02-22-2023 Council Packet - Laserfiche WebLink

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NO:DATE:REVISIONSNO.DATEDESCRIPTIONPIONEER COMMONS - 2ND ADDITIONLENNAR HOMES - LITTLE CANADA, MINNESOTA019789-000 KYLE W. HOFF5970902/06/2023LEGEND APPROX. CONSTRUCTION LIMITS EXISTING CONTOUR (MAJOR)1020 EXISTING CONTOUR (MINOR)1019 EXISTING FENCEXX 965.77 PROPOSED SPOT ELEVATION PROPERTY LINE EXISTING EASEMENT PROPOSED EASEMENT PROPOSED CONTOUR (MAJOR)1020 PROPOSED CONTOUR (MINOR)1019 EXISTING STORM STRUCTURE PROPOSED DRAINAGE STRUCTURE ST EXISTING STORM SEWER PIPE PROPOSED STORM SEWER PIPE>> >> EXISTING SANITARY SEWER MAIN> PROPOSED SANITARY SEWER MAIN> EXISTING SANITARY SEWER SERVICE PROPOSED SANITARY SEWER SERVICE EXISTING SANITARY STRUCTURE PROPOSED SANITARY STRUCTURE S S SF INLET PROTECTION FLOW DIRECTION SILT FENCE STABILIZED CONSTRUCTION ENTRANCE PROPOSED SLAB ON GRADE ELEVATIONSOG EXISTING SOIL BORINGSB ОООООООООООО BIO LOG EROSION CONTROL SF FIRST ADDITION TEMPORARY INLET PROTECTION RIP RAP FIRST ADDITION TEMPORARY SILT FENCE EROSION CONTROL BLANKET TYPE 3N 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.CONTRACTOR NOT TO DISTURB OR REMOVE EROSION CONTROL DEVICES INSTALLED AS PART OF THE 1ST ADDITION PROJECT WITHOUT WRITTEN APPROVAL OF THE ENGINEER AND THE 1ST ADDITION PROJECT CONTRACTOR. ANY REMOVED DEVICES ARE TO BE RE-INSTALLED AS SOON AS POSSIBLE. 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 WEEKLY INSPECTION & AFTER EACH RAIN EVENT-CORRECTIVE WORK AS NECESSARY TEMPORARY SEDIMENT TRAP 1ST ADDITION DEVELOPMENT AREA FUTURE ADDITION STREET E STREET F STREET G STREET H STREET 4STREET 2STREET 2 GRADING NOTES 1.GRADING CONTOURS REPRESENT FINISHED GRADE OF FULL DEVELOPMENT. MASS GRADING CONTRACT IN A PREVIOUS PHASE GRADED FULL SITE TO SUBGRADE OF STREETS, PARKING BAYS, BUILDING SLABS AND PONDS. CONTRACTOR TO PAVE 2ND ADDITION STREETS, SIDEWALKS, TRAILS AND PARKING BAYS TO FINISHED GRADE AS SHOWN. RIP-RAP PLACEMENT AT END OF CURB FLUME