9421 18TH AVE W LILYS COURT 2025-07-29

Western 13000 Highway 99 South • Everett, Washington 98204 Engineers (425) 356-2700 FAX (425) 356-2708 Inc. SURVEYORS • PLANNERS • ENGINEERS May 23, 2012 City of Everett Attn:-Jane Zimmerman r� ' 3200 Cedar Street Everett, WA 98201 Subject: Lilly's Court, Field Change Cover Letter Dear Ms. Zimmerman: Below you will find summary of some minor changes to previously approved construction drawings for the Lilly's Court project. • As noted on page 1 of the construction drawings, the contactor was to verify existing utilities and previously installed finish floor elevations of the west 2 duplex units prior to starting construction. This was due to them being installed after the previous survey map was prepared and used on the construction plans. Per contractors check on the finish floor elevations, Unit 1/2 was found to be approximately 1.0-feet below the initial design of that building. Additionally, Unit 3/4 was found to be approximately 0.4-feet higher that previously thought. • Due to the relative "flatness" of the site in the central area, it was critical to revised the previously designed finish grades of the new drive aisle in order to provide adequate fall between the existing garage elevations and the new drive aisle/storm system. From the previously approved drawings, the finish grades of the new drive aisle have been lowered by approximately 0.5' to 1.5' in depth. • With the lowering of the finish grades on the drive aisle, the designed elevations of the new storm system were also revised. No significant changes to the slopes and lengths were made but the overall system was lowered by approximately 0.75' to 1.0'. • Per conversations with the contractor, they have decided to go with a different company who makes the exact copy of the storm chamber system previously design. Note that the only significant change between the two products is that the company (Contech)that we have decided to use actually has about 5% more storage volume in their system as oppose to the Stormtech product. The updated system maintains the same overall height but actually provides slightly more storage volume resulting in an "oversized" vault. Due to slight variations in the individual chamber sizes, the total footprint has also slightly changed but has no impact to the surrounding design. RAIDSERVER\2011\111003A\ENG\Field Change Cover Letter LAND USE CONSULTANTS • CIVIL ENGINEERS • LAND SURVEYORS • ENGINEERING CORPORATION