Mest v. Cabot Corp. , 449 F.3d 502 ( 2006 )


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  •                                                                                                                            Opinions of the United
    2006 Decisions                                                                                                             States Court of Appeals
    for the Third Circuit
    5-31-2006
    Mest v. Cabot Corp
    Precedential or Non-Precedential: Precedential
    Docket No. 04-4457
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    Recommended Citation
    "Mest v. Cabot Corp" (2006). 2006 Decisions. Paper 988.
    http://digitalcommons.law.villanova.edu/thirdcircuit_2006/988
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    PRECEDENTIAL
    UNITED STATES COURT OF APPEALS
    FOR THE THIRD CIRCUIT
    No. 04-4457
    MERRILL MEST; BETTY MEST; SUE HALLOWELL
    (Individually and as Trustee of the Trust);
    WAYNE HALLOWELL (Individually and as Trustee of the
    Trust); SEAN HALLOWELL; AMBER HALLOWELL a minor,
    by her next friend and parent, Wayne Hallowell); THE
    HALLOWELL FARMS PARTNERSHIP; THE WAYNE Z.
    HALLOWELL FAMILY REVOCABLE TRUST,
    Appellants,
    v.
    CABOT CORPORATION;
    CABOT PERFORMANCE MATERIALS,
    Appellees.
    On Appeal from the United States District Court
    for the Eastern District of Pennsylvania
    (D.C. No. 01-cv-04943)
    District Judge: Honorable Cynthia M. Rufe
    Argued November 8, 2005
    Before: ROTH, FUENTES, and GARTH, Circuit Judges.
    (Opinion Filed May 31, 2006)
    Gary A. Bryant (Argued)
    Willcox & Savage, P.C.
    One Commercial Place
    1800 Bank of America Center
    Norfolk, VA 23510
    Michael C. Davis
    Peter K. Killough
    Carter Ledyard & Milburn LLP
    1401 Eye Street, NW
    Suite 300
    Washington, DC 20005
    ATTORNEYS FOR APPELLANTS
    Neil S. Witkes (Argued)
    Manko, Gold, Katcher & Fox LLP
    401 City Avenue
    Suite 500
    Bala Cynwyd, PA 19004
    ATTORNEY FOR APPELLEES
    ____
    OPINION OF THE COURT
    FUENTES, Circuit Judge.
    Wayne and Suzanne Hallowell and Merrill and Betty Mest
    are dairy farmers whose cows suffered from various ailments over
    the course of twenty years before being diagnosed with fluorosis in
    1999.1 Upon learning the cause of their cows’ symptoms, the
    1
    Fluorosis is a disease caused by fluoride poisoning. It can
    cause damage to cows in the form of mottled and blackened teeth,
    2
    Hallowells and the Mests sued Cabot Corporation and Cabot
    Performance Materials (collectively, “Cabot”) alleging, among
    other things, that Cabot engaged in the systematic poisoning of
    their dairy cows and farmland over several decades. Specifically,
    they claim that the hydrogen fluoride Cabot released from a nearby
    factory poisoned the vegetation upon which their livestock fed, and
    that Cabot fraudulently misled the plaintiffs to believe that the
    emissions were harmless. The District Court, concluding that the
    plaintiffs failed to exercise reasonable diligence to discover the
    cause of their cows’ symptoms, granted summary judgment
    dismissing all of the plaintiffs’ claims stemming from conduct that
    occurred prior to November 10, 1998, as time-barred. The District
    Court also dismissed the plaintiffs’ claims of fraud and negligence
    per se, and held that the plaintiffs were not entitled to damages for
    emotional distress. We conclude that, because there exists a
    material issue of fact as to whether the plaintiffs exercised
    reasonable diligence in determining the cause of their cows’
    symptoms, the plaintiffs’ claims are not time-barred. Accordingly,
    we vacate in part, affirm in part, and remand for further
    proceedings.
    I. Facts
    The Hallowells and the Mests, together with certain other
    plaintiffs, own and operate dairy farms (the “Hallowell farms” and
    the “Mest farm,” respectively) in Boyertown, Pennsylvania. The
    plaintiffs’ farms are located one to four miles from a facility (the
    “Cabot Facility”) owned and operated by Cabot.2
    As early as 1972, the Hallowells began to notice disturbing
    symptoms in their dairy cows. The cows were not producing milk
    as expected and suffered from a variety of physical problems for
    which the Hallowells could find no explanation. The Hallowells
    consulted dairy farm specialists, including their veterinarians,
    teeth that fall out, poor and decreased milk production and
    conception rates, skeletal abnormalities, abortions, stillbirths,
    lameness, and death.
    2
    On a motion for summary judgment we look at all facts in
    the light most favorable to the non-moving party. See Morton Int’l,
    Inc. v. A.E. Staley Mfg. Co., 
    343 F.3d 669
    , 680 (3d Cir. 2003).
    3
    nutritionists, breeders, and an agricultural extension agent. Over
    the course of the next two decades, the Hallowells were given
    various pieces of advice from these experts, which they followed
    diligently. When Wayne Hallowell suspected radiation poisoning,
    he administered iodine to counteract it. The Hallowells altered the
    cows’ nutritional program upon the advice of nutritionists. When
    they were advised that the problems might be chemical in nature,
    the Hallowells tested for several chemicals, although they did not
    initially test for fluoride. All the chemical tests came back
    negative. The Hallowells sent blood samples to experts at
    Michigan State University and were told that the results were
    normal. The Hallowells also installed a new air ventilation system
    and, after their veterinarian suggested that their cows’ drinking
    water might be contaminated, they installed a new drinking water
    system. None of these efforts cured the cows of their ailments.
    At some point during the 1970s, the Hallowells noticed a
    strange smell emanating from the Cabot Facility. (Joint Appendix
    (“JA”) at 1508.) They telephoned the Cabot Facility to inquire
    into the smell and whether Cabot was releasing any harmful
    emissions. (Id.) The Hallowells allege that, during these calls,
    Cabot repeatedly asserted that any emissions from Cabot were
    harmless and could not hurt the Hallowells’ dairy cows. (Id.) The
    Hallowells also allege that Cabot asserted that it carefully measured
    all emissions to ensure safety and compliance with the law.
