In these direct criminal appeals, Udo Mankiewicz and Glenn Zawadzki challenge the sentencing determinations of the district court that followed their pleas of guilty to conspiring to possess marijuana with intent to distribute. See 18 U.S.C. § 846. Each defendant was sentenced to 87 months in prison, a fine, and four years’ supervised release. For the reasons set forth in the following opinion, we reverse the judgments of the district court and remand the cases for further proceedings with respect to the sentences.
I
BACKGROUND
The basic facts of the underlying offense are not in dispute. In February and March 1994, Mr. Mankiewicz discussed buying marijuana with a confidential informant named “Bob.” On March 10, Bob delivered 500 pounds of marijuana at a cost of $550 per pound to a motel parking lot. Glenn Zawadzki and his father led Bob to Mr. Zawadzki’s warehouse. Upon arrival, Bob drove his marijuana-laden recreational vehicle inside, and the three men then unloaded the bales. When Mr. Mankiewicz arrived, he refused the delivery because he did not like the quality. Bob left with the rejected load.
On June 21, 1994, Bob delivered 700 pounds of marijuana at a cost of $700 a pound. Mr. Mankiewicz inventoried this marijuana and approved it. He paid Bob $195,000 as down payment for the marijuana. At sentencing, both defendants contended that the rejected load ought not be considered in calculating the offense level.
In their plea agreements each defendant stipulated to prior drug deals with Bob between 1986 and 1989, involving a total of 800 pounds of marijuana. The plea agreements differed, however, with respect to the significance of those transactions in the sentencing process. Mr. Mankiewicz stipulated that these prior drug transactions constituted “relevant conduct” within the meaning of U.S.S.G. § lB1.3(a)(2); Mr. Zawadzki, although admitting his participation in the transactions, did not acknowledge that these actions constituted “relevant conduct.”
In the presentence report and its supplement, the probation officer recommended that the total amount of marijuana be calculated at 2,000 pounds. This figure included both the 500 pounds delivered but returned March 10,1994 and the 700-pound load delivered June 21, 1994. It also included as relevant conduct the 800 pounds purchased from *402 Bob between 1986 and 1989. In addition, the probation officer recommended that each defendant receive a 2-level upward adjustment in his offense level on the ground that each individual was an organizer or manager. See U.S.S.G. § 3Bl.l(c).
At their respective sentencing hearings, each defendant took exception to the recommendations contained in the presentencing report. As noted earlier, both defendants objected to the inclusion of the amount of marijuana that was rejected. Mr. Zawadzki also objected to the inclusion of the previous sales on the ground that these activities did not constitute “relevant conduct.” He claimed as well that he ought not be sentenced as an organizer or manager.
The district court concluded that the March 10 delivery ought to be included in the calculation. In its view, the receipt of this delivery “was no less a crime simply because Mr. Mankiewicz decided he wanted a better quality, and the delivery of the substitute load was no less a crime because it was a substitute for the original ... marijuana.” R.100 at 32. The court also included the prior sales in each calculation as “relevant conduct.” Finally, the court determined that each defendant was a leader or organizer of the transactions under U.S.S.G. § 3Bl.l(c).
II
DISCUSSION
A. Counting the Rejected Delivery
Both Mr. Mankiewicz and Mr. Zawadzki contend that the district court ought not have counted the earlier rejected shipment of March 1994. The government agrees with the defendants that the district court committed error in this regard and requests that we remand the matter to the district court for redetermination of the sentence. We believe that the position taken by the parties is the correct one and that the district court’s acceptance of the probation officer’s recommendation was error.
At the outset, we think it important to emphasize that the agreement of the defendants and the government on this matter is not binding on the district court. The court was therefore quite correct in determining that, despite the agreement of the parties, it had an independent responsibility to determine the legal question as to whether the weight of the rejected load ought to be included in the base offense level.
We also believe, however, that the parties are correct in their submission that the base offense level ought not include the rejected amount. The starting point of the court’s sentencing analysis must be the nature of the offense of conviction. Here, the defendants were charged with, and pleaded guilty to, a single count of conspiracy to possess with intent to distribute marijuana. The evidence established that Mr. Mankiewicz negotiated with Bob for the delivery of a single load of marijuana. As the government points out in its brief, there is no question that, throughout the charged conspiracy, his intent, and that of Mr. Zawadzki, was to acquire only that load. No other quantity was foreseeable to them.
