Comparisons (Specifications)
| CalClean | Standard S.V.E. | Pump & Treat |
|---|---|---|
| Truck-Mounted Mobile Systems | Fixed Based Systems (Few Mobile Systems) | Fixed Based Systems (Few Mobile Systems) |
| High Capacity 450 CFM Systems Can Extract 5-50 GPM Water | Typical System is 250 CFM But Cannot Extract Water | Typical System is 2 to 20 GPM But Cannot Extract Vapors |
| Can Extract & Destroy up to 130 pounds of Hydrocarbons per hour | Typical System can Destroy up to 40 pounds of Hydrocarbons per hour | Cannot Destroy Hydrocarbon Vapors |
| Can Extract up to 29″ Hg (394″ H2O) i.e. Large Radius of Influence, Less Extraction Wells Required for Site | Typically Extracts up to 10″ Hg (136″ H2O) i.e. Smaller Radius of Influence, More Wells Required, Greater Costs | Not Applicable For Vapors |
| Extract Vapor & Groundwater | Extract Vapor Only | Extract Groundwater Only |
| Can Lower Groundwater Table to Address Vadose, Capillary Fringe & Saturated Zones | Cannot Extract Groundwater | Can Only Remove Groundwater, No Vapor |
Comparisons ($$)
| CalClean | Standard S.V.E. | Pump & Treat |
|---|---|---|
| System Manned At All Times To Adjust Stinger Depths to Maximize Recovery | System Unmanned, Cannot Adjust Depths in Extraction Wells | System Unmanned, Cannot Adjust Depths In Extraction Wells |
| No Capital Cost Outlay | High Capital Cost | High Capital Cost |
| Closures Can Be Attained Earlier (possibly in less than 1 year) | Closures Typically Take 3 to 10 Years | Closures Typically Take 5 to 30 Years |
| No Trenching Needed | Trenching Required | Trenching Required |
| No Shutdown Of Station | Shutdown Station for 2 to 4 Weeks – Loss of earnings |
Shutdown Station for 2 to 4 Weeks – Loss of earnings |
| No Long Time Commitment Needed For Use At A Site | Long Term Commitment is Needed | Long Term Commitment is Needed |
| No Cost Of Decommissioning | High Cost Of Decommissioning And Loss Of Value Of System | High Cost Of Decommissioning And Loss Of Value Of System |
Comparisons (misc.)
| CalClean | Standard S.V.E. | Pump & Treat |
|---|---|---|
| Can Mobilize To A Site Within Hours Of Call. Can Attack Source Immediately | Typically Takes 9 to 15 Months To Install System – Allows Plume Size To Increase | Typically Takes 6 to 15 Months To Install System – Allows Plume Size To Increase |
| Can Startup At A Site Quickly | Takes Many Months Before Startup | Takes Many Months Before Startup |
| Can Pull Offsite When Concentrations Drop Off To Allow For Rebound | Cannot Pull Offsite since fixed | Cannot Pull Offsite since fixed |
| Can Adjust Number Of Days Of Operation To Maximize Recovery | Cannot Adjust Days Of Operation | Cannot Adjust Days Of Operation |
| Constant Onsite Monitoring Of Influent Vapor Concentrations | No Onsite Monitoring Of Influent Vapor Concentrations | Not Applicable |
| Occupies Space At Station Only During Onsite Operation | Occupies Full-Time Space On Small Station Property | Occupies Full-Time Space On Small Station Property |
| Low Noise Operation (Great For Residential Areas) | High Noise Systems (Complaints From Neighbors) | Low Noise |