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23-105365-ANK SP_ Soil Sampling_Report_12.27.23GEOTECHNICA L ENGINEERING ENVIRONMENTAL ENGINEERING CONSTRUCTION TESTING & INSPECTION 825 Center Street, Suite A, Tacoma, Washington 98409 • (253) 939 2500• FAX (253) 939-2556 With Offices Serving the Western United States &A S S O C I A T E S , I N C . October 3,2023 KA Project No.064-23022 Page 1 of 4 Mr.Asgedom Woldetekle AKA Family Care Tel:(206)228-3360 29850 18th Avenue South Email:akafamilycare@gmail.com Federal Way, WA 98003 RE:Letter Report for Soil Sampling ANK Short Plat –Soil Sampling 29850 18th Ave South, Federal Way, Washington, 98003 Dear Mr.Woldetekle, Krazan and Associates (Krazan)is providing this Letter Report in reference to limited sampling of soil at the referenced address located in Federal Way,Washington.Sample collection was conducted by Krazan representative Mr.Jessep Englert on September 13, 2023. This sampling was performed in accordance with state regulatory requirements, and was limited to the client-defined subject area located at 29850 18th Avenue South, Federal Way, Washington.Contaminant of concern (COC) analysis and number of samples were based on the Tacoma Smelter Plume Guidance documentation provided by the Washington State Department of Ecology (WDOE). 1.0 ANALYTICAL RESULTS 1.1 Project Scope Based on sampling requirements,thirty-one (31)discrete soil samples were collected in an evenly distributed grid-like pattern to best characterize the site and one (1) composite duff sample, consisting of six (6) duff sub-samples,was collected beneath the client defined tree assumed to be staying on site. 1.2 Sampling Methodology The samples were collected by carefully collecting thirty-one (31) discrete soil samples with a clean stainless-steel sampler with the composite duff sample being mixed in a stainless-steel container. The samples were placed in clean glass sample containers provided by the laboratory.Sample containers were then placed in an iced cooler for transportation to the laboratory.The sampling instrument was treated between samples with a rinsate wash to decontaminate the tool and minimize the potential cross contamination of subsequent samples, with all rinsate wash returned to the Krazan lab for proper disposal. Data pertinent to the sample (e.g., date,sample number, analytical procedures) was recorded on a chain- of-custody form. 1.3 Laboratory Analysis A total of thirty-one (31)discrete soil samples and one (1) composite duff sample were collected from the site and delivered to Libby Environmental Laboratory in Olympia, Washington,and Onsite Environmental, Inc. in Redmond, Washington,under chain-of-custody protocol for analysis.Libby Environmental Laboratory and Onsite Environmental Laboratory are Washington State-accredited laboratories.As per client specifications,the sample was analyzed for Total Arsenic and Total Lead by KA Project 064-23022 October 3, 2023 Page 2 KRAZAN & ASSOCIATES, INC. With Offices Serving the Western United States method EPA 6010D.The Laboratory analytical data report and chain-of-custody form are provided in Appendix A. 1.4 Laboratory Sample Results Table 1 includes the sample number, sample location, sample description,and analyte concentrations for the arsenic and lead analyses. Table 1 –Summary of Analytical Data Sample Number Sample Location Sample Depth (inches) Sample Material Description Arsenic (As)Lead (Pb) KA-01 47.334308°,-122.311340°0-6 Discrete Soil 11.0 28.0 KA-02 47.334306°,-122.311170°0-6 Discrete Soil 18.0 60.0 KA-03 47.334304°,-122.310992°0-6 Discrete Soil 13.0 54.0 KA-04 47.334304°,-122.310808°0-6 Discrete Soil <11.0 36.0 KA-04B 47.334304°,-122.310808°6-12 Discrete Soil <11.0 31.0 KA-05 47.334302°,-122.310641°0-6 Discrete Soil <11.0 29.0 KA-06 47.334295°,-122.310416°0-6 Discrete Soil <11.0 29.0 KA-07 47.334281°,-122.310232°0-6 Discrete Soil <11.0 67.0 KA-08 47.334192°,-122.310083°0-6 Discrete Soil <11.0 48.0 KA-08B 47.334192°,-122.310083°6-12 Discrete Soil <11.0 44.0 KA-09 47.334075°,-122.309995°0-6 Discrete Soil <11.0 56.0 KA-10 47.334076°,-122.310175°0-6 Discrete Soil <11.0 33.0 KA-11 47.334079°,-122.310359°0-6 Discrete Soil 14.0 59.0 KA-12 47.334091°,-122.310576°0-6 Discrete Soil <11.0 12.0 KA-12B 47.334091°,-122.310576°6-12 Discrete Soil <11.0 36.0 KA-13 47.334089°,-122.310798°0-6 Discrete Soil <10.0 45.0 KA-14 47.334111°,-122.311006°0-6 Discrete Soil <11.0 64.0 KA-15 47.334115°,-122.311218°0-6 Discrete Soil <11.0 51.0 KA Project 064-23022 October 3, 2023 Page 3 KRAZAN & ASSOCIATES, INC. With Offices Serving the Western United States KA-16 47.334117°,-122.311443°0-6 Discrete Soil <11.0 59.0 KA-16B 47.334117°,-122.311443°6-12 Discrete Soil <11.0 51.0 KA-17 47.333859°,-122.311430°0-6 Discrete Soil 14.0 70.0 KA-18 47.333858°,-122.311210°0-6 Discrete Soil <11.0 27.0 KA-19 47.333834°,-122.310951°0-6 Discrete Soil <11.0 <5.4 KA-20 47.333832°,-122.310746°0-6 Discrete Soil <11.0 18.0 KA-20B 47.333832°,-122.310746°6-12 Discrete Soil <11.0 26.0 KA-21 47.333835°,-122.310583°0-6 Discrete Soil <11.0 40.0 KA-22 47.333827°,-122.310402°0-6 Discrete Soil <11.0 29.0 KA-23 47.333830°,-122.310240°0-6 Discrete Soil <11.0 33.0 KA-24 47.333884°,-122.310094°0-6 Discrete Soil <11.0 32.0 KA-24B 47.333884°,-122.310094°6-12 Discrete Soil <11.0 24.0 KA-25 47.333958°,-122.310025°0-6 Discrete Soil <11.0 10.0 KA-D-26 47.334133°,-122.310678°0-6 Composite Duff <12.0 <5.8 MTCA Cleanup Limits Method A NA NA Soil 20.0 250 All results displayed in ppm = Parts Per Million unless