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WALKER MARINE GEOPHYSICAL CO., LLC

UEI: MM6FEELDGW27CAGE: 3DZT2

WALKER MARINE GEOPHYSICAL CO., LLC is a federal contractor, registered under UEI MM6FEELDGW27 and CAGE code 3DZT2. It has been awarded $1,222,443 in federal contracts. Primary work spans Geophysical Surveying and Mapping Services and Unknown NAICS. Top awarding agencies include Department Of The Interior and Environmental Protection Agency (epa).

Contact Information

Registration and classification details

Address123 Main St, City, ST 12345

Registration

UEI Code

MM6FEELDGW27

CAGE Code

3DZT2

Entity Structure

Other

Established

N/A

Business Classifications

For Profit OrganizationLimited Liability Company

NAICS Codes

541360Geophysical Surveying and Mapping Services(Primary)

Federal Contracting Overview

Award totals, agency breakdown, NAICS distribution, and geographic footprint.

Key Performance Metrics

Awards Count

8

All time

Active

0

Currently performing

Completed

8

Past period of performance

Total Awards

All time

Contracts

Prime · all time

Subcontracts

Sub · all time

Grants

Prime · all time

Subgrants

Sub · all time

Award Analytics & Distribution

Awards by Agency

Department Of The Interior$659.2K53.9%Environmental Protection Agency (epa)$563.3K46.1%

Awards by NAICS

541360 - Geophysical Surveying and Mapping Services$648.8K53.1%

- Unknown NAICS$573.7K46.9%

Awards by Agency Over Time

Awards by Place of Performance

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Open opportunities in WALKER MARINE GEOPHYSICAL CO., LLC's top NAICS codes and agencies

Geospatial Data Processing & AnalysisThis subcontract for Geospatial Data Processing and Analysis supports prime contractors on Network Rail Infrastructure Limited projects by converting raw aerial data into actionable Earthwork Asset condition information. The scope of work involves specialized technical processes, including RGB orthorectification and the filtering and classification of LiDAR point clouds. To execute these tasks, the provider must utilize high-performance computing and industry-standard geospatial software such as Terrasolid and ArcGIS. The contract emphasizes rigorous technical standards, specifically requiring expertise in information security and the validation of positional accuracy. Final deliverables consist of processed geospatial datasets accompanied by comprehensive quality control reports. The project is categorized under NAICS code 541360 and is managed through Network Rail Infrastructure Limited.

Network Rail Infrastructure Limited

POSTED

DEADLINE

Provision of Aerial Survey of the UK Rail Network - LiDAR (Light Detection and Ranging) and Aerial Photography

Solicitation # 2026/S 000-096692

Network Rail Infrastructure Limited is seeking a provider for an aerial survey of the UK rail network under solicitation 2026/S 000-096692. The project focuses on LiDAR and RGB data capture to deliver Earthwork Asset condition information, with a critical performance window for data collection scheduled between November 2027 and March 2028. The estimated total contract value is 12,000,000 GBP excluding VAT, with an overall period of performance running from September 30, 2027, to September 29, 2030. The procurement utilizes a competitive flexible procedure to shortlist four to five suppliers based on a Procurement Specific Questionnaire and conditions of participation. Final award decisions will be weighted 40% on commercial cost via the Aerial Services Core Pricing Schedule and 60% on quality, focusing on capture and processing methodologies, positional accuracy, and quality control. Mandatory requirements for participants include legal and financial capacity, information security, sustainability, and compliance with modern slavery and subcontractor management standards. The process is noted as particularly suitable for small and medium-sized enterprises.

Network Rail Infrastructure Limited

POSTED

DEADLINE

Vehicle Recompete: TESTING AND DRILLING — INDEFINITE DELIVERY / INDEFINITE QUANTITY W9123823R0008This Indefinite Delivery Indefinite Quantity contract, managed by the Department of the Army, provides specialized testing and drilling services. The vehicle consists of four primary awards under solicitation W9123823R0008, with an ordering period that remains active until April 13, 2028. Currently, there are 14 active task orders with a combined total value of approximately 5.64 million dollars. Four companies hold orders under this vehicle, with Geo-Ex Subsurface Exploration leading in total value at over 2.6 million dollars. Other active incumbents include Gulf Shore Construction Services Inc, Taber Drilling, and Gregg Drilling LLC. Key projects under this contract include flood control levee work, geotechnical exploration in Arizona, levee repairs at MCAS Camp Pendleton, and municipal water supply well exploration in California.

