Agenda packet — Santa Paula City Council, April 3, 2024 (part 3 of 4)

12. Depth to groundwater within the shallow aquifer at the site ranges from approximately 15 to 49 feet below ground surface. Groundwater gradients generally appear to parallel the ground surface, gently sloping downward to the southwest.

During wet years, groundwater may rise to within 10 to 11 feet below ground surface in the area along the Santa Clara River.

13. On August 23, 2018, the Regional Water Board approved the City’s modified groundwater monitoring network dated May 1, 2018 to expand the groundwater monitoring network by including agricultural water supply wells. Subsequently, on April 22, 2019, the Regional Water Board approved the Groundwater Chloride Investigation and Well Production Workplan dated December 2018, which proposed installing one additional off-site groundwater monitoring well, MW-9.

The City owns and currently samples nine (9) groundwater monitoring wells, including MW-1, MW-2a, MW-3, MW-4, MW-5, MW-6, MW-7a, MW-8, and MW-9 (shown on Figure 5).

COMPLIANCE HISTORY

14. Based on data collected from July 2010 to June 2017, the City had the following number of exceedances recorded in the effluent and groundwater at the SPWRF, which are identified in Table 2.

Table 2. Number of Exceedances Recorded in Effluent and Groundwater Pollutants Effluent Groundwater
Chloride 84 174
Di(2-ethyl)phthalate 1
Dioxin 1
Total nitrogen 1
Nitrate plus nitrite 1
Sulfate 1
Chromium 5
Aluminum 10
Nickel 1
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6 Pollutants Effluent Groundwater
Boron 1
Multiple effluent and groundwater limitations were exceeded during the period between the 2nd quarter of 2010 and the 3rd quarter of 2011. Beginning with the 4 th quarter of 2011, the City had met all effluent limitations except for chloride. As previously noted, the SPWRF was not designed to remove chloride. The monthly effluent chloride concentration ranged from 125 to 166 mg/L and continuously exceeded the effluent chloride monthly average of 110 mg/L. Table 3 summarizes the annual average chloride concentrations in the SPWRF effluent.

Table 3. Annual Average Chloride Concentrations[1] (mg/L) in SPWRF Effluent Period Concentration
2010 156
2011 153
2012 149
2013 155
2014 145
2015 134
2016 137
2017 131
2018 121
2019 120
2020 118.88
2021 112
Range[2] 135.99 ± 15.61
Table Notes:
[1] All data collected from grab samples.
[2] Data range is based on one standard deviation.

15. Table 4 summarizes the groundwater annual average chloride concentration before and after the SPWRF began discharging via the percolation pond. The annual average chloride groundwater concentration was 108 mg/L at the downgradient water supply Well AW03 prior to initiation of discharge at the percolation pond in 2010. After the SPWRF began discharging to the percolation pond, the annual average chloride groundwater concentration increased to 135 mg/L at Well AW03. 549
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7 Monitoring data from the upgradient groundwater monitoring Well MW-3 indicates an annual average chloride groundwater concentration of 100 mg/L. This information suggests that the background groundwater chloride concentration was around 100 mg/L. Groundwater chloride concentrations at the downgradient groundwater monitoring Well MW-5 have been recorded between 135 and 155 mg/L, with an average of 142 mg/L. This data closely aligns with the SPWRF’s effluent chloride concentration of approximately 136 mg/L (Table 3). The groundwater and effluent data indicate that the chloride discharges from the SPWRF have impacted, and continue to impact, the receiving groundwater quality in the vicinity of the SPWRF.

Table 4. Annual Average Chloride Concentration[1] in Groundwater (mg/L) Prior to Discharge from SPWRF
Period Downgradient
MW-5
[2]
Downgradient
03N21W21G03S[3]
Upgradient
MW-3
[4]
2003 No data 113 No data
2004 No data 111 No data
2005 115 117 92
2006 114 112 88
2007 108 110 85
2008 87 100 78
2009 74 92 96
Range[5] 99.6 ± 16.3 107.9 ± 8.6 87.8 ± 6.1
After Discharge from SPWRF
2010 (Jul – Dec) 145 138 93
2011 145 146 112
2012 153 135 87
2013 155 136 103
2014 135 129 115
2015 136 129 108
2016 135 134 103
2017 121 131 105
2018 128.2 126.6 123.6
2019 128.8 129.4 163.1
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8 2020 129.5 127.4 126.3
2021 130.2 129.8 114.3
Range[5] 136.8 ± 10.5 132.6 ± 5.5 112.8 ± 19.5
Table Notes:
[1] All data collected from grab samples.
[2] Data were averaged from samples collected at the City-owned groundwater monitoring Well MW-5 with screen intervals of 42 to 62 feet, located approximately 50 feet downgradient from Percolation Pond 3.
[3] Water supply Well AW03 is owned and operated by a private entity. This well is located approximately 300 feet southwest of Well MW-5. The screen intervals of Well AW03 are from 80 to 120 below surface grade. Water produced at this well is used for agricultural irrigation only.
[4] Data were averaged from samples collected at the City-owned groundwater monitoring Well MW-3 with screen intervals of 25 to 45 feet, located approximately 1,800 feet upgradient from Percolation Pond 1.
[5] Data range is based on one standard deviation.

16. The Regional Board issued three Notices of Violation (NOVs) to the City, dated November 3, 2011, December 30, 2014, and March 20, 2017, for exceedances of the chloride effluent and groundwater limitations in Order No. R4-2007-0028. These NOVs required the City to implement corrective and preventative actions to bring the City’s discharge to full compliance with the chloride effluent limitation and receiving water requirements specified in Order No. R4-2007-0028.

PLAN FOR CHLORIDE COMPLIANCE

17. The City’s efforts to reduce the chloride concentration in the influent to the SPWRF are summarized below:

A. The City identified that the influent to the SPWRF contains brine with elevated chloride concentration from Self-Regenerating Water Softeners (SRWS).

There are approximately 1,250 residential SRWS used in the City.

B. On September 5, 2006, the City established Ordinance No. 1160 prohibiting the installation or replacement of residential SRWS.

C. On June 22, 2015, the City adopted Resolution No. 6918 approving a SRWS Buyback and Incentive Program. This program offers a financial incentive to residents to voluntarily remove SRWS. A Kick-Off SRWS Buyback event was held on September 19, 2015. The removal of SRWS under this program began in October 2015. Three hundred (300) of the approximately 1,250 SRWS have been removed from October 2015 through February 2022. Decreasing chloride concentrations in the effluent have been observed, but they still cannot meet the chloride discharge limitation set forth in the WDRs. 551
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9 18. To address the City’s chloride exceedances in the effluent and groundwater, the Regional Board required the City to submit a Chloride Reduction Workplan. Board staff also met with the City on several occasions to discuss the City’s chloride exceedances. A summary of these events are as follows:

A. On December 19, 2013 and May 11, 2015, the Regional Board met with the City to discuss its Chloride Reduction Workplan. The City’s Chloride Reduction Workplan includes the following tasks:
i. Prohibit SRWS installations or replacements;
ii. Implement a SRWS Buyback Program;
iii. Implement a Recycled Water Program to reduce effluent discharged to the three percolation ponds; and
iv. Implement Supplemental Strategies, if needed, including advanced treatment (e.g. reverse osmosis) and disposal of brine.

B. On January 28, 2016, Regional Board staff discussed with the City the necessary actions to reduce the chloride concentration in the effluent, which included the SRWS Buyback Program. The City also proposed to explore application of recycled water at locations other than identified groundwater hot spots and to conduct groundwater impact investigation and remediation activities. The City was notified that detailed schedules and milestones were required for all actions.

C. On March 8, 2016 and September 14, 2016, the City met with Regional Board staff to provide an update of its SRWS Buyback Program efforts. The City noted that five City employees were deployed to conduct door-to-door visits to encourage participation in the SRWS Buyback Program among 7,500 dwellings within the City.

D. On October 31, 2016, the City met with Regional Board staff to provide an update on the following topics:
i. Status of implementing the chloride compliance strategy and potential for reduction of effluent discharged to the three percolation ponds via the City’s Recycled Water Program;
ii. Assimilative capacities for chloride at different groundwater locations beneath the City based on the Salt and Nutrient Management Plan for the Lower Santa Clara River Basin; and
iii. Groundwater hot spots (i.e., chloride-impaired areas with no assimilative capacity for recycled water applications) in the City.
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10 19. On July 9, 2015, the Regional Board adopted Resolution No. R15-007, an amendment to the Basin Plan that incorporated stakeholder-developed groundwater quality management plan for salts and nutrients in the Lower Santa Clara River groundwater basins. Groundwater quality management measures were developed by stakeholders as part of the Salt and Nutrient Management Plan (SNMP) for the Lower Santa Clara River Basins in Ventura County. Such plans are a requirement of the State Water Resources Control Board’s (State Water Board) Recycled Water Policy and are intended to maintain high quality waters and to protect the beneficial uses of groundwater while promoting recycled water use throughout the state. The SNMP utilized a groundwater quality model that characterized the water quality in the Santa Paula Basin and examined the degree of impairment to water quality in the Basin. The model shows there is available assimilative capacity for salts and nutrients, including chloride, in most areas of the Santa Paula Basin to allow for recycled water projects consistent with the Recycled Water Policy. As described below, the City is planning to recycle effluent that is currently discharged to the percolation pond.

20. The City developed and utilized a simple spreadsheet mixing model, the Groundwater Chloride Transportation Model (Chloride Model), to analyze the effect of future effluent discharges on groundwater over time at various distances from the percolation pond. The City’s modelling assumed some degradation of groundwater with respect to chloride within a limited range of mixing zone radius below and adjacent to the SPWRF, measured from the boundaries of the percolation pond.

This distance is the maximum allowable distance where SPWRF effluent disposed to the percolation pond can mix with groundwater and result in receiving water chloride concentrations of 110 mg/L or less in order to provide protection to groundwater beneficial uses at the first encountered water supply wells which are at 150 feet away from the percolation ponds. Groundwater within the mixing zone will exceed the chloride GQO of 110 mg/L. Mass-volume balance calculations along with Darcy’s Law are used to account for travel in porous media. The Chloride Model simulates instantaneous and complete mixing of ambient groundwater with effluent seepage reaching the water table from the percolation pond using SPWRF data for flow and chloride effluent concentrations. It was conservatively assumed that any effluent discharge to the percolation pond would infiltrate into the underlying aquifer and not be diverted for other uses. Groundwater parameters within the spreadsheet model were selected based on recent monitoring reports in order to be representative of average conditions within the vicinity of the SPWRF. The Chloride Model assumes an initial volume of groundwater underlying the ponds possessing background chloride concentrations of 136 mg/L. The volume of the existing groundwater body is calculated as the product of the radius of interest (150-1200 feet), an assumed saturated thickness of potentially impacted groundwater (50 feet), and the porosity of the underlying sediments (assumed to be 0.2) based on the low end of published literature values for a sand and gravel mixture. Based on the regional groundwater quality data documented in the SNMP, regional groundwater inflow is assumed to have a chloride concentration of 91 mg/L. 553
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11 On December 14, 2016, Regional Board staff met with the City to discuss the results of the Chloride Model, which evaluated compliance with the groundwater quality objectives beneath and adjacent to the three percolation ponds, for various discharge scenarios. Based on Regional Board staff’s comments, the City implemented additional discharge scenarios in the Chloride Model, which was discussed in meetings held on February 8, 2017, February 17, 2017, July 24, 2017, and August 7, 2017.

21. The Chloride Model simulated chloride concentrations in the receiving groundwater resulting from chloride mass loading reduction in the three percolation ponds. The Model predicted GQOs being achieved at 150 feet away from the percolation pond when the total mass of chloride in the effluent is significantly reduced. The initial mass of chloride is calculated based on the average chloride effluent concentration of 135 mg/L and the discharge rate of 2.2 MGD [95 percentile of monthly average effluent flows, resulting from data recorded between October 2015 (beginning of the SRWS Buyback Program) and June 2017], which results in 2,479 pounds total mass of chloride discharged per day. The reduction of chloride mass discharged to the percolation pond can be achieved by improving the effluent chloride concentration (e.g., source control or treatment), or diverting a significant amount of flow for recycled water uses, or a combination of both in order to protect water supply Wells AW01, AW02, and, AW03, approximately 150, 150, and 300 feet, respectively, away from percolation ponds. Water produced from these wells is primarily for agricultural irrigation use.

To achieve the chloride GQO of 110 mg/L in groundwater at least 150 feet away from the percolation pond, the City provided various effluent chloride concentration and allowable flow combinations (Table 5). Based on the hydrology and hydrogeologic condition at the SPWRF percolation ponds area, the higher the concentration of chloride in the effluent, the less volume and mass can be discharged to percolation ponds to comply with the chloride GQO in the Basin Plan.

For example, if the chloride concentration in the effluent is 135 mg/L, only 0.07 MGD, which is equivalent to 79 pounds of chloride per day, could be discharged to the percolation pond to achieve the chloride GQO of 110 mg/L at 150 feet away from the percolation pond. If the chloride concentration in the effluent is reduced to 120 mg/L, then more flow (0.2 MGD) can be discharged to the percolation pond and achieve the chloride GQO 150 feet away from the percolation pond.

Table 5. Groundwater Chloride Transportation Model – Continuous Discharge Chloride Effluent
Concentration
(mg/L)
Flow to
Percolation Ponds
(MGD) (% of 2.2
MGD)
Daily Allowable
Effluent Mass
Load to
Groundwater
(lbs)
Chloride
Groundwater
Concentration at
150 feet
(mg/L)
135 0.07 (3.2%) 79 110
130 0.1 (4.5%) 108 110
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12 Chloride Effluent
Concentration
(mg/L)
Flow to
Percolation Ponds
(MGD) (% of 2.2
MGD)
Daily Allowable
Effluent Mass
Load to
Groundwater
(lbs)
Chloride
Groundwater
Concentration at
150 feet
(mg/L)
125 0.13 (5.9%) 135 110
120 0.2 (9.1%) 200 110
115 0.4 (18.2%) 384 110

22. To achieve compliance with the chloride GQO in this Order and to conserve potable water, the City plans to reduce the volume of effluent, and thus a reduction of the chloride mass discharged to the percolation pond by providing recycled water for various local uses. The Regional Board has evaluated the planned recycle projects and has determined that they will be consistent with the State Water Board’s Recycled Water Policy and will still preserve available assimilative capacity within the Santa Paula Basin consistent with the SNMP. The mass-based effluent limitation for chloride in this Order reflects the City’s chosen compliance option. The groundwater limitations are based on the GQOs in the Basin Plan.

23. On December 22, 2015, the City submitted the Recycled Water Program Technical Report and Notice of Intent with the Title 22 Engineering Report to the State Water Board’s Division of Drinking Water (DDW) for approval. DDW conditionally approved the Title 22 Engineering Report on August 19, 2016. On June 14, 2017, the Regional Board enrolled the City’s recycled water program under separate Water Reclamation Requirements for Recycled Water Use, Order WQ 2016-0068-DDW, issued by the State Water Board on June 7, 2016.

24. In the City’s report, Chloride Load Reduction Milestones, submitted to the Regional Board on March 14, 2017, the City included the construction of RO treatment at the SPWRF as an option (under Supplemental Strategies), if needed, in order to comply with the chloride groundwater quality objective (GQO) of 110 mg/L. The City will continue its source control efforts to remove SRWSs and will first focus on recycling most of its effluent in order to bring the groundwater back into compliance with GQOs. Progress with these efforts was assessed at Year 2020 and determination was made to pursue advanced treatment to meet the chloride GQO at Year 2027.

On April 15, 2020, the City notified the Regional Water Board of its modified approach to install an advanced wastewater treatment system with RO at SPWRF in lieu of the originally proposed recycled water project to meet the effluent limitations in this Order.

25. Due to the following reasons, the City cannot immediately comply with the chloride effluent and groundwater limitations prescribed in this Order: (1) elevated chloride concentrations in the influent, (2) the wastewater treatment process not currently designed to remove chloride out of the waste stream, and (3) time needed to 555
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13 construct the advanced wastewater treatment system with RO. In addition, the current progress of the City’s SRWS Buyback Program does not reliably ensure that the SPWRF will comply with the chloride effluent and groundwater limitations.

Therefore, the Regional Board has determined that issuance of an accompanying CDO is appropriate and necessary to put the City on the path towards compliance with the effluent and groundwater limitations for chloride set forth in this Order. The CDO requires the City to comply with interim chloride effluent and groundwater limitations and implement actions pursuant to a prescribed time schedule.

Groundwater within the 150-foot mixing zone will exceed the chloride GQO of 110 mg/L for the duration of the CDO schedule. Based on the available data, there are no water supply wells within the 150-foot mixing zone. The City can arrange for alternative water supplies for any well owners in the mixing zone, if any are discovered. At the end of the CDO schedule, the mixing zone is no longer allowed, and compliance with chloride limitations of 110 mg/L at monitoring wells adjacent and downgradient to the boundaries of the percolation ponds is required. global warming and climate change

26. The observed century-scale rise in the average temperature of the Earth's surface, oceans, and atmosphere, commonly recognized as the Global Warming, has resulted in extreme climate change, such as the extreme drought and extremely heavy rainfall. In Southern California, the predicted impacts of climate change are numerous. Annual average temperatures are expected to increase, coupled with a higher frequency of extreme heat days. A likely consequence of this warmer climate will be more severe drought periods, leading to an increase in the amount and intensity of fires and a longer fire season. In addition, precipitation patterns are likely to be modified. A decrease in snowfall, combined with warmer temperatures, will induce a decrease in the amount and duration of snowpack, an essential source of freshwater to the region. The increasing occurrence of extreme precipitation events will amplify the risk of flooding, which recently happened in Southern California.

These impacts will affect water quality in multiple ways, including changes in stream flow, aquatic habitats, surface water temperature, pollutant levels, sedimentation, algal growth, and salinity levels and acidification in coastal areas. For permitted facilities such as Publically Owned Treatment Works (POTWs), specific impacts could include, but are not limited to, an increase in the concentration of pollutants entering the facility, an increase in the temperature of effluents and receiving waters, an increase in storm water inflow and infiltration, increase in flooding/inundation of facilities, sewer overflows, power outages, pump maintenance issues, and onsite or nearby hillside destabilization.
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14 Executive Order B-30-15, issued on April 29, 2015, recognizing the challenges posed by climate change, directed state agencies to take climate change into account in their planning decisions, guided by the following principles: Priority should be given to actions that both build climate preparedness and reduce greenhouse gas emissions; where possible, flexible and adaptive approaches should be taken to prepare for uncertain climate impacts; actions should protect the state's most vulnerable populations; and natural infrastructure solutions should be prioritized.

On February 7, 2019, the City submitted a Climate Change Plan. The Climate Change Plan indicated the SPWRF is outside of the 100-year floodplain of the Santa Clara River. This Order requires the City to periodically review and submit a revised Climate Change Plan when conditions at the facility change that may impact water quality. In addition, this Order contains provisions to require planning and actions to address climate-related impacts that can cause or contribute to violations of this Order and/or degradation of waters of the state.

27. The SPWRF was designed to include protection from a 100-year storm event in the Santa Clara River. The SPWRF buildings and percolation ponds are located behind a dike that has an elevation above the elevation anticipated as the result of a 100- year storm event. The design documents and potential flood flow assessment is contained in files in the City’s Building & Safety Department. The elevation of the dike at the SPWRF is 23 feet higher than the Santa Clara River located at approximately 1,300 feet southeast. This elevation separation provides additional protection from a possible flood overflow from the Santa Clara River caused by the climate change. It should also be noted that the SPWRF is located outside of the Santa Clara River floodway defined by the Federal Emergency Management Agency and the Ventura County Watershed Protection District. Lastly, the SPWRF is equipped with a backup generator that is capable of operating the SPWRF through power outages and other emergencies.

Climate change may also increase drought and related impacts such as reduced potable water supply and/or changing water supplies, which may be of less quality.

APPLICABLE LAWS, PLANS, POLICIES, AND REGULATIONS

28. This Order serves as WDRs pursuant to Division 7, Chapter 4, Article 4 of the California Water Code (commencing with section 13260). WDRs have been established because discharges from the SPWRF have the potential to affect the quality of the waters of the State, to impact the beneficial uses of those waters, and/or to cause a nuisance. The Regional Board developed the requirements of this Order based on information submitted as part of the application, through monitoring and reporting programs, and other available information.

29. Water Quality Control Plan for the Los Angeles Region: Basin Plan for the Coastal Watersheds of Los Angeles and Ventura Counties (Basin Plan) - On June 13, 1994, the Regional Board adopted a comprehensive revision to the Basin Plan. The Basin 557
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15 Plan: (i) designates beneficial uses for surface and groundwater, (ii) establishes narrative and numeric water quality objectives that must be attained or maintained to protect the designated beneficial uses, and (iii) sets forth implementation programs to achieve those objectives for all waters addressed through the Basin Plan. The Basin Plan also incorporates State Water Board Resolution No. 68-16 (see finding below for detail). In addition, the Basin Plan incorporates applicable State and Regional Board plans and policies and other pertinent water quality policies and regulations. The Basin Plan has been amended occasionally since 1994, including recent administrative updates. The requirements in this Order implement the Basin Plan.

30. Beneficial Uses - The SPWRF overlies the Santa Clara-Santa Paula Groundwater Basin (DWR Basin No. 4-4). The Basin Plan identifies beneficial uses for regional waters, including those based on State Water Board Resolution No. 88-63 (“Sources of Drinking Water Policy”), which established state policy that all surface and ground waters of the State, with certain exceptions, are considered suitable or potentially suitable for municipal or domestic water supply. Beneficial uses applicable to the receiving groundwater are as follows:

Table 6. Basin Plan Beneficial Uses of Groundwater
Receiving Water Beneficial Use(s)
Santa Clara-Santa Paula Groundwater
(DWR Basin No. 4-4)
Existing:

Municipal and domestic supply (MUN),
industrial service supply (IND), industrial
process supply (PROC), and agricultural
supply (AGR)

31. Title 22, California Code of Regulations (CCR) - To protect sources of drinking water, the Basin Plan (Chapter 3) incorporates the primary and secondary maximum contaminant levels (MCLs) for inorganic, organic, and radioactive contaminants in drinking water as water quality objectives. These MCLs are codified in CCR, Title 22, Division 4. This incorporation by reference is prospective including future changes to the incorporated provisions as the changes take effect. The primary MCLs (see Attachments A-1 to A-6) are applicable water quality objectives for a receiving water to protect beneficial uses when that receiving water is designated as municipal and domestic supply. The Basin Plan also specifies that “Ground waters shall not contain taste or odor-producing substances in concentrations that cause nuisance or adversely affect beneficial uses.” Therefore, the secondary MCLs, which are limits based on aesthetic, organoleptic standards, are applicable water quality objectives for a receiving water to protect beneficial uses when that receiving water is designated as municipal and domestic supply. These water quality objectives are implemented in this Order to protect the designated beneficial uses.

32. Domestic Water Quality – In compliance with California Water Code section 106.3, it is the policy of the State of California that every human being has the right to safe, clean, affordable, and accessible water adequate for human consumption, cooking, 558
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16 and sanitary purposes. This Order promotes that policy by requiring discharges to meet MCLs implemented by the Basin Plan that are designed to protect human health and ensure that water is safe for domestic use.

33. Impaired Water Bodies on Clean Water Act Section 303(d) List/Total Maximum Daily Loads (TMDLs) – The Santa Clara River is listed on the Clean Water Act Section 303(d) List as impaired by ammonia in Reach 3 and by nitrate plus nitrite in Reach

7. To address this impairment, the Regional Board established the Santa Clara River Nitrogen Compounds TMDL on August 7, 2003 by Regional Board Resolution No. 2003-011. The State Water Board approved the TMDL on November 19, 2003 (Resolution No. 2003-0073) and OAL approved it on February 27, 2004. The TMDL became effective upon approval of the U.S. Environmental Protection Agency on March 18, 2004. Concentration-based loads for nitrogen compounds are allocated for nonpoint sources. The Discharger is subject to the following assigned load allocation for nonpoint sources:

Table 7. Nonpoint Source Load Allocation for Santa Clara River Nitrogen Compounds TMDL
Nitrogen Compounds TMDL Monthly Average
(mg/L)
Combined ammonia (NH3-N), nitrite (NO2-N),
nitrate (NO3-N) loads as nitrogen 10

34. California Water Code section 13263 requires that the Regional Board, when prescribing waste discharge requirements, take into consideration the factors in section 13241. The Regional Board has considered those factors in establishing the WDRs in this Order.

35. State Water Board Resolution No. 68-16, Antidegradation Policy – State Water Board Resolution No. 68-16 “Statement of Policy with Respect to Maintaining High Quality of Waters in California” (also called the “Antidegradation Policy”) requires the Regional Board, in regulating the discharges of waste, to maintain high quality waters of the state unless it is demonstrated that any change in quality is consistent with maximum benefit to the people of the State, will not unreasonably affect beneficial uses, and will not result in water quality less than that described in the State Water Board’s policies (e.g., quality that exceeds water quality objectives).

Further, any activity that produces waste must meet waste discharge requirements that will result in the best practicable treatment or control (BPTC) of the discharge necessary to assure that (a) pollution or nuisance will not occur and (b) the highest water quality consistent with maximum benefit to the people of the State will be maintained.

Excepting chloride (discussed below), the SPWRF's discharge is high quality, tertiary-treated effluent meeting groundwater quality objectives in the Basin Plan and MCLs for drinking water. The Regional Board finds that the discharge, as allowed in 559
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17 this Order, is consistent with Resolution No. 68-16 since this Order: (1) requires compliance with the requirements set forth in this Order, including the use of best practicable treatment and control of the discharges, (2) requires implementation of a Monitoring and Reporting Program (MRP); and (3) requires that the discharges comply with effluent limits to meet water quality objectives. This Order establishes limitations and requirements that will not unreasonably threaten present and anticipated beneficial uses or result in receiving ground water quality that exceeds water quality objectives set forth in the Basin Plan. Limitations for each waste constituent are based on the most stringent applicable water quality objectives to protect the most sensitive beneficial use of the receiving waterbody; thus, all beneficial uses are protected. To ensure such protection, a vigorous monitoring plan is also adopted with this Order. This Order contains requirements for implementing Best Practicable Technology and Control (BPTC). Accordingly, the discharge is consistent with the antidegradation provisions of Resolution 68-16. Based on the results of wastewater treatment and monitoring of effluent and groundwater quality, the Regional Water Board may open this Order to reconsider groundwater limitations and other requirements to comply with Resolution 68-16, if necessary.

Untreated discharges of chloride over the last 10 years have resulted in elevated concentrations of chloride in the effluent and groundwater. The groundwater quality objective for chloride is 110 mg/L and the average effluent chloride concentration in 2016 was 137 mg/L. To comply with the chloride groundwater limitations in this Order, which are based on the chloride groundwater quality objective, the City intends to upgrade the SPWRF with reverse osmosis (RO) in lieu of the recycled water projects to reduce the chloride concentration in the effluent prior to discharge into the percolation pond. This will, in time, restore the impaired groundwater zone adjacent and downgradient to the percolation pond. However, implementation of the RO system will take time to fully implement, which will result in continued localized degradation in the immediate vicinity of the SPWRF percolation ponds. Construction and optimization of the RO system is due to be completed by March 30, 2025, at which time, a chloride concentration in the effluent from the SPWRF of 110 mg/L is required. However, a lag in groundwater quality improvement is expected following the improved quality of the discharge. While groundwater within the 150-foot mixing zone adjacent to the percolation ponds will temporarily exceed the chloride groundwater quality objective, this Order imposes limits on flow and chloride mass loading in the effluent to ensure receiving groundwater beneficial uses will be maintained and supported. Beneficial uses will be maintained as all wells utilized for crop irrigation are located outside the mixing zone. By the final CDO compliance date of February 8, 2028, the mixing zone is no longer allowed and compliance with chloride limitations of 110 mg/L at monitoring wells adjacent and downgradient to the boundaries of the percolation ponds is required.

