2010-10-21_HYDROLOGY - M1977300

• Permit No: M1977300
• IBM Index Class Name: HYDROLOGY
• Doc Date: 10/21/2010
• Doc Name: September 8 and 9, 2010 Surface Water Monitoring Data
• From: Cotter
• To: CDPHE/WQCD
• Permit Index Doc Type: Hydrology Report
• Email Name: DB2
• Media Type: D
• Archive: No

wenwooUbvom Raises, ifd 8774724711 • til6alls, MT HIP-7354481 • Caspar, WY OW2354515
anbaldtr:.tr.?. 2110189 J - , I Gill ft WY ON49.7175 • Rapid CU SD eat-172.1225 • CoIMp Station, Tx eel- W2218
LABORATORY ANALYTICAL REPORT
Client: Cotter Corporation Report Date: 10/12/10
Project: Schwartzwaider Mine Collection Date: 09/09/10 09:00
Lab ID: C10090382-005 DateRecelved: 09/10/10
Client Sample ID: SW BPL (S25193) Matrix: Aqueous

Analyses
Result
Units
Qualifiers RL MCU
GCL Method
Analysis Date / By
MAJOR IONS
Alkalinity, Total as CaC03 197 mg/L 1 A2320 B 09/15/10 18:38 / ja
Bicarbonate as HCO3 240 mg/L 1 A2320 B 09/15/1018:38 / ja
Calcium 147 mg/L D 0.4 E200.7 09/22/10 16:38 / cp
Chloride 29 mg/L 3 E300.0 09/15/10 04:36 / Ijl
Fluoride 0.4 mg/L 0.1 A4500-F C 09/16/10 08:23 / ja
Magnesium 59.5 mg/L 0.1 E200.7 09/22/10 16:38 / cp
Nitrogen, Nitrate+Nitrite as N 0.4 mg/L 0.1 E353.2 09/17/10 10:53 / eli-b
Phosphate, Total 0.06 mg/L 0.01 Calculation 09/27/10 09:49 / sec
Phosphorus, Total as P 0.02 mg/L 0.01 E365.1 09/16/10 09:53 / eli-b
Potassium 5.7 mg/L 0.1 E200.7 09/22110 16:38 / cp
Sodium 45.0 mg/L D 0.6 E200.7 09/22110 16:381 cp
Sulfate 512 mg/L 5 E300.0 09/15/10 04:36 / Ijl
NON-METALS
Cyanide, Weak Acid Dissociable ND mg/L 0.005 D2036 09115/10 11:19 / eli-b
PHYSICAL PROPERTIES
Solids, Total Dissolved TDS @ 180 C 1040 mg/L 10 A2540 C 09/14/10 16:21 / Ir
Solids, Total Suspended TSS @ 105 C ND mg/L 4 A2540 D 09/13/10 10:16 / it
METALS - DISSOLVED
Aluminum ND mg/L 0.2 E200.7 09/22110 16:38 / cp
Antimony ND mg/L 0.001 E200.8 10/04/10 14,391 sml
Copper ND mg/L 0.005 E200.8 09/18/1011:44 / sml
Iron ND mg/L 0.03 E200.8 09/18/1011:44 / sml
Manganese 0.02 mg/L 0.01 E200.8 09/18110 11:44 / sml
Molybdenum 0.038 mg/L 0.005 E200.8 10104/10 14:39 / sml
Silver ND mg/L 0.001 E200.8 09/18/10 11:44 / sml
Thallium ND mg/L 0.001 E200.8 09/18/10 11:44 / sml
Uranium 0.491 mg/L 0.0002 E200.8 09/18110 11:44 / smi
Zinc 0.008 mg/L 0.005 E200.8 09/18110 11:44 / sml
METALS-TOTAL
Aluminum ND mg/L 0.2 E200.7 09/22/10 16:42 / cp
Antimony ND mg/l_ 0.001 E200.8 09/29/1013:41 / sml
Arsenic ND mg/L 0.1 E200.7 09/22/10 16:42 / cp
Boron ND mg/L 0.1 E200.7 09/22/1016:42 / cp
Chromium ND mg/L 0.1 E200.7 09/22/10 16:42 / cp
Copper ND mg/L 0.005 E200.8 09/17/10 20:15 / smi
Iron 0.07 mg/L 0.03 E200.8 09/17/10 20:15 / sml
Lead ND mg/I_ 0.005 E200.8 09/17110 20:15 / sml
Manganese 0.03 mg/L 0.01 E200.8 09/17/10 20:15 / sml
Mercury ND mg/L 0.0001 E245.1 09/14/10 12:46 / rdw
Report RL - Analyte reporting limit. MCL - Maximum contaminant level.
Definitions: QCL - Quality control limit. ND - Not detected at the reporting limit.
D - RL increased due to sample matrix.
Page 9 of 36