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GENERAL PROJECT INFORMATION
<br />PROJECT LOCATION AND NARRATIVE:
<br />THIS PROJECT CONSISTS OF A 31 LOT SINGLE FAMILY SUBDIVISION IN ELK RIVER, MN THE 51TE Is LOCATED
<br />NEAR LONGITUDE-935911, LATITUDE 45. 3255. THE SITE IS ACCESSED FROM YORK STREET NW AND 195TH
<br />AVENUE NW
<br />CONSTRUCTION ACTIVITIES INCLUDE GRADING, UTILITY INSTALLATION, AGGREGATE & BITUMINOUS PLACEMENT,
<br />CURB AND GUTTED,, SIDEWALK AND BITUMINOUS TRAIL CONSTRUCTION, STORM SEWER INSTALLATION,
<br />INFILTRATION BASIN CONSTRUCTION. AND HOMEBUDDING.
<br />CONSTRUCTION IS PLANNED TO BEGIN SUMMER OF 2020 AND HOMEBUILDING IS ANTICIPATED TO EXTEND
<br />INTO 2022.
<br />RESPONSIBLE PARTIES
<br />CONTRACTOR MUST BE TRAINED FOR BOTH CONSTRUCTION INSTALLER AND SITE MANAGEMENT PER
<br />REOUIREMENTS OF THE PERMIT, PART IILF
<br />BENZINGER PROPERTIES INC. JEFF BENZINGER 763-428-3039
<br />OWNER CONTACT PERSON PHONE
<br />OTTO ASSOCIATES INC, CARA SCHWAHN OTTO 763-632-4727
<br />PLAN PREPARED CONTACT PERSON PHONE
<br />TRAINING: 1112912018 (EXPIRES 2022) U OF MN CERTIFICATION - DESIGN OF CONSTRUCTION SWPPP
<br />312912017 (EXPIRES 2020) U OF MN CERTIFICATION - SITE MANAGEMENT
<br />CONTRACTOR (RESPONSIBLE FOR CONTACT PERSON PHONE
<br />INSTALLATION & INSPECTION)
<br />CITY OF ELK RIVER BRANDON WISNER 763-635-1054
<br />PARTY RESPONSIBLE FOR LONG TERM 0&M OF CONTACT PERSON PHONE
<br />PERMANENT STORMWATER MANAGEMENT SYSTEM
<br />PROJECT AREAS'
<br />TOTAL PROJECT SIZE (DISTURBED AREA) = 15.0 ACRES
<br />EXISTING AREA OF IMPERVIOUS SURFACE = 0.0 ACRES
<br />POST -CONSTRUCTION AREA OF IMPERVIOUS SURFACE = 4, Z ACRES
<br />TOTAL NEW IMPERVIOUS SURFACE AREA CREATED = 4, Z ACRES
<br />RECEIVING WATERS
<br />SURFACE WATERS AND WETLANDS THAT WILL RECEIVE STORM WATER RUNOFF FROM THE SITE AND ARE
<br />WITHIN ONE (1) MILE OF THE SITE ARE INDICATED WITH DIRECTION ARROW ON THE SWPPP PLAN SHEET
<br />AND ARE LISTED BELOW
<br />NAME OF WATER BODY IMPAIRED WATER
<br />UNNAMED WETLAND NO
<br />THE OWNER SHALL SUBMIT A NOTICE OF TERMINATION (NOT) AFTER ONE OF THE FOLLOWING HAS BEEN
<br />COMPLETED, WHICHEVER OCCURS FIRST
<br />1. WITHIN 30 DAYS AFTER FINAL STABILIZATION (PERMIT SECTION XG IS COMPLETE,
<br />Z WITHIN 30 DAYS AFTER SELLING OR OTHERWISE LEGALLY TRANSFERRING THE ENTIRE SITE.
<br />3 IF 907 (BY AREA) OF ALL ORIGINALLY PROPOSED CONSTRUCTION ACTIVITY HAS BEEN COMPLETED AND
<br />PERMANENT COVER HAS BEEN ESTABLISHED ON THOSE AREAS
<br />ALTERNATIVELY, THE OWNER MAY SUBMIT A PERMIT MODIFICATION FORM FOR EACH
<br />HOMESUDDER/HOMEOWNER AS LOTS ARE SOLD. THE NEW OWNER/CONTRACTOR SHALL BE RESPONSIBLE
<br />FOR AMENDING THE SWPPP AS NECESSARY TO SPECIFICALLY ADDRESS THEIR WORK AND SUBMIT A NOTICE
<br />OF TERMINATION (NOT) ACCORDING TO THE SAME REQUIREMENTS ABOVE,
<br />CONSTRUCTION ACTIVITY NOTES
<br />ALL CONSTRUCTION ACTIVITIES MUST MEET THE REQUIREMENTS OF THE MPCA S NPDES GENERAL
<br />STORMWATER PERMIT FOR CONSTRUCTION ACTIVITY.
