Item 17 - Agreements for On-Call Geotechnical Engineering Services

Home Browse Search

SECTION 2: SCOPE OF WORK The Leighton team will work closely with your staff, appropriate regulatory agencies and other stakeholders to ensure your priorities and expectations are fully realized. Through previous successful as -needed contracts, we have found the most important management tool to ensure project success is proactive communication. Depending on the scope identified in the specific project, we will likely recommend a project kickoff meeting so we can establish a full understanding of your goals and confirm expected work product deliverables, and introduce key project participants. Project priorities including budget, scope, value engineering, and milestones for deliverables will be identified and committed to by our project team. While all projects are uniquely different, Leighton anticipates the scope of work requested by the City may include the following task items presented from design phase investigations and on through completion of construction: Geotechnical Investigation Our geotechnical investigations will be mobilized and managed out of our Irvine Headquarters. We will prepare a detailed proposal that will be tailored to meet each individual project's goals. The proposal will present our proposed scope of work, the anticipated schedule, and a breakdown associated fees. Each proposal will be crafted with a focus on providing expedient and cost-effective engineering solutions. RESEARCH AND STUDIES A task that begins during proposal preparation, our initial Research and Studies for the project will consist of performing a review of existing available documents, geologic maps, and plans relevant to the project that will provide a useful understanding of existing site conditions and site history. In addition, we may review historical stereoscopic aerial photographs and topographic maps to determine approximate existing cut and fill conditions, pre-existing development conditions, and utility conditions that may also impact the design of the project from both a field and construction perspective. FIELD EXPLORATION Prior to executing our field investigation scope as generally summarized below, a member of the Leighton technical staff under the direct supervision of a California -licensed Geotechnical Engineer or Certified Engineering Geologist will visit the site ascertain equipment access and determine suitable exploration methods. Our field exploration program will typically include the following scope: • Perform a geotechnical reconnaissance of the project site including marking out of exploration locations; observation and geologic mapping of existing slopes, utility trench cuts and boxes, access constraints and geologic observation of site geology and adjacent geology where visible • Prior to our proposed subsurface exploration, we will notify Underground Service Alert (DigAlert) to screen the proposed exploration locations for the presence of subsurface public utilities. We will also coordinate boring locations with site facilities personnel and may have our exploration locations cleared by a private underground utility subcontractor • Acquire any necessary permits, such as a Los Angeles County Public Health Well Permit, if needed • We will perform our subsurface evaluation program that may consist of, but is not limited to, a combination of geotechnical borings, Cone Penetrometer Test soundings (CPTs) , test pits, and/or geophysical surveys. The exploration method will be selected on a project specific basis based on our understanding of the proposed development and existing site conditions . • Perform field percolation testing to support the design of proposed stormwater infiltration devices, if any. The field percolation testing will be performed in accordance with the latest Los Angeles County guidelines.