LaSalle Resident Letter to IEPA Letter about Carus Chemical Fire

To Whom It May Concern:

As a resident of La Salle, IL and as a homeowner affected by the fallout from the Carus Chemical LLC. Fire that occurred on January 11, 2023, I have several concerns that lead me to contact you today. Please understand that I have been working through the process, as are the other residents, and feel that as of writing this there are some concerns that I feel have not been addressed properly and I would like to see them looked into.

Allow me to return to my experience starting from the day of the fire through today as I feel that is the only way to fully paint the picture. The day of the fire my wife was at work in Ottawa, IL and I had dropped both of my children off at school. I myself left early to go to a doctors appointment in Oglesby, IL that morning. I was in my appointment when I received several urgent messages from friends concerning the fire. Despite being on the list for the city of La Salle’s contact hotline to allow community members to know of any important information, I was not notified and, therefore, unaware of what had occurred. Once leaving the office I was able to visibly see the large, black clouds to the North where the fire was happening.

Upon rushing home I found several streets surrounding the Carus Chemical LLC building starting to be closed down between Route 6 and my home,. I was able to get to my home (two blocks North of the plant) to find no obvious particles (again no information was relayed as to what to look for) barring a “freckled” appearance to my porch railing.

The smell outside can only be described as an open car battery running through a car wash, a strange combination of chemical and corrosion. Finding no obvious large material such as building material (steel, wood, etc.) I decided that I still needed to run my errands. I had wrongfully assumed that if there were any health concerns I would have been notified. I made my way to my children’s school as I was contacted by my son that they were potentially sending children home. The school informed me at that time they were in fact not intending to do so. I continued my errands as normal, noticing that the strange smell was still in the air in Peru, IL at the Target store.

Once finished, I returned home. By this time a friend of mine had posted on Facebook that Carus was telling people to clean the black/green material that was dotting my porch and everything outside my home with a combination of vinegar, water, and hydrogen peroxide mixed in equal parts. This would “inactivate” any chemicals that may remain active. As I was outside spraying down my porch I was notified by my wife that the school said they are keeping kids in until 3:00pm rather than the usual 2:00pm time they usually would be released. I continued to clean my porch, now using my pressure washer to spray off the remaining particles as a van from NBC pulled up asking for an interview. I declined as I had to get everything cleaned prior to picking up my children so they wouldn’t come in contact with the material on my porch.

Later that evening the news of the event came out from a press conference. There was a shelter in place order that was now (as of the evening news) lifted… something I had yet to hear about. The first call from the city coming at 7:58pm. We were informed that the IEPA and USEPA were monitoring the air quality as per standard protocol. The news that they had ended the air monitoring came January 13th.

Now, my first concern regarding this event is the lack of information from the city of La Salle. We have discussed this with them at city meetings, meetings that Carus to this day refuses to attend despite several requests from both the city and the residents. The emergency contact did not go out to many residents. That, as we have been informed, is now currently remedied. My second concern is that at no point was there an IEPA or USEPA person in my neighborhood to inform residents of any potentially dangerous chemical in the air.

Air quality results from the USEPA show that they have a 24-hour average standard that the main particulate matter concern (PM 2.5) should come to a total below 35.5 ug/m3. I looked at all of the published information from the USEPA and found several discrepancies in their numbers. First, the numbers are in mg/m3, a number that needs to be multiplied by 1000 to convert to the correct ug/m3 standard. Secondly, the air monitoring numbers for A-2 and A-3 (my home is between those two monitoring sites) show exactly two measurements, one taken the day of the fire (January 11, 2023) at 4:48pm (A-2) and the other at 6:32pm (A-2) that same day. As for the A-3 site the same, one taken at 4:59pm and the second at 6:47pm, both on January 11, 2023. No further testing is listed for either monitoring location (or any of the four locations north of the fire, the direction the wind was blowing that day). The numbers indicate levels at or above the indicated standard as the A-2 location was 35ug/m3 at 4:48pm and 52ug/m3 at 6:32pm. The A-3 location was 35ug/m3 at 4:59pm and 58ug/m3 at 6:47pm. Both numbers went up during the monitoring, both going from the Moderate/Unhealthy to Sensitive Groups range up to the Unhealthy [for all] range. There is no indication anywhere for these numbers past that point. Again, the standard [according to the USEPA website] is a 24-hour monitoring AVERAGE.

