616 PECKS DR 2018-01-01 MF Import

� � N �0 b � Cy M t' H U! � � H Everett School District W-6884 15 June 1990 Page 2 ro � �°a N M U�C O �tl •] O M ,��, some 120 feet by 120 feet and would be located in the existing grass play area. A c� • � � y � second building addition would be located just north of the gymnasium in the existing ,, y asphait paved courtyard area, measuring 50 feet by 40 feet. "i he property lines and � o y approximate location of the explorations accomplished for this evaluation are presented � °� � on the Site and Exploration Plan (Figure 1) attarhed with this letter. Boring logs and � y interpretive descriptions of the subsurface conditions encountered at each exploration location are also inciuded. We understand that the new additions will be of similar height and construction as the existing school buildings. In the event of any changes in the nature and configuration of the proposed project, the conclusions and recommendations contained in this report should be mudified, as necessary, to reflect such changes. � Subsurface Exploration ; � The subsurface exploration program completec for this project consisted of advancing 3 � �� borings at the approximate locations shown on Figure 1. The borings were advanced with a truck-mounted holiow-stem power zuger. Sampling was performed by the 1 '��1 Standard Penetration Test method (ASTM:D 1566). This involves driving a standard 2 �.. inch O.D. (outside diameter) sampier 18 incf�es into the soil at the bottom of the auger � � using a 140-pound hammer free-falling a distance of 30 inches. The number of blows �� required to drive the sampler each 6-inch interval is recorded, and the blowcount � �� number fcr the final 12 inches is the Standard Penetration Resistance ("N"). If a total of 50 blows is recorded within one 6-inch interval, the blow count is recorded as 50 blows I��j for the number of inches of penetration. The resistance or N-value provides a measure ' of relative densiry of granular soils and stiHness of cohesive materials. 1 �� During drilling, the borings were continuously observed and logged in the field by an experienced engineer from our firm. The soils recovered were visually ciassified and -1� representative portions placed in moisture-tight containers and returned to our laboratory for later visual evaluation and laboratory analysis, as deemed necessary. Boring iocations were obtained by hand-taping from physical features shown on the site plan provided us. The locations sho�•✓n should be considered accurate only to the degree implied by the method used.