Model

Years Power Torque 0–100 km/h (0-62 mph) Top speed Range e-tron 55 quattro(post-update) 2020– 125 kW(168 hp) + 140 kW(188 hp)(boost mode: 300 kW(402 hp)) 247 N?m(182 lb?ft) + 314 N?m(232 lb?ft)(boost mode: 664 N?m(490 lb?ft)) 6.6 s(boost mode: 5.7s[52]) 200 km/h(124 mph)[52] EPA: 222 mi (357 km) WLTP: 365 to 436 km (227 to 271 mi)[52] e-tron 55 quattro 2018–2019 125 kW(168 hp) + 140 kW(188 hp)(boost mode: 300 kW(402 hp)) 247 N?m(182 lb?ft) + 314 N?m(232 lb?ft)(boost mode: 664 N?m(490 lb?ft)) 6.6 s(boost mode:

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Battery and Charging The battery of the Audi e-tron 50 quattro has a total capacity of 71 kWh. The usable capacity is 64.7 kWh. A range of about 175 miles is achievable on a fully charged battery. The actual range will however depend on several factors including climate, terrain, use of climate control systems and

The Canadian mineral industry generates one million tonnes of waste rock and 950,000 tonnes of tailings per day, totaling 650 million tonnes of waste per year. After being removed, waste rock, which often contains acid-generating sulphides, heavy metals, and other contaminants, is usually stored above ground in large free-draining piles. This waste rock and the exposed bedrock walls from which it is excavated are the source of most of the metals pollution caused by mining in British Columbia. In other regions of North America tailings also represent amajor source of heavy metals contamination of waterways.Types of Water Pollution from MiningThere are four main types of mining impacts on water quality.1. Acid Mine DrainageAcid Rock Drainage (ARD) is a natural process whereby sulphuric acid is produced when sulphides in rocks are exposed to air and water. Acid Mine Drainage (AMD) is essentially the same process, greatly magnified. When large quantities of rock containing sulphide minerals are excavated from an open pit or opened up in an underground mine, it reacts with water and oxygen to create sulphuric acid. When the water reaches a certain level of acidity, a naturally occurring type of bacteria called Thiobacillus ferroxidans may kick in, accelerating the oxidation and acidification processes, leaching even more trace metals from the wastes. The acid will leach from the rock as long as its source rock is exposed to air and water and until the sulphides are leached out – a process that can last hundreds, even thousands of years. Acid is carried off the minesite by rainwater or surface drainage and deposited into nearby streams, rivers, lakes and groundwater. AMD severely degrades water quality, and can kill aquatic life and make water virtually unusable.2. Heavy Metal Contamination & LeachingHeavy metal pollution is caused when such metals as arsenic, cobalt, copper, cadmium, lead, silver and zinc contained in excavated rock or exposed in an underground mine come in contact with water. Metals are leached out and carried downstream as water washes over the rock surface. Although metals can become mobile in neutral pH conditions, leaching is particularly accelerated in the low pH conditions such as are created by Acid Mine Drainage.3. Processing Chemicals PollutionThis kind of pollution occurs when chemical agents (such as cyanide or sulphuric acid used by mining companies to separate the target mineral from the ore) spill, leak, or leach from the mine site into nearby water bodies. These chemicals can be highly toxic to humans and wildlife.4. Erosion and SedimentationMineral development disturbs soil and rock in the course of constructing and maintaining roads, open pits, and waste impoundments. In the absence of adequate prevention and control strategies, erosion of the exposed earth may carry substantial amounts of sediment into streams, rivers and lakes. Excessive sediment can clog riverbeds and smother watershed vegetation, wildlife habitat and aquatic organisms.Acid Mine Drainage: Prevention is the KeyAcid Mine Drainage is a watershed issue of importance to the full range of public stakeholders. To begin to address the very real problems posed by AMD, the government must:prevent future loss of aquatic habitat to Acid Mine Drainage,inventory and cleanup existing acid generating mine sitesimprove public access to information on monitoring and enforcement of AMD treatment and reclamation, andprevent future AMD by improving environmental risk assessment and adopting a liability prevention approach to future AMD mine assessments.Water QuantityMining can deplete surface and groundwater supplies. Groundwater withdrawals may damage or destroy streamside habitat many miles from the actual mine site. In Nevada, the driest state in the United States of America, the Humboldt River is being drained to benefit gold mining operations along the Carlin Trend. Mines in the northeastern Nevada desert pumped out more than 580 billion gallons of water between 1986 and 2001 – enough to feed New York City’s taps for more than a year. Groundwater withdrawn from the Santa Cruz River Basin in Southern Arizona for use at a nearby copper mine is lowering the water table and drying up the river.Lessons from the PastThe Tsolum River Experience: Short-term mine, long-term costs.The Tsolum River on Vancouver used to run clean and clear from its source near Mount Washington to the Courtenay estuary. For thousands of years, the river provided rich runs of coho, pink, chum and cutthroat salmon, as well as steelhead trout that weighed up to 23 pounds. The river was rich with life, sustaining human communities and the entire ecosystem through which it flowed. Impacts on the river started in the post war era when logging and irrigated agriculture moved into the watershed, gravel was mined from the riverbed in the lower reaches and then, in 1964, the Mt Washington Copper Mining Co. moved into the upper Tsolum