-21-1 ETHYLENE GLYCOL" 25; 470.49] 718] ^12550] _p.qE+qoi....7,pE+qq!_Li_ |X

253-0300-1007 FINAL /Page 44 AR307631 Table 9 Chemical/Physical/Toxicologlcal Properties

AHv.b • URp State | 1 1 CAS Koc Da Dw S , H' H i TB TB ! Tc RfC : Regulated Substance i ; (S,L,G! URF(x j RfC(x) ! { Number (cm'/g) (cm'la) (cm'/s) j (mg/L) unitless (atm-m'/mol) j °C °K : °K I : i. — i IFLUORENE i 7900 i 3.63E-02 7.88E-06! 1.90E+00, 2.61E-03; 6.37E-05I 25] 570.44 i 870 [ 12666 O.OE+00 1.4E-01 ...._S. I^_ _ ! |75-694 IFLUOROTRICHLOROMETHANE (FREON 130i 8.70~E-62 9.70E-06: 1.09E+03; 3.98E+00: 9.70E-02| 25; 296.9! 471.2 5920; O.OE+00 7.0E-01 i in) ! i f i ; i ; 50-00-0 ; FORMALDEHYDE 3.6, 1.78E-01 1.98E-J05;' 5.50E+04; Y38E-05, 3.37E-07! 25 254.05„.,._; . 408 i 5500; 1.3E-05 9.8E-03j G i i 164-18-6 ; FORMIC ACID 0.54': 7.90E-02 1 .37E-06 j " 1 .OOE+06 6.85E-06 ; 1.67E-07; 25 588 i 5240 ! O.OE+bbj 7.0E+00 ••in — !x ] ""'FURAN " " 130! 1.04E-01 1.22E-65| 1.66E+64"; 2.21 E-01; 5.40E-03, 25 304.61 490.2 6474 j O.OE+00 3.5E-03 — -j-— » - " f X i 98-01-1"" "FURFURAL ." " • 6.3, 8.72E-02 i.04E-05^ 9.10E+04. 1.38E-04, 3.37E-06J 25: 434.9!" 670 L 9826 1 O.OE+00: 5.0E-02 L I 1 i 1 KV54-3 jfiEXANE "" T 3600f 2.00E-01J 7.77E-06| 9.50E+00; 7.38E+01! 1.80E+00! 25; 341. 88j 507.6"i 6896 O.OE+OOi 2.0E-01 i | i- .. J |302-b~i-2 ~ JHYbRAZiNE/HYDRAZiNESULFAfE 0.6653] 4.16E-01 1 1.90E-05! 1.66E+06f 2.49E-05"; 6!b7E-6'7[ 25. "" 386.7!' 653 "' "l07o6f 4.9EX)3. ' "b.OE+00 L i [78-83-1 "| isbBUTYL ALCOHOL "" "L" " "60! 8.60E-02; 9r3"6lE-66'~8.10E+04i 4.01 E^04' 978E-06J 25, 381. 04 j 547.8 1 10050: o.OE+00, 1.1E+00, Li ]X . j : ri26-98-7 :MEfHACRYLONiTR~ILE 2~ij 8.45E-02I 1.06E-05i 2.57E+04] 1.01E-02' 2.47E^b4l 25, 363[ 537.6 1 7595 O.OE+00 7.0E-04 L; 1 ! J67-56"-l" " " jMETHANOL " "V 2.81 1.50E-01 1.64E-05: 1.00E+06; 1.87E-04 4.55E^)6i 25 1" 337.7 ; 512.5 8426| O.OE+00 , 1.8E+00 L [ !x 1109-86-4 |METH"OXYETHANOL, 2- """ j " 1j 1.29E-01 9.57E-66: i.boE+06, 1.35E-05 3.30E-07] 25 397.6 597.6 8966^[ O.OE+66! 2.0E-02, L ! i i 179-20-9"" " "i METHYL ACETATE " " , "30! 1.04E-01 ' 1.66E-05! 2.44E+05, 4.72E-03: 1.15E-041 25, 330.02 506.55 7200 b.OE+bb; 3.5E+00 L i IX : x 1 96-33-3 "(METHYL ACRYLATE "55; 9.76E-02 1 .02E^05 > 5.20E+04' 8.08E-03 1.97E-04J 25, 353.5] 536 7650 1 O.OE+00! 1.1 E-01 L { , r : l i 74-87-3 i METHYL CHLORIDE 6! '1.26E-01 6.50E-06 6.18E+03! 3.62E-01; 8.82E-03| 2' 4[ 249.06] 416.25J 5126r 1.8E-06 1.1E-01 G j_ 4- ; ;78-93-3 I'METHYL ETHYL KETONE 32' 8.08E-02 9.80E-06- 275000 1.91E-03 4.65E-05i 25 352.74! 535.6 7455 O.OE+00 1.0E+00 L i i ,108-10-1" i METHYL ISOBUTYL KETONE , 17: 7.50E-02 7.80E-06": 19550' 1.60E-02; 3.90E-04, 25, 389.6! 575.5 8238( O.OE+00 7.0E-02 L ! j ...j "" [ METHYL METHACRYLATE i ib; 770E-02 SÔE-Oei 1.56E+04, 1.38E-02J 3.37E-64i 25' 373.5J 567 8320J O.OE+bo: 7.0E-bl I _k .L.. _< HsbTsîsT j METHYL STYRENE (MIXED ISOMERS) , 2200 i 5.46E-02 8.08E-06t 8.90E+01, 3.22E-01 i 7.8"6E-63| 20^ 444 [ 654 9843 O.OE+00 ! 