REV15278

• Permit No: M1980244
• IBM Index Class Name: Revision
• Doc Name: RELEVANT SECTIONS FROM FINAL REPORT CRESSON PROJECT QUALITY ASSURANCE MONITORING AND TEST RESULTS
• Type & Sequence: TR33
• Media Type: D
• Archive: No

2. CONTRACTOR shall condition Leak Detection Fill to allow a surface that
does not cause rutting or other deleterious effects.
F. Soil Liner Fill
1. Soil Liner Fill shall be placed within the limits of the valley leach facility as
shown on the DRAWINGS and shall begin only after completion of all, or
MANAGER and CERTIFYING ENGINEER approved portion of, excava[ion
and Structural Fill placement in the valley leach facility.
2. Material from Arear No. 2 or the area above the Prill Silo used for Soil Liner
Fill will be processed by the CONTRACTOR to meet project speccfications .
3. CONTRACTOR shall process, place and compact the Soil Liner FII to
achieve a coefficient of permeability of less than 1x10'6 cm/sec, measured
according to ASTM Method D5084, Method D. Any Soil Liner Fill no[
meeting the permeability specification shall be removed and replaced with
material meeting the permeability specification, at no additional cost to
CC$ V.
4. CONTRACTOR shall place and compact the Soil Liner Fill in loose lifts such
that the compacted lift thickness is a minimum of 12-inches.
5. CONTRACTOR shall compact the Soil Liner Fill to at least 95 percent of
the maximum dry density as determined by the Standard Proctor density
test (ASTM D6981. Area No. 2 material shall be compacted at a moisture
content between 3 percent below and at optimum moisture content. The
moisture content and density shall be uniform throughout the lift. If the
Soil Liner Fill cannot be conditioned to meet the placement specifications,
the material shall be removed and replaced with new Soil Liner FiII at the
CONTRACTOR's expense. The CONTRACTOR shall reduce the clod size
of the soil liner fill to a size that is acceptable to the CERTIFYING
ENGINEER, the method by which will be approved by CERTIFYING
ENGINEER and MANAGER prior to implementation.
6. The moisture content of the Soil Liner FI! shall be uniform throughout prior
to and during compaction of the material. CONTRACTOR shall be
responsible for meeting moisture content and compaction
SPECIFICATIONS. If the Soil Liner Fill cannot be conditioned to meet the
placement SPECIFICATIONS, the material shall be removed and replaced
with new Soil Liner Fill at no additional cost to CC&V. MANAGER may
require CONTRACTOR to moisture condition Soil Liner Fill at stockpile at
least 24 hours prior to the Soil Liner Fill being broughUplaced within the
Phase III valley leach facility limiu.
7. CONTRACTOR shalt place Soif Liner Fifl to form a continuous monolithic
material. If a lift of compacted Seil Liner Fill dries out during placement
operations, CONTRACTOR shall scarify, moisture condition the dry soil
and recompact the lift. If a lift of compacted Sail Liner Filt becomes overly
wet due to precipitation or over watering, CONTRACTOR shall allow the
wet soil to dry to the specified moisture content range before
recompaction of fill and placement of geasyrtthetic materials.
Section OZZ00 Page 7 7 of 75 March 2, 1999
Earthworks Gilder Assodates Revision 6