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    1 Laboratories

    5.0 (1 review)
    Open 8:00 am - 5:30 pm

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    Recommended Reviews - 1 Laboratories

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    2 years ago

    The lab was very helpful, they picked up samples from my project site, and the data was delivered on time and for rush analyses.

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    Marshall GeoScience - New grading project with a LID stormwater infiltration system

    Marshall GeoScience

    (5 reviews)

    We recently hired Marshall for a hillside property survey in Glendale and he exceeded every…read moreexpectation. He was incredibly resourceful; researching crucial tract grading, soil, structural and as-built plan documents. He promptly met me on-site for a visual assessment to guide the evaluation. Recognizing the potential risks, he did an incredible job helping us focus on structural integrity. He was highly responsive and walked me through every step of the process. He gave us the vital technical breakdown and escrow evaluation we needed to make our decision. Hire them--you won't regret it!

    Outstanding responsiveness and professionalism. I reached out to Marshall GeoScience through Yelp…read more Marshall (the principal engineer) replied quickly--even continuing the conversation well after business hours and offering to jump on a call. I wasn't exactly sure what I needed at first, and he was incredibly patient while I tried to explain the situation. Rather than guessing, he took the time to understand my goals, clarified that a firm estimate would require a defined scope of work, and laid out what that scope should look like so I could move forward confidently. What stood out most was his clear communication, transparency, and willingness to help without any pressure. I'd contacted a few other firms before him and had mixed results. Marshall was by far the most responsive and helpful. If you need a geotechnical engineer who is prompt, thoughtful, and genuinely focused on setting you up for success, I highly recommend Marshall GeoScience.

    1 Laboratories - environmentaltesting - Updated September 2026

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