HomeMy WebLinkAboutLaguna Lake Dredging Plan Set - 2021Reference Documents:City Standard Specifications - May 2018 EditionCity Engineering Standards - May 2018 Editionindex to planssheet no.descriptionsan luis obispo county, california1TITLE SHEET2 PROJECT NOTES AND SITE PLAN3 DREDGING PLAN4 DEWATERING PLAN5 HAULING ROUTE PLAN6 BANK STABILIZATION PLANAPPROVED BYSPECIFICATION NO.DATEofSHEETMatthew A. Horn, City Engineer R.C.E. C63611 Approved Date6MAR 2021913921FILE NO./LOCATION[MO DAY, YEAR]Service AlertgroundUnderSan Luis Obispo, CA 93401811 El Capitan Way, Ste. 130ENGINEERINGPLANNINGSURVEYINGCONSTRUCTION MANAGEMENTENGINEERS INC805.787.0326 PhonePROJECT VICINITY MAP1. ANY DEVIATION FROM THESE PLANS MUST BE APPROVED IN WRITING BYTHE ENGINEER.2. ALL CONSTRUCTION MUST BE IN ACCORDANCE WITH THESE PLANS,TECHNICAL SPECIFICATIONS, AND THE APPLICABLE STANDARDSREFERENCED BELOW.3. THE CONTRACTOR MUST HAVE A CLASS "A" OR "C-12" CONTRACTOR'SLICENSE AT THE TIME OF THE BID OPENING4. THE CONTRACTOR MUST PROVIDE THE CONTRACT ADMINISTRATOR AMINIMUM OF 4 WORKING DAYS WRITTEN NOTICE PRIOR TO THE START OFCONSTRUCTION.5. EXISTING UTILITIES ARE NOT SHOWN ON THESE PLANS. IT IS THECONTRACTORS RESPONSIBILITY TO LOCATE UTILITIES WHERE CONFLICTSEXIST. THE CONTRACTOR MUST PROTECT EXISTING FACILITIES IN-PLACEUNLESS OTHERWISE NOTED.6. HOURS OF CONSTRUCTION MUST BE BETWEEN 7:00 AM AND 4:00 PMMONDAY THROUGH FRIDAY. CHANGES TO NORMAL WORKING HOURSSUBJECT TO APPROVAL BY THE ENGINEER.7. THE CONTRACTOR MUST REMOVE AND REPLACE, IN KIND, ANY PUBLIC ORPRIVATE IMPROVEMENTS INCLUDING BUT NOT LIMITED TO: GRASS, CURB,GUTTER, TREES, SHRUBS, FENCE, GUARD RAILS, BLOCK WALL,LANDSCAPE, IRRIGATION PIPE, APPURTENANCES, ASPHALT BERM,CONCRETE AND ASPHALT DRIVEWAY, AND SIDEWALK DAMAGED DURINGCONSTRUCTION IN ACCORDANCE WITH THE PLAN AND SPECIFICATIONSAT THE DIRECTION OF THE ENGINEER.8. THE CONTRACTOR MUST PROVIDE AS-BUILT DRAWINGS, PRIOR TOPROJECT ACCEPTANCE, TO THE CITY.1. IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO MINIMIZE HIS OR HERIMPACT ON THE ENVIRONMENT AT THE PROJECT SITE AND THESURROUNDING AREAS. THE CONTRACTOR SHALL COMPLY WITH ALLENVIRONMENTAL PERMIT REGULATIONS.2. THE TOTAL AREA TO BE DISTURBED AS PART OF THIS PROJECT MAYEXCEED 1 ACRE. THE CONTRACTOR SHALL BE RESPONSIBLE FOR THEPREPARATION OF A SWPPP AND OBTAINING A NPDES PERMIT. THECONTRACTOR SHALL COMPLY WITH THESE DOCUMENTS AT ALL TIMESDURING