The English-Wabigoon River System: 11. Suppression of Mercury and Selenium Bioaccumulation by Suspended and Bottom Sediments

Total Page:16

File Type:pdf, Size:1020Kb

The English-Wabigoon River System: 11. Suppression of Mercury and Selenium Bioaccumulation by Suspended and Bottom Sediments The English-Wabigoon River System: 11. Suppression of Mercury and Selenium Bioaccumulation by Suspended and Bottom Sediments JOHNB%i'. M. RUDDAND MICHAELA. TURNER Freshwater Institute, Department c.f FisBzeries and Oceans, 581 Unbversi~g'Crescent, Wblznigeg, Mata. R3T 21V$ Rum, 9. W. AND M. A. TURNER.1983. The English-Wabigr~sn River system: II. Suppression of mercury and selenium bioaccumulation by suspended and bottom sediments. Can. 9. Fish. Aquat. Sci. 40: 2218-2227. Bioaccumulation of "3Wg and 75Seby several members of the food chain, including fish, was followed in large in situ enclosures in the presence and absence of organic-poor sediment. When the sediment was absent. 203Hgwas bioaccumulated 8- to 16-fold faster than when it was either suspended in the water or present on the bottom of the enclosures. Mercury- contaminated and uncontaminated sediments were equally effective at reducing the rate of radiolabeled mercury biasaccurnanlation, apparently by binding the mercury to fine particulates making it less available for methylation and/or bioaccumulation. Based on these results, a mercury ameliorating procedure involving senlicdpntinuous resuspension of organic-poor sediments with downstream deposition onto surface sediments is suggested. The presence of sediments, in the water or on the bottom of enclosures, also reduced radiolabeled selenium bisaccumulation. The degree of inhibition (2- to IO-fold) may have been related to the concentration of organic material in the predominantly inorganic sediments. Implications of this research with respect to mercury-selenium interactions in aquatic ecosystems are discussed. RUDD, J. W. M., AND M. A. TURNER.1983. The English- Wabigoon River system: HI. Suppression of mercury and selenium bioaccurnulation by suspended and bottom sediments. Can. J. Fish. Aquat. Sci. 40: 2218-2227. Nous avons suivi Ia bioaccumulation de "('3Hget de '"e dans plusieurs membres de la chaine alimentaire, y compris les poiissons, places dans de grandes enceintes in situ, en presence et en l'absence de sediments pauvres en matiere organique. En I'absence de sedi- ments, 20%IHg,est bioaccumulC de 8 h 16 fois plus ragidement que quand il est soit suspendu dans I'eau ou prksent sur le fond des enccintes. Ees sediments contarnines par le mercure et non contarninks ssnt tout aussi efficaces B kduire le tau de bis~accumulationde mercure radinactif, apparemment par fixation du lnercure sur de fines particules. ce qul le rend anoins accessible a Ia mkthylation ou a la bioaccumulation, ou aux deux. En nous fondant sur ces rdsulkats, nous suggCrons une rnkthode d9amtlioratisndu mercure, impliquant une resuspen- sion semi-continue des skdiments pauvres en matikre organique, avcc dkposition en aval sur les sCdiments suprficiels. La presence de skdirnents dans l'eau ou sur le fond des enceintes rdduiit egalement Ia bioaccumulatioan de selenium radioactif. Il se put que le degre d'inhi- bition soit reliC a %aconcentration du rnatkriel organique dans les sediments en grande partie inorganiques. Nous analysons les implications de cette recherche sous 17angIedes interactic~ns mercure - sdlCnium dam les kcosystt3nes aquatiques . Received May 11, 1982 Accepted August 24, 1983 SUSPENDEDsediments are thought to play an important role in and Mn) coatings on the surfaces of clay particles (Andersson the bioconcentration of toxic substances (Gibbs 1973; Hem 1978, cited in Awdersson 11979; Jsnasson 1970; Hem 1972; 1976; Karickhoff and Brown 1978; Popp and Laquer 1980; Jackson et al. 1978; Andersson 1979; Jackson 1979). Tessier et al. 1980). They have often been considered as Sediments might also serve a beneficial