This appeal presents the question of whether federal law preempts any or all of plaintiffs’/appellants’ numerous causes of action for damages against a group of cellular-telephone manufacturers, distributors, promoters, sellers, service providers, industry associations, and standards-setting entities. The Superior Court ruled that all of the claims are barred on the basis of both express and implied federal preemption. For the reasons that follow, although we find no express preemption, we conclude that federal law does impliedly preempt plaintiffs’ claims insofar as they seek to hold defendants liable for bodily injuries from cell phones that met the radio frequency (“RF”) radiation standard adopted by the Federal Communications Commission (the “FCC”). At the same time, we conclude that insofar as plaintiffs’ claims are premised on allegations that they were injured through use of cell phones that did not meet the FCC standard, the claims are not federally preempted. We also conclude that plaintiffs’ claims alleging violations of the Dis-triet of Columbia Consumer Protection Procedures Act (“CPPA”), D.C.Code § 28-3904 (2001), may survive the preemption challenge. We therefore affirm in part and reverse in part the judgment of the Superior Court dismissing the complaints, and we remand for further proceedings consistent with this opinion.
I.
Through six separate complaints filed in November 2001 or February 2002 (“the Complaints”), plaintiffs/appellants (hereinafter, “plaintiffs”)
1
sued defendants/appellees (collectively, “Motorola et al.,” “defendants,” or the “cell-phone companies”), alleging that plaintiffs suffered illness and injury (including brain cancer or tumors), or loss of consortium, as a result of using hand-held cellular telephones produced, sold, or promoted by defendants (hereinafter “cell phones,” “mobile phones,” or “hand-held phones”). The Complaints assert virtually identical causes of action for (1) intentional fraud and misrepresentation; (2) negligent misrepresentation; (3) strict product liability; (4) failure to warn and defective manufacture and design; (5) negligence; (6) gross negligence; (7) breach of express warranty; (8) breach of implied warranty; (9) conspiracy; (10) violations of the CPPA
2
; (11) civil battery; and, except for the Scho-field complaint, (12) loss of consortium. Motorola et al. thereafter attempted to remove the suits from the District of Columbia Superior Court, where they were
*769
filed, to the United States District Court for the District of Maryland.
See In re Wireless Tel. Radio Frequency Emissions Prods. Liab. Litig.,
Upon remand to the Superior Court, defendants filed a motion to dismiss, arguing that, because plaintiffs’ claims are preempted by federal law, plaintiffs had failed to state a claim upon which relief could be granted. The FCC participated as
amicus curiae,
likewise arguing that plaintiffs’ claims must fail on preemption grounds. The Superior Court consolidated the six suits for purposes of oral argument. In a comprehensive August 24, 2007, memorandum opinion and order (“Order”), the motions judge, the Honorable Cheryl Long, dismissed the Complaints with prejudice, ruling that the claims set forth in them are precluded under the doctrines of express preemption, conflict preemption, and field preemption. Our review of the dismissals is
de novo. See Portuguese Am. Leadership Council of the U.S., Inc. v. Investors’ Alert, Inc.,
II.
We begin with a close look at the Complaints that commenced this litigation. Plaintiffs allege that Motorola et al. have long been aware of numerous studies revealing that the radio frequency emissions (“RF emissions” or “RF radiation”) from cell phones have both thermal and non-thermal effects that are severely harmful to human health. For example, according to plaintiffs, the studies leave room for no dispute that the thermal effects of RF radiation can cause tissue destruction, a precursor to cancer. Deliberately suppressing such studies, plaintiffs allege, defendants “set about to co-op [sic] the federal agencies which had the jurisdiction to force the industry to prove the safety of cell phones.” According to plaintiffs, the cell-phone companies ultimately succeeded in “manipulatfing] the research” of the American National Standards Institutes (“ANSI”) and in causing cell phones initially to be “excluded from any testing, compliance, or monitoring by any safety standard, government agency, or regulatory body.” Eventually (in 1992), ANSI did recommend specific absorption rate [SAR] 4 limits applicable to cell phones, and, effective August 1, 1996, the FCC adopted a standard based in part on the *770 1992 ANSI recommendations. 5 But, plaintiffs complain, the FCC has “allowed cell phone manufacturers to self certify their cell phones as within the SAR limits” even though “SAR results can be easily manipulated.” As a result, the Complaints continue, the SAR values that defendants report to the FCC during self-certification “are below actual values” and “actual values exceed the SAR limits established by the FCC.” 6 The Complaints further allege that federally adopted SAR limits are inadequate in any case because they do not take into account “ ‘hot spots’ 7 created by the convergence of airwaves.”
Plaintiffs further charge that “[djefen-dants were aware of numerous solutions that could virtually eliminate the health hazards of radiation from cell phones such as shielding, antenna phasing, use of low reluctance material pattern, shrouds, canting etc.” The Complaints assert that, unwilling to sacrifice profits, defendants neither adopted these safety measures nor warned cell-phone users of potential risks or methods that could be used to minimize their exposure to radiation and to avoid injury. Instead, the Complaints allege, defendants led the public in general and plaintiffs in particular to believe that cell phones “do not pose any risk of harm to the user whatsoever” and that “there is absolutely no risk of harm associated with the use of cell phones.”