<br />EROSION PREVENTION'
<br />ALL EXPOSED SOIL AREAS RADA STOCKPILES) MUST BE STABILIZED, STABILIZATION MUST BE
<br />INITIATED IMMEDIATELY TO LIMIT SOIL EROSION BUT COMPLETED NO CASE LATER THAN 14 DAYS
<br />AFTER THE CONSTRUCTION ACTIVITY IN THAT PORTION OF THE SITE HAS TEMPORARILY OR
<br />PERMANENTLY CEASED.
<br />TEMPORARY TURF RESTORATION SHALL BE MNDOT SEED MIX 25-121 ® 61 LB/ACRE WITH
<br />MNDOT TYPE I MULCH ® 2 TONS/ACRE (DISC ANCHORED) AND 12-5-70 TYPE 3 FERTILIZER
<br />(350 LBS/ACRE). STABILIZATION MUST BE INITIATED IMMEDIATELY BUT IN NO CASE COMPLETED
<br />LATER THAN 14 DAYS AFTER THE ACTIVITY IN THAT PORTION OF THE SITE HAS TEMPORARILY
<br />OR PERMANENTLY CEASED.
<br />PERMANENT TURF RESTORATION SHALL BE SEED OR SOD (PER HOMEBUILDER). AFTER HOME
<br />CONSTRUCTION,
<br />THE FOLLOWING SHALL BE INSTALLED WITHIN 24 HOURS OF CONNECTION TO SURFACE WATER:
<br />1) ENERGY DISSIPATION UNPRAP) AT ALL OUTLET APRONS
<br />2) STABILIZATION OF THE NORMAL WETTED PERIMETER OF ANY TEMPORARY OR PERMANENT
<br />DRAINAGE SWALES WITHIN 200 OF EDGE OF SITE OR CONNECTION TO SURFACE WATER
<br />SEDIMENT CONTROL PRACTICES
<br />A 50 FOOT NATURAL BUFFER SHALL BE MAINTAINED FROM ALL SURFACE WATERS
<br />ENTERING/EXITING THE SITE SHALL OCCUR ONLY AT ROCK CONSTRUCTION ENTRANCES TO LIMIT
<br />TRACKING OF SEDIMENT ONTO STREETS
<br />SEDIMENT TRACKED ONTO STREETS DURING WORKING HOURS MUST BE RECLAIMED VIA
<br />SCRAPING AND SWEEPING AT END OF EACH WORKING DAY,
<br />TEMPORARY SOIL STOCKPILES SHALL HAVE SILT FENCE OR OTHER EFFECTIVE SEDIMENT
<br />CONTROLS INSTALLED AT THE BASE ON THE DOWNGRADIENT PERIMETER. NO STOCKPILE MAY
<br />BE PLACED IN ANY NATURAL BUFFERS OR SURFACE WATER
<br />IF DEWATERING IS NECESSARY, DISCHARGE SHALL BE TO A TEMPORARY OR PERMANENT
<br />SEDIMENT BASIN IF INFEASIBLE, CONTRACTOR MAY DEWATER TO SURFACE WATERS IF THEY
<br />VISUALLY CHECK TO ENSURE ADEQUATE TREATMENT HAS BEEN OBTAINED AND NUISANCE
<br />CONDITIONS WILL NOT RESULT, NO EROSION OR SCOUR AT THE DISCHARGE POINT SHALL
<br />OCCUR AND WETLAND INUNDATION SHALL BE CHECKED THAT IT DOESN'T CAUSE ADVERSE
<br />IMPACT TO THE WETLAND.
<br />CONSTRUCTION SEQUENCING'
<br />1) PRECONSTRUCTION MEETING
<br />2) INSTALL PERIMETER SILT FENCE & ROCK CONSTRUCTION ENTRANCE,
<br />3) INSTALL DOWNSTREAM INLET PROTECTION TO OFF -SITE CATCH BASINS
<br />4) TOPSOIL STRIP.
<br />5) ROUGH GRADE SITE & STABILIZE DISTURBED AREAS ACCORDING TO THE NPDES PERMIT
<br />TIMELINE LEAVE INFILTRATION BASIN 3' HIGH, INSTALL PERIMETER SILT FENCE AND 510E
<br />SLOPE BLANKET AROUND BA51N TO PROTECT DURING CONSTRUCTION,
<br />6) INSTALL UTILITIES,
<br />T) COMPLETE ROAD CONSTRUCTION.
