How to: Groundwater Sampling for a shallow well

How to sample a shallow well for the general parameters that a number of our permitted facilities need.

For more information, see:
http://www.ecy.wa.gov/programs/wq/grndwtr/index.html

Category:

Education

Tags:

• Water quality
• water sampling

[89norcal]

dtw - total depth x .65 = casing volume for 4"

.16 for 2'

1.47 for 6"

[STuckerHSA]

@caifan200 It is required for you to go through HAZWOPER training for groundwater sampling so you know how to protect yourself from the Contaminant in the Groundwater and/or soil.

[Backyardmech1]

@caifan200 It's pretty typical to do HAZWOPER training before doing any type of this work. ;) Have fun doing the 40 hours. Bring snacks

[Sweep1001]

Great job on the improvised flow through cell. Personally I like the Hana 9828 multi parameter probe with it's 100 ml flow through cell. I normally do low-flow purging instead of 3 well volumes which is more concerned with minimum draw down.

Also, was that a 4 inch diameter well? You may want to check your math for well volumes. I take the # of feet and X by 0.041 then multiply the diameter of the well squared.

Example: 4 in well with 7.25 ft water column, 7.25 X 0.041 X 4^2 = 4.76 gal.

[caifan200]

Do you have to go trough the hazwoper training before you allowed to perform water sampling?

[NielThomas16]

Ive seen manholes that say observation well, is that what that is?

[NielThomas16]

Thank You!