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K:\TWC_LDEV\Scannell\arden hills, mn\3 Design\CAD\plansheets\C5-GRADING PLAN.dwg August 21, 2020 - 1:03pmSHEETNOT FOR CONSTRUCTIONBRJBRJ/LEC71155-200422020 KIMLEY-HORN AND ASSOCIATES, INC.767 EUSTIS STREET, SUITE 100, ST. PAUL, MN 551141 CITY SUBMITTAL 5/1/20202 CITY SUBMITTAL 7/20/20203 WATERSHED UPDATE 7/24/20204 WATERSHED UPDATE 8/21/2020GRADING PLAN NOTES1. ALL WORK SHALL BE PERFORMED IN ACCORDANCE WITH THE CITY OF ARDEN HILLS,SPECIFICATIONS AND BUILDING PERMIT REQUIREMENTS.2. CONTRACTOR TO CALL GOPHER STATE CALL ONE @ <1-800-252-1166> AT LEAST TWOWORKING DAYS PRIOR TO EXCAVATION/CONSTRUCTION FOR UTILITY LOCATIONS.3. CONTRACTOR TO FIELD VERIFY THE LOCATIONS AND ELEVATIONS OR EXISTINGUTILITIES AND TOPOGRAPHIC FEATURES PRIOR TO THE START OF SITE GRADING. THECONTRACTOR SHALL IMMEDIATELY NOTIFY THE PROJECT ENGINEER OF ANYDISCREPANCIES OR VARIATIONS.4. SUBGRADE EXCAVATION SHALL BE BACKFILLED IMMEDIATELY AFTER EXCAVATION TOHELP OFFSET ANY STABILITY PROBLEMS DUE TO WATER SEEPAGE OR STEEP SLOPES.WHEN PLACING NEW SURFACE MATERIAL ADJACENT TO EXISTING PAVEMENT, THEEXCAVATION SHALL BE BACKFILLED PROMPTLY TO AVOID UNDERMINING OF EXISTINGPAVEMENT.5. CONTRACTOR SHALL EXCAVATE DRAINAGE TRENCHES TO FOLLOW PROPOSED STORMSEWER ALIGNMENTS.6. GRADES SHOWN ARE FINISHED GRADES. CONTRACTOR SHALL ROUGH GRADE TOSUBGRADE ELEVATION AND LEAVE STREET READY FOR SUBBASE.7. ALL EXCESS MATERIAL, BITUMINOUS SURFACING, CONCRETE ITEMS, ANY ABANDONEDUTILITY ITEMS, AND OTHER UNSTABLE MATERIALS SHALL BECOME THE PROPERTY OFTHE CONTRACTOR AND SHALL BE DISPOSED OF OFF THE CONSTRUCTION SITE.8. REFER TO THE UTILITY PLAN FOR SANITARY SEWER MAIN, WATER MAIN SERVICELAYOUT AND ELEVATIONS AND CASTING / STRUCTURE NOTATION.9. CONTRACTOR IS RESPONSIBLE FOR CONSTRUCTION OF PAVEMENTS AND CURB ANDGUTTER WITH SMOOTH UNIFORM SLOPES TO PROVIDE POSITIVE DRAINAGE.10. INSTALL A MINIMUM OF 4" CLASS 5 AGGREGATE BASE UNDER CURB AND GUTTER ANDCONCRETE SIDEWALKS.11. UPON COMPLETION OF EXCAVATION AND FILLING, CONTRACTOR SHALL RESTORE ALLSTREETS AND DISTURBED AREAS ON SITE. ALL DISTURBED AREAS SHALL BERE-VEGETATED WITH A MINIMUM OF 4" OF TOPSOIL.12. ALL SPOT ELEVATIONS/CONTOURS ARE TO GUTTER / FLOW LINE UNLESS OTHERWISENOTED.13. GRADING FOR ALL SIDEWALKS AND ACCESSIBLE ROUTES INCLUDING CROSSINGDRIVEWAYS SHALL CONFORM TO CURRENT ADA STATE/NATIONAL STANDARDS. IN NOCASE SHALL ACCESSIBLE RAMP SLOPES EXCEED 1 VERTICAL TO 12 HORIZONTAL. IN NOCASE SHALL SIDEWALK CROSS SLOPES EXCEED 2% . IN NO CASE SHALL LONGITUDINALSIDEWALK