S Poplar River Bilateral 333.91 Monitoring M26prar Annual report of the 1982 governments of Canada, United States, 1982 ANNUAL REPORTr^T^ i^ocuments collection TEB 7 1990 MONTANA STATE LIBRARY 1515 E. 6th AVE. HELENA, MONTANA 59620 to the GOVERNMENTS OF CANADA, UNITED STATES, SASKATCHEWAN AND MONTANA by the POPLAR RIVER BILATERAL MONITORING COMMITTEE COVERING CALENDER YEAR 1982 PLEASE RETURN [arch, 1983 Montana state Ljbraty 3 0864 1004 5792 1 POPLAR RIVER BILATERAL MONITORING COMMITTEE REPORT TO GOVERNMENTS OF CANADA, UNITED STATES, SASKATCHEWAN AND MONTANA FOR CALENDAR YEAR 1982 MARCH, 1983 POPLAR RIVER BILATERAL MONITORING COMMITTEE Department of State Washington, B.C., United States Governor's Office, State of Montana Helena, Montana, United States Department of External Affairs Ottawa, Ontario, Canada Saskatchewan Environment Regina, Saskatchewan, Canada Gentlemen: The Poplar River Bilateral Monitoring Committee continues to address those responsibilities assigned to it by Governments under the Poplar River Cooperative Monitoring Arrangement dated September 23, 1980. Water quantity, water quality and air quality data of significance to impacts at the International Boundary were exchanged between countries on a quarterly basis. The monitoring information exchanged were in accordance with the locations, frequency and parameters detailed in the Technical Monitoring Schedule. The Committee has examined and evaluated the monitoring for 1982 and concludes the measured conditions fall within accepted objectives or norms for the parameters involved. No major trends are yet apparent at the International Boundary. This second annual report to Governments covers the calendar year 1982 , roughly corresponding to the second year of operation of the Saskatchewan Power Corporation 300 MW coal-fired thermal generating stations located on the East Poplar River. The results of the monitoring program are summarized and narrative descriptions relative to pre-project conditions, and guidelines for specific parameters that may have been developed as joint activities under International Joint Commission references are included. The Committee, in accordance with recommendations of the International Joint Commission has devised a flow-weighting scheme for boron and total dissolved solids. The results are presented in this report. Yours sincerely. R. C. AVERETT Chairman, United States Section ^■Q.9)cu^ D. A. DAVIS Chairman, Canadian Section E. GALLAGt Member, United State4_^ection ^^^^^^^> jt>S»- ^ DWARD Member, CaWdi^ Section TABLE OF CONTENTS Letter of Transmittal i 1982 Highlights 1 Introduction 3 Poplar River Power Station 5 Operation 5 Construction 5 Surface Water Quantity 6 Natural Flow 6 Minimum Flows 6 Reservoir Storage 7 On Demand Release 9 Surface Water Quality 9 Flow-Weighted Concentrations 9 Flow-Weighted Concentrations — Long-Term Objective 10 Flow-Weighted Concentrations — Short-Term Objective 10 Data Compatibility 10 East Poplar River at International Boundary 11 Boron 11 Total Dissolved Solids 15 Other Water Quality Characteristics 15 Cookson Reservoir 16 Ground Water Quantity 17 Coal Seam Dewatering Saskatchewan 17 Montana 17 Ground Water Quality 19 Montana 19 Saskatchewan 21 Ash Lagoon Quality and Quantity 22 Air Quality 24 Montana 24 Saskatchewan 25 Table 1 - Recommended Water Quality Objectives and Exceedences 12 Figure 1 - Mean Daily Discharge East Poplar River at International Boundary, 1982 8 Figure 2 - Long Term Flow-Weighted Concentrations for Boron and TDS 13 Figure 3 - Short Term Flow-Weighted Concentrations for Boron and TDS 14 Figure 4 - Water Level Decline in Hart Coal Seam 18 Figure 5 - Major Chemical Composition of Water in Montana Wells 20 Annex 1 - Poplar River Cooperative Monitoring Arrangement Annex 2 - Poplar River Cooperative Monitoring Arrangement - — Technical Monitoring Schedule Annex 3 - Metric Conversions 11 '^*-' ■ ; 1982 HIGHLIGHTS The first 300 MW coal-fired electrical generating unit at the Saskatchewan Power Corporation Poplar River Power Station began commercial operation in July 1981. The quarterly exchange of monitoring information collected by