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Home My WebLink About31A_Geotech Response Letter_2024-1015& A S S O C I A T E S, I N C. G E O T E C H N I C A L E N G I N E E R I N G E N V I R O N M E N T A L E N G I N E E R I N G C O N S T R U C T I O N T E S T I N G & I N S P E C T I O N Offices Serving the Western United States 1230 Finn Hill Road NW, Ste. A, Poulsbo, Washington 98370 (360) 598-2126 • Fax (360) 598-2127 Revised December 11, 2024 Project No. 102-23007 Page 1 of 4 The Hamlet at Pleasant Harbor, LLC. 308913 U.S. Highway 101 Brinnon, Washington 98320 Attn: Mr. John Holbert Email: johnholbert@startmail.com Phone: (541) 740-0053 Reference: Jefferson County Review Comments Response Letter Pleasant Harbor Development 30819 U. S. Highway 101 Brinnon, Washington Dear Mr. Holbert, Per your request, we have prepared this letter to provide our responses to the Jefferson County review comments related to the project geotechnical engineering report. For this project, we have previously prepared following documents: A geotechnical engineer of record (GEOR) letter, dated April 7, 2023. A draft infiltration feasibility evaluation letter, dated June 10, 2024. A limited geotechnical engineering letter related to Staff Housing retaining wall, dated August 21, 2024. We have reviewed the revised technical review comments, prepared by Jefferson County Department of Community Development, dated August 16, 2024. We understand that the item 7 comment is related to project geotechnical report. We were requested to provide our response to the item 7 comment. Comment 7 a GeotechnicalStudy. The2008geotechnicalreportpreparedfortheEISandSEISevaluatedasignificantly different version of the site plan. Please provide an updated geotechnical report that addresses project changes since 2008 pursuant to Development Agreement Appendix B, sec. 18.22.170(9). Refer to geologically hazardous area report requirements in Development Agreement Appendix B, sec. 18.22.420. The report should include or be accompanied by a site plan that identifies geologically hazardous areas. October 15, 2024 Exhibit 31A 4 Page No. 2 Krazan & Associates, Inc. Offices Serving the Western United States We have reviewed the geotechnical engineering report titled “Final Draft Geotechnical Investigation – Pleasant Harbor Marina and Golf Resort – Jefferson County, Washington – Project No. SG0801”, prepared by Subsurface Group (SG), LLC, dated January 23, 2013. We understand that the geotechnical report was prepared for the proposed development consisting of: Wastewater Treatment Plant Maritime Village Building – 42 Units Reunion House – 12 Units Harbor View House – 12 Units Remodel/Reconstruct Marina Commercial Remodel;/Reconstruct Existing Pool and Change Building Golf Terrace and Conference Center/Spa – 191 Units Golf Course Golf Terraces 2, 3 and 4 – 329 Units Sea View Villas – 36 Units Golf Vistas – 38 Units Maintenance Building and Staff Quarters – 52 Units Sanitary Sewer Pump Stations Sea View Villas – 170 Units Golf Vistas – 6 Units Half-Way House Based on our review of the civil plan sheet 1 of 26, prepared by Hatton Godat Pantier (HGP), dated June 2024 and our communications with the client, we understand that the proposed development now consists of: Maritime Village – 66 Units Inn by the Sea & Recreation Center – 220 Units KA Project No. 102-23007 Pleasant Harbor Development Revised December 11, 2024 October 15, 2024 Exhibit 31A Page No. 3 Krazan & Associates, Inc. Offices Serving the Western United States Event Center Staff Housing – 52 Units Agra Center Cascadia House – 126 Units Olympia House – 126 Units Eagle’s Nest – 82 Units Sea View Village – 164 Units Vista Views – 52 Units Wastewater Treatment Plant (WWTP) Golf Course Based on our review of the geotechnical report and proposed development, it is our opinion that the proposed development should not adversely impact the existing potential geologically hazardous areas, provided that the design and constructions follow the recommendations presented in the geotechnical report and our subsequent geotechnical engineering letters. Additionally, a representative of Krazan & Associates, Inc. should be present at the site during the earthwork activities to confirm that actual subsurface conditions, including foundation bearing soils, are consistent with the geotechnical report/letter(s) findings. Note:A layout showing the geological hazardous areas was provided with the original geotechnical report, and is attached to this letter for reference. Civil Plan sheet 1 of 26 is also attached for reference. These layouts should not be utilized for scaling purposes as these are scanned or compressed images. Comment 7 b Recommendations. Some recommendations in the geotechnical report apply to project design, such as maintaining a 100-foot buffer from the top of shoreline slopes to all buildings, roadways, and infrastructure. Further review for specific project recommendations will be completed when the geotechnical report is updated. We concur with the original geotechnical report findings and recommendations. A 100-foot setback should be provided to all the proposed hardscape structures from the moderate to high landslide hazard potential areas as shown on the Figure 16 of the original geotechnical report. KA Project No. 102-23007 Pleasant Harbor Development Revised December 11, 2024 October 15, 2024 Exhibit 31A KA Project No. 102-23007 Pleasant Harbor Development Revised December 11, 2024 Page No. 4 Krazan & Associates, Inc. Offices Serving the Western United States Comment 7 c Phasing. The 2008 geotechnical report indicates that staging construction work in phases over a number of years is a mitigation measure to address risk associated with geologically hazardous areas. The report should consider the proposed sequence of construction for the project. Based on our communications with the client, we understand that the current proposed phasing will be as following: 1) Phase 1a will consist of site clearing and grading and beginning of construction of the golf course. Construction of the road network from gate to gate with building footprints for the Agra House, Staff Housing, the WWTP, the Event Center, and the Inn by the Sea. Construction of Highway 101 interchange with Black Point road. Stormwater management and storage. 2) Phase 1b will include construction of the water storage tank and associated distribution system, the septic lift system and associated underground piping. The Sea View Villas, and Vista Views will also be started in this phase. 3) Phase 2 will include construction of the Maritime Village, Olympia House, Cascadia House and Eagle’s Nest. Continuation of construction of the Sea View Villas and the Vista Views. In our opinion, the proposed phasing should not adversely impact the exiting potential geologically hazardous areas, provide that the constructions follow the recommendations presented in the geotechnical report and our subsequent geotechnical engineering letters. CLOSURE We appreciate the opportunity to provide this service for you. If you have any questions, or if we may be of further assistance, please do not hesitate to contact our office at (360) 598-2126. Respectfully submitted, KRAZAN & ASSOCIATES, INC. Vijay Chaudhary, P.E. Project Engineer Attachments:Erosion and Landslide Hazard Potential Map - Figure 16 of SG’s Geotechnical Report HGP’s Plan Sheet C1 or 26 Showing Proposed Development 12/11/24 October 15, 2024 Exhibit 31A ATTACHMENTS Exhibit 31A Exhibit 31A Exhibit 31A