Toxicity Reduction Evaluation definition

Toxicity Reduction Evaluation. (TRE) means a site-specific study conducted in a step-wise process to identify the causative agents of effluent toxicity, isolate the source of the toxicity, evaluate the effectiveness of the toxicity control options, and then confirm the reduction in effluent toxicity after the control measures are put in place.
Sample 1Sample 2Sample 3
Toxicity Reduction Evaluation means an investigation conducted to identify the causative agents of wastewater toxicity, isolate the source(s), determine the effectiveness of control options, implement the necessary control measures and then confirm the reduction in toxicity.
Sample 1

Examples of Toxicity Reduction Evaluation in a sentence

  • A Toxicity Reduction Evaluation is an investigation intended to determine those actions necessary to achieve compliance with water quality-based effluent limits by reducing an effluent's toxicity to an acceptable level.

  • This permit may be reopened to require further WET testing studies, Toxicity Reduction Evaluation (TRE) and/or effluent limits if WET testing data submitted to the Department shows toxicity in the permittee's discharge.

  • Within ninety (90) days of confirming lethality in the retests, the permittee shall submit a Toxicity Reduction Evaluation (TRE) Action Plan and Schedule for conducting a TRE.

  • The permittee shall use the EPA guidance manual Toxicity Reduction Evaluation Guidance for Municipal Wastewater Treatment Plants, 1999 (EPA/833/B-99/002) in preparing a TRE plan.

  • The permittee shall submit a Final Report on Toxicity Reduction Evaluation Activities no later than twenty-eight (28) months from confirming toxicity in the retests, which provides information pertaining to the specific control mechanism selected that will, when implemented, result in reduction of effluent toxicity to no significant toxicity at the critical dilution.

  • The permittee shall submit a Final Report on Toxicity Reduction Evaluation Activities no later than twenty-eight (28) months from confirming lethality in the retests, which provides information pertaining to the specific control mechanism selected that will, when implemented, result in reduction of effluent toxicity to no significant lethality at the critical dilution.

  • Part I.D.1. of this permit describes the testing procedures and Part I.D.2. describes the Toxicity Reduction Evaluation (TRE) which is only required if the effluent demonstrates toxicity in two (2) consecutive toxicity tests as described in Part I.D.1.f.

  • IF LETHAL EFFECTS HAVE BEEN DEMONSTRATED If any of the additional tests demonstrates significant lethal effects at or below the critical dilution, the permittee shall initiate Toxicity Reduction Evaluation (TRE) requirements as specified in Item 5 of this section.

  • IF SUB-LETHAL EFFECTS ONLY HAVE BEEN DEMONSTRATED If any two of the three additional tests demonstrates significant sub-lethal effects at 75% effluent or lower, the permittee shall initiate the Sub-Lethal Toxicity Reduction Evaluation (TRESL) requirements as specified in Item 5 of this section.

  • This permit may be modified, or alternately, revoked and reissued after public notice and opportunity for hearing to include Whole Effluent Toxicity (WET) limitations or to include limitations for specific toxicants if the results of the WET testing and/or the Toxicity Reduction Evaluation (TRE) study indicate that such limitations are necessary.

Related to Toxicity Reduction Evaluation

  • Clinical evaluation means a systematic and planned process to continuously generate, collect, analyse and assess the clinical data pertaining to a device in order to verify the safety and performance, including clinical benefits, of the device when used as intended by the manufacturer;

  • Site evaluation means a comprehensive analysis of soil and site conditions for an OWTS.

  • Annual summative evaluation rating means an annual evaluation rating that is based on appraisals of educator practice and student performance, and includes all measures captured in a teacher’s evaluation rubric. The four summative performance categories are ineffective, partially effective, effective, and highly effective.

  • Emission Reduction Credits means emission reductions that have been authorized by a local air pollution control district pursuant to California Health and Safety Code, Division 26 Air Resources, Sections 40709 and 40709.5, whereby such district has established a system by which all reductions in the emission of air contaminants that are to be used to offset certain future increases in the emission of air contaminants shall be banked prior to use to offset future increases in emissions.

  • Evaluation Criteria means the criteria set out under the clause 27 (Evaluation Process) of this Part C, which includes the Qualifying Criteria, Functional Criteria and Price and Preferential Points Assessment.

  • 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.

  • Performance evaluation means evaluation of work and program participation as well as other areas of behavior.

  • Independent educational evaluation means an evaluation conducted by a qualified examiner who is not employed by the public agency responsible for the education of the child in question.

  • Busy Line Verification (BLV means a service whereby an End User requests an operator to confirm the busy status of a line.

