The URL can be used to link to this page

Home My WebLink AboutUIC Annual Report FY2425 October 31, 2025 2024-2025 Underground Injection Control Annual Report CITY OF LAKE OSWEGO, OREGON WATER POLLUTION CONTROL FACILITY 1200-U PERMIT FOR STORMWATER UNDERGROUND INJECTION ANNUAL REPORT JULY 1, 20 24 TO JUNE 30, 20 25 Prepared for the Oregon Department of Environmental Quality October 31, 2025 CITY OF LAKE OSWEGO WATER POLLUTION CONTROL FACILITY (WPCF) 1200-U PERMIT##31668 FOR STORMWATER UNDERGROUND INJECTION ANNUAL REPORT JULY 1, 2024-JUNE 30, 2025 1 certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system,or those persons directly responsible for gathering the information,the information submitted is, to the best of my knowledge and belief,true,accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. &-1 M ha Bennett, City Manager Date City of Lake Oswego Lake Oswego UIC Annual Report FY2425 Page i TABLE OF CONTENTS ............................................................................................................................................................... II 1. Introduction .................................................................................................................................................. 1 2. Stormwater Monitoring ................................................................................................................................ 1 3. UIC Inventory ................................................................................................................................................ 3 3.1. Risk Categories ...................................................................................................................................... 3 3.2. Changes to UIC Risk Categories in FY2425 .............................................................................................. 3 3.3. Current Inventory .................................................................................................................................. 3 4. Spill Prevention and Response ...................................................................................................................... 4 5. Source Control and Maintenance .................................................................................................................. 4 5.1. Development ......................................................................................................................................... 4 5.2. Pre-Tre atment Improvements ................................................................................................................ 8 6. Other Activities ............................................................................................................................................. 8 7. Adaptive Management .................................................................................................................................. 8 8. References .................................................................................................................................................... 8 Appendix A. UIC Report Summary ......................................................................................................................... 9 LIST OF TABLES Table 1. UIC Sampling Results, FY2425 ........................................................................................ 1 Table 2. UIC Inventory Changes, FY1617 to FY2425 ..................................................................... 4 Table 3. UIC Inventory and Characteristics, FY2425 ..................................................................... 5 LIST OF FIGURES Figure 1. Lake Oswego UIC Locations .......................................................................................... 