Specifications include, but are not limited to: Contractor shall work all collection accounts, previously placed by the City of Scottsdale, regardless of the amount, as long as the most recent date of prior payment or of service is within the statutory period. The Contractor shall provide a computerized report to the Contract Administrator by the 15th of each month showing the amount collected on each debt during the previous month and the updated status of all remaining accounts in the format requested by the Contract Administrator to include but not limited to the age of the receivable and next scheduled collection effort. Required performance measurements will include what percentage of referrals are collected and days sales outstanding (DSO) by account (to recognize how long it took to collect from the time of referral). The Contractor shall submit a check, made payable to the City of Scottsdale, for full payment of debts collected by the 15th of each month, to the Contract Administrator. The check shall be accompanied by a report listing account detail, dollars collected, and account type.