天津天豐鋼鐵股份有限公司主廠區地塊位于天津市靜海區大邱莊鎮東2公里處,地塊四至范圍:西側為津王路,北側為津神線,東側為天豐鋼鐵東區,南側為軋三鋼鐵北區。地塊占地面積488289.71m2。
2001年前,地塊內為滿井子村所屬農田,主要種植小麥玉米等農作物。2001年后為天豐鋼鐵廠區,至2005年11月,地塊南側為農用地,地塊內主要布局為辦公生活區、煉鐵、燒結、煉鋼、露天料場;地塊利用率較低。2008年2月,地塊南側為農用地,地塊內為天豐鋼鐵辦公生活區、制氧、大機修、煉鋼、露天料區、煉鐵、燒結及輔助設施等,在地塊外東側租用地塊建成燒結、煉鐵車間。2010年2月,地塊內燒結、煉鐵停用。2011年底,拆除地塊內煉鐵及燒結車間,在原煉鐵區域建設污水處理站、鑄鐵和噴煤系統。2021年初,地塊內開始拆除,至2021年12月,地塊內除西側辦公生活區、景觀綠化區、變電站區域規劃保留外,其余生產區域全部拆遷為空地,地面苫蓋有防塵網,部分道路及雨污水管網現狀未拆除。
根據《關于保障工(gong)(gong)業企(qi)業地塊再(zai)開發利(li)(li)用環(huan)境安全(quan)的通知》(環(huan)發[2012]140號(hao))、《天(tian)津市環(huan)保局工(gong)(gong)業企(qi)業關停(ting)搬遷及原址(zhi)場(chang)地再(zai)開發利(li)(li)用污(wu)染防治(zhi)工(gong)(gong)作(zuo)方案》(津環(huan)保固[2014]140號(hao))等(deng)文(wen)件要求,關停(ting)搬遷工(gong)(gong)業企(qi)業原址(zhi)場(chang)地應開展環(huan)境調查和(he)風險評估工(gong)(gong)作(zuo)。
2021年(nian)10月(yue),我公(gong)司組織(zhi)有(you)關技(ji)術(shu)人(ren)員對該地(di)塊及(ji)周圍地(di)塊歷史發展狀(zhuang)況(kuang)(kuang)、各個歷史時期生產(chan)裝置(zhi)布置(zhi)、主要產(chan)品、原(yuan)輔材料使用和(he)存儲情況(kuang)(kuang)、生產(chan)工(gong)藝、污(wu)(wu)(wu)(wu)(wu)染(ran)(ran)物排(pai)放及(ji)處理等情況(kuang)(kuang)進行調(diao)查(cha)研究,識別(bie)、判(pan)斷地(di)塊土(tu)壤(rang)和(he)地(di)下(xia)水污(wu)(wu)(wu)(wu)(wu)染(ran)(ran)的(de)可能(neng)性;分析企業生產(chan)環節上可能(neng)存在的(de)排(pai)污(wu)(wu)(wu)(wu)(wu)點、污(wu)(wu)(wu)(wu)(wu)染(ran)(ran)因(yin)子、污(wu)(wu)(wu)(wu)(wu)染(ran)(ran)途徑、污(wu)(wu)(wu)(wu)(wu)染(ran)(ran)范(fan)圍及(ji)程度(du),確定(ding)污(wu)(wu)(wu)(wu)(wu)染(ran)(ran)物種類及(ji)污(wu)(wu)(wu)(wu)(wu)染(ran)(ran)程度(du)等;并根據《建設用地(di)土(tu)壤(rang)污(wu)(wu)(wu)(wu)(wu)染(ran)(ran)狀(zhuang)況(kuang)(kuang)調(diao)查(cha)技(ji)術(shu)導則》(HJ 25.1-2019)及(ji)《建設用地(di)土(tu)壤(rang)環境(jing)調(diao)查(cha)評估技(ji)術(shu)指(zhi)(zhi)南》(環境(jing)保(bao)護(hu)部公(gong)告2017年(nian)第72號)等有(you)關文件指(zhi)(zhi)導,完成了(le)地(di)塊土(tu)壤(rang)污(wu)(wu)(wu)(wu)(wu)染(ran)(ran)狀(zhuang)況(kuang)(kuang)調(diao)查(cha)工(gong)作。根據所收集(ji)資料和(he)檢測分析結果(guo),編制了(le)《天(tian)津天(tian)豐鋼鐵股份有(you)限公(gong)司主廠區地(di)塊土(tu)壤(rang)污(wu)(wu)(wu)(wu)(wu)染(ran)(ran)狀(zhuang)況(kuang)(kuang)調(diao)查(cha)報告》。
