PERMFILE50304

• Permit No: M1999002
• IBM Index Class Name: Permit File
• Doc Date: 4/26/1999
• Doc Name: PRELIMINARY RESPONSE PLAN
• Section_Exhibit Name: APPENDIX A PRELIMINARY STORMWATER MANAGEMENT PLAN
• Media Type: D
• Archive: No

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1.0 SITE DESCRIPTION...
1
1.1 PICEANCE SITE .................................................................................................................. 1
1.2 PARACHUTE SITE .............................................................................................................. .1
1.3 RECEIVING WATERS ......................................................................................................... . 1
1.3.1 Piceance Site ............................................................................................................. . 1
1.3.2 Parachute Site .......................................................................................................... . l
1.4 LOCATION AND DESCRIPTION OF NON-STORMWATER COMPONENTS OF DISCHARGE. . 2
1.4.1 Piceance Site ............................................................................................................. . 2
1.4.2 Parachute Site .......................................................................................................... . Z
1.5 LOCATION AND DESCRIPTION OF POSSIBLE POLLUTION SOURCES ................................ . 3
1.5.1 Sediment ................................................................................................................... .3
1.5.2 Hazardous Chemicals ............................................................................................. .3
1.5.3 Other Pollutants ...................................................................................................... .4
2.0 BMPS FOR STORMWATER POLLUTION PREVENTION
4
2.1 EROS(ONANDSEDIMENTCONTROLS ............................................ ...................................5
2.1.1 Concentrated Flow Structures ............................................. ................................... 5
2.1.1.1 Unlined Channels .............................................................. ................................... 6
2.1.1.2 Vegetation Linings ............................................................. ................................... 7
2.1.1.3 Riprap .................................................................................. ...................................7
2.1.1.4 Check Dams ........................................................................ ................................... 7
2.1.1.5 Straw Bale Filters ............................................................... ................................... 8
2.1.1.6 Rock Check Dams .............................................................. ................................... 8
2.1.2 Surface Treatments and Slope Protection .......................... ................................... 9
2.1.2.1 Ripping, Disking, and Plowing ....................................... ...................................9
2.1.2.2 Contour Furrows ............................................................... ................................... 9
2.1.2.3 Land [mprinting .................................................................. ................................ 10
2.1.2.4 Erosion Control Fabrics and Blankets ............................. ................................. 10
2.1.2.5 Wattling ............................................................................... .................................10
2.1.2.6 Level Spreader .................................................................... .................................11
2.1.2.7 Terracing ............................................................................. .................................11
2.1.3 Water Treatment .................................................................... ................................ 11
2.1.3.1 Vegetative Filters ............................................................... .................................12
2.1.3.2 Silt Fences ............................................................................ ................................. 12
2.1.3.3 Sediment Traps ................................................................... ................................ 12
2.1.3.4 Sedimentation Basins ........................................................ .................................13
2.1.4 Biotechnical Stabilization Measures .................................... ................................14
2.2 MATERIALS HANDLING AND SPILL PREVENT[ON .......................... ................................ 14
2.3 OTHER CONTROLS .......................................................................... ................................. 1$
3.0 SAMPLING AND MONITORING .............................................................................16
3.1 GENERAL LIMITATIONS .................
3.2 MONITORING REQUIREMENTS......
CONTENTS •
....16
.... 17
Preliminary Response Plan A~
Yankee Gulch Sodium Minerals Project Q~
American Soda, L.L.P.