{"id":136827,"date":"2024-10-19T07:53:50","date_gmt":"2024-10-19T07:53:50","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-e1367-4\/"},"modified":"2024-10-25T00:03:59","modified_gmt":"2024-10-25T00:03:59","slug":"astm-e1367-4","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-e1367-4\/","title":{"rendered":"ASTM-E1367"},"content":{"rendered":"
Scope<\/strong><\/p>\n 1.1<\/span> This test method covers procedures for testing estuarine or marine organisms in the laboratory to evaluate the toxicity of contaminants associated with whole sediments. Sediments may be collected from the field or spiked with compounds in the laboratory. General guidance is presented in Sections 1 \u2013<\/span> 15<\/span> for conducting sediment toxicity tests with estuarine or marine amphipods. Specific guidance for conducting 10-d sediment toxicity tests with estuarine or marine amphipods is outlined in Annex A1<\/span> and specific guidance for conducting 28-d sediment toxicity tests with Leptocheirus plumulosus<\/span> is outlined in Annex A2<\/span>.<\/p>\n<\/p><\/div>\n 1.2<\/span> Procedures are described for testing estuarine or marine amphipod crustaceans in 10-d laboratory exposures to evaluate the toxicity of contaminants associated with whole sediments (Annex A1<\/span>; USEPA 1994a (1<\/span>)<\/span>). Sediments may be collected from the field or spiked with compounds in the laboratory. A toxicity method is outlined for four species of estuarine or marine sediment-burrowing amphipods found within United States coastal waters. The species are Ampelisca abdita<\/span>, a marine species that inhabits marine and mesohaline portions of the Atlantic coast, the Gulf of Mexico, and San Francisco Bay; Eohaustorius estuarius<\/span>, a Pacific coast estuarine species; Leptocheirus plumulosus<\/span>, an Atlantic coast estuarine species; and Rhepoxynius abronius<\/span> , a Pacific coast marine species. Generally, the method described may be applied to all four species, although acclimation procedures and some test conditions (that is, temperature and salinity) will be species-specific (Sections 12<\/span> and Annex A1<\/span>). The toxicity test is conducted in 1-L glass chambers containing 175 mL of sediment and 775 mL of overlying seawater. Exposure is static (that is, water is not renewed), and the animals are not fed over the 10-d exposure period. The endpoint in the toxicity test is survival with reburial of surviving amphipods as an additional measurement that can be used as an endpoint for some of the test species (for R. abronius<\/span> and E. estuarius<\/span>). Performance criteria established for this test include the average survival of amphipods in negative control treatment must be greater than or equal to 90\u2009%. Procedures are described for use with sediments with pore-water salinity ranging from >0\u2009o<\/sup>\/oo<\/sub> to fully marine.<\/p>\n<\/p><\/div>\n 1.3<\/span> A procedure is also described for determining the chronic toxicity of contaminants associated with whole sediments with the amphipod Leptocheirus plumulosus<\/span> in laboratory exposures (Annex A2<\/span>; USEPA-USACE 2001(2<\/span>)<\/span>). The toxicity test is conducted for 28 d in 1-L glass chambers containing 175 mL of sediment and about 775 mL of overlying water. Test temperature is 25\u00b0 \u00b1 2\u00b0C, and the recommended overlying water salinity is 5\u2009o<\/sup>\/oo<\/sub> \u00b1 2\u2009o<\/sup>\/oo<\/sub> (for test sediment with pore water at 1\u2009o<\/sup>\/oo<\/sub> to 10\u2009o<\/sup>\/oo<\/sub> ) or 20\u2009o<\/sup>\/oo<\/sub> \u00b1 2\u2009o<\/sup>\/oo<\/sub> (for test sediment with pore water >10\u2009o<\/sup>\/oo<\/sub> ). Four hundred millilitres of overlying water is renewed three times per week, at which times test organisms are fed. The endpoints in the toxicity test are survival, growth, and reproduction of amphipods. Performance criteria established for this test include the average survival of amphipods in negative control treatment must be greater than or equal to 80\u2009% and there must be measurable growth and reproduction in all replicates of the negative control treatment. This test is applicable for use with sediments from oligohaline to fully marine environments, with a silt content greater than 5\u2009% and a clay content less than 85\u2009%.<\/p>\n<\/p><\/div>\n 1.4<\/span> A salinity of 5 or 20\u2009o<\/sup>\/oo<\/sub> is recommended for routine application of 28-d test with L. plumulosus<\/span> (Annex A2<\/span>; USEPA-USACE 2001 (2<\/span>)<\/span>) and a salinity of 20\u2009o<\/sup>\/oo<\/sub> is recommended for routine application of the 10-d test with E. estuarius<\/span> or L. plumulosus<\/span> (Annex A1<\/span>). However, the salinity of the overlying water for tests with these two species can be adjusted to a specific salinity of interest (for example, salinity representative of site of interest or the objective of the study may be to evaluate the influence of salinity on the bioavailability of chemicals in sediment). More importantly, the salinity tested must be within the tolerance range of the test organisms (as outlined in Annex A1<\/span> and Annex A2<\/span>). If tests are conducted with procedures different from those described in 1.3<\/span> or in Table A1.1<\/span> (for example, different salinity, lighting, temperature, feeding conditions), additional tests are required to determine comparability of results (1.10<\/span>). If there is not a need to make comparisons among studies, then the test could be conducted just at a selected salinity for the sediment of interest.<\/p>\n<\/p><\/div>\n 1.5<\/span> Future revisions of this standard may include additional annexes describing whole-sediment toxicity tests with other groups of estuarine or marine invertebrates (for example, information presented in Guide E1611<\/span> on sediment testing with polychaetes could be added as an annex to future revisions to this standard). Future editions to this standard may also include methods for conducting the toxicity tests in smaller chambers with less sediment (Ho et al. 2000 (3<\/span>)<\/span>, Ferretti et al. 2002 (4<\/span>)<\/span>).