Item 17 - Agreements for On-Call Geotechnical Engineering Services

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Scheduling and Dispatching Leighton is prepared to begin our work immediately upon receipt of your written authorization to proceed. We would appreciate at least three working days advance notice for scheduling our field personnel on the first day you require our services. Work thereafter may be - scheduled with a full (24 hours) one working day advance notice. We will rely on your field representative to contact us to schedule all Contact Leighton Dispatch fieldwork, and to help us avoid unproductive site visits. Contact on the (866) LEIGHTON weekends and holidays are not addressed until the first following lei gMond ispatch@leigMon group.cor working day, without prior arrangement. We request that you "partner - with -us" to manage our budget, by avoiding unnecessary trips to the site. We will work with your field representative to reduce standby time and/or unnecessary trips to the site. OTHER CONSULTING SERVICES In addition to the core geotechnical services described above that are expected to be provided as part of the on -call contract, we understand that other consulting services associated with geotechnical and geologic consulting services may be required. These services might include: Landslide Repair Design: For more than 60 years, Leighton has been providing the integrated geotechnical engineering and engineering geology services required for landslide repairs. In addition to our experience with site characterization and mitigation design concepts, our Geotechnical Engineers (GEs) prepare assessment and mitigation reports and prepare repair grading plans and specifications, including remedial earthwork, soil nail and/or earth anchor ("tie -back") design, conventional shoring to reestablish roadways, safe utility corridors or to support existing structures with underpinning. For more complex shoring designs, we will consult with an experienced Structural Engineer (SE) who has experience focused on shoring. Remedial Grading Plan Preparation: Although geotechnical engineers provide essential input for all grading plans, such plans are more routinely prepared by general -practice Civil Engineering firms. On occasion, however, grading consists only of geotechnical remediation earthwork, such as for landslide stabilization. In these cases, Leighton has and will assume the lead on designing slope stabilization buttresses and/or other remedial earthwork and will prepare final design stabilization grading plans in house, possibly with assistance from a civil engineering subconsultant for Professional Land Surveying (PLS) services and minor general civil engineering support to establish property boundaries and easements. Peer Review. Leighton will provide Third Party review services to assist the City in the evaluation of geotechnical reports prepared by others. We do this routinely for our other clients. Based upon our review, we will provide written comments and recommendations to the City for additional analysis, if needed. In addition, we will attend meetings with the technical team to discuss project priorities and progress. For Third Party reviews to add value, a mentorship attitude, rather than competitive attitude, is required. We only provide comments that are necessary to ensure compliance and result in enhanced public safety, avoiding any real or perceived bias against other involved professionals. Value Engineering (VE): Leighton will evaluate several alternatives for geotechnical design to ensure appropriate cost-effective measures are implemented when appropriate. Drafting Services: Leighton has full in-house drafting capabilities utilizing AutoCAD Civil 3D, MicroStation, and analytical/visualization tools such as ArcGIS, Modflow, Rockworks, and gINT software. We possess the full array of information technology and field equipment necessary to successfully support large-scale, geospatial data -intensive projects such large pipeline in complex geologic areas. Additionally, we can use computer graphics to visually convey the results of our studies. Illustrations and report graphics are developed utilizing a variety of data imaging and geospatial analysis software. Boundaries, delineations, visualizations and proposed land uses are compiled and viewed in a GIS platform, using ArcGIS,