The Regional Board recognizes that reducing chloride concentrations in the effluent or in the groundwater by using RO can be costly. The current estimated cost for the City to install a RO system is $26.6 million with annual operating and maintenance costs of $1.6 million, including brine waste disposal. These costs would be passed on to the ratepayers, who already pay one of the highest sewer rates in the State. 560
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18 The City is also a small low-income community. The costs of RO treatment depend on the volume of effluent or groundwater to be treated in order to meet the groundwater quality objectives specified in the Basin Plan. To defray the costs of the upgrade, the City has submitted a State Water Board Clean Water State Revolving Fund application with the State Water Board Division of Financial Assistance. The City plans to complete construction of the RO system within two years of receiving the Final Funding Agreement but no later than December 2024.

Incorporating an RO system to reduce chloride and other salts from the SPWRF effluent prior to discharge into the percolation pond will benefit water quality locally and effectively reduce the contribution of chloride and other salts to the Santa ClaraSanta Paula groundwater basin. This Order establishes limitations and requirements protective of the present and anticipated beneficial uses or result in receiving ground water quality that meets or exceeds water quality objectives set forth in the Basin Plan and is therefore, consistent with State Water Board Resolution No. 68-16.

36. California Water Code section 13267 authorizes the Regional Water Board to require the City to submit monitoring and technical reports as necessary to investigate the impact of a waste discharge on waters of the state. The monitoring and reporting requirements established in this Order are necessary to characterize the discharge, evaluate compliance with this Order, and evaluate groundwater quality and the extent of degradation, if any, caused by the discharge.

37. Publicly Owned Treatment Works (POTW) – The term POTW means a treatment works as defined by section 212 of the federal Clean Water Act, which is owned by a State or municipality (as defined by section 502(4) of the Act). This definition includes any devices and systems used in the storage, treatment, recycling and reclamation of municipal sewage or industrial wastes of a liquid nature. It also includes sewers, pipes and other conveyances only if they convey wastewater to a POTW treatment facility. The term also means the municipality as defined in section 502(4) of the Clean Water Act, which has jurisdiction over the indirect discharges to and the discharges from such treatment works. (40 C.F.R. section 403.3(q)). The SPWRF meets all of the above criteria and therefore is considered a POTW.

38. Pretreatment – The City is required to implement a Pretreatment Program and to comply with requirements for operation and maintenance of its sewer collection system. Pursuant to CCR, Title 23, section 2233 and Title 40, Code of Federal Regulations (C.F.R.), Part 403, the City has been implementing an approved industrial wastewater Pretreatment Program for the SPWRF since February 2012.

The Regional Board finds it appropriate to require the City to continue to implement its approved Pretreatment Program.

39. Endangered Species Act Requirements - This Order does not authorize any act that results in the taking of a threatened or endangered species or any act that is now prohibited, or becomes prohibited in the future, under either the California Endangered Species Act (Fish and Game Code, §§ 2050 to 2097) or the Federal Endangered Species Act (16 U.S.C. §§ 1531 to 1544). This Order requires 561
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19 compliance with effluent limits, groundwater quality objectives, and other requirements to protect the beneficial uses of waters of the state. The Discharger is responsible for meeting all requirements of the applicable Endangered Species Act.

40. California Environmental Quality Act - This Order involves the renewal of WDRs for an existing facility. Therefore, this action to prescribe WDRs is exempt from the provisions of CEQA (Public Resources Code section 21000 et seq.) in accordance with California Code of Regulations, Title 14, section 15301.

41. Pursuant to CWC section 13263, the requirements of this Order take into consideration the provisions of CWC section 13241, including the following factors.

A. Past, present, and probable future beneficial uses of water; The receiving water for discharges from the SPWRF is the Santa Clara Valley River Groundwater Basin-Santa Paula subbasin-West of Peck Road. The receiving water limitations in this Order are specified to maintain the beneficial uses of this basin: municipal and domestic water supply (MUN), industrial service supply (IND), industrial process supply (PROC), and agricultural supply (AGR). This Order also specifies effluent limitations protective of the beneficial uses and includes effluent and receiving water monitoring and reporting requirements to verify that discharges will not adversely affect the beneficial uses of groundwater.

B. Environmental characteristics of the hydrographic unit under consideration, including the quality of the water available thereto;
This Order incorporates the site-specific water quality objectives for groundwater in the Basin Plan considering geology, hydrogeology, and hydrology. Based on recent and historical data, the regional groundwater basin currently has high quality water, but is experiencing increases in salt and nitrogen loading from natural and anthropogenic sources. The SPWRF will produce effluent quality that is better than or equivalent to the groundwater quality objectives and will comply with the state’s Antidegradation Policy (Resolution No. 68-16). The project will therefore limit further groundwater degradation.

C. Water quality conditions that could reasonably be achieved through the coordinated control of all factors that affect water quality in the area; The water quality conditions that can be reasonably achieved are those consistent with the site-specific water quality objectives necessary to protect the beneficial uses of the groundwater basin identified in A, above. through the coordinated control of all factors that affect water quality in the area. The City’s plans to upgrade the SPWRF with an advanced treatment system, including RO, is part of the coordinated control of all factors that affect water quality in the areas.
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20 D. Economic considerations;
The City of Santa Paula is identified as a disadvantaged community as defined in CWC section 79505.5. A “disadvantaged community means a community with an annual median household income that is less than 80 percent of the statewide annual median household income.” According to the United States Census Bureau, the 2019 California median household income is $80,440 and the City of Santa Paula median household income is $60,468.

Based on the City’s Water and Sewer Rate Study dated September 2019, the monthly wastewater user rate at monthly water use of 8.1 hundred cubic feet is $98.55 per single family residence in the fiscal year 2021-2022.

Therefore, the implementation of the RO system may cause significant economic impact to the community. The City continuously investigates solutions to minimize economic impact, including submittal of an application to the State Revolving Fund to defray costs to the community.

E. The need for developing housing within the region;
According to the United States Census Bureau, the total population in the City of Santa Paula is 30,657 in 2019. The SPWRF is designed to treat 4.2 MGD of wastewater and currently discharges approximately 2 MGD. The SPWRF has sufficient capacity to treat additional wastewater generated from newly developed residential, commercial, and industrial districts.

F. The need to develop and use recycled water;
The State Water Board adopted the Water Quality Control Policy for Recycled Water (Recycled Water Policy) in 2018 and encourages the increased use of recycled water in California: 714,000 acre-feet per year (AFY) in 2015 to 1.5 million AFY by 2020 and to 2.5 million AFY by 2030. The Recycled Water Policy categorizes recycled water use as agricultural irrigation, landscape irrigation, golf course irrigation, commercial application, industrial application, geothermal energy production, non-potable uses, groundwater recharge, seawater intrusion barrier, reservoir water augmentation, raw water augmentation, and potable uses.

On June 14, 2017, the City enrolled under State Water Board Water Reclamation Requirements for Recycled Water Use Order No. WQ 2016-0068- DDW. The City may distribute the disinfected tertiary-treated wastewater for recycled water applications, as appropriate, consistent with the Recycled Water Policy when the RO system is implemented at the SPWRF. This will help offset the need for potable water.
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21 NOTIFICATION

42. The Regional Board has notified the Discharger and interested agencies and persons of its intent to prescribe WDRs for the discharge and has provided them with an opportunity to submit their written comments and recommendations.

43. The Regional Board, in a public meeting, heard and considered all comments pertaining to the discharge.

44. Any person aggrieved by this action of the Regional Board may petition the State Water Board to review the action in accordance with California Water Code section 13320 and California Code of Regulations, title 23, section 2050 and following. The State Water Board must receive the petition by 5:00 p.m., 30 days after the Regional Board’s action, except that if the thirtieth day following the date of this Order falls on a Saturday, Sunday, or state holiday, the petition must be received by the State Water Board by 5:00 p.m. on the next business day. Copies of the law and regulations applicable to filing petitions will be provided upon request or may be found on the Internet at:
http://www.waterboards.ca.gov/public_notices/petitions/water_quality IT IS HEREBY ORDERED that, in order to meet the provisions contained in Division 7 of the California Water Code (commencing with section 13000) and regulations adopted thereunder, the City of Santa Paula shall comply with the following requirements, including all attachments, in all operations and activities at the SPWRF:

I. INFLUENT LIMITATIONS AND REQUIREMENTS
Influent wastewater shall be limited to wastewater generated within the jurisdiction of the City.

II. EFFLUENT LIMITATIONS
A. Discharges from the SPWRF shall not exceed the maximum effluent volume of

4.2 MGD and the quarterly average effluent volume of 2.6 MGD.

B. Tertiary-treated effluent shall not exceed the effluent limitations in Table 8 below.

Table 8. Effluent Limits
Constituents Units Monthly Average Daily Maximum
Oil and grease mg/L 10[1] 15[1]
Total suspended solids
mg/L 10[1] 15[1]
%removal ≥85[2] None
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22 Constituents Units Monthly Average Daily Maximum
BOD5@20°C
mg/L 10[1] 15[1]
%removal ≥85[2] None
Ammonia as nitrogen +
nitrate as nitrogen +
nitrite as nitrogen
mg/L 10[3] None
Nitrite as nitrogen mg/L 1 None
Total dissolved solids mg/L 2,000[4] None
Sulfate mg/L 800[4] None
Boron mg/L 1.0[4] None
Chloride mg/L 110[4] None
Table Notes:
[1] Limit is based on best professional judgment. Limits adopted by this Regional Board exist in the permits for tertiary-treated wastewater treatment plants. [2] Limit is based on secondary treatment requirements, 40 C.F.R. section 133.102. [3] Limit is based on the Load Allocations for nonpoint sources set forth in the Santa Clara River Nitrogen Compounds TMDL, Resolution No. 2003-011. [4] Limit based on Basin Plan Groundwater Quality Objective.

C. The pH of effluent discharged shall at all times be within the range of 6.5 to 8.5.

Excursion from this range shall not be considered a violation provided the duration is not more than 10 minutes in a 24-hour period, and pH shall at all times be within 6 to 9.

D. Effluent shall, at all times, be adequately disinfected and oxidized and shall meet the following effluent limitations:

1. the median concentration of total coliform bacteria shall not exceed a most probable number (MPN) of 23 per 100 milliliters utilizing the bacteriological results of the last seven days for which analyses have been completed; and

2. the number of total coliform bacteria shall not exceed an MPN of 240 per 100 milliliters in more than one sample in any 30 day period.

Samples shall be collected at a time when wastewater flow and characteristics are most demanding (e.g., during peak flows) on treatment facilities and disinfection processes.
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23 E. A filtered wastewater shall be an oxidized wastewater that has been passed through a membrane so that the turbidity of the filtered wastewater does not exceed any of the following:

1. An average of 2 Nephelometric Turbidity Units (NTU) within a 24-hour period;

2. 5 NTU more than 5 percent of the time within a 24-hour period; and

3. 10 NTU at any time.

F. Maximum Contaminant Levels: The effluent shall not contain trace, toxic and other constituents in concentrations that exceed the applicable maximum contaminant levels for drinking water established by the State Water Board’s Division of Drinking Water (DDW) in sections 64431, 64442, 64443, 64444, 64449, and 64533 of CCR, Title 22, Division 4, or subsequent revisions, or at levels that adversely affect the beneficial uses of receiving groundwater. The effluent shall, at all times, not exceed the following MCLs (Attachment A). In the event of a violation of any primary or secondary MCL, the City shall notify and submit a report in accordance with Provision VI.F. of this Order.

1. Primary MCLs specified in CCR, Title 22, Division 4, Chapter 15 (Domestic Water Quality and Monitoring Regulations):
i. Inorganic chemicals in CCR, Title 22, Division 4, Chapter 15, Section 64431, Table 64431-A, except for nitrogen compounds (Attachment A-1 of this Order);
ii.. Radionuclides in CCR, Title 22, Division 4, Chapter 15, Section 64442, Table 64442 (Attachment A-2 of this Order) and Section 64443, Table 64443 (Attachment A-3 of this Order); and
iii. Organic chemicals in CCR, Title 22, Division 4, Chapter 15, Section 64444, Table 64444-A (Attachment A-4 of this Order).

2. Secondary MCLs specified in CCR, Title 22, Division 4, Chapter 15 (Domestic Water Quality and Monitoring Regulations), Section 64449, Table 64449-A (Attachment A-5 of this Order).

3. Primary MCLs for disinfection byproducts specified in CCR, Title 22, Division 4, Chapter 15.5 (Disinfectant Residuals, Disinfection Byproducts, and Disinfection Byproduct Precursors) Article 2, Section 64533, Table 64533-A (Attachment A-6 of this Order).

III. GROUNDWATER LIMITATIONS
A. The City is prohibited from negatively altering the quality or elevation of the underlying groundwater.
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24 B. The discharge of treated wastewater from the SPWRF shall not cause an exceedance of the following groundwater limitations in Table 9 below. Except for chloride, compliance with the groundwater limitations will be determined by the groundwater samples collected from monitoring wells located within or on the boundary of the percolation pond. Compliance with the chloride groundwater limitation will be determined by the groundwater samples collected from monitoring wells located 150 feet away from the percolation pond. The specific monitoring well locations will be determined through the Monitoring and Reporting Program (MRP) (Attachment E). Per Section IV.C.3 of the MRP, the City is required to submit a work plan proposing a modified groundwater monitoring network by May 1, 2018.

Table 9. Groundwater Limitations
Constituents Units Monthly Average
Nitrate as nitrogen + nitrite as nitrogen mg/L 10[1]
Nitrite as nitrogen mg/L 1
[1]
Total dissolved solids mg/L 2,000[1]
Sulfate mg/L 800[1]
Chloride mg/L 110[1]
Boron mg/L 1.0[1]
Total coliform MPN/100mL 1.1[1]
Fecal coliform MPN/100mL 1.1[1]
Table Note:
[1] Limit based on Basin Plan Groundwater Quality Objective.

C. Groundwater shall not exceed the MCLs specified in Attachments A-1 to A-6.

E. The minimum vertical separation between the bottom of the percolation pond and groundwater table shall be five feet.

IV. GENERAL REQUIREMENTS
A. The SPWRF and areas where any potential pollutants are stored shall be adequately protected from inundation and damage by storm flows and runoff.

B. Adequate facilities shall be provided to protect the SPWRF, treatment system devices, sewer collection system and recycling/disposal facilities from damage by storm flows and run-off or run-on generated by a 100-year return storm/24 hour duration.
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25 C. The SPWRF and the collection system that is a part of the treatment and disposal system shall be maintained in such a manner that prevents sewage from surfacing or overflowing at any location.

D. A minimum of two feet of freeboard shall be maintained in the percolation/evaporation ponds at all time to ensure that direct rainfall will not cause overtopping.

E. No disposal areas with treated wastewater shall be located within 600 feet of any domestic water supply well unless all of the following conditions have been met:

1. A geological investigation demonstrates that an aquitard exists at the well between the uppermost aquifer being drawn from and the ground surface;

2. The well contains an annular seal that extends from the surface into the aquitard;

3. The well is housed to prevent any treated wastewater spray from coming into contact with the wellhead facilities;

4. The ground surface immediately around the wellhead is contoured to allow surface water to drain away from the well; and

5. The owner of the well approves of the elimination of the buffer zone requirement.

F. There shall be no storage or impoundment of treated wastewater within 600 feet of any domestic water supply well.

G. No disposal of sludge, waste, and treated wastewater shall take place within 600 feet of any reservoir or stream used as a source of domestic water.

H. Any wastes that do not meet the foregoing requirements shall be held in impervious containers and discharged at a legal point of disposal.

I. Percolation ponds shall be maintained to ensure that percolation rate at the pond bottom shall not decrease over time.

J. The Discharger shall notify well owners within 500 feet radius from the boundary of percolation ponds when there is any exceedance on the effluent limitations and/or groundwater limitations.

K. The City shall, at all times, properly operate and maintain all treatment facilities and control systems (and related appurtenances), which are installed or used by the City to achieve compliance with the conditions of this Order. Proper operation and maintenance include effective performance, adequate funding, 568
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V. PROHIBITIONS
A. Any discharge of wastewater from the SPWRF (including the wastewater collection system) at any point other than specifically described in this Order is prohibited.

B. There shall be no waste overflows or discharge of untreated or partially-treated waste from the SPWRF’s treatment, storage or disposal facilities to adjacent drainage or water ways, adjacent properties, or to waters of the State at any time. The discharge of any wastewater to surface waters or surface water drainage courses is prohibited without a NPDES permit.

C. Industrial wastewater subject to the Prohibited Discharge Standards in 40 C.F.R. section 403.5 shall not be accepted by the SPWRF.

D. Wastes discharged shall not contain tastes, odors, color, foaming, any materials, or other objectionable characteristics in concentrations that would:

1. Affect human, animal, or plant life;

2. Cause nuisance or adversely affect any beneficial uses and quality of the receiving groundwater; and

3. Impact the Santa Clara River that may be in hydraulic connection with groundwater.

E. Odors originating at the SPWRF, including of sewage origin, shall not be perceivable any time outside the boundary of the SPWRF property owned by the City.

F. The percolation pond shall not contain floating materials, including solids, foams, or scum in concentrations that cause nuisance, adversely affect beneficial uses, or serve as a substrate for undesirable bacterial or algae growth or insect vectors. The wastewater treatment shall not result in nuisance conditions caused by breeding of mosquitoes, gnats, midges, or other pests.

G. Discharge of waste classified as “hazardous waste,” as defined in CCR, Title 23, section 2521(a), is prohibited. Discharge of waste classified as “designated waste,” as defined in California Water Code section 13173, in a manner that causes violation of receiving water limits is prohibited.

H. The percolation/evaporation ponds, drying beds, and the berms surrounding the ponds shall not contain plants, shrubs, or bushes that may damage the berms and the ponds.
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27 I. The percolation pond shall not be altered without the approval by the Regional Board.

J. There shall be no onsite disposal of sludge. Sludge-drying activities are allowed, but only as an intermediate treatment prior to offsite disposal. Any offsite disposal of wastewater or sludge shall be made only to a legal point of disposal. For purposes of this Order, a legal disposal site is one for which requirements have been established by USEPA, and which is in full compliance therewith. Any wastewater or sludge handling shall be in such a manner as to prevent its reaching surface waters or watercourses.

K. Bypass (the intentional diversion of waste streams from any portion of the SPWRF) is prohibited. The Regional Board may take enforcement action against the City for bypass, unless:

1. Bypass was unavoidable to prevent loss of life, personal injury, or severe property damage. “Severe property damage” means substantial physical damage to property, damage to the SPWRF that cause it to become inoperable, or substantial and permanent loss of natural resources that can reasonably be expected to occur in the absence of a bypass.

2. There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, retention of untreated waste, or maintenance during normal periods of equipment downtime. This condition is not satisfied if adequate back-up equipment should have been installed in the exercise of reasonable engineering judgment to prevent a bypass that occurred during normal periods of equipment downtime or preventive maintenance.

3. Notice
i. Anticipated bypass: If the City knows in advance of the need for a bypass, it shall submit written notice to the Regional Board, if possible at least 10 days before the date of the bypass. ii. Unanticipated bypass: The City shall provide verbal notice to the Regional Board Executive Officer of an unanticipated bypass within 24 hours from the time the City becomes aware of the circumstances.

A written submission shall also be provided within five (5) days of the time the City becomes aware of the circumstances.

L. The wastewater treatment and percolation ponds shall not result in nuisance conditions caused by breeding of mosquitoes, gnats, midges, or other pests.

VI. PROVISIONS
A. This Order includes “Attachment B - Standard Provisions Applicable to Waste Discharge Requirements” (Standard Provisions). If there is any conflict 570
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B. The City shall operate and maintain facilities, treatment operations, associated collection systems and outfalls in ways that preclude adverse impacts to surface or groundwater from impacts predicted to occur due to climate change.

C. The City shall evaluate the need to revise its Climate Change Effects Vulnerability Assessment and Management Plan (Climate Change Plan) when conditions change that may impact water quality. The City shall periodically submit a report of its evaluation or a revised Climate Change Plan based on its evaluation. Submittal of the Climate Change Plan is required pursuant to California Water Code section 13267. As required by this provision, a regional board may require a person to submit technical or monitoring program reports that the regional board requires. The Climate Change Plan is needed in order to assess and manage climate change related-effects associated with City operations that may affect water quality.

The Climate Change Plan shall include an assessment of short and long term vulnerabilities of the facility(ies) and operations as well as plans to address vulnerabilities of collection systems, facilities, treatment systems, and outfalls for predicted impacts in order to ensure that facility operations are not disrupted, compliance with permit conditions is achieved, and receiving waters are not adversely impacted by discharges. Control measures shall include, but are not limited to, emergency procedures, contingency plans, alarm/notification systems, training, backup power and equipment, and the need for planned mitigations to ameliorate climate-induced impacts including, but not limited to, changing influent and receiving water quality and conditions, as well as the impact of rising sea level (where applicable) storm surges and back-to-back severe storms that are expected to become more frequent.

D. The City shall comply with MRP No. CI-9259 (Attachment E), which is part of this Order, and any revisions thereto as ordered by the Executive Officer. The submittal dates of Discharger self-monitoring reports shall be no later than the submittal date specified in the MRP. If there is any conflict between the provisions stated herein and the MRP, the provisions stated herein prevail.

E. The City shall file with the Regional Board, under penalty of perjury, annual and quarterly reports on self-monitoring work performed according to the detailed specifications contained in the MRP attached hereto and incorporated herein by reference, as directed by the Executive Officer. The results of any monitoring done in addition to what is required or done more frequently than required at the location and/or times specified in the MRP shall be reported to the Regional Board. The City shall comply with all of the provisions and requirements of the MRP.
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29 F. The City shall notify this Regional Board by telephone or electronic means within 24 hours of knowledge of any discharge exceeding the effluent limits prescribed in this Order from the SPWRF; written confirmation shall follow within 5 working days from date of notification, unless otherwise specified in this Order. The report shall include, but is not limited to, the following information, as appropriate:

1. Nature and extent of the violation;

2. Date and time: when the violation started, when compliance was achieved, and when injection was suspended and restored, as applicable;

3. Duration of violation;

4. Cause(s) of violation;

5. Corrective and/or remedial actions taken and/or will be taken with a time schedule for implementation to prevent future violations; and

6. Impact of the violation.

G. This Order does not exempt the City from compliance with any other laws, regulations, or ordinances that may be applicable; they do not legalize the recycling and use facilities; and they leave unaffected any further constraint on the use of recycled water at certain site(s) that may be contained in other statutes or required by other agencies.

H. This Order does not alleviate the responsibility of the City to obtain other necessary local, state, and federal permits to construct facilities necessary for compliance with this Order; nor does this Order prevent imposition of additional standards, requirements, or conditions by any other regulatory agency.

Expansion of the recycled water distribution facility shall be contingent upon issuance of all necessary requirements and permits, including a conditional use permit.

I. After notice and opportunity for a hearing, this Order may be modified, revoked and reissued, or terminated for cause, that includes, but is not limited to: failure to comply with any condition in this Order, endangerment of human health, adverse impacts on water quality and/or beneficial uses of the receiving water resulting from the permitted activities in this Order, obtaining this Order by misrepresentation or failure to disclose all relevant facts, and acquisition of new information that could have justified the application of different conditions if known at the time of Order adoption.

The filing of a request by the City for modification, revocation and reissuance, or termination of this Order; or a notification of planned changes or anticipated noncompliance does not stay any condition of this Order. 572
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30 J. The City shall furnish, within a reasonable time, any information that the Regional Board may request to determine whether cause exists for modifying, revoking and reissuing, or terminating this Order. The City shall also provide the Regional Board, upon request, with copies of records required to be kept under this Order for at least three (3) years.

K. Spill Clean-Up Contingency Plan (SCCP) Requirements – The City is required to periodically submit an updated and revised SCCP, which describes the activities and protocols to address clean-up of spills, overflows, and bypasses of untreated or partially treated wastewater from the City’s collection system or treatment facilities. At a minimum, this SCCP shall include sections on spill clean-up and containment measures, public notification, and monitoring. The City shall review and amend this SCCP as appropriate after each spill from the SPWRF or in the service area of the SPWRF. The City shall include a discussion in the annual summary report of any modifications to the SCCP and the application of the SCCP to all spills during the year.

L. Construction, Operation, and Maintenance Requirements

1. The City shall, at all times, properly operate and maintain the SPWRF, including its wastewater collection, treatment, and disposal facilities (and related appurtenances) to ensure compliance with this Order, as well as provide adequate and reliable transport, treatment, and disposal of all wastewater from planned future wastewater sources under the City’s responsibilities. Proper operation and maintenance includes, but is not limited to: effective performance, repairs and upgrades when needed, adequate funding, adequate operator staffing and training, adequate operator supervision, and adequate laboratory and process controls (including appropriate quality assurance/quality control procedures).

2. The SPWRF shall be supervised and operated by persons possessing certificates of appropriate grade in accordance with CCR, Title 23, Division 3, Chapter 26 and California Water Code sections 13625 - 13633.

3. The SPWRF shall be operated and maintained in accordance with the operation and maintenance manual prepared by the municipality through the Clean Water Grant Program. The City’s Operation, Maintenance, and Monitoring Plan (OMM Plan) shall be available for reference and use by all applicable personnel. The City shall maintain, regularly review, and revise or update as necessary the OMM Plan in order for the document(s) to remain useful and relevant to current equipment and operation practices. Reviews shall be conducted annually, and revisions or updates shall be completed as necessary and submitted to the Regional Board on an annual basis.

4. The City shall maintain in good working order a sufficient alternate power source for operating the wastewater treatment and disposal facilities. All 573
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31 equipment shall be located to minimize failure due to moisture, liquid spray, flooding, and other physical phenomena. The alternate power source shall be designed to permit inspection and maintenance and shall provide for periodic testing. If such alternate power source is not in existence, the City shall halt, reduce, or otherwise control all discharges upon the reduction, loss, or failure of the primary source of power.

5. The City shall provide standby or emergency power facilities and/or sufficient storage capacity or other means so that in the event of plant upset, outage due to power failure or other cause, or heavy rainfall, discharge of raw or inadequately treated sewage does not occur and infiltration ponds do not exceed their hydraulic capacity.

M. Sludge Disposal Requirements

1. All sludge generated at the wastewater treatment plant shall be disposed of, treated, or applied to land in accordance with federal regulations contained in 40 C.F.R. Part 503. These requirements are enforceable by USEPA.

2. The City shall comply with requirements in State Water Board Order No. 2004-10-DWQ, “General Waste Discharge Requirements for the Discharge of Biosolids to Land for Use as a Soil Amendment in Agricultural, Silvicultural, Horticultural and Land Reclamation Activities” for those sites receiving the City's biosolids that a regional water board has placed under this general order, and with the requirements in individual waste discharge requirements issued by a regional water board for sites receiving the City's biosolids.

3. The City shall comply, if applicable, with WDRs issued by other regional water boards to which jurisdiction the biosolids are transported and applied.

4. The City shall provide this Regional Board with a copy of any report(s) submitted to USEPA, the State Water Board, or other regional water boards, with respect to municipal sludge or biosolids.

