Environmental Geochemistry Issues Semi-Monthly

Registered in advance and attended this U. S. EPA Office of Pollution Prevention and Toxics meeting from 10:00 am to 12:46 pm PDT via remote access today (May 24, 2017)... Assignment and Application of the "Unique Identifier" Under TSCA Section 14; Notice of Public Meeting and Opportunity to Comment ( U. S. Federal Register ; May 8, 2016) https://www.federalregister.gov/documents/2017/05/08/2017-09182/assignment-and-application-of-the-unique-identifier-under-tsca-section-14-notice-of-public-meeting Confidential Business Information under TSCA:  Frequent Questions of TSCA CBI ( U. S. EPA ) https://www.epa.gov/tsca-cbi/frequent-questions-about-tsca-cbi About the TSCA Chemical Substance Inventory ( U. S. EPA ) https://www.epa.gov/tsca-inventory/about-tsca-chemical-substance-inventory News Articles : Off the Books II:  More Secret Chemicals [Research:  Environmental Working Group (EWG)] http://www.ewg.org/research/off-the-books-ii-more-secret-chemicals/in...

Selected Research Articles Occurrence of Neonicotinoid Pesticides in Finished Drinking Water and Fate during Drinking Water Treatment (KLARICH et al. , 2017) http://pubs.acs.org/doi/pdf/10.1021/acs.estlett.7b00081 Mind the Gap:  Persistent and Mobile Organic Compounds - Water Contaminants That Slip Through (REEMTSMA et al. , 2016) http://pubs.acs.org/doi/pdf/10.1021/acs.est.6b03338 Development and Validation of Chronopotentiometric Method for Imidacloprid Determination in Pesticide Formulation and River Water Samples (ĐUROVIĆ et al. , 2016) http://downloads.hindawi.com/journals/ijac/2016/5138491.pdf Selecting pesticides for inclusion in drinking water quality guidelines on the basis of detection probability and ranking (NARITA et al ., 2014) http://ac.els-cdn.com/S016041201300250X/1-s2.0-S016041201300250X-main.pdf?_tid=ed8b06f4-3fd6-11e7-8786-00000aab0f6b&acdnat=1495557979_0719690751aa94a179bfa8286152f752 Websites: Pollinator Protection:  Schedule fo...

Earth was barren, flat and almost entirely under water 4.4 billion years ago : Scientists say the early Earth was likely to be barren, flat and almost entirely under water with a few small islands, following their analysis of tiny mineral grains as old as 4.4 billion years. Article:  Zircons Recast Earth's Earliest Era ( American Museum of Natural History ) http://www.amnh.org/explore/science-bulletins/earth/documentaries/zircons-time-capsules-from-the-early-earth/article-zircons-recast-earth-s-earliest-era/ Selected Research Articles: The Hadean Crust:  Evidence from >4 Ga Zircons (HARRISON, 2009) http://archenv.geo.uu.nl/pdf/Harrison%202009%20Ann%20Rev%20Hadean%20Zircons.pdf Heterogeneous Hadean Hafnium:  Evidence of Continental Crust at 4.4 to 4.5 Ga (HARRISON et al. , 2005) http://sims.ess.ucla.edu/PDF/Harrison_et_al_2005_Science.pdf Oxygen-Isotope evidence from ancient zircons for liquid water at Earth's surface 4,300 Myr ago (MOJZSIS et al. , 20...

Threats on Tap:  Widespread Violations Highlight Need for Investment in Water Infrastructure and Protection [FEDINICK et al. , Natural Resources Defense Council (NRDC) ; May 2, 2017] https://www.nrdc.org/resources/threats-tap-widespread-violations-water-infrastructure NRDC Reports: Threats on Tap:  Widespread Violations Highlight Need for Investment in Water Infrastructure and Protection (FEDINICK et al. , 2017) https://www.nrdc.org/sites/default/files/threats-on-tap-water-infrastructure-protections-report.pdf What's In Your Water?:  Flint and Beyond (OLSEN and FEDINICK, 2016) https://www.nrdc.org/sites/default/files/whats-in-your-water-flint-beyond-report.pdf U. S. Environmental Protection Agency (EPA) Website : Safe Drinking Water Act https://www.epa.gov/sdwa Summary of the Clean Water Act https://www.epa.gov/laws-regulations/summary-clean-water-act