Odor Control for VOC Excavation
DUST AND VAPOR CONTROL STRATEGY - OVERVIEW
KUMA Corporation will provide dust and vapor mitigation services using three levels of engineering control and intensity - Control Level 1 (least control), Control Level 2 (more control), and Control Level 3 (highest amount of control). The control Level implemented will be determined based on criteria specified in the project’s Dust and Vapor Control Plan (DVCP). With hand held devices reporting real-time data, adjustments can be made continuously throughout the workday to best meet changing site demands and conditions.
KUMA has specified minimum components (equipment, products and procedures) for each Control Level, as described below. It should be noted that within each Control Level, there is a range of intensity that can be adjusted without increasing or decreasing the Control Level designation. For instance, while Point Source ODEX Spray is listed as part of Control Level 1, the duration of spray, and the quantity of solution dispersed can be varied lower or higher as real-time field data indicates. In this manner, transitions between Control Levels are gradual, rather than stepped. This closely reflects actual in-field implementation of dust and vapor control strategies, where changing site conditions may warrant minor modifications.
KUMA Corporation will provide dust and vapor mitigation services using three levels of engineering control and intensity - Control Level 1 (least control), Control Level 2 (more control), and Control Level 3 (highest amount of control). The control Level implemented will be determined based on criteria specified in the project’s Dust and Vapor Control Plan (DVCP). With hand held devices reporting real-time data, adjustments can be made continuously throughout the workday to best meet changing site demands and conditions.
KUMA has specified minimum components (equipment, products and procedures) for each Control Level, as described below. It should be noted that within each Control Level, there is a range of intensity that can be adjusted without increasing or decreasing the Control Level designation. For instance, while Point Source ODEX Spray is listed as part of Control Level 1, the duration of spray, and the quantity of solution dispersed can be varied lower or higher as real-time field data indicates. In this manner, transitions between Control Levels are gradual, rather than stepped. This closely reflects actual in-field implementation of dust and vapor control strategies, where changing site conditions may warrant minor modifications.
Control Level 1: Mild or No Vapors and/or Dust Experienced or Anticipated
Control Level 1 is the minimal level of control suggested when mild or no dust or vapors are experienced or anticipated. Level 1 is used when vapor mitigation may be necessary, but dust and vapor intensity is either known or thought to be very low. Two Dust and Vapor Control (DVC) Operators will be assigned to utilize needed equipment. The DVC Operators will work as a team to provide complete vapor and dust mitigation and project continuity. Both DVC Operators will be cross trained, with each fully capable of running the equipment. Control Level 1 consists of the following minimum components:
Control Level 1 is the minimal level of control suggested when mild or no dust or vapors are experienced or anticipated. Level 1 is used when vapor mitigation may be necessary, but dust and vapor intensity is either known or thought to be very low. Two Dust and Vapor Control (DVC) Operators will be assigned to utilize needed equipment. The DVC Operators will work as a team to provide complete vapor and dust mitigation and project continuity. Both DVC Operators will be cross trained, with each fully capable of running the equipment. Control Level 1 consists of the following minimum components:
Engineering Controls:
- Point Source ODEX Spray. ODEX Odor Mitigation Agent will be sprayed from hand-held spray guns directly at the odor source. The spray guns create a foggy mist above and around the vaporous materials
- .HydroSeal. HydroSeal capping material will be spray-applied, sealing exposed materials and containing dust and vapors as necessary
- T-200 Dust Suppressant. T-200 is an organic, biodegradable product effective in suppressing dust and mild odors. It is spray applied and forms a crusty surface when dry.
- Perimeter Misting. High-pressure mist lines dispersing ODEX Odor Mitigation Agent will be installed around the work area perimeter. The mist lines be attached to, and suspended from poles 20 feet high. The perimeter mist lines can be used to generate a fog of odor neutralizing mist, mitigating effects to potential receptors.
