EA Engineering, Science, And Technology, Inc., PBC
EA Engineering, Science, and Technology, Inc., PBC is an employee-owned public benefit corporation headquartered in Hunt Valley, Maryland, that provides comprehensive environmental consulting, engineering, and scientific services to federal agencies. The company specializes in environmental remediation, site assessment, contaminated site characterization, compliance support, and long-term monitoring across multiple federal programs. As a certified small business prime contractor, EA Engineering maintains a substantial portfolio of federal contracts and grants, positioning itself as a critical provider of environmental restoration services to civilian and military agencies nationwide. The company's expertise spans Superfund site investigations, per- and polyfluoroalkyl substances (PFAS) assessments, Defense Environmental Restoration Program activities, and ecosystem restoration initiatives.
EA Engineering has executed an extensive portfolio of federal contract awards totaling hundreds of millions of dollars across multiple agencies and contract vehicles. The company has served as prime contractor on delivery orders under the Environmental Protection Agency's Remedial Acquisition Framework programs, including Design and Engineering Services (DES), Environmental Services and Operations (ESO), and Remediation Environmental Services (RES) vehicles, with task orders valued from several hundred thousand to tens of millions of dollars for Superfund site investigations, remedial design, feasibility studies, and long-term monitoring at contaminated sites nationwide. Under the Naval Facilities Engineering Command (NAVFAC), EA Engineering has received delivery orders for environmental remedial action services, long-term monitoring and maintenance operations, fuel farm management, land use control inspections, and site-specific remediation at military installations across the Pacific and Atlantic regions, including work in Hawaii, Alaska, Guam, and Washington state. The Army Corps of Engineers has awarded EA Engineering multiple delivery orders for sediment characterization, environmental site assessments, PFAS remedial investigations at Army National Guard facilities, and natural resource surveys under the Multiple Award Environmental Services (MAES) 2017 contract vehicle. The Department of Defense's Other Environmental Programs and Defense Environmental Restoration Program have funded EA Engineering's work on munitions response, explosive safety submissions, interim remedial actions, and environmental compliance at military installations such as Fairchild Air Force Base, Joint Base Cape Cod, and Kirtland Air Force Base. Additionally, the National Park Service has awarded EA Engineering blanket purchase agreement task orders for environmental site assessments, contaminated site cleanup, groundwater monitoring, and Engineering Evaluation/Cost Analysis work at national parks and historic sites. The company has also performed work as a subcontractor on projects led by prime contractors such as HDR Environmental, Ch2M Hill, Mantech SRS Technologies, Stantec Consulting Services, and Marstel-Day, providing specialized services including testing laboratory services, hydrogeological assessments, environmental consulting, and dredged material evaluation support. Set-aside designations have included both total small business and partial small business set-asides on various delivery orders and master contract vehicles.
EA Engineering received a $3,810,000 cooperative agreement grant from the Department of Defense's Office of the Secretary of Defense in August 2023 to support the installation planning, project design, and implementation of nature-based solutions to increase the resilience of Department of Defense built or natural infrastructure and address climate-driven risks to natural and cultural resources. The scope of work under this grant includes conducting feasibility assessments of erosion control projects at key areas for mission sustainment and sensitive resources, seeking opportunities to improve the buffering capacity of hydrological systems through creek stabilization and erosion control initiatives, and identifying nature-based solution opportunities for enhanced military readiness and ecological protection. This grant award reflects EA Engineering's expanding role in supporting federal environmental resilience initiatives beyond traditional remediation work, leveraging the company's expertise in environmental engineering and site-specific solutions to address emerging climate and infrastructure challenges at military installations.
EA Engineering maintains several substantial federal contract indefinite delivery vehicles that establish master agreements for ongoing task order competitions across multiple federal agencies. The company holds a $960 million multiple-award Indefinite Delivery Indefinite Quantity (IDIQ) contract with the U.S. Environmental Protection Agency Region 5 for Great Lakes National Program Office Remediation and Restoration Services II (GLNPO-RRS II), which runs through January 14, 2029, supporting Superfund investigations, remedial actions, long-term monitoring, and PFAS assessments across the Great Lakes region. Under Naval Facilities Engineering Command, EA Engineering maintains a $240 million environmental remedial action services IDIQ contract with a period of performance through April 7, 2029, covering remediation of contaminants regulated under RCLA, CERCLA, TSCA, and SWDA, with predominant performance in the eastern United States, Caribbean, and Europe. The company also holds a $45 million total small business set-aside IDIQ with NAVFAC for long-term monitoring, maintenance, and operation services through January 31, 2031, and a $30 million total small business set-aside IDIQ for environmental remediation services at Navy and Marine Corps installations in Virginia, North Carolina, South Carolina, and West Virginia through September 28, 2028. With the U.S. Army Corps of Engineers, EA Engineering maintains a $960 million Environmental and Munitions Response-Restricted Services Support (EMR2) IDIQ through April 30, 2035, and a $464 million environmental remediation services IDIQ through May 21, 2029, both supporting environmental assessment, cleanup, and compliance projects at Department of Defense and civilian agency installations. The company holds a $500 million Multiple Award Environmental Services (MAES) MATOC with ENDIST Baltimore for the North Atlantic Division through August 27, 2030, and a $245 million Unusable RCRA Property Aquifer Characterization (UR PRAC) contract with USACE Kansas City District through November 28, 2028. Additionally, EA Engineering was awarded positions on the General Services Administration's OASIS+ Unrestricted and OASIS+ Total Small Business Set-Aside multiple-award contracts on December 17-19, 2024, each with ceiling values of $999,999,999,999 and performance periods through December 2029, enabling the company to compete for environmental services task orders across federal agencies nationwide. EA Engineering also holds an $100 million partial small business set-aside contract with the Air Force Civil Engineer Center for architect-engineering environmental services worldwide through March 5, 2035, supporting environmental remediation, PFAS assessments, and site-specific technical services across Department of Defense installations globally.
