8-Appendix A.pdf
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- Solicitation number
- RFP-26-00156
- Issued by
- Hillsborough County, Madeira Beach City, Florida
About this file
Appendix A is a technical data file supporting a leachate treatment services contract opportunity for Hillsborough County Board of County Commissioners in Florida. The document provides comprehensive water quality monitoring data for leachate composition at the Southeast County Landfill in Lithia, Florida, collected from January 2020 through May 2025. The leachate treatment system must address a wide range of contaminants including field parameters (conductivity, dissolved oxygen, oxidation-reduction potential, temperature, turbidity, and pH), general parameters (biological oxygen demand, total suspended solids, total Kjeldahl nitrogen, and total phosphorus), heavy metals (arsenic, cadmium, chromium, copper, lead, manganese, mercury, molybdenum, nickel, selenium, silver, and zinc), and other compounds (cyanide, oil and grease, total ammonia, and TCLP compounds). The data demonstrates significant variability in leachate characteristics across multiple sampling events, with some parameters exhibiting concentrations substantially above Maximum Contaminant Levels (MCL) established by Florida Administrative Code standards (Ch. 62-520, 62-302, and 62-777).
The monitoring data indicates that the leachate treatment system must handle highly variable influent conditions, including total dissolved solids ranging from approximately 5,400 to 15,000 mg/l, total ammonia concentrations between 32 and 1,840 mg/l, and biological oxygen demand values from 7.7 to 720 mg/l. Total suspended solids vary from 15 to 720 mg/l, and total Kjeldahl nitrogen concentrations range from 180 to 1,840 mg/l. The project's estimated cost is $26,600,000.00, reflecting the membrane-based treatment system requirements necessary to achieve reliable and cost-effective removal of these contaminants. Questions and requests for interpretation regarding the contract must be submitted no later than 14 calendar days after solicitation issuance in Bonfire, participation in a site visit, or attendance at a pre-bid conference, whichever occurs latest.
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Field Parameters MCL Standard conductivity (umhos/cm) NS 17298 17776 21854 19513 22151 22799 24276 dissolved oxygen (mg/l) NS 3.45 2.64 3.07 4.2 4.5 2.3 0.65
ORP (mV) NS 133 113.8 93.3 136 157.1 151.4 59.1 temperature (°C) NS 18.20 22.90 27.2 23.5 29.70 30.4 32.30 turbidity (NTU) (field) NS No Data No Data No Data No Data No Data No Data No Data pH (field) (6.5 - 8.5) 7.64 7.57 7.54 7.63 7.55 7.63 7.34
General Parameters (mg/l) MCL Standard Biological Oxygen Demand (BOD) NS 120 30 34 55 26 K 2.7 890
