PUBLISH 

UNITED STATES COURT OF APPEALS 

FOR THE TENTH CIRCUIT 

_________________________________ 

CAROLYN BAYLESS, 

 Plaintiff - Appellant, 

v. 

UNITED STATES OF AMERICA, 

 Defendant - Appellee, 

and 

UNITED STATES ARMY; KAROL 

RIPLEY, Lt. Col. Commander Tooele 

Army Depot; DESERET CHEMICAL 

DEPOT, Commander, Attn: AMSSBODC; FORT MYER MILITARY 

COMMUNITY, Office of the Claims 

Judge Advocate; UNITED STATES 

ARMY LEGAL SERVICES AGENCY; 

DEREK SHOUP, Office of the Staff Judge 

Advocate, 

 Defendants. 

No. 12-4120 

(D.C. No. 2:09-CV-00495-DAK) 

_________________________________ 

ORDER

_________________________________ 

Before HARTZ and TYMKOVICH, Circuit Judges, and JACKSON,

*

 District Judge. 

_________________________________ 

 *

Honorable R. Brooke Jackson, U.S. District Judge, United States District Court 

for the District of Colorado, sitting by designation. 
2 

This matter is before the court on the petition for panel rehearing filed by the 

United States. We also have a response from the appellant. Upon consideration, we grant 

panel rehearing in part. Specifically, rehearing is granted to the extent of the 

modifications made in the attached amended decision. The primary amendments can be 

found on pages 2 and 23 of the court’s opinion. The request for panel rehearing is 

otherwise denied. The clerk is directed to reissue the amended decision forthwith. 

Entered for the Court 

ELISABETH A. SHUMAKER, Clerk 
PUBLISH 

UNITED STATES COURT OF APPEALS 

FOR THE TENTH CIRCUIT

__________________________________ 

CAROLYN BAYLESS, 

 Plaintiff - Appellant, 

v. No. 12-4120 

UNITED STATES OF AMERICA, 

 Defendant – Appellee, 

and 

UNITED STATES ARMY; KAROL 

RIPLEY, Lt. Col. Commander Tooele 

Army Depot; DESERET CHEMICAL 

DEPOT, Commander, Attn: AMSSBODC; FORT MYER MILITARY 

COMMUNITY, Office of the Claims 

Judge Advocate; UNITED STATES 

ARMY LEGAL SERVICES AGENCY; 

DEREK SHOUP, Office of the Staff Judge 

Advocate, 

 Defendants. 

__________________________________ 

APPEAL FROM THE UNITED STATES DISTRICT COURT 

FOR THE DISTRICT OF UTAH 

(D.C. NO. 2:09-CV-00495-DAK) 

__________________________________ 

Kimberly M. Hult of Hutchinson Black and Cook, LLC, Boulder, Colorado (Keith M. 

Edwards of Hutchinson Black and Cook, LLC, Boulder, Colorado; and Steve Russell, 

Grand County Law & Justice Center, P.C., Moab, Utah, with her on the briefs), for 

Appellant. 

FILED 

United States Court of Appeals 

Tenth Circuit 

September 12, 2014

Elisabeth A. Shumaker 

Clerk of Court
2 

Jeffrey E. Nelson, Assistant United States Attorney (David B. Barlow, United States 

Attorney, with him on the brief), Salt Lake City, Utah, for Appellee. 

__________________________________ 

Before HARTZ and TYMKOVICH, Circuit Judges, and JACKSON

, District Judge. 

__________________________________ 

JACKSON, District Judge. 

__________________________________ 

 Sixteen years ago Carolyn Bayless began to suffer from a mysterious debilitating 

illness. As her condition deteriorated over the years that followed, she doggedly sought 

to learn what caused (and how to treat) her illness. Finally, in 2008, convinced that she 

was the victim of exposure to nerve gas emitted by an Army testing facility, she filed a 

claim under the Federal Tort Claims Act. When this lawsuit followed in 2009, the Army 

responded that she knew of her claim by at least 2005 and had waited too long to assert it. 

The district court agreed and granted summary judgment dismissing the case. We 

conclude that under the unusual circumstances presented here, the district court erred in 

holding that the period of limitation accrued by May 2005. Therefore, exercising 

jurisdiction pursuant to 28 U.S.C. § 1291, we reverse. 

I. BACKGROUND 

A. Factual Background 

In 1997, after graduating from college with a conservation biology degree, Ms. 

Bayless began a seasonal position as a range technician with the Utah Division of 

Wildlife Resources. As a result, she traveled to remote locations around the state to 

 



The Honorable R. Brooke Jackson, United States District Judge for the District of 

Colorado, sitting by designation. 
3 

conduct various wildlife studies, including one location less than ten miles away from the 

Dugway Proving Grounds (“Dugway”) and another location within two miles of Tooele 

Chemical Agent Disposal Facility (“Tooele”). Unbeknownst to Ms. Bayless during the 

time in which she worked near them, both Dugway and Tooele were United States Army 

sites then conducting chemical and biological weapons testing. 

