Independent Laboratory Analysis

Laboratory Analysis of SGH® Leach Residue

Explore the TCLP characterization of solid leach residues identified as SGH® and NaCN samples, analyzed using US EPA SW-846 Method 1311.

  • SGH® Residue
  • NaCN Residue
  • Inorganic & Organic Analysis
Professional mineral laboratory analysis with ore samples and testing instruments
Test Protocol TCLP · US EPA SW-846 Method 1311
  • Client PT Dimar Reka Industri
  • Sample Type Solid Leach Residue
  • Test Method TCLP — US EPA SW-846 Method 1311
  • Order Date May 26, 2026

Understanding the TCLP Analysis

Why Leach Residue Characterization Matters

The Toxicity Characteristic Leaching Procedure, or TCLP, is a laboratory extraction method used to evaluate the potential mobility of selected constituents from solid materials under specified test conditions. Residue characterization supports environmental screening, process evaluation, waste-management planning, and responsible mining practices.

Characterization, not a universal field simulation

The method evaluates submitted material under a defined laboratory extraction protocol.

Laboratory Workflow

From Solid Residue to Constituent Profile

US EPA SW-846 Method 1311
  1. Step 01 Solid Residue
  2. Step 02 Sample Preparation
  3. Step 03 TCLP Extraction
  4. Step 04 Laboratory Measurement
  5. Step 05 Constituent Profile
Analysis Coverage

Five Groups of Reported Parameters

  • Inorganic Parameters
  • Anions
  • Organic Compounds
  • Pesticides
  • Additional Parameters

Key SGH® Residue Findings

Selected Results from the SGH® Residue Sample

In the submitted SGH® solid leach residue sample, total cyanide was reported below the stated laboratory detection limit of 0.01 mg/L.

  • Hg Mercury < 0.01 mg/L
  • Pb Lead < 0.01 mg/L
  • Cd Cadmium < 0.01 mg/L
  • Cu Copper < 0.01 mg/L
  • Ni Nickel < 0.01 mg/L
  • Se Selenium < 0.01 mg/L
  • Ag Silver < 0.01 mg/L
  • As Arsenic 0.01 mg/L
  • Ba Barium 0.09 mg/L
  • B Boron 0.06 mg/L
  • Zn Zinc 0.05 mg/L

Results shown relate to the submitted SGH® solid leach residue sample and are presented as reported laboratory values. They do not establish zero concentration, an overall toxicity classification, or environmental certification.

SGH® and NaCN Comparison

Comparative Residue Characterization

A side-by-side presentation of selected results reported for two separately identified solid leach residue samples. All values are shown in mg/L.

Selected Comparison

Reported Results at a Glance

Unit · mg/L
ParameterSGH® ResidueNaCN Residue
Total Cyanide< 0.01< 0.01
Arsenic0.01< 0.01
Barium0.090.15
Boron0.060.07
Zinc0.050.08
Chloride0.600.64
Fluoride< 0.060.07
Mercury< 0.01< 0.01
Lead< 0.01< 0.01
Cadmium< 0.01< 0.01
Complete Parameter Groups

Explore the Full Reported Dataset

Open each category to compare the two submitted residue samples. The symbol “<” denotes a result below the stated detection limit.

