From 1995 to 2003, John Salazar served as the elected sheriff of Huerfano County, Colorado, responsible for the management and supervision of the Huerfano County Jail. In 1998, two independent incidents of sexual assault occurred in the jail, both perpetrated by male detention officers against female inmates. In
Gonzales v. Martinez,
Ms. Tafoya brings this civil action under 42 U.S.C. § 1983 against Sheriff Salazar and Mr. Ruiz. 1 Ms. Tafoya claims that *915 Sheriff Salazar demonstrated deliberate indifference to the rights of inmates in his care and custody, subjecting her to cruel and unusual punishment in violation of the Eighth Amendment. The district court granted Sheriff Salazar’s motion for summary judgment, concluding that Ms. Tafo-ya had failed to provide evidence that Sheriff Salazar was actually aware of a substantial risk of harm to female inmates or to show a causal connection between his managerial deficiencies and the sexual assaults committed by Mr. Ruiz. Because we find that Sheriff Salazar was aware of prison conditions that were substantially likely to result in the sexual assault of a female inmate, and conclude that a jury might infer that the assaults on Ms. Tafo-ya were caused by these dangerous conditions, we reverse.
I. Background
In December, 2001, Ms. Tafoya was serving a one-year sentence at the Huerfa-no County Jail. Through her good behavior, Ms. Tafoya earned an appointment as a jail trustee. Jail trustees perform cooking and cleaning duties in exchange for a sentence reduction. At the time of the assaults, Ms. Tafoya was the only female trustee.
On December 21, 2001, Mr. Ruiz called Ms. Tafoya out of her cell to take the trash to the dumpster — one of her trustee duties. Mr. Ruiz escorted Ms. Tafoya outside to the dumpster, in violation of a jail policy that required female trustees to be accompanied by a female officer while cleaning or taking out the trash. Ms. Ta-foya then returned to the kitchen to clean, where she was sexually assaulted by Mr. Ruiz. Ms. Tafoya did not immediately report the assault because she feared that she would not be believed by the other officer on duty and would have her trustee status revoked.
On December 30, 2001, Mr. Ruiz was working the graveyard shift from 12:00 a.m. to 8:00 a.m. Ona Garcia, a female officer, was stationed in the control room where she could monitor the hallway leading to the kitchen over the surveillance cameras. There was no camera inside the kitchen. Ms. Tafoya entered the kitchen to perform her cooking and cleaning duties. While she was there, Mr. Ruiz entered, again in violation of the jail’s “no-contact” policy between male detention officers and female inmates. He informed Ms. Tafoya that Ms. Garcia was asleep in the control room and sexually assaulted Ms. Tafoya a second time.
Mr. Ruiz was not the first Huerfano County Jail detention officer to sexually assault a female inmate at the jail. Detention officers Robert Martinez and Dominick Gonzales sexually assaulted two female inmates in 1998. Both were convicted and imprisoned for the offenses. Sheriff Salazar faced three civil suits as a result of these assaults.
See Gonzales,
After the 1998 assaults, Sheriff Salazar took some steps to remedy the risk to female inmates of sexual assault. He fired Robert Martinez, the jail administrator and perpetrator of one of the assaults. He installed four additional surveillance cameras to cover unmonitored locations in the jail, including areas where the 1998 assaults had occurred, but not including the kitchen where the assault against Ms. Ta-foya later took place. He also hired additional female staff and implemented a half day sexual harassment training on Novém-ber 7, 2001, which Mr. Ruiz attended. The question we address here is whether, not *916 withstanding these steps, Sheriff Salazar’s alleged failure to implement and enforce other policies to protect female inmates amounted to deliberate indifference in violation of the Constitution.
II. Discussion
A.
The Eighth Amendment’s prohibition of cruel and unusual punishment imposes a duty on prison officials to provide humane conditions of confinement, including adequate food, clothing, shelter, sanitation, medical care, and reasonable safety from serious bodily harm.
