Agenda - Planning Commission - 04/24/2025

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GENERAL INFORMATION MINNESOTA'S CONSTRUCTION STORMWATER PERMIT IS AN EXTENSION OF THE NATIONAL POLLUTION DISCHARGE ELIMINATION SYSTEM STORMWATER PROGRAM, WHICH IS PART OF THE FEDERAL CLEAN WATER ACT. REGULATED PARTIES MUST DEVELOP A STORMWATER POLLUTION PREVENTION PLAN (SWPPP). THE SWPPP PROVIDES INFORMATION ON THE EXISTING AND PROPOSED SITE CONDITIONS, CONTROL MEASURES FOR STORMWATER POLLUTION PREVENTION BEFORE, DURING AND AFTER CONSTRUCTION, INSPECTION, MAINTENANCE AND INFORMATION RELATED TO THE PERMANENT STORMWATER MANAGEMENT SYSTEM. THE SWPPP SHALL BE KEPT ON SITE AT ALL TIMES DURING ACTIVE CONSTRUCTION. PROJECT INFORMATION PROJECT NAME: CONVENIENCE STORE 1782 WITH 1-BAY CARWASH PROJECT LOCATION: RAMSEY, ANOKA COUNTY, MINNESOTA PROJECT OWNER: KWIK TRIP, INC. RESPONSIBLE PARTIES THE OWNER MUST IDENTIFY A PERSON KNOWLEDGEABLE AND EXPERIENCED IN THE APPLICATION OF EROSION PREVENTION AND SEDIMENT CONTROL BMP'S WHO WILL OVERSEE THE IMPLEMENTATION OF THE SWPPP, AND THE INSTALLATION, INSPECTION AND MAINTENANCE OF THE EROSION PREVENTION AND SEDIMENT CONTROL BMP'S. SITE MANAGER: NATE BYOM - KWIK TRIP INC. TRAINING DOCUMENTATION: CONSTRUCTION SITE MANAGEMENT (5/31/25 EXPIRATION) - UNIVERSITY OF MN EXISTING SITE CONDITIONS THE SITE IS LOCATED IN THE SOUTHWEST QUADRANT OF THE INTERSECTION OF BUNKER LAKE BOULEVARD AND ARMSTRONG BOULEVARD NW IN RAMSEY, ANOKA COUNTY, MINNESOTA. THE SITE IS BOUNDED ON THE NORTH BY BUNKER LAKE BOULEVARD, ON THE WEST BY FERRET STREET NW, ON THE SOUTH BY UNDEVELOPED GRASSLAND, AND ON THE EAST BY ARMSTRONG BOULEVARD NW. THE SITE IS CURRENTLY UNDEVELOPED GRASSLAND WITH TREES ALONG THE SOUTH PROPERTY LINE. THE PROPOSED SITE BOUNDARY CONSISTS OF 3.350 ACRES. A DRAINAGE BOUNDARY OF 3.474 ACRES WILL BE CONSIDERED FOR THIS ANALYSIS, WHICH INCLUDES RUN-ON FROM THE RIGHT-OF-WAY. THE EXISTING DRAINAGE BOUNDARY CURRENTLY HAS 0.020 ACRES OF IMPERVIOUS SURFACE ONSITE. THE SITE HAS A GENERALLY FLAT TOPOGRAPHY GENERALLY SLOPING TOWARDS THE NORTHWEST OR SOUTHEAST, WITH SLOPES GENERALLY RANGING FROM 0.5% TO 2% OVER THE DEVELOPED AREA. ELEVATIONS AT THE SITE RANGE FROM 870 IN THE CENTER OF THE WESTERN EDGE OF THE SITE, DOWN TO ABOUT 867 IN THE NORTHWEST AND SOUTHEAST CORNERS OF THE SITE. STORMWATER FROM THE SITE FLOWS TO THE CULVERT IN THE NORTHWEST CORNER OF THE SITE, OR TO A DITCH ALONG THE SOUTH SIDE OF THE SITE THAT FLOWS EAST. ANY STORMWATER LEAVING THE SITE ULTIMATELY FLOWS TO THE PROPERTY EAST