<p style="text-indent: 32px; line-height: 1.5em;"><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">大石桥市东方化工有限公司</span></span><span style=";font-family:宋体;font-size:16px">地块</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">位于辽宁省大石桥市和平大街</span>1<span style="font-family:宋体">号，</span></span><span style="font-family: 宋体;font-size: 16px">地理位置中心坐标为</span><span style="font-family: 'Times New Roman';font-size: 16px">E122°</span><span style="font-family: 宋体;font-size: 16px"><span style="font-family:Times New Roman">31</span></span><span style="font-family: 'Times New Roman';font-size: 16px">′4</span><span style="font-family: 宋体;font-size: 16px"><span style="font-family:Times New Roman">8</span></span><span style="font-family: 'Times New Roman';font-size: 16px">.</span><span style="font-family: 宋体;font-size: 16px"><span style="font-family:Times New Roman">60</span></span><span style="font-family: 'Times New Roman';font-size: 16px">″</span><span style="font-family: 宋体;font-size: 16px">，</span><span style="font-family: 'Times New Roman';font-size: 16px">N40°</span><span style="font-family: 宋体;font-size: 16px"><span style="font-family:Times New Roman">37</span></span><span style="font-family: 'Times New Roman';font-size: 16px">′</span><span style="font-family: 宋体;font-size: 16px"><span style="font-family:Times New Roman">51.18</span></span><span style="font-family: 'Times New Roman';font-size: 16px">″</span><span style="font-family: 宋体;font-size: 16px">，</span><span style=";font-family:宋体;font-size:16px">地块</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">总占地面积</span>55979m²</span><span style=";font-family:宋体;font-size:16px">。</span><span style="font-size: 16px; font-family: 宋体;">该地块2003年之前为荒地，2003年被大石桥市东方化工有限公司购买作为工业用地，2004年建设完成并开始试运行生产，</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">采用</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">硫铁矿与废硫酸联合制酸装置</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">生产产品硫酸，大石桥市政府于</span>2018<span style="font-family:宋体">年实施了对东方化工原厂区的搬迁工作，目前东方化工搬迁工作已全部完成，地块内生产设备、建筑物等设施已拆除</span></span><span style=";font-family:宋体;font-size:16px">，</span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">2018</span><span style="font-family:宋体">年至今地块一直为闲置状态，</span></span><span style=";font-family:宋体;font-size:16px">地块内现堆放大量废镁碳砖、废镁碳砖渣及建筑垃圾，废镁碳砖、废镁碳砖渣主要来源于地块附近的耐火材料厂等，建筑垃圾主要为地块内各生产设施拆除后遗留</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">。</span></span></p><p style="text-indent: 32px; line-height: 1.5em;"><span style=";font-family:宋体;font-size:16px">通过对前期现场踏勘、资料收集、人员访谈、初步调查和详细调查</span><span style=";font-family:宋体;font-size:16px">等</span><span style=";font-family:宋体;font-size:16px">过程得到的数据和资料进行分析，得出如下结论。</span></p><h3 style="margin-top: 8px; margin-bottom: 8px; break-after: avoid; line-height: 1.5em;"><span style="font-size: 18px;"><strong><span style='font-family: "Times New Roman"; line-height: 150%;'>1、</span></strong><strong><span style="font-family: 宋体; line-height: 150%;">场地污染识别结论</span></strong></span></h3><p style="text-indent: 32px; line-height: 1.5em;"><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">通过资料收集和审阅，现场踏勘，调查采访等方式</span></span><span style=";font-family:宋体;font-size:16px">，</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">得出该场地污染识别结论如下：</span></span></p><p style="text-indent: 32px; line-height: 1.5em;"><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">地块污染源主要为</span></span><span style=";font-family:宋体;font-size:16px">硫酸</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">生产过程使用的原辅材料</span></span><span style=";font-family:宋体;font-size:16px">、</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">产生污染物</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">及</span></span><span style=";font-family:宋体;font-size:16px">产品硫酸</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">对土壤环境造成的污染。根据对原设施及其分布情况的了解，对地块潜在污染区域进行识别与划分潜在污染区域包括</span></span><span style=";font-family:宋体;font-size:16px">原料储存区、生产区、成品酸储存区、废气治理区、废水治理区、</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">固体废物贮存区</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">等。