Total Suspended Solids (TSS) NS 30 32 44 60 1.4 76 28 Total Kjeldahl Nitrogen (TKN) NS 330 480 430 450 440 330 620
Total Phosphorus (TP) NS 2.3 U 2.3 U 3.1 I 2.3 U 2.3 U 1.1 U 3.8 U Total Dissolved Solids (TDS) NS No Data No Data No Data No Data No Data No Data No Data
Arsenic 0.2 0.0028 U 0.0028 U 0.0049 I 0.08 U 0.008 U 0.008 U 0.0098 I cadmium 0.15 0.00024 U 0.00024 U 0.00024 U 0.01 U 0.001 U 1.1 U 0.001 U chromium 2.6 0.007 0.0082 0.0073 0.05 U 0.0067 I 0.008 U 0.0079 I copper 0.7 0.019 0.012 0.034 0.1 U 0.016 I 0.034 I 0.016 I Cyanide 0.011 0.0065 I 0.01 0.0048 U 0.025 I 0.0048 U 0.029 0.004 U
Lead 0.15 0.0078 U 0.0078 U 0.0078 U 0.03 U 0.003 U 0.003 U 0.003 U Manganese 0.66 0.21 0.24 0.24 0.34 0.23 0.24 0.23
Mercury 0.006 0.00005 U 0.00005 U 0.00005 U 0.00005 U 0.00005 U 0.00005 U 0.00005 U Molybdenum 0.14 0.0011 I 0.0016 I 0.0013 I 0.04 U 0.004 U 0.004 U 0.004 U
Nickel 0.1 0.015 0.021 0.024 0.1 U 0.025 I 0.023 I 0.03 I Oil & Grease 300 3.1 I 1.3 U 4.2 Y 4 Y 3 I 1.3 U 220
Selenium 0.42 0.012 U 0.012 U 0.012 U 0.4 U 0.04 U 0.064 I 0.04 U Silver 0.78 0.0034 U 0.0034 U 0.0034 U 0.08 U 0.008 U 0.008 U 0.008 U Zinc 2 0.017 0.0074 U 0.2 0.5 U 0.05 U 0.11 I 0.05 U
Total Ammonia NS 310 440 450 350 440 220 470 TTO 2.13 0.00667 No Data No Data No Data No Data No Data 0.0079
TCLP Compounds NS 0 No Data No Data No Data No Data No Data 0.05549 NS: Means No MCL Standard MCL Standards Derived from the Primary Drinking Water Standard (Ch. 62-520, F.A.C.), the Secondary Drinking Water Standard (Ch. 62-302, F.A.C.), and the Groundwater Cleanup target Levels (Ch. 62-777, F.A.C.)
MCL=Maximum Contaminant Level NS=No Standard NS(1)=GCTL of 2.8 is no longer suitable toxilogical reference for evaluating the significance of ammonia concentrations in groundwater.
mg/l = Milligrams Per Liter ug/l = Micrograms Per Liter umhos/cm = Micromhos Per Centimeter NTU=Nephelometric Turbidity Units mV = millivolts I = reported value is between the laboratory method detection limit and the laboratory practical quantitation limit.
U = parameter was analyzed but not detected.
J4 = Estimated Result
January 8, 2020 February 5, 2020 May 6, 2020 July 8, 2020March 4, 2020 April 1, 2020 June 9, 2020
Appendix A - Leachate Composition (January 2020 through May 2025)
Field Parameters conductivity (umhos/cm) dissolved oxygen (mg/l)
ORP (mV) temperature (°C) turbidity (NTU) (field) pH (field)
General Parameters (mg/l) Biological Oxygen Demand (BOD)
Total Suspended Solids (TSS) Total Kjeldahl Nitrogen (TKN)
Total Phosphorus (TP) Total Dissolved Solids (TDS)
Arsenic cadmium chromium copper Cyanide
Lead Manganese
Mercury Molybdenum
Nickel Oil & Grease
Selenium Silver Zinc
Total Ammonia
TTO