3.5E-02 L I i 11634-04-4 j METHYL TERT-BUTYL ETHER (MTBE) j 12[ 1.6'2E-6l, LOSE-bS] 45000, 2.41E-02J 5.87E-64L 25: 328.3 1 497.11 667^3] 2.6E-07i 3.0E+00 L—f- - i [91-57-6 [MET HYLNAPH? HALENE, 2- j 16000! 4.80E-02 7.84E-66; 2.50E+01: ^.iÊ-O^ 5.18E-04[ 25: 514.26F 761 f 11006; b.bE+bo! 3.bE-0"3 S j " 1 j [98-83-9 I'METHYLStYRENE, ALPHA | 6W 2.64E-01 i.iiE-bs;. 5.6bE+b2i i.bsE-b'i: 2.55E-03! 25! 43"8.65T 654 9150! O.OE+OOi 3.5E-02I _._L - i _... i i [91-20-3 [NAPHTHALENE i 950 5.90E-02 7.50E-06: 3.00E+01; 1.98E-02, 4.83E-04' 25; 491.14] 748.4J 10373J O.OE+OOi 3.0E-03 ! i [98-9W " "^NITROBENZENE j 130, 7.60E-02 8.60E-06; 2.00E+03J 9.84E-04: 2.40E"-O"5' 25: 483.95 719 10566| O.OE"+001 2.1E-03I L ! [" i [88-75-5 INITROPHENOL, 2- ! 37? 4.6"9E-62 8.50E-06I 2.10E+031 5.25E-041 1.28E-05I 20, 490. 35 1" 709j 12666, 6.61+66!' 2".8E-02:j S T i 1 79-46-9 jgiTROPROPANE, 2- : 20 1 9.23E-02 1.01E-05; 1.67E+04 4.88E-03 1.19E-04! 25 393.3' 597 8394! 2.7E-031 2.0E-02 L ! ~" 1 -~i l55-"l8-5 iNiTROSODIETHYLAMINE, N- ' " i 26, 6.48E-02"! 9.13E-66I 9.36E+04 1.49E-04; 3.63E-06: 25 i 450. 1| ess! 10087 4.3E-02 O.OE+66^ L I. . | j 62-75-9 ;NITROSODIMETHYLAMINE, N- : 8.5 1.13E-01 1.24E-05J 1. OOE+06 7.46E-05: 1.82E-06! 37; 425! 645 9448 1 1.4E-02: 6.0E+66 1 1 - •- i ' 924-1 6-3 i NITROSO-DI-N-BUTYLAMINE, N- 450, 5.80E-02 9.72E-06a 1.20E+03 5.41 E-04 1.32E-05. 37: 508: 690 11653 i.6E-b3: O.OE+00 L" r •"- [11104-28-2 ;~PCB-i221 (AROCLOR) J_ 1900 5.90E-01 9.35E-03 2.28E-04" 25. 548.15^ i 2.6E-05: O.OE+00 S j i 85-01-8 iPHENANTHRENE 38000 3.30E-02 7.47E-06; 1.10E+00 1.73E-03! 4.23E-05! 25 i 613 869 13296| O.OE+00, 1.1E+00 S. j |X i jYj08-95-2 ! PHENOL . 22 8.20E-02T 9.10E-06]^ 8.43E+04 1.63E-05 3.98E-07r 25: 455.02 1 694.2 109201 O.OE+00. 1.1E+00 S j ix i JPROPYLBENZENE, N- j 720. 6.50E-02 7.80E-06I 5.20E+01, 4.31 E-01 [ 1.05E-021 25 432.39] 638.35 9140J O.OE+00 1.4E-01 L i ;x 175-56-9 iPROPYLENE OXIDE I" 25| 1.04E-01 1.00E-05J 4.05E+05. 2.85E-03j 6.96E-05! 25 308; 482.2 6450; 3.7E-06. 3.0E-02 L j ! i r 1110-86-1 iPYRIDINE ! 0.0066! 9.10E-02 7.60E-06J i.OOE+Oe": 4.51E-04; 1.10E-05, 25 j 388.38 620 8400| O.OE+00: 3.5E-03 L !x i [l664£'5 _"~ i STYRENE i 910! 7.10E-02 8".bbE-06i 300, i.13E-01i 2.76E-03^ 25; 418.31 "636.66 8,737| O.OE+00] 1.0E+00 L [ : 1 : ; iTETRACHLORdETHANE, 1,1,1,2- ! 980i 4.23E 62 9.i4E-i6 1.10E+03. 9.92E-02! 2.42E-03j 25 1 411.2! 624 8255"j 7.4E-06J 1.1E-01 ._kj -\r [79-34-5 JJEtRACHlbROEfHANE. 1,1,2,2- 1 79 j 7.10E-02 7.90E-06; 2860, 1.41E-02j 3.44E-04; 25; 419.60! 661.15 8,996! 5.8E-05 2.1 E-01 !TETRACHL6ROETHYLENE(PCE) j_ 300! 7.20E-02 8.20&06', 16"2i 7.54E-01' i.84E-02f 25' 394.40) 620.20 8,2661 5.8E^b7: 4.9E-01[ L j i I i fTbs-eiw' ; TOLUENE ' "130J 8.70E-02" 8.60E-66"! 532~.4! 2.72E-01 1 6.63E-03J 25 ; 383.78 591.79 7.930J O.OE+OOi 4.0E-01 ...L. • . - • i (75-25-2 ITRIBROMOMETHANE (BROMOFORM) i 130, 1.49E-02 1.03E-05! 3050 2.19E-02; 5.34E-04i 25: 422.35 696.00 9,479 1.1E-06, 7.0E-02 L ! ""•• X 1

