Profile: Quaternary Resource Investigations, L.L.C. specializes in environmental services and regulatory compliance, continues to expand its unique capabilities in geological subsurface mapping and regulatory compliance services. Our HTAS™ is a technology, which is used to collect continuous cores in hard to access areas, such as impoundments, pits, marshes, swamps and inaccessible locations at plants. Our Pulser™ system is used for drilling, soil probing and sampling.