- Fingerprinting Water
William E. Motzer PhD, PG, Senior Geochemist, Todd Engineers
- Chromium Handbook, by the Independent Environmental Technical Evaluation Group (PDF)
Reviewed by Jay Lehr, The Heartland Institute
- Current State of the Practice of Perchlorate Forensics (PDF)
William E. Motzer PhD, PG, Senior Geochemist, Todd Engineers - Developing, Managing, and Sustaining California's Groundwater Resources (PDF)
- Advisory - Active Soil Gas Investigations - DTSC & CA RWQCB LA Region (PDF)
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