Capital Assets
A number of projects reported as construction in progress had no activity for many years. We recommend the City determine whether those projects have been completed and should be transferred to depreciable assets or if the assets should be written off. Note that feasibility studies are required to be expensed as incurred until the City Council approves the related project.
We noted a difference between capital outlay expenditures and additions to capital assets. As part of the yearly closing process, the City should review the transactions in the capital outlay accounts to ensure amounts have been properly recorded as capital assets. If transactions do not meet the criteria for capitalization, they should be transferred to another expenditure account.
It may be useful to reconcile capital outlay expenditures and to update the capital asset detail list throughout the year rather than catching up the full year’s accounting at year-end when preparing for the audit.
Pension and OPEB Plans
We reported differences between the pension plan account balance summary prepared by the City’s accounting consultant and OPEB valuations and the general ledger that are reported on the summary of unadjusted differences. We recommend the City prepare a summary that combines the deferred outflows, liability, deferred inflows and pension/OPEB expense for the City’s three pension plans and two OPEB plans and reconciles to the combined balances reported in each City fund in the future to provide consolidated check figures for balances recorded.
Cash Reconciliation
We recommend the City prepare a combined cash and investments reconciliation with each account in a column and reconciling items in rows that reconciles to total combined governmental activity, businesstype activity and fiduciary fund cash and investments accounts. This would simplify the reconciliation of cash and investments to the balance sheet and footnotes during the audit. Many city clients prepare a similar reconciliation. We were informed last year that the City is waiting until after their accounting system is upgraded before implementing this suggestion.
* * * * *
We would like to take this opportunity to acknowledge the courtesy and assistance extended to us during the course of the audit. This communication is intended solely for the information and use of management, the City Council and others within the organization and is not intended to be, and should not be, used by anyone other than these specified parties.
March 15, 2023
4206
550 Howe Avenue, Suite 210
Sacramento, California 95825
Telephone: (916) 564-8727
FAX: (916) 564-8728
GOVERNANCE LETTER
To the City Council
City of American Canyon, California
We have audited the financial statements of the governmental activities, the business-type activities, each major fund, and the aggregate remaining fund information of the City of American Canyon (the City) for the year ended June 30, 2022. Professional standards require that we provide you with information about our responsibilities under generally accepted auditing standards, as well as certain information related to the planned scope and timing of our audit. We have communicated such information in our letter to you dated September 28, 2019. Professional standards also require that we communicate to you the following information related to our audit.
Our Responsibilities under U.S. Generally Accepted Auditing Standards As stated in our engagement letter dated September 28, 2019, our responsibility, as described by professional standards, is to express opinions about whether the financial statements prepared by management with your oversight are fairly presented, in all material respects, in conformity with U.S. generally accepted accounting principles. Our audit of the financial statements does not relieve you or management of your responsibilities.
Generally accepted accounting principles provide for certain required supplementary information (RSI) to supplement the basic financial statements. Our responsibility with respect to management’s discussion and analysis, budgetary comparison schedules for the General and major special revenue funds, schedules of the proportionate share of the net pension liability, schedules of contributions to the pension plan, schedules of contributions to the other postemployment benefits plan and schedules of funding progress of the other postemployment benefits plan, which are RSI, which supplement the basic financial statements, is to apply certain limited procedures in accordance with generally accepted auditing standards. However, the RSI will not be audited and, because the limited procedures do not provide us with sufficient appropriate evidence to express an opinion or provide any assurance, we will not express an opinion or provide any assurance on the RSI.
We have been engaged to report on the combining and individual fund financial statements which accompany the financial statements but are not RSI. Our responsibility for this supplementary information, as described by professional standards, is to evaluate the presentation of the supplementary information in relation to the financial statements as a whole and to report on whether the supplementary information is fairly stated, in all material respects, in relation to the financial statements as a whole. 4207
To the City Council
We have not been engaged to report on the introductory and statistical sections, which accompany the financial statements but are not RSI. Our responsibility with respect to this other information in documents containing the audited financial statements and auditor’s report does not extend beyond the financial information identified in the report. We have no responsibility for determining whether this other information is properly stated. This other information will not be audited and we will not express an opinion or provide any assurance on it.
Planned Scope, Timing of the Audit, Significant Risks, and Other An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements; therefore, our audit involves judgment about the number of transactions to be examined and the areas to be tested.
