|
Civil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-00602401 NE LOWRY AVE
<br />2401 NE LOWRY AVENUE; ST. ANTHONY, MN 55418
<br />6390 CARLSON DRIVE; EDEN PRAIRIE, MN 55346
<br />INTERSTATE DEVELOPMENT CORPORATION
<br />PROJECT
<br />ISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:2130809/1/21 CITY RE-SUBMITTAL10/06/21 CITY FINAL SUBMITTAL. .. .. .. .07/20/21 CITY SUBMITTALDRAWN BY:REVIEWED BY:KW, RL, WMBMP, PS. .. .. .. .. .. .. .COPYRIGHT CIVIL SITE GROUP INC.cP
<br />R
<br />E
<br />L
<br />IM
<br />I
<br />N
<br />A
<br />R
<br />Y
<br />:
<br />N
<br />O
<br />T
<br />
<br />F
<br />O
<br />R
<br />C
<br />O
<br />N
<br />S
<br />T
<br />R
<br />U
<br />C
<br />T
<br />I
<br />O
<br />N44263Matthew R. PavekLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED PROFESSIONAL ENGINEERUNDER THE LAWS OF THE STATE OFMINNESOTA.10/06/21REVISION SUMMARYDATEDESCRIPTIONSW1.5SWPPP - ATTACHMENTS. .. .. .. .. .. .ATTACHMENT B: SWPPP INSPECTION FORMATTACHMENT C: MAINTENANCE PLAN FOR PERMANENT STORM WATER TREATMENT SYSTEMNOTE: THIS INSPECTION REPORT DOES NOT ADDRESS ALL ASPECTS OF THE NATIONAL APOLLUTANT DISCHARGE ELIMINATION SYSTEM/STATE DISPOSAL SYSTEM (NPDES/SDS) CONSTRUCTION STORMWATER PERMIT ISSUED ON AUGUST 1,2013. THE COMPLETION OF THIS CHECKLIST DOES NOT GUARANTEE THAT ALL PERMIT REQUIREMENTS ARE IN COMPLIANCE; IT IS THE RESPONSIBILITY OF THE PERMITTEE(S) TO READ AND UNDERSTAND THE PERMIT REQUIREMENTS.FACILITY INFORMATIONSITE NAME: FACILITY ADDRESS: PERMIT NUMBER:CITY: STATE: ZIP CODE:INSPECTION INFORMATIONINSPECTOR NAME: _______________________ PHONE NUMBER: _________________________DATE (MM/DD/YYYY): _____________________ TIME: ____________ AM / PMIS THE INSPECTOR CERTIFIED IN SEDIMENT AND EROSION CONTROL AND IS IT DOCUMENTED IN THE STORMWATER POLLUTION PREVENTION PLAN (SWPPP)?IS THIS INSPECTION ROUTINE OR IN RESPONSE TO A STORM EVENT:RAINFALL AMOUNT (IF APPLICABLE): ____________IS THE SITE WITHIN ONE AERIAL MILE OF A SPECIAL OR IMPARED WATER?IF YES, FOLLOW APPENDIX A AND OTHER APPLICABLE PERMIT REQUIREMENTSNOTE: IF N/A IS SELECTED AT ANY TIME, SPECIFY WHY IN THE COMMENT AREA FOR THAT SECTION.EROSION CONTROL REQUIREMENT (PART IV.B)1. SOIL STABILIZATION WHERE NO CONSTRUCTION ACTIVITY FOR 14 DAYS? (7 DAYS WHERE APPLICABLE)2. HAS THE NEED TO DISTURB STEEP SLOPES BEEN MINIMIZED?3. ALL DITCHES STABILIZED 200; BACK FROM POINT OF DISCHARGE WITHIN 24 HOURS? (NOT MULCH)4. ARE THERE BMP'S FOR ONSITE STOCKPILES?5. ARE APPROPRIATE BMP'S INSTALLED PROTECTING INLETS/OUTLETS?6. DO PIPE OUTLETS HAVE ENERGY DISSIPATION?COMMENTS:SEDIMENT CONTROL REQUIREMENT (PART IV.C)1. PERIMETER CONTROL INSTALLED ON ALL DOWN GRADIENT PERIMETERS?2. PERIMETER CONTROL TRENCHED IN WHERE APPROPRIATE?3. 