"109 Years of Soil and Groundwater Pollution Investigation and Verification Work Plan-Nantou County", mainly for the important prevention and control of soil and groundwater pollution within the jurisdiction of Nantou County. This year's work targets include the county's underground storage tank system application review and on-site inspection. Counseling; interviews and verifications of factories with high pollution potential; inspection and maintenance of groundwater monitoring wells in the jurisdiction and regular monitoring of groundwater quality to maintain the functions of monitoring wells to accurately grasp the current status of groundwater quality and pollution concentration changes in the jurisdiction; The site conducts regular inspections to implement relevant control measures and monitors the implementation of pollution improvement, and cooperates with the site pollution improvement to complete the verification operation. The improvement effect has been confirmed; assist the Environmental Protection Agency to strengthen the promotion of soil and groundwater to the public announcement business, underground storage tank system operators and professional organizations Relevant laws and regulations publicity, education and training; and this year, environmental education will be implemented in elementary and middle schools, and through campus publicity activities to promote the importance of soil and groundwater environmental protection, the goal of sustainable use of soil and groundwater resources in Nantou County has been achieved.
In this regard, the Environmental Protection Bureau of the Nantou County Government (hereinafter referred to as the Environmental Protection Bureau), in order to continuously monitor the soil and groundwater pollution in its jurisdiction, entrusted Asia Pacific Environmental Technology Co., Ltd. (hereinafter referred to as Asia Pacific Company) to implement the "109 Annual Soil and Groundwater Pollution" Investigation and Verification Work Plan-Nantou County" (hereinafter referred to as this plan). The execution period of this plan is from the contract start date (January 1, 109) to December 20, 109, and is stipulated in 109 The final report shall be sent before November 15th The overall work progress is in compliance with the contract requirements, but the underground storage tank system soil and groundwater pollution verification work does not have the urgency of entering the site for verification. Therefore, after discussing with the Environmental Protection Agency, in order to ensure the effective use of resources and funds, the implementation of the change has been stagnated in the county The investigation of the soil and groundwater pollution scope of the Yuyou gas station at the site, and the remaining unexecuted work funds will be returned in accordance with regulations.
The main work content of this plan can be divided into eight major projects, including groundwater monitoring well inspection and maintenance operations and water quality monitoring operations, underground storage tanks oil and gas detection and verification operations, publicly announced business land verification work, and groundwater contaminated restricted use areas in the county-monitoring type Natural attenuation monitoring operations, the construction of the hydrogeological conceptual model of the source of heavy metal chromium pollution in Nangang Industrial Zone, the verification of soil and groundwater pollution sites, professional meetings, education and training and publicity of land and water business, public complaints or emergency response work, and other coordination matters Other key tasks, the following summarizes the implementation of each work item.
1. Groundwater monitoring well inspection and maintenance operations and water quality monitoring operations
(1) Abandoned well operation
According to the contract content, three abandoned wells were completed, and M00076 (Dayi Industry), M00095 (Taiyi Machinery) and M00191 (Mingtan Gas Station) were completed this year. M00076 Because Dayi Industrial did not handle the construction of a new factory building, it issued a document requesting the handling of abandoned wells. M00095 used to investigate the source of trichloroethylene pollution at the Anshun site; it was assessed that the well was no longer necessary for monitoring, so it was abandoned. M00191 The monitoring well is an abandoned well because the pollution improvement at the site of Mingtan Gas Station has been completed and there is no subsequent monitoring demand.
(2) Inspection and maintenance of monitoring wells
The inspection and maintenance operations of monitoring wells have completed 202 wells in the first quarter (49 wells), second quarter (49 wells), third quarter (49 wells) and fourth quarter (55 wells) of 109. Other maintenance operations include the completion of 13 sub-monitoring well body photography and micro-water test operations; after regular inspection results, the appearance of the monitoring wells that need to be maintained is selected to perform the appearance maintenance of 6 monitoring wells and the repair of 3 monitoring wells. The quarterly inspection records are uploaded to the SGM system in accordance with regulations.
(3) Setting up new standard monitoring wells
The installation of monitoring wells has been completed on September 28 and 29 this year. They are M00224 (before No.126, Section 3, Zhangnan Road), M00225 (beside Guangyou Palace, Lane 138, Section 3, Zhangnan Road) and M00226 (independent). One road next to the ring), and completed the sampling and inspection operations of the monitoring wells after the newly established wells on November 15.
2. Oil and gas detection and verification of underground storage tanks
According to the contract work content, this plan has already handled on-site counseling inspections for gas stations with missing inspections last year before submitting the mid-term report. Last year, all the improvement tasks were completed in the previous year for on-site counseling and improvement of missing gas stations.
(1) On-site inspection of underground storage tanks
On-site inspection and guidance operations, 95 gas stations in operation and 1 military gas station in operation have been completed before April 30 this year; a total of 96 underground storage tanks on-site inspection operations, 11 of which are soil gas monitoring wells The label is unclear, one station is oil stains in the anti-seepage facility at the bottom of the refueling, the soil gas monitoring well monitoring operation is not performed monthly at one station, and the effective depth of the soil gas monitoring well at one station is insufficient.