Inorganic Parameters16 parameters
ParameterSGH® ResidueNaCN Residue
Antimony< 0.02< 0.02
Arsenic0.01< 0.01
Barium0.090.15
Beryllium< 0.01< 0.01
Boron0.060.07
Cadmium< 0.01< 0.01
Chromium Hexavalent< 0.08< 0.08
Copper< 0.01< 0.01
Lead< 0.01< 0.01
Mercury< 0.01< 0.01
Molybdenum< 0.01< 0.01
Nickel< 0.01< 0.01
Selenium< 0.01< 0.01
Silver< 0.01< 0.01
Tributyltin Oxide *< 0.008< 0.008
Zinc0.050.08
Anions6 parameters
ParameterSGH® ResidueNaCN Residue
Chloride0.600.64
Cyanide (total) *< 0.01< 0.01
Fluoride< 0.060.07
Iodide *< 0.04< 0.04
Nitrate< 0.02< 0.02
Nitrite< 0.01< 0.01
Organic Compounds36 parameters
ParameterSGH® ResidueNaCN Residue
Benzene< 0.003< 0.003
Benzo(a)pyrene *< 0.00002< 0.00002
Carbon Tetrachloride< 0.0004< 0.0004
Chlorobenzene< 0.0002< 0.0002
Chloroform< 0.002< 0.002
2-Chlorophenol< 0.0005< 0.0005
Total Cresol< 0.001< 0.001
Di(2-ethylhexyl) phthalate< 0.002< 0.002
1,2-Dichlorobenzene< 0.0005< 0.0005
1,4-Dichlorobenzene< 0.0003< 0.0003
1,2-Dichloroethane< 0.0004< 0.0004
1,1-Dichloroethene< 0.0004< 0.0004
1,2-Dichloroethene *< 0.0006< 0.0006
Dichloromethane< 0.003< 0.003
2,4-Dichlorophenol< 0.0007< 0.0007
2,4-Dinitrotoluene< 0.0006< 0.0006
Ethylbenzene< 0.004< 0.004
EDTA *< 0.05< 0.05
Formaldehyde *< 0.03< 0.03
Hexachlorobutadiene< 0.0005< 0.0005
Methyl Ethyl Ketone< 0.3< 0.3
Nitrobenzene< 0.0004< 0.0004
Phenol (total, non-halogenated) *< 0.1< 0.1
Styrene< 0.004< 0.004
1,1,1,2-Tetrachloroethane *< 0.0002< 0.0002
1,1,2,2-Tetrachloroethane *< 0.0004< 0.0004
Tetrachloroethene< 0.0003< 0.0003
Toluene< 0.005< 0.005
Trichlorobenzene (total) *< 0.006< 0.006
1,1,1-Trichloroethane< 0.0005< 0.0005
1,1,2-Trichloroethane< 0.0003< 0.0003
Trichloroethene< 0.0004< 0.0004
2,4,5-Trichlorophenol< 0.0005< 0.0005
2,4,6-Trichlorophenol< 0.0004< 0.0004
Vinyl Chloride< 0.0004< 0.0004
Xylene (total)< 0.007< 0.007
Pesticides8 parameters
ParameterSGH® ResidueNaCN Residue
Aldrine + Dieldrine< 0.0005< 0.0005
DDT + DDD + DDE< 0.0005< 0.0005
2,4-D *< 0.0007< 0.0007
Chlordane< 0.0006< 0.0006
Heptachlor< 0.0007< 0.0007
Lindane *< 0.0007< 0.0007
Metoxychlor< 0.001< 0.001
Pentachlorophenol< 0.0005< 0.0005
Additional Parameters6 parameters
ParameterSGH® ResidueNaCN Residue
Endrine< 0.0006< 0.0006
Hexachlorobenzene< 0.0006< 0.0006
Hexachloroethane< 0.0005< 0.0005
Pyridine< 0.06< 0.06
Toxaphene< 0.0003< 0.0003
2,4,5-TP (Silvex) *< 0.0006< 0.0006

* Parameter marked with an asterisk was identified in the report as excluded from the scope of KAN accreditation. All displayed analytical values use mg/L.

Scope, Important Notes & CTA

Responsible Interpretation of Laboratory Data

Laboratory results are most useful when their sample identity, test scope, detection limits, and reporting conditions are understood together. The information below preserves the essential context stated in the report.

Mineral laboratory analysis associated with SGH residue characterization
Report Identification

Test References

  • SGH® sampleCBT380110006608052026-02
  • NaCN sampleCBT380110006608052026-01
  • Sample IDSolid Residue Leach SGH and Solid Residue Leach NaCN
  • Client referenceMIN.IWO.26.03806-03807
Reporting Context

Important Notes from the Report

These conditions define how the published summary should be read and used.

  1. Customer sampling. Sampling was carried out by the customer.

  2. Sample-specific results. Results relate only to the samples submitted for analysis.

  3. Process-dependent characteristics. Residue characteristics may change according to ore mineralogy, reagent dosage, pH, process duration, and other operating conditions.

  4. Accreditation notation. Parameters marked with an asterisk were stated as outside the scope of KAN accreditation.

  5. Total cyanide notation. Cyanide (total) is marked with an asterisk in the report.

  6. No regulatory determination. The report does not provide a regulatory pass/fail conclusion.

  7. Reproduction restriction. The report states that it may not be reproduced except in full context and with prior written approval from the laboratory.

Technical Documentation

Request the Complete Technical Documentation

Contact the EcoGold technical team to discuss the laboratory findings, ore-specific testing, processing configuration, and residue characterization requirements.