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STORM WATER POLLUTION PREVENTION PLAN NARRATIVE - PAGE 1 OF 2
<br />ACREAGE SUMMARY
<br />AREA ACRES
<br />PROPERTY 24.8
<br />DISTURBED 21.3
<br />IMP. PRE-CONSTRUCTION 1.06
<br />IMP. POST-CONSTRUCTION 10.06
<br />NEW IMP.9.0
<br />PERVIOUS AT COMPLETION 14.74
<br />PROJECT DESCRIPTION/LOCATION
<br />ONEKA PRAIRIE IS LOCATED IN THE CITY OF HUGO IN WASHINGTON COUNTY, BOUNDED BY EMPRESS AVE
<br />N, EVERTON AVE N AND 165TH ST N. THE PROPERTY IS LOCATED IN RICE CREEK WATERSHED, AND
<br />ENCOMPASSES 24.8 ACRES.
<br />THE PLANNED SCOPE OF THE PROJECT INCLUDES:
<br />·THE INSTALLATION OF EROSION CONTROL MEASURES AS REQUIRED FOR THE MASS GRADING OF
<br />THE SITE FOR THE CONSTRUCTION OF NEW ROADS, AND HOUSES.
<br />·GRADING AS REQUIRED FOR THE INSTALLATION OF THE NEW HOUSES, SIDEWALKS, ROADS, AND
<br />STORMWATER PONDS.
<br />·THE CONSTRUCTION OF 4 STORMWATER PONDS.
<br />·INSTALLATION OF SANITARY SEWER, WATERMAIN, AND STORM SEWER.
<br />·PLACEMENT OF CONCRETE AS REQUIRED TO ESTABLISH CURB, GUTTER, AND SIDEWALKS
<br />THROUGHOUT THE SITE.
<br />·CONSTRUCTION OF NEW ROADS.
<br />RECEIVING WATERS
<br />THESE WATERS ARE LOCATED WITHIN ONE MILE (AERIAL RADIUS) OF THE PROJECT LIMITS AND RECEIVE
<br />RUNOFF FROM THE PROJECT SITE. DUE TO THE PROXIMITY OF THE RECEIVING WATERS, THE BMPS
<br />DESCRIBED IN APPENDIX A OF THE NPDES PERMIT MAY APPLY TO ALL AREAS OF THE SITE.
<br />HARDWOOD CREEK HAS AN APPROVED TMDL FOR DISSOLVED OXYGEN AND FISHES BIO, NOT FOR
<br />CONSTRUCTION RELATED ACTIVITIES
<br />SOIL TYPES
<br />SOIL TYPES TYPICALLY FOUND ON THIS PROJECT ARE SANDY LEAN CLAY AND CLAYEY LEAN SAND
<br />(GENERALLY TYPE B SOILS), WITH LESSER AMOUNTS OF POORLY GRADED SAND WITH SILT AND SILTY
<br />SAND (GENERALLY TYPE C SOILS), PER GEOTECHNICAL REPORT DATED 06/06/2022 GEOTECHNICAL
<br />REPORT IS TO BE KEPT ON SITE AS PART OF THE SWPPP AND IS TO BE MADE AVAILABLE UPON REQUEST.
<br />LONG TERM MAINTENANCE AND OPERATION
<br />SOUTHWIND HOLDINGS HAS ENTERED INTO A MAINTENANCE AGREEMENT WITH THE CITY OF HUGO THAT
<br />IDENTIFIES THE AGENCY THAT IS RESPONSIBLE FOR ONGOING MAINTENANCE, AND HOW RESPONSIBILITY
<br />WILL BE TRANSFERRED TO OTHER AGENTS, OR PRIVATELY MAINTAINED.
<br />PROJECT PERSONNEL AND TRAINING
<br />THIS SWPPP WAS PREPARED BY PERSONNEL THAT ARE CERTIFIED IN THE DESIGN OF CONSTRUCTION
<br />SWPPP. COPIES OF THE CERTIFICATIONS ARE ON FILE WITH THE ENGINEER.