253-0300-100/ FINAL /Page 45 AR307632 -Tables Chemical/Physlcal/Toxlcologlcal Properties ._ ..^ _ 1 i AHv.b CAS Koc Da Dw S H H TB Tc URF Regulated Substance 2 2 | (cal/mol) Number (cm'/g) (cm /s) : (cm /s) (mg/L) unltless (atm-m'/mol) °K "K (rS3) |^° URF RfC<" 76-13-1 iTRICHLORO-1,2,2-TRIFLUOROETHANE, 1200|"2.88E-02J "8.07E-06I "1.70E+02! 2.16E+6i1 " 5.26E-01! "" 25i 320.8J " 4Sff^{" "" 65701' aOE+b'O; " 3.6E+Ol"i L |1,1,2- r •••! jTRICHLpRpBENZENE, ^,2,4- 1500J 3.qpE:02! 8.23E-06J 4.44E+01 i 5.82E-02; 1.42E-03! 25i ...... 486JISj 725] 10471] l-OEêj 2.0E-0^ S " E, 1,1,5- 31PPl.3.pOE-p2i _8.2pE-p6L5.80E+pJ3. j 7.75E-02. ] 1-?9|-03- i _25J_._ -_481.2j . J743JJ5J._ : 106001 O.OE+OOi iTRICHLOROETHANE,Tl,1- " 100j, 7.80E-02] "aSOE-qep "1495]" ^Sf-qi! 1.72E-?2) ?5J 3^.24J 545.00[ ' 7,"l36['"q.pE+Opj 7 6 7 . !. -?9E-p2jJB.80E-06; 4420 3.74E:02, 9.12E-04J 25!_ 386.15[ 602.00[_ 8,322] 1.6E-05J _1^4E-p2| L 79-01-6 _i.IRICHLgROETHYLENE_(TCE) 9.1pE-p6i 1100L 4.22E-011 36J3.36J 598-77^6 ~ '~|TRICHLORbPROPANE. 1,l',2-' 24[ 3.96J-02[~ 9.321-^6] 2.7pE+p3!" 3".17E-04 ~ ~25i'~_~' ' _ 407)" "~~"'" 623 " '_" '8327 1 'p-OE+pO 96-1 &4 ITRICHLOROPROPANE, 1,2,3- 280 j 7.10E-02J f.gpj-pei 1.90E+p3J 3-43E-04 25 1 96-19-5 'TElpliLpROJPRpPENE, 1,2,3-^ J9[ 7.~iOE-02r7.9ptp6[ 2.7PE+03; ' 7.22E-Olf' _ 63.7 j. _ . 95-63-6 iTRIMETHYLBENZENE," T"3,4" 2200i' 6!44E-62| 7.92E-66' 5.60E+011 2.53E-6l i 6.16E-03I 25; 442.53 649.1 f . 9380"" O.OE+bdi' 6oE-03i l T J.(TRJME HYLB_ENZENÎ 1,2,4-) jTRIMEfHYLBENZENE. 1,3,5- 660! 6.p2E-p2i 8.67E-06J 4.89E+01; 3.60E-01,' 437.89 637.31_ ?33praoE+p6j" "6.p|-b3! I : Z8j 8.50E-62: 9.20E-06i 2.ppE+04i" 2.1pE-02' 25; 519".13!. " 78001 "6."dE+boi""2.bEû"iT L [593-60-2 |y!NYL_BRpMlpE i-isE-OS 4.18E+03! 1~65E+00; 25 j 289 j 470^1] _6073l 3JE-05| _3.0E-03j L^ 1 5 270 E _ _ - .-?.3i-P ' P; i-ii. +ooi ?-7j!:?2i 2§j_ I 259.25J Jf32JJOj^' 5,25pl""" "" 'txYL'ENES'(fOTALJ' 3501 7.14E-02I 9.'34E-66i "" 175! 2.46E-01; ~'""2'5l " ~"413!~"

