SANDRA DORRELL VS. WOODRUFF ENERGY, INC. (L-0343-11, SALEM COUNTY AND STATEWIDE) ( 2021 )


Menu:
  •                                 NOT FOR PUBLICATION WITHOUT THE
    APPROVAL OF THE APPELLATE DIVISION
    This opinion shall not "constitute precedent or be binding upon any court ." Although it is posted on the
    internet, this opinion is binding only on the parties in the case and its use in other cases is limited. R. 1:36-3.
    SUPERIOR COURT OF NEW JERSEY
    APPELLATE DIVISION
    DOCKET NO. A-3144-17
    SANDRA DORRELL and
    SANDRA DORRELL t/a OLD
    ALLOWAY MERCHANDISE,
    Plaintiffs-Appellants/
    Cross-Respondents,
    v.
    WOODRUFF ENERGY, INC.,
    Defendant-Respondent,
    and
    GULF OIL LIMITED
    PARTNERSHIP and CHEVRON
    U.S.A.,
    Defendants-Respondents/
    Cross-Appellants,
    and
    HARLEYSVILLE GROUP, INC.,
    HARLEYSVILLE INSURANCE
    COMPANY, and FARMERS
    MUTUAL FIRE INSURANCE
    CO. OF SALEM COUNTY,
    Defendants.
    ____________________________
    Argued January 27, 2020 – Decided March 11, 2021
    Before Judges Messano, Ostrer and Vernoia.
    On appeal from the Superior Court of New Jersey, Law
    Division, Salem County, Docket No. L-0343-11.
    Louis Giansante argued the cause for appellants/cross-
    respondents (Giansante & Associates, LLC, attorneys;
    Louis Giansante, of counsel and on the briefs).
    Matthew S. Slowinski argued the cause for
    respondent/cross-appellant Chevron U.S.A. Inc. as
    successor to Gulf Oil Limited Partnership (Slowinski
    Atkins, LLP, attorneys; Matthew S. Slowinski, on the
    briefs).
    Mitchell H. Kizner argued the cause for respondent
    Woodruff Energy, Inc. (Flaster Greenberg, PC,
    attorneys; Mitchell H. Kizner, on the brief).
    Cristina Stummer argued the cause for amicus curiae
    The Fuel Merchants Association of New Jersey (Saul
    Ewing Arnstein & Lehr LLP, attorneys; M. Paige
    Berry, Cristina Stummer and Ryan L. DiClemente, of
    counsel and on the brief).
    The opinion of the court was delivered by
    OSTRER, J.A.D.
    A-3144-17
    2
    This case, which returns to us after our remand and a bench trial, involves
    claims for private contribution under the New Jersey Spill Compensation and
    Control Act (Spill Act or Act), N.J.S.A. 58:10-23.11 to -23.11z.1 Plaintiff
    Sandra Dorrell once operated a general store on a property she has owned since
    1984 in Alloway Township. In preparing to sell her property, she learned that
    petroleum products had contaminated the soil and groundwater. It was
    undisputed that kerosene or fuel oil was present. However, according to one
    plaintiff's expert, gasoline was present, too.      Dorrell claimed defendants
    Woodruff Energy, Inc. and Chevron U.S.A. Inc. (improperly named Chevron
    Corp.) were persons "in any way responsible for [the] . . . hazardous substance"
    found on her property and were "strictly liable, jointly and several ly, without
    regard to fault, for all cleanup and removal costs." N.J.S.A. 58:10-23.11g(c)(1).
    Woodruff regularly delivered fuel oil to a 1000-gallon above-ground
    storage tank (AST) in the store's dirt-floored basement. Sometime in the 1990s,
    gallons of oil spilled onto the dirt floor. Despite clean-up efforts, oil evidently
    seeped into the ground. The court found that Woodruff did not own or control
    the tank, nor did Woodruff over-fill the tank as Dorrell alleged. The spill
    1
    We previously reversed the trial's court grant of summary judgment dismissal
    on statute of limitations grounds. Dorrell v. Woodruff Energy, No. A-3585-13
    (App. Div. Sep. 30, 2015).
    A-3144-17
    3
    evidently resulted from a tank rupture. And there was an insufficient nexus
    between Woodruff and the spill to find that Woodruff was a person "in any way
    responsible" for the oil in the ground.
    In appealing the no-cause verdict on her claim against Woodruff, Dorrell
    contends the court misapplied the Spill Act by requiring her to show Woodruff
    was at fault for the tank spill. She contends that Woodruff, by delivering the
    fuel oil that spilled, was a party in any way responsible for the contamination.
    With the support of amicus, Fuel Merchants Association, Woodruff argues that
    its sale was not sufficient to trigger responsibility under the Spill Act. We agree,
    and affirm the court's verdict dismissing Dorrell's claims against Woodruff.
    Woodruff was not the only firm that delivered petroleum products to
    Dorrell's property. For many years, long before Dorrell owned the general store,
    the store sold gasoline from curbside pumps, and kerosene from inside the store.
    Dorrell alleged that Chevron's predecessor, Gulf Oil Corp., delivered gasoline
    to three underground storage tanks (USTs), including a 1000-gallon tank that
    Gulf installed in the late 1950s and then abandoned, and two older 550 -gallon
    tanks that were removed. Dorrell alleged that Gulf also delivered kerosene to
    A-3144-17
    4
    the AST that later failed.2 After the 1950s, Gulf ceased its deliveries, and
    Woodruff took its place. Gasoline sales evidently stopped altogether in the early
    1960s after the store's previous owner died.
    The trial court held that neither Chevron nor Woodruff were liable for any
    fuel oil or kerosene contamination. However, the court held that Chevron was
    likely the owner and responsible party for the 1000-gallon UST, and it likely
    once contained gasoline, which it discharged into the ground. Therefore, the
    court held that Chevron was liable under the Spill Act to investigate the tank,
    and if it confirmed that the tank once contained gasoline, then Chevron would
    be "responsible . . . for discharges and to remediate, if necessary under the
    applicable regulations, the gasoline contamination" on and off the site. But, if
    Chevron could demonstrate, after a remedial investigation, that the tank did not
    contain gasoline, its "responsibility would end." After the trial judge retired,
    another judge denied Chevron's motion for a judgment notwithstanding the
    verdict, or a new trial.
    Chevron cross-appeals on several grounds.       It contends there was no
    competent evidence of gasoline in the ground or groundwater; and the court
    2
    Thus, two 1000-gallon tanks are involved in this case: an AST in the basement
    that was removed in the 1990s; and a UST extant beneath the sidewalk.
