<p><strong><span style="font-family: 'Times New Roman';font-size: 16px">1</span></strong><strong><span style="font-family: 宋体;font-size: 16px">、项目地点与调查范围</span></strong></p><p><span style="font-family: 宋体;font-size: 16px">贵州省松桃汇丰锰业有限公司（麻旦分厂）地块，也称贵州省松桃汇丰锰业有限公司关闭退出腾退场地（简称</span><span style="font-family: 'Times New Roman';font-size: 16px">“</span><span style="font-family: 宋体;font-size: 16px">汇丰锰业地块</span><span style="font-family: 'Times New Roman';font-size: 16px">”</span><span style="font-family: 宋体;font-size: 16px">），位于铜仁市松桃县蓼皋街道麻旦社区，松桃县污水处理厂北侧，地块中心点位坐标为：东经</span><span style="font-family: 'Times New Roman';font-size: 16px">109°12'5.24"</span><span style="font-family: 宋体;font-size: 16px">，北纬</span><span style="font-family: 'Times New Roman';font-size: 16px">28°10'58.09"</span><span style="font-family: 宋体;font-size: 16px">，本次调查地块红线范围面积约</span><span style="font-family: 'Times New Roman';font-size: 16px">80478.4</span><span style="font-family: 宋体;font-size: 16px"><span style="font-family:Times New Roman">m</span></span>^{<span style="font-family: 宋体;font-size: 16px;vertical-align: super"><span style="font-family:Times New Roman">2</span></span>}<span style="font-family: 宋体;font-size: 16px">。本次调查范围为汇丰锰业地块红线范围，同时对地块周边</span><span style="font-family: 'Times New Roman';font-size: 16px">1000m</span><span style="font-family: 宋体;font-size: 16px">范围内的外环境进行必要的辅助调查。本次调查的对象为调查范围内的固体废物、土壤、废水和地下水。本次项目调查工作按照《建设用地土壤污染状况调查技术导则》（</span><span style="font-family: 'Times New Roman';font-size: 16px">HJ25.1-2019</span><span style="font-family: 宋体;font-size: 16px">）的要求开展，共包括三个阶段，第一阶段土壤污染状况调查、第二阶段土壤污染状况调查（初步调查）和第三阶段土壤污染状况调查</span><span style="font-family: 宋体;font-size: 16px">（详细调查）</span><span style="font-family: 宋体;font-size: 16px">。</span></p><p><strong><span style="font-family: 宋体;font-size: 16px"><span style="font-family:Times New Roman">2</span></span></strong><strong><span style="font-family: 宋体;font-size: 16px">、土壤污染检测结果</span></strong></p><p><span style="font-family: 宋体;font-size: 16px">（</span><span style="font-family: 'Times New Roman';font-size: 16px">1</span><span style="font-family: 宋体;font-size: 16px">）初步采样调查阶段土壤初步调查共检测了</span><span style="font-family: 'Times New Roman';font-size: 16px">120</span><span style="font-family: 宋体;font-size: 16px">个土壤样品，初步调查结果显示场地内土壤中锰、砷和六价铬超过《土壤环境质量建设用地土壤污染风险管控标准（试行）》（</span><span style="font-family: 'Times New Roman';font-size: 16px">GB36600-2018</span><span style="font-family: 宋体;font-size: 16px">）和《建设用地土壤污染风险筛选值和管制值》（</span><span style="font-family: 'Times New Roman';font-size: 16px">DB4403/T67-2020</span><span style="font-family: 宋体;font-size: 16px">）二类用地筛选值；其余</span><span style="font-family: 'Times New Roman';font-size: 16px">pH</span><span style="font-family: 宋体;font-size: 16px">、硒、锑、钒、钴、石油烃、铜、镉、铅、汞、镍、四氯化碳、氯仿（三氯甲烷）、氯甲烷、</span><span style="font-family: 'Times New Roman';font-size: 16px">1,1-</span><span style="font-family: 宋体;font-size: 16px">二氯乙烷、</span><span style="font-family: 'Times New Roman';font-size: 16px">1,2-</span><span style="font-family: 宋体;font-size: 16px">二氯乙烷、</span><span style="font-family: 'Times New Roman';font-size: 16px">1,1-</span><span style="font-family: 宋体;font-size: 16px">二氯乙烯、顺</span><span style="font-family: 'Times New Roman';font-size: 16px">-1,2-</span><span style="font-family: 宋体;font-size: 16px">二氯乙烯、反</span><span style="font-family: 'Times New Roman';font-size: 16px">-1,2-</span><span style="font-family: 宋体;font-size: 16px">二氯乙烯、二氯甲烷、</span><span style="font-family: 'Times New Roman';font-size: 16px">1,2-</span><span style="font-family: 宋体;font-size: 16px">二氯丙烷、</span><span style="font-family: 'Times New Roman';font-size: 16px">1,1,1,2-</span><span style="font-family: 宋体;font-size: 16px">四氯乙烷、</span><span