Key to Column Headings

Koc - Organic carbon partition coefficient Da - Diffusivity in Air Dw — Diffusivity in water S - Pure component water solubility H1 - Henry's Law constant H - Henry's Law Constant at reference temperature TR - Henry's Law Constant reference temperature TB.Normal boiling point Tc - Critical temperature AHv.b - Enthalpy of vaporization at the normal boiling point URF - Unit risk factor RfC - Reference concentration State - Physical state at soil temperature: S=solid; L=liquid; G=gas URF(x) - Unit risk factor used to calculate RfDi in Table 5 of the regulations is based on a route-to-route extrapolation RfC(x) - Reference concentration in Table 5 of the regulations is based on a route-to-route extrapolation

253-0300-1OO/ FINAL /Page 46 AR307633 Table 10 Chemicals of Potential Indoor Air Concern Soil Residential Nonresidential Non-Residential (Commercial/Industrial) Using (Commercial/Industrial) USEPA Toxicity Endpoints Using OSHA Endpoints* Benzene Bis(2-chloro-isopropyl)ether 1-Chlorobutane Bis(2-ch]oro-isopropyl)ether Bromodichloromethane Hexane Bromodichloromethane 1,3-Butadiene Xylenes Bromomethane Carbon Disulfide 1,3-Butadiene Carbon Tetrachloride Carbon Disulfide Chloro-1 -Propene,3-( Ally 1 Carbon Tetrachloride Chloride) Chloro-l-Propene,3-(Allyl 1-Chlorobutane Chloride) Chlorodibromomethane Chlorobenzene Chloroethane 1-Chlorobutane Chloroform Chlorodibromomethane Chloroprene Chloroethane 2-Chloropropane Chloroform l,4-Dichloro-2-Butene Chloroprene Dichlorodifluoromethane (Freon 2-Chloropropane 12) 1,4 -Dichlorobenzene 1,1 - Dichloroethane Dichlorodifluoromethane (Freon trans - 1,2 - Dichloroethene 12) 1,3-Dichloropropene 1,1 - Dichloroethane Dicyclopentadiene 1,2-Dichloroethane Ethylbenzene cis - 1,2 - Dichloroethene Fluorotrichloromethane (Freon trans - 1,2 - Dichloroethene 11) 1,3-Dichloropropene Furan Ethylbenzene Hexane Fluorotrichloromethane (Freon 11) Methylsryrene,(Mixed Isomers) Furan Methylstyrene, alpha Hexane 1,1,2-Trichloropropane Methylstyrene (Mixed Isomers) 1,2,3-Trichloropropane Methylstyrene, alpha 1,2,3-Trichloropropene n-Propylbenzene Vinyl Bromide (Bromoethene) 1,1,1,2-TetrachIoroethane Vinyl Chloride Toluene Xylenes 1,2,3-Trichloropropane 1,2,3-Trichloropr opene Vinyl Bromide (Bromoethene) Vinyl Chloride Xylenes * The OSHA-derived endpoints may be used as an alternate to the default EPA-derived screen when OSHA regulations are fully implemented (e.g., notification, monitoring) arid documented in a workplace building.

253-0300-1007 FINAL /Page 47 AR307634 the Statewide health standard Definitions for IAQ Decision Matrix (see Figures 1 and 2)

COPIAC Contaminant (substance) of potential indoor air concern. Determined using contaminant lists from nearby states and PA-specific Johnson and Ettinger IAQ modeling.

