Soils Southwest, Inc.

Soils Southwest, Inc.

Our Services

Geotechnical Engineering

Phase I & Phase II Environmental Site Assessments (ESA)

Construction Inspection & Material Services


Technical Support Group:
Soils Southwest's technical support group consists of industry best engineers and trained technicians. The technical support group consists of: Professional Engineers Engineering Geologists ICBO Inspectors Field Technicians Laboratory Technicians

In-House Facilities:
Soils Southwest maintains a full service geotechnical facility. Our laboratory is equipped with a full array of soils and materials testing equipment. The laboratory also includes nuclear density gauges and concrete compression testing.   

About Soils Southwest, Inc.

Founded in 1984, Soils Southwest, Inc. is a privately owned soils engineering consultancy. The company is headquartered in the Inland Empire city of Colton, California.

Soils Southwest, Inc. has been providing soils engineering services throughout Southern California, with a strategic focus on Los Angeles and San Bernardino counties. Soils Southwest also serves the states of Arizona and Oregon.

Soils Southwest, Inc. provides primary services including: 

  • Geotechnical Engineering 
  • Phase I & Phase II Environmental Site Assessments (ESA) 
  • Construction Inspections
  • Material Services  

Our History

Soils Southwest, Inc. was founded by Moloy Gupta in 1984.

The company has designed foundations for everything including homes, amusement parks, energy producing windmills, casinos, University of California buildings, and some of the nations largest car dealerships.

Moloy Gupta holds P.E. licenses in California, Oregon, and Arizona.

Moloy earned his undergraduate engineering degree at Jaduvpur University in Calcutta, India. He holds graduate degrees in engineering from West Virginia University and the University of California, Los Angeles.  

In 2013, Moloy was honored for his engineering achievement by being inducted into the West Virginia Academy of Civil Engineers. He has also been recognized for engineering excellence by San Bernardino County; and for his generosity by the Habitat for Humanity.   

Contact Us

We are located 60 miles east of Los Angeles, in the City of Colton. Our office is just south of the 10/215 freeway interchange.   

 Take the Washington and Mt. Vernon Ave. exit from the 215 freeway. Drive North on Mt. Vernon to Cooley Drive. Make a right on Cooley Drive. Then turn left on Via Lata.  We are located in the third parking lot on your left.

Soils Southwest, Inc.

897 Via Lata Suite N Colton, CA 92324