Castle Hill Associates, LLC

Castle Hill Associates, LLC, a Service-Disabled Veteran-Owned Small Business (SDVOSB) and Economically Disadvantaged Women-Owned Small Business (EDWOSB) based in Waterville, Ohio, delivers environmental consulting, hazardous materials assessment, and facility remediation services to federal agencies as a prime contractor (99% of recent awards). The firm holds concurrent SBA certifications as a Women-Owned Small Business (WOSB) and self-certified small disadvantaged business, competing across set-aside and full-and-open vehicles with emphasis on SDVOSB and EDWOSB set-asides.

Castle Hill's capability footprint centers on asbestos and lead-based paint surveys, Asbestos Hazard Emergency Response Act (AHERA) compliance assessments, indoor air quality testing, and abatement monitoring across federal facilities. Representative work includes a $527,683 SDVOSB-set-aside definitive contract with Veterans Integrated Service Network 8 (Tampa and Brooksville VA Medical Centers) to conduct comprehensive AHERA surveys across approximately 1.5 million square feet; a $203,676 delivery order from VISN 9 for bi-annual asbestos surveillance and testing at Memphis VA Medical Center through December 2027 under the General Services Administration Multiple Award Schedule; a $1.495 million BPA call from the Department of the Army for agricultural sanitation and wash services at Fort Hood, Texas; and a $198,675 delivery order from the Department of Transportation Federal Highway Administration for wetland and waters-of-the-U.S. survey work under the National Park program.

Customer concentration is heavily weighted toward Department of Veterans Affairs components. The top five funding entities account for 42% of awards by count but 85% of combined potential value, dominated by the Department of the Army ($17 million across three awards) and multiple VISN entities—VISN 10 (12 awards, $473 thousand), VISN 6 (5 awards, $458 thousand), and VISN 15 (4 awards, $432 thousand)—reflecting decades of baseline asbestos inspections and hazard assessments at VA medical facilities. The Coast Guard contributes six awards ($102 thousand combined) primarily for radon testing under the Safe Home Initiative. This concentration signals that Castle Hill operates predominantly as a federal compliance vendor for aging-infrastructure assessments across healthcare and military installations.

Castle Hill holds positions on the General Services Administration Multiple Award Schedule (22 task orders, $1.9 million combined potential value) and a $14.75 million multiple-award blanket purchase agreement with the Department of the Army for agricultural wash services running through June 2028. The vendor also maintains a $300,000 indefinite delivery contract with VA VISN 10 for lead and asbestos survey services. Award activity has been volatile: six awards in 2022, ten in 2023, five in 2024, six in 2025, and three in the first five months of 2026. Five awards totaling $442 thousand in combined potential value complete within the next twenty-four months, presenting recompete exposure concentrated in VA facility assessments.

On Service Contract Inventory reporting, Castle Hill invoiced $528 thousand in FY2024 across approximately 1.4 FTEs, representing a single prime contract capturing federal environmental-service work above the $150,000 threshold. Government-paid rates on that SCI-reportable prime work centered on $139.86 per hour, reflecting technician and survey-specialist labor. The SCI dataset shows average subcontractor engagement at 25% of prime-contract hours, with one named subcontractor relationship; this indicates Castle Hill performs most assessment work in-house with selective subcontracting for specialized or geographic extensions. The vendor subcontracts to Oculus Inc. on an EPA Region 5–10 architect-engineer IDIQ for AHERA asbestos surveys (September 2024 award).

Castle Hill's federal footprint spans 31 distinct customer agencies over a ten-year award history, but operational depth concentrates on the VA healthcare system and Department of the Army facility management programs. The combination of multiple SBA certifications, a $14.75 million Army BPA vehicle, and recurring SDVOSB set-asides across VA VISNs positions the firm as a specialized vendor for hazardous-materials compliance and environmental remediation in federal real estate—not a broad professional services competitor, but a narrow-scope technical provider anchored to aging-facility assessment work for healthcare and defense infrastructure.

Castle Hill Associates meets the environmental consulting needs of industry and

government, specializing in asbestos, industrial hygiene, indoor air quality, leadbased

paint, environmental contamination, cultural resource studies, Section 106

process. Castle Hill delivers expertise in the remediation, testing, and field operations

required to ensure safety and compliance of business operations, renovation,

construction and demolition. Licensed for Asbestos in 10 states, plus teaming relationships,

CHA presents a nationwide Asbestos Surveying footprint. Our specialists

managed projects in over 30 states for a variety of clients, including federal, local,

and state governments, school districts, Fortune 500 companies & major industry.