role by reducing vectors capable of moving pollutants from their sources to the bioavnilabiIity of pollutants such as Hg. In the Hg- distant locations where the toxic substances can be accumu- polluted English-Wabigoon River system (Armstrong and lated by aquatic biota. At neutral pH the sediment-borne pol- Hamilton 1973), the two most important sites of Hg methyl- lutants may be associated with particulate or dissolved organic ation and bioaccumuiatisn are the water column and surface materials, clay mineral, or organic and inorganic (usually Fe sediments (Rudd et al. 1983). If sediments were deliberately resuspended as a Hg ameliorating procedure, they might Printed in Canada (.I693 1) reduce Mg anethylation and bioaccurnulaticsn while the sedi- Imprim6 au Canada (96931) 2218 RUDD AND TURNER: SUPPRESSION OF Hg BIOACCUMULATION BY SEDIMENTS TABLEI. Chronology of 1979 enclosure additions. Days after isotope addition Addition - - Enclosures filled 3 kg NaCl per enclosure yielding final concentrations of 13 mg Na. L-' 18 kg sediment added to the sediment addition enclosure 5.7 mCi Z0%Ig(~03)2and 1.4 mCi ~;'Se0, to each enclosure on June 4, 1979 40 dace per enciosure at MW initial density of 40 kg. ha-' 12 kg sediment added to the sediment addition enclosure 18 caged crayfish to each enclosure 6 caged clams per enclosure 12 kg sediment added to the sediment addition enclosure Fourth sediment addition to examine short-term radioisotope speciation Termination of experiment TABLE2. Wabigoon Lake sediments taken from the central basin of Wabigoon Lake. Surface organic floc was removed during sampling. All analyses are presented on a dry weight basis. 5% sand 9% silt 96 clay Carbon Nitrogen Phosphorus Carbonate Total Hg Sample < 50 ym 50-2 ym < 2 pm (%) (%) 6%) (%B (lagsg-') Wabigoon Lake (as 9% of inorganic fraction) 9 46 42 - - - - - Wabigoon Lake (as 5% of total sediment) 9 48 41 2.0 0.2 0.07 8.3 8.83 ments were suspended in the water column and after they were enclosure), while tho two other enclosures were maintained deposited onto the surface sediments. This possibility was as controls. examined during 1978 and 19'79 using ecosystem-level ex- periments in large enclosures located in Clay Lake (5O0O3'N, 93"30'W), which is the first major reservoir of the English- Wabigoon River system. The experiments were designed to On day Q of the experiments (July 15, 1978; June 4, test the effects of sediment suspension on bioaccumulation of 1979) each enclosure received approximately 5.7 mCi of Hg by fish and other members of the food chain. 203Hg(N03)2(1 Ci = 37 GBq, approximately 15 ng Hg L-' The effect of sediments on rates of Se bioaccumulation was added as carrier) and about 1.4 mCi of ~24?3eO,(New was also tested. This was done because trace Se addition to England Nuclear). A single addition of foodgrade NaCl was Hg-contaminated waterways was being considered as an made to each enclosure for checks of enclosure leakage. The ameliorating procedure (Rudd et a!. 1980~;Rudd et al. 1983; resulting Naf and @I- concentrations were approximately Turner and Rudd 1983). twice preaddition levels, as determined by atomic absorption spectrometry (Stainton et al. 1977). No leakage was detected during the course of either of the experiments. The control enclosures received no other chemical addi- Two separate experiments were conducted in large en- tions. The 1978 plastic bottom enclosure received sufficient cBosures during the summers of 1978 and 1979. The en- NaHzP04 and NaPJ03 to maintain primary productivity rates closures were 10 m in diameter and either 2 or 1.5 m deep at the level of the control. For the 1979 experiment, sediment with a volume of abut 100 m3. They were constructed of was obtained from the central basin of Wabigoon Lake, which cross-laminated polyethylene as described in Rudd et al. was upstream of Clay Lake and was not Hg contaminated. (1980b, 1980~)except that most of the enclosures had water- The