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Trusted Civil Engineering & Environmental Consulting Services
JNM Engineering has been delivering professional civil engineering, land surveying, and environmental consulting services for over 15 years. Our expertise spans land development design, stormwater management, and natural resource conservation, serving municipalities, developers, and homeowners across the Baltimore-Washington corridor. We prioritize personalized service, leveraging cutting-edge technology and a client-focused approach to address project challenges of any scale.

Our team's extensive experience in regulatory compliance and sustainable design ensures projects meet both environmental standards and client objectives. Founded on principles of integrity and technical excellence, we maintain a commitment to innovation while fostering long-term client relationships through transparent communication and tailored solutions.
Services
Stormwater Management Land Surveying Environmental Site Design Forest Conservation Drainage Solutions Civil Construction Plans Floodplain Studies Arborist Reports Land Development Design Sediment Control
Highlights and features
  • We offer 15+ years of specialized expertise in Maryland land development regulations
  • Our team includes licensed professional engineers, surveyors, and LEED-certified professionals
  • We provide personalized service with direct owner involvement on every project
  • Our designs integrate advanced technology for precise, cost-effective solutions
  • We maintain a 100% client retention rate through proactive communication and problem-solving
Services
Stormwater Management Design
Our stormwater management designs include customized reports, construction specifications, and maintenance schedules tailored to project needs. We handle small-scale practices and large regional ponds, ensuring compliance with environmental regulations while protecting water quality. Our engineers optimize systems to reduce pollutants and sediment runoff into local waterways.
Environmental Site Design
We implement low-impact development techniques that minimize post-construction runoff impacts. Our ESD solutions combine planning strategies and green infrastructure to meet Maryland's mandatory requirements while preserving natural site features. This approach reduces long-term maintenance costs and enhances project sustainability.
Forest Conservation Planning
Our DNR-qualified professionals create forest conservation plans that identify areas for retention or replanting. We help clients meet Maryland Forest Conservation Act obligations while minimizing planting requirements. Early-stage planning ensures compliance with regulatory standards and reduces project costs.
Land Surveying Services
We provide precise land surveying for development projects, including boundary determination and topographic mapping. Our certified surveys support accurate site design and regulatory submissions. Advanced equipment ensures data accuracy for projects ranging from residential lots to large commercial developments.
Drainage Solutions
Our engineered drainage plans address erosion and flooding caused by increased rainfall intensity. We conduct site inspections and hydrological analysis to create customized mitigation strategies. Solutions include stormwater tax credit-eligible systems that help homeowners reduce property damage risks.
People
James W. Witmer
Founder & Professional Engineer
James Witmer, a 2002 Frostburg State University graduate, brings 15+ years of civil engineering experience. Licensed in Maryland as both engineer and surveyor, he holds LEED certification and specializes in sustainable land development practices.
Questions
What civil engineering services do you specialize in?
We specialize in stormwater management, land surveying, environmental site design, forest conservation planning, and drainage solutions for residential and commercial projects.
Do you serve areas outside Maryland?
While based in Maryland, we serve projects in Washington DC and surrounding jurisdictions, with expertise in regional regulatory requirements.
Can you help with stormwater tax credits?
Yes, we assist homeowners with RainScapes program applications and design stormwater management systems eligible for tax credits and rebates.
Are your engineers licensed professionals?
Our team includes licensed professional engineers and surveyors with specialized certifications in arboriculture, sediment control, and sustainable design.
How do you handle complex land development projects?
We use advanced technology and early-stage planning to address challenges, maintaining direct owner involvement to ensure cost-effective, compliant solutions for projects of all sizes.