Our audit included obtaining an understanding of the entity and its environment, including internal control, sufficient to assess the risks of material misstatement of the financial statements and to design the nature, timing, and extent of further audit procedures. Material misstatements may result from (1) errors, (2) fraudulent financial reporting, (3) misappropriation of assets, or (4) violations of laws or governmental regulations that are attributable to the entity or to acts by management or employees acting on behalf of the entity. We generally communicate our significant findings at the conclusion of the audit. However, some matters could be communicated sooner, particularly if significant difficulties were encountered during the audit where assistance is needed to overcome the difficulties or if the difficulties may lead to a modified opinion. We also communicate any internal control related matters that are required to be communicated under professional standards.
Significant Audit Matters
Qualitative Aspects of Accounting Practices
Management is responsible for the selection and use of appropriate accounting policies. The significant accounting policies used by the City are described in Note A to the financial statements. The City implemented Governmental Accounting Standards Board (GASB) Statement No. 87, Leases. The implementation of GASB Statement No. 87 resulted in the recognition of a lease liability and an intangible right-to-use lease asset. Notes F, G and O to the financial statements describes the impact of GASB Statement No. 87 on the City’s financial statements. We noted no transactions entered into by the City during the year for which there is a lack of authoritative guidance or consensus. All significant transactions have been recognized in the financial statements in the proper period.
Accounting estimates are an integral part of the financial statements prepared by management and are based on management’s knowledge and experience about past and current events and assumptions about future events. Certain accounting estimates are particularly sensitive because of their significance to the financial statements and because of the possibility that future events affecting them may differ significantly from those expected. The most sensitive estimates affecting the City’s financial statements were management’s estimates of the allowance for uncollectible accounts and loans receivable, including accrued interest thereon, qualifying expenses claimed under grants, the depreciable lives used for capital assets, the liability for self-insured workers’ compensation claims, the discount rate used to discount the lease liability, the net pension liability and the net other postemployment benefits liability. Management has determined an allowance for uncollectible accounts and loans receivable is necessary based on estimates of collectability and estimated collateral values. The City has an administrator for the selfinsurance program that develops the estimate of the incurred, but unreported claims liability. The City has actuarial calculations performed on its net pension liability and net other postemployment benefits liability. We evaluated the key factors and assumptions used to develop the estimates in determining that they are reasonable in relation to the financial statements taken as a whole. The City has recorded an 4208
To the City Council
allowance for doubtful accounts on most of its BEGIN program loans and its shared appreciation loans and related accrued interest of $8,248,746 because of the previous decrease in property values and the uncertainty if repayment will be received. This allowance does not affect fund balance because these loans are offset by deferred inflows of resources.
Certain financial statement disclosures are particularly sensitive because of their significance to financial statement users. The most sensitive disclosures affecting the financial statements were:
Net Pension Liability: The disclosure of the net pension liability in Note J to the financial statements discusses the pension liability that is reflected in the Statement of Net Position and related deferred balances as well as the assumptions that were used to determine the amounts and other required disclosures. The required supplementary information schedules also provide historical information on the pension obligation.
Net Other Postemployment Benefits (OPEB) Liability: The disclosure of the net OPEB liability in Note K to the financial statements discusses the liability that is reflected in the Statement of Net Position and related deferred balances as well as the assumptions that were used to determine the amounts and other required disclosures.
The financial statement disclosures are neutral, consistent, and clear.
Difficulties Encountered in Performing the Audit
The completion of the audit was delayed because the City did not finalize the capital asset balances until mid-February 2023. No other difficulties were encountered during the audit.
Corrected and Uncorrected Misstatements
Professional standards require us to accumulate all known and likely misstatements identified during the audit, other than those that are clearly trivial, and communicate them to the appropriate level of management. The following adjustments and closing entries were posted during the audit:
The fair value adjustment on investments was updated
An allowance was placed on capacity fees receivable recorded in a prior year that have not been collected for conservatism
Capital assets balances were updated
Accrued salaries were recorded
Capital assets were trued-up and depreciation expense recorded Entries to true-up pension and other postemployment benefit balances Lease entries were posted
ENGIE balances were reallocated between funds according to the cost sharing percentages Capital outlay expenditures were trued up to capital asset additions Entries were posted for government-wide reporting, such as reallocation of depreciation by activity, elimination of entries for full accrual accounting, true-up of restricted net position, elimination of fund balance commitments and assignments, etc. 4209
To the City Council
Reclassifications were made within the different categories of net position and fund balance The attached schedule also summarizes uncorrected misstatements of the financial statements.