Judge Long found that the gravamen of plaintiffs’ Complaints is that the cell phones that defendants manufactured or promoted were unsafe because they emitted a dangerous level of RF radiation, notwithstanding any FCC approval of the phones. Through their strict-product-liability, breach-of-implied-warranty, negligence, and failure-to-warn/defective-manufacture-and-design counts, plaintiffs seek damages on the grounds that their cell phones were “defective” and “unreasonably dangerous” when they entered the market and that the phones “emit harmful radiation fields without adequate safeguards to protect the user,” create a “risk of biological damage” and other “health risks” resulting from exposure to RF emissions, and do not include available exposure-reducing safeguards {e.g., headsets and speaker-phone adaptors). Plaintiffs’ intentional-fraud-and-misrepresentation, negligent-misrepresentation, and breach- *771 of-express-warranty claims seek damages on the grounds that defendants misrepresented that “cell phones are safe to use,” that they failed to disclose that “there was a great risk of harm associated with the use of cell phones,” and that cell phones “are not safe and have high potential for causing serious biological and health effects .... ” Through their civil-battery counts, plaintiffs seek damages for defendants’ having “inflicted harmful or offensive contact” on plaintiffs by exposing them to “radiation fields which ... could cause ... significant health risks and effects.” 8
Finally, Count Nine of each Complaint raises CPPA claims. Plaintiffs essentially have quoted from each of the paragraphs of D.C.Code § 28-3904, going so far as to include claims that appear to be unsupported by any of the other factual allegations of the Complaints (such as claims that defendants “falsely state[d] the reasons for offering and/or supplying goods or services at sale or discount prices” in violation of section 28—3904(l), and misled plaintiffs “into believing deceptive representations or designations of geographic origin in connection with goods or services,” in violation of section 28-3904(t)). But, more apropos of other allegations of the Complaints that Count Nine incorporates by reference, plaintiffs also allege that defendants falsely represented that their goods have “approval, certification [or] characteristics” that they did not have, in violation of sections 28-3904(a) and (b), and that defendants made false and misleading statements or omissions that had the “capacity, tendency or effect of deceiving or misleading consumers,” in violation of D.C.Code §§ 28-3904(e) and (f).
With this reading of the Complaints in mind, we turn to the preemption issues.
III.
The Supremacy Clause, Article VI of the United States Constitution, declares that “the Laws of the United States ... shall be the supreme Law of the Land; ... any Thing in the Constitution or Laws of any State to the Contrary notwithstanding.” U.S. Const. art. VI., cl. 2. Courts have identified three ways in which, pursuant to the Supremacy Clause, federal law may preempt state law, either expressly or impliedly.
See In re Couse,
IV.
Two provisions of the federal Telecommunications Act of 1996 (the “Telecommunications Act”), Pub.L. No. 104-104, 110 Stat. 56 (1996), were the basis for the Superior Court’s finding that the Complaints were barred on the basis of express preemption: 47 U.S.C. §§ 332(c)(7)(B)(iv) and 332(c)(3)(A).
A. Section 332(c) (7) (B)(iv)
In relevant part, section 332(c)(7) provides:
(7) Preservation of local zoning authority-
(A) General authority. Except as provided in this paragraph, nothing in this Act shall limit or affect the authority of a State or local government or instrumentality thereof over decisions regarding the placement, construction, and modification of personal wireless service facilities.
(B) Limitations.
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(iv) No State or local government or instrumentality thereof may regulate the placement, construction, and modification of personal wireless services facilities on the basis of the environmental effects of radio frequency emissions to the extent that such facilities comply until the [Federal Communications] Commission’s regulations concerning such emissions.
47 U.S.C. § 332(e)(7)(B)(iv) (italics added). Interpreting the term “personal wireless service facilities” to include cellular telephones, Judge Long reasoned that, by prohibiting state regulation of personal wireless service facilities on the basis of RF emissions, section 332(c)(7)(B)(iv) pre- *773 eludes plaintiffs’ state-law claims about cell phone RF radiation.
The statutory language provides some basis for Judge Long’s interpretation of the term “personal wireless service facilities.” The term is defined in section 332 as “facilities for the provision of personal wireless services,” and “personal wireless services” in turn is defined to include “commercial mobile services.” 47 U.S.C. § 332(c)(7)(C)(i)(ii). The FCC has explained that cellular telephones are a critical component of the personal-wireless-service network; for transmission to occur, base stations must send “low power RF signals” back and forth to transmitters that are “embedded in wireless telephones.” In that sense, a cellular telephone can reasonably be said to be a “facility for the provision of wireless services” (inasmuch as the services exist only because individuals have cell phones). 11 See Webster’s Third New International Dictionary 812 (3d ed.2002) (defining “facility” as “something that promotes the ease of any action, operation, transaction, or course of conduct”). And, notably, plaintiffs asserted in their Complaints that “the cell phone is not limited to the actual cellular wireless hand held telephone itself,” but includes “base stations, antennas, land lines, and switching offices, all of which are necessary for the operation of a cell phone.... ” Not unreasonably, Judge Long ruled that “plaintiffs cannot be heard to deny that hand-held cellular phones are an integral part of the ‘provision of personal wireless services’ regulated by the federal government.”
Nevertheless, we think the foregoing interpretation does not adequately take into account the context and legislative history of the pertinent statutory language, which must inform our
de novo
review. As the excerpt from section 332(c)(7) quoted above shows, the section is entitled “Preservation of local zoning authority.” Relying on
Pinney v. Nokia,
The legislative history of section 332(e)(7)(B)(iv) also supports plaintiffs’ po *774 sition. For example, the Conference Committee Report to the Telecommunications Act explains that Congress’s intent was to “preserve[ ] the authority of State and local governments over zoning and land use matters except in the limited circumstances set forth in the conference agreement” and that “[t]he limitations on the roles and powers of the Commission [described in section 832(c)(7)(A) ] relate to local land me regulations ...S.Rep. No. 104-280 at 20708, 209 (1996) (Conf. Rep.) (emphasis added). Additionally, the relevant House Committee explained that it was including section 332(c)(7) in the bill it reported in order to address state and local policies related to “siting and zoning” and “planning and building.” H.R.Rep. No. 104-204, pt. 1, at 94 (1995).
