Appendix C-1_Drawing STA Vallejo Dredge_Hydro survey 11June21.pdf

PDF 574 KB Posted Jul 2, 2021

Attached to: BID ABSTRACT for Invitation to Bid# 70Z08821BPQQ17700, Maintenance Dredging at USCG Station Vallejo in Vallejo, CA
Solicitation number: 70Z08821BPQQ17700
Issued by: Department of Homeland Security US Coast Guard

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Written by GovTribe AI · Dec 28, 2023

This document package includes an invitation for bid for maintenance dredging services at the United States Coast Guard Station in Vallejo, California. Key details include:

Major work items are conducting maintenance dredging with a clamshell bucket, hydrographic surveys before and after dredging, disposing of dredge spoils at an approved beneficial reuse site in Northern California, providing internet monitoring of dredging operations, complying with environmental permits, and temporarily removing and reinstalling floating docks. The approved in-water work window is August 1 to November 30, 2021.
The procurement estimate is between $500,000 and $1,000,000. The requirement is issued as an invitation for bid resulting in a single firm fixed price contract. Bids are due by August 15, 2021 and must include pricing, representations and certifications, and a bid bond. The Department of Homeland Security United States Coast Guard is the contracting agency.

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Other files

File	Type	Posted
BID ABSTRACT_IFB 70Z08821BPQQ17700_signed.pdf	PDF	Aug 5, 2021
Amendment 3B_R2_401_USCGVallejo_792396.pdf	PDF	Jul 27, 2021
Amendment 0003_BPQQ177_Updated Env Permits_.pdf	PDF	Jul 27, 2021
Amendment 3A_C2007.005.07_U.S.CoastGuardFINALPERMIT.pdf	PDF	Jul 27, 2021
Amendment 3C_SPN-2008-00049_USCG Vallejo 1st Transmittal_07262021.pdf	PDF	Jul 27, 2021
Amendent 0002_Correction to Pricing Schedule_IFB SECTION B_PAGE 4.pdf	PDF	Jul 13, 2021
Amendment 0002_BPQQ177_RFI 0001_Revised SF1442_Pricing Schedule.pdf	PDF	Jul 13, 2021
Amendment 0002_Revised SF1442-14b_STAVALLEJO DREG_PQQ177.pdf	PDF	Jul 13, 2021
Corrected_Amendment 0001_BPQQ177_Ext to August 3_change to bid submittal instructions.doc.pdf	PDF	Jul 12, 2021
Amendment 0001_BPQQ177_Ext to August 3 and Electronic Bid Instructions.pdf	PDF	Jul 7, 2021
Appendix A_SF1442-14b_USCG STA VALLEJO DREG_PQQ177.pdf	PDF	Jul 2, 2021
Appendix C-2_Floating Dock Specs_For Information Only.pdf	PDF	Jul 2, 2021
Appendix E_Contractor Responsibility.pdf	PDF	Jul 2, 2021
Appendix B_Permits.pdf	PDF	Jul 2, 2021
Appendix G_CERTIFICATE OF AUTHORIZATION TO BIND CORPORATION FAR 4.pdf	PDF	Jul 2, 2021
Invitation for bid_70Z08821BPQQ17700 Maintenance Dredging at USCG Station Vallejo in Vallejo.docx	DOCX document	Jul 2, 2021
Appendix D_Wage Determination CA2021007_06052021.pdf	PDF	Jul 2, 2021
Appendix C_StaVallejo Dredging Specs2021_June18.pdf	PDF	Jul 2, 2021
Appendix F_Clarification Request Form.pdf	PDF	Jul 2, 2021

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2300 CLAYTON ROAD, SUITE 1200

CONCORD, CA 94520-2176

925.682.6976 TEL WWW.TOWILL.COM

SURVEYING | MAPPING | GIS

C-1

18 June 2021

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TIMBER FLOATING DOCK

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CONC. FLOATING DOCK

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FIXED WALKWAY

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SHOAL "CUT OFF PILING"

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JET DOCK

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TIMBER FLOATING DOCK

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TIMBER FLOATING DOCK

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TIDE BOARD ON PILING

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MARE ISLAND STRAIT

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FLOOD

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CUT-OFF PILES

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MHHW (5.75' MLLW)

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EXISTING GRADE

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2-FOOT OVERDREDGE

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BB&E, INC.

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DIXON MARINE SERVICES, INC.