In October 1997, about a month after completing her seasonal position with the 

Utah Division of Wildlife Resources, Ms. Bayless began to experience episodic lip 

numbness and blurred vision, which she attributed at that time to sitting in front of the 

computer for numerous hours a day. After the symptoms failed to dissipate, however, 

Ms. Bayless sought medical evaluation. In February 1998 she saw an ear, nose, and 

throat specialist who performed an MRI, which returned normal results. Shortly 

afterwards and notwithstanding those normal results, Ms. Bayless experienced numbness 

through her entire left side following cleaning her house with chemicals. Ms. Bayless 

thus began a long and arduous search for an answer to her worsening medical condition. 

In May 1998, Ms. Bayless sought evaluation from a neurologist, Dr. Christopher 

Reynolds, whose tests likewise revealed normal results. The numbness meanwhile 

spread to Ms. Bayless’ right foot and right arm. After severe vertigo sent Ms. Bayless to 

the emergency room in July 1998, she discontinued her birth control pills upon her 

doctor’s advisement that she suffered a transient ischemic attack.1

 Later in the same 

 

1

 Ischemia is a “deficient supply of blood to a body part (as the heart or brain) that is due 

to obstruction of the inflow of arterial blood.” MERRIAM-WEBSTER ONLINE 

DICTIONARY, available at https://www.merriam-webster.com/medical/ischemia. 
4 

month, Ms. Bayless sought out a second neurologist, Dr. Dennis Thoen, whose tests 

again showed normal results. 

In January 1999, however, Dr. Thoen began to suspect that Ms. Bayless’ 

symptoms were caused by multiple sclerosis (“MS”). After a series of referrals, in 

February 1999 a neurologist and MS specialist, Dr. John Rose, formally diagnosed Ms. 

Bayless with MS and prescribed medication accordingly. Ms. Bayless’ condition, 

however, only continued to worsen, and she discontinued the MS medication in August 

1999. 

Ms. Bayless’ condition thereafter seemed to improve, and she became pregnant in 

January 2000. Unfortunately, her improvement proved to be temporary. In March 2000 

Ms. Bayless’ health took a dramatic turn for the worse when she suffered a miscarriage 

and underwent an emergency dilation and curettage. Two days later she began to 

experience severe difficulty walking, and she lost control of her fine motor skills. She 

became unable to care for, even to feed, herself. Ms. Bayless described it as going from 

functional to nonfunctional. 

Still under the theory that this sudden deterioration was related to MS, Dr. Rose 

prescribed oral steroids on March 24, 2000. The steroids only worsened Ms. Bayless’ 

condition. Despite what was happening, however, another MRI performed on July 3, 

2000 yet again showed normal readings. 

In July and August 2000, Ms. Bayless traveled to Chicago to another MS 

specialist, Gastone Celesia, M.D., who determined that she had been improperly 
5 

diagnosed with MS. Instead, Dr. Celesia and another specialist, Dr. Tony Fletcher, both 

suspected Ms. Bayless’ symptoms were psychosomatic. 

Veering Ms. Bayless in another direction in October 2000, Utah physician Judith 

Moore, D.O., diagnosed Ms. Bayless with a chronic Epstein-Barr viral infection. Dr. 

Moore prescribed vitamins and supplements to treat the infection. But a month later Dr. 

Dean Wingerchuk, a neurologist at the Mayo Clinic in Arizona, seconded Drs. Celesia’s 

and Fletcher’s conclusion that Ms. Bayless did not suffer from MS and advised her that 

the psychosomatic symptoms would disappear without medical treatment. Hoping that 

her symptoms would dissipate as these doctors had counseled her, Ms. Bayless stopped 

seeking medical treatment. In August 2001 she gave birth to a daughter in Colorado. 

Although Ms. Bayless continued to suffer from the same neurological problems, she did 

not seek treatment for another year after her daughter’s birth. 

In October 2002, Ms. Bayless, now having discarded the MS theory and 

suspecting that her symptoms might be related to neck issues, began treatment with a 

series of chiropractors. On her intake forms with one of the chiropractors, Dr. Beau 

Maudlin, Ms. Bayless mentioned her work in southern Utah and raised concerns over 

nuclear testing and mining tailings in the area. Dr. Maudlin referred Ms. Bayless to 

another chiropractor, Susan Rector, at the end of March 2003. Dr. Rector raised her 

suspicion that Ms. Bayless’ symptoms might be caused by heavy metal or mercury 

poisoning. Ms. Bayless was then referred to a dentist to remove her mercury dental 

fillings, but these detoxification treatments were again unfruitful in resolving her 

symptoms. 
6 

Subsequently, still in 2003, Ms. Bayless was referred by her dentist to a clinical 

nutritionist, Sam Queen. On the “Possible Exposure” portion of her patient intake form, 

Ms. Bayless wrote, “I think I may have been exposed to uranium in the soil in southern 

Utah when I worked for the Division of Wildlife for 6 months collecting plant and soil 

samples.” App. to Appellant Br. 64. Mr. Queen performed blood work analysis and 

informed her that he suspected her symptoms were caused by “organophosphate pesticide 

poisoning.” Id. Ms. Bayless assumed this meant she had been exposed to lawn 

pesticides and, while she did not pursue an additional investigation into the diagnosis, she 

began Mr. Queen’s detoxification regimen. However, Ms. Bayless stopped that regimen 

in December 2004 on the recommendation of her physician at the time, Dr. Dennis 

Remington, who noted that she suffered from an apparent chronic renal failure. 

