{"id":220679,"date":"2024-11-29T16:23:51","date_gmt":"2024-11-29T16:23:51","guid":{"rendered":"https:\/\/www.solinst.com\/403-summary-of-drilling-methods-and-techniques\/"},"modified":"2026-05-07T21:26:11","modified_gmt":"2026-05-07T21:26:11","slug":"403-summary-of-drilling-methods-and-techniques","status":"publish","type":"page","link":"https:\/\/www.solinst.com\/en-gb\/products\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403-summary-of-drilling-methods-and-techniques\/","title":{"rendered":"403 Summary of Drilling Methods and Techniques"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;H1 and breadcrumbs&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;792ca5bd-0808-46bd-9ce7-3bcb8e74f4d3&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;4b28f470-0d73-4e9d-b92d-e6f41f2cea24&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.25.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;3078f328-b50a-467d-9906-3143dabcd7ac&#8221; header_text_align_tablet=&#8221;&#8221; header_text_align_phone=&#8221;&#8221; header_text_align_last_edited=&#8221;on|desktop&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h1 role=\"heading\" aria-level=\"2\" data-uw-rm-heading=\"level\">Summary of Drilling Methods and Techniques<\/h1>\n<p>[\/et_pb_text][dsm_breadcrumbs disabled_on=&#8221;on|off|off&#8221; admin_label=&#8221;breadcrumbs below landing pages with mobile view off&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; home_icon_text_color=&#8221;#d6d6d6&#8243; global_module=&#8221;4283&#8243; global_colors_info=&#8221;{}&#8221;][\/dsm_breadcrumbs][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;Mobile-Only Nav with Offset&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;4759a92f-4b27-4854-bb2c-299854634e93&#8243; display_conditions=&#8221;W10=&#8221; sticky_offset_top=&#8221;127px&#8221; global_module=&#8221;2935&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; width=&#8221;90%&#8221; custom_margin=&#8221;0px||0px||true|false&#8221; custom_padding=&#8221;0px||0px||true|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_code admin_label=&#8221;403 Mobile Nav &#8211; Select Dropdown&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_css_free_form=&#8221;select {||||      font-size: 1em; \/* Adjust font size *\/||      padding: 10px;   \/* 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value=\"https:\/\/www.solinst.com\/products\/multilevel-systems-and-remediation\/why-multilevels\/why-multilevels.pdf\">-Download PDF<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/datasheet\/\">Datasheet<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/datasheet\/applications-advantages-of-cmt-multilevel-systems\/\">-Applications and Advantages of CMT<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/datasheet\/multichannel-tubing\/\">-Multichannel Tubing<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/datasheet\/seals-and-sand-packs\/\">-Seals and Sand 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[et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/products\/multilevel-systems-and-remediation\/403-cmt-multilevel-system\/operating-instructions\/\">Instructions<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-multilevel-system-assembly-manual\/\">-CMT Multilevel System Assembly Manual<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-multilevel-system-assembly-manual\/pre-installation-requirements\/\">&#8211;Pre-Installation Requirements<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-multilevel-system-assembly-manual\/introduction\/\">&#8211;Introduction<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-multilevel-system-assembly-manual\/preparing-for-cmt-installation\/\">&#8211;Preparation<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-multilevel-system-assembly-manual\/assembling-standard-cmt-systems\/\">&#8211;Assembling Standard CMT Systems<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-multilevel-system-assembly-manual\/marking-and-cutting-cmt-tubing\/\">&#8211;Marking and Cutting the Tubing<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-multilevel-system-assembly-manual\/403-manual-cutting-outer-ports-and-vent-holes\/\">&#8211;Cutting Outer Ports and Vent Holes<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-multilevel-system-assembly-manual\/configuring-tubing-bottom\/\">&#8211;Configuring Tubing Bottom<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-multilevel-system-assembly-manual\/attaching-cmt-tubing-centralizers\/\">&#8211;Attaching Tubing Centralisers<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-multilevel-system-assembly-manual\/cmt-multilevel-system-placement\/\">&#8211;CMT Placement<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-multilevel-system-assembly-manual\/attaching-cmt-standard-wellhead\/\">&#8211;Attaching Standard Wellhead<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-multilevel-system-assembly-manual\/optional-cmt-multi-purge-manifold-assembly\/\">&#8211;Optional Multi-Purge Manifold Assembly<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-multilevel-system-assembly-manual\/monitoring-options\/\">&#8211;Monitoring Options<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-multilevel-system-assembly-manual\/cmt-specifications\/\">&#8211;CMT Specifications &amp; Considerations<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-multilevel-system-assembly-manual\/intallationterms-and-conditions\/\">&#8211;Terms and Conditions<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-multilevel-system-assembly-manual\/table-of-contents\/\">&#8211;Table of Contents<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/products\/multilevel-systems-and-remediation\/403-cmt-multilevel-system\/operating-instructions\/cmt-manual\/403-cmt-manual.pdf\">&#8211;Download (PDF)<\/option><!