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Department of Probation Moreno Valley, Oltmans Construction

Department of Probation, Moreno Valley

Oltmans Construction Co. provided general contracting, drywall, and door services on the tenant improvement of two (2), single-story office buildings utilized by the Riverside County Probation Department.

Modifications to the buildings include new storefront systems and exterior doors. Interior work includes new metal-stud walls, ceilings, and finishes, as well as modifications to plumbing, mechanical, and electrical. Accessible upgrades include miscellaneous site-accessibility improvements and the combining of two (2) existing restrooms to create one (1) accessible restroom.

14325 Frederick, Moreno Valley, CA: The larger of the two buildings, this tenant improvement project is a Type III-B (non-rated), one-story office, spanning 13,940 s.f. with a 581 s.f. canopy area.

14327 Frederick, Moreno Valley, CA: This tenant improvement project is also a Type III-B (non-rated), one-story office, spanning 13,623 s.f. with a building height of 20 ft. and a 317 s.f. canopy area.

Square Footage:

Building 1: 13,940 s.f.

Building 2: 13,623 s.f.


Department of Social Services (DPSS), Hemet Buildings 1-4

Oltmans Construction provided tenant improvement and exterior remodel, including site work, on four (4) single-story buildings (respectively called Buildings 1-4) for the County of Riverside’s Department of Social Services in Hemet, CA. Oltmans worked off-hours and in multiple phases while the building was completely occupied so that DPSS could remain operational while the project was under construction.

Building 1 (541 San Jacinto) received full gutting and reconstruction of an existing area to build-out new offices, classrooms, restrooms, a waiting room, etc.

Buildings 2 (545 San Jacinto) was a seismic upgrade project and Building 3 (547 San Jacinto) had minor office remodel and tenant improvement work.

Building 4 (563 San Jacinto) was an adaptive re-use of a Stater Bros store. The scope of work was to build-out offices for the expansion of the DPSS operations and included the relocation of the electric service.

Square Footage 80,000 s.f.

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.

Citrus Pump Station Office & Storage Building

Oltmans Construction Co. is a subcontractor under Ames Construction (GC). Our scope involves the construction of an office buiding and a storage building at the Citrus Pump Station for the Department of Water Resources.

Square Footage

6,000 s.f.

Department of Public Social Services (DPSS) – Moreno Valley

Construction of new single story 52,240 s.f. building for the Department of Public and Social Services in Moreno Valley. Tenant build-out includes: conference rooms, cubicle farms, restrooms, offices, lobby, and various work station rooms.

Square Footage

52,240 s.f.

2085 Rustin Ave. (Riverside Dept. of Mental Health)

Oltmans Construction provided design-build services for B.H. Properties, Property Owner. The project was the building rehab and tenant improvement of a Type III-B, 2-story, 163,000 s.f. office building for the County of Riverside, Department of Mental Health. Prior to build-out, the building was completely gutted on both floors. Our scope of work included the following building improvements:

  • Major additions of office and group rooms, lobbies, break-rooms, etc.
  • Construction of a wood framed 18,000 s.f. mezzanine structure in existing warehouse area, providing additional office and meeting areas above and below.
  • Significant additions and renovations of electrical/lighting systems including a 2500kW full building backup generator.
  • Upgrade of HVAC system with (4) 100 ton carrier package rooftop VAV units.
  • Replacement of all existing restroom fixtures with more water efficient fixtures.
  • Site work including: upgrade to drought-resistant landscape and drip irrigation, slope corrections, addition of walkways/stairs, exterior finishes and signage upgrades.

Prevailing Wage Requirements

Working with the County of Riverside, Oltmans Construction facilitated and managed the project’s overall prevailing wage requirements. The Oltmans’ staff documented all subcontractors’ certified payroll reports, which detailed who the employees were on-site, how many hours per day they worked and how much they were compensated. Through weekly certified payroll administration, Oltmans ensured that all subcontractors were properly paying prevailing wage rates according to California Prevailing Wage laws.

Square Footage 163,048 s.f.

Perris Valley Commuter Rail Extension

Oltmans Construction joint ventured with Ames Construction to complete four (4) rail stations and one (1) rail layover facility including all associated on and offsite work.


Construction of the Perris Valley Line (PVL), which extends Metrolink commuter rail service on the 91 Line, began in October 2013. Led by the Riverside County Transportation Commission (RCTC), the PVL is the first extension of Metrolink service since the Antelope Valley Line, which was built in 1994. The PVL continues rail service 24 miles from the downtown Riverside station to south Perris, with four new stations constructed at Riverside Hunter Park, Moreno Valley/March Field, Downtown Perris and South Perris. The project also includes construction and rehabilitation of railroad tracks, upgrades at-grade crossings and improvements of existing tracks. The PVL provides greater access to Southern California’s commuter rail network for residents in Menifee, Murrieta, Temecula, San Jacinto, Hemet, Lake Elsinore and Wildomar.