Management has determined that their effects are immaterial, both individually and in the aggregate, to the financial statements taken as a whole.
Disagreements with Management
For purposes of this letter, a disagreement with management is a financial accounting, reporting or auditing matter, whether or not resolved to our satisfaction that could be significant to the financial statements or the auditor’s report. We are pleased to report that no such disagreements arose during the course of our audit.
Management Representations
We have requested certain representations from management that are included in the management representation letter dated March 15, 2023.
Management Consultations with Other Independent Accountants In some cases, management may decide to consult with other accountants about auditing and accounting matters, similar to obtaining a “second opinion” on certain situations. If a consultation involves application of an accounting principle to the City’s financial statements or a determination of the type of auditor’s opinion that may be expressed on those statements, our professional standards require the consulting accountant to check with us to determine that the consultant has all the relevant facts. To our knowledge, there were no such consultations with other accountants.
Other Audit Findings or Issues
We generally discuss a variety of matters, including the application of accounting principles and auditing standards, with management each year prior to retention as the City’s auditors. However, these discussions occurred in the normal course of our professional relationship and our responses were not a condition to our retention.
Other Matters
We applied certain limited procedures to management’s discussion and analysis, budgetary comparison schedules for the General and major special revenue funds, schedules of the proportionate share of the net pension liability, schedules of contributions to the pension plan, schedules of contributions to the other postemployment benefits plan and schedules of funding progress of the other postemployment benefits plan, which are required supplementary information (RSI) that supplements the basic financial statements.
Our procedures consisted of inquiries of management regarding the methods of preparing the information and comparing the information for consistency with management’s responses to our inquiries, the basic financial statements, and other knowledge we obtained during our audit of the basic financial statements.
We did not audit the RSI and do not express an opinion or provide any assurance on the RSI.
We were engaged to report on the combining and individual fund financial statements which accompany the financial statements but are not RSI. With respect to this supplementary information, we made certain inquiries of management and evaluated the form, content, and methods of preparing the information to determine that the information complies with accounting principles generally accepted in the United States of America, the method of preparing it has not changed from the prior period, and the information is appropriate and complete in relation to our audit of the financial statements. We compared and reconciled the supplementary information to the underlying accounting records used to prepare the financial statements or to the financial statements themselves. 4210
To the City Council
We were not engaged to report on the introductory and statistical sections, which accompany the financial statements but are not RSI. Such information has not been subjected to the auditing procedures applied in the audit of the basic financial statements, and accordingly, we do not express an opinion or provide any assurance on it.
* * * *
Restriction on Use
This information is intended solely for the information and use of the City Council and management of the City and is not intended to be, and should not be, used by anyone other than these specified parties.
Very truly yours,
March 15, 2023
4211
Description (Nature)
of Audit Difference
To recognize receivable that was deferred, but received in availability period. $ (41,491) 41,491 $ (41,491) $ Financial Statement Captions - Federal and State Grants Fund $ - 5,825,276 $ 55,669,112 $ (661,487 $ (42,885) ) $ Net Audit Differences as % of F/S Captions 0.00% #DIV/0! 0.07% 6.27% 96.75% To recognize receivable that was deferred, but received in availability period. $ (41,491) 41,491 $ (41,491) $ Variance between calculated pension deferred outflows by the CalPERS GASB 68 tool and amount in GL. $ 44,027 44,027 44,027
Variance between contributions to OPEB trust used for deferred outflows and contributions reported by CERBT trust statements. (176,124) (176,124) (176,124) (132,097 - 41,491 ) (173,588 (173,588 ) )