surface layer (0.5 cm deep) of recently deposited organic tight polyethylene bottoms. They were situated in a sheltered material was removed. Sediment was added to this enclosure bay of Clay Lake, northwestern Ontario (Armstrong and on three occasions (Table I). The first addition was approxi- Hamilton 19'73). The plastic bottom encIosures were filled mately 18 kg (dry wt) of Wabigoon Lake sediment while the over a 3-d period with Clay Lake epilimnion water. Pumps second and third additions were about 12 kg each. On each were moved repeatedly from enclosure to enclosure to ensure occasion, wet sediment (59% water) was suspended through- that water and plankton in all the enclosures were similar. out the water column of the suspended sediment enclosure by The 1978 experiment had a control enclosure with a bottom dispersing it into the wake of an electric outboard motor. of natural Clay Lake sediments and a test enclosure with a Sediment addition continued until the Secchi depth (Welch water-tight plyethylene bottom, which prevented contact 1948) was 20 cm. Particle size analysis of the sediment was with lake sediments. The I979 experiment had thee en- done by the pipette method (McKeague 1978). This material closures with sealed plastic bottoms. Sediment was added was largely conaposed of silt and clay-sized particles and was to the water column of one enclosure (sediment addition of a low Hg concentration (Table 2). The sediment additions CAN. J. FISH. AQUAT. SCB., VOL. 40, 1983 TABLE3. Secchi depth, total suspended solids, and He, data at four sites on Clay Lake during the open water season (May-Nov.) sf 1978. - - -- -- - Secchi depth Suspended solids Total Hg CH,Hg + Site (mgSL-') (ng.L-') (V3-L '1 - - Inflow 0.5820.10, N = 24 I0.4k2.1, N = I2 35.3910.7. N = 48 0.048 (;1.69),' 18.' = 22 (0.54k0.87, N = 9)" (9.2k0.8, N = 51h Eastern basin 0.6320.14, N = 24 8.523.5, N = 12 30.5214.0, N = 46 Western basin I.24?0.42, N = 23 2.320.9, N = 12 19.62 9.9, N = 3% Outflow I .39+0.42, N - 24 2.428.8, N = I2 17.9k 7.4, N = 50 0.10 (:1.62),' N = 22 (1.29f0.29, N = 9)" (2.4k0.9, N = 51h "Sampled weekly during Aug.
Recommended publications
  • Long Lake and Ogoki River Water Diversion Projects
    14 Wawatay News NOVEMBER 20, 2020 ᐧᐊᐧᐊᑌ ᐊᒋᒧᐧᐃᓇᐣ Community Regional Assessment in the Ring of Fire Area Engagement Activities and Participant Funding Available November 12, 2020 — The Minister of Environment and Climate Change has determined that a regional assessment will be conducted in an area centred on the Ring of Fire mineral deposits in northern Ontario. The Impact Assessment Agency of Canada (the Agency) is inviting the public, Indigenous communities, and organizations to provide input to support the planning of the Regional Assessment in the Ring of Fire area. Participants may provide their input to the Agency in either official Rick Garrick/Wawatay language until January 21, 2021. Participants are encouraged to refer to The impacts of waterway diversions in the Matawa region were raised during Treaties Recognition Week the Ring of Fire regional assessment planning information sheet for on the Matawa First Nations Facebook page. additional details. Participants can visit the project home page on the Canadian Impact Assessment Registry (reference number 80468) for more options to submit Waterway diversion information. All input received will be published to the Registry as part of the regional assessment file. The Agency recognizes that it is more challenging to undertake meaningful public engagement and Indigenous consultation in light of the education important circumstances arising from COVID-19. The Agency continues to assess the situation with key stakeholders, make adjustments to engagement activities, and is providing flexibility as needed in order to prioritize the health and safety of all Canadians, while maintaining its duty to conduct meaningful for youth engagement with interested groups and individuals.