To further the concern, the last result listed for any of the monitors in any direction is on January 12, 2023 at 6:03am (SR-02). This would mean that the 24 hour standard was missed on the minimum number of hours by 10 hours and 20 minutes, using the data of the first collected sample taken at 4:23pm on January 11, 2023 (A-01). Did I mention that at the time of the last sample (SR-02 at 6:03am, January 12, 2023), if converted correctly was at 40ug/m3? That’s still listed at the level of Unhealthy for Sensitive Groups. My next concern is that the soil samples taken that day were taken from the Carus Chemical LLC site. We, as residents did have some sampling taken from Brownsfield via the City of La Salle, though there has been questions as to the validity of the samples taken. Similarly the wipe samples taken by the IEPA on January 12, 2023 were, in the laboratory report listed as (X301-X306) not a quantitatively valid unit [as reported].

Furthermore many samples “failed to meet the quality control criteria.” This also raises a red flag as the IEPA and USEPA are involved in our area as part of an ongoing superfund site. Most of the affected homes have already had their yards remediated (us as residents question the job done during the remediation as we now have drainage issues we didn’t have prior) and now are faced with the unfortunate question: what is now in our soil?

The original testing was based upon what the Carus representatives said went up in the explosion, nearly one million pounds of potassium permanganate. Under the assumption that Carus was truthful about what was in the fire, agencies only tested for potassium and manganese. What was missed was the potential for many other hazardous metals and chemicals that may also have been involved, many of which are health hazards. I am concerned that the standard should not be on what the company at fault contests is the risk rather than what are all of the potential risks?

We as citizens are becoming aware of the many potentially dangerous substances that are housed at their factory (or in the case of the Apollo warehouse, in our back yards without any local officials being aware of their existence). We also question why the EPA is still doing much more extensive testing at the site of the fire and plant while declining any further testing for the residents. We were exposed to the same chemicals and do not understand the logic.

Currently we as a community have been in contact with the Sierra Club in regards to what we may be able to do about the above concerns and many others that are being raised. Several of our homes had furnace filters tested that revealed levels of several of the aforementioned hazardous metals including Barium, Copper, Lead, Manganese, Zinc, and in a few cases Mercury. The USEPA, IEPA, and IDPH have all raised several questions as to the validity of the furnace filters and the chain of command.

Please let me be very clear, my filter was one of the filters tested with all but Mercury in it. My filter was 2 weeks old as of the explosion, having been changed at the beginning of the new year. The filter was removed by me and taken directly to my neighbor who was in contact with the Sierra Club and followed the proper handling as per their recommendations.

As to the validity of the indoor air quality, nobody in my home smokes, there is no fireplace, we have not painted anything in our home for several months, our furniture is several years old, we don’t use cleaners regularly and minimally when we do, and rarely, if ever, use candles and/or air fresheners. The sampled filter should have no reason to be contaminated given the idea that these metals (many of which don’t normally exist naturally in the environment) go down and do not “float” upwards according to information shared with us. My furnace is in my attic, not my basement. They would have to defy gravity to get there.

We are looking into what options we have as residents to make sure that the air we breathe is not toxic or harmful with long-term exposure for not only ourselves, but our children. The continued concern is that several residents that initially tested filters have had a second filter tested with results continuing to show all of the above toxic metals, some of which have even increased.

We worry that Carus Chemical LLC is continuing to pollute the air for our community and its citizens.

