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The Behaviour of Mine Tailings During Hydraulic Deposition by G
The behaviour of mine tailings during hydraulic deposition by G. E. BLlGHT*. Pr.Eng.. Ph.D.. D.Sc.(Eng.). F.S.A.I.C.E. and G. M. BENTELt. M.Sc.(Eng.). Grad. S.A.I.C.E. SYNOPSIS The environmentally acceptable disposal of fine-particled mining and industrial wastes by the formltion of hydraul- ic-fill slimes dams is becoming an increasingly important aspect of the total mining endeavour. Relatively little is known of the behaviour of waste slurries during deposition. This paper describes and analyses the following aspects of slurry behaviour: (i) the relationship between viscosity, shear strength, and water content, (ii) the slope assumed by a thickened slurry, (iii) particle-size sorting on a hydraulic-fill beach, (iv) gradients of hydraulic-fill beaches, and (v) internal erosion during the deposition of slurry. SAMEVATTING Die wegdoening van mynbou- en nywerheidsafval met bale fyn partikels deur die vorming van hidroulies gevulde slykdamme, wat vir die omgewing aanvaarbaar is, word 'n al hoe belangriker aspek van die totale mynboupoging. Dur is betreklik min bekend oor die gedrag van afvalflodders tydens afsetting. Hierdie referaat beskryf en ontleed die volgende aspekte van die gedrag van flodder: (i) die verhouding tussen viskositeit, skuifsterkte en waterinhoud, (ii) die helling wat 'n verdikte flodder inneem, (iii) partikelgroottesortering op 'n hidroulies gevulde strand, (iv) gradient van hidroulies gevulde strande, en (v) inwendige erosie tydens die afsetting van flodder. Introduction TABLE I SELECTED INFORMATION ON RATES OF PRODUCTION OF MINING The disposal of fine-grained mining and industrial WASTE wastes by the formation of hydraulic-fill tailings dams is becoming a design and construction activity of ever- Product mined Region producing Dry solid waste waste produced per year increasing scale and importance to the mining industry. -
Sanitary Engineering
Government of Karnataka Department of Technical Education Board of Technical Examinations, Bengaluru Course Title: SANITARY ENGINEERING Credits (L:T:P) : 4:0:0 Total Contact Hours: 52 Course Code: 15CE42T Type of Course: Lectures, Self Study & Credit :04 Core/ Elective: Core Student activities CIE- 25 Marks SEE- 100 Marks Prerequisites: Basic knowledge of environmental science, mathematics. Course Objectives: It aims at enabling the student to understand the urban and rural sanitation. 1. Understand the need of sewage treatment and disposal of a city/town. Course Outcomes: (CO’s) On successful completion of this course, the student will be able to CL Linked Teaching Hrs Course Outcome PO Explain the concept of waste, types of sewage, sewerage system and R/U/A 1,2,3,5,6,8 06 appurtenances. Estimate the quantity CO1 of sewage of a town/city. Analyse the Sewage samples using 1,2,3,4,5,6, standard test procedures and U/A 08 10 CO2 understand the sewerage systems Compute the quantity of storm water flow in different types of surface U/A 2,4,5,6,10 10 CO3 drains and appurtenances. Compare various methods of Sewage 2,3,5,6,7, treatment and sewage/sludge disposal U/A 14 9,,10 CO4 methods. Demonstrate the arrangement of U/A 2,4,5,6,8 06 CO5 sanitary fittings in a building. Identify the sources, effects and 1, preventive measures of air and noise U/A 08 2,5,6,7,10 CO6 pollution. CO7 Suggested activity R/U/A/C 1 to 10 * Total sessions 52 Legend- R; Remember U: Understand Ap: Application Ay: Analysis C:Creation E:Evaluvation *Related to Student activity beyond classroom hours. -
Water Supply and Sanitary Engineering Lecture Note
