Insitu Treatment of Contaminated Fill in a Former Cove Saves Millions in Remediation Costs Charles M. Wilk ALLU Group Inc.
What is S/S Treatment for Remediation? Involves mixing a binding/reaction agent(s) into contaminated media such as soil, sediment, sludge or industrial waste. S/S treatment protects human health and the environment by immobilizing hazardous constituents within treated material. Physical (solidification) and chemical (stabilization) changes to the treated material. Mobility Reduction Terms: Stabilisation (UK), Inertage (France), Immobilization (EU).
EPA-542-R-07-012 Solidification/ Stabilization 217 17 18 13 13 16 7 20 35 180
Types of Sites Applied o Wood Preserving Sites o Dredged Material o Herbicide and Pesticide Sites o Oil Refinery Sludge Lagoons o Manufactured Gas Plants o Sediment including PCB o Metal Refining, Smelting, Plating, Recycling o Residual Ash
What is S/S Treatment for Remediation? Involves mixing a binding/reaction agent(s) into contaminated media such as soil, sediment, sludge or industrial waste. S/S treatment protects human health and the environment by immobilizing hazardous constituents within treated material. Physical (solidification) and chemical (stabilization) changes to the treated material. Mobility Reduction Terms: Stabilisation (UK), Inertage (France), Immobilization (EU).
Efficient Use of Binders Matters Binders do matter! Most of the cost in a mass stabilization project comes from the binder, which represents about 50-70 % of the total project cost. Efficiencies (Cost Savings) are improved by: • Thorough mixing (mixing shear & energy) resulting in intimate contact of binder and subject material . • Introduction of binder at mixing point. • Locating and metering of binder to avoid under-dose and overdose. • Use of dry binders in wet materials to conserve drying capacity of binders.
Binding Agent Pricing ● Priced by transportation costs: − Industrial waste/byproducts, finely divided materials available on site, e.g. spent fullers earth, ash ● Priced per ton: − Common construction materials: ● portland cement, blended cements, Class C or F fly ash, GGBFS, lime. ● Priced per pound: − Specialized materials, sorptive, reactive, or compounding ● Carbons, organophilic clays, oxidizers, reducers
Bench-Scale to Full-Scale VS 25-100 RPM0 FT-LBS Torque Providing Mixing Energy & Shear Mixing SPOON FOLDING ACTION 25-100 RPM 12000 Nm (9000 ft-lb) torque per drum. Provides Mixing Energy and Shear Folding Mixing Action dependent on Operator’s “Stroke”
Canadian Forces Base Esquimalt, Victoria, BC
POST IN-SITU DRILLING PROGRAM TO IDENTIFY "KIDNEY" LEGEND LIMI T OF CONSTRUCTION (FENCED FOR SOIL CLASSIFICATION THROUGH EX-SITU SOIL SAMPLING FROM WORK PACKAGE 17A PHASE II) TEST PITS TO EST ABLISH BINDER RECIPE TRUCK ROUTE CONSTRUCTION H O A . R D ING FENCE (5') DRAINAGE FLOW (OVERLAND) e PROPOSED TE ST PIT 15 0 - - 3 J 0 r m MBillm I SCALE 1:5:>0 - - - - - COllTAMINATED SOIL HOl.DIHC CW.. · o· AREA PA';!;D ASPHALT (SLOPED TOWARDS EXCAVATION) DY2 50 OFflCf; 6mx12m COICRETE P R O C E S S NG AH I O REBAR EXTRACTION I : K I 17A P _ ' J J SCANSA OfnCE
