National Status and Trends Program: Long Island Sound Contaminants

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Frequently-anticipated questions:

What does this data set describe?

    National Status and Trends Program: Long Island Sound Contaminants
    "Survey of sediment toxicity was carried out by NOAA's National Status and Trends Program in the coastal bays that surround Long Island Sound in New York and Connecticut. Samples were talen using either a Smith-MacIntyre grab or a Van Veen grab; respectively. At each station, samples of surficial (1-3cm) sediments were taken from the grabs for the following analyses or tests: 1) acid-volatile sulfide (AVS) and simultaniously extracted metals (SEM); 2) inorganic and organic contaminants and total organic carbon (TOC); 3) grain size; and 4) sediment toxicity. Sediment samples from three stations in each of 20 coastal bays and one Long Island Sound site were tested for toxicity with three independant protocols: 1) a 10-day amphipod survival test of the whole, solid-phase sediments with Ampelisca abdita, 2) a 48-hour exposure of clam larvae, Mulinia lateralis, to sediment elutriates, with normal development and survival as the endpoints, and 3) a microbial boiluminescence test (MicrotoxR) using solvent extracts of the sediments. Seperate samples from these same stations were analyzed chemically for a broad suite of potentially toxic contaminants, including heavy metals, polynuclear aromatic hydrocarbons (PAH), chlorinated pesticides and polychlorinated biphenyls. Additional sediment samples were obtained from up to six additional stations in a few of the coastal bays; these samples were examined only for heavy metals contamination and the data are included in an appendix to this report."

  1. How should this data set be cited?

    National Oceanic and Atmospheric Administration (NOAA), 1994, National Status and Trends Program: Long Island Sound Contaminants.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -73.903500
    East_Bounding_Coordinate: -72.076500
    North_Bounding_Coordinate: 41.353000
    South_Bounding_Coordinate: 40.760000

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 1994
    Currentness_Reference: publication date

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: tabular digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • Entity point (122)

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000000. Longitudes are given to the nearest 0.000000. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.

  7. How does the data set describe geographic features?


    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Feature geometry. (Source: ESRI)

    Coordinates defining the features.





    The following fields were entered into usSEABED: SFS dataset: Station Number:LATITUDE:LONGITUDE:DEPTH(m):Depth (feet):AREA:SITE NAME ENV data: AVS (Acid-Volatile Sulfide) CMP data: TOC (% dry weight) TXR data: Grainsize %"= GrnSize (%): Gravel:Sand:Silt:Clay GCM data: Al (%) :Ag (µg/g) :As (µg/g) :Cd (µg/g) :Cr (µg/g) :Cu (µg/g) :Fe (Fe) % dry weight :Hg (µg/g) :Mn (µg/g) :Ni (µg/g) :Pb (µg/g) :Sb (µg/g) :Se (µg/g) :Si % dry weight :Sn (µg/g) :Zn (µg/g) :CL2(08)(ng/g) HCB(ng/g):LINDANE(ng/g):CL3(18)(ng/g):CL3(28)(ng/g) HEPTACHLOR(ng/g):CL4(52)(ng/g):ALDRIN(ng/g):CL4(44)(ng/g) HEPTACHLOREPOXIDE(ng/g):CL4(66)(ng/g):OPDDE(ng/g):CL5(101)(ng/g) : A CHLORDANE(ng/g):TRANSNONACHLOR(ng/g):DIELDRIN(ng/g):PPDDE(ng/g) CL4(77)(ng/g):OPDDD(ng/g):ENDRIN(ng/g):CL5(118)(ng/g) PPDDD(ng/g):OPDDT(ng/g):CL6(153)(ng/g):CL5(105)(ng/g) PPDDT(ng/g):CL6(138)(ng/g):CL5(126)(ng/g):CL7(187)(ng/g) CL6(128)(ng/g):CL7(180)(ng/g):MIREX(ng/g):CL7(170)(ng/g) CL8(195)(ng/g):CL9(206)(ng/g):CL10(209)(ng/g):naphthalene(ng/g) 2-methylnaphthalene(ng/g):1-methylnaphthalene(ng/g):biphenyl(ng/g): 2,6-dimethylnaphthalene(ng/g) :acenaphthylene(ng/g):acenaphthene(ng/g): 2;3;5-trimethylnaphthalene(ng/g):fluorene(ng/g) :phenanthrene(ng/g):anthracene(ng/g): 1-methylphenanthrene(ng/g):fluoranthene(ng/g) pyrene(ng/g):benz[a]anthracene(ng/g):chrysene(ng/g):benzo[b]fluoranthene(ng/g) benzo[k]fluoranthene(ng/g):benzo[e]pyrene(ng/g):benzo[a]pyrene(ng/g):perylene(ng/g) indeno[1;2;3-c;d]pyrene(ng/g):dibenz[a;h]anthracene(ng/g):benzo[g;h;i]perylene(ng/g) AMPItest:MeanSurv(%):SD:Sur. (% Ctrl)= AMPItest:MeanSurv(%):SD:Sur. (% Ctrl) MusselTEST:% Sur:SD:% NormalSD:Sur % Ctrl:Norm % Ctrl= MusselTEST:% Sur:SD:% Normal:SD:Sur % Ctrl:Norm % Ctrl :MICROTOXtest:EC50 mg(dw)/ml:EC50%control= MICROTOXtest:EC50 mg(dw)/ml:EC50%control

