Rotary Drilling
Rotary is a versatile drilling method ideal for deeper holes or when groundwater is present. We circulate drilling mud to stabilize the borehole, remove cuttings, and protect sensitive formations.
Advantages:
✔ Suitable for a wide range of soil and rock conditions
✔ Efficient for deep boreholes
✔ Supports various sampling and well installation methods
Percussion Drilling
Percussion drilling involves repeatedly striking the ground with a heavy drill bit to break up soil and rock, making it effective for penetrating hard formations. It’s commonly used in well installation and subsurface investigations.
Advantages:
✔ Effective in hard or boulder-rich soils
✔ Minimal water usage compared to rotary methods
✔ Simple equipment with low maintenance
Rotary-Percussion Drilling
Rotary-percussion drilling combines rotary drilling with high-frequency percussive force to efficiently break and penetrate hard rock and dense formations. Ideal for challenging subsurface conditions requiring both speed and power.
Advantages:
✔ Excels in hard rock and fractured zones
✔ Faster drilling rates in difficult geology
✔ Enables both sampling and well installation
Hollow Stem Auger (HSA) Drilling
HSA drilling allows us to obtain soil samples without introducing fluids into the borehole. It's particularly useful for environmental projects requiring uncontaminated samples and easy monitoring well installation.
Ideal for:
✔ Shallow environmental sampling
✔ Temporary and permanent well installations
✔ Contaminated sites
Mud Rotary Drilling
Mud rotary is a versatile drilling method ideal for deeper holes or when groundwater is present. We circulate drilling mud to stabilize the borehole, remove cuttings, and protect sensitive formations.
Advantages:
✔ Effective in loose or sandy soils
✔ Supports large-diameter boreholes
✔ Allows for continuous drilling with minimal collapse risk
Geotechnical Drilling
Our geotechnical drilling services support structural and civil engineering projects by providing accurate data on subsurface conditions. We offer boreholes, SPT, Shelby tube sampling, and more.
Support for:
✔ Residential and commercial development
✔ Retaining wall and slope analysis
✔ Pavement design and rehabilitation
Environmental drilling
Environmental drilling is used to investigate, monitor, and remediate subsurface contamination. It supports soil and groundwater sampling, well installation, and site characterization in a safe, compliant manner.
Advantages:
✔ Enables accurate subsurface data collection
✔ Supports regulatory compliance and risk assessment
✔ Compatible with various drilling methods and site conditions
Direct Push / Soil Boring / and Hand Augers
Direct Push, Soil Boring, and Hand Augers are commonly used environmental drilling methods for subsurface sampling, site assessment, and well installation. Each offers unique advantages depending on site conditions, depth requirements, and project scale.
Support for:
✔ Direct Push – Rapid, minimally invasive, and ideal for high-resolution sampling without generating drill cuttings
✔ Soil Boring – Versatile and effective for collecting soil profiles, supporting both environmental and geotechnical applications
✔ Hand Augers – Portable, low-cost, and perfect for shallow investigations in soft to medium soils without the need for power equipment
Well Abandonment (Residential & Commercial)
Well Abandonment (Residential & Commercial) involves the safe and compliant decommissioning of unused or obsolete wells to prevent groundwater contamination and eliminate physical hazards. Methods follow regulatory guidelines to ensure long-term environmental protection.
Advantages:
✔ Prevents cross-contamination between aquifers
✔ Eliminates safety and liability risks
✔ Meets local and state regulatory compliance
✔ Applicable for old residential wells and inactive commercial/industrial wells
Well Installation (Residential & Commercial)
Well Installation (Residential & Commercial) involves the professional design and construction of wells for water supply, monitoring, or remediation. Each installation is tailored to site conditions and project goals, ensuring long-term performance and compliance.
Support for:
✔ Reliable access to clean groundwater for residential or industrial use
✔ Supports environmental monitoring and remediation efforts
✔ Customizable to site geology and regulatory standards
✔ Durable construction for long-term functionality and safety
Air Sparge Wells
Our air sparge wells are designed to inject pressurized air into saturated soils, encouraging volatilization and biodegradation of pollutants. This process helps clean contaminated groundwater, especially in sites impacted by fuel or solvents.
Advantages:
✔ Effective VOC remediation
✔ Complements soil vapor extraction (SVE)
✔ Low-impact and cost-effective
Vapor Extraction Wells
We install vapor extraction wells that remove subsurface vapors through vacuum extraction systems. These are critical components in soil vapor remediation systems, removing petroleum hydrocarbons and industrial solvents from unsaturated zones.
Applications:
✔ Brownfield redevelopment
✔ Industrial spill sites
✔ Dry cleaner site remediation
Monitor Well Installation
Marksman Drilling LLC specializes in installing groundwater monitoring wells for environmental site assessments, regulatory compliance, and contamination tracking. We provide wells at varying depths using appropriate casing materials to ensure long-term integrity. These wells support periodic water sampling, plume monitoring, and hydrogeological studies.
Advantages:
✔ Environmental site investigations (Phase II ESA)
✔ Groundwater quality assessments
✔ Contamination plume delineation
Double-Cased Wells
We offer double-cased well construction for locations with multiple aquifers or unstable soils. This method protects the outer annulus and allows precise sampling of targeted formations while preventing cross-contamination.
Why it matters:
✔ Complies with strict environmental regulations
✔ Ensures well stability in difficult formations
✔ Suitable for sensitive or industrial sites
Chemical Environmental Injections
Our Direct Push Technology (DPT) chemical injection service delivers precise in-situ treatment of contaminated soils and groundwater. This method is highly effective for remediating volatile organic compounds (VOCs), petroleum hydrocarbons, and other pollutants.
Advantages:
✔ Targeted delivery with minimal surface disruption
✔ Ideal for tight access or sensitive sites
✔ Compatible with a wide range of remedial agents
✔ Real-time injection control for optimized results
