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SOIL MAP
<br />IN ACCORDANCE WITH SECTION 21 OF THE GENERAL PERMIT AUTHORIZATION TO DISCHARGE STORMWATER
<br />ASSOCIATED WITH CONSTRUCTION ACTIVITY UNDER THE NPDES, THE PREPARER OF THIS DOCUMENT WAS TRAINED
<br />UNDER THE UNIVERSITY OF MINNESOTA EROSION AND SEDIMENT CONTROL CERTIFICATION PROGRAM. THOMAS
<br />RASMUSSEN’S CERTIFICATION IN DESIGN OF SWPPP IS VALID THROUGH MAY 31, 2026.
<br />THE ADJACENT TABLE INDICATES THE ESTIMATED MATERIAL QUANTITIES NECESSARY TO IMPLEMENT THE TEMPORARY AND
<br />PERMANENT EROSION PREVENTION AND SEDIMENT CONTROL BMPS IDENTIFIED IN THIS SWPPP AND ON THE CONSTRUCTION
<br />DRAWINGS. TEMPORARY AND PERMANENT EROSION PREVENTION AND SEDIMENT CONTROL BMPS WILL BE INSTALLED/CONSTRUCTED
<br />WHEN NECESSARY AS CONSTRUCTION ACTIVITIES PROGRESS AND IN ACCORDANCE WITH THE NPDES PERMIT REQUIREMENTS.
<br />MAINTAIN AND REPLACE BMPs DURING THE EXECUTION OF THE PROJECT AS REQUIRED TO CONTINUE SWPPP COVERAGE DURING
<br />CONSTRUCTION
<br />NOTE: QUANTITIES ON PLAN SUPERCEDES LIST
<br />QUANTITIES IN A DISCREPANCY
<br />SWPPP DOCUMENTS
<br />INSPECTIONS
<br />IMPAIRED WATERS, SPECIAL WATERS, AND WETLANDS
<br />ESTIMATED BMP QUANTITIES AND INSTALLATION SCHEDULE
<br />CERTIFICATION
<br />PROJECT NAME: PRIMROSE SCHOOL - LAKE ELMO
<br />PROJECT LOCATION: LAKE ELMO, MINNESOTA. WASHINGTON COUNTY.
<br />PROJECT TYPE: SCHOOL WITH ASSOCIATED PARKING LOTS, PROPOSED ROADS, BUILDINGS, STORMWATER POND
<br />AND INFILTRATION BASIN, AND UTILITIES.
<br />TOTAL AREA DISTURBED BY CONSTRUCTION: APPROXIMATELY 1.7 ACRES. THE TOTAL SITE AREA IS APPROXIMATELY
<br />1.7 ACRES.
<br />ESTIMATED CONSTRUCTION DATES: FALL 2025 - SPRING 2026
<br />CUMULATIVE IMPERVIOUS SURFACE/PERMANENT STORMWATER MANAGEMENT REQUIREMENTS:
<br />THE PROPOSED PROJECT RESULTS IN A ±1.09 ACRE NET INCREASE IN IMPERVIOUS SURFACE WITHIN THE LIMITS OF
<br />DISTURBANCE. FUTURE DEVELOPMENT IS ANTICIPATED TO CONNECT LINDEN AVENUE TO STILLWATER WAY. THE
<br />FOUR COMMERCIAL LOTS WILL BE DEVELOPED INDIVIDUALLY. THE REMAINING AREA WILL BE DEVELOPED INTO VMDR
<br />USE.
<br />THE SITE ULTIMATELY DRAINS TO, BUT IS NOT WITHIN 1 MILE OF, A LAKE THE SOUTH, WHICH IS LISTED AS AN
<br />IMPAIRED WATER FOR AQUATIC RECREATION. THERE ARE CURRENTLY NO TMDLS FOR THE WATERBODY FOR
<br />AQUATIC RECREATION.
<br />THE PERMANENT STORMWATER SYSTEM WILL CONSIST OF A STORMWATER WET POND FOR IRRIGATION REUSE AND
<br />A STORMWATER INFILTRATION BASIN. THE WET POND WILL DISCHARGE TO THE STORMWATER INFILTRATION BASIN
<br />AS WELL AS THE EXISTING STORM NETWORK TO THE SOUTH OF THE SITE. THE INFILTRATION BASIN WILL DISCHARGE
<br />TO THE EXISTING STORM NETWORK TO THE SOUTH OF THE SITE. THE STORMWATER ULTIMATELY DISCHARGES TO
<br />DOWNS LAKE TO THE SOUTH OF THE SITE.
