A2 - SOW_BEJ_ADAS (Final).pdf

Statement of Work B. Everett Jordan Dam & Reservoir

Purchase and Installation Automated Data Acquisition System (ADAS) for Open Standpipe Piezometer

May 16, 2025

1. GENERAL

This statement of work (SOW) establishes requirements for the Contractor to install an Automated Data Acquisition System (ADAS) at B. Everett Jordan Dam to improve the collection and monitoring of piezometric data. The work shall consist of

1) ADAS component acquisition by the Contractor; 2) shallow embankment and roadway trenching (total 160-linear feet) to run conduit encased instrumentation cable; 3) riser improvement on designated piezometers; 4) assembly of twenty-one

(21) wireless remote input/output (RIO) units, which will be affixed to steel support poles; 5) installation of thirty (30) vibrating wire transducers (VWT) and connecting them to the nearest RIO units; 6) installation of an ADAS wireless base station

(Gateway) and power supply. Contract billing and schedule are provided in Table 1 and Table 2.

1.1 Project Location

B. Everett Jordan Dam is located in Chatham County, NC near Moncure, NC. The dam is 113 feet high with a crest elevation of 265.7 feet NAVD88 and has a downstream slope of 2.5H to 1V. Soil on site is an engineered-Type B soil as described in Table 25-1, of EM 385-1-1 (March 2024). Soils most likely to be encountered in trenching the downstream embankment slope consist of gravel- to cobble-sized (4.75mm to 300mm) particles of intensely weathered rock (gravelly-rocky soils) with some fines. The asphalt parking area consists of typical roadway materials; surface asphalt, compacted aggregate base course (ABC), founded on the granular intensely weathered bedrock material. Within the parking area, the asphalt thickness is 1-1/2 to 2 inches and the Aggregate Base Course (ABC) thickness is 10-inches.

Physical address: 2080 Jordan Dam Road, Moncure, NC 27559.

1.2 Piezometer Location

The locations of the piezometers are shown in Figure 1.

1.3 Site Visit

An organized site visit will be held on 29 May 2025 at 11:00 AM ET at the project location.

1.4 Desired Product State

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The ADAS is desired to efficiently collect and monitor piezometric data remotely from the District office in Wilmington, N.C. The purpose of installing ADAS is to save project staff from the time and expense of regularly reading piezometers, reduce the potential of reading error, and to increase data collection frequency. The system should be able to be operated with a minimal amount of maintenance, and the instrumentation data should be available either virtually through the internet where it can be stored in predesignated folder or easily imported into a database, with minimal effort. Thirty (30) existing open tube piezometers shall be instrumented with VWT.

The cables from these instruments shall be run within buried protective casing to a local remote input/output unit (RIO) that contains a vibrating wire analyzer, power regulator, wireless transmitter antenna, and solar panel. The system will communicate wirelessly to the ADAS base station which consists of a cellular gateway which will be located at a central location to allow for line of sight (LOS) to all RIO units.

System details are provided in the sections below and the figures. A USACE recommended parts listing is provided in Table 3.

1.5 Definitions

As used throughout this description / specification, the following terms will have the meaning set forth below:

Contractor - means a supplier or vendor awarded a contract to provide specific supplies or service to the Government. The term used in this contract refers to the prime.

Contractor Representative - A foreman or superintendent, assigned to represent the interests of the Contractor with regards to all matters involving the contract. The individual will be able to speak and understand English fluently.

Contracting Officer (KO) - means a person with authority to enter into, administer, and or terminate contracts, and make related determinations and findings on behalf of the Government. Note: The only individual who can legally bind the Government.

Contracting Officer’s Representative (COR) - As defined in DFARS 202.101, means an individual designated and authorized in writing by the Contracting Officer to perform specific technical or administrative functions. Department of Defense

Instruction (DoDI) 5000.72, Part II Definitions states the following when defining a

COR: “Defined in subpart 202.101 of Reference (f). Any individual delegated responsibilities pursuant to subpart 1.602-2 of Reference (e), regardless of local terminology, must be certified in accordance with this instruction. For example, local terminology can be COR, contracting officer’s technical representative, technical point of contact, technical representative, alternate COR, administrative COR, assistant COR, line-item manager, task order manager, quality assurance personnel, quality assurance evaluator, or COR management.” In addition, Army Regulation 70-

13, Chapter 2, paragraph 2-2g, states, in part, the following when providing support personnel to assist the COR, “…These other surveillance support personnel may serve as on-site representatives of the COR in performance of actual contract surveillance if they meet all COR requirements and have been appointed by the

Contracting Officer as alternate CORs.”

Quality Control - means all necessary measures taken by the Contractor to assure that the quality of an end product or service shall meet contract requirements.

Quality Assurance - means the various functions, including, inspection, performed by the Government to determine whether a Contractor has fulfilled the contract obligations pertaining to quality and quantity.

1.6 Safety Requirements

All equipment used and work performed shall be in accordance with safety requirements set forth in the U.S. Army Corps of Engineers Manual EM 385-1-1 entitled Safety and Health Requirements Manual (March 2024 edition) which is available by downloading from:

https://www.publications.usace.army.mil/Portals/76/EM%20385-1-

1%20_EFFECTIVE%2015March2024.pdf

All Contractor operations shall comply with this manual, and all other applicable federal and state laws. Corps inspectors have the authority to stop work due to safety violations. The following reference paragraphs from the safety manual are applicable to trenching and shallow excavation operations, but may not be all-inclusive:

a. Provide an Activity Hazard Analysis (AHA) sec. 25.A.01. Depth of trenching shall be a minimum of 18-inches deep not to exceed 24 inches. Soil on site is an engineered-Type B soil as described in Table 25-1, of EM 385-1-1 (March 2024).

