{"id":6768,"date":"2018-01-27T00:19:30","date_gmt":"2018-01-26T16:19:30","guid":{"rendered":"https:\/\/www.envguide.com\/groundwater-monitoring-well-design-2\/"},"modified":"2018-01-27T00:19:30","modified_gmt":"2018-01-26T16:19:30","slug":"groundwater-monitoring-well-design-2","status":"publish","type":"post","link":"https:\/\/www.envguide.com\/groundwater-monitoring-well-design-2\/","title":{"rendered":"Groundwater monitoring well design"},"content":{"rendered":"

\"Environmental<\/p>\n

The requirements to design the environmental monitoring well.<\/em><\/p>\n

Environmental monitoring well design<\/strong><\/p>\n

The main purpose of groundwater monitoring wells is to obtain representative groundwater data, which may include groundwater level, hydraulic conductivity, and groundwater sample analysis data. There are some common errors with the well installation and design for groundwater monitoring wells that may lead to obtain non-representative data. These issues may include the following:<\/p>\n

\u2022\tUse of erroneous construction materials leads to changes in sample chemicals;
\n\u2022\tUse of the wrong size of the screen or filter material results in excessive precipitation in the sample;
\n\u2022\tWell screen is installed at the wrong depth so that a representative sample can not be obtained;
\n\u2022\twrong filter or well material is selected, resulting in excessive sedimentation to clog the screen sieving, and changes in the chemical properties of the sample;
\n\u2022\tThe surface seal failure that allows the surface runoff to enter the ground, affecting the representation of the sample.\n<\/p>\n

Therefore, the monitoring well design process needs to meet the following requirements, 1) well with sufficient strength to withstand tension induced by construction process; 2) well not adsorb, desorption, leach out any chemical composition to change the water quality; not cause pollution of groundwater; 4) easy to use and cleaning; 5) cost-effective. To this end, the American Society for Testing and Materials (ASTM) Standard D5092 – Design and Installation of Groundwater Monitoring Wells provides guidelines for monitoring technical specifications and guidelines for monitoring wells.<\/p>\n

Proper design and installation also require sufficient study on site geological, chemical, microbial and other environmental data. These knowledge can be obtained through the site characterization. The keys to be considered include: 1) the purpose of groundwater monitoring program 2) surface conditions; 3) hydrogeological conditions; 4) groundwater chemistry and background microbiological condition; 5) contaminant properties; 6) human activities impact; and 7) any applicable regulatory requirements.<\/p>\n

In order to obtain the above information, the relevant literature and history of the site shall be evaluated. Detailed data can be obtained through site characterization activities, including the to obtain the \u3001\u3001 and so on.<\/p>\n

Common monitoring well design\uff1a<\/strong><\/p>\n

1.Single well screen and well casing\uff1a<\/p>\n

\"Single

Single well screen and well casing<\/p><\/div>\n

2.Multi well casing and single screen\uff1a<\/p>\n

\"Multi

Multi well casing and single screen<\/p><\/div>\n

3.Bedrock monitoring well\uff1a<\/p>\n

\"Bedrock

Bedrock monitoring well<\/p><\/div>\n

\"Bedrock

Bedrock monitoring well<\/p><\/div>\n

4.Well cluster:<\/p>\n

\"Well

Well cluster<\/p><\/div>\n

\"Well

Well cluster<\/p><\/div>\n

5.Well nest<\/p>\n

\"Well

Well nest<\/p><\/div>\n

\"

Well nest<\/p><\/div>\n

6.Multi-level monitoring well<\/p>\n

\"Multi-level

Multi-level monitoring well<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

The requirements to design the environmental monitoring … \u7ee7\u7eed\u9605\u8bfb<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[125],"tags":[],"acf":[],"yoast_head":"\nGroundwater monitoring well design • EnvGuide<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.envguide.com\/groundwater-monitoring-well-design-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Groundwater monitoring well design • EnvGuide\" \/>\n<meta property=\"og:description\" content=\"The requirements to 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