<br />PARTY RESPONSIBLE FOR LONG TERM OPERATION AND MAINTENANCE OF THE SITE (OWNER): PRIMROSE SCHOOL
<br />FRANCHISING COMPANY
<br />CONTACT: MARVIN WENSMAN
<br />CONTACT EMAIL: MWENSMAN@PRIMROSESCHOOLS.COM
<br />PARTY RESPONSIBLE FOR IMPLEMENTATION OF THE SWPPP (CONTRACTOR): TBD
<br />CONTRACTOR: TBD
<br />CONTRACTOR PHONE: TBD
<br />CONTRACTOR EMAIL: TBD
<br />CONTRACTOR SHALL PROVIDE A CHAIN OF RESPONSIBILITY WITH ALL OPERATORS ON THE SITE FOR
<br />INCORPORATION INTO THIS SWPPP DOCUMENT TO ENSURE THAT THE SWPPP WILL BE IMPLEMENTED AND STAY IN
<br />EFFECT UNTIL THE CONSTRUCTION PROJECT IS COMPLETE (THROUGH FINAL STABILIZATION AND NOT SUBMITTAL).
<br />CONTRACTOR SHALL ALSO PROVIDE DOCUMENTATION OF PERSONNEL TRAINING IN ACCORDANCE WITH THE PERMIT
<br />FOR INCORPORATION INTO THIS SWPPP DOCUMENT AS SOON AS THE PERSONNEL FOR THE PROJECT HAVE BEEN
<br />DETERMINED. CONTRACTOR IS RESPONSIBLE FOR KEEPING A FINAL SWPPP DOCUMENT, CONTAINING THE
<br />INFORMATION REQUIRED ABOVE, AT THE CONSTRUCTION SITE FOR THE DURATION OF THE PROJECT.
<br />THE SWPPP IS COMPOSED OF, BUT NOT LIMITED TO, THE BELOW PROJECT DOCUMENTS. THESE DOCUMENTS SHALL
<br />BE KEPT ON THE PROJECT SITE AT ALL TIMES THROUGHOUT CONSTRUCTION. THE SWPPP SHALL BE AMENDED BY
<br />THE PERSON RESPONSIBLE TO INCLUDE ANY DOCUMENTS NECESSARY TO ENSURE ADHERENCE TO THE GENERAL
<br />PERMIT.
<br />PRIMROSE PROJECT CIVIL CONSTRUCTION DRAWINGS BY STANTEC DATED APRIL, 2025
<br />PRIMROSE PROJECT STORMWATER MANAGMENT PLAN BY STANTEC DATED APRIL, 2025
<br />RECORD RETENTION - THE SWPPP, ALL CHANGES TO IT, AND INSPECTION AND MAINTENANCE RECORDS MUST BE
<br />KEPT ON-SITE DURING CONSTRUCTION; THE CONSTRUCTION DRAWINGS ARE INCORPORATED HEREIN BY
<br />REFERENCE, AND A COPY OF THE PLAN SET SHOULD BE KEPT ON-SITE WITH THE SWPPP RECORDS. THE OWNER
<br />MUST RETAIN A COPY OF THE SWPPP ALONG WITH THE FOLLOWING RECORDS FOR THREE (3) YEARS AFTER
<br />SUBMITTAL OF THE NOTICE OF TERMINATION:
<br />1.ANY OTHER PERMITS REQUIRED FOR THE PROJECT;
<br />2.RECORDS OF ALL INSPECTION AND MAINTENANCE CONDUCTED DURING CONSTRUCTION;
<br />3.ALL PERMANENT OPERATIONS AND MAINTENANCE AGREEMENTS THAT HAVE BEEN IMPLEMENTED, INCLUDING
<br />ALL RIGHT OF WAY, CONTRACT, COVENANTS AND OTHER BINDING REQUIREMENTS REGARDING PERPETUAL
<br />MAINTENANCE; AND
<br />4.ALL REQUIRED CALCULATIONS FOR DESIGN OF THE TEMPORARY AND PERMANENT STORMWATER
<br />MANAGEMENT SYSTEMS.
<br />THE INSPECTION LOG WILL BE COMPLETED BY THE CONTRACTOR FOR THE CONSTRUCTION SITE.
<br />INSPECTOR(S): TBD - TRAINING DOCUMENTATION (PER SECTION 21.2 OF THE PERMIT) WILL BE INCORPORATED INTO
<br />THIS SWPPP AS SOON AS THE PERSONNEL FOR THE PROJECT HAVE BEEN DETERMINED. THE CONTRACTOR WILL
<br />MAKE CORRECTIONS OR REPAIRS REQUIRED TO COMPLY WITH THE PERMIT.