    [Show full text]
  • Water Levels and Hazard Lands
    LWCB Lake of the Woods Control Board Before You Build - Docks, Boathouses, Cottages Are you thinking of shoreline work or construction on your property? Then it is important to consider water levels. Find out more in the following sections: • Water Levels and Hazard Lands • Recommended Hazard Land Levels • How to Determine Levels on your Shoreline • Another Consideration; Erosion • Docks • Lake of the Woods • Winnipeg River (Ontario) • Nutimik Lake, Winnipeg River (Manitoba) • Lac Seul • English River Below Ear Falls / Pakwash Lake • References Water Levels and Hazard Lands Water levels typically move up and down seasonally and can also be quite different from one year to another. In particular, it is important to be aware that water levels can vary considerably over relatively short time periods in response to heavy rainfall or dry periods. On Lake of the Woods, while the "normal" annual variation in water level is only 0.6-0.9 m (2-3 ft) or less, levels through the years have varied over a 2.5 m (8.3 ft) range. On the Winnipeg River, water levels at some locations may vary up to 1.5 m (5 ft) fairly often and can rise 3.5 m (11.5 ft) or more when the dam at Kenora is fully opened. When building or developing, it is important to allow for water level fluctuations, recognizing that while the water level may normally be in a certain range, it can and will periodically rise much higher. Development in areas that are subject to periodic flooding will ultimately result in personal anxiety and property damage that could have easily been avoided.
    [Show full text]
  • Ontario Aboriginal Waterpower Case Studies Ontario 3
    Footprints to Follow Ontario Aboriginal Waterpower Case Studies Ontario 3 9 8 6 5 4 2 1 7 Welcome – Aaniin, Boozhoo, Kwey, Tansi, She:kon A core tenet of the Ontario Waterpower Association’s (OWA’s) approach to achieving its objectives has always been working in collaboration with those who have an interest in what we do and how we do it. The OWA has long recognized the importance of positive and productive relationships with Aboriginal organizations. An emergent good news story, particularly in waterpower development, is the growth of the participation of Aboriginal communities. Aboriginal communities have moved from being partners in a waterpower project to the proponent of the project. Waterpower projects are long-term ventures and investments. Projects can take years to bring into service and a decade or more to show a simple payback. However, once in service, a waterpower facility literally lasts forever. Aboriginal partners and proponents taking this long-term view are realizing the multigenerational opportunity to support local capacity development, training, job creation and community growth. Revenue generated from waterpower development can be reinvested in the project to increase the level of ownership, used for other community needs such as housing and infrastructure development, or investing in other economic opportunities. Ontario is fortunate to have significant untapped waterpower potential. In the north in particular realizing this potential will undoubtedly involve the participation of Aboriginal communities. Importantly, a successful industry/First Nations relationship can help establish a business foundation for further expansion. This catalogue aims to share first hand stories in proven Aboriginal communities’ waterpower developments.
    [Show full text]
  • Only Lodge on the Lake Accommodations in Ontario's
    Only Lodge on the Lake Accommodations in Ontario’s Sunset Country, Canada Do you want to be in a secluded, wilderness setting? Do you want more amenities than an outpost? Would you like an all-inclusive or guide service option? Then the following resorts are what you are looking for. Remote drive-in lodges are below and boat-to and fly-in lodges are on page 2. If you would like an outpost where’s there is only your party on the lake, visit Sunset Country’s fly-in outposts. Visit Sunset Country’s online accommodation finder to filter your choices even more. Lodge Plans Lake(s) Type of Fish Description Phone Email Amberlite Wilderness HK/RV Lake Weikwabinonaw walleye, pike, bass, perch The resort is a haven for nature lovers, outdoor enthusiasts and all who love to fish! It’s a 2 hr 807-933-5027 Resort drive from the Pigeon River border and less than a 2 hr drive from the Thunder Bay airport. Browns’ Clearwater HK/RV Clearwater West and White walleye, pike, bass,lake Browns’ is the only lodge on Clearwater West/White Otter Lakes. Camp near the beautiful 800-900-4240 West Lodge Otter Lakes + nearby lakes trout, perch, brook trout Caribbean-like beach. There’s everything you need on-site: gas, bait, laundry, lounge & more. Camp Quetico HK/AP Eva Lake + 40 nearby lakes walleye, pike, bass, trout The lodge is nestled in a beautiful wilderness setting on the shores of Eva Lake. They also 807-929-2266 /RV keep 105 boats on the 40 outlying lakes so you can try different spots for different species.