both countries was carried out during I982. In general, the frequency, location and type of information exchanged met the requirements identified by both countries in the Technical Monitoring Schedule. The United States received a continuous discharge in the East Poplar River throughout the year and in addition was entitled to an on demand release of up to 1,230 cubic decameters between June 1, 1982 and May 31, 1983. As of December 31, 1982 this release had not been requested. The snowmelt runoff was much above normal in I982 and resulted in large spill volumes from Cookson Reservoir. Recorded flow below Cookson Reservoir was less than the minimum discharge recommended by the International Joint Commission (IJC) 19 percent of the time. The ground-water drawdown associated with coal seam dewatering was shown to have no impact closer than one-half mile north of the International Boundary. Boron and total dissolved solids (TDS) vary widely in the ground water with generally poorer quality water in the lower aquifers. Boron and TDS in the East Poplar River were below the long-term and short- term objectives recommended to Governments by the IJC. There was no discern- ible trend from pre-project conditions. Water quality met the objectives for other parameters recommended by the International Poplar River Water Quality Board to the IJC with one exceedence being observed for total zinc. Water quality in piezometers near the Saskatchewan Power Corporation ash lagoons was highly variable, with questionable results reported. Steps are proposed by the Committee to improve results. 1. Ground-water seepage from the ash lagoon was computed to be less than the construction standards established by Saskatchewan. Plant stack emissions did not cause or contribute to violation of Montana, Saskatchewan and the United States ambient air-quality standards. 2. INTRODUCTION The Poplar River Bilateral Monitoring Committee was authorized by the Governments of Canada and the United States under the Poplar River Cooperative Monitoring Arrangement dated September 23, I98O. A copy of the Arrangement is attached to this report as Annex 1. The Committee is composed of representatives of the Government of Canada, Province of Saskatchewan, Government of the United States of America, and State of Montana. In addition to the representatives of Governments, two ex-officio members who are local representatives of the State of Montana and Province of Saskatchewan participate in the activities of the Committee. During I982 the members and ex-officio members of the Committee were: Mr. R. C. Averett Mr. D. A. Davis U.S. Geological Survey Environment Canada Co-chairman, U.S. Section Co-Chairman, Canadian Section Mr. T. E. Gallagher Mr. G. W. Howard Governor's Office Saskatchewan Environment Montana Member, U.S. Section Member, Canadian Section Mr. C. W. Tande Mr. J. R. Totton Daniels County Commissioner Reeve, R.M. of Hart Butte Ex-Officio Member, Montana Ex-Officio Member, Saskatchewan The Committee met in Regina, Saskatchewan in March I982 to prepare the 1981 Annual Reports to Governments. An ad hoc technical group met in Denver, Colorado in December I982 for the purpose of reviewing monitoring information, quality assurance programs, and the progress to date on development of flow- weighting procedures. The contents of the I982 report to Governments was also discussed. The responsibilities of the Committee include an ongoing quarterly exchange of the results of water quantity, water quality and air-quality monitoring programs being conducted in Canada and the United States at or near the International Boundary. The monitoring program is in response to the con- struction of Saskatchewan Power Corporation's coal -fired thermal generating 3. station near Coronach, Saskatchewan and to the concerns of transboundary impacts. The exchange of monitoring information was initiated with the first quarter of I98I, and is an expansion of the informal quarterly information program instituted between Canada and the United States in 1976- The data exchanged are documented in a Technical Monitoring Schedule attached as Annex 2. The