<br />PROVIDE A CERTIFIED EROSION CONTROL SUPERVISOR IN GOOD STANDING WHO IS KNOWLEDGEABLE
<br />AND EXPERIENCED IN THE APPLICATION OF EROSION PREVENTION AND SEDIMENT CONTROL BEST
<br />MANAGEMENT PRACTICES. THE EROSION CONTROL SUPERVISOR WILL WORK WITH THE PROJECT
<br />ENGINEER / SWPPP DESIGNER TO OVERSEE THE IMPLEMENTATION OF THE SWPPP AND THE
<br />INSTALLATION, INSPECTION, AND MAINTENANCE OF THE EROSION PREVENTION AND SEDIMENT CONTROL
<br />BMPS BEFORE, DURING, AND AFTER CONSTRUCTION UNTIL THE NOTICE OF TERMINATION (NOT) HAS BEEN
<br />FILED WITH THE MPCA. PROVIDE PROOF OF CERTIFICATION AT THE PRECONSTRUCTION MEETING. WORK
<br />WILL NOT BE ALLOWED TO COMMENCE UNTIL PROOF OF CERTIFICATION HAS BEEN PROVIDED TO THE
<br />PROJECT ENGINEER.
<br />PROVIDE AT LEAST ONE CERTIFIED INSTALLER FOR EACH CONTRACTOR OR SUBCONTRACTOR THAT
<br />INSTALLS THE PRODUCTS LISTED IN SPECIFICATION SECTION 2573.3.A.2 CERTIFIED INSTALLERS. PROVIDE
<br />PROOF OF CERTIFICATION AT THE PRECONSTRUCTION MEETING. WORK WILL NOT BE ALLOWED TO
<br />COMMENCE UNTIL PROOF OF CERTIFICATION HAS BEEN PROVIDED TO THE PROJECT ENGINEER.
<br />CHAIN OF RESPONSIBILITY
<br />THE OWNER AND CONTRACTOR ARE CO-PERMITTEES FOR THE NATIONAL POLLUTANT DISCHARGE
<br />ELIMINATION SYSTEM (NPDES) CONSTRUCTION PERMIT. THE CONTRACTOR IS RESPONSIBLE TO COMPLY
<br />WITH ALL ASPECTS OF THE NPDES CONSTRUCTION PERMIT AT ALL TIMES UNTIL THE NOTICE OF
<br />TERMINATION (NOT) HAS BEEN FILED WITH THE MPCA THE CONTRACTOR WILL DEVELOP A CHAIN OF
<br />COMMAND WITH ALL OPERATORS ON THE SITE TO ENSURE THAT THE SWPPP WILL BE IMPLEMENTED AND
<br />STAY IN EFFECT UNTIL THE CONSTRUCTION PROJECT IS COMPLETE, THE ENTIRE SITE HAS UNDERGONE
<br />FINAL STABILIZATION, AND A NOTICE OF TERMINATION (NOT) HAS BEEN SUBMITTED TO THE MPCA.
<br />PROJECT CONTACTS
<br />THE CONTRACTOR IS RESPONSIBLE FOR IMPLEMENTATION OF THE SWPPP AND INSTALLATION,
<br />INSPECTION, AND MAINTENANCE OF THE EROSION PREVENTION AND SEDIMENT CONTROL BMPS BEFORE,
<br />DURING, AND AFTER CONSTRUCTION UNTIL THE NOTICE OF TERMINATION (NOT) HAS BEEN FILED.
<br />*CERTIFIED FOR DESIGN OF CONSTRUCTION SWPPP BY UNIVERSITY OF MINNESOTA, EXPIRES 5/31/23
<br />MPCA DUTY OFFICER 24 HOUR EMERGENCY NOTIFICATION:
<br />651-649-5451 OR 800-422-0798
<br />SITE INSPECTION AND MAINTENANCE
<br />CONTRACTOR SHALL PROVIDE NAME, CONTACT INFO, AND TRAINING DOCUMENTATION FOR THE PERSON
<br />RESPONSIBLE FOR SWPPP IMPLEMENTATION AND INSPECTION/MAINTENANCE OF BMPS.