2 Figure 2. Lake Oswego UIC Facilities ............................................................................................ 5 Lake Oswego UIC Annual Report FY2425 Page ii ABBREVIATIONS ADT Average Daily Trips (per day) cu yd cubic yards DEQ Oregon Department of Environmental Quality FY Fiscal Year starting July 1, e. g.FY2425 means July 1, 2024 to June 30, 2025 LOFD Lake Oswego Fire Department MS4 Municipal Separate Storm Sewer System NPDES National Pollutant Discharge Elimination System SSO Sanitary Sewer Overflow SWMP Stormwater Management Program UIC Underground Injection Control WPCF Water Pollution Control Facility Lake Oswego UIC Annual Report FY2425 Page 1 1. INTRODUCTION On October 31, 2016, the Oregon Department of Environmental Quality (DEQ) issued a WPCF 1200-U Permit (#31668) to the City of Lake Oswego (City) for underground injection of stormwater. The City uses the UIC (Underground Injection Control) permit to manage stormwater disposal in areas with high infiltration rates (see Figure 1). The permit expires on November 30, 2025 and requires the City to comply with the Safe Drinking Water Act and the Oregon Groundwater Act. In addition, the permit requires the City to have a UIC stormwater management plan (SWMP). The permit and its associated SWMP are available on the City’s website on the stormwater webpage. 2. STORMWATER MONITORING From FY1718 to FY2223, annual stormwater samples were collected at UIC #22 at 5306 Jean Rd and UIC #4 at 16088 Boones Ferry Rd and analyzed for lead and pentachlorophenol. Both UICs are in pipesheds with commercial and residential uses, however the Jean Rd UIC was located next to a utility pole. In FY2324, the City decommissioned the UICs. For FY2324, the sampling locations were changed to UIC #16 at 15810 Twin Fir and UIC #8 at 15910 Quarry. The UIC at 15810 Twin Fir is on a neighborhood collector in a residential area. Utility poles, a source of pentachlorophenol, are on the same side of the road. The UIC at 15910 Quarry is located on a neighborhood collector in a high-density residential neighborhood next to a commercial area. The annual sampling was completed on October 30th, 2024 (see Table 1) during a storm with 0.70 inches of accumulated precipitation and 0.10 inches of precipitation in the previous 24 hours and with no precipitation for 7 hours prior to sampling. Lead and pentachlorophenol were detected at both sampling sites. To check for potential contamination, a blank is collected at the beginning of the sampling event and a replicate is collected at the Twin Fir sampling site. Lead and pentachlorophenol were not found in the blank sample thereby increasing confidence in the results of the regular samples. The action level for lead is 15 µg/L and the action level for pentachlorophenol is 1 µg/L. Neither sampling site exceeded these action levels. Table 1. UIC Sampling Results, FY2425 Storm Event Precipitation = 0. 70 Inches; Prev 24-hr Precipitation = 0. 10 Site ID Date Time Pentachloro - phenol (µg/L) Total Lead (µg/L) Water Temp (°C) Specific Conductivity (µS/cm) pH Dissolved Oxygen (mg/L) TDS, Field (mg/L) 15810 Twin Fir 10/30/24 12:00 0. 11 1. 0 10.5 27.5 7.40 9.94 24.8 15810 Twin Fir Rep 10/30/24 12:01 0. 11 1.0 NR NR NR NR NR 15910 Quarry Rd 10/30/24 11:30 0. 04 1.1 9.5 25.0 6.67 10.73 23.1 Field Blank 10/30/24 10:45 <0. 04 <1. 0 NR NR NR NR NR Notes: °C=degrees Celsius; µg/L=micrograms per liter; mg/L=milligrams per liter; NR = not recorded; TDS=Total Dissolved Solids (mg/L) Lake Oswego UIC Annual Report FY2425 Page 2 Figure 1. UIC Locations Figure 1. Lake Oswego UIC Locations Lake Oswego UIC Annual Report FY2425 Page 3 3. UIC INVENTORY The UIC permit requires that the City maintain a current inventory and document when UICs that have been decommissioned, discovered, and constructed each year. The inventory must contain items such as the vehicle trips per day and risk categories. 