In early 2005, Ms. Bayless read a magazine article by a woman named Pauly who 

had experienced similar symptoms. When Ms. Bayless spoke with Pauly on the 

telephone, she learned that Pauly developed her neurological symptoms after visiting an 

Army base. Pauly suspected her own symptoms were caused by biological weapons 

testing at the base, and she referred Ms. Bayless to Dr. Garth Nicolson, a research 

professor at the Institute of Molecular Medicine in San Diego who studies biological 

weapons. 

Dr. Nicolson suggested to Ms. Bayless various methods of detecting exposure to 

biological weapons, including a polymerase chain reaction (“PCR”) test. Ms. Bayless did 

not obtain a PCR test at that time due to “debates on whether the PCR is accurate or not.” 

Id. at 73. Notably, Ms. Bayless did not discuss nerve agents with Dr. Nicolson, only 
7 

biological agents and the related conditions caused by mycoplasma fermentans and 

mycoplasma incognitus.

In early 2005, after speaking again with Pauly, Ms. Bayless began to research 

biological and chemical weapons testing. Upon discovering the existence of the Army 

sites at Dugway and Tooele, Ms. Bayless again consulted Mr. Queen regarding any 

possible exposure to biological and chemical weapons. On February 1, 2005, Mr. Queen 

wrote to Ms. Bayless that normally her lack of improvement from pesticide detoxification 

“may be because of exposure to various toxins.” Id. at 66, 107. Mr. Queen suggested 

that a “secondary toxin . . . due to nerve agents, etc.,” might be causing the lack of 

improvement in her case. Id. Mr. Queen wrote that “the Institute of Orthomolecular 

Medicine . . . would probably have a way to test for this,” and that “the information may 

be very useful.” Id. 

Ms. Bayless did not follow up with this Institute. Instead, on February 9, 2005 

Ms. Bayless raised the issue with Dr. Remington who recorded that he discussed “new 

ideas” with Ms. Bayless about her work history adjacent to Dugway and Tooele. Id. at 

68, 97. Dr. Remington’s notes do not record—and Ms. Bayless does not remember—

whether he recommended any treatment or follow-up after this discussion. 

Ms. Bayless also began seeing Dr. Robert Moody, another physician in Utah, in 

early 2005. Among other things Ms. Bayless provided contact information for Major 

Craig Lynch at Dugway, who was a contact provided by Dr. Nicolson from the Institute 

of Molecular Medicine, to Dr. Moody. Id. at 111. In her note to Dr. Moody, Ms. Bayless 

mentioned that Dr. Nicolson had purportedly helped Major Lynch with his Gulf War 
8 

Illness. However, neither Ms. Bayless nor Dr. Moody followed up by contacting Major 

Lynch. 

In an undated letter from early 2005 to Mr. Queen, Ms. Bayless commented on her 

mother’s medical history while she was pregnant with Ms. Bayless. Ms. Bayless 

remembered that her mother took two anticonvulsant drugs during the pregnancy, and she 

also remembered some neurological problems in her childhood. She wrote, “My hunch is 

that these two drugs caused a weakness in my central nervous system/brain so that when I 

was exposed to a neurotoxin near Dugway it explains why it affected me so badly.” Id. at 

109. 

Ms. Bayless also wrote that she had found a doctor2

 who believes that she “was 

exposed to a neurotoxin out at Dugway and is willing to pursue it and call out there.” 

This doctor, she claimed, also believed that the amount of acetylcholine in Ms. Bayless’ 

muscles was deficient. Ms. Bayless noted that she had read “that organophosphate 

toxicity (like what they believe may be affecting some Gulf War vets) damages the 

acetylcholinesterase enzyme so there is a buildup of acetylcholine in the nerve endings 

which causes neuromuscular problems.” Id. at 68–69. Mr. Queen wrote in his reply—

also undated—that this is “possible,” and that treatment with huperzine would eliminate 

any acetylcholinesterase inhibitors.3

 

 

2

 Although the letter is unclear, Ms. Bayless believes that this doctor she mentioned was 

referring to Dr. Moody, who later performed an acetylcholine test in May 2005. 

3

 As discussed below, Ms. Bayless was treated unsuccessfully with huperzine later in the 

summer or fall of 2005. 
9 

On March 15, 2005, Dr. Moody recorded in Ms. Bayless’ history that “[a]ll [signs 

and symptoms] preceded by working at forestry service near Dugway [with] exposure to 

Seran [sic], Brucelloses [sic], multiple infectious disease.” Id. at 74, 114. On April 12, 

2005, Dr. Moody also recorded that Ms. Bayless “[m]ay have been exposed to nerve gas 

being destroyed [at] Toela [sic] Army.” Id. at 73, 113. 

Meanwhile, also around April 2005, Ms. Bayless met with Dr. Rebecca Levine, a 

family practitioner, on yet another theory that her symptoms might be related to seizure 

activity. After hospital testing revealing negative results, Ms. Bayless crossed off seizure 

activity as a potential cause. 