世紀鑫海(天津)環境科技有限公(gong)(gong)司(si)于2021年10月(yue)-2022年4月(yue)委托天津市隆匯鑫環境科技有限公(gong)(gong)司(si)對地(di)(di)(di)(di)塊(kuai)進行了水(shui)(shui)文地(di)(di)(di)(di)質調查及初步調查,埋深10m深度范圍內的地(di)(di)(di)(di)層(ceng)(ceng)巖性(xing)特征,其按(an)成因年代可分為(wei)(wei)(wei)3層(ceng)(ceng),分別為(wei)(wei)(wei)人工填土層(ceng)(ceng)(Qml)、全(quan)新統(tong)上(shang)組河(he)床~河(he)漫灘相(xiang)沉積(ji)(Q43al)和全(quan)新統(tong)中組淺海相(xiang)沉積(ji)(Q42m)。地(di)(di)(di)(di)塊(kuai)潛水(shui)(shui)含水(shui)(shui)層(ceng)(ceng)埋深在(zai)0.86~1.66m,潛水(shui)(shui)含水(shui)(shui)層(ceng)(ceng)巖性(xing)為(wei)(wei)(wei)全(quan)新統(tong)上(shang)組河(he)床~河(he)漫灘相(xiang)沉積(ji)(Q43al)粉質黏(nian)土(地(di)(di)(di)(di)層(ceng)(ceng)編(bian)號④1)、粉土(地(di)(di)(di)(di)層(ceng)(ceng)編(bian)號④2)和全(quan)新統(tong)中組淺海相(xiang)沉積(ji)(Q42m)粉土(地(di)(di)(di)(di)層(ceng)(ceng)編(bian)號⑥3)。地(di)(di)(di)(di)塊(kuai)內潛水(shui)(shui)含水(shui)(shui)層(ceng)(ceng)地(di)(di)(di)(di)下(xia)(xia)水(shui)(shui)水(shui)(shui)位(wei)埋深在(zai)0.86~1.66m之(zhi)間(jian),平均(jun)水(shui)(shui)位(wei)埋深為(wei)(wei)(wei)1.34m,水(shui)(shui)位(wei)標高在(zai)1.40~2.00m之(zhi)間(jian),平均(jun)水(shui)(shui)位(wei)標高為(wei)(wei)(wei)1.66m。地(di)(di)(di)(di)塊(kuai)地(di)(di)(di)(di)下(xia)(xia)水(shui)(shui)徑(jing)流方(fang)向(xiang)為(wei)(wei)(wei)自西北向(xiang)東南,水(shui)(shui)力坡度約(yue)為(wei)(wei)(wei)0.20‰,地(di)(di)(di)(di)下(xia)(xia)徑(jing)流主(zhu)要是地(di)(di)(di)(di)塊(kuai)東側的地(di)(di)(di)(di)下(xia)(xia)徑(jing)流側向(xiang)補給(gei)。地(di)(di)(di)(di)塊(kuai)內地(di)(di)(di)(di)下(xia)(xia)水(shui)(shui)排泄方(fang)式為(wei)(wei)(wei)潛水(shui)(shui)蒸發、側向(xiang)流出。
