10-13-2022 Planning Commission Packet

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K:\019789-000\Cad\Plan\PHASE 1\019789-000-C-GRAD-NOTE-PH 1-PLAN.dwg 9/23/2022 10:53:19 AMCG-104 AS SHOWN LCW KWHLCW/SJH SCALE: PLAN BY: DESIGN BY: CHECK BY: SHEET WSB PROJECT NO.I HEREBY CERTIFY THAT THIS PLAN, SPECIFICATION,OR REPORT WAS PREPARED BY ME OR UNDER MYDIRECT SUPERVISION AND THAT I AM A DULYLICENSED PROFESSIONAL ENGINEER UNDER THELAWS OF THE STATE OF MINNESOTA.LIC. NO:DATE:REVISIONSNO.DATEDESCRIPTIONPIONEER COMMONSLENNAR HOMES - LITTLE CANADA, MINNESOTA019789-000 KYLE W. HOFF09/23/202259709GRADING NOTES GRADING NOTES 1.RELOCATE BENCHMARKS AS NECESSARY WITH NEW BENCHMARK LOCATIONS WITHIN A TOLERANCE OF 0.010 VERTICAL FEET. 2.SLAB ON GRADE (SOG) ELEVATIONS, AS INDICATED ON THE CIVIL DRAWINGS, CORRESPONDS TO ELEVATION 100'-0" ON ALL OTHER DISCIPLINE SHEETS (ARCHITECTURAL, STRUCTURAL, ETC). SLAB ON GRADE ELEVATIONS ARE ALSO THE LOW FLOOR ELEVATIONS FOR ALL BUILDINGS. 3.THE PROPOSED GRADES SHOWN ON THE GRADING PLAN ARE FINISHED GRADES. SPOT ELEVATIONS ALONG CURB LINES REPRESENT THE FLOWLINE UNLESS OTHERWISE NOTED. 4.CATCH BASINS AT LOW POINTS SHALL HAVE ADDITIONAL 2" CASTING SUMP BELOW SPOT GRADES SHOWN ON THE PLAN. 5.GRADING ACTIVITY WHICH BLOCKS TRAFFIC OF ANY STREET, ALLEY, OR DRIVE IS SUBJECT TO APPROVAL BY THE CITY. 6.CONTRACTOR SHALL STOP WORK IMMEDIATELY AND NOTIFY THE ENGINEER AND OWNER IF CONTAMINANTS ARE FOUND IN THE EXISTING SOILS. 7.SIDEWALK AND BITUMINOUS TRAIL CROSS-SLOPES SHALL NOT EXCEED 2.0% AND LONGITUDINAL SLOPES SHALL NOT EXCEED 5.0%. 8.STRIP TOPSOIL PRIOR TO PLACING FILL. 9.IN AREAS WHERE NEW FILL IS TO BE PLACED ON SLOPING GROUND, BENCHING THE SURFACE SHALL BE COMPLETED PRIOR TO PLACING THE FILL. BENCHING SHALL BE COMPLETED WHERE SLOPES ARE STEEPER THAN 4:1 (HORIZONTAL:VERTICAL). 10.PROVIDE POSITIVE DRAINAGE AT ALL TIMES WITHIN THE CONSTRUCTION AREA. DO NOT ALLOW WATER TO POND IN EXCAVATION AREAS, AND MAINTAIN ALL EXISTING DRAINAGE PATTERNS. 11.UNLESS OTHERWISE NOTED, FINISH GRADE SHALL BE SIX INCHES BELOW FINISHED FLOOR IN NON-PAVED AREAS. 12.THE CONTRACTOR SHALL BE RESPONSIBLE TO COMPLY WITH ALL OSHA REGULATIONS IN THE EXECUTION OF WORK UNDER THIS CONTRACT. 13.THE CONTRACTOR SHALL APPLY FOR A CITY GRADING PERMIT BEFORE STARTING WORK. THE INSPECTOR AND THE CITY PUBLIC WORKS DEPARTMENT SHALL BE NOTIFIED BY THE CONTRACTOR 48 HOURS BEFORE START OF CONSTRUCTION. NO WORK MAY BEGIN UNTIL THE PERMIT HAS BEEN RECEIVED AND THE CONTRACTOR MUST COMPLY WITH THE TERMS OF THE PERMIT. 