Document Moscow_doc_842d20a0c4

Master Quality Assurance Project Plan for the City of Moscow Brownfields Phase II Environmental Site Assessments, Moscow, Idaho Prepared for: City of Moscow 206 E. 3rd Street Moscow, Idaho 83843 Prepared by: TerraGraphics Environmental Engineering, Inc. 121 S. Jackson St. Moscow, ID 83843 www.terragraphics.com October 31, 2011 ---PAGE BREAK--- ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments iii Table of Contents Section 1.0 Project Management 1 1.1 Project/Task Organization 1 1.2 Problem Definition/Background 3 1.3 Project/Task Description 4 1.3.1 Description of the Project Area 4 1.3.2 Description of Site-Specific Assessment 6 1.3.3 Project Timetable 6 1.4 Quality Objectives and Criteria 6 1.4.1 Data Quality Objectives Process 6 1.4.1.1 State the Problem 6 1.4.1.2 Identify the Decision 7 1.4.1.3 Identify Inputs to the Decision 7 1.4.1.4 Define the Study Boundaries 7 1.4.1.5 Develop a Decision Rule 7 1.4.1.6 Specify Limits on Decision Errors 7 1.4.1.7 Optimize the Design for Obtaining Data 9 1.4.2 Data Quality Indicators 9 1.4.2.1 Precision 9 1.4.2.2 Accuracy 9 1.4.2.3 Representativeness 9 1.4.2.4 Completeness 10 1.4.2.5 Comparability 10 1.5 Special Training/Certification 10 1.6 Documentation and Records 10 1.6.1 Field Operation Records 10 1.6.1.1 Sample Collection Records 10 1.6.1.2 Chain-of-Custody 10 1.6.1.3 QA/QC Sample Records 11 1.6.1.4 General Field Procedures 11 1.6.1.5 Corrective Action Reports 11 1.6.2 Laboratory Records 11 1.6.2.1 Sample Data 11 1.6.2.2 Sample Management Records 11 1.6.2.3 Test Methods 11 1.6.2.4 QA/QC Reports 11 1.6.3 Data Handling Records 12 Section 2.0 Data Generation and Acquisition 12 2.1 Sampling Process Design 12 2.2 Sampling Methods 12 2.3 Sample Handling and Custody Procedures 12 2.3.1 Sample Numbering System 12 2.3.2 Sample Custody 13 2.4 Analytical Methods 13 ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments iv 2.5 Quality Control 14 2.5.1 Field Quality Control Checks 15 2.5.2 Laboratory Quality Control Checks 15 2.6 Instrument/Equipment Testing, Inspection, and Maintenance 15 2.7 Instrument/Equipment Calibration and Frequency 16 2.8 Inspection/Acceptance of Supplies and Consumables 16 2.9 Non-direct Measurements 16 2.10 Data Management 16 2.10.1 Data Validation 16 2.10.2 Data Recording 16 2.10.3 Data Transformation 16 2.10.4 Data Transmittal 16 2.10.5 Data Reduction 17 2.10.6 Data Analysis 17 2.10.7 Data Tracking 17 2.10.8 Data Storage and Retrieval 17 Section 3.0 Assessment and Oversight 17 3.1 Assessments and Response Actions 17 3.2 Reports to Management 17 Section 4.0 Data Validation and Usability 18 4.1 Data Review, Verification, and Validation 18 4.2 Verification and Validation Methods 18 4.3 Reconciliation and User Requirements 18 Section 5.0 References 19 Appendices Appendix A Health and Safety Plan A Appendix B IDEQ REM Initial Default Target Limits (IDTLs), IDEQ Petroleum Rule Residential Use Screening Levels (RUSLs), and USEPA Regional Screening Levels (RSLs) B ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments v List of Figures Figure 1. Organization Chart 2 Figure 2. Key Project Personnel and Responsibilities 3 Figure 3. Site Location Map 5 Figure 4. DQO Process Flow Chart 8 List of Tables Table 1. Techniques, Method Number, and Reporting Limits for Analyses 14 ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments vi Acronyms and Abbreviations ABCAs Analysis of Brownfields Cleanup Alternatives ACMs Asbestos-Containing Materials ASTM American Society for Testing and Materials CFR Code of Federal Regulations The City City of Moscow COCs Constituents of Concern DQO Data Quality Objective ESA Environmental Site Assessment IDEQ Idaho Department of Environmental Quality IDTL Initial Default Target Levels National Primary Drinking Water Standards PAH Aromatic Hydrocarbon PCBs Biphenyls QA Quality Assurance QA/QC Quality Assurance/Quality Control QAPP Quality Assurance Project Plan QC Quality Control RCRA Resource Conservation and Recovery Act REM Risk Evaluation Manual RPD Relative Percent Difference RSL Regional Screening Level RUSL Residential Use Screening Level SVOC Semi-Volatile Organic Compound TerraGraphics TerraGraphics Environmental Engineering, Inc. USEPA U.S. Environmental Protection Agency VOC Volatile Organic Compound ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments vii DISTRIBUTION LIST Jeffrey B. Jones, AICP Economic Development Specialist Administration Department City of Moscow 206 E. 3rd Street Moscow, ID 83843 Steve Gill Brownfields Program Specialist IDEQ, Coeur d’Alene Regional Office 2110 Ironwood Parkway Coeur d’Alene, ID 83814 Aaron Scheff Brownfields Program Specialist IDEQ, Boise Regional Office 1445 N. Orchard St. Boise, ID 83706 Terri Griffith Brownfields Project Officer Environmental Protection Agency, Region 10 1200 Sixth Avenue, Suite 900 Seattle, WA 98101 Bruce Wicherski Brownfields Program Contracting Supervisor IDEQ, Main Office 1410 North Hilton Boise, ID 83706 Natalie Morrow Tetra Tech, Inc. 2525 Palmer St., Suite 2 Missoula, MT 59808 Jerry Lee TerraGraphics Environmental Eng. 121 South Jackson Moscow, ID 83843 Shawn Ringo STRATA 1428 South Main Moscow, ID 83843 Robin Nimmer TerraGraphics Environmental Eng. 121 South Jackson Moscow, ID 83843 John Coddington Anatek Labs, Inc. 1282 Alturas Drive Moscow, ID 83843 Gina Grepo-Grove Regional Quality Assurance Manager Environmental Protection Agency, Region 10 1200 Sixth Avenue, Suite 900 OEA-095 Seattle, WA 98101 ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 1 Section 1.0 Project Management This sampling effort is being conducted as part of the City of Moscow Brownfields Assessment Project. The objective of this Quality Assurance Project Plan (QAPP) is to guide quality assurance and quality control (QA/QC) procedures for completion of Phase II Environmental Site Assessments (ESAs) in the City of Moscow Brownfields Assessment Project program boundaries. It is intended to ensure that sampling activities comply with the U.S. Environmental Protection Agency’s (USEPA) requirements for QAPPs (USEPA, 2001). The primary goals will be to characterize potential soil, groundwater, or air contamination, and to potentially provide data for use in the Idaho Department of Environmental Quality’s (IDEQ) Risk Evaluation Manual (REM) in order to determine potential hazards and/or risks associated with found contamination. The following sections list the key project personnel and their responsibilities, explain the problem(s) and site history(ies), project schedules, data quality objectives, sampling, oversight, and data validation and use. 1.1 Project/Task Organization This Master QAPP provides a general overview of the sampling strategies intended to evaluate recognized environmental conditions identified for the City of Moscow (hereafter, referred to as “the City”) Brownfields corridor and other negatively impacted and/or stigmatized areas, and to identify a streamlined format for site-specific QAPPs. Each site-specific QAPP will adhere to the same general format and organization as the following Master QAPP sections, but will be specific to that the site’s planned Phase II ESA project organization and sampling and analysis activities. Each site-specific QAPP will include the names of City of Moscow consultant personnel performing the Phase II site assessments, and will identify the subcontractors and laboratories supporting the assessment. An example organization chart is provided below in Figure 1. ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 2 Figure 1. Organization Chart This master QAPP identifies the City of Moscow and the IDEQ personnel with management oversight and the two City of Moscow consultants who will be performing the site-specific Phase II ESAs during 2011-2012. Each site-specific QAPP will include a list or table of key personnel and responsibilities (Figure 2) which should include all subcontractors identified in the organization chart environmental laboratory, driller, experts etc.). Idaho DEQ Project Manager City of Moscow Project Manager Consultant Project Manager Consultant Environmental Scientist & Sampling Support Laboratory Subcontractor Experts Consultant QA Officer USEPA Project Officer Outreach Consultant ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 3 Figure 2. Key Project Personnel and Responsibilities Name Title/Responsibility Jeffrey B. Jones City of Moscow 206 E. 3rd Street Moscow, ID 83843 (208) 883-7007 AICP, Project Manager: Economic Development Specialist Steve Gill IDEQ Coeur d'Alene Regional Office 2110 Ironwood Parkway Coeur d'Alene ID 83814 (208) 666-4632; (208) 818-5326 (cell) Coeur d'Alene Regional Office Brownfields Program Specialist Aaron Scheff IDEQ, Main Office 1410 North Hilton Boise, Idaho 83706 (208) 373-0420 IDEQ State Brownfields Program Manager Robin Nimmer TerraGraphics 121 South Jackson Street Moscow, Idaho (208) 882-7858 TerraGraphics Project Manager, reports to IDEQ Program Specialist and TerraGraphics Program Manager, Jon Munkers Natalie Morrow TETRA TECH 2525 Palmer St., Suite 2 Missoula, MT 59808 (406) 327-5235 TETRA TECH Project Manager, reports to IDEQ Program Specialist and TETRA TECH Program Manager, Rick Osgood Terri Griffith U.S. Environmental Protection Agency 1200 Sixth Avenue, Suite 900 Seattle, WA 98101 USEPA Brownfields Project Officer 1.2 Problem Definition/Background Each site-specific QAPP will provide background information related to the individual site area sufficient to provide a historical, regulatory, and scientific perspective. Site-specific QAPPs will also identify the consultant contracted by the City of Moscow to perform the Phase II ESA investigation activities. The City of Moscow was awarded an USEPA Brownfields Assessment Coalition Grant (for hazardous substances contamination and petroleum contamination) in August of 2010. The City of Moscow is part of the Greater Moscow Area Coalition, which also includes the Moscow Urban Renewal Agency and Latah County. The City is using the USEPA grant funds to conduct Phase I and II ESAs, as well as Analysis of Brownfields Cleanup Alternatives (ABCAs) for multiple Brownfield properties along a former ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 4 railroad/industrial corridor, future industrial park property, and other negatively impacted and/or stigmatized areas. The primary goal of this project is to expedite redevelopment of critical distressed properties to improve environmental, economic, and social conditions for the greater Moscow community. The objectives necessary to meet this goal include the following tasks:  Conduct site inventory and site selection activities;  Prepare environmental site assessments and ABCAs for selected properties; and  Leverage project funding and assessment work to promote redevelopment of critical properties within the corridor and other negatively impacted and/or stigmatized areas. In addition to these specific objectives, the project will also have a strong component of public outreach and education that will inform the public about each phase of the project (Moscow City Council Agenda, 2011). 1.3 Project/Task Description In this section each site-specific QAPP will provide an overview of the planned Phase II investigation activities and a schedule for implementation. This section of site-specific QAPPs should also provide maps or tables that illustrate the geographic locations of field tasks and a brief overview of how the Phase II ESAs will resolve the problem or question stated in Section 1.2. 1.3.1 Description of the Project Area The majority of the properties that have been preliminarily identified for assessment through this project are located within a former railroad and industrial use corridor; however, there are other sites outside of the corridor that may also need assessment. The Brownfields corridor extends from the northern edge of Moscow’s downtown, near A Street, to the southern edge of the City, where U.S. Highway 95 leaves Moscow and heads south towards Lewiston. Figure 3 provides a site location map of the corridor. In addition to containing many of the abandoned and distressed properties in Moscow, the Brownfields corridor is densely populated with a wide range of housing types and income levels. This corridor also includes Paradise Creek, Paradise Path, and the Latah Trail which provide the downtown core with much needed green space and pedestrian access. ---PAGE BREAK--- Figure 3. Site Location Map ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 6 1.3.2 Description of Site-Specific Assessment Activities Each site-specific QAPP will identify the specific tasks to be conducted utility and/or geophysical survey, mobilization, type(s) of sampling activities, and demobilization). 1.3.3 Project Timetable Each site-specific QAPP will identify the timeline for specific project execution. Schedule of Activities (example)  Site-specific QAPP, site-specific Health and Safety Plan (see Appendix A for an example Health and Safety Plan), Subcontracting, Scheduling: (include dates here)  Sampling Schedule: (include dates here)  Report Preparation: (include dates here)  Issue Draft Report by (include date here) 1.4 Quality Objectives and Criteria Each site-specific QAPP will identify the data quality objectives and data quality indicators associated with the assessment. Consideration of data quality begins with the identification of data uses and data types. The USEPA Data Quality Objective (DQO) process used as a model for this project is described in USEPA Guidance on Systematic Planning Using the Data Quality Objectives Process ( QA/G-4) (USEPA, 2006). This document outlines processes that are general in nature to any environmental investigation. 1.4.1 Data Quality Objectives Process Each site-specific QAPP will identify the DQOs related to that site’s Phase II ESA. The DQO process results in a set of specifications needed to support the qualitative and quantitative design of a data collection effort. DQOs are used to assess the adequacy of data in relation to their intended use (USEPA, 2002). USEPA’s seven-step process for DQO development is presented below (Figure 4) to communicate the quality objectives for site assessment activities associated with the Moscow Brownfields corridor and other negatively impacted and/or stigmatized areas. 1.4.1.1 State the Problem The Moscow Brownfields corridor is densely populated with a wide range of housing types and income levels and contains many of the abandoned and distressed properties in Moscow. This corridor also includes Paradise Creek, Paradise Path, and the Latah Trail which provide the downtown core with much needed green space and pedestrian access. Site-specific assessments will determine if recognized environmental conditions have negatively impacted project sites within the Moscow Brownfields corridor or other negatively impacted and/or stigmatized areas. ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 7 1.4.1.2 Identify the Decision Samples will be collected at sites selected for the Greater Moscow Brownfield program. Samples will be collected and analyzed for a subset of analytes shown in Table 1. Analyte concentrations will be compared against Idaho Department of Environmental Quality (IDEQ) Risk Evaluation Manual (REM) Initial Default Target Levels (IDTLs) (IDEQ, 2004) and/or IDEQ petroleum rule for Residential Use Screening Levels (RUSLs) (IDEQ, 2011). Indoor air concentrations will be compared to USEPA regional screening levels (RSLs) (USEPA, 2011) for residental air. Site soil vapor data will be compared to USEPA RSLs (USEPA, 2011) as 10 times the resident air screening levels for subslab vapor intrusion and 100 times the resident air screening levels for deep vapor intrusion. 1.4.1.3 Identify Inputs to the Decision In order to adequately evaluate potential impacts to the project site’s groundwater, soil, and vapor, sampling and analysis are needed. Those chemical and physical characteristics needed to adequately provide information for decisions on potential constituents of concern (COCs) are provided in this QAPP (Table Specifics on those methodologies and relevant measurement characteristics can be found in Section 2.0. 1.4.1.4 Define the Study Boundaries The project sites are within the Moscow Brownfields corridor, which extends from the northern edge of Moscow’s downtown, near A Street, to the southern edge of the City, where U.S. Highway 95 leaves Moscow and heads south towards Lewiston (Figure However, other sites outside of the corridor may also need assessment. 1.4.1.5 Develop a Decision Rule The site assessments will involve collecting environmental data to support cleanup alternatives and/or redevelopment for each location. Cleanup alternatives will likely focus on cleanup or removal of routes of exposure to contamination by human and ecological receptors. To assess the feasibility of cleanup and/or redevelopment, the consultant will evaluate available data and make decisions based on the following decisions statements:  Do some portions of the site contain contaminants above cleanup levels that would preclude residential, commercial, and/or recreational redevelopment or use?  Do the contaminated materials at the site have the potential to affect human health and/or the environment?  Are there portions of the site that will not require any assessment or cleanup prior to redevelopment, remodeling or demolition, and/or continued use? 1.4.1.6 Specify Limits on Decision Errors Detection limits will meet the DQOs for comparison to the IDTLs, RUSLs, and RSLs (or multiples thereof). In order to ensure the quality of data is acceptable for use, Section 4.0 outlines all the specified tolerable limits and decision errors for the data obtained during this project. ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 8 Figure 4. DQO Process Flow Chart 1. State the Problem: Determine if recognized environmental conditions have negatively impacted the project sites within the Moscow Brownfields corridor or at other negatively impacted and/or stigmatized areas. 2. Identify the Decision: Do the identified on-site RECs result in COC concentrations that exceed Idaho’s targeted action levels IDTLs, RUSLs, RSLs)? 3. Identify Inputs to the Decision: Research and/or sample data collected from the project sites. 4. Define the Study Boundaries: Project sites within the Moscow Brownfields corridor or at other negatively impacted and/or stigmatized areas. 5. Develop a Decision Rule: Concentrations for samples collected will be compared against IDEQ REM IDTLs and/or IDEQ petroleum rule RUSLs. Vapor data will be compared to USEPA RSLs (which may also have a multiplier depending on the sample location). 6. Specify Limits on Decision Errors: Detection limits will meet the DQOs for comparison to the IDTLs/RUSLs/RSLs. 7. Optimize the Design for Obtaining Data: Samples will be collected per site-specific QAPPs to provide data for use in the REM. ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 9 1.4.1.7 Optimize the Design for Obtaining Data Samples will be collected per site-specific QAPPs to provide data for decision making. 1.4.2 Data Quality Indicators Each site-specific QAPP will present the final data quality indicators defined for that site’s assessment. 1.4.2.1 Precision Precision is a measure of data variation when more than one measurement is taken on the same sample. The precision estimate for duplicate measurements can be expressed as the relative percent difference (RPD):     % 100 2 2 1 2 1           C C C C RPD where: RPD = relative percent difference C1 = concentration of QA/QC sample C2 = concentration of associated original Acceptable precision limits are based on past databases, as defined by USEPA. Laboratory duplicate measurements will be obtained for each set of samples submitted and analyzed. 1.4.2.2 Accuracy Accuracy of laboratory analysis is assessed by measuring standard reference material and spiked samples. Standard reference materials are utilized to calibrate laboratory measurement instruments. Splitting a sample into two portions, spiking one portion with a known quantity of a constituent of interest, and analyzing both portions determine spike recovery. Spike recovery is expressed as percent recovery: % 100 ) ( %    TV OC SC RS where: %RS = percent recovery of spike SC = spiked sample concentration OC = original concentration TV = true value of the added spike Acceptable spike recovery limits are based on past data sets as defined by USEPA. 1.4.2.3 Representativeness This term expresses the degree to which the data accurately and precisely represent actual conditions or characteristics of the site. Representativeness uses background samples collected from areas isolated from, yet similar to, the site and analyzed for the same constituents. However, representativeness will most likely not be evaluated for this project. ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 10 1.4.2.4 Completeness Completeness is an estimate of the amount of valid data obtained from the analytical measurement system for a given set of data. The percent completeness is defined as the number of samples analyzed that meet the data quality goals divided by the total number of samples analyzed multiplied by 100. The completeness goal for this project is 95%. 1.4.2.5 Comparability Using standard USEPA accepted protocols; all matrix-specific samples will be collected, processed, and analyzed at sufficient detection limits, precision, and accuracy for correlation with previous available data. 1.5 Special Training/Certification Each site-specific QAPP will identify associated training and certification requirements related to the Phase II field assessment activities. A qualified Environmental Scientist will oversee all sampling activities and serve as the Site Safety and Health Officer for each site. Personnel performing sampling at each site will have training required by 29 Code of Federal Regulations (CFR) 1910.120 if necessary (Occupational Safety and Health Administration Hazardous Waste Operations Health and Emergency Response Training). Documentation of necessary training and certifications will be provided upon request. 1.6 Documentation and Records 1.6.1 Field Operation Records Each site-specific QAPP will identify record collection methods, field procedures, and any corrective actions that may take place during sampling events. 1.6.1.1 Sample Collection Records 1.6.1.1.1 Field Logbook A Rite-in-the-Rain (or similar) field notebook will be used in the field to document the samplers’ names, sample numbers, sample location points, maps and diagrams, equipment/method used for sample collection, weather conditions, and unusual observations. Field notebooks will be pre-numbered and will contain the date and signature lines. 1.6.1.1.2 Photographic Records Photographs will be taken of representative sampling locations and the surrounding site to show the area, related site activities, and sampling equipment. 1.6.1.2 Chain-of-Custody Records The chain-of-custody record will be filled out and kept to track samples from collection through delivery to the laboratory following the American Society for Testing and Materials guidance Standard Guide for Sampling Chain-of-Custody Procedures (D-4840-99) (ASTM, 2004). ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 11 1.6.1.3 QA/QC Sample Records QA/QC samples field and equipment rinsate blanks and duplicates) will be documented in the field notebook. This documentation will include custody seals, calibration history, level of standards, and the frequency and type of the QA/QC sample. 1.6.1.4 General Field Procedures The field procedures will be documented in the field notebook and will specify the method of collection bailer, low-flow peristaltic pump), location, and identify potential areas of difficulty in the actual gathering of the specimens. 1.6.1.5 Corrective Action Reports Should the primary method of sample collection fail, the corrective action or alternative method will be documented in the field notebook and reported in the subsequent final Phase II ESA letter report. For instance, should a low-flow peristaltic pump collection system fail static water is greater than one atmosphere below ground surface), a well may be sampled using hand bailers. 1.6.2 Laboratory Records 1.6.2.1 Sample Data Laboratory methods will follow the USEPA guidance, Test Methods for Evaluating Solid Waste, Physical/Chemical Methods (SW-846) (USEPA, 2008), which includes recording the date that samples were analyzed to verify holding times were met. The overall number of samples, sample location information, and date will be reported as well as any corrective action procedures for samples violating this QAPP and/or the site-specific QAPP protocol. 1.6.2.2 Sample Management Records The Laboratory will maintain detailed procedures for their recordkeeping in order to support the validity of analytical work. Each data report package submitted to the City’s contractor will contain the analytical laboratory’s written certification that the requested analytical method was run and that QA/QC checks were performed. After a technical data review conducted by the laboratory and the City’s contractor, the data will be sent to the City where it will be archived according to State or Federal records retention policies, whichever is more restrictive. 1.6.2.3 Test Methods The test methods used will be those identified in Table 1 (or per site-specific QAPPs) as appropriate for sample analysis. Should an alternative analysis be required, the laboratory will document and describe how the analyses were carried out in the laboratory. This will include sample preparation and analysis, instrument standardization, detection and reporting limits, and test-specific QC criteria. 1.6.2.4 QA/QC Reports Laboratory QA/QC methods will follow the USEPA guidance, Test Methods for Evaluating Solid Waste, Physical/Chemical Methods (SW-846) (USEPA, 2008). The report will include ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 12 laboratory QA/QC data from blanks, spikes and matrix spike duplicates, and duplicates. The City’s consultant will complete internal QA/QC to ensure the quality of the data. 1.6.3 Data Handling Records The Laboratory’s quality assurance personnel will perform the data validation. The data validation will convert raw data into reportable quantities and units by properly applying significant figures, recording extreme values, and identifying data qualifiers. The data will then be transmitted electronically and/or in hard copy to the City’s consultant, who will perform an internal QA/QC. The internal QA/QC will document the data meets the proposed DOQs. Section 2.0 Data Generation and Acquisition 2.1 Sampling Process Design Each site-specific QAPP will identify proposed sampling locations and detail the sample collection method(s) rationale for the sampling design related to the Phase II assessment. 2.2 Sampling Methods Each site-specific QAPP will identify specific procedures to be used for sample collection. The site-specific QAPP will also identify the types, numbers, media, depths, methods, and sequence of samples that may be collected as part of assessment activities. Equipment used to collect the samples will be described, decontamination procedures specified, and investigation-derived waste handling and sampling will be discussed. 2.3 Sample Handling and Custody Procedures Each site-specific QAPP will identify the sample numbering system and custody procedures. However, to prevent duplication and allow future users of the data to quickly identify general sample locations by site, all sample numbers will start with the site designations S1, S2, S3, S4, or S5, as applicable. 2.3.1 Sample Numbering System Example Subsurface Soil Samples (Discrete) and Groundwater Samples (Direct Push Discrete Interval Method) from Site 1: S1- Where: S1 = Site 1 NN = boring number or location XX = type if other than subsurface soil (GW = groundwater sample) dd-dd = Depth interval (for example, 00-01 = 0- to 1-foot interval, 02-03 = 2- to 3-foot interval, 2.5-3.5 – 2.5 to 3.5 feet, etc.). = month day year ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 13 QAQC indicator will follow the in the sample name only if applicable: D = dup, SP = split, FB = field blank, and TB = trip blank. Groundwater Monitoring Well Samples MWS1 ID Where: MWS1 ID = existing monitoring well sample ID from Site 1 collected on date. QAQC indicator will follow the in the sample name only if applicable: D = dup, SP = split, FB = field blank, and TB = trip blank. 2.3.2 Sample Custody Each sample will be identified on a chain-of-custody record. Information recorded will include at a minimum the site name, sampler name(s), date and time of sample collection, sample identification, number of containers for each sample, analyses requested for each sample, and signature blocks for each individual who has custody of the sample(s). Samples will be submitted to the laboratory and maintained at the laboratory under chain-of-custody. Final reports, which include all original laboratory reports and chains-of-custody, will be maintained in the City consultant’s project file system. 2.4 Analytical Methods Each site-specific QAPP will identify the analytical method requirements related to the assessment samples. Samples will be analyzed for all COCs using Test Methods for Evaluating Solid Waste, Physical/Chemical Methods (SW-846) (USEPA, 2008) by an off-site analytical laboratory. Sample analysis will be in accordance with approved USEPA analytical methods (see Table 1 for Techniques, Method Numbers, and Reporting Limits for Analysis). Reporting limits for soil and groundwater will meet or be less than the IDEQ REM IDTLs (IDEQ, 2004) and/or IDEQ petroleum rule RUSLs (IDEQ, 2011). Reporting limits for indoor air will meet or be less than the USEPA RSLs (USEPA, 2011) for residential air. Reporting limits for soil vapor (vapor intrusion pathway) for subslab and deep will meet or be less than 10 times and 100 times the USEPA RSLs (USEPA, 2011) for residential air, respectively. ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 14 Table 1. Techniques, Method Number, and Reporting Limits for Analyses Analyte Method* Reporting Limita Soil VOCs USEPA 8260B See Appendix B SVOCs USEPA 8270C See Appendix B PAHs USEPA 8270C See Appendix B Asbestos USEPA 600/R-93/116 Not Applicable b Metals c USEPA 6010C/6020A/7471B See Appendix B RCRA 8 Metals TCLP USEPA 1311/6020A See Appendix B PCBs USEPA 8082A See Appendix B Pesticides/Herbicides/Fertilizer USEPA 8151A/8081B/ 8270C See Appendix B Water VOCs USEPA 8260B See Appendix B Ethylenedibromide (EDB) USEPA 8011/2860/504.1 See Appendix B SVOCs USEPA 8270C See Appendix B PAHs USEPA 8270C See Appendix B Pesticides/Herbicides/Fertilizer USEPA 8151A/8081B//8270C See Appendix B Metals c USEPA EPA 200.8/6010C/6020A/7470A See Appendix B Nutrients Nitrogen, Phosphorous, etc.) SM 4500 NO3F/SM 4500 NH3/SM 4500 P F See Appendix B or USEPA d PCBs USEPA 8082A See Appendix B Air VOCs USEPA TO-17 VI/TO-15 See Appendix B SVOCs USEPA TO-13 See Appendix B Pesticides/Herbicides/Fertilizer USEPA TO-10A See Appendix B *Methods included here are not intended to be all inclusive. See also USEPA (2008). Site-specific QAPPs will determine appropriate methods for analytes encountered during sampling. The methods chosen must be able to meet the reporting limits. a Reporting limits for soil and groundwater will meet or be less than the IDEQ REM IDTLs (IDEQ, 2004) and/or IDEQ petroleum rule RUSLs (IDEQ, 2011). Reporting limits for indoor air will meet or be less than the USEPA Regional Screening Levels (RSLs) (USEPA, 2011) for residential air. Reporting limits for soil vapor (vapor intrusion pathway) for subslab and deep will meet or be less than 10 times and 100 times the USEPA RSLs (USEPA, 2011) for residential air, respectively. These tables can be found in Appendix B. b The asbestos analysis is performed to determine the presence or absence of asbestos-containing materials (ACMs) in the soil. If ACMs are identified in the soil a point count will be performed to determine if the asbestos concentration is greater than or less than c Site-specific QAPPs will delineate lists of metals analyzed and specify Methods for those analyses. d Some nutrients are only listed in USEPA’s National Primary Drinking Water Standards (USEPA, 2009) and not in documents found in Appendix B. Reporting limits will then meet or be less than values listed in USEPA (2009). 2.5 Quality Control Each site-specific QAPP will identify the quality control requirements related to the site-specific assessment sampling and analysis activities. ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 15 2.5.1 Field Quality Control Checks Field duplicate samples (QC samples) indicate the precision of the sampling and analysis program for detectable analytes. For solids, the field duplicate sample is one portion of a double- volume solid sample that is homogenized (mixed) before the sample containers are filled and the other portion is the primary sample. Duplicate samples for Volatile Organic Compound (VOC) analysis will be co-located with the primary sample to minimize volatilization. Duplicates are prepared by filling a second sample container with the same homogenized soil from the most recent sample area and interval, and marking the soil tag as a duplicate sample. The QC sample, along with the original sample, will be sent to the analytical laboratory. QC samples will be collected at a frequency of one per sampling event per site, or one per 20 samples, whichever is greater. For every set of samples submitted to the lab, one split will be collected and submitted to the laboratory. Split samples will be prepared during sample banking prior to shipping to the laboratory for analysis. Duplicate samples will not be made into split samples. To prepare a split sample, the soil will be thoroughly mixed by hand (while wearing disposable, single use gloves), and divided into another sample container. The new sample container and sample tag will be marked as a split sample. 2.5.2 Laboratory Quality Control Checks The laboratory QC requirements will follow the guidance outlined in the Test Methods for Evaluating Solid Waste, Physical/Chemical Methods (SW-846) (USEPA, 2008). The laboratory QC will include appropriate duplicates, laboratory control samples, matrix spikes/duplicates, method blanks, reporting limits, holding times, dilutions, etc., as outlined in the appropriate guidance document. 2.6 Instrument/Equipment Testing, Inspection, and Maintenance Each site-specific QAPP will identify requirements for instrument and equipment testing, inspection, and maintenance. Field measurement equipment used to support sampling will be tested, inspected, and maintained in accordance with the manufacturer’s specifications. Testing and maintenance activities will be recorded in the field logbook. Laboratory instrument calibration and frequency will follow the guidance outlined in the Test Methods for Evaluating Solid Waste, Physical/Chemical Methods (SW-846) (USEPA, 2008). Instruments, and the measurements made as part of the analytical methodology, will be as specified in the method, without modification. The laboratory’s quality assurance (QA) program ensures that only trained personnel perform routine maintenance on all major instruments and that repairs are performed by trained laboratory personnel or service technicians employed by the instrument manufacturer or representative. Instrument maintenance will be appropriately documented through the use of instrument logs, which will be included in the Laboratory project file. ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 16 2.7 Instrument/Equipment Calibration and Frequency Laboratory instrument calibration and frequency will follow the guidance outlined in USEPA methodology and certification requirements. Field instruments x-ray fluorescence, photoionization detector) will be calibrated in accordance with the manufacturer’s specifications, and the calibration confirmation will be documented in the field notebook. 2.8 Inspection/Acceptance of Supplies and Consumables Each site-specific QAPP will identify inspection and acceptance requirements. 2.9 Non-direct Measurements Site-specific QAPPs should identify data types needed for project implementation or decision- making that are obtained from non-measurable sources such as databases, programs, literature files, and historical databases. Site-specific QAPPs should describe the intended data, define the acceptance criteria for using the data in the project, and specify limitations on data use. 2.10 Data Management Each site-specific QAPP will address specific data management requirements. 2.10.1 Data Validation The City’s contractor will conduct an internal data validation of the Laboratory supplied data in accordance with the USEPA Guidance on Environmental Data Verification and Data Validation (USEPA, 2002a). This document contains the details on technical data review criteria such as Precision, Bias, Accuracy, Representativeness, Comparability, and Completeness. Specifics on each criterion are discussed in Section 1.4.2. The City’s contractor will conduct an internal data validation and QA/QC review of all data collected in the field and that provided from the Laboratory, documented by an internal memorandum. 2.10.2 Data Recording The City’s contractor will receive the data from the laboratory and prepare useful data tables. After the City’s contractor has conducted the internal data validation, the table will be updated with relevant data qualifiers. 2.10.3 Data Transformation The raw or validated data will be available for third party data transformation. 