data are available for public review at agencies of the parti- cipating governments or from Committee members. The Committee is also required to prepare an annual report to Governments which draws to the attention of Governments any definitive changes in the monitored parameters based on evaluation of the data made available by both countries. The Committee has decided to report to Governments on a calendar year basis. The first report covered I98I and was issued in March I982. Issuance of this I982 report roughly corresponds to the second year of operation of the first 300 MW Unit of the coal-fired thermal electric gener- ating station operated by Saskatchewan Power Corporation on the East Poplar River near Coronach, Saskatchewan. Subsequent sections of this report summarize the findings and comment on the results in relation to pre-project conditions, and to objectives or standards recommended 'by the International Joint Commission. Another responsibl I tiy of the Committee is to review the adequacy of the monitoring programs in both countries and make recommendations to Governments on the Technical Monitoring Schedule. The Technical Monitoring Schedule proposed for I983 is attached as Annex 2, and the concurrence of Governments with the proposed Schedule Is requested. It can be expected that the Committee will continue to review and propose changes to the Technical Monitoring Schedule In future years as Information requirements change. POPLAR RIVER POWER STATION Operation The first 300 MW unit was commissioned in June 1981 and commenced commercial operation July 1, I98I. The unit operated for the full twelve months of 1982. The station's electrical production statistics for the period were: Hours of operation 7310 Gross MWh generated l.Sy't.SOO Availability (hours) 83. '♦S^ Capacity Factor 76.6?^ Number of startups 35 Coal consumed 1,689,624 tonnes Oil consumed 5, 85'*, '•83 litres Failures in the ash-collection system resulted in eight spills; the last of which occurred on August 6, I982. With the exception of one case when an estimated two cubic meters entered the reservoir, all ash spills were contained on site. Spill containment structures were completed in the fall and are now operational. Construction Construction of the second 300 MW unit at the Poplar River Power Station was at a virtual standstill from May to December I982 due to a construction trades strike. Boil out and acid clean for the second unit was scheduled for February 1983; first fire on coal May 1983; and commercial operation is scheduled for July 1983. 5. SURFACE WATER QUANTITY Natural Flow The natural flow in the Poplar River basin was well above normal in 1982, assuming the recorded flow of the Poplar River at International Boundary is a good indicator of basin runoff conditions. Snow accumulation prior to runoff was above normal, and combined with a late melt and rapid warming, resulted in a maximum instantaneous discharge of the Poplar River that was the 5th highest on record; 113 cubic meters per second (m /s) on April 13, 1982. The volume of runoff in the Poplar River between March 1 and October 31, 1982 was 29,500 cubic decametres (dam ) compared to a long term mean volume of 3 17,200 dam . The recorded runoff volume of the Poplar River during the March 1 to May 31 period, used as an indicator in setting the minimum and on demand releases in the East Poplar River under the International Joint Commission apportionment recommendations, was 27,^00 dam . Minimum Flows Based on the apportionment recommendations of the International Joint Commission, the United States would be entitled to a minimum discharge of 0.028m /s from 3 3 January until May 31; O.O85 m /s from June 1 until August 31; and 0.057 m /s from September 1 to December 31, 1982 on the East Poplar River at the Inter- national Boundary. This stream regime is designed to enhance instream environ- mental values during the summer period in years when spring runoff is high. The minimum discharge in the East Poplar River during the period January 1 to ■J May 31 was 0.023 m /s, with this flow occurring from January 16 to January 25. During