RemScan. Real-Time Measurement of TPH in Soil

Transcription

1 RemScan Real-Time Measurement of TPH in Soil

2 Presentation Outline Real-Time Data What is RemScan? Application Benefits Case Studies

3 Demand for Real-Time Data More data, increased confidence Real-time, smarter decisions Accelerated project closure, less cost Plays an integral role in: US EPA TRIAD program Green remediation NEPM guidelines contaminated sites

4 Handheld Soil Screening Tools Tool Technology Analytes XRF X-Ray fluorescence Heavy metals PID Photo-ionisation Volatile organics RemScan Infrared Petroleum hydrocarbons

5 What is RemScan? The world s first handheld instrument for the direct measurement of TPH in soil User simply pulls the trigger for a 15 second reading of TPH (C 10 -C 36 ) in mg/kg

6 Key Features Rugged, reliable instrument Easy to use caps for self-calibration Minimal sample preparation direct infrared Simple trigger operation and flexible PDA Full day of battery life

7 The RemScan Advantage NATA Lab Analysis RemScan 5-10 day turnaround Real-time results (15 sec) Cost $70+ per sample Limited data set Delayed actions Nil incremental cost More data more certainty Real-time decisions

8 The RemScan Advantage (cont.) Other Field Methods Hazardous chemicals Clumsy equipment Destructive User licence required RemScan No chemicals Handheld, portable Non-destructive No user licence required

9 Accuracy Specifications Designed as a screening tool (same as PID, XRF) Not intended to replace laboratory analysis Well-defined sampling protocol for validation against laboratory data TPH (C 10 -C 36 ) Typical Relative Error 10,000 mg/kg 6% 2,500 mg/kg 9% 1,000 mg/kg 16%

10 Application 1: Bioremediation Real-time management of soil loading More efficient rotation of space Eliminates non-essential laboratory analysis Better process management

11 Application 2: Site Assessment Collect more data for increased confidence Intelligent sampling plans Reduce risk of missing contamination Tighter delineation lower clean-up costs

12 Application 3: Spill Response Rapid delineation and characterisation More precise excavation Same day clean-up validation More effective resource management

13 Application 4: Validation Works More precise earthworks (including chasing ) Avoid over excavation reduce disposal costs Eliminate the need to return to site Increase confidence for same day closure

14 Application 5: Exploration On-the-spot core analysis Allows selection of cores to be sent for analysis Distinguish plant from petroleum hydrocarbons Double up as a spill response tool

15 Case Study 1: Pit Validation Ground-mounted transformer removed Oil contamination in footings (>100,000 mg/kg) Soil excavated until pit declared clean using RemScan (target <1,000 mg/kg)

16 Case Study 1: Pit Validation (cont.) Samples collected from pit sent for NATAaccredited laboratory analysis 1 week later lab results showed that all samples had <1,000 mg/kg TPH eliminates the guesswork of trying to estimate contamination by staining and smell remobilisation can cost thousands of dollars -Enviropacific Services

17 TPH (mg/kg) as measured by RemScan Case Study 1: Pit Validation (cont.) 40,000 35,000 30,000 25,000 20,000 15,000 10,000 5,000 0 TPH (C 10 -C 36 ) concentration of soil samples from a transformer excavation pit: RemScan versus laboratory R² = ,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 TPH (mg/kg) as measured by NATA accredited laboratory

18 Case Study 2: Oil Spill Large fire at a waste oil recycling factory 100,000 L oil washed into stormwater culvert Short clean-up window before torrential rain RemScan used daily to validate soil excavation

19 Case Study 2: Oil Spill (cont.) Accredited lab analysis confirmed samples were <1,000 mg/kg TPH as predicted by RemScan RemScan allowed continuous excavation

20 RemScan Analysis (TPH C10-C36 mg/kg) Case Study 3: Land Farm Land Farm - Soil R² = Lab Analysis (TPH C10-C36 mg/kg)

21 RemScan Analysis (TPH C10-C36 mg/kg) Case Study 3: Land Farm (cont.) Land Farm - Sludge R² = Lab Analysis (TPH C10-C36 mg/kg)

22 Case Study 5: Carbonates

23 RemScan