with Section 01450A CHEMICAL DATA QUALITY CONTROL.
1.8
SCHEDULING
The Contractor shall notify the Contracting Officer [_____] calender days
prior to the start of excavation of contaminated material. The
[Contracting Officer will] [Contractor shall] be responsible for contacting
regulatory agencies in accordance with the applicable reporting
requirements.
PART 2
PRODUCTS
2.1
BACKFILL
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NOTE: If contaminated material removal is part of a
larger project and a backfilling specification is
needed for the project as a whole, refer to another
specification such as Section 02315 EXCAVATION,
FILLING AND BACKFILLING FOR BUILDINGS for Buildings,
for backfill requirements and delete the following
paragraphs.
In many cases, the degree of engineering control of
the materials used as backfill may not need to be as
stringent as described in this paragraph. In other
cases, such as under pavements, special compaction
and material requirements may apply and the
specification will need to be revised to address
these special requirements or another specification
section should be referenced.
Backfill and topsoil brought in from offsite is
usually tested to verify the material is clean.
Quality assurance samples taken by the Government
may also be prudent to verify the seller's claims by
analyzing for target analytes. Backfill is commonly
tested for the site specific contaminants being
cleaned up and/or is based on suspicion of
contamination at the site from which the backfill is
originating.
At some sites, previously contaminated material
which has been removed from the excavation is reused
as backfill following treatment to remove the
contaminant of concern.
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Backfill material shall be obtained from [the location indicated on the
drawings] [offsite sources approved by the Contracting Officer]. Backfill
shall be classified in accordance with ASTM D 2487 as GW, GP, GM, GC, SW,
SP, SM, SC, ML, MH, CL, or CH and shall be free from roots and other
organic matter, trash, debris, snow, ice or frozen materials. Backfill
material shall be tested for the parameters listed below at a frequency of
once per [3000] [_____] cubic meters yards. A minimum of one set of
classification tests shall be performed per borrow source. [One] [_____]
backfill sample per borrow source shall also be collected and tested for
the chemical parameters listed below.
SECTION 02111
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