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The Channel 1 identifier is a low-profile repetitive marking << CMT >><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
[\/et_pb_text][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n
Step 4) Mark Monitoring Port 1<\/h2>\n
Make a mark across Channel 1 on the exterior of the CMT tubing at the depth corresponding to the centre of the uppermost monitored port (Figure 3, which is 23 feet below ground surface in our hypothetical example in Table 1). A permanent marker or a \u2018China marker\u2019 wax pencil works well for this. Write \u2018Port 1\u2019 on the CMT tubing about 6 inches above the mark. <\/p>\n
[\/et_pb_text][et_pb_text _builder_version=”4.27.4″ _module_preset=”e910b435-fe18-45d2-b351-bda808b1a267″ hover_enabled=”0″ border_width_all=”1px” border_color_all=”rgba(0,0,0,0.23)” global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n
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Note: <\/strong><\/h3>\n\n
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The channel identifier on the CMT tubing is intentionally subtle to avoid being a conduit for vertical leakage.<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n[\/et_pb_text][et_pb_image src=”https:\/\/www.solinst.com\/wp-content\/uploads\/2024\/11\/403n-mark-monitoring-port.webp” alt=”Figure 3: Marking the 3-channel CMT multi-channel tubing sampling zone” title_text=”Figure 3 \u2013 Marking the 3-Channel CMT Multi-channel Tubing Sampling Zone” align=”center” _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n
Figure 3 \u2013 Marking the 3-Channel CMT Multi-channel Tubing Sampling Zone<\/em><\/p>\n[\/et_pb_text][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n
Step 5) Mark Port 1 for Port Cutting Guide<\/h2>\n
Next, draw a line along the Channel 1 << CMT >> identifier extending approximately 6″ above and 6″ below the depth mark (Figure 4). You will use this line (and other similar lines drawn at the other port depths) to index the Port Cutting Guide. This ensures that you cut holes only in the intended channels corresponding to the desired monitoring zones. <\/p>\n
[\/et_pb_text][et_pb_image src=”https:\/\/www.solinst.com\/wp-content\/uploads\/2024\/11\/403n-port-cutting-guide-2x.webp” alt=”Figure 4: Marking CMT 3-channel multi-channel tubing to cut out sampling ports” title_text=”Figure 4 \u2013 Marking CMT 3-Channel Multi-channel Tubing to cut out Sampling Ports” align=”center” _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n
Figure 4 \u2013 Marking CMT 3-Channel Multi-channel Tubing to cut out Sampling Ports<\/em><\/p>\n[\/et_pb_text][et_pb_text _builder_version=”4.27.4″ _module_preset=”e910b435-fe18-45d2-b351-bda808b1a267″ hover_enabled=”0″ border_width_all=”1px” border_color_all=”rgba(0,0,0,0.23)” global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n
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The next series of instructions use hand tools and materials that are sharp. Use proper protective equipment. Work safely. <\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n[\/et_pb_text][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n
Step 6) Mark all Ports and Cut Tubing at Deepest Port<\/h2>\n
The Port Cutting Guide has been indexed so that it always references the Channel 1 identifier when it is used to cut holes in the other two channels. Therefore, make similar marks at the depths corresponding to the next two monitoring zones (i.e. 34 and 48 feet below ground surface). Make the marks identical to the ones you drew at Port 1. That is, draw the depth mark across Channel 1 in the centre of the port and draw the longitudinal line along the Channel 1 << CMT >> identifier. Label these depth marks as Port 2 and Port 3, respectively, about 6 inches above each mark. Finally, make a mark at the depth of the bottom of the well (at 49 ft, 1 ft below the deepest port in our example). Cut the CMT tubing at this mark using a hacksaw, sharp knife, or PVC cutter (Figure 5). <\/p>\n
[\/et_pb_text][et_pb_image src=”https:\/\/www.solinst.com\/wp-content\/uploads\/2024\/11\/fig5-cutting-narrow-cmt-tubing.webp” alt=”Figure 5: Cutting 3-channel narrow-diameter CMT multi-level system tubing” title_text=”Figure 5 \u2013 Cutting 3-Channel Narrow-Diameter CMT Multi-level System Tubing” align=”center” _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n
Figure 5 \u2013 Cutting 3-Channel Narrow-Diameter CMT Multi-level System Tubing<\/em><\/p>\n[\/et_pb_text][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n
Step 7) Complete Design<\/h2>\n
The design of the well has now been transferred to the CMT tubing.<\/p>\n
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