Department of Health Seal

TGM for the Implementation of the Hawai'i State Contingency Plan
Section 13
CONTENTS

SECTION 13 CONTENTS

Acronyms and Abbreviations
13.0 ENVIRONMENTAL HAZARD EVALUATION
13.1 TARGET ENVIRONMENTAL HAZARDS
13.2 DEVELOPMENT OF VAPOR INTRUSION SCREENING TOOLS
  13.2.1 DERIVATION OF INDOOR AIR:SUBSLAB SOIL AFS USED IN HDOH GUIDANCE
  13.2.2 VAPOR ATTENUATION IN TROPICAL VERSUS COLD CLIMATES
  13.2.3 USE OF EMPIRICAL DATABASES TO DEVELOP ATTENUATION FACTORS FOR THE MAINLAND US
  13.2.4 CONSIDERATION OF BUILDING VENTILATION DESIGNS AND DATA
  13.2.5 USE OF REASONABLE MAXIMUM VERSUS WORST-CASE AFS FOR GENERAL SCREENING
13.3 TIER 1 ENVIRONMENTAL ACTION LEVELS
  13.3.1 DEFAULT CONCEPTUAL SITE MODELS
  13.3.2 COMPILATION OF ENVIRONMENTAL ACTION LEVELS
  13.3.3 USE OF THE EAL SURFER
  13.3.4 USE OF EALS IN SITE INVESTIGATIONS
  13.3.5 USE OF EALS IN ENVIRONMENTAL HAZARD EVALUATIONS
  13.3.6 USE OF EALS IN RESPONSE ACTIONS
  13.3.7 CHEMICALS WITH MRL THAT EXCEED EALS
13.4 CHEMICALS NOT LISTED IN LOOKUP TABLES
13.5 STEPS TO ENVIRONMENTAL HAZARD EVALUATION
  13.5.1 IDENTIFY KEY COPCS
  13.5.2 DETERMINE REPRESENTATIVE CONTAMINANT CONCENTRATIONS
  13.5.3 IDENTIFY POTENTIAL ENVIRONMENTAL HAZARDS
  13.5.4 ADVANCED EVALUATION OF ENVIRONMENTAL HAZARDS
  13.5.5 COMPLETE THE SITE INVESTIGATION
  13.5.6 PREPARE ENVIRONMENTAL HAZARD MAPS
  13.5.7 RECOMMENDED FOLLOW-UP ACTIONS
13.6 PREPARATION OF ENVIRONMENTAL HAZARD EVALUATION REPORTS
13.7 HUMAN HEALTH RISK ASSESSMENTS
  13.7.1 COMPONENTS OF HUMAN HEALTH RISK ASSESSMENT
    13.7.1.1 DATA USABILITY EVALUATION/SELECTION OF COPCS
    13.7.1.2 EXPOSURE ASSESSMENT
    13.7.1.3 TOXICITY ASSESSMENT
    13.7.1.4 RISK CHARACTERIZATION
  13.7.2 REPRESENTATIVE CONTAMINANT CONCENTRATIONS
    13.7.2.1 MULTI-INCREMENT SAMPLING STRATEGY
    13.7.2.2 DISCRETE SAMPLING STRATEGY
  13.7.3 LEAD RISK ASSESSMENTS
  13.7.4 TARGET RISKS FOR PARKLANDS
  13.7.5 REFERENCES FOR HHRAS
13.8 ECOLOGICAL RISK ASSESSEMENTS
 
References
 
Figures
  13-1. Expanded Overview of the Environmental Hazard Evaluation Process
  13-2. Summary of Environmental Hazards Considered in Action Levels
  13-3. Summary of Steps for Use of Tier 1 EAL Lookup Tables
  13-4. Summary of Action Levels Used to Select Tier 1 Soil and Groundwater EALs for Benzene
  13-5a. Printout of EAL Surfer Input Page.
  13-5b. Printout of EAL Surfer Detailed Environmental Hazard Identification Page, Using Benzene at Noted Concentration in Soil and Groundwater as an Example
  13-5c. Printout of EAL Surfer EHE Summary Report, Using Benzene at Noted Concentration in Soil and Groundwater as an Example
  13-6. Environmental Hazard Map for Hypothetical Site with Soil Contamination
  13-7. Environmental Hazard Map for Hypothetical Site with Groundwater Contamination
 
Tables
  13-1 Target Environmental Hazards by Media
  13-2 Chemicals with laboratory reporting limits that could be higher than HDOH Environmental Action Levels. Table 13-3
  13-4 Commonly Used Approaches for Evaluating Environmental Hazards in Soil
  13-5 Evaluation Components for Characterizing Potential Health Risks to Current and/or Potential Future Receptors
  13-6 Evaluation Components for Ecological Risk Assessments