OF THE SITE, ACROSS ARMSTRONG BOULEVARD. PROPOSED SITE CONDITIONS KWIK TRIP, INC. PLANS ON DEVELOPING THE SITE INTO A CONVENIENCE STORE WITH A SINGLE BAY CARWASH AND ASSOCIATED PARKING AND DRIVE AREAS. DURING CONSTRUCTION, APPROXIMATELY 3.3 ACRES WILL BE DISTURBED. AFTER THE SITE IS CONSTRUCTED, THE DRAINAGE BOUNDARY WILL CONTAIN APPROXIMATELY 1.832 ACRES OF IMPERVIOUS SURFACE, WHICH IS AN INCREASE OF 1.812 ACRES. STORMWATER FROM THE AREA WEST OF THE WEST FRONT OF THE STATION STORE WILL BE COLLECTED IN STORM SEWER AND WILL BE DIRECTED TO A STORMWATER POND. THE POND WILL OUTLET TO THE CATCH BASIN LOCATED EAST OF THE SITE BASINS ON ARMSTRONG BOULEVARD NW. THIS CATCH BASIN FLOWS TO THE RAMSEY TRUNK SEWER SYSTEM. ALL OTHER DEVELOPED PORTIONS OF THE SITE, WILL BE COLLECTED IN STORM SEWER AND ROUTED TO AN INFILTRATION BASIN, LOCATED IN THE SOUTHEASTERN PORTION OF THE SITE. THE INFILTRATION BASIN WILL OUTLET TO THE SAME LOCATION AS THE STORMWATER POND. A ONE-WAY CHECK VALVE WILL BE PLACED ON THE OUTLET OF THE INFILTRATION BASIN TO PREVENT OUTFLOW FROM THE STORMWATER POND FROM FLOWING INTO THE INFILTRATION BASIN. THE USE OF SEPARATE BASINS FOR STORMWATER CONTROL IS NECESSARY DUE TO RESTRICTIONS ON INFILTRATING RUNOFF FROM FUELING AREAS. INFILTRATION IS THE PREFERRED METHOD FOR MANAGING WATER QUALITY AND VOLUME CONTROL, THEREFORE THE MAXIMUM PRACTICAL AMOUNT OF RUNOFF HAS BEEN DIRECTED TO THE INFILTRATION BASIN, WHILE RUNOFF THAT CANNOT BE INFILTRATED IS DIRECTED TO THE STORMWATER POND. WHILE A FILTRATION BASIN WOULD PROVIDE BETTER WATER QUALITY THAN A NURP POND, THE OUTLET ELEVATION FOR THE SITE OF 863.0' IS TOO HIGH TO ALLOW FOR THE OUTLETTING OF A FILTRATION BASIN DRAINTILE, SO A NURP POND WAS USED INSTEAD. SOIL INFORMATION IN OCTOBER OF 2024, BRAUN INTERTEC DRILLED TEN SOIL BORINGS TO APPROXIMATE NEAR SURFACE SOILS. THE BORINGS INDICATE THAT NEAR SURFACE SOILS CONSIST PRIMARILY OF POORLY GRADED SAND AND SILTY SAND. THESE SOILS GENERALLY FALL WITHIN THE HYDROLOGIC SOIL GROUP (HSG) "B". GROUNDWATER WAS FOUND TO BE PRESENT IN ALL OF THE BORINGS, AND WAS GENERALLY AT AN ELEVATION OF 858 TO 860. AN INFILTRATION RATE OF 0.8 IN/HR WAS USED FOR THE INFILTRATION BASIN, WHICH IS CONSISTENT FOR POORLY GRADED SANDS. THE BASIN WILL BE EXCAVATED TO THE POORLY GRADED SAND HORIZON SHOWN ON BORING ST-1 IN APPENDIX D, AND REFILLED WITH POORLY GRADED SAND TO ASSURE AN INFILTRATION RATE OF 0.8 IN/HR. WETLAND CONSIDERATIONS THERE ARE NO KNOWN WETLANDS ONSITE. STORMWATER RECEIVING WATERS ANY STORMWATER LEAVING THE SITE