the January to May period the recorded flow was marginally below the recommended minimum flow for 46 days, all under ice conditions. Cold tempera- tures during this period caused large accumulations of ice in the channel between Cookson Reservoir and the International Boundary which reduced flows to less than what had previously been measured. The flow was below the recom- mended minimum for 2k days in August when a discharge of 0.076 m /s was recorded on August 6 and August 9 to 31. The minimum flow during the period September 1 3 to December 31, 1982 was 0.076 m /s, well above the recommended flow of 0.057 m /s for that time period. During the year the recorded flow was below the recommended minimum flow approximately 19 percent of the time. However, the average flow for each of the three periods exceeded the recommended minimums. The hydrograph of the East Poplar River at the International Boundary is depicted in Figure 1, along with the International Joint Commission recommended minimum flows. As can be noted from the hydrograph, there was a large and 3 sustained snowmelt runoff during I982. Of the total volume of 29,000 dam 3 recorded for the year, 22,500 dam occurred in April. Reservoir Storage Cookson Reservoir Was at elevation 751.867 m on January 1, rising to 753-026 m during the peak of the snowmelt runoff on April 15. The reservoir level was held steady, near full supply levels for several months with the highest level for the year recorded on June 2 at elevation 753-160 m. The reservoir declined slightly over the summer months and the reservoir level at year end was 752.681 m. The corresponding volumes of stored water were: Full Supply Level 43,^00 dam^ (elevation 753-000 m) 3 January 1 35,000 dam April 15 't3,600 dam^ " 3 June 2 44,700 dam-^ 3 December 31 41,000 dam"^ 3 The increase in storage over the year was 6,000 dam , with only small reservoir drawdown in the summer and fall, primarily because coal-seam dewatering dis- charge entering Cookson Reservoir through Girard Creek was of sufficient volume to help offset evaporative losses and releases from the reservoir. Because of the near full supply level conditions at the end of the year, the reservoir will not have a major modifying influence on the I983 spring runoff in the East Poplar River. r 100-*- 0.20 opporfionment recommendationy (or minimum (low- ,, 0.028 mVi—,^r" "*-0.oe5 nfitx „ „.- ,, ^ — ' ,0.057m'/j- JAN I FEB I MAR I APR | IVIAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC 1982 - EAST POPLAR RIVER AT INTERNATIONAL BOUNDARY Figure 1 : Mean daily discharge of the East Poplar River at International Boundary. On Demand Release The 1982 runoff volume on the Middle Fork of the Poplar River at the Inter- national Boundary from March 1 to May 31 was 27, ^^tO dam . Based on the apportionment recommendations of the International Joint Commission, the United States would be entitled to an on-demand release of up to a maximum of 1,230 dam-^ during the period from June 1, I982 to May 31, I983. As of December 31, 1982 no request had been received for this on-demand release. All past commitments for on-demand releases have been met. SURFACE WATER QUALITY Surface water quality has been assessed using the data exchanged under the terms of the Technical Monitoring Schedule. Additional data on conductivity, collected by the United States Geological Survey from March to October, was used in regression equations for determining flow-weighted concentrations. Flow-Weighted Concentrations ■ In order to assess compliance of the East Poplar River quality with the recommended IJC objectives for boron and TDS, flow-weighted concentrations must be computed. The IJC report recommends: (1) a long-term objective computed as a five-year moving flow-weighted concentration, and (2) a short- term objective for any given year computed as a three-month moving flow-weighted concentration. The objectives apply to the March to October period which the IJC determined to be the maximum time interval over the annual cycle in which water may be used for irrigation purposes. Flow-weighted concentrations have been computed using the following concept: ^0 = C,Q, + C2O2 + C3Q3 + . . . C^Q^ Q, + Q2 -^ O3 +. . . . 