The URL can be used to link to this page

Home My WebLink AboutCCUA Biosolids Evaluation Board PPT 2026.08.04 pV CO(\iHf BIOSOLIDS BUSINESS CASE EVALUATION August 4, 2026 T> _ r tom=�,®-_ _ ';-_ �7 1 ;` - J .I..r __ AGENDA _ __ , . r- jt- lr T ;7 _ f, l6. ":- _: - 'F ' -.11.-...:1.,.1 - ...._.=,.,",7,,,,,:--1,'i':,4 0- 77'''' '':..".... .",_''V',.:'I','.".l'.....)k.....-...z `..7.,_,,_:_,.._.... ,_.__-_____-___:,..,..__.-_..-_,_.2_..._.:.__ L-z--..--,4-L----.-.-..--.7,"i_-,,-,,7 Current Biosolids Practice - • C Load Projections and Future Capacity e i^�s 1 Alternative Analysis Results and Recommendations Questions _._ r 00111114 .........,At ( lj TYAUTHO ` V �Uy, f".Vy :, , CURRENT BIOSOLIDS PRACTICE AND FUTURE PROJECTIONS si CO UN,` CURRENT & PROJECTED BIOSOLIDS TREATMENT L �� /`v UsingBCR Neutralizer for 20+ ears. �� y ,<, o � T CCUA currently operates BCR systems at 5 WRFs. rauTN Current Contract with BCR extended through Dec. 2026. Single Source designation extends to Dec. 2029. Total annual processing capacity need is projected to be about 31 ,000 WT/year for 2050. WR Average Day Biosolids (DT/Yr) 11Biosolids (DT/Yr) iosoli B ds Flow, mgd @ 0.8 DT/MGD @ 1.2 DT/MGD ( fir) Fleming Island 2.91 851 1,276 3,870 - 5,810 Keystone 0.09 27 — 41 _ 130 - 190 Miller Street 1.90 554 830 2,520 - 3,780 Peter's Creek 1.39 407 610 1,850 - 2,780 Ridauaht 1.84 537 805 _ 2,440 - 3,660 Spencer's 3.10 906 1,359 4,120 - 6,180 Mid-Clay 3.39 989 1,483 4,500 - 6,750 SE Clay 0.12 34 51 160 - 240 NW Clay 0.02 5 7 30 - 40 Misc. 0.73 213 319 970 - 1,460 Green Cove 0 0 0 0 - 0 Springs* Shadowlawn" 0 0 0 0 - 0 Total A15.49 ill 4,522 6,783 i 20,560 — 30,840 Figure 1: 2050 1-1%,,,,, anu Diosolids Projections 4C Caraia ARDURRA N7` BIOSOLI DS REGULATORY DRIVERS raw Regulatory Framework 4ALMA_ Regulations drive treatment methods, disposal options, and costs j CIA Federal — CWA, 40 CFR Part 503 State - F.A.C. Ch. 62-640 `QP pEPAQr-mmq. Local factors — No CC Ordinance Identified 04t .. o Florida classifications: Class 8, Class A, Class AA (EQ equivalent) i Z n Proposed Regulations % ' O+M LPi FNTAc ic Senate Bill 290: 2026 Florida Farm Bill --- Restricting land application to Class AA materials only * Class 8 biosolids ;�.\�k; A n0141110 To Senate Bill 1294: Biosolids Management Amend Florida's biosolids management statute (Section 403.0855, F.S.) Regulate land application and marketing of Class AA biosolids fertilizer and compost products Prohibit application above the agronomic rate Establish limits based on crop or soil nutrient recommendations to prevent over-application /\ orca;'oiio` ARDURRA 0,Nsi COUN?), 0 Oil G�'!i Y AUTN�, `�4 � ALTERNATIVES ANALYSIS - , , ___. \ : . , „ ALTERNATIVES EVALUATED .:, . . , .pt / -- . ,.,.,,„ - . - _ / . . . . . " Biochemical Reactor (BCR) - Current Practice /` Composting ,,_ Solar Drying and Pasteurization I IA .• ...-.....000.1"item" !IiiI4111"1:31-'' IllijrAll I I 1. ----..64 11-.w* . . , . . ... - 0},...,,, . _ . . . 7U CCca;-iiia'.9 ARDURRA C0UN�` 0114PMI BCR — ADVANTAGES -144 U \-__ ‘( - Gam, • ,�� !` Class A/EQ Biosolids Production for Beneficial Reuse - The process produces Class A/EQ biosolids suitable for beneficial reuse, including land application and soil amendment uses. /'` Reduced Footprint Requirements - Compared to conventional biosolids treatment technologies, the process generally requires less physical space. /` Odor Reduction - The treatment process significantly reduces odors associated with biosolids handling and storage. '` Initial CAPEX Advantage - CCUA has already invested in the BCR infrastructure, and the facilities are currently in place Ccca;-iiia . ARDURRA V--orcou, cr_t_ ?)- BCR — DISADVANTAGES %/A ,.�� High Chemical Consumption and Cost Exposure - Requires continuous use of multiple chemicals, increasing operating costs and exposure to price and supply changes. Corrosion of Equipment and Infrastructure - Harsh chemicals and acidic conditions accelerate wear on piping, tanks, and equipment, raising maintenance needs. Operator Safety Risks from Hazardous Chemicals - Handling strong chemicals creates risks (burns, inhalation, reactions), requiring strict safety controls. No Reduction in Biosolids Mass or Volume - Stabilizes biosolids but does not significantly reduce overall mass or volume. Continued reliance on hauling and disposal leads to long-term cost exposure. Ongoing Hauling and Disposal Costs with No Path to Reduction -Inability to Address Emerging Contaminants - Does not address PFAS or microplastics, which may affect future disposal options. Disposal Liability and Contingency Management - If standards are not met, removal is required, with added hauling costs and potential fees. CAPEX Disadvantage - Capital investment will be required in the future for additional trains. mcca;-,IIo. ARDURRA 9çQf1COMPOSTING 'Imo Biosolids are blended with woody amendment ( 1 .2. 