Page Title

Harbor 69-12KV Substation

Oltmans partnered with ABB, Inc. to design and build a new turn-key 69/12kV 112MVA Harbor substation. Due to its proximity to the Disneyland Resort special provisions were made during construction to control noise and restrict construction parking. The final design of the project required special noise control and a design that blended into the street to hide all substation equipment from street and rooftop view.

The project includes:

  • One partially enclosed structure holding two power transformers with appropriate ventilation, fire wall and oil containment.
  • One completely closed building holding the GIS/ Metal Clad Switchgear, relays, control panels, capacitor banks, etc.
  • Two outdoor pad mount SL&P transformers with ATS.
  • Fire alarm, security system, motor operated gate, venting, HVAC, lighting, landscaping, grading, grounding system, noise control, restroom and asphalt paving.

Square Footage: 37,400 s.f.

Pacific Medical Office Building

Design / Build project of a two (2)-story core and shell medical office building for Pacific Medical Buildings. Oltmans scope included a 25,218 s.f. facility (68,535 s.f. site) with painted concrete tilt-up panels, storefront and curtain wall glazing as well as all associated on and off site work.

Square Footage

Total Building Area: 25,218 s.f.

Lot: 68,535 s.f.

Amazon

Goodman Commerce Center Eastvale

Goodman Commerce Center Eastvale is one of the largest, mixed-use developments in Southern California. Spanning 200 acres, the Center will provide Class A logistics, retail, medical and business park facilities. Oltmans Construction provided preconstruction and construction services on industrial buildings 1, 2, & 3, including building TIs, as well as the 8 buildings that make up the business park, infrastructure and mass grading work. .

Square Footage

Building #1 1,007,705 s.f / Includes a 4-Level Mezzanine Inside The Building. Overall Building Area: 2,700,305 s.f.

Building #2 1,033,192 s.f.

Building #3 373,522 s.f.

Business Park (Buildings 1-8) 180,312 s.f. total, eight (8) multi-tenant and free standing buildings.

Infrastructure/Mass Grading Work Construction of a pedestrian bridge with two (2) elevators which crosses Goodman Way connecting to a 4.7-acre newly constructed parking lot (off-site), new streets, widening and improvements on Hamner, Bellegrave, Cantu-Galleano. Project is surrounded by different county lines and Oltmans coordinated with the City of Eastvale and the City of Ontario as well as Cal Trans, SCE and The Gas Company. Additional work included 3,200 ft. of industrial sewer, 6.1-acre detention basin/bioswales, curb & gutter, street lighting, signalization, and median & perimeter landscaping.

Door Components

Door Components consolidated their two existing locations into the new facility to enhance their ability to manufacture stainless steel metal doors and window frames. Oltmans provided design-build services and self-performed the concrete construction. The futuristic facade on the 93,183 sf concrete tilt-up gives it a purposeful skewed look. The unique 13,000 sf of interior office space includes a 2-story window wall that allows viewing into the manufacturing area from the offices. The building is constructed utilizing advanced seismic stability and energy efficiency.

Square Footage 93,183 s.f.

California Institute Of Technology (Caltech) Crellin Lecture Hall Room 151

Oltmans Construction Co. provided preconstruction and general contracting services for the Crellin Lecture Hall project at the California Institute of Technology. The design-build renovation of Crellin Lecture Hall Room 151 included an update to the existing 50 seat lecture hall with new seating and finishes, replace the demonstration bench, refurbish the chalk boards, update the AV system and improve the HVAC. The project team successfully completed the project with little disruption to the current occupants and was mindful to not disrupt ongoing operations.

Square Footage950 s.f.

Living Spaces - Mission Valley

Living Spaces – Mission Valley

Oltmans renovated and transformed an existing K Mart retail building into a new 100,000 s.f. furniture showroom for Living Spaces. The tenant improvement work involved the build-out of custom themed areas like the “Under the Sea” kids furniture showroom and the “Westside Loft” space with wood and stone design accent walls. Additional areas included offices, cashier center, restrooms, and back of house storage area. The building received all new finishes including new ceiling with exposed ducting and lighting, various floor and paint types, and upgraded lighting package and controls.

Square Footage


100,000 s.f.

Stater Bros. Dry Goods Building

Winner of the Bernard B. Barber Jr. Award of Excellence 2008


ENR California Award of Merit Winner in the Industrial Category, 2009.

The Dry Goods Building was a 1,200,000 s.f., cross-dock facility with 2-1/2 acres of tenant improvements and more than 160 dock positions. The 40’-clearance warehouse had 100’ wide continuous staging areas and a shrinkage compensating concrete floor with steel-armored joints and a Traprock hardened finish throughout. More than 900 skylights provided the majority of the required daytime illumination and energy efficient T5 fluorescent fixtures with motion sensors were installed for nighttime use. The building was completely racked and overhead trash conveyors continuously removed container debris. A forklift maintenance area with a 10 ton overhead crane was constructed within the building to service the client’s 500 forklifts. 48,000 s.f. was dedicated to forklift parking alone and the building boasts the largest and most advanced automated forklift battery maintenance system in the country. Enhanced security features included nearly 800 cameras which are monitored 24 hours a day. Since the facility is continuously operated, nearly 1,500 employees pass through the main entrance turnstiles daily via an advanced access control system.

