Search found 7 matches

by CHDenvironmental
Thu Sep 06, 2018 11:00 pm
Forum: GPR Data
Topic: Archaeological building remains.1
Replies: 2
Views: 5307

Re: Archaeological building remains.1

Thanks for sharing imagery! What were the soil conditions at the site?
by CHDenvironmental
Fri Oct 13, 2017 1:49 pm
Forum: From the trenches
Topic: Duplicate Hyperbolae (Repeated Signal) - when detecting pipe
Replies: 0
Views: 9506

Duplicate Hyperbolae (Repeated Signal) - when detecting pipe

Hello, I've recently considered a short discussion on repeated signal when detecting pipe. Clearly, metal pipes create an unmistakable "ringer" down the entire GPR cross-section. The question I raise here is related to pipes that are non-metallic and are water filled, which are also known to create ...
by CHDenvironmental
Mon Sep 11, 2017 1:40 pm
Forum: From the trenches
Topic: GPR and Soil Surveys
Replies: 2
Views: 5152

Re: GPR and Soil Surveys

Danne,
Thanks again. I have some research to do, to be able to answer those questions. I will revisit this in the future.
Take Care,
Chris
by CHDenvironmental
Mon Sep 11, 2017 1:37 pm
Forum: From the trenches
Topic: Grid Scan Slices and UST Systems
Replies: 4
Views: 5826

Re: Grid Scan Slices and UST Systems

Danne,
That's a great suggestion. Thanks!
CHD
by CHDenvironmental
Thu Aug 31, 2017 7:52 pm
Forum: From the trenches
Topic: GPR and Soil Surveys
Replies: 2
Views: 5152

GPR and Soil Surveys

Hello, I mostly find pipes and USTs with my GPR. I'm working to graduate to more intricate studies. Recently, I joined a colleague who is a soil scientist on one of his projects. He was digging large test pits (2 ft wide X 8 ft deep X 14 ft long) and profiling the soil horizons. He allowed me to col...
by CHDenvironmental
Thu Aug 31, 2017 7:39 pm
Forum: From the trenches
Topic: Grid Scan Slices and UST Systems
Replies: 4
Views: 5826

Re: Grid Scan Slices and UST Systems

BR, I appreciate your response. It is hard to assess the shallower slice in middle of outlines because there are several metal lids at the driving surface over top of the UST. Back to the point you make, if the tank is metal, the signal cannot penetrate metal. So if the top of the tank is say 2 ft d...
by CHDenvironmental
Thu Aug 10, 2017 3:17 pm
Forum: From the trenches
Topic: Grid Scan Slices and UST Systems
Replies: 4
Views: 5826

Grid Scan Slices and UST Systems

Hello, My name is Chris. Recently, I conducted grid scanning at an old petro-station in North Carolina, USA. The objective was to locate the USTs and associated fuel piping. My LMX200 worked quite well to complete the task. However, while processing/interpreting the data in the field, I was curious ...