BioCycle REFOR17


Building Best-In-Class
Organics Recycling
Local Policies
Food Waste Collection
Processing Infrastructure
March 30, 31, April 1, 2, 2020 • Sacramento, California • DoubleTree By Hilton Sacramento

Agenda/Events Pages: Monday Workshop & Demo | Tuesday & Wednesday Conference Sessions and Deep Dive Discussions | Thursday Best-In-Class Tours
Networking Events | Event Schedule | Tour of Sacramento’s Community Compost Network

Be sure to refresh your browser to ensure viewing all latest updates.

Deep Dive Discussions
Tuesday, March 31, 2020

Updated 3.4

11:00 AM—12:15 PM

Deep Dive 01 (Redwood Room)

How To Select Your Anaerobic Digestion Technology — Wet, Plug Flow, Dry?

Kyle Muffels, GHD

The variance in organics collection systems at the municipal level dictates the main AD technology selection and preprocessing steps required to render organics suitable for digestion. This Deep Dive Discussion will utilize a case-study approach to discuss technology selection (preprocessing solutions; wet versus plug flow systems versus dry batch AD) and expected outcomes from a performance and cost standpoint. Project examples will include California, Quebec and Ontario. The similarities and differences between these projects in terms of capital and operating cost, biogas production and utilization, handling and quality of final digestate, footprint, odor control, and the relationship between the technology and the composition of the incoming organic material streams, will help contextualize and explain the various approaches to organics management. The monetization strategy (e.g., maximizing production of biogas or compost) and site characteristics (e.g., space constraint, water availability) further influence technology selection.

Deep Dive 02 (Terrace Room)

Program Tracking Tools: Outreach, Code Enforcement, Monitoring Food Waste Program Implementation

Kendra Bruno, City of Napa (CA), Emily Coven, Recyclist, and Al Mowbray, Metro (Portland, OR)  

The City of Napa (CA) has been successful in increasing organics recycling program onboarding and ideal participation with source separation training and compliance managed and monitored through the Recyclist Outreach Tracking tool. Since its implementation, the City of Napa has been able to ensure a higher rate of compliance and continued success of organics recycling program. Using the Recyclist tool, the city can track, create alerts and reminders, complete real time audits with photos, create designation of status (6-week on boarding, management, retraining), inventory tracking, and currently creating a Code Enforcement Module for Compliance cases.            

Metro’s FRED (Food waste Requirement Evaluation Dashboard) is a visualization tool for monitoring implementation of Metro’s mandatory food scrap separation policy across 5 jurisdictions.  The tool will be updated quarterly for the 5-year implementation period.  The data behind the tool provides estimates on costs to haulers for hauling the food waste, an estimate for total food waste capture, and the flexibility to estimate flow to other processing facilities, should they add the capacity to receive food waste.  The system also serves as an indicator of the effectiveness of technical assistance through outcome-based measures such as participation in prevention, donation and composting programs as well as recovery rates. Jurisdictions can continue business as usual in their desired management software by adding a single, 1-click report-generation that is compiled by Metro into a regional snapshot of all food-producing businesses.

1:45 PM—3:30 PM

Deep Dive 03 (Redwood Room)

Navigating State Air Permitting And Compliance Requirements For Composting

Patrick Sullivan, SCS Engineers

With growth in diverting organics to composting, air pollution control agencies will begin to regulate these operations as sources of emissions, primarily for their contribution of volatile organic compounds (VOCs), an ozone precursor. This Deep Dive Discussion summarizes the types and magnitude of emissions from composting operations that could lead to a requirement to obtain air permits. Examples of air permitting requirements for composting operations will be detailed, enumerating the necessary steps to obtain an air permit. Included would be emission estimates, identification of and compliance with applicable rules and regulations, control technology evaluations (e.g., best available control technology (BACT)), emission offset determinations, etc. A brief summary of jurisdictions that have enacted air regulations for composting operations will be covered in the overview. A recommended strategy for maneuvering through these permitting requirements will be proposed in the Deep Dive. Several case studies of air permitting examples for different types of composting facilities, including open windrow, aerated static piles, and enclosed composting facilities, will be discussed, along with relevant permit conditions and source testing requirements would also be detailed.

Deep Dive 04 (Terrace Room)

What's Edible?

Laura Moreno, PhD, UC Berkeley

Edibility is a complex concept to address in the quantification of food waste, In the absence of a standard definition, it is important to consider how edibility might influence our estimates of wasted food, including how we track progress over time and what we identify as hot spots for intervention. For example, efforts to reduce discards from broccoli stalks (e.g. retailers using stalks in slaw or soups) would not result in reduced amounts of estimated food waste if inedible parts are excluded from the definition of food waste.

A transparent and clear description of how edibility is categorized is necessary to ensure comparison between definitions and studies. Given the potential magnitude of difference, it is important that the categorization of edibility be consistent. This Deep Dive reviews several approaches to quantification, and how to apply the methodology to your food waste management programs.

4:15 PM—6:00 PM

Deep Dive 05 (Redwood Room)

Practical Infrastructure Solutions For SB 1383 Organic Waste Diversion

Cindy Liles, Clements Environmental Corp.

Talk around SB 1383 includes the need for 50 to 100 new organics processing facilities. But has forward progress been made on new infrastructure? With stringent air regulations, expensive water controls, and lengthy CEQA timelines, what are the most practical solutions for your organic waste management needs? Engage in this Deep Dive to discuss your organic waste stream, what infrastructure voids are not being filled, and potential pathways to identify your needs. With guidance from Cindy Liles, the SME, participants will get a quick glimpse into what the reality of their ideas would look like — e.g., is it the right system for their feedstock, does it fit within their sustainability plan, is the cost within a reasonable budget? We will also shine a light on problems the industry is facing (e.g., long permit review times, expensive fees, public resistance), and highlight where success has been achieved (e.g., expansion projects, maximum controls, community engagement).

Deep Dive 06 (Terrace Room)

Food Cycle In Cities, On Farmlands

Jessica Toth, Solana Center for Environmental Innovation

In 2017, Solana Center established Food Cycle, a proof-of-concept food scrap drop-off program. Staff and volunteers process food scrap into compost. Due to increasing interest, on-site processing capacity has grown from 0.5 to 14.25 cy. Currently, 150 regular participants drop off food scrap and collect finished compost for their own uses, resulting in potential 24 MTCO2e/year avoided.

Having successfully demonstrated the feasibility and accessibility of mid-scale composting to serve a local community, Solana Center plans to take our program to the next level. Food Cycle on Farmlands will accept food scrap from food-generating businesses to be composted at agricultural properties. In addition to avoided GHG emissions through diversion, this program will capitalize on the ability of land-applied compost to sequester carbon. Food Cycle on Farmlands will remain a non-commercial endeavor intended to support awareness and education around the value of food scrap and importance of landfill diversion. Our broader vision is to eventually replicate the successful elements of Food Cycle on Farmlands on San Diego County’s 5,700 small farms. Estimated carbon sequestration opportunity on all 242,000 acres of land in agricultural production in the County is over 11M MTCO2e.

In this Deep Dive, let's discuss the obstacles to implementing closed-loop community-wide systems. Come to share experiences, your ideas, and lessons-learned.