THE PROJECT.3. DREDGING OPERATIONS SHALL BE LIMITED TO APRIL 15 TO NOVEMBER 1 TOREDUCE ECOLOGICAL IMPACTS DURING THE WET SEASON. ANY WORK DONEDURING THE NESTING SEASON, FEBRUARY 1 TO AUGUST 31, REQUIRES ANAVIAN NESTING SURVEY WITHIN 30 DAYS OF THE START OF THE PROJECT.1. ACCESS TO LAGUNA LAKE MUST BE VIA THE ENTRANCE AT MADONNAROAD AND DALIDIO DRIVE AS INDICATED.2. ACCESS ROAD AND ALL OTHER ACCESS ROUTES USED SHALL BEMAINTAINED BY THE CONTRACTOR FOR THE DURATION OF THE PROJECT.THE CONTRACTOR SHALL RETURN THE ACCESS ROAD AND ALL OTHERACCESS ROUTES USED TO PRE-EXISTING CONDITION OR BETTER, ASDETERMINED BY THE ENGINEER, AT THE END OF THE CONTRACT PERIOD.BATHYMETRIC SURVEY DATA OF LAGUNA LAKE FROM 1977, 2012, AND 2014 WASPROVIDED BY THE CITY OF SAN LUIS OBISPO. THE 1977 AND 2012 SPOTELEVATION DATA WERE GATHERED MAINLY IN THE CENTER LAKE, PENINSULAINLET, AND NORTHWEST INLET PORTIONS OF THE LAKE. THE 2014 SURVEY WASCONDUCTED TO SUPPLEMENT THE 1977 AND 2012 DATA WITH SPOTELEVATIONS FROM THE SOUTHEAST ARM PORTION OF THE LAKE. THE SOURCEDATA FROM 2012 AND 2014 WERE COMBINED TO FORM A SINGLETOPOGRAPHIC 3D SURFACE MODEL OF THE LAKEBED IN AUTOCAD, BASED ONTHE NAVD88 DATUM. THIS SURFACE WAS ASSUMED TO BE REPRESENTATIVEOF THE CURRENT CONDITION OF THE LAKEBED AND WAS USED AS THEBASELINE FOR THE ANALYSIS OF THE DREDGING PLAN AND DREDGINGVOLUME QUANTITY ESTIMATES.CITY LIMITLAGUNA LAKE NATURAL RESERVESTREET BOUNDARYEXISTING 1-FT CONTOUR LINEEXISTING 5-FT CONTOUR LINEAPPROXIMATE LAGUNA LAKEHIGH WATER LEVELPROPOSED 1-FT CONTOUR LINEPROPOSED 5-FT CONTOUR LINE30 FOOT SHORE OFFSET FOR DREDGINGEXISTING GUARD RAILPLAN SHEET LAYOUTAPPROXIMATE DREDGING AREADREDGING STAGING AREASHORE LINE PROTECTIONSEDIMENT DE-WATERING BAGSILT FENCEGRAVEL BAG BERMFLOATING DREDGE PIPELINE3DTHREE DIMENSIONALCYCUBIC YARDSFTFEETNSNON-STORMWATERRSPROCK SLOPE PROTECTIONSESEDIMENT, SOUTHEASTWMWASTE MANAGEMENTNRCSNATURAL RESOURCES CONSERVATION SERVICE·AMERICAN WATER WORKS ASSOCIATION (AWWA) STANDARDS·STANDARD SPECIFICATIONS FOR PUBLIC WORKS CONSTRUCTION("GREENBOOK"), LATEST EDITION AND REVISIONS·CALIFORNIA STORMWATER QUALITY ASSOCIATION (CASQA)STANDARDS·CITY OF SAN LUIS OBISPO DRAINAGE DESIGN MANUAL, LATESTEDITION SAN LUIS OBISPOPROJECT AREAHW
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C-1LAGUNA LAKE 2021MAINTENANCE DREDGINGPROJECT03-17-2021LAGUNA LAKE 2021MAINTENANCE DREDGINGPROJECTBrian A Nelson, City Engineer R.C.E. C79870 April 14, 2021
