Field Guides
Practical how-to guidance for sampling, site assessments, and regulatory compliance.
Regulatory Compliance
AHERA Sampling and the 1% Threshold - Asbestos Inspection Protocols
AHERA sampling rules, the 1% ACM threshold, OSHA's any-amount rule, commonly misclassified materials, and inspection reporting.
Published Mar 25, 2026Asbestos NESHAP Explained - National Emission Standards for Hazardous Air Pollutants
What the asbestos NESHAP requires: surveys, notifications, threshold quantities, work practices, and demolition vs. renovation rules.
Published Mar 25, 2026EPA RRP Rule Explained - Renovation, Repair, and Painting
What the EPA RRP Rule requires: certified renovators, firm certification, lead-safe work practices, and pre-1978 housing triggers.
Published Mar 25, 2026Hazardous Waste Determination Guide - Listed vs. Characteristic Waste
How to determine if waste is hazardous: listed wastes, characteristic wastes, TCLP, the four characteristics, and generator knowledge.
Published Mar 25, 2026EPA Regional Screening Levels (RSLs) Explained
What RSLs are, how they're calculated, update schedule, toxicity hierarchy, and which table to use. A reference guide for consultants.
Published Mar 25, 2026Ohio Lead Licensing and Certification Guide
ODH lead license types, training requirements, fees, and application process. Inspector, risk assessor, abatement, and clearance.
Published Mar 25, 2026Ohio Asbestos Disposal Requirements
Asbestos waste handling, packaging, labeling, transport, and disposal requirements in Ohio under NESHAP and OAC 3745-20.
Published Mar 25, 2026RCRA Hazardous Waste Generator Requirements - Ohio
Ohio hazardous waste generator categories, accumulation limits, manifesting, labeling, training, and biennial reporting requirements.
Published Mar 25, 2026Ohio Asbestos Certification and Licensing Guide
Ohio EPA asbestos certification types, training requirements, fees, and application process. AHES, AHAS, AHAW, and contractor licensing.
Published Mar 25, 2026Cleanup Levels vs. Screening Levels vs. MCLs - What's the Difference?
What MCLs, RSLs, PRGs, and state cleanup standards mean, where they come from, and when to use each one. A plain-language guide for environmental professionals.
Published Mar 23, 2026Field Methods
Asbestos Air Monitoring During Abatement and Demolition
OSHA PEL, excursion limit, PCM air monitoring types, work classifications, hot demolition rules, and clearance sampling requirements.
Published Mar 25, 2026Asbestos Analytical Methods - PLM, Point Counting, TEM, and PCM
When to use PLM, 400-point count, TEM, gravimetric reduction, and PCM for asbestos analysis. Detection limits and practical guidance.
Published Mar 25, 2026Lead Paint Inspection and Risk Assessment Guide
XRF vs. paint chip sampling, HUD protocols, dust wipe standards, when inspections vs. risk assessments are required, and clearance testing.
Published Mar 25, 2026PFAS Sampling Best Practices - A Practical Field Guide
Step-by-step field procedures for collecting valid PFAS water and soil samples. Covers equipment, clothing restrictions, lab methods, and common mistakes.
Published Mar 22, 2026Low-Flow Groundwater Sampling - A Practical Field Guide
Step-by-step low-flow groundwater sampling guide for VOCs, metals, SVOCs, and PAHs. Equipment, calibration, purging, and common mistakes.
Updated Mar 22, 2026