Sources_Sought_1.pdf

TSC tTEM V2 (tTEM2) System Upgrade

Type: Sources Sought

1. NOTICE

This is not a solicitation but rather a Sources Sought Synopsis to determine potential sources for information and planning purposes only.

1.1 The purpose of this Sources Sought is to conduct market research to determine if responsible sources exist, to assist in determining if this effort can be competitive and/or a total Small Business Set-Aside. The proposed North American Industry Classification Systems (NAICS) Code is 334519, Other Measuring and Controlling Device Manufacturing, which has a corresponding Size standard of 100 employees. The Government will use this information to determine the best acquisition strategy for this procurement. The Government is interested in all small businesses to include 8(a), Service-Disabled Veteran-Owned, Hubzone, and Women- Owned small business concerns. The government requests that interested parties respond to this notice if applicable and identify your small business status to the identified NAICS code.

Additionally, please provide any anticipated teaming arrangements and delineate between the work that will be accomplished by the prime and the work accomplished by the teaming partners.

2. DESCRIPTION

The Bureau of Reclamation (Reclamation) has a requirement to procure a tTEM V2 imaging system upgrade to rapidly map/image subsurface electrical conductivity distributions related to subsurface hydrogeologic conditions down to approximately 590ft below ground surface or more that may impact a Reclamation facilities structural integrity. The system will help inform Safety of Dams risk analyses, help inform feasibility and design studies related to modification and new construction projects, and to help inform ongoing modification and new construction projects.

Reclamation currently owns a tTEM V1 system which is now outdated and has increasingly experienced significant electronics failures due to heavy field use. This requirement is for upgrading the existing V1 system with the new updated tTEM V2 data collection system electronics and accessory components needed to convert the existing system hardware. Some of the existing V1 system’s components are compatible with the new V2 system. This upgrade involves trading in the old electronics for the new electronics, allowing Reclamation to convert the V1 system to a new tTEM V2 system at a discounted cost. Reclamation also owns licenses to Seequent’s (Aarhus Geosoftware) Workbench and tTEM module software that is natively compatible with the tTEM system’s data formats.

3. INFORMATION

Mobile tTEM V2 (tTEM2) System Upgrade Package:

BRAND/MODEL

TEMcompany ApS, tTEM V2 (tTEM2) system (tTEM1 upgrade/conversion kit) tTEM2 UPGRADE/CONVERSION KIT DETAILS System Configuration: mobile field vehicle-towed TEM system platform, vehicle-mounted electronics, sled runner-mounted coil platforms. Transmitter and receiver electronics in a new combined unit with integrated transmitter liquid cooling system, integrated internal GPS with SBAS, wireless WiFi hotspot connectivity to cellphone or field tablet/laptop for data collection and data transfer, internal swappable battery for receiver side of electronics unit, external 12v 100 amp-hour lithium battery housed in a rugged suitcase for powering the system and transmitter coil. Stress-relief towing ropes integrated into Rx coil cables. Rx coil cable and tow rope shrouded in abrasion-resistant sheathing. Transmitter coil platform and receiver coil platform components and sedges made of fiberglass, nylon/Teflon, and other composite (non-metallic) materials assembled with 3D printed, carbon-strengthened parts. All fasteners are plastic/non-metallic. Modular transmitter coil platform for use with different transmitter coils.

Upgrade/Conversion Kit Components, (Approx. Dimensions & Weights included where relevant/available)

• QTY (one) tTEM2 combined transmitter and receiver electronics unit (36x36x25cm, 9.6kg)

• QTY (one): RCS20 Receiver coil (~90x90x10cm, ~5kg)

• QTY (two): RRC2054 receiver batteries

• QTY (one): tTEM2 transmitter platform, assembled (~90x90x20cm ~37 kg)

• QTY (one): tTEM2 Tx coil lead-in cable, standard length (~3m)

• QTY (one): Tx coil lead-in cable, extended length (~6m)

• QTY (one): Rx cable, standard length (~15m)

• QTY (one): Rx cable, extended length (~18m)

• QTY (one): System 12v power cable (~0.5m, ~0.5kg)

• QTY (one): Tx coil 221 (2x2m single turn)

• QTY (one): Tx coil 331 (3x3m single turn)

• QTY (one): Tx coil 333 (3x3m three turn)

• QTY (one): 333 Tx coil cable adapter

• QTY (four): 2x2m Tx coil wing with Tx platform mounting hardware (~6cm x 6cm x

1.75m, ~2kg each)

• QTY (four): 3x3m Tx coil wing with Tx platform mounting hardware (~6cm x 6cm x

2.5m, ~2.5kg each)

• QTY (one): tTEM2 data collection software premium functionality subscription, 12 months

Transport:

The system upgrade components are delivered partially disassembled, in sturdy, reusable crates suitable for repeated domestic and international shipping. The old system electronics (transmitter unit and separate receiver unit) returned to vendor.

