**Table 1**. Trace metals, semivolatile and volatile organic compounds,
and pesticides for which laboratory analyses were made in samples from
Grassy Island. Detection limits are given in μg/L (parts per billion, or
ppb) for water and μg/kg dry weight (ppb) for sediments. Trace metal
detection limits are expressed as instrument detection limits obtained
for pure water. Detection limits for sediments are adjusted for the
amount of sample analyzed and percent moisture (dry weight). The water
and sediment detection limits for metals and volatile organics are the
same

+-----------------------+-----------------------+-----------------------+
| Trace Metals          |                       |                       |
| (detection limit)     |                       |                       |
+-----------------------+-----------------------+-----------------------+
| ## Aluminum (200)     | Cobalt (50)           | Potassium (5000)      |
+-----------------------+-----------------------+-----------------------+
| Antimony (60)         | Copper (25)           | Selenium (5)          |
+-----------------------+-----------------------+-----------------------+
| Arsenic (10)          | Iron (100)            | Silver (10)           |
+-----------------------+-----------------------+-----------------------+
| Barium (200)          | Lead (3)              | Sodium (5000)         |
+-----------------------+-----------------------+-----------------------+
| Beryllium (5)         | Magnesium (5000)      | Thallium (10)         |
+-----------------------+-----------------------+-----------------------+
| Cadmium (5)           | Manganese (15)        | Vanadium (50)         |
+-----------------------+-----------------------+-----------------------+
| Calcium (5000)        | Mercury (0.2)         | Zinc (20)             |
+-----------------------+-----------------------+-----------------------+
| Chromium (10)         | Nickel (40)           | ##                    |
+-----------------------+-----------------------+-----------------------+

+-----------------------------------+----------------------------------+
| Semivolatile Organics             |                                  |
|                                   |                                  |
| (detection limit water/detection  |                                  |
| limit sediment)                   |                                  |
+-----------------------------------+----------------------------------+
| Phenol (10/330)                   | Acenaphthene (10/330)            |
+-----------------------------------+----------------------------------+
| bis(2-chloroethyl)ether (10/330)  | 2,4-Dinitrophenol (10/830)       |
+-----------------------------------+----------------------------------+
| 2-Chlorophenol (10/330)           | 4-Ntirophenol(10/830)            |
+-----------------------------------+----------------------------------+
| 1,3-Dichlorobenzene (10/330)      | Dibenzofuran (10/330)            |
+-----------------------------------+----------------------------------+
| 1,4-Dichlorobenzene (10/330)      | 2,4-Dinitrotoluene(10/330)       |
+-----------------------------------+----------------------------------+
| 1,2-Dichlorobenzene (10/330)      | Diethylphthalate (10/330)        |
+-----------------------------------+----------------------------------+
| 2-Methylphenol (10/330)           | 4-chlorophenyl-phenylether       |
|                                   | (10/330)                         |
+-----------------------------------+----------------------------------+
| 2,2\'-oxybis(1-Chloropropane)     | Fluorene (10/330)                |
| (10/330)                          |                                  |
+-----------------------------------+----------------------------------+
| 4-Methylphenol (10/330)           | 4-Ntiroaniline (10/830)          |
+-----------------------------------+----------------------------------+
| N-Nitroso-di-n-propylamine        | 4,6-Dinitro-2-methylphenol       |
| (10/330)                          | (10/830)                         |
+-----------------------------------+----------------------------------+
| Hexachloroethane (10/330)         | N-Nitrosodiphenylamine (10/330)  |
+-----------------------------------+----------------------------------+
| Nitrobenzene (10/330)             | 4-Bromophenyl-phenylether        |
|                                   | (10/330)                         |
+-----------------------------------+----------------------------------+
| Isophorone (10/330)               | Hexachlorobenzene (10/330)       |
+-----------------------------------+----------------------------------+
| 2-Nitrophenol (10/330)            | Pentachlorophenol (10/830)       |
+-----------------------------------+----------------------------------+
| 2,4-Dimethylphenol (10/330)       | Phenanthrene (10/330)            |
+-----------------------------------+----------------------------------+
| bis(2-Chloroethoxy)methane        | Anthracene (10/330)              |
| (10/330)                          |                                  |
+-----------------------------------+----------------------------------+
| 2,4-Dichlorophenol (10/330)       | Carbazole (10/330)               |
+-----------------------------------+----------------------------------+
| 1,2,4-Trichlorobenzene (10/330)   | Di-n-butylphthalate (10/330)     |
+-----------------------------------+----------------------------------+
| Naphthalene (10/330)              | Fluoranthene (10/330)            |
+-----------------------------------+----------------------------------+
| 4-Chloroaniline (10/330)          | Pyrene (10/330)                  |
+-----------------------------------+----------------------------------+
| Hexachlorobutadiene (10/330)      | Butylbenzylphthalate (10/330)    |
+-----------------------------------+----------------------------------+
| 4-Chloro-3-Methylphenol (10/330)  | 3,3\'-Dichlorobenzidine (10/330) |
+-----------------------------------+----------------------------------+
| 2-Methylnaphthalene (10/330)      | Benzo(a)anthracene (10/330)      |
+-----------------------------------+----------------------------------+
| Hexachlorocyclopentadiene         | Chrysene (10/330)                |
| (10/330)                          |                                  |
+-----------------------------------+----------------------------------+
| 2,4,6-Trichlorophenol (10/330)    | bis(2-Ethylhexyl)phthalate       |
|                                   | (10/330)                         |
+-----------------------------------+----------------------------------+
| 2,4,5-Trichlorophenol (10/830)    | Di-n-octylphthalate (10/330)     |
+-----------------------------------+----------------------------------+

**Table 1**. Trace metals, semivolatile and volatile organic compounds,
and pesticides for which laboratory analyses were made in samples from
Grassy Island -- Continued

+-----------------------------------+----------------------------------+
| Semivolatile Organics --          |                                  |
| continued                         |                                  |
|                                   |                                  |
| (detection limit water/detection  |                                  |
| limit sediment)                   |                                  |
+-----------------------------------+----------------------------------+
| 2-Chloronaphthalene (10/330)      | Benzo(b)fluoranthene (10/330)    |
+-----------------------------------+----------------------------------+
| 2-Nitroaniline (10/830)           | Benzo(k)fluoranthene (10/330)    |
+-----------------------------------+----------------------------------+
| Dimethylphthalate (10/330)        | Benzo(a)pyrene (10/330)          |
+-----------------------------------+----------------------------------+
| Acenaphthylene (10/330)           | Indeno(1,2,3-cd)pyrene (10/330)  |
+-----------------------------------+----------------------------------+
| 2,6-Dinitrotoluene (10/330)       | Dibenz(a,h)anthracene (10/330)   |
+-----------------------------------+----------------------------------+
| 3-Nitroaniline (10/830)           | Benzo(g,h,i)perylene (10/330)    |
+-----------------------------------+----------------------------------+

+-----------------------------------+--------------------------------+---+
| Volatile Organics                 |                                |   |
|                                   |                                |   |
| (detection limit)                 |                                |   |
+-----------------------------------+--------------------------------+---+
| Chloromethane (10)                | cis-1,3-Dichloropropene (10)   |   |
+-----------------------------------+--------------------------------+---+
| Bromomethane (10)                 | Trichloroethene (10)           |   |
+-----------------------------------+--------------------------------+---+
| Vinyl Chloride (10)               | Dibromochloromethane (10)      |   |
+-----------------------------------+--------------------------------+---+
| Chloroethane (10)                 | 1,1,2-Trichloroethane (10)     |   |
+-----------------------------------+--------------------------------+---+
| Methylene Chloride (10)           | Benzene (10)                   |   |
+-----------------------------------+--------------------------------+---+
| Acetone (10)                      | trans-1,3-Dichloropropene (10) |   |
+-----------------------------------+--------------------------------+---+
| Carbon Disulfide (10)             | Bromoform (10)                 |   |
+-----------------------------------+--------------------------------+---+
| 1,1-Dichloroethene (10)           | 4-Methyl-2-Pentanone (10)      |   |
+-----------------------------------+--------------------------------+---+
| 1,1-Dichloroethane (10)           | 2-Hexanone (10)                |   |
+-----------------------------------+--------------------------------+---+
| 1,2-Dichloroethene (total) (10)   | Tetrachloroethene (10)         |   |
+-----------------------------------+--------------------------------+---+
| Chloroform (10)                   | 1,1,2,2-Tetrachloroethane (10) |   |
+-----------------------------------+--------------------------------+---+
| 1,2-Dichloroethane (10)           | Toluene (10)                   |   |
+-----------------------------------+--------------------------------+---+
| 2-Butanone (10)                   | Chlorobenzene (10)             |   |
+-----------------------------------+--------------------------------+---+
| 1,1,1-Trichloroethane (10)        | Ethylbenzene (10)              |   |
+-----------------------------------+--------------------------------+---+
| Carbon Tetrachloride (10)         | Styrene (10)                   |   |
+-----------------------------------+--------------------------------+---+
| Bromodichloromethane (10)         | Xylene (total) (10)            |   |
+-----------------------------------+--------------------------------+---+
| 1,2-Dichloropropane (10)          |                                |   |
+-----------------------------------+--------------------------------+---+

+-----------------------------------+--------------------------------+---+
| Pesticides                        |                                |   |
|                                   |                                |   |
| (detection limit water/detection  |                                |   |
| limit sediment)                   |                                |   |
+-----------------------------------+--------------------------------+---+
| alpha-BHC (0.05/1.7)\             | 4, 4\'-DDT (0.10/3.3)          |   |
| beta-BHC (0.05/1.7)               |                                |   |
|                                   | Methoxychlor (0.50/17.0)       |   |
| delta-BHC (0.05/1.7)              |                                |   |
|                                   | Endrin ketone (0.10/3.3)       |   |
| gamma-BHC (Lindane) (0.05/1.7)    |                                |   |
|                                   | Endrin aldehyde (0.10/3.3)     |   |
+-----------------------------------+--------------------------------+---+
| Heptachlor (0.05/1.7)             | Alpha-Chlordane (0.05/1.7)     |   |
+-----------------------------------+--------------------------------+---+
| Aldrin (0.05/1.7)                 | Gamma-Chlordane (0.05/1.7)     |   |
+-----------------------------------+--------------------------------+---+
| Heptachlor epoxide (0.05/1.7)     | Toxaphene (5.0/170.0)          |   |
+-----------------------------------+--------------------------------+---+
| Endosulfan I (0.05/1.7)           | Aroclor-1016 (1.0/33.0)        |   |
+-----------------------------------+--------------------------------+---+
| Dieldrin (0.10/3.3)               | Aroclor-1221 (2.0/67.0)        |   |
+-----------------------------------+--------------------------------+---+
| 4,4\'-DDE (0.10/3.3)              | Aroclor-1232 (1.0/33.0)        |   |
+-----------------------------------+--------------------------------+---+
| Endrin (0.10/3.3)                 | Aroclor-1242 (1.0/33.0)        |   |
+-----------------------------------+--------------------------------+---+
| Endosulfan II (0.10/3.3)          | Aroclor-1248 (1.0/33.0)        |   |
+-----------------------------------+--------------------------------+---+
| 4,4\'-DDD (0.10/3.3)              | Aroclor-1254 (1.0/33.0)        |   |
+-----------------------------------+--------------------------------+---+
| Endosulfan sulfate (0.10/3.3)     | Aroclor-1260 (1.0/33.0)        |   |
+-----------------------------------+--------------------------------+---+

