conductivity recorder Articles

  • Conducting The Phase I Assessment - Records Review

     This is the second in a series of five articles relating to conducting Phase I Environmental Site assessments. Each article attempts to give the reader a thorough understanding of a specific aspect of the Phase I process and Clayton’s commitment to meeting or exceeding the requirements of ASTM Standard E 1527 Standard Practice for Environmental Site Assessments: Phase I Environmental Site ...


  • Get more out of Water Resources Engineering Models

    The effort required to develop water resources engineering models can be significant. But once developed, in many instances the models are only evaluated for a limited, or a single set of conditions. The results and predictions obtained from these evaluations are the ones used in design, presented in reports and conveyed to decision makers and the public. This approach might serve ...


    By XP Solutions

  • Are my STS’s recordable?

    Although we often take it for granted, hearing is one of our most important senses. During infancy and childhood, hearing is vital for the normal development of speech and language. Hearing remains equally important throughout life as it enables us to communicate with friends and colleagues, and allows us to stay connected to and be aware of our environment. The ear is a remarkable structure, ...


    By The EI Group, Inc.

  • Compliance Corner - Record retention

    In the course of a dangerous good shipment, a shipper’s declaration is created and needs to be stored as it contains information used to protect the safety of individuals, businesses and the environment. This shipping paper must be maintained for a given period of time depending on the method of shipment. There are also similar record retention requirements for dangerous good training ...


    By 3E Company

  • Conducting The Phase I Site Assessment - Historical Use

    This is the first in a series of five articles relating to conducting Phase I Environmental Site Assessments. Each article will attempt to give the reader a thorough understanding of a specific aspect of the Phase I process and Clayton's commitment to exceeding the requirements of ASTM Standard E 1527 Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment ...


  • Quality Assurance Guidance for Conducting Brownfields Site Assessments

    Executive Summary Many sites across the nation once used for industrial and commercial purposes are now abandoned or under-used. Some of these sites — often referred to as “Brownfields”— are contaminated; others are perceived or suspected to be contaminated. In 1993, the Environmental Protection Agency (EPA) created the Brownfields Economic Redevelopment Initiative to empower States, Tribes, ...

  • Underwater Bridge Inspections – Drones Conducting Remote Evaluations

    Deep Trekker Remotely Operated Vehicles (ROV), or underwater drones, are establishing themselves as the ideal tool for underwater bridge inspections. It goes without saying that the structural integrity of a bridge is extremely important; after all, you’re only either walking, driving, or riding a train across it. With the public safety in mind and to continue the flow of traffic, these ...


    By Deep Trekker Inc.

  • Use of Eight Well Purging and Sampling Record

    This article describes a groundwater well purging and sampling form that can be downloaded at our website. A click on the articles button will take you to a list of Monitoring Tips and Procedures articles, one of which is the sampling form. The form can be used to record  indicator parameters pH, conductivity, temperature, etc., taken during ...


    By RotaPump, Inc

  • The Thermal Probe—Measurement of the Thermal Conductivity and Drying Rate of Soil in the Field

    The thermal probe is a metal rod with an internal heating element and temperature sensor. In the field it is pushed into a predrilled hole in otherwise undisturbed soil, and the thermal properties of the soil are estimated from the temperatures recorded at intervals after a constant power is supplied to the heating element. The following are discussed in this paper: the theory behind the methods ...


    By ASTM International

  • Hydraulic conductivity of residual lateritic soil permeated with organic chemicals

    In this study, three lateritic soil samples compacted at 2% wet of optimum moisture content with British Standard Light (BSL) effort were permeated with acetone and ethanol over a range of concentrations (0, 25, 50, 75, 100%), while benzene and heptane were used at full strength. Hydraulic conductivity of specimens permeated with diluted solutions of acetone and ethanol ( ...