初步調查(cha)(cha)過(guo)程地(di)(di)塊內共布(bu)設149個土(tu)(tu)壤采樣(yang)點位,共采集土(tu)(tu)壤樣(yang)品(pin)550個(包含現場(chang)(chang)平行樣(yang)625個),設置地(di)(di)下(xia)水監(jian)測(ce)井39口,共采集地(di)(di)下(xia)水45個(含現場(chang)(chang)平行樣(yang)品(pin)6個),監(jian)測(ce)項目(mu)為《土(tu)(tu)壤環境質量建(jian)設用地(di)(di)土(tu)(tu)壤污染(ran)(ran)(ran)風險管控(kong)標(biao)(biao)準(zhun)(試(shi)行)》(GB36600-2018)中基(ji)礎(chu)45項+pH值(zhi)+重金屬(shu)(鋅、鈷、銻)+氟化物(wu)(wu)+氰化物(wu)(wu)。調查(cha)(cha)結(jie)果(guo)顯示,地(di)(di)塊內土(tu)(tu)壤中各類(lei)(lei)(lei)污染(ran)(ran)(ran)物(wu)(wu)指(zhi)標(biao)(biao)監(jian)測(ce)結(jie)果(guo)均低于(yu)《土(tu)(tu)壤環境質量建(jian)設用地(di)(di)土(tu)(tu)壤污染(ran)(ran)(ran)風險管控(kong)標(biao)(biao)準(zhun)(試(shi)行)》(GB36600-2018)中第二類(lei)(lei)(lei)用地(di)(di)篩選值(zhi)。地(di)(di)下(xia)水中各類(lei)(lei)(lei)污染(ran)(ran)(ran)物(wu)(wu)指(zhi)標(biao)(biao)監(jian)測(ce)結(jie)果(guo)均低于(yu)《地(di)(di)下(xia)水質量標(biao)(biao)準(zhun)》(GB/T 14848-2017)中IV類(lei)(lei)(lei)限值(zhi),石(shi)油烴檢(jian)出濃(nong)度低于(yu)《上(shang)海市建(jian)設用地(di)(di)土(tu)(tu)壤污染(ran)(ran)(ran)狀況(kuang)調查(cha)(cha)、風險評(ping)估(gu)、風險管控(kong)與修(xiu)復(fu)方案編制、風險管控(kong)與修(xiu)復(fu)效果(guo)評(ping)估(gu)工作(zuo)的(de)補充規定(試(shi)行)》中石(shi)油烴的(de)第二類(lei)(lei)(lei)用地(di)(di)篩選值(zhi)。
綜(zong)上,本(ben)項目地(di)(di)(di)塊內土(tu)壤檢(jian)測(ce)的(de)(de)污染物(wu)含量未超過《土(tu)壤環(huan)境質量建(jian)設用(yong)(yong)地(di)(di)(di)土(tu)壤污染風(feng)險(xian)管(guan)(guan)(guan)控標準(zhun)(試行)》(GB36600-2018)中(zhong)第二類用(yong)(yong)地(di)(di)(di)篩選值,地(di)(di)(di)下水(shui)中(zhong)污染物(wu)含量均未超過《地(di)(di)(di)下水(shui)質量標準(zhun)》(GB/T 14848-2017)中(zhong)IV類限(xian)值,石油烴檢(jian)出(chu)濃度(du)低(di)于《上海市建(jian)設用(yong)(yong)地(di)(di)(di)土(tu)壤污染狀況調查、風(feng)險(xian)評估(gu)、風(feng)險(xian)管(guan)(guan)(guan)控與修復方案(an)編制、風(feng)險(xian)管(guan)(guan)(guan)控與修復效果(guo)評估(gu)工作的(de)(de)補(bu)充規(gui)定(試行)》中(zhong)石油烴的(de)(de)第二類用(yong)(yong)地(di)(di)(di)篩選值,地(di)(di)(di)塊不屬于污染地(di)(di)(di)塊,可作為工業(ye)用(yong)(yong)地(di)(di)(di)直接開發(fa)利用(yong)(yong)。
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