    In 1979, Hallowell contacted the Pennsylvania Department
    of Environmental Protection (“PADER”) about the problems his
    cows were experiencing. Since 1976, PADER, together with
    Cabot, had been investigating the connection between fluoride
    emissions from the Cabot Facility and crop damage on farms
    adjacent to the Cabot Facility.3 Between 1978 and 1983, Dr.
    Donald Davis (“Davis”) of Penn State sampled forage crops on six
    dairy farms surrounding the Cabot facility, including one of the
    3
    This was not Cabot’s first study on the matter. During the
    1960s, Cabot retained Dr. Robert H. Daines to study the possibility
    that emissions from the Cabot Facility could be causing fluoride
    damage to area crops. The study concluded the fluoride pollution
    was a mild problem. (Joint Appendix (“JA”) at 192-94, 2342-49.)
    Cabot did not disclose the results of the study to area farmers.
    4
    Hallowell farms. On eight separate occasions during this period,
    PADER personnel and Davis took samples of the forage crops on
    one of the Hallowell farms. (JA at 632, 662.) Davis’s resulting
    reports (the “Davis Reports”), published in the early 1980s, discuss
    the symptoms of fluorosis and note that fluorosis is “of serious
    concern to farmers located near sources of fluoride.”
    (Supplemental Appendix (“SA”) at 4-5.) The initial report
    identifies samples of leaves taken from the fence row of the
    Hallowell farms as having a higher fluoride concentration than
    those of the town area. (SA at 9-10, 22.) The report concludes,
    among other things, that the levels of fluoride “warrant[ed]
    consideration that the disease ‘fluorosis’ might occur in cattle fed
    the fluoride contaminated material.” (SA at 4-5.) However,
    PADER did not inform Hallowell of the study or the Davis
    Reports.4
    The Hallowells continued to enlist several experts in order
    to determine the cause of their cows’ problems. In 1996, the
    Hallowells consulted Tim Fritz (“Fritz”), the County Extension
    Agent, in their investigation. Fritz contacted experts from the
    University of Pennsylvania New Bolton Center (“New Bolton”) to
    evaluate the Hallowells’ problem. After its investigation (the
    “New Bolton study”), New Bolton specifically ruled out fluoride
    as the cause of the cows’ symptoms. (JA at 1512.) Although New
    Bolton could not determine the cause of the cows’ illness, it
    suggested that the problem was most likely farm-specific, having
    to do with the mats in the cows’ stalls. Hallowell responded by
    building a new barn with new mats in the stalls. In 1998, Hallowell
    enlisted the aid of the Environmental Protection Agency (the
    “EPA”) which, after conducting tests, concluded that the problem
    was farm-specific and not environmental.
    During the course of the New Bolton testing, Hallowell
    4
    After the Davis Reports were submitted to PADER, Cabot
    requested that PADER keep the results of the reports confidential.
    (JA at 18, 182-83, 206, 213, 2242.) PADER refused the request.
    Although it did not release the Davis Reports to the farms
    neighboring the Cabot Facility, PADER’s policy was that it would
    provide the reports to anyone who requested them. (JA at 1979-96,
    2242.)
    5
    phoned Cabot for information about possible contaminants from
    the Cabot Facility. Hallowell asked Cabot if something might be
    wrong with his drinking water because of Cabot’s activities. Cabot
    assured Hallowell that there was no danger with regard to his
    water. Hallowell also inquired into possible radiation danger, and
    again Cabot assured him there was no danger. Cabot admits that,
    during the course of the conversation, it may have assured
    Hallowell that there was no danger from the Cabot Facility’s
    fluoride emissions, that they monitored their fluoride emissions
    closely to ensure they were at safe levels for crops and animals, and
    that the emissions were not in sufficient quantities to harm his
    cows. (JA at 448.)
    Meanwhile, as early as 1980, Merrill Mest (“Mest”) began
    noticing problems with his dairy cows, including mottled teeth, low
    milk production, an unusual number of aborted pregnancies, and
    breeding problems. (JA at 2171.) Mest consulted his veterinarian,
    agricultural extension agent, and nutritionist, some of whom
    concluded that bacteria in the cows’ rumen were being killed but
    did not know why.5 On the advice of their nutritionist, Dr. Carl
    Brown (“Brown”), the Mests tried nutritional solutions.
    By 1982, the symptoms had not abated and no one had been
    able to provide the Mests with a definitive diagnosis. The Mests’
    agricultural extension agent and Brown suggested that fluoride
    might be the cause of the problems. Based on this advice, Mest
    hired experts from Pennsylvania State University (“Penn State”):
    Dr. Richard Adams (“Adams”), a nutritionist, and Dr. Larry
    Hutchinson (“Hutchinson”), a veterinarian. Brown, Adams, and
    Hutchinson discussed the possibility that fluoride might be the
    cause of the cows’ symptoms, and decided to analyze feed samples
    for fluoride. The Penn State study analyzed the feed samples at
    two different laboratories and performed a fluoride analysis on
    bone ash from a calf on the Mest farm. As a result of their
    investigation, Adams and Hutchinson did not reach a definitive
    diagnosis, but did conclude that the Mests’ cows did not suffer
    from fluorosis. (JA at 2172.) After informing Mest of this,
    5
    The rumen is the first of four chambers in a cow’s stomach.
    It contains various microbes that break down grass and hay,
    making it digestible.
    6
    however, Hutchinson sent Mest an additional letter dated January
    5, 1983, reporting that the fluoride content of the bone ash sample
    was “at least marginally high” and recommending that fluoride
    “should be studied in any new outbreak of problems.” (JA at 777.)
    Mest denies that he ever received this letter and, indeed, the copy
    of the letter in the record is not properly addressed to the Mests.6
    (JA at 143, 777, 2006, 2172.)
    Over the course of the next decade, the Mests continued in
    vain to search for the cause of their cows’ symptoms. Mest had
    weekly or monthly consultations with his nutritionist, veterinarian,
    and agricultural extension agent. He also routinely tested his cows
    for infections. On two separate occasions in the mid-1980s, Mest
    brought sick calves for evaluations at a state laboratory in
    Summerdale, Pennsylvania. In the late 1980s or early 1990s, Mest
    contacted PADER about his problems. He had his water and feed
    tested by PADER and the EPA, but the results were normal. None
    of these attempts yielded a definitive diagnosis.