We think the government is correct when it responsibly notes, in both its brief and oral submission, that this result is the one most compatible with the intent of the Guidelines. As counsel for the government pointed out, the commentary to U.S.S.G. § 2D1.1 states that, “in a reverse sting, the agreed-upon quantity of the controlled substance would more accurately reflect the scale of the offense because the amount actually delivered is controlled by the government, not the defendant.” U.S.S.G. § 2D1.1 comment, (n.12). As counsel pointed out at oral argument, this section is intended to ensure that unscrupulous law enforcement officials do not increase the amount delivered to the defendant and therefore increase the amount of the defendant’s sentence. Although there is absolutely no evidence that such a motivation actually existed in this case, the facts demonstrate the danger. At oral argument, we were informed that the marijuana that was supplied was the government’s. It would have been possible for the confidential informant to supply low-grade marijuana in the expectation of its being rejected and in that way to increase the amount received, but never retained for distribution, by the defendants.
*403 B. Counting Uncharged Drug Transactions as “Relevant Conduct”
1.
Mr. Zawadzki submits that the district court erred in including the earlier uncharged marijuana offenses in the “relevant conduct” calculations.
1
“Relevant conduct” includes “all acts and omissions committed ... by the defendant [that were] part of the same course of conduct or common scheme or plan as the offense of conviction.” U.S.S.G. § 1B1.3(a). In determining whether uncharged offenses should be classified as “relevant conduct,” our case law holds that the district court ought to consider the similarity, regularity and temporal proximity of the uncharged acts.
2
See United States v. Beler,
Mr. Zawadzki also contends that the district court did not make particularized findings that the unconvicted activities bore the necessary relation to the convicted offense. *404 Because the district court made only conclusory statements, he submits that this court should remand for further findings by the district court.
In reply, the government submits that the district court correctly determined that the uncharged conduct, namely the 1986-89 marijuana purchases, constituted relevant conduct. It asserts that the uncharged drug transactions can be justified under either prong of U.S.S.G. § 1B1.3. First, it contends that the offense of conviction was part of “a common scheme or plan.” U.S.S.G. § 1B1.3(a)(2) comment, (n.9);
see United States v. Acosta,
Second, the government submits in the alternative that the earlier transactions and the offense of conviction were also part of the same “course of conduct.” In its view, there is a great deal of similarity in the acts: In the earlier transactions and the present one, Mr. Mankiewicz negotiated with Bob for the delivery; Mr. Zawadzki received and stored the marijuana. There was also a pattern of regularity: From 1986 to 1989, at least six loads of marijuana were delivered. When the evidence shows that the defendants were involved in an ongoing course of conduct, argues the government, temporal proximity is not an indispensable criterion. 3
2.
In his plea agreement, Mr. Zawadzki admitted in paragraph 6 that
during the time period from approximately 1986 until late 1988 or early 1989, he received additional loads of marijuana from Bob, sometimes storing the loads of marijuana in his residence. Negotiations for those loads o'f marijuana were handled by Udo Mankiewicz and Bob. Defendant Glenn Zawadzki’s role was to receive, store and assist in subsequent distribution of the marijuana, as directed by Mankiewicz.
R.64 at 6. He further admitted that the weight of the marijuana received during that time period was approximately 800 pounds. At the change of plea hearing, this admission was recited verbatim by the Assistant United States Attorney. Mr. Zawadzki then acknowledged, while under oath, that the representation of the prosecutor was correct “in every detail.” R.100 at 15A. Consequently, the factual basis for Mr. Zawadzki’s participation in the earlier illegal activity was well established. There remains, however, the issue of whether °Mr. Zawadzki’s participation in those illegal activities can be considered “relevant conduct” within the meaning of U.S.S.G. § 1B1.3. This is an issue of law which the district court had an independent duty to determine.
