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, operates as a prime contractor (99% of recent awards) delivering environmental consulting, asbestos and lead-based paint surveying, hazardous materials assessment, and facility remediation services to federal agencies. The vendor competes across both set-aside categories (SDVOSB and EDWOSB recur across the prime footprint) and full-and-open procurements, with concrete work anchored in AHERA compliance assessments, indoor air quality testing, and abatement monitoring across aging federal facilities.

Castle Hill's customer concentration is heavily weighted toward the Department of Veterans Affairs, which accounts for the plurality of awards but is vastly outweighed by dollar value from the Department of the Army. Among the 31 distinct federal agencies served, Veterans Integrated Service Network 10 (VA) leads by award count with 14 awards worth $789 thousand combined potential value, followed by VISN 6 and VISN 15. However, the Department of the Army dominates the potential-value ranking by an order of magnitude: three awards (two of which are Army agricultural wash BPA calls) total $17 million combined potential value, representing 86% of the vendor's total potential value across all awards. This divergence signals that while the VA generates recurring small-dollar task orders, the Army contracts anchor the vendor's overall revenue exposure. Representative work includes a $1,495,300 BPA call from the Army (February 2026) for agricultural sanitation and wash of unit equipment at Fort Hood, Texas; a $527,683 SDVOSB definitive contract with VA VISN 8 (September 2023) for an AHERA survey at the James A. Haley VA Medical Center in Tampa covering approximately 1.5 million gross square feet; a $182,802 delivery order with VA VISN 9 (December 2022) for bi-annual asbestos surveillance and testing at Memphis VA Medical Center through December 2027; and a $169,335 SDVOSB delivery order with VA VISN 21 (June 2022) for indoor air quality inspection and testing at a California facility.

Castle Hill holds a seat on the GSA Multiple Award Schedule with seven active labor categories spanning $41.31/hr (CAD/Draftsman with high school education and one year experience) through $117.88/hr (President/VP with master's degree and twenty years experience). No security-cleared roles are offered. The labor portfolio supports the vendor's capability breadth: administrative support, scientific and engineering analysis, senior project management, and executive oversight of environmental remediation programs.

Parent vehicle positions include a $14.75 million multiple-award Army BPA for agricultural wash services (award date June 2023, completion through June 2028) under which Castle Hill has issued two task orders; a $299,894 single-award SDVOSB indefinite-delivery contract with VA VISN 10 for AHERA surveys (most recent award September 2026, running through July 2031); and 22 delivery orders and calls across the GSA Multiple Award Schedule totaling $1.8 million combined potential value. The top individual IDV is the Army agricultural wash BPA, which accounts for more than half of the vendor's total potential value.

Award activity has remained modest and relatively flat year over year — six awards in 2022, ten in 2023, five in 2024, six in 2025, and five in 2026 — with only four awards (combined potential value $369 thousand) reaching ultimate completion inside the next twenty-four months, reflecting a low recompete cliff. The vendor's primary NAICS footprint is Environmental Consulting Services (54 awards), with secondary activity in Remediation Services (7 awards) and Testing Laboratories (3 awards). PSC codes center on Environmental Systems Protection — Toxic and Hazardous Substance Analysis (19 awards), with supporting work in Special Studies/Analysis — Environmental Assessments (10 awards).

Castle Hill operates as a prime contractor almost exclusively; the vendor holds only one sub award (September 2024, a sub-task with Oculus Inc. for AHERA asbestos survey of a full containment facility in Cincinnati under an EPA Architect-Engineer IDIQ). SCI-reported invoiced revenue totaled $528 thousand in FY2024 across 1.8 FTEs on a single prime contract with a median government-paid rate of $139.86/hr. FY2025 SCI data shows 0.1 FTEs and no SCI-reportable prime invoicing; across prime contracts, Castle Hill subcontracts an average of 25% of contractor hours to a single named subcontractor, indicating light sub-engagement and predominantly in-house delivery. Total federal obligation across all awards is $6 million against $22.5 million combined potential value (27% utilization), typical of indefinite-delivery and BPA vehicles with ceilings rather than actual task orders issued to date.

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.