关注污染物：重金属、</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">土壤理化性质</span>pH</span><span style=";font-family:宋体;font-size:16px">、</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">石油烃（</span>C₁₀</span><span style=";font-family:'Times New Roman';font-size:16px">-C₄₀</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">）、挥发性有机物、半挥发性有机污染物等。</span></span></p><h3 style="margin-top: 8px; margin-bottom: 8px; break-after: avoid; line-height: 1.5em;"><span style="font-size: 18px;"><strong><span style="line-height: 150%;"><span style="font-family:Times New Roman">2、</span><span style="font-family: 宋体;">土壤调查结论</span></span></strong></span></h3><p style="text-indent: 32px; line-height: 1.5em;"><span style="font-family: 宋体;font-size: 16px">对</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">大石桥市东方化工有限公司</span></span><span style=";font-family:宋体;font-size:16px">地块</span><span style="font-family: 宋体;font-size: 16px">进行了初步调查及详细调查，地块内两期共布设土壤点位</span><span style="font-family: 宋体;font-size: 16px"><span style="font-family:Times New Roman">49</span></span><span style="font-family: 宋体;font-size: 16px">个，共采集分析土壤样品</span><span style="font-family: 宋体;font-size: 16px"><span style="font-family:Times New Roman">147</span></span><span style="font-family: 宋体;font-size: 16px">个，地块外两期</span><span style="font-family: 'Times New Roman';font-size: 16px"><span style="font-family:宋体">共布设</span>1<span style="font-family:宋体">个</span></span><span style="font-family: 宋体;font-size: 16px">对照点，</span><span style="font-family: 宋体;font-size: 16px">共采集分析土壤样品</span><span style="font-family: 宋体;font-size: 16px"><span style="font-family:Times New Roman">1</span></span><span style="font-family: 宋体;font-size: 16px">个</span><span style="font-family: 宋体;font-size: 16px">。检测指标包括</span><span style="font-family: 宋体;font-size: 16px"><span style="font-family:宋体">重金属（</span><span style="font-family:Times New Roman">8</span><span style="font-family:宋体">项）、挥发性有机物（</span><span style="font-family:Times New Roman">27</span><span style="font-family:宋体">项）、半挥发性有机物（</span><span style="font-family:Times New Roman">11</span><span style="font-family:宋体">项）、</span><span style="font-family:Times New Roman">pH</span><span style="font-family:宋体">及石油烃（</span><span style="font-family:Times New Roman"></span></span><span style='text-indent: 32px; text-wrap-mode: wrap; font-family: "Times New Roman";'>C₁₀</span><span style='text-indent: 32px; text-wrap-mode: wrap; font-family: "Times New Roman";'>-C₄₀</span>_{<span style="font-family: 宋体;font-size: 16px;vertical-align: sub"><span style="font-family:Times New Roman"></span></span>}<span style="font-family: 宋体;font-size: 16px">）</span><span style="font-family: 宋体;font-size: 16px">。通过分析检测结果得出以下结论：</span></p><p style="text-indent: 32px; line-height: 1.5em;"><span style="font-family: 宋体;font-size: 16px">两期土壤调查共检出</span><span style="font-family: 'Times New Roman';font-size: 16px">4<span style="font-family:宋体">种</span></span><span style="font-family: 'Times New Roman';font-size: 16px"><span style="font-family:宋体">污染物</span></span><span style="font-family: 宋体;font-size: 16px">超过</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">《土壤环境质量</span> <span style="font-family:宋体">建设用地土壤污染风险管控标准（试行）》（</span>GB3660-2018<span style="font-family:宋体">）第一类用地筛选值</span></span><span style="font-family: 宋体;font-size: 16px">，均为重金属污染物，主要为砷、铅</span><span style=";font-family:宋体;font-size:16px">、钒、镍。</span></p><p style="text-indent: 32px; line-height: 1.5em;"><span style=";font-family:宋体;font-size:16px">两期土壤调查</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">地块内砷共有</span>40</span><span style=";font-family:宋体;font-size:16px">个</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">点位，共</span>108<span style="font-family:宋体">个样品超标，超标率为</span><span style="font-family:Times New Roman">73.5</span></span><span style=";font-family:'Times New Roman';font-size:16px">%</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">，最大检测浓度为</span>3389</span><span style=";font-family:'Times New Roman';font-size:16px">mg/kg</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">，最大超标倍数为</span>168.45<span style="font-family:宋体">，</span></span><span