The Contractor shall locate and mark utilities prior to trenching. A resource is NC811

(https://nc811.org/ or 1-800-632-4949), however there may be undocumented utilities in the vicinity.

b. Protect the trench excavation from rainwater, flooding and erosion, sec. 25.A.06.

c. Ensure the Stability of Adjacent Structures, sec. 25.A.04.

d. Applicable mobile equipment and motor vehicle precautions are followed, sec

25.A.08.

e. The Contractor is responsible for coordinating and maintaining utility locates for any Government owned utilities and any privately owned utilities within the work area prior to commencing any excavation or subgrade activities, sec. 25.A.10.

f. Sloping and Benching, Cribbing, Support Systems, and Cofferdams are not required.

g. Shield systems may be considered to protect open trenchworks from inadvertent foot traffic, sec 25.D.04.

https://www.publications.usace.army.mil/Portals/76/EM%20385-1-1%20_EFFECTIVE%2015March2024.pdf https://www.publications.usace.army.mil/Portals/76/EM%20385-1-1%20_EFFECTIVE%2015March2024.pdf

h. Wear high visibility apparel when working on the jobsite, near roadways, or near heavy equipment. High visibility apparel shall comply with ANSI/ISEA 107, Class 2 requirements. sec. 5.F.01.

i. Use approved safety containers for gasoline, sec. 9.B.08 through sec. 9.B.19.

j. Equipment shall not be operated without guards and safety devices in place as recommended by the manufacturer.

k. The minimum clothing worn shall be short sleeve shirts and long pants (The wearing of shorts is not approved), and leather or other protective work shoes or boots for this contract. sec 5.A.06.

l. Use safety shoes when using trenching equipment, etc. sec. 5.A.0

m. Use eye/face/hearing protection devices, sec. 5. All eye and face protection equipment shall meet the requirements of ANSI Z87.1 and bear a legible and permanent “Z87” logo to indicate compliance with the standard. sec. 5.B.01.

n. Hearing protection shall meet the requirements of ANSI S3.19. Hearing protection shall be worn by all involved in mechanized trenching operations.

o. Traffic Control Signs. Traffic control shall be accomplished in accordance with

DOT Federal Highway Administrator’s Manual on Uniform Traffic Control Devices for Streets and Highways.

p. The Contractor shall be responsible for providing, erecting, maintaining, and removing of all traffic signs necessary for employee and traffic safety. Signs shall primarily consist of “MEN WORKING” warning signs.

q. The Contractor shall be responsible for providing, erecting, maintaining, and removal of all safety measures necessary for public safety regarding any open trenches.

r. All vehicles and equipment trailers shall have working brake lights, turn signal lights, and emergency flashers. Emergency flashers shall be used whenever vehicles and/or equipment trailers are parked on roadways or road shoulders.

s. No person shall be required or instructed to work in surroundings or under conditions that are unsafe or dangerous to his or her health.

t. The Contractor shall be responsible for maintaining a safety program that complies with all Federal and State safety standards and the requirements specified herein.

1.6.1 Accident Prevention Plan

Within ten (10) calendar days of the contract award, the Contractor shall submit a detailed Accident Prevention Plan (APP) in accordance with Section 1, Para. 01.

A.07 and Appendix A, EM 385-1-1 (March 2024). The APP shall be submitted in

Appendix A format. Wilmington District approval of this plan shall be obtained before starting work. EM 385-1-1 is periodically updated, and the Contractor shall comply with all updates. The APP shall interface with the Contractor’s overall safety and health program. As a result, the Contractor shall include relevant aspects of the safety and health program into the APP to ensure applicability to site-specific conditions. The Government considers the Prime Contractor to be the “controlling authority” for all work site safety and health of the subcontractors.

The Contractor shall maintain an accurate record of and shall report to the

Contracting Officer in the manner and on the forms prescribed by the Contracting

Officer, exposure data and all accidents resulting in death, traumatic injury, occupational disease, and damage to property, materials, supplies, and equipment incident to work performed under this contract. All accidents shall be reported within

24 hours of the occurrence. All accidents resulting in death or injury requiring medical attention shall be reported immediately.

Contractors are responsible for informing their subcontractors of the safety provisions under the terms of the contract and the penalties for noncompliance, coordinating the work to prevent one task from interfering with or creating hazardous working conditions for other tasks, and inspecting subcontractor operations to ensure that accident prevention responsibilities shall be conducted.

1.6.2 Equipment Safety

All equipment or materials which do not comply with EM 385-1-1 (March 2024) shall be immediately removed from Government property.

1.6.3 Normal Working Hours

Normal working hours for the Contractor shall be Monday through Friday (0730-

1630), unless otherwise specified, or as specifically approved in advance by the

Contracting Officer (KO). No work on site other than specified shall be allowed without specific approval. No services shall be required on Federal holidays listed below.