At some point in early 2005 during her own research, Ms. Bayless had learned of a 

man named Gary Harris who had worked at Dugway in 1996 and who had suspicions that 

he had been exposed to nerve agents. Mr. Harris shared similar symptoms to those 

experienced by Ms. Bayless, including “brain fog, numbness, muscle weakness, and 

chronic fatigue.” Id. at 71, 116. Mr. Harris informed Ms. Bayless that “the government 

was shooting munitions filled with VX and GB nerve agents into the southwest corner of 

Dugway and lost a lot of them outside the borders.” Id. at 116. He also informed Ms. 

Bayless that she could have been exposed if she had been downwind from the open burns 

and detonations that the government performed during that time.

On May 3, 2005, Ms. Bayless saw Dr. Moody again, who recorded in his notes: 

“Exposure to possible Seran/VX [sic]. [1996–1997] shot munitions into SW corner.” Id.

at 113. On the same day, Ms. Bayless asked Dr. Moody to test her acetylcholine levels. 
10 

On May 4, 2005, Ms. Bayless, citing her own research and the information she 

learned from Mr. Harris about Dugway, wrote in an email to Mr. Queen: “I now am 

pretty sure that my symptoms were caused by low-level exposure to nerve agents, 

probably VX and GB (sarin nerve gas).” Id. at 116. Ms. Bayless also wrote that she 

found out that employees in the Tooele facility, which operated “the largest nerve gas 

incinerator in the world,” have also suffered neurological problems. Id. 

Nevertheless, around the same time in early May 2005,4

 Ms. Bayless received 

negative results from Dr. Moody’s acetylcholine test. Later between July and October of 

2005, Ms. Bayless was also treated by Mr. Queen with huperzine, a Spanish club moss 

that he believed should have neutralized effects of sarin nerve gas by targeting inhibitors 

of acetylcholinesterase enzymes and thereby restored Ms. Bayless’ acetylcholine levels. 

After three days of treatment, however, Ms. Bayless’ condition not only failed to improve 

but it actually worsened. Mr. Queen therefore discontinued any theory that an 

organophosphate toxicity would be linked to sarin, and Ms. Bayless ended her search for 

a chemical weapons link. 

In early 2006, Ms. Bayless began seeing another nutritionist in Utah, Pat 

Montague. Ms. Bayless, having abandoned the possibility that her condition was related 

to Dugway or Tooele, worked with Ms. Montague’s suspicion that a candida infection in 

 

4

 It is unclear from the record when Ms. Bayless received the results of her acetylcholine 

blood test performed on May 3—whether the results were returned alongside the test 

being performed or following her email on May 4 to Mr. Queen. Appellant states in 

briefing that the results came after the email had been sent, see Appellant Br. 13, but the 

Court cannot discern anything in the record indicating the date Ms. Bayless knew the 

results. 
11 

Ms. Bayless’ intestinal tract was to blame. Ms. Bayless adhered to a strict diet to treat 

this until October 2006—but again to no avail. 

Returning again to biological weapons, Ms. Bayless visited another Utah family 

medicine specialist, Dr. Todd Mangum, in October or November 2006. Dr. Mangum 

administered the PCR test for biological weapons, the test previously recommended by 

Nicolson in 2005. The test results for mycoplasma fermentans and mycoplasma 

incognitus returned negative in December 2006. 

Finally, Ms. Bayless sought out Dr. William Rea, a specialist in neurotoxicity at 

the Environmental Health Center in Dallas, Texas. During her first visit with Dr. Rea on 

February 5, 2007, Ms. Bayless told him about her work in Utah near a nerve gas 

incinerator. Dr. Rea recorded in his notes that Ms. Bayless “strongly suspects that she 

was exposed to sarin nerve gas at the Dugway Proving Ground.” Id. at 118. Dr. Rea then 

administered, among many other scans and tests, a cholinesterase test. For the first time, 

Ms. Bayless received positive test results showing low cholinesterase levels—an opposite 

result from the acetylcholine test performed by Dr. Moody in May 2005—now indicating 

that she suffered from what Dr. Rea called an “organophosphate pesticide toxicity.” Id.

at 76; see also id. at 120. 

Dr. Rea diagnosed Ms. Bayless in a June 21, 2007 report with toxic 

encephalopathy, toxic effect of molds, toxic effect of pesticides, toxic effect of metals, 

chronic fatigue, fibromyalgia, autonomic nervous system dysfunction, vasculitis, and 

immune deregulations. Id. at 124. He concluded that Ms. Bayless suffered from 

moderate neurotoxicity while noting that her “visual and respiratory symptoms . . . are 
12 

delayed sequelae in Sarin exposure.” Id. at 126. Dr. Rea wrote that he “firmly believe[d] 

that in all medical probability this patient’s incapacitation is a result of her exposure to 

pesticides, heavy metals, molds, and mycotoxins in the workplace.” Id. at 127. 

B. Procedural History

Ms. Bayless filed an administrative claim on January 31, 2008, alleging that the 

activities of United States Army on its Dugway facility caused her to sustain permanent 

neurological and other injuries. Id. at 129–34. On May 29, 2009, Ms. Bayless filed a 

complaint under the FTCA in the United States District Court for the District of Utah. 

