{"id":1571,"date":"2019-10-07T09:51:41","date_gmt":"2019-10-07T13:51:41","guid":{"rendered":"https:\/\/actlabs.readyforlaunch.ca\/?page_id=1571"},"modified":"2026-02-04T11:39:45","modified_gmt":"2026-02-04T16:39:45","slug":"enviromining-and-aba","status":"publish","type":"page","link":"https:\/\/actlabs.com\/es\/environmental\/services\/enviromining-and-aba\/","title":{"rendered":"Enviromining and ABA"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_5 1_5 fusion-one-fifth fusion-column-first fusion-no-small-visibility fusion-no-medium-visibility\" style=\"--awb-bg-size:cover;width:20%;width:calc(20% - ( ( 4% ) * 0.2 ) );margin-right: 4%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-column-wrapper-legacy\"><div class=\"fusion-widget-area awb-widget-area-element fusion-widget-area-1 fusion-content-widget-area\" style=\"--awb-title-color:#003f6d;--awb-padding:0px 0px 0px 0px;\"><style type=\"text\/css\" data-id=\"avada-vertical-menu-widget-6\">#avada-vertical-menu-widget-6 > ul.menu { margin-top: -8px; }<\/style><div id=\"avada-vertical-menu-widget-6\" class=\"widget avada_vertical_menu\"><style>#fusion-vertical-menu-widget-avada-vertical-menu-widget-6-nav ul.menu li a {font-size:15px;}<\/style><nav id=\"fusion-vertical-menu-widget-avada-vertical-menu-widget-6-nav\" class=\"fusion-vertical-menu-widget fusion-menu hover left no-border\" aria-label=\"Secondary Navigation: \"><ul id=\"menu-environmental\" class=\"menu\"><li id=\"menu-item-1490\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1490\"><a href=\"https:\/\/actlabs.com\/es\/environmental\/\"><span class=\"link-text\"> Environmental<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-1526\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-1526\"><a href=\"https:\/\/actlabs.com\/es\/environmental\/sample-preparation\/\"><span class=\"link-text\"> Sample Preparation<\/span><span class=\"arrow\"><\/span><\/a><ul class=\"sub-menu\"><li id=\"menu-item-1531\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1531\"><a href=\"https:\/\/actlabs.com\/es\/environmental\/sample-preparation\/sample-submittal\/\"><span class=\"link-text\"> Sample Submittal<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-1539\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1539\"><a href=\"https:\/\/actlabs.com\/es\/environmental\/sample-preparation\/sample-storage\/\"><span class=\"link-text\"> Sample Storage<\/span><span class=\"arrow\"><\/span><\/a><\/li><\/ul><\/li><li id=\"menu-item-1544\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-1544\"><a href=\"https:\/\/actlabs.com\/es\/environmental\/services\/\"><span class=\"link-text\"> Services<\/span><span class=\"arrow\"><\/span><\/a><ul class=\"sub-menu\"><li id=\"menu-item-1546\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1546\"><a href=\"https:\/\/actlabs.com\/es\/environmental\/services\/water-analysis\/\"><span class=\"link-text\"> Water Analysis<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-1555\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1555\"><a href=\"https:\/\/actlabs.com\/es\/environmental\/services\/metals-in-vegetation\/\"><span class=\"link-text\"> Metals in Vegetation<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-1551\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1551\"><a href=\"https:\/\/actlabs.com\/es\/environmental\/services\/metals-in-soil\/\"><span class=\"link-text\"> Metals in Soil<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-1561\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1561\"><a href=\"https:\/\/actlabs.com\/es\/environmental\/services\/organics-in-soil\/\"><span class=\"link-text\"> Organics in Soil<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-1567\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1567\"><a href=\"https:\/\/actlabs.com\/es\/environmental\/services\/radionuclides\/\"><span class=\"link-text\"> Radionuclides<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-1570\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1570\"><a