{"id":5273,"date":"2023-07-03T16:10:10","date_gmt":"2023-07-03T08:10:10","guid":{"rendered":"http:\/\/localhost\/virsopv2\/?page_id=5273"},"modified":"2023-07-05T16:36:00","modified_gmt":"2023-07-05T08:36:00","slug":"site-preparation-mechanical-1-0-river-stone-site-mining","status":"publish","type":"page","link":"https:\/\/epd.sabah.gov.my\/virsopv2\/division-site-preparation\/site-preparation\/site-preparation-mechanical-1-0-river-stone-site-mining\/","title":{"rendered":"\u00a0Site Preparation: Mechanical &#8211; 1.0 River Stone &#038; Site Mining"},"content":{"rendered":"\n\t<section class=\"section\" id=\"section_818611585\">\n\t\t<div class=\"bg section-bg fill bg-fill bg-loaded bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"row align-right\"  id=\"row-1595464057\">\n\n\n\t<div id=\"col-1853821660\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<p style=\"text-align: right;\">\t\t\t<!-- Flexy Breadcrumb -->\r\n\t\t\t<div class=\"fbc fbc-page\">\r\n\r\n\t\t\t\t<!-- Breadcrumb wrapper -->\r\n\t\t\t\t<div class=\"fbc-wrap\">\r\n\r\n\t\t\t\t\t<!-- Ordered list-->\r\n\t\t\t\t\t<ol class=\"fbc-items\" itemscope itemtype=\"https:\/\/schema.org\/BreadcrumbList\">\r\n\t\t\t\t\t\t            <li itemprop=\"itemListElement\" itemscope itemtype=\"https:\/\/schema.org\/ListItem\">\r\n                <span itemprop=\"name\">\r\n                    <!-- Home Link -->\r\n                    <a itemprop=\"item\" href=\"https:\/\/epd.sabah.gov.my\/virsopv2\/\">\r\n                    \r\n                                                    <i class=\"fa fa-home\" aria-hidden=\"true\"><\/i>                    <\/a>\r\n                <\/span>\r\n                <meta itemprop=\"position\" content=\"1\" \/><!-- Meta Position-->\r\n             <\/li><li><span class=\"fbc-separator\">\/<\/span><\/li><li class=\"active\" itemprop=\"itemListElement\" itemscope itemtype=\"https:\/\/schema.org\/ListItem\"><span itemprop=\"name\" title=\"\u00a0Site Preparation: Mechanical &#8211; 1.0 River Stone &#038; Site Mining\">\u00a0Site Preparation: Mechanical &#8211; 1.0 River Stone &#038; Site Mining<\/span><meta itemprop=\"position\" content=\"2\" \/><\/li>\t\t\t\t\t<\/ol>\r\n\t\t\t\t\t<div class=\"clearfix\"><\/div>\r\n\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t\t\n\n\t\t<\/div>\n\t\t\t\t\n<style>\n#col-1853821660 > .col-inner {\n  padding: 0px 11px 0px 0px;\n}\n<\/style>\n\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_818611585 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n#section_818611585 .ux-shape-divider--top svg {\n  height: 150px;\n  --divider-top-width: 100%;\n}\n#section_818611585 .ux-shape-divider--bottom svg {\n  height: 150px;\n  --divider-width: 100%;\n}\n<\/style>\n\t<\/section>\n\t\n\t<section class=\"section\" id=\"section_979959623\">\n\t\t<div class=\"bg section-bg fill bg-fill bg-loaded bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<h1 class=\"uppercase\" style=\"text-align: center;\"><span style=\"font-size: 120%; color: #416a59;\">CONTROL OF river stone &amp; site management<\/span><\/h1>\n<p>&nbsp;<\/p>\n<p><strong>Uncontrolled mining of river stone and sand activities results in channel erosion of the riverbank at the extraction area causing changes in river morphology at the upstream and downstream as well as sedimentation towards the downstream river stretch.<\/strong><\/p>\n<div class=\"row\"  id=\"row-1331359837\">\n\n\n\t<div id=\"col-1905462298\" class=\"col medium-2 small-12 large-2\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<h3>Target:<\/h3>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1683386009\" class=\"col medium-10 small-12 large-10\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<p>River stone and sand mining activities within the approved allowable mining area.