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Last modified
11/2/2021 12:38:46 PM
Creation date
11/2/2021 12:37:33 PM
Metadata
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Template:
Official Documents
Official Document Type
Work Order
Approved Date
10/12/2021
Control Number
2021-166
Agenda Item Number
15.B.4.
Entity Name
Kimley-Horn and Associates, Inc.
Subject
CCNA2018 Work Order 44 for Landfill Gas Flare Skid Improvements and Pipeline Extension
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control details, and miscellaneous details needed to complete the construction of the <br />project, as outlined in the following subtasks. <br />Subtask 1.1 Preliminary Design Activities <br />1.1.1 Alignment for Survey Purposes <br />This task will include a kickoff meeting with SWDD staff to discuss project <br />objectives, scope, schedule and coordination of related tasks/projects not included <br />in this Scope of Services (i.e. environmental and operational impacts, leachate force <br />main, etc.). During the kickoff meeting, the Consultant will present options for <br />finalization of the pipeline route to extend the LFG from the existing flare location <br />to the evaporation system location (north of the biosolids dewatering facility). <br />1.1.2 Survey <br />Using the route identified in Subtask 1.1.1, Consultant will proceed with the <br />collection of survey data to serve as the basis of design. The Consultant will <br />subcontract with a local consultant who routinely performs work for the County on <br />the S WDD property to perform these services. Survey of the proposed LFG pipeline <br />extension corridor will include documentation of surface features, location of <br />underground piping in the vicinity of the evaporation system (leachate forcemain <br />and wastewater forcemain), trees and other notable features. Ground penetrating <br />radar is not included. Underground utilities will be approximated from prior <br />surveys, record drawings and visible surface features (valves, meters, etc.) and will <br />be noted for the selected contractor to field -verify prior to construction. Consultant <br />will review the survey data upon receipt and incorporate into the design plans. <br />1.1.3 Geotechnical Data <br />The consultant will subcontract with a local consultant who routinely performs <br />work for the County on the SWDD property to perform these services. The <br />Consultant anticipates the collection of geotechnical data (soil borings) from <br />approximately seven (7) hand augers to a depth of six (6) feet to determine the <br />suitability of soils and establish the seasonal high water table elevation. The <br />Consultant will review the geotechnical report for incorporation into the design <br />documents. <br />Subtask 1.2 Landfill Gas Pipeline Design <br />1.2.1 30 Percent Design <br />The Consultant will prepare 30 percent plans detailing the proposed modifications. <br />Two 11 x 17 hardcopy sets of review documents will be provided to the County <br />along with an electronic (PDF format) copy. A review meeting will be conducted <br />with SWDD staff to capture comments and concerns relative to the proposed 30 <br />percent design to ensure the design is compatible with the proposed RNG and <br />evaporation system projects. Comments received will be documented and <br />incorporated as appropriate for use in preparing the 60 percent design documents. <br />Page 2 of 8 <br />
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