**Table 2**. Sample site name, location, and types of samples collected

\[SP, sediment, parent material; S1, sediment, first sample, unsaturated
zone; S2, sediment, second sample, saturated zone; S3, sediment, third
sample, saturated zone; W, water sample; A and B designate split
samples; p designates piezometer sample; r designates river-water
sample\]

+--------------+-----------------+-------------+----------------------+
| Site Name    | Site Location   |             | Sample               |
|              |                 |             |                      |
|              |                 |             | Designation          |
+--------------+-----------------+-------------+----------------------+
|              | Latitude        | Longitude   |                      |
+--------------+-----------------+-------------+----------------------+
| 7GI 2        | 42 13 55.87     | 83 08 07.71 | SP                   |
+--------------+-----------------+-------------+----------------------+
| 7GI 4        | 42 13 46^1^     | 83 08 03^1^ | S1, S2, S3, W        |
+--------------+-----------------+-------------+----------------------+
| 7GI 5        | 42 13 44.10     | 83 08 07.90 | S1, S2, S3, SP, W    |
+--------------+-----------------+-------------+----------------------+
| 7GI 6        | 42 13 45^1^     | 83 08 03^1^ | S1, S2, S3, W        |
+--------------+-----------------+-------------+----------------------+
| 7GI 7        | 42 13 33.74     | 83 08 05.16 | S1, S2, S3           |
+--------------+-----------------+-------------+----------------------+
| 7GI 8        | 42 13 26.13     | 83 08 03.82 | S1, S2, S3A, S3B     |
+--------------+-----------------+-------------+----------------------+
| 7GI 9        | 42 13 18.21     | 83 08 03.11 | S1, S2, S3           |
+--------------+-----------------+-------------+----------------------+
| 7GI 10       | 42 13 14.70     | 83 08 04.59 | S1, S2A, S2B, S3     |
+--------------+-----------------+-------------+----------------------+
| ## 7GI 11    | 42 13 09.59     | 83 08 07.10 | S1, S2, S3, SP, WA,  |
|              |                 |             | WB                   |
+--------------+-----------------+-------------+----------------------+
| 7GI 13       | 42 13 06.85     | 83 08 08.55 | SP, Wp, Wr           |
+--------------+-----------------+-------------+----------------------+

^1^Latitude and longitude not verified for this site.

**Table 3.** Lithologic description of bore holes and depths at which
samples were collected

+--------+-----------------------------------------+--------+--------+
| Bo     | Fill Description                        | Thi    | Depth  |
| rehole |                                         | ckness | (m     |
| Number |                                         | (m     | eters) |
|        |                                         | eters) |        |
+--------+-----------------------------------------+--------+--------+
| 7GI 2  | Light blue, glacio-lacustrine clay,     | 0.25   | 0 -    |
|        | small clasts.                           |        | 0.25   |
+--------+-----------------------------------------+--------+--------+
|        |                                         |        |        |
+--------+-----------------------------------------+--------+--------+
| 7GI 4  | Light to dark brown, loamy soil, many   | 0.61   | .25 -  |
|        | roots.                                  |        | .61    |
+--------+-----------------------------------------+--------+--------+
|        | Coarse gravel and sand in black clay.   | 0.30   | .61 -  |
|        |                                         |        | .91    |
+--------+-----------------------------------------+--------+--------+
|        | Dark black, oily clay with some sand    | 0.61   | .91 -  |
|        | and sparse gravel. Near bottom of       |        | 1.52   |
|        | interval sand about 30 %.               |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Red "brick-like" material, mixed with   | 0.30   | 1.52   |
|        | dense blue clay.                        |        | -1.82  |
+--------+-----------------------------------------+--------+--------+
|        | Light blue to gray clay, very dense,    | 0.61   | 1.82-  |
|        | well formed.                            |        | 2.43   |
+--------+-----------------------------------------+--------+--------+
|        | Light blue to gray clay, very dense,    | 0.31   | 2.43   |
|        | some sand and small pebbles.            |        | -2.74  |
+--------+-----------------------------------------+--------+--------+
|        | Light-blue clay, sand about 30-40%.     | 0.61   | 2.74 - |
|        |                                         |        | 3.35   |
+--------+-----------------------------------------+--------+--------+
|        | Light-blue clay with dark brown organic | 0.31   | 3.35 - |
|        | inclusions, lime chips, possibly small  |        | 3.66   |
|        | shell fragments.                        |        |        |
+--------+-----------------------------------------+--------+--------+
|        |                                         |        |        |
+--------+-----------------------------------------+--------+--------+
| 7GI 5  | Medium to dark brown, humic soil with   | 1.22   | 0 -    |
|        | abundant decomposing plant material,    |        | 1.22   |
|        | very moist.                             |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Dark blue-gray clay, soft to very soft, | 1.98   | 1.22 - |
|        | clings to auger surface. Strong         |        | 3.20   |
|        | petroleum scent at approximately 2.9-m  |        |        |
|        | total depth.                            |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Black, sandy clay. Very dense,          | 0.15   | 3.20 - |
|        | difficult to penetrate.                 |        | 3.35   |
+--------+-----------------------------------------+--------+--------+
|        | Black, medium to coarse sand, some      | 0.61   | 3.35 - |
|        | 2.5-5 cm stones.                        |        | 3.96   |
+--------+-----------------------------------------+--------+--------+
|        | Dark black, soft clay, 60%,             | 0.30   | 3.96 - |
|        | medium-coarse gravel, 40%.              |        | 4.26   |
+--------+-----------------------------------------+--------+--------+
|        | Medium to fine gravel, coarse sand,     | 0.61   | 4.26 - |
|        | 75%, dense, blue-gray clay 25 %         |        | 4.88   |
+--------+-----------------------------------------+--------+--------+
| 7GI5   | Blue clay, dense, 50-70%, coarse, black | 0.30   | 4.88 - |
|        | sand, 35-45 %, 2.5-5 cm stones, 5%.     |        | 5.18   |
| con    |                                         |        |        |
| tinued |                                         |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Green-blue, very dense, hard clay. Some | 0.61   | 5.18 - |
|        | 1 cm stones, \< 5%.                     |        | 5.79   |
+--------+-----------------------------------------+--------+--------+
|        | Green-blue, very soft clay. Abundant    | 0.61   | 5.79 - |
|        | limestone chips and small shell         |        | 6.40   |
|        | fragments.                              |        |        |
+--------+-----------------------------------------+--------+--------+
|        |                                         |        |        |
+--------+-----------------------------------------+--------+--------+
| 7GI 6  | Dark blue to black clay, semi-liquid,   | 2.13   | 0 -    |
|        | soft, near liquid consistency.          |        | 2.13   |
+--------+-----------------------------------------+--------+--------+
|        | Dark blue to black clay, semi-liquid,   | 0.61   | 2.13 - |
|        | soft, near liquid consistency,          |        | 2.74   |
|        | petroleum odor.                         |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Dark blue to black clay, semi-liquid,   | 3.05   | 2.74 - |
|        | soft, near liquid consistency. Color    |        | 5.79   |
|        | lightens with depth to light gray.      |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Light gray clay mixed with sand,        | .61    | 5.79 - |
|        | gravel, possibly some shell fragments.  |        | 6.40   |
+--------+-----------------------------------------+--------+--------+
|        |                                         |        |        |
+--------+-----------------------------------------+--------+--------+
| 7GI 7  | Brown, loose, loamy soil, abundant      | 0.15   | 0 -    |
|        | earth worms.                            |        | 0.15   |
+--------+-----------------------------------------+--------+--------+
|        | Light gray to brown, loose, loamy soil  | 0.76   | .15 -  |
|        | with abundant organic matter and earth  |        | .91    |
|        | worms.                                  |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Blue gray, dense clay. Small roots and  | 0.46   | .91 -  |
|        | rust runners. Very low moisture         |        | 1.37   |
|        | content, moisture increases with depth. |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Brown, semi-liquid, loamy clay with     | 0.61   | 1.37 - |
|        | some small roots.                       |        | 1.98   |
+--------+-----------------------------------------+--------+--------+
|        | Blue gray, dense, well compacted clay.  | 1.22   | 1.98 - |
|        | Slight odor.                            |        | 3.20   |
+--------+-----------------------------------------+--------+--------+
|        | Black sand, very fine, dense, difficult | 0.46   | 3.20 - |
|        | to drive split spoon.                   |        | 3.66   |
+--------+-----------------------------------------+--------+--------+
|        | Black sand, very fine, dense,           | 0.30   | 3.66 - |
|        | semi-liquid.                            |        | 3.96   |
+--------+-----------------------------------------+--------+--------+
|        | Black sand, very fine, some small rocks | 1.22   | 3.96 - |
|        | and blue clay.                          |        | 5.18   |
+--------+-----------------------------------------+--------+--------+
|        | Light blue, dense clay with clasts.     | 0.61   | 5.18 - |
|        |                                         |        | 5.79   |
+--------+-----------------------------------------+--------+--------+
|        |                                         |        |        |
+--------+-----------------------------------------+--------+--------+
| 7GI 8  | Brown, loose, loamy soil, abundant tree | 0.30   | 0 -    |
|        | roots and organic matter.               |        | 0.30   |
+--------+-----------------------------------------+--------+--------+
|        | Brown to gray, light, loose, sandy loam | 0.91   | .30 -  |
|        | soil, some clay.                        |        | 1.21   |
+--------+-----------------------------------------+--------+--------+
|        | Rust covered gravel and small stones,   | 0.46   | 1.21 - |
|        | moist.                                  |        | 1.67   |
+--------+-----------------------------------------+--------+--------+
|        | Brown to gray, light clay               | 1.07   | 1.67 - |
|        |                                         |        | 2.74   |
+--------+-----------------------------------------+--------+--------+
|        | Black, sandy clay. Strong petroleum     | 0.61   | 2.74 - |
|        | odor.                                   |        | 3.35   |
+--------+-----------------------------------------+--------+--------+
|        | Black to gray, sandy clay, slight       | 0.31   | 3.35 - |
|        | petroleum odor.                         |        | 3.66   |
+--------+-----------------------------------------+--------+--------+
|        | Black, liquid clay with some sand.      | 1.52   | 3.66 - |
|        |                                         |        | 5.18   |
+--------+-----------------------------------------+--------+--------+
|        | Dark black, liquid clay with some sand. | 0.31   | 5.18 - |
|        | No odor.                                |        | 5.49   |
+--------+-----------------------------------------+--------+--------+
| 7GI 9  | Light brown, rust red, loamy soil.      | 0.08   | 0 -    |
|        |                                         |        | 0.08   |
+--------+-----------------------------------------+--------+--------+
|        | Light brown, sandy, loose, loamy soil.  | 1.14   | .08 -  |
|        | Abundant earth worms, multi-legged      |        | 1.22   |
|        | insects, beetles, and other             |        |        |
|        | unidentified insects.                   |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Brown, sandy clay soil, moist.          | 0.46   | 1.22 - |
|        |                                         |        | 1.68   |
+--------+-----------------------------------------+--------+--------+
|        | Brown, sandy clay soil, semi-liquid,    | 0.61   | 1.68 - |
|        | water can be seen flowing down side of  |        | 2.29   |
|        | borehole. Crumbly texture.              |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Blue to black clay, medium density,     | 0.46   | 2.29 - |
|        | soft. Maintains shape, "breaks" along   |        | 2.75   |
|        | planes with sufficient pressure. Yields |        |        |
|        | water upon pressure.                    |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Dark black, very soft clay.             | 0.91   | 2.75 - |
|        | Semi-liquid, will not hold shape.       |        | 3.66   |
+--------+-----------------------------------------+--------+--------+
|        |                                         |        |        |
+--------+-----------------------------------------+--------+--------+
| 7GI 10 | Light brown to light red, sandy, loamy  | 1.22   | 0 -    |
|        | soil with some black sand. Numerous     |        | 1.22   |
|        | small roots and organic plant material. |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Steel gray to blue, dense, hard clay.   | 1.07   | 1.22 - |
|        | Fragments of glass, rusted metal        |        | 2.29   |
|        | flakes, some sand. Semi-liquid.         |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Dark black to gray, dense, hard clay.   | 0.46   | 2.29 - |
|        | Fragments of orange plastic, glass,     |        | 2.75   |
|        | some stones. Strong petroleum odor.     |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Dark black, liquid clay.                | 0.61   | 2.75 - |
|        |                                         |        | 3.36   |
+--------+-----------------------------------------+--------+--------+
|        | Dark black, liquid "sludge," very foul  | 0.61   | 3.36 - |
|        | smelling -- combination of petroleum    |        | 3.97   |
|        | and decaying matter.                    |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Dark black, liquid "sludge" with strong | 0.61   | 3.97   |
|        | petroleum odor. Oily blue sheen evident |        | -4.58  |
|        | on liquid oozing from sample.           |        |        |
+--------+-----------------------------------------+--------+--------+
|        |                                         |        |        |
+--------+-----------------------------------------+--------+--------+
| 7GI 11 | Brown, loamy, organic rich soil with    | 0.20   | 0 -    |
|        | some sand and gravel.                   |        | 0.20   |
+--------+-----------------------------------------+--------+--------+
|        | Brown sand and gravel, equal            | 0.10   | .20 -  |
|        | proportions. Semi-liquid.               |        | .30    |
+--------+-----------------------------------------+--------+--------+
|        | Brown to buff, streaked with black mix  | 2.13   | .30 -  |
|        | of sand, shells, and gravel. 80% sand,  |        | 2.43   |
|        | 10 % silt and clay, 5% gravel, 5%       |        |        |
|        | shells. Black streaks have strong       |        |        |
|        | petroleum odor.                         |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Black, soft clay with strong petroleum  | 0.31   | 2.43   |
|        | odor.                                   |        | -2.74  |
+--------+-----------------------------------------+--------+--------+
|        | Black, oily clay with pieces of wood.   | 0.92   | 2.74   |
|        | Strong petroleum odor.                  |        | -3.66  |
+--------+-----------------------------------------+--------+--------+
|        | Brown, grading to black, woody material | 0.61   | 3.66   |
|        | mixed with clay, sand, and shells.      |        | -4.27  |
|        | Shells are mainly ostracods and         |        |        |
|        | mollusks.                               |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Black, oily clay (85%) mixed with sand  | 0.61   | 4.27   |
|        | and gravel (15%). Still some small      |        | -4.88  |
|        | shell and wood fragments.               |        |        |
+--------+-----------------------------------------+--------+--------+
|        | Green clay and sand, some small stones. | 0.30   | 4.88   |
|        | Dense and well consolidated.            |        | -5.18  |
+--------+-----------------------------------------+--------+--------+
|        | Light green-blue-gray clay with less    | 0.30   | 5.18 - |
|        | than 10% sand.                          |        | 5.48   |
+--------+-----------------------------------------+--------+--------+
|        |                                         |        |        |
+--------+-----------------------------------------+--------+--------+
| 7GI 13 | Light blue, glaciolacustrine clay,      | 0.25   | 0 -    |
|        | small clasts.                           |        | 0.25   |
+--------+-----------------------------------------+--------+--------+

