tailieunhanh - Good practice guidelines to the environment agency hydropower handbook

Mercury concentrations have shown a maximum of eight parts per trillion prior to entering Lake Athabasca. The Alberta guideline, which is the most protective of any in North America, is 13 parts per trillion. To put it in perspective, one part per trillion is equivalent to one drop of detergent in enough water to fill a string of railroad tank cars 16 kilometers (10 miles) long. For arsenic, all of the samples collected since 1990 have been below provincial water guidelines. The province has been actively sampling traditional foods in the area (. wild meat) and found that arsenic. | Environment Agency enhancing. improving. cleaning. restoring. changing. tackling. protecting. reducing. creating a better place. influencing. inspiring. advising. managing. adapting. Good practice guidelines to the environment agency hydropower handbook The environmental assessment of proposed low head hydropower developments Published August 2009 ea br e std vl We are the Environment Agency. It s our job to look after your environment and make it a better place - for you and for future generations. Your environment is the air you breathe the water you drink and the ground you walk on. Working with business Government and society as a whole we are making your environment cleaner and healthier. The Environment Agency. Out there making your environment a better place. Published by Environment Agency Rio House Waterside Drive Aztec West Almondsbury Bristol BS32 4UD Tel 0870 8506506 Email enquiries@ Environment Agency All rights reserved. This document may be reproduced with prior permission of the Environment Agency. Environment Agency Hydropower_GPG 1 Contents 1 Introduction 3 2 Environmental site audit esa 5 A Water Resources Checklist 6 B Conservation Checklist 8 C Chemical Physical Water Quality Checklist 10 D Biological Water Quality Checklist 11 E Fisheries Checklist 12 F Flood Risk Management Checklist 14 G Hydropower site Layout 16 3 Ecological Requirements 18 4 Hydropower Scenarios 22 5 Permitting 26 6 Abstracted flow regime and flow in the depleted reach 29 7 Flow monitoring 36 8 Fish passage 38 9 Fish Screen Requirements and design 40 Environment Agency Hydropower_GPG