    In March 1999, Bill Smedley (“Smedley”), an
    environmental investigator for the nonprofit organization
    GreenWatch Inc. (“GreenWatch”), heard about the problems on the
    Mest and Hallowell farms and contacted the farmers. The Mests
    and the Hallowells agreed to pay GreenWatch to conduct a limited
    investigation. During the course of its investigation, GreenWatch
    reviewed PADER’s files and obtained the Davis Reports.
    GreenWatch also retained the services of Dr. Lennart Krook
    (“Krook”) of Cornell University. After conducting various tests on
    the cows, Krook diagnosed the Mests’ cows and the Hallowells’
    cows with fluorosis, contracted by eating contaminated vegetation.
    After this diagnosis, the parties entered into a
    Tolling/Standstill Agreement, under which the statute of limitations
    was tolled from December 31, 1999 until September 30, 2000.
    Less than one year later, on August 10, 2001, the plaintiffs brought
    this action against Cabot seeking damages arising from the alleged
    systematic poisoning of their dairy cows through fluoride
    emissions that contaminated the area’s vegetation, and from the
    6
    The letter was addressed to “Rd 2, Keyser Rd.,
    Schwenksville, PA,” which was not the Mests’ address. (JA at
    143, 777.)
    7
    alleged fraudulent misrepresentations and omissions regarding the
    safety of Cabot’s emissions. The plaintiffs also brought claims for
    trespass, nuisance, negligent interference with business, outrageous
    conduct, and negligence per se.
    After the completion of discovery, the District Court granted
    summary judgment dismissing all of the plaintiffs’ claims based on
    Cabot’s activities prior to November 10, 1998, as barred by the
    two-year statute of limitations. Mest v. Cabot Corp., No. Civ.A.01-
    4943, 
    2004 WL 945131
    , at *10 (E.D. Pa. Apr. 29, 2004). In a
    subsequent opinion, the District Court also granted summary
    judgment with respect to the plaintiffs’ fraud claims and claims for
    negligence per se, and held that the plaintiffs were not entitled to
    damages for emotional distress under Pennsylvania law. Mest v.
    Cabot Corp., No.Civ.A. 01-4943, 
    2004 WL 1102754
    , at *4-6 (E.D.
    Pa. May 14, 2004). The plaintiffs now appeal these rulings.
    II. Discussion
    A. Statute of Limitations
    Because this is a diversity action, we look to Pennsylvania
    law to determine whether the District Court properly dismissed the
    plaintiffs’ actions for failure to comply with the statute of
    limitations.7 See Bohus v. Beloff, 
    950 F.2d 919
    , 924 (3d Cir.
    1991). The statute of limitations for each of the claims alleged in
    the plaintiffs’ Second Amended Complaint is two years. 42 Pa.
    Cons. Stat. Ann. § 5524. The two-year period begins as soon as
    the injury is sustained. 
    Bohus, 950 F.2d at 924
    . “[L]ack of
    knowledge, mistake or misunderstanding do not toll the running of
    the statute of limitations.” Pocono Int’l Raceway, Inc. v. Pocono
    Produce, Inc., 
    468 A.2d 468
    , 471 (Pa. 1983).
    Pursuant to this rule, the statute of limitations on the
    7
    We exercise plenary review over the District Court’s grant
    of summary judgment. See Turner v. Hershey Chocolate U.S., 
    440 F.3d 604
    , 611 (3d Cir. 2006). Our review must determine whether
    “the pleadings, depositions, answers to interrogatories, and
    admissions on file, together with the affidavits, if any, show that
    there is no genuine issue as to any material fact and that the moving
    party is entitled to a judgment as a matter of law.” Fed. R. Civ. P.
    56(c).
    8
    plaintiffs’ claims began to accrue when the plaintiffs’ cows
    contracted fluorosis. The Hallowells’ cows began demonstrating
    symptoms as early as 1972, while the Mests’ cows began
    demonstrating symptoms around 1980. The plaintiffs argue,
    however, that the statute of limitations should be tolled until their
    cows were actually diagnosed with the disease fluorosis by Krook
    in 1999. The plaintiffs cite two bases under Pennsylvania law for
    tolling the statute of limitations: 1) the discovery rule, and 2)
    Cabot’s alleged fraudulent concealment. We address these
    arguments separately.
    1. Tolling Pursuant to the Discovery Rule
    a. The Discovery Rule
    The discovery rule is designed to “ameliorate the
    sometimes-harsh effects of the statute of limitations,” and it is often
    applied in medical malpractice and latent disease cases in which
    the plaintiff is unable to discover his or her injury until several
    years after the tort occurred. Cathcart v. Keene Indus. Insulation,
    
    471 A.2d 493
    , 500 (Pa. Super. 1984). The discovery rule tolls the
    accrual of the statute of limitations when a plaintiff is unable,
    “despite the exercise of due diligence, to know of the injury or its
    cause.” Pocono Int’l 
    Raceway, 468 A.2d at 471
    . Under the rule,
    even if a plaintiff suffers an injury, the statute of limitations does
    not begin to run until “the plaintiff knows, or reasonably should
    know, (1) that he has been injured, and (2) that his injury has been
    caused by another party’s conduct.” Debiec v. Cabot Corp., 
    352 F.3d 117
    , 129 (3d Cir. 2003) (internal quotation marks and citation
    omitted). For the statute of limitations to run, a plaintiff need not
    know the “exact nature” of his injury, as long as it objectively
    appears that the plaintiff “is reasonably charged with the
    knowledge that he has an injury caused by another.” Ackler v.
    Raymark Indus., Inc., 
    551 A.2d 291
    , 293 (Pa. Super. 1988).
    As we have explained, the discovery rule focuses not on
    “the plaintiff’s actual knowledge, but rather on ‘whether the
    knowledge was known, or through the exercise of diligence,
    knowable to’” the plaintiff. 
    Bohus, 950 F.2d at 925
    (quoting
    O’Brien v. Eli Lilly & Co., 
    668 F.2d 704
    , 711 (3d Cir. 1981)). A
    plaintiff therefore is obligated “to exercise reasonable diligence in
    ascertaining the existence of the injury and its cause.” 
    Id. (internal quotation
    marks omitted). As soon as the plaintiff either has
    9
    discovered or, exercising reasonable diligence, should have
    discovered the injury and its cause, the statute of limitations begins
    to run. 