2.10.4 Data Transmittal Either Microsoft Excel © or Access © will be used for the transmittal and tracking of data. ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 17 2.10.5 Data Reduction No data reduction will be completed as part of this project. Third parties may reduce the data in the future for analysis and modeling. 2.10.6 Data Analysis The data may be subjected to various statistical analysis and/or modeling supporting risk analysis. In general, minimum, maximum, means, standard deviations, confidence intervals correlation with water levels, etc. may be generated. The specific statistical and/or modeling program used will be determined by the project and a full description will be documented in the final report. 2.10.7 Data Tracking This project will use Microsoft Excel © or Access © to track sample numbers and forms. 2.10.8 Data Storage and Retrieval The data will be stored in electronic form as a Microsoft Excel © or Access © document. In addition, hard copies will be available upon request. Section 3.0 Assessment and Oversight 3.1 Assessments and Response Actions Each site-specific QAPP will describe the required assessment and response actions to ensure compliance with Master QAPP requirements. Inspections will consist of, as appropriate, an evaluation of QA/QC procedures and the effectiveness of their implementation, an evaluation of work areas and activities, and a review of project documentation, to verify compliance with QAPP requirements. Additional inspection items may be added, as necessary per each site-specific QAPP, to the inspection plans by the consultant Project Manager, Environmental Scientist, or the City. Field operations assessments by the Environmental Scientist or designee may include evaluating the availability of appropriate and approved procedures; implementation of sampling procedures; calibration and operation of equipment; labeling, packaging, storage and delivery of samples; and documentation of deviations from the QAPP and nonconformance. All inspection findings that are not resolved during the course of the assessment affecting the overall quality of the project, regardless of when they are resolved, will be discussed immediately with the Project Manager. The Project Manager will ensure the necessary corrective actions are initiated and completed. 3.2 Reports to Management The data from the Phase II ESA sampling events will be made available to the City, IDEQ, and USEPA. An environmental assessment report will be prepared and delivered to the City, IDEQ, and USEPA. The report will describe sampling procedures and provide pictures and figures of ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 18 sampling locations. The report will discuss analytical precision, accuracy, representativeness, comparability, completeness, and sensitivity, and whether the analytical data meet the project DQOs. If COCs are detected above the reporting limits, a site characterization description will be provided in the report. Electronic report copies will be provided. Section 4.0 Data Validation and Usability 4.1 Data Review, Verification, and Validation Each site-specific QAPP will describe the City’s contractor’s data review, validation and verification process. Data deliverables will include a case narrative, analytical results, and laboratory QC sample results. Reduction and review of analytical data will be performed by the Laboratory under the direction of the Laboratory’s technical staff and QA Officer. Laboratory procedures for data reduction and review are discussed in the Laboratory QA Plan. The case narrative will identify whether any Laboratory QC data are outside of the Laboratory’s QC criteria. The City’s consultant will track the status of the data from time of sample collection through analysis and reporting. Once the data are reported by the Laboratory, the City’s consultant will review the sample data, case narratives, and lab and field QC data to determine the data quality and assess data usability relative to the project’s DQOs. 4.2 Verification and Validation Methods Each site-specific QAPP will describe the validation and verification methods to be used for the data evaluation that will be summarized in the Phase II ESA report. Data will be verified by reviewing chain-of-custody forms, sample preservation records, analytical holding times, case narratives, sample data as compared to QC sample data, requested turnaround time, and reporting requirements. Problems or questions will be discussed with the Laboratory by the data reviewer for resolution and/or documentation. Data will be validated upon reviewing data quality indicators, and data qualifiers will be applied to the data based on USEPA Guidance on Environmental Data Verification and Data Validation (USEPA, 2002a). 4.3 Reconciliation and User Requirements Each site-specific QAPP will describe how the City’s contractor will reconcile the data collected with the project’s DQOs as part of the data assessment process. Data assessment will involve reviewing the data with respect to project DQOs. A data usability assessment summary will be included in the Phase II report. If project DQOs are not satisfied, the City Consultant’s Project Manager will review the circumstances affecting the data usability and evaluate alternative options or resolutions. This person will notify the City and discuss the available alternatives and the recommended resolution of the issue. ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 19 Section 5.0 References 29 CFR 1910.120, “Hazardous Waste Operations and Emergency Response,” Title 29, Code of Federal Regulations, Part 1910. 40 CFR 745.65, “Lead; Identification of Dangerous Levels of Lead; Final Rule: Lead-based paint hazards,” Title 40, Code of Federal Regulations, Part 745. ASTM, 2004. D-4840-99, Standard Guide for Sampling Chain-of-Custody Procedures. City of Moscow. 2010. Brownfields Assessment Cooperative Agreement Work Plan. Idaho Department of Environmental Quality (IDEQ), 2004. Idaho Risk Evaluation Manual. April. IDEQ. 2011. IDAPA 58.01.24 - Application of Risk Based Corrective Action at Petroleum Release Sites. Moscow City Council Agenda, 2011. “Award Decision, RFQ/P Environmental Consulting Services for EPA Brownfields Assessment Grant.” August 1, 2011. Standard Methods Committee. 1992. Standard Methods for the Examination of Water and Wastewater, 18th Edition. U.S. Environmental Protection Agency (USEPA), 1992. Method 1311: Toxicity Characteristic Leaching Procedure, Revision 0. July 1992. USEPA, 1994a. Method 200.8; Determination of Trace Elements in Waters and Wastes by ICP- MS. May 1994: Revision 5.4. USEPA, 1994b. Method 7470A; Mercury in Liquid Waste (Manual Cold Vapor Technique); September 1994: Revision 1. USEPA, 1996a. Method 8151A; Chlorinated Herbicides by GC using Methylation or Pentafluorobenzylation Derivatization. December 1996: Revision 1. USEPA, 1996b. Method 8260B; Volatile Organic Compounds by Gas Chromatography/Mass Spectrometry (GC/MS). December: Revision 2. USEPA. 1999. Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air, Second Edition. USEPA/625/R-96/010b. January. USEPA. 2001. Requirements for Quality Assurance Project Plans. USEPA QA/R-5. March. USEPA. 2002. Guidance for Quality Assurance Project Plans. USEPA QA/G-5. December. USEPA, 2002a. Guidance on Environmental Data Verification and Data Validation, USEPA QA/G-8. November. USEPA. 2006. Guidance on Systematic Planning Using the Data Quality Objectives Process. USEPA QA/G-4. February. USEPA, 2007a. Method 6010C; Inductively Coupled Plasma-Atomic Emission Spectrometry. February 2007: Revision 3. USEPA, 2007b. Method 6020A; Inductively Coupled Plasma-Mass Spectrometry. February 2007: Revision 1. ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments 20 USEPA, 2007c. Method 7471B; Mercury in Solid or Semi-solid Waste (Manual Cold Vapor Technique). February 2007: Revision 2. USEPA. 2007d. Method 8081B; Organochlorine Pesticides by Gas Chromotography. February 2007: Revision 2. USEPA. 2007e. Method 8082A; Biphenols (PCBs) by Gas Chromotography. February 2007: Revision 1. USEPA, 2007f. Method 8270C Semivolatile Organic Compound by Gas Chromatography/Mass Spectrometry (GC/MS). February 2007: Revision 4. USEPA, 2008. Method SW-846; Test Methods for Evaluating Solid Waste, Physical/Chemical Methods. January 2008: Update IV, 3rd Edition. [Note: each method will have a specific year] USEPA. 2009. National Primary Drinking Water Regulations. USEPA 816-F-09-004. May. USEPA, 2011. Regional Screening Levels (RSLs) 2011. Available for download at http://www.epa.gov/reg3hwmd/risk/human/rb- concentration_table/Generic_Tables/index.htm. ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments A Appendix A Health and Safety Plan ---PAGE BREAK--- Health and Safety Plan GENERAL INFORMATION CLIENT: City of Moscow PROJECT MANAGER: SITE NAME: SITE LOCATION: Moscow, Idaho PURPOSE OF FIELD VISIT(S): DATE OF VISIT(S): Article I. Site Characteristics AREA DESCRIPTION Possible Contaminate Characteristics a) Waste Type(s) Liquid Solid Sludge Gas Dust b) Characteristics Corrosive Ignitable Radioactive Volatile Toxic Reactive _ Unknown _ Other Article II. Hazard Evaluation CHEMICAL HAZARDS Based upon review of the previous assessments, potential chemical hazards on the site include (but are not limited to) chlorinated solvents, petroleum products, asbestos, volatile organic compounds, metals, pesticides, herbicides, etc. that are commonly associated with industrial sites. Site personnel are trained in hazard recognition and will use personal protective equipment (PPE) appropriate to the potential hazards. a) Air Monitoring Direct read air monitoring equipment may be employed to screen for contaminants and toxic or flammable atmospheres prior to collecting samples if the project manager, or site supervisor, deems it appropriate. b) General Safety Hazards Sampling at the proposed sites will be unlikely to pose any unanticipated safety hazard to workers. The proposed scheme involves subsurface water sampling. Site investigators should be safety trained per site-specific Health and Safety Plans, and able to identify site hazards during site investigations. ---PAGE BREAK--- Because bore holes are not anticipated to be larger than 6 inches in diameter, there is no trenching or confined space hazard. If sampling will be performed along roads and alleys personnel will don “OSHA Orange” vests and traffic control measures will be initiated. The site supervisor will identify any site-specific hazards during pre-job safety meetings. The site supervisor will update employees if site hazards change. The most likely hazards to be encountered are those commonly encountered on many work-sites (heat stress, working around machinery, noise, etc.). All employees performing field work on this project will comply with the most current Health and Safety Manual and Health and Safety Standard Operating Procedures for their company. Each employee should be provided access to this manual. Article III. Work Practices Workers will comply with all Health and Safety Manual rules. Workers will comply with all state and federal regulations. PERSONAL PROTECTIVE EQUIPMENT The following Personal Protective Equipment (PPE) may be necessary:  A Class A, B, or C hard hat as appropriate to the site,  Steel-toed, steel shank work boots,  Hearing protection, and  Safety Glasses. DECONTAMINATION PROCEDURES a) Personnel: Before leaving the sample area, thoroughly wash hands and face with soap and water before eating, drinking, or smoking. If water is not available use pre-moistened towelettes to wash face and hands. Do not track contaminated soils and dust off-site. b) Samples After the sample containers are filled they will be sealed shut, marked with indelible marker, and any excess dirt will be wiped from the outside of the sample containers before they are stored. Sample containers will be transported in suitable sealed containers placed in stable containers that can be securely closed. c) Disposal of Materials Generated On-Site Collect trash and non-hazardous waste and place it in appropriate trash receptacles for municipal trash pick up. Potentially contaminated materials will be separated, sealed in chemically compatible containers, and labeled for appropriate off-site disposal. d) Safety Equipment and Materials Each sampling team will have access to a first aid kit, clean water, paper cups, and pre- moistened towelettes. Site supervisors will ensure appropriate safety gear is available for site ---PAGE BREAK--- operations. The site supervisor will also be equipped with a cell phone in case of an emergency requiring outside assistance. Article IV. Emergency Procedures If an injury occurs, take the following steps:  Prevent further injury and notify the site supervisor.  Initiate first aid and get medical attention for the injured person immediately.  Depending on the type and severity of the injury, call for medical attention.  Prepare an incident report.  The crew chief / site safety officer will assume charge during a medical emergency. a) Local Emergency Phone Numbers Ambulance: 911 Hospital: Gritman Medical Center (208) 882-4511(non-emergency) 700 S. Main Street 911 (emergency department) Moscow, ID 83843 Poison Control Center: [PHONE REDACTED] Sheriff/Police: 911 (208) 882-2677 (City of Moscow Police Dept. non-emergency) Fire Department: 911 (208) 882-2831 (non-emergency) b) Emergency Contacts 8 am to 5 pm: Office After hours: [NAME] (Mobile) Article V. Site Organization Map/Sketch Attached Site Secured Perimeter Identified ---PAGE BREAK--- EMERGENCY ROUTE [insert map with route to from specific site to Gritman Medical Center] Driving directions from site to 700 S. Main Street, Moscow, Idaho 83843 Total Travel Estimates: X minutes / X miles [directions] ---PAGE BREAK--- Master QAPP for the City of Moscow Brownfields Phase II Environmental Site Assessments B Appendix B IDEQ REM Initial Default Target Limits (IDTLs), IDEQ Petroleum Rule Residential Use Screening Levels (RUSLs), and USEPA Regional Screening Levels (RSLs) ---PAGE BREAK--- July 2004 - Final REM A-1 SOIL GROUNDWATER [mg/kg] [mg/L] 1,1,1,2-Tetrachloroethane 4.09E-02 GWPa GWP 2.15E-03 Ingestion Risk-Based 1,1,1-Trichloroethane 2.00E+00 GWP GWP 2.00E-01 Ingestion MCLb 1,1,2,2-Tetrachloroethane 9.15E-04 GWP GWP 2.79E-04 Ingestion Risk-Based 1,1,2-Trichloroethane 1.41E-02 GWP GWP 5.00E-03 Ingestion MCL 1,1-Dichloroethane 3.48E+00 GWP GWP 1.04E+00 Ingestion Risk-Based 1,1-Dichloroethene 3.88E-02 GWP GWP 7.00E-03 Ingestion MCL 1,2,3-Trichloropropane 2.45E-04 GWP GWP 2.79E-05 Ingestion Risk-Based 1,2,4-Trichlorobenzene 6.92E-01 Subsurface Soil Child 7.00E-02 Ingestion MCL (pseudocumene) 1.93E-01 Subsurface Soil Child 4.39E-01 Indoor Inhalation Child 1,2-Dibromo-3-chloropropane 9.75E-04 GWP GWP 2.00E-04 Ingestion MCL 1,2-Dichlorobenzene 5.25E+00 GWP GWP 6.00E-01 Ingestion MCL 1,2-Dichloroethane 7.67E-03 Subsurface Soil Child 5.00E-03 Ingestion MCL 1,2-Dichloroethene-(cis) 1.93E-01 GWP GWP 7.00E-02 Ingestion MCL 1,2-Dichloroethene-(trans) 3.65E-01 GWP GWP 1.00E-01 Ingestion MCL 1,2-Dichloropropane 8.90E-03 Subsurface Soil Child 5.00E-03 Ingestion MCL 9.48E-04 GWP GWP 6.98E-05 Ingestion Risk-Based 1.45E-01 Subsurface Soil Child 3.04E-01 Indoor Inhalation Child 1,3-Dichlorobenzene 2.29E-01 Subsurface Soil Child 9.39E-03 Ingestion Risk-Based 1,3-Dichloropropene-(cis) 2.45E-03 GWP GWP 5.59E-04 Ingestion Risk-Based 1,3-Dichloropropene-(trans) 2.45E-03 GWP GWP 5.59E-04 Ingestion Risk-Based 1,4-Dichlorobenzene 7.55E-02 Subsurface Soil Child 7.50E-02 Ingestion MCL 3.91E-06 Surficial Soil Age-Adjusted 3.00E-08 Ingestion MCL 2,4,5 TP (silvex)i 2.37E+00 GWP GWP 5.00E-02 Ingestion MCL 2,4,5-Trichlorophenol 7.38E+00 GWP GWP 1.04E+00 Ingestion Risk-Based 2,4,6-Trichlorophenol 4.36E-03 GWP GWP 1.04E-03 Ingestion Risk-Based 2,4,6-Trinitrotoluene 1.34E-02 GWP GWP 1.86E-03 Ingestion Risk-Based 2,4-Dichlorophenol 9.78E-02 GWP GWP 3.13E-02 Ingestion Risk-Based 2,4Dichlorophenoxyacetic acid 1.84E+00 GWP GWP 1.04E-01 Ingestion Risk-Based 8.19E-01 GWP GWP 2.09E-01 Ingestion Risk-Based (Dinoseb) 1.63E-01 GWP GWP 7.00E-03 Ingestion MCL Basis for Ingestion Target/ Inhalation Critical Receptorj Critical Pathway CHEMICALS OF CONCERN INITIAL DEFAULT TARGET LEVELS (IDTLs) IDTL Critical Pathway Critical Receptor IDTL ---PAGE BREAK--- July 2004 - Final REM A-2 SOIL GROUNDWATER [mg/kg] [mg/L] 2,4-Dinitrophenol 3.84E-02 GWP GWP 2.09E-02 Ingestion Risk-Based 2,4-Dinitrotoluene 2.90E-04 GWP GWP 8.22E-05 Ingestion Risk-Based 2,6-Dinitrotoluene 2.12E-04 GWP GWP 8.22E-05 Ingestion Risk-Based 2-Butanone (Methyl Ethyl Ketone) 1.18E+01 GWP GWP 6.26E+00 Ingestion Risk-Based 2-Chloronaphthalene 1.28E+02 GWP GWP 8.34E-01 Ingestion Risk-Based 2-Chlorophenol 3.65E-01 GWP GWP 5.21E-02 Ingestion Risk-Based 2-Chlorotoluene 1.56E+00 Subsurface Soil Child 2.09E-01 Ingestion Risk-Based 3.31E+00 GWP GWP 4.17E-02 Ingestion Risk-Based 1.80E+00 GWP GWP 5.21E-01 Ingestion Risk-Based 2-Nitroaniline 7.25E-02 GWP GWP 3.13E-02 Ingestion Risk-Based 3,3-Dichlorobenzidine 1.83E-03 GWP GWP 1.24E-04 Ingestion Risk-Based 3-Nitroaniline 3.18E-03 GWP GWP 1.47E-03 Ingestion Risk-Based 4- 5.45E-03 GWP GWP 3.72E-06 Ingestion Risk-Based 4-Chloroaniline 1.26E-01 GWP GWP 4.17E-02 Ingestion Risk-Based 4-Methyl-2-pentanone 1.76E+01 GWP GWP 8.97E+00 Ingestion Risk-Based 1.41E-01 GWP GWP 5.21E-02 Ingestion Risk-Based 4-Nitroaniline 2.99E-03 GWP GWP 1.47E-03 Ingestion Risk-Based 4-Nitrophenol 2.26E-01 GWP GWP 8.34E-02 Ingestion Risk-Based Acenaphthene 5.23E+01 GWP GWP 6.26E-01 Ingestion Risk-Based 7.80E+01 GWP GWP 6.26E-01 Ingestion Risk-Based Acetochlor 1.12E+00 GWP GWP 2.09E-01 Ingestion Risk-Based Acetone 1.74E+01 GWP GWP 9.39E+00 Ingestion Risk-Based Acrolein 9.65E-03 GWP GWP 5.21E-03 Ingestion Risk-Based Acrylonitrile 1.94E-04 GWP GWP 1.03E-04 Ingestion Risk-Based Alachlor 1.05E-02 GWP GWP 2.00E-03 Ingestion MCL Aldicarb 4.14E-02 GWP GWP 1.04E-02 Ingestion Risk-Based Aldrin 2.11E-02 Surficial Soil Age-Adjusted 3.29E-06 Ingestion Risk-Based Ammonia 4.15E+00 Subsurface Soil Child NA NA NA Aniline 1.96E-02 GWP GWP 9.80E-03 Ingestion Risk-Based Anthracene 1.04E+03 GWP GWP 3.13E+00 Ingestion Risk-Based Antimony 4.77E+00 GWP GWP 6.00E-03 Ingestion MCL Basis for Ingestion Target/ Inhalation Critical Receptorj Critical Pathway CHEMICALS OF CONCERN INITIAL DEFAULT TARGET LEVELS (IDTLs) IDTL Critical Pathway Critical Receptor IDTL ---PAGE BREAK--- July 2004 - Final REM A-3 SOIL GROUNDWATER [mg/kg] [mg/L] Aroclor 1016 2.33E+00 GWP GWP 7.30E-04 Ingestion Risk-Based Aroclor 1221 2.94E-03 GWP GWP 2.79E-05 Ingestion Risk-Based Aroclor 1242 3.18E-03 GWP GWP 2.79E-05 Ingestion Risk-Based Aroclor 1248 1.37E-01 GWP GWP 2.79E-05 Ingestion Risk-Based Aroclor 1254 7.40E-01 Surficial Soil Child 2.09E-04 Ingestion Risk-Based Aroclor 