style="font-family: 'Times New Roman';font-size: 16px">1,1,2,2-</span><span style="font-family: 宋体;font-size: 16px">四氯乙烷、四氯乙烯、</span><span style="font-family: 'Times New Roman';font-size: 16px">1,1,1-</span><span style="font-family: 宋体;font-size: 16px">三氯乙烷、</span><span style="font-family: 'Times New Roman';font-size: 16px">1,1,2-</span><span style="font-family: 宋体;font-size: 16px">三氯乙烷、三氯乙烯、</span><span style="font-family: 'Times New Roman';font-size: 16px">1,2,3-</span><span style="font-family: 宋体;font-size: 16px">三氯丙烷、氯乙烯、苯、氯苯、</span><span style="font-family: 'Times New Roman';font-size: 16px">1,2-</span><span style="font-family: 宋体;font-size: 16px">二氯苯、</span><span style="font-family: 'Times New Roman';font-size: 16px">1,4-</span><span style="font-family: 宋体;font-size: 16px">二氯苯、乙苯、苯乙烯、甲苯、间二甲苯</span><span style="font-family: 'Times New Roman';font-size: 16px">+</span><span style="font-family: 宋体;font-size: 16px">对二甲苯、邻二甲苯、硝基苯、苯胺、</span><span style="font-family: 'Times New Roman';font-size: 16px">2-</span><span style="font-family: 宋体;font-size: 16px">氯酚、苯并</span><span style="font-family: 'Times New Roman';font-size: 16px">[a]</span><span style="font-family: 宋体;font-size: 16px">蒽、苯并</span><span style="font-family: 'Times New Roman';font-size: 16px">[a]</span><span style="font-family: 宋体;font-size: 16px">芘、苯并</span><span style="font-family: 'Times New Roman';font-size: 16px">[b]</span><span style="font-family: 宋体;font-size: 16px">荧蒽、苯并</span><span style="font-family: 'Times New Roman';font-size: 16px">[k]</span><span style="font-family: 宋体;font-size: 16px">荧蒽、䓛、二苯并</span><span style="font-family: 'Times New Roman';font-size: 16px">[a,h]</span><span style="font-family: 宋体;font-size: 16px">蒽、茚并</span><span style="font-family: 'Times New Roman';font-size: 16px">[1,2,3-cd]</span><span style="font-family: 宋体;font-size: 16px">芘、萘共</span><span style="font-family: 'Times New Roman';font-size: 16px">47</span><span style="font-family: 宋体;font-size: 16px">个指标未见超标（个别异常值除外）。土壤初步调查结果显示，六价铬超标率最高，为</span><span style="font-family: 'Times New Roman';font-size: 16px">37.50%</span><span style="font-family: 宋体;font-size: 16px">，最大浓度为</span><span style="font-family: 'Times New Roman';font-size: 16px">53.3mg/kg</span><span style="font-family: 宋体;font-size: 16px">，最大超标倍数为</span><span style="font-family: 'Times New Roman';font-size: 16px">8.35</span><span style="font-family: 宋体;font-size: 16px">，最大污染深度为</span><span style="font-family: 'Times New Roman';font-size: 16px">16m</span><span style="font-family: 宋体;font-size: 16px">；砷超标率次之，为</span><span style="font-family: 'Times New Roman';font-size: 16px">15.83%</span><span style="font-family: 宋体;font-size: 16px">，最大浓度为</span><span style="font-family: 'Times New Roman';font-size: 16px">650mg/kg</span><span style="font-family: 宋体;font-size: 16px">，最大超标倍数为</span><span style="font-family: 'Times New Roman';font-size: 16px">9.83</span><span style="font-family: 宋体;font-size: 16px">，最大污染深度为</span><span style="font-family: 'Times New Roman';font-size: 16px">16m</span><span style="font-family: 宋体;font-size: 16px">；锰超标率为</span><span style="font-family: 'Times New Roman';font-size: 16px">1.67%</span><span style="font-family: 宋体;font-size: 16px">，最大浓度为</span><span style="font-family: 'Times New Roman';font-size: 16px">26813mg/kg</span><span style="font-family: 宋体;font-size: 16px">，最大超标倍数为</span><span style="font-family: 'Times New Roman';font-size: 16px">1.68</span><span style="font-family: 宋体;font-size: 16px">，最大污染深度为</span><span style="font-family: 'Times New Roman';font-size: 16px">10m</span><span style="font-family: 宋体;font-size: 16px">。说明本项目场区土壤受到了较为严重的污染，有必要进行进一步的详细调查，确认具体污染情况。