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April 4, 2003 Version 1 2 Section 17868.1. Sampling Requirements. 3 4 All composting operations that sell or give away greater than 1,000 cubic yards of compost 5 annually, and all facilities shall meet the following requirements: 6 (a) Operators shall verify that compost meets the maximum acceptable metal concentration limits 7 specified in Section 17868.2, and pathogen reduction requirements specified in Section 17868.3. 8 Verification of pathogen reduction requirements shall occur at the point where compost is sold and 9 removed from the site,bagged for sale, given away for beneficial use and removed from the site or 10 otherwise beneficially used. This verification shall be performed by taking and analyzing at least 11 one composite sample of compost, following the requirements of this Section as follows: 12 (1) An operator who composts green material, food material, or mixed solid waste shall take and 13 analyze one composite sample for every 5,000 cubic-yards of compost produced. 14 (2) An operator who composts biosolids shall-meet the sampling schedule described in Table 1 15 below. 16 Table 1 —Frequencies of Compost Sampling for Biosolids Composting Facilities Amount of Biosolids Compost Feedstock metric tons/365 daperiod) Frequency Greater than zero but fewer than 290 Annually Equal to or greater than 290 but fewer than 1,590 Quarterly Equal to or greater than 1,500 but fewer than 15,000 Bimonthly i Equal to or greater than 15,000 + Monthly 17 18 (A) The amount of biosolids compost feedstock shall be calculated in dry weight metric tons. 19 (3) Composite sample analysis for maximum acceptable metal concentrations, specified in 20 Section 17868.2, shall be conducted at a laboratory certified by the California Department of 21 Health Services, pursuant to the Health and Safety Code. 22 (b) A composite sample shall be representative and random, and may be obtained by taking 23 twelve (12) mixed samples as described below. 24 (1) The twelve samples shall be of equal volume. 25 (2) The twelve samples shall be extracted from within the compost pile as follows: 26 (A) Four samples from one-half the width of the pile, each at a different cross-section; 27 (B)Four samples from one-fourth the width of the pile, each at a different cross-section; and, 28 (C) Four samples from one-eighth the width of the pile, each at a different cross-section. 29 (c) The EA may approve alternative methods of sampling for a green material composting 30 operation or facility that ensures the maximum metal concentration requirements of section 31 17868.2 and the pathogen reduction requirements of section 17868.3 are met. 32 33 NOTE: Authority cited: Sections 40502, 43020, and 43021 of the Public Resources Code. 34 Reference: Sections 43020 and 43021 of the Public Resources Code. 35 36 Section 17868.2. Maximum Metal Concentrations. 37 15