<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n<div class=\"row\"  id=\"row-1349207951\">\n\n\n\t<div id=\"col-258782222\" class=\"col sop_div medium-2 small-12 large-2\"  >\n\t\t\t\t<div class=\"col-inner text-left\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-2164425314\" class=\"text\">\n\t\t\n\n<h3>Standard Operating Procedures<\/h3>\n\t\t\n<style>\n#text-2164425314 {\n  font-size: 1.2rem;\n}\n<\/style>\n\t<\/div>\n\t\n<a class=\"button primary is-small expand expand_all_btn\"  >\n  <i class=\"icon-expand\" ><\/i>  <span>Expand All<\/span>\n  <\/a>\n\n\n\n\t\t<\/div>\n\t\t\t\t\n<style>\n#col-258782222 > .col-inner {\n  margin: 0px 0px -20px 0px;\n}\n<\/style>\n\t<\/div>\n\n\t\n\n\t<div id=\"col-1235391368\" class=\"col medium-10 small-12 large-10\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<div class=\"accordion\" rel=\"\">\n\n<div class=\"accordion-item\"><a href=\"#\" class=\"accordion-title plain\"><button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\"><\/i><\/button><span>1.1 Submission of Survey Plan<\/span><\/a><div class=\"accordion-inner\">\n\n\t<div id=\"text-1545236139\" class=\"text t-justify\">\n\t\t\n\n<p><strong>1.1.1 <\/strong>Obtain certification from the sabah lands and surveys department on the boundary survey plan and submit to EPD together with TOL approval letter before the commencement of the mining activity.<\/p>\n\t\t\n<style>\n#text-1545236139 {\n  font-size: 1rem;\n}\n<\/style>\n\t<\/div>\n\t\n\n<\/div><\/div>\n<div class=\"accordion-item\"><a href=\"#\" class=\"accordion-title plain\"><button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\"><\/i><\/button><span>1.2 Marking of the Minerable Area<\/span><\/a><div class=\"accordion-inner\">\n\n\t<div id=\"text-2798594620\" class=\"text t-justify\">\n\t\t\n\n<p><strong>1.2.1 <\/strong>Appoint a licensed surveyor to identify the location of markers for the mineable area based on the approved figure in the AEC.<\/p>\n<p><strong>1.2.2 <\/strong>Install easily visible markers to demarcate the mineable area before commencing mining activities examples of mineable area markers that can be used are:<\/p>\n\t\t\n<style>\n#text-2798594620 {\n  font-size: 1rem;\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"row\"  id=\"row-1787870127\">\n\n\n\t<div id=\"col-1306407151\" class=\"col sop_div medium-1 small-12 large-1\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"gap-2119989141\" class=\"gap-element clearfix hidden\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-2119989141 {\n  padding-top: 10px;\n}\n<\/style>\n\t<\/div>\n\t\n\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1917723045\" class=\"col medium-11 small-12 large-11\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-2722855520\" class=\"text t-justify\">\n\t\t\n\n<p><strong>(A)<\/strong> Flagpole with buoy<\/p>\n<p><strong>i) <\/strong>The illustrations of flagpole with buoy and sinker are shown in <strong>figures 1 and 2<\/strong> these markers are usually used in deep rivers.<\/p>\n\t\t\n<style>\n#text-2722855520 {\n  font-size: 0.95rem;\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"row\"  id=\"row-1811269887\">\n\n\n\t<div id=\"col-1286638386\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"box has-hover non_draggable  has-hover box-default box-text-bottom\" >\n\n\t\t<div class=\"box-image\" >\n\t\t\t\t\t\t<div class=\"\" >\n\t\t\t\t<img width=\"577\" height=\"484\" src=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/3-1.jpg\" class=\"attachment- size-\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/3-1.jpg 577w, https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/3-1-477x400.jpg 477w\" sizes=\"(max-width: 577px) 100vw, 577px\" \/>\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\t<div class=\"box-text text-center\" >\n\t\t\t<div class=\"box-text-inner\">\n\t\t\t\t\n\n\t<div id=\"text-3490443511\" class=\"text\">\n\t\t\n\n<p><strong>Figure 1: <\/strong> Illustration of flagpole with a buoy.<\/p>\n\t\t\n<style>\n#text-3490443511 {\n  font-size: 0.9rem;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1405797571\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"box has-hover   has-hover box-text-bottom\" >\n\n\t\t<div class=\"box-image\" style=\"width:84%;\">\n\t\t\t\t\t\t<div class=\"image-cover\" style=\"padding-top:110%;\">\n\t\t\t\t<img width=\"543\" height=\"630\" src=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/figure2.png\" class=\"attachment- size-\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/figure2.png 543w, https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/figure2-345x400.png 345w\" sizes=\"(max-width: 543px) 100vw, 543px\" \/>\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\t<div class=\"box-text text-center\" >\n\t\t\t<div class=\"box-text-inner\">\n\t\t\t\t\n\n\t<div id=\"text-467583563\" class=\"text\">\n\t\t\n\n<p><strong>Figure 2: <\/strong> Example of buoy with a sinker.