</span></p><p><span style="font-family: 宋体;font-size: 16px">（</span><span style="font-family: 'Times New Roman';font-size: 16px">2</span><span style="font-family: 宋体;font-size: 16px">）详细采样调查阶段土壤初步调查共检测了</span><span style="font-family: 'Times New Roman';font-size: 16px">786</span><span style="font-family: 宋体;font-size: 16px">个土壤样品，详细调查显示场地内土壤中存在锰、砷和六价铬超过《土壤环境质量建设用地土壤污染风险管控标准（试行）》（</span><span style="font-family: 'Times New Roman';font-size: 16px">GB36600-2018</span><span style="font-family: 宋体;font-size: 16px">）和《建设用地土壤污染风险筛选值和管制值》（</span><span style="font-family: 'Times New Roman';font-size: 16px">DB45/T2556-2022</span><span style="font-family: 宋体;font-size: 16px">）二类用地筛选值</span><span style="font-family: 'Times New Roman';font-size: 12px">245246</span><span style="font-family: 宋体;font-size: 16px">土壤详细调查结果显示砷超标率最高，为</span><span style="font-family: 'Times New Roman';font-size: 16px">13.23%</span><span style="font-family: 宋体;font-size: 16px">，最大浓度为</span><span style="font-family: 'Times New Roman';font-size: 16px">519mg/kg</span><span style="font-family: 宋体;font-size: 16px">，最大超标倍数为</span><span style="font-family: 'Times New Roman';font-size: 16px">7.65</span><span style="font-family: 宋体;font-size: 16px">，最大污染深度为</span><span style="font-family: 'Times New Roman';font-size: 16px">18m</span><span style="font-family: 宋体;font-size: 16px">；六价铬超标率次之，为</span><span style="font-family: 'Times New Roman';font-size: 16px">7.89%</span><span style="font-family: 宋体;font-size: 16px">，最大浓度为</span><span style="font-family: 'Times New Roman';font-size: 16px">28mg/kg</span><span style="font-family: 宋体;font-size: 16px">，最大超标倍数为</span><span style="font-family: 'Times New Roman';font-size: 16px">3.90</span><span style="font-family: 宋体;font-size: 16px">，最大污染深度为</span><span style="font-family: 'Times New Roman';font-size: 16px">12m</span><span style="font-family: 宋体;font-size: 16px">；锰超标率为</span><span style="font-family: 'Times New Roman';font-size: 16px">6.11%</span><span style="font-family: 宋体;font-size: 16px">，最大浓度为</span><span style="font-family: 'Times New Roman';font-size: 16px">14400mg/kg</span><span style="font-family: 宋体;font-size: 16px">，超筛选值最大倍数为</span><span style="font-family: 'Times New Roman';font-size: 16px">0.44</span><span style="font-family: 宋体;font-size: 16px">，最大污染深度为</span><span style="font-family: 'Times New Roman';font-size: 16px">14m</span><span style="font-family: 宋体;font-size: 16px">。因此，结合本项目初步调查数据，判断本地块土壤存在污染，其中主要超标因子为锰、砷和六价铬，均超过二类用地筛选值，根据《土壤环境质量建设用地土壤污染风险管控标准（试行）》（</span><span style="font-family: 'Times New Roman';font-size: 16px">GB36600-2018</span><span style="font-family: 宋体;font-size: 16px">）规定，应开展风险评估，确定风险水平，判断是否需要采取风险管控或修复措施。</span></p><p><strong><span style="font-family: 宋体;font-size: 16px"><span style="font-family:Times New Roman">3</span></span></strong><strong><span style="font-family: 宋体;font-size: 16px">、固体废物检测结果</span></strong></p><p><span style="font-family: 宋体;font-size: 16px">本次勘测发现本地块内埋藏有大量固体废物，最大埋深为</span><span style="font-family: 'Times New Roman';font-size: 16px">10m</span><span style="font-family: 宋体;font-size: 16px">，且在土壤污染调查过程中发现地块地下埋有固体废物。本次调查共检测了</span><span style="font-family: 'Times New Roman';font-size: 16px">133</span><span style="font-family: 宋体;font-size: 16px"><span style="font-family:宋体">个固体废物样品，检测显示部分属于危险废物，其余属于第</span><span style="font-family:宋体">Ⅱ一般类工业固体废物。</span></span></p><p><span style="font-family: 宋体;font-size: 16px">（</span><span style="font-family: 'Times New Roman';font-size: 16px">1</span><span style="font-family: 宋体;font-size: 16px">）危险废物本场地内固体废物酸浸检测结果显示，部分固体废物样品中硒超过《危险废物鉴别标准浸出毒性鉴别》（</span><span style="font-family: 'Times New Roman';font-size: 16px">GB5085.3-2007</span><span style="font-family: 宋体;font-size: 16px">）表</span><span style="font-family: 'Times New Roman';font-size: 16px">1</span><span style="font-family: 宋体;font-size: 16px">标准，根据《危险废物鉴别标准通则》（</span><span style="font-family: 'Times New Roman';font-size: 16px">GB5085.7-2019</span><span style="font-family: 宋体;font-size: 16px">）判断其属于危险废物。