ULTIMATELY FLOWS TO THE PROPERTY EAST OF THE SITE, ACROSS ARMSTRONG BOULEVARD. SPECIAL/IMPAIRED WATER CONSIDERATIONS THE MISSISSIPPI RIVER IS LOCATED APPROXIMATELY 0.9 MILES SOUTH OF THE SITE AND IS ALSO AN IMPAIRED WATER. ADDITIONAL BMPS INCLUDE: IMMEDIATE STABILIZATION OF EXPOSED SOIL AREAS, AND COMPLETE STABILIZATION WITHIN SEVEN (7) CALENDAR DAYS AFTER CONSTRUCTION ACTIVITY IN THAT PORTION OF THE SITE TEMPORARILY OR PERMANENTLY CEASES, AND TEMPORARY SEDIMENTATION BASINS FOR COMMON DRAINAGE AREAS OF FIVE (5) ACRES OR MORE. STORMWATER MANAGEMENT PLAN THE CITY OF RAMSEY REQUIRES SITES TO PROVIDE A VOLUME CONTROL OF 1-INCH OF RUNOFF FROM NEWLY CREATED IMPERVIOUS SURFACES. THE PROPOSED SITE WILL CREATE APPROXIMATELY 1.812 ACRES OF IMPERVIOUS SURFACE. THE VOLUME CONTROL REQUIREMENT FOR THE IMPERVIOUS SURFACE AREA IS 0.151 ACRE-FEET. THE ONSITE INFILTRATION BASIN PROVIDES VOLUME CONTROL OF 0.309 ACRE-FEET. THE LOWER RUM RIVER WATERSHED MANAGEMENT ORGANIZATION (LRRWMO) REQUIRES THAT A VOLUME EQUAL TO ONE INCH OF RUNOFF FROM ALL IMPERVIOUS SURFACES ON THE SITE SHALL BE INFILTRATED ON -SITE. THE PROPOSED SITE WILL CREATE APPROXIMATELY 1.812 ACRES OF IMPERVIOUS SURFACE. THE VOLUME CONTROL REQUIREMENT FOR THE IMPERVIOUS SURFACE AREA IS 0.151 ACRE-FEET. THE ONSITE INFILTRATION BASIN PROVIDES VOLUME CONTROL OF 0.309 ACRE-FEET. THE CITY OF RAMSEY REQUIRES THAT NEW CONSTRUCTION SHALL HAVE A NO NET INCREASE IN TSS AND TP CONCENTRATIONS. A MIDS MODEL WAS PREPARED TO DETERMINE EXISTING AND PROPOSED TOTAL SUSPENDED SOLIDS (TSS) AND TOTAL PHOSPHORUS (TP) LOADING. THE EVENT MEAN CONCENTRATION (EMC) FOR TP IN THE EXISTING CONDITION IS 0.19 MG/L, WHICH IS THE VALUE FOR "OPEN SPACE" RECOMMENDED BY THE MINNESOTA STORMWATER MANUAL. THE EMC FOR TP IN THE PROPOSED CONDITION IS 0.20 MG/L, WHICH IS THE VALUE FOR "COMMERCIAL" RECOMMENDED BY THE MINNESOTA STORMWATER MANUAL. THE MIDS MODEL PREDICTS THAT THE EXISTING CONDITIONS WILL PRODUCE TSS AND TP VALUES OF 238.3 LBS AND 0.831 LBS, RESPECTIVELY. THE MIDS MODEL PREDICTS THAT THE PROPOSED STORMWATER SYSTEM WILL PRODUCE TSS AND TP VALUES OF 114.8 LBS AND 0.775 LBS, RESPECTIVELY. TP AND TSS VALUES FOR THE PROPOSED SYSTEM MEETS AND EXCEEDS THE CITY OF RAMSEY REQUIREMENTS FOR TSS AND TP. THE LRRWMO REQUIRES THAT STORMWATER TREATMENT FACILITIES SHALL PROVIDE AT LEAST AN ANNUAL REMOVAL EFFICIENCY OF 60% TP AND AT LEAST AN ANNUAL REMOVAL EFFICIENCY OF 90% TSS. A MIDS MODEL WAS PERFORMED FOR THE RUNOFF TO THE PROPOSED BASINS IN THE PROPOSED CONDITION. RUNOFF THAT BYPASSES THE BASINS