Other concerns we have encountered within this process is the ever moving target for property damage reimbursement via insurance claims. Originally, when the Carus hotline was opened up (and the third phone number we were given finally was a valid number) we were told to go through our homeowners insurance company and to give them a form from the Carus Chemical LLC website. Carus would use the Davies Company to work with our insurance after all claims are finalized to settle with the insurance company that had paid for our repairs. As such, I have been working with my insurance.

However, Carus is now sending “adjusters” to our area that will not verify the agency they work for, nor give us information regarding the insurance company being used by Carus. The company has also denied the information to the city of La Salle. The people that are coming out are handing residents paperwork with a check (covering a small portion of damages, including in one case I heard a car wash reimbursement). The paperwork includes the title of the resident’s name Vs Carus. This is a legally binding agreement in which the person signs away any right to further payments for property or health reimbursement.

This is not only deceptive, but fraud as the residents are led to believe it is to take care of a current claim and not to take care of the entirety of the claim. And if Carus had previously said they were only taking care of things not covered by our homeowners insurance, how can they be making offers of settlement when our homeowners claims have not been fully processed?

Something is not right here. We have concerns regarding local news sources removing or revising content to the extent of painting Carus in a more positive light. This pertains to multiple online articles and radio broadcasts that later were missing from the on-demand content. We have concerns that the city officials were made aware that the Apollo warehouse was vacant except for old machine parts, only to find out that it took fifteen semi loads, all without the proper hazardous labeling (our city and state police were made aware) to remove chemicals being stored there.

The warehouse is, come to find out, listed as a tier two chemical facility. It had a hole in the roof, boarded up windows, no security or security cameras, and no water sprinkler system. Furthermore the only alarm up until recently went directly to Carus, not to a local switchboard for emergency personnel. We have concerns that Carus continues to stonewall our local officials for any further testing or reimbursement for any testing that has already been done due to being cleared by both the IEPA and USEPA, even after the testing results being highly suspicious, even when posted on their own website and not meeting the standards set by their agencies. Carus continues to dodge all public forums and refuses to call residents back regarding any concerns they may have.

At no point during this process have I, or any resident I have spoken to, felt as if the governing bodies that we should believe are for the people have met a fraction of the expectations we should receive at a minimum. It feels as if our tax dollars are hard at work to keep us from getting answers and peace of mind. We ask for further, and proper, testing to make sure the health of the citizens of La Salle, IL are not being put at risk as a byproduct of this corporation’s operation so the rest of the world can have clean drinking water. We do not wish for our families to suffer significant health risks due to insufficient testing from what has already occurred and lack of further oversight of emissions by Carus Chemical LLC in the future.

It is a bit alarming to step back and realize that Carus Chemical LLC is responsible for a vast majority of the filtration for drinking water worldwide, giving them unimaginable influence and power politically. We recognize that Inga Carus has been on a number of trips with governors and elected officials representing plans for economic growth, potentially creating a vast interest in the company’s profitability and expansion. With this in mind, it is difficult to think anything other than the lack of concern and further testing by IEPA, US EPA and IDPH on behalf of the residents smells of political influence in play here.

Josh Busche

La Salle, IL resident, affected by the January 11, 2023 Carus Chemical LLC fire

Sierra Club Presentation – LaSalle City Hall Meeting – March 6, 2023 Full Audio & Slideshow

LS Council gets tough analysis of Carus fire Monday night

by: John Small, Starved Rock Media, March 7, 2023

LaSalle City Council got grim numbers about the Carus Chemical fire Monday night. At Mayor Jeff Grove’s invitation, the Sierra Club‘s MIla Kellen Marshall P.hD and Denise Trabbic-Pointer spoke to the Council about testing done immediately after the January 11th fire. Speaking by phone from Michigan, Trabbic-Pointer said particulate matter was sampled for about 19 hours after the blaze.

