88 2 01 9 S U S T AINABILITY REPOR T O ur P erf ormanc e E ne rg y U s e W e us e ener gy t o mine mo v e and pr oc e s s or e and w as t e r ock as w ell as f or mine v entilation and de w at ering The t ype and quantit y o f emis sions fr om our oper ations ar e det ermined b y the ener gy s our c e and the natur e o f the w a y w e mine and pr oc e s s or e s that is lar g ely dependent on the miner alogy o f the depo sit s The ener gy us ed at our sit e s c ome s princip ally fr om die s el fuel f or po w ering he a vy equipment and in s ome limit ed c as e s electric al po w er g ener ation or electricit y dir ectly fr om r egional or national po w er supply grids The grid ener gy w e us e is bec oming cle aner and mor e efcient e ach y e ar sinc e the juris dictions wher e w e oper at e all ha v e been incr e asing r ene w able ener gy g ener ation Grid electricit y has a lo w er c arbon f ootprint than onsit e electricit y g ener ation G H G Em i s sio n s Gr eenhous e g as emis sion tr ends f or our oper ations g ener ally tr ack our ener gy us e Ho w e v er in periods such as 2 01 7 2 018 when w e c onnect ed the D olor e s mine t o the national grid and supplement ed the L a C olor ada electric al supply c onnection w e e xperienc ed a decr e as e in t ot al GHG emis sions as dir ect S c ope 1 emis sions w er e tr ans f err ed t o cle aner grid electricit y S c ope 2 O ur 2 01 9 S c ope 1 and 2 GHG emis sions incr e as ed as e xpect ed due t o the deepening and sp atially dis t ancing o f our silv er s egment mine s and the addition o f the ne w g old s egment oper ations fr om T ahoe G H G Em i s sio n s To n n e s C O 2 e q 2 0 1 9 T ot al 2 0 19 S i lv e r S e g m e n t 3 2 01 8 2 0 17 S c ope 1 Dir ect 1 308 504 1 7 1328 1 64 645 1 7 9 842 S c ope 2 Electricit y 2 1 42 099 12 6 7 39 12 3 880 11 3 9 7 1 T ot al S c ope 1 and 2 450 60 3 298 06 7 288 525 2 93 8 1 3 S c ope 3 V alue Chain 668 098 Not E s timat ed Not E s timat ed Not E s timat ed 1 P an Americ an Silv er us ed National In v ent or y R eport Canada 2 01 9 t o c alculat e Dir ect S c ope 1 GHG emis sions The glob al w arming pot ential G WP us ed f or c alculations is b as ed on the inf ormation pr o vided b y the Go v ernment o f Canada Gas e s included in this c alculation ar e C O2 CH4 and N2O 2 The GHG P r ot oc ol pur chas ed IEA t ool 2 01 9 f or ener gy indir ect S c ope 2 GHG emis sions Gas e s included in this c alculation ar e C O2 CH4 and N2o 3 Silv er s egment c onsis t s o f the six silv er mine s in e xis t enc e prior t o P an Americ an s ac quisition o f T ahoe This y e ar w e c omplet ed our fr s t e s timat e o f our V alue Chain S c ope 3 emis sions in ac c or danc e with the Gr eenhous e Gas P r ot oc ol s C orpor at e V alue Chain S c ope 3 A c c ounting and R eporting St andar d using the Q uantis S c ope 3 E v aluat or t ool f or all 15 c at eg orie s e x c ept do wns tr e am pr oc e s sing o f met al c onc entr at e s which w e f ound t o be under e s timat ed b y the E v aluat or W e ins t e ad obt ained dir ect emis sions dat a fr om our p artner smelt er s in P eru and Me xic o that pr oc e s s zinc and le ad c onc entr at e s fr om our mine s The s e dat a allo w ed us t o c alculat e mor e ac cur at e do wns tr e am emis sions f or pr oc e s sing o f our met al c onc entr at e s s old 12 4 601 t onne s C O2eq f or 2 01 9 which w as us ed t o c omplet e the S c ope 3 e s timat e G R I 3 02 1 3 0 5 1 2 3 This y e ar w e c omplet ed our fr s t e s timat e o f our V alue Chain S c ope 3 emis sions in ac c or danc e with the Gr eenhous e Gas P r ot oc ol s C orpor at e V alue Chain S c ope 3 A c c ounting and R eporting St andar d