The main work items of the "112 Taipei City Soil and Groundwater Pollution Investigation and Verification Work Plan" include inspection and maintenance of groundwater monitoring wells and groundwater monitoring, supervision and inspection of contaminated sites, supervision and verification of storage system sites and their management, and public announcements Projects such as review and verification of submitted materials under Articles 8 and 9, soil survey of rural bases, underground storage tank inspection and monitoring and confirmation of compliance with storage system regulations, soil and water conservation publicity, law and regulation publicity briefings, public complaints and emergency response, etc. Through the implementation of the plan, we hope to ensure the quality of the city's soil and groundwater and prevent pollutants from harming public health through the soil and groundwater pathways.
The planned performance period is from January 1, 2020 to December 20, 2020. A summary of the work completed in the plan is as follows.
1. Monitoring well maintenance management and monitoring
(1) Inspection and maintenance of groundwater monitoring wells
A total of 54 inspections of 17 regional and 10 site monitoring wells have been completed in the first and second half of the year, and inspections of the appearance of the monitoring wells, maintenance of the surrounding environment, and internal functional inspections of the monitoring wells have been performed during the inspections; 1 inspection of A00029 ( Beitou District Cleaning Team) monitoring well lock point replacement well facility repair work; completed A00002 (Minsheng Elementary School), A00004 (Dongmen Elementary School (Taipei City)) and A00123 (Neihu Incineration Plant Entrance) Appearance maintenance work for 3 secondary monitoring wells.
(2) Internal assessment operations of groundwater monitoring wells
5 well condition assessments (in-hole photography and micro-water test) have been completed, including 3 sub-regional monitoring wells and 2 sub-site monitoring wells; 5 well re-completions and foreign matter removal work have been completed, confirmed The well pipe is restored to cleanliness.
(3) Groundwater monitoring operations
Six monitoring wells have completed groundwater monitoring operations. Among them, the arsenic measurement value of monitoring well A00047 (agricultural land near Daye Road (W2) in Guandu Plain) exceeded the groundwater pollution monitoring standards; A00046 (agricultural land near Daye Road (W2) in Guandu Plain) exceeded the groundwater pollution monitoring standard; W1)), A00048 (Farmland in Guandu Plain near Daye Road (W3)) and A00049 ((Farmland in Guandu Plain near Daye Road (W4))) monitoring wells have arsenic measurement values ??exceeding groundwater pollution control standards, and it is inferred that This is caused by the geological environment background factors in the Beitou area; in addition, there are also general items in the area such as total dissolved solids, ammonia nitrogen, total organic carbon, etc. that exceed the groundwater pollution monitoring standards. The items that exceed the standards are consistent with the monitoring results over the years.
2. Storage system review and management
(1) A total of 53 storage system inspections and inspections were completed (including the storage systems discovered during the inspection and inspection by the team). Among the missing items, 12 above-ground storage tanks were not equipped with spill prevention facilities and did not have adequate equipment to prevent leakage.
(2) A review of 17 storage system improvements has been completed. Except for the overflow dike height of Chunghwa Telecom-Dongyi Machine Room, which is still less than 50 centimeters (the operator has contracted manufacturers to improve it), the remaining 16 areas have been improved and are in compliance with regulations.
(3) On-site inspections of underground storage tanks, performance tests of leak detection pipes, oil and gas detection and cathodic corrosion protection have been completed at 89 stations, of which leak detection pipes failed to function in a total of 8 stations, including Songshan Airport Aviation Fuel Center and National Wende Gas Stations , Neihu Station Gas Station, Nangang Gas Station, Songshan Road Gas Station, Neihu Lishan Street Gas Station, Uni-President Neihu One Station Gas Station, and Zhenxing Medical Foundation Jinxing Hospital all requested the station to improve and strengthen management on site. , and the follow-up improvements have been completed during the second declaration in 2012; the underground storage tank inspection results of China Trust Financial Park and Uni-President Neihu Station Gas Station FID value exceeded the warning value and methane was measured in the soil interstitial gas, among which China Trust Because there is a concrete barrier layer under the surface of the financial park, sampling cannot be carried out, and the enterprise has been asked to investigate and respond after its own investigation. The soil and groundwater of the Uni-President Seiko Neihu Station Gas Station meet the control standards. It is speculated that the leak detection pipe is not next to the septic tank. , exceeded the standard due to the influence of biogas; the FID value of the National Civil Rights Gas Station exceeded the warning value and the soil interstitial gas measured methane and MTBE. The verification results showed that the soil TPH of the National Civil Rights Gas Station exceeded the soil pollution control standard; 110 was applied for Sunshine Jianbei Gas Station The compliance confirmation and guidance work for the newly installed underground storage tanks since 2009 has been carried out, and the results are all in compliance with the regulations.