    Id. Moreover, the
    plaintiff attempting to apply the
    discovery rule bears the burden of demonstrating that he exercised
    reasonable diligence in determining the existence and cause of his
    injury. Cochran v. GAF Corp., 
    666 A.2d 245
    , 249 (Pa. 1995). To
    demonstrate reasonable diligence, a plaintiff must “establish[] that
    he pursued the cause of his injury with those qualities of attention,
    knowledge, intelligence and judgment which society requires of its
    members for the protection of their own interests and the interests
    of others.” 
    Id. at 250
    (internal quotation marks and citations
    omitted).
    The plaintiffs argue that the statute of limitations should be
    tolled by the discovery rule because they were unable to discover
    the cause of their injury until 1999 despite their exercise of
    reasonable diligence. The plaintiffs concede that they were aware
    of their injuries more than two years prior to the date they brought
    their claims. However, the plaintiffs argue that, despite their
    exercise of reasonable diligence, they were unable to ascertain the
    cause of their cows’ symptoms until 1999, and therefore were
    unable to determine who caused their injuries. The plaintiffs argue
    that under the discovery rule the statute of limitations was therefore
    tolled until 1999, when Dr. Krook rendered his diagnosis that their
    cows suffered from fluorosis.
    To support their argument, the plaintiffs cite 
    Debiec, 352 F.3d at 120-23
    , in which we addressed when the statute of
    limitations begins to run for a plaintiff that has a disease that has
    been misdiagnosed. In Debiec, Jane Debiec (“Debiec”) had
    allegedly died of berylliosis caused by exposure to beryllium from
    the defendants’ plant. 
    Id. at 120-21.
    When Debiec, suspecting
    beryllium as the cause of her illness, consulted a doctor about her
    symptoms, her doctor told her that beryllium was probably not to
    blame and diagnosed her with another illness. 
    Id. at 121-23.
    The
    defendants argued that Debiec’s reliance on her doctor’s
    misdiagnosis, despite her suspicions to the contrary, did not
    constitute reasonable diligence as a matter of law. We agreed with
    the defendants that a definitive diagnosis of a plaintiff’s injury is
    not necessary for the statute of limitations to start running. 
    Id. at 132.
    We determined, however, that a definitive diagnosis that a
    plaintiff does not have a particular disease, and thus that the
    10
    defendant is not the cause of her injury, may be sufficient in some
    cases to overcome the plaintiff’s suspicions that she has a particular
    injury. 
    Id. In other
    words, a negative diagnosis may lead the
    plaintiff to reasonably believe that she does not have an injury
    caused by the defendant, and thus toll the statute of limitations.
    We therefore held that there was a material issue of fact as to
    whether Debiec exercised reasonable diligence in determining the
    cause of her injury. 
    Id. at 136.
            The plaintiffs contend that our holding in Debiec supports
    their argument that they exercised reasonable diligence because,
    like in Debiec, both the Mests and the Hallowells received
    diagnoses indicating that their injuries were not caused by the
    defendants. The Mests argue that the 1982 diagnosis from Penn
    State was sufficient to relieve any suspicions that Cabot’s fluoride
    emissions were the cause of their cows’ symptoms. The Mests
    argue that, as in Debiec, this potential misdiagnosis, along with
    their other actions, at least raises a material issue of fact as to
    whether they exercised reasonable diligence in determining the
    cause of their cows’ symptoms. Similarly, the Hallowells argue
    that the 1996 New Bolton diagnosis ruling out fluoride as a
    potential cause of their cows’ symptoms was, together with the
    other actions they took, sufficient to raise a material issue of fact
    as to whether they exercised reasonable diligence in ascertaining
    the cause of their injury.
    b. The District Court Decision
    The District Court rejected the plaintiffs’ arguments that the
    discovery rule should be applied, concluding that, as a matter of
    law, neither the Mests nor the Hallowells had exercised reasonable
    diligence in determining the cause of their injury. Although
    whether a plaintiff has exercised reasonable diligence is generally
    a factual question reserved for the jury, the District Court relied on
    the exception we have carved out for situations in which “the facts
    are so clear that reasonable minds cannot differ” as to whether the
    plaintiffs exercised reasonable diligence. Mest, 
    2004 WL 945131
    ,
    at *5 n.40 (citing 
    Bohus, 950 F.2d at 924
    ; 
    Cochran, 666 A.2d at 248
    ). The District Court found that, taking the evidence in the light
    most favorable to the plaintiffs, “no reasonable jury could conclude
    that the Mests or Hallowells have satisfied [the] heavy burden” of
    demonstrating reasonable diligence. 
    Id. at *5.
    11
    We disagree with this conclusion. In our view, the actions
    taken by the Mests and the Hallowells, together with the
    misdiagnoses that eliminated fluoride as the cause of their cows’
    symptoms, raise a material issue of fact as to whether each party
    exercised reasonable diligence in determining the cause of their
    injury. We will address the Mests and the Hallowells separately.
    c. The Mests
    To determine whether the Mests exercised reasonable
    diligence, we must examine 1) whether the Mests exercised
    reasonable diligence before the 1982 Penn State study, 2) whether,
    under Debiec, the Mests were reasonable in relying on the Penn
    State study to relieve their suspicions that their injuries were
    caused by Cabot, and 3) if so, whether, in light of their reliance on
    the Penn State study, they exercised reasonable diligence.
    Before consulting the experts at Penn State, the Mests
    consulted several other experts. As described above, upon first
    noticing his cows’ symptoms, Mest consulted his veterinarian,
    agricultural extension agent, and nutritionist. Mest was told that
    the problem was with his cows’ digestive systems, and he was
    advised to attempt nutritional solutions. Mest followed this advice
    and, when he did not see favorable results, he consulted new
    experts at Penn State. After extensive testing, the experts
    concluded that fluoride was not the cause of the cows’ illness, but
    they were unable to provide a definitive diagnosis as to what the
    cause was. We conclude that a reasonable juror could find that the
    Mests’ actions leading up to the Penn State study constituted
    reasonable diligence.
    We next consider the Mests’ contention that they were
    reasonable in relying on the Penn State study ruling out fluorosis
    to overcome their initial suspicions that fluorosis might be the
    cause of their cows’ symptoms. As explained above, in Debiec we
    held that, although the statute of limitations begins to run when a
    plaintiff suspects he has an injury caused by another, a negative
    diagnosis ruling out the speculative injury may be sufficient to
    overcome that suspicion. 
