Sometimes I see art repost instagram accounts with lots of followers and they always remind me that I still haven't looked up the word for a place where large amounts of trash gather
Unique Way Of Protest Barbecue On Waste Dump कूड़ा नहीं उठ रहा था..परेशान शख्स ने कचरे पर लगाई बार्बेक्यू
Unique Way Of Protest Barbecue On Waste Dump कूड़ा नहीं उठ रहा था..परेशान शख्स ने कचरे पर लगाई बार्बेक्यू
32 साल के आशुतोष सिंह ने अपने घर के बाहर लगे कचरे के ढेर का उपयोग ईंधन के तौर पर करते हुए एक पोर्टेबल बारबेक्यू ग्रिल लगाई.
कूड़ा नहीं उठने से परेशान था लखनऊ का यह शख्स. (Photo Credit: न्यूज नेशन)
लखनऊ:
लखनऊ के इंदिरा नगर इलाके के निवासी ने लखनऊ नगर निगम (एलएमसी) का अनूठे तरीके से विरोध करते हुए बार्बेक्यू ग्रिल के नीचे कोयले की बजाय कूड़े के ढेर का इस्तेमाल किया. 32 साल के आशुतोष सिंह ने अपने…
WASHINGTON | House bill would revive mothballed Nevada nuclear waste dump
New Post has been published on https://is.gd/E6v5UV
WASHINGTON | House bill would revive mothballed Nevada nuclear waste dump
WASHINGTON — The House is moving to approve an election-year bill to revive the mothballed nuclear waste dump at Nevada’s Yucca Mountain despite opposition from home-state lawmakers.
Supporters say a bill slated for a vote Thursday would help solve a nuclear-waste storage problem that has festered for more than three decades. More than 80,000 metric tons of spent fuel from commercial nuclear power plants sit idle in 121 communities across 39 states.
The bill would direct the Energy Department to continue a licensing process for Yucca Mountain while also moving forward with a separate plan for a temporary storage site in New Mexico or Texas.
It’s past time for the federal government to “fulfill its obligation and permanently dispose of the spent nuclear fuel sitting in our states, alongside our lakes, rivers and roadways,” said Rep. John Shimkus, R-Ill., the bill’s sponsor.
“People are ready to do something rather than nothing,” he added, predicting a strong bipartisan vote in favor of the bill.
President Donald Trump’s administration has proposed reviving the long-stalled Yucca project 100 miles (161 kilometers) northwest of Las Vegas, but the plan faces bipartisan opposition from the state’s governor and congressional delegation.
Energy Secretary Rick Perry has said the U.S. has a “moral obligation” to find a long-term solution to store spent fuel from its commercial nuclear fleet. Trump’s budget proposes $120 million to revive the Yucca project.
“We can no longer kick the can down the road,” Perry said last year.
Nevada Sen. Dean Heller, a Republican who is locked in a close race for re-election, blasted the upcoming vote as “an exercise in futility.”
Heller vowed that, “Under my watch, I will not let one more hard-earned taxpayer dollar go toward this failed project — just as I have in the past. Yucca Mountain is dead, it is that simple.”
Democratic Rep. Jacky Rosen, Heller’s likely opponent in the general election, has filed an amendment that would delay any licensing activity for Yucca Mountain until the White House Office of Management and Budget conducts a study of the economic effects from alternative uses of the site.
“I’m using every tool at my disposal to put an end to this administration’s reckless plans to turn Nevada into a dumping ground for highly radioactive nuclear waste,” Rosen said in a statement.
She called Yucca a “failed project” and “complete waste of time and taxpayer money.”
Nevada Democrats blame Heller for even allowing the vote, noting that he is a close friend of House Majority Leader Kevin McCarthy, R-Calif., who controls the House schedule.
“Sen. Heller tries to brag about standing between Washington and Yucca Mountain, but our weak and ineffective senator couldn’t even dissuade one of his closest friends on Capitol Hill from preparing to ram this bill through the Republican-controlled House,” said Sarah Abel, a spokeswoman for Nevada Democrats.
While the fight over Yucca resumes, lawmakers say they hope to make progress on a plan to temporarily house tons of spent fuel that have been piling up at nuclear reactors around the country. Private companies have proposed state-of-the-art, underground facilities in remote areas of west Texas and southeastern New Mexico to store nuclear waste for up to 40 years.
The nuclear industry has said temporary storage must be addressed since the licensing process for Yucca Mountain would take years under a best-case scenario.