On December 2, 2011, the government moved for summary judgment to dismiss 

Ms. Bayless’ complaint for lack of subject-matter jurisdiction. The government argued 

that Ms. Bayless failed to present her administrative claim within two years of the accrual 

of that claim pursuant to 28 U.S.C. § 2401(b). After hearing argument on April 19, 2012, 

the district court granted the motion on May 17, 2012. The district court concluded that 

Ms. Bayless acquired enough knowledge by May 2005 for her claim to begin to accrue 

and also that her claim was not protected by the doctrine of equitable tolling. Ms. 

Bayless appealed. 

II. DISCUSSION 

“Absent a waiver, sovereign immunity shields the Federal Government and its 

agencies from suit.” Dahl v. United States, 319 F.3d 1226, 1228 (10th Cir. 2003) 

(quoting Fed. Deposit Ins. Corp. v. Meyer, 510 U.S. 471, 475 (1994)). The FTCA waives 

the United States’ sovereign immunity from tort claims and makes it liable “in the same 
13 

manner and to the same extent as a private individual under like circumstances.” 28 

U.S.C. § 2674. A tort claim against the government, however, is “forever barred unless it 

is presented to the appropriate Federal agency within two years after such claim accrues.” 

28 U.S.C. § 2401(b). Thus as a threshold matter, timeliness “is one of the conditions of 

the government’s waiver of sovereign immunity under the FTCA, and [a federal] court 

lacks subject matter jurisdiction to proceed under the FTCA if a plaintiff fails to satisfy 

the FTCA’s timing requirements set forth in § 2401(b).” Harvey v. United States, 685 

F.3d 939, 947 (10th Cir. 2012) (quoting Franklin Sav. Corp. v. United States, 385 F.3d 

1279, 1287 (10th Cir. 2004)). 

Whether a plaintiff has “file[d] an FTCA claim within the two-year statute of 

limitations period is a matter we review de novo.” Plaza Speedway Inc. v. United States, 

311 F.3d 1262, 1266 (10th Cir. 2002). In construing when a claim accrues within the 

meaning of § 2401(b), we seek to interpret the section consistent with congressional 

intent. Cannon v. United States, 338 F.3d 1183, 1190 (10th Cir. 2003) (citing United 

States v. Kubrick, 444 U.S. 111, 117–18 (1979)). 

“Both § 2401(b) and its legislative history are silent as to the meaning of 

‘accrues.’” Plaza Speedway, 311 F.3d at 1267 (quoting Arvayo v. United States, 766 

F.2d 1416, 1419 (10th Cir. 1985)). Section 2401(b) serves “to require the reasonably 

diligent presentation of tort claims against the Government,” and like other statutes of 

limitations, it reflects the “legislative judgment that it is unjust to fail to put the adversary 

on notice to defend within a specified period of time, and that the right to be free of stale 
14 

claims in time comes to prevail over the right to prosecute them.” Arvayo, 766 F.2d at 

1418–19 (quoting Kubrick, 444 U.S. at 123) (internal quotation marks omitted). 

The general accrual rule for FTCA claims is the “injury-occurrence rule,” where 

the tort claim accrues on the date of injury. Plaza Speedway, 311 F.3d at 1267. In 

exceptional cases, however, the “discovery rule” applies to “protect plaintiffs who are 

blamelessly unaware of their claim because the injury has not yet manifested itself or 

because the facts establishing a causal link between the injury and the medical 

malpractice are in the control of the tortfeasor or otherwise not evident.” Plaza 

Speedway, 311 F.3d at 1267 (quoting Diaz v. United States, 165 F.3d 1337, 1339 (11th 

Cir. 1999)) (internal quotation marks omitted). In these cases, the date of accrual is when 

that reasonably diligent plaintiff knows or should have known of both the existence of 

and cause of the injury. Id.; Cannon, 338 F.3d at 1190. 

We hardly question that this is an exceptional case where the discovery rule 

applies. Ms. Bayless’ injury occurred in 1997 when she worked as a range technician 

near the Dugway and Tooele Army bases in Utah, whose apparently undisclosed 

weapons testing exposed her to sarin or other nerve agents. At the time of that 

occurrence, Ms. Bayless had no reason to suspect the nature of the injury about to befall 

her, let alone its cause. As such, “contrary to Congressional intent, strict application of 

the occurrence rule here would deny [Ms. Bayless her] right to compensation under the 

FTCA.” Plaza Speedway, 311 F.3d at 1268. 

Starting with the episodic numbness and blurred vision in October 1997, and as 

each symptom of her injury revealed itself, Ms. Bayless would develop knowledge of an 
15 

ever-worsening injury. But, at least initially, Ms. Bayless had no knowledge of Dugway 

or Tooele to connect her time spent near them to her injury. From the time she first saw a 

doctor in February 1998 after her initial symptoms did not dissipate, however, Ms. 

Bayless persevered in her search for an answer despite dead end after dead end. 

The question before us then is at what point during this long search did Ms. 