N. Collection System Requirements
The City must properly enroll under the applicable General WDRs for Sanitary Sewer Systems and comply with the requirements specified in the General WDRs. The State Water Board adopted General WDRs for Sanitary Sewer Systems (Order No. 2006-0003-DWQ) on May 2, 2006 and amended the WDRs by Order No. WQ 2008-0002-EXEC and Order No. WQ 2013-0058- EXEC, to provide a consistent and statewide approach to regulating sanitary sewer systems to prevent and/or reduce sanitary sewer overflows (SSOs).

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32 plans and report all SSOs to the State Water Board’s online SSO database.

The City’s collection system is part of the system that is subject to Order No. 2006-0003-DWQ. The City enrolled in Order No. 2006-0003-DWQ on July 27, 2006. As such, the City must properly operate and maintain its collection system. The City must also report any non-compliance and mitigate any discharge from the collection system in violation of this Order.

O. Spill Reporting Requirements

1. Initial Notification – Although State and Regional Board staff do not have duties as first responders, this requirement is an appropriate mechanism to ensure that the agencies that do have first responder duties are notified in a timely manner in order to protect public health and beneficial uses.

For certain spills, overflows and bypasses, the City shall make notifications as required below:
i. In accordance with the requirements of Health and Safety Code section 5411.5, the City shall provide notification to the local health officer or the director of environmental health with jurisdiction over the affected water body of any unauthorized release of sewage or other waste that causes, or probably will cause, a discharge to any waters of the state as soon as possible, but no later than two (2) hours after becoming aware of the release.
ii. In accordance with the requirements of California Water Code section 13271, the City shall provide notification to the California Emergency Management Agency (Cal EMA) of the release of reportable quantities of hazardous substances or sewage that causes, or probably will cause, a discharge to any waters of the state as soon as possible, but not later than two (2) hours after becoming aware of the release. CCR, Title 23, section 2250 establishes 1,000 gallons or more as a reportable quantity of sewage. The phone number for reporting these releases to the Cal EMA is (800) 852- 7550.
iii. The City shall notify the Regional Board of any unauthorized release of sewage from the SPWRF that causes, or probably will cause, a discharge to a water of the state as soon as possible, but not later than two (2) hours after becoming aware of the release. This initial notification does not need to be made if the City has notified Cal EMA and the local health officer or the director of environmental health with jurisdiction over the affected waterbody. The phone number for reporting these releases of sewage to the Regional Board is (213) 576-6683. The phone numbers for after hours and weekend reporting of releases of sewage to the Regional Board are (213) 305- 2284 and (213) 305-2253.
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33 At a minimum, the following information shall be provided to the Regional Board:
a. The location, date, and time of the release;
b. The water body that may be impacted by the discharge; c. An estimate of the amount of sewage or other waste released and the amount that reached the receiving water at the time of notification;
d. If ongoing, the estimated flow rate of the release at the time of the notification;
e. The name, organization, phone number, and email address of the reporting representative; and
f. A certification that the State Office of Emergency Services and the local health officer or directors of environmental health with jurisdiction over the possibly affected water bodies have been notified of the discharge.

2. Monitoring – For spills, overflows and bypasses reported under Section VI.O.1., the City shall monitor as required below:

To define the geographical extent of the spill’s impact, the City shall obtain grab samples (if feasible, accessible, and safe) for all spills, overflows or bypasses of any volume that reach any waters of the State (including surface and ground waters). The City shall analyze the samples for total and fecal coliforms, E. coli (if fecal coliform test shows positive), enterococcus, and relevant pollutants of concern, upstream and downstream of the point of entry of the spill (if feasible, accessible and safe). This monitoring shall be done on a daily basis from the time the spill is known until the results of two (2) consecutive sets of bacteriological monitoring indicate the return to the background level or the County Department of Public Health authorizes cessation of monitoring.

3. Reporting – The initial notification required under Section VI.O.1. shall be followed by:
i. As soon as possible, but not later than twenty-four (24) hours after becoming aware of an unauthorized discharge of sewage or other waste from its wastewater treatment plant to a water of the state, the City shall submit a statement to the Regional Board via email. If the discharge is 1,000 gallons or more, this statement shall certify that Cal EMA has been notified of the discharge in accordance with California Water Code section 13271. The statement shall also certify that the local health officer or director of environmental health 576
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34 with jurisdiction over the affected water bodies has been notified of the discharge in accordance with Health and Safety Code section 5411.5. The statement shall also include at a minimum the following information:
a. Agency, Order No., and MRP CI No.;
b. The location, date, and time of the discharge;
c. The water body that received the discharge;
d. A description of the level of treatment of the sewage or other waste discharged;
e. An initial estimate of the amount of sewage or other waste released and the amount that reached the impacted water body; f. The Cal EMA control number and the date and time that notification of the incident was provided to Cal EMA; and g. The name of the local health officer or director of environmental health representative notified (if contacted directly); the date and time of notification; and the method of notification (e.g., phone, fax, email).
ii. A written preliminary report shall be submitted to the Regional Board within five (5) working days after disclosure of the incident via the State Water Board GeoTracker database under Global ID
WDR100000359. The final written report shall be included in the next quarterly monitoring report submitted to the GeoTracker database above. The written report shall document the information required in Section VI.O.4. below, monitoring results and any other information required in provisions of the Standard Provisions (Attachment B) including corrective measures implemented or proposed to be implemented to prevent/minimize future occurrences.
iii. The City shall include a certification in the annual summary report (due according to the schedule in the MRP) that states that the sewer system emergency equipment, including alarm systems, backup pumps, standby power generators, and other critical emergency pump station components were maintained and tested in accordance with the City’s preventive maintenance plan. Any deviations from or modifications to the preventive maintenance plan shall be approved by the Executive Officer.

4. Records – The City shall prepare and maintain a record of all spills, overflows or bypasses of raw or partially treated sewage from its collection system or the SPWRF. This record shall be made available to the 577
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35 Regional Board upon request and a spill summary shall be included in the annual report, as required in the MRP. The record shall contain:
i. The date and time of each spill, overflow, or bypass; ii. The location of each spill, overflow, or bypass;
iii. The estimated volume of each spill, overflow, or bypass including gross volume, amount recovered and amount not recovered, monitoring results as required by Section VI.O.2.;
iv. The cause of each spill, overflow, or bypass;
v. Whether each spill, overflow, or bypass entered a receiving water and, if so, the name of the water body and whether it entered via storm drains or other man-made conveyances;
vi. Any corrective measures implemented or proposed to be implemented to prevent/minimize future occurrences; and vii. The mandatory information included in Sanitary Sewer Overflows (SSO) online reporting for finalizing and certifying the SSO report for each spill, overflow, or bypass under State Water Board Order No. 2006-0003-DWQ.

5. Activities Coordination – The Regional Board expects that the City will coordinate their compliance activities for consistency and efficiency with other entitles that have responsibilities to implement: (i) this Order, and (ii) State Water Board Order No. 2006-0003-DWQ.

6. Consistency with State Water Board Order No. 2006-0003-DWQ – The requirements contained in this Order in Sections VI.K. (SCCP Requirements), VI.L. (Construction, Operation, and Maintenance Requirements), and VI.O. (Spill Reporting Requirements) are intended to be consistent with the requirements of Order No. 2006-0003-DWQ. The Regional Board recognizes that there may be some overlap between this Order and Order No. 2006-0003-DWQ. The requirements of Order No. 2006-0003-DWQ are considered the minimum thresholds (see Finding 11 of Order No. 2006-0003-DWQ). To encourage efficiency, the Regional Board will accept the documentation prepared by the City under Order No. 2006-0003-DWQ for compliance purposes, as satisfying the requirements in Sections VI.K., VI.L., and VI.O. provided the more stringent provisions enumerated in this Order have also been addressed.

P. Pretreatment Requirements

1. This Order includes the City’s Pretreatment Program, as previously submitted to this Regional Board and specified in Order No. R4-2007- 578
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36 0028-R2, adopted by this Regional board on February 2, 2012. Any change to the Program shall be reported to the Regional Board in writing and shall not become effective until approved by the Executive Officer in accordance with procedures established in 40 C.F.R. section 403.18.

2. The City shall enforce the requirements under Sections 307(b), 307(c), 307(d), and 402(b) of the Federal Clean Water Act with timely, appropriate, and effective enforcement actions. The City shall require industrial users to comply with Federal Categorical Standards and shall initiate enforcement actions against those users who do not comply with the standards. The City shall require industrial users subject to the Federal Categorical Standards to achieve compliance no later than the date specified in those requirements or, in the case of a new industrial user, upon commencement of the discharge.

3. The City shall perform the pretreatment functions as required in 40 C.F.R.

Part 403 including, but not limited to:
i. Implement the necessary legal authorities as provided in 40 C.F.R. section 403.8(f)(1);
ii. Enforce the pretreatment requirements under 40 C.F.R. sections 403.5 and 403.6;
iii. Implement the programmatic functions as provided in 40 C.F.R. section 403.8(f)(2); and
iv. Provide the requisite funding of personnel to implement the Pretreatment Program as provided in 40 C.F.R. section 403.8(f)(3).

4. The City shall submit an annual report of effectiveness of the City’s Pretreatment Program. This annual report shall be submitted to the Regional Board, with copies to the State Water Board and USEPA Region 9, describing the City's pretreatment activities over the period and whether such activities have been effective. If the City is not in compliance with any conditions or requirements of this Order, the City shall include the reasons for noncompliance and shall state how and when the City will comply with such conditions and requirements.

5. The City shall be responsible and liable for the performance of all control authority pretreatment requirements contained in 40 C.F.R. Part 403, including subsequent regulatory revisions thereof. Where Part 403 or subsequent revision places mandatory actions upon the City as Control Authority, but does not specify a timetable for completion of the actions, the City shall complete the required actions within six months from the effective date of this Order or the effective date of Part 403 revisions, whichever comes later. For violations of pretreatment requirements, the City shall be subject to enforcement actions, penalties, fines, and other 579
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37 remedies by the Regional Board, USEPA, or other appropriate parties, as provided in the Federal Clean Water Act. The Regional Board or USEPA may initiate enforcement action against an industrial user for noncompliance with acceptable standards and requirements as provided in the Federal Clean Water Act and/or the California Water Code.

VII. REOPENER
The Regional Water Board will review this Order periodically and will revise requirements when necessary. The waste discharge requirements and monitoring and reporting requirements in this Order were developed based on currently available technical information and applicable water quality laws, regulations, policies, and plans, and are intended to assure compliance with them. If applicable laws and regulations change, including but not limited to, establishment of total maximum daily loads, or once new information is obtained that will change the overall discharge and its potential to impact waters of the state, it may be appropriate to reopen this Order. This Order may also specifically be reopened to make revisions consistent with an approved salt and nutrient management plan.

VIII. TERMINATION
Except for enforcement purposes, Order No. R4-2007-0028, adopted by the Regional Board on May 3, 2007, and amended on May 6, 2010, February 2, 2012, April 6, 2017 and December 21, 2017, is hereby terminated.

The Regional Board’s termination of prior waste discharge requirements and/or monitoring and reporting requirements do not extinguish any violations that may have occurred during the time those requirements were in effect. The Regional Board reserves the right to take enforcement actions to address violations of prior prohibitions, limitations, specifications, requirements, or provisions of rescinded requirements as allowed by law.

IX. EFFECTIVE DATE
This Order becomes effective immediately upon its adoption.

I, Renee Purdy, Executive Officer, do hereby certify that the foregoing is a full, true, and correct copy of an Order originally adopted on February 8, 2018 and amended and adopted by the California Regional Water Quality Control Board, Los Angeles Region on May 12, 2022.

Renee Purdy
Executive Officer
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38 Figure 1 – The Vicinity of Santa Paula Water Recycling Facility (SPWRF) 581
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39 Figure 2 – Santa Paula Groundwater Basin
582
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40 Figure 3 – Process Flow Schematic of Santa Paula Wastewater Recycling Facility 583
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41 Figure 4 – Process Flow Schematic of Reverse Osmosis Advanced Wastewater Treatment System at Santa Paula Water Recycling Facility
584
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42 Figure 5 – Locations of Groundwater Monitoring Wells 585
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43 Figure 6 – Santa Clara River Watershed Surface Reaches 586
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A-1
Attachment A – Maximum Contaminant Levels
Attachment A-1 Inorganic Chemicals
Table 64431-A
Chemical Maximum Contaminant Levels
(mg/L)
Reporting Detection Limit
(mg/L)
Aluminum 1 0.05
Antimony 0.006 0.006
Arsenic 0.010 0.002
Asbestos 7 MFL [1] 0.2 MFL [2]
Barium 1 0.1
Beryllium 0.004 0.001
Cadmium 0.005 0.001
Chromium 0.05 0.01
Cyanide 0.15 0.1
Fluoride 2.0 0.1
Mercury 0.002 0.001
Nickel 0.1 0.01
Nitrate (as nitrogen) 10 0.4
Nitrate+Nitrite (sum
as nitrogen) 10 Not applicable
Nitrite (as nitrogen) 1 0.4
Perchlorate 0.006 0.002

0.001 [3]
Selenium 0.05 0.005
Thallium 0.002 0.001
Note: [1] MFL = million fibers per liter; MCL for fibers exceeding 10 µm in length. [2] Reporting detection limit for fibers exceeding 10 µm in length. [3] Effective January 1, 2024.
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Attachment A-2 Radioactivity
Gross alpha and gross beta analysis must be performed. If gross alpha is greater than 1 picocurie per liter (pCi/L), uranium analysis must be performed. Compliance with this Order shall then be based on comparing gross alpha minus total uranium to the gross alpha limit of 15 pCi/L.

Radium-226 and radium-228 analysis must be performed, and combined Radium-226 and radium-228 activity must be less than or equal to 5 pCi/L. If gross alpha is less than 50 pCi/L, one can assume radium-226 activity is equal to gross alpha activity for purposes of meeting the 5 pCi/L limit.

Table 64442
Radionuclide Maximum Contaminant Level
(pCi/L)
Reporting Detection Limit
(pCi/L)
Radium-226 None 1
Radium-228 None 1
Combined radium226 and radium-228 5 Not applicable
Gross Alpha particle
activity (excluding
radon and uranium)
15 3
Uranium 20 1
Note: pCi/L = picocuries per liter
Table 64443
Radionuclide Maximum Contaminant Level
(pCi/L)
Reporting Detection Limit
(pCi/L)
Beta/photon emitters
4 millirem per year annual dose
equivalent to the total body or
any internal organ
Gross Beta particle activity:
4 Strontium-90
8 (= 4 millirem per year dose to
bone marrow)
2 Tritium
20,000
(=4 millirem per year dose to
total body)
1,000
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Attachment A-3 Organic Chemicals
Table 64444-A
(a) Volatile Organic Chemicals (VOCs)
Chemical
Maximum Contaminant
Levels
(mg/L)
Reporting Detection
Limit
(mg/L)
Benzene 0.001 0.0005
Carbon Tetrachloride 0.0005 0.0005
1,2-Dichlorobenzene 0.6 0.0005
1,4-Dichlorobenzene 0.005 0.0005
1,1-Dichloroethane 0.005 0.0005
1,2-Dichloroethane 0.0005 0.0005
1,1-Dichloroethylene 0.006 0.0005
cis-1,2-Dichloroethylene 0.006 0.0005
trans-1,2-Dichloroethylene 0.01 0.0005
Dichloromethane 0.005 0.0005
1,2-Dichloropropane 0.005 0.0005
1,3-Dichloropropene 0.0005 0.0005
Ethylbenzene 0.3 0.0005
Methyl-tert-butyl ether 0.013 0.003
Monochlorobenzene 0.07 0.0005
Styrene 0.1 0.0005
1,1,2,2-Tetrachloroethane 0.001 0.0005
Tetrachloroethylene 0.005 0.0005
Toluene 0.15 0.0005
1,2,4-Trichlorobenzene 0.005 0.0005
1,1,1-Trichloroethane 0.200 0.0005
1,1,2-Trichloroethane 0.005 0.0005
Trichloroethylene 0.005 0.0005
Trichlorofluoromethane 0.15 0.005
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1,1,2-Trichloro-1,2,2-
Trifluoroethane 1.2 0.01
Vinyl Chloride 0.0005 0.0005
Xylenes 1.750 [1] 0.0005
(b) Synthetic Organic Chemicals (SOCs)
Chemical
Maximum Contaminant
Levels
(mg/L)
Reporting Detection
Limit
(mg/L)
Alachlor 0.002 0.001
Atrazine 0.001 0.0005
Bentazon 0.018 0.002
Benzo(a)pyrene 0.0002 0.0001
Carbofuran 0.018 0.005
Chlordane 0.0001 0.0001
2,4-D 0.07 0.01
Dalapon 0.2 0.01
Dibromochloropropane 0.0002 0.00001
Di(2-ethylhexyl)adipate 0.4 0.005
Di(2-ethylhexyl)phthalate 0.004 0.003
Dinoseb 0.007 0.002
Diquat 0.02 0.004
Endothall 0.1 0.045
Endrin 0.002 0.0001
Ethylene Dibromide 0.00005 0.00002
Glyphosate 0.7 0.025
Heptachlor 0.00001 0.00001
Heptachlor Epoxide 0.00001 0.00001
Hexachlorobenzene 0.001 0.0005
Hexachlorocyclopentadiene 0.05 0.001
Lindane 0.0002 0.0002
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A-5
Chemical
Maximum Contaminant
Levels
(mg/L)
Reporting Detection
Limit
(mg/L)
Methoxychlor 0.03 0.01
Molinate 0.02 0.002
Oxamyl 0.05 0.02
Pentachlorophenol 0.001 0.0002
Picloram 0.5 0.001
Polychlorinated Biphenyls 0.0005 0.0005
Simazine 0.004 0.001
Thiobencarb 0.07 0.001
Toxaphene 0.003 0.001
1,2,3-Trichloropropane 0.000005 0.000005
2,3,7,8-TCDD (Dioxin) 3×10-8 5×10-9
2,4,5-TP (Silvex) 0.05 0.001
Note: [1] MCL is for either a single isomer or the sum of the isomers. 591
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A-6
Attachment A-4 Secondary Maximum Contaminant Levels
Table 64449-A
Chemical Levels/Units
Aluminum 0.2 mg/L
Color 15 Units
Copper 1.0 mg/L
Foaming Agents (MBAS) 0.5 mg/L
Iron 0.3 mg/L
Manganese 0.05 mg/L
Methyl-tert-butyl ether (MTBE) 0.005 mg/L
Odor -Threshold 3 Units
Silver 0.1 mg/L
Thiobencarb 0.001 mg/L
Turbidity 5 Units
Zinc 5.0 mg/L
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Attachment A-5 Disinfection Byproducts
Table 64533-A
Chemical
Maximum Contaminant
Levels
(mg/L)
Reporting Detection
Limit
(mg/L)
Total trihalomethanes
(TTHM) 0.080 None
Bromodichloromethane None 0.0010
Bromoform None 0.0010
Chloroform None 0.0010
Dibromochloromethane None 0.0010
Haloacetic acids (five)
(HAA5) 0.060 None
Monochloroacetic Acid None 0.0020
Dichloroacetic Acid None 0.0010
Trichloroacetic Acid None 0.0010
Monobromoacetic Acid None 0.0010
Dibromoacetic Acid None 0.0010
Bromate [1] 0.010 0.0050

0.0010 [2]
Chlorite [3] 1.0 0.020
Notes: [1] Bromate is listed for plant using ozone disinfection only. [2] For analysis performed using EPA Method 317.0 Revision 2.0, 321.8, or 326.0.
[3] Chlorite is listed for plant using chlorine dioxide only. 593
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B-1
Attachment B – Standard Provisions
Applicable to Waste Discharge Requirements

1. Duty to Comply
The discharger must comply with all conditions of these waste discharge requirements. A responsible party has been designated in the Order for this project, and is legally bound to maintain the monitoring program and permit. Violations may result in enforcement actions, including Regional Board orders or court orders requiring corrective action or imposing civil monetary liability, or in modification or revocation of these waste discharge requirements by the Regional Board. (California Water Code, Sections 13261, 13263, 13265, 13268, 13300, 13301, 13304, 13340, and 13350). Failure to comply with any waste discharge requirement, monitoring and reporting requirement, or other order or prohibition issued, reissued or amended by the Los Angeles Water Board or State Water Resources Control Board is a violation of these waste discharge requirements and the Water Code, which can result in the imposition of civil liability. (California Water Code, Section 13350, subdivision (a).)

2. General Prohibition
Neither the treatment nor the discharge of waste shall create a pollution, contamination or nuisance, as defined by California Water Code section 13050. In addition, the discharge of waste classified as hazardous, as defined in California Code of Regulations, Title 23, Section 2521, subdivision (a) is also prohibited.

3. Availability
A copy of these waste discharge requirements shall be maintained at the discharge facility and be available at all times to operating personnel. (California Water Code, Section 13263)

4. Change in Ownership
The discharger must notify the Executive Officer, in writing at least 30 days in advance of any proposed transfer of this Order’s responsibility and coverage to a new discharger containing a specific date for the transfer of this Order’s responsibility and coverage between the current discharger and the new discharger.

This agreement shall include an acknowledgement that the existing discharger is liable for violations up to the transfer date and that the new discharger is liable from the transfer date forward. (California Water Code, Sections 13267 and 13263)

5. Change in Discharge
In the event of a material change in the character, location, or volume of a discharge, the discharger shall file with this Regional Board a new Report of Waste Discharge. 594
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(California Water Code, Section 13260, subdivision (c)). A material change includes, but is not limited to, the following:
(a) Addition of a major industrial waste discharge to a discharge of essentially domestic sewage, or the addition of a new process or product by an industrial facility resulting in a change in the character of the waste. (b) Significant change in disposal method, e.g., change from a land disposal to a direct discharge to water, or change in the method of treatment which would significantly alter the characteristics of the waste.
(c) Significant change in the disposal area, e.g., moving the discharge to another drainage area, to a different water body, or to a disposal area significantly removed from the original area potentially causing different water quality or nuisance problems.
(d) Increase in flow beyond that specified in the waste discharge requirements. (e) Increase in the area or depth to be used for solid waste disposal beyond that specified in the waste discharge requirements. (California Code of Regulations, Title 23, Section 2210)

6. Revision
These waste discharge requirements are subject to review and revision by the Regional Board. (California Water Code, Sections 13263)

7. Notification
Where the discharger becomes aware that it failed to submit any relevant facts in a Report of Waste Discharge or submitted incorrect information in a Report of Waste Discharge or in any report to the Regional Board, it shall promptly submit such facts or information. (California Water Code, Sections 13260 and 13267)

8. Vested Rights
This Order does not convey any property rights of any sort or any exclusive privileges. The requirements prescribed herein do not authorize the commission of any act causing injury to persons or property, do not protect the discharger from his liability under Federal, State or local laws, nor do they create a vested right for the discharger to continue the waste discharge. (California Water Code, Section 13263, subdivision (g).)

9. Severability
Provisions of these waste discharge requirements are severable. If any provisions of these requirements are found invalid, the remainder of the requirements shall not be affected.
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10. Operation and Maintenance
The discharger shall, at all times, properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the discharger to achieve compliance with conditions of this Order. Proper operation and maintenance include effective performance, adequate funding, adequate operator staffing and training, and adequate laboratory and process controls including appropriate quality assurance procedures. This provision requires the operation of backup or auxiliary facilities or similar systems only when necessary to achieve compliance with the conditions of this Order. (California Water Code, Section 13263, subdivision (f).)

11. Notification Requirement
Except for a discharge which is in compliance with these waste discharge requirements, any person who, without regard to intent or negligence, causes or permits any hazardous substance or sewage to be discharged in or on any waters of the State, or discharged or deposited where it is, or probably will be, discharged in or on any waters of the State, shall, as soon as (a) that person has knowledge of the discharge, (b) notification is possible, and (c) notification can be provided without substantially impeding cleanup or other emergency measures, immediately notify the Office of Emergency Services of the discharge in accordance with the spill reporting provision of the State toxic disaster contingency plan adopted pursuant to Article 3.7 (commencing with Section 8574.7) of Chapter 7 of Division 1 of Title 2 of the Government Code, and immediately notify the State Board or the appropriate Regional Board of the discharge. This provision does not require reporting of any discharge of less than a reportable quantity as provided for under subdivisions (f) and (g) of Section 13271 of the Water Code unless the discharger is in violation of a prohibition in the applicable Water Quality Control plan. (California Water Code, Section 13271, subdivision (a).)

12. Oil or Petroleum Releases
Except for a discharge which is in compliance with these waste discharge requirements, any person who without regard to intent or negligence, causes or permits any oil or petroleum product to be discharged in or on any waters of the State, or discharged or deposited where it is, or probably will be, discharged in or on any waters of the State, shall, as soon as (a) such person has knowledge of the discharge, (b) notification is possible, and (c) notification can be provided without substantially impeding cleanup or other emergency measures, immediately notify the Office of Emergency Services of the discharge in accordance with the spill reporting provision of the State oil spill contingency plan adopted pursuant to Article

3.5 (commencing with Section 8574.1) of Chapter 7 of Division 1 of Title 2 of the Government Code. This provision does not require reporting of any discharge of less than 42 gallons unless the discharge is also required to be reported pursuant to Section 311 of the Clean Water Act or the discharge is in violation of a prohibition in the applicable Water Quality Control Plan. (California Water Code, Section 13272) 596
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13. Investigations and Inspections
The discharger shall allow the Regional Board, or an authorized representative upon the presentation of credentials and other documents as may be required by law, to:
(a) Enter upon the discharger’s premises where a regulated facility or activity is located or conducted, or where records must be kept under the conditions of this Order;
(b) Have access to and copy, at reasonable times, any records that must be kept under the conditions of this Order;
(c) Inspect at reasonable times any facilities, equipment (including monitoring and control equipment), practices, or operations regulated or required under this Order; and
(d) Sample or monitor at reasonable times, for the purposes of assuring compliance with this Order, or as otherwise authorized by the California Water Code, any substances or parameters at any location. (California Water Code, Section 13267)
(e) Except for material determined to be confidential in accordance with applicable law, all reports prepared in accordance with the terms of this Order shall be available for public inspection at the office of the Los Angeles Water Board.

Data on waste discharges, water quality, geology, and hydrogeology shall not be considered confidential.

14. Monitoring Program and Devices
The discharger shall furnish, under penalty of perjury, technical monitoring program reports; such reports shall be submitted in accordance with specifications prepared by the Executive Officer, which specifications are subject to periodic revisions as may be warranted. (California Water Code, Section 13267) All monitoring instruments and devices used by the discharger to fulfill the prescribed monitoring program shall be properly maintained and calibrated as necessary to ensure their continued accuracy. All flow measurement devices shall be calibrated at least once per year, or more frequently, to ensure continued accuracy of the devices. Annually, the discharger shall submit to the Executive Office a written statement, signed by a registered professional engineer, certifying that all flow measurement devices have been calibrated and will reliably achieve the accuracy required.

