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August 1, 2016ADDENDUM NO. 2I16.002.002To The Contract DocumentsFor The Construction Of TheMAIN WIND CONE REPLACEMENT PROJECTat theHALF MOON BAY AIRPORTSAN MATEO COUNTY, CATO ALL HOLDERS OF CONTRACT DOCUMENTS:The following additions and/or corrections shall become part of the Contract Documents andConstruction Specifications for the subject project.Notice to all Contractors submitting bids for this work and to all contractdocument holders.You are hereby notified of the following changes to the Contract Documents, more specifically,to the Bid Proposal Package and the construction plans for this project. This addendum shallsupersede the original contract documents wherein it contradicts the same and shall takeprecedence over anything to the contrary therein. All conditions remain the same.PROJECT PLANS:1. Remove the following plan sheets and replace with the ones contained in this Addendum: G-002, Sheet index, Survey Control and LegendG-003, Main Wind Cone General NotesCG-101, Wind Cone Replacement and Erosion Control PlanCG-501, Wind Cone DetailsEND OF ADDENDUMC&S ENGINEERS, INC.Jessica L. Bryan, P.E., C.M.Department ManagerAugust 1, 2016date8/1/16
RUNWAY/TAXIWAY CENTERLINEEXISTING AIRPORT PROPERTY LINERSAROFZROFAAEXISTING AVIATION EASEMENT BOUNDARYBARRICADE LOCATION WITH WORKAREA DESIGNATIONEXISTING RUNWAY SAFETY AREAWORK AREA LIMITS / STAGING AREASEXISTING RUNWAY OBSTACLE FREE ZONEEXISTING RUNWAY OBJECT FREE AREAEXISTING ROADEXISTING FLOW LINEEXISTING EDGE OF SHRUBS40FLAGPERSON LOCATIONWC/11PROPOSED AIRFIELD LIGHTING CABLE INCONDUIT. "WC/I" DENOTES ONE #8 AWG, 600V,I/C AIRFIELD LIGHTING CABLE IN EXISTING 2"PVC CONDUIT (REMOVE EXISTING CABLE ANDPROVIDE THIS CABLE).EXISTING CONTOUR LINEPROPOSED TAXIWAY EDGE LIGHTEXISTING FENCE LINEPROPOSED LIGHTED WIND CONE. ALL WIND CONEMATERIALS SHALL BE RESISTANT TO CORROSIONAND RUSTEXISTING DOUBLE SWING GATEEXISTING CANTILEVER GATESHEET NO.12345678SHEET REFERENCE NO.G-001G-002G-003G-101G-102G-103CG-101CG-501C&S Engineers, Inc.TITLETITLE SHEETSHEET INDEX, SURVEY CONTROL AND LEGENDMAIN WIND CONE GENERAL NOTESWIND CONE GENERAL PLANCONSTRUCTION SAFETY PHASING PLANMISCELLANEOUS DETAILSWIND CONE REPLACEMENT AND EROSION CONTROL PLANWIND CONE DETAILS8950 Cal Center DriveSuite 112Sacramento, California 95826Phone: 916-364-1470www.cscos.comPROPOSED TRANSFORMEREXISTING BLOCK WALLEXISTING STORM DRAIN PIPEPROPOSED DIRECTION OFCONSTRUCTION TRAFFICEXISTING HEADWALLEX WWEXISTING WATER LINEPROPOSED STABILIZED CONSTRUCTIONENTRANCEEXISTING DOMESTIC WATER METEREX SSF:\Project\I16 - San Mateo County\I16.001.001- Parallel Taxiway Half Moon Bay\Design\CADD\Border\county seal monochrome.bmpEXISTING SANITARY SEWER LINEEXISTING SANITARY SEWER MANHOLEEXISTING SANITARY SEWER CLEANOUTEX GEXISTING GAS LINEEX TEXISTING UNDERGROUND TELEPHONE LINEOH/TEXISTING OVERHEAD TELEPHONE LINEHORIZONTAL DATUM:CALIFORNIA COORDINATE SYSTEM, ZONE 3NORTH AMERICAN DATUM OF 1983 (NAD83), EPOCH 