Showing results for: groundwater sampling Articles
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Seasonal variation in the microbial quality of shallow groundwater in the Kathmandu Valley, Nepal
To develop effective groundwater pollution control strategies for the Kathmandu Valley, Nepal, seasonal variations in microbial quality and their underlying mechanisms must be understood. However, to date, there are no studies that address these topics. In this study, groundwater samples from dug wells were collected during the dry and wet seasons from 2009 to 2012, and Escherichia coli (E. ...
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Evaluation of on-site wastewater system
Escherichia coli contributions to shallow groundwater in coastal North CarolinaThe study goal was to determine if on-site wastewater systems (OSWWS) installed in coastal areas were effective at reducing indicator bacteria densities before discharge to groundwater. Groundwater Escherichia coli (E. coli) densities and groundwater levels adjacent to 16 OSWWS in three different soil groups (sand, sandy loam, and sandy clay loam) were monitored and compared to background ...
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Uranium in Groundwater - Case Study
Customer: Mew Mexico – Espanola Valley Water Clinic Application: Metals analysis in ground water Description: Groundwater samples were submitted by well owners from different regions of New Mexico (around Espanola region) at a water clinic sponsored by the Good Water Company (Testing Service). Problem/Task: The groundwater in this region is contaminated with natural uranium, often above ...
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Radon distribution in groundwater of Taiwan
Radon levels were surveyed in 517 monitoring wells constructed in five major groundwater areas of Taiwan. The radon concentration in groundwater samples varied in a wide range from below the detection limit of 18 pCi/L up to 1,100 pCi/L. A worldwide comparison of reported groundwater radon levels was conducted. Overall radon levels in Taiwan groundwater are relatively low compared to other ...
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Assessment of water qualities and evidence of seawater intrusion in a deep confined aquifer: case of the coastal Djeffara aquifer (Southern Tunisia)
Geochemical analyses of groundwater samples from the Djeffara confined aquifer (Southern Tunisia) were performed. The distribution of saline waters was investigated to identify the origin of the groundwater contamination. The aquifer was shown to be affected by an abnormal increase in groundwater salinity. Near the recharge zone, the groundwater salinity does not exceed 2.5 g l−1 but ...
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Investigation on Potential Groundwater Impacts and Influence of Local Hydrogeology on Natural Attenuation of Leachate at a Municipal Landfill
The influence of local hydrogeology on natural attenuation of contaminants from landfill leachates in shallow aquifer underlying the active Olusosun landfill base in Lagos was investigated. In addition, the level of groundwater contamination in the vicinity of the landfill and of leachate migration pattern in groundwater down gradient of the landfill base was equally assessed. Landfill leachate ...
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Large TCE Plume with Extensive DNAPL - Case Study
ABSTRACT High density sampling program was key to remediation of soil and groundwater impacted by TCE DNAPL at a former industrial site underlain by river deposits and sedimentary bedrock. CHALLENGES Impacted alluvium consisted of poorly sorted, fine to coarse grained sand. The source area was underlain by an aquitard of silt and clayey silt where dense non-aqueous phase liquid (DNAPL) pooled ...
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Bioremediation Removes Environmental Stigma for Resort
Untitled Document Although environmental contamination is far from our minds when we think of Florida resort properties, leaking underground storage tanks can contaminate soil and groundwater, and prevent property financing and redevelopment. Microbial bioremediation has recently been used at two Florida resorts to restore the propertys environmental ...
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Spatio-temporal assessment of groundwater level and quality in urban coastal city Puri, India
Puri city is situated on the shoreline of Bay of Bengal and groundwater is the only source available to meet the city water supply mainly from two demarcated water fields. Due to the anthropogenic activities and absence of sewerage system, groundwater quality is deteriorating through open discharges of domestic waste, open defecation, septic tanks, soak pits, contaminated water pools, unorganized ...
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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 purging of a groundwater monitoring well. The form is ...
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Pump/Recharge Rate Affects Saltwater Intrusion
Untitled Document Many areas of the world use groundwater as their main source of fresh water supply. With the worlds population increasing at alarming rates, the fresh water supply is being continually depleted, increasing the importance of groundwater monitoring. One of the major concerns most commonly found in coastal aquifers, is the induced flow of salt water into fresh ...
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Fighting Saline Intrusion With Desalination
30 years of data show salinity of groundwater increasing even far from coasts After 30 years of monitoring wells, the latest U.S. Geological Survey (USGS) research shows groundwater across the nation is becoming saltier. It has long been known that seawater can intrude when coastal aquifers become depleted and sea levels rise, but the most recent research throws light on saline intrusion far ...
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Why Is Water Level Monitoring Important?
Monitoring water levels can have numerous environmental benefits and is a popular measurement for a number of different industries and organisations. Below we will discuss some of the common applications water level monitoring devices, as well as some of the valuable insights that recording this can reveal. Remote water level monitoring Whereas water level monitoring used to be done by ...
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Residential Property UST Spill - In-Situ Chemical Oxidation - Case Study
An underground storage tank containing heating oil had leaked off-site onto a residential property and migrated under the building foundation. Impacts under the basement resulted in vapour intrusion in the basement and free product in property ...
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Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures
Untitled Document Background The Regional Superfund Ground Water Forum is a group of ground-water scientists, representing EPA's Regional Superfund Offices, organized to exchange information related to ground-water remediation at Superfund sites. One of the major concerns of the Forum is the sampling of ground water to support site assessment and remedial performance ...
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Bioremediation With Horizontal Injection for BTEX and Naphthalene Remediation - Case Study
In situ remediation is a contact sport, requiring contact between the microbes and contamination. Clay-rich soils are particularly challenging as the low permeability limits effective distribution of inoculants. While numerous closely-spaced injection points can improve the distribution of inoculants, this approach is often not possible at active properties and can be costly. Horizontal drilling ...
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Diver-NETZ Reduced operational costs by 97% - Case Study
Near-real-time monitoring increased efficiency, reduced costs, and delivered critical insight into groundwater resources Challenge Reduce municipal groundwater monitoring costs, improve data quality, and achieve greater insight into groundwater resources. Solution Upgrade existing monitoring network with Diver-NETZ* wireless groundwater monitoring system that acquires, transmits and processes ...
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Systems approach - Petroleum site
An 18-month, in-situ biological program, specifically aimed at accelerating the current attenuation process such that the owner can sell the property began May 5, 2000. The remedial approach focused on bacterial population management, nutrient augmentation, terminal electron acceptor enhancement, and an efficient subsurface delivery of the enhancement liquids. Specifically, a novel delivery ...
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Water Corporation
Introduction the Water Corporation was established under statute as a corporatized entity. The mission of the Water Corporation is to conduct a successful business providing quality water and wastewater services to customers to enhance their lifestyle and to support the future development of the State. Asset Monitoring Services was established within the Corporation to undertake data collection ...
By KISTERS
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