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(Adopted January 10, 2003) 

RULE 1133. COMPOSTING AND RELATED OPERATIONS – 

GENERAL ADMINISTRATIVE REQUIREMENTS 

(a) Purpose 

 This rule sets forth administrative requirements for existing and new chipping and 

grinding activities and composting operations. The purpose of this rule is to 

create an emissions-related informational database on composting and related 

operations through a registration process. 

(b) Applicability 

 This rule applies to owners or operators of chipping and grinding activities and 

composting operations unless otherwise exempt under subdivision (g). 

(c) Definitions 

 For the purposes of this rule, the following definitions shall apply: 

(1) AGRICULTURAL COMPOSTING is composting conducted in 

agricultural settings where the feedstock consists of wastes generated onsite by the production and processing of farm or agricultural products. 

(2) BACKYARD COMPOSTING is composting conducted by a household 

including, but not limited to, single family residences, duplexes, or 

apartment buildings. 

(3) CHIPPING AND GRINDING is any activity that mechanically reduces 

the size of greenwaste, woodwaste, and/or foodwaste. 

(4) COMMUNITY COMPOSTING is composting conducted by a residential 

neighborhood association using feedstock generated within the residential 

neighborhood to produce compost for the neighborhood’s use. 

(5) COMPOST is a product resulting from the controlled biological 

decomposition of organic materials. 

(6) COMPOSTING is a process in which solid organic waste materials are 

decomposed in the presence of oxygen under controlled conditions 

through the action of bacteria and other microorganisms. 

(7) COMPOSTING OPERATIONS are facilities involved in composting 

organic materials including, but not limited to, greenwaste, biosolids, 

manure and foodwaste. 
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(8) FOODWASTE is any food scraps collected from the food service 

industry, grocery stores, or residential food scrap collection. Foodwaste 

also includes foodwaste that is chipped and ground. Foodwaste mixed 

with greenwaste is considered foodwaste. 

(9) GREENWASTE is any organic waste material generated from gardening, 

agriculture, or landscaping activities including, but not limited to, grass 

clippings, leaves, tree and shrub trimmings, and plant remains. 

(10) NURSERY COMPOSTING is composting conducted at a nursery to 

produce compost for on-site use. 

(11) PORTABLE CHIPPING AND GRINDING is chipping and grinding 

utilizing equipment with a manufacturer’s rating of 170 brake horsepower 

or less. 

(12) RECREATIONAL FACILITIES COMPOSTING is composting conducted 

at parks, arboretums and other recreational facilities using feedstock 

generated on-site to produce compost for on-site use. 

(13) WOODWASTE is lumber, and the woody material portion of mixed 

demolition wastes and mixed construction wastes. 

(d) Requirements 

Operators of chipping and grinding activities and composting operations shall 

meet the following requirements: 

(1) No later than July 1, 2003, operators of existing chipping and grinding 

activities and composting operations shall register with the District by 

submitting the complete and applicable information required in 

accordance with subdivision (e) of this rule. 

(2) Prior to start of operation, operators of new chipping and grinding activities 

and composting operations, shall register with the District by submitting 

the complete and applicable information required in accordance with 

subdivision (e) of this rule. 

(3) No later than July 1, 2004, and every year thereafter, operators of chipping 

and grinding activities and composting operations registered with the 

District shall update their registration information by providing any 

changes to the information submitted in accordance with subdivision (e) of 

this rule. 
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(e) Registration Process 

The registration and annual update required pursuant to subdivision (d) of this 

rule shall, at a minimum, include the following information: 

(1) Facility name; 

(2) Facility location address and mailing address; 

(3) Facility legal owner(s), contact person, title, telephone number, and 

mailing address; 

(4) Facility operator (s), contact person, title, telephone number, and mailing 

address; 

(5) Number of employees at the facility; 

(6) Applicable California Integrated Waste Management Board’s permit 

number, identification number, and facility classification; 

(7) Type and amount of materials received and type and amount of products 

produced for the preceding year; 

(8) Facility design capacity (throughput ) in tons per year; 

(9) Facility actual throughput in tons per month for the preceding calendar 

year. For new facilities, projected throughput must be provided; 

(10) Feedstock description; 

(11) Facility process description including, process diagram and a description 

of chipping and grinding operations and composting methods used (if 

applicable); 

(12) Published tipping fee schedule for the preceding calendar year by 

feedstock, and; 

(13) Number of air quality- and odor-related enforcement actions issued in 

writing against the facility by any Local Enforcement Agency and the 

California Integrated Waste Management Board for the preceding 

calendar year. 

(f) Fees 

The operator of any activity or facility subject to registration and annual update 

requirements pursuant to this rule shall be subject to a one-time fee equivalent to 

the plan submittal fee in accordance with Rule 306 at the time of registration. 

(g) Exemptions 

The following types of facilities and operations are exempt from the requirements 

of this rule: 
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(1) Portable chipping and grinding; 

(2) Community composting; 

(3) Agricultural composting; 

(4) Nursery composting; 

(5) Recreational facilities composting; 

(6) Backyard Composting; and 

(7) Woodwaste chipping and grinding facilities.