Industrial Stormwater Sampling in 8 Steps

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Nov 21

*Industrial stormwater sampling can seem daunting. We break it down in 8 easy steps (Stormwater.Pro).*

Stormwater sampling is an essential part of industrial facility operations. It helps to monitor and control the quality of stormwater discharges, which can have a significant impact on the environment, and keep your facility in compliance with stormwater regulations. In this article, we will discuss the general steps you can follow to collect stormwater samples.

Step 1: Review Your Permit’s Stormwater Sampling Requirements

Before you start collecting stormwater samples, it is essential to review your permit’s stormwater sampling requirements and your facility Stormwater Pollution Prevention Plan (SWPPP). This will help you understand the frequency, location, and parameters of the samples you need to collect. Every jurisdiction is different and each facility is unique, the professionals at Stormwater.Pro can help you ensure your samples are collected in accordance with all the requirements.

Step 2: Plan Ahead and Designate an Alternate Sample Collector in Case of Emergency

It is always a good idea to plan ahead and designate an alternate sample collector in case of an emergency. This will ensure that you can collect the samples on time, even if the primary sample collector is unavailable.

Step 3: Assemble the Proper Equipment

Assembling the proper equipment is crucial for collecting accurate stormwater samples. You will need sampling bottles, labels, and coolers to store the samples.

Step 4: Select the Best Sampling Location

Selecting the best sampling location is critical for collecting representative samples. The sampling location should be located downstream of the discharge point and should be representative of the discharge.

Step 5: Collect the Sample

To collect the sample, fill the bottle from the vertical and horizontal centers of the channel, facing the mouth of the bottle upstream. Avoid floating debris and stirring bottom sediment.

Step 6: Label the Container

Label the container before collection to reduce the risk of sample mix-ups. The label should include the date, time, location, and other relevant information.

Step 7: Pack the Sampling Kit

Pack the sampling kit with as much ice as possible (1/3 of cooler minimum) to keep the sample cool. This will help to preserve the integrity of the sample during transportation.

Step 8: Ship the Samples

Ship the samples overnight and make sure they arrive during lab operating days. This will ensure that the samples are analyzed promptly.

For more detailed instructions, you can check out this guide by the U.S. Environmental Protection Agency on industrial stormwater monitoring and sampling. It provides a how-to primer for industrial facility operators on how to conduct visual assessments and analytical monitoring of stormwater discharges. The guide also includes a list of tables and figures, and a sample monitoring form.

If you are looking for professional assistance with your stormwater compliance, drop us a quick message or book a free consultation.