References in periodicals archive ?
In 2015, more than half of the Indian population, about 670 million citizens, were exposed to PM2.5 concentrations that did not comply with India's NAAQS for PM2.5 (40 mg/m3).
Majority particulate matters (TSP, PM10, PM2.5) were found higher than US-EPA, NAAQS, WHO and NEQS-Pak guidelines.
Despite the continued improvement of air quality, costs associated with compliance of the ozone NAAQS have significantly increased.
There are primary, health-based NAAQS, and secondary welfare-based NAAQS.
Compliance with the ozone NAAQS is determined by the 3-yr average of the annual fourth-highest daily maximum 8-h average ozone (MDA8), as recorded by ground-level ozone monitors.
At most of the studied sites in Peshawar the ambient air pollutants level was exceeding the National Ambient Air Quality Standards(NAAQS).
In 2003, various environmental groups filed suit, challenging the Bush administration's failure to update the Ozone NAAQS as required by statute.
So in early 2013, the commission sought bids from outside experts on a contract "to encourage and challenge the EPA to conduct an objective and rigorous scientific review - in order to obtain the required support for a proposed lowering of a NAAQS." The focus would be on ozone, though it could be expanded to other air pollutants like lead.
Moreover, the normal permit process gauntlet can become more demanding depending on several potential regulatory changes, including EPA's Commercial/Industrial Solid Waste Incinerator (CISWI) rules, Non-Hazardous Secondary Material (NHSM) rules, greenhouse gas regulations, and changes to the National Ambient Air Quality Standards (NAAQS) for ozone.
EPA proposed in December to reduce its National Ambient Air Quality Standard (NAAQS) for ozone from 0.075 parts per million to between 0.065-0.070 ppm.