Business Details
27 Years
experience
Agricultural Engineering & Consulting Services
Established in 1999, De Haan Grabs & Associates (DGA Engineering) is a private agricultural engineering and consulting firm specializing in livestock production facilities. With over 300 facilities across 16 states and international locations, we serve clients nationwide, offering expertise in dairy, beef, swine, and poultry operations. Our team prioritizes animal health, environmental stewardship, and client-driven growth through innovative design and collaborative consulting. We focus on creating state-of-the-art barns that enhance production efficiency and livestock well-being. Communication is central to our process, ensuring client needs are met while planning for sustainable growth.Our niche expertise in agricultural engineering sets us apart, as we stay current with research and case studies to deliver superior solutions. We are committed to promoting animal and environmental stewardship, helping clients maximize production while adhering to regulatory standards. Our services include facility design, ventilation, manure handling systems, permitting, and grant writing. With offices in North Dakota, Nebraska, and Minnesota, we provide personalized support for farmers, ranchers, and rural communities. Our team of certified engineers and specialists brings decades of combined experience to every project, ensuring technical excellence and client satisfaction.
Services
Facility Design
Ventilation Systems
Manure Handling
Permitting Assistance
Structural Engineering
Nutrient Management
Barn Expansion
Energy Audits
Grant Writing
Risk Assessment
Details
- Year established: 1999
Highlights and features
- We have designed over 300 livestock facilities across 16 states and internationally.
- Our team includes TSP Certified professionals for NRCS EQIP projects.
- We combine 20+ years of agricultural engineering experience with cutting-edge research.
- Our designs prioritize animal health, environmental stewardship, and regulatory compliance.
- We offer end-to-end services from concept to construction consultation.
Associations and certifications
- TSP Certified
Services
Facility Design
Our facility design services create customized livestock barns that enhance production efficiency and animal welfare. We integrate ventilation, manure handling, and structural integrity into every project. With over 300 completed facilities, we deliver solutions tailored to dairy, beef, and swine operations while ensuring environmental compliance.
Manure Handling
We design advanced manure handling systems that improve waste management and regulatory compliance. Our solutions include sand separation, storage, and nutrient management planning. These systems reduce environmental impact while optimizing operational efficiency for dairy and livestock producers.
Permitting Assistance
Our team provides comprehensive permitting services for agricultural facilities, including air quality, water management, and zoning approvals. As TSP Certified consultants, we streamline the NRCS EQIP application process and ensure compliance with federal and state regulations for livestock operations.
Structural Engineering
We offer structural engineering services for agricultural buildings, including precast concrete and freestall designs. Our expertise ensures facilities meet safety standards while accommodating growth. We address load requirements, material selection, and long-term durability for livestock environments.
Grant Writing
Our REAP and EQIP grant writing services help clients secure funding for facility upgrades and environmental projects. We prepare detailed applications aligned with USDA guidelines, maximizing approval chances while reducing clients' administrative burdens.
People
Daniel DeHaan
President
Daniel DeHaan, M.S., P.E., leads DGA Engineering with 20+ years of agricultural engineering experience. He specializes in livestock facility design and environmental compliance, driving innovative solutions for dairy and beef operations nationwide.
Nathan Pesta
Vice President
Nathan Pesta, P.E., oversees project execution and technical excellence at DGA Engineering. With expertise in structural design and permitting, he ensures client projects meet regulatory standards while optimizing operational efficiency for livestock producers.
Brook Pesta
Office Manager
Brook Pesta manages DGA Engineering's daily operations and client communications. Her administrative leadership ensures seamless project coordination and grant application processing for agricultural clients across multiple states.
Dalton Rademacher
Project Engineer
Dalton Rademacher designs irrigation systems and livestock facilities as part of DGA's engineering team. He focuses on sustainable water management solutions and innovative barn designs that improve animal health and production efficiency.
Shad Mack
Project Engineer
Shad Mack contributes to agricultural infrastructure projects at DGA Engineering. His work includes facility design and environmental compliance, supporting clients in achieving regulatory approval and operational improvements for livestock operations.
Questions
What agricultural engineering services does DGA offer?
DGA provides facility design, ventilation systems, manure handling solutions, permitting assistance, and structural engineering for dairy, beef, swine, and poultry operations.
How many livestock facilities has DGA designed?
We've completed over 300 facilities across 16 U.S. states and international locations since 1999.
Do you serve clients outside the Midwest?
Yes, while based in North Dakota, we serve agricultural clients nationwide and internationally through remote collaboration.
Are you certified for NRCS EQIP projects?
Yes, DGA is TSP Certified to assist clients with NRCS EQIP applications and implementation.
What makes DGA different from other engineering firms?
Our exclusive focus on agricultural engineering, 20+ years of livestock facility experience, and commitment to animal health and environmental stewardship set us apart.
How does DGA approach project design?
We begin with client consultations to understand goals, then create customized designs that balance production efficiency, regulatory compliance, and long-term sustainability.