<br />8) COMPLETE INFILTRATION BASIN CONSTRUCTION & RESTORATION.
<br />9) INSTALL PRIVATE UTILITIES - GAS, ELECTRIC, TELEPHONE, ETC
<br />10) TOPSOIL RESPREAD,
<br />11) STABILIZE DISTURBED AREAS WITHIN PERMIT TIMELINE
<br />12) HOME CONSTRUCTION.
<br />13) RESTORE SITE WITH PERMANENT RESTORATION AS HOMES ARE BUILT
<br />14) REMOVE SEDIMENT CONTROL DEVICES AND SUBMIT NOTICE OF TERMINATION (NOT) TO
<br />MPCA ONCE ALL DISTURBED AREAS HAVE 70% VEGETATIVE DENSITY.
<br />EROSION & SEDIMENT CONTROL BMP ESTIMATED OUANTITES
<br />QUANTITIES LISTED ARE APPROXIMATE. REFER TO CONTRACT DOCUMENTS FOR EXACT
<br />QUANTITIES
<br />BMP EST QUANTITY
<br />SILT FENCE
<br />6,800 IF
<br />ROCK COAST, ENTRANCE
<br />1 EACH
<br />MNDOT SEED MIX 25-121, TYPE 1 MULCH,
<br />12-5-10 TYPE 3 FERTILIZER
<br />8 AC
<br />SEED OR SOD (PER HOMEBUILDER)
<br />8 AC
<br />MNDOT SEED MIX 33-261
<br />1, 700 SY
<br />IN -STREET INLET PROTECTION
<br />18 EACH
<br />GREEN AREA INLET PROTECTION
<br />1 EACH
<br />BIOROLL INLET PROTECTION
<br />1 EACH
<br />MNDOT 3885 CAT 3N EROSION CONTROL BLANKET
<br />6, 560 SY
<br />CL, IV RICRAC
<br />5.8 CY
<br />SEDIMENT TRAP
<br />3 EACH
<br />CONSTRUCTION NOTES
<br />INSPECTIONS AND MAINTENANCE
<br />THE CONTRACTOR MUST HAVE A TRAINED PERSON TO ROUTINELY INSPECT THE CONSTRUCTION SITE
<br />ONCE EVERY SEVEN (Z) DAYS DURING ACTIVE CONSTRUCTION AND WITHIN 24 HOURS OF A RAINFALL
<br />EVENT GREATER THAN 0.5 INCHES IN A 24-HR PERIOD. INSPECTION LOGS SHALL INCLUDE ANY
<br />CORRECTIVE MEASURES TO BE TAKEN. CORRECTIVE MEASURES SHALL BE COMPLETED BY THE END OF
<br />THE NEXT BUSINESS DAY AFTER DISCOVERY UNLESS OTHERWISE SPECIFIED DUE TO FIELD CONDITIONS
<br />THAT PREVENT ACCESS TO THE AREA.
<br />ALL INSPECTIONS MUST BE RECORDED AND RECORDS RETAINED WITH THE SWPPP ON SITE THE
<br />SWPPP, ALONG WITH INSPECTIONS AND MAINTENANCE RECORDS, SHALL BE RETAINED FOR THREE
<br />YEARS AFTER SUBMITTAL OF THE NOTICE OF TERMINATION (NOT).
