A2_-_Bogue_Banks_Vibracore_Q2_U_Y_SOW.PDF

SCOPE OF WORK

Subsurface Investigation and Geotechnical Laboratory Testing, Bogue Banks Coastal Storm Risk Management Project, Borrow Areas Q2, U, and Y Investigation Carteret County, NC

July 03, 2018

I. GENERAL REQUIREMENTS

1. General. The Contractor shall furnish all services, labor, equipment, supplies, tools and incidentals necessary to perform vibracore sampling, development of drilling logs, laboratory testing of soils, and other services as specified herein. Vibracore borings are located within the Onslow Bay offshore borrow areas designated as Q2, U, and Y (Figure 1). Area Q2 covers nearly 7.0 mi2 and located approximately

3.8 to 6.0 miles seaward from the eastern shoreline of Bogue Banks. Area U is about 5.6 mi2 and located approximately 3.5 to 6.0 miles seaward from the central shoreline of Bogue Banks. Finally, Area Y is nearly 2.0 mi2 and located approximately 1.0 to 3.0 miles seaward from the western side of Bogue Banks. Ocean floor elevations range from about -30 ft. to -60 ft. NAVD88 for these borrow areas.

Vibracore locations denoted within this Scope of Work (SOW) were selected from the analysis of 2011 coring data, as well as geophysical and bathymetry data from 2012 and 2018. Results from drilling performed under this SOW will be evaluated by the Wilmington District of the U.S. Army Corps of Engineers (USACE) to assess in-situ borrow material occurrence, as well as the volume, quality, and suitability for beach fill placement.

2. Responsibility. The Contractor shall furnish qualified personnel to ensure the accomplishment of work specified in this SOW. Additionally, the Contractor shall furnish all services, equipment, personnel, and travel required in connection with this SOW. The Contractor is responsible for maintaining the submittal timeline outlined in Table 1.

3. Direction. The Contractor shall accept directions only from the Wilmington District Contracting Officer (KO), Ms. Charlenne Figgins (910-251-4473) or her designee. Requests or desires of the Users, Using Agency, or any other party made directly to the Contractor shall be immediately brought to the attention of the KO for this Contract. Any changes to this SOW must be authorized in writing by the KO.

4. Request for Payment.

The Contractor shall provide a copy of the invoice on completion of agreed services. The invoice shall be provided through the US Postal Service or email, to the Technical Point of Contact or the Contracting Officer’s Representative (POC/COR) named below. The contractor shall ensure that the following are included on the invoice:

• Contract #

• Invoice #

• Company Name

• Invoiced Line Item(s) must match the Contract Line Item(s)

• Small Business, Veteran Owned, or 8A – If applicable, indicate on invoice

5. Coordination. The COR is Mr. Carl Baynard, P.E. (910-251-4089), and he shall be the Contractor’s point of contact (POC) for all submittals and timeline execution (see Paragraph 9, Submittals Timeline).

The Wilmington District technical POC for this task order is Mr. Walter Haven, P.G. (910-251-4495). In his absence, contact shall be maintained with Mr. Baynard, when addressing technical matters. The Contractor shall designate a project manager who shall be the principal point of contact for the Wilmington District in administering this contract. The Contractor's project manager shall be responsible for all coordination to ensure the work is accomplished in a professional manner. Any directions given that are viewed by the Contractor as a change to the SOW affecting contract fee and time shall be brought to the immediate attention of the KO or the COR.

COR and technical POC mailing and email information follows:

Carl F. Baynard, P.E.

(Carl.F.Baynard@usace.army.mil) U.S. Army Corps of Engineers Wilmington District Attn: Carl Baynard 69 Darlington Avenue Wilmington, NC 28403-1343

Walter T. Haven, P.G.

