ALWAYS CALL US 24 HOURS IN ADVANCE OF SAMPLING TO MAKE SURE WE CAN ACCEPT YOUR SAMPLE!

We always make every effort to analyze your samples within the listed holding times.  However, we cannot guarantee analysis within short holding time limits without at least 24 hours notice.

Samples received beyond their hold times will only be analyzed with the express permission of the client, and data will be flagged as having been run beyond hold-time.

8-hour holding time

Wastewater -

E. coli
Fecal Coliform

Always call us at least 24 hours in advance of sampling and deliver samples as soon as possible.
SORRY, WE CANNOT ACCEPT BACTERIA SAMPLES ON FRIDAYS!

24-hour holding time

BOD5
CBOD5
Always call us at least 24 hours in advance of sampling and deliver samples as soon as possible. BOD5 samples may be taken Tuesday through Friday.*  If you are unable to deliver samples to the lab the same day they are sampled, please sample as late in the day as possible (after 2pm) and ship samples to us for next-day-AM delivery.

* Tuesday samples should be taken as late in the day as possible since they will not actually be analyzed until Wednesday. Friday samples must be received at the lab by 3:00 pm unless prior arrangement is made.

 

30-hour holding time

Drinking Water -

Total Coliform
E. coli

Always call us at least 24 hours in advance of sampling and deliver samples as soon as possible.

SORRY, WE CANNOT ACCEPT BACTERIA SAMPLES ON FRIDAYS!

 

48-hour holding time

Orthophosphate  

Nitrate

Nitrite

Always call us at least 24 hours in advance of sampling and deliver samples as soon as possible.  

We routinely analyze for nitrate and nitrite on Wednesday and Thursday mornings.  Therefore, it is ideal to sample Monday through Wednesday, if possible.  Please call ahead and we will make every effort to work within your sampling schedule.

FRIDAY SAMPLES are accepted only by prior arrangement.

Reference:

Environmental Protection Agency, 40 CFR, Part 136, Table II, Required Containers, Preservation Techniques and Holding Times.

Definition: "Holding Time":

The maximum amount of time that may pass between taking a sample and starting analysis on it.

What's the big deal?

After the hold time passes, the sample starts to degrade and lab results are no longer valid for compliance purposes. State auditors will notice!

 

Click here to Download "Shorthold and BOD Calendar 2019" (2 pg. pdf)