【正文】 標準 ........................................................................................................... 7 環(huán)境質(zhì)量標準 ................................................................................................... 7 污染物排放標準 ............................................................................................. 10 評價范圍 ......................................................................................................... 11 大氣環(huán)境 ......................................................................................................... 11 地下水 ............................................................................................................. 11 聲環(huán)境 ............................................................................................................. 11 生態(tài)環(huán)境 ......................................................................................................... 12 環(huán)境風險 ......................................................................................................... 12 環(huán)境功能區(qū)劃 ................................................................................................. 12 環(huán)境空氣功能區(qū)劃 ......................................................................................... 12 水環(huán)境功能區(qū)劃 ............................................................................................. 12 聲環(huán)境功能區(qū)劃 ............................................................................................. 12 環(huán)境保護目標 ................................................................................................. 13 2 建設項目過程回顧 ................................................................................................................. 15 項目基本情況 ................................................................................................. 15 建設過程 ......................................................................................................... 15 環(huán)境保護措施落實情況 ................................................................................. 18 環(huán)境監(jiān)測情況 ................................................................................................. 20 公眾參與情況 ................................................................................................. 25 3 建設項目工程評價 ................................................................................................................. 27 項目地點 ......................................................................................................... 27 項 目規(guī)模 ......................................................................................................... 27 工程概況 ......................................................................................................... 27 選礦廠 ............................................................................................................. 27 尾礦庫 ............................................................................................................. 30 第一、二尾礦庫生態(tài)恢復情況 ..................................................................... 31 尾礦庫毒性浸出實驗 ..................................................................................... 32 生產(chǎn)工藝 ......................................................................................................... 33 尾礦壩 ............................................................................................................. 33 庫外攔洪堤 ..................................................................................................... 34 排水系統(tǒng) ......................................................................................................... 34 金川集團股份有限公司 尾礦庫 環(huán)境影響后評價報告 II 回 水系統(tǒng) ......................................................................................................... 34 在線監(jiān)測系統(tǒng) ................................................................................................. 34 污染源調(diào)查 ..................................................................................................... 35 廢氣 ................................................................................................................. 35 無組織廢氣監(jiān)測 ............................................................................................. 35 廢水 ................................................................................................................. 37 噪聲 ................................................................................................................. 38 4 區(qū)域環(huán)境概況 ......................................................................................................................... 39 地理位置 ......................................................................................................... 39 地形地貌 ......................................................................................................... 39 地質(zhì)構造 ......................................................................................................... 41 水文地質(zhì)概況 ................................................................................................. 42 礦產(chǎn)資源 ......................................................................................................... 43 土壤、植被 ..................................................................................................... 44 地震 ................................................................................................................. 44 5 區(qū)域環(huán)境變化評價 ................................................................................................................. 45 環(huán)境空氣影響 ................................................................................................. 45 環(huán)境空氣質(zhì)量 歷史監(jiān)測資料 ......................................................................... 45 環(huán)境空氣質(zhì)量現(xiàn)狀監(jiān)測情況 ......................................................................... 54 無組織廢氣現(xiàn)狀監(jiān)測 ................................................