**Table 4.** Results of analyses for metals in sediments, Grassy Island.
Detection limits are given in parentheses below name of analyte. Trace
metal detection limits and results, in mg/kg, milligrams per kilogram;
also, parts per million or ppm, are expressed as instrument detection
limits obtained for pure water. Detection limits and results for
sediments are adjusted for the amount of sample analyzed and percent
moisture, and reported as dry weight; \--, not detected. Results are
given only for those analytes that were detected in one or more samples

+---------+------+------+---------+------+---------+--------+------+
| Field   | Lab  | Sa   | A       | Ars  | C       | Iron   | Lead |
| ID      | ID   | mple | luminum | enic | hromium |        |      |
|         |      | D    |         |      |         | \      | \    |
|         |      | epth | \(200\) | \(   | \(10\)  | (100\) | (3\) |
|         |      | (me  |         | 10\) |         |        |      |
|         |      | ters |         |      |         |        |      |
|         |      | b    |         |      |         |        |      |
|         |      | elow |         |      |         |        |      |
|         |      | surf |         |      |         |        |      |
|         |      | ace) |         |      |         |        |      |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 2SP | F1   | 5.18 | 1       | \--  | \--     | 12     | 9.41 |
|         | 7382 |      | 0882.50 |      |         | 140.80 |      |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 4S1 | F1   | 0.91 | 1       | \--  | \--     | 21     | 3    |
|         | 7371 |      | 0321.00 |      |         | 143.80 | 6.94 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 4S2 | F1   | 2.74 | 8846.70 | 1    | \--     | 17     | 3.32 |
|         | 7372 |      |         | 1.60 |         | 013.60 |      |
+---------+------+------+---------+------+---------+--------+------+
| ##      | F1   | 3.66 | 1       | \--  | \--     | 22     | 3.10 |
| 7GI 4SP | 7373 |      | 5053.80 |      |         | 254.20 |      |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 5S1 | F1   | .30  | 1       | \--  | 196.50  | 39     | 32   |
|         | 7384 |      | 5493.90 |      |         | 992.10 | 5.60 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 5S2 | F1   | 3.05 | 1       | \--  | 232.20  | 57     | 40   |
|         | 7385 |      | 5996.80 |      |         | 340.10 | 4.30 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 5S3 | F1   | 4.57 | 1       | 1    | \--     | 10     | \--  |
|         | 7386 |      | 5996.80 | 3.22 |         | 929.40 |      |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 5SP | F1   | 6.10 | \--     | \--  | \--     | 11     | \--  |
|         | 7387 |      |         |      |         | 219.80 |      |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 6S1 | F1   | .30  | 1       | 2    | 256.58  | 47     | 5    |
|         | 7368 |      | 5929.90 | 2.50 |         | 369.30 | 8.50 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 6S2 | F1   | 2.44 | 1       | \--  | 306.20  | 70     | 53   |
|         | 7369 |      | 5866.50 |      |         | 199.10 | 0.10 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 6S3 | F1   | 6.10 | 8409.10 | 1    | \--     | 22     | 3    |
|         | 7370 |      |         | 3.20 |         | 151.80 | 0.26 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 7S1 | F1   | 1.22 | 1       | 1    | 198.46  | 44     | 24   |
|         | 7374 |      | 3529.60 | 1.81 |         | 526.09 | 5.10 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 7S2 | F1   | 3.35 | 4738.80 | \--  | \--     | \--    | 1    |
|         | 7375 |      |         |      |         |        | 5.08 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 7S3 | F1   | 6.10 | 1       | 1    | 212.60  | 53     | 27   |
|         | 7376 |      | 5538.30 | 5.90 |         | 718.99 | 7.10 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 8S1 | F1   | .91  | 5058.10 | 1    | \--     | 33     | 7    |
|         | 7377 |      |         | 2.40 |         | 769.90 | 7.90 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 8S2 | F1   | 3.66 | 6244.00 | \--  | \--     | 36     | 3    |
|         | 7378 |      |         |      |         | 381.50 | 9.80 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 8S3 | F1   | 5.49 | 8370.40 | \--  | \--     | 42     | \--  |
|         | 7379 |      |         |      |         | 880.70 |      |
+---------+------+------+---------+------+---------+--------+------+
| 7GI     |      | 5.49 | \--     | \--  | \--     | \--    | \--  |
| 8S3B    |      |      |         |      |         |        |      |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 9S1 | F1   | .30  | \--     | 1    | 204.40  | 38     | 40   |
|         | 7397 |      |         | 7.70 |         | 878.90 | 3.50 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 9S2 | F1   | 2.44 | 1       | \--  | 218.70  | 42     | 39   |
|         | 7398 |      | 5031.70 |      |         | 600.70 | 3.10 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI 9S3 | F1   | 3.96 | 8905.10 | \--  | 223.70  | 71     | 34   |
|         | 7399 |      |         |      |         | 181.00 | 9.90 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI     | F1   | .91  | \--     | \--  | 199.30  | 31     | 19   |
| 10S1    | 7388 |      |         |      |         | 901.40 | 4.50 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI     | F1   | 1.52 | \--     | 1    | \--     | 36     | 23   |
| 10S2A   | 7389 |      |         | 6.13 |         | 652.70 | 1.80 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI     |      | 1.52 | \--     | \--  | \--     | \--    | \--  |
| 10S2B   |      |      |         |      |         |        |      |
+---------+------+------+---------+------+---------+--------+------+
| 7GI     | F1   | 4.27 | 1       | \--  | 246.70  | 68     | 45   |
| 10S3    | 7391 |      | 3989.00 |      |         | 519.10 | 9.30 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI     | F1   | .15  | \--     | \--  | \--     | 32     | 11   |
| 11S1    | 7392 |      |         |      |         | 610.00 | 9.40 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI     | F1   | 2.44 | 1       | 1    | 247.70  | 74     | 52   |
| 11S2    | 7393 |      | 2896.00 | 3.23 |         | 912.90 | 6.10 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI     | F1   | 4.57 | 4647.50 | 1    | \--     | 24     | 9    |
| 11S3    | 7394 |      |         | 4.13 |         | 834.60 | 8.10 |
+---------+------+------+---------+------+---------+--------+------+
| 7GI     | F1   | 5.49 | \--     | \--  | \--     | 13     | \--  |
| 11SP    | 7395 |      |         |      |         | 876.00 |      |
+---------+------+------+---------+------+---------+--------+------+
| 7GI     | F1   | 3.66 | 9509.00 | \--  | \--     | 19     | \--  |
| 13SP    | 7383 |      |         |      |         | 021.30 |      |
+---------+------+------+---------+------+---------+--------+------+