The analysis of any material required pursuant to Division 7 of the Water Code shall be performed by a laboratory that has accreditation or certification pursuant to Article 3 (commencing with Section 100825) of Chapter 4 of Part 1 of Division 101 of the Health and Safety Code. However, this requirement does not apply to field tests, such as test for color, odor, turbidity, pH, temperature, dissolved oxygen, 597
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conductivity, and disinfectant residual chlorine. (California Water Code, Section 13176). Unless otherwise permitted by the Regional Board Executive officer, all analyses shall be conducted at a laboratory certified for such analyses by the State Water Resources Control Board’s Division of Drinking Water. All analyses shall be required to be conducted in accordance with the latest edition of “Guidelines Establishing Test Procedures for Analysis of Pollutants” (40 CFR Part 136) promulgated by the United States, Environmental Protection Agency (USEPA). (California Code of Regulation, Title 23, Section 2230) The Quality Assurance-Quality Control Program must conform to the USEPA Guidelines “Laboratory Documentation Requirements for Data Validation”, January 1990, USEPA Region 9) or procedures approved by the Los Angeles Regional Water Quality Control Board.

All quality assurance and quality control (QA/QC) analyses must be run on the same dates when samples were actually analyzed. All QA/QC data shall be reported, along with the sample results to which they apply, including the method, equipment, analytical detection and quantitation limits, the percent recovery, and explanation for any recovery that falls outside the QC limits, the results of equipment and method blanks, the results of spiked and surrogate samples, the frequency of quality control analysis, and the name and qualifications of the person(s) performing the analyses.

Sample results shall be reported unadjusted for lank results or spike recoveries. In cases where contaminants are detected in QA/QC samples (e.g., field, trip, or lab blanks); the accompanying sample results shall be appropriately flagged.

The Discharger shall make all QA/QC data available for inspection by Regional Board staff and submit the QA/QC documentation with its respective quarterly report. Proper chain of custody procedures must be followed and a copy of that documentation shall be submitted with the quarterly report.

15. Treatment Failure
In an enforcement action, it shall not be a defense for the discharger that it would have been necessary to halt or to reduce the permitted activity in order to maintain compliance with this Order. Upon reduction, loss, or failure of the treatment facility, the discharger shall, to the extent necessary to maintain compliance with this Order, control production or all discharges, or both, until the facility is restored or an alternative method of treatment is provided. This provision applies, for example, when the primary source of power of the treatment facility fails, is reduced, or is lost. (California Water Code, Section 13263, subdivision (f).)

16. Discharge to Navigable Waters
A person who discharges pollutants or proposes to discharge pollutants or proposes to discharge pollutants to the navigable waters of the United States within the jurisdiction of this state or a person who discharges dredged or fill material or proposes to discharge dredged or fill material into the navigable waters of the United 598
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States within the jurisdiction of this state shall file a report of waste discharge in compliance with the procedures set forth in Water Code section 13260. (California Water Code, Section 13376)

17. Endangerment to Health and Environment
The discharger shall report any noncompliance which may endanger health or the environment. Any such information shall be provided verbally to the Executive Officer within 24 hours from the time the discharger becomes aware of the circumstances. A written submission shall also be provided within five days of the time the discharger becomes aware of the circumstances. The written submission shall contain a description of the noncompliance and its cause; the period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected; the anticipated time it is expected to continue and steps taken or planned to reduce, eliminate, and prevent recurrence of the noncompliance. The Executive officer, or an authorized representative, may waive the written report on a case-by-case basis if the oral report has been received within 24 hours. The following occurrence(s) must be reported to the Executive Office within 24 hours:
(a) Any bypass from any portion of the treatment facility. (b) Any discharge of treated or untreated wastewater resulting from sewer line breaks, obstruction, surcharge or any other circumstances. (c) Any treatment plan upset which causes the effluent limitation of this Order to be exceeded. (California Water Code, Sections 13263 and 13267)

18. Maintenance of Records
The discharger shall retain records of all monitoring information including all calibration and maintenance records, all original strip chart recordings for continuous monitoring instrumentation, copies off all reports required by this Order, and record of all data used to complete the application for this Order. Records shall be maintained for a minimum of three years from the date of the sample, measurement, report, or application. This period may be extended during the course of any unresolved litigation regarding this discharge or when requested by the Regional Board Executive Officer.

Records of monitoring information shall include:
(a) The date, exact place, and time of sampling or measurement; (b) The individual(s) who performed the sampling or measurement; (c) The date(s) analyses were performed;
(d) The individual(s) who performed the analyses;
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(e) The analytical techniques or method used; and
(f) The results of such analyses.

19. (a) All application reports or information to be submitted to the Executive Office shall be signed and certified as follows:
(1) For a corporation – by a principal executive officer or at least the level of vice president.
(2) For a partnership or sole proprietorship – by a general partner or the proprietor, respectively.
(3) For a municipality, state, federal, or other public agency – by either a principal executive officer or ranking elected official. (b) A duly authorized representative of a person designated in paragraph (a) of this provision may sign documents if:
(1) The authorization is made in writing by a person described in paragraph (a) of this provision.
(2) The authorization specifies either an individual or position having responsibility for the overall operation of the regulated facility or activity; and
(3) The written authorization is submitted to the Executive Officer.

Any person signing a document under this Section shall make the following certification:
“I certify under penalty of law that I have personally examined and am familiar with the information submitted in this document and all attachments and that, based on my inquiry of those individuals immediately responsible for obtaining the information, I believe that the information is true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment. [California Water Code Sections 13263, 13267, and 13268]”

20. Operator Certification
Supervisors and operators of municipal wastewater treatment plants and privately owned facilities regulated by the Public Utilities Commission, used in the treatment or reclamation of sewage and industrial waste shall possess a certificate of appropriate grade in accordance with California Code of Regulations, Title 23, section 3680. State Boards may accept experience in lieu of qualification training. (California Code of Regulations, Title, 23, Sections 3680 and 3680.2.) In lieu of a properly certified wastewater treatment plant operator, the State Board may approve 600
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use of a water treatment plant operator of appropriate grade certified by the State Department of Public Health where reclamation is involved. (California Code of Regulations, Title, 23, Section 3670.1, subdivision (b).)

ADDITIONAL PROVISIONS APPLICABLE TO PUBLICLY OWNED TREATEMENT WORKS’ ADEQUATE CAPACITY

21. Whenever a regional board finds that a publicly owned wastewater treatment plant will reach capacity within four years, the board shall notify the discharger. Such notification shall inform the discharger that the regional board will consider adopting a time schedule order pursuant to Section 13300 of the Water Code or other enforcement order unless the discharger can demonstrate that adequate steps are being taken to address the capacity problem. The notification shall require the discharger to submit a technical report to the regional board within 120 days showing how flow volumes will be prevented from exceeding existing capacity or how capacity will be increased. A copy of such notification shall be sent to appropriate local elected officials, local permitting agencies and the press. The time for filing the required technical report may be extended by the regional board. An extension of 30 days may be granted by the executive officer. Longer extensions may be granted by the regional board itself. (California Code of Regulations, Title, 23, Section 2232.) 601
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Attachment C – Monitoring for Constituents of Emerging Concern (CECs) Table C-1. Health-based and Performance Indicator CECs and Required Reporting Limits [1]
Constituent Constituent Group Reporting Limit
(µg/L)
1,4-Dioxane Industrial chemical 0.1
N-Nitrosodimethylamine
(NDMA) Disinfection byproduct 0.002
N-Nitrosomorpholine
(NMOR) Industrial chemical 0.002
Perfluorooctane sulfonate
(PFOS)
Consumer/industrial
chemical 0.0065
Perfluorooctanoic acid
(PFOA)
Consumer/industrial
chemical 0.007
Sucralose Food additive 0.1
Sulfamethoxazole Antibiotic 0.01
Note: [1] Water Quality Control Policy for Recycled Water (Recycled Water Policy), effective April 8, 2019.
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Attachment D – Monitoring for Priority Pollutants
Acenaphthene
Acrolein
Acrylonitrile
Benzene
Benzidine
Carbon tetrachloride
Chlorobenzene
1,2,4-trichlorobenzene
Hexachlorobenzene
1,2-dichloroethane
1,1,1-trichloreothane
Hexachloroethane
1,1-dichloroethane
1,1,2-trichloroethane
1,1,2,2-tetrachloroethane
Chloroethane
Bis(2-chloroethyl) ether
2-chloroethyl vinyl ethers
2-chloronaphthalene
2,4,6-trichlorophenol
Parachlorometa cresol
Chloroform
2-chlorophenol
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
3,3-dichlorobenzidine
1,1-dichloroethylene
1,2-trans-dichloroethylene
2,4-dichlorophenol
1,2-dichloropropane
1,3-dichloropropylene
2,4-dimethylphenol
2,4-dinitrotoluene
2,6-dinitrotoluene
1,2-diphenylhydrazine
Ethylbenzene
Fluoranthene
4-chlorophenyl phenyl ether
4-bromophenyl phenyl ether
Bis(2-chloroisopropyl) ether
Bis(2-chloroethoxy) methane
Methylene chloride
Methyl chloride
Methyl bromide
Bromoform
Dichlorobromomethane
Chlorodibromomethane
Hexachlorobutadiene
Hexachlorocyclopentadiene
Isophorone
Naphthalene
Nitrobenzene
2-nitrophenol
4-nitrophenol
2,4-dinitrophenol
4,6-dinitro-o-cresol
N-nitrosodimethylamine
N-nitrosodiphenylamine
N-nitrosodi-n-propylamine
Pentachlorophenol
Phenol
Bis(2-ethylhexyl) phthalate
Butyl benzyl phthalate
Di-N-Butyl Phthalate 2
Di-n-octyl phthalate
Diethyl Phthalate
Dimethyl phthalate
Benzo(a) anthracene
Benzo(a) pyrene
Benzo(b) fluoranthene
Benzo(k) fluoranthene
Chrysene
Acenaphthylene
Anthracene
Benzo(ghi) perylene
Fluorene
Phenanthrene
Dibenzo(,h) anthracene
Indeno (1,2,3-cd) pyrene
Pyrene
Tetrachloroethylene
Toluene
Trichloroethylene
Vinyl chloride
Aldrin
Dieldrin
Chlordane
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4,4-DDT
4,4-DDE
4,4-DDD
Alpha-endosulfan
Beta-endosulfan
Endosulfan sulfate
Endrin
Endrin aldehyde
Heptachlor
Heptachlor epoxide
Alpha-BHC
Beta-BHC
Gamma-BHC
Delta-BHC
PCB-1242 (Arochlor 1242)
PCB-1254 (Arochlor 1254)
PCB-1221 (Arochlor 1221)
PCB-1232 (Arochlor 1232)
PCB-1248 (Arochlor 1248)
PCB-1260 (Arochlor 1260)
PCB-1016 (Arochlor 1016)
Toxaphene
Antimony
Arsenic
Asbestos
Beryllium
Cadmium
Chromium
Copper
Cyanide, Total
Lead
Mercury
Nickel Selenium
Silver
Thallium
Zinc
2,3,7,8-TCDD
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E-1 Adopted: February 8, 2018
Amended: May 12, 2022
Attachment E
MONITORING AND REPORTING PROGRAM NO. CI-9259
FOR

CITY OF SANTA PAULA
(SANTA PAULA WATER RECYCLING FACILITY)
(File No. 06-189)
This Monitoring and Reporting Program (MRP) No. CI-9259 is issued pursuant to California Water Code section 13267, which authorizes the Regional Water Quality Control Board, Los Angeles Region (Regional Board) to require the City of Santa Paula (City), who discharges tertiary-treated wastewater generated from the Santa Paula Water Recycling Facility (SPWRF) to groundwater via three percolation ponds, to furnish technical or monitoring reports.

The reports required herein are necessary to:
· Determine compliance with Waste Discharge Requirements (WDRs) Order No. R4- 2018-0022 and assure protection of the waters of the state and their beneficial uses. · Assess treatment plant performance, identify operational problems, and improve plant performance.
· Assess effectiveness of the City’s Pretreatment Program. · Provide information on wastewater characteristics and flows for use in interpreting water quality and biological data.
· Determine total maximum daily load (TMDL) effectiveness.

The evidence that supports the need for the reports is set forth in the WDRs and the Regional Board record.

I. SUBMITTAL OF REPORTS
A. The City shall comply with the Electronic Submittal of Information (ESI) requirements by submitting all reports required under this MRP, including electronic data format (EDF) groundwater and surface water monitoring data, injection location data, and monitoring reports. These reports shall be received by the Regional Board via the State Water Resources Control Board’s (State Water Board) GeoTracker database under Global ID WDR100000849 on the dates indicated as follows:

1. Quarterly Monitoring Reports shall be received by the Regional Board by the 30th day of the month following the end of each quarterly monitoring period according to Table 1 below. The first Quarterly Monitoring Report 605
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under this program must be received by the Regional Board by April 30, 2018.

Table 1. Reporting Period and Due
Reporting Period Report Due
January – March April 30
April – June July 30
July – September October 30
October - December January 30

2. Annual Summary Report shall be received by the Regional Board by March 1 of each year. The first Annual Summary Report under this program must be received by the Regional Board no later than March 1, 2018.

B. If there is no discharge during any reporting period, the report shall still be submitted and so state.

C. Data collected from monitoring wells shall be included in the quarterly monitoring reports and annual summary report. The data shall include the well specifications, ordinances, well heads elevation to mean sea level (MSL) and the method to develop the well. The California Department of Water Resources sets standards for the construction of groundwater wells, as described in California Well Standards Bulletin 74-90 (June 1991) and Water Well Standards: State of California Bulletin 74-81 (December 1981). These well standards, and any more stringent standards adopted by the state or county pursuant to Water Code section 13801, apply to all monitoring wells used to monitor the impacts of wastewater storage or disposal governed by waste discharge or monitoring and reporting requirements.

D. In accordance with California Business and Profession Code sections 6735, 7835, and 7835.1, engineering and geologic evaluations and judgments shall be performed by or under the direction of registered professionals competent and proficient in the fields pertinent to the required activities. All reports submitted to the Regional Board pursuant to waste discharge or monitoring and reporting requirements that contain work plans for investigations and studies, that describe the conduct of investigations and studies, or that contain technical conclusions and recommendations concerning engineering and geology shall be prepared by or under the direction of appropriately qualified professional(s), such a licensed engineer or a certified hydrogeologist in the State of California, even if not explicitly stated. Each report must submitted by the Discharger shall bear the professional’s signature and stamp.

E. All monitoring reports must include, at minimum, the following:
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1. Well or location identification, date and time of sampling;

2. Sampler identification, laboratory identification, and chain of custody;

3. Quarterly observation of groundwater levels, recorded to 0.01 feet mean sea level (MSL), and flow direction; and

4. Calculation of vertical separation of the water table from the bottom of the disposal system.

II. MONITORING REQUIREMENTS
A. Monitoring shall be used to determine compliance with waste discharge requirements and shall include, but is not limited to, implementation and documentation of the following:

1. Locations of each groundwater well where representative samples can be obtained and the rationale for the selection. The City must include a map, at a scale of 1 inch equals 1,200 feet or less, that clearly identifies the locations of the SPWRF, and all groundwater monitoring wells.

2. Sampling protocols (specified in 40 C.F.R. Part 136 or American Water Works Association standards where appropriate) and chain of custody procedures.

3. For groundwater monitoring, outline the methods and procedures to be used for measuring water levels; purging wells; collecting samples; decontaminating equipment; containing, preserving, and shipping samples; and maintaining appropriate documentation. Also include the procedures for handling, storing, testing, and disposing of purge and decontamination waters generated from the sampling events.

4. Laboratory or laboratories, which conducted the analyses. Include copy or copies of laboratory certifications by the Environmental Laboratory Accreditation Program (ELAP) of the State Water Board’s Division of Drinking Water (DDW) every year or when the City changes their contract laboratory.

5. Analytical test methods used and the corresponding Detection Limits for Purposes of Reporting (DLR) for unregulated and regulated chemicals.

Please see the DDW’s website at
http://www.waterboards.ca.gov/drinking_water/certlic/drinkingwater/EDT.shtml for unregulated and regulated chemicals.

6. Quality assurance and control measures.

B. The samples shall be analyzed using analytical methods described in 40 C.F.R.

Part 136; or where no methods are specified for a given pollutant, by 607
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commercially available methods approved by the United State Environmental Protection Agency (USEPA) or DDW, Regional Board and/or State Board. The City shall select the analytical methods that provide reporting detection limits (RDLs) lower than the limits prescribed in waste discharge requirements.

C. The City shall instruct its laboratories to establish calibration standards so that the RDLs (or its equivalent if there is a different treatment of samples relative to calibration standards) are the lowest calibration standard. At no time shall the City use analytical data derived from extrapolation beyond the lowest point of the calibration curve.

D. Upon request by the City, the Regional Board, in consultation with the USEPA or DDW and the State Board Quality Assurance Program, may establish RDLs in any of the following situations:

1. When the pollutant has no established method under 40 C.F.R. Part 136 (revised May 14, 1999, or subsequent revision);

2. When the method under 40 C.F.R. Part 136 for the pollutant has a RDL higher than the limit specified in this Order; or

3. When the City agrees to use a test method that is more sensitive than those specified in 40 C.F.R. Part 136 and is commercially available.

E. Samples of influent and disinfected effluent must be analyzed within allowable holding time limits as specified in 40 C.F.R. section 136.3. All quality assurance/quality control (QA/QC) analyses must be run on the same dates when samples were actually analyzed. The City shall make available for inspection and/or submit the QA/QC documentation upon request by the Regional Board. Proper chain of custody procedures must be followed and a copy of that documentation shall be submitted with the quarterly monitoring report.

F. Constituents of emerging concern (CECs): In recent years, the Regional Board has required monitoring of a select group of anthropogenic chemicals, particularly pesticides, pharmaceuticals and personal care products, known collectively as CECs, into monitoring and program requirements to better understand the propensity, persistence and effects of CECs in our environment. Recently adopted permits in this region contain requirements for CEC effluent monitoring, including identification of the CECs to be monitored in the effluent, sample type, sampling frequency, and sampling methodology.

1. The City shall monitor a selective list of CECs identified in Attachment C in the SPWRF’s effluent discharge and in the groundwater. The reporting limits in Attachment C shall be used for these constituents.

2. The City shall select methods according to the following approach:
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i. Use USEPA drinking water methods, if available;
ii. Use DDW-recommended methods for CECs, if available; iii. If there is no DDW-recommended drinking water method for a chemical, and more than a single USEPA-approved method is available, use the most sensitive USEPA-approved method; iv. If there is no USEPA-approved method for a chemical, and more than one method is available from the scientific literature and commercial laboratory, after consultation with DDW, use the most sensitive method; or
v. If no approved method is available for a specific chemical, the City’s laboratory may develop or use its own methods and should provide the analytical methods to DDW or the Regional Board for review and approval. Those methods may be used until DDW-recommended or USEPA-approved methods are available.
vi. In the event that subsections II.F.2.i. or II.F.2.v. are applicable, the City shall inform the Regional Board.

3. CECs identified in Attachment C shall be monitored once within six months from the effective date of this Order (by May 2, 2018) and once every five years thereafter. The Regional Board Executive Officer may add or delete chemicals from Attachment C as new analytical methods become available and may also make revisions to approved analytical methods as needed. A revised CECs list will be made available to the City when changes occur. The City shall request (and submit a justification for) any deviation from the attached list for Executive Officer approval, if a change is required, before collecting samples.

4. Monitoring results shall be reported as part of the annual report. Analysis under this section is for monitoring purposes only as there are currently no standards for these constituents.

III. REPORTING REQUIREMENTS
The City shall submit all reports to the Regional Board by the dates indicated in Section I. All quarterly and annual reports shall clearly list all non-compliance with WDRs, as well as all excursions of effluent limits. All quarterly and annual monitoring reports shall contain a separate section titled “Summary of Non-Compliance”, which discusses the compliance records and corrective actions taken or planned that may be needed to bring the discharge into full compliance with WDRs. 609
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A. Quarterly Monitoring Reports

1. These reports shall include, at a minimum, the following information:
i. The volume of the effluent used for land disposal via percolation. ii. The date and time of sampling and analyses on the influent, effluent, and groundwater.
iii. All analytical results of samples collected during the monitoring period of the influent, effluent, and groundwater.
iv. Documentation of all QA/QC procedures that were followed during sampling and laboratory analyses.
v. Records of any operational problems, plant upset and equipment breakdowns or malfunctions, and any discharge(s) used for land disposal via percolation.
vi. Discussion of compliance, non-compliance, or violation of waste discharge requirements.
vii. All corrective and/or preventive action(s) taken or planned with schedule of implementation, if any violation occurs.

2. For the purpose of reporting compliance with numerical limitations, analytical data shall be reported using the following reporting protocols:
i. Sample results greater than or equal to the RDL must be reported “as measured” by the laboratory (i.e., the measured chemical concentration in the sample);
ii. Sample results less than the RDL, but greater than or equal to the laboratory’s method detection limit (MDL), must be reported as “Detected, but Not Quantified” (DNQ). The laboratory must write the estimated chemical concentration of the sample next to DNQ as well as the words “Estimated Concentration” (may be shortened to Est.

Conc.); or
iii. Sample results less than the laboratory’s MDL must be reported as “None-Detected” (ND).

3. If the City samples and performs analyses (other than for process/operational control, startup, research, or equipment testing) on any sample more frequently than required in this MRP using approved analytical methods, the results of those analyses shall be included in the report. These results shall be included in the calculation of the average 610
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used in demonstrating compliance with average effluent limits, receiving groundwater limits, etc.

4. The Regional Board may request supporting documentation, such as daily logs of operations.

B. Annual Summary Reports
These reports shall include, at a minimum, the following information:

1. Tabular and graphical summaries of the monitoring data (quality of influent, effluent, and groundwater; quantity of influent and effluent to percolation ponds,) obtained during the previous calendar year. A comparison of laboratory results against effluent limits contained in these WDRs and notations of any exceedances of limits or other requirements shall be summarized and submitted at the beginning of the report.

2. Discussion of the compliance record and corrective and/or preventive action(s) taken or planned that may be needed to bring the treated effluent, including the treated effluent used for recycled water, into full compliance with the requirements in the WDRs.

3. An in-depth discussion of the results of the final effluent monitoring and groundwater monitoring conducted during the previous year includes:
i. Any change of receiving groundwater resulting from effluent discharges at percolation ponds; and
ii. Any change of groundwater flow pattern resulting from discharge via percolation ponds.

Temporal and spatial trends in the data shall be analyzed, with particular reference to comparisons between stations with respect to distances from the monitoring wells and comparisons to data collected during previous years. Appropriate statistical tests and indices, subject to approval by the Regional Board Executive Officer, shall be calculated and included in the annual report.

4. The description of any changes and anticipated changes including any impacts in operation of any unit processes or facilities shall be provided.

5. A list of the analytical methods employed for each test and associated laboratory QA/QC procedures shall be included. The report shall restate the laboratories used by the City to monitor compliance with the accompanying Order, their status of certification, and provide a summary of analyses.
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6. The report shall confirm operator certification and provide a list of current operating personnel, their responsibilities, and their corresponding grade of certification.

7. The report shall also summarize any change of the Operation, Maintenance, and Monitoring Plan (OMM Plan) due to the optimization of the existing SPWRF operation. The summary shall discuss conformance with the SPWRF's OMM Plan for operations, maintenance, and monitoring of the SPWRF, and whether the OMM Plan requires revision for the current facilities.

IV. WATER QUALITY MONITORING REQUIREMENTS
A. Influent Monitoring

1. The City shall monitor influent to the SPWRF at Influent Pump Station located in the main stream of the influent channel prior to the headworks as specified in Table 2 below.

Table 2. Influent Monitoring
Constituents Units[1] Type of Sample Minimum Frequency of Analysis
Total waste flow gpd Recorder Continuous[2]
BOD5@20o
C mg/L Grab Monthly
Total suspended solids mg/L Grab Monthly
Chloride mg/L 24-hour composite Monthly
Sulfate mg/L Grab Monthly
Boron mg/L Grab Monthly
Total dissolved solids mg/L Grab Monthly
Metals[3] µg/L Grab Quarterly
Table nots: [1] gpd: gallons per day; mg/L: milligrams per liter; µg/L: micrograms per liter [2] The City shall report the daily minimum, maximum, and average values. [3] Metals include antimony, arsenic, beryllium, cadmium, chromium, copper, lead, mercury, nickel, selenium, silver, thallium, and zinc.

B. Effluent Monitoring

1. The City shall monitor its discharge of tertiary-treated effluent at downstream of all treated effluent passing through the effluent sampling station, including the final disinfection process.
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2. The following shall constitute the effluent monitoring program, specified in Table 3 below:

Table 3. Effluent Monitoring
Constituent Unit[1] Type of Sample[2] Minimum Frequency of Analysis
Total flow gpd Recorder Continuous
[3]
UV mW-s/cm2 Recorder Continuous[3]
Turbidity NTU Recorder Continuous[3][4]
pH pH units Grab Daily
Fecal coliform MPN/100mL Grab Daily
Total coliform MPN/100mL Grab Daily
Enterococcus MPN/100mL Grab Weekly
Total suspended solids mg/L 24-hour composite Monthly
BOD5@20o
C mg/L 24-hour composite Monthly
Oil and grease mg/L Grab Monthly
Ammonia as nitrogen mg/L Grab Monthly
Nitrate as nitrogen mg/L Grab Monthly
Nitrite as nitrogen mg/L Grab Monthly
Organic nitrogen mg/L Grab Monthly
Residual chlorine mg/L Grab Monthly
Total dissolved solids mg/L Grab Monthly
Sulfate mg/L Grab Monthly
Chloride mg/L Grab Weekly
Boron mg/L Grab Monthly
MBAS[5] mg/L Grab Quarterly
CTAS[6] mg/L Grab Quarterly
Total hardness mg/L 24-hour composite Quarterly
Total phosphorus mg/L 24-hour composite Quarterly
Constituents listed in
Attachment A-1 to A-6
various Grab/24-hour
composite Quarterly
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Constituent Unit[1] Type of Sample[2] Minimum Frequency of Analysis
CECs in Attachment C various Grab
Once within 6 months
and every 5 years
thereafter[7]
Remaining priority
pollutants in Attachment D µg/L Grab/24-hour composite Annually Table notes: [1] NTU: Nephelometric turbidity unit; mW-s/cm2:milli-watts seconds per square centimeter; MPN/100mL: most probable number per 100 milliliter; µg/L: micrograms per liter
[2] Grab sample is an individual sample collected in a short period of time not exceeding 15 minutes. Grab samples shall be collected during normal peak loading conditions for the parameter of interest, which may or may not be during hydraulic peaks. When an automatic composite sampler is not used, composite sampling shall be done as follows. If the duration of the discharge is equal to or less than 24 hours but greater than eight (8) hours, at least eight (8) flow-weighted samples shall be obtained during the discharge period and composited. For discharge duration of less than eight (8) hours, individual “grab” sample may be substituted. 24-hour composite is for semi-volatile and volatile chemicals.
[3] The City shall report the daily minimum, maximum, and average values. [4] In the event the continuous turbidity meter and recorder fail, grab sampling may be substituted for a period of up to 24 hours. The turbidity samples must be taken at intervals of no more than 1.2 hours over a 24- hour period to determine compliance for turbidity.
[5] MBAS: Methylene Blue Active Substances
[6] CTAS: Cobalt Thiocyanate Active Substances
[7] CECs shall be monitored once within six months from the effective date of this Order (by May 2, 2018) and once every five years thereafter.

C. Groundwater Monitoring

1. The City shall monitor the groundwater at and surrounding the SPWRF to assess the water quality impact of the SPWRF’s discharges to groundwater.

2. The City shall continue to conduct groundwater monitoring from all existing wells, including MW-1, MW-2a, MW-3, MW-4, MW-5, MW-6, MW-7a, MW8, and MW-9 until such time as the City’s work plan proposing a modified groundwater monitoring network, described in Section IV.C.3 below, is approved by the Executive Officer and is implemented by the City.