WERE EXCLUDED, SINCE THOSE AREAS CANNOT BE DIRECTED TOWARDS THE BASINS AND THEREFORE SKEW THE REMOVAL EFFICIENCY OF THE BASINS. THE MIDS MODEL INDICATES THAT THE REMOVAL EFFICIENCY FOR THE BASINS IS 75% FOR TP AND 90% FOR TSS, WHICH MEETS OR EXCEEDS THE LRRWMO REQUIREMENT. PRETREATMENT FOR THE STORMWATER TREATMENT FACILITIES WILL BE PROVIDED BY SUMP MANHOLES EQUIPPED WITH SNOUT OIL/WATER/DEBRIS SEPARATORS. PRIOR TO START OF CONSTRUCTION THE FOLLOWING STORMWATER POLLUTION PREVENTION MEASURES SHALL BE IMPLEMENTED PRIOR TO CONSTRUCTION. REFER TO GRADING AND EROSION CONTROL PLANS FOR LOCATIONS. 1. SILT FENCE SILT FENCE SHALL BE INSTALLED AT THE LIMIT OF GRADING ON ANY FILL SLOPE. ADDITIONAL SILT FENCE MAY BE REQUIRED IN CUT SLOPE AREAS. SILT FENCE SHALL ALSO BE INSTALLED AROUND ANY INFILTRATION/FILTRATION PRACTICE. 2. ROCK CONSTRUCTION ENTRANCE ROCK CONSTRUCTION ENTRANCES SHALL BE INSTALLED AT THE FIELD ENTRANCES TO THE SITE. 3. CATCH BASINS ALL CATCH BASINS SHALL BE PROTECTED WITH INLET PROTECTION DEVICES APPROVED BY THE LOCAL GOVERNING UNIT. THESE SHALL INCLUDE, BUT ARE NOT LIMITED TO, WIMCO PROTECTION DEVICES, INFRASAFE PROTECTION DEVICES, FILTER FABRIC, BIO ROLLS AND STRAW BALES. DURING CONSTRUCTION THE FOLLOWING STORMWATER POLLUTION PREVENTION MEASURES SHALL BE IMPLEMENTED DURING CONSTRUCTION. REFER TO GRADING AND EROSION CONTROL 1. PHASED GRADING TO THE EXTENT POSSIBLE, GRADING SHALL BE PHASED DURING SITE CONSTRUCTION. 2. TRACKED SEDIMENT ANY SEDIMENT TRACKED FROM THE SITE ONTO THE DETECTION. THE ROCK CONSTRUCTION ENTRANCE SHALL SEDIMENT. SWEEPER MUST BE AVAILABLE ON -SITE WITHIN PLANS FOR LOCATIONS. TO MINIMIZE THE AMOUNT OF DISTURBED AREAS STREET SHALL BE REMOVED IMMEDIATELY UPON BE INSPECTED AND REPAIRED IF INUNDATED WITH 3 HOURS NOTICE FROM THE CITY. 3. STOCKPILES STOCKPILES SHALL BE PLACED IN AN AREA THAT WILL MINIMIZE THE NEED FOR RELOCATION. IF A STOCKPILE WILL REMAIN IN PLACE FOR AN EXTENDED PERIOD OF TIME, STABILIZATION MEASURES SHALL BE IMPLEMENTED, INCLUDING BUT NOT LIMITED TO, SEEDING AND SILT FENCING. TEMPORARY STOCKPILES MUST HAVE SILT FENCE OR OTHER EFFECTIVE SEDIMENT CONTROLS AND CANNOT BE PLACED IN SURFACE WATERS, INCLUDING STORMWATER CONVEYANCES SUCH AS CURB AND GUTTER SYSTEMS, CONDUITS OR DITCHES. 4. TOPSOIL UPON GRADING COMPLETION, A MINIMUM OF 4 INCHES OF TOPSOIL SHALL BE PLACED OVER ALL DISTURBED AREAS, EXCLUDING PROPOSED STREETS AND PARKING AREAS. 