-- [et_pb_line_break_holder] -->\t<!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/\">-Narrow CMT Multilevel System Assembly Manual<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/pre-installation-requirements\/\">&#8211;Pre-Installation Requirements<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/introduction\/\">&#8211;Introduction<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/preparation\/\">&#8211;Preparation<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/assembling-standard-403n-narrow-cmt-systems\/\">&#8211;Assembling Standard CMT Multilevel Systems<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/marking-narrow-cmt-tubing\/\">&#8211;Marking the CMT Tubing<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/cutting-ports-and-vent-holes\/\">&#8211;Cutting the Ports and Vent Hole<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/configuring-the-bottom-of-narrow-cmt-tubing\/\">&#8211;Configuring the Bottom of the CMT Tubing<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/narrow-cmt-placement\/\">&#8211;Narrow CMT Placement<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/attaching-standard-wellhead\/\">&#8211;Attaching the Standard Wellhead<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/optional-flow-control-monitoring-assembly\/\">&#8211;Optional Flow Control Monitoring Assembly<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/optional-multi-purge-manifold-assembly\/\">&#8211;Optional Multi-Purge Manifold Assembly<\/option><!-- [et_pb_line_break_holder] --><option value=\"CMT Installation with Sand and Bentonite Cartridges\">&#8211;CMT Installation with Sand and Bentonite Cartridges<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/cmt-installation-design-example\/\">&#8211;Installation Design Example<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/preparing-sand-and-bentonite-cartridges\/\">&#8211;Sand and Bentonite Cartridge Preparation<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/sand-bentonite-cartridge-installation\/\">&#8211;Sand and Bentonite Cartridge Installation<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/narrow-cut-port-assembly\/\">&#8211;Narrow CMT Port Assembly<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/installing-narrow-cmt-sand-cartridges\/\">&#8211;Installing Narrow CMT Sand Cartridges<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/installing-spring-cartridges\/\">&#8211;Installing Narrow CMT Spring Cartridges<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/monitoring-options\/\">&#8211;CMT Multilevel System Monitoring Options<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/terms-and-conditions\/\">&#8211;Terms and Conditions<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/403n-narrow-cmt-assembly-manual\/table-of-contents\/\">&#8211;Table of Contents<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/products\/multilevel-systems-and-remediation\/403-cmt-multilevel-system\/operating-instructions\/narrow-cmt-manual\/403n-cmt-manual.pdf\">&#8211;Download (PDF)<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/purge-and-grout-adaptor-instructions-109095\/\">-Purge \/ Grout Adaptor Operating Instructions<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/products\/multilevel-systems-and-remediation\/403-cmt-multilevel-system\/operating-instructions\/purge-grout-adaptor\/purge-grout-adaptor.pdf\">&#8211;Download (PDF)<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/constructing-dual-cmt-ports\/\">-Constructing Dual CMT Ports<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/products\/multilevel-systems-and-remediation\/403-cmt-multilevel-system\/operating-instructions\/constructing-dual-cmt-ports.pdf\">&#8211;Download (PDF)<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/summary-of-drilling-methods-and-techniques\/\">-Summary of Drilling Methods and Techniques<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/operating-instructions\/cmt-specifications-and-considerations\/\">-CMT Specifications and Considerations<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/products\/multilevel-systems-and-remediation\/403-cmt-multilevel-system\/operating-instructions\/multilevel-specifications.pdf\">&#8211;Download (PDF)<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/403-cmt-faq\/\">FAQ<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/technical-bulletins-and-case-studies\/\">Trained CMT Contractors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/products\/multilevel-systems-and-remediation\/403-cmt-multilevel-system\/cmt-contractor-form.php\">-Become a Trained