<br />INSPECT THE ENTIRE CONSTRUCTION SITE A MINIMUM OF ONCE EVERY SEVEN DAYS DURING ACTIVE
<br />CONSTRUCTION AND WITHIN 24 HOURS AFTER A RAINFALL EVENT GREATER THAN 0.5 INCHES WITHIN A 24
<br />HOUR TIME FRAME. INSPECT ALL TEMPORARY AND PERMANENT WATER QUALITY MANAGEMENT, EROSION
<br />PREVENTION AND SEDIMENT CONTROL BMPS UNTIL THE SITE HAS UNDERGONE FINAL STABILIZATION AND
<br />THE N.O.T. HAS BEEN SUBMITTED. INSPECT SURFACE WATER INCLUDING DRAINAGE DITCHES FOR SIGNS
<br />OF EROSION AND SEDIMENT DEPOSITION. INSPECT CONSTRUCTION SITE VEHICLE EXIT LOCATIONS FOR
<br />EVIDENCE OF TRACKING ONTO PAVED SURFACES. INSPECT SURROUNDING PROPERTIES FOR EVIDENCE
<br />OF OFF SITE SEDIMENT ACCUMULATION.
<br />RECORD ALL INSPECTIONS AND MAINTENANCE ACTIVITIES IN WRITING WITHIN 24 HOURS. SUBMIT
<br />INSPECTION REPORTS IN A FORMAT THAT IS ACCEPTABLE TO THE PROJECT ENGINEER.
<br />FOR PROJECTS THAT DISCHARGE TO PROHIBITED WATERS, CONDUCT ROUTINE SITE INSPECTIONS AT A
<br />MINIMUM OF ONCE EVERY 72 HOURS (3 DAYS).
<br />INCLUDE THE FOLLOWING IN THE RECORDS OF EACH INSPECTION AND MAINTENANCE ACTIVITY:
<br />A.DATE AND TIME OF INSPECTIONS
<br />B.NAME OF PERSONS CONDUCTING INSPECTIONS
<br />C.FINDINGS OF INSPECTIONS, INCLUDING RECOMMENDATIONS FOR CORRECTIVE ACTIONS
<br />D.CORRECTIVE ACTION TAKEN, INCLUDING DATES, TIMES, AND PARTY COMPLETING MAINTENANCE
<br />ACTIVITIES
<br />E.DATE AND AMOUNT OF ALL RAINFALL EVENTS GREATER THAN 0.5 INCH IN 24 HOURS
<br />F.DOCUMENTS AND CHANGES MADE TO THE SWPPP
<br />REPLACE, REPAIR OR SUPPLEMENT ALL NONFUNCTIONAL BMPS BY IN THE TIME PROVIDED BELOW:
<br />A.REPAIR, REPLACE, OR SUPPLEMENT PERIMETER CONTROL DEVICES WHEN IT BECOMES
<br />NONFUNCTIONAL OR SEDIMENT REACHES 12 THE HEIGHT OF THE DEVICE. COMPLETE REPAIRS BY
<br />B.THE END OF THE NEXT BUSINESS DAY FOLLOWING DISCOVERY.
<br />C.REPAIR OR REPLACE INLET PROTECTION DEVICES WHEN THEY BECOME NONFUNCTIONAL OR
<br />SEDIMENT REACHES 12 THE HEIGHT AND/OR DEPTH OF THE DEVICE. COMPLETE REPAIRS BY THE
<br />END OF THE NEXT BUSINESS DAY FOLLOWING DISCOVER.
<br />D.DRAIN AND REMOVE SEDIMENT FROM TEMPORARY AND PERMANENT SEDIMENT BASINS ONCE THE
<br />SEDIMENT HAS REACHED 12 THE STORAGE VOLUME. COMPLETE WORK WITHIN 72 HOURS OF
<br />DISCOVERY.
<br />E.REMOVE ALL DELTAS AND SEDIMENT DEPOSITED IN SURFACE WATER INCLUDING DRAINAGE WAYS,
<br />CATCH BASINS, AND OTHER DRAINAGE SYSTEMS. RESTABILIZED ANY AREAS THAT ARE DISTURBED
<br />BY SEDIMENT REMOVAL OPERATION. SEDIMENT REMOVAL AND STABILIZATION MUST BE
<br />COMPLETED WITHIN 7 DAYS OF DISCOVERY. PREPARE AND SUBMIT A SITE MANAGEMENT PLAN
<br />FOR WORKING IN SURFACE WATERS.