Square Footage

Site Area 28.89 acres or 1,258,599 s.f.

Building Area 592,810 s.f.

Child Support Services Department- Pomona

The project was the tenant improvement of a 2-story, 50,000 s.f. Class-A Office Building for the Child Support Services Department. Prior to construction, the building was completely gutted on both floors. Our scope of work included the following building improvements:

  • Mechanical, electrical, sprinkler, plumbing, life safety, air conditioning, ventilation and structural systems within the Building.
  • Tenant ceiling and lighting
  • Floor finishes
  • Interior partitions, doors and hardware within the Premises
  • Reception area/waiting area
  • Men’s and women’s restrooms
  • Conference rooms/training rooms, audit rooms, work areas/manager offices
  • Mechanical equipment room
  • Two (2) kitchens, including finishes

Square Footage

50,000 s.f.

Department of Public Social Services (DPSS) – PERRIS

The new, single story, 50,000 s.f. concrete tilt-up facility for the County of Riverside’s Department of Public Social Services was completed under an Integrated Project Delivery (IPD) approach which focused on a collaborative team effort to minimize cost and schedule risk. Oltmans provided design/build services and worked alongside the Owner/Developer, Architect, County of Riverside, Economic Development Agency, and the Department of Public Social Services to successfully complete a project that met all vested parties’ goals and needs. The project enabled the County of Riverside to consolidate three (3) of their offices into one (1) all-inclusive Regional Facility, which presently accommodates 190 employees and services approximately 2,000 individuals daily with financial assistance, employment as well as food and shelter needs.

The building’s exterior featured a terra-cotta canopy, stone facade columns, and glass/glazing. Full tenant improvement work included the build-out of the following: a large waiting room, classrooms, interview booths, private interview rooms, five (5) conference rooms, meeting rooms, computer rooms, kitchen/breakrooms, women’s and men’s restrooms and offices/cubicle area as well as an Information Technology room with a redundant air conditioning system and a double inner lock fire sprinkler system. Oltmans completed all onsite and offsite work including a 280-car parking lot, fencing, landscaping, new traffic signals, new median, street improvements, and new storm drain installation.

Square Footage

51,992 s.f.

Fire Station 51

Winner of the prestigious Gold Nugget Award 2001, Best Public/Private Special Use Facility

This fire station houses one truck company of four firefighters, one engine company of three firefighters, and two medics. The project included the station, cafeteria, bunk house and all the required F.F. & E.

Square Footage

20,000 s.f.

College of the Desert - Solar Carport

College of the Desert – Solar Carport

This project consists of the construction of 27 elevated photovoltaic array carports at an existing parking lot.

Total System Summary

  • (8844) SunPower 435W Modules
  • 3.8 MW
  • 6 Modules/String
  • 1474 Strings

Oltmans provided general contracting services and self-performed the concrete work for caissons designed for the carport structure. As General Contractor, we provided project management, site supervision, safety, and material procurement.

Stanford Linear Accelorator(SLAC) B40 Renovation Project

Stanford Linear Accelorator (SLAC) National Accelerator Laboratory is one of ten Department of Energy’s (DOE) Office of Science laboratories and is operated by Stanford University on behalf of the DOE.

The project is a joint venture between Oltmans Construction Co. and Halbert Construction with Oltmans providing project management support and Halbert providing the field supervision. The scope of work consists of the demolition, renovation and addition, as well as the tenant improvement of the 3-story laboratory and office building. This project is LEED Gold and features 18,000 s.f. of newly renovated laboratory and office space as well as improvements to the Laser/MBE Lab, Synthesis Lab, Measurement Lab, Energy Storage Lab, UHV Lab and associated support rooms, common space and restrooms. Aside from the typical lab casework, air handling units and fume hood improvements, the team installed advanced process piping (UN2, CDA), a laser safety system, and a specialized Acoustic Chamber. One adjacent building is retrofitted into a training center which includes classrooms, common space and retrofitted with advanced AV systems.

Square Footage

18,000 s.f.

Metrolink Station Solar PV Carport & Electrical Improvements

ASCE Winner for Outstanding Sustainability Project Over $10M

The City of Industry solar carport and electrical vehicle charging station project is the largest of its kind in Southern California.

The Metrolink Public Transportation Station Solar Carport and Electrical Vehicle Charging Station is the largest of its kind in southern California. The carport provides shaded area for 940 car stalls and generates 2.1 (megawatts) MW per hour of electric power directly to the grid which powers the 64 electrical vehicle charging stations also installed on the site. This impressive project consisted of 8,372 solar panels including 196 LED carport lights using approximately 10 miles of conduit and 44 miles of wiring to complete the project. The carport structure itself is firmly supported on 190 concrete piles ranging in depths of 15 feet to 30 feet. The power system is capable of generating 2,900MWh per year. The seven month project was done in two phases, thereby minimizing any inconvenience to the daily heavy traffic of Metrolink customers.


940 Car Stalls; 2.1 MW