Absher/Stellar J Joint Venture 12/8/2025 (3)

Port Gardner Storage Facility Volume 7 Attachment O Page 5 CITY OF EVERETT ⋅ 3200 Cedar Street ⋅ Everett, WA 98201 ⋅ (425) 257-8800 ⋅ Fax (425) 257-8882 Q17 - Specification 31 32 33 | Article 2.01.A – Is Type 1L cement acceptable for DSM/Jet-Grout Construction? Yes. Type 1L should conform to Section 9-01.2(1)B of the 2025 WSDOT Standard Specifications. Contractor must confirm that Type 1L grout mix meets testing and performance criteria. Q18 – Specification 31 32 33 | Article 2.01.A – Due to presence of organics, we must use slag in combination with cement. Note that Cement-Slag provides higher strength than cement only mixes. Is slag utilization acceptable? Yes. Contractor must confirm that cement-slag mixture will achieve specified strengths. Q19 – Specification 31 32 33 | Article 3.02 – It is impossible to extract wet grab samples from jet grout columns. Will sample collection from spoils reflow at the surface while the nozzle is at top, middle and bottom 1/3 of the column be acceptable? If not, what other alternate approach does the Engineer suggest for quality assurance? Three wet grout-soil mix samples (downhole sampling) shall be obtained from the in-situ soil cement column during installation at each of the following depths in the column: top one third, middle one third, bottom one third. For jet grouting, sample collection from spoils reflow (i.e., backflow) at the surface may be taken in lieu of downhole sampling. Sampling from spoils reflow should be taken while the nozzle is at each of the following depths in the column: top one third, middle one third, bottom one third. Q20 – Can you provide the raw Cone Penetration Test (CPT) files? A copy of the CPT files may be accessed at the following link: https://www.everettwa.gov/DocumentCenter/Index/1867 Q21 – Can you provide the RocScience Slide files in the geotechnical report? These files are needed for the Contractor’s preliminary design of ground improvement. No. The material input properties used for HWA’s stability analyses of existing site conditions are provided in the geotechnical report. The contractor could use those soil properties to generate their own stability models to evaluate their preliminary design of the ground improvement buttress. Q22 – With reference to spec section 00 21 13, 1-02.1(1), please confirm it is acceptable for Bidder to use qualified subcontractors to meet requirements of 1. with respect to having a plumbing contractor’s license, an elevator contractor’s license, and an electrical contractor’s license in compliance with the appropriate RCW. Subcontractor licenses do not satisfy this requirement for bidder’s responsibility determination under RCW 39.04.350.