14.ALL NON-PAVED AREAS SHALL RECEIVE A FOUR-INCH (4") LAYER OF TOPSOIL. INSTALL SEED ACCORDING TO THE OVERALL SEEDING PLAN. 15.THE CONTRACTOR SHALL ADJUST TO GRADE ALL MANHOLE STRUCTURES AND APPURTENANCES THAT FALL WITHIN THE LIMITS OF THIS CONTRACT. THE CONTRACTOR SHALL KEEP ALL SAID EXISTING UTILITIES AND THEIR APPURTENANCES FREE OF DEBRIS AND OPERABLE AT ALL TIMES DURING CONSTRUCTION. 16.ALL GRADES WITHIN THE LANDSCAPED AREA SHALL NOT EXCEED 4 HORIZONTAL TO 1 VERTICAL AND HAVE A MINIMUM GRADE OF 2%, UNLESS OTHERWISE NOTED. GRADED SWALES MUST HAVE A MINIMUM BOTTOM SLOPE OF 2.0% LONGITUDINALLY. 17.ALL PAVEMENT GRADES SHALL BE AS FOLLOWS IN THE DIRECTION OF FLOW: ASPHALT PAVEMENT - 1.5% MINIMUM, 5% MAXIMUM CONCRETE PAVEMENT - 1% MINIMUM, 5% MAXIMUM CONCRETE CURB AND GUTTER - 0.50% MINIMUM 18.MASS GRADING OPERATIONS BEYOND PHASE 1 BOUNDARY SHALL ALSO COMPLY WITH THE FOLLOWING: 18.1.CONTRACTOR TO GRADE TO THE BOTTOM OF STREET SECTION AND BUILDING PAD HOLD-DOWNS. 18.2.CONTRACTOR TO MAINTAIN POSITIVE DRAINAGE IN THE INTERIM FOR ALL FUTURE LOW POINT LOCATIONS WHERE STORM SEWER IS NOT BEING BUILT IN THIS PHASE. 19.CONCRETE WASHOUT IS NOT PERMITTED ONSITE. EROSION CONTROL NOTES 1.A STORMWATER POLLUTION PREVENTION PLAN (SWPPP) IS INCLUDED WITH THIS PROJECT. FAILURE TO IMPLEMENT THE CONTROLS AND PRACTICES OUTLINED WOULD RESULT IN VIOLATION OF THE ENVIRONMENTAL PROTECTION ACT AND CLEAN WATER ACT AND IS GROUNDS FOR PENALTIES. CONTRACTOR IS RESPONSIBLE FOR PAYMENT OF ALL FINES AND PENALTIES ISSUED BY THE CITY AND OTHER GOVERNING AGENCIES FOR INADEQUATE EROSION CONTROL. 2.ESTABLISH SEDIMENT CONTROL MEASURES AT THE BEGINNING OF CONSTRUCTION AND MAINTAIN DURING THE ENTIRE LENGTH OF CONSTRUCTION. AREAS WHICH ARE SUBJECT TO SEVERE EROSION AND OFF-SITE AREAS WHICH ARE ESPECIALLY VULNERABLE TO DAMAGE FROM EROSION AND/OR SEDIMENTATION ARE TO BE IDENTIFIED AND RECEIVE ADDITIONAL EROSION AND SEDIMENT CONTROL MEASURES AS DIRECTED BY THE OWNER'S CONSTRUCTION REPRESENTATIVE. EROSION CONTROL DEVICES SHALL BE INSTALLED PROPERLY PRIOR TO ANY LAND DISTURBING ACTIVITIES. 3.LOCATIONS OF STABILIZED CONSTRUCTION ENTRANCES INDICATED ON PLANS ARE APPROXIMATE. CONTRACTOR SHALL ADJUST LOCATION AND SIZE OF ENTRANCES TO ACCOMMODATE CONSTRUCTION VEHICLES AND ACTIVITIES. 