City of Nanaimo Removal of Middle and Lower Chase River Dams Tender No APPENDIX E JUNE 2013 LAKE SEDIMENT TESTING

Transcription

1 City of Nanaimo Removal of Middle and Lower Chase River Dams Tender No APPENDIX E JUNE 2013 LAKE SEDIMENT TESTING

2 Colliery Dam Park Sediment Sampling Locations Lewkowich Engineering Ltd. May 2013

3 Colliery Dam Park, Lower Lake Sediment Cores Lewkowich Engineering Ltd. May 2013

4 Colliery Dam Park, Middle Lake Sediment Cores Lewkowich Engineering Ltd. May 2013

5 KLOHN CRIPPEN BERGER LTD ATTN: PAUL WAGNER Ellwood Drive SW EDMONTON AB T6X 0P7 Date Received: Report Date: Version: Client Phone: APR APR-13 16:19 (MT) FINAL Certificate of Analysis Lab Work Order #: L Project P.O. #: NOT SUBMITTED Job Reference: A05130A C of C Numbers: Legal Site Desc: Comments: [This report shall not be reproduced except in full without the written authority of the Laboratory.] ADDRESS: 8081 Lougheed Hwy, Suite 100, Burnaby, BC V5A 1W9 Canada Phone: Fax: ALS CANADA LTD Part of the ALS Group A Campbell Brothers Limited Company

6 A05130A ALS ENVIRONMENTAL ANALYTICAL REPORT L CONTD... PAGE 2 of 5 Version: FINAL Sample Details/Parameters Result Qualifier* D.L. Units Extracted Analyzed Batch L Sampled By: MIDDLE LAKE SAMPLE#4 CLIENT on 28-MAR-13 Matrix: lake sediment Metals in (CSR) Mercury in by CVAFS Mercury (Hg) Metals in by CRC ICPMS Antimony (Sb) Arsenic (As) Barium (Ba) Beryllium (Be) Cadmium (Cd) Chromium (Cr) Cobalt (Co) Copper (Cu) Lead (Pb) Molybdenum (Mo) Nickel (Ni) Selenium (Se) Silver (Ag) Thallium (Tl) Tin (Sn) Uranium (U) Vanadium (V) Zinc (Zn) ph in (1:2 :Water Extraction) ph (1:2 soil:water) Miscellaneous Parameters MUST PSA > 75um Moisture Detailed Salinity Chloride (Cl) (Saturated Paste) Chloride (Cl) SAR, Cations and SO4 in saturated soil Calcium (Ca) Potassium (K) Magnesium (Mg) Sodium (Na) SAR Sulfur (as SO4) ph and EC (Saturated Paste) Saturation Conductivity Sat. Paste < < ph SAR ds m-1 11-APR APR APR APR-13 R R R R R R R L Sampled By: LOWER LAKE SAMPLE#3 CLIENT on 28-MAR-13 Matrix: lake sediment Metals in (CSR) Mercury in by CVAFS Mercury (Hg) Metals in by CRC ICPMS Antimony (Sb) Arsenic (As) Barium (Ba) Beryllium (Be) Cadmium (Cd) < APR-13 R * Refer to Referenced Information for Qualifiers (if any) and Methodology.

7 A05130A ALS ENVIRONMENTAL ANALYTICAL REPORT L CONTD... PAGE 3 of 5 Version: FINAL Sample Details/Parameters Result Qualifier* D.L. Units Extracted Analyzed Batch L LOWER LAKE SAMPLE#3 Sampled By: Matrix: CLIENT on 28-MAR-13 lake sediment Metals in by CRC ICPMS Chromium (Cr) Cobalt (Co) Copper (Cu) Lead (Pb) Molybdenum (Mo) Nickel (Ni) Selenium (Se) Silver (Ag) Thallium (Tl) Tin (Sn) Uranium (U) Vanadium (V) Zinc (Zn) ph in (1:2 :Water Extraction) ph (1:2 soil:water) Miscellaneous Parameters MUST PSA > 75um Moisture Detailed Salinity Chloride (Cl) (Saturated Paste) Chloride (Cl) SAR, Cations and SO4 in saturated soil Calcium (Ca) Potassium (K) Magnesium (Mg) Sodium (Na) SAR Sulfur (as SO4) ph and EC (Saturated Paste) Saturation Conductivity Sat. Paste < < ph SAR ds m-1 11-APR APR APR-13 R R R R R R * Refer to Referenced Information for Qualifiers (if any) and Methodology.