LEEMJD9WKDC9 562910
Not listed 225 Schilling Cir #400, Hunt Valley, MD 21031, USA
3/13/02 9/24/26 Hltli Joint Venture L.L.C.
Hltli Joint Venture L.L.C. is a Native American-owned and minority-owned SBA Certified 8(a) joint venture limited liability company registered in Maxton, North Carolina, and specializing in environmental remediation and assessment services for the U.S. Department of Defense. The company is an established provider of comprehensive environmental restoration and defense-related environmental support services, positioning itself as a qualified contractor for complex contamination assessment and remediation projects at military installations and formerly used defense sites. As of January 2026, Hltli Joint Venture L.L.C. maintains active SAM.gov registration with an expiration date of January 27, 2026, and holds a current SBA 8(a) certification valid through June 14, 2026.
Hltli Joint Venture L.L.C. has received substantial federal contract awards focused on environmental remediation services across multiple defense installations and formerly used defense sites. The company has been awarded delivery orders by the U.S. Army Corps of Engineers through multiple district offices, including the Savannah District and Sacramento District. Notable delivery orders include a $234,267 delivery order awarded August 28, 2025, for Environmental Restoration Services at Donaldson Air Force Base in South Carolina under the Installation Restoration Program, and a $413,137.46 delivery order awarded the same date for environmental remediation services at the Charlotte Army Missile Plant in North Carolina. The company also received a $1,397,077.46 delivery order from the Sacramento District awarded August 16, 2024, for the Fiscal Year 2024 Operational Range Assessment Program. Additionally, Hltli Joint Venture L.L.C. was awarded a substantial $13,113,884.98 delivery order by the Defense Logistics Agency through ENDIST Los Angeles on June 13, 2024, for fence-to-fence environmental support services at Luke Air Force Base, Barry M. Goldwater Range, and Davis-Monthan Air Force Base in Arizona. These awards demonstrate the company's capability to execute firm fixed-price environmental projects ranging from assessment and remedial investigation services to feasibility studies and long-term monitoring activities. The majority of these delivery orders carry competitive 8(a) or no set-aside designations, reflecting the company's established reputation and competitive standing among federal contractors.
Hltli Joint Venture L.L.C. currently holds two significant indefinite delivery contracts with the U.S. Army Corps of Engineers. The first IDC, awarded by the Savannah District on July 1, 2024, carries a ceiling value of $49,000,000 and extends through June 30, 2029, with a competitive 8(a) set-aside designation. This multiple-award contract provides environmental remediation services in support of the agency's Environmental Restoration and Munitions and Explosives of Concern programs. The second IDC, awarded by the Sacramento District on September 15, 2023, with a ceiling value of $49,900,000 and an expiration date of September 14, 2028, operates under a total small business set-aside and covers operational range assessment and military munitions response program support services. Under this contract, Hltli Joint Venture L.L.C. may receive delivery orders for field investigations, risk assessments, remedial actions, construction, and program support activities. Both IDCs have generated multiple task orders and delivery orders, with the Sacramento District issuing several orders including the FY24 ORAP delivery order and a $5,000 minimum guarantee order awarded September 18, 2023. These two IDCs, combined with their total ceiling value exceeding $98 million through 2029, position Hltli Joint Venture L.L.C. as a primary environmental remediation services provider for Army Corps of Engineers operations across multiple geographic districts.
T1J7E55H6LL6 562910
Not listed McArthur Rd, Maxton, NC, USA
3/21/23 1/23/27 Aerostar SES LLC
Aerostar SES LLC Company Headquarters Division, headquartered in Knoxville, Tennessee, is a subsidiary of Bristol Bay Native Corporation, an Alaska Native Corporation. The company operates as a minority-owned, small disadvantaged business providing comprehensive environmental assessment, remediation, and infrastructure services to the federal government, primarily supporting the Department of Defense and U.S. Army Corps of Engineers. Aerostar SES LLC specializes in environmental compliance, site assessment, remedial investigation and design, CERCLA response actions, PFAS remediation, and construction services across military installations nationwide.
