Western Growers, the California and Arizona Leafy Greens Marketing Agreements (LGMA), Factor IV solutions, and Food Safety CTS, collaborated on developing the new LGMA Approved Appendix S: Harvest Equipment Cleaning and Sanitation. The Appendix S supports the implementation of Issue 8 in the LGMA Metrics. 

Appendix S provides detailed, practical procedures for cleaning and sanitizing harvest equipment involved in leafy green harvest operations.  

Key highlights from Appendix S include: 

• Hygienic Design Requirements for new and existing harvest equipment 

• Master Sanitation Schedule (MSS) templates and planning tools 

• 7-Step SSOPs for daily cleaning and sanitizing of harvest machinery 

• Periodic Equipment Cleaning (PEC) protocols for hard-to-reach or niche areas 

• Verification Methods, including visual inspections, ATP swabbing, and microbial testing 

• Guidance on PPE, sanitation tools, and chemical use with concentration verification 

Find appendix S here: Appendix S – Harvest Equipment Cleaning and Sanitation – 5/12/2025