Bayless know or should she have known of the causal link between her condition and the 

Army’s activities. Ms. Bayless contends on appeal that the two-year limitations period 

began to run no earlier than February 2007 when she received the positive cholinesterase 

test results from Dr. Rea. That theory, says the government, ignores the teaching of 

Plaza Speedway. 

In Plaza Speedway we applied the discovery rule to an FTCA toxic tort case where 

the Army’s activities at an airfield adjacent to the claimants’ racetrack contaminated the 

property’s groundwater and soil. Speedway’s owners purchased the property in 1989 

with knowledge of the Army’s chemical operations but, despite this knowledge, did not 

test its wells or seek any environmental assessment. In April 1993, the Kansas 

Department of Health and Environment (“KDHE”) tested the well water following an 

application from the owners for public use of the property’s water. Four months later an 

environmental geologist from the remedial section of KDHE telephoned the property 

owners and discussed potential chemical contamination on the Speedway premises. Id. 

That geologist followed up with an October 18, 1993 letter indicating that hazardous 

substances were present in the groundwater and soil. The owners filed their 

administrative claim on October 13, 1995. 
16 

We held there that the geologist’s phone call in August 1993 started the clock for 

the statute of limitations. 311 F.3d at 1271. In doing so we emphasized three antecedent 

facts that, when combined with that telephone call, should have given the owners “reason 

to suspect the source might have been the neighboring property” and then to initiate 

inquiry into “any possible harm”: (1) the owners knew that contamination testing by the 

KDHE occurred in April 1993; (2) the owners knew at the time of purchase of the 

property that the Army had been testing various chemicals on the adjacent airfield; and 

(3) the property had no other neighbors than the Army airfield. Id. at 1270–71. 

The facts in Ms. Bayless’ case are rather different. Unlike the owners in Plaza 

Speedway whose options for suspicion could have pointed only to its sole neighbor, Ms. 

Bayless had more than a handful of potential “suspects” wreaking havoc on her body. 

And unlike the owners in Plaza Speedway, Ms. Bayless did not sit back idly, with 

knowledge of the government’s activities and without taking any action to inquire into 

the source of her injury. 

The government stresses that Ms. Bayless failed to pursue certain leads, including 

Dr. Nicolson’s suggestion to take a PCR test, Dr. Nicolson’s reference to Gulf War 

Illness and Major Lynch, and Mr. Queen’s mention of the Institute of Orthomolecular 

Medicine.5

 Ms. Bayless, however, made a conscious choice at the time against taking the 

 

5

 Ms. Bayless suggests in her briefing—for the first time—that this Institute of 

Orthomolecular Medicine does not even exist, while noting that Ms. Bayless had by that 

time sought out Dr. Nicolson from the Institute of Molecular Medicine. The government 

suggests on the other hand that this lead, had Ms. Bayless pursued it, might have led her 

to Dr. Rea’s sarin toxicity diagnosis earlier because his title is Director of Orthomolecular 

Health-Medicine. Compare Appellant Br. 12 n.3 with Appellee Br. 9 n.3. Unfortunately 
17 

PCR test because its accuracy was debated—indeed, a PCR test administered in 2006 by 

Dr. Mangum returned no fruitful results. 

As for the other references, the test for accrual does not require that a plaintiff 

pursue every possible clue to its end in order to be deemed a reasonably diligent plaintiff. 

See Arvayo, 766 F.2d at 1422 (question of reasonable diligence is an objective one). In 

fact, within a decade Ms. Bayless had seen as many medical professionals as others might 

see in a lifetime, and she traveled throughout the country to do so. On advice from those 

physicians, neurologists, chiropractors, nutritionists, and other professionals, Ms. Bayless 

passed through theories on ischemic attacks, multiple sclerosis, an Epstein-Barr infection, 

a neck-related condition, heavy metal poisoning, uranium exposure, a seizure-related 

condition, a systemic yeast infection, and was even told by more than one doctor that her 

symptoms were entirely psychosomatic. To hold that Ms. Bayless must have followed 

every word of advice from every professional to be deemed reasonably diligent would 

change her legal duty into an absurd herculean task. 

Despite her diligence, Ms. Bayless remained unaware of even the existence of the 

Army sites at Dugway and Tooele until early 2005. According to the government, upon 

this discovery in 2005, Ms. Bayless became not only armed with the critical facts 

regarding the activity that occurred Dugway and Tooele, but she had already received 

direction from her doctors that should have connected the cause and injury. The 

 

for Ms. Bayless, her failure to raise the issue below means that the Court now has nothing 

in the record that speaks to the existence or nonexistence of the Institute of 

Orthomolecular Medicine—nor for that matter anything that speaks to a connection 

between such an Institute and Dr. Nicolson or Dr. Rea. 
18 

government relies on the following pieces of evidence that Ms. Bayless had by that time: 

first, Ms. Bayless’ research on Dugway and Tooele; second, Ms. Bayless’ conversations 

with “Pauly” and Mr. Harris about suspicions of their own exposure to biological or 

chemical weapons; third, Mr. Queen’s prior “organophosphate pesticide toxicity” 

diagnosis in 20036

 as well as his intimations at a “secondary toxin . . . due to nerve 

agents, etc.” in his February 1, 2005 email; and finally, most significantly, Ms. Bayless’ 

own statement in her May 4 letter to Mr. Queen that she was “pretty sure” sarin 

poisoning was to blame for her condition. 