Financial Statement Captions - Governmental Activities $ 6,512,727 335,059,397 $ 29,556,024 $ 303,593,510 $ 4,838,257 $ Net Audit Differences as % of F/S Captions 0.00% (2.03%) 0.14% (0.06%) (3.59%) Variance between contributions to OPEB trust used for deferred outflows and contributions reported by CERBT trust statements. $ (30,917) (30,917) $ (30,917) $ Financial Statement Captions - Water Fund 5,825,276 $ - $ 55,669,112 $ (661,487 $ (42,885) ) $ Net Audit Differences as % of F/S Captions 0.00% #DIV/0! 0.00% 0.00% 0.00% Variance between contributions to OPEB trust used for deferred outflows and contributions reported by CERBT trust statements. $ (23,052) (23,052) $ (23,052) $ Financial Statement Captions - Wastewater Fund 5,825,276 $ - $ 55,669,112 $ (661,487 $ (42,885) ) $ Net Audit Differences as % of F/S Captions 0.00% #DIV/0! 0.00% 0.00% 0.00% Variance between contributions to OPEB trust used for deferred outflows and contributions reported by CERBT trust statements. $ (53,969) (53,969) $ (53,969) $ To accrue additional fiscal year 2022 North Bay Aqueduct costs $ 15,106 (15,106) $ 15,106 $ Net Unadjusted Audit Differences - This Year (53,969) - (15,106) (38,863) (38,863) Financial Statement Caption Totals - Business-type Activities $ 1,450,168 80,895,876 $ 9,935,716 $ 70,995,646 $ (37,725) $ Net Audit Differences as % of F/S Captions 0.00% (3.72%) (0.15%) (0.05%) 103.02%
CITY OF AMERICAN CANYON
SUMMARY OF UNADJUSTED AUDIT DIFFERENCES
YEAR ENDED JUNE 30, 2022
Financial Statements Effect -
Amount of Overstatement (Understatement) of:
BUSINESS-TYPE ACTIVITIES
GOVERNMENAL ACTIVITIES
Deferred
Outflows of
Resources
STATE AND FEDERAL GRANTS - CITY SPECIAL REVENUE FUND
WATER ENTERPRISE FUND
WASTEWATER ENTERPRISE FUND
Total
Assets
Total
Liabilities
Total Net
Position/Fund
Balance
Total Change in
Net
Position/Fund
4212
550 Howe Avenue, Suite 210
Sacramento, California 95825
Telephone: (916) 564-8727
FAX: (916) 564-8728
INDEPENDENT ACCOUNTANTS’ REPORT ON AGREED-UPON PROCEDURES
APPLIED TO APPROPRIATIONS LIMIT TESTING
To the City Council
City of American Canyon, California
We have performed the procedures enumerated below to the accompanying calculation of the Appropriation Limit of the City of American Canyon (the City) for the year ended June 30, 2022. The City and the League of California Cities (as presented in the publication entitled Agreed-upon Procedures Applied to the Appropriations Limitation Prescribed by Article XIII-B of the California Constitution) have agreed to and acknowledged that the procedures performed are appropriate to meet the intended purpose to assist the City in meeting the requirements of Section 1.5 of Article XIIIB of the California Constitution. The City’s management is responsible for the Appropriations Limit calculation. This report may not be suitable for any other purpose. The procedures performed may not address all the items of interest to a user of this report and may not meet the needs of all users of this report and, as such, users are responsible for determining whether the procedures performed are appropriate for their purposes.
The procedures performed and our findings were as follows:
1. We obtained the City’s calculation of the 2021/2022 appropriations limit and compared the limit and annual adjustment factors included in the calculation to the limit and annual adjustment factors that were adopted by resolution of the City Council.
Finding: No exceptions were noted as a result of our procedures.
2. We compared the methodology used to determine the cost-of-living adjustment component to Article XIIIB which states that the City may annually adjust the component for either the change in California per capita personal income or, the percentage change in the City’s assessed valuation which is attributable to non-residential new construction. We recalculated the factor based on the above information.
Finding: No exceptions were noted as a result of our procedures.
3. We compared the methodology used to determine the population adjustment component to Article XIIIB which states that the City may annually choose to adjust the component for either the change in population in the County in which the City is located, or the change in population within the unincorporated area of the County in which the City is located. We recalculated the factor based on the above information.
Finding: No exceptions ere noted as a result of our procedures. 4213
To the City Council
4. We compared the prior year appropriations limit presented in the accompanying Appropriations Limit Calculation to the prior year appropriations limit adopted by the City Council for the prior year.
Finding: No exceptions were noted as a result of our procedures.
5. We recalculated the 2021/2022 Appropriation Limit by multiplying the product of the two above factors by the 2020/2021 appropriation limit.
Finding: No exceptions were noted as a result of our procedures.
6. We compared the City’s actual revenues to the computed appropriation limit for fiscal year 2021/2022.
Finding: For the 2021/2022 fiscal year, the City’s actual revenues subject to the appropriations limit did not exceed the appropriation limit adopted by resolution of the City Council.