• New Year’s Day January 1st

• M. L. King Memorial Day 3rd Monday in January

• Presidents’ Day 3rd Monday in February

• Memorial Day last Monday in May

• Independence Day July 4th

• Labor Day 1st Monday in September

• Columbus Day 2nd Monday in October

• Veteran’s Day November 11th

• Thanksgiving Day 4th Thursday in November

• Christmas Day December 25th https://safe.menlosecurity.com/doc/docview/viewer/docNC9F4218D27C752b9cf599533839f06a276b9b35ddfb9231b40c930de3f701065e869779281fe https://safe.menlosecurity.com/doc/docview/viewer/docNC9F4218D27C752b9cf599533839f06a276b9b35ddfb9231b40c930de3f701065e869779281fe https://safe.menlosecurity.com/doc/docview/viewer/docNC9F4218D27C7f40b5fe8f4eae7230050e799609a134e481d6843fa9558bd821d62ca72090a75

1.7 Other Contracts

Other Contractors and Corps of Engineers employees may be near the Contractor’s designated area of work. The Contractor shall cooperate fully with all other contractors in the area and shall not impede the work of others in any way.

1.8 Damage Responsibility

The Contractor shall be responsible for any damage to Government or private property, facilities, structures or landscape features occurring because of his or her operation. The Contractor shall be required to satisfactorily rectify notices of damage from the public and to protect the Government from claims resulting from damage caused by his or her activities and make immediate notification to the Government concerning said damage or injury to any person. In instances where contract employees damage Government property and/or equipment, verbal notification shall be made by the next workday. A written report of the incident and extent of such damage shall be submitted to the Government using ENG form 3394, U.S. Army

Corps of Engineers (USACE) MISHAP NOTIFICATION AND INVESTIGATION, within two working days (less weekends and holidays).

The Contractor is responsible for coordinating and maintaining utility locates for any

Government owned utilities and any privately owned utilities within the work area prior to commencing any excavation or subgrade activities. A resource is NC811 utility location services (https://nc811.org/). The Contractor shall notify the

Government if any utilities are accidently intercepted, if water seepage is observed, or if any piezometer riser pipes or appurtenant structures are damaged during trenching.

1.9 Contractor Personnel

The Government may direct the Contractor to replace any employee(s) that the

Government deems or suspects to be incompetent, careless, insubordinate, under the influence of intoxicating drugs, beverages, etc. or whose continued employment is contrary to the public interest. The Contractor shall be responsible for the immediate replacement of any employee under the conditions identified above, in addition to any costs associated with the replacement of any unsuitable employee.

1.10 Commencement of Work

The Contractor or their representative shall coordinate a pre-work meeting with the

Government no less than 72-hours prior to the desired commencement of work date.

The Contractor shall obtain all maps and instructions from the Government necessary to accomplish the work. The Contractor shall become familiar with the nature and location of the work by inspection of the site; noting the local conditions, security, safety, equipment, and facilities required for the work, and all other factors which may affect the work or costs to perform the work. Any failure by the Contractor to review available information concerning these conditions will not relieve the

Contractor from the responsibility for estimating the difficulty or cost of successfully performing the work. It shall be the responsibility of the Contractor to describe the contract requirements to subordinate employees and subcontractors.

1.11 Equipment and Materials

The Contractor shall furnish all supplies, materials, and equipment except water.

Water required for performing duties may be obtained from existing Government water supply systems or from other sources approved by the Government. The

Contractor shall furnish all equipment necessary to load, contain, and transport water for cleaning in areas where water is not available. No equipment shall be left onsite after working hours without approval from the Government on a case-by-case basis.

The Government may deny requests to leave equipment onsite. USACE is not responsible for any theft or damage to equipment left onsite.

1.12 Instrumentation Specialist

The individual assigned as lead instrumentation specialist must be a registered

Professional Engineer (PE) and recognized professional in the field of instrumentation and monitoring of geotechnical and hydraulic structures with over 5 years of work experience relevant to the scope and magnitude of work specified in this contract. An experienced alternate individual, not meeting the PE license requirement, may work under the direction and supervision of the PE to conduct all tasks of the instrumentation specialist, with exception of the selection of alert values, analysis of reported instrument readings, and directed response actions. A detailed, concise narrative describing the instrumentation specialist qualifications and relevant work completed by those experienced alternate individuals on a minimum of 3 projects, within the last 7-years is required for Government review and approval.

Likewise, equivalent backups meeting the aforementioned qualifications must be identified and included with the required submittal of the instrumentation specialist(s). The responsibilities of the instrumentation specialist are selection of the instruments required for purchase for the work, installation, calibration, and performing necessary maintenance of that specialized equipment in the field; and compiling readings and reporting them. Supporting work, which does not require specialized skills, may be performed by the primary contractor, with prior approval of the Government.

2. AUTOMATED DATA ACQUISTION SYSTEM (ADAS)

2.1 General

The ADAS components installed under this task order shall be compatible with systems networking. A USACE preferred parts listing is provided in Table 3.

Photographs from a similar USACE project which utilizes an ADAS system on piezometers is shown in Figures 2 through 7. Thirty (30) VWT are to be installed within all designated open tube piezometers (Figures 1 and 8, Tables 4 and 5). All instrumentation cables shall be run in conduit. Cable length and connection details are provided in Table 4. Each vibrating wire transducer shall be connected to a specified datalogger, which will be stored within a pole-mounted RIO box. The RIO boxes contain the equipment to read the piezometric data and transmit it wirelessly to the base station using a radio system. RIO station locations are provided in Table 5. The base station or Gateway shall be installed at a location that provides the best radio line of sight (LoS) for all RIO boxes. The Gateway shall be installed using the most efficient and economical procedures and techniques to include connecting to a power source.

The Contractor shall provide a working ADAS system and all supplies, parts, tools, and labor to accomplish this. USACE shall be the approval authority for equipment submittals outside of Table 3, and for Contractor recommendations to change the

ADAS layout.