4.CONDUCT ALL LAND DISTURBING ACTIVITIES TO MINIMIZE THE AREA TO BE EXPOSED AT ANY ONE TIME AND MINIMIZE THE TIME OF EXPOSURE. MASS CLEARING AND GRADING OF THE ENTIRE SITE SHOULD BE AVOIDED. COORDINATE ALL LAND DISTURBING ACTIVITIES TO MINIMIZE OFF-SITE SEDIMENTATION DAMAGE. RESTABILIZE DISTURBED AREAS AS SOON AS POSSIBLE AFTER CONSTRUCTION IS COMPLETED IN ACCORDINACE WITH THE NPDES PERMIT. 5.PERIODICALLY CLEAN OUT AND DISPOSE OF ALL SEDIMENT ONCE THE STORAGE CAPACITY OF THE DRAINAGE FEATURE OR STRUCTURE RECEIVING THE SEDIMENT IS REDUCED BY ONE-HALF. CLEAN OUT AND DISPOSE OF ALL SEDIMENT AT THE COMPLETION OF THE PROJECT. ALL STREETS IN AND ADJACENT TO THE PROJECT SHALL REMAIN CLEAN AND PASSABLE AT ALL TIMES. ANY SEDIMENT OR DEBRIS SHALL BE REMOVED WITHIN 24 HOURS, OR AS OFTEN AS NEEDED TO ENSURE PUBLIC SAFETY AND TO COMPLY WITH THE NPDES PERMIT. CONTRACTOR IS REQUIRED TO MAINTAIN AND REPLACE ALL EROSION CONTROL DEVICES AS NECESSARY TO COMPLY WITH THE NPDES PERMIT AND CITY REQUIREMENTS AT NO COST TO THE OWNER. 6.INLET PROTECTION WILL BE INSTALLED AT ALL CATCH BASINS WITHIN THE PROJECT AREA. THE CONTRACTOR SHALL PROVIDE APPROPRIATE EROSION CONTROL DEVICES FOR STOCKPILE AREAS, INLETS AND DITCHES. DITCHES MUST BE STABILIZED WITHIN 200 LINEAL FEET FROM THE PROPERTY EDGE, OR FROM THE POINT OF DISCHARGE TO ANY SURFACE WATER. STABILIZATION MUST BE COMPLETED WITHIN 24 HOURS OF CONNECTING TO SURFACE WATER. 7.REMOVE THE TEMPORARY EROSION AND SEDIMENT CONTROL DEVICES AND VERIFY THE CLEANING OUT OF ALL STORM DRAINAGE STRUCTURES, INCLUDING FLUMES, PIPES, AND DITCHES ONCE FINAL STABILIZATION HAS OCCURRED. 8.PIPE OUTLETS NEED TEMPORARY OR PERMANENT ENERGY DISSIPATION WITHIN 24 HOURS OF GOING ONLINE. 9.WHEN DEWATERING IS REQUIRED, CONTRACTOR MUST SUBMIT A DEWATERING PLAN TO THE ENGINEER FOR APPROVAL AT LEAST 10 DAYS PRIOR TO THE PROPOSED DEWATERING ACTIVITY. THE PLAN MUST INCLUDE A DEWATERING SYSTEM COMPLETE WITH SEDIMENT REMOVAL SYSTEM PRIOR TO DISCHARGE. THE DEWATERING SYSTEM MUST ENSURE THE DISCHARGE IS FREE OF SEDIMENT AND TURBID WATER. 10.ADDITIONAL EROSION AND SEDIMENT CONTROLS MAY BE ADDED DURING ANY PHASE OF CONSTRUCTION AS DIRECTED BY THE ENGINEER. 11.THE CONTRACTOR SHALL PROVIDE PERIMETER CONTROL DAY - TO - DAY AT DISTURBED, UNSTABILIZED AREAS WHERE EROSION OR SEDIMENTATION COULD BE A PROBLEM. THE ENGINEER SHALL DIRECT THE CONTRACTOR AS TO WHERE PLACEMENT OF PERIMETER CONTROL WILL BE REQUIRED. 