Water Supply And Sanitary Engineering Lecture Note Wilton decollated stepwise as ametabolic Leigh tantalizes her choriocarcinoma sparging villainously. Elliot is eastwardly: she generalises mutinously and yacht her town. Northwards consumptive, Aaron replaces Telugu and salivate connexions. They started firing staff that were incompetent or corrupt; and they started rewarding staff who were competent. This is not all these bottles one type of water maintains an area or by removing from aswan, and better related documents. Please enter valid email. What is water supply engineering notes i do use of engineers are all. CO TT BOILERS LTD. Fix the water hammer action removal and sanitary engineering lectures sanitation in civil engineers prepared designs for. If the issue is too little water, it would make sense that the insufficient supply would reach equilibrium at a higher price. Analysis of PSC Sections. Enjoy and sanitary work of engineers analyze our sole risk and then people have? Faster than it back to gather broad demographic information immediately to friends and sanitary engineering ae aee government must be updated based out let me. You mentioned that supply engineering lecture note on. Rating will help us to suggest even better related documents to all of our readers! Rural, Institutional and industrial water supply; Physical, chemical and biological characteristics and sources of water, Pollutants in water and its effects, Estimation of water demand; Drinking water Standards, Water Treatment Plants, Water distribution networks. What is Purified Water? Understand the interaction between ground water and surface water. Why water supply engineering lecture note on water utilities around the engineer in irrigation department of engineers analyze our end of environmental engineer and. -
HAZARDOUS WASTE PROCESSING in the Chemical Engineering Curriculum
(.3.... 5 1111113._c_u_r_r_i_c_u_l_u_m__________ ) HAZARDOUS WASTE PROCESSING In the Chemical Engineering Curriculum DIANNE DORLAND, DoRAB N. BARIA University of Minnesota, Duluth • Duluth, MN 55812 s our nation's tolerance for pollution in general has decreased, the use of chemical engineering skills in Dianne Dorland is Associate Professor of chemi waste management has steadily increased. This is cal engineering at University of Minnesota, Duluth. A She received her BS and MS from the South Da particularly true where pollution prevention at the source has kota School of Mines and Technology and her PhD been emphasized over "end of the pipe" treatment. Second from the West Virginia University (1985). She cur rently teaches the Hazardous Waste Processing ary wastewater treatment will continue to be the principal Engineering course sequence for chemical engi public health shield for our sewer discharges, but tertiary neers, and her research interests include industrial wastewater treatment is frequently mandated for an indus wastewater treatment and hazardous waste man agement. trial facility and is becoming more common for wastewater treatment in publicly owned treatment works (POTWs). Dorab N. Baria is Professor of chemical engi neering at the University of Minnesota, Duluth. He Wastewater treatment, or sanitary engineering, has tradi received his PhD in chemical engineering from tionally been part of civil engineering, and more recently of Northwestem Universtiy in 1971. He subsequently worked for the U.S. Atomic Energy Commission the relatively new field of environmental engineering. Sani at the Ames Laboratory, Iowa State University, as tary engineers have satisfactorily designed and operated a research fellow for fifteen months and then was a chemical engineering faculty member at the wastewater and sewage treatment plants without ever having University of North Dakota until 1985, when he taken courses in chemical kinetics and reactor design, chemi joined the UMD faculty. -
Pathogens and Biosolids SCHOOL of PLANT and ENVIRONMENTAL SCIENCES, VIRGINIA TECH
Pathogens and Biosolids SCHOOL OF PLANT AND ENVIRONMENTAL SCIENCES, VIRGINIA TECH By: Michael Badzmierowski and Dr. Gregory Evanylo Pathogens are disease-causing microorganisms that include bacteria, viruses, protozoa, and helminths (parasitic worms). Pathogens can present a public health hazard if they are transferred to food crops grown on land to which biosolids are applied; contained in runoff to surface waters or in leachate to groundwater from land application sites; or transported away from the site by vectors such as insects, rodents, and birds. For this reason, federal and state regulations specify pathogen and vector attraction reduction requirements that must be met by biosolids applied to land. Lists of pathogens that can be found in untreated sewage sludge and the diseases or symptoms that they can cause have been extensively documented (U.S. EPA, 1995; U.S. EPA, 