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50+ Years
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Emergency
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Expert Underwater Inspection & Repair Services for Industrial Clients
Lindahl Marine Contractors has been a trusted leader in underwater inspection, maintenance, and repair services since 1974. Our team of highly trained professionals specializes in addressing complex underwater challenges for power plants, steel mills, municipalities, and governmental agencies. With decades of hands-on experience, we provide tailored solutions that prioritize safety, efficiency, and precision. Our personnel average 15 years of expertise in contaminated diving, power plant operations, and confined space projects, supported by rigorous safety protocols and industry certifications. We maintain a flawless record in critical projects, including 180-foot dives completed accident-free for the U.S. Army Corps of Engineers. Our comprehensive insurance coverage and cutting-edge equipment ensure clients receive reliable, high-quality service for every assignment.

From sediment removal to underwater welding, we deliver results in all weather conditions, backed by a 4-hour emergency response commitment. Our partnerships with clients begin early in project design phases to optimize methodology and budgeting. Recognized for completing over 200,000 cubic yards of sediment removal and miles of tunnel inspections, we combine technical expertise with operational excellence. Our fleet includes specialized dive boats, outage support trailers, and advanced monitoring systems to handle projects of any scale. Committed to innovation and client satisfaction, we continue to set industry standards through our safety programs, employee qualifications, and proven track record of success.
Services
Underwater Inspection Power Plant Diving Sediment Removal Confined Space Diving Underwater Welding Intake Maintenance Trash Rack Repair Pipeline Inspection Vessel Salvage Zebra Mussel Control
Details
  • Year established: 1974
Highlights and features
  • We offer 4-hour emergency response for critical underwater projects
  • Our personnel average 15 years of specialized diving experience
  • We maintain a 100% project completion rate with no failed outages
  • Our team holds certifications in NDT, Hazmat, and underwater welding
  • We operate 24/7 with specialized equipment for all weather conditions
Associations and certifications
  • ABS Certified
  • OSHA Construction Safety
  • ACDE Certified Commercial Dive Institutions
  • NDT Qualified
What people say
Exceptional service Completed on time Experienced personnel Safe operations Emergency response
Services
Underwater Inspection
Our underwater inspection services provide detailed assessments of infrastructure including intake pipes, tunnels, and dams. Using advanced video technology and sonar mapping, we identify structural issues and maintenance needs for power plants and municipal water systems. Our divers perform precise evaluations in challenging environments, delivering actionable data to extend asset lifespan.
Power Plant Diving
Specialized diving operations for power generation facilities address intake maintenance, condenser repairs, and sediment removal. Our certified technicians work in active systems while maintaining safety protocols, ensuring uninterrupted power production. We perform complex tasks like butterfly valve calibration and traveling screen rebuilding to prevent operational downtime.
Sediment Removal
We remove accumulated sediment from reservoirs, dams, and industrial water systems using high-capacity pumping equipment. Our team has extracted over 200,000 cubic yards of material while maintaining environmental compliance. This service restores system efficiency and prevents structural damage in critical infrastructure.
Confined Space Diving
Our divers perform maintenance in challenging confined spaces like water storage tanks and pipeline systems. With specialized breathing apparatus and safety protocols, we execute repairs in hazardous environments while maintaining OSHA compliance. This service enables critical repairs without requiring full system shutdowns.
Underwater Welding
Certified welders perform structural repairs on underwater infrastructure using wet welding and hyperbaric chamber techniques. We maintain ABS certification for critical repairs on intake structures and marine vessels. Our welding services meet rigorous quality standards, with completed projects demonstrating long-term durability in demanding conditions.
People
Pete Perich Jr.
Co-President
Pete Perich Jr. oversees daily operations and client relations at Lindahl Marine Contractors. With over 40 years in the industry, he ensures project execution aligns with the company's safety standards and quality commitments. He manages emergency response coordination and strategic growth initiatives.
Monica Teper
Co-President
Monica Teper directs project management and client services at Lindahl Marine Contractors. She specializes in coordinating multi-crew operations and maintaining industry certifications. With expertise in regulatory compliance, she ensures all projects meet safety and environmental standards while optimizing client communication.
Questions
What industries does Lindahl Marine serve?
We serve power generation facilities, steel mills, municipal water systems, and government agencies requiring underwater maintenance and inspection services.
Do you handle emergency underwater repairs?
Yes, we provide 24/7 emergency response with a 4-hour mobilization commitment for critical underwater repair needs.
Are your divers certified for hazardous environments?
Our team holds certifications in contaminated diving, confined space operations, and hazardous material handling to work safely in challenging conditions.
Can you perform inspections in extreme weather?
We complete projects in all weather conditions using specialized equipment and safety protocols to maintain operational continuity.
What safety standards do you follow?
We maintain OSHA-compliant safety programs, including Hazmat training, CPR certification, and NDT qualifications for all technical personnel.
How do you handle large-scale projects?
Our multi-crew support system and specialized equipment fleet enable efficient execution of complex, multi-location projects nationwide.