This dust is so fine, she said, it gets into the deepest parts of the lungs. More troubling said Trabbic-Pointer, were results showing levels 12 points above the 24-hour regulatory limit. Later, an examination of eight furnace filters taken from affected homes showed the presence of the metals Barium, Copper, Lead, Manganese and Zinc. Alderman Jim Bacidore asked Trabbic-Pointer is it safe outside for kids and pets:

For almost two hours, residents whose property took the brunt of the chemical laden smoke, took more shots at Carus and sometimes the city. The question of legal action against Carus was discussed. City Attorney Jim McPhedran said it’s something that’s costly and a deeply involved process. Carus Chemical officials continue to duck City Council meetings.

Photo Credit: Jamie Hicks
Photo Credit: Katie Dumke Troccoli

EPA Test Results & Sierra Club analysis of chemical samples taken 1/12/23 following the Carus Chemical explosion & fire

Sierra Club to present Filter Test results at LaSalle City Council meeting Monday, March 6 – will test more filters

FILTER & SOIL TESTING!!!

We are working with Sierra Club to test furnace/air filters & soil for contaminants from the chemical fire & Carus’ plumes.

Contact Jamie Hicks 815-252-4417 for information.

Sierra Club Illinois will be present at the LaSalle City Council meeting on Monday, March 6th to discuss these chemicals, health effects and results of previous air filter tests.

Please attend if you’re available.

City Hall Meeting

City of LaSalle Building

745 2nd St, LaSalle, IL

Monday, March 6, 2023, 6:30pm

Below is a list of contaminants w/ health effects that were found in the last round of testing. Check out our blog for more information about EPA & Sierra Club testing. https://protectstarvedrock.wordpress.com/…/epa-test…/

***

Barium compounds (except for barium sulfate (CAS No. 7727-43-7))

Cardiovascular: Referring to the heart and blood vessels. Effects may include arrhythmia, changes in blood pressure, heart failure and/or disorders of the peripheral blood vessels.

Renal: Referring to the kidneys. Effects may include decreased filtering capacity/ efficiency, blood in the urine and/or increased/decreased blood pressure.

Mercury compounds

Developmental: Referring to growth, differentiation and maturation. Effects may occur from conception through sexual maturation, and may include altered growth, structural abnormalities and/or functional deficiencies.

Neurological: Referring to the brain, spinal cord, and nerves. Effects may include impaired sensory and motor signaling.

Other Systemic: Effects not otherwise categorized.

Renal: Referring to the kidneys. Effects may include decreased filtering capacity/ efficiency, blood in the urine and/or increased/decreased blood pressure.

Lead compounds

Cancer: Probable human carcinogen based on sufficient evidence of carcinogenicity in animals only applies to inorganic lead compounds

Cardiovascular: Referring to the heart and blood vessels. Effects may include arrhythmia, changes in blood pressure, heart failure and/or disorders of the peripheral blood vessels.

Developmental: Referring to growth, differentiation and maturation. Effects may occur from conception through sexual maturation, and may include altered growth, structural abnormalities and/or functional deficiencies.

Hematological: Referring to the blood. Effects may include alterations of blood composition, clotting and/or the production and function of blood cells, e.g., red blood cell production within bone marrow, red blood cell ability to carry oxygen.

Neurological: Referring to the brain, spinal cord, and nerves. Effects may include impaired sensory and motor signaling.

Copper compounds

Gastrointestinal : Referring to all parts of the digestive tract. Effects may include inflammation, ulcers, reflux and/or vomiting.

Respiratory: Referring to the exchange of oxygen for carbon dioxide. Effects may include inflammation of the lungs or associated airways, increased/decreased breathing rate, insufficient oxygen-carbon dioxide exchange and/or respiratory failure.

Sierra Club calls on the EPA to step up in the aftermath of the Carus Chemical Disaster

The Sierra Club has been a wonderful resource for the community as we navigate through the fallout of the Carus Chemical disaster.

As Hannah and Sonya wrote in the below article, what happened that day was straight out of a disaster movie – a chemical cloud covered the sky and rained down on the City of LaSalle, Illinois.