    A-3144-17
    5
    relied on the net opinion of an expert unqualified to identify petroleum
    contaminants, or to opine about causation of contamination. Chevron also
    contends it is not liable because it does not own the 1000-gallon UST. We are
    constrained to agree that the trial court never found Hopkins qualified to render
    the opinions he offered at trial, nor did he demonstrate that his methodology was
    reliable. We therefore remand for a finding on the admissibility of his opinion.
    I.
    It is unchallenged on appeal that Dorrell's property is contaminated with
    fuel oil or kerosene from the failure of the basement AST. Experts for Dorrell,
    Woodruff, and Chevron all chemically analyzed samples drawn from soil
    borings and wells near the tank, and north of it, in the direction that groundwater
    flowed. A hydrocarbon fingerprinting expert for Dorrell, Bruce Torkelson,
    identified the contaminant as a "weathered m[iddle] distillate" which was "19
    [years old] plus or minus two years." Torkelson said it was probably kerosene,
    but fuel oil was also a middle distillate; gasoline was not. Woodruff's expert in
    contaminant identification and age dating, William Silverstein, P.E., agreed with
    Torkelson's opinion that the soil and water samples contained kerosene.
    Chevron's sole witness, Dr. Joseph Lifrieri, was qualified as an expert in
    geological environmental engineering, fingerprinting, and age dating.           Dr.
    A-3144-17
    6
    Lifrieri concluded the samples showed a "fuel oil, diesel-type of contamination"
    of the site.
    It is also undisputed on appeal that Dorrell owned the 1000-gallon AST
    that leaked petroleum product onto the ground. After Dorrell and her late
    husband purchased the property, they installed an oil-fed furnace (replacing a
    coal-fed one) and utilized the pre-existing 1000-gallon tank for the fuel oil,
    which they purchased from Woodruff. In the mid-1990s, Dorrell installed a new
    275-gallon fuel-oil AST. Woodruff was not responsible for maintaining either
    tank.3
    The genuine factual controversy on appeal pertains to the court's finding
    that Dorrell's property was also contaminated with gasoline from the 1000-
    gallon UST. The trial court relied on Dorrell's sole expert witness on gasoline
    contamination — Craig Hopkins, a licensed site remediation professional who
    holds a bachelor's degree in Earth Sciences.
    3
    A significant part of trial testimony pertained to Dorrell's claim that
    contamination also came from Woodruff's overfilling the 275-gallon tank that
    she installed to replace the old tank in the late 1990s. Woodruff denied the over-
    fill allegation, and presented evidence that it never employed the two persons
    Dorrell identified by name as being involved in the alleged overfill and its
    cleanup. A Woodruff witness testified instead that Dorrell called Woodruff for
    help after she discovered a pool of oil in her basement, which emanated from a
    failure of the 1000-gallon tank. On appeal, Dorrell does not challenge the court's
    fact-finding that the basement spill resulted from the rupture and not an overfill.
    A-3144-17
    7
    Unlike the other experts who testified, Hopkins was not qualified to
    identify petroleum products based on chromatographic studies or hydrocarbon
    fingerprinting. He held a degree in earth science. He was a licensed site
    remediation professional (LSRP). See N.J.S.A. 58:10C-1 to -29. He had been
    involved in as many as 1000 site investigations, most involving petroleum
    hydrocarbons. However, he had never testified as an expert.
    He admitted he was not an expert in age dating. He also admitted that he
    "sent out samples to determine the type of contaminant" because that was not
    his "expertise." He relied on laboratories to identify contaminants. He also
    stated he had never testified about the cause of a release.
    Dorrell's counsel offered Hopkins "as an expert in subsurface
    investigation, particularly of petroleum hydrocarbons." Counsel explained that
    would include identifying contaminants and their source. He asserted that
    LSRPs typically determine whether contamination originated on or off site.
    The court qualified Hopkins as an expert in investigating subsurface
    conditions. But, responding to Chevron's motion in limine, the court held
    Hopkins was not qualified to identify a specific contaminant, because he
    "indicated that he can't identify the specific contaminant . . . [and] has to send
    that out for testing."   Also, absent "more foundation," the court withheld
    A-3144-17
    8
    qualifying him as an expert on proximate cause, although the court left open the
    possibility he could be qualified later. But, the court did not expressly revisit
    the issue of Hopkins's qualifications to opine about causation.
    Nonetheless, over Chevron's objection, the court permitted Hopkins to
    opine, based on what amounted to circumstantial evidence, that gasoline was
    present on the site, gasoline contamination was caused by discharges from the
    UST, and the UST was installed by Gulf.
    In reaching his opinion, Hopkins relied in part on his understanding of
    how the prior owners used the property, and where they located gasoline
    dispensers, pumps, and USTs. Hopkins based that understanding in part on
    documents and contracts between Gulf and the prior owner, which Dorrell found
    in the store's basement; on multiple historic maps; and on his surveys of the
    present site, including technology to locate USTs.       He also relied on his
    interpretation of chemical analyses of samples from wells and soil-borings,
    although none of those analyses included opinions that the samples contained
    gasoline.4
    4
    The historic maps were "Sanborn maps." The Sanborn Map Company
    prepared detailed maps of municipalities for use by fire insurers. As gasoline
    USTs would be a hazard of interest to fire insurers, Sanborn usually noted them
    on its maps. One witness testified the same was not true of fuel oil USTs.
    A-3144-17
    9
    The site is located on the northwest corner of West Main Street, runni ng
    east-west, and Greenwich Street, running north-south. Hopkins stated that the
    old general store sold gasoline from two curbside dispensers in front of the store,
    along West Main Street. Two underground tanks were once located on the same
    side of the property, near the dispensers. An old lease between Gulf and the
    prior owner referred to two 550-gallon USTs and pumps. Sales receipts referred
    to Gulf's delivery of two brands of gasoline. Hopkins concluded the two 550-
    gallon USTs and pumps were later removed, as his survey could not locate them,
    but they were not removed at the same time. There was also no sign of the
    above-ground dispensers, which Dorrell said did not exist when she purchased
    the property.
