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Report Created 06/27/2025 at 6:18 AM
PLANHOLDERS LIST
SOLICITATION 42219: Preliminary Engineering and Design Services for the Ortega Siding Project
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Prime Contractors Planning to ParticipateNeeded ServicesContact Instructions
Company Name: SCS ENGINEERS
Contact: DEPI VIDYARTHI
Address: 3900 KILROY AIRPORT WAY, SUITE 100, LONG BEACH, CA 908066816
Phone: (800) 7674727
Email: DVIDYARTHI@SCSENGINEERS.COM
Not looking for a subcontractor 
Company Name: KIMLEY-HORN AND ASSOCIATES, INC
Contact: MARKETING DEPARTMENT
Address: 1100 W. TOWN AND COUNTRY ROAD, SUITE 700, ORANGE, CA 92868
Phone: (714) 9391030
Email: CA.MARKETING@KIMLEY-HORN.COM
Not looking for a subcontractor 
Company Name: AKKODIS
Contact: MARGARET TORRES
Address: 2302 MARTIN, SUITE 150, IRVINE, CA 92612
Phone: (951) 7606465
Email: MARGARET.TORRES@AKKODISGROUP.COM
Not looking for a subcontractor 
Company Name: VRPA TECHNOLOGIES, INC.
Contact: DENA GRAHAM
Address: 9747 BUSINESSPARK AVENUE, STE. 210, SAN DIEGO, CA 92131
Phone: (858) 5661766
Email: DGRAHAM@VRPATECHNOLOGIES.COM
Not looking for a subcontractor 
Company Name: MILLENNIUM CONSULTING ASSOCIATES
Contact: JACK MCCUBBIN
Address: 4683 CHABOT DRIVE, SUITE 380, PLEASANTON, CA 94588
Phone: (925) 8086700
Email: JMCCUBBIN@MECAENVIRO.COM
Not looking for a subcontractor 
Company Name: T.Y. LIN INTERNATIONAL
Contact: JASMINE LEWIS
Address: 20 PACIFICA, SUITE 350, IRVINE, CA 92618
Phone: (619) 6921920
Email: AMER-MARKETING-SOUTHWEST@TYLIN.COM
Not looking for a subcontractor 
Company Name: URBAN ENGINEERS, INC.
Contact: ROBERT TUTTLE
Address: 530 WALNUT STREET, 14TH FLOOR, PHILADELPHIA, PA 19106
Phone: (215) 9228080
Email: RTUTTLE@URBANENGINEERS.COM
Not looking for a subcontractor 
Company Name: ALISTO ENGINEERING GROUP, INC.
Contact: AL SEVILLA
Address: 2737 N. MAIN ST., SUITE 100, WALNUT CREEK, CA 94597
Phone: (925) 2795000
Email: ALISTORFP@ALISTO.COM
Not looking for a subcontractor 
Company Name: MARK THOMAS & COMPANY, INC.
Contact: ALLISON KOOIMAN
Address: 3200 EL CAMINO REAL, STE 290, IRVINE, CA 92602
Phone: (949) 4779000
Email: AKOOIMAN@MARKTHOMAS.COM
Not looking for a subcontractor 
Company Name: CAPITOL GCS
Contact: TOM TALARICO
Address: CAPITOL GCS, INC., 4199 CAMPUS DR. SUITE 550, IRVINE, CA 92612
Phone: (949) 7252208
Email: TTALARICO@CAPGCS.COM
Not looking for a subcontractor 
Company Name: RSE CORPORATION
Contact: MELISSA CHAN
Address: 1820 GATEWAY DRIVE, SUITE 200, SAN MATEO, CA 94404
Phone: (650) 7810345
Email: MECHAN@RSECORP.COM
Not looking for a subcontractor 
Company Name: ZEPHYR RAIL
Contact: MARC CANAS
Address: 725 TOWN AND COUNTRY RD, SUITE 550, ORANGE, CA 92868
Phone: (714) 8356355
Email: BIDS@ZUIRAIL.COM
Not looking for a subcontractor 
Company Name: D R CONSULTANTS & DESIGNERS, INC.
Contact: MICHAEL GROSSMAN
Address: 915 WILSHIRE BOULEVARD, 7TH FLOOR, LOS ANGELES, CA 90017
Phone: (213) 2350930
Email: INFO@DRCDINC.COM
Geotechnical, Traffic EngineeringEmail info@drcdinc.com
Company Name: THE LABOR COMPLIANCE MANAGERS
Contact: LINDLEY ROBERTSON
Address: 2909 NIEMAN BOULEVARD #111, SUITE 620, SAN JOSE, CA 95148
Phone: (408) 5167238
Email: LIN.TLCM@GMAIL.COM
Not looking for a subcontractor 
Company Name: HUITT-ZOLLARS, INC.
Contact: KEVIN CARTER
Address: 2603 MAIN STREET, SUITE 400, IRVINE, CA 92614
Phone: (805) 4181802
Email: KCARTER@HUITT-ZOLLARS.COM
Not looking for a subcontractor 
Company Name: TDG ENGINEERING, INC.