根据地勘资料与酸浸检测结果，经统计测算，本项目地面以下危险废物总方量为</span><span style="font-family: 'Times New Roman';font-size: 16px">543.09m</span><span style="font-family: 'Times New Roman';font-size: 10px">3</span><span style="font-family: 宋体;font-size: 16px">，最大分布深度为</span><span style="font-family: 'Times New Roman';font-size: 16px">2m</span><span style="font-family: 宋体;font-size: 16px">。</span></p><p><span style="font-family: 宋体;font-size: 16px">（</span><span style="font-family: 'Times New Roman';font-size: 16px">2</span><span style="font-family: 宋体;font-size: 16px"><span style="font-family:宋体">）</span><span style="font-family:宋体">Ⅱ类固废本场地内固体废物水浸检测结果显示，固体废物样品中硒、锰、氨氮和磷酸盐超《污水综合排放标准》（</span></span><span style="font-family: 'Times New Roman';font-size: 16px">GB8978-1996</span><span style="font-family: 宋体;font-size: 16px">）一级标准，超标率</span><span style="font-family: 'Times New Roman';font-size: 16px">66.9%</span><span style="font-family: 宋体;font-size: 16px">，根据《一般工业固体废物贮存、处置场污染控制标准》（</span><span style="font-family: 'Times New Roman';font-size: 16px">GB18599-2020</span><span style="font-family: 宋体;font-size: 16px"><span style="font-family:宋体">）判断其属于第</span><span style="font-family:宋体">Ⅱ类一般工业固体废物）。根据地勘资料与水浸检测结果，经统计测算，第Ⅱ类一般工业固体废物方量为</span></span><span style="font-family: 'Times New Roman';font-size: 16px">42268.12m</span><span style="font-family: 'Times New Roman';font-size: 10px">3</span><span style="font-family: 宋体;font-size: 16px">，最大分布深度为</span><span style="font-family: 'Times New Roman';font-size: 16px">10m</span><span style="font-family: 宋体;font-size: 16px">。</span></p><p><strong><span style="font-family: 宋体;font-size: 16px"><span style="font-family:Times New Roman">4</span></span></strong><strong><span style="font-family: 宋体;font-size: 16px">、废水和地下水检测结果</span></strong></p><p><span style="font-family: 宋体;font-size: 16px">（</span><span style="font-family: 'Times New Roman';font-size: 16px">1</span><span style="font-family: 宋体;font-size: 16px">）废水废水评价标准为《污水综合排放标准》（</span><span style="font-family: 'Times New Roman';font-size: 16px">GB8978-1996</span><span style="font-family: 宋体;font-size: 16px">）一级标准和《污水排入城镇下水道水质标准》（</span><span style="font-family: 'Times New Roman';font-size: 16px">GB/T31962-2015</span><span style="font-family: 宋体;font-size: 16px">）</span><span style="font-family: 'Times New Roman';font-size: 16px">B</span><span style="font-family: 宋体;font-size: 16px">级标准较严者，两个标准中没有的污染物参考上海市《污水综合排放标准》（</span><span style="font-family: 'Times New Roman';font-size: 16px">DB31/199-2018</span><span style="font-family: 宋体;font-size: 16px">）一级标准。检测结果显示本场地内遗留废水中存在色度、氨氮、</span><span style="font-family: 'Times New Roman';font-size: 16px">COD</span><span style="font-family: 宋体;font-size: 16px">、磷酸盐、硫酸盐、氟化物、锰和硒超标的情况。</span></p><p><span style="font-family: 宋体;font-size: 16px">（</span><span style="font-family: 'Times New Roman';font-size: 16px">2</span><span style="font-family: 宋体;font-size: 16px">）地下水地下水评价标准为《地下水质量标准》（</span><span style="font-family: 'Times New Roman';font-size: 16px">GB/T14848-2017</span><span style="font-family: 宋体;font-size: 16px"><span style="font-family:宋体">）</span><span style="font-family:宋体">Ⅳ类标准。检测结果表明。地块内</span></span><span style="font-family: 'Times New Roman';font-size: 16px">3</span><span style="font-family: 宋体;font-size: 16px">号地下水监测井地下水存在硒超标，最大超标倍数为</span><span style="font-family: 'Times New Roman';font-size: 16px">1.36</span><span style="font-family: 宋体;font-size: 16px">，其余监测井和监测指标未见超标。由于电解锰工艺技术路线中使用过二氧化硒等含硒化合物，在生产过程中可能导致硒进入地下水。</span></p><p><br/></p>