February 18, 2019 Page 3
20190218 Nashua Phase Il] CQA Proposal.docx
materials that have the proper manufacturer documentation will be accepted for use in
construction. Conformance samples of the accepted geosynthetics will be obtained either at
the manufacturer’s facility or from material delivered to the Project site. Sanborn Head will
select the rolls to be sampled for testing at a laboratory experienced in geosynthetic testing.
Conformance test results will be reviewed before approval is given for deployment of the
geomembrane and/or geocomposite.
During construction, Sanborn Head will:
= Provide up to two Monitors to document activities. For budgeting purposes, we assume
that one Monitor will be needed throughout construction and one additional Monitor will
be needed for 4 weeks during the liner system installation;
= Collect samples for conformance testing from the geomembrane and geocomposite;
® Observe and document the geosynthetic installation contractor's work and quality
control procedures;
=" Obtain samples of earth materials including Structural Fill, Drainage Sand, Screened Till,
and roadway soils for testing at a subcontracted geotechnical laboratory;
=" Perform field moisture/density tests on compacted Structural Fill, Screened Till, and
roadway materials;
= Collect samples of welded geomembrane seams and forward them to a subcontracted
geosynthetics laboratory for destructive testing; and
a Prepare Daily Field Reports to document the day-to-day construction activities.
Task 2 Construction Meetings/Documentation
Sanborn Head’s CQA Managing Engineer and/or Site Manager will attend weekly
construction progress meetings with the contractor and the City. Construction progress
meetings are anticipated to be held weekly at the site and will include discussions about the
current work progress, planned activities for the upcoming week, and new business or
revisions to the Project. Sanborn Head will take minutes of the meetings, which will be
issued to the City, the contractor, and the NHDES. Sanborn Head will also prepare bi-weekly
summaries of the construction progress for the City's use in submitting bi-weekly progress
updates to the NHDES Solid Waste Bureau as required by the Solid Waste Rules.
Task 3 CQA Report
Sanborn Head will prepare a CQA Report that documents the observations made during
construction and includes copies of submittal review forms, geotechnical and geosynthetic
laboratory test results, pipe pressure test results, geosynthetic installation documentation
and Record Drawings. The Record Drawings will be based on the Construction Drawings
and will show the surveyed as-built locations and elevations of the Project components as
provided by the contractor. As appropriate, design details will be modified to depict the
actual installations. The CQA Report will be prepared under the direction of a Professional
Engineer licensed in the State of New Hampshire and submitted to the NHDES following
review by the City.
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SANBORN | HEAD