Department of the Army

POSTED

DEADLINE

ITT - Archaeological Services in Relation to Marine Protection 2027-2029 - UID 365

Solicitation # PREF 00000633

Historic England is soliciting proposals under solicitation number PREF 00000633 for archaeological, marine survey, and research services to support marine protection and management. The project aims to fulfill the UK's commitments to the European Convention on the Protection of the Archaeological Heritage (revised) 1992 by conserving and enhancing significant marine heritage assets within UK territorial waters adjacent to England, specifically targeting sites most at risk from decay, neglect, or other threats. The estimated total value of the contract is 312,000 GBP excluding VAT, or 374,400 GBP including VAT. The period of performance is scheduled from April 1, 2027, to April 30, 2029, with a possible 12-month optional extension through April 30, 2030. This open procedure procurement will be awarded based on a weighted evaluation of 65 percent for quality and 35 percent for price. Interested parties must submit their electronic proposals in English via the designated portal by November 13, 2026, at 9:30 am, with an enquiry deadline of November 6, 2026. The primary point of contact for this procurement is Sheena Charrett.

Historic England

POSTED

DEADLINE

Decadal scale net sediment budget and geomorphic change analysis of SSSI dune systems in England

Solicitation # ocds-h6vhtk-07813f

Natural England is soliciting a desk-based project to conduct a decadal scale net sediment budget and geomorphic change analysis of 12 specific SSSI dune systems in England. The primary objective is to quantify changes in dune field sediment volume and spatio-temporal topographic variability using LiDAR data and DEM of Difference calculations. This analysis will serve as a proxy for sediment availability to support SSSI condition monitoring and assess resilience against climate change and coastal squeeze. The contract is open to UK suppliers and will be awarded based on the most advantageous tender, evaluating both technical methodology and commercial cost. The project has a maximum budget of 41,667 GBP excluding VAT and is expected to run from November 2, 2026, through March 30, 2027. Key deliverables include phased analysis outputs due in February and March 2027, with a draft report submitted by March 8 and final reporting completed by March 30. The successful contractor must maintain 5 million GBP in insurance and adhere to Natural England Standard Goods and Services Terms and Conditions, including specific intellectual property rights under Option B. While the project is entirely desk-based, the contract documentation references standard staff vetting and health and safety compliance.

Natural England

POSTED

DEADLINE

Paleontological Monitoring ConsultantThis subcontract opportunity is for a Paleontological Monitoring Consultant to support prime contractors on excavation projects within the City of San Diego. The selected consultant will be responsible for conducting records searches, providing full-time field monitoring during grading operations, and managing the salvage of any discovered fossil remains. To qualify, the firm must provide a Principal Investigator who holds a degree in paleontology and possesses professional experience specifically within Southern California. The scope of work requires the delivery of several key documents, including the CSVR, PME, and a Final Paleontological Monitoring Report. This project falls under NAICS code 541360 and is centered in San Diego, California. Interested parties must submit their responses by the deadline of October 29, 2026.

City of San Diego

POSTED

DEADLINE

Geotechnical Engineering ServicesThis subcontract for Geotechnical Engineering Services involves performing subsurface investigations and geotechnical engineering for prime contractors working on City of Oceanside water utility projects. The scope of work includes conducting soil borings and utilizing drilling rigs and sampling equipment to identify geologic hazards and determine the necessity of trenchless construction methods. The final deliverable for these services is a comprehensive geotechnical report. Qualified providers must hold a Professional Geologist or Professional Engineer license and maintain strict compliance with CAL-OSHA safety standards. The project is located in Oceanside, California, and falls under NAICS code 541360. Interested parties must submit their responses by the deadline of October 26, 2026.

