Member Spotlight:

Seaman Corporation traces its origins to a basement workshop in Canal Fulton, Ohio that was equipped with two sewing machines and fueled by Norm Seaman's dedication to create fabrics that could set a new world standard for versatility and performance. Today, Seaman Corporation has turned that dream into a reality with modern corporate headquarters, product development laboratories and a primary manufacturing facility in Wooster, Ohio. In addition, the company also has a state-of-the-art weaving and coating facility in Bristol, Tennessee. Each discipline within the company is committed to maintaining the founding principles, setting the highest standards for quality, innovation and customer service. Seaman Corporation fabrics are used in high performance roof systems, geomembrane liners, truck tarps, architectural structures and recreational products. For more information on Seaman Corporation, please visit their website at or contact Bill Shehane at


Associate Members

AMEC Earth and Environment
John F. Lupo, Ph.D., P.E.
Colorado CenterTower 2
2000 S Colorado Blvd,
10th Floor
Denver, CO  80222 USAT
Amos Sales Associates, Ltd.
Paul Amos
3314 Forest Village Dr.
Kingwood, TX 77339
(713) 825-1432
Stan Slifer
5585 W. Airport RoadTower 2
Sedalia, CO 80135
(800) 525-2424
(303) 471-1522


DemTech Services, Inc.
Dave McLaury
P. O. Box 2165
Placerville, CA 95667
(888) 324-9353 voice
(530) 621-0150 fax
GeoStorage Corp.
Terry Sheridan, P.E.
15 Edgewood Rd.
Rumson, NJ, 07760
732-865-3635 (cell)
hapco Hapco, Inc.
Chuck George
390 Portage Blvd.
Kent, OH 44240
330-678-9353 voice
330-677-8282 fax
Ian D. Peggs, Ph.D., P.E., P. Eng., DABFET
Geosynthetic Materials Performance Consulting and Testing Worlwide
(561) 369-0795 voice
(561) 809-3444 cell
Ian.Peggs (Skype)
jspearlogo J Spear Associates
JW Spear Sr, P.E.
325 W. Vine Street
Milwaukee, WI 53212-3606
(414)263-5715 voice
(800)668-7697 fax
leaklocationlogo Leak Location Services, Inc.
Matt Kemnitz
16124 University Oak
San Antonio, TX 76249
(210)408-1241 voice
(210)408-1242 fax
leister Leister Technologies, LLC
Allen Bullock
1275 Hamilton Parkway
Itasca, IL 60143
(630) 760-1000 office
+1 603 361-9023 direct line
+1 603 407-7231 mobile
MillerWeldmaster Miller Weldmaster Company
Jeannette Hendrickson
Marketing Manager
4220 Alabama Ave. S.W.
Navarre, Ohio 44662
Tel: 330-833-6739
Fax: 330-837-2828
PolyWeld USA PolyWeld USA, Inc.
Ali Ahmad
1620 E. Richey Rd.
Houston, TX 77073
(281) 821-4156
Skpe: mes227
RDD-logo RRD International Corp.
Mark Smith
P.O. Box 4049
Incline Village, NV 89450 USA
Skpe: mes227
Thiel Thiel Engineering
Rick Thiel
PO Box 1010
9768 Yuba Ranch Way
Oregon House, CA 95962
phone (530) 692-9114
fax (530) 692-9115
cell (530) 701-1222
Weaver Boos Weaver Consultants Group
Tamara Perkins
400 Ann Street NW, Suite 201A
Grand Rapids, MI 49504
(616) 458-8052