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Jun 09, 2021 - 2:40pm - User:jbalzer L:\PROJECTS\20658.03\CAD\Civil\Sheets\20658.03-C9-DET.dwg C9.01 DETAILS Project Location Date Submittal / RevisionNo. Certification Sheet Title Summary Revision History Sheet No.Revision Project No. By Designed:Drawn: Approved:Book / Page: Phase:Initial Issue: Client GORDON JAMES CONSTRUCTION 5159 MAIN STREET SUITE 200 MAPLE PLAIN, MN 55359 ORCHARD CREEK ORONO, MN JEB CJS ETL FINAL 04/22/2020 20658.03 Registration No.Date: 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. If applicable, contact us for a wet signed copy of this plan which is available upon request at Sambatek's, Minnetonka, MN office. 04/22/202050475 Eric T. Luth Registration No.Date: I hereby certify that this survey, plan or report was prepared by me or under my direct supervision and that I am a duly Licensed LANDSCAPE ARCHITECT under the laws of the State of Minnesota. This certification is not valid unless wet signed in blue ink. If applicable, contact us for a wet signed copy of this survey which is available upon request at Sambatek, Minnetonka, MN office. 02/20/202040252 William L. Delaney 04/22/20 City Submittal 05/01/20 MCWD Submittal 05/04/20 City Resubmittal 07/22/20 City Resubmittal 04/01/21 Final Plat 05/19/21 Final Plat City Comments 06/09/21 Stormwater Basin Update 12'12' 1 3B 3A 4 5 2 1.PREPARE SOIL BEFORE INSTALLING BLANKETS, INCLUDING ANY NECESSARY APPLICATION OF LIME, FERTILIZER, AND SEED. 2.BEGIN AT THE TOP OF THE SLOPE BY ANCHORING THE BLANKET IN A 6" DEEP X 6" WIDE TRENCH WITH APPROXIMATELY 12" OF BLANKET EXTENDED BEYOND THE UP-SLOPE PORTION OF THE TRENCH. ANCHOR THE BLANKET WITH A ROW OF STAPLES/STAKES APPROXIMATELY 12" APART IN THE BOTTOM OF THE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING. APPLY SEED TO COMPACTED SOIL AND FOLD REMAINING 12" PORTION OF BLANKET BACK OVER SEED AND COMPACTED SOIL. SECURE BLANKET OVER COMPACTED SOIL WITH A ROW OF STAPLES/STAKES SPACED APPROXIMATELY 12" APART ACROSS THE WIDTH OF THE BLANKET. 3.ROLL THE BLANKETS (A.) DOWN OR (B.) HORIZONTALLY ACROSS THE SLOPE. BLANKETS WILL UNROLL WITH APPROPRIATE SIDE AGAINST THE SOIL SURFACE. ALL BLANKETS MUST BE SECURELY FASTENED TO SOIL SURFACE BY PLACING STAPLES/STAKES IN APPROPRIATE LOCATIONS AS PER MANUFACTURES RECOMMENDATION. 4.THE EDGES OF PARALLEL BLANKETS MUST BE STAPLED WITH APPROXIMATELY 4"-6" OVERLAP DEPENDING ON BLANKET TYPE. TO ENSURE PROPER SEAM ALIGNMENT, PLACE THE EDGE OF THE OVERLAPPING BLANKET (BLANKET BEING INSTALLED ON TOP) EVEN WITH THE SEAM STITCH ON THE PREVIOUSLY INSTALLED BLANKET. 5.CONSECUTIVE BLANKETS SPLICED DOWN THE SLOPE MUST BE PLACED END OVER END (SHINGLE STYLE) WITH AN APPROXIMATE 3"OVERLAP. STAPLE THROUGH OVERLAPPED AREA, APPROXIMATELY 12"APART ACROSS ENTIRE BLANKET WIDTH. 6.PLACE STAPLES/STAKES PER MANUFACTURE RECOMMENDATION FOR THE APPROPRIATE SLOPE BEING APPLIED. NOTES: 1.IN LOOSE SOIL CONDITIONS, THE USE OF STAPLE OR STAKE LENGTHS GREATER THAN 6" MAY BE NECESSARY TO PROPERLY SECURE THE BLANKETS. 2.FOLLOW EROSION CONTROL TECHNOLOGY COUNCIL SPECIFICATION FOR PRODUCT SELECTION 4"- 6" 6" 6" 12" 3" N.T.S. EROSION CONTROL BLANKET N.T.S. 1 4 6 7 5 NOTES: 1.HORIZONTAL STAPLE SPACING SHOULD BE ALTERED IF NECESSARY TO ALLOW STAPLES TO SECURE THE CRITICAL POINTS ALONG THE CHANNEL SURFACE. 2.IN LOOSE SOIL CONDITIONS, THE USE OF STAPLE OR STAKE LENGTHS GREATER THAN 6" MAY BE NECESSARY TO PROPERLY ANCHOR THE BLANKETS. 3.FOLLOW EROSION CONTROL TECHNOLOGY COUNCIL SPECIFICATION FOR PRODUCT SELECTION. 