8 A05130A Reference Information L CONTD... PAGE 4 of 5 Version: FINAL Test Method References: ALS Test Code Matrix Test Description Method Reference** ALK-TOT-SAR-SK Alkalinity, Total (Saturated Paste) APHA 2320 B-Auto-Pot. Titration Alkalinity is determined by a titration of an aliquot of saturated soil extract with standardized acid solution to a ph of 4.5. Total alkalinity (as CaCO3) is reported. Reference Greenberg, Arnold E., Cleseri, Lenore S., Eaton, Andrew D., Standard Methods For The Examination of Water and Wastewater, 18th Edition, 1992, Method 2320B. CL-SAR-SK Chloride (Cl) (Saturated Paste) Chloride in a saturated soil extract is determined colorimetrically by auto-analyzer. CSSS(1993) /APHA 4500-CL E HG CVAF-VA MET CCMS-VA Mercury in by CVAFS This analysis is carried out using procedures from CSR Analytical Method: "Strong Acid Leachable Metals (SALM) in ", BC Ministry of Environment, 26 June 2009, and procedures adapted from EPA Method The sample is manually homogenized, dried at 60 degrees Celsius, sieved through a 2 mm (10 mesh) sieve (this sieve step is omitted for international soil samples), and a representative subsample of the dry material is weighed. The sample is then digested at 95 degrees Celsius for 2 hours by block digester using concentrated nitric and hydrochloric acids. Instrumental analysis is by atomic fluorescence spectrophotometry (EPA Method 245.7). Method Limitation: This method is not a total digestion technique. It is a very strong acid digestion that is intended to dissolve those metals that may be environmentally available. By design, elements bound in silicate structures are not normally dissolved by this procedure as they are not usually mobile in the environment. Metals in by CRC ICPMS EPA 200.2/245.7 EPA 200.2/6020A This analysis is carried out using procedures from CSR Analytical Method: "Strong Acid Leachable Metals (SALM) in ", BC Ministry of Environment, 26 June 2009, and procedures adapted from EPA Method The sample is manually homogenized, dried at 60 degrees Celsius, sieved through a 2 mm (10 mesh) sieve (this sieve step is omitted for international soil samples), and a representative subsample of the dry material is weighed. The sample is then digested at 95 degrees Celsius for 2 hours by block digester using concentrated nitric and hydrochloric acids. Instrumental analysis of the digested extract is by collision cell inductively coupled plasma - mass spectrometry (modifed from EPA Method 6020A). Method Limitation: This method is not a total digestion technique. It is a very strong acid digestion that is intended to dissolve those metals that may be environmentally available. By design, elements bound in silicate structures are not normally dissolved by this procedure as they are not usually mobile in the environment. MOISTURE-VA PH-1:2-VA PSA-MUST-SK Moisture content This analysis is carried out gravimetrically by drying the sample at 105 C for a minimum of six hours. ph in (1:2 :Water Extraction) This analysis is carried out in accordance with procedures described in the ph, Electrometric in and Sediment method - Section B Physical/Inorganic and Misc. Constituents, BC Environmental Laboratory Manual The procedure involves mixing the dried (at <60 C) and sieved (No. 10 / 2mm) sample with deionized/distilled water at a 1:2 ratio of sediment to water. The ph of the solution is then measured using a standard ph probe. Particles > 75um (Coarse/Fine) An air-dried sample is reduced to < 2 mm size and mixed with a dispersing agent (Calgon solution). The sample is washed through a 200 mesh (75 m) sieve. The retained mass of sample is used to determine sand fraction. Reference: ASTM D ASTM D Method A BC WLAP METHOD: PH, ELECTROMETRIC, SOIL ASTM D SIEVE SALINITY-INTCHECK-SK SAR-CALC-SO4-SK SAR, Cations and SO4 in saturated soil Ca, Mg, Na, K and SO4 in a saturated soil extract are determined by ICP-OES. CSSS 18.4-Calculation APHA 3120B SAT/PH/EC-SK SO4-SAR-SK ph and EC (Saturated Paste) ph of a saturated soil paste is measured using a ph meter. After equilibration, an extract is obtained by vacuum filtration with conductivity of the extract measured by a conductivity meter. Sulfate (SO4) in saturated soil CSSS /CSSC 3.14/CSSS APHA 3120 B-ICP-OES ** ALS test methods may incorporate modifications from specified reference methods to improve performance. The last two letters of the above test code(s) indicate the laboratory that performed analytical analysis for that test. Refer to the list below: Laboratory Definition Code Laboratory Location

9 A05130A Reference Information L CONTD... PAGE 5 of 5 Version: FINAL Test Method References: ALS Test Code Matrix Test Description Method Reference** SK VA ALS ENVIRONMENTAL - SASKATOON, SASKATCHEWAN, CANADA ALS ENVIRONMENTAL - VANCOUVER, BRITISH COLUMBIA, CANADA Chain of Custody Numbers: GLOSSARY OF REPORT TERMS Surrogates are compounds that are similar in behaviour to target analyte(s), but that do not normally occur in environmental samples. For applicable tests, surrogates are added to samples prior to analysis as a check on recovery. In reports that display the D.L. column, laboratory objectives for surrogates are listed there. - milligrams per kilogram based on dry weight of sample wwt - milligrams per kilogram based on wet weight of sample lwt - milligrams per kilogram based on lipid-adjusted weight - unit of concentration based on volume, parts per million. < - Less than. D.L. - The reporting limit. N/A - Result not available. Refer to qualifier code and definition for explanation. Test results reported relate only to the samples as received by the laboratory. UNLESS OTHERWISE STATED, ALL SAMPLES WERE RECEIVED IN ACCEPTABLE CONDITION. Analytical results in unsigned test reports with the DRAFT watermark are subject to change, pending final QC review.

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