3.1. Risk Categories Risk categories are based on zoning, average daily trips (ADT), and the type of stormwater injected into the UIC (DEQ, 2019). For example, a UIC considered medium-risk because the ADT is less than 1,000 would be categorized as high-risk if it was located in an industrial area. Because the stormwater injected into the City’s UICs include street runoff, none of the UICs on the City’s permit are considered low-risk. To determine ADT, the City uses either the Institute of Traffic Engineers (ITE) Trip Generation Manual, as prescribed by the UIC permit (DEQ, 2016), and actual traffic counts. Annual traffic counts are completed for City streets on a rotational basis with arterials and collectors receiving more focus than local streets with low traffic volumes. 3.2. Changes to UIC Risk Categories in FY2425 The following updates were made due to changes in traffic count data: Traffic counts changed from medium to high-risk category observed at: • 3357 Lake Grove - Traffic counts updated in 2024 indicated an average daily volume of 1,077 vehicles. Applying a standard 1% annual growth factor results in an estimated current volume of 1,090 vehicles. • 6245 Lakeview - Traffic counts updated in 2024 indicated an average daily volume of 988 vehicles. Applying a standard 1% annual growth factor results in an estimated current volume of 1,010 vehicles. Decreased traffic counts, resulting in a change from high to medium-risk: • 4676 Quarry - Updated using trip generation models to account for the 30 homes that will contribute stormwater runoff to the nearby UIC. 3.3. Current Inventory In FY2425, the City managed 37 UICs within its jurisdiction, 19 of which were classified as high-risk. A current inventory of the City’s UICs, including their characteristics and any existing pretreatment measures, is presented in Table 3. This information is being used to prioritize required retrofits and decommissions in compliance with the City’s UIC permit. During the evaluation of UICs lacking pretreatment, it was determined that decommissioning some systems would be more cost-effective than upgrading accessory structures to incorporate pretreatment. Since applying for its UIC permit in FY1617, the City has identified six new UICs, incorporated three due to roadway jurisdiction transfers, and decommissioned ten systems (see Table 2). The City plans to decommission seven UICs in FY2526. They are located at 17607 Pilkington Rd, 5280 Rosewood St, Lakeview (6333, 6245, 6077), 102 5th St, and 17486 Redfern. Lake Oswego UIC Annual Report FY2425 Page 4 Table 2. UIC Inventory Changes, FY1617 to FY2425 Inventory Change1 Year Changed UIC # Street Address Latitude Longitude UIC Type2 Depth to GW Catchment Area3 A FY1920 42 5764 Kimball Ct 45. 4169 -122. 7360 DW 50 R-7. 5 Decom FY1920 40 16983 Canal Cir 45. 4028 -122. 7171 IT 7 R-7. 5 D FY2021 43 17336 Hunter Ct 45. 4009 -122. 7322 IT 10 R-5 D FY2021 44 17568 Erin Ct 45. 3995 -122. 7309 DW/IT 15 R-5 A FY2021 45 6020 Harrington Ave 45. 4076 -122. 7392 DW 90 R-7. 5 D FY2223 46 4574 Trillium Woods 4676 Oakridge Rd 45. 4109 -122. 7240 IT DW 2 R-5 D FY2223 47 4242 Lakeview Blvd 45. 4055 -122. 7357 IT 15 R-7. 5 A FY2324 48 5733 McEwan Rd 45. 3898 -122. 7357 DW 7 R-10 D FY2324 49 5280 Mandi Ln Rosewood 45. 4011 -122. 7310 IT 6 R-5 D FY2324 50 2750 Iron Mtn Rd 45. 4117 -122. 7049 IT 290 R-7. 5 Decom FY2324 3 16088 Boones Ferry 45. 4083 -122. 7205 DW 37 Commercial Decom FY2324 4 16088 Boones Ferry 45. 4087 -122. 7201 DW 32 Commercial Decom FY2324 5 16088 Boones Ferry 45. 