5. RESTORATION ALL DISTURBED AREAS NOT ACTIVELY WORKED SHALL BE RESTORED WITH SEED AND MULCH, EROSION CONTROL BLANKET AND/OR SOD WITHIN 7 DAYS. 6. SLOPES IN ORDER TO MAINTAIN SHEET FLOW AND MINIMIZE RILLS AND/OR GULLIES, THERE SHALL BE NO UNBROKEN SLOPE LENGTH OF GREATER THAN 75 FEET FOR SLOPES WITH A GRADE OF 3:1 OR STEEPER. 7. DRAINAGE DITCHES THE NORMAL WETTED PERIMETER OF ANY TEMPORARY OR PERMANENT DRAINAGE DITCH THAT DRAINS WATER FROM THE SITE, OR DIVERTS WATER AROUND THE SITE, 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 A SURFACE WATER. 8. PIPE OUTLETS PIPE OUTLETS MUST BE PROVIDED WITH TEMPORARY OR PERMANENT ENERGY DISSIPATION WITHIN 24 HOURS OF CONNECTION TO A SURFACE WATER. 9. CATCH BASINS ALL CATCH BASINS SHALL BE PROTECTED WITH INLET PROTECTION DEVICES APPROVED BY THE LOCAL GOVERNING UNIT. THESE SHALL INCLUDE, BUT ARE NOT LIMITED TO, WIMCO PROTECTION DEVICES, INFRASAFE PROTECTION DEVICES, FILTER FABRIC, BIO ROLLS AND STRAW BALES. 10. DUST CONSTRUCTION DUST SHALL BE CONTAINED TO THE EXTENT POSSIBLE. IF THE SITE BECOMES EXCESSIVELY DUSTY, APPROPRIATE MEASURES SHALL BE TAKEN TO REDUCE DUST BEING TRANSPORTED FROM THE SITE. DUST CONTROL MEASURES INCLUDE, BUT ARE NOT LIMITED TO, WATERING AND CALCIUM CHLORIDE APPLICATION. 11. DEWATERING DEWATERING ACTIVITIES SHALL BE CONDUCTED WITH AND APPROVED BY THE LOCAL GOVERNING UNIT. IF THERE WILL BE ANY DEWATERING OR BASIN DRAINING THAT MAY HAVE TURBID OR SEDIMENT LADEN DISCHARGE, THE WATER MUST BE DISCHARGED TO A TEMPORARY OR PERMANENT SEDIMENTATION BASIN ON THE PROJECT SITE WHENEVER POSSIBLE. APPROPRIATE BMPS SHALL BE USED FOR EROSION AND SEDIMENT CONTROL AND ENERGY DISSIPATION. 12. CONSTRUCTION MATERIALS AND DEBRIS CONSTRUCTION MATERIALS SHALL BE STORED IN AN ORDERLY MANNER AND IN AN AREA THAT WILL MINIMIZE CONFLICTS WITH OTHER CONSTRUCTION ACTIVITIES. CONSTRUCTION DEBRIS SHALL BE CONTAINED IN DUMPSTERS AND REMOVED FROM THE SITE AS NECESSARY. 13. CHEMICALS CHEMICALS SHALL BE STORED IN A SAFE AREA IN SEALED CONTAINERS WITH THE ORIGINAL LABELING AND MATERIAL SAFETY DATA SHEETS AVAILABLE. 14.SPILLS AND CONTAMINATION IF FUEL, OIL OR A HAZARDOUS CHEMICAL IS SPILLED OR DETECTED DURING CONSTRUCTION ACTIVITIES, ALL APPROPRIATE AGENCIES SHALL BE IMMEDIATELY NOTIFIED, INCLUDING, BUT NOT LIMITED TO, THE MINNESOTA DUTY OFFICER AT 800-422-0798. 