{"id":729,"date":"2026-02-02T19:34:57","date_gmt":"2026-02-02T19:34:57","guid":{"rendered":"https:\/\/gaeatech.com\/wordpress\/?p=729"},"modified":"2026-03-28T03:17:20","modified_gmt":"2026-03-28T03:17:20","slug":"types-of-monitoring-well-protective-casings","status":"publish","type":"post","link":"https:\/\/gaeatech.com\/knowledge-center\/types-of-monitoring-well-protective-casings\/","title":{"rendered":"Types of Protective Casings used for Monitoring Wells"},"content":{"rendered":"\n<p>Protective casings for monitoring wells, also known as surface completions, ensure the integrity of the well by preventing physical damage and unauthorized access.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-types-of-protective-casings\"><strong>Types of Protective Casings<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Above-Ground (Stick-Up) Casings<\/strong>: These consist of a steel pipe (round or square) installed over the well casing and extending approximately 2 to 3 feet above the ground. They typically feature a lockable, hinged, or weather-tight cap to prevent tampering and rain intrusion.<\/li>\n\n\n\n<li><strong>Flush-Mount Casings (Manholes)<\/strong>: Used in high-traffic areas (e.g., roads, parking lots) where an above-ground extension is impractical. These consist of a heavy-duty cast iron or composite cover set flush with the ground inside a protective skirt.<\/li>\n\n\n\n<li><strong>Steel Bollards<\/strong>: While not a casing itself, three 5-inch diameter steel posts are often installed around a stick-up well for additional impact protection.<\/li>\n\n\n\n<li><strong>Well Seals and Caps<\/strong>: These provide a secondary layer of protection by sealing the internal PVC casing directly with a watertight or vermin-proof lid.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-1-above-ground-stick-up-protective-casing\"><strong><br>1. Above-Ground (Stick-Up) Protective Casing<\/strong><\/h4>\n\n\n\n<p>Standard installations for non-traffic areas require a durable steel outer shell to prevent physical damage and tampering.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Dimensions<\/strong>: The protective steel casing should be approximately&nbsp;<strong>1.5 metres (5 feet)<\/strong>&nbsp;in total length, with about&nbsp;<strong>0.75 metres (2.5 feet)<\/strong>&nbsp;installed below the ground surface into the borehole.<\/li>\n\n\n\n<li><strong>Casing Height<\/strong>: The top must extend at least&nbsp;<strong>40 cm (16 inches)<\/strong>&nbsp;above the highest point of the ground surface within a 3-metre radius.<\/li>\n\n\n\n<li><strong>Material<\/strong>: Typically&nbsp;<strong>141 mm (approx. 5.5 inches)<\/strong>&nbsp;diameter steel pipe with a lockable cover.<\/li>\n\n\n\n<li><strong>Surface Completion<\/strong>: A concrete pad or surface mound (compacted soil, clay, or bentonite) must be constructed around the casing to direct surface water away from the well.<\/li>\n\n\n\n<li><strong>Venting<\/strong>: A small vent hole or slot should be cut below the bottom of the internal PVC cap to allow for air movement and proper water level fluctuation.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-2-flush-mount-manhole-protective-casing-nbsp\"><strong>2. Flush-Mount (Manhole) Protective Casing<\/strong>&nbsp;<\/h4>\n\n\n\n<p>Required in high-traffic areas like parking lots or roads where an above-ground extension would be a hazard.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Construction<\/strong>: Consists of a&nbsp;<strong>watertight, commercially manufactured cover<\/strong>&nbsp;set flush with the ground.<\/li>\n\n\n\n<li><strong>Vault Requirements<\/strong>: If a well pit (vault) is used, the top of the internal well casing must still be at least&nbsp;<strong>40 cm (16 inches)<\/strong>&nbsp;above the floor of the pit to prevent internal flooding from impacting the well.<\/li>\n\n\n\n<li><strong>Load Rating<\/strong>: For vehicular areas, casings must meet&nbsp;<strong>H-20 traffic loading<\/strong>&nbsp;standards to support the weight of heavy trucks.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-3-internal-well-casing-riser-specs\"><strong>3. Internal Well Casing (Riser) Specs<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Diameter<\/strong>: Standard permanent wells typically use a minimum&nbsp;<strong>50 mm (2-inch)<\/strong>&nbsp;ID casing, though 1-inch &#8220;microwells&#8221; are used for specific direct-push applications.