Residents who live closest to the chemical plant had the most fallout.

Emails obtained through FOIA revealed that Carus Chemical instructed the City how to handle the situation and when to inform residents as the events unfolded that day.

Residents were not made aware of the situation until approximately 45 minutes after the explosion of chemicals and the fire broke out.

They were told to shelter in place and not evacuate the area as toxic smoke filled the air.

Despite having a chemical plant next to a residential neighborhood, there was not a hazmat plan in place.

Brownfield, the company the City of LaSalle hired to perform tests to determine cleanup efforts, did not test for the full spectrum of chemicals and metals and released only partial results at the LaSalle city council meeting last Monday, February 6, 2023.

Thankfully, one LaSalle resident, Jamie Hicks, who lives in the neighborhood hit hardest, was not accepting their explanations or results.

EPA test results obtained through FOIA reveled much more than what the City of LaSalle and Carus Chemical released.

Below is a list of chemicals and heavy metals found in samples taken by the EPA that were tested and had levels beyond what the EPA considers acceptable.

These chemicals and metals are in peoples’ yards, where their pets and children play, on their homes, decks, and in their pools and garden beds.

Some residents were outside when the cloud of toxins passed over.

As chemicals and ash rained down from the sky, their bodies were covered in it.

The Sierra Club has been incredibly helpful with helping us understand what this means.

Below is an article published by Sonya Lunder, Senior Toxic Policy Advisor, and Hannah Lee Flath at the Sierra club.

THANK YOU, Sierra Club for your support and knowledge.

2-Butanone (MEK)
Acetone
Aluminum
Antimony
Arsenic
Barium
Boron
Cadmium
Chromium
Cobalt
Copper
Cyanide
Lead
Magnesium
Manganese
Mercury
Nickel
Potassium
Selenium
Sodium
Strontium
Thallium
Vanadium
Zinc

#rural#ruralamerica#contamination#cancercluster#Illinois#ResourceCurse

Read: Toxic Ash Is Raining Down in Illinois. It’s Time for the EPA to Step Up: The nation’s environmental watchdog needs to enact the strongest possible protections for workers and fenceline communities. By Hannah Lee Flath and Sonya Lunder at the Sierra Club:

Link to Sierra Club Article: https://www.sierraclub.org/sierra/toxic-ash-raining-down-illinois-it-s-time-epa-step?fbclid=IwAR2Ym6AibmnbrRCiFslT99Ps6qKRmAEEVZ7BnP-8agqAat3VMBMpb5gvqXc

EPA test results: https://protectstarvedrock.wordpress.com/2023/02/16/epa-test-results-sierra-club-analysis/

From Clothing to Chemicals: Ottawa South Towne Mall is now a tier 2 chemical storage facility.

Chemical storage ordinance for Carus Chemical at Ottawa South Towne Mall

Ottawa’s city council met in July 2022 and approved Carus Chemical to use the Ottawa South Towne Mall to store hazardous chemicals.

Only one person went to the Ottawa City Council meeting when this proposal was being discussed.

According to Shaw Local News, the only reason he came was because he was concerned about the lawn getting mowed at the mall near his home.

Nobody came to ask questions about safety precautions, hazmat plans, or anything else about the proposal to store Carus’ chemicals at the Ottawa South Towne Mall.

Fast forward to January 11, 2023 when an explosion occurred at Carus Chemical’s manufacturing plant in LaSalle, Illinois, that caused chemicals to rain down on the neighborhood and a massive fire to break out and release plumes of toxic smoke into the air.

The chemical, potassium permanganate, that blew up all over the LaSalle neighborhood is the same chemical that was approved for storage at the mall by Ottawa City Council, and is now being stored there.

Potassium permanganate is almost always presented by Shaw News, local politicians and Carus chemical as being for water treatment.