We were engaged by the City to perform this agreed-upon procedures engagement and conducted our engagement in accordance with attestation standards established by the AICPA. We are not engaged to and did not conduct an examination or review engagement, the objective of which would be the expression of an opinion or conclusion, respectively, on appropriations limit calculation. Accordingly, we do not express such an opinion or conclusion. Had we performed additional procedures, other matters might have come to our attention that would have been reported to you. No procedures have been performed with respect to the determination of the appropriations limit for the base year, as defined by Article XIII-B of the California Constitution.
We are required to be independent of the City and to meet our other ethical responsibilities, in accordance with the relevant ethical requirements related to our agreed-upon procedures engagement.
This report is intended solely for the use of the City Council and management of the City and should not be used by those who have not agreed to the procedures and taken responsibility for the sufficiency of the procedures for their purposes. However, this report is a matter of public record and its distribution is not limited.
March 15, 2023
4214
APPENDIX A
CITY OF AMERICAN CANYON
APPROPRIATION LIMIT CALCULATION
Year Ended June 30, 2022
APPROPRIATION LIMIT
ADOPTED BY CITY:
Recorded in Final 2021/2022 Budget 20,796,037 $
APPROPRIATION LIMIT
COMPUTATION PER REVIEW:
2020/2021 Appropriation Limit 19,762,460 $
Cost of living factor:
Change in California per capita income 1.0573
Population Adjustment Factor:
Population change in City of American Canyon 0.9953
Auditor computed limitation 20,796,037
Variance $ 0
4215
550 Howe Avenue, Suite 210
Sacramento, California 95825
Telephone: (916) 564-8727
FAX: (916) 564-8728
INDEPENDENT ACCOUNTANTS’ REPORT ON AGREED-UPON PROCEDURES
APPLIED TO APPROPRIATIONS LIMIT TESTING
To the Fire Protection District Board
City of American Canyon Fire Protection District
City of American Canyon, California
We have performed the procedures enumerated below to the accompanying calculation of the Appropriation Limit of the City of American Canyon Fire Protection District (the District) for the year ended June 30, 2022. The District and the League of California Cities (as presented in the publication entitled Agreed-Upon Procedures applied to the Appropriations Limitation Prescribed by Article XIII-B of the California Constitution) have agreed to and acknowledged that the procedures performed are appropriate to meet the intended purpose to assist the District in meeting the requirements of Section 1.5 of Article XIIIB of the California Constitution. The District’s management is responsible for the Appropriations Limit calculation. This report may not be suitable for any other purpose. The procedures performed may not address all the items of interest to a user of this report and may not meet the needs of all users of this report and, as such, users are responsible for determining whether the procedures performed are appropriate for their purposes.
The procedures performed and our findings were as follows:
1. We obtained the District’s calculation of the 2021/2022 appropriations limit and compared the limit and annual adjustment factors included in the calculation to the limit and annual adjustment factors that were adopted by resolution of the Fire Protection District Board.
Finding: No exceptions were noted as a result of our procedures.
2. We compared the methodology used to determine the cost-of-living adjustment component to Article XIIIB which states that the District may annually adjust the component for either the change in California per capita personal income or, the percentage change in the District’s assessed valuation which is attributable to non-residential new construction. We recalculated the factor based on the above information.
Finding: No exceptions were noted as a result of our procedures.
3. We compared the methodology used to determine the population adjustment component to Article XIIIB which states that the District may annually choose to adjust the component for either the change in population in the County in which the District is located, or the change in population within the unincorporated area of the County in which the District is located. We recalculated the factor based on the above information.
Finding: No exceptions were noted as a result of our procedures. 4216
To the Fire Protection District Board
4. We compared the prior year appropriations limit presented in the accompanying Appropriations Limit Calculation to the prior year appropriations limit adopted by the Fire Protection District Board for the prior year.
Finding: No exceptions were noted as a result of our procedures.
5. We recalculated the 2021/2022 Appropriation Limit by multiplying the product of the two above factors by the 2020/2021 appropriation limit.
Finding: No exceptions were noted as a result of our procedures.
6. We compared the District’s actual revenues to the computed appropriation limit for fiscal year 2021/2022.
Finding: For the 2021/2022 fiscal year, the District’s actual revenues subject to the appropriations limit did not exceed the appropriation limit adopted by resolution of the Fire Protection District Board.