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U. S. COAST GUARD

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USCG. CEU OAKLAND

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KMK

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HYDROGRAPHIC SURVEY

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CONDITION SURVEY

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OAKLAND

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OAKLAND, CALIFORNIA 94612

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VALLEJO, CA

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CIVIL

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STATION VALLEJO

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1301 CLAY ST, SUITE 700N

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CIVIL ENGINEERING UNIT

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MS / JTM

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USCG VALLEJO

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(248) 489-9636

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CONSULTANTS

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REVIEWED BY:

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DATE

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AutoCAD SHX Text NOTES: 1. BATHYMETRIC DATA IS FROM A SURVEY CONDUCTED BY DIXON MARINE BATHYMETRIC DATA IS FROM A SURVEY CONDUCTED BY DIXON MARINE SERVICES, INC. ON 6/11/2021 AND REPRESENTS THE SEA FLOOR CONDITIONS PRESENT ON THAT DATE. THE HYDROGRAPHIC SURVEY WAS CONDUCTED USING CLASS 1 HYDROGRAPHIC SURVEY METHODS AND ACCURACIES OUTLINED IN THE CORPS OF ENGINEERS' HYDROGRAPHIC SURVEYING MANUAL (EM 1110-2-1003, JANUARY 2002). THE SURVEY WAS PERFORMED USING A 20' SURVEY VESSEL, TRIMBLE 865 RTK GPS NAVIGATION SYSTEM, AND ROSS 875-5 SURVEY-GRADE FATHOMETER. 2. ROVER MEASUREMENTS WERE TAKEN WITH AN R-8 ALONG THE PERIMETER OF ROVER MEASUREMENTS WERE TAKEN WITH AN R-8 ALONG THE PERIMETER OF THE COAST GUARD STATION DOCK, AS WELL AS THE NORTH-WEST CORNER OF DOCK B TO DETERMINE MUD-LINE DEPTH. 3. HORIZONTAL DATUM IS BASED ON THE CALIFORNIA STATE PLANE COORDINATE HORIZONTAL DATUM IS BASED ON THE CALIFORNIA STATE PLANE COORDINATE SYSTEM, ZONE 2 (NAD 1983). SOUNDINGS ARE IN FEET BELOW MEAN LOWER LOW WATER (MLLW), AS REFERENCED TO NGS BENCHMARK "82 A"/PID-JT0326 (22.24 MLLW) LOCATED AT THE SOUTHEAST CORNER OF MARE ISLAND CAUSEWAY. 4. THE NGS HAS CONFLICTING TIDAL CONVERSIONS IN THIS AREA. DMS IS USING THE NGS HAS CONFLICTING TIDAL CONVERSIONS IN THIS AREA. DMS IS USING THE ONE LISTED BELOW AT STATION 9415218 WITH THE DATA LISTED BELOW. THE SOUNDING DATA WERE ADJUSTED 0.36 FT. UP TO MLLW. 5. DOCK CORNERS AND LANDSIDE WALKWAY AND SLOPES MAPPED USING DOCK CORNERS AND LANDSIDE WALKWAY AND SLOPES MAPPED USING CONVENTIONAL LAND SURVEY PRACTICES WITH TOTAL STATION AND RTK GPS. 6. MAJOR CONTOURS ARE GENERATED AT 5' INTERVALS MLLW. MAJOR CONTOURS ARE GENERATED AT 5' INTERVALS MLLW. 7. NEGATIVE SPOT ELEVATIONS (-1.8) INDICATE ELEVATION ABOVE MLLW. NEGATIVE SPOT ELEVATIONS (-1.8) INDICATE ELEVATION ABOVE MLLW. 8. DREDGE DEPTH IS 10FT BELOW MLLW WITH 2FT OVERDREDGE. DREDGE DEPTH IS 10FT BELOW MLLW WITH 2FT OVERDREDGE. 9. DREDGE VOLUME WAS CALCULATED BY CREATING SURFACES FOR EXISTING DREDGE VOLUME WAS CALCULATED BY CREATING SURFACES FOR EXISTING GRADE AND THE DREDGE TEMPLATE AND UTILIZING AUTOCAD CIVIL 3D 2016 CUT TO -10' TEMPLATE BOTTOM = 6,527.36 cyd CUT TO SIDE SLOPES = 1,210.62 cyd WITH 1FT OVERDREDGE = 8,226.24 cyd WITH 2FT OVERDREDGE = 9,694.70 cyd

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DREDGE LIMITS

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BENCHMARK NAIL IN CONCRETE 8.96' MLLW

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12786 SIR FRANCIS DRAKE BLVD INVERNESS, CA 94937

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235 EAST MAIN ST, SUITE 107 NORTHVILLE, MI 48167

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TYPICAL CROSS-SECTION OF VALLEJO GUARD STATION

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File details come from the government source that posted it. Updated Jul 2, 2021.