LAGUNA LAKE PARK/NATURAL RESERVEENTRANCELAGUNA LAKEPARKLAGUNA LAKESHEET C-3SHEET C-5LAGUNA LAKENATURAL RESERVESHEET C-6SHEET C-4TEMPORARY FLOATINGDREDGING PIPELINE(≈3200LF)0'0'500'500'1" = 500'2PROJECT NOTES AND SITE PLAN 123SITE PLAN NOTES1. DREDGE IN APPROXIMATE AREA SHOWN PER SHEETS C-2 AND C-3 AND PER SPECIFICATIONS.2. CONSTRUCT SEDIMENT DEWATERING AREA PER SHEET C-4 AND PER SPECIFICATIONS.3. HAUL DEWATERED SEDIMENT TO COLD CANYON LANDFILL ALONG HAUL ROUTE SHOWN ON SHEET C-5.ALTERNATE DISPOSAL LOCATIONS MAY BE PROPOSED FOR REVIEW AND APPROVAL BY THE ENGINEERPER SECTION 79-19.4. ROUTING OF PIPELINE IS APPROXIMATE. DREDGING PIPELINE SHALL BE ROUTED AWAY FROM SHORE ANDSUSPENDED WITH FLOATS.1233SITE PLANDATE:PROJECT TITLE:
SHEET TITLE:ofSHEET NO.DESIGNED BY:DRAWN BY:CHECKED BY:APPROVED BY:DRAWING NO.SPEC. NO. 91392CITY SPECIFICATION NO.MAR 2021DATE:PROJECT TITLE:
SHEET TITLE:ofSHEET NO.6DESIGNED BY:KASDRAWN BY:SPCHECKED BY:NPAPPROVED BY:DRAWING NO.Service AlertgroundUnderLAGUNA LAKE 2021 MAINTENANCE
DREDGING PROJECT
C-244(IF PRINTED AT 11x17SCALE IS 1"=1000')ACF SEDIMENT DEWATERING BAG DETAIL. SEE SHEET 4CONSTRUCTION NOTE 4SILT BAGS SHALL BE PLACED ON STRAW,EROSION CONTROL BLANKETS, ORAPPROVED EQUAL. NO AGGREGATE WILLBE USED.03-17-2021
1101201101200+001+002+003+004+005+00EXISTING LAKE BED SURFACEPROPOSED SURFACEHIGH WATER ELEVATION 120.51.5'±1101201101200+001+00 1+50EXISTING LAKE BEDSURFACEPROPOSEDSURFACEHIGH WATERELEVATION 120.51.5'±1101201101200+001+00 1+50EXISTING LAKE BEDSURFACEPROPOSEDSURFACEHIGH WATERELEVATION 120.51.5'±LAGUNA LAKEPREFUMO INLETVISTA LAGOAPPROXIMATE MAXIMUMEXTENT OF DREDGING AREAFLOATING PIPELINE TODEWATERING AREA,SEE SHEET C-4SECTION CAPPROXIMATE SHORELINE ATHIGH WATER LEVEL,ELEVATION 120.5 FTAPPROXIMATE SHORELINE ATHIGH WATER LEVEL,ELEVATION 120.5 FT0+0
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APPROXIMATE 30-FT OFFSETALLOWABLE DREDGING BOUNDARY1
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1201161171181191151151201161171181191151201161171181190+001+001+500+001+001+50SECTION BSECTION A0'0'100'100'1" = 100'DREDGING PLAN DREDGING CRITERIAAVERAGE DREDGING DEPTH1.5 FTAPPROXIMATE DREDGING AREA 1.16 ACRESSIDE WALL SLOPE4:1APPROXIMATE DREDGING VOLUME2,000 CYDREDGING NOTES1. CONTRACTOR SHALL VERIFY THAT THEIR PROPOSED DREDGING BARGE AND EQUIPMENT CAN BE LAUNCHED AND OPERATED INLAGUNA LAKE AT THE TIME OF