0^ where C^. = Flow-weighted concentration C. = Instantaneous concentration at mean daily flow Q. Q, = Mean daily flow for C, n = Last observation for the period of record Consideration was given to using different combinations of daily and montlily flows, instantaneous and mean concentrations, and advancing the time period for computing the moving averages either by one day, month or year. The techniques used and the results can be obtained by writing the Canadian Chairman of the Poplar River Bilateral Monitoring Committee. Flow-Weighted Concentrations for Comparison to the Long-Term Objective The Committee has adopted the approach that for the purpose of determining compliance of the East Poplar River Water Quality with the recommended IJC long-term objective, the data are best presented as a five-year moving average, advancing one month at a time. It should be noted that in addition to the instantaneous sample data, daily boron and TDS concentrations have been calculated using a regression with daily electrical conductivity values. Eventually, the long-term average will be computed using the approximately 240 data points from each annual eight-month irrigation period rather than from the present sixteen (tVvo samples per month). Flow-Weighted Concentrations for Comparison to the Short-Term Objective To determine compliance of the East Poplar River boron and TDS quality with the recommended short-term IJC objective, the Committee adopted the approach of computing three-month (90 day) moving flow-weighted concentrations advancing one month at a time while dropping the first month in the time period. This method has been applied to the entire period of data record and was based on data from instantaneous samples. The only exception to this was during 1982, when calculated daily boron and TDS were obtained using a regression with electrical conductivity. These 1982 calculated concentrations were then used to compute the short-term (90 day) moving flow-weighted concentrations while advancing one day at a time throughout the period March to October. Data Compatibi 1 i ty Environment Canada and the United States Geological Survey improved their knowledge on data compatibility by exchanging and splitting water samples 10. during June 1982. For most relevant parameters reported there was agreement between agencies. The TDS and boron data compared extremely well, but some discrepancies in pH and electrical conductivity results remained; the reason for these discrepancies are being investigated. The agencies will be repeating the entire intensive quality-control project, with some minor improvements in project design during I983. East Poplar River at international Boundary Table 1 presents the water quality objectives recommended by the IJC and the larger set of objectives recommended to the IJC by the International Poplar River Water Quality Board. The corresponding number of samples collected for the East Poplar River near the International Boundary by governments are also shown in Table 1 . t' Boron The two principle data bases (USGS and Environment Canada) report dissolved boron, although it is believed the IJC recommended objective is for total boron. The Committee has taken the position that total and dissolved boron concentrations are essentially equal and is utilizing the more commonly reported dissolved boron for the purpose of monitoring and determining com- pliance with the IJC recommended objectives. The long-term five-year moving flow-weighted concentration is presented in Figure 2. Note that each point is plotted as the midpoint of a five-year period, advancing one month at a time throughout the data set, which consist of March to October data. The five-year moving flow-weighted concentrations for boron have not exceeded 1.5 mg/L, which is below the recommended long-term objective of 2.5 mg/L. The sharp decline occurring in 1979 resulted because of the above normal snowmelt runoff in April I982, which had a boron level of 0.73 mg/L. The three-month moving flow-weighted concentrations for boron have not exceeded the recommended short-term objective of 3^5 mg/L for any given year as shown in Figure 3. The trend in each annual curve is similar. As autumn approaches, the boron three-month flow-weighted concentrations gradually rise as the 11 Table 1 .