HDR Engineering Inc. 10/6/2022 - Laserfiche WebLink

Exhibit A LL Client Responsibilities 1. The City will provide the street use permit at no cost to the geotechnical consultant. 2. The City will provide any rights-of-entry. Assumptions 1. Drilling will be in City ROW, in city park property, or private property with owner's permission. 2. City of Everett standard traffic control plans, requiring lane closures with flaggers, will be adequate. 3. Two (2) revisions will be required for the ROW use permit application and approval process. 4. The borings that penetrate pavement will be through asphalt. Pavement will be patched with quick drying cement or Aquaphalt®. No saw cutting of pavement, hot mix asphalt, or borings drilled through cement concrete pavement will be required. 5. Stormwater infiltration screening will not be performed. 6. HWA will not be held liable for damage to utilities or other underground structures not defined or located for HWA by HDR, the City, the Utilities Underground Location Center, or the private locating service. 7. The geotechnical explorations proposed herein will not be used to assess site environmental conditions of the entire project area (i.e., no environmental assessment of areas not sampled). Environmental sampling of the proposed geotechnical borings will be conducted only if field screening indicates that there is the potential for contamination to be present. 8. No ground disturbing exploration will be conducted until the Geotechnical Boring IDP is prepared following the Washington Department of Ecology (Ecology) template. Ecology's approval of the Geotechnical Boring IDP will be obtained prior to geotechnical borings, which will be conducted in accordance with the approved IDP. Deliverables 1. Geotechnical Exploration Plan (PDF format). 2. Draft and Final Geotechnical Report (PDF format). Task 400 Conveyance System Preliminary Design Objective Evaluate and develop a concept-level and preliminary stormwater conveyance system design to intercept separated stormwater flows from an existing 85 acre combined sewer basin. Conveyance will also be developed for COE stormwater basins Basins LW-09, LW-10, and LW- 11. The conveyance preliminary design development is based on improvements identified in the Lexington Avenue and Wetmore Avenue Storm Drainage and Water Treatment Improvements Feasibility Evaluation. Stormwater conveyance system improvements include: 1. Replacement of an existing stormwater trunk line from the Lexington Avenue/Wetmore Avenue intersection (Basins LW-11 and LW-10) to the 61st Street/Broadway Avenue intersection. Lexington Avenue Storm Drainage Improvements Preliminary Design Scope of Services 10