In-Situ Inc Articles

  • Surveying Company Meets New Challenges with In-Situ Equipment

    Overview A Pacific Northwest surveying firm successfully expanded its capabilities using the Aqua TROLL 600 to monitor water quality for a large industrial customer. Challenge Statewide Land Surveying Inc. was looking for opportunities to take their surveying expertise into environmental applications. So, when a large industrial facility in Oregon asked them to conduct bathymetric surveys and ...


    By In-Situ, Inc.

  • In-Situ® Rugged Dissolved Oxygen (RDO®) Sensors Use the Latest Advancements in Optical Measurement Technology

    Dissolved oxygen (DO) is one of the most important parameters monitored when evaluating water quality, aquatic biology, and other environmental and industrial processes. The In-Situ Rugged Dissolved Oxygen (RDO) Sensor measures DO using the latest advancements in optical measurement technology. Water quality professionals will benefit from In-Situ Inc.'s investment in new product development. By ...


    By In-Situ, Inc.

  • Dynamics of Chromosome Spreading

    Consistency of optimum chromosome spreading during harvest of cytogenetic specimens remains a major concern. We have tested the idea that a precise control of the drying rate (the time with which metaphase cells dry), as fixed cell suspension is placed on a slide or an in situ culture in last fixation, may be the answer. Amniocyte and lymphocyte cultures were allowed to dry at defined ...


    By Thermotron Industries

  • A 2006 GLOBE award winner

    The GLOBE Corporate Award for Technology Innovation and Application is presented is to a company that has demonstrated outstanding technical ingenuity in the development and/or application of an innovative technology or process with a significant environmental application. This year’s winner, Ivey International Inc., has developed a surfactant remediation technology (Ivey-sol®) solution that has ...


    By Ivey International Inc.

  • In-Situ® Optical RDO® Methods for Dissolved Oxygen Measurements Outperform Traditional Methods

    ABSTRACT Three methods are generally used to measure dissolved oxygen (DO) in surface waters: Winkler titration, membrane-covered electrochemical sensors (polarographic or galvanic cell), and luminescent-based sensors. Optical (luminescent) technology for measuring DO levels in water has quickly become a well-accepted method due to many advantages over membrane-based sensors, and its close ...


    By In-Situ, Inc.

  • Fall 2009 IET Newsletter

    Innovative Environmental Technologies, Inc"s Fall 2009 Newsletter featuring chlorinated and petroleum contaminated site remediation.   Visit www.iet-inc.net for more newsletters, case studies, and technical bulletins concerning in-situ remedial technologies. ...

  • Former Dry Cleaning Site Contaminated with PCE - Case Study

    In-Situ® Inc. TROLL® 9500 Multiparameter Sonde helps resolve treatment challenges and saves $200,000 in drilling, reagents, and consulting. A former dry-cleaning site in the Pacific Northwest, Ultra Custom Care Cleaners, was found to be contaminated with PCE (perchloroethylene). According to the U.S. Geological Survey (USGS), PCE was widely used in the dry cleaning of fabrics since the ...


    By In-Situ, Inc.

  • Persulfate-peroxide-ZVI technical bulletin

    Traditionally, oxidation processes utilize oxidizers, which require no activation; peroxide, permanganate. Persulfate and ozone, or oxidants which require activation; Fenton’s Process and activated persulfate. The advantage of activated processes is the evolution of free radicals, which offer higher oxidation capabilities and a broader spectrum of applicable targeted compounds. The disadvantages ...

  • The Importance of Dynamic Density Compensation in Water Level Monitoring

    OBTAINING SUPERIOR WATER LEVEL ACCURACY IN COASTAL ENVIRONMENTS In-Situ Inc. water level instruments measure the sum of all pressures (atmospheric and hydrostatic) exerted on a pressure transducer and use that data to calculate water levels. Water density contributes to the total hydrostatic pressure. Saltwater has a higher specific gravity than fresh water. A standard column of saltwater ...


    By In-Situ, Inc.

  • Ethanol Production Plant Monitors Impacts to Water Supply and Stays in Compliance

    Application Under current ethanol plant configurations, water use for ethanol production ranges from 4.0 to 6.8 gallons of water required per gallon of ethanol produced. With the average new plant producing 120 million gallons of ethanol per year, water yields in excess of 1,000 gallons per minute are required; therefore adequate water supply is essential to the operation of an ethanol ...


    By In-Situ, Inc.