2005.69EXISTING POWER POLEEX EEXISTING UNDERGROUND ELECTRIC LINEOH/EEXISTING OVERHEAD ELECTRIC LINELPEXISTING LIGHT POLEUPEXISTING UTILITY POLEVERTICAL DATUM:NORTH AMERICAN VERTICAL DATUM OF 1988 (NAVD88)EXISTING GUY WIRE AND ANCHORDEXISTING CONCRETE DUCT MARKERCEXISTING CONCRETE CABLE MARKERSEXISTING CONCRETE SPLICE MARKERPROJECT CONTROL:HAF 3N: 2016698.56E: 5982244.66ELEV:EXISTING BOLLARD OR POSTMWHAF 8N: 2016025.82E: 5981499.90ELEV:HAF 9N: 2017650.02E: 5979771.41ELEV:EXISTING MONITORING WELLEXISTING RUNWAY OR TAXIWAY EDGE LIGHTEXISTING AIRFIELD GUIDANCE SIGNEXISTING ELECTRICAL MARKEREEXISTING TRANSFORMEREXISTING WIND CONEEXISTING LIGHTED WIND CONEEMHEXISTING ELECTRICAL MANHOLEPBEXISTING PULLBOXBC-1TEST BORING LOCATIONTP-1TEST PIT LOCATIONEXISTING AIRFIELD LIGHTING CABLE IN TRENCHEXISTING AIRFIELD LIGHTING CABLE IN TRENCHABANDON IN PLACEEXISTING DUCT BANKEXISTING AIRFIELD GUIDANCE SIGNEXISTING TAXIWAY EDGE LIGHTEXISTING TAXIWAY EDGE LIGHT TO REMAINHAF 3EXISTING SURVEY CONTROL POINTEXISTING POWER POLEAMPS - AMPERESABAN. - ABANDONEDAPPROX. - APPROXIMATEASPH. - ASPHALTAST - ABOVE GROUND STORAGE TANKAWG - AMERICAN WIRE GAUGEBC - BEGIN CURVEBFG - BELOW FINISHED GRADEBLDG. - BUILDINGBM - BENCH MARKCIP - CAST IRON PIPECONC. - CONCRETECMP - CORRUGATED METAL PIPECMPA - CORRUGATED ARCHED METAL PIPECND - CONDUITCSP - CORRUGATED STEEL PIPEDIA. - DIAMETEREC - END OF CURVEELEV. - ELEVATIONEOP - EDGE OF PAVEMENTFF - FINISH FLOORFL - FLOW LINEFG - FINISH GRADEFND. - FOUNDATIONFS - FINISH SURFACEGB - GRADE BREAKHP - HIGH POINTIE - INVERT ELEVATIONLT - LEFTLP - LOW POINTMAX. - MAXIMUMMIN. - MINIMUMMISC. - MISCELLANEOUSNA - NOT APPLICABLEOFA - OBJECT FREE AREAO.C. - ON CENTERPAV'T. - PAVEMENTPC - POINT OF CURVATUREPCC - PORTLAND CEMENT CONCRETEPAVEMENTPI - POINT OF INTERSECTIONPT- POINT OF TANGENCYPVI - POINT OF VERTICAL INTERSECTIONPVC - POINT OF CURVATURE (VERTICAL CURVE)PVC - POLYVINYL CHLORIDE PIPEPVT - POINT OF TANGENCY (VERTICAL CURVE)R - RADIUSRCP - REINFORCED CONCRETE PIPEROFA - RUNWAY OBJECT FREE AREARSA - RUNWAY SAFETY AREAROW - RIGHT OF WAYRPZ - RUNWAY PROTECTION ZONERT - RIGHTRW - RUNWAYSHDR. - SHOULDERSICPP - SMOOTH INTERIOR CORRUGATEDPOLYETHYLENE PIPESTA. - STATIONTC - TOP OF CURBTD - TOP OF DIKETF - TOP OF FOOTINGTOFA - TAXIWAY OBJECT FREE AREATSA - TAXIWAY SAFETY AREATW - TOP OF WALLTWY - TAXIWAYTYP. - TYPICALUD - UNDERDRAINWC/1 - (SEE LEGEND ABOVE)11810030302006018-1-16 Addendum 2
C&S Engineers, Inc.8950 Cal Center DriveSuite 112Sacramento, California 95826Phone: 916-364-1470www.cscos.comF:\Project\I16 - San Mateo County\I16.001.001- Parallel Taxiway Half Moon Bay\Design\CADD\Border\county seal monochrome.bmp118-1-16 Addendum 2