The company's federal contract award history demonstrates extensive expertise in environmental remediation and infrastructure support across multiple military installations. Aerostar SES LLC has received numerous delivery orders totaling tens of millions of dollars from the Air Force Civil Engineer Center for CERCLA remedial investigations and response actions, including major projects at former Mather Air Force Base in Sacramento, California ($13.4 million), K.I. Sawyer Air Force Base in Michigan ($12.6 million), and Wurtsmith Air Force Base in Michigan ($9.4 million) for PFAS investigation and remediation. The company has also performed environmental compliance technical support, Phase II site assessments, groundwater gauging and sampling, stormwater pipe surveys, and long-term monitoring services at installations including Fort Stewart, Georgia; Shaw Air Force Base, South Carolina; Fort Buchanan, Puerto Rico; and Eglin and Tyndall Air Force Bases in Florida. Awards have been issued by the Air Force Civil Engineer Center, U.S. Army Corps of Engineers districts (Sacramento, Savannah, Jacksonville, and Omaha), and the Department of Energy. Notably, Aerostar SES LLC has operated under multiple parent indefinite delivery vehicles, including the SAD Regional Environmental Contracts 2018-2022 and AFICA A-E 2013 Design & Construction Services contracts. All recent delivery orders have been awarded without set-aside designations, indicating competition open to all qualified contractors.
Aerostar SES LLC currently holds two prime indefinite delivery contracts with substantial ceiling values and multi-year performance periods. The primary vehicle is a $100 million multiple-award Indefinite Delivery Contract awarded by the Air Force Civil Engineer Center in March 2025 for architect-engineering environmental services, partially set aside for small businesses, extending through March 2035. This contract covers environmental services worldwide to support environmental programs, including field investigations, risk assessments, remedial actions, and construction activities. Additionally, the company holds a $49.9 million multiple-award Indefinite Delivery Contract with the U.S. Army Corps of Engineers Sacramento District, awarded in September 2023 and extending through September 2028, dedicated to the Operational Range Assessment Program and Military Munitions Response Program with a total small business set-aside designation. This contract authorizes task orders for munitions support services, field investigations, risk assessments, remedial actions, construction activities, and minimum guarantee services to be performed across California. Both indefinite delivery vehicles have generated substantial task order activity, with the Air Force contract alone supporting multiple six-figure to nine-figure delivery orders for environmental remediation and assessment work.
YAPJJVUMWT74 236220
Not listed 10101 Global Wy, Knoxville, TN 37932, USA
9/27/12 2/19/27 Errg-Stell JV
Errg-Stell JV is a joint venture partnership registered in SAM.gov since May 2023 and structured as a small disadvantaged business, women-owned small business, and economically disadvantaged women small-owned business. The entity is based in Martinez, California, and holds a current federal contracting registration valid through March 2026. Errg-Stell JV provides operational support, military munitions response, and environmental remediation services to the Department of Defense and Army Corps of Engineers, positioning itself as a specialized contractor for defense-related operational requirements and environmental compliance activities.
Errg-Stell JV has demonstrated contract performance through two delivery orders issued under the FY25 DAF ORAP Multisite contract and the ORAP/MMRP Minimum Guarantee program, both funded by ENDIST Sacramento. The more substantial award is a $1.83 million firm fixed-price delivery order issued on September 22, 2025, with a completion date of September 21, 2028, representing work to be performed across multiple locations with primary performance in Sacramento, California. This contract was awarded without set-aside designation and involves delivering defense-related goods or services critical to the Department of the Air Force's mission readiness under the Operational Requirements and Availability Program. The second delivery order, valued at $5,000, was awarded on September 18, 2023, for minimum guarantee work under the ORAP/MMRP program with a completion date of September 17, 2024. Both delivery orders were issued by ENDIST Sacramento without set-aside designations, indicating the entity competes on an unrestricted basis despite its small disadvantaged business certifications.
Errg-Stell JV holds a multiple award indefinite delivery contract from the Department of the Army Corps of Engineers Engineering District Sacramento with a total ceiling value of $49.9 million and a performance period extending through September 14, 2028. This contract, awarded on September 15, 2023, was designated as a Total Small Business set-aside and covers the Operational Range Assessment Program and Military Munitions Response Program. Under this IDV, the Corps of Engineers issues task orders for environmental remediation and compliance support services, including field investigations, risk assessments, remedial actions, and construction activities related to military munitions response and civil works cleanup. The contract was originally solicited to support the Army's ongoing recovery and environmental compliance efforts, with evaluation criteria emphasizing experience on comparable projects valued over $1 million. The $5,000 delivery order previously mentioned was issued as a task order under this broader IDV, demonstrating the entity's role as a prime contractor capable of managing multiple task orders from the funding agency.
U5W8QTHAGNJ8 562910
Not listed 4585 Pacheco Blvd #200, Martinez, CA 94553, USA
5/24/23 2/23/27