**Table 4.** Results of analyses for metals in sediments, Grassy Island
-- Continued

+---------------+---------------+-----------+------------+-----------+
| Field ID      | Manganese     | Mercury   | Selenium   | Zinc      |
|               |               |           |            |           |
|               | \(15\)        | (0.2)     | \(5\)      | \(20\)    |
+---------------+---------------+-----------+------------+-----------+
| 7GI 2SP       | \--           | \--       | \--        | \--       |
+---------------+---------------+-----------+------------+-----------+
| 7GI 4S1       | 539.40        | \--       | \--        | \--       |
+---------------+---------------+-----------+------------+-----------+
| 7GI 4S2       | 298.80        | \--       | \--        | \--       |
+---------------+---------------+-----------+------------+-----------+
| 7GI 4SP       | \--           | \--       | \--        | \--       |
+---------------+---------------+-----------+------------+-----------+
| 7GI 5S1       | 718.70        | 0.73      | \--        | 867.50    |
+---------------+---------------+-----------+------------+-----------+
| 7GI 5S2       | 831.60        | .80       | \--        | 1143.50   |
+---------------+---------------+-----------+------------+-----------+
| 7GI 5S3       | 339.00        | \--       | \--        | \--       |
+---------------+---------------+-----------+------------+-----------+
| 7GI 5SP       | 271.20        | \--       | \--        | \--       |
+---------------+---------------+-----------+------------+-----------+
| 7GI 6S1       | 1050.70       | .94       | \--        | 1081.60   |
+---------------+---------------+-----------+------------+-----------+
| 7GI 6S2       | 811.50        | 1.18      | \--        | 1284.10   |
+---------------+---------------+-----------+------------+-----------+
| 7GI 6S3       | 410.90        | \--       | \--        | \--       |
+---------------+---------------+-----------+------------+-----------+
| 7GI 7S1       | 766.15        | .81       | \--        | 848.20    |
+---------------+---------------+-----------+------------+-----------+
| ## 7GI 7S2    | 256.50        | \--       | \--        | \--       |
+---------------+---------------+-----------+------------+-----------+
| 7GI 7S3       | 846.57        | .84       | \--        | 1264.30   |
+---------------+---------------+-----------+------------+-----------+
| 7GI 8S1       | 542.90        | .55       | \--        | 354.50    |
+---------------+---------------+-----------+------------+-----------+
| 7GI 8S2       | 688.70        | .50       | \--        | 559.70    |
+---------------+---------------+-----------+------------+-----------+
| 7GI 8S3       | 737.20        | .55       | \--        | 655.00    |
+---------------+---------------+-----------+------------+-----------+
| 7GI 8S3B      | \--           | \--       | \--        | \--       |
+---------------+---------------+-----------+------------+-----------+
| 7GI 9S1       | 566.10        | .95       | \--        | 951.70    |
+---------------+---------------+-----------+------------+-----------+
| 7GI 9S2       | 599.60        | .74       | \--        | 945.30    |
+---------------+---------------+-----------+------------+-----------+
| 7GI 9S3       | 710.40        | .83       | \--        | 805.90    |
+---------------+---------------+-----------+------------+-----------+
| 7GI 10S1      | 937.70        | .86       | \--        | 399.10    |
+---------------+---------------+-----------+------------+-----------+
| 7GI 10S2A     | 668.90        | 1.41      | \--        | 621.50    |
+---------------+---------------+-----------+------------+-----------+
| 7GI 10S2B     | \--           | \--       | \--        | \--       |
+---------------+---------------+-----------+------------+-----------+
| 7GI 10S3      | 848.80        | .87       | \--        | 1255.90   |
+---------------+---------------+-----------+------------+-----------+
| 7GI 11S1      | 805.80        | .26       | \--        | 311.10    |
+---------------+---------------+-----------+------------+-----------+
| 7GI 11S2      | 879.70        | .91       | \--        | 1486.00   |
+---------------+---------------+-----------+------------+-----------+
| 7GI 11S3      | 353.60        | \--       | \--        | \--       |
+---------------+---------------+-----------+------------+-----------+
| 7GI 11SP      | 348.10        | \--       | \--        | \--       |
+---------------+---------------+-----------+------------+-----------+
| 7GI 13SP      | 372.20        | \--       | \--        | \--       |
+---------------+---------------+-----------+------------+-----------+

**Table 5.** Results of analyses for semivolatile organic compounds in
sediments, Grassy Island. Detection limits are given in parentheses
below name of analyte. Sediment sample detection limits and results in
μg/kg (micrograms per kilogram, or ppb, dry weight of sample); \--, not
detected. Results are given only for those analytes that were detected
in one or more samples

+----------+-------+-------+--------+----------+-----------+-----------+
| Field ID | Lab   | S     | Phenol | Is       | 2-Ni      | Na        |
|          | ID    | ample |        | ophorone | trophenol | phthalene |
|          |       | Depth | \      |          |           |           |
|          |       | (m    | (330\) | \(330\)  | \(330\)   | \(330\)   |
|          |       | eters |        |          |           |           |
|          |       | below |        |          |           |           |
|          |       | sur   |        |          |           |           |
|          |       | face) |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 2SP  | F     | 5.18  | \--    | \--      | \--       | \--       |
|          | 17382 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 4S1  | F     | 0.91  | \--    | \--      | \--       | \--       |
|          | 17371 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 4S2  | F     | 2.74  | \--    | \--      | \--       | \--       |
|          | 17372 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 4SP  | F     | 3.66  | \--    | \--      | \--       | \--       |
|          | 17373 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 5S1  | F     | .30   | \--    | \--      | \--       | 3467      |
|          | 17384 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| ##       | F     | 3.05  | \--    | \--      | \--       | 11341     |
|  7GI 5S2 | 17385 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 5S3  | F     | 4.57  | \--    | \--      | \--       | \--       |
|          | 17386 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 5SP  | F     | 6.10  | \--    | \--      | \--       | \--       |
|          | 17387 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 6S1  | F     | .30   | \--    | \--      | \--       | 1852      |
|          | 17368 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 6S2  | F     | 2.44  | \--    | 1168     | \--       | 10685     |
|          | 17369 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 6S3  | F     | 6.10  | \--    | \--      | \--       | 424       |
|          | 17370 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 7S1  | F     | 1.22  | 651    | \--      | \--       | 4094      |
|          | 17374 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 7S2  | F     | 3.35  | \--    | \--      | \--       | 457       |
|          | 17375 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 7S3  | F     | 6.10  | \--    | \--      | \--       | 11905     |
|          | 17376 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 8S1  | F     | .91   | \--    | \--      | \--       | 2692      |
|          | 17377 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 8S2  | F     | 3.66  | \--    | \--      | 867       | 831       |
|          | 17378 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 8S3  | F     | 5.49  | \--    | \--      | \--       | 11387     |
|          | 17379 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 8S3B |       | 5.49  | \--    | \--      | \--       | \--       |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 9S1  | F     | .30   | \--    | \--      | \--       | \--       |
|          | 17397 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 9S2  | F     | 2.44  | \--    | \--      | \--       | 13999     |
|          | 17398 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 9S3  | F     | 3.96  | \--    | 1491     | \--       | 7792      |
|          | 17399 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 10S1 | F     | .91   | \--    | \--      | \--       | 2413      |
|          | 17388 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI      | F     | 1.52  | \--    | \--      | \--       | 11367     |
| 10S2A    | 17389 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI      |       | 1.52  | \--    | \--      | \--       | 7705      |
| 10S2B    |       |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 10S3 | F     | 4.27  | \--    | \--      | \--       | 11646     |
|          | 17391 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 11S1 | F     | .15   | \--    | \--      | \--       | 2851      |
|          | 17392 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 11S2 | F     | 2.44  | \--    | \--      | \--       | 10156     |
|          | 17393 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 11S3 | F     | 4.57  | \--    | \--      | \--       | 2239      |
|          | 17394 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 11SP | F     | 5.49  | \--    | \--      | \--       | \--       |
|          | 17395 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+
| 7GI 13SP | F     | 3.66  | \--    | \--      | \--       | \--       |
|          | 17383 |       |        |          |           |           |
+----------+-------+-------+--------+----------+-----------+-----------+

**Table 5**. Results of analyses for semivolatile organic compounds in
sediments, Grassy Island -- Continued

+----------+------------+------------+--------------+----------------+
| Field ID | Ac         | Di         | 4-           | N-Nitroso      |
|          | enaphthene | benzofuran | chlorophenyl | -diphenylamine |
|          |            |            | -phenylether | (1)            |
|          | \(330\)    | \(330\)    |              |                |
|          |            |            | \(330\)      | \(330\)        |
+----------+------------+------------+--------------+----------------+
| 7GI 2SP  | \--        | \--        | \--          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 4S1  | \--        | \--        | \--          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 4S2  | \--        | \--        | \--          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 4SP  | \--        | \--        | \--          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 5S1  | 794        | 1223       | 927          | 554            |
+----------+------------+------------+--------------+----------------+
| 7GI 5S2  | 4931       | 2646       | 4657         | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 5S3  | \--        | \--        | 421          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 5SP  | \--        | \--        | 609          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 6S1  | \--        | 674        | \--          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 6S2  | 868        | 1446       | 1086         | 5414           |
+----------+------------+------------+--------------+----------------+
| ##       | \--        | \--        | 526          | \--            |
|  7GI 6S3 |            |            |              |                |
+----------+------------+------------+--------------+----------------+
| 7GI 7S1  | \--        | 607        | 560          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 7S2  | \--        | \--        | \--          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 7S3  | 6359       | \--        | \--          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 8S1  | 664        | 609        | 927          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 8S2  | 4747       | \--        | \--          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 8S3  | 9514       | 6321       | 8973         | 2281           |
+----------+------------+------------+--------------+----------------+
| 7GI 8S3B | \--        | \--        | \--          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 9S1  | 780        | 901        | 720          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 9S2  | 27858      | 9644       | 14518        | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 9S3  | 23864      | 17975      | 21224        | 7560           |
+----------+------------+------------+--------------+----------------+
| 7GI 10S1 | 559        | 580        | 786          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI      | 3868       | 2840       | 4005         | \--            |
| 10S2A    |            |            |              |                |
+----------+------------+------------+--------------+----------------+
| 7GI      | 2688       | 1887       | 2633         | \--            |
| 10S2B    |            |            |              |                |
+----------+------------+------------+--------------+----------------+
| 7GI 10S3 | 7343       | 3480       | 5893         | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 11S1 | 618        | 669        | 744          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 11S2 | 8255       | 3516       | 6141         | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 11S3 | 1858       | 805        | 1453         | 978            |
+----------+------------+------------+--------------+----------------+
| 7GI 11SP | \--        | \--        | \--          | \--            |
+----------+------------+------------+--------------+----------------+
| 7GI 13SP | \--        | \--        | \--          | \--            |
+----------+------------+------------+--------------+----------------+