Contact: JENNIFER TOOLE
Address: 527 W. 7TH STREET, SUITE 701, LOS ANGELES, CA 90014
Phone: (301) 9271900
Email: CONTRACTS@TOOLEDESIGN.COM
Not looking for a subcontractor 
Subcontractors Planning to ParticipateServices ProvidedContact Instructions
Company Name: HDR ENGINEERING, INC.
Contact: LARA PAULINO
Address: 3230 EL CAMINO REAL, SUITE 200, IRVINE, CA 92602
Phone: (714) 7302300
Email: SOCALTBGMKTG@HDRINC.COM
engineering.
Company Name: EARTH MECHANICS INC
Contact: ALAHESH THURAIRAJAH
Address: 17800 NEWHOPE ST # B, FOUNTAIN VALLEY, CA 92708
Phone: (714) 7513826
Email: A.THURAIRAJAH@EARTHMECH.COM
Geotechnical Engineering & GeologyAlahesh Thurairajah, 714-845-7704
Company Name: AECOM TECHNICAL SERVICES
Contact: MAY LOW
Address: 999 TOWN & COUNTRY ROAD, ORANGE, CA 92868
Phone: (714) 5672501
Email: MAY.LOW@AECOM.COM
..
Company Name: COAST SURVEYING INC
Contact: RUEL DELCASTILLO
Address: 15031 PARKWAY LOOP, SUITE B, TUSTIN, CA 927806527
Phone: (714) 9186266
Email: RUEL.DELCASTILLO@COASTSURVEY.COM
Surveying & MappingRuel.delcastillo@coastsurvey.com (714) 918-6266
Company Name: TOWILL, INC.
Contact: SHEILA HIGGINS
Address: 500 SOUTH MAIN STREET, SUITE 540, ORANGE, CA 92868
Phone: (925) 6826976
Email: SHEILA.HIGGINS@TOWILL.COM
land surveybd@towill.com
Company Name: LIN CONSULTING, INC.
Contact: DENWUN LIN
Address: 21660 E. COPLEY DRIVE, SUITE 270, DIAMOND BAR, CA 91768
Phone: (909) 3966850
Email: MARKETING@LINCONSULTING.COM
traffic engineering servicesmarketing@linconsulting.com
Company Name: HELIX ENVIRONMENTAL PLANNING, INC.
Contact: TIFFANY THOMSON
Address: 7578 EL CAJON BOULEVARD, LA MESA, CA 919422798
Phone: (619) 4621515
Email: TIFFANYT@HELIXEPI.COM
Environmental consultingtiffanyt@helixepi.com
Company Name: AURIGA CORPORATION
Contact: SEON KIM
Address: 890 HILLVIEW COURT, SUITE 130, MILPITAS, CA 95035
Phone: (408) 9465400
Email: SKIM@AURIGACORP.COM
Electrical Engineering, Signal and communications engineeringSeon Kim skim@aurigacorp.com 310/793-6548
Company Name: PACIFIC RAILWAY ENTERPRISES
Contact: JENNIFER SECCOMBE
Address: 3560 UNIVERSITY AVENUE, SUITE F, RIVERSIDE, CA 92501
Phone: (951) 7844630
Email: JASECCOMBE@PACRAIL.COM
Railroad Signal, Systems, and Communications Design and InspectionEric Roe Pacific Railway Enterprises, Inc. (DBE,SB) eroe@pacrail.com 951-966-3282
Company Name: VERDANTAS INC., FORMERLY LEIGHTON CONSULTING, INC.
Contact: DINA ROCHFORD
Address: 2600 MICHELSON DRIVE, SUITE 400, IRVINE, CA 92612
Phone: (949) 6814255
Email: PROPOSALS@VERDANTAS.COM
Geotechnical engineeringproposals@verdantas.com
Company Name: CHAUDHARY & ASSOCIATES (DBE)
Contact: ARVIN CHAUDHARY
Address: 2675 JUNIPERO AVE. , #600, SIGNAL HILL, CA 945587551
Phone: (714) 2299247
Email: ARVIN@CHAUDHARY.COM
Local area DBE firm with extensive rail experience providing Land Surveying, Right of Way Engineering, Lidar/BIM, SWPPP, and Civil Engineering Design SupportArvin Chaudhary arvin@chaudhary.com 714-229-9247
Company Name: RINCON CONSULTANTS, INC.
Contact: JOHN DREHER
Address: 180 N ASHWOOD AVE, VENTURA, CA 93003
Phone: (805) 6444455
Email: INFO@RINCONCONSULTANTS.COM
EnvironmentalRincon
Company Name: SHANNON & WILSON, INC.
Contact: MELINDA WEBB
Address: 706 WEST BROADWAY, SUITE 201, GLENDALE, CA 91204
Phone: (206) 6956752
Email:
Geotechnical engineeringmelinda.webb@shanwil.com
Company Name: ENGINEERING DESIGN CONSULTANTS, INC.