Cove Fill Materials Blasted Bedrock Scrap Metal Shipyard Waste Welding Slag
Geo Technical & Environmental Leachable Heavy Metals Hydrocarbons PCBs
1 1 '
Harbour l l . £ u u 1 1 1 -:1 M < J I ' [ 1Mm kglmA3 kg m '3 5% 97% 5% 101% 62% 106% 103% 97" ){, 100% 99'}(, 11.; 3 y ; 1 x 1 Y"'1 yl I J Accept - Accept •6 ' - - -- - ' - - - - ' Set zero l evel Tank 1 level: Number Of Sa: ellites: 14 Machine heading: O" lncimalion- O "
Sample Spec,imen Diameter Length Identification Break Date Age (Days) (mm) (mm) load (N) 28 Crease A venue RYZUK GEOTECHNICAL V icloria, 8.C. VSZ 1S3 7A-C05 · .5 2 -J I· 5 1 2 3.0 ENGINEERING & MATERIALS TESTING 207 Tel: 250-475-3131 1 7A-C052 0.5 24-Jul-1 4 7 1 1.0 01.0 203.0 11 996 Fax: 250-475-3611 s 0 203.0 1 7A·COS2-1 .S 22-Jul-14 1 01. 1 4052 8012 mai1@ryzuk.com 17A-C052-1.S 24-Jul-1 4 7 1 00.5 203.0 1 5156 7933 Soilcrete Test Summary Report 1 7A·C052 2.5 22-Jul -1 4 1 00.0 203.0 5 9080 7854 Project No.: 8 · 613 4 25 1 7A·C052 2.5 24 Jul· 1 4 7 1 00.0 203.0 9288 7854 Project : In-Situ Soil Mixing · WP17A , CFB Esquimalt 17A-C057-0.S 22-Jul-14 6 1 00.0 203.0 7232 7854 Client: Allterra Construction 1 7A C057 0.5 23 Jul·1 4 7 1 00.5 203.0 8040 7933 Contact: Mr.Derek Killburn 1 7A C057 1 .S 22 Jul· 4 1 6 1 00.0 203.0 9040 7854 Emai I Fax No .: derek@allterraconstruct ion.ca 1 7A-C057-1.S 23-Jul-14 7 1 00.0 203.0 9204 7854 September 5, 2014 Date: 1 7A C057 2.5 22 Jul·1 4 6 1 00.5 203.0 6432 7933 1 7A-C057-2.5 23-Jul-1 4 7 1 01. 5 203.0 8752 8091 Copy to: Copy to: 17A-C063 · 0.S 1 8 -Jul-14 3 101.0 203.0 1 6440 8012 1 7A·C063 · 0.5 22 Jul-1 4 7 1 01. 5 203.0 27808 8091 1 7A·C063· 1 .0 1 8-Jul-14 3 1 01.0 203.0 1 0564 8012 Average 1 7A·C063· 1 .0 22-Jul-1 4 7 1 01. 5 203.0 1 7832 8091 Sample Specimen Diameter Length Corrected 1 7A·C063· 1 .5 1 8 Jul-1 4 3 1 01.0 203.0 9368 8012 Area (mm 2 Identification Break Date Age (Days) (mm) (mm) Load (N) ) Strength (kPa) 11-Jul·14 3 100.0 203.0 3820 78 17A C063-l.5 15·Jul·14 7 99.5 203.0 6304 77 80 17A-C068-0.5 5 10 0 .0 203.0 11-Jul-14 3 101.5 3860 203.0 75 17A-C068-0.5 8 9 9 .0 203.0 15·Jul·14 7 98.0 5504 203.0 9-Jul-14 101.5 80 17A-C068-0.5 5 203.0 14304 28 10 1.S 203.0 16-Jul-14 101.0 7 24568 80 203.0 17A·C068 2.0 28 Jul·14 5 100.0 203.0 7854 9-Jul-14 5 100.0 203.0 16652 2121 31-Jul-14 3680 8012 17A-C068-2.0 8 101.0 205.0 16-Jul-14 7 101.5 18704 8091 20-Aug-14 28 100.0 203.0 4600 7854 100.0 7854 5 10112 25-Jul-14 3 101.5 203.0 2948 8091 29-Jul -14 101.5 8091 7 203.0 5000 3 203.0 2376 25·Jul·14 101.5 3 203.0 4820 8091 1 1-Jul-14 7 29-Jul-14 101.5 8091 203.0 25-Jul-14 7 18-Jul-14 4 101.0 10820 203.0 22 Jul 14 8 100.0 14388 5 203.0 4 18-Jul-1 4 101.0 10480 203.0 7 80 1 7A-C080-0.S 22-Jul-14 8 1 01.0 203.0 1 8948 8-Jul-14 1 4 1 01. 0 203.0 1 5632 80 22-Jul-14 8 1 01.0 203.0 1 8744 8012 11lUl·1 4 3 1 01. 5 203.0 8420 8091 1 8 Jul 1 4 7 1 01. 0 203.0 1 3412 8012 11-Jul-14 3 1 01. 5 203. 0 1 8420 8091 2275 1 8-Jul-14 7 1 01. 0 203.0 33960 8012 4239 3
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