Site Map
Complete index of all published content on SiteRef.
Cleanup & Regulatory Programs
National
- CERCLA/Superfund Process - How Federal Cleanup Sites Work
- CWA Section 404/401 - Wetland and Waterway Permitting
- NEPA Overview - National Environmental Policy Act
- NPDES Permitting Overview - Discharge Permits Under the Clean Water Act
- RCRA Corrective Action - How Federal Facility Cleanups Work
- TSCA Basics - Toxic Substances Control Act Overview
Indiana
Ohio
- Ohio Asbestos Regulations Overview
- Ohio Brownfield Programs - Funding, Assessment, and Redevelopment
- Ohio BUSTR - Underground Storage Tank Regulations Overview
- Ohio DERR Remedial Response Program - State-Directed Cleanups
- Ohio Lead Program Overview - Paint, Dust, Soil, and Water
- Ohio RCRA and Hazardous Waste Program Overview
- Ohio Voluntary Action Program (VAP) - Complete Overview
Standards Database
National
- Asbestos Regulatory Standards and Thresholds - Quick Reference
- EPA National Recommended Water Quality Criteria - Aquatic Life
- EPA National Recommended Water Quality Criteria - Human Health
- Lead Standards Quick Reference - Paint, Dust, Soil, Air, and Water
- OSHA Lead in Construction Standard - PEL, Action Level, and Requirements
- State-by-State PFAS Drinking Water Standards Comparison
Indiana
- IDEM R2 Excavation Screening Levels - Indiana Published Levels for Soil
- IDEM R2 Soil Published Levels - Indiana Metals
- IDEM R2 Soil Published Levels - Indiana Pesticides and PCBs
- IDEM R2 Soil Published Levels - Indiana SVOCs and PAHs
- IDEM R2 Soil Published Levels - Indiana VOCs (Residential and C/I)
- Indiana Groundwater Published Levels - Metals
- Indiana Groundwater Published Levels - Pesticides and PCBs
- Indiana Groundwater Published Levels - SVOCs and PAHs
- Indiana Groundwater Published Levels - Volatile Organic Compounds (VOCs)
- Indiana Indoor Air Published Levels - SVOCs and PAHs
- Indiana Indoor Air Published Levels - Volatile Organic Compounds (VOCs)
- Indiana PFAS Screening Levels
- Indiana Recreational Soil Screening Levels
- Indiana Soil Gas Screening Levels
Ohio
- Ohio BUSTR Closure Action Levels
- Ohio BUSTR Corrective Action Standards
- Ohio Groundwater Standards - Volatile Organic Compounds (VOCs)
- Ohio PFAS Standards - Drinking Water & Groundwater Action Levels
- Ohio Sediment Reference Values (SRVs)
- Ohio Surface Water Quality Criteria - Aquatic Life
- Ohio Surface Water Quality Criteria - Human Health (Fish Consumption)
- Ohio Surface Water Quality Criteria - Human Health (Water Supply)
- Ohio VAP Groundwater Standards - Metals
- Ohio VAP Groundwater Standards - Pesticides and PCBs
- Ohio VAP Groundwater Standards - SVOCs and PAHs
- Ohio VAP Indoor Air Standards - VOCs (Residential and Commercial)
- Ohio VAP Leach-Based Soil Values (LBSVs)
- Ohio VAP Soil Standards - Metals
- Ohio VAP Soil Standards - Pesticides and PCBs
- Ohio VAP Soil Standards - SVOCs and PAHs
- Ohio VAP Soil Standards - Volatile Organic Compounds (VOCs)
- Ohio Vapor Intrusion Evaluation Guide
- Ohio Water Quality Standards (OAC 3745-1)
Field Guides
Data Analysis
Field Methods
- Asbestos Air Monitoring During Abatement and Demolition
- Asbestos Analytical Methods - PLM, Point Counting, TEM, and PCM
- Bailer Groundwater Sampling - When to Use It and How to Do It Right
- BUSTR UST Closure Sampling - Assessment Requirements and Procedures
- Groundwater Elevation Measurement - Water Levels, Surveying, and Flow Direction
- Lead Paint Inspection and Risk Assessment Guide
- Low-Flow Groundwater Sampling - A Practical Field Guide
- Monitoring Well Development - Methods, Criteria, and Documentation
- Monitoring Well Installation - Design, Construction, and Completion
- Ohio Monitoring Well Sealing and Abandonment Requirements
- PFAS Sampling Best Practices - A Practical Field Guide
- Soil Sampling Techniques for Environmental Site Assessments
Regulatory Compliance
- AHERA Sampling and the 1% Threshold - Asbestos Inspection Protocols
- Asbestos NESHAP Explained - National Emission Standards for Hazardous Air Pollutants
- BUSTR Interim Response Actions - Source Removal and Short-Term Cleanup
- BUSTR Remedial Action Plans, Tier 3, and No Further Action
- BUSTR Tier 1 Source Investigation and Delineation
- BUSTR Tier 2 Evaluation - Site-Specific Target Levels and Pathway Analysis
- Cleanup Levels vs. Screening Levels vs. MCLs - What's the Difference?