1 ) and moisture, then treated in 'iTrquTNo' enclosed, aerated vessels for rapid pathogen reduction (>131 F). !` Material undergoes —17 days of in-vessel treatment followed by —25 days of aerated curing with controlled temperature, airflow, and odor management (biofilters). /" Produces a stable, nutrient-rich soil amendment (Class A/AA) suitable for beneficial reuse. ,odu ; .e,,,,,.4, , iiii f nt$ti/k Io-1Ws*N Boy Na' So:cod Slit Metsd Stack*No 1 tWO RAM _k u+ClassA ,, —i fampr 1 is / \., 4CC2;0i10' ARDURRA ,„, Cou„,, COM POSTI NG roo Advantages: . / I'yAUTNO /\\/ Low Capital Cost- This alternative does not require major equipment and hence has minimal capital cost /` Low Energy Demand- Minimal energy demand for odor control /` Low Consumables Demand- This process requires minimal process water for mixing and leachate is recycled back into the process, eliminating the need for sewer /` Marketable Product- Screened compost is a marketable agricultural product /`\/ Simple Operation - There is no major equipment, hence making it a simple operation Disadvantaye . Large Footprint- Composting requires a large footprint and a large buffer to account for community impacts like odor Volume Increase - The biosolids are mixed with woody amendment in a 1:4 ratio or higher, significantly increasing the volume of end-product. Based on the 2050 estimate, around 50,000 to 55,000 tons/year of product would be produced. Weather Sensitive - The weather significantly affects the temperature and moisture content of the static piles Time Intensive - Process requires a minimum retention time of 17 days with a curing period of 25 days to meet Class AA pathogen reduction Odor Concerns - Since stage two of the process is outdoors, it could lead to untreated odors /\ air-Caraol:0 ARDURRA co UN,` SOLAR DRYING + PASTEURIZATION ouip TyAUTN� Solar drying utilizes suns energy in greenhouse-style structures, and mechanical turning to promote moisture evaporation. After solar drying, biosolids are conveyed to a belt dryer for additional volume reduction. /` Dried product can be pelletized and marketed as fertilizer. Dewatered Cake from County WRFs Dried Product Class AA Pellet OHO Pelletization Hauled for Commercial Sales Receiving Pits _ Greenhouse Belt Dryer Drying Class AA Hauled for Field Application /\ orca;'ciio` ARDURRA SOLAR DRYING + PASTEURIZATION "0.1 Advantages: }/AUTNo /` Low to moderate energy demands: Lower energy demands than BCR technologies. /` Highly marketable end use product: The process produces a stabilized, granular biosolids product with reduced moisture content that can be sold as commercial fertilizer. / ' Low dust-generation: Lower drying temperatures and gentler material handling result in reduced dust generation compared to full thermal mechanical drying systems. Disadvantages: Partially weather-dependent: Solar drying portion of performance is directly influenced by local climate conditions, with reduced effectiveness during periods of low sunlight, high humidity, or frequent rainfall. Large footprint: Larger footprint required in comparison to BCR treatment. Increased Operational Complexity: Operation of pasteurization technology requires the use of trained specialized staff when compared to technologies that utilize solar energy. /\ orca;'oilo ARDURRA 0,0 COulvi, % 4 illi A UTIA° RESULTS AND RECOMMENDATIONS ��,y covN�` SCORING CRITERIA — I G � � Cost — Cost effectiveness for implementation and long-term operation. This includes capital �i expenditures, operations, and maintenance (O&M) costs, and the 25-year net present worth (NP 1. YAu.flk0 Adaptability for Anticipated Future Regulations — Ability of the technology to comply with emerging biosolids regulations, including potential-limits on PFAS, microplastics, and land application nutrient management. '` Operational Complexity — Level of operational difficulty and impact on CCUA staff. Considerations include required operatorliours, sensitivity to weather conditions, system