style=";font-family:宋体;font-size:16px">最大浓度样品出现在</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">初步调查</span></span><span style=";font-family:宋体;font-size:16px">阶段</span><span style=";font-family:'Times New Roman';font-size:16px">12#</span><span style=";font-family:宋体;font-size:16px"><span style="font-family:宋体">（</span><span style="font-family:Times New Roman">0.3</span></span><span style=";font-family:宋体;font-size:16px">～</span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">0.5</span></span><span style=";font-family:'Times New Roman';font-size:16px">m</span><span style=";font-family:宋体;font-size:16px">）</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">，主要位于</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">油罐</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">区域</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">；</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">地块内</span></span><span style=";font-family:宋体;font-size:16px">铅</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">共有</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">13</span><span style="font-family:宋体">个</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">点位，共</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">24</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">个样品超标，超标率为</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">16.3</span></span><span style=";font-family:'Times New Roman';font-size:16px">%<span style="font-family:宋体">，最大检测浓度为</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">1889</span></span><span style=";font-family:'Times New Roman';font-size:16px">mg/kg<span style="font-family:宋体">，最大超标倍数为</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">3.72</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">，</span></span><span style=";font-family:宋体;font-size:16px">最大浓度样品出现在</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">初步调查</span></span><span style=";font-family:宋体;font-size:16px">阶段</span><span style=";font-family:'Times New Roman';font-size:16px">12#</span><span style=";font-family:宋体;font-size:16px"><span style="font-family:宋体">（</span><span style="font-family:Times New Roman">0.3</span></span><span style=";font-family:宋体;font-size:16px">～</span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">0.5</span></span><span style=";font-family:'Times New Roman';font-size:16px">m</span><span style=";font-family:宋体;font-size:16px">）</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">，主要位于</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">油罐</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">区域</span></span><span style=";font-family:宋体;font-size:16px">；</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">地块内</span></span><span style=";font-family:宋体;font-size:16px">钒</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">共有</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">3</span><span style="font-family:宋体">个</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">点位，共</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">4</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">个样品超标，超标率为</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">2.7</span></span><span style=";font-family:'Times New Roman';font-size:16px">%<span style="font-family:宋体">，最大检测浓度为</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">389</span></span><span style=";font-family:'Times New Roman';font-size:16px">mg/kg<span style="font-family:宋体">，最大超标倍数为</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">1.36</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">，</span></span><span style=";font-family:宋体;font-size:16px">最大浓度样品出现在</span><span style=";font-family:宋体;font-size:16px">详细调查阶段</span><span style=";font-family:'Times New Roman';font-size:16px">T</span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">12</span><span style="font-family:宋体">（</span><span style="font-family:Times New Roman">1.7</span></span><span style=";font-family:宋体;font-size:16px">～</span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">1.9</span></span><span style=";font-family:'Times New Roman';font-size:16px">m</span><span