BID.2. NO DREDGING IS ALLOWED WITHIN 30 FEET OF THE SHORELINE AT THE HIGH WATER LEVEL OF 120.5 FT AS SHOWN ON THEDREDGING PLAN.3. FINAL CUT SLOPES SHALL NOT EXCEED A SLOPE OF 4:1 (HORIZONTAL TO VERTICAL), EXCEPT WHERE SPECIFICALLY APPROVEDOTHERWISE.4. THE CONTRACTOR SHALL PROVIDE A SILT CURTAIN TO SURROUND THE ACTIVE DREDGING LOCATION AND DREDGE BARGEDURING DREDGING ACTIVITIES PER SECTION 79-3 OF THE SPECIFICATIONS.5. EXISTING AND FINAL CONTOURS ARE BASED ON DATA DESCRIBED IN SURVEY NOTES ON SHEET C-1. DREDGING CRITERIA AREPROVIDED IN THE FOLLOWING TABLE. FINAL CONTOURS MAY VARY FROM THIS PLAN AS COORDINATED WITH THE ENGINEER.6. DREDGE AREA SHOWN WITH SECTIONS A, B, AND C DEFINE THE MAXIMUM EXTENTS OF DREDGING. CONTRACTOR SHALL STAYWITHIN THESE EXTENTS AND REMOVE THE VOLUME OF SEDIMENT AWARDED IN THE CONTRACT.3DREDGING PLANDATE:PROJECT TITLE:
SHEET TITLE:ofSHEET NO.DESIGNED BY:DRAWN BY:CHECKED BY:APPROVED BY:DRAWING NO.SPEC. NO. 91392CITY SPECIFICATION NO.MAR 2021DATE:PROJECT TITLE:
SHEET TITLE:ofSHEET NO.6DESIGNED BY:KASDRAWN BY:SPCHECKED BY:NPAPPROVED BY:DRAWING NO.Service AlertgroundUnderLAGUNA LAKE 2021 MAINTENANCE
DREDGING PROJECT
C-30'0'50'50'HORIZ: 1" = 50'VERT: 1" = 5'SECTION C0'0'50'50'HORIZ: 1" = 50'VERT: 1" = 5'SECTION B0'0'50'50'HORIZ: 1" = 50'VERT: 1" = 5'SECTION A(IF PRINTED AT 11x17SCALE IS 1"=200')03-17-2021
12346LAGUNA LAKE PARKBIKE PATHACCESS FROM
MADONNA ROAD
LIMIT OF DREDGINGSTAGING AREA≈36,000 SFTEMPORARY FLOATING DREDGINGPIPELINE FROM DREDGING AREA115120125130135116117118119121122123124126127128129131132133134136137138125130135126127128129131132133134136137138139879CONTRACTOR TO INSTALL ANDSIZE IRRIGATION SYSTEM TOBROADCAST RUNOFF ANDPREVENT WATER FROMRETURNING TO THE LAKEAPPROX. SEDIMENT BASINLOCATION - CONTRACTOR TOADEQUATELY SIZE BASIN TOHANDLE RUNOFF LEAVING SILTBAGS, BALANCED WITH PUMPING/IRRIGATION DISTRIBUTION102A511120'0'50'50'1" = 50'CONSTRUCTION NOTESTEMPORARILY REMOVE WOOD GUARD RAIL AS NEEDED TO ACCESS STAGING AREA. CONTRACTOR TO REPLACE WOOD GUARD RAIL AT COMPLETION OF CONSTRUCTION UNLESS DIRECTED OTHERWISE BY THE ENGINEER.DREDGING STAGING AREA.WITHIN STAGING AREA CONTRACTOR SHALL COMPLY WITH TYPICAL GOOD HOUSEKEEPING PROCEDURES. AT A MINIMUM THE FOLLOWING CASQA STANDARD BMPs SHALL BE USED:A.) NS-2. APPLICABLE TO SEDIMENT DEWATERING BAGS.B.) NS-9. APPLICABLE TO VEHICLES AND EQUIPMENT REQUIRING RE-FUELING ONSITE.C.) NS-10. APPLICABLE