1260 1.47E-01 Surficial Soil Age-Adjusted 2.79E-05 Ingestion Risk-Based Arsenic 3.91E-01 Surficial Soil Age-Adjusted 1.00E-02 Ingestion MCL Atrazine 1.39E-02 GWP GWP 3.00E-03 Ingestion MCL Azobenzene 1.30E-02 GWP GWP 5.08E-04 Ingestion Risk-Based Barium 8.96E+02 GWP GWP 2.00E+00 Ingestion MCL Benzene 1.78E-02 GWP GWP 5.00E-03 Ingestion MCL Benzidine 5.37E-07 GWP GWP 2.43E-07 Ingestion Risk-Based Benzo(a)anthracene 4.22E-01 Surficial Soil Age-Adjusted 7.65E-05 Ingestion Risk-Based Benzo(a)pyrene 4.22E-02 Surficial Soil Age-Adjusted 2.00E-04 Ingestion MCL Benzo(b)fluoranthene 4.22E-01 Surficial Soil Age-Adjusted 7.65E-05 Ingestion Risk-Based Benzo(g,h,i)perylene 1.18E+03 Surficial Soil Child 3.13E-01 Ingestion Risk-Based Benzo(k)fluoranthene 4.22E+00 Surficial Soil Age-Adjusted 7.65E-04 Ingestion Risk-Based Benzoic acid 7.71E+01 GWP GWP 4.17E+01 Ingestion Risk-Based Benzyl Alcohol 6.43E+00 GWP GWP 3.13E+00 Ingestion Risk-Based Beryllium 1.63E+00 GWP GWP 4.00E-03 Ingestion MCL BHC-alphac 2.10E-04 GWP GWP 8.87E-06 Ingestion Risk-Based BHC-beta 7.51E-04 GWP GWP 3.10E-05 Ingestion Risk-Based BHC-gamma(Lindane) 8.96E-04 GWP GWP 4.30E-05 Ingestion Risk-Based Bis(2-chloroethyl)ether 1.08E-04 GWP GWP 5.08E-05 Ingestion Risk-Based Bis(2-chloroisopropyl)ether 3.11E+00 GWP GWP 4.17E-01 Ingestion Risk-Based 1.18E+01 GWP GWP 6.00E-03 Ingestion MCL Bromodichloromethane 2.68E-03 GWP GWP 9.01E-04 Ingestion Risk-Based Bromoform 2.92E-02 GWP GWP 7.07E-03 Ingestion Risk-Based Bromomethane 5.01E-02 GWP GWP 1.46E-02 Ingestion Risk-Based Butyl benzyl phthalate 5.11E+02 GWP GWP 2.09E+00 Ingestion Risk-Based Cadmium 1.35E+00 GWP GWP 5.00E-03 Ingestion MCL Basis for Ingestion Target/ Inhalation Critical Receptorj Critical Pathway CHEMICALS OF CONCERN INITIAL DEFAULT TARGET LEVELS (IDTLs) IDTL Critical Pathway Critical Receptor IDTL ---PAGE BREAK--- July 2004 - Final REM A-4 SOIL GROUNDWATER [mg/kg] [mg/L] Carbofuran 9.42E-02 GWP GWP 4.00E-02 Ingestion MCL Carbon disulfide 5.97E+00 GWP GWP 1.04E+00 Ingestion Risk-Based Carbon Tetrachloride 1.14E-02 Subsurface Soil Child 4.56E-03 Indoor Inhalation Age-Adjusted Chlordane 1.53E+00 Surficial Soil Age-Adjusted 2.00E-03 Ingestion MCL Chlorobenzene 6.18E-01 GWP GWP 1.00E-01 Ingestion MCL Chloroethane 5.33E-02 GWP GWP 1.93E-02 Ingestion Risk-Based Chloroform 5.64E-03 GWP GWP 1.80E-03 Ingestion Risk-Based Chloromethane 2.31E-02 GWP GWP 4.30E-03 Ingestion Risk-Based Chlorpyrifos 2.84E+00 GWP GWP 3.13E-02 Ingestion Risk-Based Chromium (III) total Cr 2.13E+03 GWP GWP 1.00E-01 Ingestion MCL Chromium (VI) 7.90E+00 GWP GWP 3.13E-02 Ingestion Risk-Based 3.34E+01 GWP GWP 7.65E-03 Ingestion Risk-Based Copper 9.21E+02 GWP GWP 1.30E+00 Ingestion MCL Cyanide (as Sodium Cyanide) 3.68E-01 GWP GWP 2.00E-01 Ingestion MCL Dacthal 1.58E+01 Subsurface Soil Child 1.04E-01 Ingestion Risk-Based Dalapon (2,2-dichloropropionic acid) 4.57E-01 GWP GWP 2.00E-01 Ingestion MCL DDDd 2.44E+00 Surficial Soil Age-Adjusted 2.33E-04 Ingestion Risk-Based DDEe 1.72E+00 Surficial Soil Age-Adjusted 1.64E-04 Ingestion Risk-Based DDTf 4.03E-01 GWP GWP 1.64E-04 Ingestion Risk-Based Demeton 1.29E-03 GWP GWP 4.17E-04 Ingestion Risk-Based Dibenzo(a,h)anthracene 4.22E-02 Surficial Soil Age-Adjusted 7.65E-06 Ingestion Risk-Based Dibenzofuran 6.10E+00 GWP GWP 4.17E-02 Ingestion Risk-Based Dibromochloromethane 2.02E-03 GWP GWP 6.65E-04 Ingestion Risk-Based Dichlorodifluoromethane 2.96E+00 Subsurface Soil Child 1.95E-01 Indoor Inhalation Child Dieldrin 1.33E-03 GWP GWP 3.49E-06 Ingestion Risk-Based 2.75E+01 GWP GWP 8.34E+00 Ingestion Risk-Based 2.71E+02 GWP GWP 1.04E+02 Ingestion Risk-Based Di-n-butyl phthalate 3.10E+01 GWP GWP 1.04E+00 Ingestion Risk-Based Di-n-octyl phthalate 1.83E+03 Surficial Soil Child 4.17E-01 Ingestion Risk-Based Diquat 1.09E-01 GWP GWP 2.00E-02 Ingestion MCL Basis for Ingestion Target/ Inhalation Critical Receptorj Critical Pathway CHEMICALS OF CONCERN INITIAL DEFAULT TARGET LEVELS (IDTLs) IDTL Critical Pathway Critical Receptor IDTL ---PAGE BREAK--- July 2004 - Final REM A-5 SOIL GROUNDWATER [mg/kg] [mg/L] Disulfoton 6.68E-02 GWP GWP 4.17E-04 Ingestion Risk-Based Diuron 2.16E-01 GWP GWP 2.09E-02 Ingestion Risk-Based Endosulfan 2.49E+00 GWP GWP 6.26E-02 Ingestion Risk-Based Endothall 3.35E-01 GWP GWP 1.00E-01 Ingestion MCL Endrin 3.35E-01 GWP GWP 2.00E-03 Ingestion MCL Eptam 1.39E+00 GWP GWP 2.61E-01 Ingestion Risk-Based 1.02E+01 GWP GWP 7.00E-01 Ingestion MCL Ethylene dibromide(EDB) 1.43E-04 GWP GWP 5.00E-05 Ingestion MCL Fluoranthene 3.64E+02 GWP GWP 4.17E-01 Ingestion Risk-Based Fluorene 5.48E+01 GWP GWP 4.17E-01 Ingestion Risk-Based Fluoride (as Sodium Fluoride) 7.36E+00 GWP GWP 4.00E+00 Ingestion MCL 4.48E+01 GWP GWP 7.00E-01 Ingestion MCL Heptachlor 1.06E-03 Subsurface Soil Age-Adjusted 4.00E-04 Ingestion MCL Heptachlor epoxide 2.61E-02 GWP GWP 2.00E-04 Ingestion MCL Hexachlorobenzene 4.27E-02 Subsurface Soil Age-Adjusted 1.00E-03 Ingestion MCL Hexachlorobutadiene 3.78E-02 Subsurface Soil Age-Adjusted 7.16E-04 Ingestion Risk-Based Hexachlorocyclopentadiene 1.16E-02 Subsurface Soil Child 7.01E-03 Indoor Inhalation Child Hexachloroethane 1.38E-01 GWP GWP 3.99E-03 Ingestion Risk-Based Hexazinone 8.84E-01 GWP GWP 3.44E-01 Ingestion Risk-Based Hydrogen Sulfide 2.96E-02 Subsurface Soil Child 1.75E-02 Indoor Inhalation Child Indeno(1,2,3-cd)pyrene 4.22E-01 Surficial Soil Age-Adjusted 7.65E-05 Ingestion Risk-Based Iron (as Iron Oxide) 5.76E+00 GWP GWP 3.13E+00 Ingestion Risk-Based Isophorone 1.40E-01 GWP GWP 5.88E-02 Ingestion Risk-Based Isopropylbenzene (Cumene) 3.46E+00 GWP GWP 1.04E+00 Ingestion Risk-Based Lead 4.96E+01 GWP GWP 1.50E-02 Ingestion MCL Manganese 2.23E+02 GWP GWP 2.50E-01 Ingestion Risk-Based Mercury 5.09E-03 GWP GWP 2.00E-03 Ingestion MCL 5.52E+01 GWP GWP 4.00E-02 Ingestion MCL Methylene Chloride 1.69E-02 GWP GWP 7.45E-03 Ingestion Risk-Based Metolachlor 8.43E+00 GWP GWP 1.56E+00 Ingestion Risk-Based Metribuzin 7.21E-01 GWP GWP 2.61E-01 Ingestion Risk-Based Basis for Ingestion Target/ Inhalation Critical Receptorj Critical Pathway CHEMICALS OF CONCERN INITIAL DEFAULT TARGET LEVELS (IDTLs) IDTL Critical Pathway Critical Receptor IDTL ---PAGE BREAK--- July 2004 - Final REM A-6 SOIL GROUNDWATER [mg/kg] [mg/L] MTBEg 3.64E-02 GWP GWP 1.69E-02 Ingestion Risk-Based Naphthalene 1.14E+00 Subsurface Soil Child 2.09E-01 Ingestion Risk-Based Nickel 5.91E+01 GWP GWP 2.09E-01 Ingestion Risk-Based Nitrate (as Sodium Nitrate) 1.84E+01 GWP GWP 1.00E+01 Ingestion MCL Nitrite (as Sodium Nitrite) 1.84E+00 GWP GWP 1.00E+00 Ingestion MCL Nitrobenzene 2.18E-02 GWP GWP 5.21E-03 Ingestion Risk-Based N-Nitrosodimethylamine 2.09E-06 GWP GWP 1.10E-06 Ingestion Risk-Based N-Nitrosodi-n-propylamine 1.81E-05 GWP GWP 7.98E-06 Ingestion Risk-Based N-Nitrosodiphenylamine 8.80E-02 GWP GWP 1.14E-02 Ingestion Risk-Based Oxamyl (Vydate) 3.86E-01 GWP GWP 2.00E-01 Ingestion MCL Pentachlorophenol 9.07E-03 GWP GWP 1.00E-03 Ingestion MCL Phenanthrene 7.90E+01 GWP GWP 3.13E-01 Ingestion Risk-Based Phenol 7.36E+00 GWP GWP 3.13E+00 Ingestion Risk-Based Picloram 2.95E+00 GWP GWP 5.00E-01 Ingestion MCL Prometon 7.04E-01 GWP GWP 1.56E-01 Ingestion Risk-Based Pyrene 3.59E+02 GWP GWP 3.13E-01 Ingestion Risk-Based sec-Butylbenzene 1.17E+00 Subsurface Soil Child 1.04E-01 Ingestion Risk-Based Selenium 2.03E+00 GWP GWP 5.00E-02 Ingestion MCL Silver 1.89E-01 GWP GWP 5.21E-02 Ingestion Risk-Based Simazine 1.08E-02 GWP GWP 4.00E-03 Ingestion MCL Styrene 1.83E+00 GWP GWP 1.00E-01 Ingestion MCL Terbutryn 3.21E-01 GWP GWP 1.04E-02 Ingestion Risk-Based tert-Butylbenzene 8.52E-01 Subsurface Soil Child 1.04E-01 Ingestion Risk-Based Tetrachloroethene 2.88E-02 Subsurface Soil Child 5.00E-03 Ingestion MCL Thallium 1.55E+00 GWP GWP 2.00E-03 Ingestion MCL Toluene 4.89E+00 GWP GWP 1.00E+00 Ingestion MCL Total Xylenes 1.67E+00 Subsurface Soil Child 4.34E+00 Indoor Inhalation Child Toxaphene 3.26E-01 Surficial Soil Age-Adjusted 3.00E-03 Ingestion MCL Trichloroethene 2.88E-03 Subsurface Soil Child 3.32E-03 Indoor Inhalation Age-Adjusted Trichlorofluoromethane 1.04E+01 Subsurface Soil Child 2.05E+00 Indoor Inhalation Child Vinyl Chloride 9.63E-03 GWP GWP 2.00E-03 Ingestion MCL Zinc 8.86E+02 GWP GWP 3.13E+00 Ingestion Risk-Based Basis for Ingestion Target/ Inhalation Critical Receptorj Critical Pathway CHEMICALS OF CONCERN INITIAL DEFAULT TARGET LEVELS (IDTLs) IDTL Critical Pathway Critical Receptor IDTL ---PAGE BREAK--- July 2004 - Final REM A-7 aGround Water Protection Via Soils Leaching to Groundwater bMaximum contaminant level c Benzene hexachloride d Dichloro diphenyl dichloroethylene e 1,1-Dichloro-2,2-bis(p-chlorophenyl) ethane f Dichloro diphenyl trichloroethane g Methyl tert-butyl ether h Tetrachloro di benzo-p-dioxin i 4,5,-Trichlorophenoxy propionic acid j For the ingestion pathway the source of the target level is indicated (MCL or a risk-based calculation); for the inhalation pathway the critical receptor is indicated (child or age-adjusted individual). ---PAGE BREAK--- IDAHO ADMINISTRATIVE CODE IDAPA 58.01.24 - Application of Risk Based Department of Environmental Quality Corrective Action at Petroleum Release Sites Page 11 IAC 2011 (5-8-09) 02. Table 2. Residential Use Screening Levels. Benzo(a)pyrene X X X Benzo(b)fluoranthene X X X Benzo(k)fluoranthene X X X Benz(a)anthracene X X X X X X Fluorene X X X Fluoranthene X X X Naphthalene X X X X Pyrene X X X X1 Leaded Regular Only RESIDENTIAL USE SCREENING LEVELS CHEMICALS SOIL GROUNDWATER Screening Level [mg/kg] Critical Pathway Critical Receptor Screening Level [mg/L] Critical Pathway Basis for Ingestion Target/ Inhalation Critical Receptord Benzene 1.78E-02 GWPa GWP 5.00E-03 Ingestion MCLb Toluene 4.89E+00 GWP GWP 1.00E+00 Ingestion MCL 7.10E-02 Subsurface Soil Child 1.07E-01 Indoor Inha- lation Age-Adjusted Total Xylenes 1.68E+00 Subsurface Soil Child 4.46E+00 Indoor Inha- lation Child Naphthalene 7.8E-02 Subsurface Soil Age-Adjusted 1.02E-01 Indoor Inha- lation Age-Adjusted MTBEc 6.70E-02 GWP GWP 3.10E-02 Ingestion Risk-Based Ethylene dibro- mide(EDB) 1.43E-04 GWP GWP 5.00E-05 Ingestion MCL 1,2-Dichloroethane 7.71E-03 Subsurface Soil Child 5.00E-03 Ingestion MCL CHEMICALS OF INTEREST FOR VARIOUS PETROLEUM PRODUCTS Chemical Gasoline/ JP-4/ AVGas Diesel/ Fuel Oil No. 2/ Kerosene Fuel Oil No.4 Jet Fuels (Jet A, JP-5, JP-8) x ---PAGE BREAK--- IDAHO ADMINISTRATIVE CODE IDAPA 58.01.24 - Application of Risk Based Department of Environmental Quality Corrective Action at Petroleum Release Sites Page 12 IAC 2011 (5-8-09) 03. Table 3. Default Toxicity Values for Risk Evaluation. Acenaphthene 5.23E+01 GWP GWP 6.26E-01 Ingestion Risk-Based Anthracene 1.04E+03 GWP GWP 3.13E+00 Ingestion Risk-Based Benz(a)anthracene 4.22E-01 Surficial Soil Age-Adjusted 7.65E-05 Ingestion Risk-Based Benzo(a)pyrene 4.22E-02 Surficial Soil Age-Adjusted 2.00E-04 Ingestion MCL Benzo(b)fluoran- thene 4.22E-01 Surficial Soil Age-Adjusted 7.65E-05 Ingestion Risk-Based Benzo(k)fluoran- thene 4.22E+00 Surficial Soil Age-Adjusted 7.65E-04 Ingestion Risk-Based 3.34E+01 GWP GWP 7.65E-03 Ingestion Risk-Based Fluoranthene 3.64E+02 GWP GWP 4.17E-01 Ingestion Risk-Based Fluorene 5.48E+01 GWP GWP 4.17E-01 Ingestion Risk-Based Pyrene 3.59E+02 GWP GWP 3.13E-01 Ingestion Risk-Based a. Ground Water Protection Via Petroleum Contaminants in Soil Leaching to Ground Water b. Maximum contaminant level c. Methyl tert-butyl ether d. For the ingestion pathway the source of the target level is indicated (MCL or a risk-based calculation); for the inhalation pathway the critical receptor is indicated (child or age-adjusted individual). DEFAULT TOXICITY VALUES FOR RISK EVALUATION CHEMICALS CAS Numbera Slope Factor Reference Dose Oral RAb Factor Dermal RA Factor Oral (SFo) Inhalation (SFi) Oral (RfDo) Inhalation (RfDi) (kg-day/ mg) Source (kg-day/ mg) Source (mg/kg- day) Source (mg/kg- day) Source (RAFo) (RAFd) Benzene 71-43-2 0.055 l 0.027 l 0.004 l 0.0086 l 1 0.0005 Toluene 108-88-3 NA NA 0.08 l 1.43 l 1 0.03 RESIDENTIAL USE SCREENING LEVELS CHEMICALS SOIL GROUNDWATER Screening Level [mg/kg] Critical Pathway Critical Receptor Screening Level [mg/L] Critical Pathway Basis for Ingestion Target/ Inhalation Critical Receptord x ---PAGE BREAK--- Regional Screening Level (RSL) Summary Table June 2011 SFO (mg/kg‐day)‐1 k e y IUR (ug/m3)‐1 k e y RfDo (mg/kg‐day) k e y RfCi (mg/m3) k e y v o c muta‐ gen GIABS ABS Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) key Industrial Soil (mg/kg) key Resident Air (ug/m3) key Industrial Air (ug/m3) key Tapwater (ug/L) key MCL (ug/L) Risk‐based SSL (mg/kg) MCL‐based SSL (mg/kg) 1.8E‐02 C 5.1E‐06 C 1.5E‐01 I 1 0.1 ALAR 1596‐84‐5 2.7E+01 c 9.6E+01 c 4.8E‐01 c 2.4E+00 c 3.7E+00 c 8.2E‐04 8.7E‐03 I 4.0E‐03 I 1 0.1 Acephate 30560‐19‐1 5.6E+01 2.0E+02 c* 7.7E+00 c* 1.7E‐03 2.2E‐06 I 9.0E‐03 I V 1 1.1E+05 Acetaldehyde 75‐07‐0 1.0E+01 5.2E+01 1.1E+00 5.6E+00 2.2E+00 4.5E‐04 2.0E‐02 I 1 0.1 Acetochlor 34256‐82‐1 1.2E+03 n 1.2E+04 n 7.3E+02 n 5.8E‐01 9.0E‐01 I 3.1E+01 A V 1 1.1E+05 Acetone 67‐64‐1 6.1E+04 n 6.3E+05 nms 3.2E+04 n 1.4E+05 n 2.2E+04 n 4.5E+00 3.0E‐03 P 6.0E‐02 P V 1 1.1E+05 Acetone Cyanohydrin 75‐86‐5 2.0E+02 n 2.1E+03 n 6.3E+01 n 2.6E+02 n 5.8E+01 n 1.2E‐02 6.0E‐02 I V 1 1.3E+05 Acetonitrile 75‐05‐8 8.7E+02 n 3.7E+03 n 6.3E+01 n 2.6E+02 n 1.3E+02 n 2.6E‐02 1.0E‐01 I V 1 2.5E+03 Acetophenone 98‐86‐2 7.8E+03 ns 1.0E+05 nms 3.7E+03 n 1.1E+00 3.8E+00 C 1.3E‐03 C 1 0.1 Acetylaminofluorene, 2‐ 53‐96‐3 1.3E‐01 c 4.5E‐01 c 1.9E‐03 c 9.4E‐03 c 1.8E‐02 c 8.2E‐05 5.0E‐04 I 2.0E‐05 I V 1 2.3E+04 Acrolein 107‐02‐8 1.5E‐01 n 6.5E‐01 n 2.1E‐02 n 8.8E‐02 n 4.2E‐02 n 8.4E‐06 5.0E‐01 I 1.0E‐04 I 2.0E‐03 I 6.0E‐03 I 1 0.1 Acrylamide 79‐06‐1 9.7E‐01 c 3.4E+00 c 2.4E‐02 c 1.2E‐01 c 1.3E‐01 c 2.8E‐05 5.0E‐01 I 1.0E‐03 I 1 0.1 Acrylic Acid 79‐10‐7 3.0E+04 n 2.9E+05 nm 1.0E+00 n 4.4E+00 n 1.8E+04 n 3.7E+00 5.4E‐01 I 6.8E‐05 I 4.0E‐02 A 2.0E‐03 I V 1 1.1E+04 Acrylonitrile 107‐13‐1 2.4E‐01 c* 1.2E+00 c* 3.6E‐02 c* 1.8E‐01 c* 4.5E‐02 c* 9.9E‐06 6.0E‐03 P 1 0.1 Adiponitrile 111‐69‐3 8.5E+06 nm 3.6E+07 nm 6.3E+00 n 2.6E+01 n 5.6E‐02 C 1.0E‐02 I 1 0.1 Alachlor 15972‐60‐8 8.7E+00 c* 3.1E+01 c 1.2E+00 c 2.0E+00 9.9E‐04 1.6E‐03 1.0E‐03 I 1 0.1 Aldicarb 116‐06‐3 6.1E+01 n 6.2E+02 n 3.7E+01 n 9.1E‐03 1.0E‐03 I 1 0.1 Aldicarb Sulfone 1646‐88‐4 6.1E+01 n 6.2E+02 n 3.7E+01 n 8.0E‐03 1.7E+01 I 4.9E‐03 I 3.0E‐05 I 1 0.1 Aldrin 309‐00‐2 2.9E‐02 c* 1.0E‐01 c 5.0E‐04 c 2.5E‐03 c 4.0E‐03 c 6.5E‐04 2.5E‐01 I 1 0.1 Ally 74223‐64‐6 1.5E+04 n 1.5E+05 nm 9.1E+03 n 3.5E+00 5.0E‐03 I 1.0E‐04 X 1 0.1 Allyl Alcohol 107‐18‐6 3.0E+02 n 3.1E+03 n 1.0E‐01 n 4.4E‐01 n 1.8E+02 n 3.7E‐02 2.1E‐02 C 6.0E‐06 C 1.0E‐03 I V 1 1.4E+03 Allyl Chloride 107‐05‐1 6.8E‐01 3.4E+00 4.1E‐01 2.0E+00 6.5E‐01 2.1E‐04 1.0E+00 P 5.0E‐03 P 1 Aluminum 7429‐90‐5 7.7E+04 n 9.9E+05 nm 5.2E+00 n 2.2E+01 n 3.7E+04 n 5.5E+04 4.0E‐04 I 1 Aluminum Phosphide 20859‐73‐8 3.1E+01 n 4.1E+02 n 1.5E+01 n 3.0E‐04 I 1 0.1 Amdro 67485‐29‐4 1.8E+01 n 1.8E+02 n 1.1E+01 n 3.9E+03 9.0E‐03 I 1 0.1 Ametryn 834‐12‐8 5.5E+02 n 5.5E+03 n 3.3E+02 n 3.5E‐01 2.1E+01 C 6.0E‐03 C 1 0.1 Aminobiphenyl, 4‐ 92‐67‐1 2.3E‐02 c 8.2E‐02 c 4.1E‐04 c 2.0E‐03 c 3.2E‐03 c 1.6E‐05 8.0E‐02 P 1 0.1 Aminophenol, m‐ 591‐27‐5 4.9E+03 n 4.9E+04 n 2.9E+03 n 1.1E+00 2.0E‐02 P 1 0.1 Aminophenol, p‐ 123‐30‐8 1.2E+03 n 1.2E+04 n 7.3E+02 n 2.8E‐01 2.5E‐03 I 1 0.1 Amitraz 33089‐61‐1 1.5E+02 n 1.5E+03 n 9.1E+01 n 4.7E+01 1.0E‐01 I 1 Ammonia 7664‐41‐7 1.0E+02 n 4.4E+02 n 2.0E‐01 I 1 Ammonium Sulfamate 7773‐06‐0 1.6E+04 n 2.0E+05 nm 7.3E+03 n 5.7E‐03 I 1.6E‐06 C 7.0E‐03 P 1.0E‐03 I 1 0.1 Aniline 62‐53‐3 8.5E+01 3.0E+02 c* 1.0E+00 n 4.4E+00 n 1.2E+01 c* 4.0E‐03 4.0E‐02 P 2.0E‐03 X 1 0.1 Anthraquinone, 9,10‐ 84‐65‐1 1.2E+01 c* 4.3E+01 c* 1.7E+00 c* 4.0E‐04 I 0.15 Antimony (metallic) 7440‐36‐0 3.1E+01 n 4.1E+02 n 1.5E+01 n 6.0E+00 6.6E‐01 2.7E‐01 5.0E‐04 H 0.15 Antimony Pentoxide 1314‐60‐9 3.9E+01 n 5.1E+02 n 1.8E+01 n 9.0E‐04 H 0.15 Antimony Potassium Tartrate 11071‐15‐1 7.0E+01 n 9.2E+02 n 3.3E+01 n 4.0E‐04 H 0.15 Antimony Tetroxide 1332‐81‐6 3.1E+01 n 4.1E+02 n 1.5E+01 n 2.0E‐04 I 0.15 Antimony Trioxide 1309‐64‐4 2.8E+05 nm 1.2E+06 nm 2.1E‐01 n 8.8E‐01 n 1.3E‐02 I 1 0.1 Apollo 74115‐24‐5 7.9E+02 n 8.0E+03 n 4.7E+02 n 2.9E+01 2.5E‐02 I 7.1E‐06 I 5.0E‐02 H 1 0.1 Aramite 140‐57‐8 1.9E+01 c 6.9E+01 c 3.4E‐01 c 1.7E+00 c 2.7E+00 c 3.0E‐02 1.5E+00 I 4.3E‐03 I 3.0E‐04 I 1.5E‐05 C 1 0.03 Arsenic, Inorganic 7440‐38‐2 3.9E‐01 c* 1.6E+00 c 5.7E‐04 c* 2.9E‐03 c* 4.5E‐02 c 1.0E+01 1.3E‐03 2.9E‐01 3.5E‐06 C 5.0E‐05 I 1 Arsine 7784‐42‐1 2.7E‐01 n 3.6E+00 n 5.2E‐02 n 2.2E‐01 n 1.3E‐01 n 9.0E‐03 I 1 0.1 Assure 76578‐14‐8 5.5E+02 n 5.5E+03 n 3.3E+02 n 5.1E+00 5.0E‐02 I 1 0.1 Asulam 3337‐71‐1 3.1E+03 n 3.1E+04 n 1.8E+03 n 4.7E‐01 2.3E‐01 C 3.5E‐02 I 1 0.1 Atrazine 1912‐24‐9 2.1E+00 c 7.5E+00 c 2.9E‐01 c 3.0E+00 1.9E‐04 1.9E‐03 8.8E‐01 C 2.5E‐04 C 1 0.1 Auramine 492‐80‐8 5.5E‐01 c 2.0E+00 c 9.7E‐03 c 4.9E‐02 c 7.6E‐02 c 7.0E‐04 4.0E‐04 I 1 0.1 Avermectin B1 65195‐55‐3 2.4E+01 n 2.5E+02 n 1.5E+01 n 2.6E+01 1.1E‐01 I 3.1E‐05 I V 1 Azobenzene 103‐33‐3 5.1E+00 c 2.3E+01 c 7.8E‐02 c 4.0E‐01 c 1.2E‐01 c 9.6E‐04 2.0E‐01 I 5.0E‐04 H 0.07 Barium 7440‐39‐3 1.5E+04 n 1.9E+05 nm 5.2E‐01 n 2.2E+00 n 7.3E+03 n 2.0E+03 3.0E+02 8.2E+01 4.0E‐03 I 1 0.1 Baygon 114‐26‐1 2.4E+02 n 2.5E+03 n 1.5E+02 n 4.7E‐02 3.0E‐02 I 1 0.1 Bayleton 43121‐43‐3 1.8E+03 n 1.8E+04 n 1.1E+03 n 8.7E‐01 2.5E‐02 I 1 0.1 Baythroid 68359‐37‐5 1.5E+03 n 1.5E+04 n 9.1E+02 n 2.4E+02 3.0E‐01 I 1 0.1 Benefin 1861‐40‐1 1.8E+04 n 1.8E+05 nm 1.1E+04 n 3.6E+02 5.0E‐02 I 1 0.1 Benomyl 17804‐35‐2 3.1E+03 n 3.1E+04 n 1.8E+03 n 1.6E+00 3.0E‐02 I 1 0.1 Bentazon 25057‐89‐0 1.8E+03 n 1.8E+04 n 1.1E+03 n 2.4E‐01 1.0E‐01 I V 1 1.2E+03 Benzaldehyde 100‐52‐7 7.8E+03 ns 1.0E+05 nms 3.7E+03 n 8.1E‐01 5.5E‐02 I 7.8E‐06 I 4.0E‐03 I 3.0E‐02 I V 1 1.8E+03 Benzene 71‐43‐2 1.1E+00 c* 5.4E+00 c* 3.1E‐01 c 1.6E+00 c* 4.1E‐01 c 5.0E+00 2.1E‐04 2.6E‐03 2.0E‐04 X 1 0.1 Benzenediamine‐2‐methyl sulfate, 1,4‐ 6369‐59‐1 1.2E+01 n 1.2E+02 n 7.3E+00 n 1.0E‐03 P V 1 1.3E+03 Benzenethiol 108‐98‐5 7.8E+01 n 1.0E+03 n 3.7E+01 n 2.4E‐02 2.3E+02 I 6.7E‐02 I 3.0E‐03 I M 1 0.1 Benzidine 92‐87‐5 5.0E‐04 c 7.5E‐03 c 1.4E‐05 c 1.8E‐04 c 9.4E‐05 c 2.4E‐07 4.0E+00 I 1 0.1 Benzoic Acid 65‐85‐0 2.4E+05 nm 2.5E+06 nm 1.5E+05 n 3.4E+01 1.3E+01 I V 1 3.2E+02 Benzotrichloride 98‐07‐7 4.9E‐02 c 2.2E‐01 c 5.2E‐03 c 1.1E‐05 1.0E‐01 P 1 0.1 Benzyl Alcohol 100‐51‐6 6.1E+03 n 6.2E+04 n 3.7E+03 n 8.9E‐01 1.7E‐01 I 4.9E‐05 C 2.0E‐03 P 1.0E‐03 P V 1 1.5E+03 Benzyl Chloride 100‐44‐7 1.0E+00 c* 4.9E+00 c* 5.0E‐02 c* 2.5E‐01 c* 7.9E‐02 c* 8.7E‐05 2.4E‐03 I 2.0E‐03 I 2.0E‐05 I 0.007 Beryllium and compounds 7440‐41‐7 1.6E+02 n 2.0E+03 n 1.0E‐03 c* 5.1E‐03 c* 7.3E+01 n 4.0E+00 5.8E+01 3.2E+00 Key: I = IRIS; P = A = ATSDR; C = Cal EPA; X = Appendix; H = HEAST; J = New Jersey; Y = New York; O = EPA Office of Water; E = Environmental Criteria and Assessment Office; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ; c = cancer; * = where: n SL < 100X c SL; = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit (See User Guide); s = Concentration may exceed Csat (See User Guide); SSL values are based on DAF=1 Toxicity and Chemical‐specific Information Contaminant Screening Levels Protection of Ground Water SSLs Page 1 of 12 ---PAGE BREAK--- Regional Screening Level (RSL) Summary Table June 2011 SFO (mg/kg‐day)‐1 k e y IUR (ug/m3)‐1 k e y RfDo (mg/kg‐day) k e y RfCi (mg/m3) k e y v o c muta‐ gen GIABS ABS Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) key Industrial Soil (mg/kg) key Resident Air (ug/m3) key Industrial Air (ug/m3) key Tapwater (ug/L) key MCL (ug/L) Risk‐based SSL (mg/kg) MCL‐based SSL (mg/kg) Key: I = IRIS; P = A = ATSDR; C = Cal EPA; X = Appendix; H = HEAST; J = New Jersey; Y = New York; O = EPA Office of Water; E = Environmental Criteria and Assessment Office; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ; c = cancer; * = where: n SL < 100X c SL; = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit (See User Guide); s = Concentration may exceed Csat (See User Guide); SSL values are based on DAF=1 Toxicity and Chemical‐specific Information Contaminant Screening Levels Protection of Ground Water SSLs 1.0E‐04 I 1 0.1 Bidrin 141‐66‐2 6.1E+00 n 6.2E+01 n 3.7E+00 n 8.5E‐04 9.0E‐03 P 1 0.1 Bifenox 42576‐02‐3 5.5E+02 n 5.5E+03 n 3.3E+02 n 2.5E+00 1.5E‐02 I 1 0.1 Biphenthrin 82657‐04‐3 9.2E+02 n 9.2E+03 n 5.5E+02 n 2.5E+03 8.0E‐03 X 5.0E‐02 I 4.0E‐04 X V 1 2.1E+02 Biphenyl, 1,1'‐ 92‐52‐4 5.1E+01 n 2.1E+02 n 4.2E‐01 n 1.8E+00 n 8.3E‐01 n 8.7E‐03 7.0E‐02 H 1.0E‐05 H 4.0E‐02 I V 1 1.0E+03 Bis(2‐chloro‐1‐methylethyl) ether 108‐60‐1 4.6E+00 c 2.2E+01 c 2.4E‐01 c 1.2E+00 c 3.2E‐01 c 1.2E‐04 3.0E‐03 P 1 0.1 Bis(2‐chloroethoxy)methane 111‐91‐1 1.8E+02 n 1.8E+03 n 1.1E+02 n 2.5E‐02 1.1E+00 I 3.3E‐04 I V 1 5.1E+03 Bis(2‐chloroethyl)ether 111‐44‐4 2.1E‐01 c 1.0E+00 c 7.4E‐03 c 3.7E‐02 c 1.2E‐02 c 3.1E‐06 1.4E‐02 I 2.4E‐06 C 2.0E‐02 I 1 0.1 117‐81‐7 3.5E+01 c* 1.2E+02 c 1.0E+00 c 5.1E+00 c 4.8E+00 c 6.0E+00 1.1E+00 1.4E+00 2.2E+02 I 6.2E‐02 I V 1 4.2E+03 Bis(chloromethyl)ether 542‐88‐1 7.7E‐05 c 3.9E‐04 c 3.9E‐05 c 2.0E‐04 c 6.2E‐05 c 1.5E‐08 5.0E‐02 I 1 0.1 Bisphenol A 80‐05‐7 3.1E+03 n 3.1E+04 n 1.8E+03 n 1.4E+02 2.0E‐01 I 2.0E‐02 H 1 Boron And Borates Only 7440‐42‐8 1.6E+04 n 2.0E+05 nm 2.1E+01 n 8.8E+01 n 7.3E+03 n 2.3E+01 4.0E‐02 C 1.3E‐02 C 1 Boron Trifluoride 7637‐07‐2 3.1E+03 n 4.1E+04 n 1.4E+01 n 5.7E+01 n 1.5E+03 n 7.0E‐01 I 4.0E‐03 I 1 Bromate 15541‐45‐4 9.1E‐01 c 4.1E+00 c 9.6E‐02 c 1.0E+01 7.4E‐04 7.7E‐02 2.0E+00 X 6.0E‐04 X V 1 2.4E+03 Bromo‐2‐chloroethane, 1‐ 107‐04‐0 2.4E‐02 c 1.2E‐01 c 4.1E‐03 c 2.0E‐02 c 6.5E‐03 c 1.8E‐06 8.0E‐03 I 6.0E‐02 I V 1 6.8E+02 Bromobenzene 108‐86‐1 3.0E+02 n 1.8E+03 ns 6.3E+01 n 2.6E+02 n 8.8E+01 n 5.9E‐02 4.0E‐02 X V 1 4.0E+03 Bromochloromethane 74‐97‐5 1.6E+02 n 6.8E+02 n 4.2E+01 n 1.8E+02 n 8.3E+01 n 2.1E‐02 6.2E‐02 I 3.7E‐05 C 2.0E‐02 I V 1 9.3E+02 Bromodichloromethane 75‐27‐4 2.7E‐01 c 1.4E+00 c 6.6E‐02 c 3.3E‐01 c 1.2E‐01 c 8.0E+01(F) 3.2E‐05 2.2E‐02 7.9E‐03 I 1.1E‐06 I 2.0E‐02 I 1 0.1 Bromoform 75‐25‐2 6.2E+01 c* 2.2E+02 c* 2.2E+00 c 1.1E+01 c 8.5E+00 c* 8.0E+01(F) 2.3E‐03 2.1E‐02 1.4E‐03 I 5.0E‐03 I V 1 3.6E+03 Bromomethane 74‐83‐9 7.3E+00 n 3.2E+01 n 5.2E+00 n 2.2E+01 n 8.7E+00 n 2.2E‐03 5.0E‐03 H 1 0.1 Bromophos 2104‐96‐3 3.1E+02 n 3.1E+03 n 1.8E+02 n 7.7E‐01 2.0E‐02 I 1 0.1 Bromoxynil 1689‐84‐5 1.2E+03 n 1.2E+04 n 7.3E+02 n 6.3E‐01 2.0E‐02 I 1 0.1 Bromoxynil Octanoate 1689‐99‐2 1.2E+03 n 1.2E+04 n 7.3E+02 n 6.4E+00 3.4E+00 C 3.0E‐05 I 2.0E‐03 I V 1 6.7E+02 Butadiene, 1,3‐ 106‐99‐0 5.4E‐02 c* 2.6E‐01 c* 8.1E‐02 c* 4.1E‐01 c* 1.8E‐02 c 9.7E‐06 1.0E‐01 I 1 0.1 Butanol, N‐ 71‐36‐3 6.1E+03 n 6.2E+04 n 3.7E+03 n 7.6E‐01 1.9E‐03 P 2.0E‐01 I 1 0.1 Butyl Benzyl 85‐68‐7 2.6E+02 c* 9.1E+02 c 3.5E+01 c 5.1E‐01 2.0E+00 P 3.0E+01 P 1 0.1 Butyl alcohol, sec‐ 78‐92‐2 1.2E+05 nm 1.2E+06 nm 3.1E+04 n 1.3E+05 n 7.3E+04 n 1.5E+01 5.0E‐02 I 1 0.1 Butylate 2008‐41‐5 3.1E+03 n 3.1E+04 n 1.8E+03 n 1.8E+00 2.0E‐04 C 5.7E‐08 C 1 0.1 Butylated hydroxyanisole 25013‐16‐5 2.4E+03 c 8.6E+03 c 4.3E+01 c 2.2E+02 c 3.4E+02 c 6.3E‐01 5.0E‐02 P V 1 1.1E+02 Butylbenzene, n‐ 104‐51‐8 3.9E+03 ns 5.1E+04 ns 1.8E+03 n 5.9E+00 1.0E+00 I 1 0.1 85‐70‐1 6.1E+04 n 6.2E+05 nm 3.7E+04 n 8.3E+02 2.0E‐02 A 1 0.1 Cacodylic Acid 75‐60‐5 1.2E+03 n 1.2E+04 n 7.3E+02 n 1.8E‐03 I 1.0E‐03 I 2.0E‐05 C 0.025 0.001 Cadmium (Diet) 7440‐43‐9 7.0E+01 n 8.0E+02 n 1.8E‐03 I 5.0E‐04 I 2.0E‐05 C 0.05 0.001 Cadmium (Water) 7440‐43‐9 1.4E‐03 c* 6.8E‐03 c* 1.8E+01 n 5.0E+00 1.4E+00 3.8E‐01 5.0E‐01 I 1 0.1 Caprolactam 105‐60‐2 3.1E+04 n 3.1E+05 nm 1.8E+04 n 4.5E+00 1.5E‐01 C 4.3E‐05 C 2.0E‐03 I 1 0.1 Captafol 2425‐06‐1 3.2E+00 c* 1.1E+01 c 5.7E‐02 c 2.9E‐01 c 4.5E‐01 c 7.9E‐04 2.3E‐03 C 6.6E‐07 C 1.3E‐01 I 1 0.1 Captan 133‐06‐2 2.1E+02 c* 7.5E+02 c 3.7E+00 c 1.9E+01 c 2.9E+01 c 2.1E‐02 1.0E‐01 I 1 0.1 Carbaryl 63‐25‐2 6.1E+03 n 6.2E+04 n 3.7E+03 n 3.3E+00 5.0E‐03 I 1 0.1 Carbofuran 1563‐66‐2 3.1E+02 n 3.1E+03 n 1.8E+02 n 4.0E+01 7.1E‐02 1.6E‐02 1.0E‐01 I 7.0E‐01 I V 1 7.4E+02 Carbon Disulfide 75‐15‐0 8.2E+02 ns 3.7E+03 ns 7.3E+02 n 3.1E+03 n 1.0E+03 n 3.1E‐01 7.0E‐02 I 6.0E‐06 I 4.0E‐03 I 1.0E‐01 I V 1 4.6E+02 Carbon Tetrachloride 56‐23‐5 6.1E‐01 c 3.0E+00 c 4.1E‐01 c 2.0E+00 c 4.4E‐01 c 5.0E+00 1.7E‐04 1.9E‐03 1.0E‐02 I 1 0.1 Carbosulfan 55285‐14‐8 6.1E+02 n 6.2E+03 n 3.7E+02 n 8.8E+00 1.0E‐01 I 1 0.1 Carboxin 5234‐68‐4 6.1E+03 n 6.2E+04 n 3.7E+03 n 2.0E+00 9.0E‐04 I 1 Ceric oxide 1306‐38‐3 1.3E+06 nm 5.4E+06 nm 9.4E‐01 n 3.9E+00 n 1.0E‐01 I 1 0.1 Chloral Hydrate 302‐17‐0 6.1E+03 n 6.2E+04 n 3.7E+03 n 7.4E‐01 1.5E‐02 I 1 0.1 Chloramben 133‐90‐4 9.2E+02 n 9.2E+03 n 5.5E+02 n 1.3E‐01 4.0E‐01 H 1 0.1 Chloranil 118‐75‐2 1.2E+00 c 4.3E+00 c 1.7E‐01 c 1.4E‐04 3.5E‐01 I 1.0E‐04 I 5.0E‐04 I 7.0E‐04 I 1 0.04 Chlordane 12789‐03‐6 1.6E+00 c* 6.5E+00 c* 2.4E‐02 c* 1.2E‐01 c* 1.9E‐01 c* 2.0E+00 1.3E‐02 1.4E‐01 1.0E+01 I 4.6E‐03 C 3.0E‐04 I 1 0.1 Chlordecone (Kepone) 143‐50‐0 4.9E‐02 c 1.7E‐01 c 5.3E‐04 c 2.7E‐03 c 6.7E‐03 c 2.4E‐04 7.0E‐04 A 1 0.1 Chlorfenvinphos 470‐90‐6 4.3E+01 n 4.3E+02 n 2.6E+01 n 7.0E‐02 2.0E‐02 I 1 0.1 Chlorimuron, Ethyl‐ 90982‐32‐4 1.2E+03 n 1.2E+04 n 7.3E+02 n 2.5E‐01 1.0E‐01 I 1.5E‐04 A 1 Chlorine 7782‐50‐5 7.5E+03 n 9.1E+04 n 1.5E‐01 n 6.4E‐01 n 3.7E+03 n 1.6E+00 3.0E‐02 I 2.0E‐04 I 1 Chlorine Dioxide 10049‐04‐4 2.3E+03 n 3.0E+04 n 2.1E‐01 n 8.8E‐01 n 1.1E+03 n 3.0E‐02 I 1 Chlorite (Sodium Salt) 7758‐19‐2 2.3E+03 n 3.1E+04 n 1.1E+03 n 1.0E+03 5.0E+01 I V 1 1.2E+03 Chloro‐1,1‐difluoroethane, 1‐ 75‐68‐3 5.8E+04 ns 2.4E+05 nms 5.2E+04 n 2.2E+05 n 1.0E+05 n 5.2E+01 3.0E‐04 I 2.0E‐02 H 2.0E‐02 I V 1 7.5E+02 Chloro‐1,3‐butadiene, 2‐ 126‐99‐8 9.4E‐03 c 4.7E‐02 c 8.1E‐03 c 4.1E‐02 c 1.6E‐02 c 8.5E‐06 4.6E‐01 H 1 0.1 Chloro‐2‐methylaniline HCl, 4‐ 3165‐93‐3 1.1E+00 c 3.7E+00 c 1.5E‐01 c 8.3E‐05 1.0E‐01 P 7.7E‐05 C 3.0E‐03 X 1 0.1 Chloro‐2‐methylaniline, 4‐ 95‐69‐2 4.9E+00 c* 1.7E+01 c 3.2E‐02 c 1.6E‐01 c 6.7E‐01 c 3.8E‐04 2.7E‐01 X 1 0.1 Chloroacetaldehyde, 2‐ 107‐20‐0 1.8E+00 c 6.4E+00 c 2.5E‐01 c 5.0E‐05 2.0E‐03 H 1 0.1 Chloroacetic Acid 79‐11‐8 1.2E+02 n 1.2E+03 n 7.3E+01 n 6.0E+01 1.5E‐02 1.2E‐02 3.0E‐05 I 1 0.1 Chloroacetophenone, 2‐ 532‐27‐4 4.3E+04 n 1.8E+05 nm 3.1E‐02 n 1.3E‐01 n 2.0E‐01 P 4.0E‐03 I 1 0.1 Chloroaniline, p‐ 106‐47‐8 2.4E+00 c 8.6E+00 c 3.4E‐01 c 1.4E‐04 2.0E‐02 I 5.0E‐02 P V 1 7.6E+02 Chlorobenzene 108‐90‐7 2.9E+02 n 1.4E+03 ns 5.2E+01 n 2.2E+02 n 9.1E+01 n 1.0E+02 6.2E‐02 6.8E‐02 1.1E‐01 C 3.1E‐05 C 2.0E‐02 I 1 0.1 Chlorobenzilate 510‐15‐6 4.4E+00 c 1.6E+01 c 7.8E‐02 c 4.0E‐01 c 6.1E‐01 c 2.0E‐03 3.0E‐02 X 1 0.1 Chlorobenzoic Acid, p‐ 74‐11‐3 1.8E+03 n 1.8E+04 n 1.1E+03 n 2.8E‐01 3.0E‐03 P 3.0E‐01 P V 1 1.2E+02 Chlorobenzotrifluoride, 4‐ 98‐56‐6 2.1E+02 ns 2.3E+03 ns 3.1E+02 n 1.3E+03 n 9.3E+01 n 3.3E‐01 Page 2 of 12 ---PAGE BREAK--- Regional Screening Level (RSL) Summary Table June 2011 SFO (mg/kg‐day)‐1 k e y IUR (ug/m3)‐1 k e y RfDo (mg/kg‐day) k e y RfCi (mg/m3) k e y v o c muta‐ gen GIABS ABS Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) key Industrial Soil (mg/kg) key Resident Air (ug/m3) key Industrial Air (ug/m3) key Tapwater (ug/L) key MCL (ug/L) Risk‐based SSL (mg/kg) MCL‐based SSL (mg/kg) Key: I = IRIS; P = A = ATSDR; C = Cal EPA; X = Appendix; H = HEAST; J = New Jersey; Y = New York; O = EPA Office of Water; E = Environmental Criteria and Assessment Office; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ; c = cancer; * = where: n SL < 100X c SL; = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit (See User Guide); s = Concentration may exceed Csat (See User Guide); SSL values are based on DAF=1 Toxicity and Chemical‐specific Information Contaminant Screening Levels Protection of Ground Water SSLs 4.0E‐02 P V 1 7.3E+02 Chlorobutane, 1‐ 109‐69‐3 3.1E+03 ns 4.1E+04 ns 1.5E+03 n 5.9E‐01 5.0E+01 I V 1 1.7E+03 Chlorodifluoromethane 75‐45‐6 5.3E+04 ns 2.2E+05 nms 5.2E+04 n 2.2E+05 n 1.0E+05 n 4.3E+01 3.1E‐02 C 2.3E‐05 I 1.0E‐02 I 9.8E‐02 A V 1 2.5E+03 Chloroform 67‐66‐3 2.9E‐01 c 1.5E+00 c 1.1E‐01 c 5.3E‐01 c 1.9E‐01 c 8.0E+01(F) 5.3E‐05 2.2E‐02 9.0E‐02 I V 1 1.3E+03 Chloromethane 74‐87‐3 1.2E+02 n 5.0E+02 n 9.4E+01 n 3.9E+02 n 1.9E+02 n 4.9E‐02 2.4E+00 C 6.9E‐04 C V 1 2.6E+04 Chloromethyl Methyl Ether 107‐30‐2 1.9E‐02 c 9.4E‐02 c 3.5E‐03 c 1.8E‐02 c 5.6E‐03 c 1.2E‐06 8.0E‐02 I V 1 1.8E+02 Chloronaphthalene, Beta‐ 91‐58‐7 6.3E+03 ns 8.2E+04 ns 2.9E+03 n 1.5E+01 3.0E‐01 P 3.0E‐03 P 1.0E‐05 X 1 0.1 Chloronitrobenzene, o‐ 88‐73‐3 1.6E+00 c 5.7E+00 c 1.0E‐02 n 4.4E‐02 n 2.2E‐01 c 2.1E‐04 6.3E‐03 P 1.0E‐03 P 6.0E‐04 P 1 0.1 Chloronitrobenzene, p‐ 100‐00‐5 6.1E+01 n 2.7E+02 6.3E‐01 n 2.6E+00 n 1.1E+01 9.9E‐03 5.0E‐03 I V 1 2.2E+04 Chlorophenol, 2‐ 95‐57‐8 3.9E+02 n 5.1E+03 n 1.8E+02 n 1.5E‐01 4.0E‐04 C V 1 6.2E+02 Chloropicrin 76‐06‐2 2.1E+00 n 8.8E+00 n 4.2E‐01 n 1.8E+00 n 8.3E‐01 n 2.5E‐04 3.1E‐03 C 8.9E‐07 C 1.5E‐02 I 1 0.1 Chlorothalonil 1897‐45‐6 1.6E+02 5.6E+02 c* 2.7E+00 c 1.4E+01 c 2.2E+01 c* 4.9E‐02 2.0E‐02 I V 1 9.1E+02 Chlorotoluene, o‐ 95‐49‐8 1.6E+03 ns 2.0E+04 ns 7.3E+02 n 7.1E‐01 2.0E‐02 X V 1 2.5E+02 Chlorotoluene, p‐ 106‐43‐4 1.6E+03 ns 2.0E+04 ns 7.3E+02 n 7.1E‐01 2.4E+02 C 6.9E‐02 C 1 0.1 Chlorozotocin 54749‐90‐5 2.0E‐03 c 7.2E‐03 c 3.5E‐05 c 1.8E‐04 c 2.8E‐04 c 6.2E‐08 2.0E‐01 I 1 0.1 Chlorpropham 101‐21‐3 1.2E+04 n 1.2E+05 nm 7.3E+03 n 6.6E+00 3.0E‐03 I 1 0.1 Chlorpyrifos 2921‐88‐2 1.8E+02 n 1.8E+03 n 1.1E+02 n 1.6E+00 1.0E‐02 H 1 0.1 Chlorpyrifos Methyl 5598‐13‐0 6.1E+02 n 6.2E+03 n 3.7E+02 n 1.7E+00 5.0E‐02 I 1 0.1 Chlorsulfuron 64902‐72‐3 3.1E+03 n 3.1E+04 n 1.8E+03 n 1.5E+00 8.0E‐04 H 1 0.1 Chlorthiophos 60238‐56‐4 4.9E+01 n 4.9E+02 n 2.9E+01 n 7.5E‐01 1.5E+00 I 0.013 Chromium(III), Insoluble Salts 16065‐83‐1 1.2E+05 nm 1.5E+06 nm 5.5E+04 n 9.9E+07 5.0E‐01 J 8.4E‐02 S 3.0E‐03 I 1.0E‐04 I M 0.025 Chromium(VI) 18540‐29‐9 2.9E‐01 c 5.6E+00 c 1.1E‐05 c 1.5E‐04 c 4.3E‐02 c 8.3E‐04 0.013 Chromium, Total 7440‐47‐3 1.0E+02 1.8E+05 9.0E‐03 P 3.0E‐04 P 6.0E‐06 P 1 Cobalt 7440‐48‐4 2.3E+01 n 3.0E+02 n 2.7E‐04 c* 1.4E‐03 c* 1.1E+01 n 4.9E‐01 6.2E‐04 I M 1 0.1 Coke Oven Emissions 8007‐45‐2 1.5E‐03 c 2.0E‐02 c 4.0E‐02 H 1 Copper 7440‐50‐8 3.1E+03 n 4.1E+04 n 1.5E+03 n 1.3E+03 5.1E+01 4.6E+01 5.0E‐02 I 6.0E‐01 C 1 0.1 Cresol, m‐ 108‐39‐4 3.1E+03 n 3.1E+04 n 6.3E+02 n 2.6E+03 n 1.8E+03 n 1.5E+00 5.0E‐02 I 6.0E‐01 C 1 0.1 Cresol, o‐ 95‐48‐7 3.1E+03 n 3.1E+04 n 6.3E+02 n 2.6E+03 n 1.8E+03 n 1.5E+00 5.0E‐03 H 6.0E‐01 C 1 0.1 Cresol, p‐ 106‐44‐5 3.1E+02 n 3.1E+03 n 6.3E+02 n 2.6E+03 n 1.8E+02 n 1.5E‐01 1.0E‐01 X 1 0.1 Cresol, p‐chloro‐m‐ 59‐50‐7 6.1E+03 n 6.2E+04 n 3.7E+03 n 4.3E+00 1.0E‐01 A 6.0E‐01 C V 1 5.0E+04 Cresols 1319‐77‐3 7.5E+03 n 9.1E+04 ns 6.3E+02 n 2.6E+03 n 9.3E+02 n 7.6E‐01 1.9E+00 H 1.0E‐03 P V 1 1.7E+04 Crotonaldehyde, trans‐ 123‐73‐9 3.4E‐01 c 1.5E+00 c 3.5E‐02 c 7.2E‐06 1.0E‐01 I 4.0E‐01 I V 1 2.7E+02 Cumene 98‐82‐8 2.1E+03 ns 1.1E+04 ns 4.2E+02 n 1.8E+03 n 6.8E+02 n 1.1E+00 2.2E‐01 C 6.3E‐05 C 1 0.1 Cupferron 135‐20‐6 2.2E+00 c 7.8E+00 c 3.9E‐02 c 1.9E‐01 c 3.1E‐01 c 5.3E‐04 8.4E‐01 H 2.0E‐03 H 1 0.1 Cyanazine 21725‐46‐2 5.8E‐01 c 2.1E+00 c 8.0E‐02 c 3.7E‐05 Cyanides 4.0E‐02 I 1 ~Calcium Cyanide 592‐01‐8 3.1E+03 n 4.1E+04 n 1.5E+03 n 5.0E‐03 I 1 ~Copper Cyanide 544‐92‐3 3.9E+02 n 5.1E+03 n 1.8E+02 n 2.0E‐02 I V 1 1.0E+07 ~Cyanide (CN‐) 57‐12‐5 1.6E+03 n 2.0E+04 n 7.3E+02 n 2.0E+02 7.4E+00 2.0E+00 4.0E‐02 I V 1 ~Cyanogen 460‐19‐5 3.1E+03 n 4.1E+04 n 1.5E+03 n 9.0E‐02 I V 1 ~Cyanogen Bromide 506‐68‐3 7.0E+03 n 9.2E+04 n 3.3E+03 n 5.0E‐02 I V 1 ~Cyanogen Chloride 506‐77‐4 3.9E+03 n 5.1E+04 n 1.8E+03 n 6.0E‐04 I 8.0E‐04 I V 1 ~Hydrogen Cyanide 74‐90‐8 4.7E+01 n 6.1E+02 n 8.3E‐01 n 3.5E+00 n 1.6E+00 n 5.0E‐02 I 1 ~Potassium Cyanide 151‐50‐8 3.9E+03 n 5.1E+04 n 1.8E+03 n 2.0E‐01 I 0.04 ~Potassium Silver Cyanide 506‐61‐6 1.6E+04 n 2.0E+05 nm 7.3E+03 n 1.0E‐01 I 0.04 ~Silver Cyanide 506‐64‐9 7.8E+03 n 1.0E+05 nm 3.7E+03 n 4.0E‐02 I 1 ~Sodium Cyanide 143‐33‐9 3.1E+03 n 4.1E+04 n 1.5E+03 n 2.0E+02 2.0E‐04 P V 1 4.6E+03 ~Thiocyanate 463‐56‐9 1.6E+01 n 2.0E+02 n 7.3E+00 n 1.5E‐03 5.0E‐02 I 1 ~Zinc Cyanide 557‐21‐1 3.9E+03 n 5.1E+04 n 1.8E+03 n 6.0E+00 I V 1 1.2E+02 Cyclohexane 110‐82‐7 7.0E+03 ns 2.9E+04 ns 6.3E+03 n 2.6E+04 n 1.3E+04 n 1.3E+01 2.3E‐02 H 1 0.1 Cyclohexane, 1,2,3,4,5‐pentabromo‐6‐chloro‐ 87‐84‐3 2.1E+01 c 7.5E+01 c 2.9E+00 c 1.7E‐02 5.0E+00 I 7.0E‐01 P 1 0.1 Cyclohexanone 108‐94‐1 3.1E+05 nm 3.1E+06 nm 7.3E+02 n 3.1E+03 n 1.8E+05 n 4.3E+01 2.0E‐01 I 1 0.1 Cyclohexylamine 108‐91‐8 1.2E+04 n 1.2E+05 nm 7.3E+03 n 1.9E+00 5.0E‐03 I 1 0.1 Cyhalothrin/karate 68085‐85‐8 3.1E+02 n 3.1E+03 n 1.8E+02 n 1.2E+02 1.0E‐02 I 1 0.1 Cypermethrin 52315‐07‐8 6.1E+02 n 6.2E+03 n 3.7E+02 n 5.8E+01 7.5E‐03 I 1 0.1 Cyromazine 66215‐27‐8 4.6E+02 n 4.6E+03 n 2.7E+02 n 7.0E‐02 2.4E‐01 I 6.9E‐05 C 1 0.1 DDD 72‐54‐8 2.0E+00 c 7.2E+00 c 3.5E‐02 c 1.8E‐01 c 2.8E‐01 c 6.6E‐02 3.4E‐01 I 9.7E‐05 C 1 0.1 DDE, p,p'‐ 72‐55‐9 1.4E+00 c 5.1E+00 c 2.5E‐02 c 1.3E‐01 c 2.0E‐01 c 4.7E‐02 3.4E‐01 I 9.7E‐05 I 5.0E‐04 I 1 0.03 DDT 50‐29‐3 1.7E+00 c* 7.0E+00 c* 2.5E‐02 c 1.3E‐01 c 2.0E‐01 c* 6.7E‐02 1.0E‐02 I 1 0.1 Dacthal 1861‐32‐1 6.1E+02 n 6.2E+03 n 3.7E+02 n 4.5E‐01 3.0E‐02 I 1 0.1 Dalapon 75‐99‐0 1.8E+03 n 1.8E+04 n 1.1E+03 n 2.0E+02 2.3E‐01 4.1E‐02 7.0E‐04 I 7.0E‐03 I 1 0.1 Decabromodiphenyl ether, 2,2',3,3',4,4',5,5',6,6'‐ (BDE‐209) 1163‐19‐5 4.3E+02 n 2.5E+03 9.6E+01 5.3E+01 4.0E‐05 I 1 0.1 Demeton 8065‐48‐3 2.4E+00 n 2.5E+01 n 1.5E+00 n 1.2E‐03 I 6.0E‐01 I 1 0.1 103‐23‐1 4.1E+02 c* 1.4E+03 c 5.6E+01 c 4.0E+02 4.0E+00 2.9E+01 6.1E‐02 H 1 0.1 Diallate 2303‐16‐4 8.0E+00 c 2.8E+01 c 1.1E+00 c 1.6E‐03 7.0E‐04 A 1 0.1 Diazinon 333‐41‐5 4.3E+01 n 4.3E+02 n 2.6E+01 n 1.6E‐01 Page 3 of 12 ---PAGE BREAK--- Regional Screening Level (RSL) Summary Table June 2011 SFO (mg/kg‐day)‐1 k e y IUR (ug/m3)‐1 k e y RfDo (mg/kg‐day) k e y RfCi (mg/m3) k e y v o c muta‐ gen GIABS ABS Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) key Industrial Soil (mg/kg) key Resident Air (ug/m3) key Industrial Air (ug/m3) key Tapwater (ug/L) key MCL (ug/L) Risk‐based SSL (mg/kg) MCL‐based SSL (mg/kg) Key: I = IRIS; P = A = ATSDR; C = Cal EPA; X = Appendix; H = HEAST; J = New Jersey; Y = New York; O = EPA Office of Water; E = Environmental Criteria and Assessment Office; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ; c = cancer; * = where: n SL < 100X c SL; = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit (See User Guide); s = Concentration may exceed Csat (See User Guide); SSL values are based on DAF=1 Toxicity and Chemical‐specific Information Contaminant Screening Levels Protection of Ground Water SSLs 8.0E‐01 P 6.0E‐03 P 2.0E‐04 P 2.0E‐04 I V M 1 9.8E+02 Dibromo‐3‐chloropropane, 1,2‐ 96‐12‐8 5.4E‐03 c 6.9E‐02 c 1.6E‐04 c 2.0E‐03 c 3.2E‐04 c 2.0E‐01 1.4E‐07 8.6E‐05 1.0E‐02 I 1 0.1 Dibromobenzene, 1,4‐ 106‐37‐6 6.1E+02 n 6.2E+03 n 3.7E+02 n 3.5E‐01 8.4E‐02 I 2.7E‐05 C 2.0E‐02 I V 1 0.1 8.0E+02 Dibromochloromethane 124‐48‐1 6.8E‐01 c 3.3E+00 c 9.0E‐02 c 4.5E‐01 c 1.5E‐01 c 8.0E+01(F) 3.9E‐05 2.1E‐02 2.0E+00 I 6.0E‐04 I 9.0E‐03 I 9.0E‐03 I V 1 1.3E+03 Dibromoethane, 1,2‐ 106‐93‐4 3.4E‐02 c 1.7E‐01 c 4.1E‐03 c 2.0E‐02 c 6.5E‐03 c 5.0E‐02 1.8E‐06 1.4E‐05 1.0E‐02 H 4.0E‐03 X V 1 2.8E+03 Dibromomethane (Methylene Bromide) 74‐95‐3 2.5E+01 n 1.1E+02 n 4.2E+00 n 1.8E+01 n 8.2E+00 n 2.0E‐03 1.0E‐01 I 1 0.1 Dibutyl Phthalate 84‐74‐2 6.1E+03 n 6.2E+04 n 3.7E+03 n 9.2E+00 3.0E‐04 P 1 0.1 Dibutyltin Compounds NA 1.8E+01 n 1.8E+02 n 1.1E+01 n 3.0E‐02 I 1 0.1 Dicamba 1918‐00‐9 1.8E+03 n 1.8E+04 n 1.1E+03 n 2.8E‐01 4.2E‐03 P V 1 5.2E+02 Dichloro‐2‐butene, 1,4‐ 764‐41‐0 6.9E‐03 c 3.5E‐02 c 5.8E‐04 c 2.9E‐03 c 1.2E‐03 c 5.4E‐07 4.2E‐03 P V 1 0.1 5.2E+02 Dichloro‐2‐butene, cis‐1,4‐ 1476‐11‐5 6.9E‐03 c 3.5E‐02 c 5.8E‐04 c 2.9E‐03 c 1.2E‐03 c 5.4E‐07 4.2E‐03 P V 1 0.1 7.6E+02 Dichloro‐2‐butene, trans‐1,4‐ 110‐57‐6 6.9E‐03 c 3.5E‐02 c 5.8E‐04 c 2.9E‐03 c 1.2E‐03 c 5.4E‐07 5.0E‐02 I 4.0E‐03 I 1 0.1 Dichloroacetic Acid 79‐43‐6 9.7E+00 c* 3.4E+01 c* 1.3E+00 c 6.0E+01 2.8E‐04 1.2E‐02 9.0E‐02 I 2.0E‐01 H V 1 3.8E+02 Dichlorobenzene, 1,2‐ 95‐50‐1 1.9E+03 ns 9.8E+03 ns 2.1E+02 n 8.8E+02 n 3.7E+02 n 6.0E+02 3.6E‐01 5.8E‐01 5.4E‐03 C 1.1E‐05 C 7.0E‐02 A 8.0E‐01 I V 1 Dichlorobenzene, 1,4‐ 106‐46‐7 2.4E+00 c 1.2E+01 c 2.2E‐01 c 1.1E+00 c 4.3E‐01 c 7.5E+01 4.1E‐04 7.2E‐02 4.5E‐01 I 3.4E‐04 C 1 0.1 Dichlorobenzidine, 3,3'‐ 91‐94‐1 1.1E+00 c 3.8E+00 c 7.2E‐03 c 3.6E‐02 c 1.5E‐01 c 9.8E‐04 9.0E‐03 X 1 0.1 Dichlorobenzophenone, 4,4'‐ 90‐98‐2 5.5E+02 n 5.5E+03 n 3.3E+02 n 2.0E+00 2.0E‐01 I 1.0E‐01 X V 1 8.5E+02 Dichlorodifluoromethane 75‐71‐8 9.4E+01 n 4.0E+02 n 1.0E+02 n 4.4E+02 n 2.0E+02 n 3.1E‐01 5.7E‐03 C 1.6E‐06 C 2.0E‐01 P V 1 1.7E+03 Dichloroethane, 1,1‐ 75‐34‐3 3.3E+00 c 1.7E+01 c 1.5E+00 c 7.7E+00 c 2.4E+00 c 6.9E‐04 9.1E‐02 I 2.6E‐05 I 6.0E‐03 X 7.0E‐03 P V 1 3.0E+03 Dichloroethane, 1,2‐ 107‐06‐2 4.3E‐01 c* 2.2E+00 c* 9.4E‐02 c* 4.7E‐01 c* 1.5E‐01 c* 5.0E+00 4.2E‐05 1.4E‐03 5.0E‐02 I 2.0E‐01 I V 1 1.2E+03 Dichloroethylene, 1,1‐ 75‐35‐4 2.4E+02 n 1.1E+03 n 2.1E+02 n 8.8E+02 n 3.4E+02 n 7.0E+00 1.2E‐01 2.5E‐03 9.0E‐03 H V 1 1.3E+03 Dichloroethylene, 1,2‐ (Mixed Isomers) 540‐59‐0 7.0E+02 n 9.2E+03 ns 3.3E+02 n 9.7E‐02 2.0E‐03 I V 1 2.4E+03 Dichloroethylene, 1,2‐cis‐ 156‐59‐2 1.6E+02 n 2.0E+03 n 7.3E+01 n 7.0E+01 2.1E‐02 2.1E‐02 2.0E‐02 I 6.0E‐02 P V 1 1.7E+03 Dichloroethylene, 1,2‐trans‐ 156‐60‐5 1.5E+02 n 6.9E+02 n 6.3E+01 n 2.6E+02 n 1.1E+02 n 1.0E+02 3.1E‐02 2.9E‐02 3.0E‐03 I 1 0.1 Dichlorophenol, 2,4‐ 120‐83‐2 1.8E+02 n 1.8E+03 n 1.1E+02 n 1.3E‐01 1.0E‐02 I 1 0.05 Dichlorophenoxy Acetic Acid, 2,4‐ 94‐75‐7 6.9E+02 n 7.7E+03 n 3.7E+02 n 7.0E+01 9.5E‐02 1.8E‐02 8.0E‐03 I 1 0.1 Dichlorophenoxy)butyric Acid, 4‐(2,4‐ 94‐82‐6 4.9E+02 n 4.9E+03 n 2.9E+02 n 1.2E‐01 3.6E‐02 C 1.0E‐05 C 9.0E‐02 A 4.0E‐03 I V 1 1.4E+03 Dichloropropane, 1,2‐ 78‐87‐5 9.4E‐01 c* 4.7E+00 c* 2.4E‐01 c* 1.2E+00 c* 3.9E‐01 c* 5.0E+00 1.3E‐04 1.7E‐03 2.0E‐02 P V 1 1.5E+03 Dichloropropane, 1,3‐ 142‐28‐9 1.6E+03 ns 2.0E+04 ns 7.3E+02 n 2.5E‐01 3.0E‐03 I 1 0.1 Dichloropropanol, 2,3‐ 616‐23‐9 1.8E+02 n 1.8E+03 n 1.1E+02 n 2.3E‐02 1.0E‐01 I 4.0E‐06 I 3.0E‐02 I 2.0E‐02 I V 1 1.6E+03 Dichloropropene, 1,3‐ 542‐75‐6 1.7E+00 c* 8.3E+00 c* 