(Walter.T.Haven@usace.army.mil) U.S. Army Corps of Engineers Wilmington District Attn: Carl Baynard 69 Darlington Avenue Wilmington, NC 28403-1343

II. STATEMENT OF SERVICES

1. Description of Work. The Contractor shall perform a total of 190 vibracore borings for this contract, distributed as follows: 55 borings in Borrow Area Q2; 74 borings in Borrow Area U; and 61 borings in Borrow Area Y. All borings within Areas Q2 and Y shall be advanced to a maximum target depth of 20 feet below the ocean floor. However, from the 74 borings in Area U, 56 shall be advanced to a maximum target depth of 10 feet below the ocean floor, while the remaining 18 borings shall be advanced to a maximum target depth of 20 feet below the ocean floor. Sampling procedures for all borings shall be accomplished in accordance with the paragraph “Vibracore Sampling.” Preliminary and Final Drilling Logs for all borings shall be accomplished in accordance with the paragraph “Drilling Logs.”

In addition to Preliminary and Final Drilling Logs, the Contractor shall take detailed photographs of the cores that highlight changes in lithology. The top and bottom of each boring shall be referenced to the NAVD88 vertical datum. Laboratory testing on USACE-designated samples shall be accomplished in accordance with the paragraph “Laboratory Testing Procedures.”

2. Purpose. Vibracore drilling, sampling, and laboratory testing are necessary to verify the quality and quantity of material remaining within the offshore borrow area, which will be used for the Bogue Banks Coastal Storm Risk Management Project.

3. USACE Furnished Materials. Maps showing vibracore boring locations are provided in Figures 2 through 4. Boring coordinates are provided within Tables 2 through 4 and are referenced to North American Datum (NAD) 1983 Stateplane NC Federal Information Processing Standard (FIPS) 3200 Feet.

A gINT database, which includes the SAW Form 1836-A (Vibracore Boring) that shall be used to generate the drilling logs, will be furnished after contract award. GIS files of borings, project bathymetry, and historical data shall be provided on request. Designated sampling intervals for laboratory testing shall be provided by Wilmington District, based on the Contractor’s Preliminary Drilling Logs.

4. Vibracore Sampling. Vibracore borings shall be performed within 20 feet of the locations provided by the Wilmington District (Tables 2 through 4). Vibracore drilling shall be accomplished by vibrating a sampling tube to the maximum target depths below the ocean floor or to refusal. Penetrometer data mailto:Walter.T.Haven@usace.army.mil collection shall be recorded and presented to verify vibracore refusal. Vibracore refusal is defined as the sampling barrel having a penetration rate of less than 0.2 feet over a 2-minute period. If vibracore refusal is encountered at the sea bed, the Contractor shall offset up to 20 feet and conduct at least two additional vibracore attempts. Each location where refusal is encountered shall be recorded. For each drilled vibracore location, real-time kinematic (RTK) Global Positioning System (GPS) surveying techniques shall be utilized to provide accuracies of 0.2 feet both vertically and horizontally. Boring identification shall be designated according to Tables 2 through 4. Completed vibracores shall be carefully transported to the Contractor’s designated facility for processing, field logging, and visual soils classification. A photographic mosaic log depicting the stratigraphic horizons relative to depth shall be produced for each core. Vibracores shall be field classified and logged in accordance with ASTM D2488 “Standard Practice for Description and Identification of Soils (Visual-Manual Procedure).” The top and bottom of the vibracores and core photos shall be referenced to NAVD88 vertical datum. Once field classification of the core lithology is complete, the Preliminary Drilling Logs, core photographs, and penetrometer records shall be submitted to the Wilmington District to select samples for laboratory testing.

