Significant impact level definition

Significant impact level or “SIL” means the ambient air quality concentrations listed below. The threshold concentrations listed below are used for comparison against the ambient air quality standards and PSD increments established under OAR 340 division 202, but do not apply for protecting air quality related values, including visibility.
Significant impact level or “SIL” means the ambient air quality concentrations listed below. The threshold concentrations listed below are used for comparison against the ambient air quality standards and PSD increments established under OAR 340 division 202,
Significant impact level or "SIL" means the ambient air quality concentrations listed below. The threshold concentrations listed below are used for comparison against the ambient air quality standards and PSD

Examples of Significant impact level in a sentence

  • Significant impact level (SIL) analyses were not performed for this project.

  • Significant impact level for criteria pollutants.PollutantAveraging PeriodMaximum Concentration (µg/m3)Most Stringent of WAAQS or NAAQS (µg/m3)ModeledBackgroundTotalSO2Annual 24-hour 3-hour 1-hour0.031.05.18.731327353143244522621,3001,050PM10Annual 24-hour0.254.31335133950150PM2.5Annual24-hour0.254.39299331565CO8-hour 1-hour12.667.32,6682,9002,6812,96710,00040,000NO2Annual0.602728100Source: BP 2002Notes: Excludes the effect of refinery emissions reductions.

  • For sources of VOC or NOx, source has a significant impact if it is located within the ozone impact distance defined in LRAPA title 40.• "Significant impact level" or "SIL" means the ambient air quality concentrations listed in Table 1 below.


More Definitions of Significant impact level

Significant impact level or “SIL” means the ambient air quality concentrations listed in Table 1 below. The threshold concentrations listed below are used for comparison against

Related to Significant impact level

  • Working level (WL) means any combination of short-lived radon daughters in 1 liter of air that will result in the ultimate emission of 1.3E+5 MeV of potential alpha particle energy. The short-lived radon daughters are—for radon-222: polonium-218, lead-214, bismuth-214, and polonium-214; and for radon-220: polonium-216, lead-212, bismuth-212, and polonium-212.

  • Sound level meter means an instrument which includes a microphone, amplifier, RMS detector, integrator or time averager, output meter, and weighting networks used to measure sound pressure levels.

  • Working level month (WLM) means an exposure to 1 working level for 170 hours (2,000 working hours per year divided by 12 months per year is approximately equal to 170 hours per month).

  • Mean Sea Level means the average height of the sea for all stages of the tide. It is used as a reference for establishing various elevations within the floodplain. For the purposes of this Ordinance, the term is synonymous with the National Geodetic Vertical Datum (NGVD) of 1929, the North American Vertical Datum (NAVD) of 1988, or other datum, to which Base Flood Elevations shown on a community's Flood Insurance Rate Map are referenced.

  • Sound level means the A-weighted Sound Pressure Level;

  • RBC level means an insurer's company action level RBC, regulatory action level RBC, authorized control level RBC, or mandatory control level RBC where:

  • Ground Level means the level of the referred point of exposed surface of the ground as indicated in the drawing.

  • Level 1 means a charging system that provides charging through a one-hundred- twenty volt AC plug with a cord connector that meets the SAE international J1772 standard or a successor standard.

  • Barrier Level means the Barrier Level as specified in § 1 of the Product and Underlying Data.

  • Severity Level means the actual impact of a Defect on a user’s operational environment as further described in the table below.

  • Elevated blood lead level means a level of lead in blood that is any of the following:

  • Minimum Level (ML means the concentration at which the entire analytical system must give a recognizable signal and an acceptable calibration point. The ML is the concentration in a sample that is equivalent to the concentration of the lowest calibration standard analyzed by a specific analytical procedure, assuming that all the method-specified sample weights, volumes and processing steps have been followed.

  • Broadband level means all positions sufficiently similar in knowledge, skills, and abilities, and sufficiently similar as to kind or subject matter of work, level of difficulty or responsibilities, and qualification requirements of the work, to warrant the same treatment as to title, pay band, and other personnel transactions.

  • Level 4 means a project of greater than 550 kWac and not more than 1 MWac.

  • Level 2 means a charging system that provides charging through a two-hundred- eight to two-hundred-forty volt AC plug with a cord connector that meets the SAE international J1772 standard or a successor standard.

  • Base Level means the level of the Index (excluding any flash estimates) published or announced by Eurostat (or any successor entity which publishes such index) in respect of the month which is 12 calendar months prior to the month for which the Substitute Index Level is being determined;

  • Mid-level practitioner means a certified nurse-midwife engaging in the independent practice of midwifery under the independent practice of midwifery act, an advanced practice registered nurse issued a license pursuant to K.S.A. 65-1131, and amendments thereto, who has authority to prescribe drugs pursuant to a written protocol with a responsible physician under K.S.A. 65-1130, and amendments thereto, or a physician assistant licensed under the physician assistant licensure act who has authority to prescribe drugs pursuant to a written agreement with a supervising physician under K.S.A. 65-28a08, and amendments thereto.

  • Integration Level means the Social Security taxable wage base for the Plan Year, unless the Employer elects a lesser amount in (i) or (ii) below.

  • Floor Level means that stage of construction which in the completed building would constitute the walking surface of the particular floor level referred to in the table of payments.

  • Building level or district level leader means an individual employed by the District whose job assignment is that of a building level or district level administrator or an equivalent role, including an administrator licensed by the State Board of Education, an unlicensed administrator, or an individual on an Administrator Licensure Completion Plan. Building level or district level leader does not include the superintendent, deputy superintendents, associate superintendents, and assistant superintendents.

  • Second Level Domain “Second Level Domain” has the meaning given to it in this paragraph. “URL” means a web address, including the “http://” and any material appearing after a slash in the address. “Domain Name” means a URL, less the “http://” and any material appearing to the right of the next slash (‘/’) in the address. (So for example, in the URL “Xxxx://xxxxxxxxx.xxxxxxxxx.xxx/homepage.html”, the Domain Name is “XXXXXXXXX.XXXXXXXXX.XXX”.) “Top Level Domain” means the portion of the Domain Name to the right of the right-most period. (In the example, “COM”.) “Second Level Domain” means that portion of a domain name to the left of the right-most period, up to the second period from the right, if any, plus the Top Level Domain. (In the example, “XXXXXXXXX.XXX”.) “Third Level Domain” means that portion of a domain name to the left of the second period from the right, if any, up to the third period from the right, if any, plus the Second Level Domain. (In the example, “XXXXXXXXX.XXXXXXXXX.XXX”.).

  • Trigger Level means with respect to an Index, the level specified as such in Annex 1 with respect to such Index

  • regulatory action level RBC means the product of 1.5 and its authorized control level RBC;

  • Poverty level means the annual family income for a family unit of a particular size, as specified in the poverty guidelines updated annually in the Federal Register by the U.S. Department of Health and Human Services.

  • Maximum Concentration Level Assessment means the Maximum Concentration Level Assessment for the purposes of a Basic Comprehensive Certificate of Approval, described in the Basic Comprehensive User Guide, prepared by a Toxicologist using currently available toxicological information, that demonstrates that the concentration at any Point of Impingement for a Compound of Concern that does not have a Ministry Point of Impingement Limit is not likely to cause an adverse effect as defined by the EPA. The concentration at Point of Impingement for a Compound of Concern must be calculated in accordance with O. Reg. 419/05.

  • Strike Level means the Strike Level as specified in § 1 of the Product and Underlying Data.