<\/p>\n\t\t\n<style>\n#text-467583563 {\n  font-size: 0.9rem;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\t<div id=\"text-423449177\" class=\"text t-justify\">\n\t\t\n\n<p><strong>ii)<\/strong> Connect the buoy with the sinker by using a chain or rope with an extra 2 m added to the total length in order to keep the buoy at a specified radius on the surface.<\/p>\n<p><strong>iii)<\/strong> As an alternative method empty gallons that are free from chemicals\/oil residue can be used to replace the buoys.<\/p>\n\t\t\n<style>\n#text-423449177 {\n  font-size: 0.95rem;\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"text-center\"><div class=\"is-divider divider clearfix\" style=\"margin-top:1em;margin-bottom:1em;max-width:500px;height:5px;\"><\/div><\/div>\n\n\t<div id=\"text-1467154439\" class=\"text t-justify\">\n\t\t\n\n<p><strong>(B)<\/strong> Flagpole<\/p>\n<p><strong>i) <\/strong>Erect iron poles with flag in the river at depths that can withstand river currents these markers are usually used in shallow waters.<\/p>\n\t\t\n<style>\n#text-1467154439 {\n  font-size: 0.95rem;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\t<div class=\"box has-hover   has-hover box-text-bottom\" >\n\n\t\t<div class=\"box-image\" style=\"width:30%;\">\n\t\t\t\t\t\t<div class=\"\" >\n\t\t\t\t<img width=\"531\" height=\"708\" src=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/10.jpg\" class=\"attachment- size-\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/10.jpg 531w, https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/10-300x400.jpg 300w\" sizes=\"(max-width: 531px) 100vw, 531px\" \/>\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\t<div class=\"box-text text-center\" >\n\t\t\t<div class=\"box-text-inner\">\n\t\t\t\t\n\n\t<div id=\"text-3343498535\" class=\"text\">\n\t\t\n\n<p><strong>Plate 1: <\/strong>Flagpole used to mark the mineable area.<\/p>\n\t\t\n<style>\n#text-3343498535 {\n  font-size: 0.9rem;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"text-2621404845\" class=\"text t-justify\">\n\t\t\n\n<p><strong>1.2.3<\/strong> Consider river conditions when selecting marking tools used to mark the mineable area.<\/p>\n<p><strong>1.2.4<\/strong> Use bright colours for the mineable area markers and make the markers easily visible for example use red colour.<\/p>\n<p><strong>1.2.5<\/strong> Erect suitablysized signboards that are easily visible at the riverside to mark the starting (upstream) and ending (downstream) point of the mineable area or erect signboards at the location shown in the figure in the AEC the recommended size for signboards are 0.5 m x 1.0 m.<\/p>\n<p><strong>1.2.6 <\/strong>Signboards should state the following information:&nbsp;<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>\u201cMineable Area\u201d or \u201cKawasan Penggalian Batu\/Pasir Sungai&#8221;.<\/li>\n<li>Arrow pointing to the nearest mineable area marker (flagpoles with buoy).<\/li>\n<li>Distance between the signboard and the nearest mineable area marker.<\/li>\n<li>Coordinates.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>1.2.7 <\/strong>Install a warning signboard next to the mineable area signboard or erect a warning signboard at the location shown in the figure of the AEC to warn the public of mining activities.<\/p>\n\t\t\n<style>\n#text-2621404845 {\n  font-size: 0.95rem;\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"row\"  id=\"row-1854617862\">\n\n\n\t<div id=\"col-1545916992\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"box has-hover   has-hover box-text-bottom\" >\n\n\t\t<div class=\"box-image\" style=\"width:80%;\">\n\t\t\t\t\t\t<div class=\"\" >\n\t\t\t\t<img width=\"1080\" height=\"587\" src=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/11.jpg\" class=\"attachment- size-\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/11.jpg 1080w, https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/11-736x400.jpg 736w, https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/11-768x417.jpg 768w\" sizes=\"(max-width: 1080px) 100vw, 1080px\" \/>\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\t<div class=\"box-text text-center\" >\n\t\t\t<div class=\"box-text-inner\">\n\t\t\t\t\n\n\t<div id=\"text-3229585178\" class=\"text\">\n\t\t\n\n<p><strong>Figure<\/strong> <strong>3:<\/strong> Illustration showing the mineable area marking.