HomeMy WebLinkAboutEDB CCUA AWS 2022 Update Final EXECUTIVE SUMMARY
AGENDA ITEM:
Alternative Water Supply 2022 Annual Update
Date: June 16, 2022
BACKGROUND:
Clay County Utility Authority(CCUA)Rate Resolution No. 2015-2016-01, Section 4. (7) authorized
and implemented an Alternative Water Supply (AWS) Surcharge and Connection Charge. The
resolution requires staff to report on the adequacy of the AWS Surcharge and Connection Charge to
the Board of Supervisors by July 1St each year. Any recommended changes to the AWS Surcharge or
Connection Charge are placed in CCUA's annual budget and presented at the annual public rate
hearing.
2021-2022 Progress:
Staff,along with the engaged consulting teams, continue to advance the CCUA's AWS initiative. Our
efforts this fiscal year centered on testing of the Stormwater Harvesting Pilot Project and completing
cthe design of the Potable Reclaimed Water Pilot Project. Both efforts support CCUA's focus on long-
term water supply sustainability. Our team also advanced the development of the Integrated Water
CT
o Resource Plan (IWRP). The IWRP will provide a long range view at water demands related to
c population growth with water supply options including AWS.
3
ce Stormwater Harvesting Pilot Project:
CCUA staff along with a supporting consultant, Jacobs Engineering, Inc. (Jacobs) began operating
and testing the stormwater harvesting system located along State Road (SR) 23 north of Oakleaf
Plantation Parkway. Our team and Jacobs began operating and testing the system in August 2021.
In general, staff see the system as providing a reasonable volume of water for augmentation of the
reclaimed water when rainfall is elevated. In evaluation of the data received, staff determined during
dry periods the water levels in the storm water system were depressed enough that staff was not able
to operate the system. Staff was seeking an AWS source that provided sufficient storage such that we
would be able to match the demand for reclaimed water with an alternative supply source. The data
collected to date suggests that delay between customer demand and surficial water storage is not
meaningful to match the supply with demand.We provided a graph below of the water supply(MGD
—Million Gallons Per Day)provided by the system by month.
I
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CCUA Stormwater Harvesting Pilot Project
Daily Water Volume Collected(MGD) by Rainfall
02550 Wet Period August-September _ 3.50
Total Rainfall=10.93" Wet Period in March-April
Avg.Daily Rainfall=0.18" Dry Period October-February Total Rainfall=10.12"
0. Total Rainfall=12.34" Avg.Daily Rainfall=0.24"
Avg.Daily Rainfall �
F- • i I.
3.00
0.200 Dry Period-April-May
Total Rainfall=2.01"
o
Avg.Daily Rainfall=0.05" 250
2 0.150
•
2.00 0
O
t
S
150
- D.100
• 1.00
0.050 • _ •
I • •
+- 0.50
.I • „ •
•:: III IiI
0.000 �1 'I - _ .. •:: 0.00
August-21 September-21 Ocmber-21 No ember-21 Decerrlber-21 la uary.22 February-22 Mai-22 Apri-22 May-22
■Volume Pumped Randal(fiches)
Figure 1-Storm water Harvesting Daily Water Volume by Rainfall
to
Staff continues to evaluate the water quality data being collected. To date, the team has not detected
fecal coliform in the samples. Iron and total suspended solids (TSS) values have begun to elevate in
produced water samples above levels recommended for augmentation. The team is evaluating causes
for this. This effect would need to be mitigated for the water to be used as augmentation water. We
provided a table below of the water quality results to date.
Table 1- Water Quality Sampling Results Summary
BODS TSS Fecal Coliform
Pump Monitoring Pump Monitoring Pump Monitoring
Month of Station Well Station Well Station Well
Sampling PD-1 TOW-1 PD-1 TOW-1 PD-1 TOW-1
August-21 22 1.1 7.8 NS LD NS
September-21 LD NS 6.2 NS NS LD
October-21 LD NS 5 NS NS LD
November-21 LD NS 33 NS NS LD
December-21 LD NS 17 NS NS LD
January-22 LD LD 78 LD LD LD
February-22 LD LD 57 LD LD LD
March-22 4.7 LD LD 32 LD LD
May-22 5.1 LD 2.6 LD LD LD
*LD=Parameter was not detected in the sample.