    But, Hopkins's survey located a 1000-gallon UST under the sidewalk
    along Greenwich Street, on the east side of the property.         He also located
    underground piping connecting the tank to the house, as opposed to the area of
    the old dispensers. Yet, Hopkins ultimately opined that the large UST stored
    gasoline. He relied in part on a 1958 contract in which Gulf agreed to install
    and lease to the prior owner a 1080-gallon UST. That was around the same time
    that a document referred to one of the 550-gallon tanks as "leaky." He concluded
    that the referenced 1080-gallon tank must be the 1000-gallon tank he located
    A-3144-17
    10
    along Greenwich Street. A 1955 agreement between Gulf and the store's prior
    operator included a hand-written notation, "1 - 1000 gal Tank - installed 1958"
    among the list of equipment that Gulf loaned and installed on the premises. 5
    Chevron's expert, Lifrieri, opined that the piping indicated that the tank
    did not store gasoline; rather, it stored a petroleum product that was either used
    or sold inside the store. Besides, Lifrieri stated, if the tank were intended for
    gasoline, it would have been located much closer to the dispensers on West Main
    Street. Noting that a relatively new 1080-gallon tank retained significant value,
    Lifrieri suggested that Gulf installed its 1080-gallon UST close to the
    dispensers, and then removed it after the store ceased gasoline sales in the early
    1960s.
    Evidently, a 1959 Sanborn map did not indicate there was a 1000-gallon
    tank along Greenwich Street. At trial, Hopkins acknowledged that he explained
    5
    The 1955 agreement between Gulf and the store's prior owner governed the
    retail sale of petroleum products and loaned and installed certain identified
    equipment, included "2 - 550 Gal. Tanks." The form was pre-printed and
    included type-written inserts dating it and identifying the leased equipment. The
    court ruled that the handwritten words, "One Leaking Tank Taken out" with an
    arrow pointing to the type-written entry "2- 550 Gal. Tanks" was inadmissible
    hearsay, and not admissible for the truth of the matter asserted; but the experts
    could rely on it. However, the court found as fact that a 1000-gallon tank was
    installed in 1958. Around 1958, the store turned from selling two brands of Gulf
    gasoline to one, resulting in the need for just one gasoline storage tank.
    A-3144-17
    11
    the omission in a pre-trial report by noting that Sanborn maps did not show
    private fuel oil tanks. In other words, Hopkins had previously inferred that the
    1000-gallon UST was a fuel oil tank, not a gasoline tank. 6
    Although the court had previously barred Hopkins from identifying the
    particular petroleum product found on site, the court allowed him to opine that
    gasoline was found in soil and water samples just north of the Greenwich Street
    UST. Hopkins asserted that a forensic lab analysis of the sort performed on the
    samples near the AST and north of the building — where the experts identified
    the particular type of petroleum product based on analysis of chromatograms
    and other methodologies — was unnecessary when analyzing what he called
    "dissolved phase samples" — by which he meant, petroleum products that had
    dissolved in groundwater. Instead, Hopkins stated he could base his opinion on
    the constituent chemicals found in the samples, such as total lead and four other
    chemicals — benzene, toluene, ethyl benzene and xylene — known collectively
    6
    The 1959 Sanborn map is not in the record before us. Therefore, we cannot
    ascertain if it included the 1080-gallon gasoline tank that Gulf evidently
    installed in 1958. And, neither party presented documentary evidence regarding
    the installation of the Greenwich Street UST. Particularly because the tank is
    located under the public sidewalk, public records conceivably may have
    referenced the tank's installation.
    A-3144-17
    12
    as BTEX. He said the four chemicals are "markers in a volatile run that's being
    done when you're targeting gasoline."
    Chevron's counsel objected that Hopkins was not qualified to identify
    gasoline, and that BTEX is found in "all petroleum hydrocarbons." In particular,
    Lifrieri testified that fuel oil also contains BTEX.7 Notwithstanding the court's
    earlier ruling, the court allowed Hopkins to offer his opinion, stating "I can reject
    it later if it turns out I shouldn't have it in evidence."
    Based on the contamination near the 1000-gallon UST, Hopkins opined
    "there . . . was a release of petroleum hydrocarbons. There were some signatures
    in the analysis that could indicate fuel oil, could indicate[] gasoline, could
    indicate kerosene. The total lead indicated that it was likely that there was a
    leaded gasoline release." He stated that based on "all the results, the soil, the
    field readings, the soil results, the groundwater results, [and] the groundwater
    flow direction . . . that the source of the release is from . . . either one or both of
    the tanks that were present in the southeast corner of the property." He opined
    the release occurred sometime between the 1920s and the 1970s.
    7
    He explained that gasoline would present differently from fuel oil in a
    chromatogram. However, no one analyzed chromatograms of the samples taken
    close to the 1000-gallon UST.
    A-3144-17
    13
    Hopkins contended that lead concentrations increased "as you go across
    the site." The highest lead readings were found in test wells in the northern end
    of the property, beyond the north side of the building, but Hopkins asserted that
    the groundwater generally flowed in the direction of that well. 8 He also noted
    that a test well near the northwest corner of the 1000-gallon UST had elevated
    concentrations of volatile, tentatively identified compounds (TICs), total
    alkanes, and total lead. Hopkins stated that his conclusion was also supported
    by field readings he took near the UST. The results of his soil borings and field
    tests led him to rule out "a near surface release," such as from the dispensers.
    Hopkins acknowledged that samples from the test well along the curb on
    West Main Street, near where gasoline was once dispensed, did not indicate
    elevated levels of lead. That finding, he opined, indicated that the contamination
    on the site did not come from off-site sources to the south. 9 Samples from soil
    borings near the old 550-gallon tanks were also below regulatory standards or
    8
    However, the forensic lab that fingerprinted a sample from that test well
    opined that the contaminant was weathered diesel fuel, not gasoline.
    9
    Samples from another test well about forty feet to the west and near the
    southern property line had lead readings almost as high as those near the 1000 -
    gallon UST.
    A-3144-17
    14
    non-detectable. Over objection, Hopkins asserted that contaminated soil may
    have been removed along with the tanks, which would explain the low readings.
    Hopkins also conceded that he did not "actually know" what was stored in
    the Greenwich Street UST; he never inspected the tank and had no evidence of
    any holes or leaks. He also conceded that "total lead" is a common metal found
    in soil and groundwater; "organic lead" by contrast is the type of lead found in
    old leaded gasoline; yet, Hopkins did not test for organic lead. Hopkins asked
    a forensic lab to search for multiple components of leaded gasoline when testing
    samples from the north side of the building — which turned out to be negative
    for gasoline — but did not request such testing of the samples near the alleged
    gasoline tank.10 Hopkins also acknowledged that soil borings next to the test
    10
    In particular, an expert for plaintiff, Alan Jeffrey, Ph.D., testified in a de bene
    esse deposition introduced at trial that someone searching for leaded gasoline
    would test for six compounds found in "certain leaded gasolines" — tetramethyl
    lead (TML), trimethylethyl lead (TMEL), dimethyldiethyl lead (DMDEL),
    methyltriethyl lead (MTEL), tetraethyl lead (TEL), and methylcyclopentadienyl
    manganese tricarbonyl (MMK). In particular, TEL was used as an anti-knock
    agent in leaded gasoline before 1960. Jeffrey testified that Pace tested for the
    six chemicals in the samples from the AST and from a well on the north of the
    property and concluded no gasoline was present. He was not asked to perform
    similar tests of samples taken closest to the Greenwich Street UST. The trial
    court ultimately barred Jeffrey's ultimate identification that the petroleum
    product in the samples he analyzed was weathered diesel— because he provided
    insufficient explanation. However, the court did not bar Jeffrey's general
    comments on the chemicals identified with leaded gasoline.
