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Architecture
<br />Interior Design
<br />Landscape Architecture
<br />Engineering
<br />Boarman
<br />Kroos
<br />VogelGroupInc.
<br />EOE
<br />License Number
<br />I hereby certify that this plan, specification
<br />or report was prepared by me or under my
<br />direct supervision and that I am a duly
<br />Licensed Professional
<br />under the laws of the State of Minnesota.BKVTB-30x42Engineer
<br />Date
<br />07/30/201924440
<br />Michael J. St. Martin, PE
<br />LOUCKS
<br />7200 Hemlock Lane, Suite 300
<br />Maple Grove, MN 55369
<br />763.424.5505
<br />www.loucksinc.com
<br />PLANNING
<br />CIVIL ENGINEERING
<br />LAND SURVEYING
<br />LANDSCAPE ARCHITECTURE
<br />ENVIRONMENTAL
<br />LOUCKS PROJECT NO. 18373.00
<br />© 2016 BKV Group, Inc. EOE
<br />SHEET NUMBER
<br />SHEET TITLE
<br />DRAWN BY
<br />CHECKED BY
<br />COMMISSION NUMBER
<br />ISSUE # DATE DESCRIPTION
<br />PROJECT TITLE
<br />CONSULTANTS
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<br />CONS
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<br />CERTIFICATION
<br />DATE
<br />OLD HIGHWAY 8
<br />REDEVELOPMENT
<br />18373.00
<br />08/20/2019
<br />AJA
<br />SRT
<br />OWNER/DEVELOPER
<br />02/22/2019 CITY SUBMITTAL
<br />03/27/2019 CITY SUBMITTAL
<br />04/18/2019 WATERSHED
<br />05/31/2019 WATERSHED
<br />06/14/2019 PRICING/PERMIT SET DRAFT
<br />07/30/2019 PERMIT AND PRICING SET
<br />08/20/2019 CITY/WATERSHED
<br />1.THE NATURE OF THIS PROJECT WILL CONSIST OF CONSTRUCTING TWO APARTMENT BUILDINGS, SURFACE PAVEMENTS, AND UTILITIES. IT IS
<br />INTENDED FOR THIS PROJECT TO BE CONSTRUCTED IN ONE PHASE - INCLUDING ALL SITE WORK AND APARTMENT BUILDINGS CONSTRUCTION.
<br />2. THE INTENDED SEQUENCING OF MAJOR CONSTRUCTION ACTIVITIES ARE AS FOLLOWS:
<br />2.1. INSTALL VEHICLE TRACKING BMP
<br />2.2. INSTALL SILT FENCE AROUND SITE
<br />2.3. CLEAR AND GRUB SITE
<br />2.4. STRIP AND STOCKPILE TOPSOIL
<br />2.5. REMOVE PAVEMENTS AND UTILITIES
<br />2.6. CONSTRUCT STORMWATER MANAGEMENT SYSTEM - TO RECEIVE WATER AS TEMPORARY BMP DURING CONSTRUCTION
<br />2.7. ROUGH GRADE SITE
<br />2.8. IMPORT CLEAN FILL FOR REPLACEMENT AND BALANCE
<br />2.9. INSTALL UTILITIES
<br />2.10. INSTALL BUILDING FOUNDATIONS (APARTMENTS AND TOWNHOMES)
<br />2.11. INSTALL CURB AND GUTTER
<br />2.12. INSTALL PAVEMENTS AND WALKS
<br />2.13. FINAL GRADE SITE
<br />2.14. REMOVE ACCUMULATED SEDIMENT FROM STORMWATER SYSTEMS
<br />2.15. INSTALL EROSION CONTROL BLANKET IN ANY SEEDED PORTION OF STORMWATER SYSTEMS
<br />2.16. INSTALL POST CONSTRUCTION SILT FENCE AROUND STORMWATER SYSTEMS
<br />2.17. SEED AND MULCH
<br />2.18. INSTALL BIO-ROLLS OR SILT FENCE AT BACK OF CURB OR PAVEMENT, AS NECESSARY THROUGH APARTMENT AND TOWNHOME
<br />CONSTRUCTION PROCESS
<br />2.19. WHEN ALL CONSTRUCTION ACTIVITY IS COMPLETE AND THE SITE IS STABILIZED, REMOVE SILT FENCE AND RESEED ANY AREAS DISTURBED BY
<br />THE REMOVAL
<br />3. SITE DATA:
<br />AREA OF DISTURBANCE:±8.72 AC
<br />PRE-CONSTRUCTION IMPERVIOUS AREA: ±1.52 AC
<br />POST-CONSTRUCTION IMPERVIOUS AREA: ±5.24 AC
<br />GENERAL SOIL TYPE: SEE GEOTECHNICAL EVALUATION REPORT
<br />EXPECTED RAINFALL: SEE STORMWATER MANAGEMENT PLAN FOR FREQUENCY, INTENSITY, AND DURATION OF
<br />PRECIPITATION
<br />4. THE LOCATION OF AREAS NOT TO BE DISTURBED MUST BE IDENTIFIED WITH FLAGS, STAKES, SIGNS, SILT FENCE, ETC. BEFORE CONSTRUCTION
<br />BEGINS.