FURNISH AND INSTALL PROVIDE NEW PRIMARY WIND CONE AND SUPPORT STRUCTURE.REFER TO SHEET CG-501 FOR DETAILSREMOVE AND DISPOSE OF EXISTING PRIMARY WIND CONE ASSEMBLY, CABLE,FOUNDATION, AND OTHER INCIDENTALS AND DISPOSE OFF-SITEC&S Engineers, Inc.8950 Cal Center DriveSuite 112Sacramento, California 95826Phone: 916-364-1470www.cscos.comCIRCULATORY SEGMENTED CIRCLE CONCRETE TO REMAIN, PROTECT IN PLACEEXISTING WIND CONE BRANCH CIRCUIT CONDUIT AND CABLE TO REMAIN.CONNECT NEW CABLE TO EXISTING WIND CONE STEP-UP TRANSFORMER INELECTRICAL VAULT. REFER TO A1/CG-101 AND C1/CG-501.11CLEAR AND GRUB ALL VEGETATION AND ORGANIC MATERIAL AND DISPOSE OFF-SITECLEAR AND GRUB ALL VEGETATION AND ORGANIC MATERIAL A MINIMUM OF 5' WIDTHALONG LENGTH OF CONDUIT TO BE REMOVED. DISPOSE OF ALL REMOVED MATERIALOFF-SITE.INSTALL SILT FENCE PER DETAIL B1/G-103F:\Project\I16 - San Mateo County\I16.001.001- Parallel Taxiway Half Moon Bay\Design\CADD\Border\county seal monochrome.bmp111118-1-16 Addendum 2
EXISTING WIND CONE BRANCH CIRCUITCONDUIT AND CABLE TO REMAIN.PROPOSED LIGHTED WIND CONEFURNISH AND INSTALLTWO #12 AWG ANDONE #12 AWGGROUND IN 3/4"CONDUITC&S Engineers, Inc.TO EXISTING BRANCHCIRCUIT PANEL8950 Cal Center DriveSuite 112Sacramento, California 95826Phone: 916-364-1470www.cscos.comTYPICAL EXISTING PULLBOX IN FIELD.1'-6"(TYP.)FURNISH AND INSTALL600V, 30A, 2-POLEDISCONNECT SWITCHFUSED AT 15 AMPSEXISTING BRANCHCIRCUIT TO REMAIN2'-0"EXISTINGPULL BOX INSEGMENTEDCIRCLECONNECT NEW #8 AWGCABLE TO EXISTINGSTEP-UP TRANSFORMER1'-0"MIN.FURNISH AND INSTALLTWO #8 AWG 600V 1/CAIRFIELD LIGHTINGCABLES IN 2" CONDUIT1'-0"FURNISH AND INSTALL1 KVA 600V- 120/240VTRANSFORMER1EXISTINGVAULTEXISTING WIND CONESTEP-UP TRANSFORMERTO REMAIN2' TO 5'2'-6" x 2'-6"PROVIDE TWO #8 AWG, 600V, 1/C AIRFIELD LIGHTINGCABLES IN 2" SCHEDULE 40 PVC CONDUIT. COORDINATEBURIAL DEPTH IN FIELD WITH EXISTING PULL BOX.PROVIDE SINGLE PHASE 1KVA 600V 120/240V STEP-DOWN TRANSFORMERIN NEMA-3R 304 STAINLESS STEELENCLOSURE. BASIS OF DESIGN SHALLBE CROUSE-HINDS SG0G11P01P ORAPPROVED EQUAL. PROVIDE 600V,2-POLE, 30A DISCONNECT SWITCHFUSED AT 15A ADJACENT TOTRANSFORMER. REFER TO C1, THISSHEET FOR WIRING DIAGRAM.1EXISTING WIND CONE BRANCHCIRCUIT CONDUIT AND CABLE TOREMAIN. REFER TO A1/CG-101 FORCONTINUATION3'-0"OR AS REQUIREDBY MANUFACTURERF:\Project\I16 - San Mateo County\I16.001.001- Parallel Taxiway Half Moon Bay\Design\CADD\Border\county seal monochrome.bmpCIRCULATORY CONCRETE TOREMAIN, PROTECT IN PLACE1PROVIDE TWO #12 AWG TYPE THHN/THWNCABLE AND ONE #12 AWG GROUNDCONDUCTOR IN 3/4" SCHEDULE 40 PVCCONDUIT. DIRECT BURY AT 24" BFG TO TOPOF CONDUIT.BASIS OF DESIGN FOR PROPOSED WIND CONE SHALL BEHALI-BRITE L-807-S2-IN-120-5 INTERNALLY LIGHTED LED ORAPPROVED EQUAL. PROVIDE ZINC-RICH PRIMER ANDPOWDER COATING FOR WIND CONE SUPPORT STRUCTUREAND FRAMEWORK, FOR CORROSION RESISTANCE. BASISOF DESIGN SHALL BE TIGER SHIELD SERIES 69 ORAPPROVED EQUAL. PROVIDE 120V LED OBSTRUCTIONLIGHT, CROUSE-HINDS RTLSF/120 OR APPROVED EQUAL.8-1-16 Addendum 2
provide two #8 awg, 600v, 1/c airfield lighting cables in 2" schedule 40 pvc conduit. coordinate burial depth in field with existing pull box. provide single phase 1kva 600v - 120/240v step-down transformer in nema-3r 304 stainless steel enclosure. basis of design shall be crouse-hinds sg