5. Drilling Logs. All drilling logs shall be developed using SAW Form 1836-A (Vibracore Boring), dated June 2016. Preliminary Drilling Logs, at a minimum, shall include the date and time each boring was taken, run time for the boring, the horizontal location of the boring (NAD 1983 Stateplane NC FIPS 3200 Feet), tide-corrected ocean bottom elevation (NAVD88), and a visual description of the stratigraphy and the lithology in accordance with ASTM 2488-09A. Supplemental information including depths for the entire length of recovered material, boring recovery, and refusal depth shall also be denoted. The Wilmington District shall determine the sample intervals to be tested from the Preliminary Drilling Logs, in comparison with core photos and penetrometer data. Samples sent for lab testing shall be designated “S-1, S-2, S-3, etc…” on the drilling logs under “column f” on SAW Form 1836-A, with top and bottom depths listed. Wilmington District review and comment period for the Preliminary and Final Drilling Logs shall be in accordance with the submittal timeline provided in Table 1.

6. Laboratory Testing Procedures. Laboratory testing shall be the responsibility of the Contractor.

Laboratory tests shall be conducted by a USACE validated soils testing lab, or a North Carolina Department of Transportation soils testing lab. A listing of USACE validated laboratories is available at:

http://www.erdc.usace.army.mil/Media/Fact-Sheets/Fact-Sheet-Article-View/Article/476661/materials-testing-center/. For estimating purposes, 5 samples are proposed to be collected from each 20-ft. core for laboratory testing, while 3 samples are proposed to be collected from each 10-ft. core. The maximum number of samples for which laboratory testing is required shall not exceed 838 samples. The Wilmington District shall determine the depth intervals for each test sample based on the Preliminary Drilling Logs. Draft lab test results shall be submitted to the COR or technical POC in accordance with the submittal timeline provided in Table 1. The final laboratory test results shall be included in the Final Report and on the Final Drilling Logs. The laboratory test reports shall include the project name, laboratory name, boring number, sample identification number and date the sample was tested.

Three (3) test procedures shall be performed on each sample:

1) ASTM D6913, “Particle-Size Distribution (Gradation) of Soils Using Sieve Analysis”. The following sieve sizes shall be used: 3/4-in., 3/8-in., No. 4, No. 7, No. 10, No. 14, No. 18, No. 25, No. 35, No.

45, No. 60, No. 80, No. 120, No. 170, No. 200, and No. 230;

2) ASTM D2487 “Standard Practice for Classification of Soils for Engineering Purposes (Unified Soils Classification System);” and http://www.erdc.usace.army.mil/Media/Fact-Sheets/Fact-Sheet-Article-View/Article/476661/materials-testing-center/ http://www.erdc.usace.army.mil/Media/Fact-Sheets/Fact-Sheet-Article-View/Article/476661/materials-testing-center/

3) Visual, volumetric percentage of shell and rock fragment determination. Visual percent shell content and visual percent rock fragment content shall be estimated for the 3/4-in., 3/8-in., and No. 4 sieve sizes.

7. Cost Proposal. The Contractor shall submit a sampling plan to USACE as part of his or her proposal.

The sampling plan shall include the type of vibracore machine, the size of the vibracore tube, the material from which the tubes are made, the size and description of the vessel(s) to be used, the number of boat and drill crew members, the qualifications of the laboratory performing analyses, and a description of the survey equipment to be used to collect coordinate and elevation data. For the cost proposal, the Contractor shall assume 190 vibracore borings, 838 soil gradation tests, 838 soil classifications, 838 visual determinations of shell and rock fragment content for the no.4, 3/8 in., and ¾

in. sieves, 190 Preliminary Drilling Logs in gINT format, 190 photographic mosaic logs, a gINT database, an Excel summary spreadsheet of all laboratory data, and a Final Report including Final Drilling Logs and laboratory analyses. The estimate shall include daily costs for vessel operation and number of days required for the vibracore drilling effort.

