Contaminated Marine Sediments Assessment and Remediation (1989) / Chapter Skim
Currently Skimming:
National Status and Trends Program for Marine Environmental Quality
National Status and Trends Program for Marine Environmental Quality
Pages 47-62
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From page 47... ...
coast. The program measures concentrations of DDT and its metabolites, 9 other chlorinated pesticides, 8 polychorinated biphenyl congener groupings aggregated by chlorination number, 18 polyaromatic hydrocarbons, 12 trace elements, 4 major elements, total organic carbon, coprostanol, and Clostridium perfringens spores, as well as grain-size distribution in sediments from each site.
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From page 48... ...
The second tier involves a closer examination of the conditions at the locations that were identified of greatest concern in the first tier. Before initiating detailed field studies as part of tier 3, the available literature information and data relating to the substances and effects of concern in such areas are obtained and synthesized in order to make a more detailed evaluation of existing knowledge concerning the spatial and temporal extent of degradation in environmental quality in these areas.
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Samples have been collected annually since 1984 at about 50 benthic surveillance sites and since 1986 at about lS0 mussel watch locations. Although most locations included in these efforts have been sampled more than once, some sites have been added and omitted each year.
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FIELI) AND ANALYTICAL METHODS In the Benthic Surveillance Project, sediment samples were obtained with a specially constructed box corer or a standard Smith-MacIntyre bottom grab.
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In addition to undergoing analyses for certain organic compounds and major and trace elements, the sediments were analyzed for two biological properties, Clostrium perfringens spores (only in the Benthic Surveillance Project) and coprostanol, that can serve as indicators of the level of contamination with sewage as well as for total organic carbon and grain-size distribution.
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. bCombined and reported in this paper as total chlorinated pesticides other than DDT (tChlP)
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Table 2 lists, in descending order, the magnitude of the concentration ranges for the various contaminants. As expected, the substances that do not occur naturally have wide ranges (i.e., the synthetic organic compounds, total PCB, total DDT, and total chlorinated pesticides other than DDT)
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LA Heron Bay MS Galveston Bay TX Corpus Chnsti TX Mesquite Bay TX San Antonio Bay TX Espiritu Santo TX Frenchmans Bay ME Upper Bay Raritan Bay Sandy Hook Lower Bay Jamaica Bay Throgs Neck Harbor Is. Waterman Pt.
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Site Jamaica Bay Papys Bayou Benthic Surv. Site Sandy Hook Lower Bay Benthic Surv.
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56 TABLE 2 Ranges Defined by Ratios of High to Low Concentrations of Contaminants in Sediments Number of sites Range (ratio of with detectable 15th highest to Chemical concentrationsa 5th lowest Range ~ 1000 tDDT 164 1500 100 < Range < 1000 tPAH 162 290 tPCB 159 280 tCHlP 161 150 Mercury 171 110 50 < Range < 100 Silver 175 93 Tin 156 60 20 < Range < 50 Cadmium 175 32 Antimony 138 26 Copper 175 22 10 < Range < 20 Lead 174 18 TOC 176 16 Chromium 168 16 Selenium 146 13 Nickel 175 13 Zinc 172 10 Range < 10 Arsenic 175 7.5 NOTES: aOnly the 176 sites with at least one sample displaying a detectable concentration and > 20 percent fine-grained material have been considered. In some cases the fact that the number in this column is less than 176 is due to the chemical not having been measured rather than its not having been detected.
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nfgs Benthic Surveillance Site 63 Round Hill Angelica Rock Goosebury Nec c Benthic Surveillance Site Mount Hope Bay Conanicut Is.
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FL Matanzas R FL Biscayne Bay FL Everglades FL Rookery Bay FL Naples Bay FL CharbBe Harbor FL Charlotte Harbor FL Tampa Bay FL Tampa Bay FL Tarrpa Bay FL Ta'Tpa Bay FL Tanpa Bay FL Cedar Key FL Sandy Hook 65 16 nfgs O nfgs O 57 1 Benthic Surveillance Site 71 0 stemware Bay DE Benthic Surveillance Site 46 2 Delaware Bay DE False Egg Is.
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Harbor Bayou LA Cakasieu La" LA Satire Lake LA E Cote Blanche LA Galveston Bay TX Galveston Bay AX Galveston Bay TX Galveston Bay TX Galveston Bay TX Matago~a Bay TX MataSprda Bay TX Mata~a Bay TX Matago~a Bay TX Esp ritu Santo TX Espiritu Santo TX San Antorio Bay Ad San Antonio Bay TX San Arno~o Bay TX Mesquite Bay TX Copano Bay TX Aransas Bay Ax Corpus Chnsb Ax Corpus Christ TX Corpus Chrisb Bay Ax Lower Laguna Madre TX Lower Laguna Madre 1 X Ir~erial Beach CA San Diego Bay CA San Diego Bay CA San Diego Harbor CA Pt.
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OR Benthic Surveillance Site 27 4 Grays Harbor WA Westport Jetty ntgs 0 Strait Juan de Fuca WA Neah Bay 49 3 South Puget Sound WA Budd Inlet 98 1 NisquaUy Reach WA BerehicSunreillance Site nfgs 0 Comrnenoernent Bay WA Benthic Surveillance Site 81 1 Commencement Bay WA Tahlequah Pt. 87 1 Elliott Bay WA FourMile Rock nfgs 0 Elliott Bay WA Ber~ic Surveillance Site 46 8 r Ag(20)
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61 TABLE 3 (Cont.
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1988. National Status and Trends Program for Marine Environmental Quality: Benthic Surveillance and Mussel Watch Projects Overview.
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