    Debiec, 352 F.3d at 132
    . Thus, a
    diagnosis ruling out the possibility that the plaintiff’s injury was
    caused by another may, in effect, toll the statute of limitations
    under the discovery rule because it may lead the plaintiff to
    reasonably believe that his injury was not caused by the defendant.
    12
    The plaintiffs argue that, under Debiec, the Penn State study may
    have led them to reasonably believe that their cows did not suffer
    from fluorosis caused by the Cabot Facility. Therefore, the
    plaintiffs argue, there is at least a material issue of fact as to
    whether the Mests exercised reasonable diligence in ascertaining
    the cause of their injury after they received this diagnosis.
    We agree with the plaintiffs. Here, as in Debiec, the Mests
    noticed their injury and suspected that the defendants’ actions were
    to blame. As in Debiec, the Mests sought the advice of medical
    experts, who, after performing tests, assured the Mests that the
    suspected culprit was not the cause of the cows’ symptoms. As
    explained above, the Mests allege that they never received the
    subsequent letter from Penn State notifying them that fluoride
    might be the cause of future problems, and there is evidence in the
    record that this letter was not correctly addressed to them. (JA at
    143, 777, 2006, 2172.) Viewing the facts in the light most
    favorable to the plaintiffs, we accept as true the Mests’ contention
    that they never received this letter and that they were therefore left
    with the diagnosis that fluoride was not the cause of their cows’
    symptoms. A reasonable juror could find that the plaintiffs acted
    reasonably in turning their inquiry elsewhere.
    We find unconvincing the distinctions the District Court
    drew between this case and Debiec. The District Court noted that
    Debiec’s reliance on her personal physician’s diagnosis was
    inherently more reasonable than the plaintiffs’ reliance on the
    diagnoses of veterinarians or scientists because a personal
    physician has a stronger relationship of trust with a patient than a
    veterinarian or scientist has with a farmer. Mest, 
    2004 WL 945131
    , at *7. The distinction between a patient’s relationship
    with her doctor and a farmer’s relationship with a veterinarian or
    scientist is irrelevant for the purposes of demonstrating reasonable
    reliance under Debiec where, we held, the reliance was reasonable
    “as long as the plaintiff retains confidence in the doctor’s
    professional abilities.” 
    Debiec, 352 F.3d at 132
    . In the context of
    this case, a veterinarian or animal scientist plays the same role as
    a doctor by using professional medical and scientific expertise to
    interpret symptoms and diagnose a cause. In fact, farmers arguably
    rely more on the professional abilities of veterinarians and animal
    scientists than patients rely on their doctors because farmers can
    only observe the objective symptoms of their animals and must rely
    13
    on veterinarians and animal scientists to interpret those objective
    symptoms, whereas human patients know what they are
    experiencing and can describe it to their doctors.8
    We also disagree with the District Court’s finding that
    Debiec is inapplicable to this case because here there was no
    definitive diagnosis of the cows’ illness. The important point in
    Debiec was not that the doctor diagnosed the wrong disease, but
    that the doctor ruled out the actual disease that would have
    implicated the defendant. See 
    Debiec, 352 F.3d at 132
    (stating that
    statute of limitations may be tolled where “a doctor affirmatively
    tells a claimant that she does not have a certain disease and
    therefore that the defendant was not the cause of her injury”).
    The District Court also distinguished this case from Debiec
    by noting that the Mest herd involved numerous different cows
    throughout the period the herd demonstrated symptoms, and
    therefore the Mests could not have reasonably relied on a negative
    diagnosis at one particular time. The fact that the herd consisted of
    different cows with the same symptoms throughout the years after
    the 1982 negative diagnosis does not imply that the Mests were
    unreasonable in continuing to believe that fluoride was not the
    cause of the cows’ symptoms. A reasonable juror could conclude
    that the Mests made the fair assumption that, because their new
    cows showed symptoms identical to those of their old cows, there
    existed a common cause to these symptoms. Such a reasonable
    juror also could conclude that, having ruled out fluoride as the
    cause, the Mests reasonably directed their search toward other
    chronic problems on the farm that might have caused these
    8
    Moreover, the District Court’s reliance on the close and
    lengthy relationship between patients and doctors would exclude
    those patients who do not have the opportunity to form such a
    relationship with a doctor. Patients do not always form a long-term
    and close relationship with specialist doctors in particular due to,
    for example, the fact that patients may seldom need to see
    specialists or lack adequate insurance coverage to see them
    regularly. Yet, because of their expertise, these specialists are the
    very doctors in whom patients must often place the most trust. The
    District Court’s reasoning would appear to find this trust inherently
    unreasonable, a conclusion that we cannot support.
    14
    symptoms.
    The District Court also appears to have found the Mests’
    reliance on the Penn State study unreasonable because of evidence
    that, despite the results of the study, Merrill Mest continued to
    suspect his cows had fluorosis. Mest, 
    2004 WL 945131
    , at *7.
    The District Court based this conclusion on Betty Mest’s
    deposition testimony that Merrill told her that there was fluoride
    contamination on the property two to three years after the results
    of the Penn State test. 
    Id. However, the
    nature of Betty Mest’s
    testimony is in dispute; later in the deposition she corrected herself
    and stated that her husband did not make that statement, and that
    she had been confused by the question. (JA at 782-86.) While the
    credibility of Betty Mest’s retraction may be disputed, on a motion
    for summary judgment we must look at all facts in the light most
    favorable to the non-moving party. See Morton 
    Int’l, 343 F.3d at 680
    . Therefore, we cannot, as the District Court did, assume that
    Merrill Mest suspected fluoride contamination on his farm after the
    Penn State study based on Betty Mest’s contradictory testimony.
    Given that, under Debiec, the Mests may have reasonably
    relied on the 1982 Penn State study to alleviate their suspicions that
    their cows had fluorosis, we consider next whether the Mests’
    actions after 1982 constituted reasonable diligence in light of their
    reliance on the Penn State study. As we have held, a misdiagnosis
    does not relieve a patient of all responsibility in pursuing the cause
    of her symptoms, and continued reliance on a misdiagnosis in the
    face of contrary evidence may be unreasonable. 