2003; Compost Science & Utilization, 2005; Sidhu and Toze. 2009). In 1993, the U.S. EPA implemented regulations entitled “The Standards for the Use or Disposal of Sewage Sludge” (U.S. EPA, 1993). These regulations, promulgated as 40 CFR (Title 40, Code of Federal Regulations), Part 503 Biosolids Rule (Part 503 Rule), were established to protect public health and the environment from adverse effects of pollutants and pathogens in biosolids. The 503 Rule specifies minimum federal regulations for pathogen and vector attraction reduction requirements that must be met by biosolids applied to land. Currently, the only pathogens regulated are fecal coliform, Salmonella spp., enteric viruses, and helminths. This group of pathogens are known as indicator microorganisms, as they can indicate the presence of a larger set of pathogens. -
Sedimentation of Lake Pillsbury Lake County California
Sedimentation of Lake Pillsbury Lake County California GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1619-EE Prepared in cooperation with the State of California Department of fFater Resources Sedimentation of Lake Pillsbury Lake County California By G. PORTERFIELD and C. A. DUNNAM CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1619-EE Prepared in cooperation with the State of California Department of fFater Resources UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1964 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 CONTENTS Paw Abstract___________________________________________ EEl Introduction._____________________________________________________ 2 Location and general features--___-__-____-_-_-_---__--_--_---_- 2 Purpose and scope_____________________________________________ 2 Acknowledgments ________________'__________________--_-_______ 2 Drainage basin.___________________________________________________ 3 Physiography and soils.._______________________________________ 3 Climate ______________________________________________________ 4 Vegetation__ _--_-_____________-_-___---___-----__-_-_-_-____ 5 Dam and reservoir_____-__-__-_____________-______-___-_-__-_-_-_ 5 Dam_________________________________________________________ 5 Datum.______________________________________________________ 7 Reservoir___________________________________________________ -
Thirsty Eel Oct. 11-Corrections
1 THE THIRSTY EEL: SUMMER AND WINTER FLOW THRESHOLDS THAT TILT THE EEL 2 RIVER OF NORTHWESTERN CALIFORNIA FROM SALMON-SUPPORTING TO 3 CYANOBACTERIALLY-DEGRADED STATES 4 5 In press, Special Volume, Copeia: Fish out of Water Symposium 6 Mary E. Power1, 7 Keith Bouma-Gregson 2,3 8 Patrick Higgins3, 9 Stephanie M. Carlson4 10 11 12 13 14 1. Department of Integrative Biology, Univ. California, Berkeley, Berkeley, CA 94720; Email: 15 [email protected] 16 17 2. Department of Integrative Biology, Univ. California, Berkeley, Berkeley, CA 94720; Email: 18 [email protected]> 19 20 3. Eel River Recovery Project, Garberville CA 95542 www.eelriverrecovery.org; Email: 21 [email protected] 22 23 4. Environmental Sciences, Policy and Management, University of California, Berkeley, Berkeley, CA 24 94720; Email: [email protected] 25 26 27 Running head: Discharge-mediated food web states 28 29 Key words: cyanobacteria, discharge extremes, drought, food webs, salmonids, tipping points 30 31 Although it flows through regions of Northwestern California that are thought to be relatively well- 32 watered, the Eel River is increasingly stressed by drought and water withdrawals. We discuss how critical 33 threshold changes in summer discharge can potentially tilt the Eel from a recovering salmon-supporting 34 ecosystem toward a cyanobacterially-degraded one. To maintain food webs and habitats that support 35 salmonids and suppress harmful cyanobacteria, summer discharge must be sufficient to connect mainstem 36 pools hydrologically with gently moving, cool base flow. Rearing salmon and steelhead can survive even 37 in pools that become isolated during summer low flows if hyporheic exchange is sufficient. -
An Estimation of Potential Salmonid Habitat Capacity in the Upper Mainstem Eel River, California