href=\"https:\/\/actlabs.com\/es\/environmental\/services\/x-ray-diffraction\/\"><span class=\"link-text\"> X-Ray Diffraction<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-1545\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1545\"><a href=\"https:\/\/actlabs.com\/es\/environmental\/services\/isotopic-analysis\/\"><span class=\"link-text\"> Isotopic Analysis<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-1573\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1573\"><a href=\"https:\/\/actlabs.com\/es\/environmental\/services\/enviromining-and-aba\/\"><span class=\"link-text\"> Enviromining and ABA<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-1576\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1576\"><a href=\"https:\/\/actlabs.com\/es\/environmental\/services\/misc-analysis\/\"><span class=\"link-text\"> Misc. Analysis<\/span><span class=\"arrow\"><\/span><\/a><\/li><\/ul><\/li><li id=\"menu-item-2473\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2473\"><a href=\"https:\/\/actlabs.com\/es\/actlabs-downloads\/environment-resources\/\"><span class=\"link-text\"> Environment Resources<\/span><span class=\"arrow\"><\/span><\/a><\/li><\/ul><\/nav><\/div><div class=\"fusion-additional-widget-content\"><\/div><\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div>\n<div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_3_4 3_4 fusion-three-fourth fusion-column-last\" style=\"--awb-bg-size:cover;width:75%;width:calc(75% - ( ( 4% ) * 0.75 ) );\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-column-wrapper-legacy\"><div class=\"fusion-title title fusion-title-1 fusion-sep-none fusion-title-text fusion-title-size-one\"><h1 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;\">ENVIROMINING AND ACID BASE ACCOUNTING<\/h1><\/div><div class=\"fusion-title title fusion-title-2 fusion-sep-none fusion-title-text fusion-title-size-two\"><h2 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;\">Actlabs offers Static and Kinetic Testing, Leachate Quality Analyses, Humidity Cell testing and Vegetation Growth potential analyses as described below.<\/h2><\/div><div class=\"fusion-text fusion-text-1\"><p>Acid\/Base Accounting (ABA) is used to assess the ability of a rock body to produce acid rock drainage. As mineralogy or rock forming minerals in the sample affects the accuracy of ABA analysis, it is advised to obtain information of the mineralogy of the samples.<\/p>\n<\/div><div class=\"fusion-title title fusion-title-3 fusion-sep-none fusion-title-text fusion-title-size-two\"><h2 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;\">Static Testing<\/h2><\/div><div class=\"accordian fusion-accordian\" style=\"--awb-border-size:1px;--awb-icon-size:13px;--awb-content-font-size:18px;--awb-icon-alignment:left;--awb-hover-color:#f9f9f9;--awb-border-color:rgba(204,204,204,0);--awb-background-color:#f9f9f9;--awb-divider-color:#e0dede;--awb-divider-hover-color:#e0dede;--awb-icon-color:#ffffff;--awb-title-color:#1e99df;--awb-content-color:#4f4d4d;--awb-icon-box-color:#1a80b6;--awb-toggle-hover-accent-color:#1a80b6;--awb-title-font-family:&quot;Open Sans&quot;;--awb-title-font-weight:regular;--awb-title-font-style:normal;--awb-title-font-size:18px;--awb-content-font-family:&quot;Open Sans&quot;;--awb-content-font-style:normal;--awb-content-font-weight:400;\"><div class=\"panel-group fusion-toggle-icon-boxed\" id=\"accordion-1571-1\"><div class=\"fusion-panel panel-default panel-1449264e83257e49c fusion-toggle-no-divider fusion-toggle-boxed-mode\" style=\"--awb-title-color:#1e99df;--awb-content-color:#4f4d4d;\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_1449264e83257e49c\"><a aria-expanded=\"false\" aria-controls=\"1449264e83257e49c\" role=\"button\" data-toggle=\"collapse\" data-target=\"#1449264e83257e49c\" href=\"#1449264e83257e49c\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">Code E11 \u2013 Acid\/Base Accounting<\/span><\/a><\/h4><\/div><div id=\"1449264e83257e49c\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_1449264e83257e49c\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p>Acid-Base Accounting: Acid Base Accounting (ABA) is used to make static measurements of Acid Rock Drainage potential. Measurements of total sulphur or sulphide sulphur are used to estimate the amount of acid bearing material. Using this information, the Neutralization Potential (NP), Acid Producing Potential (AP) and Net Neutralization Potential (Net NP) are reported.