TO VEHICLES AND EQUIPMENT REQUIRING MAINTENANCE ONSITE.D.) WM-1. APPLICABLE TO HAZARDOUS MATERIALS DELIVERED AND STORED ONSITE.E.) WM-2. APPLICABLE TO HAZARDOUS MATERIALS USED ONSITE.F.) WM-5. APPLICABLE TO SOLID WASTE GENERATED FROM THE PROJECT, INCLUDING: TREES, SHRUBS, PACKAGING MATERIAL, TRASH, ETC.G.) WM-9. APPLICABLE TO TEMPORARY SANITARY/ SEPTIC FACILITIES USED ONSITE BY THE CONTRACTOR.H.) WM-10. APPLICABLE TO POLLUTANTS THAT MAY DRAIN OR ENTER LAGUNA LAKE AS A RESULT FROM DREDGING.PLACE SILT FENCE AROUND PERIMETER OF CONSTRUCTION STAGING AREA PER CASQA SE-1, EXCEPT AT CONDUITS OR CHANNELS DIRECTING RUNOFF TO SEDIMENT & WATER COLLECTION BAISN.DREDGING SPOILS TO BE COLLECTED IN 15'x15' 9.6yd³ SEDIMENT DEWATERING BAGS, GEI WORKS, ACF DIRTBAG, ORAPPROVED EQUAL. SEE SHEET 2 FOR ACF DIRTBAG DETAIL. ILLUSTRATED LAYOUT PROVIDED FOR PROJECT VISUALIZATIONONLY, FINAL LAYOUT FOR DEWATERING BAGS TO BE DETERMINED BY CONTRACTOR AND APPROVED BY THE ENGINEER.SEDIMENT DEWATERING AREA SHALL BE PREPARED BY THE CONTRACTOR IN ACCORDANCE WITH THESE PLANS AND THESPECIFICATIONS AND SHALL INCLUDE :A.) A GEOTEXTILE LINER, SHEET FLOWS CHANNELIZATION & PIPING AS NEEDED TO DIRECT WATER TO SEDIMENTATIONBASIN(S).B.) FILTERING OR OTHER MEANS OF TURBIDITY REMOVAL MAY BE REQUIRED AS IS THE RESPONSIBILITY OF THECONTRACTOR.C.) SEDIMENT CONTROL BMPS INCLUDING SILT FENCING SHALL BE INSTALLED AROUND THE DOWNSTREAM PERIMETER OFTHE DEWATERING AREA AND COLLECTION BASIN AS SHOWN. WHERE SILT FENCING IS NOT REQUIRED, CONSTRUCTIONFENCING SHALL BE USED TO ENCLOSE THE STAGING AREA.D.) THIS AREA RESERVED FOR SEDIMENTATION BAGS HAS BEEN SIZED AND RESERVED BY THE CITY OF SAN LUIS OBISPO.CONTRACTOR TO VERIFY SPACE AVAILABLE AND ADJUST OPERATIONS TO FIT.COLLECTION BASIN FOR DEWATERING RUNOFF. ALL DEWATERING RUNOFF SHALL BE CHANNELED TO THIS BASIN.PROTECT EXISTING TREES IN PLACE. PROTECT IN PLACE EXISTING INFORMATIONAL KIOSK. USE GSA FENCING TO PROTECTTHESE ITEMS PER SECTION 77-1.03A(2).CONSTRUCT SHORELINE PROTECTION. SEE BANK STABILIZATION PLAN ON SHEET C-6.DREDGING PIPELINE AND ANY ASSOCIATED MANIFOLD MAY BE LOCATED/MOVED AS DESIRED BY THE CONTRACTOR TO OPTIMIZE THEIR OPERATION. LOCATION SHALL BE SET-UP TO CAPTURE AND DIRECT WATER ON/IN IMPERVIOUS CONVEYANCE TO TEMPORARY SEDIMENT BASIN(S).CONTRACTOR TO SIZE AND INSTALL IRRIGATION SYSTEM TO BROADCAST DEWATER RUNOFF IN SUCH A MANNER TO PREVENT RETURN WATER TO THE