Farmer v. Brennan,
Second, because the Eighth Amendment prohibits only cruel and unusual punishment, the prison official must have a sufficiently culpable state of mind to violate the constitutional standard. The standard of culpability necessary to an Eighth Amendment violation is one of deliberate indifference. “[A] prison official cannot be found liable under the Eighth Amendment for denying an inmate humane conditions of confinement unless the official knows of and disregards an excessive risk to inmate health or safety....”
Farmer,
Although deliberate indifference is a subjective inquiry, a jury is permitted to infer that a prison official had actual knowledge of the constitutionally infirm condition based solely on circumstantial evidence, such as the obviousness of the condition.
Farmer,
B.
After the 1998 assaults, Sheriff Salazar was on notice of the dangerous conditions in the jail and was aware that his own indifference toward jail operations had contributed to those conditions. Given his knowledge, Sheriff Salazar was under a duty not only to take reasonable measures to remedy the circumstances that directly led to the sexual assaults, but to cure his own lack of attention and unresponsiveness to inmate complaints and other indicators of serious problems with his detention staff.
1.
In
Gonzales v. Martinez,
As noted in Gonzales, Sheriff Salazar did not take an active role in the investigation of inmate complaints, in spite of his knowledge that his jail administrator did not take complaints seriously and was actively opposed to investigations. Id. at 1183, 1187. Those few complaints that were brought to Sheriff Salazar’s attention he dismissed by “attributing them to attitudes of the complainants, characterizing them as ‘troublemakers’ or ‘conjuring up’ incidents to ‘discredit’ his deputies.” Id. at 1187. Furthermore, Sheriff Salazar did not conduct regular employee evaluations, either to discipline poor performance or to determine which officers ought to be placed in positions of responsibility. Id. at 1183. He also did not conduct regular criminal background checks on his employees, and knowingly hired employees with criminal records showing a propensity for violent and dangerous behavior. 2
As further noted in Gonzales, Sheriff Salazar rarely visited the jail, allowing the undisciplined behavior of his staff to continue unchecked and unnoticed by him. Id. at 1183. The incidents that were documented suggest that disorderly behavior and debauchery were pervasive throughout the jail’s operations. For example, in a recorded incident, a detention officer allowed intoxicated inmates into the control room to learn how to operate the jail’s controls. Id. There were also several complaints by female inmates of sexual harassment and intimidation by Dominick Gonzales, one of the detention officers. In *918 1997, Mr. Gonzales entered the female dormitory and exposed himself to the inmates. He also made inappropriate comments to female inmates over the intercom, taunting the women to lift their shirts and expose themselves to the security cameras. Id. Mr. Gonzales was demoted for this behavior, in conjunction with another incident in which Mr. Gonzales was arrested at a local bar for harassing female dancers and threatening injury to the arresting officers, but this discipline did not prevent him from assaulting Amanda Guel in 1998. Id. at 1184-87.
Ms. Tafoya claims that many of the same deficiencies identified by this Court in Gonzales remained uncorrected thereafter, and were responsible, in part, for her assault by Mr. Ruiz.
2.
After the 1998 assaults, Sheriff Salazar made only minimal efforts to address the glaring safety problems at the jail. He established a “no-contact” policy for male officers and female inmates, installed several new surveillance cameras, hired additional female staff, and provided for a half-day staff training by an outside agency regarding the prohibition against sexual contact between staff and inmates. However, Ms. Tafoya provided evidence to show deliberate indifference by Sheriff Salazar, in spite of these reforms, including the fact that he made no effort to alter his own managerial strategy, impose a serious threat of discipline for policy violations upon his detention staff, or establish an adequate grievance procedure by which inmates could report officer misconduct with a reasonable expectation of serious investigation. In additional support of her claims, Ms. Tafoya offered the expert testimony of Tom Dalessandri to substantiate the degree to which conditions at the Huerfano County Jail deviated from generally accepted standards. 3
A prison official may be liable for a substantial risk of serious harm to inmates in spite of efforts reasonably calculated to reduce the risk, if he intentionally refuses other reasonable alternatives and the dangerous conditions persist. In
LaMarca,
Sheriff Salazar’s “no-contact” policy might have reduced the opportunity for
*919
assaults on female inmates by male detention officers if it had been enforced. However, Ms. Tafoya provided testimony that the policy was frequently violated, in part because there was not always a female detention officer on duty. The knowing failure to enforce policies necessary to the safety of inmates may rise to the level of deliberate indifference.