style=";font-family:宋体;font-size:16px">）</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">，主要位于</span></span><span style=";font-family:宋体;font-size:16px">机修车间</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">区域</span></span><span style=";font-family:宋体;font-size:16px">；</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">地块内</span></span><span style=";font-family:宋体;font-size:16px">镍</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">共有</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">1</span><span style="font-family:宋体">个</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">点位，共</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">1</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">个样品超标，超标率为</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">0.68</span></span><span style=";font-family:'Times New Roman';font-size:16px">%<span style="font-family:宋体">，</span></span><span style=";font-family:宋体;font-size:16px">超标</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">浓度为</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">292</span></span><span style=";font-family:'Times New Roman';font-size:16px">mg/kg<span style="font-family:宋体">，超标倍数为</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">0.95</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">，</span></span><span style=";font-family:宋体;font-size:16px">超标样品出现在</span><span style=";font-family:宋体;font-size:16px">初步调查阶段</span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">1#</span><span style="font-family:宋体">（</span><span style="font-family:Times New Roman">0.3</span></span><span style=";font-family:宋体;font-size:16px">～</span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">0.5</span></span><span style=";font-family:'Times New Roman';font-size:16px">m</span><span style=";font-family:宋体;font-size:16px">）</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">，主要位于</span></span><span style=";font-family:宋体;font-size:16px">废渣堆存</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">区域</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:宋体">。通过估算，本地块内污染土方量约为</span><span style="font-family:Times New Roman">156429.8m³</span></span><span style=";font-family:宋体;font-size:16px">。</span></p><p style="text-indent: 32px; line-height: 1.5em;"><span style=";font-family:宋体;font-size:16px">综上所述，</span><span style=";font-family:宋体;font-size:16px">本</span><span style=";font-family:宋体;font-size:16px">地块内</span><span style=";font-family:宋体;font-size:16px">重金属</span><span style=";font-family:宋体;font-size:16px">超标较重，主要超标因子</span><span style=";font-family:宋体;font-size:16px">为砷，汞、钒次之，说明地块内存在较大范围重金属砷超标，局部范围重金属铅、钒、镍超标</span><span style=";font-family:宋体;font-size:16px">，污染较重的区域主要为油罐、</span><span style=";font-family:宋体;font-size:16px">库房、料棚、原料储存区、成品酸储存、机修车间、电瓶酸车间、净化装置、沉淀池及废渣堆存区等</span><span style=";font-family:宋体;font-size:16px">区域，</span><span style=";font-family:宋体;font-size:16px">超标原因可能为</span><span style=";font-family:宋体;font-size:16px">本地块生产时所用原料硫精矿中含有硫、铁、砷、铅、锌、镉等元素，硫精矿的长期堆存及使用，可能通过</span><span style=";font-family:宋体;font-size:16px">大气沉降、降雨淋溶、土壤迁移等方式，导致地块内多处重金属出现超标。根据两期调查结果，本地块土壤存在污染，后期需要展开风险评估。</span></p><h3 style="margin-top: 8px; margin-bottom: 8px; break-after: avoid; line-height: 1.5em;"><span style="font-size: 18px;"><strong><span style="line-height: 150%;"><span style="font-family:Times New Roman">3、</span><span style="font-family: 宋体;">地下水调查结论</span></span></strong></span></h3><p style="text-indent: 32px; line-height: 1.5em;"><span style=";font-family:宋体;font-size:16px">对</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">大石桥市东方化工有限公司</span></span><span style=";font-family:宋体;font-size:16px">地块</span><span style=";font-family:宋体;font-size:16px">进行了初步调查及详细调查，地块内两期共布设地下水点位</span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">20</span></span><span style=";font-family:宋体;font-size:16px">个，共采集分析地下水样品</span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">20</span></span><span style=";font-family:宋体;font-size:16px">个，</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">地块外两期分别布设</span>1<span style="font-family:宋体">个对照点，共布设</span><span style="font-family:Times New Roman">2</span><span style="font-family:宋体">个对照点</span></span><span style=";font-family:宋体;font-size:16px">。