12.THE CONTRACTOR MUST COMPLY WITH ALL NOISE AND DUST CONTROL ORDINANCES OF THE CITY. 13.MASS GRADING AREAS BEYOND PHASE 1 BOUNDARY TO BE STABILIZED ACCORDING TO EROSION CONTROL PLAN AND WITH SEED AS SHOWN IN SEEDING PLAN. PER STANDARD DETAILSINLET PROTECTION TEMPORARY EROSION AND SEDIMENT CONTROL PROVISIONS WEEKLY INSPECTION & AFTER EACH RAIN EVENT-CORRECTIVE WORK AS NECESSARY EROSION & SEDIMENT CONTROL MAINTENANCE ALSO SEE INSPECTION AND MAINTENANCE REQUIREMENTS CONTAINED IN GENERAL PROVISIONS OF SWPPP. (LESS THAN 4:1) - TYPE 1 MULCH, DISC ANCHORED. (GREATER THAN 4:1) - STABALIZED FIBER MATRIX @ 3,000 lbs/ac. IF BLANKET CANNOT BE INSTALLED WITHIN 14 DAYS. SCHEDULE ALSO SEE INSPECTION AND MAINTENANCE REQUIREMENTS CONTAINED IN GENERAL PROVISIONS OF SWPPP. PERMANENT EROSION AND SEDIMENT CONTROL PROVISIONS PERMANENT COVER - ALL OTHER DISTURBED AREAS TYPE 1 STRAW MULCH WITH DISC ANCHOR AND STATE SEED MIX 25-131 (LOW MAINTENANCE TURF GRASS STABILIZATION) @ 220 lbs/ac WITH FERTILIZER TYPE 3 (SLOW RELEASE; 22-5-10) @ 350 lbs/ac. UNLESS BLANKET IS SPECIFIED ON PLANS. OR SOD WITH FERTILIZER TYPE 3 (SLOW RELEASE; 22-5-10) @ 200 lbs/ac STORMWATER POND SLOPE EROSION CONTROL BLANKET CATEGORY 3N/2S (WOOD FIBER) WITH STATE SEED MIX 33-261 @ 35 lbs/ac. WITH TYPE 4 FERTILIZER (NATURAL BASED; 18-1-8) @ 150 lbs/ac. PERMANENT COVER - BLANKETED AREAS EROSION CONTROL BLANKET CATEGORY 3N/2S (WOOD FIBER) WITH STATE SEED MIX 35-241 @ 36.5 lbs/ac WITH TYPE 4 FERTILIZER (NATURAL BASED; 18-1-8) @ 150 lbs/ac. EROSION CONTROL BLANKET CATEGORY 3N/2S (WOOD FIBER) EROSION CONTROL BLANKET ITEM PRIOR TO CONSTRUCTION AND IMMEDIATELY AS DICTATED SILT FENCE, PERIMETER CONTROLS MnDOT SEED MIX 21-111 (SPEC 3876) 100 lbs/ac. COVER CROPS SCALE: - CG-104 TYPICAL SOG HOLD DOWN GRADE DETAIL TOWNHOME NOT TO SCALE VARIES 21'29.5' LFE LO (LOWEST UNPROTECTED OPENING) SEE PLAN FINISH GRADE DRIVE PER PLAN INTERIM GRADE GARAGE ELEVATION 1.0' HOLD DOWN TOP OF FOUNDATION 10"22' MIN. BACK OF CURB SCALE: - CG-104 TYPICAL SOG HOLD DOWN GRADE DETAIL MANOR HOME NOT TO SCALE VARIES 21'-10 1 2"11'-11 3 4" LFE LO (LOWEST UNPROTECTED OPENING) SEE PLAN FINISH GRADE DRIVE PER PLAN INTERIM GRADE GARAGE ELEVATION 1.0' HOLD DOWN TOP OF FOUNDATION 22' MIN. BACK OF CURB WEEKLY INSPECTION & AFTER EACH RAIN EVENT-CORRECTIVE WORK AS NECESSARY TEMPORARY SEDIMENT TRAP