    A-3144-17
    15
    well near the northwest corner of the Greenwich Street UST showed no lead or
    BTEX levels above regulatory standards.
    Woodruff's and Chevron's counsel repeatedly objected to Hopkins's
    qualifications to opine as to the cause of the contamination. Dorrell's counsel
    responded that Dorrell was not obliged to prove that the gasoline "came from
    the tank versus the appurtenances" so long as he opined that it came from the
    "closed system" including the tank, the pump, the dispenser, or human spills.
    Defense counsel insisted that Hopkins was not qualified to render even that
    opinion. The court allowed Hopkins to offer his opinion, stating he would
    "figure out" later if Hopkins had "the qualification to be able to say it's Gulf."
    II.
    Over four separate days, the trial judge orally reviewed the testimony and
    provided his findings of fact and conclusions of law on the record. The court
    found that a 1955 agreement between Gulf and the old store operator, established
    that Gulf owned the two 550-gallon tanks; they did not become part of the real
    estate; and the operator was obliged to maintain them. A handwritten addendum
    indicated a "leaky tank" was removed, and a 1,000-gallon tank installed in its
    place in 1958. The court found that the second 550-gallon tank was also
    removed, but the date was uncertain.
    A-3144-17
    16
    Based on the various sales documents, the court found that the two 550-
    gallon tanks stored two different brands of gasoline, not kerosene or fuel oil.
    Nonetheless, the court noted that Gulf delivered large quantities of kerosene in
    1949. And in 1960, Woodruff delivered hundreds of gallons of kerosene and
    hundreds of gallons of a single brand of gasoline — leading the court to conclude
    that at that time, two tanks must have been in use to store those products.
    The court was unable to reconcile the discrepancy between the references
    to a 1,000-gallon tank and a 1,080-gallon tank in the Gulf documents. The court
    acknowledged the possibility there were two separate tanks installed on the
    premises around the same time.
    The court reviewed the testimony from Lifrieri and Torkelson, noting they
    found fuel oil or kerosene, but neither one found evidence of gasoline in the
    samples they analyzed. The court found that "a very significant finding in the
    case as it relates to Gulf's exposure." The court found there was insufficient
    evidence in the record to connect defendants with fuel oil or kerosene
    contamination.
    Regarding fuel oil, the court did not hold Gulf liable, as there was nothing
    in the record to show it owned fuel oil tanks on the site. The court also declined
    A-3144-17
    17
    to find Woodruff liable. The court concluded there was no nexus between
    Woodruff's filling of the tank and the discharge from the tank leak.
    As for kerosene, the court acknowledged that Gulf and then Woodruff,
    delivered kerosene to the site before Dorrell bought it. The court found it
    reasonably likely the kerosene was delivered to the AST in the basement.
    However, there was simply no evidence "that necessarily links Gulf or Woodruff
    to the discharge, to the contamination" that was found "in the ground." 11
    The court then turned to gasoline.     The court analogized the task of
    determining the nature and source of the contamination to a differential medical
    diagnosis. The court observed, "we just don't know what was stored" in the
    Greenwich Street tank; and no one tested its contents. The court acknowledged
    evidence tending to show that the tank was not used for gasoline, including that
    pipes from the tank led to the house. However, the court concluded that "if that
    tank was used for gasoline," then Gulf likely owned it based on the gasoline
    sales, and retained ownership to the present day.
    11
    The court also found no connection between defendants and coal
    contamination. Two experts had mentioned coal as a source of the lead found
    in the samples. However, plaintiff had not advanced that theory of liability, and
    thus provided no evidence upon which a court could rely.
    A-3144-17
    18
    Having established ownership, the court turned to the question of
    contamination. It examined the chemical analyses of the samples taken from
    various soil borings and test wells. The court concluded, as did Hopkins (and
    only Hopkins), that gasoline contamination was present, and the contamination
    demonstrated that the Greenwich Street tank contained gasoline. Although the
    court noted that no one had excluded off-site sources, he relied on the following
    findings: the soil boring samples just north of the Greenwich Street UST showed
    the presence of ethylbenzene, xylene (total), total TIC Volatile and total alkanes,
    although only the ethylbenzene level exceeded regulatory standards; samples
    from the test well about twenty feet north of the UST had xylene, total TICs and
    total alkanes above standards; and test well samples near the northwest corner
    of the UST included levels of TICs, alkanes and lead above standards. 12 The
    court found that the presence of lead meant the presence of gasoline, stating
    "look, lead gasoline, got lead being shown." The court added, "persuasive on
    [the court's] differential diagnosis is the fact of gasoline that was stored on this
    site and the fact that somebody owned a tank that that lead would have been
    stored in that's other than Ms. Dorrell."
    12
    The court cited Silverstein's testimony for the proposition that the total TICs
    and lead from this well's samples indicated potential leaking from the UST.
    A-3144-17
    19
    The court acknowledged that at the well at the north end of the property,
    far from the UST, there were also high levels of lead, benzene and TICs. The
    court stated, "TIC's are . . . relevant to gasoline." 13 The court recognized that
    "lead isn't exclusive to gasoline"; "there's potential for it to be in the ground";
    and it could come from paint or coal ashes (coal was used at the site).
    Nonetheless, the court concluded that Gulf, more likely than not, "owns
    the existing thousand UST that is next to Greenwich Street . . . [and] it would
    have contained gasoline . . . ." The court acknowledged there remained some
    uncertainty. But, it concluded, "I've got readings that demonstrate probable
    contamination of gasoline on the site," and, "we've got readings that are
    attributable to gasoline that raised the concern that it is from, on the differential
    diagnosis scale, from, the most likely source, the tank that was storing it." "I'm
    satisfied . . . that I can find that there's [a] reasonable probability on the proofs
    13
    Only Hopkins associated TIC levels with gasoline. However, by definition,
    TICs would appear to exclude a pollutant like gasoline, which can be detected
    by chemical analysis. Regulations define "TIC" to mean "a non-targeted
    compound detected in a sample . . . which has been tentatively identified using
    a mass spectral library search." N.J.A.C. 7:26E-1.8. A "non-targeted
    compound" is "a compound detected in a sample using a specific analytical
    method that is not a targeted compound . . . ." Ibid. By contrast, a "targeted
    compound" is "a hazardous substance, hazardous waste, or pollutant for which
    a specific analytical method is designed and/or used to detect that potential
    contaminant both qualitatively and quantitatively." Ibid.