The crux of this case, however, lies in whether a legal distinction exists between 

one’s own suspicion that something is a cause and the requisite objective knowledge that 

begins the accrual clock. An example from the Seventh Circuit makes the point that 

subjective suspicion is not necessarily enough. 

In Stoleson v. United States, 629 F.2d 1265(7th Cir. 1980), the plaintiff, an 

employee in an Army munitions plant, suffered a heart attack in 1968 and suspected that 

it was related to her workplace exposure to nitroglycerin. Her condition was diagnosed, 

however, as a myocardial infarction caused by vascular spasm triggered by temporary 

withdrawal from nitroglycerin; and her treating physician told her that exposure to 

 

6

 According to the government, this is the same diagnosis that Dr. Rea later gave in 2007. 

Nevertheless, not only did Ms. Bayless have no reason to tie that to activities at Dugway 

or Tooele in 2003 when she had no knowledge of their existence, but she also testified, to 

the contrary, that she understood Mr. Queen’s diagnosis in 2003 to mean that she had 

been exposed to some sort of lawn pesticide. In any event, Ms. Bayless had followed Mr. 

Queen’s detoxification regimen for this exposure to no avail and only stopped when she 

discovered from Dr. Remington that she had begun to suffer from chronic renal failure. 
19 

nitroglycerin was not the cause. She nevertheless requested (unsuccessfully) a transfer to 

a work area free from nitroglycerin, and she continued to experience periodic angina 

attacks until her employment was terminated in 1971. 

Meanwhile, her suspicion of a nitroglycerin connection continued. In the spring of 

1969 she read an article suggesting that sudden withdrawal from nitroglycerin can cause 

angina chest pains. Later that year an occupation safety inspector told her that he 

believed her heart problems were caused by exposure to nitroglycerin, though he was 

unaware of any medically recognized causal relation. But her personal physicians 

confirmed the previous assessment, and the facility continued to assure her that her 

suspicions were groundless. 

In April 1971, a cardiologist examined her and concluded that her cardiovascular 

problems were related to nitroglycerin exposure. Later he went further and, based on the 

plaintiff’s case and other case histories, published an article documenting for the first 

time the relationship between angina and chronic exposure to nitroglycerin. 

Notwithstanding the cardiologist’s opinion, however, the facility’s doctor was 

unconvinced, and the plaintiff ultimately was discharged as unable to work. 

The plaintiff filed her administrative claim on August 16, 1972, and after striking 

out there, filed suit under the FTCA. In granting the government’s motion to dismiss the 

district court found, among other things, that if the discovery rule applied, her claim 

accrued in November 1969—more than two years before she filed her administrative 

claim—when she read the article and spoke to the safety inspector. 
20 

The Seventh Circuit reversed. “A layman’s subjective belief, regardless of its 

sincerity or ultimate vindication, is patently inadequate to go to the trier of fact.” 

Stoleson, 629 F.2d at 1270. Because medical science did not at that time recognize the 

causal connection, “[t]o fix the time of accrual at this time would provide [plaintiff] with 

nothing more than a delusive remedy.” Id. Only in 1971, when the cardiologist 

documented the relationship between occupational exposure to nitroglycerin and angina, 

informed the plaintiff of his findings, and also informed her of their relevance to her 

medical problems did her suspicion ripen into knowledge sufficient to trigger the running 

of the two-year limitations period. Id. at 1270–71; see also Rosales v. United States, 824 

F.2d 799, 805 (9th Cir. 1987) (“Ordinarily, a plaintiff cannot be expected to discover the 

general medical cause of his injury even before the doctors themselves are able to do 

so.”); Nicolazzo v. United States, 786 F.2d 454, 456 (1st Cir. 1986) (“It was only when 

[the plaintiff] received a correct diagnosis . . . that the factual predicate of his injury . . . 

became known to him.”); Osborn v. United States, 918 F.2d 724, 733 (8th Cir. 1990) 

(rejecting the government’s argument that the plaintiff’s mother should have known the 

cause of plaintiff’s seizure “when the doctors, including specialists . . . had not yet 

reached a conclusion”); Harrison v. United States, 708 F.2d 1023, 1028 (5th Cir. 1983) 

(statute tolled because “[i]t would be unreasonable to hold [a plaintiff] to a higher degree 

of medical competence and understanding than the many medical experts she 

consulted.”). 

 Stoleson is distinguishable. There is no indication in the facts here that medical 

science did not recognize a connection between exposure to nerve agents and symptoms 
21 

such as those of Ms. Bayless before she saw Dr. Rea in 2007. The point, however, is that 

what Ms. Bayless had before that time was a lay person’s suspicion. While in some 

circumstances that might be sufficient to trigger the statute, it cannot do so here when the 

context is considered. 

In early 2005, Ms. Bayless did, of course, know of the existence of the Army 

bases. She suspected, at times, that their activities caused her injuries. But when she 

followed up on her suspicions with various professionals she received, if anything, 

objective medical results to the contrary. And it was not just one doctor who turned Ms. 