<br />INSPECTIONS AT THE SITE WILL BE COMPLETED IN ACCORDANCE WITH THE PERMIT AS FOLLOWS:
<br /> ONCE EVERY 7 DAYS DURING ACTIVE CONSTRUCTION AND,
<br /> WITHIN 24 HOURS AFTER A RAINFALL EVENT GREATER THAN 0.5 INCHES IN 24 HOURS.
<br />1.THE INDIVIDUAL PERFORMING INSPECTIONS MUST BE TRAINED AS REQUIRED BY SECTION 21.3 OF THE PERMIT.
<br />TRAINING DOCUMENTATION SHALL BE PROVIDED BY THE CONTRACTOR FOR INCORPORATION INTO THE SWPPP.
<br />INSPECTIONS MUST INCLUDE STABILIZED AREAS, EROSION PREVENTION AND SEDIMENT CONTROL BMPS, AND
<br />INFILTRATION AREAS. CORRECTIVE ACTIONS MUST BE IDENTIFIED AND DATE OF CORRECTION MUST BE NOTED
<br />AS IDENTIFIED IN SECTION 11.11 OF THE PERMIT. ANY OFFSITE DISCHARGE MUST BE DOCUMENTED AS
<br />IDENTIFIED IN SECTION 11.11 OF THE PERMIT. ANY AMENDMENTS TO THE SWPPP PROPOSED AS A RESULT OF
<br />THE INSPECTION MUST BE DOCUMENTED WITHIN SEVEN (7) CALENDAR DAYS. AN INSPECTION LOG IS ALSO
<br />ATTACHED; THE INSPECTION LOG AND SWPPP MUST BE KEPT ON-SITE FOR THE DURATION OF THE
<br />CONSTRUCTION PROJECT.
<br />AT A MINIMUM, THE FOLLOWING SHALL BE COMPLETED DURING EACH INSPECTION:
<br />-RECORD DATE AND TIME OF INSPECTION.
<br />-RECORD RAINFALL RECORDS SINCE THE MOST RECENT INSPECTION.
<br />-INSPECT THE SITE FOR EXCESS EROSION AND SEDIMENTATION.
<br />-INSPECT THE SITE FOR DEBRIS, TRASH, AND SPILLS.
<br />-INSPECT TEMPORARY EROSION AND SEDIMENTATION CONTROL DEVICES.
<br />-INSPECT CONSTRUCTION ENTRANCES FOR SEDIMENT TRACKING ONTO PUBLIC STREETS.
<br />-RECORD RECOMMENDED REPAIRS AND MODIFICATIONS TO EROSION AND SEDIMENT CONTROLS.
<br />-RECOMMEND ANY NECESSARY CHANGES TO THIS SWPPP.
<br />-RECORD REPAIRS AND MODIFICATIONS IMPLEMENTED SINCE PREVIOUS INSPECTIONS.
<br />-INSPECT THE ADJACENT STREETS AND CURB AND GUTTER FOR SEDIMENT, LITTER, AND CONSTRUCTION DEBRIS.
<br />THE GENERAL CONTRACTOR MUST UPDATE THE SWPPP, INCLUDING THE JOBSITE BINDER AND SITE MAPS, TO
<br />REFLECT THE PROGRESS OF CONSTRUCTION ACTIVITIES AND GENERAL CHANGES TO THE PROJECT SITE. UPDATES
<br />SHALL BE MADE DAILY TO TRACK PROGRESS WHEN ANY OF THE FOLLOWING ACTIVITIES OCCUR: BMP INSTALLATION,
<br />MODIFICATION OR REMOVAL, CONSTRUCTION ACTIVITIES (E.G. PAVING, SEWER INSTALLATION, ETC), CLEARING,
<br />GRUBBING, GRADING, OR TEMPORARY AND PERMANENT STABILIZATION.
<br />THE CONTRACTOR MAY UPDATE OR MODIFY THE SWPPP WITHOUT ENGINEER APPROVAL IN AN EMERGENCY
<br />SITUATION TO PREVENT SEDIMENT DISCHARGE OR PROTECT WATER QUALITY. THE CONTRACTOR IS ULTIMATELY
<br />RESPONSIBLE TO ENSURE COMPLIANCE WITH THE PERMIT AND PROTECTION OF DOWNSTREAM WATER QUALITY.