- EPA Regional Screening Levels (RSLs) Explained
- EPA RRP Rule Explained - Renovation, Repair, and Painting
- EPA RSL November 2024 Update - What Changed and Key Values
- Hazardous Waste Determination Guide - Listed vs. Characteristic Waste
- IDEM R2 Walkthrough - Indiana Risk-based Closure Guide (WASTE-0046-R2)
- Indiana Contained-In Determination - When Contaminated Media Becomes Hazardous Waste
- Indiana Excess Liability Trust Fund (ELTF) - Petroleum Cleanup Reimbursement Guide
- Indiana Institutional Controls - Environmental Restrictive Covenants and Use Limitations
- Indiana Spill Reporting Quick Reference - Who to Call and When
- Indiana UST Closure Requirements - Assessment, Sampling, and Reporting
- Indiana VRP Process Walkthrough - Application, Investigation, and Closure
- Ohio Asbestos Certification and Licensing Guide
- Ohio Asbestos Disposal Requirements
- Ohio BUSTR Petroleum Contaminated Soil - Reuse, Treatment, and Disposal
- Ohio Lead Licensing and Certification Guide
- Ohio Spill Reporting Quick Reference - Who to Call and When
- Ohio Urban Setting Designation - Eliminating the Drinking Water Pathway
- Ohio VAP Certified Professional - Requirements, Training, and Certification
- RCRA Hazardous Waste Generator Requirements - Ohio
- SPCC Plan Requirements - Who Needs One and What It Must Include
- SWPPP Requirements - Construction and Industrial Stormwater Permits in Ohio
Blog
- OSHA HAZWOPER Standard Information Collection Extended - Public Comment Period Open May 2026
- EPA Withdraws RCRA Corrective Action Hazardous Waste Definition Rule May 2026
- Environmental Regulatory Roundup - April 2026 May 2026
- EPA Proposes Virginia CCR Permit Program Approval - First State Program Under RCRA May 2026
- EPA RSL November 2024 Update - What Changed and Key Values May 2026
- EPA Oil and Gas NESHAP Technology Review - No Changes to Current Standards, New Methanol Limits Proposed Apr 2026
- EPA Delays PFAS Reporting Rule Submission Period to January 2027 - What Consultants Need to Know Apr 2026
- Indiana Storage Tank Program Update - IDEM Reorganizes Tank Oversight and ELTF Operations Apr 2026
- Contaminated Soil Disposal Options in Ohio - Landfill Criteria, Treatment, and Cost Considerations Apr 2026
- EPA Proposes New CCR Rule Flexibility - Site-Specific Permitting and Dewatering Exemptions Apr 2026
- EPA Proposes New Contractor Manifest Signing Authority - Streamlining Hazardous Waste Removal at Federal Sites Apr 2026
- Environmental Regulatory Roundup - March 2026 Apr 2026
- Field Decontamination Procedures for Sampling Equipment - Preventing Cross-Contamination Apr 2026
- How to Read Boring Logs and Well Construction Diagrams - A Field Guide for Environmental Consultants Apr 2026
- Spring Field Season Prep - Equipment Checks, Calibration, and Supply Planning Apr 2026
- Writing Environmental Reports That Non-Technical Clients Actually Understand Apr 2026
- EPA Approves Ohio VOC Emission Limit for Life Raft Manufacturing - 5.9 lbs VOC per Gallon Standard Mar 2026
- How to Read TCLP Lab Results - Understanding the Numbers and Regulatory Comparisons Mar 2026