    A-3144-17
    20
    that Gulf is a responsible party for the gasoline contamination" and can order
    them to "conduct further studies to further develop the extent of th[e]
    contamination, but also to further develop whether, in fact, that is or [is] not
    their tank." The court held that Gulf is "deemed the responsible party . . . to the
    extent that now they have to conduct further remedial investigation to further
    develop the record as to what's in that tank" and "until such time as they're able
    to demonstrate that [the] UST is not a gasoline storage facility, if that occurs,
    then their responsibility would end."
    As the trial judge retired shortly after rendering his decision, a different
    judge considered and denied Chevron's motion for judgment notwithstanding
    the verdict or, alternatively, a new trial. Chevron argued that the trial court erred
    in relying on Hopkins's opinion, because it had not qualified him to identify the
    contaminant at the scene, and reserved on whether Hopkins was qualified to
    opine about causation, but never rendered a final decision. Chevron also argued
    that Hopkins offered a net opinion about the contents of the Greenwich Street
    UST, because he never examined it.
    The motion court disagreed. The motion court held that Hopkins properly
    relied on the laboratories' results, and, "as an LSRP, [was] qualified to testify as
    to both his charting the laboratory results and the NJDEP standards." Although
    A-3144-17
    21
    the motion court reiterated that Hopkins "is not qualified to analyze samples," it
    found that Hopkins, "[a]s an LSRP . . . with . . . experience investigating sites
    with petroleum hydrocarbons" was qualified to testify that BTEX was a
    "signature of gasoline." The motion court also rejected Chevron's argument that
    Hopkins offered a net opinion about gasoline contamination. The motion court
    reasoned that Hopkins "relied on the analytic results that he received" from the
    laboratories, "[h]e did horizontal and cross-sectional mapping," and "he created
    visual summaries of his investigation." The motion court held that Hopkins's
    opinion was "based on his investigation, including review of the history of the
    site, the contracts between Gulf and [the store], his field screenings, and the
    laboratory results."
    The motion court also upheld the trial court's finding of gasoline
    contamination, noting it was "based on the historic use of the area," the
    "contracts for the USTs" between Gulf and the store, "the gasoline delivery
    records, and the groundwater analytical results summarized on" a trial court
    exhibit. The motion court noted that the exhibit listed levels of benzene, xylene,
    total TIC Volatile, and alkanes. The motion court asserted that "[a]ll of the
    experts agreed that BTEX . . . are considered to be a signature of gasoline."
    A-3144-17
    22
    The motion court also found the court reasonably found Chevron, as the
    successor to Gulf, owned the tank, and it was thus appropriate to order it to
    participate in further investigation of the site with plaintiff.
    Dorrell's appeal, and Chevron's cross-appeal followed. We consider them
    in turn.
    III.
    Dorrell contends the court imposed on her a higher burden of proof than
    the Spill Act and case law requires. Rather than ascertain if there was a nexus
    between defendants and the contamination, she asserts the court required her to
    prove defendants were at fault for the damage. Dorrell's appeal turns entirely
    on interpreting the Court's language in New Jersey Department of
    Environmental Protection v. Dimant, 
    212 N.J. 153
     (2012).
    In Dimant, the New Jersey Department of Environmental Protection
    (DEP) filed an enforcement action against a dry cleaner and others under the
    Spill Act. By the time of trial, the dry cleaner was the only direct defendant that
    remained.    In a bench trial, the court found "DEP failed to prove by a
    preponderance of the evidence that any discharge by [the dry cleaner] caused
    the groundwater contamination in issue." 
    Id. at 159
    . This failure thus precluded
    A-3144-17
    23
    DEP from compelling contribution from defendant for investigation and cleanup
    costs. 
    Ibid.
    The Supreme Court affirmed the trial court's ruling, but slightly modified
    and clarified the standard a plaintiff must satisfy in a Spill Act claim for
    contribution. The Court held that in order to hold a defendant responsible, "[a]
    reasonable nexus or connection must be demonstrated by a preponderance of the
    evidence." Dimant, 212 N.J. at 182. "[A] plaintiff need not 'trace the cause of
    the response costs' to each defendant in a multi-defendant case involving a
    contaminated site . . ." Ibid. (quoting N.J. Tpk. Auth. v. PPG Indus., Inc., 
    197 F.3d 96
    , 105 n.9 (3d Cir. 1999)). However, a plaintiff must do more than
    "simply prove that a defendant produced a hazardous substance and that the
    substance was found at the contaminated site and 'ask the trier of fact to supply
    the link.'" 
    Ibid.
     (quoting N.J. Tpk. Auth., 
    197 F.3d at
    105 n.9). The Court
    reaffirmed this view in Magic Petroleum Corp. v. Exxon Mobil Corp., 
    218 N.J. 390
    , 408 (2014), where it noted Dimant found "that to recover costs from [a]
    responsible party, [a plaintiff] must show [a] reasonable nexus between
    discharge, discharger and contamination at the damaged site."
    N.J.S.A. 58:10-23.11g(c)(1) provides that
    any person who has discharged a hazardous substance,
    or is in any way responsible for any hazardous
    A-3144-17
    24
    substance, shall be strictly liable, jointly and severally,
    without regard to fault, for all cleanup and removal
    costs no matter by whom incurred. Such person shall
    also be strictly liable, jointly and severally, without
    regard to fault, for all cleanup and removal costs
    incurred by the department or a local unit . . . .
    The operative language in plaintiff's appeal thus concerns "any person who . . .
    is in any way responsible for any hazardous substance . . . ." N.J.S.A. 58:10-
    23.11g(c)(1).      We have previously recognized the phrase "in any way
    responsible" is to be "broadly construed to encompass either ownership or
    control over the property at the time of the damaging discharge, or control over
    the hazardous substance that caused the contamination." N.J. Sch. Dev. Auth.
    v. Marcantuone, 
    428 N.J. Super. 546
    , 559 (App. Div. 2012) (citing Dimant, 212
    N.J. at 177-78).