Contractor<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/products\/multilevel-systems-and-remediation\/403-cmt-multilevel-system\/403addon\/trained-cmt-contractors.pdf\">&#8211;Download (PDF)<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/technical-bulletins-and-case-studies\/\">Technical Bulletins and Case Studies<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/technical-bulletins-and-case-studies\/high-resolution-vapor-intrusion-monitoring\/\">-CMT for High Resolution Vapour Intrusion Monitoring<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/products\/multilevel-systems-and-remediation\/403-cmt-multilevel-system\/technical-bulletins\/high-resolution-vapor-intrusion-monitoring.pdf\">&#8211;Download (PDF)<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/technical-bulletins-and-case-studies\/sampling-in-multilevels-options-and-helpful-hints\/\">-Sampling in Multilevels: Options and Helpful Hints<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/products\/multilevel-systems-and-remediation\/403-cmt-multilevel-system\/403addon\/cmt-options-helpfulhints.pdf\">&#8211;Download (PDF)<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/technical-bulletins-and-case-studies\/cmd-systems-for-the-lust-market\/\">-CMT Systems for the LUST Market<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/products\/multilevel-systems-and-remediation\/403-cmt-multilevel-system\/403addon\/cmt-forlust-market.pdf\">&#8211;Download (PDF)<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/403-cmt-multilevel-systems\/technical-bulletins-and-case-studies\/cmt-vapor-monitoring\/\">-CMT Vapour Monitoring<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/products\/multilevel-systems-and-remediation\/403-cmt-multilevel-system\/403addon\/vapor-monitoring.pdf\">&#8211;Download (PDF)<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/multilevel-systems\/\">Multilevel Systems<\/option><!-- [et_pb_line_break_holder] --><\/select>[\/et_pb_code][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; specialty=&#8221;on&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;5a5bca26-a9a5-4e6c-8fca-d64da3bdcd40&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_4&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_menu menu_id=&#8221;34&#8243; admin_label=&#8221;403 Main Nav&#8221; _builder_version=&#8221;4.27.2&#8243; 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background_last_edited=&#8221;on|desktop&#8221; global_colors_info=&#8221;{}&#8221; sticky_transition=&#8221;on&#8221;]<\/p>\n<h2><strong><\/strong><\/h2>\n<h2><strong><\/strong><\/h2>\n<h2><strong><\/strong><\/h2>\n<p>&nbsp;<\/p>\n<h2>Depth Discrete Groundwater Monitoring<\/h2>\n<p><b>Reduce Costs and Field Time<\/b><\/p>\n<p>[\/et_pb_slide][\/et_pb_slider][et_pb_slider disabled_on=&#8221;on|off|off&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; link_option_url=&#8221;https:\/\/www.solinst.com\/instruments\/groundwater-samplers\/410-peristaltic-pumps\/?utm_source=solinst&#038;utm_medium=WC-global-sidebar-position2&#038;utm_campaign=410-101d&#8221; global_module=&#8221;53561&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_slide heading=&#8221;Automated Pumping with DrawDown Mode&#8221; button_text=&#8221;New Peristaltic Pump Mk5&#8243; button_link=&#8221;https:\/\/www.solinst.com\/instruments\/groundwater-samplers\/410-peristaltic-pumps\/?utm_source=solinst&amp;utm_medium=WC-global-sidebar-position2&amp;utm_campaign=410-101d&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; header_text_color=&#8221;#000000&#8243; background_color=&#8221;RGBA(255,255,255,0)&#8221; background_enable_color=&#8221;on&#8221; background_image=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2026\/01\/101d-water-level-drawdown-meter-2-965&#215;500-1.webp&#8221; background_enable_image=&#8221;on&#8221; background_size=&#8221;contain&#8221; custom_button=&#8221;on&#8221; button_bg_color=&#8221;#f58025&#8243; button_border_width=&#8221;2px&#8221; button_border_radius=&#8221;20px&#8221; button_font=&#8221;|600|||||||&#8221; button_custom_margin=&#8221;||||false|false&#8221; button_custom_padding=&#8221;1px||||false|false&#8221; custom_padding=&#8221;76px||||false|false&#8221; header_text_shadow_style=&#8221;preset3&#8243; global_colors_info=&#8221;{}&#8221; sticky_transition=&#8221;on&#8221;]<\/p>\n<h2\/>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>[\/et_pb_slide][\/et_pb_slider][\/et_pb_column][et_pb_column type=&#8221;3_4&#8243; specialty_columns=&#8221;3&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_row_inner _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;3676f7e6-7b83-4698-94ce-2cc9fa9ae43d&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column_inner saved_specialty_column_type=&#8221;3_4&#8243; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; text_line_height=&#8221;1.9em&#8221; header_2_line_height=&#8221;1.3em&#8221; hover_enabled=&#8221;0&#8243; global_colors_info=&#8221;{}&#8221; sticky_enabled=&#8221;0&#8243;]<\/p>\n<h2 style=\"text-align: center;\"><strong>Drilling Methods and Techniques for Installing<\/strong><br \/><strong>CMT Wells in Unconsolidated