<br />5. NO DRAINAGE AREA TO BE MORE THAN FIVE (5) ACRES OF RUNOFF CAUSING THE NEED FOR A TEMPORARY SEDIMENT BASIN.
<br />6. THE LOCATION OF INFILTRATION SYSTEMS SHALL BE CLEARLY MARKED ON SITE AND COMPACTION OF UNDERLYING SOILS SHALL BE AVOIDED.
<br />HEAVY EQUIPMENT, CONSTRUCTION TRAFFIC, CONSTRUCTION STAGING, AND ANY OTHER ACTIVITY RESULTING IN COMPACTION SHALL BE
<br />KEPT OUT OF THE INFILTRATION PRACTICE. HEAVY EQUIPMENT SHALL NOT BE USED TO EXCAVATE INFILTRATION SYSTEMS UNLESS WORK IS
<br />COMPLETED FROM OUTSIDE OF THE INFILTRATION PRACTICE.
<br />7. ALL DISTURBED GROUND LEFT INACTIVE FOR SEVEN (7) OR MORE DAYS SHALL BE STABILIZED BY SEEDING OR SODDING (ONLY AVAILABLE PRIOR
<br />TO SEPTEMBER 15) OR BY MULCHING OR COVERING OR OTHER EQUIVALENT CONTROL MEASURE.
<br />8. RECEIVING WATERS: SURFACE WATERS DRAIN TO THE EXISTING STORM SEWER IN 7TH ST. NW WHICH IS ASSUMED TO FLOW NORTH TO SOUTH
<br />LONG LAKE. THIS LAKE HAS AN EPA APPROVED IMPAIRMENT FOR CHLORIDE.
<br />C1. DURING CONSTRUCTION:
<br />·STABILIZATION OF ALL EXPOSED SOIL AREAS MUST BE INITIATED IMMEDIATELY TO LIMIT SOIL EROSION BUT IN NO CASE COMPLETED LATER
<br />THAN SEVEN (7) DAYS AFTER THE CONSTRUCTION ACTIVITY IN THAT PORTION OF THE SITE HAS TEMPORARILY OR PERMANENTLY CEASED.
<br />·TEMPORARY SEDIMENT BASIN REQUIREMENTS DESCRIBED IN SECTION 14 MUST BE USED FOR COMMON DRAINAGE LOCATIONS THAT SERVE AN
<br />AREA WITH FIVE (5) OR MORE ACRES DISTURBED AT ONE TIME. (IF PRESENT)
<br />C2. POST CONSTRUCTION: THE WATER QUALITY VOLUME THAT MUST BE RETAINED ON SITE BY THE PROJECT’S PERMANENT STORMWATER
<br />MANAGEMENT SYSTEM DESCRIBED IN SECTION 15 SHALL BE ONE AND ONE TENTH (1.1) INCH OF RUNOFF FROM THE NEW IMPERVIOUS
<br />SURFACES CREATED BY THE PROJECT. SEE SECTION 15 FOR MORE INFORMATION ON INFILTRATION DESIGN, PROHIBITIONS AND APPROPRIATE
<br />SITE CONDITIONS.