    Bohus, 950 F.2d at 930
    (holding that doctor’s assurances that plaintiff does not have
    particular injury may toll statute of limitations until that “point in
    time when a patient’s own ‘common sense’ should lead her to
    conclude that it is no longer reasonable to rely on the assurances of
    her doctor”); see also 
    Debiec, 352 F.3d at 131-32
    (citing Bohus).
    Given that the Mests did not receive a definitive diagnosis and
    continued to experience problems with their herd, they would not
    have exercised reasonable diligence had they simply ended their
    inquiry after the 1982 Penn State study.
    The Mests, however, did not end their inquiry with the Penn
    State study. On the contrary, Mest continued to consult his
    nutritionist, veterinarian, and agricultural extension agent on a
    weekly or monthly basis to determine the cause of the symptoms,
    15
    and he routinely tested the cows for infections. He sought help
    twice from a state laboratory. He had his water and feed tested by
    both PADER and the EPA. This careful investigation demonstrates
    that the Mests continued to exercise what a reasonable juror might
    determine to be reasonable diligence in light of the Penn State
    study up until the 1999 diagnosis of fluorosis.
    In sum, we hold that a material issue of fact exists as to
    whether the Mests exercised reasonable diligence sufficient to toll
    the statute of limitations under the discovery rule until the 1999
    diagnosis by Dr. Krook.
    d. The Hallowells
    We disagree with the District Court’s finding that the
    Hallowells conducted little or no investigation into their cows’
    symptoms between 1972 and 1996. As described above, the
    Hallowells consulted dairy farm specialists, including
    veterinarians, nutritionists, breeders, and an agricultural extension
    agent. Suspecting radiation poisoning, Hallowell administered
    iodine to his cows. Upon the advice of nutritionists, the Hallowells
    altered the cows’ nutritional program. Upon the advice that the
    problem might be chemical, they administered chemicals tests.
    The Hallowells contacted PADER and sent blood samples to
    experts at Michigan State University. The Hallowells installed a
    new air ventilation system and, upon the advice of their
    veterinarian, a new drinking water system. Given these numerous
    and varied efforts, a reasonable juror could conclude that the
    Hallowells exercised reasonable diligence to determine the cause
    of their cows’ symptoms.
    We also find that the 1996 New Bolton study may have lead
    the Hallowells to reasonably conclude that fluorosis was not the
    cause of their cows’ symptoms. Like the Mests, the Hallowells
    noticed their injury and sought the advice of medical experts, who,
    after performing tests, assured the Hallowells that fluoride was not
    to blame. Therefore, for the reasons explained above, there is a
    material fact issue as to whether the 1996 New Bolton study led the
    Hallowells to reasonably believe that the defendants were not the
    cause of their injury.
    Given that, under Debiec, the Hallowells may have
    reasonably relied on the 1996 New Bolton study, we next consider
    16
    whether the Hallowells’ actions after the New Bolton study
    constituted reasonable diligence. As we previously stated,
    continued reliance on a misdiagnosis in the face of contrary
    evidence may be considered unreasonable as a matter of law. See
    
    Bohus, 950 F.2d at 930
    ; 
    Debiec, 352 F.3d at 132
    . Here, however,
    when their cows’ symptoms did not subside despite the New
    Bolton Center’s advice, the Hallowells continued to investigate
    their cows’ illness by consulting the EPA. The EPA’s tests – like
    those of the New Bolton Center – concluded that the cause was
    farm-specific and not environmental. Thus, until the 1999
    diagnosis by GreenWatch, the Hallowells made continued efforts,
    which only confirmed the New Bolton study’s conclusion that the
    cause was farm-specific and not caused by Cabot. Therefore, a
    reasonable juror could certainly find that the Hallowells exercised
    reasonable diligence following the 1996 New Bolton study.
    We also disagree with the District Court that the Hallowells
    did not exercise reasonable diligence as a matter of law because of
    their failure to obtain the Davis Reports. Both the Hallowells and
    the Mests contacted PADER regarding their problems and were not
    told of the reports. Furthermore, not one of the experts the
    Hallowells and the Mests consulted found the reports until
    GreenWatch’s investigation in 1999. These circumstances, we
    believe, raise at least a material issue of fact as to how easily these
    reports could have been obtained and whether reasonable diligence
    required the Hallowells to obtain them.
    In sum, we hold that a material issue of fact exists as to
    whether the Hallowells exercised reasonable diligence sufficient to
    toll the statute of limitations under the discovery rule.
    2. Tolling Due to Cabot’s Alleged Fraudulent Concealment
    The plaintiffs also argue that the statute of limitations should
    be tolled because Cabot fraudulently concealed the cause of the
    plaintiffs’ injury. Pennsylvania’s fraudulent concealment doctrine
    tolls the statute of limitations where “through fraud or concealment
    the defendant causes the plaintiff to relax vigilance or deviate from
    the right of inquiry.” Ciccarelli v. Carey Canadian Mines, Ltd.,
    
    757 F.2d 548
    , 556 (3d Cir. 1985). The plaintiffs allege that, during
    the Hallowells’ discussions with representatives of the Cabot
    Facility in the 1970s and 1996, Cabot concealed its knowledge
    about potential fluoride contamination and misled the Hallowells
    17
    through its assurances that fluoride from the Cabot Facility could
    not be the cause of their cows’ injuries. Specifically, the
    Hallowells allege that Cabot told them that there was no danger
    from the Cabot Facility, that Cabot monitored its fluoride
    emissions closely to ensure they were at safe levels for crops and
    animals, and that the emissions were not in sufficient quantities to
    harm the Hallowells’ cows. (JA at 448.) The plaintiffs argue that,
    because Cabot knew of the Davis Reports when it made these
    misrepresentations, its actions constitute fraudulent concealment
    sufficient to toll the statute of limitations.
    The District Court rejected this argument, holding that it
    was unreasonable for the plaintiffs to rely on any statements made
    by Cabot. Like the discovery rule, the fraudulent concealment
    doctrine does not toll the statute of limitations where the plaintiff
    knew or should have known of his claim despite the defendant’s
    misrepresentation or omission. 
    Bohus, 950 F.2d at 925
    -26. Where
    common sense would lead the plaintiff to question a
    misrepresentation, the plaintiff cannot reasonably rely on that
    misrepresentation. 
    Id. at 925.