<br />PRIOR TO ANY SITE DISTURBANCE, AND AS REQUIRED AS CONSTRUCTION PROGRESSES, ANY PERMIT REQUIRED
<br />EROSION PREVENTION MEASURES AND THE SEDIMENT CONTROL DEVICES (INLET PROTECTION, CONSTRUCTION
<br />ENTRANCE, CULVERT END PROTECTION, EROSION CONTROL BLANKET, SILT FENCE) SHOWN ON THE CONSTRUCTION
<br />DRAWINGS WILL BE INSTALLED AT THE SITE.
<br />ALL EXPOSED SOIL AREAS WITHIN THE CONSTRUCTION LIMITS WILL BE STABILIZED WITHIN 7/14 DAYS AFTER THE
<br />CONSTRUCTION ACTIVITY IN THAT PORTION OF THE SITE HAS TEMPORARILY (WILL NOT RESUME FOR A PERIOD
<br />EXCEEDING 7 CALENDAR DAYS) OR PERMANENTLY CEASED. STABILIZATION WILL BE INITIATED IMMEDIATELY.
<br />EXPOSED SOIL AREAS MUST HAVE TEMPORARY EROSION PROTECTION (SLASH MULCH, EROSION CONTROL BLANKET,
<br />SEED) OR PERMANENT COVER YEAR ROUND.
<br />CONTRACTOR SHALL IMPLEMENT APPROPRIATE CONSTRUCTION PHASING, VEGETATIVE BUFFER STRIPS,
<br />HORIZONTAL SLOPE GRADING, AND OTHER CONSTRUCTION PRACTICES THAT MINIMIZE EROSION WHEN PRACTICAL.
<br />THE NORMAL WETTED PERIMETER OF ANY TEMPORARY OR PERMANENT DRAINAGE DITCH THAT DRAINS WATER
<br />FROM A CONSTRUCTION SITE, OR DIVERTS WATER AROUND A SITE, MUST BE STABILIZED WITHIN 200 LINEAL FEET
<br />FROM THE PROPERTY EDGE, OR FROM THE POINT OF DISCHARGE TO ANY SURFACE WATER. STABILIZATION MUST
<br />BE COMPLETED WITHIN 24 HOURS OF CONNECTING TO A SURFACE WATER. PIPE OUTLETS MUST BE PROVIDED WITH
<br />TEMPORARY OR PERMANENT ENERGY DISSIPATION WITHIN 24 HOURS OF CONNECTION TO A SURFACE WATER.
<br />SWPPP IMPLEMENTATION, PHASING, AND SEQUENCE OF CONSTRUCTION:
<br />BMP AND EROSION CONTROL INSTALLATION SEQUENCE SHALL BE AS FOLLOWS:
<br />1.CONSTRUCT STABILIZED CONSTRUCTION ENTRANCE, CONCRETE WASHOUT PIT, AND INSTALL SILT FENCE.
<br />2.INSTALL INLET PROTECTION AT EXISTING STORMWATER CULVERTS AND INLETS.
<br />3.PREPARE TEMPORARY STORAGE, PARKING, AND PHASING AREAS.
<br />4.CONSTRUCT AND STABILIZE DIVERSIONS AND TEMPORARY SEDIMENT TRAPS/BASINS.
<br />5.PERFORM CLEARING AND GRUBBING OF THE SITE, IF APPLICABLE.
<br />6.PERFORM MASS GRADING, ROUGH GRADE TO ESTABLISH PROPOSED DRAINAGE PATTERNS.
<br />7.BEGIN EXCAVATION OF PERMANENT STORMWATER BASIN AREAS. SEE SEQUENCING BELOW FOR ADDITIONAL
<br />INFORMATION.
<br />8.START CONSTRUCTION OF THE BUILDING PAD AND STRUCTURES.
<br />9.INSTALL SMALL UTILITIES (GAS, ELECTRIC, PHONE, CABLE, ETC.).
<br />10.PAVE CURB AND GUTTER, SIDEWALK, AND PARKING LOT/ DRIVEWAYS.
<br />11.TEMPORARILY SEED WITH PURE LIVE SEED THROUGHOUT CONSTRUCTION. DISTURBED AREAS THAT WILL BE
<br />INACTIVE FOR 14 DAYS OR MORE AS REQUIRED BY NPDES OR PERMIT.