50 FOOT NATURAL BUFFER MAINTAINED AROUND ALL SURFACE WATERS?3.1. IF NO, HAVE REDUNDANT SEDIMENT CONTROLS BEEN INSTALLED?4. INLET PROTECTION ON ALL CATCH BASINS AND CULVERT INLETS?5. VEHICLE TRACKING BEST MANAGEMENT PRACTICES (BMP'S) AT ALL SITE EXITS?6. ALL TRACKED SEDIMENT REMOVED WITHIN 24 HOURS?7. ARE ALL INFILTRATION SYSTEMS STAKED AND MARKED TO AVOID COMPACTION?8. ARE ALL INFILTRATION AREAS PROTECTED WITH A PRETREATMENT DEVICE?9. DO ALL STOCKPILES HAVE PERIMETER CONTROLS?COMMENTS:MAINTENANCE-EROSION AND SEDIMENT CONTROL BMP'S (PART IV.E.)1. ARE ALL PREVIOUSLY STABILIZED AREAS MAINTAINING 90% GROUND COVER?2. ANY DITCH EROSION OBSERVED?3. PERIMETER CONTROL--HAS SEDIMENT REACHED ONE HALF THE HEIGHT OF THE DEVICE?4. ARE INLET PROTECTION DEVICES MAINTAINED AND FUNCTIONING PROPERLY?COMMENTS:OTHER1. ARE ALL MATERIALS THAT CAN LEACH POLLUTANTS UNDER COVER?2. HAS ACCESS BEEN RESTRICTED TO ONSITE HAZARDOUS MATERIALS?3. DOES ON-SITE FUELING ONLY OCCUR IN A CONTAINED AREA?4. ARE ALL SOLID WASTES BEING PROPERLY DISPOSED OF?5. IS THE CONCRETE WASHOUT AREA COMPLETELY CONTAINED?6. IS THE CONCRETE WASHOUT AREA MARKED WITH SIGN?COMMENTS:7. WERE ANY DISCHARGES SEEN DURING THIS INSPECTION, SEDIMENT, WATER, OR OTHERWISE?7.1. IF YES, STATE THE EXACT LOCATION OF ALL POINTS OF DISCHARGE. PHOTOGRAPH THE DISCHARGE AND DESCRIBE THE DISCHARGE (COLOR, ODOR, FOAM, OIL SHEEN, ETC). HOW WILL IT BE REMOVED? HOW DID THE DISCHARGEHAPPEN? HOW MUCH WAS DISCHARGED? HOW WILL IT BE STOPPED, AND HOW LONG WILL IT TAKE TO STOP? IS THE DISCHARGE GOING INTO AN ADJACENT SITE? WAS THE DISCHARGE A SEDIMENT DELTA? IF YES, WILL THE DELTA BERECOVERED WITHIN 7 DAYS?8. WILL A PERMANENT STORMWATER MANAGEMENT SYSTEM BE UTILIZED IN THIS PROJECT AS REQUIRED AND IN ACCORDANCE WITH PART III.D OF THE PERMIT? DESCRIBE:9. IS ANY DEWATERING OCCURRING ON SITE?9.1. IF YES, WHERE? WHAT BMP IS BEING USED? HOW MUCH WATER IS BEING DEWATERED? IS THE WATER CLEAR? WHERE IS THE WATER BEING DISCHARGED TO?10. IS A COPY OF THE SWPPP LOCATED ON THE CONSTRUCTION SITE?11. HAS THE SWPPP BEEN FOLLOWED AND IMPLEMENTED ON SITE?12. IS A SEDIMENTATION BASIN REQUIRED FOR THIS PROJECT AS SPECIFIED IN THE PERMIT?12.1. IF YES, ARE THEY MAINTAINED AS SPECIFIED IN THE PERMIT?13. IS THE TOPSOIL ON THIS PROJECT BEING PRESERVED?13.1. IF YES, EXPLAIN HOW THE TOP SOIL IS BEING PRESERVED. IF NO, EXPLAIN WHY IT WAS INFEASIBLE.14. ARE ALL INFILTRATION SYSTEMS MARKED TO AVOID COMPACTION?14.1. DO ALL INFILTRATION AREAS HAVE PRETREATMENT DEVICES?15. DESCRIPTION OF AREAS OF NON-COMPLIANCE NOTED DURING THE INSPECTION, REQUIRED CORRECTIVE ACTIONS, AND RECOMMENDED DATE OF COMPLETION OF CORRECTIVE ACTIONS:16. PROPOSED AMENDMENTS TO THE SWPPP:17. POTENTIAL AREAS OF FUTURE CONCERN:18. ADDITIONAL COMMENTSDISCLOSURES:·AFTER DISCOVERY, THE PERMIT REQUIRES MANY OF THE DEFICIENCIES THAT MAY BE FOUND IN THIS CHECKLIST BE CORRECTED WITHIN A SPECIFIED PERIOD OF TIME. SEE PERMIT FOR MORE DETAILS.·THIS INSPECTION CHECKLIST IS AN OPTION FOR SMALL CONSTRUCTION SITES. LARGE CONSTRUCTION SITES AND LINEAR PROJECTS REQUIRE MORE EXTENSIVE/MORE LOCATION SPECIFIC INSPECTION REQUIREMENTS.