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Please review the cross reference information for the original data set credit to Wolfe, et al, 1994.

  3. To whom should users address questions about the data?

    Phil Caldwell

Why was the data set created?

The survey objectives were to determine the spatial distribution and severity of toxicity, and to analize the relationships between toxicity and chemical contamination in the sediments.

How was the data set created?

  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

    (process 1 of 1)
    Digital data were checked, formatted to dbSEABED input format, then processed using dbSEABED software to produce a range of output formats. The processing contained quality checking that may have declined to pass faulty or suspect data to outputs.

    Person who carried out this activity:

    Chris Jenkins
    Institute of Arctic & Alpine Research (INSTAAR) University of Colorado at Boulder
    1560 30th Street
    Boulder, CO 80309-0450

    (303) 492-6387 (voice)
    (303) 492-6388 (FAX)

    Data sources used in this process:
    • NOAA.exe

  3. What similar or related data should the user be aware of?

    Wolf, Douglas A. , Bricker, Suzanne B. , Long, Edward R. , Scott, K. John , and Thursby, Glen B. , August 1994, NOAA National Status and Trends Biological effects of Toxic Contamination in Sediments from Long Island Sound and Environs: NOAA Technical Memorandum NOS ORCA 80, National Ocean Service, Coastal Ocean Program, Silver Spring, MD.

    Online Links:

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

  5. How consistent are the relationships among the observations, including topology?

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None.
Use_Constraints: None.

  1. Who distributes the data set? (Distributor 1 of 1)

    Coastal Monitoring and Bioeffects Assessment Division/Office of Ocean Resources Conservation and Assessment/National Ocean Service/National Oceanic and Atmospheric Administration
    Silver Spring, MD 20910

  2. What's the catalog number I need to order this data set?

    National Status and Trends Program: Long Island Sound Contaminants

  3. What legal disclaimers am I supposed to read?

    Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy.

  4. How can I download or order the data?

Who wrote the metadata?

Last modified: 25-May-2005
Last Reviewed: 03-May-2005

Metadata author:
Jamey Reid
U.S. Geological Survey
IT Specialist (Data Management)
384 Woods Hole Rd.
Woods Hole, MA 02543-1598

(508) 548-8700 x2204 (voice)
(508) 457-2310 (FAX)

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

Generated by mp version 2.7.33 on Wed May 25 13:31:58 2005