COPIACs for soil COPIACs (those that should always be addressed) identified in soil based on specific receptors are as follows: Residential Benzene Bis(2-chloro-isopropyl)ether Bromodichloromethane Bromomethane 1,3-Butadiene Carbon Disulfide Carbon Tetrachloride Chloro-l-Propene,3-(Allyl Chloride) Chlorobenzene 1 -Chlorobutane Chlorodibromomethane Chloroethane Chloroform Chloroprene 2-Chloropropane 1,4 -Dichlorobenzene Dichlorodifluoromethane (Freon 12) 1,1 - Dichloroethane 1,2-Dichloroethane cis - 1,2 - Dichloroethene trans - 1,2 - Dichloroethene 1,3-Dichlor opropene Ethylbenzene Fluorotrichloromethane (Freon 11) Furan Hexane Methylstyrene (Mixed Isomers) Methylstyrene, alpha n-Propylbenzene 1,1,1,2-Tetrachlor oethane Toluene ' 1,2,3-Trichloropropane 1,2,3-Trichloropropene Vinyl Bromide (Bromoethene)

253-0300-1007 FINAL /Page 48 AR307635 Vinyl Chloride Xylenes

Nonresidential Bis(2-chloro-isopropyl)ether Bromodichloromethane 1,3-Butadiene Carbon Disulfide Carbon Tetrachloride Chloro-l-Propene,3-(AUyl Chloride) 1 -Chlorobutane Chlorodibromomethane Chloroethane Chloroform Chloroprene 2-Chloropropane l,4-Dichloro-2-Butene Dichlorodifluoromethane (Freon 12) 1,1 - Dichloroethane trans - 1,2 - Dichloroethene 1,3-Dichloropropene Dicyclopentadiene Ethylbenzene Fluorotrichloromethane (Freon 11) Furan Hexane Methylstyrene,(Mixed Isomers) Methylstyrene, alpha 1,1,2-Trichloropropane 1,2,3-Trichloropropane 1,2,3-Trichloropropene Vinyl Bromide (Bromoethene) Vinyl Chloride Xylenes

Nonresidential OSHA-derived 1-Chlorobutane Hexane Xylenes

COPlACs for groundwater Residential Chloroethane Chloroform Chlorodibromomethane Ethylbenzene Naphthalene 1,1,1,2-Tetrachloroethane

253-0300-1007 FINAL /Page 49 AR307636 1,2,3-Trichloropropane Xylenes

Nonresidential Benzotrichloride Chloroethane Chloroform Chlorodibromomethane Ethylbenzehe 1,2,3-Trichloropropane

IAQ sampling Indoor air samples are to be taken from an occupied or potentially occupied home or building. Passive badge samplers, direct measurement using a FID or FID, adsorption onto activated charcoal/resins, or direct sample collection using evacuated SUMMA-passivated canisters (USEPA Method TO-15 or TO-14) with analytical testing at a laboratory certified by USEPA for such analyses. Direct air sampling using SUMMA canisters is often preferred by the USEPA and other agencies. Acrylonitrile and 1,3-Dichloropropane are not part of the TO-14/TO-15 analyte list, however they can be added if they are contaminants of concern. Appendix A is provided as information on other analytical methods that may be used. Method detection limits (MDLs) vary from lab to lab, therefore it is recommended that the lab be consulted prior to sampling about the compounds of interest and MDLs. Factors such as cost, sensitivity, data reliability and the data quality objectives should be considered prior to selecting a method that best encompasses the contaminants of concern. Other considerations include but are not limited to duration of sample collection, .sample locations, analytes/contaminants of concern, number of samples, atmospheric conditions, ambient (background) air quality, and structural considerations. Rigorous indoor air quality monitoring programs can become quite expensive to implement. These results are to be compared to the following criteria. For residential exposures, the criteria are medium specific concentrations (MSCs) for indoor air calculated using the equations presented in Table 7. For nonresidential exposures, if, for any

253-0300-1007 FINAL /Page 50 AR307637 selected VOC at the site, OSHA regulates the chemical at the site and OSHA has jurisdiction over the site, then OSHA applies for that chemical and continued monitoring and reporting should occur to ensure continued compliance under OSHA. For all other chemicals, the criteria are medium-specific concentrations (MSCs) for indoor air calculated using the equations for nonresidential exposures presented in Table 7. Indoor air samples are to be taken from basements in those locations where the highest routine exposures are expected and the concentrations must be below the MSCs for indoor air. This procedure is only to be applied to homes and buildings with basements.