CITY of Oceanside

POSTED

DEADLINE

Archaeological Subsurface Testing and MonitoringThis subcontract involves providing archaeological subsurface testing and monitoring services for the City of Fresno Capital Projects Department in support of multipurpose trail projects. The selected contractor will perform Extended Phase 1 testing, which includes trenching, shoveling, and sampling to identify cultural resources, while also monitoring ground-disturbing activities during the construction phase. All personnel assigned to the project must meet the professional standards established by the United States Secretary of the Interior. The contractor is responsible for delivering detailed subsurface testing results and contributing necessary data to the Final Report. This opportunity falls under NAICS code 541360 and requires responses by October 22, 2026.

Capital Projects Department of City of Fresno

POSTED

DEADLINE

Geophysical Field Data CollectionThis subcontract for Geophysical Field Data Collection involves performing non-invasive geophysical field investigations to support water infrastructure projects for the Town of Apple Valley. The selected contractor will utilize calibrated sensors to execute survey transects and grid spacing through methods such as Electrical Resistivity Tomography, Ground Penetrating Radar, or seismic refraction. All work must be conducted with zero subsurface disturbance and include real-time quality checks adhering to an EPA-approved Quality Assurance Project Plan. The scope of deliverables includes the provision of raw and processed geophysical datasets, detailed field logs, and supporting photographs. This opportunity is categorized under NAICS code 541360 and is managed through the state of Utah. Interested parties must submit their responses by the deadline of November 10, 2026.

POSTED

DEADLINE

Town of Apple Valley- Geophysical Survey and Subsurface Mapping

Solicitation # RFP-2026-03

The Town of Apple Valley, Utah, is soliciting proposals under RFP-2026-03 for a noninvasive or minimally invasive geophysical investigation and subsurface mapping program. Funded by an EPA grant, the project aims to support the selection of a future municipal groundwater production-well site in the northeastern portion of Apple Valley. The scope of work includes project management, a desktop review of existing hydrogeologic data, survey design, and field investigations to interpret subsurface conditions and rank target areas for drilling. All field data must be collected according to an EPA-approved Quality Assurance Project Plan, and the contractor must adhere to Build America Buy America requirements and various federal nondiscrimination and safety standards. Proposals must be submitted electronically to Michelle Kinney at mkinney@applevalleyut.gov by November 9, 2026, at 5:00 PM Mountain Time, with written questions due by October 26, 2026. Submissions must consist of two separate searchable PDF files: a technical proposal limited to 25 pages and a separate cost proposal. Evaluation is based on a weighted system where technical approach, team qualifications, project understanding, cost, work plan schedule, and past performance are considered, with technical factors carrying substantially more weight than price. Required documentation includes signed forms A through F, evidence of insurance, and SAM.gov registration. Award will be granted to the responsible offeror whose proposal is most advantageous to the Town.

POSTED

DEADLINE

RSO Provision of satellite imagery and related services

Solicitation # RSO-RFP-2026-6-5408

The Government of Yukon is seeking a single qualified supplier to establish a Standing Offer Arrangement (SOA) for the provision of satellite imagery, elevation products, imagery post-processing, licensing, subscriptions, monitoring, and hosted imagery services. This arrangement, which will support various government programs across multiple Yukon First Nation Traditional Territories, has an estimated value of 3,000,000 Canadian dollars over a term of three years less a day. Services will be requested on an as-required basis through a Call-Up process, with specific delivery milestones and acceptance criteria defined in each individual request. Deliverables include mono and stereo imagery at various resolutions and the provision of at least one subscription or hosted imagery platform. The award process utilizes a two-envelope system where technical submissions are evaluated first; respondents must score at least 6,000 out of 10,000 points to proceed to the price and Yukon First Nation (YFN) evaluation. Final ranking is based on a combination of technical merit and pricing for imagery, post-processing, and annual services, with Bid Value Reductions available for registered YFN businesses. The successful contractor must maintain commercial general liability insurance of at least 2,000,000 dollars per occurrence and comply with Yukon laws and privacy legislation. All payments are subject to the Financial Administration Act (Yukon) and are processed within 30 calendar days of receiving an undisputed invoice.