6.1E‐01 c* 3.1E+00 c* 4.3E‐01 c* 1.5E‐04 2.9E‐01 I 8.3E‐05 C 5.0E‐04 I 5.0E‐04 I 1 0.1 Dichlorvos 62‐73‐7 1.7E+00 c* 5.9E+00 c* 2.9E‐02 c* 1.5E‐01 c* 2.3E‐01 c* 7.1E‐05 8.0E‐03 P 7.0E‐03 P V 1 1.3E+02 Dicyclopentadiene 77‐73‐6 3.1E+01 n 1.3E+02 ns 7.3E+00 n 3.1E+01 n 1.4E+01 n 4.8E‐02 1.6E+01 I 4.6E‐03 I 5.0E‐05 I 1 0.1 Dieldrin 60‐57‐1 3.0E‐02 c 1.1E‐01 c 5.3E‐04 c 2.7E‐03 c 4.2E‐03 c 1.7E‐04 3.0E‐04 C 5.0E‐03 I 1 0.1 Diesel Engine Exhaust NA 8.1E‐03 c 4.1E‐02 c 3.0E‐03 C 1 0.1 Diethanolamine 111‐42‐2 4.3E+06 nm 1.8E+07 nm 3.1E+00 n 1.3E+01 n 8.0E‐01 I 1 0.1 Diethyl Phthalate 84‐66‐2 4.9E+04 n 4.9E+05 nm 2.9E+04 n 1.2E+01 3.0E‐02 P 1.0E‐04 P 1 0.1 Diethylene Glycol Monobutyl Ether 112‐34‐5 1.8E+03 n 1.8E+04 n 1.0E‐01 n 4.4E‐01 n 1.1E+03 n 2.4E‐01 6.0E‐02 P 3.0E‐04 P 1 0.1 Diethylene Glycol Monoethyl Ether 111‐90‐0 3.6E+03 n 3.6E+04 n 3.1E‐01 n 1.3E+00 n 2.2E+03 n 4.4E‐01 1.0E‐03 P 1 0.1 617‐84‐5 6.1E+01 n 6.2E+02 n 3.7E+01 n 7.5E‐03 3.5E+02 C 1.0E‐01 C 1 0.1 56‐53‐1 1.4E‐03 c 4.9E‐03 c 2.4E‐05 c 1.2E‐04 c 1.9E‐04 c 1.1E‐04 8.0E‐02 I 1 0.1 Difenzoquat 43222‐48‐6 4.9E+03 n 4.9E+04 n 2.9E+03 n 2.0E‐02 I 1 0.1 Diflubenzuron 35367‐38‐5 1.2E+03 n 1.2E+04 n 7.3E+02 n 8.2E‐01 4.0E+01 I V 1 1.4E+03 Difluoroethane, 1,1‐ 75‐37‐6 5.2E+04 ns 2.2E+05 nms 4.2E+04 n 1.8E+05 n 8.3E+04 n 2.8E+01 4.4E‐02 C 1.3E‐05 C 1 0.1 Dihydrosafrole 94‐58‐6 1.1E+01 c 3.9E+01 c 1.9E‐01 c 9.4E‐01 c 1.5E+00 c 1.9E‐03 7.0E‐01 P V 1 2.3E+03 Diisopropyl Ether 108‐20‐3 2.4E+03 ns 1.0E+04 ns 7.3E+02 n 3.1E+03 n 1.5E+03 n 3.7E‐01 8.0E‐02 I V 1 5.3E+02 Diisopropyl 1445‐75‐6 6.3E+03 ns 8.2E+04 ns 2.9E+03 n 8.3E‐01 2.0E‐02 I 1 0.1 Dimethipin 55290‐64‐7 1.2E+03 n 1.2E+04 n 7.3E+02 n 1.6E‐01 2.0E‐04 I 1 0.1 Dimethoate 60‐51‐5 1.2E+01 n 1.2E+02 n 7.3E+00 n 1.6E‐03 1.4E‐02 H 1 0.1 Dimethoxybenzidine, 3,3'‐ 119‐90‐4 3.5E+01 c 1.2E+02 c 4.8E+00 c 5.8E‐03 1.7E‐03 P 6.0E‐02 P 1 0.1 Dimethyl 756‐79‐6 2.9E+02 c* 1.0E+03 c* 4.0E+01 c* 8.3E‐03 4.6E+00 C 1.3E‐03 C 1 0.1 Dimethylamino azobenzene 60‐11‐7 1.1E‐01 c 3.7E‐01 c 1.9E‐03 c 9.4E‐03 c 1.5E‐02 c 6.2E‐05 5.8E‐01 H 1 0.1 Dimethylaniline HCl, 2,4‐ 21436‐96‐4 8.4E‐01 c 3.0E+00 c 1.2E‐01 c 6.6E‐05 2.0E‐01 P 2.0E‐03 X 1 0.1 Dimethylaniline, 2,4‐ 95‐68‐1 2.4E+00 c* 8.6E+00 c 3.4E‐01 c 1.9E‐04 2.0E‐03 I V 1 8.3E+02 Dimethylaniline, N,N‐ 121‐69‐7 1.6E+02 n 2.0E+03 ns 7.3E+01 n 2.6E‐02 1.1E+01 P 1 0.1 3,3'‐ 119‐93‐7 4.4E‐02 c 1.6E‐01 c 6.1E‐03 c 4.0E‐05 1.0E‐01 P 3.0E‐02 I 1 0.1 68‐12‐2 6.1E+03 n 6.2E+04 n 3.1E+01 n 1.3E+02 n 3.7E+03 n 7.4E‐01 1.0E‐04 X 2.0E‐06 X 1 0.1 1,1‐ 57‐14‐7 6.1E+00 n 6.1E+01 n 2.1E‐03 n 8.8E‐03 n 3.7E+00 n 8.2E‐04 5.5E+02 C 1.6E‐01 C 1 0.1 1,2‐ 540‐73‐8 8.8E‐04 c 3.1E‐03 c 1.5E‐05 c 7.7E‐05 c 1.2E‐04 c 2.8E‐08 2.0E‐02 I 1 0.1 2,4‐ 105‐67‐9 1.2E+03 n 1.2E+04 n 7.3E+02 n 8.6E‐01 6.0E‐04 I 1 0.1 2,6‐ 576‐26‐1 3.7E+01 n 3.7E+02 n 2.2E+01 n 2.6E‐02 1.0E‐03 I 1 0.1 3,4‐ 95‐65‐8 6.1E+01 n 6.2E+02 n 3.7E+01 n 4.3E‐02 1.0E‐01 I V 1 5.5E+00 120‐61‐6 7.8E+03 ns 1.0E+05 nms 3.7E+03 n 9.6E‐01 4.5E‐02 C 1.3E‐05 C 1 0.1 513‐37‐1 1.1E+01 c 3.8E+01 c 1.9E‐01 c 9.4E‐01 c 1.5E+00 c 9.2E‐04 8.0E‐05 X 1 0.1 Dinitro‐o‐cresol, 4,6‐ 534‐52‐1 4.9E+00 n 4.9E+01 n 2.9E+00 n 5.0E‐03 2.0E‐03 I 1 0.1 Dinitro‐o‐cyclohexyl Phenol, 4,6‐ 131‐89‐5 1.2E+02 n 1.2E+03 n 7.3E+01 n 2.4E+00 Page 4 of 12 ---PAGE BREAK--- Regional Screening Level (RSL) Summary Table June 2011 SFO (mg/kg‐day)‐1 k e y IUR (ug/m3)‐1 k e y RfDo (mg/kg‐day) k e y RfCi (mg/m3) k e y v o c muta‐ gen GIABS ABS Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) key Industrial Soil (mg/kg) key Resident Air (ug/m3) key Industrial Air (ug/m3) key Tapwater (ug/L) key MCL (ug/L) Risk‐based SSL (mg/kg) MCL‐based SSL (mg/kg) Key: I = IRIS; P = A = ATSDR; C = Cal EPA; X = Appendix; H = HEAST; J = New Jersey; Y = New York; O = EPA Office of Water; E = Environmental Criteria and Assessment Office; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ; c = cancer; * = where: n SL < 100X c SL; = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit (See User Guide); s = Concentration may exceed Csat (See User Guide); SSL values are based on DAF=1 Toxicity and Chemical‐specific Information Contaminant Screening Levels Protection of Ground Water SSLs 1.0E‐04 P 1 0.1 Dinitrobenzene, 1,2‐ 528‐29‐0 6.1E+00 n 6.2E+01 n 3.7E+00 n 3.3E‐03 1.0E‐04 I 1 0.1 Dinitrobenzene, 1,3‐ 99‐65‐0 6.1E+00 n 6.2E+01 n 3.7E+00 n 3.3E‐03 1.0E‐04 P 1 0.1 Dinitrobenzene, 1,4‐ 100‐25‐4 6.1E+00 n 6.2E+01 n 3.7E+00 n 3.3E‐03 2.0E‐03 I 1 0.1 Dinitrophenol, 2,4‐ 51‐28‐5 1.2E+02 n 1.2E+03 n 7.3E+01 n 8.2E‐02 6.8E‐01 I 1 0.1 Dinitrotoluene Mixture, 2,4/2,6‐ 25321‐14‐6 7.2E‐01 c 2.5E+00 c 9.9E‐02 c 1.4E‐04 3.1E‐01 C 8.9E‐05 C 2.0E‐03 I 1 0.102 Dinitrotoluene, 2,4‐ 121‐14‐2 1.6E+00 c* 5.5E+00 c 2.7E‐02 c 1.4E‐01 c 2.2E‐01 c 2.9E‐04 1.0E‐03 P 1 0.099 Dinitrotoluene, 2,6‐ 606‐20‐2 6.1E+01 n 6.2E+02 n 3.7E+01 n 5.0E‐02 2.0E‐03 S 1 0.006 Dinitrotoluene, 2‐Amino‐4,6‐ 35572‐78‐2 1.5E+02 n 2.0E+03 n 7.3E+01 n 5.6E‐02 2.0E‐03 S 1 0.009 Dinitrotoluene, 4‐Amino‐2,6‐ 19406‐51‐0 1.5E+02 n 1.9E+03 n 7.3E+01 n 5.6E‐02 1.0E‐03 I 1 0.1 Dinoseb 88‐85‐7 6.1E+01 n 6.2E+02 n 3.7E+01 n 7.0E+00 3.2E‐01 6.2E‐02 1.0E‐01 I 7.7E‐06 C 3.0E‐02 I 3.0E+00 C 1 0.1 Dioxane, 1,4‐ 123‐91‐1 4.9E+00 c 1.7E+01 c 3.2E‐01 c 1.6E+00 c 6.7E‐01 c 1.4E‐04 Dioxins 6.2E+03 I 1.3E+00 I 1 0.03 ~Hexachlorodibenzo‐p‐dioxin, Mixture NA 9.4E‐05 c 3.9E‐04 c 1.9E‐06 c 9.4E‐06 c 1.1E‐05 c 1.5E‐05 1.3E+05 C 3.8E+01 C 1.0E‐09 A 4.0E‐08 C 1 0.03 ~TCDD, 2,3,7,8‐ 1746‐01‐6 4.5E‐06 c* 1.8E‐05 c* 6.4E‐08 c 3.2E‐07 c 5.2E‐07 c* 3.0E‐05 2.6E‐07 1.5E‐05 3.0E‐02 I 1 0.1 Diphenamid 957‐51‐7 1.8E+03 n 1.8E+04 n 1.1E+03 n 1.1E+01 8.0E‐04 X 1 0.1 Diphenyl Sulfone 127‐63‐9 4.9E+01 n 4.9E+02 n 2.9E+01 n 7.1E‐02 2.5E‐02 I 1 0.1 Diphenylamine 122‐39‐4 1.5E+03 n 1.5E+04 n 9.1E+02 n 1.7E+00 8.0E‐01 I 2.2E‐04 I 1 0.1 1,2‐ 122‐66‐7 6.1E‐01 c 2.2E+00 c 1.1E‐02 c 5.6E‐02 c 8.4E‐02 c 2.7E‐04 2.2E‐03 I 1 0.1 Diquat 85‐00‐7 1.3E+02 n 1.4E+03 n 8.0E+01 n 2.0E+01 1.5E+00 3.7E‐01 7.4E+00 C 2.1E‐03 C 1 0.1 Direct Black 38 1937‐37‐7 6.6E‐02 c 2.3E‐01 c 1.2E‐03 c 5.8E‐03 c 9.1E‐03 c 4.4E+00 7.4E+00 C 2.1E‐03 C 1 0.1 Direct Blue 6 2602‐46‐2 6.6E‐02 c 2.3E‐01 c 1.2E‐03 c 5.8E‐03 c 9.1E‐03 c 1.4E+01 6.7E+00 C 1.9E‐03 C 1 0.1 Direct Brown 95 16071‐86‐6 7.3E‐02 c 2.6E‐01 c 1.3E‐03 c 6.5E‐03 c 1.0E‐02 c 4.0E‐05 I 1 0.1 Disulfoton 298‐04‐4 2.4E+00 n 2.5E+01 n 1.5E+00 n 2.7E‐03 1.0E‐02 I 1 0.1 Dithiane, 1,4‐ 505‐29‐3 6.1E+02 n 6.2E+03 n 3.7E+02 n 1.8E‐01 2.0E‐03 I 1 0.1 Diuron 330‐54‐1 1.2E+02 n 1.2E+03 n 7.3E+01 n 3.1E‐02 4.0E‐03 I 1 0.1 Dodine 2439‐10‐3 2.4E+02 n 2.5E+03 n 1.5E+02 n 7.5E‐01 2.5E‐02 I V 1 4.1E+02 EPTC 759‐94‐4 2.0E+03 ns 2.6E+04 ns 9.1E+02 n 4.8E‐01 6.0E‐03 I 1 0.1 Endosulfan 115‐29‐7 3.7E+02 n 3.7E+03 n 2.2E+02 n 3.0E+00 2.0E‐02 I 1 0.1 Endothall 145‐73‐3 1.2E+03 n 1.2E+04 n 7.3E+02 n 1.0E+02 1.7E‐01 2.4E‐02 3.0E‐04 I 1 0.1 Endrin 72‐20‐8 1.8E+01 n 1.8E+02 n 1.1E+01 n 2.0E+00 4.4E‐01 8.1E‐02 9.9E‐03 I 1.2E‐06 I 6.0E‐03 P 1.0E‐03 I V 1 1.1E+04 Epichlorohydrin 106‐89‐8 2.0E+01 n 8.8E+01 n 1.0E+00 n 4.4E+00 n 2.1E+00 n 4.5E‐04 2.0E‐02 I V 1 1.5E+04 Epoxybutane, 1,2‐ 106‐88‐7 1.7E+02 n 7.2E+02 n 2.1E+01 n 8.8E+01 n 4.2E+01 n 9.2E‐03 5.0E‐03 I 1 0.1 Ethephon 16672‐87‐0 3.1E+02 n 3.1E+03 n 1.8E+02 n 3.8E‐02 5.0E‐04 I 1 0.1 Ethion 563‐12‐2 3.1E+01 n 3.1E+02 n 1.8E+01 n 3.6E‐02 1.0E‐01 P 6.0E‐02 P 1 0.1 Ethoxyethanol Acetate, 2‐ 111‐15‐9 6.1E+03 n 6.2E+04 n 6.3E+01 n 2.6E+02 n 3.7E+03 n 7.6E‐01 4.0E‐01 H 2.0E‐01 I 1 0.1 Ethoxyethanol, 2‐ 110‐80‐5 2.4E+04 n 2.5E+05 nm 2.1E+02 n 8.8E+02 n 1.5E+04 n 2.9E+00 9.0E‐01 I V 1 1.1E+04 Ethyl Acetate 141‐78‐6 7.0E+04 ns 9.2E+05 nms 3.3E+04 n 7.0E+00 4.8E‐02 H V 1 2.5E+03 Ethyl Acrylate 140‐88‐5 1.3E+01 c 6.0E+01 c 1.4E+00 c 3.1E‐04 1.0E+01 I V 1 2.1E+03 Ethyl Chloride 75‐00‐3 1.5E+04 ns 6.1E+04 ns 1.0E+04 n 4.4E+04 n 2.1E+04 n 5.9E+00 2.0E‐01 I V 1 1.0E+04 Ethyl Ether 60‐29‐7 1.6E+04 ns 2.0E+05 nms 7.3E+03 n 1.6E+00 9.0E‐02 H 3.0E‐01 P V 1 1.1E+03 Ethyl Methacrylate 97‐63‐2 1.5E+03 ns 7.5E+03 ns 3.1E+02 n 1.3E+03 n 5.3E+02 n 1.2E‐01 1.0E‐05 I 1 0.1 Ethyl‐p‐nitrophenyl Phosphonate 2104‐64‐5 6.1E‐01 n 6.2E+00 n 3.7E‐01 n 1.1E‐02 1.1E‐02 C 2.5E‐06 C 1.0E‐01 I 1.0E+00 I V 1 4.8E+02 100‐41‐4 5.4E+00 c 2.7E+01 c 9.7E‐01 c 4.9E+00 c 1.5E+00 c 7.0E+02 1.7E‐03 7.8E‐01 3.0E‐02 P 1 0.1 Ethylene Cyanohydrin 109‐78‐4 1.8E+03 n 1.8E+04 n 1.1E+03 n 2.2E‐01 9.0E‐02 P 1 0.1 Ethylene Diamine 107‐15‐3 5.5E+03 n 5.5E+04 n 3.3E+03 n 7.5E‐01 2.0E+00 I 4.0E‐01 C 1 0.1 Ethylene Glycol 107‐21‐1 1.2E+05 nm 1.2E+06 nm 4.2E+02 n 1.8E+03 n 7.3E+04 n 1.5E+01 1.0E‐01 I 1.6E+00 I 1 0.1 Ethylene Glycol Monobutyl Ether 111‐76‐2 6.1E+03 n 6.2E+04 n 1.7E+03 n 7.0E+03 n 3.7E+03 n 7.5E‐01 3.1E‐01 C 8.8E‐05 C 3.0E‐02 C V 1 1.2E+05 Ethylene Oxide 75‐21‐8 1.7E‐01 c 8.3E‐01 c 2.8E‐02 c 1.4E‐01 c 4.4E‐02 c 9.1E‐06 4.5E‐02 C 1.3E‐05 C 8.0E‐05 I 1 0.1 Ethylene Thiourea 96‐45‐7 4.9E+00 n 3.8E+01 1.9E‐01 c 9.4E‐01 c 1.5E+00 3.4E‐04 6.5E+01 C 1.9E‐02 C 1 0.1 Ethyleneimine 151‐56‐4 7.5E‐03 c 2.7E‐02 c 1.3E‐04 c 6.5E‐04 c 1.0E‐03 c 2.3E‐07 3.0E+00 I 1 0.1 Ethyl Glycolate 84‐72‐0 1.8E+05 nm 1.8E+06 nm 1.1E+05 n 2.5E+02 8.0E‐03 I 1 0.1 Express 101200‐48‐0 4.9E+02 n 4.9E+03 n 2.9E+02 n 1.1E‐01 2.5E‐04 I 1 0.1 Fenamiphos 22224‐92‐6 1.5E+01 n 1.5E+02 n 9.1E+00 n 9.1E‐03 2.5E‐02 I 1 0.1 Fenpropathrin 39515‐41‐8 1.5E+03 n 1.5E+04 n 9.1E+02 n 4.1E+01 1.3E‐02 I 1 0.1 Fluometuron 2164‐17‐2 7.9E+02 n 8.0E+03 n 4.7E+02 n 3.7E‐01 4.0E‐02 C 1.3E‐02 C 1 Fluoride 16984‐48‐8 3.1E+03 n 4.1E+04 n 1.4E+01 n 5.7E+01 n 1.5E+03 n 2.2E+02 6.0E‐02 I 1.3E‐02 C 1 Fluorine (Soluble Fluoride) 7782‐41‐4 4.7E+03 n 6.1E+04 n 1.4E+01 n 5.7E+01 n 2.2E+03 n 4.0E+03 3.3E+02 6.0E+02 8.0E‐02 I 1 0.1 Fluridone 59756‐60‐4 4.9E+03 n 4.9E+04 n 2.9E+03 n 3.3E+02 2.0E‐02 I 1 0.1 Flurprimidol 56425‐91‐3 1.2E+03 n 1.2E+04 n 7.3E+02 n 3.3E+00 6.0E‐02 I 1 0.1 Flutolanil 66332‐96‐5 3.7E+03 n 3.7E+04 n 2.2E+03 n 1.2E+01 1.0E‐02 I 1 0.1 Fluvalinate 69409‐94‐5 6.1E+02 n 6.2E+03 n 3.7E+02 n 5.3E+02 3.5E‐03 I 1.0E‐01 I 1 0.1 Folpet 133‐07‐3 1.4E+02 c* 4.9E+02 c 1.9E+01 c 4.5E‐03 1.9E‐01 I 1 0.1 Fomesafen 72178‐02‐0 2.6E+00 c 9.1E+00 c 3.5E‐01 c 1.2E‐03 2.0E‐03 I 1 0.1 Fonofos 944‐22‐9 1.2E+02 n 1.2E+03 n 7.3E+01 n 1.4E‐01 1.3E‐05 I 2.0E‐01 I 9.8E‐03 A 1 0.1 Formaldehyde 50‐00‐0 1.2E+04 n 1.2E+05 nm 1.9E‐01 c* 9.4E‐01 c* 7.3E+03 n 1.5E+00 Page 5 of 12 ---PAGE BREAK--- Regional Screening Level (RSL) Summary Table June 2011 SFO (mg/kg‐day)‐1 k e y IUR (ug/m3)‐1 k e y RfDo (mg/kg‐day) k e y RfCi (mg/m3) k e y v o c muta‐ gen GIABS ABS Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) key Industrial Soil (mg/kg) key Resident Air (ug/m3) key Industrial Air (ug/m3) key Tapwater (ug/L) key MCL (ug/L) Risk‐based SSL (mg/kg) MCL‐based SSL (mg/kg) Key: I = IRIS; P = A = ATSDR; C = Cal EPA; X = Appendix; H = HEAST; J = New Jersey; Y = New York; O = EPA Office of Water; E = Environmental Criteria and Assessment Office; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ; c = cancer; * = where: n SL < 100X c SL; = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit (See User Guide); s = Concentration may exceed Csat (See User Guide); SSL values are based on DAF=1 Toxicity and Chemical‐specific Information Contaminant Screening Levels Protection of Ground Water SSLs 9.0E‐01 P 3.0E‐04 X 1 0.1 Formic Acid 64‐18‐6 4.9E+04 n 4.2E+05 nm 3.1E‐01 n 1.3E+00 n 3.3E+04 n 6.6E+00 3.0E+00 I 1 0.1 Fosetyl‐AL 39148‐24‐8 1.8E+05 nm 1.8E+06 nm 1.1E+05 n Furans 1.0E‐03 X V 1 1.7E+02 ~Dibenzofuran 132‐64‐9 7.8E+01 n 1.0E+03 ns 3.7E+01 n 6.8E‐01 1.0E‐03 I V 1 6.2E+03 ~Furan 110‐00‐9 7.8E+01 n 1.0E+03 n 3.7E+01 n 1.4E‐02 3.8E+00 H 1 0.1 Furazolidone 67‐45‐8 1.3E‐01 c 4.5E‐01 c 1.8E‐02 c 3.4E‐05 3.0E‐03 I 5.0E‐02 H 1 0.1 Furfural 98‐01‐1 1.8E+02 n 1.8E+03 n 5.2E+01 n 2.2E+02 n 1.1E+02 n 2.3E‐02 1.5E+00 C 4.3E‐04 C 1 0.1 Furium 531‐82‐8 3.2E‐01 c 1.1E+00 c 5.7E‐03 c 2.9E‐02 c 4.5E‐02 c 6.1E‐05 3.0E‐02 I 8.6E‐06 C 1 0.1 Furmecyclox 60568‐05‐0 1.6E+01 c 5.7E+01 c 2.8E‐01 c 1.4E+00 c 2.2E+00 c 2.4E‐03 4.0E‐04 I 1 0.1 Glufosinate, Ammonium 77182‐82‐2 2.4E+01 n 2.5E+02 n 1.5E+01 n 3.2E‐03 8.0E‐05 C 1 0.1 Glutaraldehyde 111‐30‐8 1.1E+05 nm 4.8E+05 nm 8.3E‐02 n 3.5E‐01 n 4.0E‐04 I 1.0E‐03 H 1 0.1 Glycidyl 765‐34‐4 2.4E+01 n 2.5E+02 n 1.0E+00 n 4.4E+00 n 1.5E+01 n 2.9E‐03 1.0E‐01 I 1 0.1 1071‐83‐6 6.1E+03 n 6.2E+04 n 3.7E+03 n 7.0E+02 7.4E‐01 1.4E‐01 3.0E‐03 I 1 0.1 Goal 42874‐03‐3 1.8E+02 n 1.8E+03 n 1.1E+02 n 8.8E+00 3.0E‐03 A 1.0E‐02 A 1 0.1 Guthion 86‐50‐0 1.8E+02 n 1.8E+03 n 1.0E+01 n 4.4E+01 n 1.1E+02 n 3.3E‐02 5.0E‐05 I 1 0.1 Haloxyfop, Methyl 69806‐40‐2 3.1E+00 n 3.1E+01 n 1.8E+00 n 2.0E‐02 1.3E‐02 I 1 0.1 Harmony 79277‐27‐3 7.9E+02 n 8.0E+03 n 4.7E+02 n 1.4E‐01 4.5E+00 I 1.3E‐03 I 5.0E‐04 I 1 0.1 Heptachlor 76‐44‐8 1.1E‐01 c 3.8E‐01 c 1.9E‐03 c 9.4E‐03 c 1.5E‐02 c 4.0E‐01 1.2E‐03 3.3E‐02 9.1E+00 I 2.6E‐03 I 1.3E‐05 I 1 0.1 Heptachlor Epoxide 1024‐57‐3 5.3E‐02 c* 1.9E‐01 c* 9.4E‐04 c 4.7E‐03 c 7.4E‐03 c* 2.0E‐01 1.5E‐04 4.1E‐03 2.0E‐03 I 1 0.1 Hexabromobenzene 87‐82‐1 1.2E+02 n 1.2E+03 n 7.3E+01 n 4.2E‐01 2.0E‐04 I 1 0.1 Hexabromodiphenyl ether, 2,2',4,4',5,5'‐ (BDE‐153) 68631‐49‐2 1.2E+01 n 1.2E+02 n 7.3E+00 n 1.6E+00 I 4.6E‐04 I 8.0E‐04 I 1 0.1 Hexachlorobenzene 118‐74‐1 3.0E‐01 c 1.1E+00 c 5.3E‐03 c 2.7E‐02 c 4.2E‐02 c 1.0E+00 5.3E‐04 1.3E‐02 7.8E‐02 I 2.2E‐05 I 1.0E‐03 P 1 0.1 Hexachlorobutadiene 87‐68‐3 6.2E+00 2.2E+01 c* 1.1E‐01 c 5.6E‐01 c 8.6E‐01 c* 1.7E‐03 6.3E+00 I 1.8E‐03 I 8.0E‐03 A 1 0.1 Hexachlorocyclohexane, Alpha‐ 319‐84‐6 7.7E‐02 c 2.7E‐01 c 1.4E‐03 c 6.8E‐03 c 1.1E‐02 c 6.2E‐05 1.8E+00 I 5.3E‐04 I 1 0.1 Hexachlorocyclohexane, Beta‐ 319‐85‐7 2.7E‐01 c 9.6E‐01 c 4.6E‐03 c 2.3E‐02 c 3.7E‐02 c 2.2E‐04 1.1E+00 C 3.1E‐04 C 3.0E‐04 I 1 0.04 Hexachlorocyclohexane, Gamma‐ (Lindane) 58‐89‐9 5.2E‐01 c* 2.1E+00 c 7.8E‐03 c 4.0E‐02 c 6.1E‐02 c 2.0E‐01 3.6E‐04 1.2E‐03 1.8E+00 I 5.1E‐04 I 1 0.1 Hexachlorocyclohexane, Technical 608‐73‐1 2.7E‐01 c 9.6E‐01 c 4.8E‐03 c 2.4E‐02 c 3.7E‐02 c 2.2E‐04 6.0E‐03 I 2.0E‐04 I 1 0.1 Hexachlorocyclopentadiene 77‐47‐4 3.7E+02 n 3.7E+03 n 2.1E‐01 n 8.8E‐01 n 2.2E+02 n 5.0E+01 6.8E‐01 1.6E‐01 1.4E‐02 I 4.0E‐06 I 1.0E‐03 I 1 0.1 Hexachloroethane 67‐72‐1 3.5E+01 1.2E+02 6.1E‐01 c 3.1E+00 c 4.8E+00 2.9E‐03 3.0E‐04 I 1 0.1 Hexachlorophene 70‐30‐4 1.8E+01 n 1.8E+02 n 1.1E+01 n 1.5E+01 1.1E‐01 I 3.0E‐03 I 1 0.015 Hexahydro‐1,3,5‐trinitro‐1,3,5‐triazine (RDX) 121‐82‐4 5.6E+00 c* 2.4E+01 c 6.1E‐01 c 2.3E‐04 1.0E‐05 I V 1 5.2E+03 Hexamethylene Diisocyanate, 1,6‐ 822‐06‐0 3.4E+00 n 1.4E+01 n 1.0E‐02 n 4.4E‐02 n 2.1E‐02 n 2.1E‐04 6.0E‐02 H 7.0E‐01 I V 1 1.4E+02 Hexane, N‐ 110‐54‐3 5.7E+02 ns 2.6E+03 ns 7.3E+02 n 3.1E+03 n 8.8E+02 n 6.2E+00 2.0E+00 P 1 0.1 Hexanedioic Acid 124‐04‐9 1.2E+05 nm 1.2E+06 nm 7.3E+04 n 1.8E+01 5.0E‐03 I 3.0E‐02 I V 1 3.3E+03 Hexanone, 2‐ 591‐78‐6 2.1E+02 n 1.4E+03 n 3.1E+01 n 1.3E+02 n 4.7E+01 n 1.1E‐02 3.3E‐02 I 1 0.1 Hexazinone 51235‐04‐2 2.0E+03 n 2.0E+04 n 1.2E+03 n 5.5E‐01 3.0E+00 I 4.9E‐03 I 3.0E‐05 P 1 Hydrazine 302‐01‐2 2.1E‐01 c 9.5E‐01 c 5.0E‐04 c* 2.5E‐03 c* 2.2E‐02 c 3.0E+00 I 4.9E‐03 I 1 Hydrazine Sulfate 10034‐93‐2 2.1E‐01 c 9.5E‐01 c 5.0E‐04 c 2.5E‐03 c 2.2E‐02 c 2.0E‐02 I 1 Hydrogen Chloride 7647‐01‐0 2.8E+07 nm 1.2E+08 nm 2.1E+01 n 8.8E+01 n 4.0E‐02 C 1.4E‐02 C 1 Hydrogen Fluoride 7664‐39‐3 3.1E+03 n 4.1E+04 n 1.5E+01 n 6.1E+01 n 1.5E+03 n 2.0E‐03 I 1 Hydrogen Sulfide 7783‐06‐4 2.8E+06 nm 1.2E+07 nm 2.1E+00 n 8.8E+00 n 6.0E‐02 P 4.0E‐02 P 1 0.1 Hydroquinone 123‐31‐9 8.1E+00 c 2.9E+01 c 1.1E+00 c 7.6E‐04 1.3E‐02 I 1 0.1 Imazalil 35554‐44‐0 7.9E+02 n 8.0E+03 n 4.7E+02 n 8.2E+00 2.5E‐01 I 1 0.1 Imazaquin 81335‐37‐7 1.5E+04 n 1.5E+05 nm 9.1E+03 n 4.5E+01 1.0E‐02 A 1 Iodine 7553‐56‐2 7.8E+02 n 1.0E+04 n 3.7E+02 n 2.2E+01 4.0E‐02 I 1 0.1 Iprodione 36734‐19‐7 2.4E+03 n 2.5E+04 n 1.5E+03 n 4.5E‐01 7.0E‐01 P 1 Iron 7439‐89‐6 5.5E+04 n 7.2E+05 nm 2.6E+04 n 6.4E+02 3.0E‐01 I V 1 1.0E+04 Isobutyl Alcohol 78‐83‐1 2.3E+04 ns 3.1E+05 nms 1.1E+04 n 2.3E+00 9.5E‐04 I 2.0E‐01 I 2.0E+00 C 1 0.1 Isophorone 78‐59‐1 5.1E+02 c* 1.8E+03 c* 2.1E+03 n 8.8E+03 n 7.1E+01 c 2.3E‐02 1.5E‐02 I 1 0.1 Isopropalin 33820‐53‐0 9.2E+02 n 9.2E+03 n 5.5E+02 n 1.3E+01 7.0E+00 C 1 0.1 Isopropanol 67‐63‐0 9.9E+09 nm 4.2E+10 nm 7.3E+03 n 3.1E+04 n 1.0E‐01 I 1 0.1 Isopropyl Methyl Phosphonic Acid 1832‐54‐8 6.1E+03 n 6.2E+04 n 3.7E+03 n 7.9E‐01 5.0E‐02 I 1 0.1 Isoxaben 82558‐50‐7 3.1E+03 n 3.1E+04 n 1.8E+03 n 5.0E+00 3.0E‐01 A V 1 JP‐7 NA 4.3E+08 nm 1.8E+09 nm 3.1E+02 n 1.3E+03 n 6.3E+02 n 7.5E‐02 I 1 0.1 Kerb 23950‐58‐5 4.6E+03 n 4.6E+04 n 2.7E+03 n 2.8E+00 2.0E‐03 I 1 0.1 Lactofen 77501‐63‐4 1.2E+02 n 1.2E+03 n 7.3E+01 n 3.4E+00 Lead Compounds 2.8E‐01 C 8.0E‐05 C 1 0.1 ~Lead acetate 301‐04‐2 1.7E+00 c 6.2E+00 c 3.0E‐02 c 1.5E‐01 c 2.4E‐01 c 1 ~Lead and Compounds 7439‐92‐1 4.0E+02 n 8.0E+02 n 1.5E+01 1.4E+01 3.8E‐02 C 1.1E‐05 C 1 0.1 ~Lead subacetate 1335‐32‐6 1.3E+01 c 4.5E+01 c 2.2E‐01 c 1.1E+00 c 1.8E+00 c 1.0E‐07 I 1 0.1 ~Tetraethyl Lead 78‐00‐2 6.1E‐03 n 6.2E‐02 n 3.7E‐03 n 1.3E‐05 2.0E‐03 I 1 0.1 Linuron 330‐55‐2 1.2E+02 n 1.2E+03 n 7.3E+01 n 6.4E‐02 2.0E‐03 P 1 Lithium 7439‐93‐2 1.6E+02 n 2.0E+03 n 7.3E+01 n 2.2E+01 2.0E‐01 I 1 0.1 Londax 83055‐99‐6 1.2E+04 n 1.2E+05 nm 7.3E+03 n 1.9E+00 5.0E‐04 I 1 0.1 MCPA 94‐74‐6 3.1E+01 n 3.1E+02 n 1.8E+01 n 4.7E‐03 Page 6 of 12 ---PAGE BREAK--- Regional Screening Level (RSL) Summary Table June 2011 SFO (mg/kg‐day)‐1 k e y IUR (ug/m3)‐1 k e y RfDo (mg/kg‐day) k e y RfCi (mg/m3) k e y v o c muta‐ gen GIABS ABS Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) key Industrial Soil (mg/kg) key Resident Air (ug/m3) key Industrial Air (ug/m3) key Tapwater (ug/L) key MCL (ug/L) Risk‐based SSL (mg/kg) MCL‐based SSL (mg/kg) Key: I = IRIS; P = A = ATSDR; C = Cal EPA; X = Appendix; H = HEAST; J = New Jersey; Y = New York; O = EPA Office of Water; E = Environmental Criteria and Assessment Office; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ; c = cancer; * = where: n SL < 100X c SL; = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit (See User Guide); s = Concentration may exceed Csat (See User Guide); SSL values are based on DAF=1 Toxicity and Chemical‐specific Information Contaminant Screening Levels Protection of Ground Water SSLs 1.0E‐02 I 1 0.1 MCPB 94‐81‐5 6.1E+02 n 6.2E+03 n 3.7E+02 n 1.4E‐01 1.0E‐03 I 1 0.1 MCPP 93‐65‐2 6.1E+01 n 6.2E+02 n 3.7E+01 n 1.1E‐02 2.0E‐02 I 1 0.1 Malathion 121‐75‐5 1.2E+03 n 1.2E+04 n 7.3E+02 n 1.9E‐01 1.0E‐01 I 7.0E‐04 C 1 0.1 Maleic 108‐31‐6 6.1E+03 n 6.1E+04 n 7.3E‐01 n 3.1E+00 n 3.7E+03 n 7.4E‐01 5.0E‐01 I 1 0.1 Maleic Hydrazide 123‐33‐1 3.1E+04 n 3.1E+05 nm 1.8E+04 n 3.8E+00 1.0E‐04 P 1 0.1 Malononitrile 109‐77‐3 6.1E+00 n 6.2E+01 n 3.7E+00 n 7.5E‐04 3.0E‐02 H 1 0.1 Mancozeb 8018‐01‐7 1.8E+03 n 1.8E+04 n 1.1E+03 n 1.5E+00 5.0E‐03 I 1 0.1 Maneb 12427‐38‐2 3.1E+02 n 3.1E+03 n 1.8E+02 n 2.6E‐01 1.4E‐01 I 5.0E‐05 I 1 Manganese (Diet) 7439‐96‐5 2.4E‐02 S 5.0E‐05 I 0.04 Manganese (Non‐diet) 7439‐96‐5 1.8E+03 n 2.3E+04 n 5.2E‐02 n 2.2E‐01 n 8.8E+02 n 5.7E+01 9.0E‐05 H 1 0.1 Mephosfolan 950‐10‐7 5.5E+00 n 5.5E+01 n 3.3E+00 n 4.8E‐03 3.0E‐02 I 1 0.1 Mepiquat Chloride 24307‐26‐4 1.8E+03 n 1.8E+04 n 1.1E+03 n 3.6E‐01 Mercury Compounds 3.0E‐04 I 3.0E‐05 C 0.07 ~Mercuric