- Mobile Misting Wall. High-pressure mist lines dispersing ODEX Odor Mitigation Agent will be attached to a 20 foot high fence section supported by K-rail. This mobile misting wall will be used (and moved) as necessary to block and neutralize fugitive dust and vapors when wind direction is toward the most sensitive receptors.
Equipment:
- HydroSealer, 1100 gal, trailer-mounted, diesel, low ground pressure [HS-1100DT]
- Mobile Emissions Control Module, 28 gpm electric w/o generator [MEC-28E]
- Perimeter Mist Module, 15 gpm w/ Smart Relay [PM-15ES]
- Perimeter Atomization Line with nozzles at 4 foot on center [PAL-4]
- Mobile Misting Wall, spray nozzles located throughout face and sides.
Products:
- ODEX Zap-TPH Odor Mitigation Agent (solution to neutralize vapors and suppress dust).
- HydroSeal (Type I) to cap exposed materials.
- T-200 for control of dust and mild vapors.
Personnel:
- 1 DVC Operator for Point Source ODEX Spray
- 1 DVC Operator for HydroSeal
- Laborer, as needed to assist DVC Operators
- Heavy Equipment Operator, as necessary to position Mobile Misting Wall
Typical Daily Operation:
- Start-up. Approximately 30 minutes prior to the scheduled start of excavation, DVC Operators will prepare a batch of HydroSeal. DVC Operators will fill, start and test the point source spray system and all spray guns, and start the perimeter mist system. ODEX levels will be checked and drums refilled/ replaced as necessary.
- Project Work. When excavation begins, the DVC Operator assigned to Point Source Spray will be in position to spray the excavation work area with a fine cloud mist of ODEX solution. In compliance with the DVCP, HydroSeal will be applied as necessary to the excavation and resulting stockpile.
- Quality Control. Throughout the day, in-field monitoring results will be checked against levels specified in the DVCP. Based on the data, DVC Operators will increase or decrease dust and vapor control intensity either within Control Level 1, or ratcheting up to Control Level 2.
- End of Day. At the close of each day’s operations, DVC Operators will cover all exposed sources of dust and vapors with HydroSeal. In anticipation of the next day’s work, the Mobile Misting Wall may be relocated to a more advantageous spot.
Control Level 2: Moderate Vapors and/or Dust Experienced or Anticipated
When excavating and handling particularly dusty, vaporous or odorous materials, Control Level 2 may be appropriate.
Control Level 2 consists of all the components of Control Level 1, plus additional HydroSeal.
When excavating and handling particularly dusty, vaporous or odorous materials, Control Level 2 may be appropriate.
Control Level 2 consists of all the components of Control Level 1, plus additional HydroSeal.
Engineering Controls:
- Point Source ODEX Spray. Same strategy as Control Level 1, PLUS: HydroSeal. Control Level 1 strategy, PLUS: Utilize more ODEX Odor Mitigation solution for air scrubbing. Put additional spray guns, Operator(s), and/or machine(s) to work:
- HydroSeal. Control Level 1 strategy, PLUS: Application of additional HydroSeal directly to the working area, possibly as each bucket-load of material is removed, and to the location where it is placed. This additional application of capping material further inhibits the release of dust, vapors and odors. Apply HydroSeal cap to each completed load of material when the transport truck is filled.
- T-200 Dust Suppressant. Same strategy as Control Level 1.
- Perimeter Misting. Same strategy as Control Level 1.
- Mobile Misting Wall. Same strategy as Control Level 1.
Equipment:
- Same Equipment as Control Level 1, PLUS
- HydroSealer, 3000 gal, trailer-mounted, diesel [HS-3000DT]
- 2nd Unit - Mobile Emissions Control Module, 28 gpm electric w/o generator [MEC-28E]
Products:
- Same as Control Level 1, but increased quantity of ODEX, HydroSeal, and T-200
Personnel:
- Same as Control Level 1, PLUS:
- 3rd DVC Operator for 2nd Point Source ODEX Spray.