·THE PERMITTEE(S) IS/ARE RESPONSIBLE FOR THE INSPECTION AND MAINTENANCE OF TEMPORARY AND PERMANENT WATER QUALITY MANAGEMENT BMP'S AS WELL AS EROSION PREVENTION AND SEDIMENT CONTROL BMP'S UNTILANOTHER PERMITTEE HAS OBTAINED COVERAGE UNDER THIS PERMIT ACCORDING TO PART II.B.5., OR THE PROJECT HAS UNDERGONE FINAL STABILIZATION AND A NOTICE OF TERMINATION HAS BEEN SUBMITTED TO THE MPCA.Y N N/AY N N/AY N N/AY N N/AY N N/AY N N/AY N N/AY N N/AATTACHMENT C - COMBINEDFACILITY MANAGEMENT SCHEDULE1.ALL STORMWATER RETENTION, DETENTION AND TREATMENT BASINS MUST BE INSPECTED AT LEAST ONCE A YEAR TO DETERMINE THAT BASINRETENTION AND TREATMENT CHARACTERISTICS ARE ADEQUATE. A STORAGE TREATMENT BASIN WILL BE CONSIDERED INADEQUATE IF SEDIMENTHAS DECREASED THE WET STORAGE VOLUME BY 50 PERCENT OR DRY STORAGE VOLUME BY 25 PERCENT OF ITS ORIGINAL DESIGN VOLUME.BASED ON THIS INSPECTION, IF A STORMWATER BASIN REQUIRES SEDIMENT CLEANOUT, THE BASIN WILL BE RESTORED TO ITS ORIGINAL DESIGNCONTOURS AND VEGETATED STATE WITHIN ONE YEAR OF THE INSPECTION DATE.2. ALL GRIT CHAMBERS, SUMP CATCH BASINS, SUMP MANHOLES, OUTLET STRUCTURES, CULVERTS, OUTFALL STRUCTURES AND OTHER STORMWATERFACILITIES FOR WHICH MAINTENANCE REQUIREMENTS ARE NOT OTHERWISE SPECIFIED HEREIN MUST BE INSPECTED IN THE SPRING, SUMMER ANDFALL OF EACH YEAR. WITHIN 30 DAYS OF THE INSPECTION DATE, ALL ACCUMULATED SEDIMENT AND DEBRIS MUST BE REMOVED SUCH THATEACH STORMWATER FACILITY OPERATES AS DESIGNED AND PERMITTED. CONTRIBUTING DRAINAGE AREAS MUST BE KEPT CLEAR OF LITTER ANDVEGETATIVE DEBRIS, INFLOW PIPES AND OVERFLOW SPILLWAYS KEPT CLEAR, INLET AREAS KEPT CLEAN, AND UNDESIRABLE VEGETATION REMOVED.EROSION IMPAIRING THE FUNCTION OR INTEGRITY OF THE FACILITIES, IF ANY, WILL BE CORRECTED, AND ANY STRUCTURAL DAMAGE IMPAIRINGOR THREATENING TO IMPAIR THE FUNCTION OF THE FACILITIES MUST BE REPAIRED.3. VOLUME CONTROL FACILITIES AND CONTRIBUTING DRAINAGE AREAS MUST BE INSPECTED EVERY THREE MONTHS DURING THE OPERATIONALPERIOD (BETWEEN SPRING SNOWMELT AND FIRST SUBSTANTIAL SNOWFALL) AND MONITORED AFTER RAINFALL EVENTS OF 1 INCH OR MORE TOENSURE THAT THE CONTRIBUTING DRAINAGE AREA IS CLEAR OF LITTER AND DEBRIS, INFLOW PIPES AND OVERFLOW SPILLWAYS ARE CLEAR, INLETAREAS ARE CLEAN, UNDESIRABLE VEGETATION IS REMOVED AND THERE IS NO EROSION IMPAIRING OR THREATENING TO IMPAIR THE FUNCTIONOF A FACILITY. IF SEDIMENT HAS ACCUMULATED IN A INFILTRATION FEATURE, WITHIN 30 DAYS OF INSPECTION DEPOSITED SEDIMENTS MUST BEREMOVED, THE INFILTRATION CAPACITY OF THE UNDERLYING SOILS MUST BE RESTORED, AND ANY SURFACE DISTURBANCE MUST BE STABILIZED.INSPECTION MUST ENSURE THAT SEDIMENT TRAPS AND FOREBAYS ARE TRAPPING SEDIMENT AND THAT MORE THAN 50 PERCENT OF THESTORAGE VOLUME REMAINS, THE CONTRIBUTING DRAINAGE AREA IS STABLE (I.E., NO EROSION IS OBSERVED), AND INLETS ANDOUTLET/OVERFLOW SPILLWAYS ARE IN GOOD CONDITIONS WITH NO EROSION. MAINTENANCE TECHNIQUES USED MUST PROTECT THEINFILTRATION CAPACITY OF THE PRACTICE BY LIMITING SOIL COMPACTION TO THE GREATEST EXTENT POSSIBLE (E.G., BY USING LOW-IMPACTEARTH-MOVING EQUIPMENT).4. UNDERGROUND STORAGE CHAMBERS MUST BE INSPECTED AT LEAST ONCE A YEAR TO ENSURE THAT ADEQUATE STORAGE CAPACITY REMAINS.CAPACITY WILL BE CONSIDERED INADEQUATE IF SEDIMENT HAS DECREASED THE STORAGE VOLUME BY 50 PERCENT OF ITS ORIGINAL DESIGNVOLUME. ACCUMULATED DEBRIS AND SEDIMENT WILL BE REMOVED, AND INLET AND OUTLET STRUCTURES WILL BE CLEARED OF ANY FLOWIMPEDIMENTS.38
|