Government of Yukon

POSTED

DEADLINE

Ground Penetrating Radar Services (GPRS)

Solicitation # 2627-66MR

Charlotte County Public Schools is issuing a sources-sought Request for Information under solicitation number 2627-66MR to gather technical data for future Ground Penetrating Radar Services (GPRS). The primary objective is to structure a formal solicitation for K-12 campus utility mapping and structural scanning, including concrete scanning. The district is seeking information regarding the use of non-destructive testing equipment such as high-frequency and low-frequency GPR, electromagnetic pipe locators, and ground magnetometers. Key technical inquiries focus on alignment with ASCE 38-22 standards and the provision of Quality Levels QL-A through QL-D, with deliverables potentially including physical markings, digital PDFs, and AutoCAD or GIS maps. Because this is strictly an information-gathering phase, respondents are explicitly prohibited from submitting pricing or rates. The district is evaluating vendor capabilities regarding personnel certifications such as NASSCO, OSHA 10/30, and ASNT Level II, as well as the ability to comply with the Jessica Lunsford Act for background checks on active school grounds. Interested parties must submit their responses, a completed Bid Submission Form, and a signed copy of Addendum No. 1 via the Beacon e-bid platform by October 23, 2026, at 2:00 PM EST. Primary contact for this effort is Michael Robishaw in the Purchasing Department.

Charlotte County Public Schools

POSTED

DEADLINE

Historic Resource Field SurveyorThe Historic Resource Field Surveyor subcontract involves performing physical reconnaissance and detailed documentation of historic buildings, structures, sites, objects, and landscape features for prime contractors working on City of Tybee Island projects. The selected provider will conduct windshield and comprehensive field surveys for up to 500 resources, utilizing high-resolution photography and GPS tools to ensure accuracy. All work must strictly adhere to the Secretary of the Interior’s Standards and Georgia HPD standards. Key deliverables for this engagement include resource counts, preliminary maps, and comprehensive field data. This opportunity is categorized under NAICS code 541360 and is associated with the City of Tybee Island in Georgia. Interested parties must submit their responses by the deadline of October 19, 2026.

City of Tybee Island

POSTED

DEADLINE

Leak Detection Services

Solicitation # IFB 2200 BYS1060

The City of Austin is soliciting bids for leak detection services to cover an estimated 500 linear miles of its water distribution system annually. The selected contractor will provide all necessary labor, materials, equipment, and transportation to perform acoustic leak detection surveys during normal business hours. Key deliverables include pinpointing leaks marked with white paint and providing detailed reports that include survey maps, total leaks identified, accuracy percentages, and the number of appurtenances inspected. The contract has an initial term of 24 months, with the possibility of three additional 12-month extensions and a holdover period of up to 180 days. Award decisions will be based on best value, primarily determined by price, with specific discounts applied for certified local and small businesses. To be eligible, offerors must demonstrate at least three years of experience with similar municipal water systems within the last five years and provide five recent leak detection reports. Mandatory requirements include compliance with the City of Austin Living Wage Program, which mandates a minimum wage of $22.15 per hour, as well as certifications regarding the Wage Theft Ordinance and non-discrimination policies. Contractors must also designate a Single Point of Contact available at the work site and ensure a Survey Leader with at least three years of acoustic detection experience. All services must adhere to OSHA safety requirements and standards set by the EPA, TCEQ, and AWWA.

POSTED

DEADLINE

IFB # 10222002 Canine Forensics Services

Solicitation # 10222002

The California Department of Water Resources has issued Invitation for Bid 10222002 for canine forensic services to identify historic and prehistoric human remains. The contract, which has an anticipated five-year term and an award value of 131,000 dollars, involves using specially trained detection dogs to locate unmarked graves or bone material to guide archaeological investigations. Initial work is focused on mitigation sites Pond 6, Pond 7, and Pond 8 in San Joaquin County, with potential expansion across Alameda, Contra Costa, Sacramento, San Joaquin, Solano, and Yolo counties. The contractor is responsible for developing detailed field survey plans, executing detection surveys with GPS documentation, and providing comprehensive confidential reports. To qualify, the contractor must be an experienced firm capable of surveying projects exceeding 50 acres and must employ specialists and canines certified in scent-specific historic human remains detection. Canines must be trained in various terrains and current on all vaccinations, including rabies. The contractor must also demonstrate experience working with Tribal entities under nondisclosure agreements. Required insurance includes Commercial General Liability of 1 million dollars per occurrence, Automobile Liability of 1 million dollars, and statutory Workers Compensation. Administrative requirements include submitting itemized monthly invoices in arrears, with undisputed payments made within 45 days. Ten percent of progress payments are withheld per Public Contract Code Section 10348 until satisfactory completion. Bidders must comply with various certifications, including the Darfur Contracting Act, Generative AI disclosures, and California Civil Rights Laws. The state also maintains a 3.0 percent annual participation goal for Disabled Veteran Business Enterprises. All personnel accessing sensitive information must sign a Non-Disclosure Certificate.