8. Reporting Requirements. The Contractor shall furnish a preliminary field data package and a Final Report to the Wilmington District. The preliminary field data package shall consist of the following:

Preliminary Drilling Logs; core photographic mosaics; and penetrometer data. These items shall be submitted within 21 calendar days of completing drilling operations, in accordance with the submittals timeline on Table 1. The core photographic mosaics, penetrometer data and drilling logs shall be submitted at the same time to allow USACE to select samples for testing. USACE review and feedback of Contractor submittals shall be in accordance with the submittal timeline shown in Table 1. A Draft Final Report shall be submitted to USACE for review and final comment. The Final Report shall include a description of the work, a map with the final vibracore boring locations, Final Drilling Logs, penetrometer records, core photographic mosaics, and lab test data, complete with gradation tables and curves for each sample tested and a summary table. In addition to the hard copy of the Final Report, the Contractor shall furnish electronic/digital files containing all the lab test data in Excel and PDF formats, the gINT project database file, and ArcGIS shapefiles, layers, or feature classes showing vibracoring locations. Electronic/digital lab test data files shall contain the project name at the top, boring number, sample identification number, depth of sample, visual classification, and percentage passing each sieve (highlight #200 sieve), visual percent of rock and shell content, and the mean and median grain size for each sample.

9. Submittals Timeline. The Contractor is responsible for maintaining the Submittal Timeline shown below.

Table 1. Submittals Description and Timeline.

Event Expected Duration USACE Responsibility

Contractor Responsibility

Contract Award 1 Calendar Day E-Verify (Initial) List of Designated Employees Submittal

2 Business Days

Safety Plan Submittal 4 Calendar Days USACE Safety Plan Approval 3 Business Days Notice to Proceed 1 Business Day Mobilization & Drilling 32 Calendar Days

Cut, Photograph & Log Vibracores

20 Calendar Days

Preliminary Drilling Log, Photograph & Penetrometer Submittal

1 Calendar Day

USACE Sample Selection 4 Business Days

USACE Review & Comment Preliminary Logs

4 Business Days

Draft Lab Test Submittal 24 Calendar Days from USACE sample selection

Draft Final Report Submittal 6 Calendar Days from Contractor 's receipt of lab data

USACE Review & Comment Draft Final Report

3 Business Days

Final Report Submittal 4 Calendar Days

Contract Closeout 10 Calendar Days Approximate Total 120 Calendar Days

If the Contractor encounters unforeseen delays in meeting an event on the timeline, he or she shall notify the KO and COR in writing no earlier than 5 business days prior to the due date. The Contractor shall describe the circumstances that led to the delay, his or her immediate actions to mitigate impacts to schedule, and event/timeline updates.

Submittals shall be sent electronically to the KO, COR and Technical POC’s listed below:

• Charlenne.L.Figgins@usace.army.mil (or her designee);

• Carl.F.Baynard@usace.army.mil; and

• Walter.T.Haven@usace.army.mil.

The Final Report shall be bound and titled; “Subsurface Investigation and Geotechnical Laboratory Testing Results, Bogue Banks Coastal Storm Risk Management Project, Borrow Areas Q2, U, and Y Investigation,” containing all the elements and meeting the requirements herein. One hard copy of the Final Report shall be submitted by the Contractor, and deemed acceptable by USACE before final payment is made.

Final Submittals shall be made to the following recipient:

Mr. Carl Baynard, P.E. (CESAW-ECP-EG), Civil Engineer, Geotechnical and Dam Safety Section, 69 Darlington Avenue, Wilmington, NC 28403-1343.

One hard copy of the Final Report shall be mailed to Mr. Carl Baynard and a digital copy shall be provided to the technical POC, Mr. Haven.