Watertight Integrity:

Electronics housed in Pelican Case or similar field-rugged cases with IP65+, all connections are waterproof and field-ruggedized.

Environmental Operating Temperature:

-20 to 50°C (-4 to 122°F)

Transmitter Electronics Cooling:

Tx electronics are kept at an operating temperature of 70°C +/-2°C (158°F) @ current 30 A (+/- 1 A) using pumped circulation fluid-cooling system for heat exchange. This system feature is critical to operation of TEM instruments in high ambient temperatures above 90°F.

tTEM2 SYSTEM OPERATION CHARACTERISTICS:

• Dual (low and high) alternating transmitter moments (LM, HM) to achieve both shallow and deep information.

• Transmitter electronics are liquid-cooled with either deionized water and/or aluminum-compatible coolants, heat exchangers, and fans.

• Automatic transmitter current shut-off overheating protection.

• 221 and 331 Tx Coils:

- LM transmits 3 Amp with a turn-off times of 3us and a first usable gate starting at ~4.5us (after beginning of the current off-ramp) for shallow imaging.

- HM transmits 30 Amp with a turn-off times of 4.5us and a first usable gate starting at ~10us (after beginning of the current off-ramp) for deep imaging.

• 333 Tx Coil:

- LM transmits 1 Amp with a turn-off time of 6us and a first usable gate starting at

~10us (after beginning of the current off-ramp) for shallow imaging.

- HM transmits 25 Amp with a turn-off time of 13us and a first usable gate starting at

~25.5us (after beginning of the current off-ramp) for deep imaging.

• Repetition frequencies for the two transmitter moments results in a raw sounding obtained every 0.8 sec corresponding to 3-4 m spacing between soundings at a production speed of 15-25 km/h.

• Both LM and HM transmitter waveforms are alternating/bipolar.

• Duty cycle of the transmitted waveforms can also be reduced to further avoid system overheating issues in extreme hot field temperature environmental conditions.

• Depending on field conditions and line density, the production rate is approximately 1 km2 per day = 100 hectares/day, spanning from ~150 Ha/day in good conditions and ~50 Ha/day if conditions are poor.

• Obtain usable data as close as 30-70 m to a coupling source (e.g., metallic infrastructure).

• Advanced TEM signal optimization with data collection parameter settings:

- Powerline cycle noise suppression with raw stack size adjustment.

- Pulse repetition adjustment to suppress VLF signals.

- Fast Tx waveform repetition rate suppresses Tx-Rx orientation and motion-induced noise.

POWER SUPPLY

• The transmitter is powered by an external battery suitcase, containing a 12V 100 Ah LiFePO4 battery.

• 100 Ah Tx battery shall run a for close to two full field days (~20hrs of constant operation).

• Receiver electronics use a smaller, pocket sized (RRC2054) battery (10.8V, 6.9Ah).

• RRC2054 batteries each lasts about a single field day (~8-10hrs of constant operation).

tTEM2 SYSTEM DATA COLLECTION HARDWARE AND SOFTWARE

• The data collection system (internal Intel NUC or Industrial SBC inside the transmitter/receiver electronics unit) runs a Linux OS and has an SSD or eMMC with 128GB or more, 8 GByte of memory.

• The system has mesh WiFi access point and support for 4G network (SIM card not supplied), making real-time remote field support possible.

• A cellphone or field rugged tablet or laptop is connected to the system’s mesh WiFi network to configure/operate the system during data collection.

• Data collection controller app available for both iOS and Android.

• The system comes with a GIS based navigation system supporting all ordinary GIS formats for background themes or maps, and for showing driving lines and real-time data quality.

• Location data is logged continually by one SBAS (Satellite Based Augmentation System) GPS mounted on the TX-Rx unit (SBAS-enabled submeter GPS supplied with system).

• Standard data collection software/App provides a real-time GIS-based navigation with display of the survey path, current location, line numbers, status parameters, and various alarms from the instrumentation, and has an integrated OpenStreetMap basemap as the default map background. Pre-planned survey lines and GIS maps can also be loaded into the navigation system.

• The optional premium functionality subscription add-on to the data collection software unlocks features in the IOS/Android app and also provides a Windows app for displaying the real-time inversion models in cross sections on a PC.

The premium functionalities are:

• Data is automatically processed and inverted in real-time. The model of the subsurface geological layers is displayed at every 10 m in a cross-section view and the position of the model is shown on the map.

• The DOI is calculated together with the quality of the data fit. These parameters are shown in the cross section.

• The accumulated station stack size for every 10 m is shown in the app.