<\/p>\n<p>The Sobek package is the original method described by Sobek for the US EPA. The Modified Sobek package is that by Lawrence and Wang. The Siderite correction package applies a method to limit the overestimation of Net NP in the Sobek method caused by the presence of siderite.<\/p>\n<p>Additional carbon and sulphur species and calculated parameters are available on request for additional cost. Contact us to discuss your specific project requirements and we can provide you with a customised analysis package to meet your needs.<\/p>\n<div id=\"footable_parent_1455\"\n         class=\" footable_parent ninja_table_wrapper loading_ninja_table wp_table_data_press_parent semantic_ui \">\n                <table data-ninja_table_instance=\"ninja_table_instance_0\" data-footable_id=\"1455\" data-filter-delay=\"1000\" aria-label=\"Code E11 \u2013 Acid\/Base Accounting\"            id=\"footable_1455\"\n           data-unique_identifier=\"ninja_table_unique_id_1695623874_1455\"\n           class=\" foo-table ninja_footable foo_table_1455 ninja_table_unique_id_1695623874_1455 ui table  ninja_search_right nt_type_legacy_table selectable celled striped compact vertical_centered  footable-paging-right ninja_table_search_disabled ninja_table_pro\">\n                <colgroup>\n                            <col class=\"ninja_column_0 \">\n                            <col class=\"ninja_column_1 \">\n                            <col class=\"ninja_column_2 \">\n                            <col class=\"ninja_column_3 \">\n                    <\/colgroup>\n        <thead>\n<tr class=\"footable-header\">\n                                                                        <th scope=\"col\"  class=\"ninja_column_0 ninja_clmn_nm_element \">Parameter<\/th><th scope=\"col\"  class=\"ninja_column_1 ninja_clmn_nm_detectionlimit \">11-ABA Sobek<\/th><th scope=\"col\"  class=\"ninja_column_2 ninja_clmn_nm_acid_base_enhanced_package \">11-ABA Modified Sobek<\/th><th scope=\"col\"  class=\"ninja_column_3 ninja_clmn_nm_acid_base_supreme_package \">11-ABA Sobek Siderite<\/th><\/tr>\n<\/thead>\n<tbody>\n\n        <tr data-row_id=\"5893\" class=\"ninja_table_row_0 nt_row_id_5893\">\n            <td>Paste pH<\/td><td>\u2022<\/td><td><span>\u2022<\/span><\/td><td><span>\u2022<\/span><\/td>        <\/tr>\n            <tr data-row_id=\"5898\" class=\"ninja_table_row_1 nt_row_id_5898\">\n            <td>Fizz Rating<\/td><td>\u2022<\/td><td>\u2022<\/td><td><span>\u2022<\/span><\/td>        <\/tr>\n            <tr data-row_id=\"5888\" class=\"ninja_table_row_2 nt_row_id_5888\">\n            <td>AP<\/td><td>\u2022<\/td><td><span>\u2022<\/span><\/td><td><span>\u2022<\/span><\/td>        <\/tr>\n            <tr data-row_id=\"5889\" class=\"ninja_table_row_3 nt_row_id_5889\">\n            <td>NP<\/td><td>\u2022<\/td><td><span>\u2022<\/span><\/td><td><span>\u2022<\/span><\/td>        <\/tr>\n            <tr data-row_id=\"5890\" class=\"ninja_table_row_4 nt_row_id_5890\">\n            <td>Net NP<\/td><td>\u2022<\/td><td><span>\u2022<\/span><\/td><td><span>\u2022<\/span><\/td>        <\/tr>\n            <tr data-row_id=\"5891\" class=\"ninja_table_row_5 nt_row_id_5891\">\n            <td>NPR<\/td><td>\u2022<\/td><td><span>\u2022<\/span><\/td><td><span>\u2022<\/span><\/td>        <\/tr>\n            <tr data-row_id=\"5894\" class=\"ninja_table_row_6 nt_row_id_5894\">\n            <td>Sulphur (total)<\/td><td>\u2022<\/td><td><span>\u2022<\/span><\/td><td><span>\u2022<\/span><\/td>        <\/tr>\n            <tr data-row_id=\"5892\" class=\"ninja_table_row_7 nt_row_id_5892\">\n            <td>Sulphide<\/td><td><\/td><td><span>\u2022<\/span><\/td><td><\/td>        <\/tr>\n            <tr data-row_id=\"5895\" class=\"ninja_table_row_8 nt_row_id_5895\">\n            <td>Sulphate (total)<\/td><td><\/td><td><span>\u2022<\/span><\/td><td><\/td>        <\/tr>\n    <\/tbody><!