2.2 Vibrating Wire Instruments

2.2.1 Vibrating Wire Transducers

Vibrating wire transducers (VWT) shall be installed into the existing open-tube piezometers, which are located according to Figure 1. The model of the VWT’s shall be Geokon 4500C 350kPa, see Figure 4:

(http://www.geokon.com/content/datasheets/4500_Series_VW_Piezometers.pdf) The

VWT’s will be locally wired to the nearest RIO units in accordance with Table 4.

Embankment trenching shall be required for most piezometers (Figure 1). Roadway piezometers (58 and 27) will require asphalt cutting and trenching from top of the piezometer in order to run the VWT cable and conduit. Repairs shall be made in accordance following attached pavement repair document (Figure 9). All VWTs are to be installed according to manufacturer’s specifications and approved by the contracting officer’s representative prior to installation. The VWTs shall be connected to a datalogger mounted within the RIO unit (Table 4). All external cabling shall be encased in conduit for protection.

2.3 ADAS Telemetry Components

2.3.1 Remote Input/Output (RIO) Units

The RIO unit consists of an environmental enclosure that contains the datalogger mounted to a support pole that is installed into the embankment or crest of the dam at the locations detailed in Table 5. The unit exterior and interior are shown in Figures

2 and 3. The recommended component listing is provided in Table 3. Individual RIO boxes consist of an environmental enclosure containing a DGSI Gteclink Datalogger

(1 or 5 Channel), (https://durhamgeo.com/product-category/geotechnical-instrumentation/data-loggers-readouts-atlas-web-based-monitoring/wireless-data-loggers/gteclink; shown in Figures 5 and 6, respectively), to include internal batteries, all cables, mounting equipment, and accessories to allow for automated data collection from multiple piezometer/VWT’s and wireless transmission. The

Contractor may suggest alternatives to optimize the layout and functionality.

Suggestions shall be submitted to the Contracting Officer (KO) or the Contracting https://durhamgeo.com/product-category/geotechnical-instrumentation/data-loggers-readouts-atlas-web-based-monitoring/wireless-data-loggers/gteclink https://durhamgeo.com/product-category/geotechnical-instrumentation/data-loggers-readouts-atlas-web-based-monitoring/wireless-data-loggers/gteclink https://durhamgeo.com/product-category/geotechnical-instrumentation/data-loggers-readouts-atlas-web-based-monitoring/wireless-data-loggers/gteclink

Officer’s Representative (COR) for USACE consideration and approval.

2.3.2 Datalogging Components

Provide dataloggers that are capable of reading vibrating wire sensors, store data internally for 10,000 readings, and communicate with cellular protocols. Data loggers shall be compatible with data collection devices and other data loggers on site and be capable of storing at least 3-months data in local memory.

Multiple remote input/out boxes shall be installed to minimize excessive vibrating wire cable runs. See Figure 8 for the relative location of the cable runs. Data logging components will consist of a 1-Channel (Figure 5), or a 5-Channel (Figure 6), DGSI

GtecLink datalogger. Communication offsite will be done using cellular data transmission through the Gateway, shown in Figure 7. Required frequencies, appropriate grounding techniques, lightening protection, and any trenching operations required for the successful implementation of system components shall be submitted to the KO or COR for approval prior to the execution of any field work.

2.3.3 Enclosures

Provide enclosures to protect ADAS components from the environment (see Figures

2 and 3). The enclosure and junction boxes for installations of this type shall be a

NEMA 4X enclosure. Properly size enclosures so components can be neat and organized. (Check NEC requirement for capacity). Construct enclosures of fiberglass reinforced polyester and use water resistant gaskets at all entry points to sealed enclosures. For enclosures housing electronics, maintain a low internal humidity level within by using desiccants or heaters.

2.3.4 Conduit

Provide and install PVC conduit and fittings. Surface conduit shall be resistant to ultraviolet radiation and rugged to minimize or eliminate damage. Conduit will be sized based on the number of cables being encased.\

1. Single Channel Datalogger

a. Three Quarter (3/4”) inch diameter conduit

2. Five (5) Channel Datalogger

a. One and one half (1-1/2”) inch diameter conduit

2.3.2.1 Underground Conduit

Bury underground conduit 18-inches below the surface. For installations in roadway bury underground conduit 24-inches below the surface. Install in accordance with

National Electric Code (NEC) regulations.

2.3.5 Power

2.3.2.2 Dataloggers

Size power supply batteries appropriately to power the equipment for 5-years without recharge for dataloggers. Batteries shall be of a lithium iron phosphate chemistry.

Power sources can be solar panels, wind turbines, 110-volt AC hardwire/wall outlets, or combinations of these sources.

2.3.2.3 Gateway

Size power supply batteries appropriately to power the equipment for 10-days without recharge. Power supply batteries shall be comprised of a rechargeable battery or batteries, charge controller, and power source. Power sources can be solar panels, wind turbines, 110-volt AC hardwire/wall outlets, or combinations of these sources.

Batteries shall be of a lithium iron phosphate chemistry.

2.3.2.4 Grounding

Grounding and lightning protection shall be designed by an professionally licensed engineer with experience in electronics and lightning protection. The Contractor shall include the design, with the Professional Engineer's signature and stamp, in a

“Grounding and Lightning Protection Plan” submitted for Government approved. A licensed electrician shall ground all enclosures and equipment that have grounding terminals and install grounding rods in accordance with the engineer's recommendations for assembly, size, spacing and allowable resistance. A licensed electrician shall also install and maintain the transient voltage surge suppressor in accordance with the engineer's grounding and lightning protection plan. Careful handling should be taken to protect sensors that are grouted in a borehole, or other inaccessible sensors.