Given the surrounding language and the legislative history of section 332(c)(7)(B)(iv), we conclude that “personal wireless services facilities” refers to components of the nationwide wireless network that are fixed structures, not to cell phones.
See Farina v. Nokia,
B. Section 332(c)(3)(A)
Section 332(c)(3)(A) provides that:
[N]o State or local government shall have any authority to regulate the entry of or the rates charged by any commercial mobile service or any private mobile service, except that this paragraph shall not prohibit a State from regulating the other terms and conditions of commercial mobile services.
47 U.S.C. § 332(c)(3)(A). The Superior Court found that this section precludes plaintiffs’ claims because “the use of potential jury verdicts based upon competing RF emissions standards would create a new hurdle for participating in the market.” In our view, the Superior Court’s conclusion cannot be reconciled with the second clause of section 332(c)(3)(A), which expressly permits states to restrict the “other terms and conditions of commercial mobile services” without regard to whether such terms and conditions may create hurdles or burdens attendant to participating in the market. We agree with the FCC’s reasoning, in a 2000 order, that section 332(c)(3)(A)’s preemption clause could not encompass
all
tort suits that increase the “cost of doing business” because, if it did, this would render meaningless the “terms and conditions” language appearing in the same section.
In re Wireless Consumers Alliance, Inc.,
15 F.C.C.R. 17021, ¶¶ 33, 34 (2000).
13
Other courts, too, have agreed with the FCC’s reading of section 332(c)(3)(A) and, accordingly, have precluded states’ direct efforts to prevent telecommunications companies from operating while upholding state regulation that merely imposes financial burdens on such companies. We agree with the
Farina
court that “Congress’s intent in enacting [section 332(c)(3)(A) ] was to prevent the states from obstructing the creation of nationwide cellular service coverage, and not the preemption of health and safety and police powers.”
Farina,
*775
For the foregoing reasons, we conclude that plaintiffs’ suits are not expressly preempted by 47 U.S.C. § 332(c).
y.
We next address the issue of conflict preemption. Judge Long agreed with
amicus
FCC that the gist of plaintiffs’ Complaints is that cell phones “that are sold in compliance with current FCC rules nevertheless may be deemed ‘unreasonably dangerous’ under state law, so that wireless carriers and equipment manufacturers potentially may be subject to civil liability on that basis.” Judge Long concluded that the Complaints are barred by the doctrine of conflict preemption because, if successful, they would stand as an “obstacle” to the accomplishment of federal objectives.
See Geier,
During the rulemaking process that the FCC opened in 1993 to consider adopting new guidelines for human exposure to RF radiation, the agency “considered carefully well over 150 sets of comments” and “consulted extensively with all of the relevant health and safety agencies,” ultimately adopting guidelines “based on the recommendations of these agencies.” 12 F.C.C.R. at 13506, ¶ 34. 14 Among other comments, the agency considered comments from telecommunications-industry organizations that the industry would “not be able to function under the [suggested] approach ... that the Commission assume the worst in the face of any uncertainty” about radiation hazards. 12 F.C.C.R. at 13504, ¶ 28 (internal quotation marks omitted). With respect to study findings about the purported “non-thermal effects” of RF radiation in particular, the FCC considered, inter alia, comments that “billions of dollars are being invested in telecommunications infrastructure, and it is no simple matter to modify a telecommunications system as a result of each new study,” id. at 1350405, ¶ 28, and that “the issue of non-thermal effects was explicitly addressed in the 1992 ANSI/IEEE standard, which concluded that no reliable scientific data exist to indicate such effects may be meaningfully related to human health.” Id. at 13505, ¶ 28 (internal quotation marks omitted).
Ultimately, the FCC adopted a SAR standard based on the 1992 ANSI/IEEE recommendations (which were more restrictive than the 1982 ANSI recommendations) and on NRCP criteria, deciding against imposition of an even more stringent standard. Under the regulations that the FCC adopted, cell phones must be authorized by the FCC before they can be marketed or sold in the United States, see 47 C.F.R. §§ 2.801 and 2.803 (2008), and, as part of the equipment-authorization process, an applicant must certify that the equipment will not “cause human exposure *776 to levels of radiofrequency radiation in excess of’ the limits specified in the agency’s regulations. 47 C.F.R. § 1.1307(b) (2008); 47 C.F.R. § 2.1098 (2008). The FCC emphasized in its rulemaking notice that the standards it adopted were “based on recommendations of expert organizations and federal agencies with responsibilities for health and safety[,]” since “[i]t would be impracticable for us to independently evaluate the significance of studies purporting to show biological effects, determine if such effects constitute a safety hazard, and then adopt stricter standards tha[n] those advocated by federal health and safety agencies.” 12 F.C.C.R. at 13505, ¶ 31. The agency stated that this was “especially true for such controversial issues as non-thermal effects....” Id.