**Table 5.** Results of analyses for semivolatile organic compounds in
sediments, Grassy Island -- Continued

+---------+-----------+---------+---------+-------+-------+---------+
| Field   | Phe       | Ant     | Ca      | Flu   | P     | B       |
| ID      | nanthrene | hracene | rbazole | or-an | yrene | enzo(a) |
|         |           |         |         | thene |       | ant     |
|         | \(330\)   | \(330\) | \(330\) |       | \(    | hracene |
|         |           |         |         | \(    | 330\) |         |
|         |           |         |         | 330\) |       | \(330\) |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 2SP | \--       | \--     | \--     | \--   | \--   | \--     |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 4S1 | 917       | \--     | \--     | 1282  | 1555  | 897     |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 4S2 | \--       | \--     | \--     | 585   | 888   | 489     |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 4SP | \--       | \--     | \--     | \--   | \--   | \--     |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 5S1 | 8006      | 4143    | 843     | 4858  | 9004  | 5496    |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 5S2 | 9401      | 4227    | \--     | 8345  | 11717 | 6536    |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 5S3 | 922       | 439     | \--     | 811   | 1372  | 509     |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 5SP | 1916      | 895     | \--     | 2471  | 2007  | 1342    |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 6S1 | 3011      | 1008    | \--     | 1439  | 6768  | 2575    |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 6S2 | 33821     | 7006    | 844     | 16830 | 34364 | 12765   |
+---------+-----------+---------+---------+-------+-------+---------+
| ##      | 1750      | 671     | \--     | 1381  | 1597  | 1057    |
| 7GI 6S3 |           |         |         |       |       |         |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 7S1 | 3979      | 1434    | \--     | 3002  | 7876  | 4046    |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 7S2 | 740       | \--     | \--     | 768   | 876   | \--     |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 7S3 | \--       | \--     | \--     | \--   | \--   | \--     |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 8S1 | 5622      | 2731    | \--     | 6194  | 11712 | 7211    |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 8S2 | \--       | \--     | \--     | \--   | \--   | \--     |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 8S3 | 86513     | 27040   | 7738    | 51767 | 65807 | 31605   |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI     | \--       | \--     | \--     | \--   | \--   | \--     |
| 8S3B    |           |         |         |       |       |         |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 9S1 | 4359      | 2548    | 821     | 3095  | 8695  | 6582    |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 9S2 | 31311     | 14156   | 9607    | 24925 | 46358 | 29326   |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI 9S3 | 165694    | 60790   | 33334   | 65498 | 52036 | 31006   |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI     | 3937      | 1896    | 478     | 2602  | 5905  | 3296    |
| 10S1    |           |         |         |       |       |         |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI     | 6940      | 4617    | 982     | 8251  | 10358 | 6855    |
| 10S2A   |           |         |         |       |       |         |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI     | 5419      | 3504    | 902     | 6152  | 9638  | 5535    |
| 10S2B   |           |         |         |       |       |         |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI     | 25413     | 9758    | 2206    | 9981  | 12850 | 9914    |
| 10S3    |           |         |         |       |       |         |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI     | 4128      | 2059    | 1087    | 5246  | 9138  | 7288    |
| 11S1    |           |         |         |       |       |         |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI     | 28857     | 8575    | 2119    | 10487 | 10530 | 6721    |
| 11S2    |           |         |         |       |       |         |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI     | 5112      | 1639    | 457     | 1922  | 3031  | 1367    |
| 11S3    |           |         |         |       |       |         |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI     | \--       | \--     | \--     | 444   | 491   | 431     |
| 11SP    |           |         |         |       |       |         |
+---------+-----------+---------+---------+-------+-------+---------+
| 7GI     | \--       | \--     | \--     | \--   | \--   | \--     |
| 13SP    |           |         |         |       |       |         |
+---------+-----------+---------+---------+-------+-------+---------+

**Table 5.** Results of analyses for semivolatile organic compounds in
sediments, Grassy Island -- Continued

+---------+--------+-----------+-----------+------------+------------+
| Field   | Ch     | bis(2-Et  | D         | Benzo(b)   | Benzo(k)   |
| ID      | rysene | hylhexyl) | i-n-octyl | fl         | fl         |
|         |        | phthalate | phthalate | uoranthene | uoranthene |
|         | \      |           |           |            |            |
|         | (330\) | \(330\)   | \(330\)   | \(330\)    | \(330\)    |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 2SP | \--    | \--       | \--       | \--        | \--        |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 4S1 | 817    | \--       | \--       | 918        | \--        |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 4S2 | 422    | \--       | \--       | \--        | \--        |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 4SP | \--    | \--       | \--       | \--        | \--        |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 5S1 | 6925   | 4653      | \--       | 4876       | 3607       |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 5S2 | 8485   | 8321      | \--       | 5291       | 3395       |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 5S3 | 649    | \--       | \--       | 499        | \--        |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 5SP | 1394   | 650       | \--       | 1397       | 1050       |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 6S1 | 2116   | 622       | 701       | 17393      | 18028      |
+---------+--------+-----------+-----------+------------+------------+
| ##      | 9203   | 13103     | \--       | 8428       | 1214       |
| 7GI 6S2 |        |           |           |            |            |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 6S3 | 959    | \--       | \--       | 916        | \--        |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 7S1 | 3581   | 891       | \--       | 5269       | 1238       |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 7S2 | \--    | \--       | \--       | 429        | \--        |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 7S3 | \--    | \--       | \--       | \--        | \--        |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 8S1 | 6116   | \--       | \--       | 7591       | 1863       |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 8S2 | \--    | \--       | \--       | \--        | \--        |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 8S3 | 23501  | 5600      | \--       | 19215      | 4213       |
+---------+--------+-----------+-----------+------------+------------+
| 7GI     | \--    | \--       | \--       | \--        | \--        |
| 8S3B    |        |           |           |            |            |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 9S1 | 7793   | 2332      | \--       | 5686       | 3366       |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 9S2 | 33257  | 9317      | \--       | 14928      | 29957      |
+---------+--------+-----------+-----------+------------+------------+
| 7GI 9S3 | 39018  | 4741      | \--       | 21634      | 14875      |
+---------+--------+-----------+-----------+------------+------------+
| 7GI     | 4008   | 1135      | \--       | 4088       | 2816       |
| 10S1    |        |           |           |            |            |
+---------+--------+-----------+-----------+------------+------------+
| 7GI     | 8524   | 7295      | \--       | 6006       | 2776       |
| 10S2A   |        |           |           |            |            |
+---------+--------+-----------+-----------+------------+------------+
| 7GI     | 6419   | 5641      | \--       | 3906       | 2847       |
| 10S2B   |        |           |           |            |            |
+---------+--------+-----------+-----------+------------+------------+
| 7GI     | 11406  | 8721      | \--       | 7198       | 6843       |
| 10S3    |        |           |           |            |            |
+---------+--------+-----------+-----------+------------+------------+
| 7GI     | 7072   | \--       | \--       | 7953       | 5453       |
| 11S1    |        |           |           |            |            |
+---------+--------+-----------+-----------+------------+------------+
| 7GI     | 9212   | 8360      | \--       | 7323       | 4550       |
| 11S2    |        |           |           |            |            |
+---------+--------+-----------+-----------+------------+------------+
| 7GI     | 1765   | 1403      | \--       | 1036       | 902        |
| 11S3    |        |           |           |            |            |
+---------+--------+-----------+-----------+------------+------------+
| 7GI     | 602    | \--       | \--       | 434        | \--        |
| 11SP    |        |           |           |            |            |
+---------+--------+-----------+-----------+------------+------------+
| 7GI     | \--    | \--       | \--       | \--        | \--        |
| 13SP    |        |           |           |            |            |
+---------+--------+-----------+-----------+------------+------------+

**Table 5.** Results of analyses for semivolatile organic compounds in
sediments, Grassy Island -- Continued

+-------------+-----------+--------------+-------------+-------------+
| Field ID    | Benzo(a)  | Inde         | Dibenz(a,h) | B           |
|             | pyrene    | no(1,2,3-cd) | anthracene  | enzo(g,h,i) |
|             |           | pyrene       |             | perylene    |
|             | \(330\)   |              | \(330\)     |             |
|             |           | \(330\)      |             | \(330\)     |
+-------------+-----------+--------------+-------------+-------------+
| ## 7GI 2SP  | 1076      | \--          | \--         | \--         |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 4S1     | 873       | 515          | \--         | 542         |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 4S2     | \--       | \--          | \--         | \--         |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 4SP     | \--       | \--          | \--         | \--         |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 5S1     | 5444      | 8138         | 1786        | 10337       |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 5S2     | 6090      | 6587         | \--         | 8072        |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 5S3     | \--       | \--          | \--         | \--         |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 5SP     | 1010      | \--          | \--         | \--         |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 6S1     | 29157     | 171774       | 35304       | 47475       |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 6S2     | 8661      | 11316        | 2000        | 14129       |
+-------------+-----------+--------------+-------------+-------------+
| ## 7GI 6S3  | 895       | 534          | \--         | 690         |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 7S1     | 4965      | 7069         | 1668        | 9253        |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 7S2     | \--       | \--          | \--         | \--         |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 7S3     | \--       | \--          | \--         | \--         |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 8S1     | 5992      | 5261         | 1644        | 6700        |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 8S2     | \--       | \--          | \--         | \--         |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 8S3     | 18023     | 22360        | 6423        | 25832       |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 8S3B    | \--       | \--          | \--         | \--         |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 9S1     | 5524      | 6459         | 532         | 8558        |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 9S2     | 14714     | 13526        | 3250        | 16300       |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 9S3     | 26649     | 24052        | 5707        | 28040       |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 10S1    | 4587      | 5920         | 1173        | 7401        |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 10S2A   | 5650      | 6527         | 1670        | 7983        |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 10S2B   | 4371      | 4790         | 1127        | 5633        |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 10S3    | 9967      | 9665         | 2710        | 11671       |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 11S1    | 6070      | 8229         | 1763        | 10324       |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 11S2    | 7988      | 7794         | \--         | 10501       |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 11S3    | 1211      | 1078         | \--         | 1319        |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 11SP    | 509       | \--          | \--         | \--         |
+-------------+-----------+--------------+-------------+-------------+
| 7GI 13SP    | \--       | \--          | \--         | \--         |
+-------------+-----------+--------------+-------------+-------------+

**Table 6.** Results of analyses for volatile organic compounds in
sediments, Grassy Island. Detection limits are given in parentheses
below name of analyte. Sediment sample detection limits and results in
μg/kg (micrograms per kilogram, or ppb, dry weight of sample); \--, not
detected. Results are given only for those analytes that were detected
in one or more samples

+---------+------+------+--------+-------+--------+-------+----------+
| Field   | Lab  | Sa   | Met    | Ac    | Carbon | Be    | 4-Me     |
| ID      | ID   | mple | hylene | etone | Dis    | nzene | thyl-2-P |
|         |      | D    | Ch     |       | ulfide |       | entanone |
|         |      | epth | loride | \     |        | \     |          |
|         |      | (me  |        | (10\) | \(10\) | (10\) | \(10\)   |
|         |      | ters | \(10\) |       |        |       |          |
|         |      | b    |        |       |        |       |          |
|         |      | elow |        |       |        |       |          |
|         |      | surf |        |       |        |       |          |
|         |      | ace) |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 2SP | F1   | 5.18 | 78     | \--   | \--    | \--   | \--      |
|         | 7382 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 4S1 | F1   | 0.91 | 93     | \--   | \--    | \--   | \--      |
|         | 7371 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 4S2 | F1   | 2.74 | 68     | \--   | \--    | \--   | \--      |
|         | 7372 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 4SP | F1   | 3.66 | 84     | \--   | \--    | \--   | \--      |
|         | 7373 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 5S1 | F1   | .30  | \--    | \--   | \--    | \--   | \--      |
|         | 7384 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| ##      | F1   | 3.05 | \--    | \--   | \--    | \--   | 104      |
| 7GI 5S2 | 7385 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 5S3 | F1   | 4.57 | \--    | \--   | \--    | \--   | \--      |
|         | 7386 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 5SP | F1   | 6.10 | \--    | \--   | \--    | \--   | \--      |
|         | 7387 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 6S1 | F1   | .30  | 107    | \--   | \--    | \--   | \--      |
|         | 7368 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 6S2 | F1   | 2.44 | 134    | 80    | \--    | 33    | \--      |
|         | 7369 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 6S3 | F1   | 6.10 | 102    | 139   | 24     |       | \--      |
|         | 7370 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 7S1 | F1   | 1.22 | 129    | \--   | \--    | \--   | \--      |
|         | 7374 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 7S2 | F1   | 3.35 | 124    | 193   | \--    | \--   | \--      |
|         | 7375 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 7S3 | F1   | 6.10 | 72     | 111   | \--    | \--   | \--      |
|         | 7376 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 8S1 | F1   | .91  | 94     | \--   | \--    | \--   | \--      |
|         | 7377 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 8S2 | F1   | 3.66 | 86     | 132   | \--    | \--   | \--      |
|         | 7378 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 8S3 | F1   | 5.49 | 80     | \--   | \--    | \--   | \--      |
|         | 7379 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI     |      | 5.49 | 64     | \--   | \--    | \--   | \--      |
| 8S3B    |      |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 9S1 | F1   | .30  | \--    | \--   | \--    | \--   | \--      |
|         | 7397 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 9S2 | F1   | 2.44 | \--    | \--   | \--    | \--   | 145      |
|         | 7398 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI 9S3 | F1   | 3.96 | \--    | \--   | \--    | 34    | 322      |
|         | 7399 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI     | F1   | .91  | \--    | \--   | \--    | \--   | 174      |
| 10S1    | 7388 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI     | F1   | 1.52 | 90     | \--   | \--    | \--   | 10438    |
| 10S2A   | 7389 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI     |      | 1.52 | \--    | \--   | \--    | \--   | 1173     |
| 10S2B   |      |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI     | F1   | 4.27 | \--    | 564   | \--    | \--   | 9954     |
| 10S3    | 7391 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI     | F1   | .15  | 92     | \--   | \--    | \--   | 14047    |
| 11S1    | 7392 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI     | F1   | 2.44 | 83     | 231   | \--    | \--   | 168      |
| 11S2    | 7393 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI     | F1   | 4.57 | 64     | 167   | \--    | \--   | \--      |
| 11S3    | 7394 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI     | F1   | 5.49 | \--    | 92    | \--    | \--   | 31       |
| 11SP    | 7395 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+
| 7GI     | F1   | 3.66 | 124    | \--   | \--    | \--   | \--      |
| 13SP    | 7383 |      |        |       |        |       |          |
+---------+------+------+--------+-------+--------+-------+----------+

