Target facilities (buildings) First floor of the building Second floor of the building Building for filtering process 14 Building for drum washing process

Target facilities (High temperature thermal destruction equipment) 15

Environmental assessment of the surrounding area (2014) Target of survey Analysis of soil Analysis of ambient air PCBs Dioxins (pg-TEQ/g) PCBs （ μg/m 3 ) Dioxins (pg-TEQ/m 3 ） containment (mg/kg) Elution (mg/ℓ) soil East Not detected 7.1 Not detected West 〃〃 5.4 〃 South 〃〃 1.4 〃 North 〃〃 1.3 〃 quantitation limit Env. Standard 1000pg‐TEQ/g 0.05 Env. Standard 0.6 pg-TEQ/m 3 On the boundaries of the Plant (4 points) : No PCBs detected Dioxin is less than the environmental standard 16

Environmental assessment of High temperature thermal destruction facilities (2014) 17

Curing method ・ Be sure to cover the whole surface of waste PCB storage tanks and drum washing building (covering the entire surface method) ・ Curing must be formed in dual structure ・ Set changing room (used for workers going in and out) and front room (used for vehicles going in and out) ・ This curing method should be designed in compliance with “guidelines for structural performance of buildings with a limited term”. 18

Demolition work (1) Faithfully follow the “Outline on countermeasures against exposure to dioxins”, refer to the dismantling method manual and design the plan (2) Try hard to find the way without using fire (3) Put PCB waste to a sealed container like “bakkan” (detachable container) or oil drum shown below in the cured place (4) Below is the main steps for demolition work (high temperature decomposition facilities are demolished in regular way) Preceding work Set curing and environment related equipment Conduct demolition work ( dismantle →store → carry ) Remove the inner sheet of curing Remove the curing and environment related equipment Bakkan (detachable container) An oil drum ・ Treat gas phase portion of equipment with activated charcoal ・ Clean the bottom part of equipment 19

Storage and treatment of wastes (1) All the PCB wastes should be kept and managed in compliance with the law Any equipment with no PCBs detected should be disposed according to Waste Management and Public Cleansing Law (2) Estimated wastes containing PCBs 1) Waste PCBs supplying equipment within the area of high temperature thermal destruction facilities 2) No.1 – No.4 Waste PCBs tanks & drum washing building 3) Any devices which has contact with PCBs within the filtering device building (3) The storage cabinet to keep PCBs waste 1) Newly build a storage cabinet to keep PCBs waste near filtering device building 2) The storage cabinet should have the strong structure to bear against the estimated Earthquakes in Yamasaki Fault zone and Tsunami height of Nankai Trough Earthquake in Takasago city 3) The new storage cabinet should be designed and constructed along with the Building Structure Law (verify to be proof against Earthquakes in Yamasaki Fault zone) 4) Because the surroundings of the storage cabinet is located T.P.+3m or more, any estimated tsunami height of Nankai Trough Earthquake will not reach the area ( Prefecture : T.P. +2.3m, National government : T.P. +3m) 20

PCBs waste storage cabinet ・ PCBs waste storage cabinet is planned to be constructed next to filtering device building 21 Planned new storage cabinet construction site Planned to use as storage cabinet Planned PCBs waste storage cabinet construction site Currently used as filtering device building

Environment Monitoring Plan Survey point targetitemsSurvey time 4 points on the boundaries of the Plant soil PCBs (containment, elution) Dioxins Just before the beginning of preparatory work: once During construction work: once (June) After the PCBs waste storage related work completed: once Ambient air PCB concentration Dioxins ditto Survey pointtargetitemsSurvey time 4 points on the outer periphery curing + 1 point at the outlet of negative pressure dust collector soilPCBs (containment, elution) Dioxins Just before the beginning of preparatory work of demolition: once During demolition work: once after 1 month passed & once (June) After demolition completed(after removal of curing etc.): once Ambient air PCB concentration Dioxins ditto (1) Environmental Survey of surrounding area 22 (2) Environmental Survey of surrounding area of target facilities

Environmental survey ( Monitoring point) 23 Area where target facilities located Sampling points