Business Details
Geosynthetic Installation Services in Visalia
D & E Construction has established itself as a leading provider of geosynthetic installation services, delivering specialized solutions for containment applications across diverse industries. With over two decades of hands-on experience, our team combines technical expertise with field-tested methodologies to execute projects ranging from small decorative ponds to large-scale environmental containment systems. Our installation crews, averaging over 50 years of collective field experience, utilize state-of-the-art equipment and adhere to rigorous quality control protocols, including trial welds, tensiometer testing, and comprehensive documentation. The executive team brings over 75 years of combined industry knowledge, ensuring clients receive tailored solutions that balance cost-effectiveness with engineering precision. We maintain partnerships with leading material manufacturers like Agru and GSE, enabling us to offer a full spectrum of geosynthetic products.From initial bidding to final warranty delivery, our process emphasizes transparency, technical excellence, and client collaboration. Our track record includes critical infrastructure projects in waste management, mining, and water conservation, where safety and environmental compliance remain paramount. Continuous innovation drives our development of specialized deployment equipment and adherence to evolving industry standards. We maintain detailed project records, including material certifications and as-built documentation, to guarantee long-term performance. This commitment to quality has solidified our reputation as a trusted partner for complex geosynthetic installations across the United States.
Services
Landfill Liners
Reservoir Construction
Mining Leach Pads
Floating Covers
Secondary Containment
Golf Course Ponds
Tank Linings
Canal Liners
Dairy Pond Liners
Digester Lagoons
Highlights and features
- We offer over 20 years of experience in geosynthetic installation
- Our crews include IAGI-certified welders with millions of square feet installed
- We maintain state-of-the-art seaming and quality control equipment
- Our executive team has 75+ combined years in the geosynthetics industry
- We provide full project lifecycle support from bidding to warranty documentation
Services
Landfill Liners
We install high-density polyethylene (HDPE) and LLDPE geomembrane liners for municipal and hazardous waste landfills. Our systems include primary and secondary containment with leak detection monitoring. Projects follow strict environmental regulations while maintaining structural integrity for long-term performance.
Mining Leach Pads
Our geosynthetic solutions for heap leach pads ensure safe containment of chemical solutions in mining operations. We use XR-5 and Hypalon membranes with specialized underlayment protection. Systems incorporate slope stability analysis and drainage layer integration for optimal mineral extraction efficiency.
Reservoir Construction
We build lined water storage reservoirs for agricultural and municipal applications using durable PVC and polypropylene materials. Our installations include wave erosion protection and anchored floating cover systems. Each project includes hydrostatic pressure testing and long-term seam integrity verification.
Floating Covers
Our floating geomembrane covers prevent evaporation and contamination in water storage and wastewater treatment applications. We use UV-resistant materials with reinforced anchoring systems. Installations include access platforms and integrated gas venting where required.
Secondary Containment
We design and install double-lined containment systems for industrial facilities handling hazardous materials. Systems include leak detection zones and chemical-resistant membranes. Our solutions meet EPA 40 CFR Part 264 standards for above-ground storage tank protection.
People
Eric Downs
President
Eric founded D & E Construction after 26 years in geosynthetic installation. He developed specialized deployment equipment and brings hands-on expertise from seaming technician to project leadership roles.
Larry Kamp
Vice President/Technical Director
Larry provides technical leadership with 30+ years in geosynthetic material testing. He contributed to EPA guidelines and NSF Standard 54 development, ensuring our installations meet rigorous industry specifications.
Ken Evans
Secretary/Treasurer
Ken oversees financial operations with 30+ years in agricultural and trucking industries. His business acumen ensures our projects maintain cost efficiency without compromising quality standards.
Dennis Shamoon
General Manager
Dennis manages operations with 20+ years in construction QA and project management. He holds USACE certification and HAZWOPER trainer credentials, ensuring compliance with safety and environmental regulations.
Mario Garza
Operations Manager
Mario leads estimating and project coordination with 17+ years in landfill construction. His expertise ensures accurate cost projections and efficient execution of complex grading and lining operations.
Questions
What geosynthetic materials do you work with?
We install all major geosynthetic materials including HDPE, LLDPE, Hypalon, PVC, Polypropylene, and XR-5 membranes from manufacturers like Agru, Cetco, GSE, and Skaps.
Do you handle both small and large projects?
Yes, we complete projects ranging from decorative ponds to multi-million square foot mining installations, adapting our approach to each project's scale and complexity.
What quality control measures do you implement?
We perform trial welds, vacuum box testing, tensiometer checks, and comprehensive documentation including as-built drawings and material certifications for every project.
Are your technicians certified?
Our seaming technicians are IAGI-certified with decades of combined experience, ensuring proper installation techniques and adherence to industry standards.
What geographic areas do you serve?
While based in California, we complete projects throughout the western United States, with recent work in Arizona, Nevada, and Washington state.
What project documentation do you provide?
We deliver complete quality control packages including material certifications, weld logs, testing results, and as-built drawings for long-term maintenance reference.