APPROVED ELECTRONIC SIGNATURES

This appendix contains the Approved Electronic Signature for Certification of Materials and Weights. All approved Electronic Signatures will expire 5 years from the date of Director of Construction and Materials Signature.  

Weighmaster/Expiraton Date	Company Name	Source Name/A-Number/District
Mary Worrell – 1/15/14	Martin Marietta	Ames Mine (A85006) / 1
Sandra Hill – 1/15/14	Martin Marietta	Ames Mine (A85006) / 1
Lori Engelby – 1/15/14	Martin Marietta	Ames Mine (A85006) / 1
Nikki Hanna – 4/23/14	Martin Marietta	Fort Dodge Mine (A94002) / 1
Lisa George-Bacon – 4/23/14	Martin Marietta	Fort Dodge Mine (A94002) / 1
John Johnson – 7/11/14	Hallett Materials	Exira (A05506) / 4
Ronda Hammes – 10/14/15	Martin Marietta	Weeping Water, Ft. Calhoun, Springfield /4 (ANE002), (ANE010), (ANE012)
Lisa Maher – 10/14/15	Martin Marietta	Weeping Water, Ft. Calhoun, Springfield /4 (ANE002), (ANE010), (ANE012)
Deb Gjerde – 10/14/15	Martin Marietta	Weeping Water, Ft. Calhoun, Springfield /4 (ANE002), (ANE010), (ANE012)
Theresa McMains – 10/14/15	Martin Marietta	Weeping Water, Ft. Calhoun, Springfield /4 (ANE002), (ANE010), (ANE012)
Julie Bauers – 10/14/15	Martin Marietta	Weeping Water, Ft. Calhoun, Springfield /4 (ANE002), ANE010), (ANE012)
Robin Cass – 10/14/15	Martin Marietta	Weeping Water, Ft. Calhoun, Springfield /4 (ANE002), (ANE010), (ANE012)
Jennifer Stanley – 4/12/17	Martin Marietta	Raccoon River Sand (A25518) / 4
Claud Harris – 4/12/17	Martin Marietta	Raccoon River Sand (A25518) / 4
Jeff Werden – 4/12/17	Martin Marietta	Winterset, East Winterset / 4 (A61012), (A61024)
Mary A. Green – 4/12/17	Martin Marietta	Earlham (A61026), (A61032) / 4
Danny Van Patten - 4/18/17	Martin Marietta	Sully Mine (A50002) / 1
Wesley Alertsen- 4/18/17	Martin Marietta	Malcom Mine (A79002) / 1
Brenda Liles – 4/18/17	Martin Marietta	Sully Mine (A50002) / 1
Joel Tichy – 4/18/17	Martin Marietta	Ferguson (A64002) / 1
Donna Hughes – 4/18/17	Martin Marietta	Marshalltown Sand (A64502) / 1
Mark Haskell - 4/18/17	Martin Marietta	Marshalltown Sand (A64502) / 1
Rex A. Gaskill - 4/18/17	Martin Marietta	Marshalltown Sand (A64502) / 1
Thomas Owens Jr. - 4/18/17	Martin Marietta	Colfax Sand (A50502) / 1
Viki Sauerman - 4/18/17	Martin Marietta	Saylorville Sand (A77534) / 1
Craig Groover - 4/18/17	Martin Marietta	Saylorville Sand (A77534) / 1
Diane Thomas – 4/18/17	Martin Marietta	Durham Mine (A63002) / 5
Joyce Davis - 4/18/17	Martin Marietta	Durham Mine (A63002) / 5
Daryl Scott - 4/18/17	Martin Marietta	New Harvey Sand (A63512) / 5
Cherene M Vote – 5/4/17	Martin Marietta	Moore (A76004) / 2
Sandra Johnson – 5/4/17	Martin Marietta	Mason City (A17020) / 2
Brenda L. Benjamin – 5/4/17	Martin Marietta	Moore (A76004) / 2
Michell Thilges – 5/4/17	Martin Marietta	Pedersen (A46014) / 2
Tonya Holmes – 5/11/17	Martin Marietta	Harris (A98002) / 2
Karen Ries – 5/11/17	Martin Marietta	Mason City (A17020) / 2
Doug Seela – 5/11/17	Knife River Midwest	Voss (A99002) / 2
Becca Williams – 5/11/17	Knife River Midwest	Voss (A99002) / 2
Aaron L. Conn – 5/11/17	Martin Marietta	New Harvey Sand (A63512) / 5
Linda Jones – 5/11/17	Martin Marietta	Cedar Rapids (A57018) / 6
Marjean McMahon – 5/17/17	Martin Marietta	Cedar Rapids (A57018) / 6
Jeanne M Stoner – 5/17/17	Martin Marietta	Linn County Sand (A57534) / 6
Tammy Draper-Hansen- 5/31/17	Martin Marietta	Alden (A42002) / 1
Coby Metz – 5/31/17	Martin Marietta	Colfax Sand (A50502) / 1
Jason Hinkle – 5/31/17	Martin Marietta	Fort Dodge Mine (A94002) / 1
Rick A. Burchard – 5/31/17	Martin Marietta	Ferguson (A64002) / 1
Mary Bossung – 6/13/17	Martin Marietta	Weeping Water (ANE002) / 4
Becky Bowers  -  8/13/17	L.G. Everist, Inc.	Track 6 / 3
Sandy Caskey – 8/13/17	L.G. Everist, Inc.	Track 6 / 3
Mark Bowden – 8/13/17	L.G. Everist, Inc.	Track 6 / 3
Steven Froid - 8/31/17	Martin Marietta	Cedar Rapids (A57018) / 6
Danielle Fiorini – 9/11/17	Martin Marietta	Earlham-Mason, Earlham-Thrailkill / 4 (A61026), (A61032)
Jolene McMahon – 11/21/17	Higman Sand & Gravel	Akron (A75502) / 3
Jo Ann Decker – 11/21/17	Higman Sand & Gravel	Akron (A75502) / 3
Terri Day – 12/3/17	Martin Marietta	Cedar Rapids (A57018) / 6
Lyndsey Hartley -   04/22/18	Martin Marietta	Springfield / 4, Weeping Water / 4 (ANE012), (ANE002)
Lisa Roach -   05/9/18	Martin Marietta	Springfield / 4, Weeping Water / 4 (ANE012), (ANE002)