Determine if RCDM samplers recover same chemical parameters as PDB samplers and LF.

Identify chemical parameters recovered by RCDM samplers, PDB samplers, and LF.

Chemical parameters detected in PDB and LF are the same detected by RCDM samplers.

Criteria met

Determine if RCDM membrane integrity is maintained over the course of equilibration.

Observe sampler membranes for perforations.

No perforations noted during the course of the test.

Criteria met

Determine if RCDM samplers recover the same  concentrations as LF.

Measure inorganic and organic compound concentrations recovered by RCDM samplers and LF.

NSD at p<0.05 between chemical concentrations recovered by the RCDM samplers and LF.

Criteria met for 96% of all chemicals tested

Determine if RCDM samplers recover the same&nbsp; concentrations as PDB samplers.

Measure VOC concentrations recovered by RCDM samplers and PDB samplers.

NSD at p<0.05 between VOC concentrations recovered by the RCDM sampler and the PDB sampler.

Criteria met for 100% of all chemicals tested

Determine if RCDM samplers can sample low concentrations.

Measure concentrations of chemicals near detection limits.

Concentrations within 2-5 times the detection limit can be&nbsp; detected.

Criteria met

Determine if RCDM samplers take significantly less field time to collect samples than LF.

Measure time needed to collect samples using RCDM samplers and LF.

Comparison of field time required to sample RCDM samplers versus LF should be 5 times shorter.

Criteria met