Section 01320- Survey Control Page 2 of 2
January 2021
3066.21
PART 3 - EXECUTION
3.1
GENERAL
A.
CONTRACTOR shall obtain as-built elevation information using the site
coordinate system and datum (in the New Hampshire State Plane coordinate
system, vertical datum NAVD-88, as indicated on the Drawings).
The survey equipment used shall have a precision to the 0.01 feet.
As-built information shall include horizontal and vertical coordinate
information for the following:
1. All gas collection and control system pipes (solid and perforated) at 50
foot increments, at all changes in grade, and at all fitting locations;
2. All vertical gas extraction wells installed;
3, Pipe connection locations; and
4. Road crossing culverts.
As-built drawings shall be prepared using computer aided drafting software
and saved in .dwg format. The electronic file shall contain the survey points
used to generate the drawing.
As-built drawings are to be provided within 30 days of issuance of a
“Certificate of Substantial Completion.”
CONTRACTOR will provide ENGINEER with required as-built survey data with
progress payment requests. ENGINEER will not approve applications for
progress payments for payment, if the required as-built data does not reflect
site conditions through the requisition period. Final payment will not be made
until the as-built survey data has been reviewed and approved by ENGINEER.
[END OF SECTION 01320]
P:\3000s\ 3066.2 1\Source Files\Tech Specs\ Division 1 Specifications\01320 Survey.docx
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