LAKE. CONTRACTOR SHALL SUBMIT A PLAN WITH SCHEMATIC AFTER VERIFYING ACCEPTABLE AREAS TO IRRIGATE WITH THE CITY. THIS SYSTEM MAY EXTEND ANYWHERE WITHIN THE PARK AS APPROVEDBY THE CITY.CONTRACTOR SHALL INSTALL HDPE PIPE UNDERNEATH THE BIKE PATH AND SLEEVE THE DREDGING LINE SO THAT THE PATH REMAINS UNOBSTRUCTED TO PEDESTRIANS DURING CONSTRUCTION.CONTRACTOR SHALL INSTALL A 10'X20' MIN. ROCK PROTECTION ENTRANCE, OR APPROVED EQUAL, FOR VEHICLES LEAVINGSTAGING AREA.1234564DEWATERING PLANDATE:PROJECT TITLE:
SHEET TITLE:ofSHEET NO.DESIGNED BY:DRAWN BY:CHECKED BY:APPROVED BY:DRAWING NO.SPEC. NO. 91392CITY SPECIFICATION NO.MAR 2021DATE:PROJECT TITLE:
SHEET TITLE:ofSHEET NO.6DESIGNED BY:KASDRAWN BY:SPCHECKED BY:NPAPPROVED BY:DRAWING NO.Service AlertgroundUnderLAGUNA LAKE 2021 MAINTENANCE
DREDGING PROJECT
C-478DEWATERING PLANGENERAL NOTES1. DREDGING STAGING AREA SHALL BE COVERED IN GEOTEXTILE FILTER FABRIC THROUGHOUT CONSTRUCTION. DEWATERINGSIZE AND DIMENSIONS ARE APPROX. AREA - 0.83 ACRES, WIDTH - 303 FT, BREADTH - 108 FT2. DREDGING STAGING AREA SHALL BE RESTORED TO PRE-PROJECT CONDITIONS TO THE SATISFACTION OF THE CITY PRIORTO COMPLETION OF THE PROJECT.3. DREDGING SPOILS SHALL BE HAULED TO COLD CANYON LANDFILL PER HAULING ROUTE PLAN ON SHEET C-5 OR ANALTERNATE LOCATION APPROVED BY THE ENGINEER.910(IF PRINTED AT 11x17SCALE IS 1"=100')111203-17-2021
LAGUNA LAKE PARK/NATURAL RESERVEENTRANCELAGUNA LAKEPARKMEMORIAL TREESDISC GOLFCOURSESOUTHEAST ARMOUTLETCULVERTMADONN
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SEE HAUL ROUTE, THIS SHEETTRUCK HAULING ANDLOADING AREADREDGING STAGING AREA1GENERAL NOTES1. SEDIMENTATION BAGS SHALL BE HAULED TO COLD CANYON LANDFILL, LOCATED AT:2268 CARPENTER CANYON ROADSAN LUIS OBISPO, CA 93401. ALTERNATE LOCATIONS MUST BE APPROVED BY THE ENGINEER. CONTRACTOR SHALL BE RESPONSIBLE FOR REMOVINGSEDIMENT FROM BAGS, AND HAULING BAGS TO A DISPOSAL SITE APPROVED BY THE CITY.2. WATER AND SEDIMENT SHALL NOT BE TRACKED ONTO CITY ROADWAYS FROM THE PROJECT SITE. MATERIAL SHALL BESUFFICIENTLY DRY TO HAUL WITHOUT TRACKING OR SHALL BE HAULED IN WATERPROOF CONTAINERS.3. PROVIDE TEMPORARY AREA ADVISORY SIGNS ADVISING CAUTION AT THREE LOCATIONS (VEHICULAR PATH) AND TWO SIGNSON BIKE PATH AT APPROACH TO WORK AREA.CONSTRUCTION NOTES1. PARKING ADJACENT TO THE WORK AREA SHALL BE CLOSED TO THE PUBLIC AND "NO PARKING" SIGNS POSTED DURINGCONSTRUCTION TO FACILITATE MATERIAL LOADING AND HAULING.2. PERMITTED HAUL ROUTE IN BLUE ON MAP BELOW. ALTERNATE ROUTES ARE NOT PERMITTED UNLESS APPROVED BY THEENGINEER.1DATE:PROJECT TITLE:
