Water Resources of Michigan

Contents of Contaminant Distribution in Sediments and Ground Water on and near Grassy Island

FWS Administrative Report
Lansing, Michigan 1999

By: M. J. Sweat

U.S. Geological Survey Administrative Completion Report for WRD Reimbursable Agreement No. 8-4426-06000 of USFWS Parent Project No. 14-48-0003-97-905, DCN#1448-30181-97-N520

Prepared in cooperation with the U.S. Fish and Wildlife Service

By Michael J. Sweat U.S. Geological Survey Water Resources Division 6520 Mercantile Way, Suite 5 Lansing, MI 48911-5991

(Determination of chemical concentrations of selected metals and inorganic and organic compounds at selected sites in the sediments and ground water on and near Grassy Island, Wyandotte National Wildlife Refuge, Detroit River, Wyandotte, Michigan)

Administrative Completion Report for WRD Reimbursable Agreement No. 8-4426-06000 of USFWS Parent Project No. 14-48-0003-97-905, DCN#1448-30181-97-N520

Accessible Web(HTML) version is available at:
http://mi.water.usgs.gov/pubs/MISC/FWSAR99/FWSAR99LW.php

Contents

• Executive Summary
• Introduction
• Previous Work
• Study Methods
• Data Collection and Analysis
  • Sediment
  • Water
  • Water Levels
• Distribution of Contaminants
  • Contaminants in Sediment
  • Contaminants in Water
• Additional Data and Study Needs
  • Soils and Sediment
  • Surface Water
  • Ground Water
  • Atmospherie
• References

Illustrations
Figure 1. Map showing sample locations on Grassy Island, Michigan.
Figure 2. Generalized cross-section showing average water levels in piezometers and near Grassy Island, land surface altitude, and average Detroit River altitude May-June, 1998.

Tables of Data
Table 1. Trace metals, semivolatile and volatile organic compounds, and pesticides for which laboratory analyses were made in samples from Grassy Island.
Table 2. Sample site name, location, and types of samples collected
Table 3. Lithologic description of bore holes and depths at which samples were collected
Table 4. Results of analyses for metals in sediments, Grassy Island.
Table 5. Results of analyses for semivolatile organic compounds in sediments, Grassy Island.
Table 6. Results of analyses for volatile organic compounds in sediments, Grassy Island.
Table 7. Results of analyses for pesticides and aroclors (PCBs) in sediments, Grassy Island.
Table 8. Results of analyses for metals in water, Grassy Island.
Table 9. Results of analyses for semivolatile organic compounds in water, Grassy Island.
Table 10. Results of analyses for volatile organic compounds in water, Grassy Island.
Table 11. Results of analyses for pesticides and aroclors (PCBs) in water, Grassy Island.

Abbreviated water-quality units

Chemical concentrations are given in metric units. Chemical concentration is given in milligrams per liter (mg/L), micrograms per liter (µg/L), and milligrams per kilogram (mg/kg). Milligrams per liter is a unit expressing the concentration of chemical constituents in solution as a weight (milligrams) of solute per unit volume (liter) of water. Likewise, micrograms per liter is a unit expressing the concentration of chemical constituents in solution as a weight (micrograms) of solute per unit volume (liter) of water. One thousand micrograms per liter is equivalent to one milligram per liter. For concentrations less than 7,000 mg/L, the numerical value is the same as for concentrations in parts per million. Milligrams per kilogram is a unit expressing the concentration of chemical constituents as dry weight (milligrams) of analyte per unit weight (kilograms) of dry sediment.

Vertical Datum

In this report, "sea level" refers to the National Geodetic Vertical Datum of 1929 (NGVD of 1929)-a geodetic datum derived from a general adjustment of the first-order level nets of the United States and Canada, formerly called Sea Level Datum of 1929.

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