    [Show full text]
  • Marchington L. Area
    THESE TERMS GOVERN YOUR USE OF THIS DOCUMENT Your use of this Ontario Geological Survey document (the “Content”) is governed by the terms set out on this page (“Terms of Use”). By downloading this Content, you (the “User”) have accepted, and have agreed to be bound by, the Terms of Use. Content: This Content is offered by the Province of Ontario’s Ministry of Northern Development and Mines (MNDM) as a public service, on an “as-is” basis. Recommendations and statements of opinion expressed in the Content are those of the author or authors and are not to be construed as statement of government policy. You are solely responsible for your use of the Content. You should not rely on the Content for legal advice nor as authoritative in your particular circumstances. Users should verify the accuracy and applicability of any Content before acting on it. MNDM does not guarantee, or make any warranty express or implied, that the Content is current, accurate, complete or reliable. MNDM is not responsible for any damage however caused, which results, directly or indirectly, from your use of the Content. MNDM assumes no legal liability or responsibility for the Content whatsoever. Links to Other Web Sites: This Content may contain links, to Web sites that are not operated by MNDM. Linked Web sites may not be available in French. MNDM neither endorses nor assumes any responsibility for the safety, accuracy or availability of linked Web sites or the information contained on them. The linked Web sites, their operation and content are the responsibility of the person or entity for which they were created or maintained (the “Owner”).
    [Show full text]
  • Advice on Mercury Remediation Options for the Wabigoon-English River System
    Final report March 21, 2016 Advice on Mercury Remediation Options for the Wabigoon-English River System Final Report Prepared for: Asubpeeschoseewagong Netum Anishinabek (Grassy Narrows First Nation) - Ontario – Canada Working Group on Concerns Related to Mercury Prepared by: Dr. John Rudd Rudd & Kelly Research Inc. Reed Harris Reed Harris Environmental Ltd. Dr. Patricia Sellers University of North Carolina at Pembroke March 21, 2016 Final report March 21, 2016 Table of Contents Summary 1 Introduction ............................................................................................................................. 1 2 Study Objectives and Scope ..................................................................................................... 4 3 Why is Mercury Still Elevated in the Wabigoon-English River System? .................................. 5 4 Mercury Remediation – What Has Been Done Elsewhere? .................................................... 9 4.1 Existing Approaches to Reduce Mercury in Sediments ................................................. 10 4.2 Emerging Approaches to Reduce Mercury in Aquatic Systems ..................................... 15 5 Remediating the Wabigoon-English River System ................................................................. 20 5.1 Basis for Determining the Best Approach to Remediation ............................................ 20 5.1.1 Geographic Scale of Contamination ...................................................................... 20 5.1.2 Has Recovery Stalled Because
    [Show full text]
  • Canoe Trips in Canada
    Si Caiadla DEPARTMENT OF THE INTERIOR HON. THOMAS G. MURPHY - - Minister H. H. ROWATT. C.M.G. - Deputy Minister B. HARKIN - Commissioner National Par^s of Canada, Ottawa CANOE TRIPS IN CANADA Department of the Interior National Parks of Canada Ottawa, 1934 TEN COMMANDMENTS FOR CANOEISTS Build your campfires small, close to the water's edge on a spot from which the leaves and moss have been scraped away. Drown it with water when leaving, and stir the ashes with a stick to make sure no live coals are left. Leave your campsite clean. Bury all rubbish, bottles and cans. Never throw glass or tins in the water where others may bathe. Learn how to swim, and first aid methods. Do not sit or lie on bare ground. Never run a rapid without first making sure that it can be done with safety. Examine it carefully for logs, boulders and other obstructions. Two canoes should not run a rapid at the same time. Do not make your packs too heavy; about 40 pounds is a good average. Avoid crossing large lakes or rivers in rough weather. Make camp before dark. Erecting a tent, or preparing a meal by firelight, is not easy. Learn how to prepare simple meals over a campfire. Unless familiar with wilderness travel, never attempt a trip through uninhabited country without competent guides. Charts of the route and good maps of the sur­ rounding country are essentials. Canoe Trips in Canada To those who desire a vacation different from the ordinary, a canoe trip holds endless possibilities, and Canada's network of rivers and lakes provides an unlimited choice of routes.