--Recommended water-quality objectives and exceedences and the I982 sampling program (units in milligrams per liter except as otherwise noted) . No. of samp les (1982) Constituent Objective USA Cana da Exceedences Objectives recommended by IJC to governments 7 18 (Note 5) *Boron - total Note 1 Nil TDS Note 1 7 18 (Note 5) Nil Objectives recommended by Board to IJC Aluminum 0.1 5 Nil Nil Ammonia - un- ionized 0.2 7 12 Nil Cadmium - total 0.0012 k 12 Nil Chromium - total 0.05 if 12 Nil Copper - dissolved 0.005 5 Nil Nil Copper - total 1.0 4 12 Nil "Fluoride - total 1.5 7 12 Nil Lead - total 0.03 i» 12 Nil Mercury - dissolved 0.0002 k 12 Note 6 Nil (Can) Mercury - whole fish (mg/kg) 0.5 Nil 1 Nil - Nitrate - N 10.0 7 12 Nil Dissolved oxygen Note 2 7 12 Nil Sodium adsorp. ratio 10.0 7 12 Nil ^Sulphate 800.0 7 12 Nil Zinc - total 0.03 k 12 1/16 Temperature (°C) Note 3 12 12 Nil pH Note 4 7 12 Nil Col iform - fecal (No. 7100 mL) 2,000/100 mL Nil 1 12 Nil - total 20,000/100 mL Nil 1 12 Nil *dissolved form of parameter was determined. Note 1. March to October, long-term average of flow-weighted concentrations should be < 2.5 mg/L for boron, and < 1,000 mg/L for TDS with a maximum flow- weighted concentration not to exceed 3-5 mg/L for boron and 1,500 mg/L for TDS for any three-month period during this time. 2. 5.0 (minimum April 10 to May 15) '♦•O (minimum rest of year). 3. Natural (April 10 to May 15), less than 30 (rest of year). k. 6.5 (minimum) and less than 0.5 above natural. 5. Total boron data provided by Saskatchewan Environment are included with the Environment Canada dissolved boron values. The respective TDS data bases have also been combined. 6. The USGS mercury data are being authenticated because of potential sample contamination. The USGS data are, therefore, not available for interpretation. 12. 1600- 1440- 1280- 1120- tJC Rieommindtd Long Ttrm Objtetiv* (1000 mg/L) C^ 960- 9 e eoo- • •»•• ' 2! «*o- ....• 480- 320- leo- iAM^i*,« lllllllllllllll lllllll lllllll Illllllllllllll 1975 1976 1 1977 1978 1979 1980 1 1981 lllllll 1982 4.0- S.t 2.8- -I 2.4 >«» 9 E 2.0- 2 I.6H O 1-2 O 0.8- Q.4 0.0 IJC Rtcommtndtd Long Term 0b|«eliv* (2.3 mg/U NAMJJAS0|lllllll|!llllll||llllll|lllllll|llll|ll| 1975 I 1976 I 1977 I 1978 | 1979 I 1980 I 1981 TTrm 1982 Figure 2: Five-year long-term moving flow weighted concentrations for - ;>>■ boron an»o||llllll|lllllll|IIUIII|lllllll 1975 I 1976 I 1977 i 1978 I 1979 nrm 1980 rrm / V 1981 nrm 1982 4.0- 3.6 3.2 2.8 2.4 2.0 1.6 1.2 0.8 0.4 0.0 - •; - IJC Raeommtndtd Short Torm Objtetivt (3.9m«/L) • •••• ,. . •• ■ ^ •• • / • .. / • • •y XAMJJA.ollllllllllllllllllllllll Illllll lllllll lllllil lllllll 11975 1 1976 1 1977 1 1978 1979 1980 1981 1982 Figure 3: Three-month short-term moving flow weighted concentrations for boron and TDS in the East Poplar River near the Inter- '' national Boundary, computed annually for the period of March to October, 1975 to 1982. Th& tviangles plotted in 2982 were derived from estimated daily concentrations obtained by regressing with daily conductivities. For the preceding years^ the plotted points were derived from the results of the regular sampling program (see text for further details). 14. ground-water contribution to streamflow increases. The I982 calendar year data are also presented using daily boron concentrations estimated using 2 the regression equation: Boron = 0.001^7 x Conductivity - 0.2538; r = 0.82. Based on sample data, the maximum boron concentration during I982 for the irrigation period (March through October) was 2.0 mg/L on March 9th. For comparison, the maximum concentration was 1.93 on March 3 and 19, 1982 using the regression equation. The maximum sample concentration of boron for the entire year was 2.2 mg/L on February 11, I982. Total Dissolved Solids The long-term five-year moving average for TDS ranged from 529 to 753 mg/L, never