(2) Leak detection tube function test and oil and gas detection
Gas station leak detection pipe function test and oil and gas detection operations, the screening list is based on on-site inspections and previous declaration data to screen those who may have potential for pollution or have not implemented two gas stations in the past three years. Shengtai has been implemented on July 30 this year The gas station and Zhutai gas station totaled 2 stations; the PID/FID detection results were all lower than the legal warning value (500ppm), so after discussing with the Environmental Protection Agency, the original verification work funding was changed to the new corridor section of the stagnant site 1458 Investigation of the area of soil and groundwater pollution by the site number (Yuyou gas station).
(3) Investigation of the scope of soil and groundwater pollution in Xinlang Section 1458 (Yuyou Gas Station)
The scope of soil and groundwater pollution in Xinlang Section No. 1458 (Yuyou Gas Station) was investigated. Soil sampling was conducted at 5 points. Groundwater sampling was conducted at 1 standard monitoring well and 2 existing simple wells. The soil test results are similar to the previous survey results; the main pollution was concentrated in the oil tank area and the pipeline area near the monitoring well M00108, and no pollution was detected in the remaining areas. The sampling and testing results of groundwater monitoring wells and simple wells did not detect any circumstances exceeding relevant standards.
3. Announcement and verification of business land
This year, we completed assisting 9 pieces of soil pollution investigation and evaluation report review for the declaration of Articles 8 and 9 of the Soil Pollution Law. Among them, 2 items were stipulated in Article 8 and 7 items were stipulated in Article 9.
According to the soil pollution investigation and evaluation reports submitted over the years, cases exceeding the monitoring standards have been detected. The on-site inspections include Quanyi Electric Factory Co., Ltd. (hereinafter referred to as Quanyi Electric), Mingxing Enterprise Co., Ltd. (hereinafter referred to as Mingxing Enterprise) and Deru Co., Ltd. (hereinafter referred to as Deru Company), selected Deru Company and this year’s case Yongsheng Metal Co., Ltd. (hereinafter referred to as Yongsheng Metal) to conduct soil pollution verification operations. On-site sampling has been carried out on September 24 this year. ; A total of 5 points of soil sampling and testing, Deru company detected 1 point of soil heavy metal nickel 155 mg/kg exceeding the monitoring standard; Yongsheng Metal 3 points of soil did not exceed the relevant standards.
4. Areas where the use of groundwater in the county is restricted by pollution-monitoring natural attenuation monitoring operations
(1) Regular monitoring of monitoring wells
According to the contract work content, it is estimated that a total of 10 sampling inspections will be carried out during the high and low water period this year, and 10 sampling inspections during the low and high water period will be completed in March and July respectively. Regular monitoring wells include M00041, M00098, M00169, M00178 and M00218, only M00178 monitoring well detected 0.0343 mg/L of trichloroethylene exceeding the monitoring standard during the low water period; the test result of this well was reduced to below the monitoring standard during the high water period; the trichloroethylene concentration of the remaining monitoring wells was lower than the relevant standard, others The concentration change trend of the test item is roughly similar to the test results over the years.
(2) Bacteria phase analysis
According to the contract content, 2 sub-monitoring wells are required to perform groundwater microbial phase analysis. This year, during the dry season sampling period, two monitoring wells M00041 and M00178 will be used for microbial phase groundwater sampling. According to the test results, 2 sub-groundwater microbes A small amount of bacteria that can metabolize trichloroethylene aerobicly was found. In the number of dead and live bacteria, more live bacteria were detected in monitoring well M00041.
5. Hydrogeological conceptual model of heavy metal chromium pollution source in Nangang Industrial Zone
(1) Sampling and testing of monitoring wells
According to the contract content, the heavy metal chromium pollution potential area was screened. High concentration monitoring wells were detected over the years, including monitoring wells such as M00118, M00165 and M00213. Sampling and testing were performed regularly during dry and high water periods. This plan promised to add more monitoring wells at the selection meeting M00221. This year, the dry and rainy seasons were completed in March and July respectively; a total of 8 sampling and testing operations were performed. Monitoring well M00213 detected chromium at 0.512 mg/L exceeding the control standard during the dry season; during the wet season, it was reduced to 0.413 mg/L, which was higher than the monitoring standard. In the dry season, M00165 detected chromium at 0.339 mg/L and 0.268 mg/L. According to the monitoring standards, chromium was detected at 0.124 mg/L and 0.125 mg/L in the dry and high water periods of M00118, while no chromium was detected in M00221. The results are roughly similar to those of previous years.
(2) Civil well sampling and testing
According to the potential area of heavy metal chromium pollution, this plan will conduct a private well interview survey near Lane 138, Section 3 of Zhangnan Road during March 16th; and based on the private well interview survey results, we will screen out locations with high concentrations of M104- W07 conducted sampling and testing operations at M104-W01, a place where people are more frequently contacted. The test results showed that chromium was detected at 0.07 mg/L and 0.08 mg/L during dry and high water periods in M104-W01; and 0.224 was detected in M104-W07 during dry and high water periods. The mg/L and 0.20 mg/L exceed the drinking water source water quality standards and are similar to the results detected over the years. Tap water has been used in this area, and the groundwater of the private wells is only used for daily irrigation and washing purposes and is not used for drinking.