3. DRAWINGS AND DOCUMENTATION

The Contractor shall submit manuals and product sheets from all manufacturers of the components to be installed in accordance with Section 8, “Submittals” within this

Statement of Work. This is to also include any correspondence (emails, quotes, etc.)

between the Contractor and the manufacturer(s) in designing and laying out the system.

4. INSTALLATION DETAILS, FUNCTIONAL TESTING AND ONGOING SUPPORT

4.1 Trenching

Prior to commencing work, the Contractor shall locate and mark utilities that cross or are otherwise in the vicinity of the proposed trench excavation. Trenching shall generally be conducted in accordance with the “ADAS Cable Run” lines shown in

Figure 8. Staking shall be used to ensure the VWT transducer cables and conduit is properly branched and run prior to installation and final burial. Locator tape will be installed prior to backfilling to ensure that the conduit will can be easily located during future projects. The depth of trenching within earthen embankments, soil slopes and grades shall be no less than 18-inches not to exceed 24-inches. Trench width is to be no more than 12-inches wide. Compact backfill soils using a plate tamper or jumping jack. The backfilled area will then be seeded with grass for long term stabilization. Roadway trenching shall also be conducted, between PZ’s 58 and

27, to a minimum depth of 24-inches not to exceed 30-inches. The Contractor shall sawcut the asphalt pavement prior to trenching to the depth and grade shown in

Figure 9. Backfill materials shall include ABC stone and NCDOT approved asphalt patch. Soils shall be backfilled in 6- to 8-inch loose lifts and compacted. Compaction shall be achieved by mechanized tamper (i.e., jumping jack or vibratory plate compactor). Compact each lift until there is a non-yielding surface (i.e., the surface does not displace downwards while being compacted). Asphalt patching shall be no less than 1-1/2-inches thick to match the thickness of the existing asphalt roadway.

Compacted cold patch asphalt mix is authorized. The total amount of soil embankment trenching is estimated to be 120-linear feet. The total amount of roadway trenching is estimated to be 40-linear feet.

4.2 Spare Parts

The Contractor shall submit in their design proposal a list of spare parts components that they shall procure and deliver to the project (for future maintenance purposes), as part of his final submittals in accordance with Section 8, “Submittals” within this

Statement of Work. Table 3 includes the minimum specified spare parts listing to be included in this contract. The spare parts listing shall include components that are likely to malfunction and can be easily replaced by District personnel. All spare parts shall be new and without defects. Contractor recommended additions to the spare parts list shall be submitted as part of his design proposal.

4.3 Cable Details

All cables used in the system from piezometer to data loggers are to be labeled with an identifying name of each piezometer and any other relevant information needed later during troubleshooting in the field (see Table 4). All cabling used shall comply with the instrumentation manufacturer’s recommendation and NEC guidelines. A complete illustrated diagram showing labeled piezometers and their connections to the data loggers (cable/trenching runs) shall be provided in a diagram after completion and Government acceptance of the field installation. This diagram shall be provided in AutoCAD or ArcGIS shapefiles, and Adobe PDF formats.

4.4 Signal Integrity and Testing Period

The Contractor shall ensure the automation system will properly function on a long-term basis without interference from the production and transmission of power at the adjacent powerhouse or communication frequencies in the area. The Contractor shall ensure that the system is adequately protected from power surges from lighting and other sources or conditions that could cause the system to malfunction.

A 30-day testing period shall be factored into the Contractor’s Period of Performance to verify that all components of the system are performing according to the manufacturer’s recommendations. The ADAS system shall be initially programmed to read all vibrating wire instruments at an interval of once every 60-minutes. These data shall be processed and compiled by the Contractor in 1-week increments, then sent to USACE digitally. The Contractor shall conduct a minimum of 10 manual readings to verify accuracy of the data collected through the automation system. Both a water level meter and vibrating wire readout shall be used to verify the reading.

Data obtained from the automation system shall not vary more than 0.5-foot from corresponding manual readings.

4.5 Ongoing Support

The Contractor shall also be prepared to provide on-site support for 1-year following the ADAS installation. The estimate for this support shall be at two (2) site visits at two (2) days per visit. One site visit shall be planned 30-days after ADAS installation, and one site visit within the contract period as needed by the District. See Table 1, CLIN 0004.

4.6 Electrical Installation

4.6.1 ADAS Installation

The Contractor shall be responsible for complete installation of system components, cable, conduit, sensors, enclosures, and miscellaneous items to make the ADAS fully operational. Installation shall include, but not be limited to, solar power installation, lightning protection, grounding rods or ground mats, power plant compatible shielding, and backup AC power. Qualified technicians shall perform automation component assembly and installation. The work shall include: furnishing labor, tools, equipment, material, and installation activity supervision; receiving, storing, and administering instruments and installation materials; maintaining and keeping an up-to-date and complete set of “as-built” drawings, test and calibration reports, sensor locations, and serial numbers; checking, testing, and calibration of instruments; and furnishing and installing instruments, supports, brackets, conduit, junction boxes, and miscellaneous materials required to complete the system installation.

4.6.2 Cable Installations

4.6.2.1 Definitions

a. Power circuits - conductors used for primary power loads, including receptacle outlets.

b. Signal cable - cable used for transducer connections (exclusive of the buried signal cable), telemetering and remote signaling of radio equipment.

c. Low current control and low-voltage power circuits – conductors used for activating solenoids or for distributing low voltage, AC or DC power to Remote

Monitoring Unit (RMU).

