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Baseline Sampling
Simple Baseline sampling can help determine the feasibility of aerobic bioremediation.
The first step is to determine if aerobic bioremediation will work at your site or if the site needs to be supplemented to optimize results. Collecting baseline parameter readings including pH, dissolved oxygen, redox potential and temperature will give a good general picture of the subsurface environment.
The table below lists the effective and optimum range for each parameter for aerobic bioremediation.
| Parameter |
Effective Range |
Optimum Range |
| pH |
5.0-9.0 |
6.5-7.5 |
| Temperature |
55-95°F |
65-75°F |
| Salinity |
0-5% |
< 5% |
| Dissolved Oxygen |
>1 ppm |
2.5-8ppm |
| Redox |
> -200eh |
> 0eh |
Additional useful information includes microbial plate counts (aerobic), nitrate and phosphate. Additional nitrate and phosphate is not required when using CL-out® or Petrox®, but monitoring these nutrients can give additional useful information during the treatment.
Remember that the treatment is highly dependent on the subsurface environment, so monitoring for parameters, such as pH, dissolved oxygen, redox potential, microbial plate counts, temperature, nitrate and phosphate, before and during the treatment will provide enough information to effectively evaluate and/or adjust the treatment process, if necessary.
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