CITY OF ORANGE MANUAL OF GRADING DEPARTMENT OF PUBLIC WORKS ENGINEERING DIVISION 2012 MANUAL OF GRADING CONTENTS 1. SCOPE AND PURPOSE........................................................................................................1 1.1 SCOPE.....................................................................................................................1 1.2 PURPOSE................................................................................................................1 2. DEFINITIONS........................................................................................................................2 3. PERMITS REQUIRED ..........................................................................................................8 3.1 GRADING PERMIT ...............................................................................................8 3.2 EXCEPTIONS TO GRADING PERMIT REQUIREMENT..................................8 3.3 GRADING PERMIT, PAVING AND HARD SURFACE .....................................9 3.4 GRADING PERMIT, WATERCOURSE ALTERATION.....................................9 3.5 GRADING PERMIT, STOCKPILING AND BORROW PITS............................10 3.6 GRADING PERMIT, WATER QUALITY BMP.................................................10 3.7 EXCAVATION BLASTING PERMIT.................................................................10 3.8 ROCK CRUSHING OPERATION .......................................................................10 3.9 WELL PERMIT.....................................................................................................10 3.10 SOIL EXPLORATORY DRILLINGS..................................................................11 3.11 TYPES OF GRADING PERMITS........................................................................11 3.12 UNAUTHORIZED GRADING ............................................................................11 4. ENFORCEMENT.................................................................................................................12 4.1 POWERS AND DUTIES OF THE CITY ENGINEER........................................12 4.2 ENFORCEMENT ORDERS.................................................................................12 4.3 VIOLATIONS AND PENALTIES .......................................................................13 4.4 NOTICE OF VIOLATION....................................................................................13 4.5 HAZARDOUS CONDITIONS .............................................................................14 5. GRADING PERMIT REQUIREMENTS.............................................................................16 5.1 PERMITS REQUIRED .........................................................................................16 5.2 GRADING PERMIT REVIEW AND APPROVAL PROCESS ..........................16 5.3 GRADING PLAN .................................................................................................17 5.4 GEOTECHNICAL REPORT AND ENGINEERING GEOLOGY REPORT......22 5.5 HYDROLOGY STUDY........................................................................................23 5.6 WATER QUALITY MANAGEMENT PLAN (WQMP).....................................23 5.7 PERMIT ISSUANCE, EXPIRATION, AND RENEWAL...................................24 5.8 DENIAL OF PERMIT...........................................................................................25 i 5.9 TIME OF GRADING OPERATIONS ..................................................................26 5.10 IMPORT OR EXPORT OF EARTH MATERIAL...............................................26 6. FEES .....................................................................................................................................27 6.1 PERMIT FEE.........................................................................................................27 6.2 PLAN CHECK AND INSPECTION DEPOSIT...................................................27 7. SECURITY...........................................................................................................................28 7.1 BONDS REQUIRED.............................................................................................28 7.2 EXCEPTIONS.......................................................................................................28 7.3 CONDITIONS.......................................................................................................28 7.4 FAILURE TO COMPLETE WORK.....................................................................28 7.5 DEFAULT IN PERFORMANCE OF CONDITIONS..........................................29 8. CUTS ....................................................................................................................................30 8.1 CUT SLOPES........................................................................................................30 8.2 LANDFORM GRADING .....................................................................................30 9. FILLS....................................................................................................................................31 9.1 FILL LOCATION .................................................................................................31 9.2 PREPARATION OF GROUND............................................................................31 9.3 FILL MATERIALS ...............................................................................................31 9.4 COMPACTION.....................................................................................................32 9.5 FILL SLOPES .......................................................................................................32 9.6 LANDFORM GRADING .....................................................................................33 10. SETBACK ..........................................................................................................................34 10.1 SETBACKS FROM PERMIT AREA BOUNDARY ...........................................34 10.2 DESIGN STANDARDS FOR SETBACKS .........................................................34 10.3 RETAINING WALLS...........................................................................................34 11. DRAINAGE........................................................................................................................36 11.1 DISPOSAL ............................................................................................................36 11.2 DRAINAGE ONTO ADJACENT PROPERTY ...................................................36 11.3 BUILDING SITES ................................................................................................36 11.4 TERRACES AND SURFACE DRAINAGE ........................................................37 11.5 SUBSURFACE DRAINAGE................................................................................37 11.6 INTERCEPTOR DRAINS ....................................................................................37 12. ASPHALT CONCRETE PAVEMENT..............................................................................39 12.1 ASPHALT CONCRETE AND UNTREATED BASE STANDARDS ................39 ii 12.2 SUB-GRADE COMPACTION.............................................................................39 12.3 SOIL STERILIZATION........................................................................................39 12.4 SURFACE DRAINAGE .......................................................................................39 12.5 PAVEMENT STRUCTURAL SECTION ............................................................40 13. EROSION & SEDIMENT CONTROL AND LANDSCAPING .......................................41 13.1 EROSION & SEDIMENT CONTROL.................................................................41 13.2 EROSION AND SEDIMENT CONTROL PLAN................................................42 13.3 WATER QUALITY REQUIREMENTS ..............................................................43 13.4 EROSION AND SEDIMENT CONTROL MAINTENANCE............................43 13.5 PLANTING OF SLOPE AND EXPOSED AREAS .............................................44 14. GRADING INSPECTIONS................................................................................................45 14.1 GENERAL.............................................................................................................45 14.2 PRE-GRADING MEET ........................................................................................45 14.3 GRADING REQUIREMENTS.............................................................................45 14.4 TERMINATION OF SERVICES..........................................................................46 14.5 REVISED GRADING PLAN................................................................................46 14.6 REQUIRED INSPECTIONS FOR GRADING ....................................................47 15. COMPLETION OF WORK ...............................................................................................51 15.1 FINAL REPORTS.................................................................................................51 15.2 NOTIFICATION OF COMPLETION ..................................................................53 15.3 GRADING BOND RELEASE..............................................................................53 REFERENCES .........................................................................................................................54 iii 1. SCOPE AND PURPOSE 1. SCOPE AND PURPOSE