--ninja_tobody_rendering_done-->\n    <\/table>\n    \n    \n    \n<\/div>\n\n<\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-41644fe048c46a2ca fusion-toggle-no-divider fusion-toggle-boxed-mode\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_41644fe048c46a2ca\"><a aria-expanded=\"false\" aria-controls=\"41644fe048c46a2ca\" role=\"button\" data-toggle=\"collapse\" data-target=\"#41644fe048c46a2ca\" href=\"#41644fe048c46a2ca\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">Code E11 \u2013 Maximum Potential Acidity (MPA)<\/span><\/a><\/h4><\/div><div id=\"41644fe048c46a2ca\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_41644fe048c46a2ca\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p>The amount of acid that could be generated by the sulphur contained within a sample. This is done assuming that all sulphur occurs as reactive pyrite.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-7c2ed35ca825074f6 fusion-toggle-no-divider fusion-toggle-boxed-mode\" style=\"--awb-title-color:#1e99df;--awb-content-color:#4f4d4d;\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_7c2ed35ca825074f6\"><a aria-expanded=\"false\" aria-controls=\"7c2ed35ca825074f6\" role=\"button\" data-toggle=\"collapse\" data-target=\"#7c2ed35ca825074f6\" href=\"#7c2ed35ca825074f6\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">Code E11 \u2013 Net Acid Generation (NAG)<\/span><\/a><\/h4><\/div><div id=\"7c2ed35ca825074f6\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_7c2ed35ca825074f6\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p>The sample is reacted with hydrogen peroxide to rapidly oxidize sulphide minerals to assess if a sample is capable of neutralizing the potential acid produced. NAG pH and NAG at pH 4.5 and pH 7.0 are reported. False positive results may occur if the sample contains significant organic material. If metals in the leachate require analysis, the leaching process must be done a second time, which means the procedure is charged twice.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-dd73ae2df1e9e0f27 fusion-toggle-no-divider fusion-toggle-boxed-mode\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_dd73ae2df1e9e0f27\"><a aria-expanded=\"false\" aria-controls=\"dd73ae2df1e9e0f27\" role=\"button\" data-toggle=\"collapse\" data-target=\"#dd73ae2df1e9e0f27\" href=\"#dd73ae2df1e9e0f27\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">Code E11 \u2013 Acid Neutralizing Capacity (ANC)<\/span><\/a><\/h4><\/div><div id=\"dd73ae2df1e9e0f27\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_dd73ae2df1e9e0f27\"><div class=\"panel-body toggle-content fusion-clearfix\">Acid buffering inherent to the sample caused by a reaction of produced acid with other minerals contained within the sample. The ANC is determined using the Modified Sobek Method. A known amount of hydrochloric acid is added to a sample and allowed to react. The sample is then back-titrated with sodium hydroxide to determine the amount of unreacted HCl. The amount of acid consumed by the reaction with the sample is calculated and expressed as kg H<sub>2<\/sub>SO<sub>4<\/sub>\/t.