05-05-2022 Planning Commission Packet

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K:\019789-000\Cad\Plan\019789-000-C-GRAD-PLAN.dwg 4/26/2022 11:47:36 AMC-109 AS SHOWN LCW JMSDJK 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.DATEDESCRIPTIONVANDERBIE COMMONSLENNAR HOMES - LITTLE CANADA, MINNESOTA019789-000 James M Soltis04-08-2022XXXXXGRADING NOTES GRADING NOTES 1.RELOCATE BENCHMARKS AS NECESSARY WITH NEW BENCHMARK LOCATIONS WITHIN A TOLERANCE OF 0.010 VERTICAL FEET. 2.BUILDING FLOOR ELEVATION (FFE) AS INDICATED ON THE DRAWINGS CORRESPONDS TO ELEVATION 100'-0" ON ALL OTHER DISCIPLINE SHEETS (ARCHITECTURAL, STRUCTURAL, ETC). 3.THE PROPOSED GRADES SHOWN ON THE GRADING PLAN ARE FINISHED GRADES. SPOT ELEVATIONS ALONG CURB LINES REPRESENT THE FLOWLINE UNLESS OTHERWISE NOTED. 5.SPOT ELEVATIONS SHOWN AT CATCH BASINS ON THIS PLAN DO NOT REFLECT 2" CASTING SUMP. 6.GRADING ACTIVITY WHICH BLOCKS TRAFFIC OF ANY STREET, ALLEY, OR DRIVE IS SUBJECT TO APPROVAL BY THE CITY. 7.CONTRACTOR SHALL STOP WORK IMMEDIATELY AND NOTIFY THE ENGINEER AND OWNER IF CONTAMINANTS ARE FOUND IN THE EXISTING SOILS. 8.SIDEWALK CROSS-SLOPES SHALL NOT EXCEED 2.0% AND LONGITUDINAL SLOPES SHALL NOT EXCEED 5.0%. 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. 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. ALL PROPOSED STORM SEWER WITHIN THE SITE IS PRIVATE UNLESS OTHERWISE NOTED. 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%. 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 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. 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. SILT FENCE SHALL BE INSTALLED PRIOR TO ANY REMOVALS. 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.COORDINATE ALL LAND DISTURBING ACTIVITIES AND CONDUCT SO AS TO MINIMIZE THE SIZE OF 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 SO AS TO MINIMIZE OFF-SITE SEDIMENTATION DAMAGE. RESTABILIZE DISTURBED AREAS AS SOON AS POSSIBLE AFTER CONSTRUCTION IS COMPLETED. 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. 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 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 PRIOR TO DISCHARGING INTO RECEIVING WATER. THE DEWATERING PLAN MUST ENSURE THAT THE DISCHARGE WATER 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. 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 TABULATION OF PROJECT AREAS IMPERVIOUS BEFORE DEVELOPMENT IMPERVIOUS AFTER DEVELOPMENT TOTAL PROJECT AREA (BOUNDARY)21.4 ACRES 0 ACRES 11.2 ACRES EARTHWORK UNADJUSTED FILL NET CUT UNADJUSTED CUT THIS IS AN ENGINEER'S ESTIMATE AND DOES NOT INCLUDE HOLD DOWNS OR ANY REQUIRED SOILS CORRECTIONS. CONTRACTOR RESPONSIBLE FOR VERIFYING ACTUAL REQUIRED EARTHWORK FOR SITE. #### CY #### CY #### CY