3. By May 1, 2018, the City shall submit to the Regional Board a work plan proposing a modified groundwater monitoring network for compliance determination with the groundwater limitations. The proposed 614
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groundwater monitoring network shall include groundwater monitoring wells upgradient, cross gradient, and downgradient to the percolation pond. In addition to installation of new wells, the City may propose continuing to use some or all of the existing groundwater monitoring wells (MW-1, MW-2a, MW-3, MW-4, MW-5, MW-6, MW-7a, MW-8, and MW-9).

For compliance determination with the groundwater limitation for chloride, the City’s proposed modified groundwater monitoring network shall include wells at approximately 150 feet downgradient from the percolation pond. The work plan shall be submitted to the Regional Board for the Executive Officer’s review and approval. If the City proposes to use existing wells (such as water supply or irrigation wells) not owned by the City, or proposes to install new wells on property not owned by the City, the City shall include as part of its work plan any access agreements between the City and property owner(s) to use and/or install groundwater wells on non-City-owned property. The City shall implement the work plan, by completing installation of any new wells and commencing monitoring from them, within 60 days after the Executive Officer’s approval.

4. The required groundwater monitoring of constituents/parameter with sample type and frequencies is specified in Table 4 below.

Table 4. Groundwater Monitoring
Constituents Units Type of Sample Minimum Frequency
of Analysis[2]
Water level elevation[1] feet Recorder Monthly
pH pH units Grab Monthly
Total coliform MPN/100mL Grab Monthly
Fecal coliform MPN/100mL Grab Monthly
Enterococcus MPN/100mL Grab Monthly
Ammonia as nitrogen mg/L Grab Monthly
Nitrate as nitrogen mg/L Grab Monthly
Nitrite as nitrogen mg/L Grab Monthly
Organic nitrogen mg/L Grab Monthly
Total dissolved solids mg/L Grab Monthly
Sulfate mg/L Grab Monthly
Chloride mg/L Grab Monthly
Boron mg/L Grab Monthly
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Constituents Units Type of Sample Minimum Frequency
of Analysis[2]
Constituents listed in
Attachments A-1 to A-5
various Grab Annually
CECs in Attachment C µg/L Grab
Once within 6 months
and every 5 years
thereafter
Remaining priority
pollutants in Attachment D µg/L Grab Annually
Table notes: [1] Annual samples shall be collected during the dry season each year. [2] Water level elevations must be measured to the nearest 0.01 feet, and referenced to mean sea level.

D. Monitoring of Effluent Flow to Percolation Ponds
The City shall record the volume in gallons per day (GPD) of treated wastewater discharged to the three percolation ponds. This information shall be submitted as part of the quarterly monitoring reports.

V. GENERAL MONITORING AND REPORTING REQUIREMENTS
A. The City shall comply with all Standard Provisions (Attachment B) related to monitoring, reporting, and recordkeeping.

B. For every requirement not met, the City shall submit a statement of the actions undertaken or proposed that will bring the treated effluent into full compliance with requirements at the earliest possible time, and submit a timetable for implementation of the corrective measures.

C. Monitoring reports shall be signed by either the principal Executive Officer or ranking elected official. A duly authorized representative of the aforementioned signatories may sign documents if:

1. The authorization is made in writing by the signatory;

2. The authorization specifies the representative as either an individual or position having responsibility for the overall operation of the regulated facility or activity; and

3. The written authorization is submitted to the Regional Board Executive Officer.

D. The monitoring report shall contain the following completed declaration:
“I certify under penalty of law that this document, including all attachments and supplemental information, was prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly 616
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gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of a fine and imprisonment.”
Executed on the ___ day of _____ at ______
______________________ Signature
______________________ Title
E. The City shall retain records of all monitoring information, including all calibration and maintenance, monitoring instrumentation, and copies of all reports required by this Order, for a period of at least three (3) years from the date of sampling measurement, or report. This period may be extended by request of the Regional Board at any time and shall be extended during the course of any unresolved administrative proceeding or judicial litigation regarding the regulated activity.

F. Records of monitoring information shall include:

1. The date, exact place, and time of sampling or measurements;

2. The individual(s) who performed the sampling or measurements;

3. The date(s) analyses were performed;

4. The individual(s) who performed the analysis;

5. The analytical techniques or methods used; and

6. The results of such analyses.

G. The City shall submit to the Regional Board, together with the first monitoring report required by this Order, a list of all chemicals and proprietary additives that could affect the quality of the treated effluent. Any subsequent changes in types and/or quantities shall be reported promptly. An annual summary of the quantities of all chemicals, listed by both trade and chemical names that are used in the treatment process shall be included in the annual report.

VI. WASTE HAULING REPORTING
In the event that waste sludge, septage, or other wastes are hauled offsite, the name and address of the hauler shall be reported, along with types and quantities hauled during the reporting period and the location of final point of disposal. In the event that 617
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no wastes are hauled during the reporting period, a statement to that effect shall be submitted in the quarterly monitoring report.

VII. PRETREATMENT REPORTING
The City shall submit annual reports to the Regional Board, with copies to the State Board, and USEPA Region 9, describing the City's pretreatment activities over the period.

A. The annual reports shall identify:

1. All significant industrial users (SIUs) that violated any standards or reporting requirements during that year;

2. The violations committed;

3. The enforcement actions undertaken; and

4. The status of active enforcement actions from previous periods, including closeouts (facilities under previous enforcement actions that attained compliance during the quarter).

B. By March 1 of each year, beginning January 1, 2018, the City shall submit an annual summary report to the Regional Board describing the pretreatment activities within the service area during the previous year. In the event that any control authority within the service area is not in compliance with any conditions or requirements of this Order or their approved pretreatment program (such as due to industrial user discharges, interjurisdictional agency agreement implementation issues, or other causes,) then the City shall also include the reasons for noncompliance and state how and when the City and the control authority shall comply with such conditions and requirements. The report shall contain, but not be limited to, the following information:

1. A summary of analytical results from representative, flow-proportioned, 24-hour composite sampling of the SPWRF's influent and effluent wastewaters for those pollutants that are known or suspected to be discharged by industrial users (IUs) as identified by the pretreatment program.

2. The summary shall include the result of annual full priority pollutant scan, with quarterly samples analyzed only for those pollutants detected in the full scan.

3. The City shall also provide any influent or effluent monitoring data for nonpriority pollutants that the City believes may be causing or contributing to Interference, Pass Through or adversely impacting sludge quality. 618
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4. Sampling and analysis shall be performed in accordance with the techniques prescribed in pretreatment program and amendments thereto.

5. A discussion of any upset, interference, or pass-through incidents at the treatment plant (if any), which the City knows or suspects were caused by IUs of the SPWRF system. The discussion shall include the following:
i. The reasons why the incidents occurred, the corrective actions taken, and, if known, the name and address of the IU(s) responsible. ii. A review of the applicable pollutant limitations to determine whether any additional limitations, or changes to existing requirements, may be necessary to prevent pass through, interference or
noncompliance with sludge disposal requirements, if any.

6. A complete and updated list of the City's significant industrial users (SIUs), including names, Standard Industrial Classification code(s) and addresses, and a list of any SIU deletions and/or additions.

7. The City shall provide a brief explanation for each deletion. The SIU list shall identify the SlUs equivalent to Federal Categorical Standards by specifying which standards are applicable to each SIU. The list shall also indicate which SlUs are subject to local limitations and those that are not subject to local limits.

8. A list or table characterizing the industrial compliance status of each SIU, including:
i. SIU name and address;
ii. Industrial category;
iii. The type (processes) of wastewater treatment in place; iv. Number of samples taken by the SPWRF during the year; v. Number of samples taken by the SIU during the year;
vi. Whether all needed certifications (if allowed) were provided by SlUs that have limits for total toxic organics;
vii. Regional Standards violated during the year, reported separately; viii. whether the SIU at any time in the year was in Significant Noncompliance (SNC), equivalent to that defined in 40 C.F.R. section 403.12(f)(2)(vii);
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ix A summary of enforcement actions against the SIU taken during the year, including the type of action, final compliance date, and amount of fines assessed/collected (if any). Proposed actions, if known, should be included; and
x. Number of inspections conducted at each SIU during the year.

9. A compliance summary table that includes:
i. SIU's which were in SNC at any time during the year; ii. The total number of SlUs that are in SNC with pretreatment, compliance schedules during the year; and
iii. The total number of notices of violation and administrative orders issued against SlUs during the year:
a. The total number of civil and criminal judicial actions filed against SlUs during the year;
b. The number of SlUs that were published as being in SNC during the year; and
c. The number of IUs from which penalties were collected during the year.

10. A short description of any significant changes in operating the pretreatment program that differ from the previous year including, but not limited to changes concerning:
i. The program's administrative structure;
ii. Local industrial discharge limitations;
iii. Monitoring program or monitoring frequencies;
iv. Legal authority or enforcement policy;
v. Funding mechanisms; and
vi. Resource requirements and/or staffing levels.

11. A summary of the annual pretreatment budget, including the cost of pretreatment program functions and equipment purchases.

12. A summary of public participation activities to involve and inform the public.
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13. A description of any changes in sludge disposal methods and a discussion of any concerns not described elsewhere in the report.

14. The cumulative number of industrial users that the City has notified regarding Baseline Monitoring Reports and the cumulative number of industrial user responses.

15. The City shall submit the quarterly compliance status reports and the annual pretreatment report to the Regional Board.

VIII. MONITORING FREQUENCIES
The Regional Board Executive Officer is delegated authority to revise this Monitoring and Reporting Program, including monitoring frequencies and parameters. The City may make a request (with justification) to reduce the monitoring frequency or to modify the list of monitoring constituents. The City shall not make any adjustment until the Executive Officer provides written approval after determining that the request is adequately justified.
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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD

LOS ANGELES REGION
320 West 4th Street, Suite 200, Los Angeles, California 90013 (213) 576-6600 • Fax (213) 576-6640
https://www.waterboards.ca.gov/losangeles/
Adopted: February 8, 2018
Amended: May 12, 2022
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CEASE AND DESIST ORDER
FOR

CITY OF SANTA PAULA
ORDER NO. R4-2018-0023, AS AMENDED BY
ORDER NO. R4-2018-0023-A01
(SANTA PAULA WATER RECYCLING FACILITY)
(FILE NO. 16-189)

REQUIRING CITY OF SANTA PAULA

TO UNDERTAKE ACTIONS TOWARD COMPLIANCE WITH

CHLORIDE REQUIREMENTS IN WASTE DISCHARGE REQUIREMENTS FOR

DISCHARGES FROM SANTA PAULA WATER RECYCLING FACILITY
The California Regional Water Quality Control Board, Los Angeles Region (Regional Water Board) finds:

1. The City of Santa Paula (City or Discharger) is the owner of the Santa Paula Water Recycling Facility (SPWRF), a Publicly-Owned Treatment Works (POTW), located at 920 Corporation Street in Santa Paula, California. The SPWRF is operated by Ventura Regional Sanitation District and discharges tertiary-treated wastewater to groundwater via three percolation ponds adjacent to the facility.

2. The SPWRF treats wastewater generated within the City and is designed for a flow of 4.2 million gallons per day (MGD). Based on the discharge records between July 2010 and June 2017, the monthly average effluent discharged from the SPWRF ranged between 1.36 and 2.44 MGD, with an average of 1.86 MGD.

3. The wastewater treatment process at the SPWRF consists of preliminary treatment (coarse and fine mechanical screening and grit removal at the Influent Lift Station), flow equalization (two flow equalization tanks), secondary treatment (three aeration tanks with nitrification and denitrification activated sludge), tertiary treatment (six biomembrane reactors, providing further carbonaceous oxidation, nitrification/denitrification and solids removal to meet the limits of the WDRs), and disinfection (UV). Treated and disinfected effluent is discharged to three percolation ponds. The returned activated sludge is treated at two of three aerobic digesters (one aerobic digester is for backup) after being thickened at two thickeners. The solids generated at the aerobic digesters receive final dewatering at the screw dewatering press. Final solids meeting the United States Environmental Protection Agency (USEPA) Class B reuse standards are sent to the Ventura County Regional Bio-Solids facility.

4. The SPWRF is able to meet all final effluent limitations in the City's waste discharge requirements (WDRs) except for chloride. This is due to the SPWRF not being 622
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designed to remove chloride. Since the SPWRF has no ability to remove chloride, chloride is passed through to the effluent and then groundwater via discharges to the percolation pond. Noncompliance with chloride effluent and groundwater limitations is the most problematic issue with the SPWRF. Table 1 summarizes the chloride concentrations of effluent discharged from the SPWRF.

Table 1. Annual Average Chloride Concentrations[1] (milligrams per liter, mg/L) in SPWRF Effluent
Period Effluent of SPWRF
2010 156
2011 153
2012 149
2013 155
2014 145
2015 134
2016 137
2017 131
2018 121
2019 120
2020 118.88
2021 112
Range[2] 135.99 ± 15.61
Table 1 notes:
[1] All data were collected from grab samples.
[2] Data range is based on one standard deviation.

A. The monthly effluent chloride concentration ranged from 125 to 166 mg/L between July 2010 and June 2017, which continuously exceeded the chloride effluent limitation of 110 mg/L. This has led to an escalation of the chloride concentrations in groundwater below and surrounding the three percolation ponds with a range of 121 to 168 mg/L and an average of 140 mg/L since July 2010. The groundwater and effluent data indicate that the chloride discharges from the SPWRF have impacted the receiving groundwater quality in the vicinity of the SPWRF.

B. The elevated chloride concentrations in the effluent were believed to be associated with the approximately 1,250 Self-Regenerating Water Softeners (SRWS) installed in the households of the City. These SRWS generate brine 623
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containing elevated chloride concentrations, which are discharged to sewers and delivered to the SPWRF as influent.

C. According to the effluent data collected between October 2015 and June 2017, a total of 2,479 pounds/day (lbs/day) of chloride, based on the effluent flow rate of 2.2 MGD [95 percentile of monthly average effluent flows, resulting from data recorded between October 2015 (beginning of the SRWS Buyback Program) and June 2017] and a chloride effluent concentration of 135 mg/L, were discharged to the groundwater underlying the percolation pond.

D. The chloride interim effluent limit of 1,983 lbs/day was exceeded twice between 2018 and 2021: 2,040 lbs/day in February 2021, calculated from February 8, 2021 through March 7, 2021, and 2,030 lbs/day in March 2021, calculated from March 8, 2021 through April 7, 2021.

E. The chloride interim groundwater limitation was exceeded at downgradient wells AW01 in July 2018 and at AW03 in August 2020.

5. The Regional Water Board issued three Notices of Violation (NOVs), described below, to the City for exceedances of the chloride effluent and groundwater limitations in Order No. R4-2007-0028. These NOVs required the City to implement corrective and preventative actions to bring the City's discharge into full compliance with chloride effluent limitations and receiving water requirements specified in Order No. R4-2007-0028, previously adopted by this Regional Water Board on May 3, 2007.

A. The November 3, 2011 NOV summarized chloride limit exceedances between the second quarter of 2010 and the third quarter of 2011. These violations included 15 exceedances of chloride and one exceedance of total nitrogen, di(2-ethyl)phthalate, and dioxin in effluent; and 1 exceedance of sulfate, 5 exceedances of chromium, 10 exceedances of aluminum, 1 exceedance of nickel and boron and nitrate plus nitrite, and 26 chloride exceedances of groundwater limitations.

B. The December 30, 2014 NOV summarized 36 and 88 chloride exceedances in effluent and groundwater, respectively, between the fourth quarter of 2011 and the third quarter of 2014.

C. The March 20, 2017 NOV summarized 27 and 50 chloride exceedances in effluent and groundwater, respectively, between the fourth quarter of 2011 and the fourth quarter of 2016.

6. The City's efforts to reduce the chloride concentration in the influent to the SPWRF are summarized below:
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A. The City identified that the influent to the SPWRF contains brine with elevated chloride concentration from Self-Regenerating Water Softeners (SRWS).

There are approximately 1,250 residential SRWS used in the City.

B. On September 5, 2006, the City established Ordinance No. 1160 prohibiting the installation or replacement of residential SRWS.

7. To address the City's chloride exceedances in the effluent and groundwater, the Regional Water Board required the City to submit a Chloride Reduction Workplan.

Board staff also met with the City on several occasions to discuss the City's chloride exceedances. A summary of these events are as follows:

A. On December 19, 2013 and May 11, 2015, the Regional Water Board met with the City to discuss its Chloride Reduction Workplan. The City's Chloride Reduction Workplan includes the following tasks:
i. Prohibit SRWS installations or replacements;
ii. Implement a SRWS Buyback Program;
iii. Implement a Recycled Water Program to reduce effluent discharged to the three percolation ponds; and
iv. Implement Supplemental Strategies, if needed, including advanced treatment (e.g., reverse osmosis) and disposal of brine.

B. On January 28, 2016, Regional Water Board staff discussed with the City the necessary actions to reduce the chloride concentration in the effluent, which included the SRWS Buyback Program. The City also proposed to explore application of recycled water at locations other than identified groundwater hot spots and to conduct groundwater impact investigation and remediation activities. The City was notified that detailed schedules and milestones were required for all actions.

C. On March 8, 2016 and September 14, 2016, the City met with Regional Water Board staff to provide an update of its SRWS Buyback Program efforts. The City noted that five City employees were deployed to conduct door-to-door visits to encourage participation in the SRWS Buyback Program among 7,500 dwellings within the City.
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D. On October 31, 2016, the City met with Regional Water Board staff to provide an update on the following topics:
i. Status of implementing the chloride compliance strategy and potential for reduction of effluent discharged to the three percolation ponds via the City's Recycled Water Program;
ii. Assimilative capacities for chloride at different groundwater locations beneath the City based on the Salt and Nutrient Management Plan for the Lower Santa Clara River Basin; and
iii. Groundwater hot spots (i.e., chloride impaired areas with no assimilative capacity for recycled water applications) in the City.

E. On May 1, 2018, the City submitted the Self-Regenerating Water Softener Buyback Program Evaluation Report to comply with CDO requirements. The report concluded that the Buyback Program is partially effective in reducing chloride loadings to the SPWRF, but the estimated reduction in the chloride concentration in the effluent has not been met.

F. On January 30, 2019, the City submitted the Recycled Water Project Layout Report to identify potential recycled water opportunities, conduct outreach to potential recycled water users, and draft conceptual recycled water projects and evaluate them. During the process, the City met with potential project partners and interested parties to discuss opportunities, project components, design criteria, and project feasibility. However, the City was unable to accomplish the recycled water project due to an incompatibility in schedules between the City and potential recycled water partners.

G. On September 20, 2019, the City submitted the Alternative Effluent Chloride Mitigation Workplan to request a Basin Plan amendment to adopt a site-specific groundwater quality objective for chloride after discussions on January 30, 2019 and June 27, 2019.

H. On February 28, 2020, the Regional Water Board provided comments on the Alternative Effluent Chloride Mitigation Workplan. The comments required the City to provide supporting information regarding a site-specific chloride groundwater quality objective that would be protective of beneficial uses for agricultural water supply for salt sensitive crops.

I. On April 15, 2020, the City notified the Regional Water Board of its modified approach to upgrade the SPWRF with reverse osmosis (RO), in lieu of the proposed recycled water project, to reduce chloride concentrations in the treated effluent to meet the permit requirements.
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J. On July 13, 2020, the City requested development of a site-specific groundwater quality objective for chloride of 117 mg/L as a Basin Plan amendment to reduce the cost of the RO implementation.

K. On December 1, 2021, the City and Regional Water Board staff discussed the progress of the RO plant development and the requested Basin Plan amendment. The City decided to implement the advanced wastewater treatment system with RO based on the existing groundwater quality objective for chloride of 110 mg/L.

8. On July 9, 2015, the Regional Water Board adopted Resolution No. R15-007, an amendment to the Basin Plan that incorporated stakeholder-developed groundwater quality management plan for salts and nutrients in the Lower Santa Clara River groundwater basins. Groundwater quality management measures were developed by stakeholders as part of the Salt and Nutrient Management Plan (SNMP) for the Lower Santa Clara River Basins in Ventura County. Such plans are a requirement of the State Water Resources Control Board's (State Water Board) Recycled Water Policy and are intended to maintain high quality waters and to protect the beneficial uses of groundwater while promoting recycled water use throughout the state. The SNMP utilized a groundwater quality model that characterized the water quality in the Santa Paula Basin and examined the degree of impairment to water quality in the Basin. The model shows there is available assimilative capacity for salts and nutrients, including chloride, in most areas of the Santa Paula Basin to allow for recycled water projects consistent with the Recycled Water Policy. As described below, the City is planning to recycle effluent that is currently discharged to the percolation pond.

9. The City developed and utilized a simple spreadsheet mixing model, the Groundwater Chloride Transportation Model (Chloride Model), to analyze the effect of future effluent discharges on groundwater overtime at various distances from the percolation pond. The City's modeling assumed some degradation of groundwater with respect to chloride within a limited range of mixing zone radius below and adjacent to the SPWRF, measured from the boundaries of the percolation pond.

This distance is the maximum allowable distance where SPWRF effluent disposed to the percolation pond can mix with groundwater and result in receiving water chloride concentrations of 110 mg/L or less in order to provide protection to groundwater beneficial uses at the first encountered water supply wells which are at 150 feet away from the percolation ponds. Groundwater within the mixing zone will exceed the chloride groundwater quality objective (GQO) of 110 mg/L. Mass-volume balance calculations along with Darcy's Law are used to account for travel in porous media. The Chloride Model simulates instantaneous and complete mixing of ambient groundwater with effluent seepage reaching the water table from the percolation pond using SPWRF data for flow and chloride effluent concentrations. It was conservatively assumed that any effluent discharge to the percolation pond would infiltrate into the underlying aquifer and not be diverted for other uses. Groundwater parameters within the spreadsheet model were selected based on recent monitoring reports in order to be representative of average conditions within the vicinity of the 627
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SPWRF. The Chloride Model assumes an initial volume of groundwater underlying the ponds possessing background chloride concentrations of 136 mg/L. The volume of the existing groundwater body is calculated as the product of the radius of interest (150-1200 feet), an assumed saturated thickness of potentially impacted groundwater (50 feet), and the porosity of the underlying sediments (assumed to be

0.2) based on the low end of published literature values for a sand and gravel mixture. Based on the regional groundwater quality data documented in the SNMP, regional groundwater inflow is assumed to have a chloride concentration of 91 mg/L.

On December 14, 2016, Regional Water Board staff met with the City to discuss the results of the Chloride Model, which evaluated compliance with the groundwater quality objectives beneath and adjacent to the three percolation ponds, for various discharge scenarios. Based on Regional Water Board staff's comments, the City implemented additional discharge scenarios in the Chloride Model, which was discussed in meetings held on February 8, 2017, February 17, 2017, July 24, 2017, and August 7, 2017.

10. The Chloride Model simulated chloride concentrations in the receiving groundwater resulting from chloride mass loading reduction in the three percolation ponds. The Model predicted GQOs being achieved at 150 feet away from the percolation pond when the total mass of chloride in the effluent is significantly reduced. The initial mass of chloride is calculated based on the average chloride effluent concentration of 135 mg/L and the discharge rate of 2.2 MGD, which results in 2,479 pounds total mass of chloride discharged per day. The reduction of chloride mass discharged to the percolation pond can be achieved by improving the effluent chloride concentration (e.g., source control or treatment), or diverting a significant amount of flow for recycled water uses, or a combination of both in order to protect water supply wells AW01, AW02, and AW03, approximately 150, 150, and 300 feet, respectively, away from percolation pond. Water produced from these wells is primarily for agricultural irrigation use.

To achieve the chloride GQO of 110 mg/L in groundwater at least 150 feet away from the percolation pond, the City provided various effluent chloride concentrations and allowable flow combinations (Table 2). Based on the hydrology and hydrogeologic condition at the SPWRF percolation ponds area, the higher the concentration of chloride in the effluent, the less volume and mass can be discharged to percolation ponds to comply with the chloride GQO in the Basin Plan.

Table 2. Groundwater Chloride Transportation Model – Continuous Discharge 628
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Chloride Effluent
Concentration
Flow to
Percolation Ponds
(% of 2.2 MGD)
Allowable Effluent
Mass Load to
Groundwater
(Daily)
Chloride
Groundwater
Concentration at
150 feet
135 mg/L 0.07 MGD (3.2%) 79 pounds (lbs) 110 mg/L
130 mg/L 0.1 MGD (4.5%) 108 lbs 110 mg/L
125 mg/L 0.13 MGD (5.9%) 135 lbs 110 mg/L
120 mg/L 0.2 MGD (9.1%) 200 lbs 110 mg/L
115 mg/L 0.4 MGD (18.2%) 384 lbs 110 mg/L

11. To achieve compliance with the chloride GQO and to conserve potable water, the City will construct the advanced wastewater treatment system with RO as proposed in the April 15, 2020 letter. The Regional Board has evaluated the proposed RO system and determined that it will be consistent with the State Water Board's Recycled Water Policy and will preserve available assimilative capacity within the Santa Paula Basin consistent with the SNMP. The mass-based effluent limitation for chloride previously established in the WDRs will no longer be applicable, but the concentration-based effluent limitation for chloride is appropriate after implementing the RO system. The groundwater limitations are based on the GQOs in the Basin Plan.

12. On December 22, 2015, the City submitted the Recycled Water Program Technical Report and Notice of Intent with the Title 22 Engineering Report to the State Water Board's Division of Drinking Water (DOW) for approval. DOW conditionally approved the Title 22 Engineering Report on August 19, 2016. On June 14, 2017, the Regional Water Board enrolled the City's recycled water program under separate Water Reclamation Requirements for Recycled Water Use Order WQ 2016-0068-DDW, issued by the State Water Board on June 7, 2016.

In March 2020, the City decided to upgrade the SPWRF with the RO process to reduce the chloride concentrations in the effluent to meet the permit requirements.

In December 2021, the City stated that the RO system would be able to produce 110 mg/L of chloride in the effluent to meet the groundwater quality objective in the Basin Plan. Currently, the City has completed the State Water Board Clean Water State Revolving Fund application with the State Water Board Division of Financial Assistance. The City plans to complete construction of the RO system within two years of receiving the Final Funding Agreement but no later than December 2024.

13. In the City's report, Chloride Load Reduction Milestones, submitted to the Regional Water Board on March 14, 2017, the City included the construction of reverse osmosis treatment at the SPWRF as an option (under Supplemental Strategies), if needed, in order to comply with the chloride groundwater quality objective of 110 mg/L. The City will continue its source control efforts to remove SRWSs and will first focus on recycling most of its effluent in order to bring the groundwater back into 629
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compliance with GQOs. Progress with these efforts will be assessed at Year 2022 and determination will be made as to whether advanced treatment will be required to meet the chloride GQO at Year 2027. If advanced treatment is required, effluent limits will be applied in a way to ensure protection of all beneficial uses, including salt-sensitive crops.

In March 2020, the City decided to upgrade the SPWRF with an advanced treatment system, including RO, to reduce the chloride concentrations in the effluent to meet the permit requirements. In December 2021, the City stated that the RO system would be able to produce effluent with a chloride concentration of 110 mg/L to meet the groundwater quality objective in the Basin Plan. The City has submitted a State Water Board Clean Water State Revolving Fund application with the State Water Board Division of Financial Assistance. The City plans to complete construction of the RO system within two years of receiving the Final Funding Agreement but no later than December 2024.