See, LaMarca,
Even beyond nonenforcement of the no-contact policy, the undisciplined culture of “anything-goes” among the detention officers remained unaddressed and unmitigated by Sheriff Salazar, who continued to employ a hands-off approach to jail management. Mr. Gene Tafoya, one of the detention officers at the jail, 4 testified that detention officers would arrive to work out of uniform, would sleep through their shifts, would be intoxicated while working, and would watch pornographic movies in the control room while on duty. Mr. Tafo-ya also testified that on several occasions Mr. Ruiz commented that he would like to have sex with certain female inmates and stated that he would like to see the female inmates with their “feet in the air.” App. 219. From such evidence of pervasive delinquency on the part of his staff, a jury might reasonably conclude that Sheriff Salazar was either aware of their behavior or aware that his lack of attention might result in dangerous conditions, particularly in light of the prior assaults.
To improve surveillance, Sheriff Salazar installed four additional cameras in the jail after the 1998 assaults. We agree that additional surveillance equipment was a reasonable response to the presence of blind spots where assaults could, and did, take place. However, Sheriff Salazar knew that blind spots remained even after the installation of the new cameras, and knew that having some cameras in the jail was not enough to deter assaults in unmonitored areas. 5 See Gonzales, 403 F.3d *920 at 1181 n. 5. Detention officers and inmates were aware of the unmonitored locations where illegal activity could take place out of sight of personnel in the control room. The kitchen where Ms. Tafoya was assaulted contained only a malfunctioning audio surveillance device, leaving Ms. Ta-foya vulnerable to an attack. Sheriff Salazar claims that he did not install more surveillance cameras because of budget constraints. Whether or not he failed to install more cameras out of deliberate indifference or lack of funding is a genuine issue of material fact to be considered by a jury.
Sheriff Salazar knowingly continued to employ detention officers with criminal records. He admits that he reviewed Mr. Ruiz’s application for employment prior to his hiring, which included a background check showing a DWAI conviction, a conviction for assault, and an arrest for resistance, destruction of city property, disturbance, and assault. After hiring, Sheriff Salazar failed to conduct any regular review of his employees. While employed at the jail, Mr. Ruiz was arrested for domestic violence in 1998 and DWAI in 2001. Mr. Dalessandri explained in his report that periodic evaluations including criminal background checks could have identified staff members that posed a particular threat to inmates. Contrary to the conclusion of the district court that “[t]here is nothing in the submitted record to suggest that the defendant Salazar had any knowledge that Ruiz had a proclivity toward sexual crimes,”
Tafoya v. Salazar,
Sheriff Salazar also failed to implement regular training programs in spite of the availability of such programs offered at little or no cost through organizations such as the County Sheriffs of Colorado, the National Sheriffs Association, the National Institute of Corrections in Colorado, and the American Jail Association, which give information and support to sheriffs regarding management and training of detention staff. To be sure, Sheriff Salazar implemented a half day training course on sexual harassment on a single occasion in November 2001. This demonstrates that the Sheriff was aware of the need for training, but a reasonable jury could conclude that this effort fell far short of what was reasonably required.
Perhaps most troubling, Sheriff Salazar failed to implement an adequate grievance procedure through which inmates could make complaints without fear of retribution, and which included serious investigation and response. In
Gonzales,
we found that Sheriff Salazar’s casual dismissal of complaints by inmates was an example of his deliberate indifference.
In 2001, the jail administrator eliminated the grievance system entirely because there were “too many complaints.” App. 82. Although there is no direct evidence in the record that Sheriff Salazar was actually aware of the elimination of the grievance procedure, a jury might reasonably conclude that Sheriff Salazar must have been aware of a significant obstacle to the filing of complaints based on their sudden scarcity as compared to the former inundation.
3.
