319 76TH PL SW 2016-01-01 MF Import

NMI SERS Public Safeh• Q-1-1 Communication Tower ( ( Sl Report No 704-05224-1 December 26, 2000 Page 7 5.2.1 Construction Dewatering Water seepage in excavations should be anticipated during the wet season of the year. For most of the excavations for this project, pumping from sumps outside the limits of the excavation should control water seepage and surface water ponding. Water should not be allowed to collect in foundation excavations or on prepared subgrades of the construction area either during u,after construction. Undercut or excavated areas should be sloped toward one comer to facilitate removal of any collected rainwater, groundwater, or surface runoff. Positive site drainage should be provided to reduce infiltration of surface water around the perimeter of the proposed construction. The grades should be sloped away from the proposed structures and surface drainage should be collected and discharged such that water is not permitted to infiltrate beneath the structures. Should excessive and uncontrolled amounts of seepage occur, the geotechnical engineer should be consulted. 5.2.2 Excavations/Slopes Temporary earth slopes may be cut near-vertical to heights of 4 feet Excavations deeper than 4 feet should be performed in accordance with Department of Labor Occupational Safety and Health Administration (OSHA) guidelines. Permanent slopes shall be no steeper than 2 horizontal to 1 vertical. Job site safety is the responsibility of the project contractor. In Federal Register, Volume 54, No. 209 (October 1989), the United States Department of Labor, Occupational Safety and Health Administration (OSHA) amended its "Construction Standards for Excavations, 29 CFR, Part 1926, Subpart P This document was issued to better insure the safety of personnel entering trenches or excavations. It is mandated by this federal regulation that excavations, whether they be utility trenches, basement excavations, or footing excavations, be constructed in accoidance with the new OSHA guidelines. I; is our understanding ,hat these regulations are being strictly enforced and, if they are not closely followed, the owtler and the contractor could be liable for substantial penalfies. The contractor is solely responsible for designing and constructing stable, temporary excavations and should shore, slope, or bench the sides of the excavations as required to maintain stability of both the excavation sides and bottom The contractor's "responsible person", as defined in 29 CFR Part 1926, should evaluate the soil exposed in the excavations as part of the contractor's safety procedures. In no case should slope height, slope inclination, or excavation depth, including itility trench excavation depth, exceed those specified in local, state, and federal state regulations. We are providing this information solely as a service to our client PSI does not assume responsibility for construction site safety or the contractor's or other partes' compliance with local, state, and federal safety or other regulations Irl