(3) Hydrogeological conceptual model establishment and pollution transmission simulation
This project is to build a conceptual hydrogeological model of the area; at the beginning of the project, 5 self-recording water level gauges will be placed on January 2 to confirm the flow of groundwater in the area and whether the area has been inspected by humans. According to the simulation results of pollution transmission, the pollution clusters in this area move west to east; the PHT3D model simulates the chromium metal in groundwater that is prone to hexavalent chromium deposition in the downstream area. The past M00165 (NK07) monitoring well was detected by MT3DMS in 1998. The highest concentration is 1.09 mg/L; as the initial concentration of pollution transmission, it simulates the change trend of pollution concentration during the period from 1998 to 114 in the Republic of China; the simulation results still exceed the second type of groundwater control standards in the downstream area in the Republic of China in 114.
6. Verification of soil and groundwater pollution sites
As of December 14, 109, there were 4 sites under management in this county; 2 sites for control, 1 site for restricted use of contaminated groundwater, and 1 site under Article 7 and 5 regulations.
This year, the delisting sites have been completed, including the control sites of Niuyunbori Farmland 28-14, 28-15, etc. (the delisting of Fushou Huan Shui Zi No. 1092157292 on September 21, 109) and the Seven Articles Five stipulates that the management site of Shangquanxin Co., Ltd. is 1 (No. 1090272696 of Fushui Huan Shui Zi No. 1090272696 was released from management on November 30, 109).
The verification of the tube site site will be implemented this year in Niuyunbori 28-14, 28-15 and other two land numbers, Shangquanxin Co., Ltd. (hereinafter referred to as Shangquanxin Company), and Dagang Section 522 and 523 (below) (Referred to as Gaorun Company) and other 4 sites.
(1) Niuyunbori 28-14, 28-15 and other 2 land numbers
Niuyunbori farmland carried out the first verification sampling test on May 13 this year; soil sampling and testing were completed at 8 points on the same day, and it was detected in Niuyunbori 28-14, A hill block S02 (depth 90~120 cm) Lead 349 mg/kg exceeded the monitoring standard; S04 (depth 180~210 cm) detected 637 mg/kg exceeding the control standard.
The location exceeding the control standard did not meet the improvement target; the improvement unit carried out re-improvement work on May 28; after performing self-verification to confirm that it was below the improvement standard, it was notified to perform the re-verification operation, and the re-verification operation was carried out on June 10 to re-improve area 2 Point sampling inspection; according to the inspection results show that it meets the improvement goals.
(2) Shangquanxin Co., Ltd.
The verification operation of Shangquanxin Company carried out sampling inspection on October 16; the sampling operation was completed at 8 points on the same day, and the inspection results were all lower than the site improvement target.
(3) 522 and 523 Dagang Section (Gaorun Company)
The verification operation of Gaorun Company carried out sampling inspection on November 9th; two sampling operations were completed on the same day, and the inspection results were all lower than the site improvement target.
7. Professional meetings, education and training, and publicity of land and water business
This year, due to the severe special infectious pneumonia (COVID-19) epidemic, the legal promotion and explanation meeting and campus promotion activities were suspended in the first half of the first half due to the large number of participants. All activities are The application will start after July in the second half of the year.
(1) Internal education and training
Two sessions were completed this year on April 16 and November 6 respectively.
(2) Legal promotion briefing
According to the contract, it is necessary to handle two relevant laws and regulations promotion and explanation meetings. This year, the underground storage tank laws and regulations promotion and explanation meeting will be completed on September 4 and the soil and groundwater Article 8 and Article 9 laws and regulations will be completed on November 4. A total of 162 people participated in the seminar.
(3) Campus promotion activities
According to the contract, ten campus publicity activities are required. The ten soil and groundwater pollution prevention and control campus publicity activities were completed in July and September respectively. This year, a total of 576 participants were selected for the publicity activities in rural primary schools.
(4) Special exhibition on the 20th anniversary of the Soil and Groundwater Pollution Remediation Law
Cooperate with the Soil Pollution Management Committee of the Environmental Protection Department of the Executive Yuan from October 21 to 26 this year to assist in the "Hear, See Soil and Water, Taiwan Makes a Sound" Special Exhibition on the 20th Anniversary of the Soil and Groundwater Pollution Remediation Law.
8. Public complaints or emergency response work
This year, no complaints from the public and emergency response work have been received. Emergency response funding is 200,000 yuan; after discussion with the Environmental Protection Agency, we should support the handling of Niuyunhou 28-14 and 28-15 for the management of 2 sites, pollution improvement external verification operations, and expenditures of 1.7 million yuan. One hundred and ten yuan (178,290) and the remaining twenty thousand and one thousand and one ten yuan (21,710).
