3003 COLBY AVE COURTYARD BY MARRIOTT 2021-03-09

. r Associated Earth Sciences, Inc: r _ Gei Brat nJc 'dears of-Service ce r Technical Memorandum Date: July 30, 2009 To: City of Everett Project Everett Hotel 3200 Cedar Street Name: Colby Avenue and Wall Street Everett, Washington 98201 Attn: Mr. Mike Palacios From: Tim Peter, P.E.G., P.Hg. Project No: KV090168A Subject: Contaminated Soil Disposal Estimate Mr. Palacios: As requested, the following is our estimated cost for disposal of the contaminated soil identified at the subject site. The following is a discussion of the assumptions made in arriving at this estimate: ASSUMPTIONS In arriving at our cost estimate we broke down the "contaminated" soil into two categories. Class 3 soils include those soils with petroleum concentrations in excess of the Model Toxics Control Act Method A (MTCA) cleanup level. Class 2 soils include those soils with detectable concentrations of petroleum constituents below the MTCA cleanup levels. Unit Disposal Cost Unit disposal costs of$35.25_per ton and$18.65 per ton were used for our estimate for Class 3 and Class 2 soils, respectively. This cost is based on disposal of the soil at Cemex's (formerly Rinker) Everett facility and is based on a verbal quote from Larry Baker of Cemex on July 30, 2009 (see attached phone conversation record). The disposal fee is tonnage-dependent and therefore the unit cost may vary if the actual tonnage of contaminated soil varies from our estimate. Disposal costs may also change over time. The Cemex disposal facility is located at 6300 Glenwood Avenue in Everett. The quoted prices include a 3.6 percent Washington State refuse tax. r Kirkland Office•911 Fifth Avenue,Suite 100•Kirkland,WA 98033•P I(425)827-7701 •F j(425)827-5424 Everett Office•2911 1/2 Hewitt Avenue,Suite 2•Everett,WA 98201 •P I(425)259-0522•F I(425)252-3408 Tacoma Office•805 Martin Luther King Jr.Way•Tacoma,WA 98405-4147•P I(253)722-2992•F I(253)722-2993 www.aesgeo.com