<\/p>\n<\/p><\/div>\n 1.6<\/span> Procedures outlined in this standard are based primarily on procedures described in the USEPA (1994a (1<\/span>)<\/span>), USEPA-USACE (2001(2<\/span>)<\/span>), Test Method E1706<\/span>, and Guides E1391<\/span>, E1525<\/span>, E1688<\/span>, Environment Canada (1992 (5<\/span>)<\/span>), DeWitt et al. (1992a (6<\/span>)<\/span>; 1997a (7<\/span>)<\/span>), Emery et al. (1997 (8<\/span>)<\/span>), and Emery and Moore (1996 (9<\/span>)<\/span>), Swartz et al. (1985 (10<\/span>)<\/span>), DeWitt et al. (1989 (11<\/span>)<\/span>), Scott and Redmond (1989 (12<\/span>)<\/span>), and Schlekat et al. (1992 (13<\/span>)<\/span>).<\/p>\n<\/p><\/div>\n 1.7<\/span> Additional sediment toxicity research and methods development are now in progress to (1)<\/span> refine sediment spiking procedures, (2)<\/span> refine sediment dilution procedures, (3)<\/span> refine sediment Toxicity Identification Evaluation (TIE) procedures, (4)<\/span> produce additional data on confirmation of responses in laboratory tests with natural populations of benthic organisms (that is, field validation studies), and (5)<\/span> evaluate relative sensitivity of endpoints measured in 10- and 28-d toxicity tests using estuarine or marine amphipods. This information will be described in future editions of this standard.<\/p>\n<\/p><\/div>\n 1.8<\/span> Although standard procedures are described in Annex A2<\/span> of this standard for conducting chronic sediment tests with L. plumulosus<\/span>, further investigation of certain issues could aid in the interpretation of test results. Some of these issues include further investigation to evaluate the relative toxicological sensitivity of the lethal and sublethal endpoints to a wide variety of chemicals spiked in sediment and to mixtures of chemicals in sediments from contamination gradients in the field (USEPA-USACE 2001 (2<\/span>)<\/span>). Additional research is needed to evaluate the ability of the lethal and sublethal endpoints to estimate the responses of populations and communities of benthic invertebrates to contaminated sediments. Research is also needed to link the toxicity test endpoints to a field-validated population model of L. plumulosus<\/span> that would then generate estimates of population-level responses of the amphipod to test sediments and thereby provide additional ecologically relevant interpretive guidance for the laboratory toxicity test.<\/p>\n<\/p><\/div>\n 1.9<\/span> This standard outlines specific test methods for evaluating the toxicity of sediments with A. abdita<\/span>, E. estuarius<\/span>, L. plumulosus<\/span>, and R. abronius<\/span>. While standard procedures are described in this standard, further investigation of certain issues could aid in the interpretation of test results. Some of these issues include the effect of shipping on organism sensitivity, additional performance criteria for organism health, sensitivity of various populations of the same test species, and confirmation of responses in laboratory tests with natural benthos populations.<\/p>\n<\/p><\/div>\n 1.10<\/span> General procedures described in this standard might be useful for conducting tests with other estuarine or marine organisms (for example, Corophium spp.<\/span>, Grandidierella japonica<\/span>, Lepidactylus dytiscus<\/span>, Streblospio benedicti<\/span>), although modifications may be necessary. Results of tests, even those with the same species, using procedures different from those described in the test method may not be comparable and using these different procedures may alter bioavailability. Comparison of results obtained using modified versions of these procedures might provide useful information concerning new concepts and procedures for conducting sediment tests with aquatic organisms. If tests are conducted with procedures different from those described in this test method, additional tests are required to determine comparability of results. General procedures described in this test method might be useful for conducting tests with other aquatic organisms; however, modifications may be necessary.<\/p>\n<\/p><\/div>\n 1.11<\/span> Selection of Toxicity Testing Organisms:<\/span><\/p>\n 1.11.1<\/span> The choice of a test organism has a major influence on the relevance, success, and interpretation of a test. Furthermore, no one organism is best suited for all sediments. The following criteria were considered when selecting test organisms to be described in this standard (Table 1<\/span> and Guide E1525<\/span>). Ideally, a test organism should: (1)<\/span> have a toxicological database demonstrating relative sensitivity to a range of contaminants of interest in sediment, (2)<\/span> have a database for interlaboratory comparisons of procedures (for example, round-robin studies), (3)<\/span> be in direct contact with sediment, (4)<\/span> be readily available from culture or through field collection, (5)<\/span> be easily maintained in the laboratory, (6)<\/span> be easily identified, (7)<\/span> be ecologically or economically important, (8)<\/span> have a broad geographical distribution, be indigenous (either present or historical) to the site being evaluated, or have a niche similar to organisms of concern (for example, similar feeding guild or behavior to the indigenous organisms), (9)<\/span> be tolerant of a broad range of sediment physico-chemical characteristics (for example, grain size), and (10)<\/span> be compatible with selected exposure methods and endpoints (Guide E1525<\/span>). Methods utilizing selected organisms should also be (11)<\/span> peer reviewed (for example, journal articles) and (12)<\/span> confirmed with responses with natural populations of benthic organisms.<\/p>\n