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<br />~ <br />jot <br />~f <br />~ <br />~. <br /> <br />8-04. Six-inch undisturbed cylinder samples of near surface plastic <br />materials "ere taken at All-21 from 1. 5-2.5 fee t and at AlI-46 from 2.5-4.5 <br />feet. Samples tested classified as clays (CL, Cll), sandy clay (CL) aud <br />clayey sand (SC). Bag samples for composite testing of borrow area rratcrials <br />to be used as embankment fill were taken at auger holes hH-74 and ..'\J1-79. <br />Composite samples tested classified as clay (CL), silty saud (SP-S::) and <br />clayey sand (SC). <br /> <br />( <br /> <br />8-05. Results of field investigations and laboratory tests. Results <br />of field and laboratory classificat: on tests are summarized in table 1 of <br />Appendix A, Disturbed samples from auger holes All-I through AlI-84 Fere <br />classified in the Dis trict Laboratory. Gradation plots shm'Tin" foundation <br />and borrow material distrinur;on and predominance of naterial type for auger <br />holes AlI-13 to All-84 are shown on plate 33. Testing of undisturue~ and <br />remolded samples' of foundation and borrow material ,,,as perforLC,ed in the <br />SHD Laboratory. Results of testing are summarized on plate 33. Results of <br />the SHD tes ts were reported in S\.JDED-GL Report lio. 10342, "rJ;SULTS Of Ti::STS <br />OF FOUllDATlOll NATERIAL, LOCAL PROTLCTlVEPKOJECT, LAS ANn AS - ALJDQ1.iERQUE <br />DISTRICT" dated 23 January 1968, a copy of "I,ich is attaciled as exhibit 1, <br />~ Appentlix A. Five shale samples from augher holes Ali-72 anu :lJ.~-73 -\Jere sent <br />to S\-JD Laboratory for unconfined compression tests. Results of the: ao- <br />oratory tests were reported in S;mED-GL Report No. 10304 ";::ZSULTS OF TESTS <br />Oil FOmlDATION MATERIALS, LAS AJ.'iIMAS LEVEE - ALBUQUERQUE DISTRICT" dated 14 <br />December 1967, a' copy of ~vhich is attached as exhibit 2) Appendix A. <br /> <br />8-06. Subsurface materials - South levee foundation. Subsurface <br />investigations for the south levee consisted of auger holes All-13 t;wough <br />AiI-63A, All-70 and Ali-71. Locations and visual logs of the auger holes are <br />shmm on plates 1 through 14. Foundation materials for the south levee <br />consist of a variable thickness of fine-grained overburden unuerlain by <br />granular river alluvium.. The surface layer of fine-grained overburden <br />classified generally as clay (CL or eH), sandy clay (CL or CL-HL), and sandy <br />or clayey silt (HL, HL-CL). The river alluvium classifies as sand or gravelly <br />sand (SP, SH, SP-SH, SH-SH) <lith some gravels (GP, GP-GIl). The +i.ne-grained <br />foundation material or natural blanket is continuous but of variable thickness <br />ranging from 1 to 10 feet except in areas adjacent to the river on the mai~ <br />levee alignment where the blanket has been removed by erosion. The fine' <br />grained overburden and the coarser grained river alluvium are suitable f0.....J.lua- <br />tion materials for the proposed levee system. <br /> <br />8-07. North levee foundation. Foundation investigations for the north <br />levee consisted of auger holes Ali-64 through &1-69. Locations and visll.].l <br />logs of the auger holes are shoun on plates 15 and 1G. TIle raaterials classif"Jr <br />similarly to those in the south levee foundation with the layer of fine grain- <br />ed materials averaging approximately 6 feet in depth. Foundation materials <br />are suitable for the proposed levee reach. <br /> <br />19 <br />