RES 07100 - Laserfiche WebLink

Piur/ico Drive Ttzrnotrt and Pipeline Prgject Ettviromnental Checklist equipment and spoils adjacent to the open pipeline trench. Construction will follow CaUOSHA Construction Safety Orders and regulations adopted by the City of Pleasanton pertaining to excavation safety. Shoring systems will be the responsibility of the contractor who will submit shoring system design to the City for approval prior to implementation. Excavations will also be monitored and documented. "fhe turnout and fluoridation building occur on soils mapped as silts and lean clays with low shrink-swell potential and fat clays with high shrink-swell potential. Borings near the fluoridation building consisted of fat clays. Based upon conclusions in the geotechnical report prepared for the project (DCM Engineering 2005), the near-surface soils at the hrrnout and fluoridation building sites will shrink and swell with seasonal changes in soil moishtre content. The expansive soils can adversely impact the foundations of the fluoridation building and turnout. The project design for the fluoridation building and turnout will follow standard recommendations in the geotechnical report (DCM Engineering 2005) to provide a low level of risk with regard to potential impacts of expansive soil. These will be accomplished through a combination of removal and replacement of expansive soils, moisture control and moisture conditioning and site drainage. The methods identified in the geotechnical report will be incorporated into the final design and implemented during project construction and thereby reduce the impacts to less than significant. e) No Impact. "fhe project will provide public infrastructure for water service. "there will not be septic systems or alternative waste water disposal systems within the project. "therefore, this would be no impact. City of Pleasanton 30 Winzler ~E Kelly Draft Inmal Study/Proposed Negative Declaration August 2006 0426301