4"-6" 6" 6" B A B A 8 3 12" 2 1.PREPARE SOIL BEFORE INSTALLING BLANKETS, INCLUDING ANY NECESSARY APPLICATION OF LIME, FERTILIZER, AND SEED. 2.BEGIN AT THE TOP OF THE CHANNEL BY ANCHORING THE BLANKET IN A 6" DEEP X 6" WIDE TRENCH WITH APPROXIMATELY 12" OF BLANKET EXTENDED BEYOND THE UP-SLOPE PORTION OF THE TRENCH. ANCHOR THE BLANKET WITH A ROW OF STAPLES/STAKES APPROXIMATELY 12"APART IN THE BOTTOM OF THE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING. APPLY SEED TO COMPACTED SOIL AND FOLD REMAINING 12"PORTION OF BLANKET BACK OVER SEED AND COMPACTED SOIL. SECURE BLANKET OVER COMPACTED SOIL WITH A ROW OF STAPLES/STAKES SPACED APPROXIMATELY 12" APART ACROSS THE WIDTH OF THE BLANKET. 3.ROLL CENTER BLANKET IN DIRECTION OF WATER FLOW IN BOTTOM OF CHANNEL. BLANKETS WILL UNROLL WITH APPROPRIATE SIDE AGAINST THE SOIL SURFACE. ALL BLANKETS MUST BE SECURELY FASTENED TO SOIL SURFACE BY PLACING STAPLES/STAKES IN APPROPRIATE LOCATIONS AS PER MANUFACTURER'S RECOMMENDATIONS. 4.PLACE CONSECUTIVE BLANKETS END OVER END (SHINGLE STYLE) WITH A 4"-6" OVERLAP. USE A DOUBLE ROW OF STAPLES STAGGERED 4" APART AND 4" ON CENTER TO SECURE BLANKETS. 5.FULL LENGTH EDGE OF BLANKETS AT TOP OF SIDE SLOPES MUST BE ANCHORED WITH A ROW OF STAPLES/STAKES APPROXIMATELY 12" APART IN A 6" DEEP X 6" WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING. 6.ADJACENT BLANKETS MUST BE OVERLAPPED APPROXIMATELY 4"-6" (DEPENDING ON BLANKET TYPE) AND STAPLED. TO ENSURE PROPER SEAM ALIGNMENT, PLACE THE EDGE OF THE OVERLAPPING BLANKET (BLANKET BEING INSTALLED ON TOP) EVEN WITH THE SEAM STITCH ON THE BLANKET BEING OVERLAPPED. 7.IN HIGH FLOW CHANNEL APPLICATIONS, A STAPLE CHECK SLOT IS RECOMMENDED AT 30 TO 40 FOOT (9m-12m) INTERVALS. USE A DOUBLE ROW OF STAPLES STAGGERED 4" APART AND 4" ON CENTER OVER ENTIRE WIDTH OF THE CHANNEL. 8.THE TERMINAL END OF THE BLANKETS MUST BE ANCHORED WITH A ROW OF STAPLES/STAKES APPROXIMATELY 12" (30cm) APART IN A 6" DEEP X 6" WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING. 9.PLACE STAPLE/STAKES PER MANUFACTURER'S RECOMMENDATION FOR THE APPROPRIATE CHANNEL FLOW OR SHORELINE APPLICATION CRITICAL POINTS A.OVERLAPS AND SEAMS B.PROJECTED WATER LINE C.CHANNEL BOTTOM/SIDE SLOPE VERTICES 6" 4"-6" 6" 4" 4" C C EROSION CONTROL BLANKET N.T.S. 8" HDPE DRAINTILE SEE BIOFILTRATION BASIN DETAIL FOR COMPLETE BASIN SECTION. REFER TO GRADING AND DRAINAGE PLAN FOR BASIN AND DRAINTILE CONFIGURATIONDRAINTILE OUTLET TO OCS IE=941.60 OUTLET CONTROL STRUCTURE (OCS 101) RE=948.10 15" DIAMETER ORIFICE IE=945.60 OUTLET CONTROL STRUCTURE DETAIL (OCS 101) 15" RCP OUTLET PIPE IE=941.60 N.T.S. PLANT MATERIAL TOLERANT OF INUNDATION AND DROUGHT. NATIVE PLANTS RECOMMENDED. 6" ABOVE BASIN BOTTOM MEDIA WIDTH-VARIES BOTTOM-VARIES 3H:1L MAX. PAVEMENT UNDISTURBED, UNCOMPACTED INSITU SOIL BOTTOM ELEVATION =944.10 FILTER MEDIA UNCOMPACTED IN 6" LIFTS HOMOGENOUS BLEND OF 70% SAND (5% PASSING THE #200 SIEVE, MAXIMUM OF 60% PASSING THE #40 SIEVE) 30% ORGANIC (PEAT MOSS, HYPNUM OR SPHAGNUM) (BY VOLUME) PH=5.5-7.0 ORGANIC CONTENT SHALL BE A MINIMUM OF 1% PER ASTM D 2974 NON-WOVEN GEOTEXTILE (MnDOT TYPE 1) OVER GRAVEL BLANKET - EXTENDING 1-2' FROM UNDERDRAIN PIPE SIDES. UNDERDRAIN GRAVEL BLANKET 1-1.5" DOUBLE WASHED STONE 8" HDPE PERFORATED DRAINTILE 1: 3 ( M I N ) T Y P 0.25% (MAX) TYP. 1-2' 30 " MI N . BIOFILTRATION BASIN DETAIL GALVANIZED GRATE (SPLIT) 4"X4" OPENINGS GRASS BUFFER STRIP BASIN BOTTOM EL=944.10 8" PVC WYE 45° LONG RADIUS BEND 8" PVC CLEANOUT STACK FEMALE ADAPTOR FINISHED GRADE N.T.S. TYPICAL CLEANOUT