2600 FEDERAL AVE 2021 PORT OF EVERETT 2025-09-29

Transportationir-ibson Traffic Consultant$, Inc. MEMORANDUM �� 3O14 WAsy� To: Laura Gurley, Planner—Port of Everett ?r From: Matthew Palmer, PE ' Subject: SEPA Trip Generation Zl'3 Project: Maritime Industrial Expansion, GTC #20-315 p 42322 Date: February 9, 2021p � NAI. Gibson Traffic Consultants, Inc. (GTC) has been retained to provide information establishing the prior use trip generation for the site using prior SEPA documentation, identify the construction traffic required to cap the site/provide outside storage cargo area and operations to determine the Phase 1 use trip generation and if there will be any impacts to the City street system. Kimberly Clark Trip Generation Kimberly Clark Scotts Paper was located on this site for over 50 years. From SEPA documents for the facility, approximately 220 truck trips and 500 employee trips utilized the site daily for a total of 720 ADT. The ratio of PM peak-hour trips to daily trips for manufacturing uses identified in the Institute of Transportation Engineers (ITE) Trip Generation, 10th Edition is 0.67 PM peak-hour/3.93 ADT or 17%. Therefore, it is anticipated that the Kimberly Clark plant had 38 truck trips and 85 employee trips during the PM peak-hour for a total of 123 PM peak-hour trips. These trips should be credited towards the development's future trip generation and mitigation impacts. Construction Trip Generation After the soil remediation of the site is completed the site will be capped with crushed base rock and Hot Mixed Asphalt (HMA). It is anticipated there will be 61,228 cubic yards (CY) of rock and 38,296 CY of HMA. This will be a temporary construction activity. After the capping, there will be additional construction activities including the construction of concrete wash pad and temporary building for the 7 additional longshoremen. This will involve the import and export of materials utilizing 5,159 trucks. This will equate to 10,319 truck trips assuming the export is not removed with vehicles importing materials. If this construction is over a 3-month period assuming 5-days a week of operations, there will be 159 truck trips per day and if the construction period were to span a 6-month period it would result in only 79 truck trips per day. Typically, truck operations during the PM peak-hour represent a maximum of 15% of the daily truck trips; therefore, this would result in 24 PM peak-hour truck trips on a 3-month period or 12 PM peak-hour truck trips over 6-months. In both cases the number of daily and PM peak-hour truck trips is less than the number of truck trips Kimberly Clark had to/from the site during full operation. The construction activities and the quantities of materials and trucks are included in the attachments. 2813 Rockefeller Avenue • Suite B • Everett,WA 98201 Tel: 425-339-8266 • Fax: 425-258-2922 • E-mail: info@gibsontraffic.com