Johnson-Ettinger Vapor Intrusion Johnson and Ertinger (1991) developed a model Model (USEPA Version 2.3) which coupled steady-state diffusion from a planar source to vapor intrusion into basements of buildings via advection and diffusion processes. The model is based on permeation through cracks in the foundation/floor with the planar source at a finite depth, with a boundary around the building referred to as the "building zone of influence". The USEPA although initially attempting to develop generic soil screening levels (SSLs) for volatiles, has adopted the Johnson-Ettinger model to examine subsurface vapor intrusion into buildings via a site- specific approach. Degradation of the contaminant is not considered nor is convective water movement in the soil column. The model is one-dimensional, providing an estimated attenuation coefficient that associates indoor vapor concentration to the vapor concentration at the source and is based on soil building pressure differentials (USEPA 2001b).

Potentially complete exposure An exposure pathway is the course a regulated pathway substance(s) takes from the source area(s) to a species of concern including absorption or intake into the organism; a pathway must include a source or release from a source, a point of exposure, and an exposure route into the organism to be potentially complete. Completed exposure pathways need to be present for exposure of the receptor to occur. An exposure pathway must exist between substance and receptor.

Preferential exposure pathway A preferential pathway is defined as a natural (e.g., )

253-0300-1007 FINAL /Page 51 AR307638 shallow rock or vertically fractured soil) or manmade (e.g., buried utilities) feature that creates a sufficiently direct pathway from a source to a receptor to make the use of the default model for predicting indoor air concentrations unacceptable. Such pathways must be shown to significantly reduce the ability of the natural environment to attenuate the concentrations of VOCs at any point from the source to the receptor and to do so in a manner or to an extent that is not accounted for in the model assumptions and would substantially alter the default model's accuracy in predicting conservative indoor air concentrations. Shallow utilities buried at a depth that is insignificant with respect to the column of soil between the slab and the source do not automatically constitute a preferential pathway, nor should this definition include surface paving outside the building or the presence of crushed stone beneath the slab as normally placed for slab foundation material. If such a feature does not pass through the source, it must occur within 30 feet of the source in order to constitute a potential preferential pathway.

Receptor A receptor (humans in this case) is located in an occupied or potentially occupiable home or building built on a slab or below grade basement or area.

Sand-like material A conglomeration of residuals that are similar to sand and have the same characteristics and properties as sand (i.e. foundry sand, ash).

Separate phase liquid (SPL) SPL is that component of contaminated environmental media comprised of interstitial nonaqueous phase liquid which is not adsorbed onto or diffused into the soil matrix or dissolved in groundwater. There are two principal modes of occurrence of SPL in soil: zones of accumulation and residual zones. Both can occur in the unsaturated and saturated zones, but accumulation zones are more commonly present at the water table and below the water table (for DNAPLs). A value of 10,000 mg/kg in soil can be used as a guideline to determine the presence of SPL. In groundwater, a measurable thickness of 0.01 feet of LNAPL can be used. Soil gas Because sampling VOCs in indoor air can be

253-0300-1007 FINAL /Page 52 AR307639 complicated by sources of VOCs within a home or building, soil gas measurements can be taken at a distance not to exceed 5 feet from the slab or basement edge and compared to MSCs for soil gas, where MSCs for soil gas would be calculated as follows: MSCsc = MSCiAo TF

Where: MSCsc = Medium-specific concentration for soil gas (mg/m3); MSCiAQ = Medium-specific concentration for indoor aii (mg/m3); and TF = Transfer factor from soil gas to indoor air, = 0.01 (a conservative value relating concentrations in indoor air to concentrations in soil gas adjacent to a building based on data report in Management of Manufactured Gas Plant Sites, Volume III: Risk Assessment, Gas Research Institute, 1987, pages 6-30 and 6-31. To use such a procedure, a method or methods for taking soil gas samples and performing soil gas analysis must be specified or suggested. Soil-like material A conglomeration of soils that are similar to and have the same characteristics and properties as soil.

Vapor source The vapor source is the contaminated soil or groundwater with volatile constituents at concentrations equal to or above the limits related to PQLs as specified in 25 Pa. Code, Section 250.4 at a depth less than 5 feet beneath a receptor. Soil or groundwater at concentrations exceeding the acceptable levels specified in this document if present at a depth of greater than five feet below or within 100 feet of a receptor.