**NS=Parameter not sampled during the period.
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Staff continues to monitor the results of the water quantity and quality testing of the stormwater
harvesting project. Our team will process the developing data for consideration of how CCUA may
potentially use a version of this type of system in the future. Because of the modest volumes available
and water quality effects we are seeing, staff is planning first implementations to be on Water
Reclamation Facility Sites,where any such water quality affect can be treated by the existing facility
before being sent into the reclaimed system
Potable Reclaimed Water Pilot Project:
CCUA engaged the consulting firm Carollo Engineers, Inc. (Carollo) to develop a framework to
evaluate treatment solutions, provide guidance on technical options available, and complete the
design of the project. The Carollo team completed the design of the Potable Reclaimed Water Pilot
Project in May of this year, and it is going to bid in June. Bid opening will be in July.
Integrated Water Resource Planning, Rate Study, and Regulatory Planning Efforts:
In addition to the technical efforts described above, CCUA's IWRP and rate study efforts are
advancing. We anticipate using information gained from both the stormwater harvesting and potable
reclaimed water pilot project to further guide decision making in the later years of the IWRP. We
anticipate receiving the draft IWRP in a matter of days. Staff and the CDM Smith team will present
the recommendations in the IWRP to the Board of Supervisors once we complete the quality control
reviews on the final report.
The CCUA and CDM Smith teams continue to work on the rate study. We are in phase 2 of that
effort. We anticipate completing the rate study either late summer or early fall. CCUA and CDM
Smith will present the findings and recommendations of the rate study to the Board of Supervisors
once complete.
Beyond the IWRP and rate study efforts, we continue to monitor the development of rules by the
Florida Department of Environmental Protection (FDEP) regulating potable reclaimed water. Our
efforts have been in conjunction with other utilities involved with the Florida Water Environment
Association Utility Council and the Florida Section of the American Water Works Association. We
remain optimistic that rules will develop for CCUA's selected treatment approach using a carbon-
based system.
Alternative Water Supply Expenditures and Revenues:
2021/2022 Expenditures (as of 4/30/2022)
Stormwater Harvesting Pilot Project(Testing) $26,890.03
Lower Aquifer Feasibility Study(ASR) $25,593.03
Potable Reclaimed Water Pilot Project $312,436.90
Total $364,919.96
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2021/2022 Revenue (as of 4/30/2022)
Surcharge Fund(Existing Customers) $388,143.12
Connection Charge Fund(New Customers) $740,342.47
Interest Income $8.59
Total $1,128,494.18
Total Expenditures and Revenues (as of 4/30/2022)
Beginning AWS Cash Balance 10/01/2021 $2,237,105.59
Total Expenditures $364,919.96
Total Revenues $1,128,494.18
Ending AWS Cash Balance 4/30/2022 $3,000,679.81
Changes in AWS Surcharge and Connection Charges:
In 2018, CCUA identified the need to systematically increase the AWS Surcharge and Connection
Charge over a 25-year period to generate sufficient revenue to fund the AWS Initiative as the program
matures from feasibility evaluations and pilot projects to full scale capital project implementations in
years to come. CCUA does not have any new information available that would fundamentally or
materially change the path set into motion. Staff recommends following the AWS Initiative funding
plan presented in 2018. The recommendation results in the AWS Surcharge increasing from$1.12 to
$1.15 and the AWS Connection Charge increasing from $365.74 to $376.71.
Our strategic planning efforts are ongoing. The formal rate study will evaluate CCUA's existing rate
structure,planned operating and capital expenditures,financing plans,etc.The study will also provide
a basis for any future changes to the AWS Surcharge and Connection Charge.
RECOMMENDATION:
Staff respectfully recommends continuing with a 3% increase in both the AWS Surcharge and
Connection Charge.
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