Contact: BOBBY JOHNSON
Address: 3911 N CORDOBA AVE, B, B, SPRING VALLEY, CA 91977
Phone: (619) 6601355
Email: ADMIN@ENDECONINC.COM
ENDECON is a professional dry utility consulting engineering and facility locating firm with over 50 years of experience in the San Diego County and across the United States . We are certified as a SBE, DBE and MBE firm. In addition to providing Design and coordinating dry utility systems we have provided Potholing and dry utility base plan services on many projects for the City and County of San Diego.email Bobby Jhonson at: admin@endeconinc.com or call: (619) 660 1355
Company Name: NEW YORK GEOMATICS
Contact: SEAN FITZPATRICK
Address: 37-24 24TH STREET, SUITE 138, LONG ISLAND CITY, NY 11101
Phone: (718) 3619716
Email: SEANFITZPATRICK@NEWYORKGEOMATICS.COM
Land Surveyingemail: seanfitzpatrick@newyorkgeomatics.com
Company Name: NOVA SERVICES, INC.
Contact: BLAKE BARNETT
Address: 4373 VIEWRIDGE AVENUE SUITE B, SAN DIEGO , CA 92123
Phone: (858) 7766071
Email: BBARNETT@USA-NOVA.COM
geotechncial engineering, materials testing, special inspectionbbarnett@usa-nova.com
Company Name: PROGRESS RAIL SERVICES, A CATERPILLAR COMPANY
Contact: STEVE BRIDGES
Address: 3801 SOUTH SELSA ROAD, INDEPENDENCE, MO 64057
Phone: (657) 6605446
Email: SWBRIDGES@PROGRESSRAIL.COM
Train control, track and structuresswbridges@progressrail.com
Company Name: PARIKH CONSULTANTS, INC.
Contact: RENE RAMSAY
Address: 1497 N MILPITAS BLVD, MILPITAS, CA 95035
Phone: (408) 4529000
Email: RRAMSAY@PARIKHNET.COM
Geotechnicalrramsay@parikhnet.com
Company Name: REDWOOD RESOURCES
Contact: SCHENAE ROURK
Address: 4712 ADMIRALTY WAY UNIT 633, MARINA DEL REY, CA 90230
Phone: (510) 5160349
Email: OUTREACH@REDWOODRESOURCES.NET
engineering support.
Company Name: ABURTO TRANSIT CONSULTING LLC
Contact: ERIK ABURTO
Address: 21422 DAHLIA COURT, TRABUCO CANYON, CA 92679
Phone: (562) 8105220
Email: ABURTOTRANSITCONSULTING@OUTLOOK.COM
signal and train controlemail
Company Name: SHERWOOD DESIGN ENGINEERS
Contact: VICKI MILLER
Address: 706 S. HILL STREET, 11TH FLOOR, LOS ANGELES, CA 90014
Phone: (831) 4269054
Email: VMILLER@SHERWOODENGINEERS.COM
Civil Engineering designrcooper@sherwoodengineers.com
Company Name: PEC WATER INC.
Contact: HAMED HAKIMELAHI
Address: 315 MONTGOMERY ST. #915, SAN FRANCISCO, CA 94104
Phone: (562) 3330422
Email: HAMED@PECWATER.COM
Water Resources Engineering (Drainage, H&H)Hamed Hakimelahi PEC Water Inc- DBE Certified www.PECwater.com Hamed@PECwater.com 562-333-0422
Company Name: FRONTIER ENGINEERING GROUP
Contact: KHALED ALLAM
Address: 2111 BUSINESS CENTER DR., , SUITE 200, IRVINE, CA 92612
Phone: (949) 9811019
Email: KALLAM@FRONTIERECMG.COM
Structures Assessment, Design and technical reports, Cost EstimatingKhaled Allam, Ph.D., S.E. (949) 981-1019
Company Name: EXODIGO
Contact: EMMA TROXLER
Address: 2261 MARKET ST. STE 22373 , SAN FRANCISCO, CA 94114
Phone: (704) 8779219
Email: EMMA.TROXLER@EXODIGO.AI
Subsurface utility engineering - underground utility mapping, QLD-QLA mapsEmail Marla Westervelt: marla.westervelt@exodigo.ai and Emma Troxler: emma.troxler@exodigo.ai
Company Name: TURNER & TOWNSEND AMCL INC
Contact: LOREN CONTI
Address: 285 MADISON AVE, 22ND FL, NEW YORK, NY 10017
Phone: (212) 3707319
Email: LOREN.CONTI@AMCL.COM
asset managementloren.conti@amcl.com
Company Name: SAMA CONSTRUCTION SERVICES CORPORATION
Contact: RYAN ESPOY
Address: 4940 EAST CORRINE DRIVE, SCOTTSDALE, AZ 85254
Phone: (720) 8783544
Email: RESPOY@SAMA-CS.COM
CA&IRyan Espoy respoy@sama-cs.com
Company Name: ATLAS TECHNICAL CONSULTANTS LLC
Contact: DAN MARINO
Address: , ,
Phone: (877) 2154321
Email: DANIEL.MARINO@ONEATLAS.COM
Geotechnical engineering, environmental, geophysical, subsurface utility locating/engineering.Daniel.Marino@oneatlas.com
 
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