Sample Collection Requirements. This table contains general guidance on the type of samples that may be required to be collected in the field to conduct dredged material evaluation tests. Tests Water Samples Sediment Samples Purpose Disposal Site Dredging Site Control Dredging Site Reference Site Control Tier II Water Column Screen • • Chemical analyses of disposal site water and dredging site sediments are required for model inputs. Elutriate • • • Dredging site water and sediments are used for elutriate preparation. Chemical analysis of the liquid phase of the dredged material elutriate is used to determine compliance with WQC/WQS. Chemical analysis of disposal site water and liquid phase of the elutriate is required for model inputs. Tier II Benthic • • Chemical and physical analyses of dredging site sediment samples and reference site sediment samples are required for TBP calculations. Tier III Water Column SPP Toxicity Test • • • • Organisms are exposed to dilution water, control water and the dredged material dilution series. Dredging site water and sediments are used for elutriate preparation. Disposal site water or artificial sea water may be used for dilutions. Control water is required for bioassay test acceptance. Tier III Benthic Solid Phase Toxicity Test and Bioaccumulation Test • • • • Organisms are exposed to dredging site sediments, reference sediment and control sediment for toxicity and bioaccumulation bioassays. Control sediment is required for bioassay test acceptance. Chemical analyses of organism tissues are required for bioaccumulation tests. Disposal site water, clean sea water or artificial sea water may be used to conduct bioassays. The reference areas are located within 2 - 5 nautical miles of the ODMDS and at a location opposite the direction of net transport. The reference area sediment sample for a given project must be a composite comprised of a minimum of three samples. See Appendix D for reference area locations for ODMDS in Texas and Louisiana. Reference areas for Section 103 permit applicants will be determined on a case-by-case basis.
Sample Collection Requirements. A urine or blood collection site can be a doctor's office, a clinic, or any other suitable location established by the collecting facility. The laboratory utilized to analyze the specimen must be certified and licensed to perform test. The City will utilize a testing facility of their choice for the purposes of collecting the necessary samples and performing the necessary test procedures. Generally, the employee will have a right to produce the sample in private, without being observed. The only exception is when the collection person has a particular reason to believe the employee may alter or substitute the urine sample; if they see clear signs of tampering, if the temperature of the urine is off; andƒor where the last urine test was abnormally dilute. If the employee is being observed, the person must be of the same sex. There is a two−step testing procedure. The first test, or screening test, is called an immunoassay. The most common form of this test is called an "EMIT" test. The levels for a positive finding are higher; however, this result is not communicated to the City. Rather the sample is then screened through a second confirmatory test. If the EMIT or initial screening test is negative, that is the end. It is reported as negative. If the EMIT or initial screening test is positive for one or more drugsƒalcohol, the next step is a highly accurate test called the gas chromatographyƒmass spectrometry − GSƒMS for short. If this test is negative, the whole test is reported to the City as negative. If it is positive, the next step is that the test results and procedures are reviewed by the Medical Review Officer. The Medical Review Officer, or MRO, is a doctor who is knowledgeable about drug abuse. All lab test results − positive or negative − go through the MRO. It is the MRO's job to look at every "positive" report from the lab, to talk with the employee, and to determine whether or not there is another explanation for the positive result. If the MRO finds a legitimate explanation, such as medicine use, the MRO will report the test results to the employer as "negative”. If the employee is convinced that the first lab test was wrong, the employee may ask the Medical Review Officer to have the original sample retested by a different certified lab. The second sample must have been provided by the employee at the same time as the original sample. The request for retesting must be made within 72 hours after the employee was told about the positive test. ...