    The District Court held that, here,
    “it was not reasonable for Plaintiffs to rely on the statements of a
    company they suspected of poisoning their cow herds” and that “it
    was unreasonable for Plaintiffs to continue to rely on those
    statements when their cows continued to have problems.” Mest,
    
    2004 WL 945131
    at *9.
    In our view, whether Cabot’s assurances caused the
    Hallowells to reasonably believe that their problems were not
    caused by Cabot is an issue best decided by a fact-finder.
    Generally, where reasonable minds can disagree, questions of
    whether fraudulent remarks were made and whether the plaintiff
    was reasonable in relying on them or continuing to rely on them are
    left to the jury. See Fine v. Checcio, 
    870 A.2d 850
    , 862 (Pa. 2005)
    (question of what statements were actually made by defendant was
    best answered by jury); Drelles v. Mfrs. Life Ins. Co., 
    881 A.2d 822
    , 832 n.6 (Pa. Super. 2005) (“[I]t is for the jury to say whether
    fraudulent remarks actually were made.”); Crown Cork & Seal Co.
    v. Montgomery, McCracken, Walker & Rhoads, LLP, No. 03185,
    
    2003 WL 23120185
    , at *3 (Pa. Com. Pl. 2003) (whether plaintiff
    reasonably relied on defendants’ allegedly false statements was
    question of fact best decided by jury). We conclude that rational
    jurors could find that it was reasonable for the Hallowells to rely on
    18
    the statements made by Cabot.
    However, we note that the Mests may not assert the doctrine
    of fraudulent concealment to toll the statute of limitations. The
    record on appeal does not disclose any communication between the
    Mests and Cabot or that Cabot made potentially misleading
    statements to the Mests as it did to the Hallowells. Under the
    doctrine of fraudulent concealment, “[t]here must be an affirmative
    and independent act of concealment that would divert or mislead
    the plaintiff from discovering the injury.” 
    Bohus, 950 F.2d at 925
    .
    Silence can constitute fraud only where there is an affirmative duty
    to disclose because of a fiduciary relationship between the parties
    or a similar relationship of trust and confidence. Chiarella v.
    United States, 
    445 U.S. 222
    , 227-28 (1980); Sevin v. Kelshaw, 
    611 A.2d 1232
    , 1236 (Pa. Super. 1992); Smith v. Renaut, 
    564 A.2d 188
    , 192 (Pa. Super. 1989).
    We disagree with the plaintiffs’ argument that Cabot had a
    duty to disclose the existence of the Davis Reports to the Mests.
    This argument implies that Cabot had an affirmative duty to
    disclose to all area farmers, without their inquiry, the existence of
    public reports that raised possible concerns for the farmers. The
    plaintiffs offer no precedent suggesting such a duty; rather, they
    cite cases regarding the duty of care in a negligence action. See,
    e.g., Miller v. Group Voyagers, Inc., 
    912 F. Supp. 164
    , 167 (E.D.
    Pa. 1996); Snyder v. ISC Alloys, Ltd., 
    772 F. Supp. 244
    , 253
    (W.D. Pa. 1991); Venzel v. Valley Camp Coal Co., 
    156 A. 240
    ,
    242 (Pa. Super. 1931). These cases do not demonstrate that a
    relationship of trust existed between Cabot and the Mests such that
    Cabot’s failure to disclose the existence of the Davis Reports
    constituted fraudulent concealment. Moreover, the plaintiffs do not
    define the parameters of this alleged duty, such as which area
    farmers were owed this duty and how long this duty persisted after
    the Davis Reports were published as, presumably, new farmers
    moved into the area. We cannot find that such a sweeping duty
    exists under Pennsylvania law.
    B. Fraud Claims
    The plaintiffs assert claims for fraud and fraudulent
    misrepresentation and concealment. These claims are the same
    claims of fraud that they argue tolled the statute of limitations. The
    District Court dismissed these claims on the same grounds it
    19
    dismissed the claims of tolling based on fraud; specifically, it found
    that the plaintiffs could not have reasonably relied on Cabot’s
    statements. Mest, 
    2004 WL 1102754
    , at *6.
    For the reasons explained above, we hold that material
    issues of fact exist as to whether Cabot made fraudulent statements
    and whether the Hallowells reasonably relied on such statements.
    Because, however, the Mests do not allege that Cabot made any
    statements or misrepresentations to them, we affirm the District
    Court’s grant of summary judgment with regard to the Mests’
    claims of fraud and fraudulent concealment and misrepresentation.
    C. Negligence Per Se Claims
    The plaintiffs argue that the District Court erred in granting
    summary judgment dismissing their claim of negligence per se
    based on Cabot’s alleged violation of Section 4013.6(c) of the
    Pennsylvania Air Pollution Control Act (“PAPCA”), 35 Pa. Stat.
    Ann. § 4001 et seq. Under the doctrine of negligence per se, a
    violation of a statute may be grounds for finding that a defendant
    is per se liable. To assert a claim for negligence per se, the
    plaintiffs must demonstrate that: 1) the statute or regulation clearly
    applies to the conduct of the defendant; 2) the defendant violated
    the statute or regulation; 3) the violation of the statute proximately
    caused the plaintiff's injuries; and 4) the statute’s purpose is, at
    least in part, to protect the interest of the plaintiff individually, as
    opposed to the public. See Wagner v. Anzon, Inc., 
    684 A.2d 570
    ,
    574 (Pa. Super. 1996).
    We agree with the District Court that the plaintiffs’ claim
    must fail because the plaintiffs cannot demonstrate that the statute’s
    purpose is to protect the interest of the plaintiffs in particular as
    opposed to the general public. In Wagner, the Pennsylvania
    Superior Court rejected a similar negligence per se claim brought
    by neighbors against a nearby factory that they alleged had violated
    the Philadelphia Air Management Code of 1969 (the “Philadelphia
    Code”). 
    Id. at 573-75.
    After reviewing the text and legislative
    history of the Philadelphia Code, the Pennsylvania Superior Court
    concluded that the statute was “a general environmental protection
    statute that has the interests of the City community as a whole at
    the heart of its purpose.” 
    Id. at 575.
    The court also noted that “a
    statute governing air quality, by its nature, is directed to the
    20
    population in general.” 
    Id. at 575
    n.4. The court held that, as a
    general environmental protection statute, the Philadelphia Code’s
    purpose was to protect the entire community rather than the
    plaintiffs specifically. 