exceeding the recommended long-term objective of 1,000 mg/L (Figure 2). The maximum sample concentration (during the irrigation period) during I982 was 1,050 mg/L recorded on September 27, whereas the maximum for the entire year was 1,210 mg/L recorded on February 11, I982. Based on the available data, the recommended short-term objective of 1,500 mg/L has not been exceeded during 1975 to 1982. The maximum three-month flow-weighted concentrations for the period of record occurred during the period of June to October I98O when a level of 971 mg/L was measured. During the irrigation period of I982, the maximum three-month flow-weighted concentration was 905 or 891 mg/L depending on whether the method of computation used sample data or estimated concentrations, respectively. The regression equation for estimating daily total dissolved solids concentrations is: TDS = 0.647^ (conductivity) - 4.018; r^ = 0.9^ Other Water Quality Characteristics With the exception of zinc, the multi-purpose objectives recommended by the IJC International Poplar River Water Quality Board for the East Poplar River near the International Boundary were achieved during I982 (Table 1). The concentration of zinc exceeded the recommended objective of 0.03 mg/L in one of sixteen samples. The mercury content of the river is still uncertain because the two principle data bases do not compare. The Environment Canada data indicated that the mercury content was at or below the analytical detection limit of 0.02 ug/L. The United States Geological Survey data appear 15. to reflect possible sample contamination and have been withdrawn until their reliability is determined. Investigations into identifying possible sources of contamination are being conducted by the United States Geological Survey. Uranium data obtained by the Environment Canada show that concentrations in the East Poplar River near the International Boundary are typical of background concentrations found in surface waters. The concentrations are below the Canadian Drinking Water Quality Guideline of 20 ug/L. An assessment of the metal characteristics of the river ecosystem can be improved utilizing collaborative biological data. Environment Canada plans on conducting studies of metals in water, sediment and biota of Cookson Reservoir during 1983. It is interesting to note that during low-flow periods, the East Poplar River water quality is influenced by ground-water inflow in the area immediately below the reservoir. This is substantiated by the higher sulphates in the East Poplar River than what was observed in the reser- voir itself during these low-flow periods. A typical example is the August sulphate concentrations of 292 and 108 mg/L at the International Boundary and Cookson Reservoir sites, respectively. Cookson Reservoir Samples collected quarterly by Saskatchewan Environment indicate that the TDS content of Cookson Reservoir discharge was predominantly less than 1,000 mg/L. The boron concentrations approached 1.85 mg/L during February and were as low as 0.73 mg/L during May. There was variability in chemical characteristics between the upper and lower ends of the reservoir. The rather sparse data set does not, however, permit an evaluation of the variations between the different sampling sites on the reservoir. No unusual quality characteristics have been observed. Cookson Reservoir remains a Fish-For-Fun zone, largely because no information concerning mercury in fish were collected in 1982. Environment Canada intends to conduct a comprehensive survey during 1983 to determine the levels of mercury (and other metals) in fish, water, and sediment within the reservoir ecosystem. 