<br />F.REMOVE TRACKED SEDIMENT FROM PAVED SURFACES BOTH ON AND OFF SITE WITHIN 24 HOURS
<br />OF DISCOVERY. STREET SWEEPING MAY HAVE TO OCCUR MORE OFTEN TO MINIMIZE OFF SITE
<br />IMPACTS. LIGHTLY WET THE PAVEMENT PRIOR TO SWEEPING
<br />G.MAINTAIN ALL BMPS UNTIL WORK HAS BEEN COMPLETED, SITE HAS GONE UNDER FINAL
<br />STABILIZATION, AND THE NOTICE OF TERMINATION (NOT) HAS BEEN SUBMITTED TO THE MPCA.
<br />AREA SUMMARY
<br />SPECIAL SITE NOTES
<br />IF SITE REQUIRES PERMANENT STORMWATER MANAGEMENT HYDROLOGIC AND WATER QUALITY
<br />MODELING DATA IS AVAILABLE UPON REQUEST.
<br />THE SWPPP COORDINATOR MUST BE AVAILABLE FOR AN ONSITE INSPECTION WITHIN 72 HOURS UPON
<br />REQUEST BY THE MPCA AND SHALL BE RESPONSIBLE FOR THE FOLLOWING:
<br />·SUBMIT THE NPDES PERMIT APPLICATION AND COMPLY WITH ALL REQUIREMENTS
<br />·IMPLEMENT THE SWPPP.
<br />·OVERSEE INSTALLATION AND MAINTENANCE PRACTICES AND REPAIRS IDENTIFIED IN THE SWPPP.
<br />·IMPLEMENT AND OVERSEE EMPLOYEE TRAINING AND RECORD IN OR WITH THE SWPPP.
<br />·CONDUCT OR PROVIDE FOR INSPECTION AND MONITORING ACTIVITIES AND MAINTAIN LOGS AS
<br />PERMIT REQUIRES.
<br />·IDENTIFY OTHER POTENTIAL POLLUTANT SOURCES NOT LISTED IN THE SWPPP AND ADD THEM.
<br />·IDENTIFY ANY DEFICIENCIES IN THE SWPPP AND CORRECT THEM.
<br />·ENSURE THAT CHANGES TO CONSTRUCTION PLANS ARE ADDRESSED IN THE SWPPP.
<br />·FILE THE NOTICE OF TERMINATION UPON PROJECT COMPLETION.
<br />AFTER THE NOTICE OF TERMINATION HAS BEEN FILED, THE OWNER SHALL BE RESPONSIBLE FOR
<br />ASSIGNING RESPONSIBILITY FOR PERMANENT MAINTENANCE MEASURES.
<br />PERMITS
<br />THE FOLLOWING PERMITS APPLY TO THIS PROJECT:
<br />NOTE: IF THE 25' BUFFERS ARE MAINTAINED FORM THE WETLANDS, ADDITIONAL PERMITS WILL NOT BE
<br />REQUIRED.
<br />LOCATION OF SWPPP REQUIREMENTS
<br />THE REQUIRED SWPPP ELEMENTS MAY BE LOCATED IN MANY PLACES
<br />WITHIN THE PLAN SET. PLAN VIEW OF THE GRADING PLAN MEASURES CAN BE FOUND ON C5 - GRADING
<br />PLAN
<br />SWPPP AMENDMENTS
<br />A QUALIFIED INDIVIDUAL MUST COMPLETE ALL SWPPP CHANGES. CHANGES INVOLVING THE USE OF A
<br />LESS STRINGENT BMP MUST INCLUDE A JUSTIFICATION DESCRIBING HOW THE REPLACEMENT BMP IS
<br />EFFECTIVE FOR THE SITE CHARACTERISTICS.
<br />PERMITTEES MUST AMEND THE SWPPP TO INCLUDE ADDITIONAL OR MODIFIED BMPS AS NECESSARY TO
<br />CORRECT PROBLEMS IDENTIFIED OF ADDRESS SITUATIONS WHENEVER THERE IS A CHANGE IN DESIGN,
<br />CONSTRUCTION OPERATION, MAINTENANCE, WEATHER, OR SEASONAL CONDITIONS HAVING A
<br />SIGNIFICANT EFFECT ON THE DISCHARGE OF POLLUTANTS TO SURFACE WATERS OR GROUNDWATER.