    [Show full text]
  • Si Oitofs® CANOE TRIPS in ONTARIO
    Si OitofS® CANOE TRIPS IN ONTARIO Shooting Rapids on French River Department of the Interior CANADA HON. CHARLES STEWART W. W. CORY, C. M. C. Minister Deputy Minister National Development Bureau F. C. C. LYNCH, Director OTTAWA, 1930 TEN COMMANDMENTS FOR CANOEISTS Build your camp fires small, close to the water's edge on a spot from which the leaves and moss have been scraped away. Drown it with water when leaving, and stir the ashes with a stick to make sure no live coals are left. Leave your campsite clean. Bury all rub­ bish, bottles and cans. Never throw glass or tins in the water where others may bathe. Learn how to swim, and first aid methods. Do not sit or lie on bare ground. Never run a rapid without first making sure that it can be done with safety. Examine it carefully for logs, boulders and other obstruc­ tions. Two canoes should not run a rapid at the same time. Do not make your packs too heavy ; about 40 pounds is a good average. Avoid crossing large lakes or rivers in rough weather. Make a camp before dark. Erecting a tent, or preparing a meal by firelight is not easy. Learn how to prepare simple meals over a campfire. Unless familiar with wilderness travel never attempt a trip through uninhabited country without competent guides. Charts of the route, and good maps of the surrounding country are essentials. CANOE TRIPS IN ONTARIO It would be difficult to place one's finger on a map of Ontario without its being in proximity to a good canoe route.
    [Show full text]
  • Hydrological Dynamics in the Winnipeg River Basin, Manitoba by S
    GS-20 Hydrological dynamics in the Winnipeg River basin, Manitoba by S. St. George1 St. George, S. 2006: Hydrological dynamics in the Winnipeg River basin, Manitoba; in Report of Activities 2006, Manitoba Science, Technology, Energy and Mines, Manitoba Geological Survey, p. 226-230. Summary with particular configurations of Because hydrological conditions are the greatest the synoptic climatology. source of risk for hydroelectric production, recent studies describing significant declines in discharge during the 20th Study area and data century for many Canadian rivers are an understandable Most of the Winnipeg cause for concern. The Winnipeg River in northwestern River basin (WRB) is located at the eastern edge of the Ontario provides nearly half of the total flow into Lake Canadian Shield in northwestern Ontario, and can be Winnipeg and the Nelson River, and is the most important described as a rugged wilderness area with low, rolling component of the hydroelectric system generating power terrain and many large lakes. The Winnipeg River, in Manitoba. This study uses a network of long-term which also drains a small portion of northern Minnesota, discharge gauges to examine the frequency, severity and flows westward into Manitoba and empties into the causes of drought in the basin during the last one hundred south basin of Lake Winnipeg. The basin has an area of years. Extremely low annual flows in the Winnipeg River approximately 150,000 km2, and supports more than 100 are the product of widespread reductions in precipitation major lakes (including Lake of the Woods) that occupy during the previous summer and autumn, warm tempera- more than 11,400 km2 (Lake of the Woods Control Board, tures in spring and summer, and very little runoff delivered 2002).