<\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-3a3d5ed091fafead3 fusion-toggle-no-divider fusion-toggle-boxed-mode\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_3a3d5ed091fafead3\"><a aria-expanded=\"false\" aria-controls=\"3a3d5ed091fafead3\" role=\"button\" data-toggle=\"collapse\" data-target=\"#3a3d5ed091fafead3\" href=\"#3a3d5ed091fafead3\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">Code E11 \u2013 Net Acid Production Potential (NAPP)<\/span><\/a><\/h4><\/div><div id=\"3a3d5ed091fafead3\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_3a3d5ed091fafead3\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p>Amount of acid potentially produced by a sample after allowing for inherent neutralizing capacity (ANC). The NAPP is calculated using the formula:<\/p>\n<p>NAPP = Maximum Potential Acidity &#8211; ANC<\/p>\n<\/div><\/div><\/div><\/div><\/div><div class=\"fusion-title title fusion-title-4 fusion-sep-none fusion-title-text fusion-title-size-two\"><h2 class=\"fusion-title-heading title-heading-left\" style=\"margin:0;\">Kinetic Testing<\/h2><\/div><div class=\"accordian fusion-accordian\" style=\"--awb-border-size:1px;--awb-icon-size:13px;--awb-content-font-size:18px;--awb-icon-alignment:left;--awb-hover-color:#f9f9f9;--awb-border-color:rgba(204,204,204,0);--awb-background-color:#f9f9f9;--awb-divider-color:#e0dede;--awb-divider-hover-color:#e0dede;--awb-icon-color:#ffffff;--awb-title-color:#1e99df;--awb-content-color:#4f4d4d;--awb-icon-box-color:#1a80b6;--awb-toggle-hover-accent-color:#1a80b6;--awb-title-font-family:&quot;Open Sans&quot;;--awb-title-font-weight:regular;--awb-title-font-style:normal;--awb-title-font-size:18px;--awb-content-font-family:&quot;Open Sans&quot;;--awb-content-font-style:normal;--awb-content-font-weight:400;\"><div class=\"panel-group fusion-toggle-icon-boxed\" id=\"accordion-1571-2\"><div class=\"fusion-panel panel-default panel-b8ee29a43eed616f5 fusion-toggle-no-divider fusion-toggle-boxed-mode\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_b8ee29a43eed616f5\"><a aria-expanded=\"false\" aria-controls=\"b8ee29a43eed616f5\" role=\"button\" data-toggle=\"collapse\" data-target=\"#b8ee29a43eed616f5\" href=\"#b8ee29a43eed616f5\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\"> Code E11 \u2013 Kinetic Net Acid Generation<\/span><\/a><\/h4><\/div><div id=\"b8ee29a43eed616f5\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_b8ee29a43eed616f5\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p>This test provides an indication of the reactivity of sulphides contained within a sample. It is used to provide a qualitative assessment of the likely lag time before the onset of acid conditions in the field. The test is performed like the NAG test, however the pH and temperature are monitored. The reaction kinetics are then extrapolated to the field situation.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-0f6e9ac866f31614a fusion-toggle-no-divider fusion-toggle-boxed-mode\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_0f6e9ac866f31614a\"><a aria-expanded=\"false\" aria-controls=\"0f6e9ac866f31614a\" role=\"button\" data-toggle=\"collapse\" data-target=\"#0f6e9ac866f31614a\" href=\"#0f6e9ac866f31614a\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">Code E11 \u2013 Sequential Net Acid Generation<\/span><\/a><\/h4><\/div><div id=\"0f6e9ac866f31614a\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_0f6e9ac866f31614a\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p>Samples with high sulphide content may need to be reacted with hydrogen peroxide more than once in order to ensure complete oxidation of all sulphides has occurred. A sample is reacted several times and at the end of each stage the sample is filtered to separate the solids and NAG liquor. The NAG liquor is then assayed for pH and acidity, following the method for a standard NAG test. The solids are then recovered for repeat oxidation. The total NAG capacity of the sample is determined by adding the individual acid capacities from each stage.