<\/p>\n\t\t\n<style>\n#text-3229585178 {\n  font-size: 0.9rem;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-966233842\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"box has-hover   has-hover box-text-bottom\" >\n\n\t\t<div class=\"box-image\" style=\"width:30%;\">\n\t\t\t\t\t\t<div class=\"\" >\n\t\t\t\t<img width=\"487\" height=\"685\" src=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/12-1.jpg\" class=\"attachment- size-\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/12-1.jpg 487w, https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/12-1-284x400.jpg 284w\" sizes=\"(max-width: 487px) 100vw, 487px\" \/>\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\t<div class=\"box-text text-center\" >\n\t\t\t<div class=\"box-text-inner\">\n\t\t\t\t\n\n\t<div id=\"text-2339391565\" class=\"text\">\n\t\t\n\n<p><strong>Figure 4: <\/strong>Example of a warning signboard<\/p>\n\t\t\n<style>\n#text-2339391565 {\n  font-size: 0.9rem;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\t<div id=\"text-3554734979\" class=\"text t-justify\">\n\t\t\n\n<p><strong>1.2.8 <\/strong>Conduct patrolling activities to check the condition of the signboards and mineable area markers.<\/p>\n<p><strong>1.2.9 <\/strong>Replace or conduct necessary maintenance if the marking has been removed or damaged during floods.<\/p>\n<p><strong>1.2.10 <\/strong>Prohibit any river reclamation activities.<\/p>\n\t\t\n<style>\n#text-3554734979 {\n  font-size: 0.95rem;\n}\n<\/style>\n\t<\/div>\n\t\n\n<\/div><\/div>\n<div class=\"accordion-item\"><a href=\"#\" class=\"accordion-title plain\"><button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\"><\/i><\/button><span>1.3 Mining Area Accesibility<\/span><\/a><div class=\"accordion-inner\">\n\n\t<div id=\"text-1714505584\" class=\"text t-justify\">\n\t\t\n\n<p><strong>1.3.1 <\/strong>Refer to the EIA\/AEC for the location of the access point\/route to the mining area.<\/p>\n<p><strong>1.3.2 <\/strong>Conduct minimal clearing for the preparation of access point\/route. Access route width is based on the width of equipment use for mining.<\/p>\n<p><strong>1.3.3 <\/strong>Layer the access point\/route with aggregates to minimise erosion from runoff.<\/p>\n\t\t\n<style>\n#text-1714505584 {\n  font-size: 0.95rem;\n}\n<\/style>\n\t<\/div>\n\t\n\n<\/div><\/div>\n<div class=\"accordion-item\"><a href=\"#\" class=\"accordion-title plain\"><button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\"><\/i><\/button><span>1.4 Control Method for Mining Activity<\/span><\/a><div class=\"accordion-inner\">\n\n\t<div id=\"text-1879602414\" class=\"text t-justify\">\n\t\t\n\n<p><strong>1.4.1 <\/strong>Conduct river stone and sand mining activity based on the approved methods specified in EIA.<strong><br><\/strong><\/p>\n<p><strong>1.4.2 <\/strong>Conduct river stone and sand mining within the mineable zone only (middle third of the river within the approved TOL boundary or based on the environmental consultant assessment during the EIA stage along with the DID requirement) based on the AEC.<strong><br><\/strong><\/p>\n<p><strong>1.4.3 <\/strong>Stop river sand or stone mining operations during or after heavy rains to avoid increasing suspended solids and turbidity levels in the river.<strong><br><\/strong><\/p>\n<p><strong>1.4.4 <\/strong>Conduct mining in sequence (refer to <strong>Figure 5<\/strong>) to allow for replenishment of river sand\/stone at the previously extracted point and avoid an abrupt change in gradient.<\/p>\n\t\t\n<style>\n#text-1879602414 {\n  font-size: 0.95rem;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div class=\"box has-hover   has-hover box-text-bottom\" >\n\n\t\t<div class=\"box-image\" style=\"width:70%;\">\n\t\t\t\t\t\t<div class=\"\" >\n\t\t\t\t<img width=\"1016\" height=\"576\" src=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/13.png\" class=\"attachment- size-\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/13.png 1016w, https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/13-706x400.png 706w, https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/13-768x435.png 768w\" sizes=\"(max-width: 1016px) 100vw, 1016px\" \/>\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\t<div class=\"box-text text-center\" >\n\t\t\t<div class=\"box-text-inner\">\n\t\t\t\t\n\n\t<div id=\"text-479922754\" class=\"text\">\n\t\t\n\n<p><strong>Figure<\/strong> <strong>5:<\/strong> Illustration of mining sequence within the middle third of the river.