Always Active Services LLC of Seattle 7/21/2022

I 1 feet beyond the toe of a fill and 10 feet beyond the top of a cut unless otherwise 2 shown in the Plans. 3 4 4. Establish grading limits, placing slope stakes at centerline increments not more 5 than 50 feet apart. Establish offset reference to all slope stakes. If Global 111 6 Positioning Satellite (GPS) Machine Controls are used to provide grade control, 7 then slope stakes may be omitted at the discretion of the Contractor 8 9 5. Establish the horizontal and vertical location of all drainage features, placing 1 10 offset stakes to all drainage structures and to pipes at a horizontal interval not 11 greater than 25 feet. 12 13 6. Establish roadbed and surfacing elevations by placing stakes at the top of 14 subgrade and at the top of each course of surfacing. Subgrade and surfacing 15 stakes shall be set at horizontal intervals not greater than 50 feet in tangent 1 16 sections, 25 feet in curve sections with a radius less than 300 feet, and at 10- 17 foot intervals in intersection radii with a radius less than 10 feet. Transversely, 18 stakes shall be placed at all locations where the roadway slope changes and at I 19 additional points such that the transverse spacing of stakes is not more than 12 20 feet. If GPS Machine Controls are used to provide grade control, then roadbed 21 and surfacing stakes may be omitted at the discretion of the Contractor. 22III 23 7. Establish intermediate elevation benchmarks as needed to check work 24 throughout the project. 25 26 8. Provide references for paving pins at 25-foot intervals or provide simultaneous 27 surveying to establish location and elevation of paving pins as they are being 28 placed. I 29 30 9. For all other types of construction included in this provision, (including but not 31 limited to channelization and pavement marking, illumination and signals, I 32 guardrails and barriers, and signing) provide staking and layout as necessary to 33 adequately locate, construct, and check the specific construction activity. 34 35 10. Contractor shall determine if changes are needed to the profiles or roadway 36 sections shown in the Contract Plans in order to achieve proper smoothness 37 and drainage where matching into existing features, such as a smooth transition 38 from new pavement to existing pavement. The Contractor shall submit these 39 changes to the Engineer for review and approval 10 days prior to the beginning 40 of work. 41 I 42 The Contractor shall provide the Contracting Agency copies of any calculations and 43 staking data when requested by the Engineer. 44 45 The Contractor shall ensure a surveying accuracy within the following tolerances: 46 I 1 INTERURBAN TRAIL TO YMCA PEDESTRIAN IMPROVEMENTS SPECIAL PROVISIONS WORK ORDER 3749 Page SP12 of SP68 MAY 2,2022 I