4089 -122. 7195 DW 37 Commercial Decom FY2324 22 5306 Jean Rd 45. 3973 -122. 7301 DW 14 R-7. 5 Decom FY2324 27 16000 Lindsay Ct 45. 4001 -122. 7323 DW 15 R-5 Decom FY2324 28 16000 Lindsay Ct 45. 4000 -122. 7293 DW 15 R-5 Decom FY2324 38 5100 Upper Dr 45. 4044 -122. 7298 DW 45 R-2. 5 Decom FY2324 44 17568 Erin Ct 45. 3995 -122. 7309 DW/IT 15 R-5 Decom FY2324 14 3521 Lanewood 45. 4123 -122. 7121 IT 40 R-10 1 – A is added, D is discovered, Decom is decommissioned; 2 – DW is drywell, IT is infiltration trench; 3 – R5 are residential lots from 5,000 to 7,499 sq. ft, R7. 5 are residential lots from 7,500 sq. ft to 9,999 sq. ft 4. SPILL PREVENTION AND RESPONSE Procedures for responding to a spill remained static, however the contact list was updated due to staff changes for FY2425. Forty-four staff from the Lake Oswego Fire Department (LOFD) were trained on spill response and completed the NFPA 1500 Hazardous Material Identification and Spill Prevention course. Based on information provided by spill response staff, there were no UICs affected by reported spills in FY2425. 5. SOURCE CONTROL AND MAINTENANCE 5.1. Development There were no commercial or industrial projects submitted for land-use review that were located within a UIC pipeshed. Lake Oswego UIC Annual Report FY2425 Page 5 Figure 2. UIC Facility Map Lake Oswego UIC Annual Report FY2425 Page 6 Table 3.UIC Inventory, FY2425 DEQ UIC # Lake Oswego UIC # Lake Oswego Asset ID1 EPA Well Code Closest Address Latitude (NAD83) Longitude (NAD83) UIC Type2 UIC Depth (ft) UIC Diam/ Length (ft) Est Depth to GW bel UIC (ft)3 Contam. Soil/GW present Distance to Public or Non - Abandoned Priv. Well (ft) Well > 500 ft or 2yr Time of Travel to UIC Distance to Wetland (ft) Distance to Surface Water (ft) Pretreatment Measures4 ADT5 Catchment Area6 Risk Category 10573 1 E07D-114D 5D2 16575 Bonaire 45. 4063 -122. 7275 DW 15 4 47 N 3,846 Y 1,450 1,450 SCB 370 LDR Medium 10573 2 E07D-115D 5D2 4500 Oakridge 45. 4108 -122. 7219 DW 19 4 31 N 3,109 Y 1,093 1,093 PCBox 2,350 HDR High 10573 7 E08C-217D 5D2 4284 Oakridge 45. 4110 -122. 7198 DW 15 4 33 N 2,990 Y 1,571 1,571 SCB (2) 2,260 HDR High 10573 8 E08C-025D 5D2 15901 Quarry 45. 4109 -122. 7209 DW 16 4 34 N 3,085 Y 1,260 1,260 None 2,990 HDR High 10573 9 E08C-152D 5D2 4366 Sunset 45. 4074 -122. 7207 DW 13 4 26 N 1,805 Y 2,215 946 SCB 470 LDR Medium 10573 10 E08C-106D 5D2 3552 Upper 45. 4084 -122. 7125 DW 17 4 25 N 2,604 Y 3,123 635 None 1,700 LDR High 10573 11 E08D-038D 5D2 3357 Lake Grove 45. 4107 -122. 7103 DW 16 4 29 N 3,219 Y 2,446 825 SCB (2) 1,090 LDR High 10573 12 E08D-026D 5D2 3300 Upper 45. 4101 -122. 7108 DW 13 4 29 N 3,030 Y 2,646 640 None 1,700 LDR High 10573 13 E08D-086D 5D2 3000 Upper 45. 4111 -122. 7068 IT 14 4 27 N 3,030 Y 1,633 720 None 3,240 LDR High 10573 15 E08A-463D 5D2 3423 Lanewood 45. 4124 -122. 7109 DW 19 4 25 N 3,720 Y 2,326 650 PCBox 1,398 LDR High 10573 16 E08A-157D 5D2 15810 Twin Fir 45. 4118 -122. 7077 DW 19 4 19 N 3,747 Y 1,706 650 PCBox 1,720 LDR High 10573 17 E08A-171D 5D2 3333 Wembley Park 45. 4168 -122. 7102 DW 5 4 64 N 3,629 Y 2,263 643 SCB, PC Manhole 790 LDR Medium 10573 18 E10A-326D 5D2 31 Ladd 45. 4124 -122. 6623 DW 16 4 14 N 3,715 Y 5,177 497 SCB 410 MDR Medium 10573 20 E08C-008D 5D2 6333 Lakeview 45. 3925 -122. 7421 DW 12 4 37 N 5,758 Y 3,208 2,170 None 1,010 IP High 10573 21 E08C-001D 5D2 6245 Lakeview 45. 3933 -122. 7407 DW 12 4 37 N 5,303 Y 2,855 2,495 None 1,010 IP High 10573 23 E18A-287D 5D2 Tualata/Jean (5292 Jean) 45. 3973 -122. 7296 DW 15 4 16 N 2,784 Y 1,995 1,995 None 9,108 LDR High 10573 25 E18B-171D 5D2 17607 Pilkington 45. 3984 -122. 7324 DW 12 4 22 N 3,614 Y 1,231 1,231 PCM 5,710 IP High 10573 26 E18A-174D 5D2 5520 Willow 45. 