2009-12-21_REVISION - M1980244 ‎(30)‎

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 12/21/2009
• Doc Name: QA Liner Recert- App. E, Technical Specifications
• From: CC&V
• To: DRMS
• Type & Sequence: AM9
• Media Type: D
• Archive: No

geosynthetics, in accordance with the repair requirements of Sections 02776.0 and 02777.0
of these SPECIFICATIONS, and recover, at no cost to CC &V.
9. CONTRACTOR shall place Low Volume Solution Collection Fill at a rate such that no
single area of 350,000 square feet of geomembrane liner is exposed to ultraviolet light for
more than 180 days.
10. CONTRACTOR shall provide close continuous monitoring at the point of placement
during the placement of the Low Volume Solution Collection Fill over geosynthetics.
11. CONTRACTOR shall verify the final thickness of Low Volume Solution Collection Fill to
determine compliance with this SPECIFICATION. CONTRACTOR shall record
verification location, elevation, and thickness. CQA Monitor shall wilness all verification
measurements. CONTRACTOR will submit a method of verifying Low Volume Solution
Collection Fill depth to MANAGER for approval. Grade markers shall be placed on a 50-
by -50 -foot grid with additional points required for breaks in grade. CONTRACTOR shall
remove all grade markers under supervision of CQA Monitor after verification
measurements have been approved by MANAGER and CERTIFYING ENGINEER and
will backfill holes with Low Volume Solution Collection Fill. Areas with deficient thickness
shall be reworked by CONTRACTOR, until acceptable measurements are obtained. If
MANAGER or CERTIFYING ENGINEER suspects the occurrence of any damage to the
underlying geosynthetics, MANAGER will instruct CONTRACTOR to remove Low
Volume Solution Collection Fill to expose the geosynthetics. CONTRACTOR shall
uncover, repair any observed damage of the underlying geosynthetics, in accordance with
• the repair requirements of Sections 02776.0 and 02777.0 of these SPECIFICATIONS and
recover, at no cost to CC &V.
12. CONTRACTOR will provide adequate illumination as approved by MANAGER, if Low
Volume Solution Collection Fill placement is carried out at night. A minimum of 2 -foot
candles measured at the synthetic liner, shall be used when Low Volume Solution Collection
Fill placement is carried out at night.
G. 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, excavation and Structural Fill placement
in the valley leach facility.
2. CONTRACTOR shall process, place and compact the Soil Liner Fill 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 not meeting the permeability specification
shall be removed and replaced with material meeting the permeability specification, at no
additional cost to CC &V.
3. CONTRACTOR shall place and compact the Soil Liner Fill in loose lifts such that the
compacted lift thickness is a minimum of 12- inches.
4. 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 D698). The moisture
49 content shall be within +3% to -2% of the optimum moisture content. Both moisture and
density shall be uniform throughout the lift. If the Soil Liner Fill cannot be conditioned to
Section 02200 Page 12 of 18 September 3, 2008
Earthworks Revision 1
S: \Projects \1125E CCV CQA \I - Tech Specs \02200.r1.doc