As was true in
Gonzales,
Ms. Tafoya has presented evidence of disputed material facts sufficient to create a genuine question as to whether Sheriff Salazar was deliberately indifferent to the conditions at the Huerfano County Jail. In
Hovater v. Robinson,
C.
The district court found that Ms. Tafoya presented insufficient evidence regarding Sheriff Salazar’s knowledge of the substantial risk of harm to female inmates at the *922 jail because of passage of three years between the 1998 assaults and the assault on Ms. Tafoya in 2001. Although Sheriff Salazar is correct that no grievances were filed during this time period, this argument rings hollow given that there was no grievance procedure in place, and both inmates and staff were actively discouraged from making complaints. The elimination of the grievance procedure and the corresponding lack of complaints is indicative of the very supervisory problems with the Huerfano County Jail from which a jury might infer that Sheriff Salazar was aware of the likelihood that an assault would take place.
Sheriff Salazar additionally argues that even if he were deliberately indifferent to some conditions in the jail, this particular assault did not result from those conditions. Section 1983 “requires proof of an affirmative causal connection between the actions taken by a particular person ‘under color of state law’ and the constitutional deprivation.”
Williams v. Bennett,
Sheriff Salazar argues that his management decisions did not proximately cause Mr. Ruiz to sexually assault Ms. Tafoya, and to hold him accountable for actions taken by Mr. Ruiz, when Mr. Ruiz had no history of sexual misconduct, is essentially to adopt a theory of
respondeat superior.
However, acts or deficiencies that result in a jail atmosphere in which discipline and supervision is entirely lacking, may be sufficiently related to a particular instance of assault that a jury is permitted to conclude that the conditions proximately caused the assault.
See Hale v. Tallapoosa County,
The defendant’s concern that our holding here effectively imposes a theory of
respondeat superior
is misplaced. At the summary judgment stage, the requirement of deliberate indifference imposes a burden on the plaintiff to present evidence from which a jury might reasonably infer that the prison official was actually aware of a constitutionally infirm condition. Although a plaintiff may satisfy this burden by offering circumstantial evidence of the prison official’s knowledge, because a jury is permitted to infer deliberate indifference based solely on the obviousness of the threat posed to inmates,
Garrett v. Stratman,
III.
Because Ms. Tafoya did not address the dismissal of her state law claims in her opening brief, she has waived her
*923
state tort claims.
Harman v. Pollock,
We REVERSE the judgment of the district court dismissing the plaintiffs § 1983 claim, AFFIRM the dismissal of her state tort claims, and REMAND for further proceedings.
Notes
. Mr. Ruiz failed to respond to the complaint and the district court entered a default judg *915 ment against him. Order of Dismissal, Doc. 72 (Jan. 30th, 2007).
. Sheriff Salazar admitted that he hired Dominick Gonzales even though his record indicated a DWAI and a period of six months probation for "fighting.” App. 521. Sheriff Salazar also admitted that he "had to” have seen Mr. Ruiz’s criminal record which indicated an arrest and conviction for “resistance, destruction of city property, disturbance, and assault,” and a three months suspended license for DWAI. App. 555.
. Tom Dalessandri served for twenty years in law enforcement, including eight years as sheriff of Garfield County, Colorado. He is a member of the National Sheriffs’ Association, the Garfield County Jail Advisory Board, and a Chairman in the County Sheriffs of Colorado.
. Gene Tafoya is plaintiff-appellant Michelle Tafoya’s uncle. Although this relationship may present a question of credibility, we do not consider credibility on a motion for summary judgment.
Seamons v. Snow,
. Sheriff Salazar stated that in 1998 there were no surveillance cameras in the control *920 room where Ms. Guel was assaulted nor in the library or commissary areas were Ms. Gonzales was assaulted. App. 551.
. The three civil suits against Sheriff Salazar were filed on July 21, 1999, October 8, 1999, and January 28, 2000. The district court docket in Gonzales reveals that, at least in that case, discovery and additional discovery based on defendant's motion to dismiss had been completed prior to May 31, 2001 when the plaintiff's response brief was filed. See Docket sheet, Gonzales v. Martinez, No. 99-CV-1152 (D. Colo., filed June 21, 1999).