Further — and most significant for our analysis here — the FCC explained its belief that the RF radiation limits it adopted “provide a proper balance between the need to protect the public and workers from exposure to excessive RF electromagnetic fields and the need to allow communications services to readily address growing marketplace demands.” Id. at 13497, ¶ 5. The agency stated that
requiring exposure to be kept as low as reasonably achievable in the face of scientific uncertainty would be inconsistent with its mandate to “balance between the need to protect the public and workers from exposure to potentially harmful RF electromagnetic fields and the requirement that industry be allowed to provide telecommunications services to the public in the most efficient and practical manner possible.” 15
Cellular Phone Taskforce,
Given the FCC’s contemporaneous explanations of the balance it sought to achieve by rejecting a more stringent safety standard, we conclude that state regulation that would alter the balance is federally preempted. In reaching this conclusion, we have given weight both to the FCC’s “unique understanding of the statutes [it] administer[s] and [its] attendant ability to
*777
make informed determinations about how state requirements may pose an obstacle to the accomplishment and execution of the full purposes and objectives of Congress,”
Wyeth v. Levine,
— U.S. —, —,
The discussion above leads us to conclude that, insofar as plaintiffs’ claims rest on allegations about the inadequacy of the FCC’s RF radiation standard or about the safety of their FCC-certified cell phones, the claims are preempted under the doctrine of conflict preemption.
18
Such claims
*778
conflict with the FCC determination that “wireless phones that do comply with [the FCC’s] RF standards are safe for use by the general public and may be sold in the United States.”
See Bennett v. T-Mobile USA, Inc.,
We conclude that there is conflict preemption even as to plaintiffs’ claims that seek damages on account of the non-thermal effects of cell-phone radiation.
20
*779
As to these effects, plaintiffs contend, the SAR standard “does not apply,” leaving room for state regulation.
21
In some respects, the FCC’s decision not to adopt a modified or separate standard specifically geared to the non-thermal effects of cellphone RF radiation was similar to the agency action discussed in
Sprietsma v. Mercury
Marine,
Like the Coast Guard in its adoption of the rules at issue in
Sprietsma,
the FCC did not “take the further step of deciding that, as a matter of policy, the States ... should not impose” regulation directed at protecting against the non-thermal effects of RF radiation.
Sprietsma,
537 U.S. at
*780
67,
[have] to ask a jury to accept [their] premise that the FCC’s SAR maximum is inadequate to ensure the safe use of cell phones.... Thus, [they] seek[ ] to impose legal duties that would conflict directly with federal regulatory mandates because the Defendants could be held liable even though they indisputably complied with the SAR maximum.
Farina,
Notwithstanding our conclusion that conflict preemption bars plaintiffs’ claims for damages based on their allegations of bodily injury from FCC-certified cell phones, our analysis thus far does not permit us to uphold entirely the Superior Court’s order dismissing plaintiffs’ suits. This is so because we read the Complaints as alleging, in part, that plaintiffs’ injuries were caused by cell phones that plaintiffs acquired prior to August 1, 1996 (when the FCC adopted its current regulation requiring SAR testing and certification for cell phones), and that (allegedly) did not comply with the current SAR standard. 25 Several statements in the Complaints and in plaintiffs’ trial-court pleadings support this reading of the Complaints. First, plaintiffs’ allegations are about cell phones “currently in widespread use” — i.e., in use at the time plaintiffs filed their Complaints in late 2001 or early 2002 — and most of the plaintiffs specify in their Complaints that they acquired their first cell phones prior to August 1, 1996. Plaintiff Murray alleges that he bought his first cell phone “[i]n or about 1993.” Plaintiffs Schofield, Richard Schwamb, David Keller, and Balassare Agro similarly state that they bought their first cell phones prior to 1996, and Schwamb states that he used his “first and only cellphone” “from March 7,1995 to the present” (presumably, February 26, 2002, the date when he filed his Complaint). 26 Further, the Complaints assert that “[i]n 1985, the FCC adopted the 1982 ANSI *782 standard but excluded cell phones ...” (emphasis added), and that early cell phones could not have met the 1982 ANSI standard (which is less restrictive than the 1992 ANSI/IEEE recommendation on which the FCC’s current RF radiation standard is based). In their briefs to the Superior Court, plaintiffs asserted that defendants “introduced cell phones into the market without any prior oversight from any governmental agency....” 27 Plaintiffs’ trial-court pleadings also assert that after enactment of the Telecommunications Act, the FCC “adopted guidelines for RF exposure from hand-held cell phones manufactured after the effective date of [the FCC’s] 1996 order” (underscoring in original) and that “the 1996 standards set by the FCC only applied to SAR testing of new cell phones....” 28 All of these statements appear to focus on the facts — which plaintiffs assert and neither the FCC nor defendants have disputed in their briefs — ■ that (1) prior to August 1, 1996, the federal government did not apply any RF exposure limit to cell phones; and (2) on and after August 1, 1996, cell phones manufactured prior to that date continued to be unregulated. This was also part of plaintiffs’ focus during arguments before Judge Long on the motion to dismiss. 29
Assuming that plaintiffs’ claims entail in part a claim that they were injured through use of cell phones manufactured before August 1, 1996, that did not meet the standard that the FCC adopted as of that date (or through the use of any other non-FCC-compliant cell phones), we discern no reason why the claims should have been dismissed on the ground of conflict preemption.
30
Such claims — claims to which we refer more generally hereafter as “claims about non-FCC-compliant cell phones” — do not appear to challenge or to conflict with the FCC’s RF standard for cell phones.
31
Cf. Cipollone,
The second reason why we must undertake further analysis is that the Complaints also assert claims under the CPPA. Although defendants characterize the CPPA claims as mere “derivative claims” that stand or fall with plaintiffs’ *783 other claims, we reject this sweeping characterization. The unlawful trade practices described in the CPPA, see D.C.Code § 28-3904, entitle an aggrieved person to sue for relief (under D.C.Code § 28-3905(k)(1)) “whether or not [plaintiffs were] ... damaged thereby.” D.C.Code § 28-3904. Under section 28-3905(k)(1)(A)(F), a successful CPPA plaintiff may recover statutory damages of $1,500 per violation (or, if greater, trebled actual damages) as well as punitive damages and other relief. Thus, in advancing CPPA claims, plaintiffs — who allege that they were “deceived” — do not necessarily seek to hold defendants liable solely for bodily injuries plaintiffs (allegedly) sustained from use of cell phones with allegedly dangerous RF radiation levels. Rather, defendants could be held liable for providing plaintiffs with false and misleading information about their cell phones, or for omitting to disclose material information about the phones, without plaintiffs having to prove that cell phones emit unreasonably dangerous levels of radiation.
