Sentence examples for per billion at from inspiring English sources

It calculates the benefits at $6.4 billion to $13 billion annually in 2025 for a standard of 70 parts per billion and $19 billion to $38 billion annually in 2025 for a standard of 65 parts per billion". At the 65 parts per billion standard the costs are $15 billion and the benefits are $19-38 billion.

Last year alone, lead levels exceeded the EPA limit of 15 parts per billion at 64 schools or daycare centers that are required to test because they have their own water systems.

Most U.S. communities meet the California standard of 10 parts per billion, Sharp said, adding that EWG believes the standard should be 1 part per billion at most.

In addition to the median, July has the lowest frequency of days when the maximum eight hour average concentration of ozone met or exceeded 76 parts per billion at a monitor (not shown) [ 42].

Cord blood samples (5 ml) were obtained for each neonate in a metal-free K3 EDTA bulb and analyzed within 48 hours of sample collection for blood lead by flameless atomic absorption spectrophotometry (Hitachi Z-8000) in parts per billion at a wavelength of 283.3 nm with a slit width of 1.3 nm using the method described by Lagesson et al [ 29].

Salinity increases to 38 parts per thousand at the Bosporus, where waters from the Sea of Marmara intrude.

The scientists' goal is to measure CO2 concentrations to an accuracy of less than 1 part per million at a resolution of 2 kilometres — comparable to the data collected by larger satellites now in orbit.

Nima says the sensors can detect peanut or gluten to 20 parts per million at a 99percentt accuracy.

To investigate the effect of formation water salinity on the rate of CO2 dissolution, a series of tests were conducted with pure water containing different concentrations of NaCl salt (i.e., 20, 40 and 80 parts per thousand) at 68 °C.

The sensor detects hydrogen concentrations down to 10 parts per million at room temperature, whereas there is no response to oxygen.

The level was about 280 parts per million at the advent of the Industrial Revolution in the 18th Century, when the burning of fossil fuels began to soar.