Updated May 2026 · Maryland construction documentation guide — SHA standards, Maryland OSHA state plan, MHIC licensing, and Chesapeake Bay Critical Area compliance
Quick Answer
Maryland OSHA (state plan) governs private-sector construction — not federal OSHA. SHA uses AASHTO T180 Modified Proctor. MHIC license required for residential home improvement. Maryland's Chesapeake Bay Critical Area Law creates environmental compliance documentation for construction within 1,000 feet of tidal waters. The DC/Baltimore mega-region creates some of the most demanding construction documentation environments in the Mid-Atlantic.
Maryland State Highway Administration (SHA) follows AASHTO T180 Modified Proctor for state highway compaction. Maryland's urban highway projects — particularly I-270, I-495 Capital Beltway, and I-695 Baltimore Beltway — involve complex multi-agency coordination documentation. SHA projects near airport approach zones require additional FAA coordination documentation; projects near the Chesapeake Bay watershed trigger MDE (Maryland Department of the Environment) stormwater permits.
SHA uses electronic documentation systems for major highway projects. Daily reports, compaction logs, and material certifications are submitted electronically. SHA's MdProperty documentation management system (for some projects) requires contractors to register and submit through the portal — understand the system requirements before starting SHA work.
MOSH is an active State Plan program with regular inspections in Baltimore, Prince George's County, Montgomery County, and other major construction areas. MOSH has focused construction enforcement on fall protection (leading cause of construction fatalities in Maryland), trenching and excavation, and struck-by hazards. All standard OSHA documentation must be maintained: OSHA 300 logs, incident reports, toolbox talk records, equipment inspection logs, competent person documentation, and training certificates.
Maryland's Critical Area Commission (CAC) enforces the 1,000-foot Critical Area buffer around tidal waters — one of the strictest coastal construction regulations in the US. Construction in the Critical Area requires CAC permit documentation, impervious surface tracking documentation, and buffer compliance records. Any disturbance of vegetation within the Critical Area must be documented and mitigated with planting plans that are tracked through project completion.
MDE (Maryland Department of the Environment) NPDES stormwater permits are required for construction disturbing more than one acre, with SWPPP documentation of BMP installation, weekly inspections, and post-storm reports. Maryland's stormwater management regulations are among the most comprehensive in the US — documentation of on-site stormwater management system installation is required before final inspection approval.
Baltimore City / Baltimore County
Healthcare (Johns Hopkins, University of Maryland Medical), port infrastructure, and I-695 beltway reconstruction. Baltimore City has its own building department and MOSH enforcement.
Montgomery County
DC suburb with significant commercial, NIH/NIST federal, and transit (Purple Line) construction. Most active commercial market by permit volume.
Prince George's County
DC border county. Joint Base Andrews military construction, Washington Commanders stadium, and significant warehouse/logistics development.
Anne Arundel / Chesapeake Area
Annapolis, Severn, and Bay area construction. Critical Area documentation required on nearly every project. Naval Academy and Fort Meade federal work.
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