    By Inderscience Publishers

  • Joint estimation of hydraulic conductivities of two sand samples in a W-tube system with a bi-exponential response

    The motivation for this paper is the practical problem of interpreting bi-exponential rate-of-rise curves that are observed during many field piezometric tests. In the authors' previous study, a laboratory W-tube system of water flow through two samples of sand was introduced with an adequate mathematical model. The desired bi-exponential character of water flow was obtained by placing two ...


    By IWA Publishing

  • US red river army depot’s hazardous materials management system (HMMS) achieves stellar record with state agency

    The United States Army’s Red River Army Depot (RRAD), located in the northeast corner of Texas, is a 600,000 square foot production complex located on more than 18,000 acres of land among 1,400 buildings. It serves as an ammunition depot storage site and maintenance facility for the Bradley Fighting Vehicle, Multiple Launch Rocket System, and combat tactical wheeled vehicles. In addition, ...


    By IHS

  • Geophysical applications to solid waste analysis

    Abstract: Case studies of regional landfills show that electromagnetic geophysical methods can accurately and inexpensively define boundaries and thickness of waste. Degradation of putrescible solid waste generates conductive leachate that can be imaged with a frequency-domain terrain conductivity meter. Terrain conductivity measurements can be modified through a simple algorithm based upon ...


    By Geonics Limited

  • Mine remediation case study

    Bartow, Florida GeoView, Inc. performed a geophysical investigation across a 200 acre site in Polk County, Florida. It had been reported that clay slimes from former mining operations had been deposited on the site. The purpose of the investigation was to help determine the horizontal and vertical extent of the clay slimes. Due to the large size of the site and limited budget, the ...


    By GeoView, Inc.

  • Behavior of Flame Spread Downward over Thick Wood Sheets and Heat Transfer Analysis

    To investigate the flame spreading mechanism over charring materials under natural convection, wood sheets from 0.9 to 3 mm thickness have been chosen. The variation of mean flame spread velocity V with thickness  is measured. Typical flame shapes over the wood surfaces are recorded using CCD. The temperature fields in the gas phase are examined by a set of fine thermocouples. On the basis ...


    By SAGE Publications

  • Performance evaluation of exhaust air recirculation system of mixed mode solar dryer for drying of onion flakes

    This paper deals with the performance of mixed mode type solar dryer for drying onion flakes. During the experiments, no load and full load test were conducted to find out the effectiveness to the system with or without recirculation of exhaust air. The drying and thermal efficiencies and heat utilisation factors were recorded as 21%, 74% and 31% respectively, more compared to recirculation of ...


    By Inderscience Publishers

  • How to Survive An EPA Clean Air Act Title VI Refrigerant Regulations Compliance Inspection

    Part 1: Prior To An Inspection EPA fines and penalties for violations of Clean Air Act (CAA) ...


    By IHS

  • Impact of fertilizer plant effluent on water quality

    The impact of National Fertilizer Company of Nigeria outfall effluent on the physicochemistry and bacteriology of Okrika creek was investigated during the sampling period from May to December, 1998. The National Fertilizer Company of Nigeria outfall effluent, the Okrika creek water and the Ikpukulubie creek (control) water samples were collected. The physico-chemical parameters analyzed for all ...

  • Knowledge, attitudes and practices on use of Fossa Alternas and double vault urine diverting dry (DVUDD) latrines in Malawi

    Fossa Alternas and double vault urine diverting dry (DVUDD) latrines have been extensively promoted as ecological sanitation (EcoSan) latrine options in Malawi, but little is known about whether they are used properly. A qualitative study of EcoSan users was conducted in Blantyre and Chikwawa districts, Malawi. Data were collected using in-depth interviews (IDIs). Twenty-eight (28) and ...


    By IWA Publishing

  • The effectiveness of Hong Kong`s Construction Waste Disposal Charging Scheme

    The Hong Kong Government introduced the Construction Waste Disposal Charging Scheme in December 2005 to ensure that disposal of construction and demolition (C&D) waste is properly priced to reduce such waste. The charging scheme is not only intended to provide an economic incentive for contractors and developers to reduce waste but also to encourage reuse and recycling of waste material ...


    By SAGE Publications

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