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Animas Watershed Plan
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Last modified
1/27/2010 11:11:04 AM
Creation date
6/17/2008 2:10:59 PM
Metadata
Fields
Template:
Watershed Protection
Document ID
0002
County
San Juan
La Plata
Stream Name
Animas River
Basin
San Juan/Dolores
Sub-Basin
Animas 14080104
Water Division
7
Title
Animas River Wateshed Plan, The
Prepared By
Animas River Stakeholders Group
Watershed Pro - Doc Type
Planning Report
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sites plus an additional six sites which were added because of their large size and <br />therefore potential for significant load contributions. Leachate conce~ons presented <br />in Appendix l0E of the UAA were converted to "potential loads". The annual load <br />contributed from waste rock site in Table 11.2 was estimated by multiplying the <br />concentration from the leach test of the waste rock times the surface area of the pile times <br />the average annual runoff from the basin expressed as depth (29 inches}_ The potential <br />load figures do not include any potemial reductions. <br />The 32 waste sites listed contribute 90•/a of the estimated load from all 158 sites. <br />Units are in pounds per year as opposed to pounds per day used for edits. Estimated <br />loading from mine waste is much smaller than from edits. Approximately eighty-five <br />percent of the mine-related annual metal load in the Upper Animas Basin is from edits, <br />and fifteen perceut is from mine waste. <br />As with edits, the appropriate site treatmem and corresponding load reductions are <br />based on professional judgement. Again, the estimated costs of remediation fall irto the <br />same four categories used for edits. The costs listed in Table 11.2 are the mid-point of <br />the ranges of each category applied to the particular site. <br />Sites with CPDES or reclamation permits are not included in the tables in this <br />chapter_ It is assumed that required best manageme~ practices and/or treatment at these <br />sites is already in place. <br />Break <br />Table 11.1 Metal loads from selected edits in the IIpper Animas Basin <br />Pods per day <br />High FMw Low Flaw <br />NI'me Phase 1 •/. Cost S AI Cd Ca Fe Mn 7n AI Cd Ca Fe Mn 7~ <br /> Removal 1000's <br />Cement Creek <br />Mogat 80% 1000 1 0.04 1.7 14 4 2 1 0.02 0.7 5 1 3 <br />Silver hedge 50% 300 25 0.09 0.6 222 33 15 4 0.03 0.0 56 11 3 <br />CnandMogni 09/0 60 15 0.15 5.3 33 10 27 1 0.01 02 0 0 1 <br />Mammoth 30°Yo 60 1 0.00 0.0 14 2 8 1 0.00 0.0 16 2 0 <br />Anglosaxan 30% 60 0 0.00 0.0 15 10 2 0 0.01 0.0 15 S i <br />Jce & Johns 30% 300 0 0.00 02 1 1 1 0 0.00 0.0 1 0 0 <br />Big Colorado 50% 300 1 0.00 0.0 3 3 0 1 0.00 0.0 6 0 0 <br />Porcupine 309~b 60 0 0.00 0.0 14 5 1 0 0.00 0.0 10 5 1 <br />Evelyn 50% 1000 1 0.00 0.0 2 0 0 2 0.00 0.0 3 0 0 <br />Lewis property 50% 60 0 0.01 0.4 2 0 1 0 0.01 0.4 2 0 1 <br />Total Cement Creek 44 019 8.3 320 68 57 10 0.07 1.3 113 25 12 <br />1Ml'meral Creek <br />Kohler 50°Yo 60 33 0.36 30.7 321 10 91 28 0.25 28.3 264 8 78 <br />Notch Star 50% 300 0 0.02 0.1 6 16 4 1 0.02 02 6 11 3 <br />Junction Mrne 50% 300 13 0.07 22 126 3 14 0 0.00 0.1 3 0 0 <br />Batrdata Mme 30% 60 0 0.04 0.1 5 4 10 0 0.02 0.0 2 2 4 <br />Upper Banns 50% 300 1 0.00 0.0 1 1 1 2 0.01 0.0 2 1 1 <br />Feaocaete Mme 50% 300 2 0.00 0.0 31 5 1 3 0.01 0.0 32 7 1 <br />Paradise o•~ 60 28 0.00 0.1 246 20 2 28 0.00 0.l 246 20 2 <br />Brooklyn Mme 30% 300 1 0.01 02 8 2 2 1 0.01 0.2 S 2 2 <br />Bonney Mme 50°x6 300 1 0.01 0.0 1 1 1 2 0.00 0.0 2 1 0 <br />Lower Bow 30% 300 1 0.00 0.0 1 0 0 2 0.00 0.0 2 1 1 <br />18 <br />
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