A2_-_03_Folly_Beach_GRR_Vibracore_SOW_140Cores.pdf

SCOPE OF WORK

Subsurface Investigation and Geotechnical Laboratory Testing, Folly Beach, Charleston County, SC

March 7, 2019

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. A total of 140 vibracore borings are to be drilled offshore of Folly Beach and Sullivan’s Island, Charleston County, SC (Figures 1 and 2). The borings shall be drilled in two phases, as described below in “Statement of Services”. Within the investigation area, the ocean floor elevation ranges from about -14 ft. to -40 ft. MLLW within this area. Vibracore locations denoted within this Scope of Work (SOW) were selected based upon previous subsurface investigations and historical geophysical and hydrographic surveys. 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 for the life of the project.

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), Mr. Terry Hester (910-251-4580) or his 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. Kelley Kaltenbach, P.G. (910-251-4879).

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

Kelley J. Kaltenbach, P.G.

(kelly.j.kaltenbach@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 140 vibracore borings for this project, to be drilled in two phases. Phase 1 shall begin immediately upon receipt of the notice of award. The Contractor shall mobilize to the site within five (5) business days of the notice of award and execute the drilling of a pre-designated array of 53 x borings to a termination depth of 10 feet below ocean floor.

The location and coordinates of the Phase 1 borings are shown in Figures 1 and 2, and in Table 1. Phase 1 will conclude upon the completion of these borings. Phase 1 preliminary drilling logs (FB-19-V-01 through FB-19-V-43 only) shall be submitted to USACE within 30 calendar days of the notice of award.

Phase 2 will be initiated within 5-buisness days of the completion of Phase 1. The Contractor shall execute drilling the remaining eighty-seven (87) borings (Coordinates TBD) during Phase 2. These borings shall be pre-located by USACE, based upon the initial drilling logs from the Phase 1 drilling, and they shall be drilled to a termination depth of 10 feet below ocean floor. Throughout drilling execution, the Contractor shall provide USACE field results and preliminary drilling logs to allow USACE to develop vibracore targets for Phase 2, and to assign lab testing intervals. The Contractor shall thoroughly communicate field findings from each vibracore boring to USACE within ten (10) calendar days of borehole completion, which includes preliminary drilling logs and all field documentation. All borings shall be horizontally referenced to North American Datum (NAD) 1983 State Plane South Carolina International Feet. 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 Folly Beach Coastal Storm Risk Management Project.

3. USACE Furnished Materials. A map showing the Phase 1 vibracore boring locations is provided in Figures 1 and 2, and the target coordinates are provided in Table 1. Phase 2 vibracore target locations shall be developed by USACE, based upon the preliminary drilling log submittals from the Contractor. A file:///C:/Users/k7ecpwth/Documents/Carolina_Kure_Beach/Carl.F.Baynard@usace.army.mil mailto:kelly.j.kaltenbach@usace.army.mil 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 existing borings, NOAA charts, project bathymetry, and historical data (if available) shall also be provided. 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 (see Table 1). Vibracore drilling shall be accomplished by vibrating a sampling tube to the maximum target depths below the ocean floor or to refusal. Penetrometer data 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. 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 and to select vibracore targets for Phase 2 vibracore borings. Borings drilled offshore of Folly Beach will be designated as the following “FB-19-V-#”, while those drilled offshore of Sullivan’s Island will be designated “SI-19-V-#”.

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 State Plane SC International 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 2.

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, 4 samples are proposed to be collected from each 10-ft. core for laboratory testing. The maximum number of samples for which laboratory testing is required shall not exceed 560 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 2. The final laboratory test results shall be included in the Final Report and on the Final Drilling Logs. The laboratory test reports 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/ 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

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 quote. 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; 140 total vibracore borings to be drilled in two phases; 560 soil gradation tests, 560 soil classifications, 560 visual determinations of shell and rock fragment content for the no. 4, 3/8 in., and ¾ in. sieves, 140 Preliminary Drilling Logs in gINT format, 140 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. Phase 1 preliminary drilling logs (FB-19-V-01 through FB-19-V-43 only) shall be submitted to USACE within 30 calendar days of the notice of award. The Contractor shall furnish preliminary drilling logs with data updates and a Final Report to the Wilmington District. The Contractor shall provide USACE field results and preliminary drilling logs to allow USACE to select samples for lab testing and to develop new targets for the Phase 2 vibracore borings. In order to effectively target the Phase 2 borings and assign lab testing intervals, the Contractor shall thoroughly communicate field findings from each vibracore boring to USACE within ten (10) calendar days of borehole completion, which includes preliminary drilling logs and all field documentation. The core photographic mosaics, penetrometer data and preliminary 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 2. 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 for Phases 1 and 2, 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. Target Coordinates. The following are the coordinates for the Phase 1 vibracores (53 total), referenced to NAD1983 NC State Plane Feet. A shape file is available on request.

