One of the main concerns relative to the Gulf oil spill is the depletion of oxygen. Mary Anderson of McIlvaine provided a clear description of the mechanisms causing the depletion in the recorded webinar you can view on the site. Gas from shale could supply all the US needs for the next 20 to 40 years. The US reserves are about 25% of the world total with China having the next largest quantity. The problem is: what will the price of this gas be? The answer to this question is based on the cost of water and wastewater treatment. McIlvaine has conducted a series of webinars on the cleanup needs which are available to the registrants. In the next few weeks the US EPA will issue a rule requiring cement plants to meet new air toxic limits (mercury, HCl and organic toxics). A series of McIlvaine webinars provides insights on the difficulties and solutions to this challenge.