1 - the Envirostor

2.6.5 Geotextile Placement
Geotextile fabric was placed as required by Section 07115 of the technical
specifications and as described herein. Correspondence from the
manufacturer provided additional instructions regarding storage, handling
and installation, and is included in Appendix D (James M. Cramer, Vice
President, Nilex USA Inc., California Branch, letter dated February 13,
1988). Following the manufacturer's instructions, the seams of the
geotextile were not bonded, but were overlapped two feet to provide proper
continuity of the fabric.
2.6.6 Gravel Placement
The Class 2 aggregate base layer for the top 6 inches of the cap was placed
as required by Section 02200 of the technical specifications. The
aggregate was dumped and spread with a Massey Ferguson loader and compacted
with a Bomag 100 roller. Moisture was added as required to achieve proper
compaction. The base was spread and compacted so that the trucks always
ran over the compacted base and did not disturb the liner. Compaction
around the wells, fence tubes and Christy boxes was achieved with a hand-
held Wacker rammer-type compactor.
2.6.7 Pavinq of the Drivewav and Surface chi^ Seal
Paving of the driveway and installation of the chip seal coating on the cap
was performed as required by Sections 02510 and 02605 of the technical
specifications. Inspection of the site after rainfall indicated that
drainage from the site was working effectively and no ponding was evident.
Some additional work was performed to protect the DHS monitoring wells on
site and provide ease of access to these wells. Christy boxes were
installed around five monitoring wells within the cap area, flush with the
final grade. Structural concrete was used to cement inside the box and
bring the well grout back up to final grade.