otherwise noted All cleanup limits are MTCA Method A MTCA = Model Toxics Control Act Bold = above MTCA Cleanup Limits 1.5 Conclusion The soil collected from the subject site located at 29850 18th Avenue South,Federal Way,WA,did not exceed the Model Toxics Control Act (MTCA)Cleanup Levels for unrestricted land uses for Total Arsenic or Lead. LIMITATIONS This survey and review of the subject property has been limited in scope to those areas defined by the client.This investigation is undertaken with the risk that visual observations and random sampling alone would not reveal the presence, full nature, and extent of Contaminants of Concern (COC).Krazan makes no representation as to the COC content of materials not sampled or that were inaccessible to our inspector.The sample locations are approximate, and are based on field notes and diagrams of sample locations.The opinions presented herein apply to the site condition existing at the time of the KA Project 064-23022 October 3, 2023 Page 4 KRAZAN & ASSOCIATES, INC. With Offices Serving the Western United States investigation.Opinions and recommendations provided herein may not apply to future conditions that may exist at the site. The findings presented in this report were based on field observations and sampling as defined by the client.Therefore,the data obtained are clear and accurate only to the degree implied by the sources and methods used.The information presented herein is based on professional interpretation using presently accepted methods with a degree of conservatism deemed proper as of the report date. We do not warrant that future technical developments cannot supersede such data. This report is provided for the exclusive use of the client noted on the cover page and is subject to the terms and conditions in the applicable contract between the client and Krazan.The client is the only party to whom Krazan has explained the risks involved and has been involved in the shaping of the scope of services needed to satisfactorily manage those risks, if any, from the client’s point of view.Any third- party use of this report,including use by the Client’s lender, prospective purchaser, or lessee will be subject to the terms and conditions governing the contractual work between the Client and Krazan.The unauthorized use of, reliance on, or release of the information contained in this report is strictly prohibited and will be without risk or liability to Krazan. Laboratory analysis was conducted by a laboratory accredited by the State of Washington, Department of Ecology.The results of the analyses are accurate only to the degree of care exercised by the independent laboratories and the representative nature of the samples obtained. Krazan appreciates the opportunity to provide you with this information and trusts that you will find it useful. If you have any questions or if we may be of further assistance, please do not hesitate to contact our office at (253)939-2500. Respectfully submitted, KRAZAN &ASSOCIATES, INC. Jessep Englert, G.I.T Field Geologist Krazan & Associates Attachments: Appendix A.Libby Environmental, Inc. Laboratory Report,September 28, 2023 following text OnSite Environmental, Inc.Laboratory Report,September 27, 2023 Libby Environmental, Inc. 3322 South Bay Road NE Olympia, WA 98506-2957 Phone (360) 352-2110 libbyenv@gmail.com September 28, 2023 Tacoma, WA 98409 825 Center Street Jessep Englert Enclosed are the results of analyses for samples received by our laboratory on 9/13/2023. Applicable detection limits and QA/QC data are included. The sample(s) will be disposed of within 30 days unless we are contacted to arrange long term storage. Libby Environmental, Inc. appreciates the opportunity to have provided analytical services for this project. If you have any further questions about the data report, please feel free to contact us. It was a pleasure working with you on this project, and we are looking forward to the next opportunity to work together. RE: ANK Short Plat Work Order Number: L23I045 Krazan & Associates, Inc. Sincerely, Senior Chemist Sherry Chilcutt Page 1 of 20 Page 2 of 20 Page 3 of 20 Libby Environmental, Inc.3322 South Bay Road NE Olympia, WA 98506 ANK Short Plat Project Phone: (360) 352-2110 Krazan & Associates, Inc.FAX: (360) 352-4154 Libby Work Order # L23I045 Email: libbyenv@gmail.com Date Received 9/13/2023 Time Received 1:30 PM Received By Chain of Custody Log In 2.3 °C 7.9 °C 11. Did container labels match Chain of Custody? 12. Are matrices correctly identified on Chain of Custody? 14. Is there sufficient sample volume for indicated analysis? 15. W ere all containers properly preserved per each analysis? 16. W ere VOA vials collected correctly (no headspace)? Discrepancies/ Notes Person Notified: Date: By W hom: Via: Regarding: 19. Comments. 13. Are correct containers used for the analysis indicated? 17. W ere all holding times able to be met? 18. W as client notified of all discrepancies? 5. Cooler or Shipping Container has Custody Seals present. 6. W as an attempt made to cool the samples? 7. Temperature of cooler (0°C to 8°C recommended) 8. Temperature of sample(s) (0°C to 8°C recommended) 9. Did all containers arrive in good condition (unbroken)? 10. Is it clear what analyses were requested? KLI Sample Receipt Checklist 1. Is the Chain of Custody is complete? 2. How was the sample delivered? 3. Cooler or Shipping Container is present. 4. Cooler or Shipping Container is in good condition. 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