EXH1011034997

PCHBPollution Control Hearings Board of the State of Washington

Summary of wetland mitigation credit for Sesttle-Tacoma International Airport Master PlanUpdateimprovements. Mitigation Area Mltigatiea Mitigation (acres) Credit In-Ba/a ]_]IKU_I_mW_ - Creditratio hi Vacca From (la'ierctmverted_,_,lmd andotherupimd) 6.60 6.60 W,_l,_ _,_- ¢3"editratio 1".2 V__-o_,__Farm(Finned Wetland,OtherWetlands,LoraLake) 5.70 2.85 W_tt.d,m_n_ c_._Wc_d_d_ n_ 10_5 5.12 Ty_v_.y c,af_ 4.5o 2.25 •wek.dm_ Mm C_k_ t.01 0.51 Subtotal 28.06 1733 _- Ct,edit ratio 1:5 MillerM Buffer, South of Vacca Farm 40.86 8.17 Va_a Fsrm 4.58 0.92 LoraLake 0.27 0.05 'ryee Valley Golf CourseMitigationArea Buffer 1.57 0.31 West BranchDes MoinesCreekBuffer 3.38 0.68 Subtotal 50.66 10.13 Preservation- Creditgstio hi0 Borrow Area3 wetnn,4 2.35 0.24 Bonow Area3 Buffe_ 21.20 2.10 Subtolal 23.55 2.34 Total In-Bin Mitigationm'b 102.27 29.80 Out-of-Brain WetlandCrestionC- M ratio I:I Forest (17.20 ac_es),shrub(6.0 acres), emergent (6.20 acres), and open 29.98 29.98 water(0.60_rea) Wetland_ - Creditratio 1".2 19.50 9.75 - Creditnaio 1:5 I_,90 3.18 Total Out-of-Basin Mitigation 65.38 42.91 Totsl Mltigstloa 167.65 72.71 Immg mlnmmm_ w s l_00,0O0 trot tnM _ w_Hl_l _ b M_ atomi ie DusMinus md Mmw Cmslkwslmhsds___,,,___ 102scsw.Is- t.-.i., mie_s_o _ _,¢dal Iv/w_md ilmet (I|M _ immmal idm Z@5 agmaImqmr_0 imn4m* a _l amimlmld_mnt lie. c ISm_ m ml_ efl_l_ mik _ m.. k elm _ u ,lentiea. $0279161.03 1011 AR 034997 EXH1011034997
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