Aquifers<\/strong><\/h2>\n<p>[\/et_pb_text][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;3676f7e6-7b83-4698-94ce-2cc9fa9ae43d&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column_inner saved_specialty_column_type=&#8221;3_4&#8243; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][dvmd_table_maker tbl_top_left_mode=&#8221;on&#8221; tbl_responsive_break_by=&#8221;row&#8221; tbl_chead_cell_color=&#8221;rgba(10,10,10,0.59)&#8221; tbl_chead_text_wrap=&#8221;normal&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; tbl_chead_text_text_color=&#8221;#FFFFFF&#8221; tbl_chead_text_font_size=&#8221;18px&#8221; custom_button=&#8221;on&#8221; button_text_size=&#8221;17px&#8221; button_text_color=&#8221;#FFFFFF&#8221; button_bg_color=&#8221;#ed8b00&#8243; button_border_width=&#8221;0px&#8221; button_border_radius=&#8221;5px&#8221; button_letter_spacing=&#8221;0px&#8221; button_font=&#8221;|600||on|||||&#8221; global_colors_info=&#8221;{}&#8221;][dvmd_table_maker_item col_content=&#8221;Drilling Method<br \/>\nSonic<br \/>\nHollow stem auger (HSA)<br \/>\nDirect-Push (DP)<br \/>\nAir rotary with casing advance<br \/>\nMud rotary&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; col_tcell_text_font=&#8221;||||||||&#8221; col_tcell_text_font_size=&#8221;16px&#8221; col_chead_text_font=&#8221;|700|||||||&#8221; global_colors_info=&#8221;{}&#8221;][\/dvmd_table_maker_item][dvmd_table_maker_item col_content=&#8221;Advantages<br \/>\nAdvancing casing during drilling minimizes redistribution of contaminants in borehole. Steel casing prevents borehole from collapsing as CMT well is being built. Vibrating casing during removal reduces likelihood of bridging annular materials.<br \/>\nRigs widely available. Augers provide temporary casing that can be withdrawn as CMT well is constructed.<br \/>\nRigs are widely available.<br \/>\nCasing prevents borehole from collapsing as CMT well is being built. Consistent-diameter borehole. Prevents redistribution of contaminants along borehole wall during drilling.<br \/>\nWidely available.&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; col_tcell_text_font=&#8221;||||||||&#8221; col_tcell_text_font_size=&#8221;16px&#8221; col_chead_text_font=&#8221;|700|||||||&#8221; global_colors_info=&#8221;{}&#8221;][\/dvmd_table_maker_item][dvmd_table_maker_item col_content=&#8221;Preferred CMT Installation Technique<br \/>\nPlace CMT tubing into casing with anchor plate attached to bottom of tubing. Use tubing centralizers to center tubing inside of sonic casing. Add alternating lifts of sand and bentonite pellets* as casing is withdrawn, either by gravity placement, tremie methods.<br \/>\nPlace CMT tubing with anchor plate into borehole inside of hollow stem augers. Add alternating lifts of bentonite pellets and sand pack from surface as augers are removed. CMT tubing centralizers may be needed to keep annular space open during well construction.<br \/>\nInsert CMT tubing into DP casing, then withdraw casing.<br \/>\nPlace CMT tubing into casing with anchor plate. CMT tubing centralizers should be used to center tubing in borehole. Add alternating lifts of sand and bentonite pellets* as casing is withdrawn, either by gravity placement, tremie methods.<br \/>\nPlace CMT tubing directly into borehole with anchor plate attached to bottom of tubing. CMT tubing centralizers should be used to center CMT tubing in borehole. Place sand pack and bentonite with a tremie tube and grout pump.&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; col_tcell_text_font=&#8221;||||||||&#8221; col_tcell_text_font_size=&#8221;16px&#8221; col_chead_text_font=&#8221;|700|||||||&#8221; global_colors_info=&#8221;{}&#8221;][\/dvmd_table_maker_item][dvmd_table_maker_item col_content=&#8221;Comments<br \/>\nDepths up to 300 feet. Use casing with an inside diameter (ID) of at least 4 inches. Addition of water to casing may be needed to prevent heaving as casing removed.<br \/>\nGenerally limited to depths of approximately 100 feet. Water may need to be added to augers to counteract heaving sand conditions. Use augers with at least a 4-inch internal diameter (ID).<br \/>\nBest for shallow installations where sand collapses around CMT tubing. May be difficult to tremie sand and bentonite due to small annular space between CMT tubing and DP casing.<br \/>\nSelect casing with at least a 4-inch ID. Addition of water commonly needed to prevent heaving as casing removed.<br \/>\nThin drilling fluid as much as possible prior to installing annular materials. Use a coarse-grained filter pack. Mud filter cake can be difficult to remove with development methods available for CMT wells.&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; col_tcell_text_font=&#8221;||||||||&#8221; col_tcell_text_font_size=&#8221;16px&#8221; col_chead_text_font=&#8221;|700|||||||&#8221; global_colors_info=&#8221;{}&#8221;][\/dvmd_table_maker_item][\/dvmd_table_maker][et_pb_text _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><span>* Coated bentonite pellets do not hydrate as quickly; therefore, these pellets are useful for deeper applications. However, some coated pellets give off either ethanol or acetone, and can cause elevated detection limits of some target compounds. 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