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WSP04503
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Last modified
1/26/2010 12:55:45 PM
Creation date
10/12/2006 12:23:59 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8142.600.20
Description
Trinidad Project - Environmental Studies
State
CO
Basin
Arkansas
Water Division
2
Date
3/1/1974
Author
Corps of Engineers
Title
Draft Environmental Statement - Trinidad Lake Project - Purgatoire River - Colorado
Water Supply Pro - Doc Type
Report/Study
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<br />0:,1491 <br /> <br />. <br /> <br />Water Quality Standards and Stream Classifications <br /> <br />State Stream Classifications - Purgatoire River <br /> <br />Source to diversion for Trinidad's <br />public water supply <br /> <br />A, Bl' 01 <br /> <br />Point of diversion to city of Trinidad <br />(project area in this reach) <br /> <br />Bl' C, 01 <br /> <br />City of Trinidad to Arkansas River <br /> <br />B2*' C, 01 <br /> <br />Class A - Potable water supply with treatment <br />Class Bl - Cold water fishery <br />Class B2 - Warm water fishery <br />Class C - Industrial uses <br />Class Dl - Irrigation <br /> <br />Permissible Criteria for Potable Water Supplies versus Pur~atoire River <br /> Standard Near Se~undo** Below Trinidad** * <br /> (data = mean) (data = mean) <br />Fecal coliforms <1,000/100 ml 395.866/100 mt 57558.8/100 ml <br />Dissolved oxygen ~4 mg/l 8.46428 mg/l 9.35786 mg/l <br />pH 6-9 su 8.46428 8.20555 <br />Dissolved solids (Total) <500 mg/l 295.800 mg/l 47.3636 mg/l <br />Arsenic <0.05 mg/1 0.00000 ug/1 0.00000 ug/1 <br />Barium <1.00 mg/l <br />Cadmium <0.01 mg/1 .000000 ug/l .200000 ug/l <br />Chromium ..( 0.05 mg/1 .000000 ug/l .000000 ug/l <br />cyanide ..(0.20mg/l .001111 mg/l .000000 mg/l <br />Lead <:0.05 mg/l .000000 ug/1 .000000 ug/l <br />Se lenium < 0.01 mg/l .000000 ug/1 4.20000 ug/1 <br />Silver <0.05 mg/l .000000 ug/l .000000 ug/l <br /> <br />* - Proposed change - April 1971 <br />** - Located about 9 miles above damsite. <br />*** - Water influenced by municipal and agricultural usage. <br /> <br />. <br /> <br />II-9 <br />
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