Representative concentrations definition

Representative concentrations means a typical or average concentration to which the receptor is exposed over the specified exposure duration, within a specified geographical area, and for a specific route of exposure.

Examples of Representative concentrations in a sentence

  • Representative concentrations in subsurface soil depend on the pathway and the exposure unit of the receptor.

  • Representative concentrations should be developed for each ED/DU.

  • Therefore, the sampling plan for subsurface soil is pathway-specific as described below:  Representative concentrations of COCs within each exposure unit are required to evaluate indoor and outdoor inhalation of vapor emissions from subsurface soil.

  • Representative concentrations shall be calculated for each aquifer that is or is reasonably likely to be used for domestic purposes.

  • Representative concentrations were calculated for each of the contaminants of potential concern ("COPC") for each media sampled, where possible.

  • Table 5.8 Representative concentrations of PCBs in overseas freshwater fish tissue Country Species Concentration (µg kg-1 WW)References Min.Max.

  • Table 3-4 Total Uncertainty Associated with Groundwater Plume Radionuclide Estimates Percent uncertainty FSB HSB Plume thickness 50 50 Aquifer porosity 13 13 Counting uncertainty 25 30 Well screen depth 50 50 Representative concentrations of plume zone 35 35 Radium background concentration 4 26 TOTAL UNCERTAINTY (radium 226/228) 79 85 TOTAL UNCERTAINTY (other contaminants) 79 81 It can be seen that the estimated total uncertainty is approximately ±80% for all radionuclides, and both basins.

  • MaximumArithmetic Average Other*: Calculated RBSLs exceeded saturated soil concentration and hence saturated soil concentrations are listed as RBSLs.#: Calculated RBSLs exceeded pure component water solubility and hence water solubilities are listed as RBSLs.Recommended Attachment: Representative concentrations.

  • Representative concentrations of COPCs in surface soil, subsurface soil and groundwater were determined using guidance provided in IDEQ’s Risk Evaluation Manual (REM).

  • Representative concentrations of morphine sulphate penta-hydrate in the calibrators are presented in the package insert as 0, 96.8, 195.4, 262.5, 328.2,1286.3, 1718.6, 2078.6, and 3217.5 ng/mL.

Related to Representative concentrations

  • Alcohol concentration means the number of grams of alcohol per:

  • Background concentration means such concentration of that substance as is present in:

  • In-stream Waste Concentration or "(IWC)" means the concentration of a discharge in the receiving water after mixing has occurred in the allocated zone of influence.

  • Net concentration means the difference between the concentration of a given substance in a sample taken of the discharge and the concentration of the same substances in a sample taken at the intake which supplies water to the given process. For the purpose of this definition, samples that are taken to determine the net concentration shall always be 24-hour composite samples made up of at least six increments taken at regular intervals throughout the plant day.

  • Concentration means the weight of any given material present in a unit volume of liquid. Unless otherwise indicated in this permit, concentration values shall be expressed in milligrams per liter (mg/l).

  • Derived air concentration (DAC) means the concentration of a given radionuclide in air which, if breathed by the reference man for a working year of 2,000 hours under conditions of light work, results in an intake of one ALI. For purposes of these regulations, the condition of light work is an inhalation rate of 1.2 cubic meters of air per hour for 2,000 hours in a year. DAC values are given in Part 4, Appendix 4B, Table 4B1, Column 3.

  • median concentration means that half of the homes in a county are expected to be below this value and half to be above it. All houses contain some radon, and a few houses will contain much more than the median concentration. The only way to accurately assess long-term exposure to radon in a specific house is through long-term testing (sampling the indoor air for a year or more). The EPA recommends that all homes be tested for radon. Columbia University's "Radon Project" website offers help to homeowners in assessing the cost vs. benefit of testing a specific house for radon or modifying it for radon reduction (see http://www.stat.columbia.edu/~radon/).

  • Excess Concentration means the sum of the following amounts, without duplication:

  • Concentration Accounts has the meaning ascribed to it in Annex C.

  • Residual disinfectant concentration means the concentration of disinfectant measured in mg/L in a representative sample of water.

  • Obligor Concentration Limit At any time, in relation to the aggregate Unpaid Balance of Receivables owed by any single Obligor and its Affiliated obligors (if any):

  • Baseline concentration means that ambient concentration level that exists in the baseline area at the time of the applicable minor source baseline date. A baseline concentration is deter- mined for each pollutant for which a minor source baseline date is estab- lished and shall include:

  • Excess Concentration Amount means, as of any date of determination on which any one or more of the Concentration Limitations are exceeded, an amount (calculated by the Servicer and without duplication) equal to the Dollar Equivalent of the portion of the Adjusted Principal Balance of each Eligible Collateral Loan that causes such Concentration Limitation to be exceeded.

  • Collection site means the location of waste containers on collection day.

  • Daily Concentration means the concentration of a substance as measured in a daily composite sample, or, arithmetic average of all grab sample results defining a grab sample average.

  • Special Purpose Investment Personnel means each SEI Access Person who, in connection with his or her regular functions (including, where appropriate, attendance at Board meetings and other meetings at which the official business of a Trust or any Fund thereof is discussed or carried on), obtains contemporaneous information regarding the purchase or sale of a Security by a Fund. Special Purpose Investment Personnel shall occupy this status only with respect to those Securities as to which he or she obtains such contemporaneous information.

  • Concentration Percentage means (i) for any Group AA Obligor, 30.00%, (ii) for any Group A Obligor, 17.50%, (iii) for any Group B Obligor, 15.00%, (iv) for any Group C Obligor, 12.50% and (v) for any Group D Obligor, 7.50%.

  • Critical Test Concentration or "(CTC)" means the specified effluent dilution at which the Permittee is to conduct a single-concentration Aquatic Toxicity Test.

  • Concentration Account has the meaning provided in Section 6.13(c).

  • Authorised Investments means investments authorised by the instrument, if any, creating the trust for the investment of money subject to the trust, or by law;

  • Concentration Account Bank shall have the meaning assigned to such term in Section 9.01(e)(i).

  • Approved Investment means any type of security, instrument, participation or interest in property, as set forth on Schedule I hereto (which may be amended from time to time by execution of a revised Schedule I, I-A or I-B) in which Cash Collateral may be invested or reinvested by Bank in accordance with Paragraph 2 of Article IV hereof.

  • Collection Point means the collection point for the Vehicle specified in the Confirmation and/or Rental Agreement;

  • 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.

  • Concentration Account Agreement as defined in subsection 4.16(b).