TCLP Compounds NS: Means No MCL Standard MCL Standards Derived from the Prim MCL=Maximum Contaminant Level NS=No Standard NS(1)=GCTL of 2.8 is no longer suitab mg/l = Milligrams Per Liter ug/l = Micrograms Per Liter umhos/cm = Micromhos Per Centimete NTU=Nephelometric Turbidity Units mV = millivolts I = reported value is between the labor U = parameter was analyzed but not de J4 = Estimated Result
25732 20380 20748 22733 16700 19100 21137
1.47 3.33 1.22 2.23 5.69 3.45 4.67
110.9 39.9 96.9 100.9 67.6 49.7 152.4
33.40 32.50 32.3 30.50 21.8 27.70 28.90
No Data No Data No Data No Data No Data No Data No Data
7.25 7.23 6.87 7.39 7.3 7.34 7.45
71 10 70 34 30 K 34 L 49 35 94 26 46 60 35 28
460 360 370 650 330 530 316
3.8 U 14 0.5 U 1.1 3.8 U 38 U 38 U
No Data No Data No Data No Data 9900 8600 12000
0.008 U 0.024 U 0.008 U 0.008 U 0.008 U 0.008 U 0.008 U
0.001 U 0.003 U 0.001 U 0.001 U 0.001 U 0.001 U 0.001 U
0.0057 I 0.015 U 0.019 I 0.0095 I 0.0091 I 0.0074 I 0.0084 I
0.1 0.055 I 0.16 0.56 0.034 I 0.018 0.73
0.004 U 0.004 U 0.004 U 0.0069 I 0.009 I 0.004 U 0.004 U
0.003 U 0.009 U 0.0083 I 0.0037 I 0.0033 I 0.003 U 0.003 U
0.26 0.33 0.41 J4 0.32 0.36 0.28 0.22
0.000028 U 0.000028 U 0.000084 I 0.0014 0.000039 I 0.000028 U 0.000011 U
0.004 U 0.012 U 0.004 U 0.004 U 0.004 U 0.004 U 0.004 U
0.023 I 0.03 I 0.037 I 0.035 I 0.028 I 0.025 0.032
3.6 I 2.3 I 3.6 I 4.3 U 1.7 IY 2 I 1.3 U
0.04 U 0.12 U 0.04 U 0.04 U 0.04 U 0.04 U 0.04 U
0.008 U 0.024 U 0.008 U 0.01 I 0.008 U 0.008 U 0.008 U
0.05 U 0.15 U 0.4 0.17 I 0.11 I 0.05 U 0.096 I
300 330 180 400 290 330 380
No Data No Data No Data No Data No Data 0.01608 No Data No Data No Data No Data No Data No Data 0.14465 No Data
October 7, 2020 December 10, 2020September 2, 2020 November 4, 2020 January 6, 2021 April 8, 2021August 5, 2020 dissolved oxygen (mg/l)
ORP (mV) temperature (°C) turbidity (NTU) (field) pH (field)
General Parameters (mg/l) Biological Oxygen Demand (BOD)
Total Suspended Solids (TSS) Total Kjeldahl Nitrogen (TKN)
Total Phosphorus (TP) Total Dissolved Solids (TDS)
Arsenic cadmium chromium copper Cyanide
Lead Manganese
Mercury Molybdenum
Nickel Oil & Grease
Selenium Silver Zinc
Total Ammonia
TTO
TCLP Compounds NS: Means No MCL Standard MCL Standards Derived from the Prim MCL=Maximum Contaminant Level NS=No Standard NS(1)=GCTL of 2.8 is no longer suitab mg/l = Milligrams Per Liter ug/l = Micrograms Per Liter umhos/cm = Micromhos Per Centimete NTU=Nephelometric Turbidity Units mV = millivolts I = reported value is between the labor U = parameter was analyzed but not de J4 = Estimated Result
20798 16399 20756 28253 28491 10277 20974
1.64 0.78 3.64 2.64 0.56 2.07 0.96
-90.2 -115.9 83.8 127.1 -33.9 166.7 -100
33.30 32.50 24.40 30.40 30.30 27.00 22.40
No Data No Data No Data No Data No Data No Data No Data
7.22 6.97 7.32 7.41 6.86 7.02 7.29
17 35 51 18 29 7.7 37 720 54 48 72 40 15 108 688 246 318 365 650 215 1840