<br />SEDIMENT CONTROL PRACTICES MUST MINIMIZE SEDIMENT FROM ENTERING SURFACE WATERS, INCLUDING CURB
<br />AND GUTTER SYSTEMS AND STORM SEWER INLETS. THE FOLLOWING MEASURES WILL BE TAKEN AS SEDIMENT
<br />CONTROL PRACTICES IN ORDER TO MINIMIZE SEDIMENTS FROM ENTERING SURFACE WATERS:
<br />1.INSTALLATION OF SEDIMENT CONTROL PRACTICES ON ALL DOWN GRADIENT PERIMETERS PRIOR TO LAND
<br />DISTURBING ACTIVITIES.
<br />2.SILT FENCING, BIOLOGS, OR OTHER SEDIMENT CONTROL SURROUNDING TEMPORARY SOIL STOCKPILES.
<br />3.VEHICLE TRACKING BMP AT CONSTRUCTION SITE ENTRANCE/EXIT. STREET SWEEPING SHALL BE PERFORMED
<br />IF VEHICLE TRACKING BMPS ARE NOT ADEQUATE TO PREVENT SEDIMENT TRACKING. TRACKED SEDIMENT
<br />MUST BE REMOVED FROM ALL PAVED SURFACES BOTH ON AND OFFSITE WITHIN 24 HOURS OF DISCOVERY PER
<br />THE PERMIT.
<br />4.STREET SWEEPING IS NOT TO BE USED AS A PRIMARY BMP FOR SEDIMENT TRACKING. IF SEDIMENT IS TRACKED
<br />OFFSITE, WORK WILL CEASE UNTIL PROPER EROSION CONTROL AND SEDIMENT CONTROL DEVICES ARE
<br />INSTALLED AND/OR BEING MAINTAINED TO PREVENT TRACKING BEYOND THE SITE'S PERIMETER (CONTAINMENT
<br />AREA). ALL STREET SWEEPING MUST BE PERFORMED UTILIZING A PICK-UP SWEEPER. IF NECESSARY WATER
<br />WILL ALSO BE USED TO CLEAN UP THE STREETS PRIOR TO BEING SWEPT TO ENSURE THEY ARE FULLY
<br />CLEANED.
<br />THE FOLLOWING GUIDELINES WILL BE USED TO DETERMINE IF POLLUTION CONTROL DEVICES REQUIRE
<br />MAINTENANCE, REPAIR, OR REPLACEMENT:
<br />-IF SEDIMENT CONTROL DEVICES SUCH AS SILT FENCE ARE FILLED TO 1/3 THE HEIGHT OF THE FENCE, REMOVE ALL
<br />SEDIMENT WITHIN 24 HOURS OF DETECTION OR NOTIFICATION.
<br />-IF INLET PROTECTION DEVICES APPEAR PLUGGED WITH SEDIMENT, ARE FILLED TO 1/3 CAPACITY, OR HAVE
<br />STANDING WATER AROUND THEM, REMOVE THE SEDIMENT AND CLEAN OR REPLACE THE FILTER WITHIN 24 HOURS
<br />OF DETECTION OR NOTIFICATION.
<br />-IF THE GRAVEL CONSTRUCTION ENTRANCE(S) ARE FILLED WITH SEDIMENT EITHER REPLACE THE ENTRANCE OR
<br />ADD ADDITIONAL GRAVEL WITH 24 HOURS OF DETECTION OR NOTIFICATION.
<br />-IF SEDIMENT FROM THE SITE IS OBSERVED ON ADJACENT STREETS OR OTHER PROPERTIES, THE INSPECTOR SHALL
<br />IDENTIFY THE SOURCE AND DISCHARGE LOCATION OF THE SEDIMENT AND INSTRUCT TO IMPLEMENT ADDITIONAL
<br />EROSION AND SEDIMENT CONTROLS AT THOSE LOCATIONS TO PREVENT FUTURE DISCHARGES.
<br />-IF BUILDING MATERIALS, CHEMICALS, OR GENERAL REFUSE IS BEING USED, STORED, DISPOSED OF, OR OTHERWISE
<br />MANAGED INAPPROPRIATELY, CORRECT SUCH DEFECTS WITHIN 24 HOURS OF DETECTION OR NOTIFICATION.
