{"id":12620,"date":"2025-05-14T10:09:23","date_gmt":"2025-05-14T10:09:23","guid":{"rendered":"https:\/\/www.codel.co.uk\/?p=12620"},"modified":"2025-05-22T07:53:22","modified_gmt":"2025-05-22T07:53:22","slug":"case-study-codels-pm-monitor-in-road-tunnel","status":"publish","type":"post","link":"https:\/\/www.codel.co.uk\/ru\/case-study-codels-pm-monitor-in-road-tunnel\/","title":{"rendered":"Case Study: CODEL&#8217;s PM Monitor in Road Tunnel"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"12620\" class=\"elementor elementor-12620\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-fb1626a elementor-section-stretched elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fb1626a\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;stretch_section&quot;:&quot;section-stretched&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-cd3361b\" data-id=\"cd3361b\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-521c00c elementor-widget elementor-widget-image\" data-id=\"521c00c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"300\" height=\"169\" src=\"https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/CODEL_A_Forbes_company_white-300x169.png\" class=\"attachment-medium size-medium wp-image-12605\" alt=\"\" srcset=\"https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/CODEL_A_Forbes_company_white-300x169.png 300w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/CODEL_A_Forbes_company_white-1024x576.png 1024w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/CODEL_A_Forbes_company_white-768x432.png 768w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/CODEL_A_Forbes_company_white-1536x864.png 1536w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/CODEL_A_Forbes_company_white-18x10.png 18w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/CODEL_A_Forbes_company_white.png 1920w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b4a60a5 elementor-widget elementor-widget-heading\" data-id=\"b4a60a5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Policy and Mitigation \nRecommendations<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-777f3b2 elementor-widget elementor-widget-text-editor\" data-id=\"777f3b2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>To address PM pollution in tunnels, a multi-layered approach is needed:<\/p><ul><li><strong>Mandate PM1.0, PM2.5, and PM10 monitoring<\/strong> in tunnels.<\/li><\/ul><ul><li><strong>Enforce exposure limits<\/strong> for both occupational and public settings.<\/li><\/ul><ul><li><strong>Upgrade ventilation systems<\/strong> with high-efficiency particulate air (HEPA) filters.<\/li><\/ul><ul><li><strong>Promote low-emission zones<\/strong> within or around tunnel access points.<\/li><\/ul><ul><li><strong>Encourage mode shifts<\/strong> to electric vehicles and active transportation.<\/li><\/ul><ul><li><strong>Integrate tunnel air quality data<\/strong> into public health monitoring systems.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bef0b0f elementor-widget elementor-widget-heading\" data-id=\"bef0b0f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Case Study Highlights\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-351c57f elementor-widget elementor-widget-text-editor\" data-id=\"351c57f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>WHO Recommended PM 2.5 over 24Hrs<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-a1935ab elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a1935ab\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-e083755\" data-id=\"e083755\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-370adc5 elementor-widget elementor-widget-heading\" data-id=\"370adc5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">15ug\/m3<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-94df489 elementor-widget elementor-widget-text-editor\" data-id=\"94df489\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Max Measured PM2.5 over 24Hrs<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-e53c82d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e53c82d\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-202a56f\" data-id=\"202a56f\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-eabcf7a elementor-widget-mobile__width-initial elementor-widget elementor-widget-heading\" data-id=\"eabcf7a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">58ug\/m3<br>(CODEL)<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-e293d49\" data-id=\"e293d49\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-65f17e5 elementor-widget elementor-widget-heading\" data-id=\"65f17e5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">52ug\/m3<br>(TEOM)<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-5985f16 elementor-widget elementor-widget-text-editor\" data-id=\"5985f16\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>24-hour averages of PM2.5 indicate that the WHO 24-hour exposure limits for PM2.5 are frequently exceeded in this tunnel. The periods where exposure limits are not exceeded are during the weekends when truck traffic in the tunnel is significantly reduced.