**Table 6.** Results of analyses for volatile organic compounds in
sediments,\
Grassy Island -- Continued

+--------------+---------------+-----------+----------------+----------+
| Field ID     | 2-Hexanone    | Toluene   | Ethylbenzene   | Xylene   |
|              |               |           |                | (total)  |
|              | \(10\)        | \(10\)    | \(10\)         |          |
|              |               |           |                | \(10\)   |
+--------------+---------------+-----------+----------------+----------+
| 7GI 2SP      | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 4S1      | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 4S2      | 16            | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 4SP      | 62            | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 5S1      | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 5S2      | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 5S3      | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 5SP      | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 6S1      | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 6S2      | \--           | \--       | \--            | 81       |
+--------------+---------------+-----------+----------------+----------+
| ## 7GI 6S3   | \--           | \--       | 43             | 122      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 7S1      | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 7S2      | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 7S3      | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 8S1      | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 8S2      | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 8S3      | \--           | 19        | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 8S3B     | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 9S1      | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 9S2      | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 9S3      | \--           | \--       | 93             | 400      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 10S1     | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 10S2A    | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 10S2B    | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 10S3     | \--           | \--       | \--            | 93       |
+--------------+---------------+-----------+----------------+----------+
| 7GI 11S1     | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 11S2     | \--           | \--       | \--            | 68       |
+--------------+---------------+-----------+----------------+----------+
| 7GI 11S3     | \--           | \--       | \--            | 36       |
+--------------+---------------+-----------+----------------+----------+
| 7GI 11SP     | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+
| 7GI 13SP     | \--           | \--       | \--            | \--      |
+--------------+---------------+-----------+----------------+----------+

**Table 7.** Results of analyses for pesticides and aroclors (PCBs) in
sediments, Grassy Island. Detection limits are given in parentheses
below name of analyte. Sediment sample detection limits and results in
μg/kg (micrograms per kilogram, or ppb, dry weight of sample); \--, not
detected. Results are given only for those analytes that were detected
in one or more samples

+----------+-------+-------+------+------+-----+-----------+--------+
| Field ID | Lab   | S     | a    | beta | del | gamma-BHC | Aldrin |
|          | ID    | ample | lpha | -BHC | ta- | (Lindane) |        |
|          |       | Depth | -BHC |      | BHC |           | (1.7)  |
|          |       | (m    |      | (    |     | (1.7)     |        |
|          |       | eters | (    | 1.7) | (1  |           |        |
|          |       | below | 1.7) |      | .7) |           |        |
|          |       | sur   |      |      |     |           |        |
|          |       | face) |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 2SP  | F     | 5.18  | \--  | \--  | \-- | \--       | \--    |
|          | 17382 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 4S1  | F     | 0.91  | \--  | \--  | \-- | \--       | \--    |
|          | 17371 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 4S2  | F     | 2.74  | \--  | \--  | \-- | \--       | \--    |
|          | 17372 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 4SP  | F     | 3.66  | \--  | \--  | \-- | \--       | \--    |
|          | 17373 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 5S1  | F     | .30   | \--  | \--  | \-- | \--       | \--    |
|          | 17384 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| ##       | F     | 3.05  | \--  | \--  | \-- | \--       | \--    |
|  7GI 5S2 | 17385 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 5S3  | F     | 4.57  | \--  | \--  | \-- | \--       | \--    |
|          | 17386 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 5SP  | F     | 6.10  | \--  | \--  | \-- | \--       | \--    |
|          | 17387 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 6S1  | F     | .30   | \--  | \--  | \-- | \--       | \--    |
|          | 17368 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 6S2  | F     | 2.44  | \--  | \--  | 6.6 | \--       | \--    |
|          | 17369 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 6S3  | F     | 6.10  | \--  | \--  | \-- | \--       | \--    |
|          | 17370 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 7S1  | F     | 1.22  | \--  | \--  | \-- | \--       | \--    |
|          | 17374 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 7S2  | F     | 3.35  | \--  | \--  | \-- | \--       | \--    |
|          | 17375 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 7S3  | F     | 6.10  | \--  | \--  | \-- | \--       | \--    |
|          | 17376 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 8S1  | F     | .91   | \--  | \--  | \-- | \--       | \--    |
|          | 17377 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 8S2  | F     | 3.66  | \--  | \--  | \-- | \--       | \--    |
|          | 17378 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 8S3  | F     | 5.49  | \--  | \--  | \-- | \--       | \--    |
|          | 17379 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 8S3B |       | 5.49  | \--  | \--  | \-- | \--       | \--    |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 9S1  | F     | .30   | \--  | \--  | \-- | \--       | \--    |
|          | 17397 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 9S2  | F     | 2.44  | \--  | \--  | \-- | \--       | \--    |
|          | 17398 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 9S3  | F     | 3.96  | \--  | \--  | \-- | \--       | \--    |
|          | 17399 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 10S1 | F     | .91   | \--  | \--  | \-- | \--       | \--    |
|          | 17388 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI      | F     | 1.52  | \--  | \--  | \-- | \--       | \--    |
| 10S2A    | 17389 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI      | F     | 1.52  | \--  | \--  | \-- | \--       | 32.3   |
| 10S2B    | 17390 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 10S3 | F     | 4.27  | \--  | \--  | 1   | 4.0       | 71.1   |
|          | 17391 |       |      |      | 2.8 |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 11S1 | F     | .15   | \--  | \--  | \-- | \--       | 10.6   |
|          | 17392 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 11S2 | F     | 2.44  | 4.8  | 18.6 | 1   | 6.1       | 55.3   |
|          | 17393 |       |      |      | 3.1 |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 11S3 | F     | 4.57  | \--  | \--  | \-- | \--       | \--    |
|          | 17394 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 11SP | F     | 5.49  | \--  | \--  | \-- | \--       | \--    |
|          | 17395 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+
| 7GI 13SP | F     | 3.66  | \--  | \--  | \-- | \--       | \--    |
|          | 17383 |       |      |      |     |           |        |
+----------+-------+-------+------+------+-----+-----------+--------+

**Table 7.** Results of analyses for pesticides and aroclors (PCBs) in
sediments, Grassy Island -- Continued

+----------+---------+---------+-----+------+---------+------+------+
| Field ID | Endo    | D       | 4,4 | En   | Endo    | 4    | End  |
|          | -sulfan | ieldrin | \'- | drin | -sulfan | ,4\' | o-su |
|          | I       |         | DDE |      | II      | -DDD | lfan |
|          |         | (3.3)   |     | (    |         |      | sul  |
|          | (1.7)   |         | (3  | 3.3) | (3.3)   | (    | fate |
|          |         |         | .3) |      |         | 3.3) |      |
|          |         |         |     |      |         |      | (    |
|          |         |         |     |      |         |      | 3.3) |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 2SP  | \--     | \--     | \-- | \--  | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 4S1  | \--     | \--     | \-- | \--  | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 4S2  | \--     | \--     | \-- | \--  | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 4SP  | \--     | \--     | \-- | \--  | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 5S1  | \--     | \--     | 1   | 14.8 | \--     | 13.1 | \--  |
|          |         |         | 3.4 |      |         |      |      |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 5S2  | \--     | \--     | 10  | \--  | \--     | \--  | 22.2 |
|          |         |         | 0.9 |      |         |      |      |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 5S3  | \--     | \--     | \-- | \--  | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 5SP  | \--     | \--     | \-- | \--  | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 6S1  | \--     | \--     | \-- | \--  | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| ##       | \--     | \--     | 4   | \--  | \--     | \--  | \--  |
|  7GI 6S2 |         |         | 0.3 |      |         |      |      |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 6S3  | \--     | \--     | \-- | \--  | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 7S1  | \--     | \--     | \-- | 15.9 | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 7S2  | \--     | \--     | \-- | \--  | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 7S3  | 10.9    | \--     | 6   | \--  | 14.3    | \--  | \--  |
|          |         |         | 9.0 |      |         |      |      |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 8S1  | \--     | \--     | \-- | \--  | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 8S2  | \--     | \--     | 1   | \--  | \--     | 39.3 | \--  |
|          |         |         | 2.4 |      |         |      |      |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 8S3  | 4.2     | \--     | \-- | \--  | \--     | 64.5 | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 8S3B | \--     | \--     | \-- | \--  | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 9S1  | \--     | \--     | \-- | \--  | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 9S2  | \--     | \--     | \-- | \--  | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 9S3  | \--     | \--     | 5   | \--  |         | \--  | \--  |
|          |         |         | 6.4 |      |         |      |      |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 10S1 | \--     | \--     | \-- | \--  | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI      | \--     | 12.9    | \-- | \--  | \--     | \--  | \--  |
| 10S2A    |         |         |     |      |         |      |      |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI      | \--     | \--     | 3   | \--  |         | 65.9 | \--  |
| 10S2B    |         |         | 8.7 |      |         |      |      |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 10S3 | 13.4    | 21.5    | 4   | \--  | 441.0   | 11.4 | 16.7 |
|          |         |         | 6.8 |      |         |      |      |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 11S1 | \--     | \--     | \-- | \--  | \--     | 14.0 | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 11S2 | 20.2    | 22.9    | 18  | 81.8 | \--     | 4    | 26.5 |
|          |         |         | 9.7 |      |         | 54.7 |      |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 11S3 | \--     | \--     | \-- | \--  | \--     | 31.9 | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 11SP | \--     | \--     | \-- | \--  | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+
| 7GI 13SP | \--     | \--     | \-- | \--  | \--     | \--  | \--  |
+----------+---------+---------+-----+------+---------+------+------+