21 15 U 3.8 U 3.8 U 23 U 11 U 15 U 10000 9350 11800 14000 14000 5400 12000
0.008 U 0.008 U 0.008 U 0.008 U 0.008 U 0.008 U 0.008 U
0.001 U 0.001 U 0.001 U 0.001 U 0.001 U 0.001 U 0.0011 I
0.0064 I 0.005 U 0.0065 I 0.0096 I 0.008 I 0.005 U 0.0011
0.005 U 0.0088 I 0.2 0.08 0.013 0.0058 I 0.2
0.0056 I 0.004 U 0.004 U 0.004 I 0.004 U 0.85 0.008 U
0.003 U 0.003 U 0.003 U 0.003 U 0.003 U 0.003 U 0.0092 I
0.47 0.44 0.26 0.29 0.28 0.34 0.38
0.000047 I 0.000022 I 0.00013 I 0.000011 U 0.000093 I 0.000017 I 0.000021 I
0.0052 I 0.004 U 0.004 U 0.004 U 0.02 U 0.004 U 0.004 I
0.028 0.022 0.025 0.033 0.047 I 0.02 0.046
2.2 I 4 2 I 4 I 4 2.2 I 4.6
0.04 U 0.04 U 0.04 U 0.04 U 0.04 U 0.04 U 0.04 U
0.008 U 0.008 U 0.008 U 0.008 U 0.008 U 0.008 U 0.008 U
0.05 U 0.05 U 0.05 U 0.05 U 0.25 U 0.05 U 0.32
360 300 250 32 464 200 660
0.02208 No Data 0.00909 No Data 0.03274 No Data 0.00031
0.163157 No Data 0.13019 No Data 0.24091 No Data 0.51031
January 12, 2023July 21, 2021 October 6, 2021 January 25, 2022 April 19, 2022 July 6, 2022 October 7, 2022 dissolved oxygen (mg/l)
ORP (mV) temperature (°C) turbidity (NTU) (field) pH (field)
General Parameters (mg/l) Biological Oxygen Demand (BOD)
Total Suspended Solids (TSS) Total Kjeldahl Nitrogen (TKN)
Total Phosphorus (TP) Total Dissolved Solids (TDS)
Arsenic cadmium chromium copper Cyanide
Lead Manganese
Mercury Molybdenum
Nickel Oil & Grease
Selenium Silver Zinc
Total Ammonia
TTO
TCLP Compounds NS: Means No MCL Standard MCL Standards Derived from the Prim MCL=Maximum Contaminant Level NS=No Standard NS(1)=GCTL of 2.8 is no longer suitab mg/l = Milligrams Per Liter ug/l = Micrograms Per Liter umhos/cm = Micromhos Per Centimete NTU=Nephelometric Turbidity Units mV = millivolts I = reported value is between the labor U = parameter was analyzed but not de J4 = Estimated Result
28712 26895 22541 36449 21294
3.87 1.17 3.1 0.48 0.95
103.4 -83.1 84.5 133.8 83.6
29.60 31.30 30.6 29.30 30.10
No Data No Data No Data No Data No Data
7.60 7.14 7.40 7.09 7.32
20 15 13 35 60 44 50 140 33 24
4220 413 462 670 480 38 U 1 U 0.23 15 U 1.2
15000 13000 8700 15000 11000
0.008 U 0.01 0.08 U 0.0081 I 0.011 I
0.001 U 0.001 U 0.001 U 0.001 U 0.0023 U
0.011 0.0069 I 0.0093 I 0.01 I 0.011
0.23 0.26 0.0068 I 0.13 0.0023 U
0.01 0.0048 U 0.004 U 0.011 0.022
0.003 U 0.0052 I 0.003 U 0.0069 I 0.0047 U
0.3 0.52 0.37 0.52 0.24
0.000011 U 0.000011 U 0.000043 I 0.000043 I 0.0002 U
0.004 U 0.004 U 0.004 U 0.004 U 0.013 U
0.047 0.054 0.035 0.046 0.033
3.1 I 3.2 I 9.2 3.4 I 1.2 U
0.04 U 0.04 U 0.04 U 0.04 U 0.011 U
0.008 U 0.008 U 0.008 U 0.08 U 0.0051 U
0.1 0.6 0.057 I 0.17 0.013 I
600 340 390 560 400 No Data 0.02543 No Data 0.00443 27 No Data 0.001 No Data No Data 0.51031
April 6, 2023 July 6, 2023 October 26, 2023 May 6, 2024 May 13, 2025
SELF Outfall 001
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