253-0300-100/ FINAL /Page 53 AR307640 Appendix A Analytical Methods for Air Sampling

Method Media Reporting Method of Detection Compound for Limit Analysis* Limit Collection (see notes) (see notes)

Acenaphthene TO-13A PUF/XAD 10 0.4 Acenaphthylene TO-13A PUF / XAD 10 0.35 Acetaldehyde Acetone TO-15 Can or Bag 1.9 0.47 Acetonitrile TO-15 Can or Bag 1.7 0.12 Acetophenone Acrolein TO-15 Can or Bag 1.1 0.11 Acrylamide Acrylic Acid Acrylonitrile TO-15 Can or Bag 11 0.17 Allyl Alcohol Aniline Anthracene TO-13A PUF/XAD 10 0.47 Benzene TO-15A Can or Bag 0.64 0.26 Benzotrichloride Benzyl chloride TO-15 Can or Bag 6.4 0.38 Biphenyl, 1-1 Bis (2-chlorpethyl) ether Bis (2-chloro-isopropyl) ether TO-13A PUF/XAD 10 1.6 Bis (chloromethyl) ether Bromochloromethane Bromodichloromethane TO-15 Can or Bag 0.87 0.31 Bromomethane TO-15 Can or Bag 0.78 0.35 Butadiene, 1 ,3- TO-15 Can or Bag 0.88 0.18 Butyl Alcohol, N- TO-15 Can or Bag 1.3 0.3 Butylbenzene, N- Butylbenzene, Sec- Butylbenzene, Tert- Carbon Disulfide TO-15 Can or Bag 3.1 0.44 Carbon Tetrachloride TO-15 Can or Bag 1.3 0.25 Chloro-1,1-Difluoroethane, 1- Chloro-1-Propene, 3- (Allyl Chloride) TO-15 Can or Bag 1.6 0.47 Chlorobenzene TO-15 Can or Bag 0.92 0.41 Chlorobutane, 1- Chlorodibromomethane TO-15 Can or Bag 1.7 0.68 (Dibromochloromethane) Chlorodifluoromethane TO-15 Can or Bag 3.5 - Chloroethane TO-15 Can or Bag 1.1 0.37 Chloroform TO-15 Can or Bag 0.97 0.29 Chloronaphthalene, 2- TO-13A PUF/XAD 10 1.1

253-0300-1007 FINAL /Page 54 AR307641 Appendix A Analytical Methods for Air Sampling

Method Media Reporting Method of Detection Compound for Limit Limit Analysis* Collection (see notes) (see notes) Chlorophenol, 2- TO-13A PUF / XAD 10 3.25 Chloroprene Chloropropane, 2- Chlorotoluene, O- Cresol (s) Cresol, O- (Methylphenol, 2-) TO-13A PUF / XAD 10 10 Crotonaldehyde Crotonaldehyde, Trans- Cumene (Isopropylbenzene) TO-15 Can or Bag 2 0.15 Cyclohexanone Dibromo-3-chloropropane, 1 ,2- Dibromoethane, 1,2- (Ethylene TO-15 Can or Bag 1.5 0.46 Dibromide) Dibromomethane TO-15 Can or Bag 0.78 0.35 Dichloro-2-Butene, 1 ,4- 1 Dichlorobenzene, 1,2- TO-15 Can or Bag 1.2 0.42 Dichlorobenzene, 1 ,3- TO-15 Can or Bag 1.2 0.48 Dichlorobenzene, 1,4- TO-15 Can or Bag 1.2 0.36 Dichloroethane, 1,1- _, TO-15 Can or Bag 0.81 0.2 Dichloroethane, 1,2- TO-15 Can or Bag 0.81 0.24 Dichloroethylene, 1,1- TO-15 Can or Bag 0.79 0.24 Dichloroethylene, Cis - 1,2- TO-15 Can or Bag 0.79 0.2 Dichloroethylene, Trans - 1,2- TO-15 Can or Bag 0.79 0.28 Dichloromethane (Methylene TO-15 Can or Bag 0.69 0.24 Chloride) Dichloropropane, 1,2- TO-15 Can or Bag 0.92 0.28 Dichloropropene, 1,3- (cis or trans) TO-15 Can or Bag 0.91 0.36 Dichloropropionic acid 2,2- (Dalapori) Dicyclopentadiene Dimethylaniline , N,N- Dioxane, 1,4- TO-15 Can or Bag 1.8 0.18 Epichlorohydrin Ethoxyethanol, 2- (EGEE) Ethyl Acetate TO-15 Can or Bag 0.72 0.29 Ethyl Acrylate Ethyl Benzene TO-15 Can or Bag 0.87 0.3 Ethyl dipropylthiocarbanate, S- (EPTC) Ethyl Ether TO-15 Can or Bag 1.5 0.21 Ethyl Methacrylate Ethylene Glycol

253-0300-100/ FINAL /Page 55 AR307642 Appendix A Analytical Methods for Air Sampling

