5-Attachment A - Compost Analysis Summary.pdf
PDF 94 KB Posted
- Solicitation number
- ITB-26-00425
- Issued by
- Hillsborough County, Florida
About this file
This is a Compost Analysis Summary document related to Hillsborough County's Sale and Removal of Finished Compost revenue contract in Florida. The document provides monthly compost quality test results spanning from July 2025 through June 2026, tracking parameters against FDEP 62-640 F.A.C. standards. The analysis monitors arsenic and cadmium concentrations in the finished compost on a dry weight basis, with arsenic levels ranging from 1.86 to 3.08 mg/kg dw across the twelve-month period, averaging 2.32 mg/kg dw. The data demonstrates compliance with applicable regulatory ceiling concentrations and Class AA standards established by the Florida Department of Environmental Protection.
The compost analysis indicates that the finished product from the Hillsborough County Composting Facility meets established quality benchmarks necessary for beneficial use and resale. Monthly testing results show consistent adherence to regulatory requirements, supporting the marketability and distribution of the finished compost under the five-year revenue contract valued at $1,020,000.00. This quality assurance documentation is essential for contractors bidding on the purchase, removal, and transportation of the finished compost material, as it validates the product's suitability for commercial and beneficial reuse applications.
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Other files
| File | Type | Posted |
|---|---|---|
| 2-Insurance Certificate.doc | DOC document | |
| 7-ITB-26-00425 Sale and Removal of Finished Compost (Revenue Contract).pdf | ||
| 1-Drug Free Workplace Form.doc | DOC document | |
| 4-Direct Deposit Authorization Form 5.15.2025.pdf.pdf | ||
| 3-Substitute W9 Form.pdf.pdf | ||
| 6-ITB-26-00425 Insurance Requirements.pdf |
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Parameter Unit Jul-25 Aug-25 Sep-25 Oct-25 Nov-25 Dec-25 Jan-26 Feb-26 Mar-26 Apr-26 May-26 Jun-26 Min Max Average
FDEP 62-640 F.A.C.
Ceiling Concentration (single Sample)
FDEP 62-640 F.A.C.
Class AA Parameter
Concentration (Monthly Average)
Arsenic mg/kg dw 3.08 2.08 2.66 2.54 2.48 2.33 2.08 2.29 2.28 2.08 1.86 2.1 1.86 3.08 2.32 75 41 Cadmium mg/kg dw <0.34 0.22 0.76 0.54 0.41 0.3 0.32 0.33 0.41 0.38 0.3 0.33 0.22 0.76 0.39 85 39 Copper mg/kg dw 95 68.3 122 109 109 108 115 113 130 110 104 107 68.3 130 108 4300 500 Lead mg/kg dw 7.5 <5 8.2 7 10.7 7.4 8.2 8 7.9 9.5 23.2 8.5 7 23.2 9.6 840 300 Mercury mg/kg dw 0.1 0.13 0.09 0.13 0.15 <0.05 0.13 0.17 <0.05 0.08 0.14 0.07 <0.05 0.17 0.11 57 17 Molybdenum mg/kg dw 4.6 2.4 4 5.1 3.4 4.8 4.4 5 4.5 4.1 3.6 3.8 2.4 5.1 4.1 75 n/a Nickel mg/kg dw 11.3 7 11.7 11.2 9.6 30.2 10.3 9.8 10.7 8.5 7.5 7.6 7 30.2 11.3 420 420 Selenium mg/kg dw <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 100 100 Zinc mg/kg dw 307.3 240.5 347.5 325.4 328.5 267.8 350.4 321.9 342.2 293.7 258.9 273.2 240.5 350.4 304.8 7500 2800 Fecal Coliform MPN/g 576 6 <0.2 4 8 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 576 49.6 n/a 1000 Salmenalla MPN/4g <0.26 <0.26 <0.26 <0.26 <0.26 <0.26 <0.26 <0.26 <0.26 <0.26 <0.26 <0.26 <0.26 <0.26 <0.26 n/a 3 Moisture Concentration % 42.89 47.43 38.18 42.25 35.36 35.33 38.62 32.11 35.26 43.58 30.09 34.06 30.09 47.43 37.93 n/a n/a Total Solids % 57.11 52.57 61.82 57.75 64.64 64.67 61.38 67.89 64.74 56.42 69.91 65.94 52.57 69.91 62.07 n/a n/a Soluble Salts mS/cm 6.9 2.6 4.8 4.2 3.8 7.3 10 7.4 4.5 4.4 5.7 5.4 2.6 10 5.6 n/a n/a pH SU 7 8.3 8.1 8.1 8.2 6.7 6.9 6.7 7.9 8.4 6.9 7.7 6.7 8.4 7.6 n/a n/a Agricultural Index % >10 >10 >10 >10 >10 >10 >10 >10 >10 >10 >10 >10 >10 >10 >10 n/a n/a Nitrogen - Total % 2.5 2.26 2.85 3 2.24 2.74 2.54 3 3.06 2.69 2.52 2.76 2.24 3.06 2.68 n/a n/a Nitrogen - Organic % 1.62 1.28 1.9 2.07 1.37 1.83 1.69 2.02 2.03 1.77 1.69 1.95 1.28 2.07 1.77 n/a n/a Nitrogen - Ammonia % 0.886 0.987 0.945 0.923 0.871 0.903 0.849 0.985 1.024 0.927 0.832 0.813 0.813 1.024 0.912 n/a n/a Nitrogen - Nitrate % <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 n/a n/a Total Phosphorus as P2O5 % 3.65 3.48 1.78 3.97 3.19 3.57 3.24 4.08 3.89 3.33 3.08 3.26 1.78 4.08 3.38 n/a n/a Total Potassium K2O % 0.74 0.59 0.78 0.8 0.67 0.79 0.83 0.77 0.79 0.74 0.6 0.68 0.59 0.83 0.73 n/a n/a C/N Ratio 10.2:1 7.7:1 9.1:1 10.3:1 8.9:1 11.7:1 14.8:1 9.7:1 10.1:1 10.8:1 9.9:1 10:1 7.7:1 14.8:1 10.3:1 n/a n/a < = Below Method Dectection Limit n/a = not applicable EPA = Environmental Protection Agency FDEP = Florida Department of Environmental Protection
Results of Compost Analysis
Sheet1
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