    The trial court did not impose a higher burden of proof on plaintiff than
    Dimant demands. Rather, the court held there was an insufficient connection or
    nexus between defendants, and a discharge and contamination at the site. The
    court cited Dimant as not requiring negligence, or fault, but instead that a
    plaintiff must "demonstrate that there's a connection, a link, a nexus, between
    the discharge, the ultimate injury that it's caused." The court stated that the
    nexus could arise from "ownership"; actions "causing the leak, whether that's
    A-3144-17
    25
    negligence or not"; or some other "conduct, . . . [or] act that provides . . . the
    link" required.
    Applying the proper analytical framework, the court committed no error
    in finding Woodruff not liable for the fuel oil leak in plaintiff's basement.
    Dorrell effectively asks this court to find that mere delivery of oil, that is at some
    later point in time discharged from a tank, is sufficient to establish liability. We
    decline to do so where Woodruff did not own the tank, and where the record
    fails to establish a contractual responsibility to maintain or inspect the tank.
    We also note that plaintiff failed to establish the state of the tank in the
    basement that leaked the fuel oil. In Dimant, the Court cited favorably to
    Atlantic City Mun. Utils. Auth. v. Hunt, 
    210 N.J. Super. 76
    , 96 (App. Div. 1986),
    for the proposition that "placement of waste into non-leaking containers does
    not constitute 'a discharge.'" 212 N.J. at 161-62. Although the parties agree the
    AST in the basement leaked fuel oil, the trial judge questioned why no
    investigation was made of the tank to determine the source of the leak. Instead,
    the tank was replaced without investigation. In order to hold Woodruff liable
    for delivering fuel, plaintiff was thus obliged to establish when and why the tank
    leaked oil. If the tank had a small leak leading to oil leaking over time, Woodruff
    may have been on notice there was an issue if it was delivering more oil than
    A-3144-17
    26
    the tank's capacity in order to fill it up. Or, the tank may have had a burst seam
    leading to the leak occurring over the course of a few hours. Failure to establish
    why the leak occurred doomed plaintiff's claim.
    IV.
    We turn next to Chevron's cross-appeal of the trial court's order that it
    perform a remedial investigation on the site. Chevron challenges the court's
    finding that gasoline from the Greenwich Street 1000-gallon UST contaminated
    the site. Chevron contends the court erred in admitting Hopkins's o pinion.
    Chevron argues Hopkins was not qualified to determine that gasoline
    contaminated the site, or that Gulf caused it; and his opinion was, in any event,
    a net opinion. Chevron also asserts that it does not own the 1000-gallon tank.
    Finally, it argues that if it is required to undertake a remedial investigation,
    Woodruff and Dorrell should be required to share in investigation costs as well.
    As a threshold matter, we briefly address Chevron's argument that it does
    not own the Greenwich Street 1000-gallon UST. Even assuming Gulf installed
    and loaned the tank to the prior store owner, Chevron relies on Sgro v. Getty
    Petroleum Corp., 
    854 F. Supp. 1164
     (D.N.J. 1994) for the proposition that it was
    an abandoned fixture that became part of the realty. Chevron contends that
    A-3144-17
    27
    absent proof the alleged gasoline discharge occurred while it owned the tank,
    there would be an insufficient nexus between it and the discharge under Dimant.
    We are unpersuaded. Chevron misplaces reliance on a rule of law that
    vindicates the rights of a subsequent property owner or tenant to a presumably
    valuable fixture that a prior owner abandoned, where the property owner has
    notice of the fixture and assumes it is part of the property. As one treatise
    explains, "[T]he only policy justification for forfeiture [is] the protection of
    subsequent parties who have taken rightful possession of the property and
    should be free from interruption by a tenant who returns to remove trade fixtures
    at a later date." 8 Michael Allan Wolf, Powell on Real Property § 57.06[b]
    (2021).
    By contrast, this case involves saddling a subsequent property owner with
    a fixture that is a burden to the land, about which the subsequent owner had no
    notice. A tenant who abandons chattels on leased property is liable under the
    common law for the costs of removal, and "any other damages caused by the
    abandonment." Restatement (Second) of Property: Landlord & Tenant, § 12.3,
    cmt. l (Am. Law. Inst. 1977).
    However, we need not decide the scope of Dorrell's rights under the
    common law. A party who abandons a container used for storing potential
    A-3144-17
    28
    pollutants — whether it is an old drum of oil abandoned on the side of the road
    or an underground tank left in place — remains a person "in any way
    responsible" for discharges from the property it abandoned. N.J.S.A. 58:10-
    23.11g(c)(1).
    We are also unpersuaded that equity demands that Woodruff and Dorrell
    share in the remedial investigation, if one occurs. The trial court found Chevron
    liable for a remedial investigation because it found it more likely than not that
    gasoline was discharged into the ground from the tank that Gulf and Chevron
    owned. We recognize that a court may, in exercising its equitable authority,
    require that multiple potentially responsible parties bear the cost of an
    investigation where the source of contamination is unclear. Matejek v. Watson,
    
    449 N.J. Super. 179
    , 181 (App. Div. 2017). However, there was no evidence
    that Woodruff was responsible for a gasoline discharge, even though it delivered
    gasoline to the site from 1959 to the early 1960s. Also, Dorrell's alleged failure
    to discover the tank when she bought the property in 1984 is not a compelling
    basis to require her to defray Chevron's cost of investigating a discharge from
    Gulf and Chevron's tank.
    We turn to the more significant issue on the cross-appeal: the admissibility
    of Hopkins's expert opinion. Because Dorrell offered Hopkins's expert opinion,
    A-3144-17
    29
    she was obliged to establish its admissibility. See State v. Hyman, 
    451 N.J. Super. 429
    , 441 (App. Div. 2017) (stating "the proponent of opinion evidence
    bears the burden to establish its admissibility"). N.J.R.E. 702 and 703 frame the
    analysis for admitting expert testimony. Townsend v. Pierre, 
    221 N.J. 36
    , 53
    (2015).
    N.J.R.E. 702 states that "[i]f scientific, technical, or other specialized
    knowledge will assist the trier of fact to understand the evidence or to determine
    a fact in issue, a witness qualified as an expert by knowledge, skill, experience,
    training or education may testify thereto in the form of an opinion or otherwise."
    In other words, to satisfy N.J.R.E. 702, expert testimony must satisfy three
    requirements: "(1) the intended testimony must concern a subject matter that is
    beyond the ken of the average juror; (2) the field testified to must be at a state
    of the art such that an expert's testimony could be sufficiently reliable; and (3)
    the witness must have sufficient expertise to offer the intended testimony." State
    v. Kelly, 
    97 N.J. 178
    , 208 (1984); see also Townsend, 221 N.J. at 53.