__
By MATTHEW DALY,By Associated Press – published on STL.News by St. Louis Media, LLC (Z.S)
ToxiCity: lifestyle at Agbobloshie, the world's largest e-waste dump in Ghana
ToxiCity: lifestyle at Agbobloshie, the world’s largest e-waste dump in Ghana
ToxiCity: life at Agbobloshie, the world’s largest e-waste dump in Ghana
E-waste, the term given to discarded electronic appliances, is usually shipped by designed nations to poorer nations this kind of as Ghana. RTD visits the country’s most infamous dumping ground, Agbogbloshie. Locals call it “Sodom and Gomorrah” soon after the infamous Biblical sin cities. Its air and soil are polluted with…
They include pursuing a waste dump, simplifying mining approvals processes and seeking a relaxation of federal restrictions on nuclear power generation in Australia.
Tentative findings released in February recommended the creation of a high-level waste nuclear dump that would store 138,000 tonnes of spent fuel from around the world, as well as a separate “above-ground interim storage facility”.
The Federal Council believes that Australia should expand its current nuclear industry to incorporate the entire uranium fuel cycle, the expansion of uranium mining to be combined with nuclear power generation and worldwide nuclear waste storage in the geotechnical stable and remote areas that Australia has to offer.“
Impact assessment of mining projects on groundwater resources can be a challenging task due to uncertainty on groundwater flow regime, the complex numerical tools to successfully simulate stresses on groundwater resources posed by the mining projects, timeframe and budget of EIAs.
In this article, we will call EIA the document issued before the mine begins for regulatory official approval and social license.
Before a mining project begins and along mine life, there is a huge interest in describing the general groundwater flow condition and predict project impacts along the mine's life and when closure. Regulatory officials are deeply focused on the predictive simulation of all mining aspects relevant to the flow and quality on groundwater resources.
Data available for an EIA is limited, as well as the quality of the predictive simulations. From the numerical modeling perspective, it is even a misuse of resources to have a high complexity on the simulations based on short records of groundwater levels and hydraulic tests.
Some predictive simulations are feasible to be performed before the start of the mining operation on a standard EIA, while others can be only assessed along the mine's life, and few will rely on scientific research.
Predictive Simulation Checklist
We wanted to propose a checklist of a common EIA predictive simulations. The proposed simulations are not mandatory, and mining projects will require to consider specific impacts, however this list is a starting point to plan the numerical modeling work. These simulations are listed below with a brief scope.
Pit Development
Pit inflows and predrainage flow rates: From the calibrated model, a transient simulation of mine inflows must be simulated to predict flow to the mine work, this simulation can include the planned predrainage schemas. Total inflows have to be separated in contribution from regional flow and storage. Results from this simulation include also the water table by end of the mine and cone of depression for different mine years (minimum 4).
Pit rebound: After the end of the mine and upon climate conditions, the pit will be flooded. The pit flooding simulation is iterative and interacts with a surface water model. Results from this simulation should include the final water table distribution and the final water level on the pit. It is important to analyze pit lake overflow and related groundwater flows coming from the pit lake.
Impact to surface water and groundwater flow regimes
Baseflow impact: Most of the new mining projects involve short mine life (less than 20 years). The related baseflow maximum impact will occur after the end of mine, therefore it is important to consider long transient simulations. The simulation should include the water table and cone of depression related to the maximum decrease on the baseflow.
Groundwater storage: Mine pit will take water from groundwater storage along its life. The groundwater will fill up some years after the end of the mine. Numerical simulation should provide the plot and charts of water extracted/refilled to groundwater storage till groundwater flow regimen reaches steady flow conditions again.
Waste Dumps and Tailing Deposits
Seepage flowpaths: As first glance of the impact posed by seepage, a particle tracking simulation will be needed. This simulation will provide a panorama of the flowpath distribution, basins, water courses involved and arrival times.
Contaminant transport modeling: With the predicted concentration of key contaminant on waste dumps and tailing deposits, a contaminant transport model should be run.
Project Management
Since the EIA is a collaborative work, it is important for the hydrogeological team to have an agreement on the numerical simulation that will be included on the report as soon as the conceptual model is finished. This practice will optimize the time dedicated to the numerical modeling work.
It is important to safe modeling hours for the observation phase, since the regulatory officials/stakeholders can require more simulations or further simulation on the reported impacts.
Tailing and waste dump seepage evaluation and remediation
Current and historical mining activities have a seepage and waste-dumps legacy that are the concern for mining companies, population and regulatory authorities.