watershed. The company began a small open-pit copper mine adjacent to the Tsolum River. During three years of operation, the company excavated 360,000 tonnes of ore and 940,000 tonnes of waste rock before abandoning the mine in 1966. It was a small mine, high up in the mountain, disturbing an area of only 13 hectares. But it left behind a toxic legacy that has spread far beyond the mine’s perimeter. After 1966, the coho escapement declined steadily from 15,000 to a low of 14 in 1987. The coho are particularly vulnerable to toxicity caused by acid mine drainage as they reside in the system for up to 14 months after hatching. Trout are thought to be as vulnerable to the changes in water quality because of their long residence in fresh water. Despite expensive, publicly funded restocking efforts, government reports show “virtually no salmon” living in or returning to the Tsolum River. Also, the wonderful steel-head runs are also gone from the river—a tremendous loss. By 1985, with the demise of the Tsolum River came the loss of the Tsolum river fishery of pinks, coho, chum and steelhead, which had generated as much as $2 million per year for the community. The government’s watershed assessment concluded that “the fisheries resource is believed to have declined [by 90 per cent] predominantly because of Acid Mine Drainage from Mount Washington.” It has been estimated that the loss of the fishery, combined with millions of taxpayer dollars spent for mine clean-up, have cost at least $60 million so far.What Can be Done?“Once a mine is in operation water protection must remain the highest goal of the company, even if it means reduced mineral productivity. Adopting this common-sense ethic is the only way we can ensure that the golden dreams of mining do not turn into the nightmare of poisoned streams.” (Carlos De Rosa & James Lyon, Golden Dreams, Poisoned Streams. Mineral Policy Center, Washington DC, 1997).Changes in laws, technologies and attitudes have begun to address some of the most immediate threats posed by mineral development, but there are still many areas of mining practices and regulations that need to be addressed. Unfortunately, significant reductions in federal and provincial government budgets have affected the capacity to administer, monitor and enforce existing laws and policies. As a result, there have been ongoing water quality and waste management problems at many mines. There have been a number of preventable accidents including massive sediment loading into fish-bearing streams, the building of roads with acid generating waste rock, non-compliance with waste handling plans, and repeated violations of water quality standards. Alan Young, of the Environmental Mining Council of BC, notes that “over the last year, we have seen an inability in regional government offices to monitor and enforce environmental standards at several mine sites. The agencies do not have the resources to do the job, and unfortunately, some companies don’t seem to respond unless penalized. Without enforceable standards we are faced with decreased corporate accountability, and increased ecological liability.” According to Young, “we can pay now or pay later, and history has shown us that, especially with mining, clean up is always more expensive than prevention. Good companies understand this concept, but the laws are not there for the good guys.” Deregulation favoured by the industry would further reduce accountability, consistency and transparency with respect to protecting clean water. Without an effective regulatory base, voluntary measures have not, and will not deliver reliable, consistent safeguards and environmental performance improvements.For the sake of current and future generations we need to safeguard the purity and quantity of our water against irresponsible mineral development. We need to ensure the best pollution prevention strategies are employed in cases where the risks can be managed. We also need to recognize that in some places mining should not be allowed to proceed because the identified risks to other resources, such as water, are too great.In the right place – and with conscientious companies, new technologies and good planning – many of the potential impacts are avoidable. In fact, most mine pollution arises from negligence not necessity.The Safe Drinking Water Foundation has educational programs that can supplement the information found in this fact sheet. Operation Water Drop looks at the chemical contaminants that are found in water; it is designed for a science class. Operation Water Flow looks at how water is used, where it comes from and how much it costs; it has lessons that are designed for Social Studies, Math, Biology, Chemistry and Science classes. Operation Water Spirit presents a First Nations perspective of water and the surrounding issues; it is designed for Native Studies or Social Studies classes. Operation Water Health looks at common health issues surrounding drinking water in Canada and around the world and is designed for a Health, Science and Social Studies collaboration. Operation Water Pollution focuses on how water pollution occurs and how it is cleaned up and has been designed for a Science and Social Studies collaboration. To access more information on these and other educational activities, as well as additional fact sheets, visit the Safe Drinking Water Foundation website at www.safewater.org.Did you know that there are currently hundreds of teachers waiting to use an Operation Water Pollution kit in their classroom? Please help us to send more Operation Water Pollution kits to schools! Please chip in $5 or donate $20 or more and receive an Official Donation Receipt for Income Tax Purposes – or donate $170 to provide an Operation Water Pollution kit for a school.

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