14. Due to the following reasons, the City cannot immediately comply with the chloride effluent and groundwater limitations prescribed in this Order: (1) elevated chloride concentrations in the influent, (2) the wastewater treatment process not currently designed to remove chloride out of the waste stream, and (3) time needed to construct the advanced wastewater treatment system with RO. In addition, the current progress of the City's SRWS Buyback Program does not reliably ensure that the SPWRF will comply with the chloride effluent and groundwater limitations.

During the pendency of the CDO schedule, there will be permitted degradation of groundwater with respect to chloride within a limited mixing zone radius downgradient and adjacent to the SPWRF percolation ponds, measured from the boundaries of the percolation ponds to 150 feet. This distance is the shortest distance where SPWRF effluent disposed to the percolation pond can mix with groundwater and result in receiving water chloride concentrations of 110 mg/L or less. Groundwater within the 150-foot mixing zone will exceed the chloride GQO of 110 mg/L for the duration of the CDO schedule. Based on the available data, there are no water supply wells within the 150-foot mixing zone. The City can arrange for alternative water supplies for any well owners in the mixing zone, if any are discovered. At the end of the CDO schedule, the mixing zone is no longer allowed, and compliance with the chloride limitation of 110 mg/L at monitoring wells adjacent to and downgradient from the boundaries of the percolation ponds is required.

15. California Water Code (CWC) section 13301 provides in pertinent part "When a regional board finds that a discharge of waste is taking place, or threatening to take place, in violation of requirements or discharge prohibitions prescribed by the regional board or the state board, the board may issue an order to cease and desist 630
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and direct that those persons not complying with the requirements or discharge prohibitions (a) comply forthwith, (b) comply in accordance with a time schedule set by the board, or (c) in the event of a threatened violation, take appropriate remedial or preventive action ... Cease and desist orders may be issued directly by a board, after notice and hearing."

16. As a result of the historical monitoring data and other activities described in this CDO, the Regional Water Board finds that a discharge of waste is taking place or threatening to take place in violation of requirements or discharge prohibitions prescribed by the Regional Water Board in the City's WDRs, Order No. R4-2018- 0022. This CDO requires the City to take appropriate remedial action and to comply in accordance with the time schedule set forth below. The compliance schedules provide the City sufficient time to achieve compliance with the chloride requirements in its WDRs.

17. This Order includes interim effluent and groundwater limitations, identified below, and actions and milestones proposed by the City leading to compliance with the effluent and groundwater limitations for chloride. The interim effluent and groundwater limitations are based on gradual reductions in chloride mass loading.

The established compliance schedule is as short as possible, taking into account the technological, operation, and economic factors that affect the design, development, and implementation of the remedial actions that are necessary to comply with the effluent and groundwater limitations.

18. A CDO is appropriate in these circumstances to allow time for the City to implement the advanced wastewater treatment system to bring the SPWRF into compliance with the effluent and groundwater limitations. The temporary exceedances allowed by this CDO are in the public interest given the significant environmental benefits associated with reducing chloride loading to groundwater to promptly achieve compliance with the effluent and groundwater limitations, and to allow for potential recycled water use throughout the City of Santa Paula, especially in light of California's historic drought and predictions for future climatological effects from climate change.

19. CWC section 13267 provides in pertinent part:
(a) A regional board, in establishing or reviewing any water quality control plan or waste discharge requirements, or in connection with any action relating to any plan or requirement or authorized by this division, may investigate the quality of any waters of the state within its region.
(b)(1) In conducting an investigation specified in subdivision (a). the regional board may require that any person who has discharged, discharges, or is suspected of having discharged or discharging, or who proposes to discharge waste within its region ... shall furnish, under penalty of perjury, technical or monitoring program reports which the regional board requires. The burden, including costs, of these reports shall bear a reasonable relationship to the need for the 631
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City of Santa Paula Order No. R4-2018-0023-A01
Santa Paula Water Recycling Facility File No. 06-189
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report and the benefits to be obtained from the reports. In requiring those reports, the regional board shall provide the person with a written explanation with regard to the need for the reports, and shall identify the evidence that supports requiring that person to provide the reports.

20. The technical and/or monitoring reports required by this CDO are necessary to assure compliance with the WDRs Order No. R4-2018-0022 and this CDO. The City operates the SPWRF that produces and discharges the waste subject to WDRs. The actions and reports required by this CDO are directly related to the City's compliance with these requirements and do not require expense that is not already required pursuant to the WDRs. This CDO provides time for the City to comply and to spread costs over several years. The burden of these actions and reports bears a reasonable relationship to the need for the actions and reports.

21. This CDO concerns an existing facility and does not significantly alter the status with respect to the SPWRF. The issuance of this Order is an enforcement action by a regulatory agency and is being taken for the protection of the environment.

Therefore, issuance of this Order is exempt from the provisions of the California Environmental Quality Act (Public Resources Code, Section 21100, et seq.) in accordance with sections 15061(b)(3), 15301, 15306, 15307, 15308, and 15321 (a)(2) of Title 14 of the California Code of Regulations.

22. The Regional Water Board has notified the City and interested agencies and persons of its intent to issue this CDO concerning compliance with the WDRs. The Regional Water Board accepted written comments, and heard and considered all comments and evidence pertaining to this matter in a public hearing.

23. Any person aggrieved by this action of the Regional Water Board may petition the State Water Board to review the action in accordance with California Water Code section 13320 and California Code of Regulations, title 23, sections 2050 and following. The State Water Board must receive the petition by 5:00 p.m., 30 days after the date of this Order, except that if the thirtieth day following the date of this Order falls on a Saturday, Sunday, or state holiday, the petition must be received by the State Water Board by 5:00 p.m. on the next business day. Copies of the law and regulations applicable to filing petitions may be found on the Internet at Water Quality Petitions | California State Water Resources Control Board (http://www.waterboards.ca.gov/public_notices/petitions/water_quality) or will be provided upon request.

THEREFORE, IT IS HEREBY ORDERED that, pursuant to California Water Code sections 13301 and 13267, the City of Santa Paula, as owner of the SPWRF, shall comply with the following measures to ensure compliance with Order No. R4-2018-0022:

1. Cease and desist discharging chloride in violation or threatened violation of Order No. R4-2018-0022. No term or condition of Order No. R4-2018-0022 is superseded or stayed by this CDO.
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City of Santa Paula Order No. R4-2018-0023-A01
Santa Paula Water Recycling Facility File No. 06-189
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2. The discharge of treated wastewater from the SPWRF shall not cause the exceedance of the following groundwater limitations in Table 3 below. Comply immediately with the interim effluent and groundwater limitations for chloride prescribed in Table 3 below, and in accordance with the following schedule.

Table 3. Interim Chloride Limitations
Effluent Limitation
(Monthly Average)[0]
Mass
Reduction
Groundwater Limitation
(Monthly Average) Deadline
2,479 lbs/day[1] 0% 136 mg/L[2] February 8, 2018
2,231 lbs/day[1] 10% 136 mg/L[2] February 8, 2020
1,983 lbs/day[1] 20% 136 mg/L[2] February 8, 2021
1,983 lbs/day[5][6] 20% 136 mg/L[2] July 1, 2022
110 mg/L[3] Not applicable 129 mg/L[4] March 30, 2025
110 mg/L[3] Not applicable 114 mg/L[4] February 8, 2027 Table 3 notes:
[0] Monthly Average except as noted.
[1] Based on the City’s Chloride Load Reduction Milestones dated August 8, 2017. [2] Based on the 95th percentile of chloride effluent concentrations during the implementation of the SRWS Buyback Program from October 2015 to September 2017.
[3] The concentration-based effluent limitation is based on the groundwater quality objective in the Santa Paula Groundwater Basin-West of Peck Road Subbasin.

The deadline considers the date of December 30, 2024 for completion of construction of the reverse osmosis unit and a 90-day optimization period. [4] The change in the groundwater concentration is not expected to be immediate. [5] Based on paragraph No. 4.D, the City cannot consistently comply with the effluent limitation on a monthly basis due to a lack of flow control measures that would have been in place with the recycled water project. [6] Compliance with the effluent limitation is based on an annual monthly running average. For example, to meet the July 1, 2022 compliance date, the monthly average from July 2021 to June 2022 must be no greater than 1,983 lbs/day.

3. Comply with the following remedial actions and milestones according to the time schedule below:

A. By May 1, 2018, the City shall submit a technical report evaluating the longterm effectiveness of the SRWS Buyback Program for the reduction of chloride concentration in the SPWRF's effluent and the groundwater.

B. By August 1, 2018, the City shall submit a Groundwater Chloride Investigation and Well Protection Workplan (with schedules and milestones) for the Executive Officer's review and approval. The City shall implement this 633
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City of Santa Paula Order No. R4-2018-0023-A01
Santa Paula Water Recycling Facility File No. 06-189
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Workplan within 120 days from the Executive Officer's approval. The Workplan shall:
i. Identify the names/numbers and locations of the groundwater monitoring wells to determine site-specific groundwater flow direction and gradient for the purposes of adequately assessing any impacts of chloride discharges to the quality of the receiving groundwater; ii. Identify all water supply wells that may be influenced by the discharge of chloride from the SPWRF, the well structures, ownership and associated groundwater quality; and
iii. Include an approach to ensure that groundwater quality influenced by the discharge of chloride from the SPWRF and delivered from agricultural water supply wells to irrigate salt-sensitive crops be no higher than 117 mg/L. Alternatively, the City may voluntarily provide alternative water supplies to private well owners to irrigate salt-sensitive crops, upon request by the well owners.

C. By March 15, 2022, the City shall submit the final design report for the advanced treatment system at the SPWRF, including brine concentration facility and brine management plan.

D. By October 15, 2022, the City shall complete all necessary regulatory requirements, including compliance with the California Environmental Quality Act (CEQA), and obtain all necessary permits for construction and/or installation of the advanced treatment system.

E. Within three months of receiving the Final Funding Agreement from the Department of Financial Assistance, but no later than March 30, 2023, the City shall complete and release a Bid Package for the advanced wastewater treatment system with a reverse osmosis process.

F. No later than June 30, 2023, the City shall complete contractor selection and award the contract for construction of the advanced wastewater treatment system with a reverse osmosis process.

G. Within twenty-four months of receiving the Final Funding Agreement from the Department of Financial Assistance, but no later than December 30, 2024, the City shall complete construction and start-up of the advanced wastewater treatment system with a reverse osmosis process.

H. As soon as possible, but no later than February 8, 2028, the City shall achieve full compliance with the effluent and groundwater limitations for chloride prescribed in Order No. R4-2018-0022.
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City of Santa Paula Order No. R4-2018-0023-A01
Santa Paula Water Recycling Facility File No. 06-189
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I. After each date listed in subsection A through G above, the City shall provide a verbal report at the next regularly scheduled Board meeting pertaining to the compliance, or lack thereof, with the requirement.

J. Subsections F and G, above, do not limit the City's ability to propose a Basin Plan amendment for Regional Water Board consideration prior to November 14, 2024. At any time during the term of this CDO, the City may propose a Basin Plan amendment that the Regional Water Board will consider, including an averaging period and/or a site-specific chloride GQO that protects beneficial uses. As with subsection G, the City shall include supporting scientific and technical information and analysis demonstrating that beneficial uses would be protected, as well as documentation that such a proposal was discussed in detail by a stakeholder working group.

4. Submit quarterly progress reports on the status of the City's compliance with the effluent and groundwater limitations for chloride in Order No. R4-2018-0022 and this CDO.

A. Each quarterly progress report shall include, but is not limited to:
i. Continuous SRWS Buyback Program Assessment - The City shall report its progress on the SRWS Buyback Program and evaluate whether the Program is resulting in chloride reductions in the effluent and groundwater.
ii. Groundwater and Well Protection Program - The City shall report its progress on implementing the Groundwater Chloride Investigation and Well Protection Workplan, including the actions taken to protect water supply wells influenced by the discharge of chloride from the SPWRF. iii. Alternative Effluent Chloride Mitigation Implementation - The City shall provide the progress of implementing the alternative effluent chloride mitigation workplan and evaluate the compliance with the schedule and milestones set forth in the CDO and WDRs.

B. Quarterly progress reports shall be received by the Regional Water Board by the 30th day of the month following the end of each quarterly monitoring period according to Table 4 below. The first report is due by April 30, 2018.

Table 4. Reporting Period and Due
Quarterly Report Reporting Period Report Due
First Quarter January – March April 30
Second Quarter April – June July 30
Third Quarter July – September October 30
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City of Santa Paula Order No. R4-2018-0023-A01
Santa Paula Water Recycling Facility File No. 06-189
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Quarterly Report Reporting Period Report Due
Fourth Quarter October – December January 30
Annual January – December April 30
Table 4 notes if a deadline falls on a Saturday, Sunday, or State holiday, the report must be received by the next business day.

5. Any person signing a document submitted under this CDO shall make the following certification:
"I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted.

Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations."

6. In accordance with California Business and Professions Code sections 6735, 7835, and 7835.1, engineering and geologic evaluations and judgments shall be performed by or under the direction of registered professionals competent and proficient in the fields pertinent to the required activities. All technical reports specified herein that contain work plans for, that describe the conduct of investigations and studies, or that contain technical conclusions and recommendations concerning engineering and geology shall be prepared by or under the direction of appropriately qualified professional(s), even if not explicitly stated. Each technical report submitted by the City shall contain the professional's signature and/or stamp of the seal.

7. The City shall submit all reports required under this CDO, including groundwater monitoring data in Electronic Data Format, well and discharge location data, and searchable Portable Document Format (PDF) of reports and correspondence, to the State Water Board's GeoTracker database under Global ID WDR100000849.

8. If the City fails to comply with any provision of this CDO, the Regional Water Board may take any further action authorized by law. The Executive Officer, or his/her delegee, may take appropriate administrative enforcement action pursuant, but not limited to, California Water Code sections 13268 and/or 13350. The Regional Water Board may also refer any violations to the Attorney General for judicial enforcement, including injunction and civil monetary remedies.

9. This CDO may be reopened at the Regional Water Board's discretion to consider limits or other requirements for the SPWRF and may specifically be reopened to make revisions consistent with the City's efforts to reduce chloride discharge from the SPWRF.
636
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City of Santa Paula Order No. R4-2018-0023-A01
Santa Paula Water Recycling Facility File No. 06-189
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10. This Order becomes effective immediately upon issuance.

I, Renee Purdy, Executive Officer, do hereby certify that the foregoing is a full, true, and correct copy of an Order adopted by the California Regional Water Quality Control Board, Los Angeles Region, on May 12, 2022.

Renee Purdy
Executive Officer
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APPENDICES
City of Santa Paula Wastewater Collection System and Water Recycling Facility Master Plan Appendix D – Trussel Technologies, Inc., Evaluation of Biological Design and Process Sizing Technical Memorandum
638
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APPENDICES
City of Santa Paula Wastewater Collection System and Water Recycling Facility Master Plan Appendix E – Lift Station Condition Assessment
665
DRAFT
Lift stations are considered confined spaced. DO NOT ENTER FOR ANY REASON.

Make observations from the surface using photo/video equipment and lighting.

Name of Observer: _______Sarah Mathews____________________________ Lift Station Name: _______Harding Park________________________ Date:___9/12/23_______ Location (Add Sketch Pg. 5):______________________________________________ Weather:___Sunny_______ Personnel:____Morgan and Tanner____________________
Surroundings (i.e., enclosure, lawn, street):_________________________________________________________________________ Year Built/Improved:___________________________________________________________________________________________ As‐Builts Available: ___________________________________________________________________________________________ Design Capacity:______________________________________________________________________________________________ Pump Maintenance:___________________________________________________________________________________________ Model #:_______________________________________________________________________________________ Serial #:________________________________________________________________________________________ Item
Exist.
(Y/N)
Oper.
(Y/N) Notes
Configuration / Pumps:

Wet well w/ submers.

Or suction Lift ‐ round wet well
Wet well / dry well ‐ submersibles in wet well
Number of Pumps 2 ‐ collects from 1 house located 350+ ft NW of LS and 1 restroom directly W of LS VFDs N ‐ recent seal failure (per operator)
Wet well shape and size
# of inlets 2
Size?
Depth relative to
Pumps/Floor
Known Pump Issues
Overheating/ Noise/ Ragging
Lift Station Safety Features:

Fall protection N ‐ lighting comes from parking lot
Bollards N
Lifting equipment N
Explosion‐proof fixtures
Ventilation of wet well/ dry well
Lighting
Locks of hatches/ covers/ etc. Y
Stair Railing
Eye wash
(if chemical treatment)
Lift Station Visual Inspection Checklist

Page 1 of 5 ends

DRAFT
Lift stations are considered confined spaced. DO NOT ENTER FOR ANY REASON.

Make observations from the surface using photo/video equipment and lighting.

Name of Observer: _______Sarah Mathews____________________________ Lift Station Name: _______Harding Park________________________ Date:___9/12/23_______ Lift Station Visual Inspection Checklist
Item
Exist.
(Y/N)
Oper.
(Y/N) Notes
Flood Resilience:

Backup power ‐ some flooding issues historically but not recently Redundant controls
Flood doors
Elevated station (or barriers)
Backup Power:

Perm. Generator N ‐ use submersible pump
Generator Plug Panel ‐ vactor truck
Type of fuel
Automatic Transfer Switch N
Manual Transfer Switch N
Space for Temporary Gen.

Wet Well Structure:

Material type / condition Y ‐ coating ok
Liner (presence / type) ‐ odor issues
Offsets ‐ debris issues
Protrusions ‐ grease buildup
Exposed reinforcing
Access hatch‐type/condition
Scratch test
Odor Control
Overflow Level
FOG Issues
High Water Level Stains

Page 2 of 5 ends

DRAFT
Lift stations are considered confined spaced. DO NOT ENTER FOR ANY REASON.

Make observations from the surface using photo/video equipment and lighting.

Shape ‐ good
Dimensions
Structural Condition
Lighting
Ventilation
Access to Equipment
Perm. Lifting Equipment
Sump Pump
Pipe Supports
Equipment Anchors
Coatings:

Pipe coatings‐exposed ‐ good
Valve coatings‐exposed
Pipe coatings‐wet well
Valve coatings‐wet well
Pipe coatings‐vault
Valve coatings‐vault
Structure Coatings (other than wet
well)
Instrumentation:

Level controls ‐ level sensor
Flow meter ‐ antenna radios to lemonwood 1 (power failure, high level) Gauges
Pressure switches
SCADA/Telemtry
Antennae
Alarms (List)
MCC Enclosure‐style/condition
Shade structure (Elec.)
Shade structure (Instr.)
Intrusion Alarms

Page 3 of 5 ends

DRAFT
Lift stations are considered confined spaced. DO NOT ENTER FOR ANY REASON.

Make observations from the surface using photo/video equipment and lighting.

Vehicular ‐ parking lot leads to LS
Maint. Equip. (ie vactor truck /
crane
Surfacing (paved, gravel)
Height/orientation of panels
Bypassing Provisions:

Points of connection ‐ none
Quick connects
Site Features:

Potable water Y ‐ located in park
Spill containment
On‐site Eqpt. Storage
Gates, Site Fencing
Lighting
Overflow Tank / Containment

Page 4 of 5 ends

DRAFT
Lift stations are considered confined spaced. DO NOT ENTER FOR ANY REASON.

Make observations from the surface using photo/video equipment and lighting.

Name of Observer: _______Sarah Mathews____________________________ Lift Station Name: _______Harding Park________________________ Date:___9/12/23_______ Lift Station Visual Inspection Checklist
‐ rain water comes down through ceiling conduit into panel; fried some of the safeties

Page 5 of 5 ends

DRAFT
Lift stations are considered confined spaced. DO NOT ENTER FOR ANY REASON.

Make observations from the surface using photo/video equipment and lighting.

Name of Observer: __________Sarah Mathews_________________________________ Lift Station Name: _______Lemonwood 1_______________________________ Date:____9/12/23__________________ Location (Add Sketch Pg. 5):______________________________________________ Weather:___________________ Personnel:_____Morgan and Tanner________________________________________________________ Surroundings (i.e., enclosure, lawn, street):_________________________________________________________________________ Year Built/Improved:___________________________________________________________________________________________ As‐Builts Available: ___________________________________________________________________________________________ Design Capacity:______________________________________________________________________________________________ Pump Maintenance:___________________________________________________________________________________________ Model #:_______________________________________________________________________________________ Serial #:________________________________________________________________________________________ Item
Exist.
(Y/N)
Oper.
(Y/N) Notes
Configuration / Pumps:

Wet well w/ submers.

Or suction Lift ‐ 2 aboveground pumps over wetwell suction lift Wet well / dry well ‐ flow conditions are ok following installation of new lift station Number of Pumps 2 Y ‐ pumps are old, not super strong
VFDs N ‐ operators stated they prefer submersible pumps Wet well shape and size
# of inlets
Size?
Depth relative to
Pumps/Floor
Known Pump Issues
Overheating/ Noise/ Ragging
Lift Station Safety Features:

Fall protection N ‐ lighting upgrades are recent
Bollards N
Lifting equipment
Explosion‐proof fixtures
Ventilation of wet well/ dry well N
Lighting Y
Locks of hatches/ covers/ etc. Y
Stair Railing N/A
Eye wash
(if chemical treatment)
N
Lift Station Visual Inspection Checklist

Page 1 of 5 ends

DRAFT
Lift stations are considered confined spaced. DO NOT ENTER FOR ANY REASON.

Make observations from the surface using photo/video equipment and lighting.

Backup power ‐ runoff problems
Redundant controls ‐ no flooding issues historically
Flood doors
Elevated station (or barriers)
Backup Power:

Perm. Generator ‐ manual transfer switch
Generator Plug Panel ‐ portable generator if needed
Type of fuel
Automatic Transfer Switch
Manual Transfer Switch
Space for Temporary Gen.

Wet Well Structure:

Material type / condition ‐ coating is ok
Liner (presence / type) ‐ low inlets
Offsets
Protrusions
Exposed reinforcing
Access hatch‐type/condition
Scratch test
Odor Control
Overflow Level
FOG Issues
High Water Level Stains

Page 2 of 5 ends

DRAFT
Lift stations are considered confined spaced. DO NOT ENTER FOR ANY REASON.

Make observations from the surface using photo/video equipment and lighting.

Shape ‐ N/A
Dimensions
Structural Condition
Lighting
Ventilation
Access to Equipment
Perm. Lifting Equipment
Sump Pump
Pipe Supports
Equipment Anchors
Coatings:

Pipe coatings‐exposed ‐ OK
Valve coatings‐exposed
Pipe coatings‐wet well
Valve coatings‐wet well
Pipe coatings‐vault
Valve coatings‐vault
Structure Coatings (other than wet
well)
Instrumentation:

Level controls ‐ radio; works fine; operator called it "sensophone" Flow meter ‐ flow meter
Gauges ‐ level sensor (~ 3 yrs)
Pressure switches ‐ bubbler control panel; bubbler is cycling consistently SCADA/Telemtry
Antennae Y
Alarms (List)
MCC Enclosure‐style/condition
Shade structure (Elec.) Y
Shade structure (Instr.)
Intrusion Alarms

Page 3 of 5 ends

DRAFT
Lift stations are considered confined spaced. DO NOT ENTER FOR ANY REASON.

Make observations from the surface using photo/video equipment and lighting.

Vehicular Y ‐ Pavement has some condition issues
Maint. Equip. (ie vactor truck /
crane ‐ Access by homeless; fence broken
Surfacing (paved, gravel) Y ‐ Hard to turn around in vehicle; small site Height/orientation of panels
Bypassing Provisions:

Points of connection Y
Quick connects Y
Site Features:

Potable water Y ‐ graffiti on walls
Spill containment N
On‐site Eqpt. Storage
Gates, Site Fencing
Lighting Y
Overflow Tank / Containment

Page 4 of 5 ends

DRAFT
Lift stations are considered confined spaced. DO NOT ENTER FOR ANY REASON.

Make observations from the surface using photo/video equipment and lighting.

Page 5 of 5 ends

DRAFT
Lift stations are considered confined spaced. DO NOT ENTER FOR ANY REASON.

Make observations from the surface using photo/video equipment and lighting.

Name of Observer: ________Sarah Mathews______________________ Lift Station Name: _______Harvest______________ Date:____9/12/23______ Location (Add Sketch Pg. 5):______________________________________________ Weather:____Sunny______ Personnel:______Morgan and Tanner________________________ Surroundings (i.e., enclosure, lawn, street):_________________________________________________________________________ Year Built/Improved:___________________________________________________________________________________________ As‐Builts Available: ___________________________________________________________________________________________ Design Capacity:______________________________________________________________________________________________ Pump Maintenance:___________________________________________________________________________________________ Model #:_______________________________________________________________________________________ Serial #:________________________________________________________________________________________ Item
Exist.
(Y/N)
Oper.
(Y/N) Notes
Configuration / Pumps:

Wet well w/ submers.

Or suction Lift ‐ round wet well shape
Wet well / dry well ‐ submersibles
Number of Pumps 3 ‐ no issues w/ pumps
VFDs N
Wet well shape and size
# of inlets
Size?
Depth relative to
Pumps/Floor
Known Pump Issues
Overheating/ Noise/ Ragging
Lift Station Safety Features:

Fall protection Y
Bollards N
Lifting equipment
Explosion‐proof fixtures
Ventilation of wet well/ dry well
Lighting Y
Locks of hatches/ covers/ etc. Y
Stair Railing
Eye wash
(if chemical treatment)
Lift Station Visual Inspection Checklist

Page 1 of 5 ends

DRAFT
Lift stations are considered confined spaced. DO NOT ENTER FOR ANY REASON.

Make observations from the surface using photo/video equipment and lighting.

Name of Observer: ________Sarah Mathews______________________ Lift Station Name: _______Harvest______________ Date:____9/12/23______ Lift Station Visual Inspection Checklist
Item
Exist.
(Y/N)
Oper.
(Y/N) Notes
Flood Resilience:

Backup power ‐ N/A
Redundant controls
Flood doors
Elevated station (or barriers)
Backup Power:

Perm. Generator Y
Generator Plug Panel
Type of fuel
Automatic Transfer Switch
Manual Transfer Switch
Space for Temporary Gen.

Wet Well Structure:

Material type / condition ‐ H2S damage on metal piping, switches, electronics, etc.

Liner (presence / type) ‐ structure doing well; just coating and piping damage Offsets ‐ ongoing H2S issues
Protrusions ‐ has capsule‐shaped 10,000 gal overflow tank Exposed reinforcing
Access hatch‐type/condition
Scratch test
Odor Control
Overflow Level
FOG Issues
High Water Level Stains

Page 2 of 5 ends

DRAFT
Lift stations are considered confined spaced. DO NOT ENTER FOR ANY REASON.

Make observations from the surface using photo/video equipment and lighting.

Shape
Dimensions
Structural Condition
Lighting
Ventilation
Access to Equipment
Perm. Lifting Equipment
Sump Pump
Pipe Supports
Equipment Anchors
Coatings:

Pipe coatings‐exposed ‐ general corrosion
Valve coatings‐exposed ‐ vault had previous leakage
Pipe coatings‐wet well ‐ vault has some H2S due to drain to wet well Valve coatings‐wet well
Pipe coatings‐vault
Valve coatings‐vault
Structure Coatings (other than wet
well)
Instrumentation:

Level controls ‐ level sensing transmitter
Flow meter ‐ no flow metering
Gauges
Pressure switches
SCADA/Telemtry
Antennae
Alarms (List)
MCC Enclosure‐style/condition
Shade structure (Elec.)
Shade structure (Instr.)
Intrusion Alarms

Page 3 of 5 ends

DRAFT
Lift stations are considered confined spaced. DO NOT ENTER FOR ANY REASON.

