820 WAVERLY AVE 2018-01-02 MF Import

,, . � c � � E-4212 I Harris-Tseng Architects pa� � � December 30, 1988 I ' i IWe have provided you with two altemative pavement seccions for the parking areas: t , � Two inches of Asphalt Conerete (AC) over four inches of Crushed Rock Base (CRB) material, or � i � � two inches of AC over three inches of Asphalt Treated Base (ATB) material. (You may wish to consider the use of a base course of four to six inches of pitrun granular soil compacted to 95 pereent of ma�cimum dry densiry beneath the ATB). Because of the general nature of the site soils, and because construction is likely to be ; conducted in the wetter winter months, we recommend you select the ATB pavement section• � This will not only provide you with a rnmpetent "blacktop" surfa a aa�m�etent surfaceton site from construction activ►ty, but will also provide a clean, dry P which to store and protect construction matenals. � � i.iMITAT(ONS � Our reconvnendations and conclusions are based on the site materials observed, selective I laboratory testing, engineering analyses, the design information provided us by your architect, and ou� experience and engineering �udgement. The conclusions and recommendations are professional opinions derived in a manner rnnsistent with that level of care and skill ordinarily exercised by other members of the profession currently practicing under similar conditions in this area. No warranty 'ss expressed or implied. The recommendations submitted in this report are based upon the data obtained from the test piu. Soil and groundwater conditions between test pits may vary from ihose encountered. The nature and eztent of variations between our exploratory locanons may not become evident until construction. If variations then appear, ECI shouid be requested to reevaluate the recommendations of this report and to modify or verify them in writing prior to proceeding with the construction. Additional Services We recommend that ECI be retained to perform a general review of the final design and specifications to verify that the eart':�work and foundation recommendations have been properly interpreted and implemented in the design plans and in the construction spec�ficat�ons. We also recommend that ECI be retained to provide geotechnical services during construction. This is to observe compliance with the design concepts, spccifications or recommendations and to allow design changes in the event subsurface conditions differ from those anticipated prior to the start of construction. Earth Consultants, Inc. R