Recyclers News Press
Page 25
Sampling Made Easy
Collect a grab sample and a composite sample for
each outfall point or a representative grab and
composite sample if all discharge is identical.
1) A grab sample is a one-time sample that repre-
sents the discharge in the beginning of the rain-
fall event. The grab sample must be taken in
the first hour of the discharge. The laboratory
recommends taking about two quarts to ensure
enough water to perform all tests is available.
2) A time-weighted composite sample is taken at
timed intervals in equal amounts. The compos-
ite sample is taken as a combination of (at least
three) small samples (called aliquots) taken
throughout the duration of the discharge, with
each small sample being separated by at least
15 minutes. The laboratory recommends tak-
ing 2 pints at each sample so that the total
amount of the composite sample is about two
quarts to ensure enough water to perform all
tests is available.
Both sets of samples, the grab and the composite,
must be tested for five parameters:
five day biochemical oxygen demand (BOD);
chemical oxygen demand (COD);
total suspended solids (TSS);
total Kjeldahl nitrogen (TKN);
total phosphorus.
The grab sample must be tested for two additional
parameters:
oil and grease;
pH.
Iowa Automotive Recyclers
Storm Water Sampling
LAB KIT
Every Iowa automotive salvage facility with more than
250 “junk” vehicles in the yard is required to conduct an-
nual storm water runoff sampling. The I-CARE program
has a discount at TestAmerica and a standard testing
protocol to guarantee the appropriate parameters are
tested per the Iowa Department of Natural Resources
(DNR) storm water requirements.
Download the sampling procedures at:
Sampling is a regulatory requirement!
Contact Sue Schauls at
r fax
this form to 319-233-7970 to order a sampling kit.
Laboratory testing authorized by:
Name:
________________________________
Company: _____________________________________
Physical Address: ______________________________
Mailing Address: ________________________________
City, State Zip: _________________________________
Phone #: ________________________________
Email: ________________________________
Signature: _____________________________
Sampling should be conducted after spring thaw and be-
fore the first freeze. April through October is best.
Make check payable and mail to:
Sue Schauls Consulting
Environmental Standards
Iowa—Certified Auto Recyclers Environmental Program
I-CARE
Laboratory fee
Sample kit & results analysis is $320