AN ESTIMATION OF POTENTIAL SALMONID HABITAT CAPACITY IN THE UPPER MAINSTEM EEL RIVER, CALIFORNIA By Emily Jeanne Cooper A Thesis Presented to The Faculty of Humboldt State University In Partial Fulfillment of the Requirements for the Degree Master of Science in Natural Resources: Environmental and Natural Resource Science Committee Membership Dr. Alison O’Dowd, Committee Chair Dr. James Graham, Committee Member Dr. Darren Ward, Committee Member Dr. Alison O’Dowd, Graduate Coordinator May 2017 ABSTRACT AN ESTIMATION OF POTENTIAL SALMONID HABITAT CAPACITY IN THE UPPER MAINSTEM EEL RIVER, CALIFORNIA Emily Jeanne Cooper In Northern California’s Eel River watershed, the two dams that make up the Potter Valley Project (PVP) restrict the distribution and production of anadromous salmonids, and current populations of Chinook Salmon (Oncorhynchus tshawytscha) and steelhead trout (O. mykiss) in the upper mainstem Eel River are in need of recovery. In anticipation of the upcoming FERC relicensing of the PVP, this project provides an estimation of the extent of potential salmonid habitat and its capacity for steelhead trout and Chinook Salmon in the upper mainstem Eel River watershed above the impassable Scott Dam. Using three fish passage scenarios, potential Chinook Salmon habitat was estimated between 89-127 km (55-79 mi) for spawning and rearing; potential steelhead trout habitat was estimated between 318-463 km (198-288 mi) for spawning and between 179-291 km (111-181 mi) for rearing. Rearing habitat capacity was modeled with the Unit Characteristic Method, which used surrogate fish density values specific to habitat units (i.e. pools, riffles, runs) that were adjusted by measured habitat conditions. -
Rules and Regulations
RULES AND REGULATIONS OF THE MEDINA COUNTY DEPARTMENT OF SANITARY ENGINEERING By The Board of County Commissioners Medina County, Ohio Adam Friedrick Patricia Geissman Stephen Hambley Originally Adopted by Resolution No. 79-201 Revised by Resolution No. 07-874 Revised by Resolution No. 10-1579 Revised by Resolution No. 10-1650 Revised by Resolution No. 12-0865 Revised by Resolution No. 13- Copy No. _________ Date of Issue___________ TABLE OF CONTENTS CHAPTER AND SECTION PAGE CHAPTER ONE - INTRODUCTION AND DEFINITIONS 1-1 Section 1.1: Introduction 1-1 Section 1.2: Definitions 1-1 CHAPTER TWO - USE OF PUBLIC SEWERS 2-1 Section 2.1: Prohibition or Storm Water 2-1 Section 2.2: Protection of Facilities During Construction 2-1 Section 2.3: Prohibition of Various Substances 2-1 Section 2.4: Maintenance of Sewers 2-1 Section 2.5: Sewer Maintenance Charge 2-2 Section 2.6: Tampering 2-2 Section 2-7: Repair or Replacement of Service Connections 2-2 CHAPTER THREE - CONSTRUCTION OF SEWERAGE AND WATER SUPPLY IMPROVEMENTS 3-1 Section 3.1: Approved Construction Plans 3-1 Section 3.2: Cut-Sheet Approval 3-1 Section 3.3: Plan Revisions 3-1 Section 3.4: Road Opening Permit 3-1 Section 3.5: Construction Standards and Specifications Conformity 3-2 Section 3.6: Preconstruction Conference 3-2 Section 3.7: Construction Inspection 3-2 Section 3.8: Scheduling Inspection 3-2 Section 3.9: Stop Work Order 3-2 Section 3.10: Sewer Line Minimum Requirements 3-2 Section 3.11: Water Line Minimum Requirements 3-5 Section 3.12: General Construction Minimum Requirements -
Salmonid Habitat and Population Capacity Estimates for Steelhead Trout and Chinook Salmon Upstream of Scott Dam in the Eel River, California
Emily J. Cooper1, Alison P. O’Dowd, and James J. Graham, Humboldt State University, 1 Harpst Street, Arcata, California 95521 Darren W. Mierau, California Trout, 615 11th Street, Arcata, California 95521 William J. Trush, Humboldt State University, 1 Harpst Street, Arcata, California 95521 and Ross Taylor, Ross Taylor and Associates, 1660 Central Avenue # B, McKinleyville, California 95519 Salmonid Habitat and Population Capacity Estimates for Steelhead Trout and Chinook Salmon Upstream of Scott Dam in the Eel River, California Abstract Estimating salmonid habitat capacity upstream of a barrier can inform priorities for fisheries conservation. Scott Dam in California’s Eel River is an impassable barrier for anadromous salmonids. With Federal dam relicensing underway, we demonstrated recolonization potential for upper Eel River salmonid populations by estimating the potential distribution (stream-km) and habitat capacity (numbers of parr and