113

4,350 千元

補助地方政府執行土壤、地下水污染整治相關工作

2024/01/01

2024/12/20

陳振豪

澎湖縣政府環境保護局

呂昆憲

亞太環境科技股份有限公司

土壤及地下水

污染查證 、 場址驗證 、 事業自主預防管理 、 農地土壤污染預防

Verification of contamination ,  prevention of agricultural soil pollution ,  prevention and managment of soil pollution in business ,  Site verification

楊孟樺

07-3928088#503

dawn@aetc.com.tw

摘要: 計畫工項包含監測井巡查維護、加油站稽查及測漏管調查、貯存系統查核輔導、污染改善完成場址驗證、農地土壤污染預防之環境勘查評估，分別摘要說明如下。 一、監測井巡查及維護修復作業 巡查針對呈現異常之監測井完成2口監測井外觀維護及1口監測井設施修復，另執行2口井況評估及再次完井，並進行 1口監測井異物排除及2口廢井作業。 二、加油站稽查及測漏管調查 於每月稽查顯示無異常；測漏管調查作業中，今年度已於113年4月17~20日執行完成18站（原為19站，其中北辰加油站已112年12月10日辦理歇業），其中大家加油站有PID超出1000 ppmV情形，因此進行測漏管土壤間隙氣體GC/FID定量分析，檢測結果甲苯數值為27.8 ppm，其他檢測結果為ND，依據貯存系統管理與查核作業手冊之污染潛勢判定原則判定，未達查證之必要性，建議於每月加油站稽查列重點查核站次。 三、貯存系統查核輔導 延續近2年之貯存系統查核輔導作業，今年度完成1處地下儲槽系統法規符合度確認及6處地上儲槽系統改善複查，已於8月全數執行完成。 四、污染改善完成場址驗證 湖西供油中心場址於113年2月提送改善完成報告，於113年4月16、23、24日進行土壤採樣2點位及地下水採樣4點位，檢測結果顯示土壤皆符合污染管制標準，監測井X00114地下水TPH檢測結果為11.4 mg/L超過管制標準，另地下水監測井X00030地下水之MTBE檢測結果為0.705 mg/L超過監測標準，驗證結果未通過，後續持續執行整治計畫，113年8月15日提送第2次改善完成報告，113年9月20召開改善完成報告審查會議，第二次驗證預計規劃於113年11月19日進場驗證。 五、農地土壤污染預防之環境勘查評估 本縣為無農田水利灌溉小組縣市，每鄉鎮市抽測1組為原則，本縣計有馬公市、湖西鄉、白沙鄉、西嶼鄉、望安鄉、七美鄉共6鄉鎮市，需進行6組土壤及水質抽測，於3月完成抽測前之6場環境勘查，現勘確認適合採樣之農地評估，並於4月完成土壤採樣，重金屬檢測結果均低於食用作物農地之管制標準或未檢出(N.D)，依八大重金屬權重計算結果，湖西鄉土壤重金屬濃度相較其他鄉鎮為高，複驗於6月26日完成採樣; 6處採樣用農地之灌溉水源均為自有民井，於5月27~18日及6月14日完成灌溉水採樣，各處農地灌溉水重金屬均遠低於灌溉水質基準或未檢出(N.D)，6處灌溉水導電度檢測結果均有超過灌溉水質基準，灌溉水複驗則於7月18日完成採樣，檢測結果重金屬均低於灌溉水質基準或未檢出(N.D)。 六、事業預防管理成效追蹤 配合推動事業自主監測及預防管理制度，於6月21日辦理B群事業自主預防管理作業說明會，向B群事業單位說明自主預防管理作業之相關流程及系統操作方式；B群事業部分於10月完成5家現地勘查進行現地確核，並就自主污染預防管理計畫內容提供修正建議；C群事業部分於8月13日前往台水公司馬公第二海水淡化廠及8月14日前往台水公司望安海水淡化廠辦理事業現場稽查，確認是否有製程異動或異常狀況。 七、土壤及地下水污染宣導活動 於6月20日辦理貯存系統法規重點與系統申報法規說明會，邀請對象為本縣貯存系統業者，就貯存系統管理辦法及申報作業等面向進行宣導，使各貯存系統業者具備更深入之認識；同日另辦理污染土地及相關場域推動太陽光電設置推廣說明會，邀請對象為現有污染場址之管理單位，以配合再生能源政策推廣太陽光電設置。   八、底泥查證工作 本縣轄內水體中，成功水庫、興仁水庫、東衛水庫、西安水庫、烏溝蓄水塘、七美水庫底泥品質定期檢測結果高於底泥品質指標上限值，本年度規劃於成功水庫、興仁水庫、東衛水庫3處水庫辦理底泥調查作業，針對3處水庫進行水質及底泥採樣，進行重金屬分析及底泥XRF篩測，已於113年4月底進行環境初步勘查評估，並於113年7月17~18日執行水質及底泥採樣，3處水庫有超過底泥品質指標上、下限值之情形，依底泥品質指標之分類管理及用途限制辦法規定，本次檢測結果應通知目的事業主管機關(即台灣自來水公司)，由台灣自來水公司依法規辦理後續作業。 九、公告事業審查及技師查核 北辰加油站本縣去年度僅有1件由北辰加油站提送土壤污染評估調查及檢測資料，因此該案簽證技師列為今年度技師查核作業對象，已於8月邀請委員進行書面審查，已於11月6號辦理線上缺失計點確認會。 十、最佳管理措施(BMPs)檢核作業 於場址改善進度報告審查會議時，檢閱改善單位是否執行最佳管理措施，為確認最佳管理措施是否落實執行，需辦理現場檢核作業；於9月20日前往湖西供油中心及馬公汽車加油站等場址及10月29日前往定遠營區，並請審查委員現場提供檢核建議，供改善單位後續推動參考。 十一、自主承諾工項-農地土壤之母質潛勢區 規劃進行0.1 N HCl萃取消化之土壤採樣分析，項目為鉻及鎳，採樣數量為馬公、湖西、白沙、西嶼等鄉鎮市各1點，每點均採至地表下1公尺深，每25公分為1樣本，共16個樣本；已於6月~9月底陸續完成採樣及分析，分析結果結合環境部農地土壤母質品質背景調查計畫成果，建立本縣農地土壤之母質潛勢區。