3986 -122. 7323 DW 8 4 26 N 3,627 Y 1,171 1,171 NA 5,710 IP High 10573 29 E10A-386D 5D2 102 5th 45. 4169 -122. 6688 IT 2 20 6 N 4,386 Y 208 208 None 250 LDR Medium 10573 30 E03C-284D 5D2 275 Chandler 45. 4195 -122. 6806 IT 4 20 71 N 2,750 Y 913 792 PCBox 190 LDR Medium 10573 31 E03C-276D 5D2 320 Chandler 45. 4209 -122. 6799 IT 4 22 70 N 2,509 Y 602 578 PCBox 190 LDR Medium 10573 32 E04D-069D 5D2 1345 Chandler 45. 4201 -122. 6813 IT 4 22 69 N 2,445 Y 882 550 PCBox 190 LDR Medium Lake Oswego UIC Annual Report FY2425 Page 7 10573 33 E18C-088D 5D2 6077 Lakeview 45. 3936 -122. 7406 IT Unknown Unknown 18 N 2,424 Y 2,491 1,244 None 1,010 IP Medium 10573 34 E10A-215D 5D2 Ladd/Durham (43 Ladd) 45. 4121 -122. 6628 DW 5 4 20 N 5,014 Y 6,650 510 SCB 410 MDR Medium 10573 35 E03C-272D 5D2 1235 Andrews 45. 4246 -122. 6789 IT 5 55 92 N 1,490 Y 1,853 750 SCB 640 LDR Medium 10573 36 E07D-137D 5D2 4699-4511 Oakridge 45. 4106 -122. 7246 DW 5 400 45 N 3,326 Y 471 471 None 2,350 LDR High 10573 37 E17B-190D 5D2 17486 Redfern 45. 3991 -122. 7215 IT 2 1 20 N 1,429 Y 1,425 787 None 130 LDR Medium 10573 39 E08C-247D 5D2 4361 South Shore 45. 4063 -122. 7181 BMH ~6 Unknown 10 N 1,230 Y 1,978 405 None 6,750 LDR High 10573 41 E08C-264D 5D2 3569 Sunwood 45. 4111 -122. 7139 DW ~22 Unknown 24 N 3,160 Y 2,482 1,231 SCB 50 LDR Medium 10573 42 E07B-360D 5D2 5764 Kimball 45. 4136 -122. 7360 DW 12 4 50 N 1,070 Y 580 580 SCB 120 LDR Medium 10573 43 E18A-339D 5D2 17336 Hunter 45. 4009 -122. 7322 IT 4 270 10 N 505 Y 601 601 None 50 MDR Medium 10573 45 E07C-038D 5D2 6020 Harrington 45. 4076 -122. 7392 DW 12 4 90 N 1,347 Y 1,656 1,656 SCB (2) 120 LDR Medium 10573 46 E07D-224D 5D2 4574 Trillium Woods 4676 Quarry 45. 4109 -122. 7240 IT DW 6 519 2 N 1,017 Y 305 345 None 270 LDR Medium 10573 47 E08C-124D 5D2 4242 Lakeview Blvd 45. 4055 -122. 7205 IT 5 1340 15 N 252 (irrigation) Y 2,415 180 None 6,750 LDR High 10573 48 E18C-122D 5D2 5733 McEwan Rd 45. 3898 -122. 7357 DW 21 4 7 N 633 Y 3,215 481 2 inlets - 1 has none and 1 is a SCB 1,230 LDR/PF High 10573 49 DML04565 5D2 5280 Mandi Rosewood 45. 4011 -122. 7310 IT 4 89 6 N 1,595 Y 385 385 None 640 MDR Medium 10573 50 DML13354 5D2 2750 Iron Mtn Rd 45. 4117 -122. 7049 IT 4 Unknown 290 N 573 Y 327 127 None 3,141 LDR High 1 – City’s Asset Management ID; 2 – DW=Drywell , IT=I nfiltration Trench, BMH =B ottomless Manhole; 3 – Estimated distance between base of UIC and seasonal high groundwater based on USGS Portland Interactive map (Snyder, 2008) except in the downtown area, where static water level or depth of first water observations from known monitoring wells and geotechnical borings were used. (Snyder, D. T. , 2008. Estimated depth to ground water and configuration of the water table in the Portland, Oregon area. USGS Scientific Investigations Report 2008-5059); 4 – SCB =Sumped Catchbasin; SM=Sumped Manhole; OSM=Oil and Sediment Trapped Catchbasin ((≥3-ft sump with 90° elbow at outlet); PCM=Pollution Control Manhole; PCBox=Pollution Control Box (snout with sump <3ft); None=N o Pretreatment; pretreatment; 5 – ADT=Average vehicle trips/day; 6 – LDR is Low Density Residential (Lots 7,500 sq. ft +); HDR is High Density Residential (Lots <3,000 sq. ft); GC is General Commercial; IP is Industrial Park; UIC added in current fiscal year. Risk category changed in current fiscal year based on new traffic counts. Red font are changes for FY2425. Lake Oswego UIC Annual Report FY2425 Page 8 5.2. Pre-Treatment Improvements The City is required to retrofit or otherwise protect all UICs by the end of its permit. The City uses sumps and snouts in catchbasins and manholes to reduce the possibility of non-stormwater discharges into its UICs. There were no pretreatment changes to the City’s UICs in FY2425. Street