Plaintiffs’ CPPA Counts incorporate by reference all of the other paragraphs of the Complaints, so we are left to guess which allegations plaintiffs rely on in particular as the premise for their claims that defendants made false or misleading statements or omitted material information in connection with plaintiffs’ cell phones. But we are satisfied that plaintiffs have pled at least several claims about false or misleading statements or omissions that, if proven, could be violations of the CPPA, and which do not necessarily depend for their success upon proof that cell phones are unreasonably dangerous. 32
For example, the Complaints allege that defendants withheld information that while “[t]he 1992 ANSI guidelines required cell phones to operate below certain SAR limits,” the cell phones that plaintiffs “had purchased had not been certified to be in compliance with the ANSI guidelines or the FCC mandated SAR limits.” Similarly, in Count Nine, plaintiffs claim that defendants falsely represented that their goods have “approval” or “certification” that they did not have and misled plaintiffs “into believing representations regarding conformance with applicable product safety standards and/or statutes with full knowledge that the good and/or serv[ic]e does not in fact conform ” (emphasis added). We see no reason why this claim should be preempted on the ground that it conflicts with the FCC regulatory standard (and, at oral argument, counsel for amici informed us that he was not author *784 ized to state a position on ■ the issue of whether claims that cell phones violated the FCC standard would be preempted).
Another example of an allegation in the Complaints that could support plaintiffs’ CPPA claims is plaintiffs’ assertion that defendants have falsely represented that “[rjesearch has shown that there is absolutely no risk of harm associated with the use of cell phones.” As based on this assertion, plaintiffs’ false representation CPPA claim is not preempted on the ground that it conflicts with a specific federal policy, because, while the FCC has determined that cell phones that comply with the SAR standard are not unreasonably dangerous, even the federal government has acknowledged that “[t]here is no proof ... that wireless phones are absolutely safe.” 33
Additionally, the Complaints allege that the cell-phone “antenna is the most efficient means of depositing energy into the human body and penetrating human tissue” and that “the maximum Specific Absorption Rate exists at the antenna ‘feed point.’ ” Plaintiffs allege that defendants “did not disclose ... that the cell phone antenna should be extended when the device is in use.” 34 In another allegation of this type, plaintiffs allege that defendants failed to tell them that they could “use a headset or take other precautionary measures to reduce ... radiation exposure from cell phones....” To the extent that these claims are not read as claims that cell phones are unreasonably dangerous, but as claims that, in violation of the CPPA, defendants omitted information that was material to plaintiffs’ decisions about whether to purchase or how to use a cell phone, the claims are not conflict-preempted. 35
*785 If plaintiffs’ claims relating to (allegedly) non-FCC-compliant cell phones or all of their CPPA claims are preempted, this would have to be on the ground of field preemption rather than conflict preemption. We consider next whether the federal government has so occupied the field with respect to cellular telephones that the state regulation potentially involved here (i.e., tort and statutory damages) is preempted.
VI.
Defendants and
amici
argue, and the Superior Court found, that all of plaintiffs’ claims are preempted because federal law so occupies the field of radio communication “as to make reasonable the inference that Congress left no room for the States to supplement” federal regulation.
Cipollone,
We think that there can be no legitimate dispute that the federal government has long dominated the regulation of the technical aspects of radio communication, including those relating to cellular telephony.
37
Moreover, in passing the Telecom
*786
munications Act, Congress emphasized the importance of nationally uniform requirements affecting cellular telecommunications. H.R. Rep. 104-204 explains that, to facilitate the goal of building a “cellular telecommunications network!,] ... it is in the national interest that uniform, consistent requirements, with adequate safeguards of the public health and safety, be established as soon as possible.” H.R. Rep. 104-204, pt. 1, at 94. Further, observing that “local concern about the potential effects of radio frequency emission levels” is “at times not supported by scientific and medical evidence,”
id.
at 95, Congress appeared to signal a preference for leaving the matter of RF emissions standards in the hands of federal agencies. In addition, early on, the FCC indicated its preemptive intent with respect to technical standards in cellular communication. In its 1981 order accompanying its first final rule on cellular communications, the FCC explained that “we are asserting federal primacy over the areas of technical standards and competitive market structure for cellular service” because doing so is necessary to further the “essential objective [of] ... achieving] nationwide compatibility.”
carefully developed the technical requirements essential for efficient spectrum re-use and nationwide compatibility, while providing sufficient flexibility to accommodate new technological innovations. It is imperative that no addi *787 tional requirements be imposed by the states which could conflict with our standards and frustrate the federal scheme for the provision of nationwide cellular service.
Id.
But there is also considerable evidence that, heretofore, the FCC has not intended to occupy
fully
the field of cellular-telephone-industry regulation. The FCC stated in its 1981 rulemaking order that it was “not exercising all of the authority we have to assert federal primacy[,]” explaining that states “can continue their complementary role regarding certification of carriers to provide mobile or cellular service.”