15.CONCRETE WASHOUT AREA PERMITTEES MUST PROVIDE EFFECTIVE CONTAINMENT FOR ALL LIQUID AND SOLID WASTES GENERATED BY WASHOUT OPERATIONS (E.G., CONCRETE, STUCCO, PAINT, FORM RELEASE OILS, CURING COMPOUNDS AND OTHER CONSTRUCTION MATERIALS) RELATED TO THE CONSTRUCTION ACTIVITY. PERMITTEES MUST PREVENT LIQUID AND SOLID WASHOUT WASTES FROM CONTACTING THE GROUND AND MUST DESIGN THE CONTAINMENT SO IT DOES NOT RESULT IN RUNOFF FROM THE WASHOUT OPERATIONS OR AREAS. PERMITTEES MUST PROPERLY DISPOSE LIQUID AND SOLID WASTES IN COMPLIANCE WITH MPCA RULES. PERMITTEES MUST INSTALL A SIGN INDICATING THE LOCATION OF THE WASHOUT FACILITY. POST CONSTRUCTION WHEN THE SITE HAS BEEN COMPLETELY CONSTRUCTED, THE SITE MUST UNDERGO FINAL STABILIZATION. FINAL STABILIZATION OCCURS WHEN ALL OF THE GRADING, INFRASTRUCTURE AND BUILDING ACTIVITIES HAVE BEEN COMPLETED. TO ACHIEVE FINAL STABILIZATION, THE FOLLOWING MEASURES SHALL BE COMPLETED. 1. ALL DISTURBED AREAS WITHOUT PERMANENT IMPERVIOUS SURFACES SHALL BE STABILIZED BY A UNIFORM PERENNIAL VEGETATIVE COVER. AREAS NOT REQUIRING SOD OR EROSION CONTROL BLANKET SHALL BE SEEDED AND MULCHED. 2. SEDIMENT FROM CONVEYANCES AND TEMPORARY SEDIMENTATION BASINS THAT ARE TO BE USED AS PERMANENT WATER QUALITY MANAGEMENT BASINS SHALL BE CLEANED OUT. SEDIMENTATION BASINS SHALL BE SUFFICIENTLY CLEANED OUT TO RETURN THE BASIN TO DESIGN CAPACITY. SEDIMENT MUST BE STABILIZED TO PREVENT IT FROM BEING WASHED BACK INTO THE BASIN OR CONVEYANCES DISCHARGING OFF -SITE OR TO SURFACE WATERS. 3. WHEN STABILIZED VEGETATION HAS BEEN ESTABLISHED OVER 70 PERCENT OF THE PERVIOUS SURFACE AREA, ALL SYNTHETIC TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED. THIS INCLUDES, BUT IS NOT LIMITED TO, SILT FENCE, TREE FENCE AND CATCH BASIN INLET PROTECTION DEVICES. SWPPP DRAWING UPDATES UPDATE SWPPP DRAWING FOR LOCATIONS OF CONSTRUCTION DUMPSTER, PORTABLE TOILET, EQUIPMENT STAGING AREA(S), FUELING AREA(S), ETC. WHEN THEIR RESPECTIVE LOCATIONS ARE KNOWN. INSPECTIONS & RECORD KEEPING STORMWATER POLLUTION PREVENTION INSPECTIONS SHALL OCCUR ONCE EVERY SEVEN (7) DAYS DURING ACTIVE CONSTRUCTION AND WITHIN 24 HOURS AFTER A RAINFALL EVENT GREATER THAN 0.5 INCHES IN 24 HOURS. INSPECTION REPORTS SHALL BE SENT TO THE CITY INSPECTOR FOLLOWING EVERY INSPECTION EVENT. INSPECTIONS MAY BE CEASED DURING FROZEN GROUND CONDITIONS. WHERE WORK HAS BEEN SUSPENDED DUE TO FROZEN GROUND CONDITIONS, THE REQUIRED INSPECTIONS AND MAINTENANCE MUST TAKE PLACE WITHIN 24 HOURS AFTER RUNOFF OCCURS AT THE SITE OR PRIOR TO RESUMING CONSTRUCTION, WHICHEVER COMES FIRST. DURING THE COURSE OF CONSTRUCTION, IT MAY BE DETERMINED THAT ADDITIONAL STORMWATER POLLUTION PREVENTION MEASURES MAY BE NEEDED, OR CERTAIN MEASURES ARE NOT PRACTICAL TO INSTALL. IN THESE CASES, AN AMENDMENT TO THE SWPPP SHALL BE MADE, AND SUPPORTING REASONS SHALL BE DOCUMENTED IN THE SWPPP. 