Common use of Contours Clause in Contracts

Contours. Based on 1-foot contour intervals As part of the mapping service, CONSULTANT will locate the following features. • Centerline of road • Edge of asphalt • Edge of gravel/dirt path • Existing features within project limits • Utilities - overhead and below ground • Stormwater inlets, manholes, and conveyance pipe (including pipe invert elevations at structures) • Guardrail • All major grade breaks • Trees 6 inches and greater, diameter taken at breast height • ▇▇▇▇▇▇▇▇▇▇ ▇▇ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇ between State Route 14 and Vancouver Avenue Assumption(s) • Access to adjoining property within project limits. CITY to send letter to adjoining property owners informing them that a survey crew will be conducting survey services on said property prior to entry. • Horizontal datum: North American Datum 1983 (NAD83) Washington State Plane Coordinate System, South Zone, Grid North, Ground distance, Established by GPS observation. • Vertical datum: North American Vertical Datum 1988 (NAVD88) Established by GPS observation. Deliverable(s) • Final alignment of road ROW base map • Final draft of base mapping in AutoCAD2018 format TASK 4.0 GEOTECHNICAL (RHINO ONE) The proposed geotechnical investigation will include the following items of work. The borings will be made by a truck-mounted drill rig using mud rotary / hollow-stem auger drilling techniques. A detailed geologic reconnaissance of the vicinity of the pedestrian overlook will be completed along with the locations of the planned borings. Two to three borings to a depth of 20 to 25 feet are proposed in the street and/or shoulders. Disturbed standard split-spoon samples will be obtained from the borings at about 2.5-foot intervals of depths to a depth of 20 feet and at 5 feet intervals thereafter. The Standard Penetration Test will be conducted while the disturbed split-spoon samples are being taken. Thin walled Shelby tube samples will be collected as appropriate. The borings will be subcontracted to a drilling contractor experienced in drilling and sampling soils for engineering purposes. The drilling and sampling will be accomplished under the direction of an experienced geotechnical engineer or engineering geologist from Rhino One, who will locate the general areas for drilling, contact private utility locates prior to drilling, and maintain a detailed log of the materials and conditions uncovered during the course of the work. Laboratory testing will include standard classification tests, such as natural water content, unit weight, Atterberg Limits and grain size analysis as appropriate. Engineering analyses will be accomplished that will lead to the preparation of conclusions and recommendations concerning (1) preliminary evaluation of any existing slope embankment instability; (2) recommendation design support for retaining walls or footings to support a pedestrian overlook structure. A letter report will be prepared that discusses the work accomplished and presents the results of the various tests and office studies. The report will be provided in electronic format for CITY use and distribution. Paper copies of the report can be provided upon CITY request. Assumptions(s) • Geology mapped as Eagle Creek conglomerate consisting of gravel to boulder size material in a matrix of silt, sand, and clay. The conglomerate is mantled by a variable thickness silty or clayey soil. • CITY will provide traffic control for the drilling. The drilling will be performed during daytime hours from 8 AM to 5 PM. • The drill cuttings will be placed in drums and hauled off site. Deliverable(s) • Geotechnical report; electronically submitted in pdf format TASK 5.0 ENVIRONMENTAL REVIEW AND DOCUMENTATION The CITY will receive federal funding for this project. As a recipient of federal funding, NEPA review, compliance with Section 106 of the National Historic Preservation Act (NHPA), and Section 7 of the Endangered Species Act (ESA) will be required in addition to local and state permits and authorizations. Compliance with NEPA and other federal environmental laws will be coordinated through the WSDOT Local Programs office. Based on the scale and features of the project, CONSULTANT expects that the project will qualify as a Categorical Exclusion (CE). The sections below outline the tasks that will be necessary to satisfy NEPA review of the project as a CE. Overall, CONSULTANT expects that the NEPA review will consist of a methods and assumptions memorandum, a Categorical Exclusion (CE) Documentation form, and supplemental documentation for a limited number of analysis areas as noted in the tasks below. Review under the State Environmental Policy Act (SEPA) is required for all agency actions, unless specifically exempted by the SEPA rules or statues. Washington Administrative Code 197-11-800(2)(d) exempts certain road improvement projects and the project may qualify for an exemption. This scope assumes the project is exempt and the completion of an environmental checklist will not be required.