4.6.2.2 Materials

Cable shall be in accordance with ANSI/NFPA Standard, 70- NEC, shall be round in cross sections, shall have American Wire Gauge (AWG) designation, and shall have coverings or insulation suitable for installation in vertical position without injury to the covering or deformation of the insulation when supported in accordance with

ANSI/NFPA Standard, 70- NEC. Cables shall be 100 percent-shielded, low-noise cables. The cables shall be installed in accordance with applicable drawings, requirements of these specifications, and NEC requirements. Signal cable connections for low level circuits shall be made in accordance with recommended practices of the data acquisition system manufacturer. Sufficient length shall be left at the ends of each cable to conveniently make connections to equipment and transducers. No splices shall be made in cable unless authorized by the Government. Approved cable splices shall have junction boxes provided. Cables shall be tagged at both ends with numbering tags. Tag designators shall be referenced in the final documentation.

Color-coded pairs within each tagged cable shall correspond to color-code designations on the final documentation.

4.6.2.3 Trenching

Trenching and backfill procedures shall conform to NEC guidelines for installation of underground utilities. Conduit runs within earthen embankments, slopes, and on soil grades shall be buried a minimum of 18-inches not to exceed 24-inches below grade and shall have 2-inches of sand or fine-grained soil around each conduit. Exceptions are subject to approval by the Government. Materials excavated from any trench shall be piled in an orderly manner alongside the trench. This removed material may be used as backfill if it is free of debris or other material that may cause damage to the conduit or cable. Backfill soil shall not contain ashes, cinders, frozen material, loose debris, vegetation, or rocks greater than 6-inches in any dimension. Flowable fill shall not be used within earthen embankment/soil excavations. Surface water accumulated in the trench shall be pumped out into areas designated by the Contracting Officer prior to placing cable and conduit in the trench and backfilling. Trenches shall be backfilled immediately after the cable and conduit have been placed in the trench.

Backfilling shall be conducted from one trench to the next and shall not be placed over any exposed cable/conduit ends. Backfill soils shall be placed in 6- to 8-inch loose lifts and compacted. Locator tape shall be placed in trenches at a maximum depth of 12-inches. After the backfill is placed, the surface shall be immediately seeded with grasses according to seeding number 2P in Table 6.11d of the NC

Erosion and Sedimentation Control Manual. Acceptable provisions shall be included for preventing erosion along the trench when it is opened up and after it has been backfilled. Backfilling, re-seeding, and re-mulching shall be provided in areas eroded by surface drainage. Cables that must cross paved areas shall be placed in conduit and buried in trenches having a minimum depth of 24-inches not to exceed 30-inches.

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Trenches in paved areas shall be constructed only to the width necessary to install the conduit and cable. The trenches shall be backfilled using -ABC stone placed in 6 to 8-inch loose lifts and compacted. Compaction shall be achieved by mechanized tamper

(i.e., jumping jack or vibratory plate compactor). Compact each lift until there is a non-yielding surface (i.e., the surface does not displace downwards while being compacted). Asphalt patching shall be no less than 1-1/2-inches thick to match the thickness of the existing asphalt roadway. Methods of installing underground cable without disturbing existing pavement shall be used wherever possible. The Contractor shall be aware of all existing buried utilities and shall take necessary caution to prevent damage to these utilities during trenching and backfilling operations. Flexible liquid-tight conduit shall be used for connections between transducers and RMUs where connections are subject to running or dripping water. Joints shall be made with watertight fittings. The annular space between cables and flexible liquid-tight conduit shall be potted with an approved sealing material at the higher elevation so that water does not enter the conduit.

4.6.2.4 Enclosures

The enclosure and junction boxes for installations of this type shall be a NEMA 4X enclosure. There shall be clearances of at least 6 inches below, 4 inches in front of, and 3 inches on the sides and top of the enclosure. Instrumentation, communication, and power connections shall be accessible from the front. See Figure 10.

4.7 References

The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by basic designation only.

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI C2 National Electrical Safety Code

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

NATIONAL FIRE PROTECTION ASOCIATION (NFPA)NFPA70 National

Electrical Code (NEC)

5. MOBILIZATION AND DEMOBILIZATION

Mobilization shall include personnel and all equipment required to complete this task.

Demobilization shall consist of removing the Contractor’s equipment after completion of the work, and cleanup of the work area and final inspection by the KO or his or her designated representative.

6. QUALITY CONTROL

6.1 Quality Control Plan

The Contractor shall submit a Quality Control Plan (QCP) at the start of the project.

The QCP shall follow the format of the Quality Control Plan Guide for Contractors

(see Enclosure 1). The QCP should generally address scope of work, review process, coordination, customer involvement, crucial design features, site visits, quality indicators, research and development plan (if appropriate) and independent technical review.

6.2 Quality Control Review

The Contractor shall carefully coordinate and review all work in accordance with his or her quality control plan prior to submission to USACE. Submittals should require only policy and scoping assurance with minimal technical review by USACE. The

Contractor is responsible for coordination and technical accuracy of all submitted work. The Contractor shall submit certification(s) of an internal review at the 100% completion stage. Payment may be withheld from the Contractor if this documentation is not included with the product submittals. The certification(s) for each completion stage shall be submitted in the format of the CERTIFICATION OF

INDEPENDENT TECHNICAL REVIEW (see Enclosure 2). The certification(s) shall include documentation annotating independent technical reviewers’ comments and how the design team resolved them. The certification(s) are to be signed by a

Principal with the Contractor’s firm. The Contractor shall additionally furnish the signed form, COMPLETION OF INDEPENDENT TECHNICAL REVIEW (see

Enclosure 3), with the final product submittal.