1. THE EXCAVATOR IS RESPONSIBLE FOR ALL EROSION CONTROL INSPECTIONS. 2. RECORD NAME OF INSPECTOR AND DATE AND TIME OF INSPECTION. 3. RECORD RAINFALL AMOUNT SINCE MOST RECENT INPSECTION. 4. INSPECT ROCK CONSTRUCTION ENTRANCES FOR SEDIMENTATION. INSPECT ADJACENT STREETS FOR SEDIMENT TRACKING. 5. INSPECT SITE FOR EXCESSIVE EROSION AND SEDIMENT ACCUMULATION. A. INSPECT SILT FENCE AND OTHER TEMPORARY EROSION AND SEDIMENT CONTROL DEVICES FOR EROSION, SEDIMENTATION AND MALFUNCTIONING. B. INSPECT FLARED END SECTIONS FOR EROSION AND SEDIMENTATION. C. INSPECT PONDS, INFILTRATION BASINS, TEMPORARY SEDIMENTATION BASINS AND ALL OTHER BMP'S FOR EROSION AND SEDIMENTATION. D. INSPECT SURFACE WATERS, INCLUDING DRAINAGE DITCHES AND CONVEYANCE SYSTEMS FOR EVIDENCE OF SEDIMENT BEING DEPOSITED BY EROSION. 6. INSPECT SITE AND ADJACENT PROPERTIES FOR CONSTRUCTION DEBRIS, TRASH AND SPILLS. 7. INSPECT STABILIZED AREAS FOR EROSION. 8. RECORD RECOMMENDED REPAIRS, MAINTENANCE AND/OR REPLACEMENTS REQUIRED TO ENSURE EROSION AND SEDIMENTATION CONTROL MEASURES ARE SUFFICIENT. 9. RECORD RECOMMENDED AMENDMENTS TO THE SWPPP. 10. RECORD REPAIRS, MAINTENANCE AND/OR REPLACEMENTS THAT WERE COMPLETED SINCE THE LAST INSPECTION. NOTE: FOR AREAS THAT HAVE UNDERGONE FINAL STABILIZATION, INSPECTIONS CAN BE REDUCED TO ONCE PER MONTH. MAINTENANCE THE OWNER/CONTRACTOR IS RESPONSIBLE FOR THE OPERATION, INSPECTION AND MAINTENANCE OF ALL STORMWATER POLLUTION PREVENTION MEASURES FOR THE DURATION OF THE PROJECT. THE FOLLOWING GUIDELINES SHALL BE USED TO DETERMINE NECESSARY REPAIRS, MAINTENANCE AND/OR REPLACEMENT OF THE EROSION AND SEDIMENTATION CONTROL MEASURES. 1. ROCK CONSTRUCTION ENTRANCES SHALL BE REPAIRED OR REPLACED IF THE ROCK BECOMES INUNDATED WITH SEDIMENT AND/OR EXCESSIVE SEDIMENT IS BEING TRACKED FROM THE SITE. SEDIMENT TRACKED ONTO ADJACENT STREETS SHALL BE REMOVED. MEASURES SHALL BE TAKEN IMMEDIATELY UPON DISCOVERY. 2. SILT FENCE SHALL BE REPAIRED OR REPLACED WHEN SEDIMENT REACHES 1/3 THE HEIGHT OF THE SILT FENCE, THE SILT FENCE IS DAMAGED AND/OR THE SILT FENCE BECOMES NONFUNCTIONAL. MEASURES SHALL BE TAKEN WITHIN 24 HOURS OF DISCOVERY. 3. CATCH BASIN INLET PROTECTION DEVICES SHALL BE CLEANED WHEN SEDIMENT REACHES THE HEIGHT OF THE SEDIMENT TRAP AND/OR REPAIRED OR REPLACED IF THE DEVICE BECOMES NONFUNCTIONAL. MEASURES SHALL BE TAKEN WITHIN 72 HOURS OF DISCOVERY. 4. FLARED END SECTIONS SHALL BE CLEANED IF DEBRIS IS RESTRICTING FLOW OR IF SEDIMENT HAS ACCUMULATED AT THE OUTLET. IF A FLARED END SECTION BECOMES NONFUNCTIONAL OR DAMAGED, IT SHALL BE REPAIRED OR REPLACED. MEASURES SHALL BE TAKEN WITHIN 72 HOURS OF DISCOVERY. 