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PART I Page 9 Permit No. CO-0044776 B'. MONITORING REQUII2ENIENTS Where, based on a minimum of 5 samples, the permittee demonstrates to the satisfaction of [he Division that the level of TDS in the effluent can be calculated based upon the level of electrical conductivity, the permittee may measure and report TDS in terms of electrical conductivity. 3. Biosolids Parameters a) The permittee shall identify the annual biosolids production rate on a dry weight basis, in the Annual Report (see Part I, Section D.3). b) If biosolids from the treatment facilities aze disposed of at a solid waste disposal site or applied to land for beneficial use*, the following requirements apply. The dischazge of solid waste to land for disposal is regulated by the Colorado Solid Wastes Disposal Sites ar Facilities Act (30.20, Part 1 CRS 1973). The Act requires that either a Certificate of Designation be issued t the appropriate boazd of county commissioners for any disposal site located within an unincorporated portion a county, or that approval be granted by the appropriate governing body of an incorporated portion of a cow. for any disposal site located within that incorporated azea. Biosolids are considered, by definition, [30-20-101(6)] to be a solid waste. -~ Section 30-20-102(6) provides an exemption from the Certificate of Designation requirement for biosolids aze used in a beneficial manner and aze designated as meeting all applicable regulations of the Department. application of biosolids to agricultural or disturbed land as a soil conditioner/fertilizer is subject to the C Biosolids Regulations 64 (SCCR 1002-64). Biosolids disposed of in this manner shall comply with the requirements of these Regulations. c) If land application is practiced the permittee shall monitor biosolids quality as follows. Results of monitoring shall be included in the Annual Biosolids Report (see Part I, Section D.3). (I) Upon the effective date of this permit, all chemical pollutants, pathogens and applicable vector amaction reduction requirements shall be monitored per the following schedule. ANNUAL BIOSOLIDS PRODUCTION tons FRE UENCY less than 319 once er eaz 320 to less than 1,650 once er uarter 1,651 to less than 16,500 once er two months 16 500 and greater monthl (ii) If this facility dots not collect samples on a regular basis because sampling occurs from long-term treattr~=~ piles, compost piles, drying beds, etc. a sampling and analysis plan is to be prepazed and submitted to tb Division and to EPA within 90 days of issuance of this permit. If, when dte permit is issued the pertnittee was not sampling in this manner but a change in process necessitates this form of sampling, then the play must be submitted 30 days before the change occurs. This plan is to detail how representative samples a to be obtained and should include elements presented in Section 2.13 of the latest version of the EPA Region VIII Biosolids Management Handbook. The number of samples collected will be at least as many those that would be collected annually as required from the amount of sludge produced (i.e. six for this facility). Amendment No. 1 Issued .1~.~1~~ ~ R ~'''t"~`~ Effective AUG 0 ~ 1999