6.3 Coordination

Power requirements needed for installing the system shall be detailed in the work plan for coordination prior to being needed in the field. The primary point of contact

(POC) for USACE is the KO. However, additional POCs are delineated below.

B. Everett Jordan Dam POC:

Dana Matics

Operation Program Manager

B. Everett Jordan Dam

USACE, Wilmington District

919-542-4501 X 2423 dana.l.matics@usace.army.mil

Primary/Instrumentation Technical POCs:

Neill Ray, S.I.

Instrumentation Technician

Geotechnical, Dam Safety Section

USACE, Wilmington District

910-251-4607 neill.ray@usace.army.mil mailto:mailtodana.l.matics@usace.army.mil mailto:neill.ray@usace.army.mil

Kelley Kaltenbach, P.G.

Geologist

Geotechnical, Dam Safety Section

USACE, Wilmington District

910-251-4623 kelley.j.kaltenbach@usace.army.mil

7. SUBMITTALS

The contractor shall submit the following materials for USACE approval:

a. Design Proposal – to include system design with all components, specifications on each component, quantities of each component, configurations to the host PC, and case histories of components successfully used at other projects. Warranty information of system components is also to be included in the proposal.

b. ADAS Instrumentation Work Plan – to include but not limited to all coordination work, work with specialty subcontractors (if any), etc.

c. Initial readings report – to be submitted to the USACE for at least 1-month of readings on the system once all components are installed and system is obtaining data. Readings are to be taken every 15-minutes. The data shall be consolidated into

1-periods and sent to USACE digitally.

d. As-Built Drawings/documentation/product literature.

8. GOVERNMENT FURNISHED ITEMS

The following government furnished items are attached or are available on request:

1. Site Plan - including location of existing instrumentation.

9. COMMENCEMENT, EXECUTION, AND COMPLETION OF WORK

The Contractor shall be required to (a) commence work under this Scope Work within ten (10) calendar days after the date the Contractor receives the notification from the Contracting Officer or his/her designated representative. The Contractor shall complete the entire work ready for use not later than 180 calendar days from the receipt of Notification from the Contracting Officer or his/her designated representative.

10. PAYMENT

The Contractor may submit invoices to the COR for work that has been completed.

The invoice shall be reviewed and verified by the KO and COR prior to payment processing. Refer to Table 1: Project Billing and Contract Line-Item Numbers.

10.1 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

Contracting Officer’s Representative (COR) named in 7.3 Coordination. The

Contractor shall ensure that the following are included on the invoice:

• Contract #

• Invoice #

• Company Name

• Invoiced Line Items must match the Project Billing and Contract Line-Item

Numbers in Table 1, below.

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

• Period of performance invoice addresses

• Date invoice is submitted

Any invoice may be returned to the Contractor for corrections, if needed. If so, the date of invoice shall be changed to reflect the new submission date corrections have been made.

Item No. Description Quantity Unit Unit Cost

Subtotal Cost

0001 Mobilization and Demobilization 1 Job

0002 ADAS Component Acquisition 1 Job

0003 ADAS Installation 1 Job

0004 Site Visits 1 Job

11. SCHEDULE

The period of performance is 180 calendar days. The Contractor shall follow the schedule in Table 2 and note key milestones below for the installation of the

Automated Data Acquisition System.

Item/Milestone Completion by

QCP 14-Days after Contract Award

Accident Prevention Plan Within 30-Days of Contract Award

Final Installation Report 60-Days after Completion of Installation

Sequential Activity Duration (Calendar Days)

USACE

Responsibility

Contractor Responsibility

Table 1. Project Billing and Contract Line-Item Numbers.

Award Contract 1 X

Quality Control Plan 14 X

Accident Prevention Plan (APP)

• APP Draft and Submit 7 X

• USACE Review of Draft APP 7 X

• APP Revisions and Resubmittal 7 X

• USACE Review and Acceptance 1 X

ADAS Acquisition and Installation

• Components Acquisition 60 X

• ADAS Installation/Fieldwork 30 X

Table 2. Contract Schedule.

Figure 1. Existing Piezometer Locations.

B Everett Jordan Lake Dam Automated Data Acquisition System Design

Item Manufacturer Model Length (ft) Quantity

VW

VW Piezometer Geokon 4500C 350 kPa 50 5

VW Piezometer Geokon 4500C 350 kPa 75 6

VW Piezometer Geokon 4500C 350 kPa 100 8

VW Piezometer Geokon 4500C 350 kPa 125 7

VW Piezometer Geokon 4500C 350 kPa 150 4

VW Piezometer Geokon 4500C 350 kpa 175 0

VW Piezometer Geokon 4500C 350 kpa 200 0

VW Piezometer Geokon 4500C 350 kpa 225 0

VW Piezometer Geokon 4500C 350 kpa 275 0

Remote Monitoring Unit (RMU)

Gateway DGSI Gateway - Gteclink 4G 915 MHz 1

Antenna DGSI Antenna - 3dB, 915/923 MHX 1

Enclosure Campbell Scientific ENC16/18 NC-SB-PM 1

Remote Input/Output Box

Datalogger DGSI Gteclink One Channel 13

Datalogger DGSI Gteclink Five Channel 8

Battery SAFT LSH 14 3.6v C 45

Enclosure Campbell Scientific ENC14/16-SC-PM 21

Spares

Datalogger DGSI Gteclink One Channel 1

Datalogger DGSI Gteclink Five Channel 1

Table 1. Recommended ADAS Parts Listing.

Table 2. Piezometer Depth and Transducer Cable Length Details.