<\/li>\n\n\n\n<li><strong>Materials<\/strong>: Most commonly&nbsp;<strong>Schedule 40 PVC<\/strong>&nbsp;with threaded, watertight joints. No glues or solvents are permitted as they contaminate water samples.<\/li>\n\n\n\n<li><strong>Annular Space<\/strong>: The borehole must be at least&nbsp;<strong>102 mm (4 inches)<\/strong>&nbsp;larger than the outside diameter of the casing to allow for proper filter pack and seal placement (e.g., a 2-inch casing requires a 6-inch borehole).&nbsp;<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-a89b3969 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/www.gaeatech.com\/winlog.php\" style=\"color:#fefafa;background-color:#5e87be\">Learn more about our Boring and Well Log Solutions<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-related-articles\">Related Articles<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/gaeatech.com\/knowledge-center\/the-complete-guide-to-drilling-and-sampling-for-environmental-and-geotechnical-investigations\/\">The Complete Guide to Drilling and Sampling for Environmental and Geotechnical Investigations<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/gaeatech.com\/knowledge-center\/health-safety-plan-hasp-investigations\/\">Crafting an Effective Health &amp; Safety Plan (HASP)<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/gaeatech.com\/knowledge-center\/emergency-response-plan-drilling\/\">Crafting an Effective Emergency Response Plan for Environmental and Geotechnical Drilling<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/gaeatech.com\/knowledge-center\/job-site-safety-checklist-geotechnical-drilling\/\">Essential Job-Site Safety Checklist for Geotechnical and Environmental Drilling<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/gaeatech.com\/knowledge-center\/essential-steps-safe-drilling-urban-areas\/\">Essential Steps to Ensure Safe Drilling: Utility Clearances 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href=\"https:\/\/gaeatech.com\/knowledge-center\/selecting-monitoring-well-filter-grout-materials\/\">Choosing the Best Filter and Grout Materials for a Monitoring Well<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/gaeatech.com\/knowledge-center\/monitoring-well-screen-riser-material\/\">Choosing the Best Screen and Riser Pipe Materials for Monitoring Wells<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/gaeatech.com\/knowledge-center\/groundwater-monitoring-well-purging-sampling-procedures\/\">Standard Operating Procedures for Purging and Sampling Groundwater Monitoring Wells<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Protective casings for monitoring wells, also known as surface completions, ensure the integrity of the well by preventing physical damage and unauthorized access. Types of Protective Casings 1. Above-Ground (Stick-Up) Protective Casing Standard installations for non-traffic areas require a durable steel outer shell to prevent physical damage and tampering.&nbsp; 2. Flush-Mount (Manhole) Protective Casing&nbsp; Required [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":708,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[792,256],"tags":[388,391,387,389,392,390],"class_list":["post-729","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-borehole-data-management","category-drilling-and-sampling","tag-flush-mount-well-manhole","tag-groundwater-monitoring-security","tag-monitoring-well-casing","tag-protective-well-cover","tag-steel-well-casing","tag-stick-up-well-protector"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Types of Protective Casings used for Monitoring Wells - Knowledge Center<\/title>\n<meta name=\"description\" content=\"Explore the different types of protective casings for monitoring wells, including stick-up protectors and flush-mount manholes. Learn about materials, security features, and installation requirements to ensure groundwater well integrity\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gaeatech.com\/knowledge-center\/types-of-monitoring-well-protective-casings\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Types of Protective Casings used for Monitoring Wells\" \/>\n<meta property=\"og:description\" content=\"Explore the different types of protective casings for monitoring wells, including stick-up protectors and flush-mount manholes. 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