Plan for Analyzing Dredged Material Samples Includes What Content?

In Article 9 of the Circular 28/2019/TT-BTNMT, the regulation on the dredged material sampling analysis plan in the Vietnamese marine area includes the following main contents:

- Determining the level of quality assurance for all work of sampling, storing, and analyzing samples in accordance with the analytical methods used;

- Contents related to sample preservation conditions, sample splitting methods, sample mixing, sample volume, and corresponding laboratory equipment based on the selection of the analytical method;

- Specific quality assurance programs and the required contents to be reflected in the sample analysis report;

- Estimated time, progress, and other requirements related to the implementation of the sample analysis plan.

In the case of requiring biological analysis and testing related to dredged materials, a separate quality assurance and quality control program will be applied with the following main contents:

- Parameters to be analyzed or monitored and the level of statistical assurance required;- Standardized and published operational procedures for analysis and testing;- Conditions for conducting testing, including temperature, pH, DO, salinity, hardness, and other parameters regarding seawater quality or sediment quality;- Observing positive reactions of organisms to pollutants in the test tank to determine abnormal reactions of species when exposed to pollutants; observing negative reactions of organisms to pollutants (organisms in normal state not exposed when contacting pollutants in dredged materials);- Control charts to record the time, pollutant concentration when abnormal reactions of organisms occur.

Refer to the additional related regulations in Circular 28/2019/TT-BTNMT, effective from February 18, 2020.

Thu Ba

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