<br />C3. BUFFER ZONE: THE PERMITTEE(S) SHALL INCLUDE AN UNDISTURBED BUFFER ZONE OF NOT LESS THAN 100 LINEAR FEET FROM THE SPECIAL
<br />WATER (NOT INCLUDING TRIBUTARIES) AND THIS BUFFER ZONE SHALL BE MAINTAINED AT ALL TIMES, BOTH DURING CONSTRUCTION AND AS
<br />A PERMANENT FEATURE POST CONSTRUCTION, EXCEPT WHERE A WATER CROSSING OR OTHER ENCROACHMENT IS NECESSARY TO COMPLETE
<br />THE PROJECT. THE PERMITTEE(S) MUST FULLY DOCUMENT THE CIRCUMSTANCE AND REASONS THAT THE BUFFER ENCROACHMENT IS NECESSARY
<br />IN THE SWPPP AND INCLUDE RESTORATION ACTIVITIES. REPLACEMENT OF EXISTING IMPERVIOUS SURFACE WITHIN THE BUFFER IS ALLOWED
<br />UNDER THIS PERMIT. ALL POTENTIAL WATER QUALITY, SCENIC AND OTHER ENVIRONMENTAL IMPACTS OF THESE EXCEPTIONS MUST BE
<br />MINIMIZED BY THE USE OF ADDITIONAL OR REDUNDANT BMPS AND DOCUMENTED IN THE SWPPP FOR THE PROJECT. (IF PRESENT)
<br />8. ON SLOPES 3:1 OR GREATER MAINTAIN SHEET FLOW AND MINIMIZE RILLS AND/OR GULLIES, SLOPE LENGTHS CAN NOT BE GREATER THAN 75
<br />FEET.
<br />9. ALL STORM DRAINS AND INLETS MUST BE PROTECTED UNTIL ALL SOURCES OF POTENTIAL DISCHARGE ARE STABILIZED.
<br />10. TEMPORARY SOIL STOCKPILES MUST HAVE EFFECTIVE SEDIMENT CONTROL AND CAN NOT BE PLACED IN SURFACE WATERS OR STORM WATER
<br />CONVEYANCE SYSTEMS. TEMPORARY STOCKPILES WITHOUT SIGNIFICANT AMOUNT OF SILT, CLAY, OR ORGANIC COMPOUNDS ARE EXEPMT EX:
<br />CLEAN AGGREGATE STOCK PILES, DEMOLITION CONCRETE STOCKPILES, SAND STOCKPILES.
<br />11. SEDIMENT LADEN WATER MUST BE DISCHARGED TO A SEDIMENTATION BASIN WHENEVER POSSIBLE. IF NOT POSSIBLE, IT MUST BE TREATED
<br />WITH THE APPROPRIATE BMP'S.
<br />12. SOLID WASTES MUST BE STORED, COLLECTED AND DISPOSED OF PROPERLY PER MPCA STANDARDS.
<br />13. EXTERNAL WASHING OF CONSTRUCTION VEHICLES MUST BE LIMITED TO A DEFINED AREA OF THE SITE. RUNOFF MUST BE PROPERLY
<br />CONTAINED.
<br />14. NO ENGINE DEGREASING IS ALLOWED ON SITE.
<br />15. THE OWNER WHO SIGNS THE NPDES PERMIT APPLICATION IS A PERMITTEE AND IS RESPONSIBLE FOR COMPLIANCE WITH ALL TERMS AND
<br />CONDITIONS OF THE PERMIT. THE OPERATOR (CONTRACTOR) WHO SIGNS THE NPDES PERMIT APPLICATION IS A PERMITTEE FOR ALL
<br />APPLICABLE CONSTRUCTION ACTIVITY REQUIREMENTS FOUND IN SECTIONS 3, 4, 6-24 OF THE NPDES PERMIT AND IS JOINTLY RESPONSIBLE
<br />WITH THE OWNER FOR COMPLIANCE WITH THOSE PORTIONS OF THE PERMIT.
<br />16.TERMINATION OF COVERAGE-PERMITTEE(S) WISHING TO TERMINATE COVERAGE MUST SUBMIT A NOTICE OF TERMINATION (NOT) TO THE MPCA.
<br />ALL PERMITTEE(S) MUST SUBMIT A NOT WITHIN 30 DAYS AFTER ONE OR MORE OF THE FOLLOWING CONDITIONS HAVE BEEN MET:
<br />C. FINAL STABILIZATION, PER NPDES PERMIT SECTION 13 HAS BEEN ACHIEVED ON ALL PORTIONS OF THE SITE FOR WHICH THE PERMITTEE IS
<br />RESPONSIBLE.
<br />D. TRANSFER OF OWNERSHIP AS DESCRIBED IN THE PERMIT.
<br />17. INSPECTIONS
<br />A. INITIAL INSPECTION FOLLOWING SILT FENCE INSTALLATION BY CITY REPRESENTATIVE IS REQUIRED.