SHEET TITLE:ofSHEET NO.DESIGNED BY:DRAWN BY:CHECKED BY:APPROVED BY:DRAWING NO.SPEC. NO. 91392CITY SPECIFICATION NO.MAR 2021DATE:PROJECT TITLE:
SHEET TITLE:ofSHEET NO.6DESIGNED BY:KASDRAWN BY:SPCHECKED BY:NPAPPROVED BY:DRAWING NO.Service AlertgroundUnderLAGUNA LAKE 2021 MAINTENANCE
DREDGING PROJECT5
HAULING ROUTE PLANC-5HAUL ROUTE0'0'1001001" = 100'MATERIAL PICK-UP LOOPNOT TO SCALELAGUNA LAKEDREDGINGSTAGINGAREA(IF PRINTED AT 11x17SCALE IS 1"=200')2HAUL ROUTE03-17-2021
115120125113114116117118119121122123124126LAGUNA LAKEPARKSOUTHEAST ARMDEWATERING AREA,SEE SHEET C-4APPROXIMATE SHORELINE ATHIGH WATER LEVEL,ELEVATION 120.5 FT1SAWCUT EXISTING AC TOPROVIDE A CLEAN FINISH≈ 90 LFSHORELINE PROTECTION NOTES1. SHORELINE PROTECTION SHALL BE LIVE STAKED WITH VEGETATION NATIVE TO LAGUNA LAKE.2. LIVE STAKES SHALL BE PLACED 2-3FT DEEP IN THE SOIL BELOW THE RIPRAP AND PROTRUDE OUT. LIVE STAKES SHOULDALSO BE SPACED 2-3FT APART IN A TRIANGULAR SPACING. LIVE STAKES SHALL BE 12 TO 1 12 INCHES IN DIAMETER.3. LIVE STAKES SHOULD BE INSTALLED WHILE DORMANT NOT WITH LEAVES AND ROOTS.4. SHORELINE PROTECTION MEASURES SHALL CONFORM TO CITY OF SAN LUIS OBISPO DRAINAGE DESIGN MANUAL5. RIPRAP SHALL BE 25LB ROCK PER CALTRANS SPECIFICATIONS SECTION 72-2.02B. BACK FILL CUTINGS WITH SOIL PRIOR TOPLACING ROCK.6. MAXIMUM BANK SLOPE SHALL BE 2:1.7. MINIMUM RIPRAP THICKNESS SHALL BE TWO FEET MEASURED PERPENDICULAR TO THE BANK.8. LIMITS OF SHORELINE PROTECTION SHALL BE DETERMINED IN THE FIELD BY CITY STAFF.CONSTRUCTION NOTES1. CONSTRUCT APPROXIMATELY 685 SQUARE YARDS OF SHORELINE PROTECTION PER DETAIL 1, THIS SHEET, AND PERPROJECT SPECIFICATIONS.DATE:PROJECT TITLE:
SHEET TITLE:ofSHEET NO.DESIGNED BY:DRAWN BY:CHECKED BY:APPROVED BY:DRAWING NO.SPEC. NO. 91392CITY SPECIFICATION NO.MAR 2021DATE:PROJECT TITLE:
SHEET TITLE:ofSHEET NO.6DESIGNED BY:KASDRAWN BY:SPCHECKED BY:NPAPPROVED BY:DRAWING NO.Service AlertgroundUnderLAGUNA LAKE 2021 MAINTENANCE
DREDGING PROJECT6
BANK STABILIZATION PLANC-60'0'20'20'1" = 20'BANK STABILIZATION PLANDETAIL 1NOT TO SCALEANCHOR RSP FABRICWITH DEAD STOUT STAKELIVE STAKESRSP FABRICRIPRAPEXISTING SLOPEMATERIALEXISTING PAVEMENTTOE OF SLOPETOP OF BANK ELV = 125 ±ELV 123 ±HIGH WATERELEVATION 120.5(IF PRINTED AT 11x17SCALE IS 1"=40')03-17-2021