ICS13.080 CCSZ10DB4401 广州市地方标准 DB4401/T102.7—2023 建设用地土壤污染防治 第7部分：土壤污染风险评估技术规范 Soilpollutionpreventionandcontroloflandforconstruction— Part7:Technicalspecificationsforriskassessmentofsoilcontamination 2023-06-10发布 2023-07-10实施 广州市市场监督管理局发布 DB4401/T102.7—2023 I目  次 前言................................................................................III 引言.................................................................................II 1范围................................................................................1 2规范性引用文件......................................................................1 3术语和定义..........................................................................1 4工作程序和内容......................................................................2 4.1工作程序........................................................................2 4.2工作内容........................................................................3 5危害识别技术要求....................................................................4 5.1收集相关资料....................................................................4 5.2土壤污染状况调查回顾............................................................4 5.3确定关注污染物..................................................................5 6暴露评估技术要求....................................................................5 6.1分析暴露情景....................................................................5 6.2确定暴露途径....................................................................5 6.3计算土壤和地下水暴露量..........................................................6 6.4风险评估的模型参数..............................................................6 7毒性评估技术要求....................................................................8 7.1分析污染物毒性效应..............................................................8 7.2确定污染物相关参数..............................................................8 8风险表征技术要求....................................................................9 8.1一般性技术要求..................................................................9 8.2计算地块土壤和地下水污染风险....................................................9 8.3不确定性分析...................................................................10 9计算风险控制值的技术要求...........................................................10 9.1确定风险可接受水平.............................................................10 9.2计算地块土壤和地下水风险控制值.................................................10 10确定风险管控、修复目标的技术要求..................................................11 10.1风险管控、修复目标值的确定....................................................11 10.2确定风险管控、修复范围........................................................11 11后期环境管理建议..................................................................12 12报告编制..........................................................................12 12.1形式要求......................................................................12 12.2图表的要求....................................................................12 12.3报告格式......................................................................13 附录A（资料性）铅风险评估模型......................................................14 附录B（资料性）部分暴露评估模型....................................................19 附录C（资料性）风险评估模型参数及推荐值............................................21