1133.1-1 ( Adopted January 10, 2003 ) (Amended July 8, 2011)

RULE 1133.1 CHIPPING AND GRINDING ACTIVITIES

(a) Purpose The purpose of this rule is to prevent inadvertent decomposition occurring during chipping and grinding activities , including stockpile operations

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(b) Applicability This rule applies to operators of chipping and grin ding activities to produce
materials other than active or finished compost , unless otherwise exempted under subdivision (f) of this rule. The requirements of Rule 403 – Fugitive Dust, also apply to these activities.

(c) Definitions For the purposes of this rule, the following defini tions shall apply: (1) ACTIVE COMPOST is material that is in the process o f being rapidly decomposed and is biologically unstable. Active compost is generating temperatures of at least 122 degrees Fahrenheit dur ing decomposition. Active compost includes, but is not limited to, pat hogen-reduced mulch. (1)(2) AGRICULTURAL CHIPPING AND GRINDING is any chipping and grinding activity conducted at an agricultural site where organic waste material is generated on-site by the production and /or processing of farm products, and the chipped and ground organic waste material is used onsite. (23) CALENDAR DAYS refer to any days of the year, e xcluding official federal and state holidays. ( 33 ) CHIPPING AND GRINDING is any activity that mechan ically reduces the size of greenwaste, woodwaste, and/or foodwaste

. ( 44 ) COMPOSTING is a process in which solid organic wa ste materials are decomposed in the presence of oxygen under controll ed conditions through the action of bacteria and other microorgan isms. (5) COMPOST OVERS are the oversized woody materials that do not decompose in a typical composting cycle and are scr eened out of finished product at the end of composting. Compost overs ha ve been through theRule 1133.1 (cont.) (Amended July 8, 2011)

1133.1 - 2 pathogen reduction process outlined in Title 14, Se ction 17868.3 of the California Code of Regulations. (6) CURBSIDE GREENWASTE is greenwaste that is collected from receptacles designated for residential household gr eenwaste. Curbside greenwaste also includes screened curbside greenwas te containing only grass clippings, leaves, and/or twigs that is not c onsidered non-curbside greenwaste as defined in paragraph (c)( 1113 ). (7) FINISHED COMPOST is a humus-like material and/or co mpost overs that result from the controlled biological decompos ition of organic waste materials and is biologically stable. (8) FOODWASTE is any food scraps collected from the foo d service industry, grocery stores, or residential food scrap collection. Foodwaste
also includes foodwaste food scraps that is are chipped and ground. Foodwaste mixed with greenwaste is considered foodw aste. (9) GREENWASTE is any organic waste material generated from gardening, agriculture, or landscaping activities including, b ut not limited to, grass clippings, leaves, tree and shrub trimmings, and pl ant remains. It includes curbside, non-curbside, and mixed greenwaste. (10) INADVERTENT DECOMPOSITION is decomposition of green waste and/or foodwaste associated with stockpiling greenw aste and/or foodwaste for an extended period of time, and is not consider ed part of normal chipping and grinding operations. (11) LANDCLEARING is an activity where trees and plants grown at the site are cut, then chipped or ground and removed from th e site to clear the site. (12) MIXED GREENWASTE is curbside greenwaste that is mix ed with noncurbside greenwaste. (13) NON-CURBSIDE GREENWASTE is any greenwaste that is n ot collected from receptacles designated for residential househo ld greenwaste. Curbside greenwaste or mixed greenwaste that is sc reened and contains only large woody materials (larger than 3 inches in any dimension) such as tree trimmings and branches, is also considered to be non-curbside greenwaste. (14) PALM CHIPPING AND GRINDING is any activity that mec hanically reduces the size of palm trees waste.Rule 1133.1 (cont.) (Amended July 8, 2011)

1133.1 - 3 (15) PORTABLE CHIPPING AND GRINDING is chipping and grin ding utilizing equipment with a manufacturer's rating of 170 brake horsepower
or less. (16) RAINY DAY is any day with at least 0.05 inches of r ain reported by the National Weather Service or a cooperative weather r eporting station for the site closest to where the chipping and grinding activity occurs. (17) STOCKPILE is a supply of raw material tipped and st ored prior to be ing
utilized on-site or removed from the site. Raw mat erials before and after chipping and grinding are also included. (18) WET WEATHER CONDITIONS are weather conditions follo wing a rainy day not to exceed 10 days. (18)(19) WOODWASTE is lumber, and the woody material portion of
mixed demolition wastes and mixed construction wast es. Woodwaste also includes large wood materials of curbside greenwast e or mixed greenwaste that is screened or unscreened, such as tree trimmings, branches, tree trunks, stumps, and limbs exceeding 2 inches in any
dimension.