<br />-IF EXCESSIVE SEDIMENTS OR DEBRIS ARE OBSERVED AT THE FLARED END SECTION OUTFALLS, THE INSPECTOR
<br />SHALL DETERMINE THE SOURCE AND DISCHARGE LOCATIONS OF SUCH MATERIALS. IF THE DISCHARGE HAS
<br />OCCURRED ON THE PROPERTY, REMOVE THE SEDIMENTS AND DEBRIS WITHIN 24 HOURS OF NOTIFICATION AND
<br />CORRECT THE SOURCE OF SUCH MATERIALS AS DIRECTED BY THE INSPECTOR
<br />SOLID WASTE:
<br />SOLID WASTE, INCLUDING BUT NOT LIMITED TO, COLLECTED ASPHALT AND CONCRETE MILLINGS, FLOATING DEBRIS,
<br />PAPER, PLASTIC, FABRIC, CONSTRUCTION AND DEMOLITION DEBRIS AND OTHER WASTE, INCLUDING ALL TRASH
<br />ONSITE, MUST BE REGULARLY DISPOSED OF PROPERLY AND MUST COMPLY WITH MPCA DISPOSAL REQUIREMENTS.
<br />HAZARDOUS MATERIALS:
<br />HAZARDOUS MATERIALS, INCLUDING BUT NOT LIMITED TO OIL, GASOLINE, PAINT AND ANY HAZARDOUS SUBSTANCE
<br />MUST BE PROPERLY STORED INCLUDING SECONDARY CONTAINMENTS, TO PREVENT SPILLS, LEAKS OR OTHER
<br />DISCHARGE. RESTRICTED ACCESS TO STORAGE AREAS MUST BE PROVIDED TO PREVENT VANDALISM. STORAGE AND
<br />DISPOSAL OF HAZARDOUS WASTE MUST BE IN COMPLIANCE WITH MCPA REGULATIONS.
<br />CONSTRUCTION EQUIPMENT/VEHICLES:
<br />EXTERNAL WASHING OF TRUCKS AND OTHER CONSTRUCTION VEHICLES MUST BE LIMITED TO A DEFINED AREA OF
<br />THE SITE. RUNOFF MUST BE CONTAINED AND WASTE PROPERLY DISPOSED OF. NO ENGINE DEGREASING IS
<br />ALLOWED ON SITE. REASONABLE STEPS TO PREVENT THE DISCHARGE OF SPILLED OR LEAKED CHEMICALS SHALL BE
<br />TAKEN. ADEQUATE SUPPLIES MUST BE AVAILABLE AT ALL TIMES TO CLEAN UP DISCHARGED MATERIALS; CONDUCT
<br />FUELING IN A CONTAINED AREA UNLESS INFEASIBLE.
<br />CONCRETE WASHOUT AREA:
<br />CONCRETE WASHOUT WILL BE PERMITTED ON-SITE; CONTRACTOR SHALL FOLLOW ALL PERMIT REQUIREMENTS FOR
<br />CONCRETE WASHOUT. THE CONTRACTOR SHALL PROVIDE EFFECTIVE CONTAINMENT FOR ALL LIQUID AND SOLID
<br />WASTES GENERATED BY WASHOUT OPERATIONS. LIQUID AND SOLID WASHOUT WASTES MUST NOT CONTACT THE
<br />GROUND AND THE CONTAINMENT MUST BE DESIGNED TO PROHIBIT RUNOFF FROM THE WASHOUT
<br />OPERATIONS/AREAS. LIQUID AND SOLID WASTES MUST BE DISPOSED OF PROPERLY AND IN COMPLIANCE WITH
<br />MPCA RULES. A SIGN MUST BE INSTALLED ADJACENT TO EACH WASHOUT FACILITY THAT REQUIRES SITE
<br />PERSONNEL TO UTILIZE THE PROPER FACILITIES FOR CONCRETE WASHOUT AND DISPOSAL OF WASHOUT WASTES.
<br />CONTRACTOR SHALL REVISE SWPPP TO INDICATE WASHOUT LOCATION ONCE THE LOCATION HAS BEEN
<br />DETERMINED.
<br />FERTILIZERS AND LANDSCAPE MATERIALS MUST BE UNDER COVER TO PREVENT THE DISCHARGE OF POLLUTANTS
<br />OR PROTECTED BY SIMILARLY EFFECTIVE MEANS DESIGNED TO MINIMIZE CONTACT WITH STORMWATER.
<br />PORTABLE TOILETS MUST BE POSITIONED SO THAT THEY ARE SECURE AND WILL NOT BE TIPPED OR KNOCKED OVER.
<br />SANITARY WASTE MUST BE DISPOSED OF PROPERLY.
<br />POLLUTION PREVENTION MEASURES
<br />PROJECT INFORMATION EROSION AND SEDIMENT CONTROLIMPAIRED WATERS MAP
<br />GENERAL SWPPP NOTES
<br />DEWATERING IS NOT ANTICIPATED TO BE REQUIRED DURING TRENCHING FOR UTILITY CONSTRUCTION. IN THE
<br />EVENT THAT DEWATERING IS NECESSARY CONTRACTOR SHALL COMPLY WITH PERMIT SECTION 10.1 REQUIREMENTS
<br />FOR DEWATERING.