    [Show full text]
  • Advice on Mercury Remediation Options for the Wabigoon-English River System
    Final report March 21, 2016 Advice on Mercury Remediation Options for the Wabigoon-English River System Final Report Prepared for: Asubpeeschoseewagong Netum Anishinabek (Grassy Narrows First Nation) - Ontario – Canada Working Group on Concerns Related to Mercury Prepared by: Dr. John Rudd Rudd & Kelly Research Inc. Reed Harris Reed Harris Environmental Ltd. Dr. Patricia Sellers University of North Carolina at Pembroke March 21, 2016 Final report March 21, 2016 Table of Contents Summary 1 Introduction ............................................................................................................................. 1 2 Study Objectives and Scope ..................................................................................................... 4 3 Why is Mercury Still Elevated in the Wabigoon-English River System? .................................. 5 4 Mercury Remediation – What Has Been Done Elsewhere? .................................................... 9 4.1 Existing Approaches to Reduce Mercury in Sediments ................................................. 10 4.2 Emerging Approaches to Reduce Mercury in Aquatic Systems ..................................... 15 5 Remediating the Wabigoon-English River System ................................................................. 20 5.1 Basis for Determining the Best Approach to Remediation ............................................ 20 5.1.1 Geographic Scale of Contamination ...................................................................... 20 5.1.2 Has Recovery Stalled Because
    [Show full text]
  • West English River
    West English River Interim Management Statement ©2004, Queen’s Printer for Ontario Printed in Ontario, Canada Additional copies of this publication can be obtained from the following offices: Ontario Ministry of Natural Resources Kenora District 808 Robertson St. P.O. Box 5080 Kenora, ON P9N 3X9 Telephone: (807) 468-2501 Ontario Ministry of Natural Resources Red Lake District P.O. Box 5003 Howey St. Red Lake, ON P0V 2M0 Ontario Parks Northwest Zone Office Suite 221D 435 James Street South Thunder Bay, ON P7E 6S8 (807) 475-1321 Approval Statement This Interim Management Statement will provide interim direction for the management of West English River Provincial Park until a comprehensive park management plan is prepared. This statement will provide the basis for the subsequent preparation of the West English River Provincial Park Management Plan. I am pleased to approve this Interim Management Statement for West English River Provincial Park. ______________________________________________________________ Tim P. Sullivan February, 2004 Zone Manager, Ontario Parks Northwest Zone PRELUDE The purpose of this Interim Management Statement is to identify: I park values, which are to be protected; II resource management prescriptions necessary to protect these values in their current state; and III restrictions, according to existing park policy, on use of natural resources within the park. This Interim Management Statement is not intended to replace a Park Management Plan. Rather it is intended to guide the use of natural resources and related activities within the park until such a time as a Park Management Plan is prepared. Park management planning for West English River Provincial Park will be scheduled as issues and development needs arise and as staff and resources become available.
    [Show full text]
  • Overview of Regulated Hydroelectric Facilities
    Filed: 2016-05-27 EB-2016-0152 Exhibit A1 Tab 4 Schedule 2 Page 1 of 13 1 OVERVIEW OF 2 REGULATED HYDROELECTRIC FACILITIES 3 4 1.0 PURPOSE 5 This evidence describes the regulated hydroelectric facilities. It also identifies the regulations, 6 agreements and programs key to these facilities. 7 8 2.0 DESCRIPTION OF REGULATED HYDROELECTRIC FACILITIES 9 A total of fifty-four OPG hydroelectric generating stations are subject to OEB regulation. 10 These facilities are operated and maintained by five Operations Groups: Niagara Operations 11 (formerly Niagara Plant Group), Eastern Operations (formerly Ottawa/St. Lawrence Plant 12 Group), Northeast Operations (formerly Northeast Plant Group), Northwest Operations 13 (formerly Northwest Plant Group) and Central Operations (formerly Central Hydro Plant 14 Group). The Operations Groups are responsible for operation and maintenance of regulated 15 hydroelectric stations as well as OPG’s thermal stations. 16 17 Hydroelectric facilities typically include: generating equipment (i.e., turbines, generators, 18 transformers, protections and controls, etc.), related civil works (powerhouses, dams, 19 headworks, spillways and water conveyance canals and tunnels), and the facilities required 20 to operate and maintain the generating stations (control rooms, work centres, and 21 headquarters). 22 23 Chart 1 presents information on OPG’s regulated hydroelectric stations. Filed: 2016-05-27 EB-2016-0152 Exhibit A1 Tab 4 Schedule 2 Page 2 of 13 1 Chart 1 2 Regulated Hydroelectric Facilities General Information 3 Plant Group Generating Number of In- Net In-Service Original Unit In- Station Service Units Capacity (MW) Service Dates Niagara Sir Adam Beck I 8 436 1922 – 1930 Operations Sir Adam Beck II 16 1,499 1954 – 1958 Sir Adam Beck 6 174 1957 – 1958 PGS DeCew Falls I 4 23 1898 DeCew Falls II 2 144 1948 Eastern R.H.
    [Show full text]