    Regarding the third factor, "an expert 'must be "suitably qualified and
    possessed of sufficient specialized knowledge to be able to express [an expert
    opinion] and to explain the basis of that opinion."'" Agha v. Feiner, 
    198 N.J. 50
    , 62 (2009) (alteration in original) (quoting State v. Moore, 
    122 N.J. 420
    , 458-
    A-3144-17
    30
    59 (1991) (further citation omitted)). Once qualified, an expert witness can only
    offer opinion testimony within the bounds allowed by the trial judge . See State
    v. Locascio, 
    425 N.J. Super. 474
    , 490-91 (App. Div. 2012) (finding the trial
    court erred in allowing a witness qualified to testify as a pathologist to also
    testify as an expert in accident reconstruction).
    N.J.R.E. 703 addresses the foundation of the expert's opinion. It must "be
    grounded in facts or data derived from (1) the expert's personal observations, or
    (2) evidence admitted at the trial, or (3) data relied upon by the expert which is
    not necessarily admissible in evidence but which is the type of data normally
    relied upon by experts." Townsend, 221 N.J. at 53 (internal quotation marks
    and further citations omitted). As a corollary of N.J.R.E. 703, the "net opinion
    rule" "mandates that experts 'be able to identify the factual bases for their
    conclusions, explain their methodology, and demonstrate that both the factual
    bases and the methodology are reliable.'"       Id. at 55 (quoting Landrigan v.
    Celotex Corp., 
    127 N.J. 404
    , 417 (1992)).
    To meet the reliability requirement in the case of scientific expert opinion,
    the proponent must "demonstrate that the expert's opinion or theory was
    generally accepted within the scientific community." Kemp ex rel. Wright v.
    A-3144-17
    31
    State, 
    174 N.J. 412
    , 424 (2002).14 A court must "distinguish scientifically sound
    reasoning from that of the self-validating expert, who uses scientific
    terminology to present unsubstantiated personal beliefs." Landrigan, 
    127 N.J. at 414
    .
    We generally review decisions to admit expert opinion testimony, like
    other evidentiary decisions, under an abuse of discretion standard. Townsend,
    221 N.J. at 53. That discretion extends to the decision whether the expert
    possesses the necessary qualifications. Ryan v. Renny, 
    203 N.J. 37
    , 50 (2010).
    "[A]n abuse of discretion 'arises when a decision is "made without a rational
    explanation, inexplicability departed from established policies, or rested on an
    14
    Our court applied a more relaxed standard focused on the underlying
    methodology in cases involving novel theories of causation in toxic tort cases.
    Kemp, 
    174 N.J. at 424-25
     (stating that "a theory of causation that had not yet
    reached general acceptance in the scientific community 'may be found to be
    sufficiently reliable if it is based on a sound, adequately-founded scientific
    methodology involving data and information of the type reasonably relied on by
    experts in the scientific field'") (quoting Rubanick v. Witco Chem. Corp., 
    125 N.J. 421
    , 449 (1991)). After trial in this case, the Court in In re Accutane
    Litigation, 
    234 N.J. 340
     (2018), adopted, for scientific expert testimony in civil
    cases, aspects of the test in Daubert v. Merrell Dow Pharmaceuticals, Inc., 
    509 U.S. 579
     (1993). The Court's approach "requires the proponent to demonstrate
    that the expert applies his or her scientifically recognized methodology in the
    way that others in the field practice the methodology." Accutane, 234 N.J. at
    399-400. The trial court should exclude expert testimony as unreliable " [w]hen
    a proponent does not demonstrate the soundness of a methodology, both in terms
    of its approach to reasoning and to its use of data, from the perspective of others
    within the relevant scientific community." Id. at 400.
    A-3144-17
    32
    impermissible basis."'" State v. R.Y., 
    242 N.J. 48
    , 65 (2020) (quoting Flagg v.
    Essex Cty. Prosecutor, 
    171 N.J. 561
    , 571 (2002) (further citation omitted)). In
    particular, an appellate court owes no deference to an evidentiary ruling if the
    trial court failed to apply the correct standard for admissibility. State v. Darby,
    
    174 N.J. 509
    , 518 (2002) (reviewing de novo admissibility of other crimes and
    wrongs evidence where trial court failed to apply standard for admissibility);
    Konop v. Rosen, 
    425 N.J. Super. 391
    , 401 (App. Div. 2012) (stating an appellate
    court reviews de novo a trial court evidentiary ruling where the court failed to
    apply the correct test). We also will find an abuse of discretion in the case of a
    clear error of judgment, or a manifest injustice. Rodriguez v. Wal-Mart Stores,
    Inc., 
    237 N.J. 36
    , 57 (2019).
    However, not all evidentiary rulings are subject to the abuse-of-discretion
    standard of review. "Whether expert testimony is sufficiently reliable to be
    admissible under N.J.R.E. 702 is a legal question" that an appellate court
    reviews de novo. State v. J.L.G., 
    234 N.J. 265
    , 301 (2018); see also State v.
    Harvey, 
    151 N.J. 117
    , 167-68 (1997) (stating that an appellate court "reviewing
    a decision on the admission of scientific evidence . . . should scrutinize the
    record and independently review the relevant authorities, including judicial
    opinions and scientific literature").
    A-3144-17
    33
    We apply these principles first to the issue of Hopkins's qualification to
    opine that the contaminant found was gasoline. The motion court recognized
    that Hopkins was not qualified to "analyze" samples. But, the trial court's initial
    ruling went further. The trial court held that Hopkins was not qualified to
    "identify" the hydrocarbons, and instead relied on other experts to do so. The
    court's decision was justified.
    However, Dorrell's counsel later elicited Hopkins's opinion, identifying
    the contaminant as gasoline. Chevron objected that the opinion was outside the
    scope of his qualifications the court previously determined. The court allowed
    the testimony subject to what amounted to its reconsideration of its previous
    decision. But, the court never returned to Hopkins's qualifications.
    As we noted, essential to the admissibility of an expert's opinion under
    N.J.R.E. 702 is proof that the expert has the qualifications to offer it. We are
    constrained to conclude that the trial court abused its discretion by admitting
    Hopkins's opinion that the contaminant in the soil and water at the site was
    gasoline, absent a finding he was qualified to give it.