5. IF SEDIMENT IS OBSERVED OFF -SITE OR NEAR SURFACE WATERS, THE SOURCE OF SEDIMENT SHALL BE DETECTED AND ADDITIONAL MEASURES SHALL BE IMPLEMENTED. THE PERMITEE(S) SHALL COORDINATE SEDIMENT RETRIEVAL FROM SURFACE WATERS WITH ALL APPROPRIATE AGENCIES. MEASURES SHALL BE TAKEN WITHIN 7 DAYS OF DISCOVERY. 6. PONDS, INFILTRATION BASINS, TEMPORARY SEDIMENTATION BASINS AND ALL OTHER BMP'S SHALL BE CLEANED IF DEBRIS IS PRESENT AND/OR EXCESSIVE SEDIMENTATION HAS OCCURRED. TEMPORARY AND PERMANENT SEDIMENTATION BASINS MUST BE DRAINED AND THE SEDIMENT REMOVED WHEN SEDIMENT HAS FILLED THE BASIN TO 1/2 THE STORAGE VOLUME. NO SEDIMENT SHALL BE ALLOWED TO ACCUMULATE IN INFILTRATION BASINS. MEASURES SHALL BE TAKEN WITHIN 72 HOURS OF DISCOVERY. NOTICE OF TERMINATION THE PERMITEE(S) MUST SUBMIT A NOTICE OF TERMINATION (NOT) TO THE MPCA WITHIN 30 DAYS AFTER FINAL STABILIZATION IS COMPLETE, OR ANOTHER OWNER/OPERATOR (PERMITEE) HAS ASSUMED CONTROL OVER ALL AREAS OF THE SITE THAT HAVE NOT UNDERGONE FINAL STABILIZATION. QUANTITIES THE FOLLOWING TABLE PROVIDES ESTIMATED QUANTITIES FOR STORMWATER POLLUTION PREVENTION THROUGHOUT THE PROJECT. ITEM UNIT ESTIMATED QUANTITY ROCK ENTRANCE EA. 1 SILT FENCE L.F. 1,990 INLET PROTECTION EA. 17 TURF ESTABLISHMENT AC. 1.7 SWPPP DESIGN CERTIFICATION I, Dan Wilke, hereby certify that SWPPP INSTALLER CERTIFICATION I hereby certify that I have completed Installer SWPP- Erosion and Stormwater Management Certification Program signed SWPPP INSPECTOR CERTIFICATION I hereby certify that I have completed Inspector 51/V17- Erosion and Stormwater Management Certification Program signed I have completed designer SWPP- Erosion and Stormwater Management Certification Program My certification expires May 2026 expiration expiration KwIK TRIP KwIK Srfra KWIK TRIP, Inc. P.O. BOX 2107 1626 OAK STREET LA CROSSE, WI 54602-2107 PH. (608) 781-8988 FAX (608) 781-8960 0xxCARLSON ENCiINEERINt 3890 PHEASANT RIDGE DRIVE NE, SUITE 100, BLAINE, MN 55449 TEL 763.489.7900 \ FAX 763.489.7959 CARLSON-ENGINEERING.COM I hereby certify that this plan, specification or report was prepared by me or under my direct supervision and that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota. Name: Daniel J. Wilke, P.E. Signature: 2./2a2, Date: 01/30/25 License #:53182 EROSION CONTROL NOTES EORI VASI kRMS # DATE DESCRIPTION 03/10/25 Per Owner Comments 04/08/25 Per City Comments DRAWN BY DJW SCALE GRAPHIC PROJ. NO. 11224-00 DATE 2025-01-30 SHEET 1782 C601