Hamilton KA, Ahmed W, Toze S, Haas CN. Human health risks for Legionella and Mycobacterium avium complex (MAC) from potable and non-potable uses of roof-harvested rainwater. Water research. 2017 Apr 5;119:288-303. doi: 10.1016/j.watres.2017.04.004.
A quantitative microbial risk assessment (QMRA) of opportunistic pathogens Legionella pneumophila (LP) and Mycobacterium avium complex (MAC) was undertaken for various uses of roof-harvested rainwater (RHRW) reported in Queensland, Australia to identify appropriate usages and guide risk management practices. Risks from inhalation of aerosols due to showering, swimming in pools topped up with RHRW, use of a garden hose, car washing, and toilet flushing with RHRW were considered for LP while both ingestion (drinking, produce consumption, and accidental ingestion from various activities) and inhalation risks were considered for MAC. The drinking water route of exposure presented the greatest risks due to cervical lymphadenitis and disseminated infection health endpoints for children and immune-compromised populations, respectively. It is therefore not recommended that these populations consume untreated rainwater. LP risks were up to 6 orders of magnitude higher than MAC risks for the inhalation route of exposure for all scenarios. Both inhalation and ingestion QMRA simulations support that while drinking, showering, and garden hosing with RHRW may present the highest risks, car washing and clothes washing could constitute appropriate uses of RHRW for all populations, and toilet flushing and consumption of lettuce irrigation with RHRW would be appropriate for non- immune-compromised populations.
“More than 100 coal power plants are in various stages of planning or development in 11 African countries outside of South Africa — more than eight times the region’s existing coal capacity. Africa’s embrace of coal is in part the result of its acute shortage of power.” click here
Dr. James P. Wallace III, Dr. John R. Christy, Dr. Joseph S. D’Aleo. The Validity of EPA’s CO2 Endangerment Finding. August 2016. Second Edition. April 2017.
The objective of this research was to determine whether or not a straightforward application of the “proper mathematical methods” would support EPA’s basic claim that CO2 is a pollutant. These analysis results would appear to leave very, very little doubt but that EPA’s claim of a Tropical Hot Spot (THS), caused by rising atmospheric CO2 levels, simply does not exist in the real world. Also critically important, this analysis failed to find that the steadily rising Atmospheric CO2 Concentrations have had a statistically significant impact on any of the 14 temperature data sets that were analyzed. The temperature data measurements that were analyzed were taken by many different entities using balloons, satellites, buoys and various land based techniques. Needless to say, if regardless of data source, the structural analysis results are the same, the analysis findings should be considered highly credible. Thus, the analysis results invalidate each of the Three Lines of Evidence in its CO2 Endangerment Finding. Once EPA’s THS assumption is invalidated, it is obvious why the climate models EPA claims can be relied upon for policy analysis purposes, are also invalid. And, these results clearly demonstrate—14 separate and distinct times in fact–that once just the Natural Factor impacts on temperature data are accounted for, there is no “record setting” warming to be concerned about. In fact, there is no Natural Factor Adjusted Warming at all. Moreover, over the time period analyzed, these natural factors have involved historically quite normal solar, volcanic and ENSO activity. At this point, there is no statistically valid proof that past increases in atmospheric CO2 concentrations have caused the officially reported rising, even claimed record setting temperatures.
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“The Federal Energy Regulatory Commission (FECR) forensic audit of the Oroville Dam Spillway crisis project found that failures were due to inadequate California Department of Water Resources (DWR) maintenance, repair of cracks, thin concrete slabs, poor drainage, and use of weathered rock.” click here
In accordance with Executive Order 13777, “Enforcing the Regulatory Reform Agenda,” EPA is seeking input on regulations that may be appropriate for repeal, replacement, or modification. Click here to submit.