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EPA says methane emissions from natural gas production have dropped 36% from 2007-2011

Green Car Congress

In its recently released Inventory of US Greenhouse Gas Emissions and Sinks: 1990 – 2011 ( earlier post ), the US Environmental Protection Agency (EPA) reported that methane (CH 4 ) emissions from the field production of natural gas have declined by 36% from 2007 to 2011 (from 83.1 Tg or million metric tons CO 2 equivalent.)

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HEI ACES study of lifetime animal exposure to New Technology Diesel Engine exhaust finds no lung cancer

Green Car Congress

The first study to conduct a comprehensive evaluation of lifetime exposure to new technology diesel exhaust (NTDE)—i.e., exhaust from heavy-duty diesel engines meeting EPA 2007 and later emissions requirements—has found no evidence of carcinogenic lung tumors. Earlier post.)

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EPA making $20M available for clean diesel projects

Green Car Congress

The US Environmental Protection Agency (EPA) has issued a Request for Proposals ( EPA-OAR-OTAQ-12-05 ) with up to $20 million in FY 2012 grant funding to establish clean diesel projects aimed at reducing pollution from the existing fleet of diesel engines. EPA will fund up to 100% of the cost of an eligible, verified idle reduction.

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EPA report shows progress in reducing urban air toxics across US; 50% reduction from mobile sources since 1990

Green Car Congress

The US Environmental Protection Agency (EPA) released the Second Integrated Urban Air Toxics Report to Congress—the final of two reports required under the Clean Air Act (CAA) to inform Congress of progress in reducing public health risks from urban air toxics (also referred to as hazardous air pollutants or HAPs).

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Study finds high exhaust temperatures within NTE operation for heavy-duty diesels with aftertreatment systems contribute to high nanoparticle concentrations

Green Car Congress

The transient results illustrate the gradual formation of the nucleation mode particles with continuous increase in exhaust temperatures. Diesel particulate filters (DPF) and urea-based selective catalytic reduction (SCR) exhaust after-treatment systems thus have emerged as feasible strategies to meet the 2010 USEPA regulations.

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EPA Proposes to Streamline Approval Process for Fuel Conversion Systems

Green Car Congress

The US Environmental Protection Agency (EPA) is proposing to make it easier for manufacturers to gain approval to sell fuel conversion systems. Current EPA regulations require vehicle and engine conversion systems to be covered by a certificate of conformity to gain a regulatory exemption from potential tampering charges.

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EPA updates rules to ease commercialization of alternative fuel conversion systems

Green Car Congress

The US Environmental Protection Agency (EPA) has updated rules making it easier for manufacturers to sell fuel conversion systems—i.e., Previous EPA regulations required vehicle and engine conversion systems to be covered by a certificate of conformity to gain a regulatory exemption from potential tampering charges.