Horizon Environmental Services, Inc.

Horizon Environmental Services, Inc., doing business as Horizon Environmental Enterprises, is a woman-owned small business based in Cranberry Township, Pennsylvania, providing hazardous and non-hazardous waste collection, transportation, disposal, environmental testing, and technical assessments primarily to the Defense Logistics Agency Disposition Services as a prime contractor. The company operates as a Subchapter S corporation and competes predominantly under set-asides, though it has demonstrated competitive strength in full-and-open federal procurement as well.

Horizon Environmental's customer concentration is extreme and essentially monolithic. The Defense Logistics Agency Disposition Services accounts for 4,862 awards—99% of Horizon's total federal award volume—and $153.1 million of the company's $163.6 million combined potential value across all awards (94% of total dollars). The remaining customer agencies—the Army Materiel Command's TACOM Life Cycle Management Command ($2.5 million), the Army's Contracting Command Detroit Arsenal ($1.4 million), the Drug Enforcement Administration ($148 thousand), and the Environmental Protection Agency ($21 thousand)—represent marginal activity by comparison. This concentration in a single federal customer and single product line (waste management at military installations) is a defining characteristic of Horizon's business model.

Horizon operates primarily through five large indefinite delivery contracts with the Defense Logistics Agency, which collectively support the majority of its task order activity. The largest parent vehicle—Indefinite Delivery Contract SP450020D0018—carries 1,346 task orders valued at $12.2 million combined; SP450015D0009 holds 988 task orders ($8.4 million); SP450010D0011 supports 580 task orders ($8.1 million); SP450023D0013 covers 571 task orders ($19.5 million); and SP450011D0003 encompasses 470 task orders ($4.2 million). These five vehicles account for the vast majority of Horizon's federal contracting activity, demonstrating that the company's federal footprint is built almost entirely on task order execution under existing DLA Disposition Services indefinite delivery vehicles rather than on standalone contracts or new vehicle wins.

Recent activity shows significant deceleration. Horizon received 614 awards in 2024, 376 in 2025, and only 47 awards in the first four months of 2026. This sharp decline—a 39% year-over-year drop from 2024 to 2025 and a projected 87% drop for 2026 if current pace continues—signals either loss of task order volume from DLA Disposition Services, transition to fewer but larger orders, or disruption in the company's relationship with its primary customer. The recompete cliff shows 114 awards (combined potential value $3.7 million) with ultimate completion dates within the next twenty-four months, representing material recompete exposure relative to the company's recent transaction volume but modest in absolute dollars.

Horizon's capability portfolio centers on waste management for military installations: hazardous and non-hazardous waste collection, transportation, and disposal at Tinker Air Force Base (Oklahoma), McAlester (Oklahoma), Corpus Christi (Texas), Jacksonville (Florida), and other central U.S. military logistics hubs. Representative work includes a $393,750 delivery order from DLA Disposition Services for waste management at McAlester, a $362,250 order for environmental services at the same location, and numerous task orders in the $5,000 to $50,000 range for collection and disposal of universal wastes, compressed gases, polychlorinated biphenyls (PCBs), per- and polyfluoroalkyl substances (PFAS), paint waste, and specialized sludges. The company also holds a $150,000 Blanket Purchase Agreement with the Department of the Air Force Reserve Command (through July 2029) for wastewater testing, liquid and sludge removal, and tank cleaning at the 911th Airlift Wing in Coraopolis, Pennsylvania—the only meaningful secondary contract vehicle in Horizon's portfolio.

Set-aside posture across Horizon's prime footprint is mixed. The source data shows that Horizon competes under Total Small Business set-asides on a substantial portion of its recent awards but also wins contracts in full-and-open procurement without set-aside protections. This flexibility—competing both set-aside and unrestricted—is consistent with WOSB and small business certifications but suggests Horizon has developed sufficient competitive capability to pursue unrestricted opportunities rather than relying solely on small-business carve-outs.

Horizon has no material subcontract footprint in the source data; 4,915 of 4,916 awards (99.98%) are prime awards, with only one sub-award listed. The company operates as a direct prime contractor to federal agencies rather than as a subcontractor to larger integrators.

The company's federal footprint is wholly dependent on sustained task order flow from a single customer (DLA Disposition Services) against a narrow set of established indefinite delivery contracts. The sharp recent decline in award volume and the absence of new IDV vehicle wins or customer diversification create material business continuity risk. Horizon Environmental Services is a capable, established provider of specialized waste management services to the Department of Defense, but its growth trajectory has stalled, and its competitive vulnerability is heightened by its extreme customer and contract-vehicle concentration.

HES, is a small bus. firm providing haz. & non-haz. waste mngmt. services to include: Trans. and disposal, site remediation, lab packing, on-site waste mngmt. services (90 day TSDF mngmt. programs) etc.