SLOPES EXCEED 5%. IN NO CASE SHALL ACCESSIBLE PARKING STALLS ORAISLES EXCEED 2% (1.5% TARGET) IN ALL DIRECTIONS. SIDEWALK ACCESS TO EXTERNALBUILDING DOORS AND GATES SHALL BE ADA COMPLIANT. CONTRACTOR SHALL NOTIFYENGINEER IMMEDIATELY IF ADA CRITERIA CANNOT BE MET IN ANY LOCATION PRIOR TOPAVING. NO CONTRACTOR CHANGE ORDERS WILL BE ACCEPTED FOR A.D.A COMPLIANCEISSUES.14. MAINTAIN A MINIMUM OF 0.5% GUTTER SLOPE TOWARDS LOW POINTS.15. MAINTAIN A MINIMUM OF 1.25% SLOPE IN BITUMINOUS PAVEMENT AREAS, 0.5% SLOPE INCONCRETE PAVEMENT AREAS.16. CONTRACTOR SHALL REVIEW PAVEMENT GRADIENT AND CONSTRUCT "INFALL CURB"WHERE PAVEMENT DRAINS TOWARD GUTTER, AND "OUTFALL" CURB WHERE PAVEMENTDRAINS AWAY FROM GUTTER.PROPOSED STORM SEWERPROPOSED STORM SEWERPROPERTY LINEEXISTING CONTOURPROPOSED CONTOUR925PROPOSED SPOT ELEVATION100.00LEGENDPROPOSED FLUSH PAVEMENT ELEVATION PROPOSED EMERGENCY OVERFLOW T/G:0.0EOF:0.00.0%PROPOSED DRAINAGE DIRECTION ME:0.0MATCH EXISTING ELEVATION PROPOSED STORM MANHOLE (SOLID CASTING)PROPOSED STORM MANHOLE (ROUND INLET CASTING)PROPOSED STORM MANHOLE/ CATCH BASIN (CURB INLET CASTING)PROPOSED STORM SEWER CLENOUTPROPOSED RIPRAPPROPOSED FLARED END SECTIONCODNORTHRETAINING WALL COORDINATION PLAN NOTES1. RETAINING WALL SHOWN IS ONLY SCHEMATIC. ACTUAL DETAILS SHALL BE DESIGNED BYTHE CONTRACTOR AND SUBMITTED FOR APPROVAL BY ENGINEER.2. THE CONTRACTOR SHALL DETERMINE ALL DIMENSIONS AND DETAILS NECESSARY FORINSTALLATION.3. RETAINING WALL SHALL BE RECON BLOCK WALL OR APPROVED EQUAL.4. CONTRACTOR SHALL COORDINATE TIMING OF THE INSTALLATION OF THE RETAININGWALL WITH ALL UTILITIES, SPECIFICALLY THE STORM SEWER AND WATERMAINADJACENT TO THE PROPOSED WALL.5. GEOTECHNICAL BORING INFORMATION BASEDON THE REPORT LISTED ON SHEET C100.6. FINISHED ELEVATIONS ON THE GRADING PLAN ARE AS STATED ON THE PLAN WITH THETOP OF WALL SPOTS AND BOTTOM OF WALL SPOTS DENOTING THE FINISHED GRADEELEVATIONS. ACTUAL BOTTOM AND TOP OF RETAINING WALL ELEVATIONS MAY VARYDUE TO MANUFACTURER REQUIREMENTS AND RECOMMENDATIONS.7. THE CONTRACTOR SHALL COORDINATE ALL ACTIVITIES WITH THE WALL REINFORCINGAND ROADWAY CONSTRUCTION AND WETLAND LIMITS. CONTRACTOR SHALL PERFORMALL NECESSARY COORDINATION, STAGING, TEMPORARY SHORING, AND SEQUENCINGAT NO EXTRA COST.Emb. Varies (6" Min.)APPROXIMATE LIMITS OF EXCAVATION(VARIES)Geogrid Depth ("L")TYPICAL REINFORCED WALL SECTIONPERFORATEDDRAINTILE (4" MIN)4" DRAIN TODAYLIGHT(or inlet whereapplicable)8" LOW PERMEABLE SOILUNIT DRAINAGE FILLRECON UNITCRUSHED STONE ORUNREINFORCED CONCRETE(6" MINIMUM THICKNESS)