Company Info

  • Est. 1979
  • Annual Vol Not Provided

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Our Story

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

Commercial Experience

Airport Runway Animal Hospital / Kennel Apartments & Condominiums Arena / Stadium Assisted Living Athletic Field Auto Dealership / Service Bank Casinos Church / Synagogue Club House / Community Center Data Centers - Mission Critical Design Build Fire / Police Station Fitness Center Gas Station Golf Course Grocery Stores Hospital / Nursing Home Hotel / Motel Industrial Maintenance Laboratory Library Manufacturing Plant Marine Medical Office Misc Project Mixed Use Museum Non-Building Construction Non-Residential Building Office Building Park / Playground Parking Garage Post Office Power Generation & Distribution Radio / Television Station Renewable Energy Restaurant Retail Store School / College / University Secure and Shielded Facilities Storage Facility / Warehouse Tennis Court Terminal - Airport / Bus / Railroad Theme Park Utilities

Regions & Counties Serviced

  • California-Los Angeles and Vicinity
  • Orange, Riverside and San Bernardino Counties

California 4

  • Los Angeles
  • Orange
  • Riverside
  • San Bernardino

Our CSI Codes

02 01 65 - Maintenance of Underground Storage Tank Removal
02 06 65 - Schedules for Underground Storage Tank Removal
11 01 10 - Operation and Maintenance of Vehicle and Pedestrian Equipment
11 10 00.00.01 - Vehicle and Pedestrian Equipment
11 11 13 - Compressed-Air Vehicle Service Equipment
11 11 19 - Vehicle Lubrication Equipment
11 11 26 - Vehicle-Washing Equipment
14 45 00.00.01 - Vehicle Lifts
23 11 16 - Facility Gasoline Piping
23 12 16 - Facility Gasoline Dispensing Pumps
23 13 13.33 - Fuel-Oil Storage Tank Pumps
23 13 23 - Facility Aboveground Fuel-Oil, Storage Tanks
33 01 50 - Operation and Maintenance of Fuel Distribution Lines
33 01 50.51 - Cleaning Fuel-Storage Tanks
33 52 16.13 - Gasoline Piping
33 52 16.23 - Gasoline Pumps
33 52 19.13 - Diesel Fuel Piping
40 21 16 - Gasoline Process Piping
40 21 19 - Diesel Process Piping
40 21 23 - Fuel-Oils Process Piping
40 21 23.13 - No. 2 Fuel-Oil Process Piping
40 21 23.16 - No. 4 Fuel-Oil Process Piping
40 21 23.19 - No. 5 Fuel-Oil Process Piping
40 21 23.23 - No. 6 Fuel-Oil Process Piping
40 22 13 - Heavy-Fractions Petroleum Products Piping
41 24 29 - Lubrication Systems
41 67 13 - Plant Lube Oil System

Project Experience

  • Service Work/Repairs

Gallery

Featured Image 1
Tank Testing, Cleaning & Removal
Service Area and Locations Map for Dennis D. Rock Construction

Preferred Brands

Dresser Wayne Fuel Dispenser Equipment
Dresser Wayne Fuel Dispenser Equipment
FE Petro
FE Petro
Gilbarco/Veeder-Root
Gilbarco/Veeder-Root
Red Jacket
Red Jacket
Tokheim
Tokheim
Veeder-Root
Veeder-Root
VeriFone
VeriFone
Gasboy Fuel Dispensing
Gasboy Fuel Dispensing
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