<br />PERMITTEES MUST AMEND THE SWPPP TO INCLUDE ADDITIONAL OR MODIFIED BMPS AS NECESSARY TO
<br />CORRECT PROBLEMS IDENTIFIED OR ADDRESS SITUATIONS WHENEVER INSPECTIONS OR
<br />INVESTIGATIONS BY THE SITE OWNER OR OPERATOR, USEPA OR MPCA OFFICIALS INDICATE THE SWPPP
<br />IS NOT EFFECTIVE IN ELIMINATING OR SIGNIFICANTLY MINIMIZING THE DISCHARGE OF POLLUTANTS TO
<br />SURFACE WATERS OR GROUNDWATER OR THE DISCHARGES ARE CAUSING WATER QUALITY STANDARD
<br />EXCEEDANCES OR THE SWPPP IS NOT CONSISTENT WITH THE OBJECTIVES OF A USEPA APPROVED TMDL.
<br />ALL AREAS DISTURBED BY CONSTRUCTION W
<br />SPECIFICATIONS AND WITHIN THE SPECIFIED
<br />OCCUR WHEN THE SITE HAS A UNIFORM VEG
<br />DISTURBED AREA COMPARED TO EXISTING C
<br />PREVENTION AND SEDIMENT CONTROL BMPS
<br />STORM WATER POLLUTION PREVENTION PLAN NARRATIVE - PAGE 1 OF 2
<br />1-MILE
<br />RADIUS
<br />AROUND
<br />PROJECT
<br />HARDWOOD
<br />CREEK
<br />ONEKA
<br />LAKE
<br />WATERS WITHIN 1 MILE RADIUS
<br />NAME OF WATER
<br />BODY
<br />TYPE (LAKE,
<br />RIVER,
<br />WETLAND,
<br />DITCH, ETC)
<br />APPENDIX A
<br />SPECIAL WATER
<br />(YES OR NO)
<br />IMPAIRED
<br />WATER WITHIN 1
<br />MILE OF
<br />PROJECT SITE
<br />(YES OR NO)
<br />APPROVED
<br />TMDL
<br />RECEIVING
<br />WATERS
<br />(YES OR NO)
<br />HARDWOOD CREEK NO YES YES YES
<br />CONTACT INFORMATION
<br />ORGANIZATION CONTACT NAME PHONE
<br />SOUTHWIND HOLDINGS LARRY ALM
<br />ANDERSON ENGINEERING (SWPPP DESIGN)JARED RICHNER*763-412-4000
<br />[CONTRACTOR]
<br />AGENCY TYPE OF PERMIT PERMIT # AND DATES
<br />MINNESOTA POLLUTION
<br />CONTROL AGENCY (MPCA)
<br />NPDES CONSTRUCTION
<br />PERMIT
<br />CITY OF HUGO GRADING PERMIT
<br />CITY OF HUGO BUILDING PERMIT
<br />PROJECT
<br />SITE
<br />PLOTTED:COMM. NO.
<br />DRAWING NO.
<br />----17004
<br />ONEKA PRAIRIE
<br />1 3 6 0 5 1 s t A v e n u e N . #1 0 0
<br />P l y m o u t h , M N 5 5 4 4 1 | a e -m n .c o m
<br />P 7 6 3 .4 1 2 .4 0 0 0 | F 7 6 3 .4 1 2 .4 0 9 0
<br />A n d e r s o n E n g i n e e r i n g o f M i n n e s o t a , L L C
<br />DRAWING TITLE
<br />CHECKED BY:DRAWN:DESIGNED:
<br />ATJRAT
<br />08/09/2022
<br />REVISION LOG
<br />DESCRIPTION OF REVISIONSNO.DATE
<br />SOUTHWIND HOLDINGS, LLC
<br />PRELIMINARY PLAT
<br />51317
<br />ADAM THIELE, PEPRINT NAME:
<br />SIGNATURE:
<br />I HEREBY CERTIFY THAT THIS PLAN, SPECIFICATION, OR
<br />REPORT WAS PREPARED BY ME OR UNDER MY DIRECT
<br />SUPERVISION AND THAT I AM A DULY LICENSED
<br />PROFESSIONAL ENGINEER UNDER THE LAWS OF THE STATE
<br />OF MINNESOTA.
<br />DATE:LICENSE NO.08/09/2022
<br />1 8/19/22 REVISED PER CITY COMMENTS
<br />2 10/31/22 REVISED PER UPDATED DELINEATION
<br />3 11/18/22 REVISED PER CITY COMMENTS
<br />4 11/21/22 STORM SEWER REVISIONS
<br />SWPPP - PG 1
<br />C9
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