Skip to main content

8.310 - OC Spray Chain of Custody

Effective Date: 09/01/15


This policy applies to the storage, tracking, and accountability of Oleoresin Capsicum (OC) spray through the various channels of custody throughout the Seattle Police Department. This policy does not cover the tracking of OC spray following its use in a force incident, which is covered in POL 8.400.

1. The Quartermaster (QM) Shall Maintain The Department OC Supply

QM shall maintain an adequate supply of MK-3, MK-4, MK-9, MK-21 and MK- 46 spray units.

QM will also maintain a register of serial numbers for each unit of OC spray.

2. Stationmasters Shall Control OC Spray Units at the Precinct/Section Level

The stationmaster shall control the stock of all types of OC Spray at the precinct level.

Only the stationmaster/designee can issue MK-3, MK-4, and MK-9 OC Spray from precinct supplies.

Each precinct shall have a procedure to obtain OC Spray during non- business hours.

See 8.310-TSK-1 Issuing MK-3, MK-4, and MK-9 OC Spray to Officers

3. Non-Precinct Personnel Shall Obtain OC Spray Directly from the Quartermaster

4. Precinct Operation Lieutenants Are Responsible For MK-21 and MK-46 OC Spray Issued to Them

MK-21 and larger OC Spray Units will be stored in a secured, centralized location.

When officers are issued these units for various reasons, they will fill out the logout and login time for the item on the Less Lethal Deployment Log Sheet (form 1.80)

Operations Lieutenants are responsible for monthly checks of the log sheet to verify accuracy and completeness.

See 8.310-PRO-1 Checking Out MK-21 and Larger OC Spray Units

5. Officers Are Responsible For MK-3, MK-4, and MK-9 OC Spray Issued to Them

Stationmasters shall record the serial number from each MK-3, MK-4, or MK- 9 spray when issued to an individual officer.

Officers are responsible for reporting lost or stolen OC spray to their supervisors.

6. The Audit, Policy, and Research Section Shall Conduct Audits of OC Spray Registers

8.310-PRO-1 Checking Out MK-21 and Larger OC Spray Units


1. Requests to check out OC Spray unit from a Lieutenant or above.


2. Issues the approved OC Spray unit to the officer.


3. Records the logout of the unit on the Less Lethal Deployment Log Sheet (form 1.80).

4. Utilizes the OC Spray in accordance with Department policy, as needed.

5. Returns the OC Spray after use.

6. Records return of the OC Spray on the same line previously logged out on the Less Lethal Deployment Log Sheet (form 1.80)

If the OC Spray canister was depleted, notes on the log sheet and notifies Lieutenant.


7. Verifies the OC Spray was returned or depleted in the respective use of force report.

8.310-TSK-1 The stationmaster when issuing MK-3, MK-4, and MK-9 OC spray to officers

1. Obtains a lot of MK-3, MK-4, or MK-9 OC Spray Units and stores in secured area of the precinct.

2. Receives request for OC Spray from an officer.

3. Records the serial number from the OC Spray canister on the OC Spray Issuance Record (form 1.85), as well as the officers name and serial number.

4. Issues OC canister to the officer.


Adrian Diaz, Chief of Police
Address: 610 5th Avenue, Seattle, WA, 98104-1900
Mailing Address: PO Box 34986, Seattle, WA, 98124-4986
Phone: (206) 625-5011
Contact Us

Newsletter Updates


Sign up for the latest updates from Police

The Seattle Police Department (SPD) prevents crime, enforces laws, and supports quality public safety by delivering respectful, professional, and dependable police services. SPD operates within a framework that divides the city into five geographical areas called "precincts".

Site Disclaimer: The Seattle Police Department's website was developed to provide general information. Data contained at this location is generally not reviewed for legal sufficiency. SPD documents displayed are for reference purposes only. Their completeness or currency are not guaranteed. Links or references to other information or organizations are for reference only and do not constitute an endorsement.