We were engaged by the District to perform this agreed-upon procedures engagement and conducted our engagement in accordance with attestation standards established by the AICPA. We are not engaged to and did not conduct an examination or review engagement, the objective of which would be the expression of an opinion or conclusion, respectively, on Appropriations Limit Calculation. Accordingly, we do not express such an opinion or conclusion. Had we performed additional procedures, other matters might have come to our attention that would have been reported to you. No procedures have been performed with respect to the determination of the Appropriations Limit for the base year, as defined by Article XIII-B of the California Constitution.
We are required to be independent of the District and to meet our other ethical responsibilities, in accordance with the relevant ethical requirements related to our agreed-upon procedures engagement.
This report is intended solely for the use of the Board of Directors and management of the District and should not be used by those who have not agreed to the procedures and taken responsibility for the sufficiency of the procedures for their purposes. However, this report is a matter of public record and its distribution is not limited.
March 15, 2023
4217
APPENDIX A
CITY OF AMERICAN CANYON FIRE PROTECTION DISTRICT
APPROPRIATION LIMIT CALCULATION
Year Ended June 30, 2022
APPROPRIATION LIMIT
ADOPTED:
Recorded in Final 2021/2022 Budget 13,910,774 $
APPROPRIATION LIMIT
COMPUTATION PER REVIEW:
2020/2021 Appropriation Limit 13,219,399 $
Cost of living factor:
Change in California per capita income 1.0573
Population Adjustment Factor:
Population change in City of American Canyon 0.9953
Auditor computed limitation 13,910,774
Variance $ 0
4218
CITY COUNCIL AGENDA
MARCH 21, 2023
STAFF REPORT
MANAGEMENT AND STAFF ORAL REPORTS
ITEM NUMBER: 13.
TITLE
Maintenance and Utilities Department, Sewer/Wastewater Division Update
RECOMMENDATION
Receive a Presenta*on on Maintenance and U*li*es Department, Sewer/Wastewater Division Update
CONTACT
Felix Hernandez, III, Maintenance and Utilities Director Jay Atkinson, Water Reclamation Facility Operations Manager
BACKGROUND & ANALYSIS
The Maintenance and U*li*es Department is responsible for the treatment and distribu*on of drinking water; the collec*ons, reclama*on, and reuse of wastewater; compliance with all environmental regula*ons related to water, wastewater, stormwater, and solid waste; and management of the City's facili*es and fleet. The City operates a Water Treatment Facility, Water Reclama*on Facility (WRF) and Corpora*on Yard. The WRF processes wastewater for either discharge to receiving waters or for recycled water production and distribution.
The City's WRF was the first commissioned in 2002 as one of the first Membrane Bio-Reactor (MBR) Treatment Facilities in the state of California. Its design allows for an average dry weather flow of 2.5 million gallons per day (MGD), and a peak wet weather flow of 5 MGD. Currently, serving approximately 25,000 residents, along with businesses, including large food processors and other industrial discharges. There are four MBR process trains, each consis*ng of an anoxic zone and an aerobic zone. The WRF is both a secondary and ter*ary treatment facility; secondary water is UV disinfected and discharged to the Napa River, while tertiary water is chlorinated for irrigation.
The sewer collec*ons division which is now located at the WRF, maintains 54 miles of underground pipe, 5 pump sta*ons, lateral cleaning and sewer repairs, CCTV or video underground pipe, respond to any and every sanitary sewer overflow (SSO). The crew assists all other divisions as needed.
COUNCIL PRIORITY PROGRAMS AND PROJECTS
Organizational Effectiveness: "Deliver exemplary government services." 4219
FISCAL IMPACT
None
ENVIRONMENTAL REVIEW
15378(b) - The ac*on is not a "Project" subject to the California Environmental Quality Act ("CEQA") because it does not qualify as a "Project" under Public Resources Code Sec*ons 21065 and 21080 and in Section 15378(b) of Title 14 of the California Code of Regulations ATTACHMENTS:
Presentation WRF Collections
4220
March 21, 2023
Maintenance and Utilities Department
Wastewater Treatment/Sewer Collections Update
4221
2 FACILITY OVERVIEW
Solar arrays
Generator
Blue Frog
Screw Press
Headworks
Solar arrays
Overflow basin
1.5MG Recycle
Water tank
Trains
Administration
UV/Chlorine Contact Basin
4222
3 OPERATIONS AND MAINTENANCE STAFF
Ray Nolan Josh
Mark
4223
4 TREATMENT FACILITY
• The City owns and operates two collection systems that convey domestic and industrial wastewater separately to the Facility, which provides advanced secondary treatment of wastewater and has an average dry weather design capacity of 2.5 million gallons per day (MGD) and a peak wet weather capacity of 5.0 MGD. From April 2018 to March 2021, the Facility treated an average daily influent flow of 1.57 MGD.
