AQU QUATIC TIC EF EFFECT FECTS S MO MONI NITORING ORING PR PROGR OGRAM MVLWB Technical Session Snap Lake Mine Final Closure, and Water Licence and Land Permit Renewal July 16 to 18, 2019 PUBLIC LIC PRESEN ENTATION ION
OUTL TLINE • Overview of AEMP • Proposed Changes • Analyses (benchmarks, trends) • Reporting 1
AQUATI TIC EFFECTS ECTS MONITORING ORING PROGRAM OGRAM (AEMP) P) - OVERVIEW EW Stressors of Potential Concern: 70,000 Operations ECM Closure and Post-Closure • Chemical 60,000 Daily Effluent Discharge (m 3 ) - Operations: continuous pumped Stopped Pumping Water discharge (increasing over time) from Underground to 50,000 Surface - ECM (starting 2017): seasonal pumped discharge; RO 40,000 treatment (starting 2018) 30,000 - Closure: seasonal pumped discharge 20,000 - Post-closure: seasonal passive overflow 10,000 • Physical 0 - Sediment release from 2004 2008 2012 2016 2026 2006 2010 2014 2018 2020 2022 2024 2028 uncontrolled runoff - Shoreline habitat alteration Year (Monitored Data) Year (Predictions) 2
AQUATI TIC EFFECTS ECTS MONITORING ORING PROGRAM OGRAM (AEMP) P) – PROPO POSED ED CHANGES GES Compone onent nt Operati ation ons ECM Closur ure e Post-clos Po losure ure Water Quality Yes Yes Yes (Annual) Yes (Annual)** Toxicity Yes Yes Yes (Annual) Yes (Annual)** Sediment Yes Yes Yes (Once) - Plankton Yes Yes Yes (Once) - Benthos Yes Yes Yes (Once) - Fish Health Yes Yes Yes (Once) - Fish Community Yes Yes - - Fish Tasting Yes Yes -* - Downstream Program Yes Yes Yes (Annual) Yes (Annual)*** Special Studies Yes - - - * = Will occur as necessary to verify results of fish health and fish tissue chemistry programs ** = Monitoring continues for at least 3 years and then until concentrations stabilize or decrease. *** = Monitoring continues until concentrations stabilize or decrease. Reviewe wer comment nts: • GNWT-70, GNWT-165, ECCC-6, GNWT-108, MVLWB-8, MVLWB-9, MVLWB-18, MVLWB-21: Reduction in sampling frequency 3
AQUATI TIC EFFECTS ECTS MONI NITORING ORING PROGRA OGRAM M (AEMP) MP) – PROPOS POSED ED CHA HANGES NGES – MIXIN XING G ZONE What at Phase Frequenc ncy Timing ing Number of Statio ions ns 2 stations around each discharge location: Water Qualit lity and Toxicit ity: Annually Water Qualit lity: open- Water Quality Closure water, monthly during • SNP 02-20e and SNP 02-20f and Toxicity (Active) discharge (Mixing Zone) • SNP 02-20h and SNP 02-20i Toxicit ity: open-water, once • SNP 02-20j and SNP 02-20k during discharge 2 stations around each discharge location: Water Qualit lity: Once every 3 years Water Qualit lity: ice- covered, once • SNP 02-20e and SNP 02-20f • SNP 02-20h and SNP 02-20i • SNP 02-20j and SNP 02-20k 2 stations around each discharge location: Post-closure Water Qualit lity and Toxicit ity: Annually, until Water Qualit lity and water quality in Snap Lake has stabilized Toxicit ity: open-water, once • SNP 02-20h and SNP 02-20i (Passive) or concentrations are decreasing • SNP 02-20j and SNP 02-20k 2 stations around each discharge location: Water Qualit lity: Once within the first three Water Qualit lity: ice- years of Post-closure covered, once • SNP 02-20h and SNP 02-20i • SNP 02-20j and SNP 02-20k Reviewe wer comment nts: GNWT-70, GNWT-165, ECCC-6, GNWT-108, MVLWB-8, MVLWB-9, MVLWB-18, MVLWB-21: Reduction in sampling frequency • 4
AQUATI TIC EFFECTS ECTS MONI NITORING ORING PROGRA OGRAM M (AEMP) MP) – PROPOS POSED ED CHA HANGES NGES – WATER ER QUALI ALITY Where Phase Frequenc ncy Timing ing Number of Statio ions ns Main Basin: 5 Snap Lake Closure Annually Open-water, NWA: 2 (1 field measurements only) (main basin, (Active) once NEL: 4 ( 1field measurements only) NWA), Northeast Lake Once every 3 years ice-covered, Main Basin: 5 once NWA: 2 (1 field measurements only) NEL: 4 (1 field measurements only) Main Basin: 3 Post- Annually, until water quality in Snap Lake Open-water, NWA: 1 closure has stabilized or concentrations are once NEL: 4 (1 field measurements only) (once within first three years) (Passive) decreasing Main Basin: 3 Once within the first three years of Post- ice-covered, NWA: 1 closure once NEL: 4 (1 field measurements only) Downstream Closure Annually ice-covered, LCB outlets: 2 (Active) once KING01: 1 MacKay Lake: 2 Open-water, once, at LCB outlets Post- Annually, until downstream TDS ice-covered, LCB outlets: 2 closure concentrations have stabilized or are once MacKay Lake: 2 5 (Passive) decreasing
