Page 198 - California Stormwater Workshop Handouts

ATTACHMENT H

SAMPLE COLLECTION AND HANDLING INSTRUCTIONS

7. The Discharger can only use automatic sampling device to sample parameters
that the device is designed to. For pH, Dischargers can only use automatic
sampling devices with the ability to read pH within 15 minutes of sample
collection.

8. The Discharger is prohibited from using an automatic sampling device for Oil and
Grease, unless the automatic sampling device is specifically designed to sample
for Oil and Grease.

9. To prevent contamination, do not touch inside of sample container or cap or put
anything into the sample containers before collecting storm water samples.

10. Do not overfill sample containers. Overfilling can change the analytical results.

11. Tightly screw on the cap of each sample container without stripping the threads
of the cap.

12. Complete and attach a label for each sample container. The label shall identify
the date and time of sample collection, the person taking the sample, and the
sample collection location or discharge point. The label should also identify any
sample containers that have been preserved.

13. Carefully pack sample containers into an ice chest or refrigerator to prevent
breakage and maintain temperature during shipment. Remember to place frozen
ice packs into shipping containers. Samples should be kept as close to 4 degrees
Celsius (39 degrees Fahrenheit) as possible until arriving to the laboratory. Do
not freeze samples.

14. Complete a Chain of Custody form for each set of samples. The Chain of
Custody form shall include the Discharger’s name, address, and phone number,
identification of each sample container and sample collection point, person
collecting the samples, the date and time each sample container was filled, and
the analysis that is required for each sample container.

15. Upon shipping/delivering the sample containers, obtain both the signatures of the
persons relinquishing and receiving the sample containers.

16. Dischargers shall designate and train personnel to collect, maintain, and ship
samples in accordance with the sample protocols and laboratory practices.

17. Refer to Table 1 in the General Permit for test methods, detection limits, and
reporting units.

18. All sampling and sample preservation shall be in accordance with 40 Code of
Federal Regulations part 136 and the current edition of “Standard Methods for

Order 2014-0057-DWQ 2