adults) for winter steelhead trout (Oncorhynchus mykiss) and fall Chinook salmon (O. tshawytscha) upstream of Scott Dam. Removal of Scott Dam would support salmonid recovery by increasing salmonid habitat stream-kms from 2 to 465 stream-km for steelhead trout and 920 to 1,071 stream-km for Chinook salmon in the upper mainstem Eel River population boundaries, whose downstream extents begin near Scott Dam and the confluence of South Fork Eel River, respectively. Upstream of Scott Dam, estimated steelhead trout habitat included up to 463 stream-kms for spawning and 291 stream-kms for summer rearing; estimated Chinook salmon habitat included up to 151 stream-kms for both spawning and rearing. The number of returning adult estimates based on historical count data (1938 to 1975) from the South Fork Eel River produced wide ranges for steelhead trout (3,241 to 26,391) and Chinook salmon (1,057 to 10,117). -
Initial Study Report for FERC Projects
Potter Valley Project FERC Project No. 77 Initial Study Report September 2020 ©2020, Potter Valley Project Notice of Intent Parties California Trout Humboldt County Mendocino County Inland Water and Power Commission Round Valley Indian Tribes Sonoma County Water Agency This Page Intentionally Left Blank POTTER VALLEY PROJECT NOTICE OF INTENT PARTIES Potter Valley Hydroelectric Project FERC Project No. 77 Initial Study Report September 2020 ©2020, Potter Valley Project Notice of Intent Parties California Trout Humboldt County Mendocino County Inland Water and Power Commission Round Valley Indian Tribes Sonoma County Water Agency This Page Intentionally Left Blank Potter Valley Project, FERC Project No. 77 Initial Study Report TABLE OF CONTENTS SECTION 1.0 INTRODUCTION .................................................................................... 1-1 1.1 Project Background ....................................................................................... 1-1 1.2 FERC Requirements for Proposed Modification to Approved Studies and New Studies .................................................................................................... 1-4 SECTION 2.0 STATUS OF FERC-APPROVED STUDIES AND PROPOSED STUDY MODIFICATIONS .............................................. 2-1 2.1 AQ 1 – Hydrology .......................................................................................... 2-3 2.2 AQ 2 – Water Temperature ........................................................................... 2-5 2.3 AQ 3 – Water Quality ................................................................................... -
Appendix L Wild and Scenic River Evaluation
APPENDIX L WILD AND SCENIC RIVER EVALUATION INTRODUCTION Congress passed the Wild and Scenic Rivers Act in 1968 to preserve riverine systems that contain certain exceptionally outstanding features such as scenery, recreation, geology, fish and wildlife, historic and cultural resources. Selected rivers and their immediate environments are to be preserved in a free flowing condition and are to be managed for the benefit and enjoyment of present and future generations. In October 1979, an Environmental Message from the President directed the Department of the Interior (USDI) to inventory all potential Wild and Scenic rivers and directed agencies to assess the suitability of the inventoried rivers for additions to the National Wild and Scenic Rivers System. The Nationwide Rivers Inventory (NRI) was conducted by the Heritage, Conservation and Recreation Service, USDI (now the National Park Service). The Middle Fork of the Eel River, which originates on the Mendocino National Forest, was the only river on the Mendocino National Forest included on the preliminary (Phase I) NRI in 1980. In January 1981, the Secretary of the Interior designated five California rivers as components of the National Wild and Scenic Rivers System under Section 2 (a) (il) of the National Wild and Scenic Rivers Act. The lower 23.5 miles of the Middle Fork of the Eel River was included in this designation and is currently managed as a Wild River. The upper 14.5 miles, which includes the headwaters of the Middle Fork of the Eel River, had not been analyzed for designation. This upper segment lies within the Yolla Bolly-Middle Eel Wilderness.