检测指标包括</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">色度、浑浊度、</span>pH<span style="font-family:宋体">、总硬度、溶解性总固体、氯化物、铁、锰、铜、锌、铝、</span></span><span style=";font-family:宋体;font-size:16px">钠、总大肠菌群、菌落总数、</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">挥发性酚类、阴离子表面活性剂、耗氧量、硝酸盐、亚硝酸盐、氨氮、氟化物、碘化物、氰化物、汞、砷、硒、镉、铬（六价）、铅、硫化物、硫酸盐、三氯甲烷、四氯化碳、苯、甲苯</span></span><span style=";font-family:宋体;font-size:16px">、石油类</span><span style=";font-family:宋体;font-size:16px">。通过分析检测结果得出以下结论：</span></p><p style="text-indent: 32px; line-height: 1.5em;"><span style=";font-family:宋体;font-size:16px">两期地下水调查中</span><span style=";font-family:宋体;font-size:16px">所有地下水样品均有不同程度的超标</span><span style=";font-family:宋体;font-size:16px">，主要超标因子为</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">色度、浑浊度、溶解性总固体、硫酸盐、氯化物、总硬度、耗氧量、氨氮、氟化物、挥发酚、</span></span><span style=";font-family:宋体;font-size:16px">钠、</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">铝、锰、铁、</span></span><span style=";font-family:宋体;font-size:16px">铜、锌、</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">砷、</span></span><span style=";font-family:宋体;font-size:16px">硒、镉、</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">铅</span></span><span style=";font-family:宋体;font-size:16px">、</span><span style=";font-family:宋体;font-size:16px">汞、硫化物、苯等</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">共</span>24</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">种</span></span><span style=";font-family:宋体;font-size:16px">，超过</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">《地下水质量标准》（</span>GBT14848-2017<span style="font-family:宋体">）中</span><span style="font-family:Times New Roman">Ⅲ</span><span style="font-family:宋体">类用水标准限值要求</span></span><span style=";font-family:宋体;font-size:16px">。</span></p><p style="line-height: 1.5em;"><span style=";font-family:宋体;font-size:16px">结合</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">地块外</span>2<span style="font-family:宋体">个地下</span></span><span style=";font-family:宋体;font-size:16px">水对照点检测结果，本地块内</span><span style=";font-family:宋体;font-size:16px">地下水中</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">色度、</span></span><span style=";font-family:宋体;font-size:16px">浑浊度、氨氮、</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">溶解性总固体、硫酸盐，氯化物，总硬度、耗氧量、</span></span><span style=";font-family:宋体;font-size:16px">挥发酚、</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">硝酸盐</span></span><span style=";font-family:宋体;font-size:16px">、</span><span style=";font-family:宋体;font-size:16px">铁、锰、铝、铅</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">等</span></span><span style=";font-family:宋体;font-size:16px">超标可能</span><span style=";font-family:宋体;font-size:16px">源于</span><span style=";font-family:宋体;font-size:16px">该区域</span><span style=";font-family:宋体;font-size:16px">背景较高原因</span><span style=";font-family:宋体;font-size:16px">，</span><span style=";font-family:宋体;font-size:16px">该区域内</span><span style=";font-family:宋体;font-size:16px">工业企业较多，可能为地下水各污染因子超标的原因；另外，</span><span style=";font-family:宋体;font-size:16px">本地块生产时所用原料硫精矿中含有硫、砷、铁、铅、锌、镉、铜及氟等元素，硫精矿的长期堆存及使用，可能通过</span><span style=";font-family:宋体;font-size:16px">大气沉降、降雨淋溶、土壤迁移等方式，导致地块内地下水中</span><span style=";font-family:宋体;font-size:16px">铜、锌、</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">砷、</span></span><span style=";font-family:宋体;font-size:16px">镉、硫化物、氟化物等出现超标，产生污染</span><span style="font-family: 宋体;font-size: 16px">情况；本地块周围</span><span style="font-family: 'Times New Roman';font-size: 16px">1km<span style="font-family:宋体">范</span></span><span style="font-family: 宋体;font-size: 16px">围内共存在</span><span style="font-family: 'Times New Roman';font-size: 16px">3</span><span style="font-family: 宋体;font-size: 16px">家企业生产过程中会产生含汞废气，该企业距离本地块较近，含汞废气的长期排放</span><span style=";font-family:宋体;font-size:16px">，可能通过</span><span style=";font-family:宋体;font-size:16px">大气沉</span><span style="font-family: 宋体;font-size: 16px">降、降雨淋溶、土壤迁移等方式，对本地块产生影响，导致地块内地下水中汞出现超标。根据两期调查结果，本地块地下水存在污染，后期需要展开风险评估。</span></p><p><br/></p>