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Geotechnical, Environmental and Materials Testing Consultants
Grand Junction - Montrose - Moab - Crested Butte - Rifle
(970) 245-4078 h fax (970) 245-7115 h geotechnicalgroup.com
2308 Interstate Avenue, Grand Junction, Colorado 81505
June 29, 2009
Chevron North America Exploration & Production Company
744 Horizon Court, Suite 140
Grand Junction, CO 81506
Attention: David K. Howard
Subject: Chevron Central Processing Facility-Stage 2
Garfield County Foundation Permit No. 11208
Switchgear Building
GEG Job No. 3,241
Document Number: PBSR-59836AVF-CIV-RPT-GEG-03241-00002
Dear Mr. Howard,
As requested, a Geotechnical Engineering Group (GEG) representative
performed observation and testing services on a full time basis during
construction of the structure foundations listed above by Garfield County Building
Permit No. The GEG representative tested driven pile foundation installation,
tested concrete properties, observed reinforcing steel placement and
documented structure to foundation anchorage for each of the structures. The
purpose of this letter is to present our review of observation and testing data and
our conclusions regarding final foundation construction of the Switchgear
Building. In summary, the Switchgear Building structures (Permit #11208) was
constructed in conformance with the referenced engineering design documents.
Reference Documents:
Foundation design sheets by Projects Associates, Incorporated
2033-201-CL-1101-01 dated 12/27/07 and revised 11/13/08 (all permits)
2033-201-20-AP-0002-02 dated 5/14/08 and revised 5/18/09 (all permits)
2033-240-30-SP-0004-01, Rev D dated June 21, 2008 (all permits)
2033-201-30-CI-1101-04, Rev 1 dated 6/19/08 (#11208)
2033-201-30-CI-1136-02, Rev 1 dated 6/19/08 (#11208)
Chevron Central Processing Facility-Stage 2 Page 2 of 2
Garfield County Foundation Permit Letter
Piles, 7-1-09
GEG Job No. 3241
Conclusions
Review of our records indicates proper driven pile installation, proper concrete
strength, proper reinforcing steel placement and proper structure to foundation
anchorage. Based on this review, we conclude the Switchgear Bulding
foundation was constructed in conformance with the referenced engineering
design documents.
We appreciate the opportunity to perform engineering services. If we can be of
further service or answer any questions regarding this letter, please call.
Sincerely,
GEOTECHNICAL ENGINEERING GROUP, INC.
Scott Godfrey, EIT
Project Engineer
Reviewed By:
John P. Withers, P.E.
Engineer
SEG:JPW:sg
1 cc: Chevron Eroom
1 cc: emailed to Mr. David K. Howard,
1cc: emailed to Tony Chiono, Elkhorn Construction