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USA EPA Region 8/CDPHE-Water Quality Control Division <br />BIOSOLIDS ANNUAL REPORT <br />r <br />* <br />,? "'rt ?NCt?? G <br />04 o <br />)Ft's ;` •'y `l c, / <br />H? .? I II <br />*3 ti? <br />46 <br />. 1 7a.* <br />SECTION VII - PATHOGEN AND VECTOR ATTRACTION REDUCTION (reporting year 2010 ) <br />(Permit Number (COG650110 <br />1. Pathogen Reduction 2. Pathogen Reduction <br />Class A Class B <br />? Class A -Alternative 1 (± elevated temp for specified time) ? Class B - Alternative 1 (geometric mean of 7 samples) <br />? Class A -Alternative 2 (+ pH adjust for specified time/temp) ? Class B - Alternative 2 (indicate which PSRP) <br />© Class A -Alternative 3 (+ virus and helminth criteria) ? (a) aerobic digestion <br />? Class A -Alternative 4 (+ other virus and helminth criteria) ? .(b) air drying <br />Class A -Alternative 5 (indicate which PFRP) ? (c) anaerobic digestion <br />® (a) composting ? (d) composting <br />? (b) heat drying ? (e) lime staibilization (pH at 25 C or equivalent) <br />? (c) heat treatment ? Class B - Alternative 3 (attach PSRP equivalent <br /> documentation) <br />? (d) thennophilic aerobic digestion <br />? (e) beta ray irradiation <br />? M gamma ray irradiation <br />? (g) pasteurization <br />? Class A -Alternative 5 (attach PFRP <br />equivalent documentation) <br />3. Vector Attraction Reduction <br />Method Used: <br />? Option 1 (minimum. 38 percent reduction in volatile solids) <br />? Option 2 ( Anaerobic process, with bench-scale demonstration) <br />? Option 3 (Aerobic process, with bench-scale demonstration) <br />? option 4 (Speck Oxygen Uptake Rate (SOUR), aerobically digested) <br />?Q option 5 (Aerobic Process plus raised temperature) <br />? Option 6 (Raise pH to 12 and retain at 11.5) <br />? Option 7 (75% solids with no unstabilized solids) <br />? Option 8 (90% solids with unstabilized solids) <br />? Option 9 (Injection below land surface with significant sail coverage) <br />? Option 10 (Covering active sewage sludge unit daily) <br />"Attach all Pathogen Reduction and Vector Attraction Reduction documentation to demonstrate compliance at the <br />end of the packet <br />If you have any questions regarding the preparation of this form, contact the CDPHE/EPA biosolids program staff person. <br />7 (1212008)