4027 4TH ST SE 2018-01-01 MF Import

Jenuary 14, 2003 HWA Proiect No. 2002-146-21 such that surface runoff is directed away from struc� and pavements and into swales or otha controlled drainage devices. In our opinion, erosion at the site during construction can be minimized by implementing the recommendations presented in Section 4.53, Wet Weather Earthwork, and by judicious use of straw bales, silt fences and plastic sheets. The erosion control devices should be in place and remain in place throughout site preparation and consWction. Potential problems associated with erosion may also be minimized by establishing vegetation within disturbed areas immediately following grading operations. Vegetation with deep penetrating roots is the preferred choice, since the roots trnd to maintnin the surficial stability of slopes by mechanical effects and contribute to the drying of slopes by evapotranspiration. 5.0 UNCERTAINTY AND LIMITATIONS We have prepazed this report for the Brown and Caldwell design team for use in design of a portion of this project. The conclusions and interpretations presented in this report should not be conswed as a warranty of subsurface conditions at the site. Experience has shown that soil and ground water conditions can vary significantly over small distances. Inconsistent conditions car� occur between explorations that may not be detec'red by a geotechnical study. If, during future site operations, subsurface conditions are encountered which vary appreciably from those described herein, H�VA should be notiHed for review of the recommendations of this repoR, and revision of such if necessary. Within the limitations of scope, schcdule and budget, HWA attempted to execute these services in accordance �Nith generally accepted professional principles and practices in the fields of geotechnical engineering and enginee•ing geology at the time the repoR was prepared. No wu�ranty, express or implied, is made. The scope of our work did not include environmental azsessments or evaluations regazding the presence or absence of wetlands or hazazdous or toxic substances in the soil, surface water, or ground water at this site. This firm does not practice or c:onsult in the field of safety engineering. We do not direct the contractor's operations, aad cannot be responsible for the safety of personnel other than our own on the site. As such, the safery of others is the responsibility of the contractor. The contractor should notify the owner if any of the recommended actions presented herein are considered unsafe. We appreciate the opportunity of providing geotechnical services on this project. Should you have any questions, or if we may be of further service, please do not hesitate to call. 20021J6 rcpon-final 18 HWA GEOSCIENCES INC. �