EPA-98-G102-02-203

098

5,389 千元

2009/02/24

2009/12/31

林威州

土污基管會

張良麗

中興工程顧問股份有限公司

土壤及地下水

高污染潛勢地區,地下水質調查,監測井管理；高污染潛勢地區

Potential polluted area, Groundwater investigation, Monitoring well management

林威州

02-27698388#10807

willy@mail.sinotech.com.tw

本計畫主要協助環保署辦理高污染潛勢地區地下水質調查、研訂監測井管理措施及地下水人工補注水源水質標準等工作。有關高污染潛勢地區地下水質調查，本計畫篩選27處工業區及2處科學園區區內及區外1公里範圍內共70口監測井進行地下水質採樣檢測，發現中壢工業區之三氯乙烯及樹林工業區之氯乙烯、順-1,2-二氯乙烯超出地下水污染管制標準，建議列為後續污染查證及持續監測管理重點。而一般項目則以氨氮超過監測基準之比例最高。其他重金屬、持久性有機污染物、柴油總碳氫化合物等項目則皆未超出管制值；重金屬微量元素部分，銦未檢出，鉈僅一測站僅出0.000003mg/L(與偵測極限同)，鎵的測值介於0.00371～0.0452mg/L之間，鉬則介於0.000019～0.00139mg/L之間。 監測井管理部分，本計畫以Mann-Kendall統計方式完成全國10大地下水分區，共431口區域性監測井之水質趨勢分析，建議調降其中301口監測井之監測頻率由1年4次至1年2次。此外，亦協助環保署研訂完成廢井作業規範、場置性地下水監測井設置及後續處理處置原則，及整合各單位監測資訊之作業要點及具體配套作法。 研訂地下水人工補注水源水質標準部分，經蒐集全國10大地下水分區之地下水抽用及天然補注現況、飲用水水源水質保護區、自來水水質水量保護區等區位資訊及台灣自來水公司各自來水分區處實際抽用地下水情況，並參酌國外相關地下水人工補注作法及水質標準後，建議採人工加壓式灌注者應符合飲用水水質標準，採天然重力式補注者應符合飲用水水源水質標準，如引用來源屬污水經處理再利用者，另需符合污水經處理後注入地下水體水質標準。此外，為避免地下水補注對一般水質造成衝擊，將納入「灌溉用水水質標準」之電導度、總氮量之測項標準，並針對後續實施補注工作應採行之配套方案提出相關規劃。

高污染潛勢地區,地下水質調查,監測井管理；高污染潛勢地區

EPA98G10202203.zip

18MB

2010/3/1 上午 12:00:00

This project was to assist the EPA in investigating groundwater quality of high potential polluted area, developing management measures of monitoring wells and the water quality standards of artificial recharge. This project selected 70 monitoring wells in 27 industrial parks and 2 science parks with a distance within 1 km inside and outside to sample and test the groundwater quality. The results showed that trichloroethylene in Chung-li Industrial Estate, Vinyl chloride and cis-1, 2-Dichloroethylene in Shu-lin Industrial park exceeded the Groundwater pollution control standards. It was suggested to conduct follow-up inspections and continuous monitoring. The highest percentage of generally items exceeded the monitoring standards was Ammonia nitrogen. Other items such as heavy metals, persistent organic pollutants and total petroleum hydrocarbons didn’t exceed the control value. For the trace elements of heavy metals, no indium was found; the value of thallium was 0.000003mg/L（the same with detection limit） found in only one monitoring well; the value of gallium was between 0.00371~0.0452mg/L, and the value of molybdenum was between 0.000019~0.00139mg/L. For the management of monitoring wells, this project performed the trend analysis of groundwater quality of 431 regional monitoring wells in 10 national groundwater districts by Mann-Kendall Test. It was suggested to lower the monitoring frequency of 301 regional monitoring wells from four times to two times a year. Furthermore, we assisted the EPA in revising the Draft of Operations Specification of Abandonment of Groundwater Monitoring Wells, the Principles of Setting Site-Specific Monitoring Wells and Follow-Up Treatment, and integrating the operational guidelines and practical plans of monitoring data of various monitoring units. For establishing the water quality standard of artificial recharge source, we collected the information of present status of pumping and natural groundwater recharge, the drinking water source protection areas, the tap-water water source quality and volume protection areas in 10 national groundwater districts, and the actual status of groundwater pumping reported by the branches of Taiwan Water Corporation. We also referred to the methods of groundwater recharge and water standards in foreign countries. According to different recharge purposes, areas, water resources, and methods, we suggested selecting existing and applicable regulations and standards, and to provide relevant schemes in accordance with follow-up groundwater recharge activity.

Potential polluted area, Groundwater investigation, Monitoring well management