<\/p>\n\t\t\n<style>\n#text-479922754 {\n  font-size: 0.9rem;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"text-1142794606\" class=\"text t-justify\">\n\t\t\n\n<p><strong>1.4.5<\/strong> Prohibit excessive excavation at the allowable mining area to minimise the change in river. Refer to the following section.<\/p>\n\t\t\n<style>\n#text-1142794606 {\n  font-size: 0.95rem;\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"row\"  id=\"row-1069790800\">\n\n\n\t<div id=\"col-523145425\" class=\"col sop_div medium-1 small-12 large-1\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1064479182\" class=\"col medium-11 small-12 large-11\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-1101987570\" class=\"text t-justify\">\n\t\t\n\n<p><strong>1.4.5.1 <\/strong><strong>Mechanical Method<\/strong><\/p>\n<p>This method involves the use of machinery such as excavators, where it is commonly used in shallow rivers and for larger sized deposits. Another method involves siting an excavator on a barge. This method is normally used for sites that do not have dedicated access roads or are only accessible via water.<\/p>\n<p style=\"padding-left: 40px;\"><strong>a) Mechanical method in shallow rivers:<\/strong><\/p>\n<p style=\"padding-left: 80px;\"><strong>i) <\/strong>Check the allowable mining depth based on DID requirements.<\/p>\n<p style=\"padding-left: 80px;\"><strong>ii) <\/strong>Mark the allowable mining depth on the excavator arm. Refer to Plate 2 for an example of the marking.<\/p>\n<p style=\"padding-left: 80px;\"><strong>iii) <\/strong>Conduct mining in sequence (refer to <strong>Figure 5<\/strong>).<\/p>\n\t\t\n<style>\n#text-1101987570 {\n  font-size: 0.95rem;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div class=\"box has-hover   has-hover box-text-bottom\" >\n\n\t\t<div class=\"box-image\" style=\"width:80%;\">\n\t\t\t\t\t\t<div class=\"\" >\n\t\t\t\t<img width=\"763\" height=\"363\" src=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/Removal-627.png\" class=\"attachment- size-\" alt=\"\" decoding=\"async\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\t<div class=\"box-text text-center\" >\n\t\t\t<div class=\"box-text-inner\">\n\t\t\t\t\n\n\t<div id=\"text-119151757\" class=\"text\">\n\t\t\n\n<p><b>Plate 2:<\/b> Example of marking on the excavator\u2019s arm to ensure extraction does not<br>exceed the allowable depth.<\/p>\n\t\t\n<style>\n#text-119151757 {\n  font-size: 0.95rem;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"text-2413495756\" class=\"text t-justify\">\n\t\t\n\n<p style=\"padding-left: 40px;\"><strong>b) Mechanical method (e.g., excavator located on a barge). <\/strong><\/p>\n<p style=\"padding-left: 40px;\">The recommended control method is as follows:<\/p>\n<p style=\"padding-left: 80px;\"><strong>i) <\/strong>Check the allowable mining depth based on DID requirements.<\/p>\n<p style=\"padding-left: 80px;\"><strong>ii) <\/strong>Measure the water depth of the targeted mining area prior to commencing mining work. An example of a method to measure depth uses a levelling staff \/ rod or a wooden stick.<\/p>\n<p style=\"padding-left: 80px;\"><strong>iii) <\/strong>Sum up the water depth and the allowable mining depth. Mark it on the excavator arm.<\/p>\n\t\t\n<style>\n#text-2413495756 {\n  font-size: 0.95rem;\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"row\"  id=\"row-1470165106\">\n\n\n\t<div id=\"col-1292219034\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"box has-hover   has-hover box-text-bottom\" >\n\n\t\t<div class=\"box-image\" style=\"width:60%;\">\n\t\t\t\t\t\t<div class=\"\" >\n\t\t\t\t<img width=\"558\" height=\"603\" src=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/15.jpg\" class=\"attachment- size-\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/15.jpg 558w, https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/15-370x400.jpg 370w\" sizes=\"(max-width: 558px) 100vw, 558px\" \/>\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\t<div class=\"box-text text-center\" >\n\t\t\t<div class=\"box-text-inner\">\n\t\t\t\t\n\n\t<div id=\"text-739501413\" class=\"text\">\n\t\t\n\n<p><strong>Plate<\/strong> <strong>3:<\/strong> Levelling staff as indicated by the arrow.