Bayless away. She received three empirical results from three different doctors, all 

evincing what appeared to be the objective truth that Dugway and Tooele were not to 

blame. First there was a negative acetylcholine test in early May 2005 by Dr. Moody, 

notably administered around the same time that she wrote she was “pretty sure” that sarin 

gas exposure was the cause of her condition. Next, Ms. Bayless was treated with 

huperzine between July and October 2005, but to no avail despite Mr. Queen’s assurance 

that it would neutralize the effects of sarin nerve gas. Last there was the negative PCR 

test for biological weapons exposure conducted by Dr. Mangum in December 2006. 

The objective indicia seemed to point to a conclusive “no” for chemical and 

biological weapons exposure, and Ms. Bayless wholly dropped the idea of biological or 

chemical agent exposure.7

 Instead she pursued treatment with Dr. Montague throughout 

 

7

 In Kubrick the Court held that the two year statute of limitations was triggered by the 

plaintiff’s knowledge (based on medical opinion) of his injury (hearing loss) and its cause 

(neomycin administered in a prior surgery), not when he later was informed by another 

doctor that the administration of the drug was malpractice. 444 U.S. at 118–22. Armed 
22 

2006 on a theory that she suffered from a candida infection. Once again, the new theory 

failed, and her evidence is that it was not until her consultation with Dr. Rea and the 

ensuing cholinesterase test8

 in February 2007 that she knew that her suspicions were 

valid. 

The government posits that if we were to conclude that Ms. Bayless’ claim did not 

accrue until she found Dr. Rea, it could lead the statute of limitations in many cases to 

“be deferred indefinitely while the prospective claimant searched for some physician 

willing to connect her condition with government activity.” Thus, “the weaker the 

plaintiff’s claim, the longer the accrual of the claim would likely be deferred.” Appellee 

Br. 34. But merely because a cause is more difficult to determine medically does not 

make that claim legally weaker. The purpose of the discovery rule inquiry is to 

recompense the reasonable diligence of an enduring plaintiff despite a scientifically or 

 

with knowledge of the injury and its cause, a diligent plaintiff could protect himself by 

seeking medical and legal advice, and if appropriate, pursuing a claim. Id. at 123–24. 

The Court found that Mr. Kubrick was not diligent in pursuing his legal rights after he 

knew the cause of his hearing loss. But contrary to the Kubrick facts, Ms. Bayless did not 

unreasonably delay seeking medical or legal advice. On the contrary, she sought 

professional opinions time and again. Also unlike in Kubrick, she did not know the cause 

of her injury by May 2005. Whereas Mr. Kubrick had been told by a physician that the 

cause of his condition was the administration of neomycin, Ms. Bayless had only a lay 

suspicion, and her suspicion was in fact contradicted by contemporaneous tests and 

professional advice. As the Court recognized in Kubrick, there is a difference between “a 

plaintiff’s ignorance of his legal rights and his ignorance of the fact of his injury or its 

cause.” Id. at 122. 

8

 The District Court opinion stated that “Dr. Rea administered a test for acetylcholine, 

which had been negative when Dr. Moody tested it in 2005.” App. 193–94. This, 

however, is incorrect. Dr. Rea’s June 2007 report indicates that her February 5, 2007 

results for a “Cholinesterase Panel” showed results of “low Cholinesterase Serum and 

Plasma.” Id. at 120. The report does not show that a separate test for acetylcholine was 

performed. 
23 

medically challenging claim. One might equally worry that under the government’s 

view, conspiracy theorists would run to the nearest courthouse to file futile suits for every 

injury they suspect had been caused by the government’s activities—even where that 

suspicion is based on anecdotes from strangers and Internet gossip, even where that 

suspicion is repeatedly refuted by objective, medical documentation to the contrary. The 

discovery rule for accrual should not serve to reward those who tilt at windmills but yet 

snub reasonable and diligent plaintiffs. 

To be clear, our holding today does not upend precedent in this Circuit or others 

that “compelling” or “certain” proof of a cause is not a requirement before accrual may 

begin. See, e.g., Kronisch v. United States, 150 F.3d 112, 123 (2d Cir. 1998); Nemmers 

v. United States, 795 F.2d 628, 631 (7th Cir. 1986). Nor does a plaintiff in every case 

need medical or scientific confirmation of a cause before the statute of limitation begins. 

We only opine with respect to the facts of Ms. Bayless’ case that, after confronting 

demonstrable evidence debunking her own suspicions, she cannot be charged as a matter 

of law with knowledge under the discovery rule. We hold only that, reviewing the 

evidence in the light most favorable to Ms. Bayless, her administrative claim was timely 

filed. 

Alternatively, Ms. Bayless argues that the district court erred as a matter of law in 

holding that the doctrine of equitable tolling did not apply to FTCA claims. Because we 

reverse on grounds that Ms. Bayless’ claims had not accrued by the date of her filing her 

administrative claim, we need not reach whether the district court erred in holding that 

the doctrine of equitable estoppel did not apply. 
24 

Accordingly, we REVERSE the district court’s dismissal for lack of subjectmatter jurisdiction and REMAND for further proceedings consistent with this opinion.