<br />B. EXPOSED SOIL AREAS: ONCE EVERY 7 DAYS AND WITHIN 24 HOURS FOLLOWING A 0.5" OVER 24 HOUR RAIN EVENT.
<br />C. PERMITTEES MUST OBTAIN RAINFALL AMOUNTS BY EITHER A PROPERLY MAINTAINED RAIN GAUGE INSTALLED ONSITE, A WEATHER
<br />STATION THAT IS WITHIN ONE (1) MILE OF YOUR LOCATION, OR A WEATHER REPORTING SYSTEM THAT PROVIDES SITE SPECIFIC RAINFALL
<br />DATA FROM RADAR SUMMARIES
<br />D. STABILIZED AREAS: ONCE EVERY 30 DAYS
<br />E. FROZEN GROUND: AS SOON AS RUNOFF OCCURS OR PRIOR TO RESUMING CONSTRUCTION.
<br />F. INSPECTION AND MAINTENANCE RECORDS MUST BE RETAINED FOR 3 YEARS AFTER FILING OF THE NOTICE OF TERMINATION AND MUST
<br />INCLUDE: DATE AND TIME OF ACTION, NAME OF PERSON(S) CONDUCTING WORK, FINDING OF INSPECTIONS AND RECOMMENDATIONS
<br />FOR CORRECTIVE ACTION, DATE AND AMOUNT OF RAINFALL EVENTS GREATER THAN 0.5 INCHES IN A 24 HOUR PERIOD.
<br />18. MINIMUM MAINTENANCE
<br />A. SILT FENCE TO BE REPAIRED, REPLACED, SUPPLEMENTED WHEN NONFUNCTIONAL, OR 1/3 FULL; WITHIN 24 HOURS
<br />B. SEDIMENT BASINS DRAINED AND SEDIMENT REMOVED WHEN REACHES 1/2 STORAGE VOLUME. REMOVAL MUST BE COMPLETE WITHIN 72
<br />HOURS OF DISCOVERY.
<br />C. SEDIMENT REMOVED FROM SURFACE WATERS WITHIN (7)SEVEN DAYS
<br />D. CONSTRUCTION SITE EXITS INSPECTED, TRACKED SEDIMENT REMOVED WITH 24 HOURS.
<br />E. PROVIDE COPIES OF EROSION INSPECTION RESULTS TO CITY ENGINEER FOR ALL EVENTS GREATER THAN
<br />12" IN 24 HOURS
<br />19. THE SWPPP, INCLUDING ALL CHANGES TO IT, AND INSPECTIONS AND MAINTENANCE RECORDS MUST BE KEPT AT THE SITE DURING
<br />CONSTRUCTION ACTIVITY BY THE PERMITTEE(S) WHO HAVE OPERATIONAL CONTROL OF THE SITE.
<br />20. OWNER MUST KEEP RECORDS OF ALL PERMITS REQUIRED FOR THE PROJECT, THE SWPPP, ALL INSPECTIONS AND MAINTENANCE, PERMANENT
<br />OPERATION AND MAINTENANCE AGREEMENTS, AND REQUIRED CALCULATIONS FOR TEMPORARY AND PERMANENT STORM WATER
<br />MANAGEMENT SYSTEMS. THESE RECORDS MUST BE RETAINED FOR THREE YEARS AFTER FILING NPDES NOTICE OF TERMINATION.
<br />21. SWPPP MUST BE AMENDED WHEN:
<br />A. THERE IS A CHANGE IN DESIGN, OPERATION, MAINTENANCE, WEATHER OR SEASONAL CONDITIONS THAT HAS A SIGNIFICANT EFFECT ON
<br />DISCHARGE
<br />B. INSPECTIONS INDICATE THAT THE SWPPP IS NOT EFFECTIVE AND DISCHARGE IS EXCEEDING WATER QUALITY STANDARDS.
<br />C. THE BMP'S IN THE SWPPP ARE NOT CONTROLLING POLLUTANTS IN DISCHARGES OR IS NOT CONSISTENT WITH THE TERMS AND
<br />CONDITIONS OF THE PERMIT.
<br />22. CONCRETE WASHOUT AREA
<br />A. CONTRACTOR TO PROVIDE PREFABRICATED CONCRETE WASH-OUT CONTAINER WITH RAIN PROTECTION PER PLAN.
<br />B. CONCRETE WASH-OUT TO BE IDENTIFIED WITH SIGNAGE STATING "CONCRETE WASHOUT AREA DO NOT OVERFILL".
