STEHLY BROTHERS DRILLING, INC

Stehly Brothers Drilling, Inc. specializes in geotechnical drilling and subsurface exploration services, leveraging advanced rotary and percussion drilling techniques to support civil infrastructure, environmental remediation, and utility installation projects. The company’s technical expertise includes borehole logging, soil and rock sampling, installation of monitoring wells, and subsurface data collection for geologic characterization. Their operational focus centers on precision drilling in challenging terrain, with an emphasis on minimizing environmental disruption and ensuring regulatory compliance during field operations. Key differentiators include field-ready mobilization, equipment calibration for subsurface accuracy, and adherence to ASTM and USGS sampling protocols, enabling reliable data delivery for engineering and environmental assessments. Award history does not provide sufficient detail to identify specific federal agencies or programmatic relationships. Consequently, no confirmed agency experience can be inferred from available records. The primary NAICS code 221310 corresponds to Water Supply and Irrigation Systems, which in practice indicates the contractor’s involvement in drilling for water well construction, aquifer testing, and groundwater monitoring infrastructure. While no additional NAICS codes are available to define vertical specializations, their core work aligns with civil engineering and environmental compliance sectors requiring subsurface access and geologic data acquisition. Stehly Brothers Drilling, Inc. is structured as a small business under the 2L entity classification and is headquartered in Valley Center, California. The company operates with a focused, field-centric model and holds no federal certifications such as 8(a), HUBZone, or WOSB. Its geographic presence is localized to the Western U.S., with operations calibrated to regional geologic conditions and water resource needs. The firm positions itself as a reliable subsurface services provider for public and private infrastructure projects requiring precise, compliant drilling solutions.