This makes it sound benign, like Carus is making these chemicals so we can have safe drinking water, as if they’re some kind of hero. 🐂💩

According to Carus’ website, potassium permanganate is used for treating fracking wastewater, separating metals in mining and in refining crude oil.

This is a hazardous, dangerous chemical that was approved for storage near a residential neighborhood and senior apartment complex in Ottawa, Illinois.

Last week, a neighbor next to Carus photographed and filmed semis hauling 7 loads of chemicals out of their warehouse in LaSalle, and followed them to the South Towne Mall, where they unloaded barrels and pallets for storage.

How will the City of Ottawa handle a situation like what happened in LaSalle when this same chemical started on fire and exploded?

As Jamie Hick’s said, “You’ve got our bomb now, Ottawa.” 💣

Ordinance for Ottawa Chemical Storage at South Towne Mall:

Shaw Local News: Request to use South Towne Mall in Ottawa as storage heads to City Council

By Michael Urbanec, Shaw Local News. July 25,2022

https://www.shawlocal.com/mywebtimes/2022/07/26/request-to-use-south-towne-mall-in-ottawa-as-storage-heads-to-city-council/?fbclid=IwAR0Yenr8Mz8o2rZggBs-iE6A95jSzmjltfHc0j8GrZnZbR_0E4E5iAKnNZo

Chemical Safety Data Sheets for Chemicals being stored at the former Ottawa South Towne Mall, Lotz Storage.

Chemicals being stored at this location include, but are not limited to the following:

Carus Chemical Lied to the EPA about the Apollo Warehouse

Carus Chemical told the EPA they didn’t know what was inside the Apollo Warehouse, a building that is on their property, located next to a residential neighborhood, separated by a chain-link fence.

Meanwhile, 4 days after this email exchange between Carus Chemical and the EPA, Carus was photographed and filmed hauling 7 truckloads of unlabeled barrels and pallets out of the Apollo warehouse building, and transporting them to a tier 2 chemical storage facility, formerly known as the the Ottawa South Towne Mall, as can be seen in this video. https://www.facebook.com/jamie.hicks.547/videos/1802914950093166

Carus did not expect for neighbors to be so upset after their chemical plant blew up, and rained chemicals on the neighborhood, that the neighbors would learn how to use FOIA to gather evidence, then follow and photograph Carus’ every move.

Watching Carus scramble in attempt to hide these chemicals and move them out of the building where they are being illegally stored has been somewhat amusing.

Unfortunately, the City of LaSalle is helping Carus in their cover-up, as they provided a police escort for Carus’ semis to haul the illegally stored chemicals to a proper facility before the EPA came to inspect.

In addition, the semis did not have hazmat placards on them.

Emails obtained through FOIA have revealed that Carus contacted the chief of police and asked for off-the-clock officers to provide private security 24/7 for the next few weeks.

The chief responded by saying he will check with the officers and put together a schedule.

Who will these officers be loyal to in light of illegal activity – citizens or the polluter that is paying them?

EPA Test Results & Sierra Club analysis of chemical samples taken 1/12/23 following the Carus Chemical explosion & fire

Sierra Club Analysis & Notes:

Sierra Club Analysis

The below information was provided by the Sierra Club:

Results compared to RSL in soil

The results for two metals, Manganese and Thallium were above the EPA regional screening levels (RSL) for residential soil. Three results, Selenium, Cadmium and Cobalt, were above the Noncarcinogenic Screening Levels – Child criteria.  The following are brief descriptions of the hazards of each of these metals. Keep in mind that the described health impacts are based on chronic exposures that are above the listed screening levels and do not describe the effect of a single acute exposure.