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-26736b8 elementor-widget elementor-widget-text-editor\" data-id=\"26736b8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>WHO Recommended PM 10 over 24Hrs<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-7eb5747 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7eb5747\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-b155a86\" data-id=\"b155a86\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9dcd0aa elementor-widget elementor-widget-heading\" data-id=\"9dcd0aa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">45ug\/m3<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ef59c6 elementor-widget elementor-widget-text-editor\" data-id=\"2ef59c6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Max Measured PM2.5 over 24Hrs<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-d118c43 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d118c43\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-58c1b7b\" data-id=\"58c1b7b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ae46084 elementor-widget elementor-widget-heading\" data-id=\"ae46084\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">103ug\/m3<br>(CODEL)<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-41f3b36\" data-id=\"41f3b36\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a057c89 elementor-widget elementor-widget-heading\" data-id=\"a057c89\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">130ug\/m3<br>(TEOM)<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-ff5dd33 elementor-widget elementor-widget-text-editor\" data-id=\"ff5dd33\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>24-hour averages of PM10 indicate that the WHO 24-hour exposure limits for PM10 are frequently exceeded in this tunnel. The periods where exposure limits are not exceeded are during the weekends when truck traffic in the tunnel is significantly reduced.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-8d3ece7\" data-id=\"8d3ece7\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6da8bdb elementor-widget elementor-widget-spacer\" data-id=\"6da8bdb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-14c049e elementor-widget elementor-widget-heading\" data-id=\"14c049e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">CODEL Case Study<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-12125e6 elementor-widget elementor-widget-text-editor\" data-id=\"12125e6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Location:<\/strong> French Alps Road Tunnel<br \/><strong>Install Date:<\/strong> 21st September 2023 <br \/><strong>Tunnel Length:<\/strong> 12.87km<br \/><strong>Monitoring Duration:<\/strong> 5 Weeks<br \/><strong>Reference Monitor:<\/strong> Tapered Element Oscillating Microbalance (TEOM)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-63a0f37 elementor-widget elementor-widget-text-editor\" data-id=\"63a0f37\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The test was conducted from September 21 to October 19, 2023. During this period, the TEOM analyser was calibrated three times &#8211; on September 26, October 3, and October 10. It measured PM2.5 from September 21 to October 10, then switched to PM10 sampling. <strong>The CODEL TT PM device was not calibrated or maintained during the trial.<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e7781c9 elementor-widget elementor-widget-heading\" data-id=\"e7781c9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h5 class=\"elementor-heading-title elementor-size-default\">PM 2.5 Results<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c283042 elementor-widget elementor-widget-image\" data-id=\"c283042\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"900\" height=\"425\" src=\"https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/PM-2.5-SS-2-1024x484.png\" class=\"attachment-large size-large wp-image-12649\" alt=\"\" srcset=\"https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/PM-2.5-SS-2-1024x484.png 1024w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/PM-2.5-SS-2-300x142.png 300w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/PM-2.5-SS-2-768x363.png 768w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/PM-2.5-SS-2-18x9.png 18w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/PM-2.5-SS-2.png 1044w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c46e191 elementor-widget elementor-widget-image\" data-id=\"c46e191\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"900\" height=\"370\" src=\"https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/24H-2.5-SS-1024x421.png\" class=\"attachment-large size-large wp-image-12623\" alt=\"\" srcset=\"https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/24H-2.5-SS-1024x421.png 1024w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/24H-2.5-SS-300x123.png 300w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/24H-2.5-SS-768x316.png 768w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/24H-2.5-SS-18x7.png 18w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/24H-2.5-SS.png 1044w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3582bf5 elementor-widget elementor-widget-heading\" data-id=\"3582bf5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h5 class=\"elementor-heading-title elementor-size-default\">PM10 Results<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8db467a elementor-widget elementor-widget-image\" data-id=\"8db467a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"421\" src=\"https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/pm-10-ss-1024x479.png\" class=\"attachment-large size-large wp-image-12624\" alt=\"\" srcset=\"https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/pm-10-ss-1024x479.png 1024w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/pm-10-ss-300x140.png 