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-b219e667a2de59344 fusion-toggle-no-divider fusion-toggle-boxed-mode\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_b219e667a2de59344\"><a aria-expanded=\"false\" aria-controls=\"b219e667a2de59344\" role=\"button\" data-toggle=\"collapse\" data-target=\"#b219e667a2de59344\" href=\"#b219e667a2de59344\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">Code E11 \u2013 Acid Buffering Characterization Curves (ABCC)<\/span><\/a><\/h4><\/div><div id=\"b219e667a2de59344\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_b219e667a2de59344\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p>ABCC is determined by acidifying a sample with dilute acid to approximately pH of 3 in a 16 to 24 hour time period. This method typically accounts for more readily available carbonates, such as calcite and dolomite, as this is a less aggressive treatment than the ANC method. When carbonates are present in sufficient quantity they will typically buffer a waste rock at near neutral pH. This is required to maintain low metal solubilities.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-00cea5283b46cc5d6 fusion-toggle-no-divider fusion-toggle-boxed-mode\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_00cea5283b46cc5d6\"><a aria-expanded=\"false\" aria-controls=\"00cea5283b46cc5d6\" role=\"button\" data-toggle=\"collapse\" data-target=\"#00cea5283b46cc5d6\" href=\"#00cea5283b46cc5d6\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">Code E11 \u2013 Free Draining Kinetic Column Leach Procedure<\/span><\/a><\/h4><\/div><div id=\"00cea5283b46cc5d6\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_00cea5283b46cc5d6\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p>These columns are used in addition to environmental geochemical investigations on mine rock and waste materials to determine drainage chemistry. The columns simulate field weathering conditions in order to provide data for sulphide reactivity, oxidation kinetics, metal solubility and leaching behavior of test materials. The procedure simulates a weekly wet-dry cycle and a monthly leaching cycle.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-b99c22f6f61806572 fusion-toggle-no-divider fusion-toggle-boxed-mode\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_b99c22f6f61806572\"><a aria-expanded=\"false\" aria-controls=\"b99c22f6f61806572\" role=\"button\" data-toggle=\"collapse\" data-target=\"#b99c22f6f61806572\" href=\"#b99c22f6f61806572\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">Code E11 \u2013 Shake Flask Extraction (SFE)<\/span><\/a><\/h4><\/div><div id=\"b99c22f6f61806572\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_b99c22f6f61806572\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p>Used to obtain leached elements of interest, such as As, Se and Hg from a sample. Leached elements are analyzed using ICP-MS and measurements of pH and conductivity are reported.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-225f90140bbdb2a03 fusion-toggle-no-divider fusion-toggle-boxed-mode\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_225f90140bbdb2a03\"><a aria-expanded=\"false\" aria-controls=\"225f90140bbdb2a03\" role=\"button\" data-toggle=\"collapse\" data-target=\"#225f90140bbdb2a03\" href=\"#225f90140bbdb2a03\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">Code E12 \u2013 Leachate Quality<\/span><\/a><\/h4><\/div><div id=\"225f90140bbdb2a03\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_225f90140bbdb2a03\"><div class=\"panel-body toggle-content fusion-clearfix\"><div id=\"footable_parent_1456\"\n         class=\" footable_parent ninja_table_wrapper loading_ninja_table wp_table_data_press_parent semantic_ui \">\n                <table data-ninja_table_instance=\"ninja_table_instance_1\" data-footable_id=\"1456\" data-filter-delay=\"1000\" aria-label=\"Code E12 \u2013 Leachate Quality\"            id=\"footable_1456\"\n           data-unique_identifier=\"ninja_table_unique_id_185386224_1456\"\n           class=\" foo-table ninja_footable foo_table_1456 ninja_table_unique_id_185386224_1456 ui table  nt_type_legacy_table selectable celled striped compact vertical_centered  footable-paging-right ninja_table_search_disabled ninja_table_pro\">\n                <colgroup>\n                            <col class=\"ninja_column_0 \">\n                            <col class=\"ninja_column_1 \">\n                    <\/colgroup>\n        <thead>\n<tr class=\"footable-header\">\n                                        <th scope=\"col\"  class=\"ninja_column_0 ninja_clmn_nm_element \">Parameter<\/th><th scope=\"col\"  class=\"ninja_column_1 ninja_clmn_nm_detectionlimit \">Leachate Extraction & Analysis<\/th><\/tr>\n<\/thead>\n<tbody>\n\n        <tr data-row_id=\"5914\" class=\"ninja_table_row_0 nt_row_id_5914\">\n            <td>SWEP<\/td><td>\u2022<\/td>        <\/tr>\n            <tr data-row_id=\"5915\" class=\"ninja_table_row_1 nt_row_id_5915\">\n            <td>TCLP<\/td><td>\u2022<\/td>        <\/tr>\n            <tr data-row_id=\"5916\" class=\"ninja_table_row_2 nt_row_id_5916\">\n            <td>EPA ( includes metals and Hg)<\/td><td>\u2022<\/td>        <\/tr>\n            <tr data-row_id=\"5917\" class=\"ninja_table_row_3 nt_row_id_5917\">\n            <td>MWEP (leach only for metals)<\/td><td>\u2022<\/td>        <\/tr>\n    <\/tbody><!--ninja_tobody_rendering_done-->\n    <\/table>\n    \n    \n    \n<\/div>\n<\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-297678d0f86224a7f fusion-toggle-no-divider fusion-toggle-boxed-mode\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_297678d0f86224a7f\"><a aria-expanded=\"false\" aria-controls=\"297678d0f86224a7f\" role=\"button\" data-toggle=\"collapse\" data-target=\"#297678d0f86224a7f\" href=\"#297678d0f86224a7f\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">Code E13 - Humidty Cell (ASTM D5744-96)<\/span><\/a><\/h4><\/div><div id=\"297678d0f86224a7f\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_297678d0f86224a7f\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p>This method accelerates the natural weathering rate of a sample causing diagnostic weathering products. The weekly parameters measured are pH, Eh, conductivity, sulphate-ion concentration, acidity and alkalinity. Selected metals are measured on a less regular basis (weeks 0, 1, 2, 4, 8, 12, 16 and 20). Weekly cycles are used with three days of dry air, followed by three days of water saturated air. Day 7 uses a leach with water. It is recommended that a test duration of 20 weeks be used.<\/p>\n<div id=\"footable_parent_1457\"\n         class=\" footable_parent ninja_table_wrapper loading_ninja_table wp_table_data_press_parent semantic_ui \">\n                <table data-ninja_table_instance=\"ninja_table_instance_2\" data-footable_id=\"1457\" data-filter-delay=\"1000\" aria-label=\"Code E13 - Humidty Cell (ASTM D5744-96)\"            id=\"footable_1457\"\n           data-unique_identifier=\"ninja_table_unique_id_2958184063_1457\"\n           class=\" foo-table ninja_footable foo_table_1457 ninja_table_unique_id_2958184063_1457 ui table  nt_type_legacy_table selectable celled striped compact vertical_centered  footable-paging-right ninja_table_search_disabled ninja_table_pro\">\n                <colgroup>\n                            <col class=\"ninja_column_0 \">\n                    <\/colgroup>\n        <thead>\n<tr class=\"footable-header\">\n                        <th scope=\"col\"  class=\"ninja_column_0 ninja_clmn_nm_element \">Test<\/th><\/tr>\n<\/thead>\n<tbody>\n\n        <tr data-row_id=\"5925\" class=\"ninja_table_row_0 nt_row_id_5925\">\n            <td><p>Humidity Cell set-up<\/p><\/td>        <\/tr>\n            <tr data-row_id=\"5926\" class=\"ninja_table_row_1 nt_row_id_5926\">\n            <td><p>Weekly Humidity Cell test<\/p><\/td>        <\/tr>\n            <tr data-row_id=\"5927\" class=\"ninja_table_row_2 nt_row_id_5927\">\n            <td><span>Metal Measurements (Cu, Zn) (cost per analysis)<\/span><\/td>        <\/tr>\n    <\/tbody><!--ninja_tobody_rendering_done-->\n    <\/table>\n    \n    \n    \n<\/div>\n\n<\/div><\/div><\/div><\/div><\/div><div class=\"fusion-align-block\"><a class=\"fusion-button button-flat fusion-button-default-size button-default fusion-button-default button-1 fusion-button-span-yes fusion-button-default-type button-price-list\" target=\"_self\" href=\"\/downloads\/environment-resources\/\"><span 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