  • Medical evaluation means the process of assessing an individual's health status that includes a medical history and a physical examination of an individual conducted by a licensed medical practitioner operating within the scope of his license.

  • Clinical review criteria means the written screening procedures, decision abstracts, clinical protocols, and practice guidelines used by a health carrier to determine the necessity and appropriateness of health care services.

  • Summative evaluation means the comprehensive, end-of-cycle appraisal and shall incorporate the results of the minimum required observations, any additional observations, and required component-level data. At the discretion of the Evaluator, it may also include additional Announced, Unannounced, or Short observation data beyond the required observation data provided by other Credentialed Observers.

  • Quantitative fit test or "QNFT" means an assessment of the adequacy of respirator fit by numerically measuring the amount of leakage into the respirator.

  • Yearly (1/Year) sampling frequency means the sampling shall be done in the month of September, unless specifically identified otherwise in the effluent limitations and monitoring requirements table.

  • Semi-annual (2/Year) sampling frequency means the sampling shall be done during the months of June and December, unless specifically identified otherwise.

  • Corrective Measure The contractor shall repair any deficiencies to meet the performance guideline within warranty period.

  • Communicable disease means an illness caused by an infectious agent or its toxins that occurs through the direct or indirect transmission of the infectious agent or its products from an infected individual or via an animal, vector or the inanimate environment to a susceptible animal or human host.

  • Yearly (1/Year) sampling frequency means the sampling shall be done in the month of September, unless specifically identified otherwise in the effluent limitations and monitoring requirements table.

  • Lowest achievable emission rate or “LAER” means, for any source, the more stringent rate of emissions based on the following:

  • Semi-annual (2/Year) sampling frequency means the sampling shall be done during the months of June and December, unless specifically identified otherwise.

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

  • EPP test Means one EPP command sent to a particular “IP address” for one of the EPP servers. Query and transform commands, with the exception of “create”, shall be about existing objects in the Registry System. The response shall include appropriate data from the Registry System. The possible results to an EPP test are: a number in milliseconds corresponding to the “EPP command RTT” or undefined/unanswered.

  • Instantaneous flow measurement means the flow measured during the minimum time required for the flow-measuring device or method to produce a result in that instance. To the extent practical, instantaneous flow measurements coincide with the collection of any grab samples required for the same sampling period so that together the samples and flow are representative of the discharge during that sampling period.

  • Start-Up Testing means the completion of applicable required factory and start-up tests as set forth in Exhibit C.

  • Total Evaluated CRIS MW means the Additional CRIS MW requested plus either (i) if the Installed Capacity Supplier previously received an exemption under Sections 23.4.5.7.2(b), 23.4.5.7.6(b), 23.4.5.7.7 or 23.4.5.7.8, all prior Additional CRIS MW since the facility was last exempted under Sections 23.4.5.7.2(b), 23.4.5.7.6(b), or 23.4.5.7.8, or (ii) for all other Installed Capacity Suppliers, all MW of Capacity for which an Examined Facility obtained CRIS pursuant to the provisions in ISO OATT Sections 25, 30, or 32 (OATT Attachments S, X, or Z). For purposes of Section 23.4.5 of this Attachment H, “UCAP Offer Reference Level” shall mean a dollar value equal to the projected clearing price for each ICAP Spot Market Auction determined by the ISO on the basis of the applicable ICAP Demand Curve and the total quantity of Unforced Capacity from all Installed Capacity Suppliers in a Mitigated Capacity Zone for the period covered by the applicable ICAP Spot Market Auction. For purposes of Section 23.4.5 of this Attachment H, “Unit Net CONE” shall mean localized levelized embedded costs of a specified Installed Capacity Supplier, including interconnection costs, and for an Installed Capacity Supplier located outside a Mitigated Capacity Zone including embedded costs of transmission service, in either case net of likely projected annual Energy and Ancillary Services revenues, and revenues associated with other energy products (such as energy services and renewable energy credits, as determined by the ISO, translated into a seasonally adjusted monthly UCAP value using an appropriate class outage rate. The Unit Net CONE of an Installed Capacity Supplier that has functions beyond the generation or transmission of power shall include only the embedded costs allocated to the production and transmission of power, and shall not net the revenues from functions other than the generation or transmission of power.

  • Appropriate List Matching Data means (A) account registration and alternate payee data, to the extent made appropriate by statutes, rules or regulations governing the U.S. Government Lists, (ii) data determined by BNYM in light of statutes, rules or regulations governing the U.S. Government Lists to be necessary to provide the services described in this Section 3(b)(5), and (iii) data the parties agree in writing to be necessary to provide the services described in this Section 3(b)(5).