AQUATI TIC EFFECTS ECTS MONI NITORING ORING PROGRA OGRAM M (AEMP) MP) – PROPOS POSED ED CHA HANGES NGES – SEDIMENT ENT AND BIOL OLOG OGY Phase Compo ponen ent Freque quency cy Lakes kes Closure Sediment One close-out program Snap Lake (discontinue SNP (Active) Quality* stations) and Northeast Lake Plankton* One program - if plankton community is within normal range and returning to Snap Lake and Northeast Lake baseline conditions, no additional programs Benthic One program - if benthic invertebrate community is within normal range and Snap Lake and Northeast Lake Invertebrates* returning to baseline conditions, no additional programs Fish* One program - if fish health parameters within normal range and returning to Snap Lake and Lake 13 baseline conditions, no additional programs Post- No program unless triggered by water quality and/or toxicity results closure (Passive) *Following ECM study design Reviewe wer comment nts: 6 • GNWT-70, GNWT-165, ECCC-6, GNWT-108, MVLWB-8, MVLWB-9, MVLWB-18, MVLWB-21: Reduction in sampling frequency
□ AQUATI TIC EFFECTS ECTS MONI NITORING ORING PROGRA OGRAM M (AEMP) MP) – SNAP LA LAKE SAMPLI PLING NG LOCATION TIONS Closur sure e (Act Activ ive) e) Post-Closure Closure (Pa Pass ssiv ive) e) • Water Quality Monitoring Station " Sediment Quality Monitoring Station SNAP<><> V V Benthic Invertebrate Monitoring Station 6 d MAI N BASIN Plankton Monitoring Station 0 Toxicity I17 SNA. P1 1A Reviewe wer comment nts: 7 • GNWT-70, GNWT-165, ECCC-6, GNWT-108, MVLWB-8, MVLWB-9, MVLWB-18, MVLWB-21: Reduction in sampling frequency
AQUATI TIC EFFECTS ECTS MONITORING ORING PROGRAM OGRAM (AEMP) P) – BENCHMARK CHMARKS AEMP Benchmark Minus 25% NO3-N = 25 10 ECM Closure Post-closure 9 8 ··········-·-···•·1• .. ' Nitrate, as N (mg/L) : : = i :..::::-.!., 7 • : : I : :.• : ; : : : :-. : : 6 •• ' • s ) ....... - : :• =-• : • : • : ... J • • 5 1 • • • I • I I • • • •• •: • • • • .. •• • • y• • • • • • •• _, 4 I • • • • I • • . • ' :· :-· ;: : : : :-: ,. :. ! ! • • • -: , .... •· ~- : •• : : !· :• ;. ' ; ,. 3 ). t• •• ).. ).o ••• I" ) , , - I I/If, 1,J-,,r 2 f f r f I \Jr \.i "" t/'iJ'1-,')A,.f;./-p.N.,.._,,_,,._11.1rt..>r.,fj,/.._l..._,,_1,,_'4..11.~,._lw'-1.N.J1.1 1 0 2018 2020 2022 2024 2026 2028 2030 2032 2034 2036 2038 2040 2042 2044 2046 2048 Year Edge of the Mixing Zone in the Main Basin Reviewe wer comment nts: • GNWT-82: variability in AEMP benchmarks • MVLWB-10, SLEMA-6: TDS benchmark • GNWT-97: chloride benchmark • MVLWB-20 and 63: sulphate benchmark • GNWT-102: nitrate benchmark • MVLWB-62: ammonia benchmark 8
❖ ~ □ ~ ~ ❖ ~ AQUATI TIC EFFECTS ECTS MONITORING ORING PROGRAM OGRAM (AEMP) P) - ANALYSES ES Main Basin 5 oo ..= == " . =se=u=erfa=c=e===. --------------------------, s~ * Lili /- -:;ri:... ,, i~ • \ as -S.200 150 VI 6 100 50 ----------------- 0 ------------------ 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 Year Main Basin ::::? 3-5 -r,= == . ==,s,=u=,rfa=c=e== =, ------------------------, Z 3 O Mid -D epth 6, · Bottom ¢ ________________________ ! ___ _g_ ___ 9 2_ - - Normal Range ______________________ _ 5 w 2.0 --------------------------------------------- -0- - -- • --- ------------------------ ..1,2 "' u 1.5 ;i 1.0 VI "' w 0.5 ~ z Reviewe wer comment nts: 0.0 -------------- • ECCC-6, MVLWB-18: Analyses to determine trends 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 9 Year
~ ~ -♦- ~ ~ AQUATI TIC EFFECTS ECTS MONITORING ORING PROGRAM OGRAM (AEMP) P) - ANALYSES ES .. 3.S -.-----------------~ 50000 --o-- S na p La!(e - No rt hwest Ami go Snap L.al(e - M., fn Ba s· rn 5 VO 0 .. 40000 ---,:\,- Nortfleasl Lak e 3.0 -- ~~~ -~ ~- ~ --- t --- -0-- Lake 13 o v --- Noonal Ra11g e -2 SD O 0 E 30000 ... "J , «, • ci ·· ···· ·· · Norm.i i Ra11 ge - P red i cti on I nt e rva l '&! 2.5 0 . Ill 0 Ill 20000 ., !!I me >, = :rn o .2 ...I cc 10 000 C C 6000 ; ,S 1,5 j :E .x ; 0 a. I- t 4000 1.0 .c a, 0.5 • July 20 00 0 AugllSt 0.0 -'--,----~~~~~~~----....--J V Sep tember ~\rio~cfi\~\~\:i"-\(l"-i(l"-\(:;"'%:i'-\~"-, (l "%i.._\(l"-'e 2i0 10 20 12 2014 20 16 2018 Ye ar Year Reviewe wer comment nts: • ECCC-6, MVLWB-18: Analyses to determine trends 10 10
Recommend
More recommend