(d) Requirements Effective July 1, 2003, the The operator of a chipping and grinding activity shall comply with the following requirements : (1) Remove foodwaste from the site or use foodwaste for on-site composting within 2 calendar days of receiptFoodwaste shall no t be taken at the facility, unless otherwise allowed by the Local Enforcement Agency to
handle foodwaste

. (2) Chip or grind
, or use and utilize on-site
, or remove curbside , non-curbside,
or mixed greenwaste from the site within 3 calendar days 48 hours of receipt
, excluding observance of official federal and state holidays, or up to seven days maximum, with approval from the Local Enforcement Agency

. (3) Chip or grind or remove non-curbside greenwaste fro m the site within 14 calendar days of receipt. (4) Chip or grind, or use on-site, or remove mixed gree nwaste from the site within 7 calendar days of receipt. (5)(3) Remove chipped or ground curbside greenwaste from t he site or use chipped or ground curbside greenwaste on-site withi n 3 calendar days ofRule 1133.1 (cont.) (Amended July 8, 2011)

1133.1 - 4 being chipped or groundMaintain all the operational records for the prior five years of operation, with the most recent two y ears retained at the facility, which shall be immediately available upon request by the Executive Officer. The remaining three years of re cords shall be made
available to the Executive Officer within one week of request

. (6)(4) Maintain the following records, as applicable, on-s ite for two years: (A) A copy of the facility’s AQMD registration and annu al updates submitted in compliance with Rule 1133; and, (B) Records of date, type, and amount of greenwaste and/or foodwaste received; and, (C) Records of date, type, amount of greenwaste and/or foodwaste removed from the site, and location where they are transferred to .; (D) Records of dates of rainy days and wet weather cond itions and description of specific conditions that limited nor mal operations .; (E) Records of temperature or moisture content measurements .; and (F) Records of dates and amount of curbside greenwaste chipped and ground. (7)(5) The time requirements specified in paragraphs (d)(1), (d)(2)
, (d)(3), (d)(4), and (d)(5) may be extended by the number of rainy days and we t weather conditions that impede normal chipping and grinding operations provided that records are maintained in accordance with subp aragraph (d)( 64 )(D).

(e) Moisture Content Measurement Moisture content will be determined by collecting at least 10 samples of chipped and ground greenwaste from various locations of the pile at a depth of at least 12 inches below pile surface. The samples shall then be mixed thoroughly and analyzed for moisture content by ASTM method D4442 (December 2007) , ASTM
method D4444 (May 2008) or ASTM method E871-82 (December 2006)

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(f) Exemptions (1) Chipping and grinding activities of greenwaste deri ved from the site and
used utilized on-site shall be exempt from the requirements of pa ragraphs (d)(2), (d)(3), and (d)(4) , (d)(5), and (d)(6), provided less than 1,000 cubi c yards of materials are either sold or given away

. (2) Portable chipping and grinding, agricultural chippi ng and grinding, land clearing chipping and grinding, woodwaste chipping and grinding, andRule 1133.1 (cont.) (Amended July 8, 2011)

1133.1 - 5 palm chipping and grinding activities shall be exem pt from the requirements of paragraphs (d)(2), (d)(3), and (d)(4) , (d)(5), and (d)(6)

. (3) Chipped and ground curbside greenwaste shall be exe mpt from the requirements of paragraph (d)( 52 ) provided that the moisture content is less than 30%, measured in accordance with subdivis ion (e) and the temperature or moisture content measurements are ma intained on-site in accordance with subparagraph (d)( 64 )(E). (4) A biomass power generation facility or a facility p rocessing material as a biomass fuel for a biomass power generation facilit y shall be exempt from the requirements of paragraph (d)(2) provided that the material temperature is maintained at below 122 degrees Fahr enheit or the moisture content is less than 30%, measured in accordance wi th subdivision (e) and the temperature or moisture content measurements ar e maintained on-site in accordance with subparagraph (d)(4)(E). This ex emption shall not apply to material processed for purposes other than biomass fuel. (5) The operator of a landfill or biomass power generat ion facility shall be exempt from the requirements of paragraph (d)(4), p rovided that the operator does not perform chipping and grinding of greenwaste on-site.