Table 1. Folly Beach Offshore Phase 1 Vibracore Target Coordinates

Easting Northing Boring_ID Penetration Easting Northing Boring_ID Penetration

2336803 287870 FB-19-V-01 10-Ft 2330656 290704 FB-19-V-28 10-Ft

2337811 288609 FB-19-V-02 10-Ft 2324656 290704 FB-19-V-29 10-Ft

2338656 290257 FB-19-V-03 10-Ft 2326656 288704 FB-19-V-30 10-Ft

2340278 290813 FB-19-V-04 10-Ft 2334656 288704 FB-19-V-31 10-Ft

2342158 292282 FB-19-V-05 10-Ft 2332656 286704 FB-19-V-32 10-Ft

2338940 288166 FB-19-V-06 10-Ft 2328656 286704 FB-19-V-33 10-Ft

2339678 289684 FB-19-V-07 10-Ft 2322656 286704 FB-19-V-34 10-Ft

2341371 288921 FB-19-V-08 10-Ft 2326656 282704 FB-19-V-35 10-Ft

2345157 297024 FB-19-V-09 10-Ft 2340404 281933 FB-19-V-36 10-Ft

2343621 297690 FB-19-V-10 10-Ft 2342283 284054 FB-19-V-37 10-Ft

2345129 299905 FB-19-V-11 10-Ft 2344404 285933 FB-19-V-38 10-Ft

2346526 302163 FB-19-V-12 10-Ft 2342283 280054 FB-19-V-39 10-Ft

2349129 303905 FB-19-V-13 10-Ft 2346283 284054 FB-19-V-40 10-Ft

2344720 302338 FB-19-V-14 10-Ft 2348404 285933 FB-19-V-41 10-Ft

2345129 303905 FB-19-V-15 10-Ft 2336389 269500 FB-19-V-42 10-Ft

2343105 305991 FB-19-V-16 10-Ft 2338389 271500 FB-19-V-43 10-Ft

2334389 271500 FB-19-V-17 10-Ft 2362339 330893 SI-19-V-01 10-Ft

2336389 273500 FB-19-V-18 10-Ft 2364250 332382 SI-19-V-02 10-Ft

2334389 269500 FB-19-V-19 10-Ft 2363901 334721 SI-19-V-03 10-Ft

2340199 305149 FB-19-V-20 10-Ft 2360816 332717 SI-19-V-04 10-Ft

2341209 302196 FB-19-V-21 10-Ft 2362314 333898 SI-19-V-05 10-Ft

2335615 294773 FB-19-V-22 10-Ft 2359423 334492 SI-19-V-06 10-Ft

2334220 294803 FB-19-V-23 10-Ft 2361203 335452 SI-19-V-07 10-Ft

2330656 294704 FB-19-V-24 10-Ft 2361875 336988 SI-19-V-08 10-Ft

2326656 294704 FB-19-V-25 10-Ft 2360057 337387 SI-19-V-09 10-Ft

2322656 292704 FB-19-V-26 10-Ft 2358579 336673 SI-19-V-10 10-Ft

2332656 292704 FB-19-V-27 10-Ft

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

Table 2. 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

Mobilization 5 Business Day To Mobilize to Site and Initiate Work

Drilling Execution (Phases 1 and 2) Cut, Photograph & Log Vibracores *Submit Phase 1 Preliminary Drilling Logs, Photograph & Penetrometer Submittal within 30 calendar days of notice of award

75 Calendar Days

USACE Sample Selection within 4 business days of boring completion

Not Calculated in Contractors Duration

USACE Review & Comment on Preliminary Logs from last round of borings (4 business days)

Not Calculated in Contractors Duration

Draft Lab Test Submittal 24 Calendar Days from last USACE sample selection

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

USACE Review & Comment Draft Final Report

5 Business Days

Final Report Submittal 5 Calendar Days

Contract Closeout 10 Calendar Days

Approximate Total 140 Calendar Days

*Assume a 5-day window for USACE to make Phase 2 boring location determinations upon completion of Phase 1 drilling.

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:

Terry.W.Hester@usace.army.mil (or his designee);

Carl.F.Baynard@usace.army.mil; and

Kelly.jJ.Kaltenbach@usace.army.mil.

The Final Report shall be bound and titled; “Subsurface Investigation and Geotechnical Laboratory Testing Results, Folly Beach Coastal Storm Risk Management Feasibility Study, Offshore Borrow 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. Kaltenbach.

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.

Pre-screen candidates using E-Verify Program. 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 mailto:Carl.F.Baynard@usace.army.mil http://www.uscis.gov/e-verify 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.

Figure 1. Majority of the Folly Beach Phase 1 borings (43 shown) are offshore of Folly Beach. In Phase 2 the remaining borings (87) will be designated by USACE based upon preliminary drilling logs from the Contractor.

Figure 2. Folly Beach Phase 1 boring locations (10 shown) offshore of Sullivan’s Island. No additional borings will be drilled here in Phase 2.