污染查證 、 場址驗證 、 事業自主預防管理 、 農地土壤污染預防

113年度澎湖土水定稿(全).pdf

19MB

「113 年度澎湖縣土壤及地下水污染調查及查證工作計畫」期末報告定稿本

2025/1/14 上午 12:00:00

Project Summary This project items include monitoring well inspections and maintenance, storage system audits and surveys, pollution remediation site verification, and environmental assessments for soil pollution prevention in agricultural lands. The tasks are summarized as follows: 1. Monitoring Well Inspections and Maintenance Inspections and maintenance were carried out on 2 monitoring wells, including exterior maintenance and facility repairs for one well. Additionally, assessments were conducted for 2 wells, which were re-completed, and work was done to remove foreign objects from 1 well and abandon 2 others. 2. Gas Station Inspections and Leak Detection Pipe Surveys Monthly inspections showed no abnormalities. A leak detection survey was completed in April 2024 at 18 stations (originally 19, with Beichen Gas Station closing in December 2023). One station had PID readings exceeding 1000 ppmV, so a soil gap gas analysis was conducted, revealing toluene levels of 27.8 ppm, with other results being non-detectable (ND). Based on the pollution potential determination guidelines, further verification was deemed unnecessary, but monthly inspections will continue with priority on this station. 3. Storage System Audits and Guidance Continued storage system audits over the past two years, completing 1 underground tank system regulatory compliance check and 6 aboveground tank system improvement re-inspections, all of which were completed by August. 4. Pollution Remediation Site Verification The Huxi Oil Supply Center submitted its remediation completion report in February 2024, with soil and groundwater sampling conducted in April. The results showed that soil samples met pollution control standards. However, the groundwater tests showed TPH levels of 11.4 mg/L (exceeding control standards) and MTBE levels of 0.705 mg/L (exceeding monitoring standards). This verification did not pass, and the remediation plan will continue. A second completion report was submitted in August, and a second verification is scheduled for November 2024. 5. Environmental Assessment for Soil Pollution Prevention in Agricultural Lands Six towns and cities were surveyed for soil and water quality. The results showed that heavy metal levels were below the regulatory standards, with Huxi Township having higher concentrations of heavy metals. Irrigation water samples from six locations showed heavy metal levels below the irrigation water quality standards. Conducted re-verification of irrigation water in July, which showed heavy metals were below the standards or non-detectable (ND). 6. Tracking Business Prevention Management Effectiveness A workshop was held in June to explain the self-monitoring and prevention management procedures for businesses. In October, field inspections were conducted at 5 businesses, providing suggestions for improving their pollution prevention plans. Additional inspections of two seawater desalination plants were conducted to verify if there were any changes or abnormalities in their processes. 7. Soil and Groundwater Pollution Awareness Activities On June 20, a regulatory briefing on storage systems was held for local industry operators. A seminar was also conducted to promote solar photovoltaic installations at polluted sites, aligning with renewable energy policies. 8. Sediment Verification Work Regular sediment quality testing in reservoirs showed that sediment quality exceeded the upper limit of the quality index in some reservoirs. An environmental assessment was conducted in April 2024, followed by water and sediment sampling in July. The results showed that sediment quality exceeded the allowable limits in some reservoirs, and relevant authorities (Taiwan Water Corporation) were notified for further action. 9. Public Business Reviews and Technologist Audits In August, a review was conducted for the Beichen Gas Station’s soil pollution assessment, and an online meeting was held in November for deficiencies verification. 10. Best Management Practices (BMPs) Inspection Site inspections were carried out to ensure the implementation of best management practices. Visits were made to the Huxi Oil Supply Center, Magong Car Gas Station, and Dingyuan Military Camp, where suggestions were provided to improve future implementation. 11. Self-Commitment Project – Agricultural Soil Maternal Potential Zones Soil sampling and analysis were completed for 16 samples across several towns, with results contributing to the establishment of maternal potential zones for agricultural soil in the county.

Verification of contamination ,  prevention of agricultural soil pollution ,  prevention and managment of soil pollution in business ,  Site verification