of the backfill is not critical, modify this
paragraph by replacing the density testing
requirements with procedural requirements for
compaction.
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Approved backfill shall be placed in lifts with a maximum loose thickness of
[200] [_____] mm [8] [_____] inches. Soil shall be compacted to [90]
[_____] percent of [ASTM D 698] [ASTM D 1557] maximum dry density. Density
tests shall be performed at a frequency of once per [930] [_____] square
meters [10,000] [_____] square feet per lift. A minimum of [one density
test] [[_____] density tests] shall be performed on each lift of backfill
placed. Field in-place dry density shall be determined in accordance with
ASTM D 1556, ASTM D 2167, or ASTM D 2922. If ASTM D 2922 is used, a
minimum of one in ten tests shall be checked using ASTM D 1556 or ASTM D
2167. Test results from ASTM D 1556 or ASTM D 2167 shall govern if there
is a discrepancy with the ASTM D 2922 test results.
3.9
DISPOSAL REQUIREMENTS
Offsite disposal of contaminated material shall be in accordance with
Section 02120 TRANSPORTATION AND DISPOSAL OF HAZARDOUS MATERIALS.
3.10
CLOSURE REPORT
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NOTE: In addition to progress photos, video tapes
have been used at some sites to record site
activities.
**************************************************************************
[_____] copies of a Closure Report shall be prepared and submitted within
[14] [_____] calender days of completing work at the site. The report
shall be labeled with the contract number, project name, location, date,
name of general contractor, and the Corps of Engineers District contracting
for the work. The Closure Report shall include the following information
as a minimum:
a. A cover letter signed by a [responsible company official]
[Professional Engineer registered in the State of [_____] who is a
responsible company official] certifying that all services
involved have been performed in accordance with the terms and
conditions of the contract documents and regulatory requirements.
b. A narrative report including, but not limited to, the
following:
criteria;
(2) excavation logs;
(3) field screening readings;
(4) quantity of materials removed from each area of
(5) quantity of water/product removed during dewatering;
SECTION 02111
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