Old waste-dumps have not been regulated and most of the old tailings have been deposited in soils without covering. Tailing deposits and waste-dumps should be analyzed in a particular way because of the ground, instalation details, mineralized body geology, mined type, weather and other parameters.
Recent mining activities count with major engineering in waste-dumps and tailing deposit instalations, as well as better monitoring evaluation seepage. However, there is still a seepage risk coming from old and new waste-dumps and their transport constituties a potential environmental issue.
Conceptual Framework
Precipitation and regional groundwater flow interact with tailing deposits and waste-dumps producing leachates, that is contaminated water with heavy metals and other components that are in contact as it moves through the deposit. Leachate leaks pollute groundwater under tailing deposits and waste-dumps and form the "contamination plume".
The groundwater flow causes leachates plume to extend outside waste-dumps and tailing deposits, in some cases, a hundred of meters.
Figure 1. Example of a contamination plume extension of waste-dumps. Note the interaction between the superficial and groundwater.
Objectives
The proposal has as objective to completly understand the filtration process and extension of the contamination plume and its implementation for more efficient remediation and isolation measures of the contamination plume away from superficial and groundwater.
Remediation measures are intended to minimize pollutants migration in groundwater. Calculations and predictions are focused on the design of a low cost remediation system and easy instalation with continuous monitoring to measure effectiveness.
Working methodology
The methodology provided by Gidahatari includes all relevant aspects to the evaluation and remediation of the tailing deposits and waste-dumps filtration, from the characterization to the continuous monitoring of filtration and efectiveness of the remediation systems.
Figure 2. Evaluation and remediation of filtration of tailing deposits and waste-dumps steps.
1. Field investigation
Initially, we performed fieldwork to identify the current tailing situation in the terrain. This work consists in the evaluation of soil profiles in pits and identification of water bodies surrounding and their status.
Take chemical samples of the main water bodies, natural springs, tailing lakes and the upwelling of leachates.
Initial and final topography data recopilation, tailing deposits and waste-dumps instalation details, interception system data, meteorology, rainfall, flow records and water chemestry.
2. Initial hydrogeochemistry characterization and general modeling
With the hydrological and chemistry information, the conceptual model is built and boundary conditions of the general numerical model are defined.
The general numerical model is built with average values of hydraulic conductivity. Based on the water cycle characterization, referencial recharge values and evapotranspiration are incorporated to the model. Numerical modeling work has water flow and mass transport.
Model results are used to determine the location and depths of monitored wells.
Figure 3. Piezometric netwrok proposed for leachates monitoring of a tailing deposit using general numerical modeling
3. Piezometer instalation and instrumentation, sampling and hydraulic test
With the information provided by the general modeling, observation wells of 2” shallow (< 15 m) and deep (> 15 m) are installed. Relevant hydrogeochemical samples are taken for contaminant plumes identification.
Figure 4. Seepage line flow and shallow and deep piezometers location.
Piezometers are instrumented with authomatic recorders of level and electrical conductivity. Collected data is used for the pumping test and the remediation measures monitoring.
Inside the drilled holes, 4" wells are included for the pumping test. Durability of the pumping test is considered important because the result contemplates a better answer of the aquifer and is a fundamental part in the calibration of the refined numerical model.
4. Refined numerical modeling
The general numerical model is refined with drilling logins, piezometric information, hydrogeochemistry results and the pumping test hydraulic parameter values. Refinement includes a better discretization of the quaternary layer and weathered rock under tailing deposits and waste-dumps.
Refined numerical modeling is equally mass and transport. Numerical model calibration is performed with piezometric levels and concentrations of heavy metal values observed.
Also, a quantitative analysis of the mechanisms of natural attenuation, precipitation and absorption of metal in suspension is performed.
Geology site can represent complexities in characterizing the contaminat plume due to the presence of fine layers inside the quaternary material, so the numerical modeling should represent this behavior with a suitable element discretization and hydraulic parameters.
5. Remediation measures simulation
With the calibrated model, remedial measures are proposed, these can be:
Pumping wells
Trenches of remediation
Vertical drains
Coverages
Impermeable barriers with reactive barriers
Several alternatives of remediation will be simulated with the objective of finding the most consistent solution, of easy implementation, with low cost and less operation time.
Figure 5. Capture well zones of seepages coming from tailing deposits.
6. Remediation measures implementation and monitoring
Conceptualized remedial measures are implemented in the field, and the monotoring of levels and concentrations in the piezometric network installed is done. Collected data is compared with predicted and, if necessary, an adjustment of remedial measures is defined.