    Id. at 575.
    We conclude that, like the Philadelphia Code, the PAPCA
    is an environmental statute governing air quality with the purpose
    of protecting the general public rather than the plaintiffs in
    particular. The text of the PAPCA states that it is intended to
    protect the “public health, safety and well-being [of Pennsylvania]
    citizens.” 35 Pa. Stat. Ann. § 4002(a). The plaintiffs note that the
    statute also states that it is intended to prevent “injury to plant and
    animal life and to property” and to encourage the “development,
    attraction and expansion of industry, commerce and agriculture.”9
    
    Id. However, the
    se broad statements do not establish an intent to
    protect the plaintiffs as dairy farmers specifically rather than the
    population of Pennsylvania in general. Similarly, in Wagner,
    references to the “health and welfare” of Philadelphia inhabitants
    and the protection of “recreation, commerce and individual
    activity” in the statute did not indicate a specific intention to
    protect the plaintiffs. 
    Wagner, 684 A.2d at 574-75
    .
    Because the plaintiffs cannot demonstrate that the PAPCA
    was intended to protect them specifically as opposed to the general
    population, summary judgment dismissing their claim for
    negligence per se is appropriate.
    D. Emotional Distress Damages
    The plaintiffs argue that the District Court erred in finding
    9
    The plaintiffs also cite Goldsborough v. Columbia
    Borough, 
    48 Pa. D. & C. 3d
    193 (Pa. Com. Pl. 1988), in which the
    Lancaster County Court of Common Pleas held that the PAPCA
    allows a cause of action for negligence per se. 
    Id. at 198.
    However, we agree with the District Court’s reasoning that
    Goldsborough is not dispositive because the Goldsborough opinion
    gave no explanation for the court’s conclusion and has never been
    cited by another court, and because it is inconsistent with the more
    recent Wagner case. Mest, 
    2004 WL 1102754
    , at *4 n.18.
    21
    that they were not entitled to emotional distress damages for any of
    their claims. The plaintiffs allege that Cabot’s actions injured their
    cows and their livelihood, causing them to experience decades of
    emotional distress in the form of worry, headaches, chest pains,
    arm numbness, and lack of sleep. The District Court found that,
    under Pennsylvania law, a plaintiff may not recover emotional
    distress damages absent actual or potential physical injury caused
    by the defendant. Mest, 
    2004 WL 1102754
    , at *5-6. The District
    Court found that, because the plaintiffs allege no physical injury,
    they may not recover emotional distress damages. 
    Id. We agree
    with the District Court that Pennsylvania law
    permits recovery for emotional distress as a result of the
    defendant’s negligence only where the claim includes physical
    injury or in limited circumstances where the plaintiff witnesses
    injury to another. See Armstrong v. Paoli Mem’l Hosp., 
    633 A.2d 605
    , 609 (Pa. Super. 1993); Houston v. Texaco, Inc., 
    538 A.2d 502
    ,
    506 (Pa. Super. 1988); Tressler v. Priester-Hoover, 
    31 Pa. D. & C. 4th
    73, 75 (Pa. Com. Pl. 1996). Pennsylvania law does not allow
    for recovery for emotional distress damages resulting from a
    defendant’s negligent injury to property. See Brooks v. Hickman,
    
    570 F. Supp. 619
    , 619-20 (W.D. Pa. 1983); 
    Houston, 538 A.2d at 506
    ; Tressler, 
    31 Pa. D. & C. 4th
    at 75; Casey v. Pennsylvania-
    American Water Co., 
    12 Pa. D. & C. 4th
    168, 171-73 (Pa. Com. Pl.
    1990). Because the plaintiffs’ claims do not fall within these
    limitations, the plaintiffs may not recover emotional distress
    damages for their claims based in negligence.10
    10
    The plaintiffs cite Little v. York County Earned Income
    Tax Bureau, 
    481 A.2d 1194
    (Pa. Super. 1984), for the proposition
    that a plaintiff may recover emotional distress damages under
    Pennsylvania law for negligence even if the plaintiff suffers no
    physical injury. In Little, the Superior Court of Pennsylvania
    allowed the plaintiff to collect damages for “humiliation,
    degradation, and mental anguish” where the plaintiff’s reliance on
    the negligent misrepresentations of the defendant, a tax collection
    service, to the plaintiff regarding her local wage tax was the
    proximate cause of her being arrested and jailed for failure to pay
    taxes. 
    Id. at 1199,
    1202. We note, however, that the Little holding
    was explicitly limited to the facts of the case, which are quite
    22
    On the other hand, plaintiffs who allege an intentional tort
    may obtain damages for emotional distress even if they have not
    suffered physical injury. See, e.g., Papieves v. Lawrence, 
    263 A.2d 118
    , 121-22 (Pa. 1970); see also Hackett v. United Airlines, 
    528 A.2d 971
    , 974 (Pa. Super. 1987). We therefore conclude that,
    under Pennsylvania law, the plaintiffs may recover emotional
    distress damages for their claims related to fraud and trespass. See,
    e.g., Bobin v. Sammarco, No. Civ. A. 94-5115, 
    1995 WL 303632
    ,
    at *3 (E.D. Pa. May 18, 1995) (allowing emotional distress
    damages for fraud under Pennsylvania law); Tran v. Gen. Motors
    Acceptance Corp., Civ. A. No. 88-1836, 
    1989 WL 64564
    , at *2
    (E.D. Pa. Jun. 13, 1989) (allowing emotional distress damages for
    trespass under Pennsylvania law); MacGregor v. Mediq Inc., 
    576 A.2d 1123
    , 1127 (Pa. Super. 1990).
    III. Conclusion
    For the reasons stated above, we will vacate the District
    Court’s opinion in part, affirm it in part, and remand the case for
    further proceedings consistent with this opinion.
    different from those at hand. 
    Id. at 1202.
    Moreover, the
    Pennsylvania Superior Court has subsequently interpreted Little as
    a limited exception to the rule that emotional distress damages are
    not allowed for claims of negligence where the plaintiff has
    suffered no physical injury. See Rolla v. Westmoreland Health
    Sys., 
    651 A.2d 160
    , 163 & n.2 (Pa. Super. 1994); 
    Houston, 538 A.2d at 504
    & n.2.