By Genesis Cruz | Boyle Heights Beat

This story first appeared on The LA Local.

Following the Logistics warehouse fire in Boyle Heights, many residents have expressed concerns about contaminants from smoke and ash settling into the soil. 

The Contaminant Level Evaluation and Analysis for Neighborhoods (CLEAN) project at USC is offering free soil testing for Boyle Heights and East L.A. residents. 

CLEAN is a rapid response soil testing program from the USC Department of Earth Sciences and Public Exchange developed by USC faculty, students and staff to assist local communities impacted by fires in L.A. County.

Residents can collect soil samples and drop them off at Boyle Heights City Hall for CLEAN to collect. 

Below is a step-by-step guide.

How to collect your sample: 

1. Review USC’s CLEAN project guide
2. Submit this survey– Your sample ID will be provided upon completing the survey. Make sure to save your ID as this is how the CLEAN team keeps track of your sample and provides results to you. 
3. Before getting started, gather your materials and protective equipment. (ADD points)
   
   1. Disposable gloves and an N95 or KN95 facemask
   2. Plastic spoon or shovel
   3. Ziploc bags (2 per composite samples)
   4. Permanent marker 
   5. Masking tape (for bag label)
   6. 9-digit sample ID code (from your survey)
4. Select your sampling zones
   
   1. Your sampling zones are where you will be collecting the soil from. Your zones can be your front or back yard, garden, etc. The picture on page four of the guide shows the different zones in a home and though your home may not have all zones, what’s important is that you understand what zones you’re collecting from and labeling them accordingly.
5. Once you’re wearing your protective gear and have your equipment, you are now ready to collect the sample.
   
   1. Collect two spoonfuls of soil for 2-5 different spots within a single zone
   2. Drop all spoonfuls from the zone into one Ziploc bag. By the end of collecting, the bag should have about a cup size of soil in it.
   3. Seal your Ziploc bag and for extra protection, put it over another Ziploc bag. This bag will now contain the zone’s composite sample. 
   4. Then repeat for every other zone you want to test. You should have one composite sample per zone you test. (e.g. one for the garden, one for the front yard, etc.)
6. Using a permanent marker, label each Ziploc bag with your unique sample ID and the zone name either on tape or directly on the bag. 
7. Then you repeat steps 5 and 6 for each zone you are testing. 

After collection 

Once you have finished collecting your samples, make sure to wash your hands. If you suspect your soil to be contaminated, CLEAN suggests limiting access to that area, wiping or taking shoes off before entering your home, and preventing children from playing in bare soil.  

CLEAN will test all samples for lead and some select samples will be tested for Arsenic, Chromium(VI), and Mercury. Testing for lead can take up to four weeks, while tests for other materials may take longer.

Where to submit your sample

After collecting and labeling your soil samples, you can submit them using one of the following methods:

Option 1: Drop Off Your Sample

Option 2: Mail Your Sample

Who to contact: 

If you have any questions or concerns, contact cleanproject@usc.edu

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