Chloride (and other Mercury salts) 7487‐94‐7 2.3E+01 n 3.1E+02 n 3.1E‐02 n 1.3E‐01 n 1.1E+01 n 2.0E+00 3.0E‐04 I V 1 3.1E+00 ~Mercury (elemental) 7439‐97‐6 1.0E+01 ns 4.3E+01 ns 3.1E‐01 n 1.3E+00 n 6.3E‐01 n 2.0E+00 3.3E‐02 1.0E‐01 1.0E‐04 I 1 ~Methyl Mercury 22967‐92‐6 7.8E+00 n 1.0E+02 n 3.7E+00 n 8.0E‐05 I 1 0.1 ~Phenylmercuric Acetate 62‐38‐4 4.9E+00 n 4.9E+01 n 2.9E+00 n 9.1E‐04 3.0E‐05 I 1 0.1 Merphos 150‐50‐5 1.8E+00 n 1.8E+01 n 1.1E+00 n 1.1E‐01 3.0E‐05 I 1 0.1 Merphos Oxide 78‐48‐8 1.8E+00 n 1.8E+01 n 1.1E+00 n 5.4E‐03 6.0E‐02 I 1 0.1 Metalaxyl 57837‐19‐1 3.7E+03 n 3.7E+04 n 2.2E+03 n 6.1E‐01 1.0E‐04 I 7.0E‐04 H V 1 4.6E+03 Methacrylonitrile 126‐98‐7 3.2E+00 n 1.8E+01 n 7.3E‐01 n 3.1E+00 n 1.0E+00 n 2.4E‐04 5.0E‐05 I 1 0.1 Methamidophos 10265‐92‐6 3.1E+00 n 3.1E+01 n 1.8E+00 n 3.8E‐04 5.0E‐01 I 4.0E+00 C 1 0.1 Methanol 67‐56‐1 3.1E+04 n 3.1E+05 nm 4.2E+03 n 1.8E+04 n 1.8E+04 n 3.7E+00 1.0E‐03 I 1 0.1 Methidathion 950‐37‐8 6.1E+01 n 6.2E+02 n 3.7E+01 n 8.9E‐03 2.5E‐02 I 1 0.1 Methomyl 16752‐77‐5 1.5E+03 n 1.5E+04 n 9.1E+02 n 2.0E‐01 4.9E‐02 C 1.4E‐05 C 1 0.1 Methoxy‐5‐nitroaniline, 2‐ 99‐59‐2 9.9E+00 c 3.5E+01 c 1.7E‐01 c 8.8E‐01 c 1.4E+00 c 4.7E‐04 5.0E‐03 I 1 0.1 72‐43‐5 3.1E+02 n 3.1E+03 n 1.8E+02 n 4.0E+01 9.9E+00 2.2E+00 8.0E‐03 P 1.0E‐03 P 1 0.1 Methoxyethanol Acetate, 2‐ 110‐49‐6 4.9E+02 n 4.9E+03 n 1.0E+00 n 4.4E+00 n 2.9E+02 n 6.0E‐02 5.0E‐03 P 2.0E‐02 I 1 0.1 Methoxyethanol, 2‐ 109‐86‐4 3.1E+02 n 3.1E+03 n 2.1E+01 n 8.8E+01 n 1.8E+02 n 3.7E‐02 1.0E+00 X V 1 2.9E+04 Methyl Acetate 79‐20‐9 7.8E+04 ns 1.0E+06 nms 3.7E+04 n 7.5E+00 3.0E‐02 H V 1 6.8E+03 Methyl Acrylate 96‐33‐3 2.3E+03 n 3.1E+04 ns 1.1E+03 n 2.3E‐01 6.0E‐01 I 5.0E+00 I V 1 2.8E+04 Methyl Ethyl Ketone (2‐Butanone) 78‐93‐3 2.8E+04 n 2.0E+05 nms 5.2E+03 n 2.2E+04 n 7.1E+03 n 1.5E+00 1.0E‐03 X 1.0E‐03 P 2.0E‐05 X 1 0.1 Methyl Hydrazine 60‐34‐4 6.1E+01 n 6.1E+02 n 2.4E‐03 1.2E‐02 3.7E+01 n 8.3E‐03 8.0E‐02 H 3.0E+00 I V 1 3.4E+03 Methyl Isobutyl Ketone (4‐methyl‐2‐pentanone) 108‐10‐1 5.3E+03 ns 5.3E+04 ns 3.1E+03 n 1.3E+04 n 2.0E+03 n 4.5E‐01 1.0E‐03 C 1 0.1 Methyl Isocyanate 624‐83‐9 1.4E+06 nm 6.0E+06 nm 1.0E+00 n 4.4E+00 n 1.4E+00 I 7.0E‐01 I V 1 2.4E+03 Methyl Methacrylate 80‐62‐6 4.8E+03 ns 2.1E+04 ns 7.3E+02 n 3.1E+03 n 1.4E+03 n 3.1E‐01 2.5E‐04 I 1 0.1 Methyl Parathion 298‐00‐0 1.5E+01 n 1.5E+02 n 9.1E+00 n 1.5E‐02 6.0E‐02 X 1 0.1 Methyl Phosphonic Acid 993‐13‐5 3.7E+03 n 3.7E+04 n 2.2E+03 n 4.4E‐01 6.0E‐03 H 4.0E‐02 H V 1 3.8E+02 Methyl Styrene (Mixed Isomers) 25013‐15‐4 2.5E+02 n 1.6E+03 ns 4.2E+01 n 1.8E+02 n 6.0E+01 n 9.7E‐02 9.9E‐02 C 2.8E‐05 C 1 0.1 Methyl methanesulfonate 66‐27‐3 4.9E+00 c 1.7E+01 c 8.7E‐02 c 4.4E‐01 c 6.8E‐01 c 1.4E‐04 1.8E‐03 C 2.6E‐07 C 3.0E+00 I V 1 8.9E+03 Methyl tert‐Butyl Ether (MTBE) 1634‐04‐4 4.3E+01 c 2.2E+02 c 9.4E+00 c 4.7E+01 c 1.2E+01 c 2.8E‐03 2.0E‐04 X 1 0.1 Methyl‐1,4‐benzenediamine dihydrochloride, 2‐ 615‐45‐2 1.2E+01 n 1.2E+02 n 7.3E+00 n 9.0E‐03 P 2.0E‐02 X 1 0.1 Methyl‐5‐Nitroaniline, 2‐ 99‐55‐8 5.4E+01 c* 1.9E+02 c* 7.5E+00 c* 4.2E‐03 8.3E+00 C 2.4E‐03 C 1 0.1 Methyl‐N‐nitro‐N‐nitrosoguanidine, N‐ 70‐25‐7 5.9E‐02 c 2.1E‐01 c 1.0E‐03 c 5.1E‐03 c 8.1E‐03 c 2.8E‐06 1.3E‐01 C 3.7E‐05 C 1 0.1 Methylaniline Hydrochloride, 2‐ 636‐21‐5 3.7E+00 c 1.3E+01 c 6.6E‐02 c 3.3E‐01 c 5.2E‐01 c 2.2E‐04 1.0E‐02 A 1 0.1 Methylarsonic acid 124‐58‐3 6.1E+02 n 6.2E+03 n 3.7E+02 n 2.0E‐04 X 1 0.1 monohydrochloride, 2‐ 74612‐12‐7 1.2E+01 n 1.2E+02 n 7.3E+00 n 2.0E‐04 X 1 0.1 sulfate, 2‐ 615‐50‐9 1.2E+01 n 1.2E+02 n 7.3E+00 n 2.2E+01 C 6.3E‐03 C M 1 0.1 3‐ 56‐49‐5 5.2E‐03 c 7.8E‐02 c 1.5E‐04 c 1.9E‐03 c 9.8E‐04 c 1.9E‐03 7.5E‐03 I 4.7E‐07 I 6.0E‐02 I 1.0E+00 A V 1 3.3E+03 Methylene Chloride 75‐09‐2 1.1E+01 c 5.3E+01 c 5.2E+00 c 2.6E+01 c 4.8E+00 c 5.0E+00 1.2E‐03 1.3E‐03 1.0E‐01 P 4.3E‐04 C 2.0E‐03 P M 1 0.1 Methylene‐bis(2‐chloroaniline), 4,4'‐ 101‐14‐4 1.2E+00 c 1.7E+01 c* 2.2E‐03 c 2.9E‐02 c 2.2E‐01 c 2.5E‐03 4.6E‐02 I 1.3E‐05 C 1 0.1 Methylene‐bis(N,N‐dimethyl) Aniline, 4,4'‐ 101‐61‐1 1.1E+01 c 3.7E+01 c 1.9E‐01 c 9.4E‐01 c 1.5E+00 c 8.1E‐03 1.6E+00 C 4.6E‐04 C 2.0E‐02 C 1 0.1 Methylenebisbenzenamine, 4,4'‐ 101‐77‐9 3.0E‐01 c 1.1E+00 c 5.3E‐03 c 2.7E‐02 c 4.2E‐02 c 1.9E‐04 6.0E‐04 I 1 0.1 Methylenediphenyl Diisocyanate 101‐68‐8 8.5E+05 nm 3.6E+06 nm 6.3E‐01 n 2.6E+00 n 7.0E‐02 H V 1 5.0E+02 Alpha‐ 98‐83‐9 5.5E+03 ns 7.2E+04 ns 2.6E+03 n 4.1E+00 1.5E‐01 I 1 0.1 Metolachlor 51218‐45‐2 9.2E+03 n 9.2E+04 n 5.5E+03 n 6.4E+00 2.5E‐02 I 1 0.1 Metribuzin 21087‐64‐9 1.5E+03 n 1.5E+04 n 9.1E+02 n 2.8E‐01 3.0E+00 P 1 0.1 Mineral oils 8012‐95‐1 1.8E+05 nm 1.8E+06 nm 1.1E+05 n 4.3E+03 1.8E+01 C 5.1E‐03 C 2.0E‐04 I 1 0.1 Mirex 2385‐85‐5 2.7E‐02 c 9.6E‐02 c 4.8E‐04 c 2.4E‐03 c 3.7E‐03 c 2.7E‐03 2.0E‐03 I 1 0.1 Molinate 2212‐67‐1 1.2E+02 n 1.2E+03 n 7.3E+01 n 4.1E‐02 5.0E‐03 I 1 Molybdenum 7439‐98‐7 3.9E+02 n 5.1E+03 n 1.8E+02 n 3.7E+00 1.0E‐01 I 1 Monochloramine 10599‐90‐3 7.8E+03 n 1.0E+05 nm 3.7E+03 n 2.0E‐03 P 1 0.1 Monomethylaniline 100‐61‐8 1.2E+02 n 1.2E+03 n 7.3E+01 n 2.7E‐02 3.0E‐04 X 1 0.1 N,N'‐Diphenyl‐1,4‐benzenediamine 74‐31‐7 1.8E+01 n 1.8E+02 n 1.1E+01 n 1.1E+00 2.0E‐03 I 1 0.1 Naled 300‐76‐5 1.2E+02 n 1.2E+03 n 7.3E+01 n 3.3E‐02 Page 7 of 12 ---PAGE BREAK--- Regional Screening Level (RSL) Summary Table June 2011 SFO (mg/kg‐day)‐1 k e y IUR (ug/m3)‐1 k e y RfDo (mg/kg‐day) k e y RfCi (mg/m3) k e y v o c muta‐ gen GIABS ABS Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) key Industrial Soil (mg/kg) key Resident Air (ug/m3) key Industrial Air (ug/m3) key Tapwater (ug/L) key MCL (ug/L) Risk‐based SSL (mg/kg) MCL‐based SSL (mg/kg) Key: I = IRIS; P = A = ATSDR; C = Cal EPA; X = Appendix; H = HEAST; J = New Jersey; Y = New York; O = EPA Office of Water; E = Environmental Criteria and Assessment Office; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ; c = cancer; * = where: n SL < 100X c SL; = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit (See User Guide); s = Concentration may exceed Csat (See User Guide); SSL values are based on DAF=1 Toxicity and Chemical‐specific Information Contaminant Screening Levels Protection of Ground Water SSLs 3.0E‐02 X 1.0E‐01 P V 1 Naphtha, High Flash Aromatic (HFAN) 64724‐95‐6 2.3E+03 n 3.1E+04 n 1.0E+02 n 4.4E+02 n 1.8E+02 n 1.8E+00 C 0.0E+00 C 1 0.1 2‐ 91‐59‐8 2.7E‐01 c 9.6E‐01 c 3.7E‐02 c 1.9E‐04 1.0E‐01 I 1 0.1 Napropamide 15299‐99‐7 6.1E+03 n 6.2E+04 n 3.7E+03 n 2.4E+01 5.0E‐02 C 5.0E‐05 C 0.04 Nickel Carbonyl 13463‐39‐3 3.7E+03 n 4.4E+04 n 5.2E‐02 n 2.2E‐01 n 1.8E+03 n 5.0E‐02 C 1.0E‐04 C 1 Nickel Oxide 1313‐99‐1 3.8E+03 n 4.7E+04 n 1.0E‐01 n 4.4E‐01 n 1.8E+03 n 2.4E‐04 I 5.0E‐02 C 5.0E‐05 C 0.04 Nickel Refinery Dust NA 3.7E+03 n 4.4E+04 n 1.0E‐02 5.1E‐02 1.8E+03 n 2.7E+02 2.6E‐04 C 2.0E‐02 I 9.0E‐05 A 0.04 Nickel Soluble Salts 7440‐02‐0 1.5E+03 n 2.0E+04 n 9.4E‐03 c* 4.7E‐02 7.3E+02 n 4.8E+01 1.7E+00 C 4.8E‐04 I 5.0E‐02 C 5.0E‐05 C 0.04 Nickel Subsulfide 12035‐72‐2 3.8E‐01 c 1.7E+00 c 5.1E‐03 c* 2.6E‐02 4.0E‐02 c 1.6E+00 I 1 Nitrate 14797‐55‐8 1.3E+05 nm 1.6E+06 nm 5.8E+04 n 1.0E+04 1.0E‐01 I 1 Nitrite 14797‐65‐0 7.8E+03 n 1.0E+05 nm 3.7E+03 n 1.0E+03 1.0E‐02 X 5.0E‐05 X 1 0.1 Nitroaniline, 2‐ 88‐74‐4 6.1E+02 n 6.0E+03 n 5.2E‐02 n 2.2E‐01 n 3.7E+02 n 1.5E‐01 2.0E‐02 P 4.0E‐03 P 6.0E‐03 P 1 0.1 Nitroaniline, 4‐ 100‐01‐6 2.4E+01 c* 8.6E+01 c* 6.3E+00 n 2.6E+01 n 3.4E+00 c* 1.4E‐03 4.0E‐05 I 2.0E‐03 I 9.0E‐03 I V 1 3.1E+03 Nitrobenzene 98‐95‐3 4.8E+00 c* 2.4E+01 c* 6.1E‐02 c 3.1E‐01 c 1.2E‐01 c 7.9E‐05 3.0E+03 P 1 0.1 Nitrocellulose 9004‐70‐0 1.8E+08 nm 1.8E+09 nm 1.1E+08 n 2.4E+04 7.0E‐02 H 1 0.1 Nitrofurantoin 67‐20‐9 4.3E+03 n 4.3E+04 n 2.6E+03 n 1.1E+00 1.3E+00 C 3.7E‐04 C 1 0.1 Nitrofurazone 59‐87‐0 3.7E‐01 c 1.3E+00 c 6.6E‐03 c 3.3E‐02 c 5.2E‐02 c 4.7E‐05 1.7E‐02 P 1.0E‐04 P 1 0.1 Nitroglycerin 55‐63‐0 6.1E+00 n 6.2E+01 n 3.7E+00 n 1.6E‐03 1.0E‐01 I 1 0.1 Nitroguanidine 556‐88‐7 6.1E+03 n 6.2E+04 n 3.7E+03 n 8.8E‐01 9.0E‐06 P 2.0E‐02 P V 1 1.8E+04 Nitromethane 75‐52‐5 4.9E+00 c* 2.5E+01 c* 2.7E‐01 c* 1.4E+00 c* 5.4E‐01 c* 1.2E‐04 2.7E‐03 H 2.0E‐02 I V 1 4.9E+03 Nitropropane, 2‐ 79‐46‐9 1.3E‐02 c 6.4E‐02 c 9.0E‐04 c 4.5E‐03 c 1.8E‐03 c 4.7E‐07 2.7E+01 C 7.7E‐03 C M 1 0.1 Nitroso‐N‐ethylurea, N‐ 759‐73‐9 4.3E‐03 c 6.4E‐02 c 1.2E‐04 c 1.6E‐03 c 8.0E‐04 c 1.9E‐07 1.2E+02 C 3.4E‐02 C M 1 0.1 Nitroso‐N‐methylurea, N‐ 684‐93‐5 9.6E‐04 c 1.4E‐02 c 2.8E‐05 c 3.6E‐04 c 1.8E‐04 c 4.0E‐08 5.4E+00 I 1.6E‐03 I V 1 7.1E+03 Nitroso‐di‐N‐butylamine, N‐ 924‐16‐3 8.7E‐02 c 4.0E‐01 c 1.5E‐03 c 7.7E‐03 c 2.4E‐03 c 5.0E‐06 7.0E+00 I 2.0E‐03 C 1 0.1 Nitroso‐di‐N‐propylamine, N‐ 621‐64‐7 6.9E‐02 c 2.5E‐01 c 1.2E‐03 c 6.1E‐03 c 9.6E‐03 c 7.2E‐06 2.8E+00 I 8.0E‐04 C 1 0.1 Nitrosodiethanolamine, N‐ 1116‐54‐7 1.7E‐01 c 6.2E‐01 c 3.0E‐03 c 1.5E‐02 c 2.4E‐02 c 4.9E‐06 1.5E+02 I 4.3E‐02 I M 1 0.1 Nitrosodiethylamine, N‐ 55‐18‐5 7.7E‐04 c 1.1E‐02 c 2.2E‐05 c 2.9E‐04 c 1.4E‐04 c 5.3E‐08 5.1E+01 I 1.4E‐02 I 8.0E‐06 P 4.0E‐05 X M 1 0.1 Nitrosodimethylamine, N‐ 62‐75‐9 2.3E‐03 c 3.4E‐02 c 6.9E‐05 c 8.8E‐04 c 4.2E‐04 c 1.0E‐07 4.9E‐03 I 2.6E‐06 C 1 0.1 Nitrosodiphenylamine, N‐ 86‐30‐6 9.9E+01 c 3.5E+02 c 9.4E‐01 c 4.7E+00 c 1.4E+01 c 7.5E‐02 2.2E+01 I 6.3E‐03 C 1 0.1 Nitrosomethylethylamine, N‐ 10595‐95‐6 2.2E‐02 c 7.8E‐02 c 3.9E‐04 c 1.9E‐03 c 3.1E‐03 c 8.8E‐07 6.7E+00 C 1.9E‐03 C 1 0.1 Nitrosomorpholine 59‐89‐2 7.3E‐02 c 2.6E‐01 c 1.3E‐03 c 6.5E‐03 c 1.0E‐02 c 2.5E‐06 9.4E+00 C 2.7E‐03 C 1 0.1 Nitrosopiperidine 100‐75‐4 5.2E‐02 c 1.8E‐01 c 9.0E‐04 c 4.5E‐03 c 7.2E‐03 c 3.8E‐06 2.1E+00 I 6.1E‐04 I 1 0.1 Nitrosopyrrolidine, N‐ 930‐55‐2 2.3E‐01 c 8.2E‐01 c 4.0E‐03 c 2.0E‐02 c 3.2E‐02 c 1.2E‐05 1.0E‐04 X 1 0.1 Nitrotoluene, m‐ 99‐08‐1 6.1E+00 n 6.2E+01 n 3.7E+00 n 3.4E‐03 2.2E‐01 P 9.0E‐04 P V 1 1.5E+03 Nitrotoluene, o‐ 88‐72‐2 2.9E+00 c* 1.3E+01 c* 3.1E‐01 c 2.9E‐04 1.6E‐02 P 4.0E‐03 P 1 0.1 Nitrotoluene, p‐ 99‐99‐0 3.0E+01 1.1E+02 c* 4.2E+00 c* 3.9E‐03 3.0E‐04 X 2.0E‐01 P V 1 6.9E+00 Nonane, n‐ 111‐84‐2 2.1E+01 ns 2.3E+02 ns 2.1E+02 n 8.8E+02 n 1.1E+01 n 1.5E‐01 4.0E‐02 I 1 0.1 Norflurazon 27314‐13‐2 2.4E+03 n 2.5E+04 n 1.5E+03 n 9.4E+00 7.0E‐04 I 1 0.1 Nustar 85509‐19‐9 4.3E+01 n 4.3E+02 n 2.6E+01 n 4.1E+00 3.0E‐03 I 1 0.1 Octabromodiphenyl Ether 32536‐52‐0 1.8E+02 n 1.8E+03 n 1.1E+02 n 2.2E+01 5.0E‐02 I 1 0.006 Octahydro‐1,3,5,7‐tetranitro‐1,3,5,7‐tetra (HMX) 2691‐41‐0 3.8E+03 n 4.9E+04 n 1.8E+03 n 2.3E+00 2.0E‐03 H 1 0.1 152‐16‐9 1.2E+02 n 1.2E+03 n 7.3E+01 n 1.8E‐02 5.0E‐02 I 1 0.1 Oryzalin 19044‐88‐3 3.1E+03 n 3.1E+04 n 1.8E+03 n 3.4E+00 5.0E‐03 I 1 0.1 Oxadiazon 19666‐30‐9 3.1E+02 n 3.1E+03 n 1.8E+02 n 1.9E+00 2.5E‐02 I 1 0.1 Oxamyl 23135‐22‐0 1.5E+03 n 1.5E+04 n 9.1E+02 n 2.0E+02 2.0E‐01 4.4E‐02 1.3E‐02 I 1 0.1 Paclobutrazol 76738‐62‐0 7.9E+02 n 8.0E+03 n 4.7E+02 n 9.7E‐01 4.5E‐03 I 1 0.1 Paraquat Dichloride 1910‐42‐5 2.7E+02 n 2.8E+03 n 1.6E+02 n 2.3E+00 6.0E‐03 H 1 0.1 Parathion 56‐38‐2 3.7E+02 n 3.7E+03 n 2.2E+02 n 1.1E+00 5.0E‐02 H 1 0.1 Pebulate 1114‐71‐2 3.1E+03 n 3.1E+04 n 1.8E+03 n 1.5E+00 4.0E‐02 I 1 0.1 Pendimethalin 40487‐42‐1 2.4E+03 n 2.5E+04 n 1.5E+03 n 1.7E+01 2.0E‐03 I 1 0.1 Pentabromodiphenyl Ether 32534‐81‐9 1.2E+02 n 1.2E+03 n 7.3E+01 n 3.2E+00 1.0E‐04 I 1 0.1 Pentabromodiphenyl ether, 2,2',4,4',5‐ (BDE‐99) 60348‐60‐9 6.1E+00 n 6.2E+01 n 3.7E+00 n 1.6E‐01 8.0E‐04 I 1 0.1 Pentachlorobenzene 608‐93‐5 4.9E+01 n 4.9E+02 n 2.9E+01 n 2.2E‐01 9.0E‐02 P 1 0.1 Pentachloroethane 76‐01‐7 5.4E+00 c 1.9E+01 c 7.5E‐01 c 3.6E‐04 2.6E‐01 H 3.0E‐03 I 1 0.1 Pentachloronitrobenzene 82‐68‐8 1.9E+00 c* 6.6E+00 c 2.6E‐01 c 3.2E‐03 4.0E‐01 I 5.1E‐06 C 5.0E‐03 I 1 0.25 Pentachlorophenol 87‐86‐5 8.9E‐01 c 2.7E+00 c 4.8E‐01 c 2.4E+00 c 1.7E‐01 c 1.0E+00 1.7E‐03 1.0E‐02 4.0E‐03 X 2.0E‐03 P 1 0.1 tetranitrate (PETN) 78‐11‐5 1.2E+02 4.3E+02 1.7E+01 2.5E‐02 1.0E+00 P V 1 3.9E+02 Pentane, n‐ 109‐66‐0 8.7E+02 ns 3.7E+03 ns 1.0E+03 n 4.4E+03 n 2.1E+03 n 1.0E+01 Perchlorates 7.0E‐04 I 1 ~Ammonium Perchlorate 7790‐98‐9 5.5E+01 n 7.2E+02 n 2.6E+01 n 7.0E‐04 I 1 ~Lithium Perchlorate 7791‐03‐9 5.5E+01 n 7.2E+02 n 2.6E+01 n 7.0E‐04 I 1 ~Perchlorate and Perchlorate Salts 14797‐73‐0 5.5E+01 n 7.2E+02 n 2.6E+01 n 1.5E+01(F) 7.0E‐04 I 1 ~Potassium Perchlorate 7778‐74‐7 5.5E+01 n 7.2E+02 n 2.6E+01 n 7.0E‐04 I 1 ~Sodium Perchlorate 7601‐89‐0 5.5E+01 n 7.2E+02 n 2.6E+01 n 5.0E‐02 I 1 0.1 Permethrin 52645‐53‐1 3.1E+03 n 3.1E+04 n 1.8E+03 n 4.3E+02 2.2E‐03 C 6.3E‐07 C 1 0.1 Phenacetin 62‐44‐2 2.2E+02 c 7.8E+02 c 3.9E+00 c 1.9E+01 c 3.1E+01 c 8.6E‐03 Page 8 of 12 ---PAGE BREAK--- Regional Screening Level (RSL) Summary Table June 2011 SFO (mg/kg‐day)‐1 k e y IUR (ug/m3)‐1 k e y RfDo (mg/kg‐day) k e y RfCi (mg/m3) k e y v o c muta‐ gen GIABS ABS Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) key Industrial Soil (mg/kg) key Resident Air (ug/m3) key Industrial Air (ug/m3) key Tapwater (ug/L) key MCL (ug/L) Risk‐based SSL (mg/kg) MCL‐based SSL (mg/kg) Key: I = IRIS; P = A = ATSDR; C = Cal EPA; X = Appendix; H = HEAST; J = New Jersey; Y = New York; O = EPA Office of Water; E = Environmental Criteria and Assessment Office; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ; c = cancer; * = where: n SL < 100X c SL; = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit (See User Guide); s = Concentration may exceed Csat (See User Guide); SSL values are based on DAF=1 Toxicity and Chemical‐specific Information Contaminant Screening Levels Protection of Ground Water SSLs 2.5E‐01 I 1 0.1 Phenmedipham 13684‐63‐4 1.5E+04 n 1.5E+05 nm 9.1E+03 n 4.9E+01 3.0E‐01 I 2.0E‐01 C 1 0.1 Phenol 108‐95‐2 1.8E+04 n 1.8E+05 nm 2.1E+02 n 8.8E+02 n 1.1E+04 n 6.3E+00 5.0E‐04 X 1 0.1 Phenothiazine 92‐84‐2 3.1E+01 n 3.1E+02 n 1.8E+01 n 6.0E‐03 I 1 0.1 Phenylenediamine, m‐ 108‐45‐2 3.7E+02 n 3.7E+03 n 2.2E+02 n 5.9E‐02 4.7E‐02 H 1 0.1 Phenylenediamine, o‐ 95‐54‐5 1.0E+01 c 3.7E+01 c 1.4E+00 c 3.8E‐04 1.9E‐01 H 1 0.1 Phenylenediamine, p‐ 106‐50‐3 1.2E+04 n 1.2E+05 nm 6.9E+03 n 1.9E+00 1.9E‐03 H 1 0.1 2‐ 90‐43‐7 2.5E+02 c 8.9E+02 c 3.5E+01 c 4.7E‐01 2.0E‐04 H 1 0.1 Phorate 298‐02‐2 1.2E+01 n 1.2E+02 n 7.3E+00 n 8.2E‐03 3.0E‐04 I V 1 1.6E+03 Phosgene 75‐44‐5 3.3E‐01 n 1.4E+00 n 3.1E‐01 n 1.3E+00 n 2.0E‐02 I 1 0.1 Phosmet 732‐11‐6 1.2E+03 n 1.2E+04 n 7.3E+02 n 1.6E‐01 Phosphates, Inorganic 4.9E+01 P 1 ~Aluminum metaphosphate 13776‐88‐0 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Ammonium polyphosphate 68333‐79‐9 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Calcium pyrophosphate 7790‐76‐3 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Diammonium phosphate 7783‐28‐0 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Dicalcium phosphate 7757‐93‐9 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Dimagnesium phosphate 7782‐75‐4 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Dipotassium phosphate 7758‐11‐4 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Disodium phosphate 7558‐79‐4 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Monoaluminum phosphate 13530‐50‐2 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Monoammonium phosphate 7722‐76‐1 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Monocalcium phosphate 7758‐23‐8 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Monomagnesium phosphate 7757‐86‐0 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Monopotassium phosphate 7778‐77‐0 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Monosodium phosphate 7558‐80‐7 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Polyphosphoric acid 8017‐16‐1 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Potassium tripolyphosphate 13845‐36‐8 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Sodium acid pyrophosphate 7758‐16‐9 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Sodium aluminum phosphate (acidic) 7785‐88‐8 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Sodium aluminum phosphate 10279‐59‐1 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Sodium aluminum phosphate (tetrahydrate) 10305‐76‐7 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Sodium hexametaphosphate 10124‐56‐8 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Sodium polyphosphate 68915‐31‐1 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Sodium trimetaphosphate 7785‐84‐4 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Sodium tripolyphosphate 7758‐29‐4 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Tetrapotassium phosphate 7320‐34‐5 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Tetrasodium pyrophosphate 7722‐88‐5 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Trialuminum sodium tetra decahydrogenoctaorthophosphate (dihydrate) 15136‐87‐5 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Tricalcium phosphate 7758‐87‐4 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Trimagnesium phosphate 7757‐87‐1 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Tripotassium phosphate 7778‐53‐2 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 4.9E+01 P 1 ~Trisodium phosphate 7601‐54‐9 3.8E+06 nm 5.0E+07 nm 1.8E+06 n 3.0E‐04 I 3.0E‐04 I 1 Phosphine 7803‐51‐2 2.3E+01 n 3.1E+02 n 3.1E‐01 n 1.3E+00 n 1.1E+01 n 4.9E+01 P 1.0E‐02 I 1 Phosphoric Acid 7664‐38‐2 3.0E+06 nm 2.7E+07 nm 1.0E+01 n 4.4E+01 n 1.8E+06 n 2.0E‐05 I 1 Phosphorus, White 7723‐14‐0 1.6E+00 n 2.0E+01 n 7.3E‐01 n 2.7E‐03 1.0E+00 H 1 0.1 Phthalic Acid, P‐ 100‐21‐0 6.1E+04 n 6.2E+05 nm 3.7E+04 n 1.3E+01 2.0E+00 I 2.0E‐02 C 1 0.1 Phthalic 85‐44‐9 1.2E+05 nm 1.2E+06 nm 2.1E+01 n 8.8E+01 n 7.3E+04 n 1.6E+01 7.0E‐02 I 1 0.1 Picloram 1918‐02‐1 4.3E+03 n 4.3E+04 n 2.6E+03 n 5.0E+02 7.1E‐01 1.4E‐01 1.0E‐04 X 1 0.1 Picramic Acid (2‐Amino‐4,6‐dinitrophenol) 96‐91‐3 6.1E+00 n 6.2E+01 n 3.7E+00 n 2.4E‐03 1.0E‐02 I 1 0.1 Pirimiphos, Methyl 29232‐93‐7 6.1E+02 n 6.2E+03 n 3.7E+02 n 3.5E‐01 3.0E+01 C 8.6E‐03 C 7.0E‐06 H 1 0.1 Polybrominated Biphenyls 59536‐65‐1 1.6E‐02 c* 5.7E‐02 c* 2.8E‐04 c 1.4E‐03 c 2.2E‐03 c Biphenyls (PCBs) 7.0E‐02 S 2.0E‐05 S 7.0E‐05 I 1 0.14 ~Aroclor 1016 12674‐11‐2 3.9E+00 n 2.1E+01 1.2E‐01 c 6.1E‐01 c 9.6E‐01 9.2E‐02 2.0E+00 S 5.7E‐04 S V 1 0.14 7.6E+02 ~Aroclor 1221 11104‐28‐2 1.4E‐01 c 5.4E‐01 c 4.3E‐03 c 2.1E‐02 c 6.8E‐03 c 1.2E‐04 2.0E+00 S 5.7E‐04 S V 1 0.14 7.3E+01 ~Aroclor 1232 11141‐16‐5 1.4E‐01 c 5.4E‐01 c 4.3E‐03 c 2.1E‐02 c 6.8E‐03 c 1.2E‐04 2.0E+00 S 5.7E‐04 S 1 0.14 ~Aroclor 1242 53469‐21‐9 2.2E‐01 c 7.4E‐01 c 4.3E‐03 c 2.1E‐02 c 3.4E‐02 c 5.3E‐03 2.0E+00 S 5.7E‐04 S 1 0.14 ~Aroclor 1248 12672‐29‐6 2.2E‐01 c 7.4E‐01 c 4.3E‐03 c 2.1E‐02 c 3.4E‐02 c 5.2E‐03 2.0E+00 S 5.7E‐04 S 2.0E‐05 I 1 0.14 ~Aroclor 1254 11097‐69‐1 2.2E‐01 7.4E‐01 c* 4.3E‐03 c 2.1E‐02 c 3.4E‐02 c* 8.8E‐03 2.0E+00 S 5.7E‐04 S 1 0.14 ~Aroclor 1260 11096‐82‐5 2.2E‐01 c 7.4E‐01 c 4.3E‐03 c 2.1E‐02 c 3.4E‐02 c 2.4E‐02 3.9E+00 E 1.1E‐03 E 3.3E‐05 E 1.3E‐03 E 1 0.14 ~Heptachlorobiphenyl, 2,3,3',4,4',5,5'‐ (PCB 189) 39635‐31‐9 1.1E‐01 c* 3.8E‐01 c* 2.1E‐03 c 1.1E‐02 c 1.7E‐02 c* 1.2E‐02 3.9E+00 E 1.1E‐03 E 3.3E‐05 E 1.3E‐03 E 1 0.14 ~Hexachlorobiphenyl, 2,3',4,4',5,5'‐ (PCB 167) 52663‐72‐6 1.1E‐01 c* 3.8E‐01 c* 2.1E‐03 c 1.1E‐02 c 1.7E‐02 c* 7.2E‐03 3.9E+00 E 1.1E‐03 E 3.3E‐05 E 1.3E‐03 E 1 0.14 ~Hexachlorobiphenyl, 2,3,3',4,4',5'‐ (PCB 157) 69782‐90‐7 1.1E‐01 c* 3.8E‐01 c* 2.1E‐03 c 1.1E‐02 c 1.7E‐02 c* 7.4E‐03 