sweeping and catchbasin cleaning are completed by staff as part of the City’s UIC and NPDES MS4 permit obligations. The water quality parameters of the permit, pentachlorophenol and lead, adhere to solid particles and it is believed that street sweeping and cleaning of UICs and the associated infrastructure reduces these pollutant concentrations. For FY2425, the City swept 4,630 lane miles and collected approximately 1,107 cu yd of debris and 1,349 cu yd of leaf debris from stormwater infrastructure and streets. Public Works reported that 41 drywells and 37 inlets and catchbasins discharging to a UIC were inspected and cleaned in FY2425. No repairs were required. 6. OTHER ACTIVITIES While stormwater education is not specifically directed at neighborhoods with UICs, the City actively participates in three regional groups that promote stormwater awareness through television, print, and social media campaigns. Additionally, the City shares stormwater education content via its own social media platforms, newsletters, and events such as farmers markets. The City also provides financial support to three watershed councils engaged in restoration projects within city limits. City staff offer technical expertise to all three councils and regularly share information about potential private restoration projects with their executive directors. The UIC permit, SWMP, and annual report is posted on the City’s website. No comments were received by the public on the documents. There was a personnel and responsible official change from Sonja Johnson to Megan Charbonneau on January 13, 2025. 7. ADAPTIVE MANAGEMENT The City proposes only administrative changes as noted by the red font in the UIC Inventory table. 8. REFERENCES 2016, Oregon Department of Environmental Quality, Factsheet “Estimating Vehicle Trips per Day at Underground Injection Controls. ” 2019, Oregon Department of Environmental Quality, Factsheet “Fees for Underground Injection Control Program. ” APPENDIX A. UIC REPORT SUMMARY Underground Injection Control(UIC)Annual Report Applicant: City of Lake Oswego Permit Number': 31668 Applicant Street Address: 380 A Avenue, Box 369 File Number : 119429 Applicant City,State& Lake Oswego,OR 97034 Permit Year: July 1, 2024—June 30, Zip: 2025 Notes: 1) The permit number is located in the upper right-hand corner of the permit. 2) The file number is located in the upper right-hand corner of the permit Section A. Certification of Accuracy I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is,to the best of my knowledge and belief,true,accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Name: Martha Bennett Title: City Manager �C) 11as ,Sf i- ��' G Signature: Date: U Phone Email: M Bennett@ la keoswego.city Number: 503. 635. 0214 Notes: 1) Must be signed by the person identified in 40 CFR 144.32: htto•//www ecfr eov/c2i-bin/text-idx?tpl=/ecfrbrowse/Title4O/40cfr144 main 02.tol Lake Oswego UIC Annual Report FY2425 Page 9 Lake Oswego UIC Annual Report FY2425 Page 10 Section B. Stormwater Sampling 1. Did you collect any stormwater samples this year? Yes No If the answer is “yes”, then go to “2”. If the answer is no, go then go to “4” 2. Enter stormwater sample results (i. e. , pollutant concentrations) in the table below (attach additional pages, as necessary): UIC ID1 Sample Date B(a)p (µg/L) PCP (µg/L) DEHP (µg/L) Total Copper (µg/L) Total Lead (µg/L) Total Zinc (µg/L) #16 – 15810 Twin Fir 10/30/2024 12:00 PM NA 0. 11 NA NA 1.0 NA #16 – 15810 Twin Fir Rep 10/30/2024 12:01 PM NA 0. 11 NA NA 1.0 NA #8 15910 Quarry 10/30/2024 11:30 AM NA 0. 04 NA NA 1.1 NA Field Blank 10/30/2024 10:45 AM NA <0. 