Make observations from the surface using photo/video equipment and lighting.

Vehicular ‐ gated
Maint. Equip. (ie vactor truck /
crane ‐ no issues
Surfacing (paved, gravel) ‐ access a bit tight
Height/orientation of panels
Bypassing Provisions:

Points of connection Y
Quick connects
Site Features:

Potable water Y ‐ site ~ 3 yrs old
Spill containment N
On‐site Eqpt. Storage
Gates, Site Fencing Y
Lighting Y
Overflow Tank / Containment Y

Page 4 of 5 ends

DRAFT
Lift stations are considered confined spaced. DO NOT ENTER FOR ANY REASON.

Make observations from the surface using photo/video equipment and lighting.

Name of Observer: ________Sarah Mathews______________________ Lift Station Name: _______Harvest______________ Date:____9/12/23______ Lift Station Visual Inspection Checklist

Page 5 of 5 ends

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APPENDICES
City of Santa Paula Wastewater Collection System and Water Recycling Facility Master Plan Appendix F – Treated Effluent Monthly Average Monitoring Results 2019-2023
681
DRAFT
Total
Dissolved
Solids
(mg/L)
Chloride1
(mg/L)
Sulfate
(mg/L)
Boron
(mg/L)
Nitrite-N
(mg/L)
Ammonia-N +
Nitrate-N +
Nitrite-N
(mg/L)
2,000 110 800 1 1 10
January 1190 118 427 0.752 0 7.07
February 1370 125 569 0.889 0 7.95
March 1250 129 511 0.74 0.02 3.74
April 1270 126 500 0.766 0.01 7.48
May 1280 119 474 0.842 0.02 4.62
June 1250 124 521 0.694 0.04 5.24
July 1180 122 482 0.685 0.2 0.54
August 1200 116 457 0.846 0.04 1.58
September 1150 112 437 0.787 ND 0.7
October 1200 114 446 0.673 ND 1.5
November 1270 117 435 0.736 0.03 9.07
December 1160 116 413 0.684 0.02 7.36
January 1270 120 458 0.77 0.03 5.31
February 1230 121 458 0.689 0.04 4.38
March 1220 122 458 0.72 0.03 1.62
April 1300 126 481 0.798 0.03 6.22
May 1250 120 469 0.77 ND 2.51
June 1250 118 444 0.631 0.05 4.42
July 1260 116 421 0.759 0.03 4.13
August 1220 116 418 0.723 0.03 3.44
September 1210 117 432 0.659 0.05 4.8
October 1240 116 451 0.781 0.07 5.4
November 1190 118 381 0.848 0.04 7.8
December 1200 118 421 0.775 ND 8.86
January 1210 113 444 0.766 ND 5.31
February 1250 122 449 0.984 ND 17.9
March 1260 128 400 0.772 ND 8.32
April 1250 112 467 0.737 0.05 9.4
May 1250 117 414 0.835 0.04 8.6
June 1310 115 414 0.729 <0.1 6.7
July 1260 106 447 0.77 0.02 9.9
August 1220 107 422 0.874 0.03 6.1
September 1210 110 427 0.711 0.03 9.6
October 1240 104 453 0.874 0.03 7.71
November 1240 97 457 0.849 0.03 11.7
December 1210 109 383 0.849 0.03 10.2
Treated Effluent Monthly Average Monitoring Results (2019-2023) WDR Limit
2 0
1 9
2 0
2 0
2 0
2 1
682
DRAFT
Total
Dissolved
Solids
(mg/L)
Chloride1
(mg/L)
Sulfate
(mg/L)
Boron
(mg/L)
Nitrite-N
(mg/L)
Ammonia-N +
Nitrate-N +
Nitrite-N
(mg/L)
WDR Limit 2,000 110 800 1 1 10
January 1240 105 493 0.914 0.2 3.57
February 1220 107 409 0.776 0.03 9.4
March 1200 109 442 0.866 0.04 6.4
April 1200 110 387 0.833 0.07 7.06
May 1260 101 407 0.612 ND 6.8
June 1220 106 394 0.763 0.02 8.7
July 1240 108 420 0.794 0.04 16.85
August 1250 101 418 0.91 0.05 22.3
September 1230 109 435 0.962 0.3 8.5
October 1200 118 400 1.15 0.04 5.54
November 1230 120 469 0.832 0.04 8
December 1170 116 445 0.836 ND 11.2
January 1380 116 556 0.994 0.03 7.18
February 1290 124 457 0.881 0.04 4.4
March 1420 116 584 1.12 0.03 8.9
April 1390 121 543 0.921 0.02 13.62
May 1310 124 418 0.852 ND 11.3
June 1250 122 458 0.089 ND 9.3
July 1390 116 543 0.921 0.02 13.62
August 1290 113 446 0.909 <0.1 6.3
September 1230 114 472 0.9 0.03 6.5
October 1260 115 456 0.755 ND 7.5
November 1250 122 476 0.972 0.03 8.03
December 1240 120 462 0.854 0.03 7.7
Notes:

1. Exceedances are underlined and italicized.

2. ND = Not detected
2 0
2 2
2 0
2 3
683
DRAFT

APPENDICES
City of Santa Paula Wastewater Collection System and Water Recycling Facility Master Plan Appendix G – WRF Condition Assessment Checklist
684
DRAFT
Name of Observer: Mike Nunley, PE
WWTP Name: Santa Paula Water Recycling Facility Date: 7/27/23 Personnel: Pete, Ethan Weather: Clear
Year Built/Improved: 2010
As‐Builts Available: Yes
Design Capacity: 4.1 MGD
Item
Mechanical
• Lifting chain corroded ‐ needs to be replaced
• Check valves on lift station have issues
• Volutes are in good shape (VRSO, CPO)
• Lift station pumps are the original pumps ‐ evaluate pumps to repair or replace Instrumentation
• Seal failure
• No local HMI
Electrical
• Consider changing cords out
Structural
• Concrete/liners in bad shape ‐ haven't been in ILS
• Aluminum cover ‐ should be fiberglass, support brackets are failing • Spalling of slab near influent meter
• Replace manhole cover and ring
• Influent flow weir is worn concrete, no metal protection • Influent channel needs to be repaired and relined
• Grating worn
• No fall arrest on any ladder
Operator Notes and Observations
• N/A
Mechanical
• #2 Grit classifier failing ‐ stainless steel rotting out, wear plates missing and need to be replaced • Total of 2 coarse screen, 2 fine screens, 2 classifiers • Need manufacturer's maintenance, bearing replacement, screens and augers Instrumentation
• Total of 2 space level transducer, 6 endress hauser panels • H2S gas causing problem w/ electrical cords + panels
• H2S will damage Huber stainless equipment
Wastewater Treatment Plant Visual Inspection Checklist
• Need harnesses, hoists, blowers, gas detectors (confined space equipment; VRSD is currently charging for their own equipment) Influent Pump Station
Influent Pump Station (Continued)
Safety
Grit Removal/Coarse & Fine Screens

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DRAFT
Wastewater Treatment Plant Visual Inspection Checklist
Electrical
• N/A
Structural
• N/A
Safety
• N/A
Operator Notes and Observations
• Replaced bagging system, which has been working well ‐ less dumpster corrosion Mechanical
• No aeration
Instrumentation
• Pacing used to be automatic; now operator has to log in every night for shaving • SCADA needs to be set to work automatically with flow rates, auto shaving Electrical
• Conduit getting corroded (intermittent)
Structural
• EQ weirs ‐ concrete doesn't have knife's edge, worn
• Aluminum & orange grating needs to be replaced
Safety
• N/A
Operator Notes and Observations
• N/A
Mechanical
• N/A
Instrumentation
• N/A
Electrical
• N/A
Structural
• EQ weirs ‐ concrete doesn't have knife's edge, worn
• Aluminum & orange grating needs to be replaced
Safety
• N/A
Operator Notes and Observations
• Rarely used; except when plant has high flow events
Grit Removal/Coarse & Fine Screens (Cont.)
Flow Equalization Tank 1
Flow Equalization Tank 2

Page 2 of 7 ends

DRAFT
Wastewater Treatment Plant Visual Inspection Checklist
Mechanical
• April/May ‐ exceeded NO3 due to failed RAS/WAS pump
• EQ valve in #3 failed ‐ can now be isolated with first 2 valves Instrumentation
• N/A
Electrical
• N/A
Structural
• Top 3 ft starting to corrode
Safety
• N/A
Operator Notes and Observations
• N/A
Mechanical
• Need RAS spare pump
• Issues with mixers in RAS + WAS tangling, rails bending, skewed, cut up cables etc.

Instrumentation
• N/A
Electrical
• N/A
Structural
• Upper 3‐4 ft in general are worn ‐ potential need for coating • Tank 1 has scars from mixer
Safety
• N/A
Operator Notes and Observations
• Working well
Mechanical
• Self clean not working ‐ won't run in reverse for cleaning, brushes worn out ‐ needs maintenance • Oil box needs 10 year overhaul
• Feed pump doesn't prime well
• Rotary lobe pumps feed thickener + press, rotary lobe pumps have worn plates • Replace bristles
Instrumentation
• N/A
Electrical
• N/A
Aeration Tanks
Thickeners/Screw Press
Anoxic Tanks

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DRAFT
Wastewater Treatment Plant Visual Inspection Checklist
Structural
• N/A
Safety
• N/A
Operator Notes and Observations
• Needs redundancy
• Need second unit
• Auger to trailer needs maintenance
Mechanical
• Both blowers working
• Software not compatible with old blower ‐ microsoft doesn't cover HMIs anymore ‐ results in needing new inverter Instrumentation
• N/A
Electrical
• N/A
Structural
• N/A
Safety
• N/A
Operator Notes and Observations
• N/A
Mechanical
• One blower (MBR #1) shuts off randomly at times
• Return channel ‐ blower not sized adequately
Instrumentation
• #2 WAS pump fault ‐ turns off
• Tie citric acid pump into MBR PLC
• MBR PLC #M needs redundant back up just like PLC A&B (not in back up PLC list order #1) Electrical
• N/A
Structural
• Coatings starting to chip off
Safety
• N/A
Operator Notes and Observations
• Tie citric acid pump into MBR PLC
• Permeate pumps need to be evaluated and rebuilt
• Operators prefer separate turbidity meters for each train on MBR Aerobic Digesters
Membrane Separation Tanks
Thickeners/Screw Press (Cont.)

Page 4 of 7 ends

DRAFT
Wastewater Treatment Plant Visual Inspection Checklist
Mechanical
• Only 3 out of 5 modules are seeing flow
• Replaced 2/3 of bulbs
• Lot of shattered bulbs
• Bulbs at 30,000 hrs ‐ should be replaced at 12,000 hrs per manufacturer recommendation Instrumentation
• N/A
Electrical
• N/A
Structural
• N/A
Safety
• N/A
Operator Notes and Observations
• 3 modules in use at any time
• Recently maintenance had shattered valves
• Electronics need to be replaced ‐ many back panels not working Mechanical
• N/A
Instrumentation
• N/A
Electrical
• N/A
Structural
• N/A
Safety
• N/A
Operator Notes and Observations
• N/A
Mechanical
• Irrigation system not working ‐ cracked pipeline
Instrumentation
• N/A
Electrical
• N/A
Structural
• N/A
Safety
• N/A
Operator Notes and Observations
• Water is beginning to pool in one pond
• Rocks, etc. need to be cleared out
• Replace liners (rips in ponds), perform weed control
Percolation Pond
UV Disinfection
Percolation Pond Diversion Structure

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DRAFT
Wastewater Treatment Plant Visual Inspection Checklist
Mechanical
• N/A
Instrumentation
• N/A
Electrical
• N/A
Structural
• N/A
Safety
• N/A
Operator Notes and Observations
• N/A
• No insulation on roof
• Windows ‐ leak in control room
• Screens damaged ‐ replace
• Doors ‐ repaint; door locks damaged
• Paint trim
• Two HVAC units need to be replaced
• Lighting poor ‐ replace with LEDs; ballasts need to be replaced • No insulation on roof
• Windows ‐ leak in control room
• Screens damaged ‐ replace
• Doors ‐ repaint; door locks damaged
• Paint trim
• Lighting poor ‐ replace with LEDs; ballasts need to be replaced • Remove sludge
• Replace transformer
• Need new sump pumps
• New exhaust fan ‐ should be automatic when vault opens and current one is not • Repair circ. pump and valves
• Fix water leaks into vault
• New pond lights
• Liner is in ok condition
• Ladder rusting
• Hatch is in good condition
Biofilter
Controls Building
Decorative Pond
• Fire alarm system ‐ replace panel; smoke detector in building failed Headworks Building

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DRAFT
Wastewater Treatment Plant Visual Inspection Checklist
• Dump Station ‐ not used and they do not plan on using it in the future • Crane ‐ needs maintenance and load certification
• Concrete spalled on pad for old odor control system ‐ repair • Reuse line ‐ a lot of movement on startup
• Operators requested new tools ‐ tap and die set (SAE and Metric), multi‐function welder for SS, electric winches for gantry, blower, battery rachet • Portable ladders ‐ old, worn out, sun damaged; all fixed ladders are good • Add rolling stair for sludge truck ‐ 12 foot step ladder unsafe • Effluent meter ‐ no weir/flume, does not measure accurately • Paint condition is poor throughout plant
• Blowers need to be replaced or rebuilt in general
• Wasting pumps have problems with SCADA on start
• Generator needs service, filters, hoses, fuel polish, batteries, oil change, and paint • Transfer switch needs service
• Irrigation system timer runs numerous cycles a day, should only be running once (needs replacement) General Observations

Page 7 of 7 ends

DRAFT

APPENDICES
City of Santa Paula Wastewater Collection System and Water Recycling Facility Master Plan Appendix H – WRF Condition Assessment Photos
692
DRAFT
Headworks Fine Screen Unit Coarse Screen Unit Grit Classifier 693
DRAFT
Dewatering Screw Press Thickener Feed Pump Gravity Belt Thickener 694
DRAFT
MBR Basins Permeate
Pump MBR Basins
695
DRAFT
Headworks/Dewatering and Controls Building 696
DRAFT
UV Disinfection CIP Pump UV Channels RO Low Pressure Pump UV Module Instrumentation 697
DRAFT

APPENDICES
City of Santa Paula Wastewater Collection System and Water Recycling Facility Master Plan Appendix I – MBR Process Design Calculations
698
DRAFT
I. Wastewater Parameters/Characteristics Enter values in yellow cells only.

Design ww Flow Rate, Qo = 3.00 MGD Influent TSS, TSSo = 329 mg/L Influent BOD, BODo = 420 mg/L Influent VSS, VSSo = 260 mg/L Influent sBOD, sBODo = 168 mg/L
Influent TKN, TKNo = 70 mg/L
Influent COD, CODo = 857 mg/L TKN peak/ave factor, FS = 1.0 Influent sCOD, sCODo = 129 mg/L Influent NH4-N, NH4-No = 42 mg/L Influent rbCOD, rbCODo = 86 mg/L Influent Alkalinity, Alko = 300 (mg/L as CaCO3)
ratio, bCOD/BOD = 1.6 Aeration WW Temp, Tww = 66.2 o
F
II. Biological Kinetic Coefficients - For BOD Removal
Synth. Yield Coeff., Y = 0.40 lb VSS/lb bCOD Half Veloc. Coeff., Ks = 20 mg/L Temp coeff., q, for mm = 1.07 Temp coeff., q, for kd = 1.04 Resid. biomass fract., fd = 0.15
Max spec. gwth rate at 20o
C, µm20 = 6 lb VSS/d/lb VSS
Endog. Decay coeff. at 20o
C, kd20 = 0.12 lb VSS/d/lb VSS
III. Biological Kinetic Coefficients - For Nitrification The source for the values in the table above is:

Synth. Yield Coeff., Yn = 0.12 lb VSS/lb NOx
Temp coeff., q, for mmn = 1.070 Half Veloc. Coeff. at 20o C, Kn = 0.7 mg/L
Temp coeff., q, for kdn = 1.040 Half Veloc. Coeff. at 20oC, Ko = 0.5 mg/L Temp coeff., q, for Kn = 1.053 Temp coeff., q, for Ko = 1 Max spec. gwth rate at 20o
C, µmn20 = 0.8 lb VSS/d/lb VSS
Endog. Decay coeff. at 20oC, kdn20 = 0.08 lb VSS/d/lb VSS IV. Constants Used in the Calculations
Saturation D.O. in water
Ratio of BOD5 to BODu , f = 0.68 at 20o
C & 1 atm, Css = 9.17 mg/L
BODu equiv. of VSS = 1.42 lb BODu/lb VSS Standard Pressure = 14.7 psi Spec Wt of water, γH2O = 62.4 lb/ft3 Standard Temperature = 68.0 o F
Mol. Wt. of Air = 28.97 Mol. Wt. of Oxygen = 32.0
Temp Coeff. for O2 rate, θ = 1.024 O2 mole fraction in Air = 0.209 The source for the values in the table above is:

Copyright © McGraw-Hill Global Education Holdings, LLC. All rights reserved. Introduction to Water Rsource Recovery Facility Design, 2nd Ed., Table 6.2 WW INFORMATION BIOL. KINETIC COEFFICIENTS CONSTANTS
MBR WW Treatment Process Design Calculations - U.S. Units User Inputs and Constants
Discussion and References
For background information about Membrane Bioreactors (MBRs) see:

Design of Water Resource Recovery Facilities, 6th Ed., Sec. 12.6 Membrane Bioreactors Water and Wastewater Engineering: Design Principles and Practice Section 23.8, Membrane Bioreactor Design Practice
Membrane Bioreactors: WEF MOP No. 36, Chap. 4, Membrane Bioreactor Process Design Water Reuse: Issues, Technologies, and Applications
Section 7.8, Analysis and Design of Membrane Bioreactor Processes Introduction to Water Resource Recovery Facility Design, 2nd Ed., Table 6.1 Existing Conditions
699
DRAFT
I. Membrane/Membrane Module Parameters
(Values typically available from membrane manufacturer or vendor - Enter values in yellow cells) Module packing density, φ = 182 m2
/m3 equals 55.5 ft2
/ft3
Specific Aer. Demand, SADM = 0.2 m3
air/hr/m2 membrane
equals 0.656 ft3
air/hr/ft2 membrane
Values given for MBR specific area (module packing density) range from 150 -334 m2/m3 II. Process Design Calculations (done by worksheet) in Table 8-35 of Metcalf & Eddy, Wastewater Engineering Treatment and Resource Recovery, 5th Ed., McGraw-Hill, 2014
Membrane Flux, J = 21.1 L/hr/m2 equals 0.518 gal/hr/ft2 Equations Used in the Calculations:

Membrane Area, AM = 241,123 ft2
Membrane Module Vol., VM = 4,347 ft3 Module packing density, φ, in ft2 /ft3
= (φ in m2
/m3
)/3.28084
Scouring Air Flow Required = 2,637 ft3
/min (ACFM) = 2,625 SCFM Specific Aeration Demand, SADM , in ft3 air/hr/ft2
membrane =
= SADM in m3
air/hr/m2
membrane/3.28084
(This is the scouring air flow rate needed for the membrane module, Membrane Flux, J, in L/hr/m2 = 0.4056Tww - 5.7278 (with Tww in o
F)
typically provided by a coarse bubble diffuser system.) (See Worksheet 6 for derivation of this eqution) Membrane Flux, J, in gal/hr/ft2 = [(Membrane Flux (J) in L/hr/m2 )/3.7854]/(3.280842
)
Copyright © McGraw-Hill Global Education Holdings, LLC. All rights reserved. Membrane Area, AM = (Qo*106/24)/J Membrane Module Volume, VM = AM/φ
Scouring Air Flow Required, ACFM = (SADM)(AM)/60 ACFM
Scouring Air Flow Req'd, SCFM = (ACFM)[(Tstd + 459.67)/(Tww + 459.67)](Patm/Pstd) SCFM MBR WW Treatment Process Design Calculations - U.S. Units Membrane Module Sizing Calculations

INPUTS CALCULATIONS
Discussion and References
For background information about Membrane Bioreactors (MBRs) see:

MLSS in Aer Tank, MLSS = 8,500 mg/L BOD
e = 10 mg/L
MLSS in Waste Sludge, X
w = 8,500 mg/L TSS
e = 10 mg/L
DO in Aer. Tank, DO
o =
2 mg/L NH
4-N
e = 1.0 mg/L
Number of Aeration Tanks =2 Tank Freeboard = 2.0 ft
Liquid Depth in Tank = 22 ft Tank L:W ratio = 2.3
Initial Estimate of NO
x = 44.93 mg/L (Tank L:W ratio is only used for
Note that an initial estimate is needed for NO
x rectangular tanks) As noted in all four of the above references, MLSS and X w for MBR processes are typically in
in cell D14 to start an iterative calculation of NO
x Influent TKN, TKN
o = 70 mg/L the range from 8,000 to 12,000 mg/L.
below. 80% of the influent TKN is suggested for (value transferred from Worksheet 2) this initial estimate. 80% of TKN
o = 56.0 mg/L
II. Calculate Design SRT
µmn at Tww = 0.70 lb VSS/d/lb VSS
K
n at
Tww
= 0.70 mg/L
kdn at Tww = 0.08 lb VSS/d/lb VSS Theor. SRT
= 3.96 days
µ
n = 0.25 lb VSS/d/lb VSS Design SRT
= 3.96 days
Flow Diagram - Membrane Bioreactor for BOD Removal & Nitrification III. Calculate the Biomass Production Rate
The biological treatment process design calculations for the MBR process are carried out using biological kinetics constants and equations typically used for completely mixed µ
m at Tww = 5.61 lb VSS/d/lb VSS bCODo
= 672 mg/L activated sludge systems as described in the following references:
k
d at Tww = 0.1154 lb VSS/d/lb VSS
S
= 1.404 mg bCOD/L
Biomass Production Rate, Px,bio = 5029 lb VSS/day
IV. Determine the Amount of Nitrogen Oxidized to Nitrate Equations Used in the Calculations:

µmn at Tww = (
µmn_20)*
θ
µmn
[((Tww-32)/1.8)-20]
Calculated amount of nitrogen oxidized to nitrate, NO
x = 44.932 mg/L
kdn at
Tww = (
kmn
_20)*
θ
kdn
[((Tww-32)/1.8)-20]
Difference between estimated and calculated values NO
x = 0.00000 mg/L
K
n at
Tww = (
K
n
_20)*
θ
Kn
[((Tww-32)/1.8)-20]
Goal Seek Result:

Amount of nitrogen oxidized to nitrate, NO
x = 44.93 mg/L
µ
n =
[
µmn
*NH
4-N
e/(K
n + NH
4-N
e)]*[DO
o/(0.5 + DO
o)] - kdn
Theor. SRT = 1/
µ
n
NOTE: This is an iterative solution. You must use Excel's "Goal Seek" to find the NO x value as Design SRT = (Theor. SRT)FS ( FS = TKN Peak/Ave Factor ) follows: Place the cursor on the green cell G42 and click on "goal seek" (in the "tools" menu or under "Data - What If Analysis" depending on the version of Excel). Enter values to "Set cell:" G42, "To µ
m at
Tww = (
µ
m
_20)*
θ
µm
[((Tww-32)/1.8)-20]
value:" 0, "By changing cell:" D14, and click on "OK". The calculated value of NO x will appear in cell
k
d at
Tww = (
k
m
_20)*
θ
k
d
[((Tww-32)/1.8)-20] bCODo = 1.6*BODo
F44 and G42 should be zero if the process worked properly. Note that cell D14 needs an initial estimate for NO
x in order for the iterative solution to work properly. S = K s*[1 +(k
d*SRT)]/[SRT*(
µ
m - k
d) - 1]
IV. Calc. the Prod. Rate and Mass of VSS and TSS in Aeration Basin Px,bio
= (Q
o*Y*(
µ
m - kd)*8.34/(1 + (kd*SRT)))
+ (fd*k
d*Qo*Y*(
µ
m - kd)SRT*8.34/(1 + (kd*SRT)))
+ (Q
o*Yn*NOx*8.34/(1 + (kdn*SRT)))
bpCOD/pCOD = 0.554 nbVSS = 115.9 mg/L
NO
x = TKN
o - NH
4-N
e - [(0.12 Px,bio/8.34)/Q
o
]
Aeration Tank VSS Production Rate, PX,VSS = 7928 lb VSS/day Aeration Tank TSS Production Rate, PX,TSS = 9656 lb TSS/day bpCOD/pCOD = (bCOD/BOD)*(BOD o - sBODo)/(CODo - sCODo
)
Mass of MLVSS = 31,413 lb VSS Mass of MLSS = 38,258 lb TSS nbVSS = [ 1 - (bpCOD/pCOD)]VSS o
Px,VSS = Px,bio + (Q
o*nbVSS*8.34)
Px,TSS = Px,VSS + [Q
o(TSS
o - VSSo)8.34]
V. Aeration Tank Calculations (User input needed in yellow cells) Mass of MLVSS = PX,VSS*SRT Mass of MLSS = PX,TSS*SRT
Req. Aeration Vol., Vaer,min = 72,149 ft
3 Click on green box & then on the arrow
Aer. + Membr. Vol., Vtot = 76,496 ft
3 to select tank shape Required Aeration Volume =
Vaer,min = (Mass of MLSS/(MLSS*8.34))*(10
6 /7.48)
Req. Vol. per tank, Vtank = 38,248 ft
3 Actual Tank Width = 38.3 ft
Calculated Tank Width = 27.6 ft Actual Tank Length = 71.8 ft Aeration Detntion Time, τ = (Vaer,act*7.48/10 6 )*N*24/Q
o
Calculated Tank Length = 63.9 ft Act. Aer. Vol., Vaer,act = 57,500 ft 3 Tank Wall Height = 23.7 ft Memb. Mod. Vol/Tank: 2,173 ft 3 Vol. BOD Loading =
Q
o*BOD
o*8.34/((Vaer,act/1000)*N)
Aer. Detention Time,
τaer = 6.9 hr MLVSS = 6,979 mg/L MLVSS = MLSS(Mass of MLVSS/Mass of MLSS) Vol. BOD Loading = 91.4 lb BOD/d/1000 ft
3 F:M ratio = Q
o*8.34*BOD
o/((MLVSS*8.34*(Vaer,act*7.48/10
6 )*N))
F:M ratio = 0.210 lb BOD/d/lb MLVSS
Sludge Wasting Rate,
Q
w = 217,112 gal/day
Q
w = ((N*Vaer,act*7.48/10
6 )*MLSS/(SRT*X
w))*10
6 Air Requirement/Blower Design Calculations
VI. User Inputs - Enter values in yellow cells only
Patm = 14.696*EXP[-32.17*MWair*Elev/(g
c*R*Tamb
)
Standard Design Elevation above This equation for Patm as a function of elev. above sea level and ambient temperature comes from:

O
2 transf. Effic., SOTE = 30.0% Sea Level, Elev = 225 ft (from diffuser mfr or vendor) ambient air Temp., Tamb = 70 o
F
Ratio of oxygen transfer rate in wastewater P
D = Patm + (62.4*ddiff/2)/144
ρair = MWair*Pstd /(10.73*(Tstd + 459.67))
to that in clean water, α = 0.5 Diffuser Fouling Factor, F = 0.8
Ratio of D.O. saturation in ww to that in clean lb/day O 2:
mO2 = Q
o*8.34*(BOD
o - BODe)/f - (1.42*Px,VSS) + (4.57*Q
o*8.34*NO
x
)
water at same T & P,
B = 1.0 Depth of Diffuser, ddiff = 21.7 ft
D.O sat'n conc. for clean water at ww Pressure drop across This equation for oxygen utilization rate comes from:
temp. & 1 atm, C
s = 9.3 mg/L diffuser,
∆Pdiff = 10.8 in H
2 O
NOTE: Derivation of the equation for
C
s as (from diffuser mfr or vendor)
a function of
Tww is shown in wksht 7. The equation below for the actual oxygen transfer efficiency, AOTE, is found as

VII. Air Requirement/Blower Design Calculations Note that for use in this equation Tww must be
converted to
o
C
Barom. Pressure,
Patm = 14.6 psia Des. Air Flow Rate, SCFM: 4,311 scfm
Pressure at Mid Depth,
P
D = 19.3 psia
Standard Air Density,
ρair = 0.07521 lb/ft
3 Des. Air Flow Rate, ACFM: 2591 acfm Design Air Flow Rate, SCFM = (mO2/AOTE)*MWair/(O 2_mole fraction*MW_O
2 *ρair_std*60*24
(from Ideal Gas Law) (at delivery point)
O
2 Utilization Rate,
mO2 = 8,976 lb/day Blower Outlet Press.,
PB2 = 24.38 psia Design Air Flow Rate, ACFM = SCFM*(Pstd/Pblower)*((Tww + 459.67)/(Tstd + 459.67)) Actual O
2 transf. Efficiency, AOTE = 8.33% Blower Outlet Press., PB2 = Patm +
∆Pdiff*0.036126 + 62.4*ddiff/144
(This is the air flow rate needed for the aeration tank, typically provided by a fine bubble diffuser system.) Alkalinity used for Nitrification, AlkNitrif = 7.14*NOx mg/L as CaCO 3 VIII. User Inputs and Constants- Enter value in yellow cell only Alkalinity needed = AlkNitrif + AlkEffl - Alk o mg/L as CaCO3
Alkalinity needed Alk_perday = (AlkNitrif + AlkEffl - Alk o)Qo*8.34 lb/day as CaCO3
Target Effluent Alkalinity = 20 mg/L as CaCO
3 Sodium Bicarbonate needed to maintain alkalinity = Alk_perday*84/50 lb/day NaHCO 3 Equiv. Weight of CaCO
3 = 50 g/equiv.

