1707 SCENIC DR SNO CO PUD Geotech Report 2022-10-25

� infiltra#aora_.#a�il�#ies.-Jo�ated alon�the base of the northern fill slopes near the PUD access road be _____..__�..n._-----...___._�__...___T. ---- __ .- ____..�__.�___.---__- -. -- designed using an infiltration rate of no more than.Q_5��nc.hes per hour. Recomme�tded Additional Ceotechnical Services Throughout this report, recommendations are provided where we consider additional geotechnical services to be appropriate. These additional services are summarized below: . t � ■ GeoEngineers should be retained to review the proposed storm water infiltration system with respect to potential impacts to slopes and existing deeper fiil soils, and structures supported on existing fill. �■ GeoEngineers should review the retaining wall designs for the project and be retained to design MSE walis or other, if necessary. A �■ GeoEngineers should be retained to review the project plans and specifications when complete to ' confirm that our design recommendations have been implemented as intended. ' ■ During construction, GeoEngineers should observe and evaluate the suitability of the foundation ' . subgrades, observe removal of unsuitable soils, evaluate the suitability of floor slab and road subgrades, observe construction of the retaining walls, observe installation of subsurface drainage measures, observe and test structural backfill, and provide a summary letter of our construction observation services. The purposes of GeoEngineers construction phase services are to confirm that the subsurface conditions are consistent with those observed in the explorations and other reasons described in Appendix C, Report Limitations and Guidelines for Use. LIMITATIONS We have prepared this report for Snohomish County PUD No. 1. The Snohomish County PUD No. 1 may distribute copies of this report to authorized agents and regulatory agencies as may be required for the project. Within the limitations of scope, schedule and budget, our services have been executed in accordance with generally accepted practices in the field of geotechnical engineering in this area at the time this report was prepared. The conclusions, recommendations, and opinions presented in this report are based on our professional knowledge, judgment and experience. No warranty or other conditions, express or implied, should be understood. Any electronic form, facsimile or hard copy of the original document (email, text, table and/or figure), if provided, and any attachments should be considered a copy of the original document. The original document is stored by GeoEngineers, Inc. and will serve as the official document of record. Please refer to Appendix D, titled "Report Limitations and Guidelines for Use" for additional information pertaining to use of this report. REFERENCES City of Everett, 2012. "Critical Areas Map 1." Roberta Goodwill GIS Analyst/Programmer Planning Department, August 2012. GEOENGINEER� October24,2014 Page21 File No.0482-027-02