• The City’s NPDES permit and the Waste Discharge Requirements for Mercury and PCBs from Municipal and Industrial Wastewater Discharges to San Francisco Bay (CA0038849, Order No. R2- 2017-0041), which was adopted by the San Francisco Bay Water Board on November 8, 2017 and became effective on January 1, 2018.
• Membrane-filtered final effluent is disinfected with chlorine to produce recycled water for distribution through the existing recycled water system. Recycled water is regulated under the State Water Resources Control Board’s General Water Reuse Order (WQ 2016-0068-DDW). 4224
5 Rain -14.5”
0 1
2 3
4 5
6 12/26/2212/27/2212/28/2212/29/2212/30/2212/31/22
1/1/231/2/231/3/231/4/231/5/231/6/231/7/231/8/231/9/23
1/10/231/11/231/12/231/13/231/14/231/15/231/16/231/17/231/18/231/19/231/20/231/21/231/22/231/23/231/24/231/25/231/26/231/27/231/28/231/29/231/30/23 STORM EVENT 2022-2023
Total Influent Flow MG Total Effluent Flow MG Rain"
MG
Treated flow - 108 Million Gal
Total Influent Flow – 104 million gal
4225
6 ANNUAL LOOK AT MEMBRANE PERFORMANCE
4226
7 8-12 Years Replaced 2015 8 Years
MEMBRANE CONDITION
4227
• NPDES Permit Renewal Complete (5yr cycle)
• Long history with Regional Board Regulators. No surprises with successful permit renewal • Stress Testing and Local Limits Assessment
• Preliminary Stress Test Data indicates an ability to treat increased organic load • Napa Logistics Pump Station
• Green Island Pump Station Decommissioned
• Napa Logistic Pump Station Commissioned
8 WRF Recent Accomplishments
4228
9 SEWER COLLECTIONS DIVISION
4229
10 SSMP ADOPTED 2021-2022
The State of California requires publicly owned
sanitary sewer systems to develop and implement
a Sewer System Management Plan (SSMP),
including measures to control and mitigate sewer
spills. The City maintains and periodically audits
and updates its SSMP pursuant to the State
requirements.
4230
• Maintain 54 miles of sewer collection pipe, five sewer pump stations, Repair and inspect lateral lines, Sewer line repairs, CCTV inspections, SSO spill response , Support WRF operations through cross training,
11 SEWER COLLECTIONS RESPONSIBILITIES
4231
12 Equipment Advantages
• Lateral launch kit. A smaller 150 ft reel of 3/8 in. Hose with nozzle made for addressing sewer laterals and smaller lines. Our old unit did not have this ability and would require a separate piece of equipment when a lateral blockage occurred.
Ability to operate the suction and
jetter functions at the same time,
needed for cleaning dirty line lines
by sucking out the solids while
cleaning the lines.
Accumulator setting adds a
jackhammer action to the jetter
function which can aid in clearing
tougher blockages.
Fully operational, wireless remote
control. Allows for operation of the
boom, suction and jetter functions
from a distance when it’s safer to do
so. Jetting may get messy and sewer
gasses may accumulate near
operator. It’s dangerous to be near
the suction when in operation and
should never be near it. When you
need to operate the boom when not
near the controls. Having a remote is
ideal in some conditions.
4232
13 The Maintenance and Utilities Department, Sewer Collection Division took delivery of a new Vactor 2100i in August 2022. The upgraded equipment greatly enhances staff efficiency and versatility.
EQUIPMENT USED TO MAINTAIN SYSTEM
• Holds 2,400 gallons in the debris tank
compared to our old unit that held 850
gallons.
• Can pump longer distances than older
unit.
• Holds 1500 gallons of water compared to old unit
which held 800 gallons.
• Up to 80 GPM of flow compared to the old unit that
had 50 GPM Max.