**Table 7.** Results of analyses for pesticides and aroclors (PCBs) in
sediments, Grassy Island -- Continued

+---------+---------+------+--------+------+--------+-------+-------+
| Field   | Methox  | En   | Endrin | alph | Gamm   | Toxa- | Ar    |
| ID      | y-chlor | drin | al     | a-Ch | a-Chlo | phene | oclor |
|         |         | ke   | dehyde | lor- | r-dane |       | 1016  |
|         | (17.0)  | tone |        | dane |        | (1    |       |
|         |         |      | (3.3)  |      | (1.7)  | 70.0) | (     |
|         |         | (    |        | (    |        |       | 33.0) |
|         |         | 3.3) |        | 1.7) |        |       |       |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 2SP | \--     | \--  | \--    | \--  | \--    | \--   | \--   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 4S1 | \--     | \--  | \--    | \--  | \--    | \--   | \--   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 4S2 | \--     | \--  | \--    | \--  | \--    | \--   | \--   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 4SP | \--     | \--  | \--    | \--  | \--    | \--   | \--   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 5S1 | \--     | \--  | \--    | 15.2 | \--    | \--   | \--   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 5S2 | \--     | \--  | \--    | \--  | \--    | \--   | 364   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 5S3 | \--     | \--  | \--    | \--  | \--    | \--   | \--   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 5SP | \--     | \--  | \--    | \--  | \--    | \--   | \--   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 6S1 | \--     | \--  | \--    | \--  | \--    | \--   | \--   |
+---------+---------+------+--------+------+--------+-------+-------+
| ##      | \--     | \--  | \--    | \--  | \--    | \--   | 180   |
| 7GI 6S2 |         |      |        |      |        |       |       |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 6S3 | \--     | \--  | \--    | \--  | \--    | \--   | \--   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 7S1 | \--     | \--  | \--    | 20.1 | \--    | \--   | \--   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 7S2 | \--     | \--  | \--    | \--  | \--    | \--   | \--   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 7S3 | \--     | \--  | \--    | \--  | \--    | \--   | 1242  |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 8S1 | \--     | \--  | \--    | \--  | \--    | \--   | \--   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 8S2 | \--     | \--  | \--    | 11.4 | \--    | \--   | 750   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 8S3 | \--     | \--  | \--    | 13.5 | \--    | \--   | \--   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI     | \--     | \--  | \--    | \--  | \--    | \--   | \--   |
| 8S3B    |         |      |        |      |        |       |       |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 9S1 | \--     | \--  | \--    | \--  | \--    | \--   | \--   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 9S2 | \--     | \--  | \--    | \--  | 23.8   | \--   | \--   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI 9S3 | \--     | 9.9  | \--    | \--  | 24.7   | \--   | \--   |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI     | \--     | \--  | \--    | 12.5 | 15.2   | \--   | \--   |
| 10S1    |         |      |        |      |        |       |       |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI     | \--     | \--  | \--    | \--  | \--    | \--   | 1207  |
| 10S2A   |         |      |        |      |        |       |       |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI     | \--     | \--  | 10.0   | 19.2 | 11.2   | \--   | 470   |
| 10S2B   |         |      |        |      |        |       |       |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI     | \--     | \--  | 29.8   | 33.6 | 39.4   | \--   | 1039  |
| 10S3    |         |      |        |      |        |       |       |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI     | \--     | \--  | \--    | \--  | 6.2    | \--   | \--   |
| 11S1    |         |      |        |      |        |       |       |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI     | 26.9    | 44.6 | \--    | 59.0 | 47.6   | \--   | \--   |
| 11S2    |         |      |        |      |        |       |       |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI     | \--     | \--  | \--    | \--  | \--    | \--   | \--   |
| 11S3    |         |      |        |      |        |       |       |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI     | \--     | \--  | \--    | \--  | \--    | \--   | \--   |
| 11SP    |         |      |        |      |        |       |       |
+---------+---------+------+--------+------+--------+-------+-------+
| 7GI     | \--     | \--  | \--    | \--  | \--    | \--   | \--   |
| 13SP    |         |      |        |      |        |       |       |
+---------+---------+------+--------+------+--------+-------+-------+

**Table 7.** Results of analyses for pesticides and aroclors (PCBs) in
sediments, Grassy Island -- Continued

+---------+-------+-------+-------+-------+-------+-------+-------+
| Field   | Ar    | Ar    | Ar    | Ar    | Ar    | Ar    | Sum   |
| ID      | oclor | oclor | oclor | oclor | oclor | oclor | of    |
|         | 1221  | 1232  | 1242  | 1248  | 1254  | 1260  | Aro   |
|         |       |       |       |       |       |       | clors |
|         | (     | (     | (     | (     | (     | (     |       |
|         | 67.0) | 33.0) | 33.0) | 33.0) | 33.0) | 33.0) |       |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 2SP | \--   | \--   | \--   | \--   | \--   | \--   | \--   |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 4S1 | \--   | \--   | \--   | \--   | \--   | \--   | \--   |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 4S2 | \--   | \--   | \--   | \--   | \--   | \--   | \--   |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 4SP | \--   | \--   | \--   | \--   | \--   | \--   | \--   |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 5S1 | \--   | \--   | \--   | \--   | 283   | \--   | 283   |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 5S2 | 937   | \--   | 2976  | \--   | 1350  | \--   | 5627  |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 5S3 | \--   | \--   | \--   | \--   | \--   | \--   | \--   |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 5SP | \--   | \--   | \--   | \--   | \--   | \--   | \--   |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 6S1 | \--   | \--   | \--   | \--   | \--   | \--   | \--   |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 6S2 | \--   | \--   | \--   | \--   | \--   | \--   | 180   |
+---------+-------+-------+-------+-------+-------+-------+-------+
| ##      | \--   | \--   | \--   | \--   | \--   | \--   | \--   |
| 7GI 6S3 |       |       |       |       |       |       |       |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 7S1 | \--   | \--   | \--   | \--   | \--   | \--   | \--   |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 7S2 | \--   | \--   | \--   | \--   | \--   | \--   | \--   |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 7S3 | 3017  | \--   | \--   | \--   | \--   | \--   | 4259  |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 8S1 | \--   | \--   | \--   | \--   | \--   | \--   | \--   |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 8S2 | 1811  | \--   | \--   | \--   | \--   | 95    | 2656  |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 8S3 | 2082  | \--   | \--   | \--   | \--   | 152   | 2234  |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI     | \--   | \--   | \--   | \--   | \--   | \--   | \--   |
| 8S3B    |       |       |       |       |       |       |       |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 9S1 | \--   | \--   | \--   | \--   | 347   | 127   | 474   |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 9S2 | \--   | 86    | 2709  | \--   | \--   | \--   | 2795  |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI 9S3 | \--   | \--   | \--   | 2015  | \--   | 134   | 2149  |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI     | \--   | \--   | \--   | \--   | \--   | \--   | \--   |
| 10S1    |       |       |       |       |       |       |       |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI     | 1260  | \--   | 2122  | 1116  | 832   | \--   | 6537  |
| 10S2A   |       |       |       |       |       |       |       |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI     | 838   | 160   | 3042  | 814   | 724   | 218   | 6266  |
| 10S2B   |       |       |       |       |       |       |       |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI     | 2301  | 463   | 9404  | 2006  | 2954  | 783   | 18950 |
| 10S3    |       |       |       |       |       |       |       |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI     | 166   | 369   | \--   | 2015  | 248   | 249   | 3047  |
| 11S1    |       |       |       |       |       |       |       |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI     | 628   | 1483  | 318   | 5599  | 800   | 2456  | 11284 |
| 11S2    |       |       |       |       |       |       |       |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI     | 141   | \--   | \--   | 470   | \--   | \--   | 611   |
| 11S3    |       |       |       |       |       |       |       |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI     | \--   | \--   | \--   | \--   | \--   | \--   | \--   |
| 11SP    |       |       |       |       |       |       |       |
+---------+-------+-------+-------+-------+-------+-------+-------+
| 7GI     | \--   | \--   | \--   | \--   | \--   | \--   | \--   |
| 13SP    |       |       |       |       |       |       |       |
+---------+-------+-------+-------+-------+-------+-------+-------+

**Table 8.** Results of analyses for metals in water, Grassy Island.
Detection limits are given in parentheses below name of analyte. Trace
metal detection limits and results, in μg/L (micrograms per liter or
ppb) are expressed as instrument detection limits obtained for pure
water; \--, not detected. Results are given only for those analytes that
were detected in one or more samples

+--------+-----+--------+-----+-----+-------+-------+--------+-----+
| Field  | Lab | Al     | A   | Bar | Ca    | Ca    | Ch     | Cop |
| ID     | ID  | uminum | rse | ium | dmium | lcium | romium | per |
|        |     |        | nic |     |       |       |        |     |
|        |     | \      |     | \   | \(5\) | \(5   | \(10\) | \(2 |
|        |     | (200\) | \(1 | (20 |       | 000\) |        | 5\) |
|        |     |        | 0\) | 0\) |       |       |        |     |
+--------+-----+--------+-----+-----+-------+-------+--------+-----+
| 7GI 4W | F17 | 2509.7 | \-- | \-- | \--   | 517   | 12.6   | \-- |
|        | 381 |        |     |     |       | 590.1 |        |     |
+--------+-----+--------+-----+-----+-------+-------+--------+-----+
| 7GI 5W | F17 | 3923.5 | \-- | \-- | \--   | 94    | 51.2   | 5   |
|        | 396 |        |     |     |       | 824.4 |        | 8.4 |
+--------+-----+--------+-----+-----+-------+-------+--------+-----+
| 7GI 6W | F17 | \--    | \-- | \-- | \--   | 444   | \--    | 8   |
|        | 380 |        |     |     |       | 140.6 |        | 4.7 |
+--------+-----+--------+-----+-----+-------+-------+--------+-----+
| 7GI    | F17 | 1528.8 | 2   | 29  | 6.1   | 400   | 29.2   | 4   |
| 11WA   | 400 |        | 6.3 | 4.4 |       | 715.7 |        | 6.5 |
+--------+-----+--------+-----+-----+-------+-------+--------+-----+
| 7GI    | F17 | 1547.9 | 3   | 28  | \--   | 397   | 29.7   | 2   |
| 11WB   | 401 |        | 1.8 | 3.8 |       | 028.9 |        | 7.2 |
+--------+-----+--------+-----+-----+-------+-------+--------+-----+
| 7GI    | F17 | 222.9  | \-- | \-- | 5.0   | 37    | \--    | \-- |
| 13Wp   | 417 |        |     |     |       | 283.0 |        |     |
+--------+-----+--------+-----+-----+-------+-------+--------+-----+
| 7GI    | F17 | \--    | \-- | \-- | \--   | 30    | \--    | \-- |
| 13Wr   | 418 |        |     |     |       | 192.2 |        |     |
+--------+-----+--------+-----+-----+-------+-------+--------+-----+

