9343

• UCREFRP Catalog Number: 9343
• Author: Greve, A. I., N. E. Spahr, P. C. Van Metre and J. T. Wilson.
• Title: Identification of Water-Quality Trends Using Sediment Cores from Dillon Reservoir, Summit County, Colorado.
• USFW Year: 2001.
• USFW - Doc Type: Denver.
• Copyright Material: NO

Table A 1. Concentration of pesticides and polychlorinated biphenyls in seven bottom-sediment core samples from Dillon Reservoir, 1997

[<, less than; E, estimated value; DLN, Dillon Reservoir near the dam; DSU and DSL, upper and lower part of the Snake River arm; DBU and DBL, upper and lower part of Blue River arm;
DTU and
DTL, upper and lower part of Tenmile Creek arm. All concentrations are in micrograms per kilogram. The minimum laboratory reporting level is determined in part by the amount of material
available
for analysis; less material was analyzed from the core gathered near the dam (DLN)]

Core Depth
identifier (centimeters)
Minimum laboratory
reporting level
DLN 0-2
DLN 2-4
DLN 4-6
DLN 6-8
DLN 8-10
DLN 10-12
DLN 12-14
DLN 14-16
DLN 16-18
DLN 18-19

Heptachlor Chlordane
epoxide
10
<1 <10
<1 <10
<1 <10
<1 <10
<1 <10
<1 <10
<1 <10
<1 <10
<1 <10
<1 <10
0.5 5
<0.5 <5
<0.5 <5
<0.5 <5
<0.5 <5
<0.5 <5
<0.5 <5

Lindane

Heptachlor

Aldrin

Endosulfan

Dieldrin

Endrin

<1 <1 <1
<1 <1 <1
<1 <1 <1
<1 <1 <1
<1 <1 <1
<1 <1 <1
<1 <1 <1
<1 <1 <1
<1 <1 <1
<1 <1 <1
0.5 0.5 0.5
<0.5 <0.5 <0.5
<0.5 <0.5 <0.5
<0.5 <0.5 <0.5
<0.5 <0.5 <0.5
<0.5 <0.5 <0.5
<0.5 <0.5 <0.5

<1 <1 <1
<1 <1 <1
<1.1 <1 <1
<1 <1 <1
<1 <1 <1
<1 <1 <1
<1 <1 <1
<1 <1 <1
<1 <1 <1
<1 <1 <1
0.5 0.5 0.5
<0.5 <0.5 <0.5
<0.5 <0.5 <0.5
<0.5 <0.5 <0.5
<0.5 <0.5 <0.5
<0.5 <0.5 <0.5
<0.5 <0.5 <0.5

Minimum laboratory
reporting level
DSU 0-2
DSL 0-2
DBU 0-2
DBL 0-2
DTU 0-2
DTL 0-2

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