    We recognize that Hopkins grounded his opinion in part on what we view
    as circumstantial evidence. He found samples with elevated readings of various
    contaminants near the 1000-gallon Greenwich Street tank. He considered the
    A-3144-17
    34
    historic use of the site for gasoline storage and sales. However, an essential
    element of his opinion that the contaminant was gasoline rested on Hopkins's
    analysis of various chemicals, including lead and BTEX, which he opined were
    "signatures" or "markers" of gasoline. Notably, Hopkins did not testify during
    his voir dire that he had the training or experience to distinguish between various
    petroleum products and to identify gasoline among them, based on the kind of
    data he utilized. During trial, he admitted that various other chemicals are
    closely associated with leaded gasoline; he obtained tests of those for samples
    taken from other locations on the property; but he did not obtain those tests for
    the samples he asserted contained gasoline. He also admitted that specific forms
    of lead were associated with gasoline, but he relied on total lead readings as the
    foundation of his opinion.
    Nor are we convinced that, as an LSRP, Hopkins necessarily was qualified
    to identify gasoline. The motion court held that "[a]s an LSRP and with his
    experience investigating sites with petroleum hydrocarbons," Hopkins was
    qualified to testify that BTEX was a "signature of gasoline" and his "charting
    the laboratory results." 15
    15
    The motion court's conclusion that "[a]ll of the experts agreed that BTEX . . .
    are considered to be a signature of gasoline" is unsupported by the record, if the
    A-3144-17
    35
    We are unconvinced. A discharger or a person in any way responsible for
    a discharge is required to hire an LSRP to perform remediation.        N.J.S.A.
    58:10B-1.3. Remediation may encompass a remedial investigation that includes
    identifying the nature of contamination.        N.J.S.A. 58:10C-2 (defining
    "remediation" and "remedial investigation"). However, the statute recognizes
    that an LSRP may be required to rely on other professionals to perform tasks he
    or she is not qualified to perform. "A licensed site remediation professional
    shall not provide professional services outside the areas of professional
    competency, unless the licensed site remediation professional has relied upon
    the technical assistance of another professional whom the licensed site
    remediation professional has reasonably determined to be qualified by
    education, training, and experience."        N.J.S.A. 58:10C-16(c).       Thus,
    qualification as an LSRP does not necessarily imply qualification to identify
    specific petroleum contaminants based on the data Hopkins utilized.
    The trial court also never decided that Hopkins was qualified to offer an
    opinion about causation. At the beginning of trial, the court stated it was "not
    court meant by "signature" that BTEX was uniquely found in gasoline. Lifrieri
    testified that BTEX is found in fuel oil, as well. Furthermore, as noted , the
    laboratories never reported the presence of gasoline. They reported the presence
    of various other chemicals. The issue is whether Hopkins was qualified to infer
    that gasoline was present based on that chemical array.
    A-3144-17
    36
    prepared . . . without more foundation, without more specifics, to be able to say
    [Hopkins was] qualified . . . to give what I'll call proximate cause opinions."
    The court did not foreclose Dorrell from making such a showing. But, the court
    did not expressly revisit the issue.
    Even assuming Hopkins was a qualified witness, the record does not
    disclose that the facts and methods he used to identify gasoline, and attribute it
    to Gulf, were reliable. As noted, the "net opinion rule" required Hopkins to
    "demonstrate that both the factual bases and the methodology [of his opinion]
    were reliable." Townsend, 221 N.J. at 53 (quoting Landrigan, 
    127 N.J. at 417
    ).
    The record contains no such demonstration. Hopkins certainly described the
    basis for his opinion, including the presence of certain chemicals, the proximity
    of the 1000-gallon UST, and the historic use of the site. However, Hopkins
    referred to no scientific sources or evidence to demonstrate that his methodology
    was reliable; or that it was generally accepted within the field of environmental
    assessment and investigation.
    Rather, the evidence at trial disclosed other reliable methods of
    identifying gasoline and determining its source, which Hopkins chose not to use.
    Hopkins conceded that to determine whether leaded gasoline was present, one
    would test for several chemicals; yet, he did not order those tests for the samples
    A-3144-17
    37
    taken near the 1000-gallon UST.        The other experts identified particular
    petroleum products through the use of chromatograms and other sophisticated
    technologies. Those methods were applied to samples from the basement and
    the test well north of the building; but, not applied to samples near the 1000-
    gallon UST, or where gasoline was sold. 16 Hopkins also never inspected the
    1000-gallon UST, to determine if it was corroded or cracked; nor did he try to
    sample and test the tank's contents.
    We conclude it is appropriate to remand for an N.J.R.E. 104 hearing to
    determine the admissibility of Hopkins's opinions, both based on his
    qualifications, and the reliability of his methodology. We recognize that Dorrell
    bore the burden to establish the admissibility of Hopkins's opinion, but the issue
    was joined and the court never returned to the issue so as to put Dorrell to the
    test. Furthermore, during trial, Chevron did not object to Hopkins's opinion on
    the ground it was a net opinion. 17 The argument was raised in a post-trial
    16
    Dorrell excuses Hopkins's decision not to utilize those tests on the samples
    taken near the 1000-gallon UST, because the samples were dissolved in the
    groundwater, as opposed to "product" that floated atop the groundwater.
    However, Hopkins presented no evidence of the reliability of that methodology.
    17
    We recognize that Chevron's counsel made a passing reference to "net
    opinion" in oral argument on the motion for involuntary dismissal after Dorrell
    rested. However, Chevron did not expressly challenge the reliability of
    Hopkins's methodology.
    A-3144-17
    38
    motion.    Neither party requested an N.J.R.E. 104 hearing to ascertain the
    reliability of Hopkins's methodology. "[T]he sounder practice is to afford the
    proponent of the expert's opinion an opportunity to prove its admissib ility at a
    Rule 104 hearing." Kemp, 174 N.J. at 432-33.
    At the hearing, Hopkins shall have the opportunity to demonstrate his
    qualifications and the reliability of the methodology he used. Chevron shall be
    entitled to offer its own expert in response to these questions. The trial court
    shall assure the hearing is limited to the issues of Hopkins's qualifications at the
    time he testified at trial and the reliability of the methodology, as it existed at
    the time of trial, supporting the opinions concerning the identification of
    gasoline and its source on the property that he offered at trial, and does not
    transform into a re-trial. Whether pre-hearing exchanges are warranted is left
    to the trial court's discretion.
    If the court on remand determines that Hopkins was not qualified to
    identify the contaminant as gasoline or opine about causation, or that his
    methodology was not reliable, then the judgment of the trial court with respect
    to Chevron shall be vacated. However, if the court determines that Hopkins was
    qualified to identify gasoline as a contaminant, and the factual bases and
    methodology he used were reliable, then the order shall be enforced.
    A-3144-17
    39
    Affirmed on the appeal. Remanded on the cross-appeal. We do not retain
    jurisdiction.
    A-3144-17
    40