• RDB (Rapid Deployment Boom) speeds up the process
when operating the vacuum suction.
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14 Upgraded Equipment
Upgraded equipment helps
staff provide the best service to
our citizens. Providing health
and human safety as well as
preventing potential property
damage.
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CCTV Camera – CUES flexitrax C550 system
Inspection of underground facilities like sewer
collection and storm water mains are vital for
proper maintenance and repair. Data collected
can be implemented into CIPs as well integrated
with GIS.
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CCTV
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17 MYSTERY SOLVED
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CCTV Inspection video
Clip of a sewer CCTV inspection:
This section is part of CIP SS4.
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20 Pipe Condition
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Questions?
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City Council Committee Report
Submitted
by: * Councilmember Mark Joseph
Council
Meeting
Date:
03/21/2023
Event
Date: 2023-03-15
Event Type Committee Report
Event Title:* Napa Valley Transportation Authority (NVTA) Event Report: Attended the monthly Board meeting. Highlights included approving a design contract to renovate the building--when it was first built, there were unfinished areas. Now we will increase office space, provide showers (for employees taking active transportation methods to work) and legally required wellness room, and expand the bus driver break room. We also received an update on the Vision Zero project, and authorized Requests for Proposals for the latest TFCA funding (for projects that will reduce vehicle air pollution, such as EV Charging Stations, Bike lanes, etc.) Also represented NVTA in Leadership Napa Valley's Government Day. This was a good opportunity to meet future and current leaders.
File/Photo Upload Max file size for all uploads is 10 MB Event
Date:
Event Type Community Event
Event Title:* City-related Events and Activities
Event Report: Attended the Chamber's State of the City event at LaStrada's. This was very well attended and the presentation really highlighted our progress, and included an update from NVTA and the Chamber.
Attended the Farm Bureau's Ag Day at the Town and Country Fairgrounds. A huge crowd of elementary school aged kids. They seemed to have a great time. I got a chance to meet with some Board of Supervisors, including my LNV Class 14 alumni, Chair Gregory!
Phone call with Maureen Trippe with Slow Down Napa. She reached out to learn more about what we're doing on traffic calming. Had a nice conversation discussing various traffic calming strategies.
File/Photo Upload
Ryan Gregory Cleo and Mark 3-2023.jpg 3.39MB
Max file size for all uploads is 10 MB
Event
Date:
Event Type Community Event
Event Title:* Community Events and Activities
Event Report: Kiwanis Crab Feed: this was our first in-person crab feed since the pandemic. We made around $16,000 net, and everyone had a great time. It was a good learning experience for the Club, since it was a new venue (Boys and Girls Club). I attended the monthly board meeting and a de-briefing on the crab feed.
Because of the Crab Feed, I missed the Broadway Project meeting, which I had planned to attend.
Napa Working Families Coalition: I hadn't attended one of these meetings in a while. There was discussion about their recent fund raiser and the status of various projects, including housing elements and infrastructure projects.
They are also working on linking local projects with new Federal funding. We should take advantage of this.
Holi Festival: Despite the inclement weather, there was a good turnout for this event. A lot of newcomers, including Clarence Mamaril and Allie Ikeda. Relocating the event to Comm Park II added a lot of costs to the event.
Napa County Democratic Central Committee (NCDCC): Attended the online monthly meeting. We heard from Tim Frank, who is working on Smart Growth strategies with the Napa Working Families Coalition, and Assembly person Cecilia Aguiar-Curry, who was seeking support for her ACA1 (55% threshold on Affordable Housing and Infrastructure bonds) and AB659 (HPV vaccination requirements). We supported both. 4243
Met with Sherry Tennyson and Napa Valley College staff to plan a Healthy People Healthy Planet event on Earth Day at Wetlands Edge Park.
Met with Brenda Knight and Clarence Mamaril to plan the upcoming Juneteenth event. Brenda will make a presentation to Council on March 7.
AmCan Arts Foundation: Attended the monthly meeting. We covered a lot of topics, from grant proposals to our community mosaic project to upcoming events.
Meet the Leader/Chris Benz: This is a regular online meeting highlighting community leaders and former LNV alumni. This month was Chris Benz, who is a very effective and engaged member of the Napa Valley community-- she has been instrumental in moving our Climate Action agenda locally.
File/Photo Upload Max file size for all uploads is 10 MB 4244
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