3.9E+00 E 1.1E‐03 E 3.3E‐05 E 1.3E‐03 E 1 0.14 ~Hexachlorobiphenyl, 2,3,3',4,4',5‐ (PCB 156) 38380‐08‐4 1.1E‐01 c* 3.8E‐01 c* 2.1E‐03 c 1.1E‐02 c 1.7E‐02 c* 7.4E‐03 3.9E+03 E 1.1E+00 E 3.3E‐08 E 1.3E‐06 E 1 0.14 ~Hexachlorobiphenyl, 3,3',4,4',5,5'‐ (PCB 169) 32774‐16‐6 1.1E‐04 c* 3.8E‐04 c* 2.1E‐06 c 1.1E‐05 c 1.7E‐05 c* 7.2E‐06 3.9E+00 E 1.1E‐03 E 3.3E‐05 E 1.3E‐03 E 1 0.14 ~Pentachlorobiphenyl, 2',3,4,4',5‐ (PCB 123) 65510‐44‐3 1.1E‐01 c* 3.8E‐01 c* 2.1E‐03 c 1.1E‐02 c 1.7E‐02 c* 4.5E‐03 Page 9 of 12 ---PAGE BREAK--- Regional Screening Level (RSL) Summary Table June 2011 SFO (mg/kg‐day)‐1 k e y IUR (ug/m3)‐1 k e y RfDo (mg/kg‐day) k e y RfCi (mg/m3) k e y v o c muta‐ gen GIABS ABS Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) key Industrial Soil (mg/kg) key Resident Air (ug/m3) key Industrial Air (ug/m3) key Tapwater (ug/L) key MCL (ug/L) Risk‐based SSL (mg/kg) MCL‐based SSL (mg/kg) Key: I = IRIS; P = A = ATSDR; C = Cal EPA; X = Appendix; H = HEAST; J = New Jersey; Y = New York; O = EPA Office of Water; E = Environmental Criteria and Assessment Office; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ; c = cancer; * = where: n SL < 100X c SL; = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit (See User Guide); s = Concentration may exceed Csat (See User Guide); SSL values are based on DAF=1 Toxicity and Chemical‐specific Information Contaminant Screening Levels Protection of Ground Water SSLs 3.9E+00 E 1.1E‐03 E 3.3E‐05 E 1.3E‐03 E 1 0.14 ~Pentachlorobiphenyl, 2,3',4,4',5‐ (PCB 118) 31508‐00‐6 1.1E‐01 c* 3.8E‐01 c* 2.1E‐03 c 1.1E‐02 c 1.7E‐02 c* 4.4E‐03 3.9E+00 E 1.1E‐03 E 3.3E‐05 E 1.3E‐03 E 1 0.14 ~Pentachlorobiphenyl, 2,3,3',4,4'‐ (PCB 105) 32598‐14‐4 1.1E‐01 c* 3.8E‐01 c* 2.1E‐03 c 1.1E‐02 c 1.7E‐02 c* 4.5E‐03 3.9E+00 E 1.1E‐03 E 3.3E‐05 E 1.3E‐03 E 1 0.14 ~Pentachlorobiphenyl, 2,3,4,4',5‐ (PCB 114) 74472‐37‐0 1.1E‐01 c* 3.8E‐01 c* 2.1E‐03 c 1.1E‐02 c 1.7E‐02 c* 4.5E‐03 1.3E+04 E 3.8E+00 E 1.0E‐08 E 4.0E‐07 E 1 0.14 ~Pentachlorobiphenyl, 3,3',4,4',5‐ (PCB 126) 57465‐28‐8 3.4E‐05 c* 1.1E‐04 c* 6.4E‐07 c 3.2E‐06 c 5.2E‐06 c* 1.3E‐06 2.0E+00 I 5.7E‐04 I 1 0.14 Biphenyls (high risk) 1336‐36‐3 2.2E‐01 c 7.4E‐01 c 4.3E‐03 c 2.1E‐02 c 4.0E‐01 I 1.0E‐04 I 1 0.14 Biphenyls (low risk) 1336‐36‐3 2.4E‐02 c 1.2E‐01 c 1.7E‐01 c 5.0E‐01 2.6E‐02 7.8E‐02 7.0E‐02 I 2.0E‐05 I 1 0.14 Biphenyls (lowest risk) 1336‐36‐3 1.2E‐01 c 6.1E‐01 c 1.3E+01 E 3.8E‐03 E 1.0E‐05 E 4.0E‐04 E 1 0.14 ~Tetrachlorobiphenyl, 3,3',4,4'‐ (PCB 77) 32598‐13‐3 3.4E‐02 c* 1.1E‐01 c* 6.4E‐04 c 3.2E‐03 c 5.2E‐03 c* 8.1E‐04 3.9E+01 E 1.1E‐02 E 3.3E‐06 E 1.3E‐04 E 1 0.14 ~Tetrachlorobiphenyl, 3,4,4',5‐ (PCB 81) 70362‐50‐4 1.1E‐02 c* 3.8E‐02 c* 2.1E‐04 c 1.1E‐03 c 1.7E‐03 c* 2.7E‐04 6.0E‐04 I 1 0.1 Polymeric Methylene Diphenyl Diisocyanate (PMDI) 9016‐87‐9 8.5E+05 nm 3.6E+06 nm 6.3E‐01 n 2.6E+00 n Polynuclear Aromatic Hydrocarbons (PAHs) 6.0E‐02 I V 1 0.13 ~Acenaphthene 83‐32‐9 3.4E+03 n 3.3E+04 n 2.2E+03 n 2.2E+01 3.0E‐01 I V 1 0.13 ~Anthracene 120‐12‐7 1.7E+04 n 1.7E+05 nm 1.1E+04 n 3.6E+02 7.3E‐01 E 1.1E‐04 C M 1 0.13 ~Benz[a]anthracene 56‐55‐3 1.5E‐01 c 2.1E+00 c 8.7E‐03 c 1.1E‐01 c 2.9E‐02 c 1.0E‐02 1.2E+00 C 1.1E‐04 C 1 0.13 ~Benzo(j)fluoranthene 205‐82‐3 3.8E‐01 c 1.3E+00 c 2.2E‐02 c 1.1E‐01 c 5.6E‐02 c 6.7E‐02 7.3E+00 I 1.1E‐03 C M 1 0.13 ~Benzo[a]pyrene 50‐32‐8 1.5E‐02 c 2.1E‐01 c 8.7E‐04 c 1.1E‐02 c 2.9E‐03 c 2.0E‐01 3.5E‐03 2.4E‐01 7.3E‐01 E 1.1E‐04 C M 1 0.13 ~Benzo[b]fluoranthene 205‐99‐2 1.5E‐01 c 2.1E+00 c 8.7E‐03 c 1.1E‐01 c 2.9E‐02 c 3.5E‐02 7.3E‐02 E 1.1E‐04 C M 1 0.13 ~Benzo[k]fluoranthene 207‐08‐9 1.5E+00 c 2.1E+01 c 8.7E‐03 c 1.1E‐01 c 2.9E‐01 c 3.5E‐01 7.3E‐03 E 1.1E‐05 C M 1 0.13 218‐01‐9 1.5E+01 c 2.1E+02 c 8.7E‐02 c 1.1E+00 c 2.9E+00 c 1.1E+00 7.3E+00 E 1.2E‐03 C M 1 0.13 ~Dibenz[a,h]anthracene 53‐70‐3 1.5E‐02 c 2.1E‐01 c 8.0E‐04 c 1.0E‐02 c 2.9E‐03 c 1.1E‐02 1.2E+01 C 1.1E‐03 C 1 0.13 ~Dibenzo(a,e)pyrene 192‐65‐4 3.8E‐02 c 1.3E‐01 c 2.2E‐03 c 1.1E‐02 c 5.6E‐03 c 7.3E‐02 2.5E+02 C 7.1E‐02 C M 1 0.13 7,12‐ 57‐97‐6 4.3E‐04 c 6.2E‐03 c 1.4E‐05 c 1.7E‐04 c 8.6E‐05 c 8.5E‐05 4.0E‐02 I 1 0.13 ~Fluoranthene 206‐44‐0 2.3E+03 n 2.2E+04 n 1.5E+03 n 1.6E+02 4.0E‐02 I V 1 0.13 ~Fluorene 86‐73‐7 2.3E+03 n 2.2E+04 n 1.5E+03 n 2.7E+01 7.3E‐01 E 1.1E‐04 C M 1 0.13 ~Indeno[1,2,3‐cd]pyrene 193‐39‐5 1.5E‐01 c 2.1E+00 c 8.7E‐03 c 1.1E‐01 c 2.9E‐02 c 1.2E‐01 2.9E‐02 P 7.0E‐02 A V 1 3.9E+02 1‐ 90‐12‐0 2.2E+01 c 9.9E+01 c 2.3E+00 c 1.2E‐02 4.0E‐03 I V 1 3.7E+02 2‐ 91‐57‐6 3.1E+02 n 4.1E+03 ns 1.5E+02 n 7.5E‐01 3.4E‐05 C 2.0E‐02 I 3.0E‐03 I V 1 0.13 ~Naphthalene 91‐20‐3 3.6E+00 c* 1.8E+01 c* 7.2E‐02 c* 3.6E‐01 c* 1.4E‐01 c* 4.7E‐04 1.2E+00 C 1.1E‐04 C 1 0.13 ~Nitropyrene, 4‐ 57835‐92‐4 3.8E‐01 c 1.3E+00 c 2.2E‐02 c 1.1E‐01 c 5.6E‐02 c 9.7E‐03 3.0E‐02 I V 1 0.13 ~Pyrene 129‐00‐0 1.7E+03 n 1.7E+04 n 1.1E+03 n 1.2E+02 1.5E‐01 I 9.0E‐03 I 1 0.1 Prochloraz 67747‐09‐5 3.2E+00 c 1.1E+01 c 4.5E‐01 c 2.3E‐03 6.0E‐03 H 1 0.1 Profluralin 26399‐36‐0 3.7E+02 n 3.7E+03 n 2.2E+02 n 1.3E+01 1.5E‐02 I 1 0.1 Prometon 1610‐18‐0 9.2E+02 n 9.2E+03 n 5.5E+02 n 2.6E‐01 4.0E‐03 I 1 0.1 Prometryn 7287‐19‐6 2.4E+02 n 2.5E+03 n 1.5E+02 n 2.2E‐01 1.3E‐02 I 1 0.1 Propachlor 1918‐16‐7 7.9E+02 n 8.0E+03 n 4.7E+02 n 2.9E‐01 5.0E‐03 I 1 0.1 Propanil 709‐98‐8 3.1E+02 n 3.1E+03 n 1.8E+02 n 1.0E‐01 2.0E‐02 I 1 0.1 Propargite 2312‐35‐8 1.2E+03 n 1.2E+04 n 7.3E+02 n 5.4E+01 2.0E‐03 I 1 0.1 Propargyl Alcohol 107‐19‐7 1.2E+02 n 1.2E+03 n 7.3E+01 n 1.5E‐02 2.0E‐02 I 1 0.1 Propazine 139‐40‐2 1.2E+03 n 1.2E+04 n 7.3E+02 n 6.5E‐01 2.0E‐02 I 1 0.1 Propham 122‐42‐9 1.2E+03 n 1.2E+04 n 7.3E+02 n 4.7E‐01 1.3E‐02 I 1 0.1 Propiconazole 60207‐90‐1 7.9E+02 n 8.0E+03 n 4.7E+02 n 1.6E+00 8.0E‐03 I V 1 3.3E+04 Propionaldehyde 123‐38‐6 8.0E+01 n 3.4E+02 n 8.3E+00 n 3.5E+01 n 1.7E+01 n 3.4E‐03 1.0E‐01 X 1.0E+00 X V 1 0.1 2.6E+02 Propyl benzene 103‐65‐1 3.4E+03 ns 2.1E+04 ns 1.0E+03 n 4.4E+03 n 1.3E+03 n 2.5E+00 3.0E+00 C 1 0.1 Propylene 115‐07‐1 4.3E+09 nm 1.8E+10 nm 3.1E+03 n 1.3E+04 n 2.0E+01 P 1 0.1 Propylene Glycol 57‐55‐6 1.2E+06 nm 1.2E+07 nm 7.3E+05 n 1.5E+02 2.7E‐04 A V 1 1.5E+03 Propylene Glycol Dinitrate 6423‐43‐4 5.7E+01 n 2.4E+02 n 2.8E‐01 n 1.2E+00 n 5.7E‐01 n 1.8E‐04 7.0E‐01 H 1 0.1 Propylene Glycol Monoethyl Ether 1569‐02‐4 4.3E+04 n 4.3E+05 nm 2.6E+04 n 5.2E+00 7.0E‐01 H 2.0E+00 I 1 0.1 Propylene Glycol Monomethyl Ether 107‐98‐2 4.3E+04 n 4.3E+05 nm 2.1E+03 n 8.8E+03 n 2.6E+04 n 5.2E+00 2.4E‐01 I 3.7E‐06 I 3.0E‐02 I V 1 7.8E+04 Propylene Oxide 75‐56‐9 2.0E+00 c 9.0E+00 c 6.6E‐01 c* 3.3E+00 c* 2.3E‐01 c 4.9E‐05 2.5E‐01 I 1 0.1 Pursuit 81335‐77‐5 1.5E+04 n 1.5E+05 nm 9.1E+03 n 8.0E+00 2.5E‐02 I 1 0.1 Pydrin 51630‐58‐1 1.5E+03 n 1.5E+04 n 9.1E+02 n 5.8E+02 1.0E‐03 I V 1 5.3E+05 Pyridine 110‐86‐1 7.8E+01 n 1.0E+03 n 3.7E+01 n 1.3E‐02 5.0E‐04 I 1 0.1 Quinalphos 13593‐03‐8 3.1E+01 n 3.1E+02 n 1.8E+01 n 1.6E‐01 3.0E+00 I 1 0.1 Quinoline 91‐22‐5 1.6E‐01 c 5.7E‐01 c 2.2E‐02 c 7.4E‐05 3.0E‐02 A 1 Refractory Ceramic Fibers NA 4.3E+07 nm 1.8E+08 nm 3.1E+01 n 1.3E+02 n 3.0E‐02 I 1 0.1 Resmethrin 10453‐86‐8 1.8E+03 n 1.8E+04 n 1.1E+03 n 6.8E+02 5.0E‐02 H 1 0.1 Ronnel 299‐84‐3 3.1E+03 n 3.1E+04 n 1.8E+03 n 1.7E+01 4.0E‐03 I 1 0.1 Rotenone 83‐79‐4 2.4E+02 n 2.5E+03 n 1.5E+02 n 7.6E+01 2.2E‐01 C 6.3E‐05 C M 1 0.1 Safrole 94‐59‐7 5.2E‐01 c 7.8E+00 c 1.5E‐02 c 1.9E‐01 c 9.8E‐02 c 6.0E‐05 2.5E‐02 I 1 0.1 Savey 78587‐05‐0 1.5E+03 n 1.5E+04 n 9.1E+02 n 4.1E+00 5.0E‐03 I 1 Selenious Acid 7783‐00‐8 3.9E+02 n 5.1E+03 n 1.8E+02 n 5.0E‐03 I 2.0E‐02 C 1 Selenium 7782‐49‐2 3.9E+02 n 5.1E+03 n 2.1E+01 n 8.8E+01 n 1.8E+02 n 5.0E+01 9.5E‐01 2.6E‐01 5.0E‐03 C 2.0E‐02 C 1 Selenium Sulfide 7446‐34‐6 3.9E+02 n 5.1E+03 n 2.1E+01 n 8.8E+01 n 1.8E+02 n 9.0E‐02 I 1 0.1 Sethoxydim 74051‐80‐2 5.5E+03 n 5.5E+04 n 3.3E+03 n 2.9E+01 3.0E‐03 C 1 Silica respirable) 7631‐86‐9 4.3E+06 nm 1.8E+07 nm 3.1E+00 n 1.3E+01 n Page 10 of 12 ---PAGE BREAK--- Regional Screening Level (RSL) Summary Table June 2011 SFO (mg/kg‐day)‐1 k e y IUR (ug/m3)‐1 k e y RfDo (mg/kg‐day) k e y RfCi (mg/m3) k e y v o c muta‐ gen GIABS ABS Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) key Industrial Soil (mg/kg) key Resident Air (ug/m3) key Industrial Air (ug/m3) key Tapwater (ug/L) key MCL (ug/L) Risk‐based SSL (mg/kg) MCL‐based SSL (mg/kg) Key: I = IRIS; P = A = ATSDR; C = Cal EPA; X = Appendix; H = HEAST; J = New Jersey; Y = New York; O = EPA Office of Water; E = Environmental Criteria and Assessment Office; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ; c = cancer; * = where: n SL < 100X c SL; = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit (See User Guide); s = Concentration may exceed Csat (See User Guide); SSL values are based on DAF=1 Toxicity and Chemical‐specific Information Contaminant Screening Levels Protection of Ground Water SSLs 5.0E‐03 I 0.04 Silver 7440‐22‐4 3.9E+02 n 5.1E+03 n 1.8E+02 n 1.6E+00 1.2E‐01 H 5.0E‐03 I 1 0.1 Simazine 122‐34‐9 4.1E+00 c* 1.4E+01 c 5.6E‐01 c 4.0E+00 2.8E‐04 2.0E‐03 1.3E‐02 I 1 0.1 Sodium Acifluorfen 62476‐59‐9 7.9E+02 n 8.0E+03 n 4.7E+02 n 3.8E+00 4.0E‐03 I 1 Sodium Azide 26628‐22‐8 3.1E+02 n 4.1E+03 n 1.5E+02 n 2.7E‐01 H 3.0E‐02 I 1 0.1 Sodium 148‐18‐5 1.8E+00 c 6.4E+00 c 2.5E‐01 c 5.0E‐02 A 1.3E‐02 C 1 Sodium Fluoride 7681‐49‐4 3.9E+03 n 5.1E+04 n 1.4E+01 n 5.7E+01 n 1.8E+03 n 2.0E‐05 I 1 0.1 Sodium Fluoroacetate 62‐74‐8 1.2E+00 n 1.2E+01 n 7.3E‐01 n 1.5E‐04 1.0E‐03 H 1 Sodium Metavanadate 13718‐26‐8 7.8E+01 n 1.0E+03 n 3.7E+01 n 2.4E‐02 H 3.0E‐02 I 1 0.1 Stirofos (Tetrachlorovinphos) 961‐11‐5 2.0E+01 c* 7.2E+01 c 2.8E+00 c 8.3E‐03 6.0E‐01 I 1 Strontium, Stable 7440‐24‐6 4.7E+04 n 6.1E+05 nm 2.2E+04 n 7.7E+02 3.0E‐04 I 1 0.1 57‐24‐9 1.8E+01 n 1.8E+02 n 1.1E+01 n 1.2E‐01 2.0E‐01 I 1.0E+00 I V 1 8.7E+02 Styrene 100‐42‐5 6.3E+03 ns 3.6E+04 ns 1.0E+03 n 4.4E+03 n 1.6E+03 n 1.0E+02 1.8E+00 1.1E‐01 8.0E‐04 P 1 0.1 Sulfonylbis(4‐chlorobenzene), 1,1'‐ 80‐07‐9 4.9E+01 n 4.9E+02 n 2.9E+01 n 1.7E‐01 1.0E‐03 C 1 Sulfuric Acid 7664‐93‐9 1.4E+06 nm 6.0E+06 nm 1.0E+00 n 4.4E+00 n 2.5E‐02 I 1 0.1 88671‐89‐0 1.5E+03 n 1.5E+04 n 9.1E+02 n 1.1E+01 3.0E‐02 H 1 0.1 21564‐17‐0 1.8E+03 n 1.8E+04 n 1.1E+03 n 7.6E+00 7.0E‐02 I 1 0.1 Tebuthiuron 34014‐18‐1 4.3E+03 n 4.3E+04 n 2.6E+03 n 7.3E‐01 2.0E‐02 H 1 0.1 Temephos 3383‐96‐8 1.2E+03 n 1.2E+04 n 7.3E+02 n 1.4E+02 1.3E‐02 I 1 0.1 Terbacil 5902‐51‐2 7.9E+02 n 8.0E+03 n 4.7E+02 n 1.4E‐01 2.5E‐05 H 1 0.1 Terbufos 13071‐79‐9 1.5E+00 n 1.5E+01 n 9.1E‐01 n 2.0E‐03 1.0E‐03 I 1 0.1 Terbutryn 886‐50‐0 6.1E+01 n 6.2E+02 n 3.7E+01 n 5.2E‐02 1.0E‐04 I 1 0.1 Tetrabromodiphenyl ether, 2,2',4,4'‐ (BDE‐47) 5436‐43‐1 6.1E+00 n 6.2E+01 n 3.7E+00 n 9.7E‐02 3.0E‐04 I 1 0.1 Tetrachlorobenzene, 1,2,4,5‐ 95‐94‐3 1.8E+01 n 1.8E+02 n 1.1E+01 n 5.1E‐02 2.6E‐02 I 7.4E‐06 I 3.0E‐02 I V 1 6.8E+02 Tetrachloroethane, 1,1,1,2‐ 630‐20‐6 1.9E+00 c 9.3E+00 c 3.3E‐01 c 1.7E+00 c 5.2E‐01 c 2.0E‐04 2.0E‐01 I 5.8E‐05 C 2.0E‐02 I V 1 1.9E+03 Tetrachloroethane, 1,1,2,2‐ 79‐34‐5 5.6E‐01 c 2.8E+00 c 4.2E‐02 c 2.1E‐01 c 6.7E‐02 c 2.6E‐05 5.4E‐01 C 5.9E‐06 C 1.0E‐02 I 2.7E‐01 A V 1 1.7E+02 Tetrachloroethylene 127‐18‐4 5.5E‐01 c 2.6E+00 c 4.1E‐01 c 2.1E+00 c 1.1E‐01 c 5.0E+00 4.9E‐05 2.3E‐03 3.0E‐02 I 1 0.1 Tetrachlorophenol, 2,3,4,6‐ 58‐90‐2 1.8E+03 n 1.8E+04 n 1.1E+03 n 6.7E+00 2.0E+01 H 1 0.1 Tetrachlorotoluene, p‐ alpha, alpha, alpha‐ 5216‐25‐1 2.4E‐02 c 8.6E‐02 c 3.4E‐03 c 1.1E‐05 5.0E‐04 I 1 0.1 Tetraethyl Dithiopyrophosphate 3689‐24‐5 3.1E+01 n 3.1E+02 n 1.8E+01 n 1.3E‐02 8.0E+01 I V 1 1.1E+03 Tetrafluoroethane, 1,1,1,2‐ 811‐97‐2 1.1E+05 nms 4.6E+05 nms 8.3E+04 n 3.5E+05 n 1.7E+05 n 9.3E+01 4.0E‐03 P 1 0.1 Tetryl 479‐45‐8 2.4E+02 n 2.5E+03 n 1.5E+02 n 1.4E+00 1.0E‐05 X 1 Thallium (Soluble Salts) 7440‐28‐0 7.8E‐01 n 1.0E+01 n 3.7E‐01 n 2.0E+00 2.6E‐02 1.4E‐01 1.0E‐02 I 1 0.1 Thiobencarb 28249‐77‐6 6.1E+02 n 6.2E+03 n 3.7E+02 n 1.3E+00 7.0E‐02 X 1 0.008 Thiodiglycol 111‐48‐8 5.4E+03 n 6.8E+04 n 2.6E+03 n 5.2E‐01 3.0E‐04 H 1 0.1 Thiofanox 39196‐18‐4 1.8E+01 n 1.8E+02 n 1.1E+01 n 3.8E‐03 8.0E‐02 I 1 0.1 Thiophanate, Methyl 23564‐05‐8 4.9E+03 n 4.9E+04 n 2.9E+03 n 2.5E+00 5.0E‐03 I 1 0.1 Thiram 137‐26‐8 3.1E+02 n 3.1E+03 n 1.8E+02 n 2.6E‐01 6.0E‐01 H 1 Tin 7440‐31‐5 4.7E+04 n 6.1E+05 nm 2.2E+04 n 5.5E+03 1.0E‐04 A 1 Titanium Tetrachloride 7550‐45‐0 1.4E+05 nm 6.0E+05 nm 1.0E‐01 n 4.4E‐01 n 8.0E‐02 I 5.0E+00 I V 1 8.2E+02 Toluene 108‐88‐3 5.0E+03 ns 4.5E+04 ns 5.2E+03 n 2.2E+04 n 2.3E+03 n 1.0E+03 1.6E+00 6.9E‐01 1.8E‐01 X 1.0E‐04 X 1 0.1 Toluene‐2,5‐diamine 95‐70‐5 2.7E+00 9.6E+00 3.7E‐01 1.2E‐04 1.9E‐01 H 1 0.1 Toluidine, p‐ 106‐49‐0 2.6E+00 c 9.1E+00 c 3.5E‐01 c 1.5E‐04 1.1E+00 I 3.2E‐04 I 1 0.1 Toxaphene 8001‐35‐2 4.4E‐01 c 1.6E+00 c 7.6E‐03 c 3.8E‐02 c 6.1E‐02 c 3.0E+00 9.4E‐03 4.6E‐01 7.5E‐03 I 1 0.1 Tralomethrin 66841‐25‐6 4.6E+02 n 4.6E+03 n 2.7E+02 n 1.0E+02 3.0E‐04 A 1 0.1 Tri‐n‐butyltin 688‐73‐3 1.8E+01 n 1.8E+02 n 1.1E+01 n 2.4E‐01 1.3E‐02 I 1 0.1 Triallate 2303‐17‐5 7.9E+02 n 8.0E+03 n 4.7E+02 n 1.1E+00 1.0E‐02 I 1 0.1 Triasulfuron 82097‐50‐5 6.1E+02 n 6.2E+03 n 3.7E+02 n 3.8E‐01 5.0E‐03 I 1 0.1 Tribromobenzene, 1,2,4‐ 615‐54‐3 3.1E+02 n 3.1E+03 n 1.8E+02 n 2.6E‐01 9.0E‐03 P 1.0E‐02 P 1 0.1 Tributyl Phosphate 126‐73‐8 5.4E+01 c* 1.9E+02 c* 7.5E+00 c* 3.7E‐02 3.0E‐04 P 1 0.1 Tributyltin Compounds NA 1.8E+01 n 1.8E+02 n 1.1E+01 n 3.0E‐04 I 1 0.1 Tributyltin Oxide 56‐35‐9 1.8E+01 n 1.8E+02 n 1.1E+01 n 5.7E+02 3.0E+01 I 3.0E+01 H V 1 9.1E+02 Trichloro‐1,2,2‐trifluoroethane, 1,1,2‐ 76‐13‐1 4.3E+04 ns 1.8E+05 nms 3.1E+04 n 1.3E+05 n 5.9E+04 n 1.5E+02 1 0.1 Trichloroacetic Acid 76‐03‐9 6.0E+01 1.2E‐02 2.9E‐02 H 1 0.1 Trichloroaniline HCl, 2,4,6‐ 33663‐50‐2 1.7E+01 c 5.9E+01 c 2.3E+00 c 6.4E‐03 7.0E‐03 X 3.0E‐05 X 1 0.1 Trichloroaniline, 2,4,6‐ 634‐93‐5 1.8E+00 n 1.8E+01 n 1.1E+00 n 9.9E‐03 8.0E‐04 X V 1 0.1 1.5E+02 Trichlorobenzene, 1,2,3‐ 87‐61‐6 4.9E+01 n 4.9E+02 ns 2.9E+01 n 8.7E‐02 2.9E‐02 P 1.0E‐02 I 2.0E‐03 P V 1 4.0E+02 Trichlorobenzene, 1,2,4‐ 120‐82‐1 2.2E+01 9.9E+01 2.1E+00 n 8.8E+00 n 2.3E+00 7.0E+01 6.8E‐03 2.0E‐01 2.0E+00 I 5.0E+00 I V 1 6.4E+02 Trichloroethane, 1,1,1‐ 71‐55‐6 8.7E+03 ns 3.8E+04 ns 5.2E+03 n 2.2E+04 n 9.1E+03 n 2.0E+02 3.2E+00 7.0E‐02 5.7E‐02 I 1.6E‐05 I 4.0E‐03 I 2.0E‐04 X V 1 2.2E+03 Trichloroethane, 1,1,2‐ 79‐00‐5 1.1E+00 5.3E+00 1.5E‐01 7.7E‐01 2.4E‐01 5.0E+00 7.8E‐05 1.6E‐03 5.9E‐03 C 2.0E‐06 C 1.0E‐02 Y V 1 6.9E+02 Trichloroethylene 79‐01‐6 2.8E+00 1.4E+01 1.2E+00 6.1E+00 2.0E+00 c* 5.0E+00 7.2E‐04 1.8E‐03 3.0E‐01 I 7.0E‐01 H V 1 1.2E+03 Trichlorofluoromethane 75‐69‐4 7.9E+02 n 3.4E+03 ns 7.3E+02 n 3.1E+03 n 1.3E+03 n 8.3E‐01 1.0E‐01 I 1 0.1 Trichlorophenol, 2,4,5‐ 95‐95‐4 6.1E+03 n 6.2E+04 n 3.7E+03 n 1.4E+01 1.1E‐02 I 3.1E‐06 I 1.0E‐03 P 1 0.1 Trichlorophenol, 2,4,6‐ 88‐06‐2 4.4E+01 1.6E+02 7.8E‐01 c 4.0E+00 c 6.1E+00 2.3E‐02 1.0E‐02 I 1 0.1 Trichlorophenoxyacetic Acid, 2,4,5‐ 93‐76‐5 6.1E+02 n 6.2E+03 n 3.7E+02 n 1.5E‐01 8.0E‐03 I 1 0.1 Trichlorophenoxypropionic acid, ‐2,4,5 93‐72‐1 4.9E+02 n 4.9E+03 n 2.9E+02 n 5.0E+01 1.6E‐01 2.8E‐02 Page 11 of 12 ---PAGE BREAK--- Regional Screening Level (RSL) Summary Table June 2011 SFO (mg/kg‐day)‐1 k e y IUR (ug/m3)‐1 k e y RfDo (mg/kg‐day) k e y RfCi (mg/m3) k e y v o c muta‐ gen GIABS ABS Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) key Industrial Soil (mg/kg) key Resident Air (ug/m3) key Industrial Air (ug/m3) key Tapwater (ug/L) key MCL (ug/L) Risk‐based SSL (mg/kg) MCL‐based SSL (mg/kg) Key: I = IRIS; P = A = ATSDR; C = Cal EPA; X = Appendix; H = HEAST; J = New Jersey; Y = New York; O = EPA Office of Water; E = Environmental Criteria and Assessment Office; S = see user guide Section 5; L = see user guide on lead; M = mutagen; V = volatile; F = See FAQ; c = cancer; * = where: n SL < 100X c SL; = where n SL < 10X c SL; n = noncancer; m = Concentration may exceed ceiling limit (See User Guide); s = Concentration may exceed Csat (See User Guide); SSL values are based on DAF=1 Toxicity and Chemical‐specific Information Contaminant Screening Levels Protection of Ground Water SSLs 5.0E‐03 I V 1 1.3E+03 Trichloropropane, 1,1,2‐ 598‐77‐6 3.9E+02 n 5.1E+03 ns 1.8E+02 n 7.1E‐02 3.0E+01 I 4.0E‐03 I 3.0E‐04 I V M 1 1.4E+03 Trichloropropane, 1,2,3‐ 96‐18‐4 5.0E‐03 c 9.5E‐02 c 3.1E‐01 n 1.3E+00 n 7.2E‐04 c 3.1E‐07 3.0E‐03 X 3.0E‐04 P V 1 4.5E+02 Trichloropropene, 1,2,3‐ 96‐19‐5 7.8E‐01 n 3.3E+00 n 3.1E‐01 n 1.3E+00 n 6.2E‐01 n 3.1E‐04 3.0E‐03 I 1 0.1 Tridiphane 58138‐08‐2 1.8E+02 n 1.8E+03 n 1.1E+02 n 7.8E‐01 7.0E‐03 I V 1 2.8E+04 Triethylamine 121‐44‐8 1.2E+02 n 5.2E+02 n 7.3E+00 n 3.1E+01 n 1.5E+01 n 4.4E‐03 7.7E‐03 I 7.5E‐03 I 1 0.1 Trifluralin 1582‐09‐8 6.3E+01 2.2E+02 c* 8.7E+00 c* 2.9E‐01 2.0E‐02 P 1.0E‐02 P 1 0.1 Trimethyl Phosphate 512‐56‐1 2.4E+01 c* 8.6E+01 c* 3.4E+00 c 7.4E‐04 5.0E‐03 P V 1,2,3‐ 526‐73‐8 7.1E+06 nm 3.0E+07 nm 5.2E+00 n 2.2E+01 n 1.0E+01 n 7.0E‐03 P V 1 2.2E+02 1,2,4‐ 95‐63‐6 6.2E+01 n 2.6E+02 ns 7.3E+00 n 3.1E+01 n 1.5E+01 n 2.1E‐02 1.0E‐02 X V 1 1.8E+02 1,3,5‐ 108‐67‐8 7.8E+02 ns 1.0E+04 ns 3.7E+02 n 5.2E‐01 3.0E‐02 I 1 0.019 Trinitrobenzene, 1,3,5‐ 99‐35‐4 2.2E+03 n 2.7E+04 n 1.1E+03 n 3.9E+00 3.0E‐02 I 5.0E‐04 I 1 0.032 Trinitrotoluene, 2,4,6‐ 118‐96‐7 1.9E+01 7.9E+01 2.2E+00 1.3E‐02 2.0E‐02 P 1 0.1 Oxide 791‐28‐6 1.2E+03 n 1.2E+04 n 7.3E+02 n 3.0E+00 2.0E‐02 P 7.0E‐03 P 1 0.1 Tris(2‐chloroethyl)phosphate 115‐96‐8 2.4E+01 c* 8.6E+01 c* 3.4E+00 c* 3.3E‐03 3.2E‐03 P 1.0E‐01 P 1 0.1 78‐42‐2 1.5E+02 c* 5.4E+02 c 2.1E+01 c 1.0E+02 3.0E‐03 I 3.0E‐04 A 1 Uranium (Soluble Salts) NA 2.3E+02 n 3.1E+03 n 3.1E‐01 n 1.3E+00 n 1.1E+02 n 3.0E+01 4.9E+01 1.4E+01 1.0E+00 C 2.9E‐04 C M 1 0.1 Urethane 51‐79‐6 1.2E‐01 c 1.7E+00 c 3.3E‐03 c 4.2E‐02 c 2.2E‐02 c 4.8E‐06 8.3E‐03 P 9.0E‐03 I 7.0E‐06 P 0.026 Vanadium Pentoxide 1314‐62‐1 4.0E+02 2.0E+03 2.9E‐04 c* 1.5E‐03 c* 3.3E+02 n 2.0E‐02 H 0.026 Vanadium Sulfate 36907‐42‐3 1.6E+03 n 2.0E+04 n 7.3E+02 n 5.0E‐03 S 1 Vanadium and Compounds NA 3.9E+02 n 5.2E+03 n 1.8E+02 n 1.8E+02 1.0E‐03 I 1 0.1 Vernolate 1929‐77‐7 6.1E+01 n 6.2E+02 n 3.7E+01 n 2.9E‐02 2.5E‐02 I 1 0.1 Vinclozolin 50471‐44‐8 1.5E+03 n 1.5E+04 n 9.1E+02 n 7.0E‐01 1.0E+00 H 2.0E‐01 I V 1 2.8E+03 Vinyl Acetate 108‐05‐4 9.7E+02 n 4.1E+03 ns 2.1E+02 n 8.8E+02 n 4.1E+02 n 8.8E‐02 3.2E‐05 H 3.0E‐03 I V 1 0.0E+00 Vinyl Bromide 593‐60‐2 1.1E‐01 c*s 5.6E‐01 c*s 7.6E‐02 c* 3.8E‐01 c* 1.5E‐01 c* 4.4E‐05 7.2E‐01 I 4.4E‐06 I 3.0E‐03 I 1.0E‐01 I V M 1 3.9E+03 Vinyl Chloride 75‐01‐4 6.0E‐02 c 1.7E+00 c 1.6E‐01 c 2.8E+00 c 1.6E‐02 c 2.0E+00 5.6E‐06 6.9E‐04 3.0E‐04 I 1 0.1 Warfarin 81‐81‐2 1.8E+01 n 1.8E+02 n 1.1E+01 n 1.2E‐02 2.0E‐01 S 1.0E‐01 S V 1 3.9E+02 Xylene, P‐ 106‐42‐3 6.0E+02 ns 2.6E+03 ns 1.0E+02 n 4.4E+02 n 2.0E+02 n 2.0E‐01 2.0E‐01 S 1.0E‐01 S V 1 3.9E+02 Xylene, m‐ 108‐38‐3 5.9E+02 ns 2.5E+03 ns 1.0E+02 n 4.4E+02 n 2.0E+02 n 2.0E‐01 2.0E‐01 S 1.0E‐01 S V 1 4.3E+02 Xylene, o‐ 95‐47‐6 6.9E+02 ns 3.0E+03 ns 1.0E+02 n 4.4E+02 n 2.0E+02 n 2.0E‐01 2.0E‐01 I 1.0E‐01 I V 1 2.6E+02 Xylenes 1330‐20‐7 6.3E+02 ns 2.7E+03 ns 1.0E+02 n 4.4E+02 n 2.0E+02 n 1.0E+04 2.0E‐01 9.8E+00 3.0E‐04 I 1 Zinc Phosphide 1314‐84‐7 2.3E+01 n 3.1E+02 n 1.1E+01 n 3.0E‐01 I 1 Zinc and Compounds 7440‐66‐6 2.3E+04 n 3.1E+05 nm 1.1E+04 n 6.8E+02 5.0E‐02 I 1 0.1 Zineb 12122‐67‐7 3.1E+03 n 3.1E+04 n 1.8E+03 n 5.3E+00 Page 12 of 12