300w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/pm-10-ss-768x359.png 768w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/pm-10-ss-18x8.png 18w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/pm-10-ss.png 1064w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c65d589 elementor-widget elementor-widget-image\" data-id=\"c65d589\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"349\" src=\"https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/24h-pm-10-ss-1024x397.png\" class=\"attachment-large size-large wp-image-12625\" alt=\"\" srcset=\"https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/24h-pm-10-ss-1024x397.png 1024w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/24h-pm-10-ss-300x116.png 300w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/24h-pm-10-ss-768x298.png 768w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/24h-pm-10-ss-18x7.png 18w, https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/24h-pm-10-ss.png 1052w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f462944 elementor-widget elementor-widget-spacer\" data-id=\"f462944\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3748d66 elementor-widget elementor-widget-spacer\" data-id=\"3748d66\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Policy and Mitigation Recommendations To address PM pollution in tunnels, a multi-layered approach is needed: Mandate PM1.0, PM2.5, and PM10 monitoring in tunnels. Enforce exposure limits for both occupational and public settings. Upgrade ventilation systems with high-efficiency particulate air (HEPA) filters. Promote low-emission zones within or around tunnel access points. Encourage mode shifts to electric &#8230; <a title=\"Case Study: CODEL&#8217;s PM Monitor in Road Tunnel\" class=\"read-more\" href=\"https:\/\/www.codel.co.uk\/ru\/case-study-codels-pm-monitor-in-road-tunnel\/\" aria-label=\"Read more about Case Study: CODEL&#8217;s PM Monitor in Road Tunnel\">\u0427\u0438\u0442\u0430\u0442\u044c \u0434\u0430\u043b\u0435\u0435<\/a><\/p>","protected":false},"author":6,"featured_media":12633,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[35],"class_list":["post-12620","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-case-study"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.7 (Yoast SEO v28.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Case Study: CODEL&#039;s PM Monitor in Road Tunnel - CODEL International LTD<\/title>\n<meta name=\"description\" content=\"Explore how CODEL\u2019s PM Monitor enhanced air quality monitoring and operational efficiency in a busy road tunnel environment.\" \/>\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.codel.co.uk\/ru\/case-study-codels-pm-monitor-in-road-tunnel\/\" \/>\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Case Study: CODEL&#039;s PM Monitor in Road Tunnel\" \/>\n<meta property=\"og:description\" content=\"Explore how CODEL\u2019s PM Monitor enhanced air quality monitoring and operational efficiency in a busy road tunnel environment.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.codel.co.uk\/ru\/case-study-codels-pm-monitor-in-road-tunnel\/\" \/>\n<meta property=\"og:site_name\" content=\"CODEL International LTD\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-14T10:09:23+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-05-22T07:53:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.codel.co.uk\/wp-content\/uploads\/2025\/05\/Copy-of-TT-Blog-Thumbnail-7.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"628\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Sam Pursglove\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u041d\u0430\u043f\u0438\u0441\u0430\u043d\u043e \u0430\u0432\u0442\u043e\u0440\u043e\u043c\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sam Pursglove\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u041f\u0440\u0438\u043c\u0435\u0440\u043d\u043e\u0435 \u0432\u0440\u0435\u043c\u044f \u0434\u043b\u044f \u0447\u0442\u0435\u043d\u0438\u044f\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 \u043c\u0438\u043d\u0443\u0442\u044b\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.codel.co.uk\\\/case-study-codels-pm-monitor-in-road-tunnel\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.codel.co.uk\\\/case-study-codels-pm-monitor-in-road-tunnel\\\/\"},\"author\":{\"name\":\"Sam Pursglove\",\"@id\":\"https:\\\/\\\/www.codel.co.uk\\\/#\\\/schema\\\/person\\\/9731c5f8fdb96d405bf68916db9a62ef\"},\"headline\":\"Case Study: CODEL&#8217;s PM Monitor in Road Tunnel\",\"datePublished\":\"2025-05-14T10:09:23+00:00\",\"dateModified\":\"2025-05-22T07:53:22+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.codel.co.uk\\\/case-study-codels-pm-monitor-in-road-tunnel\\\/\"},\"wordCount\":275,\"publisher\":{\"@id\":\"https:\\\/\\\/www.codel.co.uk\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.codel.co.uk\\\/case-study-codels-pm-monitor-in-road-tunnel\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.codel.co.uk\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/Copy-of-TT-Blog-Thumbnail-7.jpg\",\"keywords\":[\"Case Study\"],\"articleSection\":[\"Uncategorized\"],\"inLanguage\":\"ru-RU\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.codel.co.uk\\\/case-study-codels-pm-monitor-in-road-tunnel\\\/\",\"url\":\"https:\\\/\\\/www.codel.co.uk\\\/case-study-codels-pm-monitor-in-road-tunnel\\\/\",\"name\":\"Case Study: CODEL's PM Monitor in Road Tunnel - 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