Nationally recognized independent testing laboratory. Our geotechinal and construction materials testing laboratories are AASHTO ISO 17025 accredited and U.S. Army Corps of Engineers validated. Services include: laboratory testing; construction field testing; geotechnical engineering; subsurface exploration and sampling services; and environmental services. We also provide geologic consulting services including: quality trouble shooting; reserves analyses; QA/QC training seminars; core logging; freeze-thaw; and site evaluations. Members - ASTM, NSSGA, IMAA and seven additional state aggregate associations.