<br />THIS SWPPP SHALL BE AMENDED BY THE CONTRACTOR IN ACCORDANCE WITH THE PERMIT AS NECESSARY TO
<br />INCLUDE ADDITIONAL REQUIREMENTS, TO CORRECT PROBLEMS IDENTIFIED, OR TO ADDRESS SITUATIONS PER
<br />SECTION 6.1 OF THE PERMIT.
<br />THE PROJECT WILL NOT DISTURB MORE THAN 10 ACRES THAT PROMOTE DRAINAGE TO A COMMON LOCATION,
<br />THEREFORE A TEMPORARY SEDIMENT BASIN WILL NOT BE REQUIRED. THIS SWPPP SHALL BE AMENDED BY THE
<br />CONTRACTOR IN ACCORDANCE WITH THE GENERAL PERMIT TO INCLUDE ADDITIONAL TEMPORARY SEDIMENTATION
<br />BASINS, IF THEY BECOME NECESSARY. BASINS, IF DESIGNED BY THE CONTRACTOR, SHALL ACCOMMODATE NO LESS
<br />THAN 3,600 CUBIC FEET OF LIVE STORAGE PER ACRE OF CONTRIBUTING DRAINAGE AREA. BASIN OUTLETS SHALL BE
<br />DESIGNED TO WITHDRAW WATER FROM THE SURFACE OF THE BASIN, PREVENT SHORT-CIRCUITING AND THE
<br />DISCHARGE OF FLOATING DEBRIS. BASINS SHALL HAVE A STABILIZED EMERGENCY OVERFLOW LOCATION AND BE
<br />DESIGNED TO PREVENT THE DISCHARGE OF POLLUTANTS TO THE EXTENT PRACTICAL.
<br />FINAL STABILIZATION:
<br />ALL PERVIOUS AREAS DISTURBED BY CONSTRUCTION AS DESIGNATED WILL RECEIVE VEGETATIVE COVER
<br />ACCORDING TO THE PLANS AND SPECIFICATIONS AND WITHIN THE SPECIFIED VEGETATIVE TIME SCHEDULE. FINAL
<br />STABILIZATION WILL OCCUR WHEN THE SITE HAS A UNIFORM VEGETATIVE COVER WITH A DENSITY OF 70% OVER THE
<br />RESTORED PERVIOUS AREAS. ALL TEMPORARY SYNTHETIC EROSION PREVENTION AND SEDIMENT CONTROL BMPS
<br />(SUCH AS SILT FENCE) MUST BE REMOVED AS PART OF THE SITE FINAL STABILIZATION. ALL SEDIMENT MUST BE
<br />CLEANED OUT OF CONVEYANCES AND TEMPORARY SEDIMENTATION BASINS IF APPLICABLE. NOTICE OF
<br />TERMINATION (NOT) MUST BE SUBMITTED WITHIN 30 DAYS OF FINAL STABILIZATION.
<br />THIS PROJECT IS NOT LOCATED WITHIN ONE MILE OF AN IMPAIRED WATER. THE PROJECT ULTIMATELY DISCHARGES TO
<br />DOWNS LAKE THAT IS LOCATED SOUTH OF THE PROJECT LOCATION.
<br />THE PROJECT SITE DISCHARGES TO AN INFILTRATION BASIN FOR STORMWATER MANAGEMENT PRIOR TO THE ULTIMATE
<br />DISCHARGE POINT ONSITE. THE PROJECT WILL NOT IMPACT WETLANDS.
<br />SITE SOILS - SITE SOILS ARE SHOWN ON THIS SHEET. THIS PROJECT IS NOT LOCATED IN A KARST AREA.
<br />INFILTRATION BASIN SEQUENCING NOTES
<br />1.CONTRACTOR SHALL STAGE CONSTRUCTION APPROPRIATELY AND INSTALL ALL NECESSARY EROSION CONTROL
<br />TO PREVENT SEDIMENT WASHING INTO THE INFILTRATION BASIN.
<br />2.FINAL GRADING OF THE BASIN SHALL BE ACCOMPLISHED USING LOW-IMPACT EARTH MOVING EQUIPMENT TO
<br />PREVENT COMPACTION. SMALL TRACKED DOZERS AND SKID STEERS ARE RECOMMENDED.
