6133 LAKE CHAPLAIN RD 2020-03-09

PUBLIC WORKS ZY estimated record of location. This information will need to be updated upon completion of the project and provided as "as-builts" for inclusion on the City's master WFP as-built file. This as-built file has been previously provided to you as a base for your design. Please note, when including the City's information into your drawing do not alter the City's base information including the location of any facilities, reference points, notes, etc. • Please provide typical trench cross section details for buried facilities including along the surface of the Dam and in the roadway/shoulders. At a minimum please include minimum depth of bury, bedding materials, conduit type and size, number of conduits, proposed encasement material (CDF, gravel,?) and backfill material above the encasement with compaction requirement. • Please provide horizontal off-set information and a typical trench section for the area where your facilities will parallel, and cross, the 1960's era cast iron watermain which runs along the western end of the dam. As we have discussed this 50+ year old watermain is a crucial piece of infrastructure that is required in the City's ability to make clean drinking water, and its protection during your work is of the utmost importance. Therefore, we wish to review how close you will be excavating to this pipe, what your depth will be and how you propose to cross the watermain without damaging it. • Please provide a detailed drawing of your crossing under the City's above grade steel siphon and return lines located at the eastern side of the dam. The City is interested in how the work will be performed to trench under these pipelines. • Please provide the location of all vaults including offset off of road centerline. Please also provided information on the vaults themselves including manufacture cuts sheets. We assume the vault lids will be traffic rated, please indicate this on your drawings. • Please provide a typical trench section for the area where your facilities will cross the new 30" drainage culvert that crosses the Portal 2 road. Once I know where your line will be located in regard to the centerline of the road I can provide you with the approximate depth of the new culvert. Once submitted, the City will review and comment on your plans including a request for resubmittal should any additional information be required. Once approved, a copy of the approved plans will be provided to you for use in the field. Please note the City's Construction Management Division will require notification prior to any work being CITY OF EVERETT • 3200 Cedar Street • Everett, WA 98201 • (425) 257-8800 • Fax c2/ (425) 257-8882