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Aug
1

H2A’s Mike Hawthorne to speak at the 2013 Texas Environmental Superconference

written by Andrea

Mike Hawthorne, of H2A Environmental, Ltd., will be speaking on “The Use of Modeling in Site Remediation” at the 25th edition of the annual Texas Environmental Superconference, Texas’s award-winning environmental conference, which will be held on Thursday and Friday — August 1-2, 2013– in Austin at the Four Seasons Hotel.  Co-presented by the State Bar […]

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Jun
7

H2A Welcomes Charles D. Stone to Our Team

written by Andrea

H2A Environmental, Ltd. is very pleased to announce that Charles D. Stone, P.G., P.E. has joined our team to further enhance the strategic scientific solutions we provide our clients.  Charles will be opening an Austin, Texas office for H2A, and he will provide principal level technical expertise to a wide variety of technical and regulatory […]

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Aug
15

H2A is Using LNAPL Transmissivity to Make MDPE More Efficient and Cost Effective

written by Shannon

H2A recently completed an evaluation of LNAPL transmissivity (Tn) at a major international airport in Texas.  The results are being used to further enhance the existing mobile dual-phase extraction (MDPE) remediation strategy for the site by focusing efforts on wells exhibiting the highest LNAPL transmissivity.  By doing so, H2A has realized increases in product recovery […]

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Jun
16

H2A Performs 12-Day MDPE Event in Angleton, Texas

written by Shannon

H2A is currently performing a 12-day, mobile dual-phase extraction (MDPE) event at a former petroleum storage tank site located within TxDOT right-of-way in Angleton, Texas (the Site).  This is the latest of seven MDPE events performed by H2A at the Site over the past several years.  During a 12-day event performed in March of this […]

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May
6

LNAPL Remediation Drivers

written by Andrea

One way to look at light non-aqueous phase liquid (LNAPL) drivers for remediation is to break them down into: (1) physical science issues and (2) human science issues.  Physical science drivers include saturation and composition risks.  Saturation risks are primarily related to migration of LNAPL, if the LNAPL mass present is great enough for migration […]

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Apr
21

Employee Spotlight – Shannon S. Walker, PE

written by Andrea

Shannon has been a Senior Remediation Engineer at H2A for almost four years.  She holds both a MS and BS in Chemical Engineering, and a BS in Civil Engineering, from West Virginia University in Morgantown, West Virginia.  She has worked in environmental consulting for over ten years, specializing in site remediation and regulatory compliance. Q: […]

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Apr
7

H2A Obtains TCEQ Closure at a West Texas Industrial Plant

written by Andrea

H2A recently obtained closure from the Texas Commission on Environmental Quality (TCEQ) for a waste management unit located at an industrial plant in west Texas.  The unit, which consisted of a grey water pond used to collect discharge water from employee locker room sinks and showers, was regulated under the Resource Conservation and Recovery Act […]

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Mar
11

Advanced LNAPL Workshop to be Held at AEHS Conference

written by Andrea

A Workshop on Advances in LNAPL Site Management will be held on Monday, March 14, 2011, as part of the AEHS Foundation’s Soil, Water, Energy, and Air Conference at the Mission Valley Marriott in San Diego, California.  Mark Adamski of BP is the Moderator for the Workshop, and a distinguished panel of experts will be […]

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Mar
4

H2A Presents “An Exploration of LNAPL Transmissivity” to the USEPA

written by Andrea

H2A recently presented an in-depth training webinar to the USEPA titled “An Exploration of LNAPL Transmissivity.”  H2A’s Mike Hawthorne identified LNAPL transmissivity as an improved metric (versus LNAPL thickness or recovery data) with respect to LNAPL mobility, recoverability, and remediation operational progress.  Five techniques used to measure LNAPL transmissivity were reviewed in detail and the […]

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Mar
1

H2A Presents LNAPL Webinars to the Missouri DNR

written by Shannon

H2A’s Mike Hawthorne recently presented two, back to back, one-hour training webinars to the Missouri Department of Natural Resources. The first explored basic tenets of LNAPL science, including multiphase saturation distribution concepts and the benefits of multiphase extraction for both compositional change and saturation reduction in LNAPL remediation. The second webinar discussed LNAPL transmissivity as […]

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1862 Keller Parkway
Keller, TX 76248

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