04 NA NA <1.0 NA 3. Did you collect the number of samples required in Schedule B, condition 2(a)? Yes No If the answer is “yes,” then go to Section C. In the answer is “no”, then go to “4” 4. Reason for not collecting stormwater sample(s) (check all that apply): Sampling not required this year (only applicable for first year of permit) Sampling discontinued in accordance with Schedule B, condition 2c (go to “5)2 Other (describe): 5. Do you certify that there have been no changes to site conditions that would significantly change stormwater quality?2 An example of a change is a new business that could potentially increase pollutant load to the UIC began operation at your site (for example, automotive repair facility): Yes No NA (check only if your permit was issued prior to March 2016) Section C. Action Level Exceedances 1. Did any pollutant concentrations exceed action levels?1 Check one box: Yes No If the answer is ”yes”, then go to “2”. If the answer is “no,” then go to Section D. 2. For each action level exceedance, discuss the actions from Schedule A, condition 6 that you took to address the exceedance (required), and the actions from Schedule A, condition 5 that you took to address the exceedance (if necessary). Lake Oswego UIC Annual Report FY2425 Page 11 Section D. Actions Not Completed. 1. Describe any actions in Schedule D, condition 4 of your permit that were not completed, and the reason they were not completed. The City’s permit was issued in October 2016. NOTES: If your permit was issued prior to March 2016, describe actions in your UIC Management Plan or Stormwater Monitoring Plan that you were not able to complete and why, and describe actions taken to implement the UIC Management Plan and proposed modifications to the Stormwater Monitoring Plan. Section E. UICs Closed, Retrofitted, Discovered or Installed 1. In the table below, identify UICs that were closed, retrofitted, discovered or installed during the year . Closed, Retrofitted, Discovered, or Installed Your UIC ID DEQ UIC ID1 Information About Discovered, Retrofitted and Installed UICs [This section needs to be filled out if: 1) the UCI is newly-installed or discovered, and (2) you are not submitting an addendum to your System-Wide Assessment that describes the newly-installed or discovered UIC] Latitude (decimal degrees NAD 83) Longitude (decimal degrees NAD 83) Type Code (“5D2” for stormwater, or “other”) Within 500 feet of a Water Well? (Yes/No) Within Two- Year TOT? (Yes/No) Vertical Separation Distance? (feet) If UICs were Retrofitted, describe HOW NOTES: Only enter the DEQ UIC ID for closed, retrofitted, or installed UICs. TOT = Time of Travel. See instructions (following this form) for information on how to determine whether a UIC is within a two-year TOT Section F. Future UIC Actions 1. Describe your known plans to install, modify, convert, or close any UICs in the next year. The City plans to decommission seven UICs in FY2526. They are located at 17607 Pilkington Rd, 5280 Rosewood St, Lakeview (6333, 6245, 6077), 102 5th St, and 17486 Redfern. Lake Oswego UIC Annual Report FY2425 Page 12 Section G. Key Personnel 1. Describe the key personnel positions responsible for the permit and their contact information Name of Person Responsible for Permit: Megan Charbonneau Title: Stormwater Quality Coordinator Mailing Address: 380 A Avenue, PO Box 369 Lake Oswego, OR 97034 Email Address: mcharbonneau@lakeoswego.city Phone Number: 503. 534. 2683 Business Section or City Department: Engineering Section H. Submittal Consult Schedule B, condition 4 or 5 of your permit to determine if you need to submit an electronic copy of this annual report, a hard copy of this annual report, or both. Email Electronic Copy To: UIC@deq.state.or.us Mail Hard Copy To: DEQ UIC Hydrogeologist 700 NE Multnomah Street Suite 600 Portland, Oregon 97232