<br />C. CONCRETE WASHOUT WATER NEEDS TO BE PUMPED WITHIN 24 HOURS OF STANDING WATER IN WASHOUT AREA.
<br />23. POLLUTION PREVENTION AND OTHER BMPS
<br />A. PESTICIDES HERBICIDES, FERTILIZERS, TREATMENT CHEMICALS, ETC MUST BE UNDER COVER.
<br />B. HAZARDOUS MATERIALS (OIL, GAS, PAINT, ETC) MUST BE PROPERLY STORED IN SEALED CONTAINERS AND MEET STATE SECONDARY
<br />CONTAINMENT REQUIREMENTS.
<br />C. PORTABLE TOILETS MUST BE SECURED.
<br />D. ADEQUATE SPILL RESPONSE KIT AD DISPOSAL PLAN ON-SITE. SPILLS MUST BE CLEANED UP IMMEDIATELY.
<br />E. ALL MPCA LIQUID AND SOLID WASTE (CONCRETE, STUCCO, PAINT, CURES, ETC) WASHOUT REQUIREMENTS MUST BE MET ON SITE.
<br />24. IN THE EVENT OF ENCOUNTERING A WELL OR SPRING DURING CONSTRUCTION CONTRACTOR TO CEASE CONSTRUCTION ACTIVITY AND
<br />NOTIFY ENGINEER.
<br />25. PIPE OULTETS MUST BE PROVIDED WITH TEMPORARY OR PERMANENT ENERGY DISSIPATION WITHIN 24 HOURS AFTER CONNECTION TO A
<br />SURFACE WATER.
<br />26. FINAL STABILIZATION
<br />FINAL STABILIZATION REQUIRES THAT ALL SOIL DISTURBING ACVTIVITIES HAVE BEEN COMPLETED AND THAT DISTURBED AREAS ARE STABILIZED
<br />BY A UNIFORM PERENNIAL VEGETATIVE COVER WITH 70% OF THE EXPECTED FINAL DENSITY, AND THAT ALL PERMANENT PAVEMENTS HAVE BEEN
<br />INSTALLED. ALL TEMPORARY BMP'S SHALL BE REMOVED, DITCHES STABILIZED, AND SEDIMENT SHALL BE REMOVED FROM PERMANENT
<br />CONVEYANCES AND SEDIMENTATION BASINS IN ORDER TO RETURN THE POND TO DESIGN CAPACITY.
<br />27. RESPONSIBILITIES
<br />A. THE OWNER MUST IDENTIFY A PERSON WHO WILL OVERSEE THE SWPPP IMPLEMENTATION AND THE PERSON RESPONSIBLE FOR
<br />INSPECTION AND MAINTENANCE:
<br />CONTACT: __________________________________
<br /> COMPANY: __________________________________
<br />PHONE: __________________________________
<br />B. THE OWNER MUST IDENTIFY THE A PERSON WHO WILL BE RESPONSIBLE FOR LONG TERM OPERATIONS AND MAINTENANCE OF THE
<br />PERMANENT STORMWATER MANAGEMENT SYSTEM:
<br />CONTACT: __________________________________
<br />COMPANY: __________________________________
<br />PHONE: __________________________________
<br />27. THE WATERSHED DISTRICT OR THE CITY MAY HAVE REQUIREMENTS FOR INSPECTIONS OR AS-BUILT DRAWINGS VERIFYING PROPER
<br />CONSTRUCTION OF THE BMPS.
<br />SWPPP NOTES
<br />SITE VICINITY MAP
<br />CONSTRUCTION STORMWATER SPECIAL WATERS SEARCH MAP
<br />N
<br />N
<br />ESTIMATED QUANTITIES
<br />DESCRIPTION UNIT
<br />TEMPORARY ROCK CONSTRUCTION ENTRANCE EA
<br />SILT FENCE LF
<br />INLET PROTECTION EA
<br />QUANTITY
<br />2
<br />2,100
<br />25
<br />EROSION CONTROL BLANKET SF 7,590
<br />APPROXIMATE
<br />LOCATION OF
<br />PROJECT SITE
<br />*
<br />RECEIVING WATERS
<br />NAME OF
<br />WATER
<br />BODY
<br />TYPE OF
<br />WATER
<br />BODY
<br />SPECIAL
<br />WATER
<br />IMAIRED
<br />WATER
<br />TYPE OF
<br />SPECIAL
<br />WATER
<br />SOUTH LONG LAKE NO YES
<br />SWPPP NOTES
<br />C3-3
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