  • Manganese: Manganese in water poses minimal hazards, however, manganese is soil or dust does pose a significant hazard, especially through inhalation. Manganese toxicity can result in a permanent neurological disorder known as manganism with symptoms that include tremors, difficulty walking, and facial muscle spasms. These symptoms are often preceded by other lesser symptoms, including irritability, aggressiveness, and hallucinations. The average manganese soil concentrations in the United States is 40–900 mg/kg. Source: ATSDR – CDC. The maximum manganese level in this one soil sample was 293,000 mg/Kg. The screening level for a child that is listed is primarily based on ingestion of Manganese. The inhalation screening level for a child is 7,100 mg/Kg.
  • Thallium: Thallium blood concentration levels are normal below 2 µg/L, and toxic at concentrations greater than 200 µg/L. DELAYED EFFECTS OF EXPOSURE: Long-term effects of thallium exposure can include difficulty walking, various involuntary movement disorders, and impairment of thought and mood. Source: NIOSH – CDC High concentration of thallium in shallow soil also poses a notable threat due to possible uptake by plant roots and storage in plant biomass. As a result, thallium may enter the food chain and accumulate in living organisms, causing severe disorders and ultimately becoming fatal. Source: National Library of Medicine. The screening level for a child that is listed is primarily based on ingestion of Thallium.
  • Selenium: Selenium is a naturally occurring mineral required for good health. It is obtained from food, and the recommended dietary allowance is 55 μg/d for persons 14 years or older, with a tolerable upper intake limit of 400 μg/d. Selenium toxicity can occur with acute or chronic ingestion of excess selenium. Symptoms of selenium toxicity include nausea; vomiting; nail discoloration, brittleness, and loss; hair loss; fatigue; irritability; and foul breath odor (often described as “garlic breath”). Source: National Library of Medicine. The screening level for a child that is listed is primarily based on ingestion of Selenium.
  • Cadmium: Cadmium (Cd) is a post-transition metal that has been found to exhibit biological toxicity that is “teratogenic, carcinogenic, and mutagenic.” It is easily absorbed by crops, causes harm to crop growth and development, affects crop quality and yield, and, as part of the food chain, leads to damage to the lungs, liver, kidneys, bones, and reproductive organs, causes toxic effects to the immune and cardiovascular systems, and is associated with various diseases. The Agency for Toxic Substances and Disease Registry (ATSDR), lists Cd as the sixth most toxic substance that endangers human health. Source: National Library of Medicine. The screening level for a child that is listed is primarily based on ingestion of Cadmium.
  • Cobalt: Cobalt is a natural element found throughout the environment.  Acute (short-term) exposure to high levels of cobalt by inhalation in humans and animals results in respiratory effects, such as a significant decrease in ventilatory function, congestion, edema, and hemorrhage of the lung. Respiratory effects are also the major effects noted from chronic (long-term) exposure to cobalt by inhalation, with respiratory irritation, wheezing, asthma, pneumonia, and fibrosis noted.  Cardiac effects, congestion of the liver, kidneys, and conjunctiva, and immunological effects have also been noted in chronically-exposed humans.  Cobalt is an essential element in humans, as a constituent of vitamin B12.  Human studies are inconclusive regarding inhalation exposure to cobalt and cancer.  EPA has not classified cobalt for carcinogenicity. Source: US EPA. The screening level for a child that is listed is primarily based on ingestion of Cobalt.
  • Potassium: Note that there is no EPA RSL or SL for Potassium but the maximum level in the soil sample was 71,600 mg/Kg (ppm). Potassium is a major plant nutrient. Healthy levels of potassium in soil range from 40 to 80 ppm. There are no severe health impacts related to ingestion or exposure to potassium. However, your total intake of potassium should not be greater than the recommended amounts, unless ordered by your doctor. In some cases, too much potassium may cause muscle weakness, confusion, irregular heartbeat, or difficult breathing. Source: Mayo Clinic

I don’t know what criteria that Brownfield, the City or EPA will use as comparison of the results. That is why I used listed Generic Regional Screening Levels. Besides comparing each result to some criteria, Cumulative Impacts are something that needs to be considered by the responsible parties. Many of the symptoms of over-exposure to these metals are common and result in similar endpoints and so, in a cumulative or additive manner, can be more harmful in combination.