<br />3.IN THE EVENT THAT SEDIMENT IS INTRODUCED INTO THE INFILTRATION BASIN, THIS MATERIAL WILL NEED TO BE
<br />REMOVED PRIOR TO PROCEEDING WITH CONSTRUCTION.
<br />4.INFILTRATION BASIN SHALL BE FREE AND CLEAR OF SEDIMENT UPON FINAL COMPLETION OF CONSTRUCTION.
<br />5.ALL SLOPES WITHIN PERMANENT STORMWATER SYSTEM (INCLUDING SWALES, BASINS, AND PONDS) SHALL BE
<br />STABILIZED WITH A EROSION CONTROL BLANKET.
<br />6.THE PROJECT AREA MUST BE STAKED OFF AND MARKED TO KEEP ALL CONSTRUCTION TRAFFIC, EQUIPMENT AND
<br />MATERIAL STOCKPILES OUT OF THE PROPOSED INFILTRATION AREAS.
<br />7.INFILTRATION PRACTICES SHALL NOT BE EXCAVATED UNTIL THE CONTRIBUTING DRAINAGE AREAS WITH
<br />EXPOSED SOIL HAVE BEEN FULLY STABILIZED AND BITUMINOUS BASE COURSE INSTALLED ON CONTRIBUTING
<br />PAVEMENT AREAS. DIVERT UPLAND DRAINAGE AREAS TO PREVENT RUNOFF FROM ENTERING THE EXCAVATED
<br />CELL OR INTO THE WORK AREA.
<br />8.CARE MUST BE TAKEN TO AVOID CONTAMINATION OF INFILTRATION BASIN SOILS WITH SEDIMENT, IN-SITU OR
<br />TOPSOIL DURING AND AFTER INSTALLATION. MATERIALS MUST BE SEGREGATED.
<br />9.KEEP INFILTRATION SYSTEMS OFF-LINE BY RESTRICTING STORM WATER INFLOW UNTIL VEGETATION IS WELL
<br />ESTABLISHED IN THE CELL AND ALL UP GRADIENT AREAS HAVE BEEN STABILIZED AND IMPERVIOUS SURFACES
<br />CLEARED OF CONSTRUCTION SEDIMENT.
<br />10.PROVIDE TOPSOIL IN ACCORDANCE WITH DETAILS AND SPECIFICATIONS. PROVIDE SEED IN ACCORDANCE WITH
<br />THE EROSION CONTROL PLAN, LANDSCAPE PLAN, AND NPDES PERMIT.
<br />DWN BY:
<br />ISSUE DATE:
<br />PROJECT NO.:
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<br />CHK'D BY:APP'D BY:
<br />CERTIFICATION:
<br />1 CARLSON PKWY N
<br />PLYMOUTH, MN 55447
<br />PHONE: 763-479-4200
<br />WWW.STANTEC.COM
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<br />SAG MJS JRA
<br />04/09/2025
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<br />WARNING:
<br />THE CONTRACTOR SHALL BE RESPONSIBLE FOR CALLING FOR LOCATIONS OF ALL EXISTING UTILITIES. THEY SHALL
<br />COOPERATE WITH ALL UTILITY COMPANIES IN MAINTAINING THEIR SERVICE AND/OR RELOCATION OF LINES.
<br />THE CONTRACTOR SHALL CONTACT GOPHER STATE ONE CALL AT 651-454-0002 AT LEAST 48 HOURS IN ADVANCE FOR
<br />THE LOCATIONS OF ALL UNDERGROUND WIRES, CABLES, CONDUITS, PIPES, MANHOLES, VALVES OR OTHER BURIED
<br />STRUCTURES BEFORE DIGGING. THE CONTRACTOR SHALL REPAIR OR REPLACE THE ABOVE WHEN DAMAGED DURING
<br />CONSTRUCTION AT NO COST TO THE OWNER.
<br />GOPHER STATE ONE CALL
<br />TWIN CITY AREA: 651-454-0002
<br />TOLL FREE 1-800-252-1166
<br />CALL BEFORE YOU DIG
<br />DATE:
<br />I HEREBY CERTIFY THAT THIS PLAN,
<br />SPECIFICATION, OR REPORT WAS
<br />PREPARED BY ME OR UNDER MY
<br />DIRECT SUPERVISION AND THAT I AM A
<br />DULY LICENSED PROFESSIONAL
<br />ENGINEER UNDER THE LAWS OF THE
<br />STATE OF MINNESOTA.
<br />LICENSE NO.:59296
<br />04/09/2025
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<br />SWPPP
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