In light of the evolving nature and the somewhat mixed bag of statements by the FCC about the extent to which it intended to occupy the field relating to cell-phone RF emissions, we must agree with the conclusion that the Fourth Circuit reached in
Pinney
on the issue of field preemption: federal law “does not ‘so thoroughly occupy [the] legislative field [of wireless telecommunications] as to make reasonable the inference that Congress left
no room
for the states to supplement it.’ ”
The questions we must now address are whether plaintiffs’ (possible) claims with respect to non-FCC-compliant cell phones and their CPPA claims fall within some
portion
of the field where the FCC left no room for state regulation.
Cf. Pac. Gas & Elec. Co.,
VII.
As already noted, in this proceeding, the FCC has not stated a position with respect to whether claims with respect to (allegedly) non-FCC-compliant cell phones are preempted. As to pre-August 1, 1996 cell phones, the regulatory history informs us that FCC policy was that pre-August 1, 1996, RF transmitting devices should com *788 ply with the RF standard that the FCC adopted as of that date, but that the agency did not require a recall or new testing of older devices or take other uniform action to ensure the safety of such devices (other than asserting its belief that “most existing devices already complied]” with the new standard). Guidelines for Evaluating Environmental Effects of Radiofrequency Radiation, 11 F.C.C.R. 15123, 15168, ¶ 118 (1996). The agency stated that if it had “reason to believe that a previously authorized device may cause exposures in excess of the guidelines, we may request environmental information and require that the device be re-authorized based on compliance with the guidelines.” Id. Because the FCC did not purport to assure that older devices met the RF radiation standards that the agency established after balancing various policy considerations, we are not persuaded that any claims plaintiffs wish to pursue premised on allegations that their early-model, non-FCC-certified cell phones were unreasonably dangerous, are preempted. We leave it to the parties and to the trial court to sort out whether plaintiffs do intend to pursue claims that their cell phones did not comply with the FCC SAR standard.
We reach a similar conclusion about plaintiffs’ CPPA claims. The various FCC orders and guidelines that we have discussed throughout this opinion reveal that the FCC has left it as a matter of manufacturer discretion what information to provide to consumers about the use of their cell phones. 39 To our knowledge, the FCC also has not established a process for requiring manufacturers to submit consumer instructions for approval. Thus, we see no evidence that the federal government has purported to occupy entirely the field of consumer disclosures to cell-phone purchasers. The Supreme Court’s analysis in Wyeth indicates that when the regulatory scheme leaves responsibility with manufacturers with respect to providing updated information to consumers and when the agency has given no more than “passing attention” to an issue, preemption should not apply to bar claims that the manufacturer failed to provide material information. 40 Finally, we do not discern— and appellees and amici, who have given short shrift to plaintiffs’ CPPA claims, do not inform us — that to achieve an efficient and effective nationwide cell-phone-communications network, there needs to be uniformity with respect to such matters as what disclosures must be made to consum *789 ers. 41 Accordingly, we conclude that plaintiffs’ CPPA claims are not preempted. Again, we leave it to the parties and the trial court to sort out the precise contours of the claims, and to the trial court to determine, as the occasion arises, whether the allegations of the Complaints sufficiently state claims under the CPPA.
VIII.
For the foregoing reasons, we conclude that plaintiffs’ claims that are premised upon allegations that defendants’ FCC-certified cell phones are unreasonably “dangerous” because of RF radiation are barred under the doctrine of conflict preemption. Plaintiffs’ claims with respect to their pre-1996 cell phones (or other allegedly non-FCC-compliant cell phones), and at least some of their claims under the CPPA that defendants have made affirmative misrepresentations or material omissions with respect to plaintiffs’ cell phones, are not preempted. Accordingly, the judgment of the Superior Court dismissing the Complaints is
Affirmed in part and reversed in part, and the matter is remanded for further proceedings consistent with this opinion.
Notes
. The plaintiffs/appellants are Michael Patrick Murray and Patricia Ann Murray; Richard Schwamb and Eret Schwamb; David C. Keller and Marsha L. Keller; Pamela A. Cochran and Gilbert Cochran; Baldassare S. Agro and Debrah A. Agro; and Dino E. Schofield.
. See D.C.Code §§ 28-3904 and -3905 (2001). The Complaints refer to this statute as the "District of Columbia Consumer Protection Act of 2000," but the citations in the Complaints are to D.C.Code § 28-3904, a section of the CPPA that pre-dates 2000. The CPPA (specifically, D.C.Code § 28 — 3905(k)) was amended in 2000 to permit plaintiffs to sue in a representative capacity and to increase the amount of statutory damages available to a successful plaintiff. See 47 D.C.Reg. 6574, 6615 (Aug. 18, 2000).
. Among other theories, defendants asserted the theory of complete preemption to establish exclusive subject-matter jurisdiction in the federal forum.
See Wireless,
. "SAR is a measure of the rate of energy absorption due to exposure to an RF transmitting source.”
Wireless,
. The standard that the FCC adopted was based in part on the 1992 recommendations of ANSI and the Institute of Electrical and Electronics Engineers, Inc. ("IEEE''), and in part on criteria published by the National Council on Radiation Protection and Measurements ("NCRP”).
See Guidelines for Evaluating the Environmental Effects of Radiofrequency Radiation,
12 F.C.C.R. 13494, 13496, ¶ 3 (1997). Previously, in 1985, the FCC had adopted the 1982 ANSI recommendations "as a processing guideline for human exposure to RF radiation.”
