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6/11(26 <br />1/3/26 <br />ESTIMATED QUANTITIES: <br />PERIMETER SEDIMENT CONTROL: 2650 LIN FEET <br />SILT FENCE, SEDIMENT CONTROL <br />LOGS <br />STORM DRAIN INLET PROTECTION 9 EACH <br />STABILIZED CONSTRUCTION EXIT 2 EACH <br />PERMANENT COVERAGE OF EXPOSED SOIL AREAS: <br />EXPOSED SOIL THAT WILL REMAIN A PERVIOUS SURFACE SHALL BE RESTORED WITH 4" <br />OF TOPSOIL, MN/DOT SEED SOUTHERN BOULEVARD (160 LBS/ACRE), TYPE 1 FERTILIZER <br />(300 LBS/ACRE), AND HYDRAULIC BONDED FIBER MATRIX (3500 LBS/ACRE) OR TYPE 1 <br />DISK ANCHORED MULCH (2 TONS/ACRE). TOPSOIL SHALL NOT CONTAIN MORE THAN 35% <br />SAND. IT WILL BE THE RESPONSIBILITY OF THE CONTRACTOR TO ENSURE THE MATERIAL <br />LISTED ABOVE IS CONSTRUCTED PER THE MnDOT SEEDING MANUAL 2024 EDITION. <br />TEMPORARY EROSION PREVENTION AND BMP DESIGN CONSIDERATIONS: <br />THE FOLLOWING FACTORS WERE ACCOUNTED FOR IN DESIGNING EROSION CONTROL <br />PREVENTION AND BMPS FOR THIS SITE: <br />1. THE EXPECTED AMOUNT, FREQUENCY, INTENSITY, AND DURATION OF PRECIPITATION. <br />2. THE NATURE OF STORMWATER RUNOFF AND RUN-ON AT THE SITE, INCLUDING FACTORS <br />SUCH AS EXPECTED FLOW FROM IMPERVIOUS SURFACES SLOPES, AND SITE DRAINAGE <br />FEATURES. <br />3. THE STORMWATER VOLUME, VELOCITY, AND PEAK FLOWRATES TO MINIMIZE DISCHARGE OF <br />POLLUTANTS IN STORMWATER AND TO MINIMIZE CHANNEL AND STREAMBANK EROSION AND <br />SCOUR IN THE IMMEDIATE VICINITY OF DISCHARGE POINTS. <br />4. THE RANGE OF SOIL PARTICLE SIZES EXPECTED TO BE PRESENT. <br />INSPECTIONS AND MAINTENANCE: <br />1. PERMITTEE MUST PROVIDE A TRAINED PERSON TO INSPECT THE SITE ONCE EVERY 7 <br />DAYS AND WITHIN 24 HOURS AFTER A RAINFALL EVENT GREATER THAT 1/2 INCH IN <br />24 HOURS. <br />2. DURING EACH INSPECTION, INSPECT CONSTRUCTION SITE EXIT LOCATIONS AND REMOVE <br />ACCUMULATED SEDIMENT WITHIN ONE CALENDAR DAY OF DISCOVERY. <br />3. DURING EACH INSPECTION, INSPECT SILT FENCE AND SEDIMENT CONTROL LOGS AND <br />PERFORM MAINTENANCE IF THEY ARE NON-FUNCTIONAL OR WHEN SEDIMENT REACHES <br />1/2 THE HEIGHT OF THE DEVICE. <br />4. DRAIN AND REMOVE SEDIMENT FROM SEDIMENT BASINS WHEN SEDIMENT COLLECTED <br />REACHES 1/2 THE STORAGE VOLUME. <br />5. INSPECT SURFACE WATERS, INCLUDING DRAINAGE DITCHES, FOR SEDIMENT DEPOSITION. <br />IF NECESSARY, OBTAIN APPROVALS FOR REMOVING DELTAS FROM SURFACE WATERS AND <br />REMOVE SEDIMENT AND STABILIZE WITHIN SEVEN CALENDAR DAYS OF DISCOVERY. <br />6. SEND INSPECTION LOG TO CITY INSPECTOR AFTER EVERY 1/2 INCH RAIN EVENT AND <br />WEEKLY. COMPLETE HISTORY OF ALL INSPECTION LOGS MUST BE SENT TO THE CITY <br />AFTER PROJECT COMPLETION. <br />CONSTRUCTION DEBRIS CONTAINMENT: <br />1. ALL WASTE MATERIAL MUST BE CONTAINED IN A COVERED DUMP BOX AND SHALL NOT <br />BE ALLOWED TO SCATTER ON OR OFF SITE. <br />SPECIAL + IMPAIRED WATERS: <br />1. A SUMMARY OF ALL SPECIAL AND IMPAIRED WATERS THAT ARE WITHIN MILE OF THE PROJECT <br />BOUNDARY ARE AS FOLLOWS: <br />NAME OF WATERBODY TYPE <br />MISSISSIPPI RIVER RIVER <br />SPECIAL WATER <br />WITHIN 1 MILE <br />NO <br />DOCUMENT RETENTION: <br />1. THIS SWPPP SHALL REMAIN ON THE PROJECT SITE AT ALL TIMES. <br />2. MAINTAIN RECORDS OF INSPECTIONS, INCLUDING TIME AND DATE. <br />3. NAME OF PERSONS CONDUCTION INSPECTIONS. <br />4. ACCURATE FINDINGS OF INSPECTIONS. <br />5. CORRECTIVE ACTIONS TAKEN. <br />6. DATE OF ALL RAINFALLS GREATER THAN 1/2 INCH IN 24 HOURS, <br />INCLUDING AMOUNT OF RAINFALL IN EACH EVENT. <br />7. DESCRIPTION OF ANY DISCHARGE DISCOVERED DURING INSPECTIONS. <br />8. ANY AMENDMENTS NECESSARY TO THE SWPPP. <br />SWPPP PREPARER INFORMATION: <br />SAM JOCHUM <br />SWPPP TRAINING: DESIGN OF CONSTRUCTION SWPPP <br />CONTRACTORS SWPPP MANAGER(S) INFORMATION: <br />NAME: <br />EMERGENCY PHONE NUMBER: <br />SWPPP TRAINING: <br />EXPIRATION: <br />PERMANENT STORMWATER MANAGEMENT: <br />1. THE PROPOSED IMPERVIOUS AREA WILL BE MORE THAN THE EXISTING IMPERVIOUS AREA. <br />THEREFORE, PERMANENT STORMWATER TREATMENT WILL BE NEEDED ON SITE. <br />INFILTRATION BASIN <br />FILTRATION BASIN <br />WET SEDIMENTATION BASIN <br />REGIONAL BASIN <br />NOT REQUIRED <br />ENVIRONMENTAL CONSIDERATIONS: <br />X <br />X <br />WAS ENVIRONMENTAL REVIEW REQUIRED FOR THIS PROJECT? NO <br />ARE STORMWATER MITIGATION MEASURES REQUIRED FOR THIS NO <br />PROJECT DUE TO ENDANGERED SPECIES REVIEW, ARCHEOLOGICAL <br />OR OTHER REVIEW REQUIREMENT? <br />IS COMPLIANCE WITH TEMPORARY SEDIMENT BASIN INFEASIBLE NO <br />FOR THIS PROJECT? <br />CHEMICAL AND/OR CHEMICAL TREATMENT PROCESS PROPOSED NO <br />FOR ENHANCING SEDIMENTATION PROCESS? <br />IMPAIRED WATER <br />WITHIN 1 MILE <br />YES <br />TYPE OF IMPAIRMENT <br />FECAL COLIFORM, <br />MERCURY IN FISH TISSUE, <br />NUTRIENTS, <br />PCBS IN FISH TISSUE <br />THIS SITE IS WITHIN ONE MILE OF THE MISSISSIPPI RIVER, WHICH IS AN IMPAIRED WATER PER THE MPCA. ALL REQUIREMENTS OF ITEMS 23.9 AND 23.10 OF THE NPDES <br />CONSTRUCTION STORMWATER GENERAL PERMIT APPLY TO THIS SITE. <br />ITEM 23.9 STATES THAT "PERMITTEES MUST IMMEDIATELY INITIATE STABILIZATION OF EXPOSED SOIL AREAS, AS DESCRIBED IN ITEM 8.4, AND COMPLETE THE STABILIZATION <br />WITHIN SEVEN (7) CALENDAR DAYS AFTER THE CONSTRUCTION ACTIVITY IN THAT PORTION OF THE SITE TEMPORARILY OR PERMANENTLY CEASES". <br />ITEM 23.10 STATES THAT "PERMITTEES MUST PROVIDE A TEMPORARY SEDIMENT BASIN AS DESCRIBED <br />AREA WITH FIVE (5) OR MORE ACRES DISTURBED AT ONE TIME". <br />IN SECTION 14 FOR COMMON DRAINAGE LOCATIONS <br />DATE REVISION I hereby certify that this plan, specification, or report was <br />prepared by me or under my direct supervision and that I <br />am a duly Licensed Professional Engineer under the laws <br />of the State of Minnesota. }n <br />SAMUEL G. JOCHUM, P.E. <br />Lic. No 61933 <br />CITY REVIEW NO.1 <br />CITY REVIEW COMMENTS <br />Date 5-18-26 <br />DESIGNED BY: <br />SGJ <br />DRAWN BP <br />IDM <br />CHECKED BY: <br />CJJ <br />THAT SERVE AN <br />Hakanson Anderson <br />Civil Engineers and Land Surveyors <br />3601 Thurston Ave., Anoka, Minnesota 55303 <br />763-427-5860 FAX 763-427-0520 <br />www.hakanson-anderson.com <br />• <br />.020 <br />Ofie <br />Mg5pY: 1:],2fdrpetd on A lancleace (11) x 8.5'7 Meet. <br />SITE SOIL TYPES <br />Hydrologic Soil Group -Anoka County, Minnesota <br />4.120 <br />O a 08 la, la <br />Feet <br />O 100 30 aro ea) <br />t%pprdectlep MkaMeatr Come -canine.: WGSSa Edge bre WM lone ]SNwCS84 <br />sl» Natural Resources <br />Conservation Service <br />404140 <br />Web Soil Survey <br />National Cooperative Soil Survey <br />Hydrologic Soil Group <br />4103103 <br />Map unit symbol Map unit name <br />D20A <br />D67A <br />D67B <br />D67C <br />MC <br />NrD <br />Isan-Isan, frequently ND <br />ponded. complex, 0 to <br />2 percent slopes <br />Hubbard loamy sand, 0 A <br />to 2 percent slopes <br />Hubbard loamy sand, 1 <br />to 6 percent slopes <br />Rating <br />Acres in AOI <br />0-9 <br />Percent of AOI <br />6.6% <br />28 <br />20.4% <br />Hubbard loamy sand, 2 <br />to 12 percent slopes <br />Marsh <br />Nymore loamy coarse <br />sand, 12 to 25 percent <br />slopes <br />Totals for Area of Interest <br />A <br />A <br />ND <br />3.5 <br />1.6 <br />0.3 <br />4.7 <br />13.8 <br />25.3% <br />11.4% <br />1.8% <br />34.5% <br />100.0 % <br />WILDLIFE RESEARCH ADDITION <br />SWPPP <br />CITY OF RAMSEY, MINNESOTA <br />2165.12 <br />