Hernandez v. City of Napa, 781 F. Supp. 2d 975

Hernandez was arrested on April 1, 2008 for domestic violence against her ex-boyfriend Green after Napa City Officers Bender and others responded to a 911/Hang-up call.
Deputy Hallman of the Napa County Sheriff's Department arrived as cover; Hallman recorded part of the incident but did not book the recording or write a report.
Hernandez told officers varying versions of what happened; she repeatedly stated that nothing happened and she was not injured.
Officer Bender believed Hernandez to be the dominant aggressor based on his observations, Green’s condition, and statements; Hernandez was arrested for a misdemeanor under § 243.
There is evidence of internal recordings and statements suggesting possible inconsistencies and investigative gaps, including not addressing trespass, self-defense, or prior DV history.
Plaintiff later provided additional statements and engaged in post-arrest communications; the defense raised Monell and state-law claims, and City Hall/Chief Melton were included in early proceedings

Issue	Plaintiff's Argument	Defendant's Argument	Held
Probable cause for arrest	Hernandez argues Bender lacked probable cause as dominant aggressor, ignoring self-defense and trespass issues.	Bender had probable cause based on injuries to Green and statements aggregating the incident under DV statutes.	Triable issue of fact exists; probable cause not conclusively established.
Conspiracy to falsely arrest	Evidence shows a meeting of minds among Bender, Hallman, and Green to arrest Hernandez.	No overt conspiracy; evidence insufficient to prove a common objective; jury should decide.	Summary judgment denied; conspiracy issue may proceed to trial.
Monell liability	City's patterns of ignoring complaints against officers show deliberate indifference leading to false arrest.	No proven City policy or widespread practice; Monell claim lacks evidence of a policy or custom.	Monell claim against City and Chief Melton granted in part; Monell claim dismissed.
Qualified immunity	Officers violated clearly established rights by false arrest and conspiracy, so no qualified immunity.	Officer's actions could be reasonable under the law at the time; qualified immunity applies if reasonable.	Officer Bender not entitled to qualified immunity; summary adjudication denied on that basis.
State-law false arrest	False arrest under California law given lack of probable cause.	If probable cause exists, state-law false arrest claim bar is valid.	Triable issue as to probable cause requires denial of summary adjudication.

Grant v. City of Long Beach, 315 F.3d 1081 (9th Cir. 2002) (probable cause assessment based on totality of circumstances at arrest)
Beier v. City of Lewiston, 354 F.3d 1058 (9th Cir. 2004) (probable cause and the standard for reasonable belief)
Adams v. Williams, 407 U.S. 143 (U.S. 1972) (probable cause does not require evidence of every element; practical assessment)
Wong Sun v. United States, 371 U.S. 471 (U.S. 1963) (probable cause and evidentiary limits to post-arrest information)
Arpin v. Santa Clara Valley Transp. Agency, 261 F.3d 912 (9th Cir. 2001) (independent investigation required for probable cause from an accuser)
Broam v. Bogan, 320 F.3d 1023 (9th Cir. 2003) (emphasizes exculpatory evidence and investigation in probable cause analysis)
Williams v. California, 34 Cal.3d 18 (Cal. 1983) (duty to protect and the limits of governmental liability in a special relationship)
Monell v. Dept. of Social Services, 436 U.S. 658 (U.S. 1978) (local government liability for policies or customs; proof of causation)
Trevino v. Gates, 99 F.3d 911 (9th Cir. 1996) (liability for municipal policy requires duration, frequency and consistency)
Grant v. City of Long Beach, 315 F.3d 1081 (9th Cir. 2002) (probable cause assessment)