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K:\TWC_LDEV\Scannell\arden hills, mn\3 Design\CAD\plansheets\C3-EROS PH2 PLAN.dwg August 21, 2020 - 1:02pmSHEETNOT 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 8/21/2020NORTHEROSION CONTROL PLAN NOTES1. ALL PERIMETER SILT FENCE AND ROCK CONSTRUCTION ENTRANCES SHALL BEINSTALLED PRIOR TO CONSTRUCTION.2. THE CONTRACTOR SHALL CONSTRUCT DRAINAGE BASINS PRIOR TO SITE GRADING.3. THE CONTRACTOR SHALL INSTALL CATCH BASIN EROSION CONTROL MEASURES.4. WITHIN ONE WEEK (7 DAYS) OF SITE GRADING, ALL DISTURBED AREAS SHALL BESTABILIZED WITH SEED, SOD, OR ROCK BASE. REFER TO LANDSCAPE PLANS FORMATERIALS.5. ALL EROSION CONTROL MEASURES SHALL BE INSTALLED AND MAINTAINED INACCORDANCE WITH CITY, STATE, AND WATERSHED DISTRICT PERMITS.6. THE CONTRACTOR SHALL MAINTAIN ALL EROSION CONTROL MEASURES, INCLUDINGTHE REMOVAL OF SILT IN FRONT OF SILT FENCES DURING THE DURATION OF THECONSTRUCTION.7. ANY EXCESS SEDIMENT IN PROPOSED BASINS SHALL BE REMOVED BY THECONTRACTOR.8. REMOVAL ALL EROSION CONTROL MEASURES AFTER VEGETATION IS ESTABLISHED.9. THE CONTRACTOR SHALL REMOVE ALL SOILS AND SEDIMENT TRACKED ONTOEXISTING STREETS AND PAVED AREAS AND SHALL SWEEP ADJACENT STREETS ASNECESSARY IN ACCORDANCE WITH CITY REQUIREMENTS.10. IF BLOWING DUST BECOMES A NUISANCE, THE CONTRACTOR SHALL APPLY WATERFROM A TANK TRUCK TO ALL CONSTRUCTION AREAS.UPON IMPLEMENTATION AND INSTALLATION OF THE FOLLOWING AREAS: TRAILER,PARKING, LAYDOWN, PORTA-POTTY, WHEEL WASH, CONCRETE WASHOUT, FUELAND MATERIAL STORAGE CONTAINERS, SOLID WASTE CONTAINERS, ETC.,IMMEDIATELY DENOTE THEM ON THE SITE MAPS AND NOTE ANY CHANGES INLOCATION AS THEY OCCUR THROUGHOUT THE CONSTRUCTION PROCESS.BMP AND EROSION CONTROL INSTALLATION SEQUENCE SHALL BE AS FOLLOWS:1. INSTALL INLET PROTECTION AT EXISTING STORMWATER CULVERTS.2. CONSTRUCT STABILIZED CONSTRUCTION ENTRANCE (1), CONCRETE WASHOUTPIT (1) AND INSTALL SILT FENCE.3. PREPARE TEMPORARY PARKING AND STORAGE AREA.4. CONSTRUCT AND STABILIZE DIVERSIONS AND TEMPORARY SEDIMENT TRAPS.5. PERFORM CLEARING AND GRUBBING OF THE SITE. PERFORM MASS GRADING.ROUGH GRADE TO ESTABLISH PROPOSED DRAINAGE PATTERNS.6. START CONSTRUCTION OF THE BUILDING PAD AND STRUCTURES.7. TEMPORARILY SEED WITH PURE LIVE SEED, THROUGHOUT CONSTRUCTION,DISTURBED AREAS THAT WILL BE INACTIVE FOR 7 DAYS OR MORE OR ASREQUIRED BY NPDES AND/OR CITY OF ARDEN HILLS GRADING PERMIT.SEQUENCE OF CONSTRUCTION:ROCK ENTRANCEINLET PROTECTIONSILT FENCELIMITS OF DISTURBANCESAFETY FENCELEGENDKEYNOTE LEGENDLIMITS OF DISTURBANCEINLET PROTECTIONSILT FENCECONSTRUCTION ENTRANCERIP RAPINSTALL EROSION CONTROL BLANKET ON SLOPES 4:1 AND STEEPERABCDEFLIMITS OF DISTURBANCE 17.60 ACTOTAL SITE AREA 26.22 ACPRE-DEVELOPMENT PERVIOUS AREA 25.93 ACPRE-DEVELOPMENT IMPERVIOUS AREA 0.29 ACPOST-DEVELOPMENT PERVIOUS AREA 14.56 ACPOST-DEVELOPMENT IMPERVIOUS AREA 11.66 ACRECEIVING BODY OF WATER: THE SITEDISCHARGES TO ADJACENT WETLAND ON-SITEAND OFF-SITE. THE SITE IS WITHIN 1 MILE OF THEIMPAIRED VALENTINE LAKE, BUT IT DOES NOTCONTRIBUTE FLOW DIRECTLY TO THESE WATERSAS THE DISCHARGE IS LIMITED TO THEADJACENT WETLANDSPH. II BMP QUANTITIESBMPUNITQUANTITYCONSTRUCTIONENTRANCEEA. 1INLET PROTECTION EA 27SILT FENCE LF±3,000THE GC MUST UPDATE THE SWPPP, INCLUDING THE JOBSITE BINDER ANDSITE MAPS, TO REFLECT THE PROGRESS OF CONSTRUCTION ACTIVITIESAND GENERAL CHANGES TO THE PROJECT SITE. UPDATES SHALL BE MADEDAILY TO TRACK PROGRESS WHEN ANY OF THE FOLLOWING ACTIVITIESOCCUR: BMP INSTALLATION, MODIFICATION OR REMOVAL, CONSTRUCTIONACTIVITIES (E.G., PAVING, STORM SEWER INSTALLATION, FOOTINGINSTALLATION, ETC.), CLEARING, GRUBBING OR GRADING, OR TEMPORARYOR PERMANENT STABILIZATION.SWPPP UPDATES AND AMENDMENTSDELINEATED WETLANDEROSION CONTROL BLANKET