PERMFILE134290

• Permit No: C1981038
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: VOLUME 4-SURFACE WATER APPENDIX- EAST ROATCAP CREEK
• Media Type: D
• Archive: No

TABLE OF CONTENTS
• PAGE
EXECUTIVE SUMMARY i
1.0 INTRODUCTION 1
2.0 SURFACE WATER HYDROLOGY 1
2.1 Regional Hydrology 1
2.2 Regional Climatology 1
2.3 Local Drainage System Characteristics
and Hydrology 1
2.3.1 East Roatcap Creek 1
2.3.2 Portal Subbasins 3
2.4 Existing Surface Water Rights 4
2.5 Ongoing Surface Water Fionitoring 4
2.5.1 Recommendations for Future
Surface Water Monitoring 5
2.6 Proposed Hydraulic Structures 6
2.7 East Roatcap Creek Culvert 6
• 2.7.1 General Description 6
2.7.2 Design Criteria 6
2.7.3 Proposed Design 7
2.8 Diversion Ditches B
2.8.1 General Description 8
2.8.2 Design Criteria 9
2.8.3 Proposed Design 9
2.9 Sediment Pond 9
2.9.1 General Description 9
2.9.2 Design Criteria 10
2.9.3 Proposed Design 10
2.10 Fill Slope Sediment Control 11
2.10.1 General Description 11
2.10.2 Design Criteria 11
2.11 Probable Hydrologic Consequences 11
3.0 GROUND WATER HYDROLOGY 12
• 3.1 Regional Hydrology 12
3.2 Site Hydrology 13
3.2.1 Data Aquisition 13