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\ir. Ken Pivctt <br /> October 27, 2001 <br /> PIliLD EXPLOI2Ai'10'� :�ND LAI30RA"CORY TGS'1'ING <br /> � <br /> On Octobe� 2, 2004, we perrormed our field explora[ion using a track-mnunted drill ri�. A�'e expinred subsurtace <br /> � soil conditions at the site by drilliug two test borines at the Uerm, each to a maximum depth of I(.� teet belo�c <br /> existing top-of-berm elevations. The approximate test boring locations are shown on attached Figure 2. Surface <br /> elevations at each oi the test boring lowtions ��•ere interpreted from the provided topoeraphic site plan. 7 he te;t <br /> Sboring locations�a'ere approximately detertnined in the field by measuring from the existing spilhcay and crests oC <br /> � the berm slopes. The Boring Logs are presented on Pigures 4 and 5. <br /> � A geotechnical engineer Gom our offce conducted the field csploration and classified the soil condition; <br /> encountered. Our representative maintaincd a log of'each test boring, obtained representative soil samples, and <br /> � observed pertinent site feature;. Soil samples �cere obtained at regular intervals in accordance �aith Amc-�^.an <br /> Society for Testing and i�tarerials (ASTD9) Test Designation D-1536. All soil samples ��ere cisually clz:;siticd in <br /> accordance with the Unificd Soil Classitication System(USCS)described on attaclted Figcre 3. <br /> � Representati�e soil smnnles obtained from the test borings �vere placed in closed containers and taken to our <br /> � laboratory for Purther examination and testing. 'The moismre content of each sample �cas measured and i; <br /> reported on Ihe Test Boring Loes. Grain size anal��ses �cere perfonned o; Pour of [he sample,, ihe results o� <br /> ���hich are sho«�n on Ficures fi through 7. <br /> SCI'G COYUITfONS <br /> Surfnce <br /> Tl�e cast-���est aligned benn currently sepantes two storm�eater detention ponds located south of IOOth Street S�, <br /> and adjacent ro tUe Interurban '1'rail. The ponds are surrounded by a chain-link fence. \'�'e obsen•ed standine <br /> water in each of the ponds at the time of our visit. A ten-inch deciduous tree, and several smaller trees were noted <br /> on the berm. Brush primarily wnsising of berry brambles .^.Iso covered the berm slopes. A onc- to t�vo-inch <br /> !hick la�er of asphalt covcrs tlie slopes of[he Uerm. The asphalt is distres,ed in se��eral loca[ions as evidenced b} <br /> t <br /> numcrou; cr.�cks and di;ru�itiun Crom trcc raot;. <br /> Soils <br /> Our test borin�s cueountered nco to four inches u�top;uil"duff underl;�in b}� medium dense silty sand berm fills to <br /> � depths of 7 and 9 !', fcet in Bnrines f3-? �nd B-1, re;pecti�'ch�. The mediu!n den;e fill is in turn imderlain by <br /> loose silry sand fill ro d�ptl„ of I 1 l�, tn 1? fect. �chich appro�imatel}� correspond; to the po��d bu[tom ele��ations <br /> on both sides of tl�e berm. <br /> V'atice, medi�:m dense tu dense silt}� s:md. aud dcnse ;and ���ith ,ilt �cerc encountered b�neath thc benn tills. Lach <br /> ��1 the Ic,t borines �ca, tcrminat d �ciUiin thrse dcnsc seils. <br /> Projec[No. "l'-J�6�) <br /> ` Pagc �o. ?� <br /> I ��, <br /> --- -- _ . <br /> �� <br />