10. Safety. Safety of all parties is a major concern. The Contractor shall coordinate the work effort with the U. S. Coast Guard and comply with all their requirements and requests. The Contractor shall ensure that drilling operations have a minimal effect on navigation. The Contractor shall comply with guidance established in the Corps of Engineers Safety Manual, EM 385-1-1, dated 30 NOV 2014 and any applicable State, Federal, and U. S. Coast Guard regulations. The Contractor shall submit an Accident Prevention Plan to USACE for approval no more than four (4) calendar days following contract award. No field work shall be performed until the plan is approved by USACE. The plan shall follow the guidelines established in EM 385-1-1 to include: the location of the work site; verified emergency contact information for the local US Coast Guard station(s); evacuation plan to the nearest medical facility;

emergency radio frequencies and telephone numbers; required safety equipment; certified first aid personnel; spill prevention and HAZMAT information; and an Activity Hazard Analysis. The Contractor shall be responsible for conducting a daily Safety Brief and Risk Assessment prior to commencing work each day. All personnel shall be properly clothed and protected for working on the water. Wilmington District reserves the right to halt drilling operations for any safety violation. The Wilmington Safety Officer is Mr. Bill Harris and he may be reached at 910-251-4698.

11. Anti-Terrorism and Operations Security.

The contractor shall pre-screen candidates using the E-Verify Program (http://www.uscis.gov/e-verify) website to meet the established employment eligibility requirements. The vendor shall ensure that each Candidate has two valid forms of government issued identification prior to enrollment to ensure the correct information is entered into the E-Verify System. An initial list of verified/eligible candidates shall be provided to the COR no later than 2 business days after the initial contract award. When contracts are with individuals, the individuals shall be required to complete a Form I-9, Employment Eligibility Verification, with the designated Government representative. This Form shall be provided to the KO and shall become part of the official contract file.

mailto:Charlenne.L.Figgins@usace.army.mil mailto:Carl.F.Baynard@usace.army.mil mailto:Walter.T.Haven@usace.army.mil http://www.uscis.gov/e-verify

12. Boring Coordinates and Figures.

Table 2. Coordinates for Bogue Banks Storm Damage Reduction Project, Borrow Site Q2 Vibracore Targets. Horizontal Datum is NAD 1983 Stateplane NC FIPS 3200 Feet.

Vibracore No. Easting Northing Maximum Target Depth BB-18-Q-01 2681623.854 329251.0242 20 ft.

BB-18-Q-02 2681458.064 328257.5586 20 ft.

BB-18-Q-03 2682399.991 329247.6158 20 ft.

BB-18-Q-04 2682023.83 327406.7164 20 ft.

BB-18-Q-05 2682817.056 327037.95 20 ft.

BB-18-Q-06 2683461.707 330418.0082 20 ft.

BB-18-Q-07 2683444.284 329512.0133 20 ft.

BB-18-Q-08 2683339.746 328675.7102 20 ft.

BB-18-Q-09 2683567.371 327742.9765 20 ft.

BB-18-Q-10 2683635.937 326846.2972 20 ft.

BB-18-Q-11 2683181.72 326190.303 20 ft.

BB-18-Q-12 2683252.631 325313.0749 20 ft.

BB-18-Q-13 2684385.125 331341.4262 20 ft.

BB-18-Q-14 2684390.44 328919.1391 20 ft.

BB-18-Q-15 2684402.548 327281.8717 20 ft.

BB-18-Q-16 2684348.093 325172.106 20 ft.

BB-18-Q-17 2685622.156 331306.5803 20 ft.

BB-18-Q-18 2685231.027 329612.5673 20 ft.

BB-18-Q-19 2685360.812 328797.671 20 ft.

BB-18-Q-20 2685430.504 327037.95 20 ft.

BB-18-Q-21 2685371.318 326273.7504 20 ft.

BB-18-Q-22 2685378.235 325243.383 20 ft.

BB-18-Q-23 2686632.689 331289.1573 20 ft.

BB-18-Q-24 2686600.766 329508.9605 20 ft.

BB-18-Q-25 2687009.118 328765.2535 20 ft.

BB-18-Q-26 2686425.376 325314.2263 20 ft.

BB-18-Q-27 2687147.553 332293.7244 20 ft.

BB-18-Q-28 2687407.795 331423.2761 20 ft.

BB-18-Q-29 2687442.641 330586.9731 20 ft.

BB-18-Q-30 2687462.491 327264.9769 20 ft.