An examination of the sentencing proceedings reveals that Mr. Zawadzki made a specific objection to the probation officer’s report that recommended that the previous illegal activity be considered “relevant conduct.” Nevertheless, although the district court concluded, in summary fashion, that the total amount involved was 2,000 pounds, it never addressed or made a specific determination as to whether the earlier conduct *405 constituted “relevant conduct” within the meaning of the Guidelines.
We believe that it was incumbent on the district court to address specifically the contentions of the defendant and to support its conclusion with sufficient factual determinations.
See United States v. Pollard,
This court has made clear that, although it is highly desirable for the district court to make findings with respect to the determination of whether prior bad acts constitute “relevant conduct,” we shall not reverse because of formal defects in the district court’s articulation of a conclusion obviously made after thoughtful consideration of the record in its totality.
See United States v. Acosta,
C. Leadership Role under U.S.S.G. § SBl.l
At sentencing, the probation offieer recommended that Mr. Zawadzki be treated as a leader or organizer of the conspiracy. The Guidelines require that the offense level be increased by 2 points if the defendant was “an organizer, leader, manager, or supervisor in any criminal activity.” U.S.S.G. § 3Bl.l(e). The government must establish that the defendant “had some real and direct influence” on other participants in the criminal activity.
United States v. Mustread,
We do not believe that the record in this case can support the district court’s determination that Mr. Zawadzki was a leader or organizer of the conspiracy. The commentary accompanying this guideline lists many factors for the district court to consider in determining whether the defendant ought to be characterized as a leader or
*406
organizer. This list of factors is not exhaustive. On the other hand, a single factor does not automatically justify the imposition of this enhancement.
See United States v. Billingsley,
Here, the district court, acting on the recommendation of the probation officer and in face of the silence of the government, focused on the fact that Mr. Zawadzki had recruited his father to help him. His directions to his father were apparently limited to showing him where the bales ought to be stacked and asking his father to accompany the informant to the motel where the informant would deal with Mr. Mankiewicz who, it is clear, ran the operation.
4
We do not believe that this relationship is the sort of “real and direct influence, aimed at furthering the criminal activity,”
Mustread,
This record will not support the characterization that Mr. Zawadzki was a leader or organizer. It was error for the district court to rely on the probation officer’s recommendation in the absence of record support. Upon resentencing Mr. Zawadzki, the district court shall not include this enhancement.
7
See Brown,
Conclusion
The judgments of the district court are reversed, and the cases are remanded for resentencing- in accordance with this opinion.
Reversed And Remanded.
Notes
. Mr. Mankiewicz has chosen not to bring any contention with respect to the determination of “relevant conduct" to this court. Unlike Mr. Zawadzki, Mr. Mankiewicz stipulated in his plea agreement that the earlier offenses constituted "relevant conduct.”
Plea agreements are contractual in nature, albeit "unique” contracts. Because they implicate the deprivation of human freedom, the rules governing their interpretation, although having their roots in the principles of contract law, also acknowledge that "concern for due process out-weights] concern for freedom of contract.”
United States v. Sandies,
Before this court, Mr. Mankiewicz makes no argument that his waiver of the “related conduct” issue was not knowing and voluntary.
See United States v. Olano,
. The government notes that "temporal proximity” is not one of the enumerated criteria in the Commentary’s definition of "scheme or plan." That criterion relates to "same course of conduct.” See U.S.S.G. § 1B1.3 comment, (n.9).
. The government also asserts that we can affirm the defendants' sentences on another ground. Because the defendants stipulated in their plea agreements that they participated in the marijuana transactions between 1986 and 1989, the govemment submits, we are required to treat those stipulated offenses as additional counts of conviction. See U.S.S.G. § 1B1.2(a), (c). The government's reliance on § IB 1.2 for the first time on appeal constitutes waiver.
.
See United, States v. Brown,
. See United States v. Bell, 28 F.3d 615, 618 (7th Cir. 1994) (concluding § 3B1.1 enhancement was improper without evidence tending to show that the defendant claimed a larger cut of the proceeds or exercised control over another co-conspirator or over drugs).
.
See Brown,
.The probation officer opined that, in the absence of this enhancement, Mr. Zawadzki would be eligible for sentencing under U.S.S.G. § 5C1.2. The correctness of this view is not before us, and we therefore express no view as to its accuracy.
