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Appendix III
Alternative Ground Water
Sampling Techniques Guide (July 1994)
ALTERNATIVE GROUND WATER
SAMPLING TECHNIQUES
MATRIX SUMMARY
| Tool
| Construction
| Floating Product
Thickness Detection |
Groundwater
Flow Determination |
Depth Limits |
Sample Confined
Aquifer |
Vertical Profiling |
Installation
Dutration |
Placement Method |
Purge Required |
Sampling Method |
| Screened Auger |
CS |
Yes |
Estimate |
150' |
Yes (a) |
Yes |
less than 48 hrs |
DR |
Yes |
B,I,P,E |
| Miniature Drive Point |
SS, PTFE |
No |
No |
40' |
No |
No |
less than 48 hrs |
E/Hy, H |
No |
P,E |
| Well Point |
SS, CS |
Yes |
Yes(b) |
150' |
Yes (a) |
Yes |
less than 48 hrs(c) |
DR, E/HY, H |
Yes |
B,I,P,E |
| Passively Placed Narrow Diameter Points |
SS, PVC |
Yes |
Estimate |
10' |
No |
No |
less than 48 hrs |
E/HY, H |
Yes |
B,I,P,E |
| Small Diameter Direct Push Points |
SS, PVC |
Yes
(Slotted points only) |
Estimate |
80' |
No |
Yes(d) |
less than 48 hrs |
E/HY |
Yes
(Slotted points only) |
B,I,P,E |
| Hydropunch Direct Push Sampler
| SS, PVC
| Yes
(HP-II only) |
Estimate |
250' |
Yes(a) |
Yes |
less than 48 hrs |
DR |
No |
B,I,P,E |
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(a) Provided intermediate casing
is used to isolate unconfined aquifer.
(b) If permanent installation. If
not, then only an estimate.
(c) Longer installations are permitted
however, installation must follow monitor well installation
specifications and permit requirements.
(d) Only using blank casing with
sealed point.
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CS - Carbon Steel
SS - Stainless Steel
DR - Drill Rig
E/HY - Electric or Hydraulic
H - Hand
B - Bailer
I - Inertial Pump
P - Peristaltic Pump
E - Evacuation Chamber
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