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HomeMy WebLinkAbout06.a.1) (Handout) Greenhouse Gas (GHG) Compliance(40 0 4D%# 0 1) iHandou�� Greenhouse Gas Compliance Rita Cheng Provisional Associate Engineer Plant Operations Department Regulatory Group September 19, 2013 Board Meeting Central Contra Costa Sanitary District California's Assembly Bill 32 • Requires GHG emissions be reduced to 1990 levels by 2020 • CCCSD's GHGs: CO2, CH4, and N20 • Major components: - GHG mandatory reporting - Cap and Trade Program ;� cI).. Biogenic vs. Anthropogenic Biogenic Emissions - Landfill Gas CO2 - Biosolids Coe Anthropogenic Emissions - Natural Gas CO2 CH4, N2O - Landfill Gas CH4, N2O - Biosolids CH4, N2O - Diesel Fuel CO2. CH4; N2O CA's Cap and Trade Program • Compliance threshold: 25,OOO1VIT CO2e /year anthropogenic emissions • Purchase allowances if threshold is triggered for up to 4 consecutive years • Current allowance price: $12 /MT • Projected allowance price: $40 -50 /MT in 2020 • Anthropogenic emissions only CA GHG Mandatory Reporting Regulation • Non - abbreviated Reporting Trigger: GHG total 25,000 MT CO2e /year (biogenic + anthropogenic) • Electronic Submittal erne -GOT. falitoIDia EIC:htanlo GfCenrwusc Cur � tt.pmtinq cool • Mandatory annual third -party verification CARE- accredited Verifier 2011 CCCSD Greenhouse Gas Emissions (excluding blogenic emissions) TOTAL GHG Emissions - 241138 MTCO2eq 26,000 20,000 i"M 16,000 10,000 6,000 1,2% 2,127 1,404 0 I. Q = _ 66 4 27 C0110mation Awaary Sailor Awdlhary Sailer Multlple Hearth Muthplo Hearth HoWehold Imhoff Place 1 2 Furnace 1 Furnace 2 HazerAms Warehouse Waste Collection GHG Management Strategy • Management of Natural Gas consumption - Minimize PG &E demand charges • Weekly analysis of Year -to -Date GHG total • Projections for remaining 2013 • Make necessary operational changes to meet internal target of 24,200 MT CO2e 2013 Greenhouse Gas Inventory Tracker (As or Sepwmbw 1T, 2013) A.Mal VNr4o -0e0 GH6 Emisalom: 18.314 MT CO20 —Total Daily NG Usage Copan NG Daily Usage -- -Total Dady lFG Usage —PG &E Import (kw) —Total Stems Flow (Ibft) 3.000 _ _ 40000 35000 2.500 _ � 30000 (� 2.000 ..._ — 25000 ir 201100 to LL 1.000 10000 wo _ _ —_.. S .._ s00o 0 fN12 IJ lby.IJ ' ' � 0 mJ uJ IuIJ GWt] Od 1]wt c n � GHG Management Strategy • Management of Natural Gas consumption - Minimize PG &E demand charges • Weekly analysis of Year -to -Date GHG total • Projections for remaining 2013 • Make necessary operational changes to meet internal target of 24,200 MT CO2e 2013 Operational Challenges • Landfill Gas Outage in August 2013 • Limited LFG supply <1000 kcfd Process Optimization • DO optimization for A/N Tanks and FE Channel • Turbine 2 efficiency Fuel vs. Energy Process Optimization Data (July 1st - Sept 17th) —Total NG (kdd)- -Total LFG (kdd) = PG &E Import (kW) —Total Steam Flow (lb/hr) 211W two two 1400 12w n op 1000 aw gn bW r 400 2W 6/2S /13 7/5113 1115/13 7/1/13 40M DO Optimization 49100 OfiOD a41w0 12W0 3WW 2wW 1WW ` 14000 'r' a 121100 i+ 101100 191100 E lWW 0f N 140W 12000 1WW dw0 4Wo 1000 -- 9/4113 9/14/13 4114/13 9!3/13 9/13/13 0 0/23/13 Strategy Moving Forward... • Minimize NG and PG &E import during peak • Turn off Cogeneration Contingency Plan • Operation of Electric Blower • Additional PG &E import Questions? Rita Cheng ext. 630 Randy Schmidt ext. 333 - - i