Typical Daily Operation:
- Start-up. Approximately 30 minutes prior to the scheduled start of excavation, DVC Operators will prepare a batch of HydroSeal for each machine – total 4100 gallons material. DVC Operators will fill, start, and test both point source spray systems and all spray guns, and start the perimeter mist system. ODEX levels will be checked and drums refilled/ replaced as necessary.
- Project Work. When excavation begins, the DVC Operator assigned to Point Source Spray will be in position to spray the excavation work area with a fine cloud mist of ODEX solution. In compliance with the DVCP, HydroSeal will be applied as necessary to the excavation, removed material, resulting stockpile(s), and loaded trucks.
- Quality Control. Throughout the day, in-field monitoring results will be checked against levels specified in the
DVCP. Based on the data, DVC Operators will increase or decrease dust and vapor control intensity either
within Control Level 2, possibly scale back to Control Level 1, or ratchet up to Control Level 3. - End of Day. At the close of each day’s operations, DVC Operators will cover all exposed sources of dust and vapors with HydroSeal, including excavation areas, stockpiles, loaded and partially loaded trucks. In anticipation of the next day’s work, the Mobile Misting Wall may be relocated to a more advantageous spot.
Control Level 3: High Levels of Vapor, Odor, and/or Dust Experienced or Anticipated
Control Level 3 is implemented when emissions from the waste material is at its anticipated worst.
When Control Level 3 is implemented, personnel demand will increase, as DVC Operators will be needed to man additional pieces of equipment simultaneously controlling the worst dust and vapor conditions. All components of Control Level 2 are included in Control Level 3, plus additional controls as described.
Control Level 3 is implemented when emissions from the waste material is at its anticipated worst.
When Control Level 3 is implemented, personnel demand will increase, as DVC Operators will be needed to man additional pieces of equipment simultaneously controlling the worst dust and vapor conditions. All components of Control Level 2 are included in Control Level 3, plus additional controls as described.
Engineering Controls:
- Point Source ODEX Spray. Same strategy as Control Level 2.
- HydroSeal. Control Level 2 strategy, PLUS:Pump a slurry of HydroSeal into the excavation area to
continuously seal potentially vaporous, odorous material as it is being removed. - T-200 Dust Suppressant. Same strategy as Control Level 2.
- Perimeter Misting. Same strategy as Control Level 2.
- Mobile Misting Wall. Same strategy as Control Level 2.
Equipment:
- Same Equipment as Control Level 2.
Products:
- Same as Control Level 2, but increased quantity of HydroSeal.
Personnel:
- Same as Control Level 2, PLUS:
- 4th DVC Operator for 2ndHydroSealer.
Typical Daily Operation:
- Start-up. Approximately 30 minutes prior to the scheduled start of excavation, DVC Operators will prepare a batch of HydroSeal for each machine – total 4100 gallons material. DVC Operators will fill, start, and test both point source spray systems and all spray guns, and start the perimeter mist system. ODEX levels will be checked and drums refilled/ replaced as necessary.
- Project Work. Just before work begins, DVC Operators will pump a slurry of HydroSeal into the excavation area.
Material will be removed by the excavator, digging through the slurry. One DVC Operator will continuously supply the excavation area with HydroSeal slurry. Two DVC Operators assigned to Point Source Spray will be in position to spray the excavation work area with a fine cloud mist of ODEX solution. A fourth DVC Operator will apply HydroSeal to the stockpile(s) and loaded trucks. - Quality Control. Throughout the day, in-field monitoring results will be checked against levels specified in the
DVCP. Based on the data, DVC Operators will increase or decrease dust and vapor control intensity within
Control Level 3, or possibly scale back to Control Level 2. (If compliance with the DVCP is not achieved when the highest intensity effort within Control Level 3 is implemented, field work should be halted until an alternate method of material handling can be initiated.) - End of Day. At the close of each day’s operations, DVC Operators will cover all exposed sources of dust and vapors with HydroSeal, including excavation areas, stockpiles, loaded and partially loaded trucks. In anticipation of the next day’s work, the Mobile Misting Wall may be relocated to a more advantageous spot.