Instrument ID Depth (ft) Distance from DL (ft) Cable length (ft)

PF19 116 14 130

PF22 62 20 82

PZ25 111.2 14 125.2

PZ26 108.5 14 122.5

PZ27 81 38 119

PZ28 47 15 62

PE29 84 14 98

PE30 83 14 97

PZ31 52.6 17 69.6

PE33 52 36 88

PZ35 18 15 33

PE34 48 25 73

PF36 112 15 127

PF37 63 14 77

PZ38 109 15 124

PZ39 60 15 75

PZ40 109.9 15 124.9

PZ41 32 15 47

PF42 43 80 123

PZ48 91.6 15 106.6

PE50 55 15 70

PZ58 128 15 143

PZ59 61.8 15 76.8

PF66 53 25 78

PE77 103 15 118

PE89 63 15 78

PF90 39 15 54

PE91 29 15 44

PF92 30 15 45

PE93 21 15 36

Table 3. RIO Station Location and Piezometer Connection Details.

Note:

Location refers to the general location of the RIO box on the dam.

US - Upstream Slope Face

DS – Downstream Slope Face

Number Location Piezos Northing Easting Datalogger

RIO38 DS 38 693088.6985 1980038.412 1

RIO30 DS 30 692969.45 1979877.774 1

RIO29 DS 29 692944.6846 1979824.73 1

RIO33 DS 33,37,50 692848.3909 1979862.087 5

RIO22 DS 22,34,66,42 692877.485 1979929.464 5

RIO92 DS 92,93 692793.2161 1979977.823 5

RIO90 DS 90,91 692737.8022 1979918.231 5

RIO41 DS 41 692784.1958 1979890.606 1

RIO36 DS 36 692976.3637 1979797.184 1

RIO89 DS 89 692994.6209 1979819.673 1

RIO19 DS 19 693017.0959 1979863.014 1

RIO77 US 77 693083.2004 1979809.619 1

RIO40 US 40 693168.3335 1979993.333 1

RIO48 DS 48 693007.2889 1979908.622 1

RIO31 DS 31 693201.111 1980346.667 1

RIO39 DS 39 692957.6069 1980103.116 1

RIO58 CREST 27,58 693276.3762 1980336.309 5

RIO59 DS 35,59 693105.2637 1980379.778 5

RIO25 Crest 25 693030.3712 1979784.348 5

RIO26 Crest 26 693054.0952 1979829.125 5

RIO28 DS 28 692902.938 1979743.474 1

Figure 2. Example of RIO Box Installation of USACE project

Figure 3. Internal View RIO Box.

Figure 4. Geokon 4500C Small Diameter Vibrating Wire Transducer (VWT).

Figure 5. Gteclink Single Channel Datalogger. Figure 6. Gteclink 5 Channel Datalogger.

Figure 7. Gateway Component.

Figure 8. Trenching Layout. Note: All Cable Shall be Run in Conduit.

Figure 9. Standard Pavement Excavation Cross-Section.

Figure 2 Typical RIO Station Setup.

Enclosure 1

Quality Control Plan Guide

1. Master File. Certify that a master file (record File) has been established. Give project name, location, file number, control and access details. The Corps will provide the Master File number and maintain the file; the AE will be responsible for providing pertinent information (QCP, critical correspondence, review documentation) to keep the file up to date.

2. Scope of Work. Define the task. Designate project team. Assign responsibilities. Address budget and schedule. Discuss CRUCIAL design parameters.

3. Specify the review process. Designate the review team, checking of comps, verification of

CRUCIAL design parameters, review by specialists, supervisory review, use of interim reviews, and the Independent Technical Review (ITR).

4. Use of checklists. Identify applicable references and guidance. Discuss design checklists, environmental checklist, others. Show copies.

5. Coordination. Tell who is in the coordination loop. Who needs to know your results? Whose input do you need? How does the Corps fit in? Describe provisions for estimating, specifications, and printing (where applicable).

6. Plan for customer involvement. Show where the Corps’ customer(s) fits into your planning, review, changes, etc…

7. Analyze CRUCIAL design features. Describe what must not be allowed to go wrong and what steps will be taken to be sure it doesn’t.

8. Site visits. Describe how site visits will be used to insure good design. Detail frequency, coordination, use of photos, field data. Identify any special equipment needed for site visits.

9. Quality indicators. Tell what you will use to monitor budget, schedule, technical quality, and responsiveness.

10. Describe your R&D plan. Be sure your design/study incorporates the latest technical developments.

11. Signature blocks for Principal, Project Engineer

Enclosure 2

CERTIFICATION OF INDEPENDENT TECHNICAL REVIEW

Significant concerns and the explanation of the resolution are as follows: (Describe the major technical concerns, possible impact, and resolution)

As noted above, all concerns resulting from independent technical review of the project have been considered.

(Signature) ____________

(Principal w/ Contractor firm or Engineer of Record with Gov Ctr) Date

Enclosure 3

CONTRACTOR STATEMENT OF TECHNICAL REVIEW

CONTRACTOR DESIGN - SAMPLE

(To be used by the Contractor to certify that the design and ITR processes are complete)

COMPLETION OF INDEPENDENT TECHNICAL REVIEW

For B. Everett Jordan Dam

Automated Data Acquisition System Installation

The Contractor has completed the installation and testing of the ADAS at B. Everett Jordan

Dam, in Chatham County, NC. Notice is hereby given that an independent technical review has been conducted that is appropriate to the level of risk and complexity inherent in the project, as defined in the Quality Control Plan.