6700 HARDESON RD BASE FILE 2018-01-01 MF Import

( Intracorp July 16, 1998 i . ...a �� .� �i E-3592-620 Page 11 The existing structural underlying the site should provide adequate support for utilities. Utility trench backfill is a primary concern in reducing the potential for settlement along utility alignments, particularly in pavemen: areas. It is important that each section of utility line be adequately supported in the bedding material. The material should be hand tamped to ensure support is provided around the pipe haunches. Fill should be carefully placed and hand tamped to about twelve (12) inches above the crown of the pipe before heavy compaction equipment is brought into use. The remainder of the trench backfill should be placed in lifts haviny a loose thickness of less than twelve (12) inches. A typical trench backfill section and compaction requirements for load supporting and non- load supparting areas is presented an Plate S. u •t'�_ Our recommendatio�s and conclusions are :�ased on the site materiais observed, selective laboratory testing and engineering analyses, the design information provided us and our experience and engineering judgment. Tne conclusions and recommendations are professional opinior � derived in a manner consistent with that level of care and skill ordinarily exercised b, other members of the prafession currently practicing under similar conditions ir. this are•a. No warranty is expressed or implied. The recommendatlans submitted in this report are based upon the soil conditions observed at the site and our construction monitoring. Soil and groundwater conditions between may vary from thase observed. The nature and extent of may not become evident until construction. If variations do appear, ECI should be requested to reevaluate the recommendations of this report and ta modify or verify them in writing prior to prcaeeding with the construction. � As the geo:achr�cal engineer of record, ECI should be retained to perform a general review of the final desiyn and specifications to verify that the earthwork and foundation recommendations have been properly interpreted and implemented in the design and in the construction specifications. Erth Conmlunn. Ine.