Square Footage


1,200,000 s.f.

Stater Bros. Corporate Office

Winner of the Bernard B. Barber Jr. Award of Excellence 2008

Stater Bros. Markets is the largest privately owned supermarket chain in southern California. New facilities were needed to consolidate and replace eight existing facilities total 1.7 million s.f. into campus of 2.2 million-sf energy and operationally-efficient facilities. Consolidation and design for high-performance buildings were the goals to reduce the cost of operation and maximize efficiency. Oltmans was brought on board as the design-build contractor to achieve these goals. Oltmans provided value-engineering services and hired regional architectural and engineering firms for an integrated project delivery.

This state-of-the-art concrete tilt-up/steel entry building with aluminum panels consist of a computer room with raised floor and a FM 200 fire suppression system as well as high-end conference rooms, executive suites, training centers, auditorium/conference rooms with movable partitions and circle soffit ceiling, interior and exterior break rooms, kitchen, exterior patio and courtyard area with floating canopies and stained concrete. Other features include an open common corridor with precast concrete fins that are 35 ft tall with full height glass walls and custom steel hand railing with wood caps, stone flooring that includes a 75 degree angle ceiling and a HVAC – central exterior plant. The lobby consists of mahogany veneer wall panels, wood doors and jams along with all wood trim that are integrated to come together as a single system. The Rotunda, a 40 ft high radius area consists entirely of wood veneer panels and in the center of this area is a radius reception desk which is also wood veneer with a stone top.

A security system is installed and can be centrally monitored at the newly constructed security office and includes card readers at all exterior entries and interior entrances beyond enclosed lobby. Security cameras are mounted throughout the interior and exterior campus including common areas and IDF support areas.

The original design provided by the Client’s out of state architect was used as a bench mark for scope of work and pricing. Oltmans’ constructability and value engineering process saved the Client $ 8 million while increasing efficiency throughout the campus, and in the following areas related to the corporate office facility:

  • Site Lighting was reduced while maintaining city foot candle requirements and the Client’s security lighting requirements.
  • Reduced redundancy IT operations back-up infrastructure, while maintaining a Tier 3 data center. There were also significant savings in distribution design and lighting layout.
  • The mechanical system was redesigned from a chilled water VAV system to a more cost and energy efficient water-cooled VAV system, resulting in the elimination of a substantial mechanical basement to accommodate a chilled water plant. The design also incorporated an additional 10,000 s.f. of capacity for future tenant improvements and growth to avoid disruption of operations in the future.

Square Footage: 120,615 s.f.

Stater Bros. Climate Controlled/Perishable Building

ENR California Award of Merit Winner in the Industrial Category, 2009

The 700,000 s.f. cold storage distribution center is a 40-ft-high concrete tilt-up building with various climate control areas. The multiple climate areas allows the shipping of all temperature sensitive products from one building.

This cold storage facility embraces a newer technology that is more efficient with its high performance industrial refrigeration compressors. A glycol system is utilized to heat the freezer floor, air curtains and cools the Banana Rooms.

A 60,000 lb. ammonia refrigeration system cools the entire warehouse facility. Temperatures in the building will range from 55 to -20 degrees Fahrenheit. The roofing consists of a high efficient single ply PVC membrane. To meet the budget and schedule challenges of the owner, this project was led by Oltmans Construction Co., which hired the project architect and structural engineer. The project required the early delivery of concrete floors in order to meet the owner’s requirements for a racking system installation. The phasing of the schedule required early ordering of the structural steel prior to completion of the building drawings and the permitting/plan check process.

The schedule required the general contractor to work closely with the design team for coordination of the early structural steel procurement and final installation of the racking system as well as maintain a close relationship with the subcontractors for scheduling, delivering and installation of the structural steel, racking system, and refrigeration coils.

Atkinson / Clark Construction – Tenant Improvement

Oltmans Special Projects Division was hired to provide general contracting services as well as MEP and fire/life safety design-build services for this 2-level, 48,800 s.f., tenant improvement project located in a multi-story Class A office building. Prior to construction, the building was an empty shell with virtually no interior improvements.

A notable accomplishment was Oltmans’ ability to quickly adapt to project changes such as the truncated schedule. The original construction schedule was condensed from 12-weeks to just 60-days with no additional costs to the Client. Oltmans was able to push the subcontracting team to complete the project ahead of the truncated schedule.

The scope of the project included all new VAV zone boxes, ceilings, walls, doors, flooring and all finishes. The newly renovated floors featured offices, bull pen area, reception area, conference rooms, breakrooms, and kitchens.

Square Footage: 48,800 s.f.

Airgas T.I.

Airgas T.I.

This project was the tenant improvement of a 2-story Class A office building. The existing building was an empty shell with no interior improvements. Oltmans completed the project within a 10-week schedule and included a new lobby/reception area, breakroom, kitchen, executive offices, conference rooms, bull pen and computer/data room with custom finishes throughout. The project’s infrastructure upgrade included new mechanical and electrical components as well as a FM 200 pre-action fire suppression system and a new security and computerized control system.



