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REP37807
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REP37807
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Entry Properties
Last modified
8/25/2016 12:17:10 AM
Creation date
11/27/2007 7:52:53 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1988112
IBM Index Class Name
Report
Doc Date
5/17/1994
Doc Name
SAN LUIS PROJECT TAILIGNS DISPOSAL AREA PHASE II RAISE 1 FINAL CONSTRUCTION REPORT
Media Type
D
Archive
No
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i' <br /> <br /> <br /> <br /> <br />1 <br />Sin Luis Proj«t Phan E Raise 1 Ezpaneion - Firul Conatcudion Report <br />Material Type 3 was placed in a minimum one-foot compacted lift by two Gal-E scrapers and/or <br />six 773-B haul trucks. A Caterpillar D-8L bulldozer rough graded the material in placed followed <br />by a Caterpillar 14 G motor grader. Compaction of the material was followed by density and <br />permeability tests which were then followed by the finished grading by a Caterpillaz 124 G motor <br />grader and static smooth drum rolling with a Dynapac CA-55 vibrating smooth drum compactor. <br />QA/QC density and permeability test results for material Type 3 are included in Appendix C.3. <br />Insitu density tests conducted in the Type 3 material resulted in only one failure out of 123 tests. <br />This material was recompacted. Compaction was accomplished by the use of a minimum of three <br />passes of a Hyster smooth drum vibrating compactor, or a Dynapac CA-55 vibrating smooth drum <br />' compactor. <br />1 <br /> <br />1 <br /> <br />1 <br />1 <br /> <br />1 <br /> <br />CJ <br />Insitu permeability testing was accomplished through the use of the BAT apparatus manufactured <br />by BAT Envitech AB of Danderyd, Sweden which was specifically developed for Vesting clay liner <br />permeability. Insitu permeability tests conducted in the Type 3 material following compaction <br />resulted in no failing permeabilities. The insitu permeability test results ranged from 7.0 x 10~ <br />cm/sec to 8.8 x108 cm/sec and averaged 6 x 10'cm/sec (58 tests). Laboratory permeability tests <br />of 3 samples of Type 3 material were performed in strict accordance with ASTM procedures. These <br />samples were obtained from insitu permeability test locations and prepared to duplicate the insitu <br />moisture and density conditions. The results of the laboratory permeability testing as well as the <br />corresponding insitu permeability test results for these three samples are presented in Table 2. <br />TABLE 2 <br />COMPARISON OF LABORATORY AND INSITU <br />PERMEABILITY (CM/SEC) <br />Sample Laboratory Field <br />Ac 29/44 2.6 x 10~ 2.1 x 10° <br />Ac 32/52 2.4 x 10~ 1.2 x 10~ <br />Ac 33/53 9.4 x 10' 2.0 x 10~ <br />As shown in Table 2, comparison of the field and laboratory permeability test results for the Type <br />3 material indicates excellent agreement between the two methods with a variance which is within <br />the range of repeatability for the test methods utilized. <br />aY ~ 17 Jecl o. <br /> <br />
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