  • Electrokinetic Separation

    Introduction The principle of electrokinetic remediation relies upon application of a low-intensity direct current through the soil between ceramic electrodes that are divided into a cathode array and an anode array. This mobilizes charged species, causing ions and water to move toward the electrodes. Metal ions, ammonium ions, and positively charged organic compounds move toward the cathode. ...

  • Tidally-Influenced New Orleans Canal Network Benefits from Accurate Water Level Data

    Application The Southern Louisiana Hurricane Protection System includes a network of levees, floodwalls, floodgates, and pumping stations in New Orleans, Louisiana. This network includes monitoring equipment designed to improve management of water levels throughout the system. Water level monitoring helps synchronize pumping and assures that all elements of the water level control system are ...


    By In-Situ, Inc.

  • The no. 1 choice for improving the performance of soil and groundwater remediation

    Adsorption of Contamination The number one challenge associated with most site remediation designs and methodologies is that 90% to 95% of all environmental contaminants; including hydrocarbons (LNAPL), chlorinates (DNAPL), and heavy metals; are present in a sorbed (i.e., absorbed or adsorbed) phase onto soil and bedrock surfaces within both saturated and unsaturated zones. As such, the absorbed ...


    By Ivey International Inc.

  • Trap & Treat® BOS 200® Technical Bulletin for L.U.S.T. State Regulators

    Given exponential growth in the number of Trap & Treat® BOS 200® projects across the country, Remediation Products, Inc. (RPI) would like to pause a moment and share some very important information with regulators. While BOS 200® is arguably one of the fastest growing and most successful remediation products available, the role of remediation-based supplemental sampling and ...

  • World’s deepest DNAPL remediation confidential site, Los Angeles, California

    TRS Group, Inc (TRS) provided Electrical Resistance Heating (ERH) for the remediation of DNAPL at 130-feet belowground surface (ft bgs) at a confidential site located in Los Angeles, CA. This is the world’s deepest remediation of DNAPL using an in situ thermal technology. Total volatile organic compounds (VOCs) of concern include etrachloroethene (PCE), 1,1,1-trichloroethane (TCA), ...


    By TRS Group, Inc.

  • Comparing Performance of Dissolved Oxygen Probes and Examining Payback of the RDO PRO Probe Used to Monitor Aeration Basins

    Introduction Wastewater Treatment Plants (WWTPs) can use reliable dissolved oxygen (DO) data to improve operations, especially with continuous DO monitoring and realtime data acquisition. When DO probes and controllers are connected to blower controls through a SCADA system, the Publicly Owned Treatment Works (POTW) or WWTP will be able to: Optimize sewage treatment ...


    By In-Situ, Inc.

  • Landfill slope stability

    Birdsall Engineering, Inc. has recently undertaken a landfill slope stability project using SVDynamic. This project dealt with a difficult and unconventional problem that SVDynamic was able to solve quickly and easily. The below quote further details this modeling project: "In order to optimize airvolume at an existing landfill we had to evaluate the slope stability of the piggy-backed waste body ...


    By SoilVision Systems Ltd.

  • Remediation of silty-clay hydrocarbon contaminated site using Ivey-sol selective phase transfer technology

    Earlier this year, Ivey International Inc. secured its first remediation project in Alberta using its Ivey-sol Selective Phase Transfer Technology (SPTT). This patented technology is being used to treat extensive soil and groundwater contamination at an active service station in Red Deer, Alberta. With a residential area nearby, the environmental sensitivity is relatively high. Unfortunately, ...


    By Ivey International Inc.

  • Largest River Island in the United States Manages Flood Control with In-Situ Inc. System

    Introduction Some of the most fertile agricultural lands in the United States are found in the Willamette Valley of Oregon. Sauvie Island, the largest river island in the United States, lies approximately 10 miles (16 km) northwest of downtown Portland. The Columbia River flows along the east, the Multnomah Channel lies to the west, and the Willamette River to the south.The 26,000-acre {105 ...


    By In-Situ, Inc.

  • The “Straight Skinny” on bentonite-based drilling muds & their standard practice use in the horizontal remediation well industry

    Let’s make our point up front: 1) bentonite-based drilling fluid is NOT bad for horizontal remediation well (HRW) projects; 2) it does not damage the formation; 3) it is a naturally occurring clay material that is mined; and 4) it does flush easily/adequately during well development. Most remediation professionals have designed and/or installed vertical wells at one time or another ...

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