BB-18-Q-31 2687399.3 326201.6469 20 ft.

BB-18-Q-32 2687834.875 325278.2289 20 ft.

BB-18-Q-33 2688365.583 331303.3296 20 ft.

BB-18-Q-34 2688688.118 327177.0218 20 ft.

BB-18-Q-35 2689358.324 325247.6158 20 ft.

BB-18-Q-36 2689394.708 332269.9755 20 ft.

BB-18-Q-37 2689420.366 331254.3113 20 ft.

BB-18-Q-38 2689333.251 330104.3946 20 ft.

BB-18-Q-39 2689402.943 329076.4387 20 ft.

BB-18-Q-40 2689467.083 328249.0696 20 ft.

BB-18-Q-41 2689659.824 327591.2908 20 ft.

BB-18-Q-42 2690361.069 327079.5737 20 ft.

BB-18-Q-43 2691346.689 330363.2049 20 ft.

BB-18-Q-44 2691424.009 329146.1307 20 ft.

BB-18-Q-45 2691371.74 328240.1357 20 ft.

BB-18-Q-46 2692451.119 329301.8199 20 ft.

BB-18-Q-47 2693457.647 330271.4907 20 ft.

BB-18-Q-48 2693408.089 329366.6992 20 ft.

BB-18-Q-49 2693376.509 328336.5574 20 ft.

BB-18-Q-50 2694312.334 329296.2753 20 ft.

BB-18-Q-51 2695309.334 330226.3555 20 ft.

BB-18-Q-52 2695310.454 329320.2631 20 ft.

BB-18-Q-53 2695551.381 328302.5017 20 ft.

BB-18-Q-54 2695758.989 330723.2205 20 ft.

BB-18-Q-55 2696360.099 329269.3802 20 ft.

Table 3. Coordinates for Bogue Banks Storm Damage Reduction Project, Borrow Site U Vibracore

BB-18-U-01 2625825.255 318661.1515 20 ft.

BB-18-U-02 2626229.565 317602.7996 10 ft.

BB-18-U-03 2625797 316728.9645 10 ft.

BB-18-U-04 2626797 318728.9645 10 ft.

BB-18-U-05 2627227.179 317257.4351 20 ft.

BB-18-U-06 2626642.674 316106.2053 20 ft.

BB-18-U-07 2627808.302 318909.799 10 ft.

BB-18-U-08 2628084.718 317960.1995 20 ft.

BB-18-U-09 2627831.722 316249.7978 20 ft.

BB-18-U-10 2628797 316728.9645 10 ft.

BB-18-U-11 2629797 319728.9645 10 ft.

BB-18-U-12 2630005.333 316746.3256 10 ft.

BB-18-U-13 2630797 320728.9645 20 ft.

BB-18-U-14 2630797 319728.9645 10 ft.

BB-18-U-15 2630797 318728.9645 10 ft.

BB-18-U-16 2631738.507 320850.4677 10 ft.

BB-18-U-17 2631871.888 319495.3131 20 ft.

BB-18-U-18 2631797 317728.9645 10 ft.

BB-18-U-19 2632674.291 322220.5979 10 ft.

BB-18-U-20 2632797 320728.9645 10 ft.

BB-18-U-21 2632797 319728.9645 10 ft.

BB-18-U-22 2632838.91 318247.0013 20 ft.

BB-18-U-23 2633797 322728.9645 10 ft.

BB-18-U-24 2633797 321728.9645 10 ft.

BB-18-U-25 2633765.725 320569.4359 20 ft.

BB-18-U-26 2633797 319728.9645 10 ft.

BB-18-U-27 2633797 318728.9645 10 ft.

BB-18-U-28 2633768.116 317527.1719 20 ft.

BB-18-U-29 2634779.639 323347.02 10 ft.

BB-18-U-30 2634797 322364.3811 10 ft.

