ORDERED that the order is affirmed insofar as appealed from, with one bill of costs payable to the respondents appearing separately and filing separate briefs.
On November 22, 1996, an employee of the defendant Brooklyn Union Gas Company (hereinafter Brooklyn Union) visited the house of the defendants Dorothy E. McLeod and Vivian McLeod (hereinafter the McLeod defendants), shut off the gas to a hot water heater that was reportedly leaking water, and tested for, but did not detect, the presence of gas in the air. While the hot water heater was being replaced, an explosion occurred injuring the plaintiffs Allen Clarke, Eric Brown, and Tiffany McLeod. The instant actions, including a suit by Dorothy McLeod on behalf of Tiffany McLeod (hereinafter the McLeod plaintiffs), were commenced. The Supreme Court granted the McLeod defendants' motion and Brooklyn Union's cross motion for summary judgment. We affirm.
The McLeod defendants demonstrated their entitlement to summary judgment by presenting evidence that, inter alia, they neither smelled any gas in the house nor worked on the heater. As Clarke merely speculated that the McLeod defendants caused the alleged injury-causing condition (see Johnson v. Sniffen, 265 A.D.2d 304; Davis v. City of New York, 255 A.D.2d 356), and failed to present any evidence in admissible form that they had actual or constructive notice of the condition (see Wozniak v. Filler, 245 A.D.2d 444; Mittendorf v. Brooklyn Union Gas Co., 195 A.D.2d 449), the Supreme Court properly granted summary judgment to the McLeod defendants.
Brooklyn Union also established its entitlement to summary judgment by furnishing evidence that it neither created nor had notice of any alleged dangerous condition. Clarke and the McLeod plaintiffs failed to raise triable issues of fact regarding Brooklyn Union's liability, in that they failed to demonstrate that it had notice of a gas leak (see Mittendorf v. Brooklyn Union Gas Co., supra) or of an alleged defect in the shut-off valve it allegedly failed to inspect (see Bell v. Brooklyn Union Gas Co., 193 A.D. 669; Doster v. Binghamton Gas Works, 197 Misc. 810). In addition, since the McLeod plaintiffs failed to submit the "Parts Protection Plan" purportedly covering the shut-off valve, they failed to substantiate their claim that Brooklyn Union breached a contractual duty to inspect and replace the valve (see generally Glendora v. Gallicano, 206 A.D.2d 454). In any event, the purported expert affidavit of the McLeod plaintiff's engineer, which was not notarized, was inadmissible (see CPLR 2106; Laventure v. McKay, 266 A.D.2d 516; Doumanis v. Conzo, 265 A.D.2d 296; Rum v. Pam Transp., 250 A.D.2d 751), and therefore was insufficient to establish that the shut-off valve was defective. Accordingly, Brooklyn Union was also properly granted summary judgment (see Romano v. Brooklyn Union Gas Co., 250 A.D.2d 663).
The parties' remaining contentions are either academic, improperly before this court, or without merit.
ALTMAN, J.P., FLORIO, O'BRIEN and H. MILLER, JJ., concur.