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Founded In: 1979
Annual Vol: Not Provided

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Dennis D. Rock Construction is a division of Lensaro Inc., a California Corporation. The company maintains both a General Engineering, (A), and a General Contracting, (B-1), California Contractors license, (CSLB # 474674), with a (HAZ) hazardous materials certificate.

Operations began in 1979, and originally efforts were divided between residential, commercial/industrial construction and operating as a subcontractor to petroleum industry contractors for projects both underground and aboveground. In early 1983, the decision was made to specialize in environmental projects, especially those dealing with underground issues, both as a prime contractor and a subcontractor.

Projects include due diligence surveys, phase I and phase II site assessments, underground and aboveground storage tank management programs, installation of underground and aboveground storage tank monitor systems, UST degassing per SCAQMD rule 1149, tank removals and fuel system installations, design and construction of storm water drainage, discharge and pretreatment systems, design and site fabrication of remedial water systems, installation of methane monitoring systems, design and implementation of remedial monitoring systems and full site remediation using state of the art internal combustion vapor extraction systems and other technologies. Also included is the installation of alternative energy systems in both commercial and residential applications.

In 1990, to compliment the construction services, we expanded to include full environmental engineering services and added the use of a patented and AQMD permitted vapor extraction process for the in situ remediation of solvents and chlorinated solvent contaminated areas. These additions allow us to offer our clients a more complete and competitive package, with better control over project management/development, scheduling, and budgets. The company also initiated the first comprehensive vapor extraction site characterization and evaluation testing program using a standardized protocol, which is now used by several other companies.

What We Do

Products/Services Relating to Gasoline Station Equip.--Installation
Products/Services Relating to Tank Testing, Cleaning & Removal

Project Experience

Service Sector:
Project Types:
New Alterations/Renovations Service Work/Repairs
Project Size:
Up to $1,000,000
Airport Runway
School / College / University
Fire / Police Station
Gas Station
Golf Course
Hospital / Nursing Home
Hotel / Motel
Industrial Maintenance
Manufacturing Plant
Apartments & Condominiums
Office Building
Power Generation & Distribution
Terminal - Airport / Bus / Railroad
Church / Synagogue
Retail Store
Theme Park
Arena / Stadium
Parking Garage
Club House / Community Center
Mixed Use
Secure and Shielded Facilities
Park / Playground
Storage Facility / Warehouse
Grocery Stores
Assisted Living
Renewable Energy
Design Build
Data Centers - Mission Critical
Auto Dealership / Service
Misc Project
Non-Building Construction
Athletic Field
Tennis Court
Non-Residential Building
Animal Hospital / Kennel
Fitness Center
Medical Office
Post Office
Radio / Television Station

Service Areas

Preferred Brands & Manufacturers

Dresser Wayne Fuel Dispenser Equipment
Dresser Wayne Fuel Dispenser Equipment
FE Petro
FE Petro
Red Jacket
Red Jacket
Gasboy Fuel Dispensing
Gasboy Fuel Dispensing
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