Biological Effects of Radiofrequency Radiation,
. Although the Complaints include such allegations, plaintiffs disclaim an intent to assert "fraud-on-the agency” claims. As defendants argue, it is likely in any event that such claims would be barred under
Buckman Co. v. Plaintiffs’ Legal Comm.,
.According to the Complaints,
”[h]ol spots” are created by the convergence of airwaves by reason of reflection and refraction off of the irregular surfaces of the human head and attenuation by passage through different layers of skin, fat, bone, etc.... [H]ot spots are as much as 200 times higher tha[n] the RF radiation from the cell phone and results [sic] in harmful heating of the brain.
. The Complaints also include separate counts for conspiracy and loss of consortium. Civil conspiracy, however, “is not an independent tort but only a means for establishing vicarious liability for an underlying tort.”
Coulter v. Gerald Family Care, PC,
. These three forms of preemption are not "rigidly distinct” and may overlap at times.
Crosby v. Nat’l Foreign Trade Council,
.
Riegel
and its predecessors effectively foreclose plaintiffs’ argument that a lawsuit for damages is immune from preemption altogether because it "do[es] not seek ... to impose new or different technical standards” and merely "seek[s] compensatory damages for ... personal injuries.” In
Riegel,
the Supreme Court held that, for purposes of preemption, state law includes state tort law whether applied in lawsuits for injunctive relief or damages. Quoting
Cipollone,
. We note in addition that the FCC "takes no position on whether provisions of the Telecommunications Act expressly preempt plaintiffs' suit.” Similarly, in the trial court, the FCC assumed only arguendo that the statute does not expressly preempt plaintiffs' claims. The FCC's non-position on the express preemption issue could be read to imply that the agency does not find the Superior Court's interpretation of "personal wireless service facilities” untenable.
.
See, e.g., Merlotto v. Town of Patterson Zoning Bd. of App.,
. The FCC’s determination in this formal agency proceeding is entitled to deference.
See Cellular Phone Taskforce v. FCC,
. These included the Environmental Protection Agency, the Food and Drug Administration ("FDA”), the Occupational Safety and Health Administration, and the National Institute for Occupational Safety and Health.
See Cellular Phone Taskforce,
. The legislative history of the Telecommunications Act reveals that Congress contemplated that the FCC would engage in just such balancing. H.R. Rep. 104-204 describes the relevant House Committee's belief that
it is in the national interest that uniform, consistent requirements, with adequate safeguards of the public health and safety, be established as soon as possible. Such requirements will ensure an appropriate balance in policy and will speed deployment and the availability of competitive wireless telecommunications services which ultimately will provide consumers with lower costs as well as with a greater range and options for such services.
H.R. Rep. 104-204, pt. 1, at 94 (emphasis added).
.
See also Cellular Phone Taskforce,
.
See Christensen v. Harris County,
In its recent decision in
Wyeth,
the Supreme Court clarified that courts are not to defer to an agency’s "mere conclusion that state law is pre-empted” because "agencies have no special authority to pronounce on pre-emption absent delegation by Congress. ...”
.
Cf. Altria Group, Inc. v. Good,
- U.S. -, -,
. We recognize that in its decision in
Pinney,
Third, the
Pinney
court gave weight to the fact that the FCC undertook its rulemaking relating to RF standards pursuant to the broadly applicable National Environmental Policy Act ("NEPA”) rather than pursuant to specific radio-communications legislation. 47 U.S.C. § 332.
. Plaintiff Michael Murray, for example, alleges that he “was exposed to non-ionizing non-heat effect radio frequency radiation ...
*779
which caused [his] adverse health effects and thereby caused the devastation that he and his family has [sic] had to bear.”
See Cellular Phone Taskforce,
. In some cases, a federal agency's decision not to regulate in an area renders state regulation permissible.
See, e.g., Ark. Elec. Coop. Corp. v. Ark. Pub. Serv. Comm’n,
.The fact of agency certification of equipment, or the lack of a certification scheme, has been a critical factor in other Supreme Court preemption cases as well. For example, in
Ray v. Atl. Richfield Co.,
Also significant to the Court’s decision in
Sprietsma
was the fact that the "Coast Guard has never taken the position that the litigation of slate common-law claims relating to an area not yet subject to federal regulation would conflict with 'the accomplishment and execution of the full purposes and objectives of Congress.’ ”
Sprietsma,
.
Cf. Farina,
. The circumstances here also differ from those in Wyeth, - U.S. -,
One reason the Court cited was that FDA regulations permit a drug manufacturer "to change a product label to add or strengthen a warning about its product without prior FDA approval so long as it later submits the revised warning for review and approval.”
Id.
at 1193 (citation omitted). Thus, the Court emphasized, under the FDA's regulations, manufacturers remain responsible for updating the labels for their particular drugs.
Id.
at 1196. Another fact the Court emphasized was that the FDA had paid no more than “passing attention” to the question of whether to warn against the dangers attendant to the intravenous method of administering Phener-gan.
Id.
at 1199. Here, by contrast, all manufacturers are required to test and self-certify their cell phones for compliance with a uniform standard. And, during its rulemaking process, the FCC weighed competing views about whether the standard it adopted should be modified or supplemented to take into account non-thermal effects of RF radiation, 12 F.C.C.R. at 13505, ¶¶ 28, 31, and it gave extensive, rather than "passing attention” to the issue of whether it should require RF emissions to be "as low as reasonably achievable in the face of scientific uncertainty....”
Cellular Phone Taskforce,
. Thus, we disagree with Judge Long's and defendants’ readings of the Complaints. Judge Long found, for example, that plaintiffs' strict-product-liability claim "is not an allegation that any defendant manufactured a product that actually did not comply with the existing legal standard that allowed its manufacturer to sell to the public.” Similarly, defendants assert that "it is undisputed that these cell phones [that plaintiffs used] were approved for use by the FCC, and were certified to meet the [federal] health and safety standards for RF emissions.”