BB-18-U-31 2634797 321440.77 10 ft.

BB-18-U-32 2634796.807 320583.2524 10 ft.

BB-18-U-33 2634922.381 319641.4514 10 ft.

BB-18-U-34 2634797 318728.9645 10 ft.

BB-18-U-35 2634797 317728.9645 10 ft.

BB-18-U-36 2635742.558 323799.6812 10 ft.

BB-18-U-37 2635719.687 321877.8548 20 ft.

BB-18-U-38 2635805.423 320603.4978 10 ft.

BB-18-U-39 2635770.002 319657.1481 10 ft.

BB-18-U-40 2635727.362 318724.167 10 ft.

BB-18-U-41 2635797 317728.9645 10 ft.

BB-18-U-42 2636797 326728.9645 20 ft.

BB-18-U-43 2636797 325728.9645 10 ft.

BB-18-U-44 2636797 324728.9645 10 ft.

BB-18-U-45 2637255.333 323708.1311 10 ft.

BB-18-U-46 2636797 322728.9645 20 ft.

BB-18-U-47 2636797 319728.9645 10 ft.

BB-18-U-48 2636797 318728.9645 10 ft.

BB-18-U-49 2637797 327728.9645 10 ft.

BB-18-U-50 2637797 326728.9645 10 ft.

BB-18-U-51 2637797 325728.9645 20 ft.

BB-18-U-52 2637797 324728.9645 10 ft.

BB-18-U-53 2637797 322728.9645 10 ft.

BB-18-U-54 2637776.934 318710.306 10 ft.

BB-18-U-55 2638797 327728.9645 10 ft.

BB-18-U-56 2638797 325728.9645 10 ft.

BB-18-U-57 2638909.338 324711.4799 10 ft.

BB-18-U-58 2638701.651 323798.8365 10 ft.

BB-18-U-59 2638797 322728.9645 20 ft.

BB-18-U-60 2638630.333 319312.2978 10 ft.

BB-18-U-61 2639797 327728.9645 10 ft.

BB-18-U-62 2639297 326728.9645 10 ft.

BB-18-U-63 2639797 325728.9645 20 ft.

BB-18-U-64 2639983.129 324714.7184 10 ft.

BB-18-U-65 2640635.975 323368.5737 20 ft.

BB-18-U-66 2639481.462 321991.9127 10 ft.

BB-18-U-67 2639582.974 319531.2176 10 ft.

BB-18-U-68 2640297 326728.9645 10 ft.

BB-18-U-69 2640797 325728.9645 10 ft.

BB-18-U-70 2640797 321728.9645 10 ft.

BB-18-U-71 2640797 320728.9645 10 ft.

BB-18-U-72 2641678.711 324200.2063 10 ft.

BB-18-U-73 2641838.667 322666.4645 20 ft.

BB-18-U-74 2642726.88 323115.4187 10 ft.

Table 4. Coordinates for Bogue Banks Storm Damage Reduction Project, Borrow Site Y Vibracore

BB-18-Y-01 2583630.53 327731.6706 20 ft.

BB-18-Y-02 2583995.113 326898.3372 20 ft.

BB-18-Y-03 2584424.8 326051.9831 20 ft.

BB-18-Y-04 2584764.666 325423.521 20 ft.

BB-18-Y-05 2585320.78 325155.7394 20 ft.

BB-18-Y-06 2585272.632 324602.296 20 ft.

BB-18-Y-07 2585737.447 324231.2602 20 ft.

BB-18-Y-08 2585628.36 323684.3229 20 ft.

BB-18-Y-09 2586441.072 323261.0434 20 ft.

BB-18-Y-10 2586758.85 322450.2002 20 ft.

BB-18-Y-11 2586961.405 321640.1144 20 ft.

BB-18-Y-12 2587198.238 321104.0664 20 ft.

BB-18-Y-13 2587432.613 320023.3372 20 ft.

BB-18-Y-14 2584901.974 328390.6783 20 ft.