- Essential Tools and References for New Environmental Consultants - What You Need on Day One Mar 2026
- XRF Lead Paint Inspection Tips - Handling Substrate Interference and Inconclusive Readings Mar 2026
- Chain of Custody Best Practices - Common Errors That Invalidate Environmental Samples Mar 2026
- Laboratory Analytical Errors in Environmental Sampling - How to Spot Problems and Fix Them Mar 2026
- Phase I ESA Red Flags - Critical RECs That Demand Phase II Investigation Mar 2026
- Pre-Demolition Asbestos Survey Mistakes - Field Errors That Trigger Violations Mar 2026
- EPA RSL and VISL Calculators Went Offline in February 2026 - What to Do When EPA Tools Go Down Mar 2026
- Filing an Ohio Asbestos Notification - A Practical Walkthrough Mar 2026
- Ohio's RCRA Generator Improvements Rule - What Changed and What It Means Mar 2026
- New EPA Dust-Lead Action Levels Now in Effect - What Changed in January 2026 Mar 2026
- EPA Lead Soil Screening Levels Cut in Half - What Ohio Consultants Need to Know Mar 2026
- Ohio Brownfield Remediation Program - FY2026 Grant Round Now Open Mar 2026
- PFAS Drinking Water Standards - Where Things Stand in 2026 Mar 2026
Resources
Environmental Databases
- ASTM Compass - Environmental Standards Lookup
- EPA Certified Renovator and Firm Search
- EPA e-Manifest System
- EPA ECHO (Enforcement and Compliance History Online)
- EPA EJScreen - Environmental Justice Screening Tool
- EPA Envirofacts
- EPA Environmental Data Maps for Ohio
- EPA Regional Screening Levels (RSLs) - Generic Tables
- EPA SEMS - Superfund Site Search
- EPA SW-846 Test Methods for Evaluating Solid Waste
- IDEM Regulatory Services Portal
- IDEM Storage Tanks - Data and Reports
- IDEM UST Facility Search
- IDEM Virtual File Cabinet - Environmental Document Search
- Indiana Brownfields Program - IFA
- NOAA CAFE Database (Chemical Aquatic Fate and Effects)
- Ohio BUSTR UST Facility Search
- Ohio EPA Drinking Water Viewer
- Ohio EPA Open Data Portal
- RCRAInfo Web - Hazardous Waste Facility Lookup
Geology
Historical Sources
Mapping
- EPA Sole Source Aquifer Map
- FEMA Flood Map Service Center
- IDEM Interactive Facility and Site Map
- IndianaMap - State GIS Atlas
- ODNR Mines of Ohio Interactive Map
- ODNR Oil & Gas Well Locator
- Ohio EPA Drinking Water Source Protection Areas
- Ohio EPA Fish Advisory Interactive Map
- Ohio EPA Urban Setting Designation (USD) Areas Map
- Ohio Rail Lines and Development Projects Map
- OpenRailwayMap
Property Records
Regulatory Agencies
- EPA Asbestos Laws and Regulations
- EPA Lead Information and Resources
- EPA RCRA Online
- IDEM Agency Forms
- IDEM Effective Nonrule Policy Documents
- IDEM Emergency Response - Spill Reporting Contacts
- IDEM Office of Land Quality - Laws and Rules
- IDEM Technical Guidance for Cleanups
- IDEM VRP Resources and Forms
- NIOSH Pocket Guide to Chemical Hazards
- Ohio Department of Health - Lead Licensure and Accreditation Program
- Ohio EPA eDocs - Document Management System
- Ohio EPA VAP Certified Professional (CP) Directory
- OSHA Asbestos Safety and Health Topics