<br />SILT FENCE MUST BE MAINTAINED WHEN ACCUMULATED SEDIMENT REACHES 112 OF THE DEVICE
<br />HEIGHT. INLET PROTECTION DEVICES SHALL BE CLEANED ON A ROUTINE BASIS SUCH THAT THE
<br />DEVICES ARE FULLY FUNCTIONAL FOR THE NEXT RAINSTORM EVENT REMOVAL AND DISPOSAL OF THE
<br />SEDIMENT SHALL BE INCIDENTAL TO THE CONTRACT,
<br />ROCK CONSTRUCTION ENTRANCE(O SHALL BE CLEANED AND REFRESHED AS NECESSARY TO
<br />CONFORM TO DETAIL,
<br />STREET SWEEPING SHALL BE USED IF VEHICLE TRACKING BMP S ARE NOT ADEQUATE TO PREVENT
<br />SEDIMENT TRACKING ONTO STREETS
<br />POLLUTION PREVENTION'
<br />ALL SOLID WASTE GENERATED BY/COLLECTED FROM THE CONSTRUCTION SITE MUST BE DEPOSITED IN
<br />A DUMPSTER
<br />BUILDING PRODUCTS AND LANDSCAPE MATERIALS SHALL BE PLACED UNDER COVER LIE PLASTIC
<br />SHEETING OR TEMPORARY ROOFS). THIS ALSO APPLIES TO PESTICIDES, FERTILIZER AND TREATMENT
<br />CHEMICALS
<br />NO CONSTRUCTION MATERIAL SHALL BE BURIED OR BURNED ONSTE,
<br />ALL HAZARDOUS MATERIALS (OIL, GASOLINE, FUEL, HYDRAULIC FLUIDS, PAINT, ETC) MUST BE
<br />PROPERLY STORED IN SEALED CONTAINERS TO PREVENT SPILLS, LEAKS OR OTHER DISCHARGE
<br />STORAGE AND DISPOSAL OF HAZARDOUS WASTE MUST BE IN COMPLIANCE WITH MINN. R. CH 7045
<br />CONTRACTOR SHALL ENSURE ADEQUATE SUPPLIES ARE AVAILABLE TO CLEAN UP DISCHARGED
<br />MATERIAL AND THAT AN APPROPRIATE DISPOSAL METHOD IS AVAILABLE FOR RECOVERED SPILLED
<br />MATERIALS CONTRACTOR MUST REPORT AND CLEAN UP SPILLS IMMEDIATELY,
<br />ALL VEHICLES LEFT ONSITE SHALL BE MONITORED FOR LEAKS TO REDUCE THE CHANCE OF
<br />CONTAMINATION.
<br />EXTERNAL WASHING OF TRUCKS OR OTHER CONSTRUCTION VEHICLES. ENGINE DEGREASING, NOR
<br />CONCRETE WASHOUTS ARE ALLOWED ON SITE TRUCKS ARE TO USE SELF-CONTAINED WASHOUT
<br />SYSTEM,
<br />PORTABLE TOILETS SHALL BE SECURED FROM BEING TIPPED OR KNOCKED OVER.
<br />THE CONTRACTOR SHALL MONITOR AND PROVIDE DUST CONTROL CORRECTION WHEN NEEDED. THIS
<br />WORK IS CONSIDERED INCIDENTAL TO THE CONTRACT
<br />ALL SPILLS SHALL BE CLEANED IMMEDIATELY UPON DISCOVERY SPILLS LARGE ENOUGH TO REACH
<br />THE STORM CONVEYANCE SYSTEM SHALL BE REPORTED TO THE MPCA STATE DUTY OFFICER AT
<br />1-800-422-0798.
<br />FINAL STABILIZATION'
<br />THE CONTRACTOR MUST ENSURE FINAL STABILIZATION OF THE SITE PRIOR TO SUBMITTING NOT
<br />SUFFICIENT TOPSOIL (6) SHALL BE PLACED ON DISTURBED AREAS FOR RE -VEGETATION, TOPSOIL
<br />SHALL BE PLACED IN A MANNER TO MINIMIZE COMPACTION (LOW GROUND PRESSURE DOZERS,
<br />TRACKED EQUIPMENT, ETC).
<br />VEGETATIVE COVER MUST CONSIST OF A UNIFORM PERENNIAL VEGETATION WITH A DENSITY OF 709
<br />OF ITS EXPECTED FINAL GROWTH.
<br />PERMANENT STORMWATER TREATMENT SYSTEMS MUST BE CLEANED OF ANY ACCUMULATED SEDIMENT
<br />PRIOR TO SUBMITTNG THE NOT.
<br />ALL TEMPORARY EROSION CONTROL MEASURES AND BMP S MUST BE REMOVED AS PART OF THE
<br />FINAL SITE STABILIZATION,
<br />TRAINING REQUIREMENTS:
<br />CONTRACTOR MUST BE TRAINED FOR BOTH CONSTRUCTION INSTALLER AND SITE MANAGEMENT PER
<br />REQUIREMENTS OF THE PERMIT, PART II1E DOCUMENTATION SHALL BE ADDED TO THE SWPPP
<br />DOCUMENTS LOCATED ONSITE
<br />STORMWATER POLLUTION "'"°
<br />PRESTIGIOUS WOODLAND HILLS FIFTH ADDITION R 19-0318
<br />�aen� TTO BENZINGER PROPERTIES PREVENTION PLAN NARRATIVE
<br />eso m ee..tals,9es`ner :ocs>sez.�ezz ELK RIVER, MN SHEET NO. 9 OF 13 SHEETS ° rF. 2-24-20
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