Method Media Reporting Method of Detection Compound for Limit Analysis* Limit Collection (see notes) (see notes) Fluorene TO-13A PUF/XAD 10 0.12 Formaldehyde Formic Acid Furan Furfural Hexane TO-15 Can or Bag 3.5 0.35 Hydrazine / Hydrazine Sulfate Isobutyl Alcohol Methacrylonitrile Methanol Methoxyethanol, 2- Methyl Acetate Methyl Acrylate Methyl Chloride Chloromethane) TO-15 Can or Bag 0.82 0.14 Methyl Ethyl Ketone (2-Butanone) TO-15 Can or Bag 2.9 0.59 Methyl Isobutyl Ketone TO-15 Can or Bag 1.6 0.36 Methyl Methacrylate TO-15 Can or Bag 1.6 0.37 Methyl Styrene (Alpha only) TO-15 Can or Bag 1.9 0.29 Methyl Tert-butyl Ether (MTBE) TO-15 Can or Bag 3.6 0.36 Methylnaphthalene, 2- TO-13A PUF/XAD 10 0.57 Methylstyrene, Alpha Naphthalene TO-13A PUF/XAD 10 0.42 Nitrobenzene TO-13A PUF / XAD 10 1.84 Nitrophenol, 2- TO-13A PUF/XAD 50 3.43 Nitropropane, 2- Nitrosodiethylamine, N- Nitrosodimethylamine, N- TO-13A PUF/XAD 10 0.5 Nitroso-di-N-butylamine, N- PCB-1221 TO-4A PUF 0.5 0.03 Phenanthrene TO-13A PUF/XAD 10 0.13 Phenol TO-13A PUF/XAD 50 10 Propylbenzene, N TO-15 Can or Bag 0.9 0.22 Propylene Oxide Pyridine Styrene TO-15 Can or Bag 0.85 0.26 Tetrachloroethane, 1,1,1,2- TO-15 Can or Bag 1.4 NA Tetrachloroethane, 1,1,2,2- TO-15 Can or Bag 1.4 0.55 Tetrachloroethylene (PCE) TO-15 Can or Bag 1.4 0.61 Toluene TO-15 Can or Bag 1.1 0.34 Tribromomethane (Bromoform) TO-15 Can or Bag 2.1 0.72 Trichloro-1 ,2,2-trifluoroethane, 1,1,2- TO-15 Can or Bag . 3.1 0.54

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Method Media Reporting Method of Detection Compound for Limit Analysis* Limit Collection (see notes) (see notes) Trichlorobenzene, 1 ,2,4- TO-15 Can or Bag 5.9 0.67 Trichlorobenzene, 1 ,3,5- Trichloroethane, 1,1,1- TO-15 Can or Bag 1.1 0.44 Trichloroethane, 1,1,2- TO-15 Can or Bag 1.1 0.44 Trichloroethylene (TCE) TO-15 Can or Bag 1.1 0.43 Trichloropropane, 1,1,2- Trichloropropane, 1 ,2,3- TO-15 Can or Bag 1.2 0.18 Trichloropropene, 1,2,3- Trimethylbenzene, 1 ,3,4- TO-15 Can or Bag 2 0.39 (Trimethylbenzene, 1,2,4-) Trimethylbenzene, 1,3,5- TO-15 Can or Bag 2 0.44 Vinyl Acetate TO-15 Can or Bag 3.5 0.14 Vinyl Bromide (Bromoethene) TO-15 Can or Bag 0.87 0.31 Vinyl Choride TO-15 Can or Bag 0.51 0.15 Xylenes (Total) TO-15 Can or Bag 2.2 0.87 * Some compounds with no method or limit listing can be analyzed as TICs (Tentatively Identified Compounds) on the appropriate method. Consult with lab on appropriate method. Notes: TO-4A is reported in ug/PUF TO-13A is reported in ug/PU TO-15A is reported either as ug/m3 as indicated on this table or as ppbv or parts per billion by volume ug/m3 is calculated as (ppbv x molecular weight) divided by 24.45 Can or Bag media refers to either a Summa Can or a Tedlar Bag. Tedlar bags are not the preferred media for collection of volatiles as they only have a 48 hour hold time and volatiles tend to interact with the bag. Lighter volatiles may escape the bag; heavier volatiles stick to the inside of the bag; air transportation is not recommended. Summa Cans are normally 6 L cans PDF is Polyurethane Fiber XAD is a resin Dioxins/Furans in ambient air can be done by TO-9A Method Detection Limits (MDLs) vary between labs. Labs should be consulted prior to sampling to obtain MDLs and reporting limits of the compounds of interest.

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