California Department of Water Resources

POSTED

DEADLINE

Bedrock geologic mapping of the 1:24,000-scale Grantham (Southern 47%) quadrangle.

Solicitation # rfp-des-2026-28

The New Hampshire Department of Environmental Services is seeking a contractor for the bedrock geologic mapping of the 1:24,000-scale Grantham (Southern 47%) quadrangle. This solicitation, identified by number 92d21766-3316-4f40-8061-7b930fe63888, was posted on September 18, 2026. Interested parties must submit their responses by the deadline of October 19, 2026. The primary point of contact for this project is Shane Csiki, who can be reached via email or phone for further inquiries.

Department Of Environmental Services

POSTED

DEADLINE

Bedrock geologic mapping of the 1:24,000-scale Bethlehem quadrangle.

Solicitation # rfp-des-2026-29

The New Hampshire Department of Environmental Services and the New Hampshire Geological Survey are soliciting proposals for a two-year contract to perform 1:24,000-scale bedrock geologic mapping of the Bethlehem Quadrangle in the White Mountains of New Hampshire. The project involves collecting field data on mineralogy, lithology, and structural orientations, as well as conducting laboratory analyses including petrographic thin sections, crystallization ages, and detrital zircon analyses. Key deliverables include a seamless bedrock geologic map in PDF format, GIS files adhering to the USGS Geologic Map Schema, and supporting raw digital imagery and laboratory reports. All work must follow USGS cartographic patterns and Federal Geographic Data Committee symbolization standards. The contract has a maximum value of $57,133 and a performance period extending to July 15, 2029, with the award contingent upon federal USGS STATEMAP funding. Proposals are due by October 19, 2026, and will be evaluated based on the quality of the scope of work, content knowledge of geologic mapping, and technical skills in digital map construction. Selected vendors must maintain commercial general liability insurance of at least $1,000,000 per occurrence and ensure all deliverables comply with ADA accessibility standards, including WCAG 2.1 Level AA conformance.

Department Of Environmental Services

POSTED

DEADLINE

Bedrock geologic mapping of the 1:24,000-scale Kingston quadrangle.

Solicitation # 0db909d6-c34d-486b-afc5-ece0c46b9fa9

The New Hampshire Department of Environmental Services and the New Hampshire Geological Survey are soliciting proposals for bedrock geologic mapping of the 1:24,000-scale Kingston Quadrangle in southeastern New Hampshire. The project requires the collection of field data on mineralogy, lithology, and ductile and brittle structures to create a seamless geologic map. Key deliverables include a PDF electronic map, GIS files in USGS Geologic Map Schema format, and supporting raw digital images and laboratory reports. The scope allows for limited laboratory analyses, including up to 15 thin sections and 15 whole-rock geochemistry samples. All work must adhere to USGS cartographic standards, the 2006 FGDC Digital Cartographic Standard for Geologic Map Symbolization, and specific accessibility requirements including WCAG 2.1 Level AA conformance. The contract has a maximum value of 58,300 dollars and is contingent upon the appropriation of federal USGS STATEMAP funding. The expected performance period is for a two-year contract extending up to July 15, 2029. Award selection is based on the highest overall score combining technical and price proposals, rather than a low-bid process, with a minimum technical threshold of 80 points required for consideration. Proposals are due by October 19, 2026, and must include a letter of interest, professional credentials, and evidence of capability. Awarded contractors must maintain commercial general liability insurance of at least 1,000,000 dollars per occurrence and 2,000,000 dollars aggregate.

Department Of Environmental Services

POSTED

DEADLINE