SRP 1,1-DCA COMPASS GW Site Summary for New Jersey

This GIS layer is based on a SQL query of the groundwater HAZSITE data that resides in COMPASS for each active Site Remediation case. Once the raw groundwater HAZSITE data is extracted from COMPASS, it is summarized such that a maximum concentration for the contaminant is derived for the year preceeding the last sampling event (samp_last_max_conc) and a maximum concentration is also generated for all sampling events (all_max_conc) . Each active Site Remediation case is included in the GIS layer. The GIS layer symbology is based on the the maximum concentration for the year preceeding the last sampling event for that contaminant as summarized in the evaluation field and further categorized in the s_value field. Symbology is represented as follows: no data submitted, not sampled, non-detect (ND), detected below standard, reporting limit > standard, 1 - 10 times the standard, 10 - 100 times the standard, 100 - 1000 times the standard and greater than 1000 times the standard. The standard is the NJDEP Ground Water Quality Standard and/or MCL for this contaminant. For the HAZSITE data, there are a number of considerations that need to be taken into account when using this GIS layer for decision making purposes:- Not all SRP cases have provided HAZSITE data to the Department or HAZSITE data that has been provided to the Department may be incomplete;- Additional sampling may have been conducted since the last round of HAZSITE data was submitted that has not yet been provided as HAZSITE data is only required with key document submittals;- HAZSITE data that was submitted may not have been provided in the correct format and therefore could not be uploaded into the COMPASS data repository and would therefore not be returned via the COMPASS SQL query.本GIS图层基于对COMPASS系统中存储的、针对每个在办场地修复案件的地下水HAZSITE数据执行的SQL查询结果构建。从COMPASS系统提取原始地下水HAZSITE数据后，将对其进行汇总处理：针对污染物，计算最后一次采样事件前一年的最大浓度（samp_last_max_conc），同时生成所有采样事件的最大浓度（all_max_conc）。所有在办场地修复案件均纳入该GIS图层。本GIS图层的符号系统基于评估字段中汇总的、对应污染物最后一次采样事件前一年的最大浓度，并通过s_value字段进行进一步分类。符号系统的分类如下：未提交数据、未采样、未检出（non-detect, ND）、检出浓度低于标准、报告限值高于标准、标准值1-10倍、标准值10-100倍、标准值100-1000倍以及标准值1000倍以上。此处标准为针对该污染物的新泽西州环境保护部（New Jersey Department of Environmental Protection，NJDEP）地下水质量标准及/或最大污染物水平（Maximum Contaminant Level，MCL）。针对HAZSITE数据，在使用本GIS图层进行决策时，需注意以下若干事项：- 并非所有SRP（Site Remediation Program）案件均已向主管部门提交HAZSITE数据，且已提交的HAZSITE数据可能存在不完整的情况；- 自上一轮HAZSITE数据提交以来，可能已开展额外采样工作，但此类数据尚未提交，因HAZSITE数据仅在提交关键文件时才需上报；- 已提交的HAZSITE数据可能未采用正确格式，因此无法上传至COMPASS数据仓库，进而无法通过COMPASS的SQL查询获取该部分数据。