Square Footage
38,563 s.f.

NAPA AUTO PARTS Distribution Center – Ontario

Oltmans Construction Co. was the design/build contractor on this Type III-B, fully sprinklered, build-to-suit project for NAPA AUTO PARTS. As the design/build contractor, Oltmans was responsible for the complete process, which required hiring and managing the design team, securing permits, issuing subcontracts and coordinating design/build MEP trades. A notable achievement was completing the design phase within a two month timeframe to maintain the completion date per the accelerated project schedule.

The project’s scope involved the renovation of an existing warehouse facility. The warehouse retrofit required removing of existing floor sealer, prepping the slab, installing new densifying product, and polishing the floor. Oltmans cut-in and installed five (5) hydraulic dock levelers, a back-up generator, as well as patch and painted the building’s exterior surfaces and roof. The project required the build-out of a new retail store, H3/H4 (Hazardous) Rooms, and an Aerosol Room.

To accommodate the work staff, the existing office area was demolished for the construction of new interior offices. The new office area included cubicle farms, executive offices, a training room with accordion partitions, a kitchenette, restrooms, lockers, and indoor/outdoor break rooms.

The site work involved the installation of a new driveway as well as additional parking spaces and landscaping.

Square Footage

New Office Area: 12,673 s.f.

New Retail Area: 3,061 s.f.

Existing Warehouse Area: 175,773 s.f.

Existing Total Building Area: 191,000 s.f.

Total Site Area: 426,518 s.f.

Carpenter’s Training Facility-Buena Park

The project is a two-story, concrete tilt-up, office and training center. The building is 107,000 s.f. inclusive of a 28,000 s.f. mezzanine and features the signature 30’ tall radiused rotunda entry. The project’s scope includes both shell & core/tenant build-out work. High End finishes include native and imported stone, polished concrete floors, cherry wood paneling, and wainscoting. The building features a 24,000 s.f. training center, classrooms, executive offices, boardroom, and a 250 person meeting hall. Sophisticated audio and visual systems are also utilized throughout the building.

Square Footage


107,000 s.f.

Lisi Aerospace (Hi-Shear) Bldg 4

Lisi Aerospace Phase II: Construction of new office space.

Lisi Aerospace Phase I

Hi-Shear Corporation, an aerospace branch of Lisi Group, is a leading designer and manufacturer of advanced aerospace fasteners and installation tools used in commercial, military and space vehicles.

Oltmans’ scope of work was to provide design-build services for the construction of a new plating/manufacturing/testing facility for Lisi. The new facility is a prefabricated metal building that accommodates six plating lines and office space. Located outside of the facility is a waste-treatment area that includes multiple waste containers with associated filtration systems. This project involved several highly technical and challenging components including:

Staging and Logistics

Lisi’s customer, Boeing, had to approve the products coming out of the new facility before they could stop production at their old plant. Therefore, Oltmans had to construct the new building first, get it under operation, test the quality and then demolish the old plant. Due to this constraint, the new building was constructed adjacent to the old building on the company’s existing parking lot. The project team worked with neighboring businesses to lease out parking spaces during construction for Lisi employees. Future plans involve constructing a new parking lot on top of the old building’s site.

Existing Soil Conditions

Several existing monitoring wells (water & vapor) within the work area had to be lowered (below level of work) and then raised back after completion of construction work.

“Just in Time Deliveries”

The project included a lot of custom equipment; several pieces of equipment had to be shipped in from out-of-state. Due to the minimal staging area, this involved major coordination of deliveries for the equipment to arrive “just in time”.

BIM (Building Information Modeling)

Oltmans’ BIM services played a vital role in keeping the project on schedule. Through the use of BIM, eighty (80) conflicts had been resolved during the design phase, which made the construction process relatively seamless. It allowed for the project to be completed on-time and on-budget.

Square Footage

24,000 s.f.

Trader Joe's

Trader Joe’s

This unique design/build project consisted of an existing 500,000 s.f. tilt-up shell which was converted into a multi controlled temperature space. An additional 3,000 amp electrical service was installed to power the ammonia cooled refrigeration system and the eighteen (18) roof-mounted heat pumps. The 130,852 s.f. refrigerated space is cooled to 35° utilizing two (2) 200+ ton compressors, two (2) evaporator condensers and ten (10) evaporator coils. The 149,760 s.f. conditioned space is cooled to 65° by twenty (20) roof-mounted heat pumps and large prop fans which distribute cold air. Also cooled by the ammonia refrigeration system are a 6,000 s.f.”Cheese Repack Room” and a 1,344 s.f. “Blue Cheese Room”, which both feature epoxy-coated floors to maintain a sanitary surface and are kept at 40°-45° The “Blue Cheese Room” required dedicated refrigeration and air circulation to prevent active mold spore cross contamination with the other “Cheese Rooms”. The 223,010 s.f. dry storage space remains at ambient temperature, and required very few upgrades.

Square Footage


500,000 s.f.