【正文】 ................................................................................. 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(hù)目標(biāo) ................................................................................................. 13 2 建設(shè)項(xiàng)目過程回顧 ................................................................................................................. 15 項(xiàng)目基本情況 ................................................................................................. 15 建設(shè)過程 ......................................................................................................... 15 環(huán)境保護(hù)措施落實(shí)情況 ................................................................................. 18 環(huán)境監(jiān)測情況 ................................................................................................. 20 公眾參與情況 ................................................................................................. 25 3 建設(shè)項(xiàng)目工程評價(jià) ................................................................................................................. 27 項(xiàng)目地點(diǎn) ......................................................................................................... 27 項(xiàng) 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(fù)情況 ..................................................................... 31 尾礦庫毒性浸出實(shí)驗(yàn) ..................................................................................... 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(tuán)股份有限公司 尾礦庫 環(huán)境影響后評價(jià)報(bào)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(gòu)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(jià) ................................................................................................................. 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 ..................................................................................... 55 環(huán)境空氣質(zhì)量變化分析 ................................................................................. 57 聲環(huán)境 ............................................................................................................. 60 聲環(huán)境歷史監(jiān)測資料 ..................................................................................... 60 聲環(huán)境現(xiàn)狀監(jiān)測 ............................................................................................. 60 聲環(huán)境質(zhì)量變化分析 ..................................................................................... 61 地下水環(huán)境 ..................................................................................................... 63 地下水環(huán)境歷史監(jiān)測情況 ............................................................................. 63 地下水環(huán)境現(xiàn)狀監(jiān)測情況 ............................................................................. 71 地下水質(zhì)量變化分析 ..................................................................................... 80 土壤環(huán)境 ......................................................................................................... 82 土壤環(huán)境歷史監(jiān)測情況 .............................................................