<\/p>\n\t\t\n<style>\n#text-739501413 {\n  font-size: 0.9rem;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1695588079\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"box has-hover   has-hover box-text-bottom\" >\n\n\t\t<div class=\"box-image\" style=\"width:70%;\">\n\t\t\t\t\t\t<div class=\"\" >\n\t\t\t\t<img width=\"1080\" height=\"559\" src=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/17.jpg\" class=\"attachment- size-\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/17.jpg 1080w, https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/17-773x400.jpg 773w, https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/17-768x398.jpg 768w\" sizes=\"(max-width: 1080px) 100vw, 1080px\" \/>\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\t<div class=\"box-text text-center\" >\n\t\t\t<div class=\"box-text-inner\">\n\t\t\t\t\n\n\t<div id=\"text-1772764978\" class=\"text\">\n\t\t\n\n<p><strong>Figure 6: <\/strong>Illustration of measuring and marking the excavator arm.<\/p>\n\t\t\n<style>\n#text-1772764978 {\n  font-size: 0.9rem;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\t<div id=\"text-2565484161\" class=\"text t-justify\">\n\t\t\n\n<p style=\"text-align: left; padding-left: 80px;\"><strong>iv) <\/strong>Conduct mining in sequence (refer to <strong>Figure 5<\/strong>).<\/p>\n<p style=\"text-align: left; padding-left: 80px;\"><strong>v) <\/strong>Conduct river depth measurement regularly (hourly recommended) to determine changes in the river depth.<\/p>\n<p style=\"text-align: left; padding-left: 80px;\"><strong>vi)<\/strong> Adjust the mining depth marker on the excavator arm based on changes in the river depth.<\/p>\n\t\t\n<style>\n#text-2565484161 {\n  font-size: 0.95rem;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div class=\"box has-hover  hidden has-hover box-text-bottom\" >\n\n\t\t<div class=\"box-image\" style=\"width:70%;\">\n\t\t\t\t\t\t<div class=\"\" >\n\t\t\t\t<img width=\"716\" height=\"349\" src=\"https:\/\/epd.sabah.gov.my\/virsopv2\/wp-content\/uploads\/2023\/05\/plate4-removebg-preview.png\" class=\"attachment- size-\" alt=\"\" decoding=\"async\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\t<div class=\"box-text text-center\" >\n\t\t\t<div class=\"box-text-inner\">\n\t\t\t\t\n\n\t<div id=\"text-3583630125\" class=\"text\">\n\t\t\n\n<p><strong>Plate<\/strong> <strong>4:<\/strong> Example of suction pump cable with clamp.<\/p>\n\t\t\n<style>\n#text-3583630125 {\n  font-size: 0.9rem;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"text-1165885320\" class=\"text t-justify\">\n\t\t\n\n<p style=\"text-align: left;\"><strong>1.4.5.3 <\/strong>Check the mining depth from time to time to avoid excessive excavation. It is recommended that an in-house surveyor is appointed to determine the mining depth based on the current river invert level, baseline river survey plan and the DID\u2019s allowable mining depth.<\/p>\n<p style=\"text-align: left;\"><strong>1.4.5.4 <\/strong>Closely monitor changes in the bed and bank of the river as described in <strong>Appendix 1<\/strong>. When the allowable longitudinal profile and cross-sections of river have been reached, the mining activity shall be stopped. Any further excavation will cause unacceptable riverbank erosion and lowering of the river depth.<\/p>\n\t\t\n<style>\n#text-1165885320 {\n  font-size: 0.95rem;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n<\/div><\/div>\n\n<\/div>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_979959623 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n#section_979959623 .ux-shape-divider--top svg {\n  height: 150px;\n  --divider-top-width: 100%;\n}\n#section_979959623 .ux-shape-divider--bottom svg {\n  height: 150px;\n  --divider-width: 100%;\n}\n<\/style>\n\t<\/section>\n\t\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":4791,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>\u00a0Site Preparation: Mechanical - 1.0 River Stone &amp; 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