reliability, and the extent of redundancy incorporated. '` Social Impact — Potential for off-site impacts such as odor, noise, and increased traffic. i` Scalability — Ability to expand or modify the system to accommodate future capacity needs. i` Ease of Permitting - Likelihood and feasibility of obtaining necessary permits for construction and operation of the biosolids processing facility. /`\/ Footprint/ Real Estate Requirements — Total land area required, including FDEP Chapter 62-640.700 minimum buffer distances and site constraints. /` End Use and Disposal of Biosolids — Long term sustainability and reliability of biosolids end use or disposal options and ease of transfer of liability for disposal. '` Waste Side Stream Disposal — Risks and challenges associated with managing and disposing of liquid or gas side streams generated by the process. /\ orca;'oiio ARDURRA SCORING MATRIX - - UNWEIGHTED SCORES WEIGHTED SCORES I f.. a, o _ a, o j �'� s ��TY A UTN�� # Criteria cc N ce N U O co 'L U O '� m p m p O N N O N n U a U a S= Total Capital Costs 1 2 3 5% 0.05 0.1 0.15 Total Annual O&M 3 1 2 5% 0.15 0.05 0.1 Costs Total 25-Year Present 3 1 2 25% 0.75 0.25 0.5 Worth Adaptability for future 2 3 1 15% 0.3 0.45 0.15 regulations Operational 3 1 2 5% 0.15 0.05 0.1 Complexity Social Impact 1 3 2 5% 0.05 0.15 0.1 Scalability 3 2 1 10% 0.3 0.2 0.1 Ease of Permitting 2 3 1 5% 0.1 0.15 0.05 Footprint/Real estate 1 3 2 5% 0.05 0.15 0.1 End use and disposal 3 2 1 10% 0.3 0.2 0.1 of biosolids Waste side-stream 3 2 1 10% 0.3 0.2 0.1 disposal TOTAL 25 28 18 100% 2.5 1.95 1.55 U cC.C.affiiit7 ARDURRA COu COSTS -1 Gail/ � �`,`� TYAUTNO Present Total 25-Year # Alternative Capital Annual O&M Worth of Present Wort Cost ($) Cost ($) Annual O&M ($) Costs ($) 1 BCR $53,341 ,000 $8,692,000 $117,501 ,000 $170,842,000 2 Composting $14,300,000 $1 ,000,000 $17,600,000 $31 ,900,000 Solar and Pasteurization - $58,200,000 $1 ,400,000 $26,000,000 $84,100,000 31 ,000 WT/Yr 3 Solar and Pasteurization - $76,700,000 $2,100,000 $38,900,000 $118,600,000 50,000 WT/Yr arCarollo ARDURRA COSTS oim. Ardurra Analysis of Existin• BCR Electric Costs ($): $30,160.00 Ty A UTNO� BCR Chemical Maintenance ($): $3,015,714.35 CCUA Labor ($): $603,888.00 Materials ($: $91,219.06 Total ($): $3,739,981.41 FY25/26 Total WWT Budget: $11,265,099.00 BCR% of WWT Budget: 33.20% Ardurra Analysis of Solar Drying and Pasteurization CCUA Labor Costs ($): $366,080.00 Electric Costs($): $120,057.00 Natural Gas Costs ($): $265,360.00 Transportation Costs ($): $465,000.00 R&R Costs ($): $192,669.00 Total ($): $1,409,166.00 Current BCR Costs ($): ($3,766,667.23) Eliminating BCR Expenses in the budget Alt. Solar Drying and Pasteurization ($): $1,409,166.00 Annual operating and maintenance expenses Alt. Debt Service Solar Drying ($): $2,407,277.62 20-year loan Net of current BCR annual expenses ($): $49,776.39 Net after adding the Alt. Biosolids Solution U arCaregio® ARDURRA REGIONALIZATION OPPORTUNITIES Mario\ /`\, A public-private partnership, presents CCUA with an opportunity to develop a t�TYquTN°� regional biosolids processing facility. / ' Advantages : Potential revenue streams may include host fees based on the volume of biosolids (measured in wet tons) received from other utilities. Recovery fees associated with the sale of pelletized end products. Offset operational costs. Improve the overall financial sustainability of CCUA's biosolids management program. /`\/ Potential partners requiring long-term biosolids management solutions based on existing treatment capacity, projected biosolids generation rates, hauling distance, and expressed interest in a regional biosolids handling and disposal option: Marion County, Ocala, The Villages, Palm Coast, Gainesville GRU, Starke, Baldwin, Ormond Beach, Daytona Beach, Port Orange, Deltona, Mt. Dora, Apopka /\ orca;'oiio ARDURRA \ , cotJA,, OTHER TREATMENT ALTERNATIVES (i\ -iii-. - guiP_'AUTNO /\\/ Advantages : - BIOSOLIOS FEED IN I Smaller footprint THERMAL FLUID RETURN `� ( �} THERMAL FLUID SUPPLY h-.^"_ 1 'I 1,-_ ` , j Continue BCR agreement T /`� uisaavantages . _ _ _ di`� DRY SOLIDS OUT Proprietary intellectual process 11-- G+INUENSATERETURN CONDENSATE SUPPLY High operating temperatures of -500 F Complex process including heat exchangers, condensers and nitrogen generators Complex skid equipment requiring indefinite maintenance contract Ccca;-a io. ARDURRA Ci\- ��( COUNT` m• litYALFOO QUESTIONS?