2023-12-21_PERMIT FILE - C1981044 ‎(7)‎

• Permit No: C1981044
• IBM Index Class Name: Permit File
• Doc Date: 12/21/2023
• Doc Name: Evaluation of Soil Conservation Service Range Data
• Section_Exhibit Name: Tables 01 through Table 42
• Media Type: D
• Archive: No

• •
Table 25
SUMMARY OF 41ATER QUALITY DATA - YAMPA RIVER (Y-1) DOWNSTREAM -Part 2
Parameter Mean Std. Dev. Max. Min. Units No. Period
Barium Total <200.000 0.000 200.000 <200.000 ug/L 11 6/81-12/83
Cadmium Total <5.000 0.000 5.000 <5.000 ug/L 16 6/81- 3/85
Chromium Total-Total <20.909 3.015 30.000 <20.000 ug/L 11 6/81-12/83
Lead Total <28.750 17.841 <70.000 <20.000 ug/L 16 6/81- 3/85
Mercury Total <0.843 0.239 <1.000 <0.500 ug/L 16 6/81- 3/85
Selenium Total <2.454 2.544 <10.000 <1.000 ug/L 11 6/81-12/83
Silver Total <20.000 0.000 <20.000 <20.000 ug/L 5 3/84- 3/85
SECONDARY
Copper Total <21.250 5.000 <40.000 <20.000 ug/L 16 6/81- 3/85
Zinc Total <17.000 18.315 80.000 <5.000 ug/L 16 6/81- 3/85
Iron Total 1554.444 1821.389 7110.000 100.000 ug/L 18 6/81- 9/85
Manganese Total <75.555 86.719 380.000 <20.000 ug/L 18 6/81- 9/85
TRACE METALS
Aluminum Total <490.090 484.674 1800.000 <200.000 ug/L 11 6/81-12/83
Boron Total 142.727 106.215 380.000 <20.000 ug/L 11 6/81-12/83
Molybdenum Total 209.090 53.935 300.000 <100.000 ug/L 11 6/81-12/83
Nickel Total <22.727 6.466 40.000 <20.000 ug/L 11 6/81-12/83
Thallium Total <2.000 0.000 <2.000 <2.000 ug/L 5 3/84- 3/85
NUTRIENTS
Nitrogen Ammium-Total <0.115 0.079 0.280 <0.020 mg/L' 11 6/81-12/83
Nitrogen N03+N02 <0.729 2.147 7.200 <0.020 mg/L 11 6/81-12/83
Phosphate Total-Total <0.120 0.127 0.210 <0.030 mg/L 2 9/81-12/81
Phosphate Ortho-Total <0.056 0.048 0.160 <0.020 mg/L 9 6/81-12/83
ORGANICS
Cyanide Total <0.002 0.000 <0.002 <0.002 mg/L 16 6/81- 3/85

U = MICRO
All parameters total unless otherwise indicated.