. Schofield Compl. ¶ 24; Schwamb Compl. ¶¶ 21, 22; Keller Compl. ¶ 21; Agro Compl. ¶ 32.
. Plaintiffs' Mot. for Remand for Lack of Subject Matter Jurisdiction at 1.
. Id. at 27, 41.
. Plaintiffs' counsel lamented that "the people who bought the particular phone prior to [the FCC’s adoption of the current SAR limit] now exceed [the limit], but they are not told that you are unsafe.” Mot. Hrg. Tr. 27, Oct. 24, 2005.
. We note that the FCC has not advised us of its position on whether such claims would be conflict-preempted. We express no opinion about whether the claims might be subject to dismissal on another ground (such as on the basis of the statute of limitations).
.We also note that, even if we were to construe 47 U.S.C. § 332(c)(7)(B)(iv) as expressly preempting plaintiffs' claims with respect to FCC-compliant cell phones, section 332(c)(7)(B)(iv) would not bar claims about injuries from cell phones that were not FCC-compliant, since it prohibits state "regulation] ... of personal wireless services facilities on the basis of the environmental effects of radio frequency emissions” only "to the extent that such facilities comply with the Commission’s regulations concerning such emissions.”
.
See Bell Atl. Corp. v. Twombly,
In
Twombly,
the Supreme Court admonished that "a plaintiff's obligation to provide the 'grounds’ of his ‘entitle[ment] to relief requires more than labels and conclusions” and that a "formulaic recitation of the elements of a cause of action will not do...."
Id.
at 555,
. See “Cell Phone Facts-Consumer Information on Wireless Phones” (Appellants’ Br. Ex. 11) at 8 (2003) (formerly available at http:// www.fda.gov/cellphones).
Of course, to prevail on a CPPA claim, a plaintiff must show that a misrepresentation or omission was material.
See Ft. Lincoln Civic Ass’n v. Ft. Lincoln New Town Corp.,
. It is not clear whether plaintiffs are asserting that they were not informed that the antennas on their (early-model) cell phones should be fully (rather than partially) extended, or whether they assert that defendants should have informed them that keeping antennas fully retracted increased the user’s exposure to emissions. As defendants have advised us in a Rule 28(k) letter, if the latter, plaintiffs may have difficulty proving allegations that defendants omitted material information about antennas on FCC-certified cell phones because an FCC technical bulletin advises that manufacturers' tests must ensure that RF levels meet the SAR standard even if the cell-phone antenna is fully retracted. See FCC Office of Eng’g & Tech., Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields, Bulletin 65, Supp. C ("OET Bulletin”) at 10, 40 (2001), http://www.fcc.gov/Bureaus/ Engineering — Technology/Documents/ bulletins/oet65/oet65c.pdf.
.To be clear, we do not hold that any and all CPPA claims that the Complaints may be read to contain survive the preemption challenge. For example, a claim under the CPPA that defendants omitted telling plaintiffs that the FCC SAR standards are not adequate cannot be distinguished in any material way from a failure-to-warn claim (i.e., a claim that defendants failed to warn defendants that FCC- *785 compliant cell phones are unreasonably dangerous), and would be preempted for the reasons we have already discussed.
. Plaintiffs respond by invoking a "presumption against preemption,”
Wyeth,
. Believing that "regulation was essential” to realize the "potentialities of radio” (a "new and far-reaching science”), Congress passed the Radio Act in 1927 as a “comprehensive scheme of control over radio communication.”
Nat’l Broad. Co. v. United States,
Pursuant to the 1934 Act, the FCC has been involved in overseeing cellular-telephone networks — a category of radio networks — since the inception of cellular technology.
See generally Il
ene K. Gotts & Alan D. Rutenberg,
Navigating the Global Information Superhighway: A Bumpy Road Lies Ahead,
8 Harv. J.L. & Tech. 275, 291 (1995) (explaining that “FCC regulation of mobile radio service dates back to the very creation of the FCC”). During the late 1960s, the agency began efforts to develop and regulate a nation-wide cellular system,
see, e.g., Inquiry Relative to Future Use of Frequency Band 806-960 MHz, Second
*786
Report and Order,
As to RF emissions specifically, the agency began inquiry into its "responsibility ... to consider the biological effects of radiofre-quency (RF) radiation” in 1979, requesting information but "not for the purpose of our promulgating radio frequency radiation health and safety standards” because "[tjhat is a function of the health and safety agencies”.
Responsibility of FCC to Consider Biological Effects,
.
See also City of Abilene v. FCC,
. For example, in the notice of rulemaking in which it adopted the current RF radiation standard for cell phones, the FCC explained that
[f]or purposes of evaluating compliance with localized SAR guidelines, portable devices shall be tested or evaluated based on ‘standard’ operating positions or conditions. In situations where higher exposure levels may result from unusual or inappropriate use of the device, instructional material should he provided to the user to caution against such usage.
11 F.C.C.R. at 15149, ¶ 69 (emphasis added). Similarly, in the FCC's OET Bulletin, issued to provide guidance to applicants for FCC equipment authorization, the FCC noted that cell-phone-antenna positions other than fully retracted or fully extended "can lead to excessive RF current flow on the chassis, maximum energy absorption in the cheek region may be expected.” OET Bulletin at 10. The agency advised manufacturers that "[s]ince such conditions do not represent normal usage, operating instructions and caution statements should be used to inform users to avoid operating with these antenna positions." Id. (emphasis added). These statements neither mandate that manufacturers make disclosures to cell-phone users nor prescribe disclosure language.
.
See Wyeth,
.
Cf. Head,