BB-18-Y-15 2585381.832 327414.8303 20 ft.

BB-18-Y-16 2585101.884 326611.8789 20 ft.

BB-18-Y-17 2585820.645 326674.361 20 ft.

BB-18-Y-18 2586086.331 326102.5827 20 ft.

BB-18-Y-19 2585964.859 324905.3353 20 ft.

BB-18-Y-20 2587117.943 324333.2331 20 ft.

BB-18-Y-21 2586978.76 323560.5949 20 ft.

BB-18-Y-22 2587444.075 322758.4678 20 ft.

BB-18-Y-23 2587523.759 321729.0664 20 ft.

BB-18-Y-24 2588070.634 322093.6497 20 ft.

BB-18-Y-25 2589008.134 320413.9622 20 ft.

BB-18-Y-26 2585710.71 328597.9674 20 ft.

BB-18-Y-27 2586424.578 327831.4008 20 ft.

BB-18-Y-28 2586724.387 327241.603 20 ft.

BB-18-Y-29 2586528.852 326638.0043 20 ft.

BB-18-Y-30 2586886.568 325843.8462 20 ft.

BB-18-Y-31 2588012.699 324366.9361 20 ft.

BB-18-Y-32 2588254.513 323742.8149 20 ft.

BB-18-Y-33 2588409.175 323200.4206 20 ft.

BB-18-Y-34 2588982.092 321481.6706 20 ft.

BB-18-Y-35 2586335.466 328992.257 20 ft.

BB-18-Y-36 2586944.103 329065.1604 20 ft.

BB-18-Y-37 2587099.436 328391.6676 20 ft.

BB-18-Y-38 2587319.413 327804.6559 20 ft.

BB-18-Y-39 2587531.985 327299.2886 20 ft.

BB-18-Y-40 2588030.555 326646.3158 20 ft.

BB-18-Y-41 2588397.27 325703.3197 20 ft.

BB-18-Y-42 2588820.298 325261.0633 20 ft.

BB-18-Y-43 2588809.728 324429.529 20 ft.

BB-18-Y-44 2588897.394 323465.207 20 ft.

BB-18-Y-45 2589425.997 323838.1512 20 ft.

BB-18-Y-46 2590075.842 321624.8997 20 ft.

BB-18-Y-47 2587522.371 329418.2738 20 ft.

BB-18-Y-48 2587874.628 328666.7013 20 ft.

BB-18-Y-49 2588151.899 327955.2025 20 ft.

BB-18-Y-50 2588543.221 327353.3483 20 ft.

BB-18-Y-51 2588840.967 326671.1338 20 ft.

BB-18-Y-52 2589205.551 326070.059 20 ft.

BB-18-Y-53 2589476.869 325342.2154 20 ft.

BB-18-Y-54 2588782.738 328331.0518 20 ft.

BB-18-Y-55 2589417.629 326863.5573 20 ft.

BB-18-Y-56 2588820.298 329898.9874 20 ft.

BB-18-Y-57 2588989.281 329319.2972 20 ft.

BB-18-Y-58 2589386.892 328621.1422 20 ft.

BB-18-Y-59 2589586.889 327740.4565 20 ft.

BB-18-Y-60 2589618.7 330022.6384 20 ft.

BB-18-Y-61 2589704.81 329308.6712 20 ft.

Figure 1. Bogue Banks Borrow Areas within Onslow Bay.

Figure 2. Borrow Area Q2 Vibracore Locations. Only the last three figures of each boring identification number are shown for map clarity. Please refer to Table 2 for complete boring nomenclature.

Figure 3. Borrow Area U Vibracore Locations. Only the last three figures of each boring identification number are shown for map clarity. Please refer to Table 3 for complete boring

Figure 4. Borrow Area Y Vibracore Locations. Only the last three figures of each boring identification number are shown for map clarity. Please refer to Table 4 for complete boring