• The individual transients are gated using non-square gates, also known as tapered gates. Tapered gates increase the signal-to-noise ratio by up to a factor of 2.

tTEM2 SYSTEM IMAGING RESOLUTION AND DEPTH OF INVESTIGATION

• Shallow resolutions: Vertical= 2-3 m, horizontal 10 m (depending on driving speed).

• System capable of imaging up to 130m (~427ft) or 180m (~590ft) below ground surface

(if used with the 221/331 Tx coils, or if used with the 333 Tx coil, respectively).

tTEM2 SYSTEM CALIBRATION

• System calibration factors and results of field-testing at the Aarhus Test site are provided with the system.

• Low pass filters rejecting 50 Hz and 60 Hz powerline harmonic and vibration noise are delivered in Seequent (Aarhus) Workbench import format. Other filters can be designed upon request.

• System is compatible with the TEMcompany current ramp suitcase used for measuring and monitoring the transmitter waveform, ramps, and for maintaining calibration of the tTEM system.

tTEM2 SYSTEM TRANSMITTER AND RECEIVER ELECTRONICS SPECIFICATIONS

Characteristic Low Moment High Moment Tx Current (221/331/333 Tx coils)* ~ 3A/3A/1A ~ 30A/30A/25A Tx Coil number of turns (221/331/333 Tx coils) 1/1/3 Tx Coil Area 4m2/9m2/27m2 Rx Coil number of turns 64 Rx Coil Effective Area** 20m2 Rx Bandwidth** ~1MHz Rx Sample Rate 4MHz Tx Peak moment (221/331/333 Tx coils)* 12Am2/27Am2/27Am2 120Am2/270Am2/675A m2 Repetition frequency* 2110Hz 630Hz Raw Data Stack size* 432 transients 254 transients Duty cycle* 42% 30% Turn-off time (221/331/333 Tx coils)** 3us/3us/6us 4.5us/4.5us/13us Number of gates* 4 23 Gate time interval (221/331 Tx coils)** 4.5us – 52us 10us – 1095us Gate time interval (333 Tx coil)** 10us – 999us 25.5us – 1029us

* Related to operations in 50 Hz powerline areas. Slight modifications are made when operating in 60 Hz environments.

** Nominal and may vary slightly from coil to coil.

tTEM2 DATA PROCESSING SOFTWARE

• System data is compatible for processing and inverse modeling using Seequent (Aarhus) Workbench package, requiring Workbench Essentials and the towed TEM module.

• The data processing and inverse modeling software package is NOT part of this requirement. (already owned by Reclamation)

4. REQUESTED RESPONSES

Provide the following Business Information for your company:

• Company Name:

• Address:

• Point of Contact:

• DUNS/Unique Entity ID Number:

• Phone Number:

• E-mail Address:

• Web Page Address:

• System for Award Management (SAM) Registration (Yes/No):

• Recommended North American Industry Classification System (NAICS Code) if other than

334519:

Based on above NAICS code, state whether your company is small business and provide additional information regarding the type of small business (women-owned, small disadvantaged business, HUBzone, etc.). For more information refer to: http://www.sba.gov/content/table-small-business-size-standards.

5. POTENTIAL OFFEROR CAPABILITIES

Please provide responses to the following items:

a) What is your company’s experience in providing the requirements listed above? Include contract numbers (if applicable), a brief description of the work performed, period of performance, agency/organization supported, and individual points of contact (Contracting Officers or Program Managers).

b) Does your company currently have any teaming agreements in place that will allow for successfully meeting the Government's requirements? In addition, please identify the roles associated with the teaming arrangement.

c) What portion of the work is your company capable of performing?

d) Is your company a Manufacturer of the required tTEM V2 imaging system upgrade? If so, how many of this type and size has your company manufactured and where have they been provided to?

e) Specific but brief material information that is efficient enough to show that the potential product meets the specifics of the requirement.

f) If your company is not a manufacturer of the requirement, provide the Name and Address of all potential manufacturers your company anticipates using for this project.

g) Does your company foresee any challenges with the information provided?

h) Provide other relevant topics, concerns, or information not addressed in this posting.

Please provide the responses to the questions above to Aubrie Watson, Contract Specialist, at aubrielle_watson@ios.doi.gov no later than 4PM MDT on November 5, 2026.

6. POTENTIAL OFFEROR CAPABILITY BRIEFINGS

A focused capabilities briefing may be required at the Government's discretion. The Government will contact interested vendors directly should it be determined that a capabilities briefing is needed.

mailto:aubrielle_watson@ios.doi.gov

7. RESPONSE PROCEDURES

Contractors responding to this posting are advised that their response does not guarantee awards in future solicitations or contracts. This is not a Request for Quote or an Invitation for Bid, nor is it to be construed as a commitment by the Bureau of Reclamation. Submission of any information in response to this Sources Sought is purely voluntary; the Government assumes no financial responsibility for any costs incurred associated with preparation or response to this posting.