3. Investigation and verification of soil and groundwater on land used by notified enterprises or other businesses with potential pollution, as well as pastoral bases and agricultural lands
XRF screening operations for 41 pastoral bases have been completed. Among them, the heavy metal zinc XRF screening values ??of Municipal Wenshan Kindergarten, United Hospital Linzhongkun Campus and Municipal Zhishan Elementary School exceeded the soil pollution monitoring standards for edible crop farmland, so full soil heavy metal analysis operations were carried out. Among them, the heavy metal zinc in the soil of Municipal Wenshan Kindergarten and Municipal Zhishan Elementary School exceeded the soil pollution monitoring standard for edible crop farmland.
4. Agricultural land and business pollution prevention operations
(1) Agricultural land pollution prevention
It has completed farmland sampling and XRF screening operations for 26 irrigation groups in pollution early warning areas, 6 groups of preliminary irrigation water quality inspections, 1 group of irrigation water quality retests, and 48 groups of resin package surveys; among them, the irrigation group "Beitou" heavy metal arsenic and " The heavy metal arsenic XRF screening value of "Li'an 2" exceeds the soil pollution monitoring standard for edible crop farmland. It is speculated that this is caused by the irrigation team's work in the arsenic-rich area of ??the Guandu Plain; the XRF screening value of heavy metal zinc in "Dongxinzhuangzi" exceeds the edible crop farmland soil pollution monitoring standard. According to local soil pollution monitoring standards, it is speculated that it may be affected by the type of fertilizer or irrigation water quality; the initial conductivity of the water quality of the irrigation group "Beitou" and "Group 11 Drainage Area 2" exceeded the irrigation water quality benchmark value, because "Group 11" Drainage District 2" Farmland Water Conservancy said that the channel is not used as irrigation water, so the irrigation team "Beitou" was selected to carry out water quality re-inspection in Zhenzhou, and based on the soil screening results, the water quality was selected and analyzed for heavy metals copper, zinc, chromium and arsenic. , the water quality re-test results were all lower than the irrigation water quality benchmark value.
(2)Business pollution prevention
It has completed 1 pre-departure briefing on preventive management operations, 1 self-directed preventive management publicity briefing, and on-site survey operations for 7 Group A businesses, and selected Jiangjun Industrial Co., Ltd. and Haoming Enterprise Co., Ltd. based on the on-site survey results. Soil verification operation, the verification results show that the heavy metal copper and TPH of Haoming Enterprise Co., Ltd. exceed the soil pollution control standards; 11 group B inspections have been completed, and the on-site conditions are consistent with the independent pollution prevention management plan, so there is no need to adjust the grouping; 25 have been completed Group C is currently conducting survey operations. Among them, Factory 202 of the Production and Manufacturing Center of the National Defense Armaments Administration and the Sanitary Sewerage Engineering Office of the Taipei City Government Works Bureau (Dihua Sewage Treatment Plant) use lubricating oil or hot kerosene due to process requirements. It is a storage system management method that regulates substances, and the storage state is a sealed storage container that will not leak when inverted. Therefore, it is not classified as a managed state. Although the surface of the storage area is intact and not damaged, in order to avoid oil leakage and inversion contamination, Therefore, it is recommended to upgrade Group B to improve independent pollution prevention management.
5. Simultaneous soil sampling survey of edible crop fields
Nine simultaneous soil samplings of farmland crops have been completed. Since the crop analysis results were all lower than the heavy metal limit standards for rice, full soil heavy metal analysis was not performed.
6. Site management and inspection operations
There are four sites in this city's annual plan, and it is planned to inspect the sites listed under management once a month. Among them, Chang'an Gas Station has been announced to be delisted; the remaining three sites are all in the pollution improvement stage.
7. Campus and other soil and water conservation publicity activities and regulatory briefings
We have conducted 4 publicity activities on campus soil and water conservation, 2 seed teacher training courses, 2 publicity briefings on laws and regulations related to storage facilities, 1 briefing on promotion, guidance, matching and installation of solar photovoltaics, and 2 BMPs inspection meetings.
8. Emergency response and handling of public complaints
Completed 4 emergency response operations, soil survey in the third section of the Dahu Section in Neihu District, 0194-0000, and the results showed that the XRF screening results were all lower than the soil pollution monitoring standards for edible crop farmland; the second section of the Public Training Section in Wenshan District, Taipei City, 0071- Soil pollution verification at land numbers 0000 and 0198-0000 showed that the TPH exceeded the soil pollution control standards; soil pollution verification at a small section of Tammei Section in Neihu District, Taipei City 0218-0005 showed that the TPH was below the soil pollution control standards; Monga The soil pollution verification of the sustainable sugarcane garden showed that the heavy metals arsenic, copper, cadmium, and zinc at the sampling points S02 and S03 exceeded the soil pollution control standards for edible crops, and the heavy metal chromium at the sampling point S02 exceeded the soil pollution monitoring standards for edible crops.