+---------+-------+----+---------+---------+-------+------+--------+
| ### F   | Iron  | Le | Ma      | Ma      | Me    | Ni   | Pot    |
| ield ID |       | ad | gnesium | nganese | rcury | ckel | assium |
|         | \(    |    |         |         |       |      |        |
|         | 100\) | \  | \       | \(15\)  | (0.2) | \(   | \(     |
|         |       | (3 | (5000\) |         |       | 40\) | 5000\) |
|         |       | \) |         |         |       |      |        |
+---------+-------+----+---------+---------+-------+------+--------+
| 7GI 4W  | 62    | 17 | 231343  | 3935.2  | \--   | 46.4 | 6141.1 |
|         | 153.9 | .7 |         |         |       |      |        |
+---------+-------+----+---------+---------+-------+------+--------+
| 7GI 5W  | 9     | 52 | 1       | 220.2   | 0.    | \--  | 1      |
|         | 817.9 | .8 | 34297.2 |         | 23634 |      | 1671.7 |
+---------+-------+----+---------+---------+-------+------+--------+
| 7GI 6W  | 443.6 | \  | 1       | 2696.9  | \--   | 40.7 | 1      |
|         |       | -- | 15505.2 |         |       |      | 2646.5 |
+---------+-------+----+---------+---------+-------+------+--------+
| 7GI     | 38    | 65 | 1       | 430.8   | \--   | \--  | 2      |
| 11WA    | 335.3 | .4 | 73213.8 |         |       |      | 6271.1 |
+---------+-------+----+---------+---------+-------+------+--------+
| 7GI     | 37    | 61 | 1       | 414.7   | \--   | \--  | 2      |
| 11WB    | 005.2 | .6 | 65786.3 |         |       |      | 7357.5 |
+---------+-------+----+---------+---------+-------+------+--------+
| 7GI     | 5     | \  | 12081.5 | 49.3    | \--   | \--  | \--    |
| 13Wp    | 84.72 | -- |         |         |       |      |        |
+---------+-------+----+---------+---------+-------+------+--------+
| 7GI     | 209.3 | \  | 8434.0  | \--     | \--   | \--  | \--    |
| 13Wr    |       | -- |         |         |       |      |        |
+---------+-------+----+---------+---------+-------+------+--------+

+--------------------------+----------------------+--------------------+
| Field ID                 | Sodium               | Zinc               |
|                          |                      |                    |
|                          | \(5000\)             | \(20\)             |
+--------------------------+----------------------+--------------------+
| 7GI 4W                   | 112274.4             | 99.4               |
+--------------------------+----------------------+--------------------+
| 7GI 5W                   | 73252.2              | 15388.3            |
+--------------------------+----------------------+--------------------+
| 7GI 6W                   | 28309.8              | 451.7              |
+--------------------------+----------------------+--------------------+
| 7GI 11WA                 | 163764.4             | 146.0              |
+--------------------------+----------------------+--------------------+
| 7GI 11WB                 | 166487.0             | 126.0              |
+--------------------------+----------------------+--------------------+
| 7GI 13Wp                 | 7178.6               | 27.9               |
+--------------------------+----------------------+--------------------+
| 7GI 13Wr                 | 5623.0               | 24.3               |
+--------------------------+----------------------+--------------------+

**Table 9.** Results of analyses for semivolatile organic compounds in
water, Grassy Island. Detection limits are given in parentheses below
name of analyte. Detection limits and results in μg/L (micrograms per
liter or ppb); \--, not detected. Results are given only for those
analytes that were detected in one or more samples

+---------+-----+-----+---------+--------+------+---------+--------+
| Field   | Lab | Phe | 2-Meth  | A      | P    | bis(2-E | Di     |
| ID      | ID  | nol | yl-naph | cenaph | hena | thyl-he | -n-oct |
|         |     |     | thalene | -thene | n-th | xyl)-ph | yl-pht |
|         |     | \(1 |         |        | rene | thalate | halate |
|         |     | 0\) | \(10\)  | \(10\) |      |         |        |
|         |     |     |         |        | \(   | \(10\)  | \(10\) |
|         |     |     |         |        | 10\) |         |        |
+---------+-----+-----+---------+--------+------+---------+--------+
| 7GI 4W  | F17 | \-- | \--     | \--    | \--  | 10      | \--    |
|         | 381 |     |         |        |      |         |        |
+---------+-----+-----+---------+--------+------+---------+--------+
| 7GI 5W  | F17 | \-- | \--     | \--    | 11   | 43      | \--    |
|         | 396 |     |         |        |      |         |        |
+---------+-----+-----+---------+--------+------+---------+--------+
| 7GI 6W  | F17 | \-- | \--     | \--    | \--  | \--     | \--    |
|         | 380 |     |         |        |      |         |        |
+---------+-----+-----+---------+--------+------+---------+--------+
| 7GI     | F17 | \-- | 12      | \--    | 10   | 192     | \--    |
| 11WA    | 400 |     |         |        |      |         |        |
+---------+-----+-----+---------+--------+------+---------+--------+
| 7GI     | F17 | \-- | 14      | 11     | 14   | 52      | \--    |
| 11WB    | 401 |     |         |        |      |         |        |
+---------+-----+-----+---------+--------+------+---------+--------+
| 7GI     | F17 | 26  | \--     | \--    | \--  | \--     | 26     |
| 13Wp    | 417 |     |         |        |      |         |        |
+---------+-----+-----+---------+--------+------+---------+--------+
| ## 7    | F17 | 25  | \--     | \--    | \--  | \--     | \--    |
| GI 13Wr | 418 |     |         |        |      |         |        |
+---------+-----+-----+---------+--------+------+---------+--------+

**Table 10**. Results of analyses for volatile organic compounds in
water, Grassy Island. Detection limits are given in parentheses below
name of analyte. Detection limits and results in μg/L (micrograms per
liter or ppb); \--, not detected; E, exceeds calibration limits; data
reported for diluted sample. Results are given only for those analytes
that were detected in one or more samples

+-------------+-------+-----------+--------+------------+--------+---+---+
| Field ID    | Lab   | Methylene | A      | 2-Butanone | 4-     |   |   |
|             | ID    | Chloride  | cetone |            | Methyl |   |   |
|             |       |           |        | \(10\)     | -2-Pen |   |   |
|             |       | \(10\)    | \(10\) |            | tanone |   |   |
|             |       |           |        |            |        |   |   |
|             |       |           |        |            | \(10\) |   |   |
+-------------+-------+-----------+--------+------------+--------+---+---+
| 7GI 4W      | F     | 50        | \--    | \--        | 38     |   |   |
|             | 17420 |           |        |            |        |   |   |
+-------------+-------+-----------+--------+------------+--------+---+---+
| 7GI 5W      | F     | 25        | \--    | \--        | \--    |   |   |
|             | 17396 |           |        |            |        |   |   |
+-------------+-------+-----------+--------+------------+--------+---+---+
| 7GI 6W      | F     | 27        | 29     | \--        | \--    |   |   |
|             | 17419 |           |        |            |        |   |   |
+-------------+-------+-----------+--------+------------+--------+---+---+
| 7GI 11WA    | F     | 25        | 48     | \--        | 838E   |   |   |
|             | 17400 |           |        |            |        |   |   |
+-------------+-------+-----------+--------+------------+--------+---+---+
| 7GI 11WB    | F     | 23        | 38     | \--        | 662    |   |   |
|             | 17401 |           |        |            |        |   |   |
+-------------+-------+-----------+--------+------------+--------+---+---+
| 7GI 13Wp    | F     | 26        | 639E   | 124        | 41     |   |   |
|             | 17417 |           |        |            |        |   |   |
+-------------+-------+-----------+--------+------------+--------+---+---+
| 7GI 13Wr    | F     | \--       | 20     | 10         |        |   | 3 |
|             | 17418 |           |        |            |        |   | 5 |
+-------------+-------+-----------+--------+------------+--------+---+---+

**Table 11.** Results of analyses for pesticides and aroclors (PCBs) in
water, Grassy Island. Detection limits are given in parentheses below
name of analyte. Detection limits and results in μg/L (micrograms per
liter or ppb); \--, not detected. Results are given only for those
analytes that were detected in one or more samples

+----------+------+--------+------+-------+--------+--------+------+
| Field ID | Lab  | M      | En   | E     | alp    | gam    | Aroc |
|          | ID   | ethoxy | drin | ndrin | ha-Chl | ma-Chl | lor- |
|          |      | -chlor | ke   | ald   | ordane | ordane | 1016 |
|          |      |        | tone | ehyde |        |        |      |
|          |      | (0.50) |      |       | (0.05) | (0.05) | (    |
|          |      |        | (0   | (     |        |        | 1.0) |
|          |      |        | .10) | 0.10) |        |        |      |
+----------+------+--------+------+-------+--------+--------+------+
| 7GI 4W   | F1   | \--    | \--  | \--   | \--    | \--    | 1.0  |
|          | 7381 |        |      |       |        |        |      |
+----------+------+--------+------+-------+--------+--------+------+
| 7GI 5W   | F1   | 0.5    | \--  | \--   | \--    | 0.05   | 1.1  |
|          | 7396 |        |      |       |        |        |      |
+----------+------+--------+------+-------+--------+--------+------+
| 7GI 6W   | F1   | \--    | 0.1  | 0.1   | \--    | 0.05   | \--  |
|          | 7380 |        |      |       |        |        |      |
+----------+------+--------+------+-------+--------+--------+------+
| 7GI 11WA | F1   | \--    | \--  | \--   | 0.05   | 0.05   | \--  |
|          | 7400 |        |      |       |        |        |      |
+----------+------+--------+------+-------+--------+--------+------+
| 7GI 11WB | F1   | \--    | \--  | \--   | \--    | 0.05   | \--  |
|          | 7401 |        |      |       |        |        |      |
+----------+------+--------+------+-------+--------+--------+------+
| 7GI 13Wp | F1   | \--    | \--  | \--   | \--    | \--    | 1.0  |
|          | 7417 |        |      |       |        |        |      |
+----------+------+--------+------+-------+--------+--------+------+
| 7GI 13Wr | F1   | \--    | \--  | \--   | \--    | \--    | \--  |
|          | 7418 |        |      |       |        |        |      |
+----------+------+--------+------+-------+--------+--------+------+

+-----------+--------+--------+--------+--------+--------+----------+
| Field ID  | Arocl  | Arocl  | Arocl  | Arocl  | Arocl  | Sum of   |
|           | or1232 | or1242 | or1248 | or1254 | or1260 | Aroclors |
|           |        |        |        |        |        |          |
|           | (1.0)  | (1.0)  | (1.0)  | (1.0)  | (1.0)  |          |
+-----------+--------+--------+--------+--------+--------+----------+
| 7GI 4W    | \--    | \--    | 1.0    | \--    | \--    | 2.0      |
+-----------+--------+--------+--------+--------+--------+----------+
| 7GI 5W    | 1.9    | 1.4    | 1.4    | \--    | 1.0    | 6.8      |
+-----------+--------+--------+--------+--------+--------+----------+
| 7GI 6W    | \--    | \--    | \--    | \--    | 1.0    | 1.0      |
+-----------+--------+--------+--------+--------+--------+----------+
| 7GI 11WA  | \--    | \--    | \--    | \--    | \--    | 0.0      |
+-----------+--------+--------+--------+--------+--------+----------+
| 7GI 11WB  | \--    | \--    | \--    | \--    | 1.0    | 1.0      |
+-----------+--------+--------+--------+--------+--------+----------+
| 7GI 13Wp  | 1.0    | 1.0    | 1.0    | 1.0    | \--    | 5.0      |
+-----------+--------+--------+--------+--------+--------+----------+
| 7GI 13Wr  | \--    | \--    | \--    | \--    | \--    | \--      |
+-----------+--------+--------+--------+--------+--------+----------+