16. GROUND WATER QUANTITY Coal Seam Dewatering Saskatchewan Data on ground-water levels were exchanged for five piezometers in Sasillim AA-HNOs A 0(201 SICirMflltH CaleulattO I 05106 loron-atli CoIourlMtrtc 4«002 Cldalin AA-HN03 , 20103 Ctlcliaa AA-d1r«ct « 0«X1 CirbonatM Calculattd 17203 Oilorldt Colour! metric A 2iaaac>r Xathod 0O410 kikAi.isizr-ts.tU elacc. Tttradon WtlO AikAiiiittr-1'b eiaet. Tlcradoa OtlM UuBloua-dtia AA M. A^Moi«-fr«« Calolata^ 00410 Aaaosts-Tocml CoiorlMcrle 0U4I3 Amaaim*<3Tt .t-toc CaUrlaacrlc 01000 *rs«nlc-4U« rlaaalaaa AA 01002 AraaDle-cot/r«c rlaaalaaa AA OIOIO SarTlllua-41aa AA 01012 Urrlllurcoc/rae AA-parauXfaca U1U20 Sofoa-41aa CoLorlaacrle 01023 Cadalu«-41aa AA 01021 CMlatua-coc/rae AA-paraulfaca 00)13 Calelua AA OU«IIO Carbov-cot Org Uac Oatdactan UOMO Chio nda Colonacrte UIOJO ChrtMliiB-dtaa AA 01034 CMaalua-»c/rac AA-pacauifaea oooao . Colar eiaccre«acrle> vtaual 0OU93- Coarfucclvlty Uhaacicona Srldga OlOtO Cop»«r--r|air-dlaa ulBklar/aacar 70507 P-Ortho-eot Calorlaacrlc 00*00 P" ClactroMCrtc oo««s PhoaplMnia-eoc Colorlaacrlc 00913 focaaalua AA M1H s*> Calculacaa out) Salaatuv^laa AA 01U3 Salantu«-toc/rae AA-paraulfaca .««3J Silica Colorltaacrle 0O930 SMlua AA 0014) SuXtaca Colorlaacrle 70301 TBS Calculacad 000 10 ra«p Wacar Toluaaa/aaalcar 00020 Ta« ur Toluana oao7« TucbUlcr HapNaliwacne 01090 Zlnc-aiaa AA 01092 Sloe eae/cac AA-paraulfaca *i:ow>t« tcoraca aotf raerlaval sraca« - USCS sruoUi C - coaclnuouai 0 • aailir: h - aonchir: SM - Enlislon PUsiM ICP Calclua Enlsston Plasma Carbonatts Elcctronctrlc Titratfon Chloride Ion Chromato- graphy Conductivity Whaatstone 8rdg Copp«r-d1ij Emission Plasma Sampla collection Is semi-annually for all locations Identified above. The analytical method descriptions are those of the Montana Bureau of Mines and Geology Laboratory where the , samples are analyzed. ; > O09S0 01046 01049 01130 009ZS 01056 01060 00630 00400 00935 01145 0O9S5 00930 01080 00445 22703 00190 70301 Fluorld* Ion Chromatography Iron-dIss Emission Plasma, ICP Laad-diss Emission Plasma, ICP llthlun-diss Emission Plasma, ICP Hagntslui Emission Plasma, ICP Hangantse-diss Emission Plasma, ICP Nolybdeaum Emission Plasma, ICP NItrata Ion Chromatography pH Eleetromatrlc Potassliaa Emission Plasma, ICP Seltnlua-dtss AA Silica Emission Plasma. ICP Sodium Eiolsslon Plasma. ICP Strontlum-dlts Emission Plasma, ICp Sulphatt Ion Chromatography Uranium fusion Flurometrlc ZInc-dIss Emission Plasma, ICP TDS Calculated *Conput«r storage «nd rttrlcval systirti • United States 'Geological Survey S>abols: AA-Ataalnoabsorptlon; ICP-InductlvelyCoupIed Plasma Unit; 2R GROUNDWATER QUALITY MONITORiNG - 29 - GROUNDWATER LEVELS TO MONITOR POTENTIAL DRAWDOWN DUE TO COAL SEAM DEWATERING Responsible Agency: United States Geological Survey No. on Map Sampling 2 to 11 Determine water levels quarterly Note: All wells will be monitored on a quarterly basis for levels in 1982. - 30 ■^ GROUNDWATER PIEZOMETERS TO MONITER POTENTIAL DRAWDOWN DUE TO COAt SEAM DEWATERING 31 - No. on Map 1 AMBIENT AIR QUALITY MONITORING Responsible Agency: State of Montana Air Quality Bureau Location International Boundary Parameters Sulfur Dioxide, Total Suspended Particles, Visibility Wind, Speed and Direction Sampling Frequency and Reporting Hourly averages Summary statistics (24-hour for TSP) Hanrahan Ft. Peck Reservation Scobey Sulfur Dioxide, Total Suspended Particles Sulfur Dioxide Total Suspended Particles Total Suspended Particles Hourly averages Summary statistics (24-hour for TSP) Hourly averages Summary statistics (24-hour for TSP) 24-hour average for TSP METHODS Sulfur Dioxide Total Suspended Visibility • EPA Equivalent Mehtod EQSA-0276-009 EPA Reference Method CFR Title 40 Part 50 Appendix B (State of Montana QA Manual Section 1.1.10 and 1.2.10) 24-hour sample once/6 days State of Montana QA Manual Section 1.1.7 and 1.2.7 (Nephelometer) - continuous 32 - U.S.A- AMBIENT AIR QUALITY MONITORING - 33 - ANNEX 3 METRIC CONVERSIONS METRIC CONVERSION FACTORS 4( 347 m^ = 0. ,4047 ha 1. ,8F° 0. ,3937 in. 0. ,155 in^ 1000 m^ = 0. ,8107 ac- ■ft ac-ft = 1,233.5 m^ = 1.2335 dam^ ac C° cm cm dam ft^ = 28.3171 X 10"^ m^ ha = 10,000 m^ = 2.471 ac hm = 100 m = 328.08 ft hm^ = 1 X 10^ m^ Igpm = 0.0631 L/s in = 2.54 cm kg = 2.20462 lb = 1.1 x 10"^ tons km = 0.62137 miles km^ = 0.3861 mi^ L = 0.3532 ft^ = 0.21997 I. gal. = 0.36420 U.S. gal L/s = 0.035 cfs = 13.193 Igpm = 15.848 U.S. gpm m = 3.2808 ft m^ = 10.7638 ft^ vr? = 1000 L = 35.3144 ft^ = 219.97 I. gal = 264.2 U.S. gal n?/s = 35.314 cfs mm = 0.04 ft tonne = 1000 kg = 1.1023 ton (short) U.S. gpm = 0.0758 L/s - 1