MARSTEL-DAY, LLC

Marstel-Day LLC specializes in environmental consulting and engineering services for federal agencies, with deep expertise in environmental compliance, cultural resource management, and natural resource planning. The firm delivers technical assessments including Phase I environmental site evaluations, archaeological surveys, and integrated natural resources management plan updates, often supporting military installations and federal land management sites. Their work integrates regulatory frameworks such as NEPA, NHPA, and the Endangered Species Act, with a focus on mission-critical environmental stewardship for defense and interior lands. Technical capabilities span ecological monitoring, heritage resource documentation, and environmental impact analysis, underpinned by field-based data collection and stakeholder engagement protocols. The company maintains a strong, recurring relationship with the Department of Defense, providing environmental support for base sustainment, range management, and installation compliance. It also serves the Department of the Interior with cultural resource evaluations and public comment support for land-use decisions, particularly at historic sites. Additional engagements with the General Services Administration reflect a capacity to deliver environmental and integrated services under multiple-award contracts. Marstel-Day’s primary focus is environmental consulting services (NAICS 541620), where it operates as a niche provider of science-based, regulatory-aligned solutions for federal land and infrastructure stewardship. Secondary work in engineering services (541330) and shipbuilding support (336611) demonstrates adaptability across defense infrastructure domains, though environmental compliance remains its central market position. As a Virginia-based firm with no formal government certifications, Marstel-Day positions itself as a subject-matter expert in federal environmental compliance, relying on technical credibility and consistent performance rather than socioeconomic designations. Its geographic presence in Fredericksburg, VA, supports proximity to key DoD and DOI operational hubs, enabling responsive, on-site delivery of complex environmental projects.