Equiv. Weight of NaHCO
3 = 84 g/equiv.

ALKALINITY REQUIREMENT
MBR WW Treatment Process Design Calculations - U.S. Units BOD Removal and Nitrification

INPUTS PROCESS DESIGN CALCULATIONS
rectangular
AER. TANK CALC'NS OXYGEN/AIR/BLOWER REQUIREMENTS
701
DRAFT
This worksheet makes the design calculations for preanoxic denitrification basin(s) to go with the Aeration Tank(s) designed for BOD removal and Nitrification in Worksheet 4. (Wastewater parameters/characteristics and biological kinetic coefficients entered on Worksheet 2 will also be used in this worksheet)
I. User Inputs - Enter values in yellow cells only
Effluent Nitrate conc., Ne = 5.0 mg/L Mixing Energy
Nitrate conc. in RAS, NRAS = 5.0 mg/L for Anoxic Reactor = 0.38 hp/103 ft3
Temp. Coeff. For SDNR = 1.026 . Design % Excess
Tank Freeboard = 2.3 ft Nitrif. Capacity = 2%
No. of Anoxic Tanks, Nan = 2 . Liquid Depth in Tank = 22 ft Est. of detention time, tan = 0.9654 hr Tank L:W ratio = 1 Note that an initial estimate is needed for (Tank L:W ratio is only used for anoxic detention time in cell D19 to start rectangular tanks) an iterative calculation of minimum required
anoxoc detention time below.

II. Calculate RAS Ratio and Anoxic Tank Active Biomass Conc.

Membrane Bioreactor for Preanoxic Denitrification
RAS ratio, RAS = 7.99 Aer. Tank Act. Biomass, Pxb = 4609 lb/d An. Tank MLSS, MLSSAN = 7554 mg/L The biological treatment process design calculations for the MBR process are carried Aeration Tank Active Biomass Fraction, Xaer,b = 0.4773 out using biological kinetics constants and equations typically used for completely mixed Anoxic Tank Active Biomass Conc., Xan,b = 3606 mg/L activated sludge systems as described in the following references:

III. Calc Feed Rate of NOx to Anoxic Tank and Anoxic Tank Volume RAS ratio, RAS = (NOx/NRAS) - 1
Aer Tank Act. Biomass, Pxb = [Qo*Y*(bCODo - S)*8.34]/[1 + (kd*SRT)] Flow rate to Anoxic Tank = 24.0 MGD Anaer. Tank MLSS, MLSSAN = [RAS/(RAS + 1)] MLSSw (RAS flow containing nitrate) Anoxic Tank Volume, Van = 16,132 ft3 Aeration Tank Active Biomass Fraction, Xaer,b = Pxb/Px,vss NOx rate to Anoxic Tank = 999 lb/day (based on detention time value in cell D19) Anoxic Tank Active Biomass Conc., Xan,b = Xaer,b*MLSSAN Flow Rate to Anoxic Tank , QAN = RAS*Qo
IV. Calculate the SDNR (Specific Denitrification Rate) NOx Rate to Anoxic Tank = QAN*NRAS*8.34 Anoxic Tank Volume, Van = (Qo*106
/7.48)*tAN/24
Anoxic Tank F/M ratio = 2.8979 lb BOD/day/lb MLVSS Anoxic Tank F:M ratio, F:M = Qo*BODo*8.34/((Van*7.48/106 )*Xan,b/8.34)
rbCODo/bCODo ratio = 0.1275
Next lower rbCOD/bCOD value from table = 0.1 Coefficients for: SDNR = bo + b1 [ln(F:M)] The SDNR equation, Next higher rbCOD/bCOD value from table = 0.2 rbCOD/bCOD bo b1 coefficient values, SDNR for rbCOD/bCOD = 0.1 is equal to 0.26899 0.1 0.186 0.078 and temperature SDNR for rbCOD/bCOD = 0.2 is equal to 0.33855 0.2 0.213 0.118 correction equations

0.3 0.235 0.141 are from: Metcalf & Eddy,
SDNR for rbCOD/bCOD = 0.1275 is equal to 0.2881 0.4 0.242 0.152 Wastewater Engineering ( at 20o
C) 0.5 0.27 0.162 Treatment and Resource
SDNR at Tww = 0.2808 lb NO3-N/day/lb biomass (at Tww) 0.10 0.1860 0.0780 Recovery , 5th Ed.,

0.20 0.2130 0.1180 McGraw-Hill, 2014
V. Calculate Anoxic Tank Volume, Dimensions, and Detention Time Note that for F:M < 0.5, SDNR at 20o C is calculated as: SDNR = 0.24*F:M
SDNR at Tww = (SDNR at 20o
C)*θSDNR
[((Tww-32)/1.8)-20]
NO3-N reduction capacity = 1019 lb/day % Excess Nitrif Capacity = 2.0% NO3-N reduction capacity = (Van*7.48/106
)*SDNR*Xan,b*8.34
Difference between Design and Calculated % Excess Nitrif. Capacity = 0.000 % Excess Nitrif. Capac. = (N03-N Reduction Capacity - NOx Rate to Anoxic Tank) Anoxic Tank min. Vol, Van = ft3 NOx Rate to Anoxic Tank Min. Anoxic Det'n Time, tan = hr Min. Anoxic Det'n Time, tan = Van*24/(Qo*106 /7.48)
Min. Vol. per Tank, Vtank = Van/Nan
NOTE: This is an iterative solution. You must use Excel's "Goal Seek" to find the Van and tan values as follows: Place the cursor on the green cell G64 and click on "goal seek" (in the "tools" menu or under "Data - What If Analysis" depending on the version of Excel). Enter values to "Set cell" G64 "To value:" 0, "By changing cell:" D19, and click on "OK". The calculated values Oxygen credit for nitrate reduction = 2.86 Qo(NOx - Ne) of Van and tan will be in cells D66 and D68. Cell G64 should be zero if the process worked right.

A preliminary estimate for tan is needed in cell D19 in order for the iterative solution to work.

Alkalinity produced by nitrate reduction = 3.57(NOx - Ne) Min. Vol. per tank, Vtank = 8,066 ft3 Click on green box & then on the arrow Calculated Tank Width = 19.3 ft to select tank shape Sludge Wasting Rate:

Calculated Tank Length = 19.3 ft Actual Tank Width = 28.0 ft Qw = [((Vaer*MLSS + Vanox*Xb)/SRT)]/(TSSw) Tank Wall Height = 24.0 ft Actual Tank Length = 38.0 ft Act. Tank Liq. Vol. = 23,089 ft3
Anoxic Detention Time, τan = 2.763 hr (Preanoxic Tank Liquid Volume) VI. Calc. Revised Air Requirement & Alkalinity Requirement, Mixing Power & Sludge Wasting Rate
Oxygen Credit = 2857 lb/day equals: 119.1 lb/hr
O2 Utilization Rate = 255 lb/hr
Required Air Flow Rate (in Aeration Tank), SCFM = 2938.6 SCFM Required Air Flow Rate (in Aeration Tank), ACFM = 1766.0 ACFM Alkalinity Produced = 142.6 mg/L as CaCO3
Alkalinity Needed = -101.7 mg/L as CaCO3
Alkalinity Needed = -2546 lb/day as CaCO3
Sodum Bicarbonate Needed per Day to Maintain Alkalinity (lb/day NaHCO3) = -4277 Required Anoxic Tank Mixing Power = 17.5 hp
Sludge Wasting Rate = 254,094 gal/day
Copyright © McGraw-Hill Global Education Holdings, LLC. All rights reserved. rectangular
cylindrical
Water and Wastewater Calculations Manual, 3rd Ed., Sec. 6.21, Activated Sludge Process Handbook of Environmental Eng. Calculations, 2nd Ed., Sec. 1.7.21, Activated Sludge Process MBR WW Treatment Process Design Calculations - U.S. Units PreAnoxic Denitrification
INPUTS
Discussion and References
For background information about Membrane Bioreactors (MBRs) see:

FINAL CALCULATIONS

0.97 rectangular

TANK VOLUME AND DIMENSIONS PROCESS DESIGN CALCULATIONS
16,132
702
DRAFT
I. Wastewater Parameters/Characteristics Enter values in yellow cells only.

Design ww Flow Rate, Qo = 3.51 MGD Influent TSS, TSSo = 329 mg/L Influent BOD, BODo = 420 mg/L Influent VSS, VSSo = 260 mg/L Influent sBOD, sBODo = 168 mg/L
Influent TKN, TKNo = 70 mg/L
Influent COD, CODo = 857 mg/L TKN peak/ave factor, FS = 1.0 Influent sCOD, sCODo = 129 mg/L Influent NH4-N, NH4-No = 42 mg/L Influent rbCOD, rbCODo = 86 mg/L Influent Alkalinity, Alko = 300 (mg/L as CaCO3)
ratio, bCOD/BOD = 1.6 Aeration WW Temp, Tww = 66.2 o
F
II. Biological Kinetic Coefficients - For BOD Removal
Synth. Yield Coeff., Y = 0.40 lb VSS/lb bCOD Half Veloc. Coeff., Ks = 20 mg/L Temp coeff., q, for mm = 1.07 Temp coeff., q, for kd = 1.04 Resid. biomass fract., fd = 0.15
Max spec. gwth rate at 20o
C, µm20 = 6 lb VSS/d/lb VSS
Endog. Decay coeff. at 20o
C, kd20 = 0.12 lb VSS/d/lb VSS
III. Biological Kinetic Coefficients - For Nitrification The source for the values in the table above is:

Design of Water Resource Recovery Facilities, 6th Ed., Sec. 12.6 Membrane Bioreactors Water and Wastewater Engineering: Design Principles and Practice Section 23.8, Membrane Bioreactor Design Practice
Membrane Bioreactors: WEF MOP No. 36, Chap. 4, Membrane Bioreactor Process Design Water Reuse: Issues, Technologies, and Applications
Section 7.8, Analysis and Design of Membrane Bioreactor Processes Introduction to Water Resource Recovery Facility Design, 2nd Ed., Table 6.1 Near-Term Conditions
703
DRAFT
I. Membrane/Membrane Module Parameters
(Values typically available from membrane manufacturer or vendor - Enter values in yellow cells) Module packing density, φ = 148 m2
/m3 equals 45.0 ft2
/ft3
Specific Aer. Demand, SADM = 0.2 m3
air/hr/m2 membrane
equals 0.656 ft3
air/hr/ft2 membrane
Values given for MBR specific area (module packing density) range from 150 -334 m2/m3 II. Process Design Calculations (done by worksheet) in Table 8-35 of Metcalf & Eddy, Wastewater Engineering Treatment and Resource Recovery, 5th Ed., McGraw-Hill, 2014
Membrane Flux, J = 21.1 L/hr/m2 equals 0.518 gal/hr/ft2 Equations Used in the Calculations:

Membrane Area, AM = 282,113 ft2
Membrane Module Vol., VM = 6,271 ft3 Module packing density, φ, in ft2 /ft3
= (φ in m2
/m3
)/3.28084
Scouring Air Flow Required = 3,085 ft3
/min (ACFM) = 3,071 SCFM Specific Aeration Demand, SADM , in ft3 air/hr/ft2
membrane =
= SADM in m3
air/hr/m2
membrane/3.28084
(This is the scouring air flow rate needed for the membrane module, Membrane Flux, J, in L/hr/m2 = 0.4056Tww - 5.7278 (with Tww in o
F)
typically provided by a coarse bubble diffuser system.) (See Worksheet 6 for derivation of this eqution) Membrane Flux, J, in gal/hr/ft2 = [(Membrane Flux (J) in L/hr/m2 )/3.7854]/(3.280842
)
Copyright © McGraw-Hill Global Education Holdings, LLC. All rights reserved. Membrane Area, AM = (Qo*106/24)/J Membrane Module Volume, VM = AM/φ
Scouring Air Flow Required, ACFM = (SADM)(AM)/60 ACFM
Scouring Air Flow Req'd, SCFM = (ACFM)[(Tstd + 459.67)/(Tww + 459.67)](Patm/Pstd) SCFM MBR WW Treatment Process Design Calculations - U.S. Units Membrane Module Sizing Calculations

INPUTS CALCULATIONS
Discussion and References
For background information about Membrane Bioreactors (MBRs) see:

MLSS in Aer Tank, MLSS = 8,500 mg/L BODe = 10 mg/L
MLSS in Waste Sludge, Xw = 8,500 mg/L TSSe = 10 mg/L
DO in Aer. Tank, DOo = 2 mg/L NH4-Ne = 1.0 mg/L
Number of Aeration Tanks = 2 Tank Freeboard = 2.0 ft
Liquid Depth in Tank = 22 ft Tank L:W ratio = 2.3
Initial Estimate of NOx = 44.93 mg/L (Tank L:W ratio is only used for Note that an initial estimate is needed for NOx rectangular tanks) As noted in all four of the above references, MLSS and Xw for MBR processes are typically in in cell D14 to start an iterative calculation of NOx Influent TKN, TKNo = 70 mg/L the range from 8,000 to 12,000 mg/L. below. 80% of the influent TKN is suggested for (value transferred from Worksheet 2) this initial estimate. 80% of TKNo = 56.0 mg/L
II. Calculate Design SRT
µmn at Tww = 0.70 lb VSS/d/lb VSS Kn at Tww = 0.70 mg/L kdn at Tww = 0.08 lb VSS/d/lb VSS Theor. SRT = 3.96 days µn = 0.25 lb VSS/d/lb VSS Design SRT = 3.96 days
Flow Diagram - Membrane Bioreactor for BOD Removal & Nitrification III. Calculate the Biomass Production Rate
The biological treatment process design calculations for the MBR process are carried out using biological kinetics constants and equations typically used for completely mixed µm at Tww = 5.61 lb VSS/d/lb VSS bCODo = 672 mg/L activated sludge systems as described in the following references:
kd at Tww = 0.1154 lb VSS/d/lb VSS S = 1.404 mg bCOD/L
Biomass Production Rate, Px,bio = 5883 lb VSS/day
IV. Determine the Amount of Nitrogen Oxidized to Nitrate Equations Used in the Calculations:
µmn at Tww = (µmn_20)*θµmn
[((Tww-32)/1.8)-20]
Calculated amount of nitrogen oxidized to nitrate, NOx = 44.932 mg/L kdn at Tww = (kmn_20)*θkdn [((Tww-32)/1.8)-20]
Difference between estimated and calculated values NOx = 0.00000 mg/L Kn at Tww = (Kn_20)*θKn [((Tww-32)/1.8)-20]
Goal Seek Result:

Amount of nitrogen oxidized to nitrate, NOx = 44.93 mg/L µn = [µmn*NH4-Ne/(Kn + NH4-Ne)]*[DOo/(0.5 + DOo)] - kdn Theor. SRT = 1/µn
NOTE: This is an iterative solution. You must use Excel's "Goal Seek" to find the NOx value as Design SRT = (Theor. SRT)FS ( FS = TKN Peak/Ave Factor ) follows: Place the cursor on the green cell G42 and click on "goal seek" (in the "tools" menu or under "Data - What If Analysis" depending on the version of Excel). Enter values to "Set cell:" G42, "To µm at Tww = (µm_20)*θµm [((Tww-32)/1.8)-20]
value:" 0, "By changing cell:" D14, and click on "OK". The calculated value of NOx will appear in cell kd at Tww = (km_20)*θkd [((Tww-32)/1.8)-20] bCODo = 1.6*BODo
F44 and G42 should be zero if the process worked properly. Note that cell D14 needs an initial estimate for NOx in order for the iterative solution to work properly. S = Ks*[1 +(kd*SRT)]/[SRT*(µm - kd) - 1] IV. Calc. the Prod. Rate and Mass of VSS and TSS in Aeration Basin Px,bio = (Qo*Y*(µm - kd)*8.34/(1 + (kd*SRT))) + (fd*kd*Qo*Y*(µm - kd)SRT*8.34/(1 + (kd*SRT)))
+ (Qo*Yn*NOx*8.34/(1 + (kdn*SRT)))
bpCOD/pCOD = 0.554 nbVSS = 115.9 mg/L
NOx = TKNo - NH4-Ne - [(0.12 Px,bio/8.34)/Qo]
Aeration Tank VSS Production Rate, PX,VSS = 9276 lb VSS/day Aeration Tank TSS Production Rate, PX,TSS = 11298 lb TSS/day bpCOD/pCOD = (bCOD/BOD)*(BODo - sBODo)/(CODo - sCODo) Mass of MLVSS = 36,753 lb VSS Mass of MLSS = 44,762 lb TSS nbVSS = [ 1 - (bpCOD/pCOD)]VSSo Px,VSS = Px,bio + (Qo*nbVSS*8.34) Px,TSS = Px,VSS + [Qo(TSSo - VSSo)8.34] V. Aeration Tank Calculations (User input needed in yellow cells) Mass of MLVSS = PX,VSS*SRT Mass of MLSS = PX,TSS*SRT
Req. Aeration Vol., Vaer,min = 84,415 ft3 Click on green box & then on the arrow Aer. + Membr. Vol., Vtot = 90,686 ft3 to select tank shape Required Aeration Volume = Vaer,min = (Mass of MLSS/(MLSS*8.34))*(106 /7.48)
Req. Vol. per tank, Vtank = 45,343 ft3 Actual Tank Width = 38.3 ft Calculated Tank Width = 30.0 ft Actual Tank Length = 71.8 ft Aeration Detntion Time, τ = (Vaer,act*7.48/106)*N*24/Qo Calculated Tank Length = 69.6 ft Act. Aer. Vol., Vaer,act = 56,538 ft3 Tank Wall Height = 23.7 ft Memb. Mod. Vol/Tank: 3,135 ft3 Vol. BOD Loading = Qo*BODo*8.34/((Vaer,act/1000)*N)
Aer. Detention Time, τaer = 5.8 hr MLVSS = 6,979 mg/L MLVSS = MLSS(Mass of MLVSS/Mass of MLSS) Vol. BOD Loading = 108.8 lb BOD/d/1000 ft3 F:M ratio = Qo*8.34*BODo/((MLVSS*8.34*(Vaer,act*7.48/106 )*N))
F:M ratio = 0.250 lb BOD/d/lb MLVSS
Sludge Wasting Rate, Qw = 213,479 gal/day Qw = ((N*Vaer,act*7.48/106 )*MLSS/(SRT*Xw))*106
Air Requirement/Blower Design Calculations
VI. User Inputs - Enter values in yellow cells only
Patm = 14.696*EXP[-32.17*MWair*Elev/(gc*R*Tamb)
Membrane Bioreactors: WEF MOP No. 36, Chap. 4, Membrane Bioreactor Process Design Water Reuse: Issues, Technologies, and Applications
Section 7.8, Analysis and Design of Membrane Bioreactor Processes Water and Wastewater Calculations Manual, 3rd Ed., Sec. 6.21, Activated Sludge Process Handbook of Environmental Eng. Calculations, 2nd Ed., Sec. 1.7.21, Activated Sludge Process Discussion and References
For background information about Membrane Bioreactors (MBRs) see:

INPUTS PROCESS DESIGN CALCULATIONS
rectangular
AER. TANK CALC'NS S
705
DRAFT
Standard Design Elevation above This equation for Patm as a function of elev. above sea level and ambient temperature comes from:

O2 transf. Effic., SOTE = 30.0% Sea Level, Elev = 225 ft (from diffuser mfr or vendor) ambient air Temp., Tamb = 70 o F
Ratio of oxygen transfer rate in wastewater PD = Patm + (62.4*ddiff/2)/144 ρair = MWair*Pstd /(10.73*(Tstd + 459.67)) to that in clean water, α = 0.5 Diffuser Fouling Factor, F = 0.8 Ratio of D.O. saturation in ww to that in clean lb/day O2: mO2 = Qo*8.34*(BODo - BODe)/f - (1.42*Px,VSS) + (4.57*Qo*8.34*NOx) water at same T & P, B = 1.0 Depth of Diffuser, ddiff = 21.7 ft D.O sat'n conc. for clean water at ww Pressure drop across This equation for oxygen utilization rate comes from:
temp. & 1 atm, Cs = 9.3 mg/L diffuser, ∆Pdiff = 10.8 in H2O NOTE: Derivation of the equation for Cs as (from diffuser mfr or vendor) a function of Tww is shown in wksht 7. The equation below for the actual oxygen transfer efficiency, AOTE, is found as

VII. Air Requirement/Blower Design Calculations Note that for use in this equation Tww must be
converted to o
C
Barom. Pressure, Patm = 14.6 psia Des. Air Flow Rate, SCFM: 5,044 scfm Pressure at Mid Depth, PD = 19.3 psia
Standard Air Density, ρair = 0.07521 lb/ft3 Des. Air Flow Rate, ACFM: 3031 acfm Design Air Flow Rate, SCFM = (mO2/AOTE)*MWair/(O2_mole fraction*MW_O2*ρair_std*60*24 (from Ideal Gas Law) (at delivery point)
O2 Utilization Rate, mO2 = 10,502 lb/day Blower Outlet Press., PB2 = 24.38 psia Design Air Flow Rate, ACFM = SCFM*(Pstd/Pblower)*((Tww + 459.67)/(Tstd + 459.67)) Actual O2 transf. Efficiency, AOTE = 8.33% Blower Outlet Press., PB2 = Patm + ∆Pdiff*0.036126 + 62.4*ddiff/144 (This is the air flow rate needed for the aeration tank, typically provided by a fine bubble diffuser system.) Alkalinity used for Nitrification, AlkNitrif = 7.14*NOx mg/L as CaCO3 VIII. User Inputs and Constants- Enter value in yellow cell only Alkalinity needed = AlkNitrif + AlkEffl - Alko mg/L as CaCO3 Alkalinity needed Alk_perday = (AlkNitrif + AlkEffl - Alko)Qo*8.34 lb/day as CaCO3 Target Effluent Alkalinity = 20 mg/L as CaCO3
Sodium Bicarbonate needed to maintain alkalinity = Alk_perday*84/50 lb/day NaHCO3 Equiv. Weight of CaCO3 = 50 g/equiv.

Equiv. Weight of NaHCO3 = 84 g/equiv.

ALKALINITY REQUIREMENT OXYGEN/AIR/BLOWER REQUIREMENTS
706
DRAFT
This worksheet makes the design calculations for preanoxic denitrification basin(s) to go with the Aeration Tank(s) designed for BOD removal and Nitrification in Worksheet 4. (Wastewater parameters/characteristics and biological kinetic coefficients entered on Worksheet 2 will also be used in this worksheet)
I. User Inputs - Enter values in yellow cells only
Effluent Nitrate conc., Ne = 5.0 mg/L Mixing Energy
Nitrate conc. in RAS, NRAS = 5.0 mg/L for Anoxic Reactor = 0.38 hp/103 ft3
Temp. Coeff. For SDNR = 1.026 . Design % Excess
Tank Freeboard = 2.3 ft Nitrif. Capacity = 2%
No. of Anoxic Tanks, Nan = 2 . Liquid Depth in Tank = 22 ft Est. of detention time, tan = 0.9654 hr Tank L:W ratio = 1 Note that an initial estimate is needed for (Tank L:W ratio is only used for anoxic detention time in cell D19 to start rectangular tanks) an iterative calculation of minimum required
anoxoc detention time below.

II. Calculate RAS Ratio and Anoxic Tank Active Biomass Conc.

Membrane Bioreactor for Preanoxic Denitrification
RAS ratio, RAS = 7.99 Aer. Tank Act. Biomass, Pxb = 5393 lb/d An. Tank MLSS, MLSSAN = 7554 mg/L The biological treatment process design calculations for the MBR process are carried Aeration Tank Active Biomass Fraction, Xaer,b = 0.4773 out using biological kinetics constants and equations typically used for completely mixed Anoxic Tank Active Biomass Conc., Xan,b = 3606 mg/L activated sludge systems as described in the following references:

III. Calc Feed Rate of NOx to Anoxic Tank and Anoxic Tank Volume RAS ratio, RAS = (NOx/NRAS) - 1
Aer Tank Act. Biomass, Pxb = [Qo*Y*(bCODo - S)*8.34]/[1 + (kd*SRT)] Flow rate to Anoxic Tank = 28.0 MGD Anaer. Tank MLSS, MLSSAN = [RAS/(RAS + 1)] MLSSw (RAS flow containing nitrate) Anoxic Tank Volume, Van = 18,875 ft3 Aeration Tank Active Biomass Fraction, Xaer,b = Pxb/Px,vss NOx rate to Anoxic Tank = 1169 lb/day (based on detention time value in cell D19) Anoxic Tank Active Biomass Conc., Xan,b = Xaer,b*MLSSAN Flow Rate to Anoxic Tank , QAN = RAS*Qo
IV. Calculate the SDNR (Specific Denitrification Rate) NOx Rate to Anoxic Tank = QAN*NRAS*8.34 Anoxic Tank Volume, Van = (Qo*106
/7.48)*tAN/24
Anoxic Tank F/M ratio = 2.8979 lb BOD/day/lb MLVSS Anoxic Tank F:M ratio, F:M = Qo*BODo*8.34/((Van*7.48/106 )*Xan,b/8.34)
rbCODo/bCODo ratio = 0.1275
Next lower rbCOD/bCOD value from table = 0.1 Coefficients for: SDNR = bo + b1 [ln(F:M)] The SDNR equation, Next higher rbCOD/bCOD value from table = 0.2 rbCOD/bCOD bo b1 coefficient values, SDNR for rbCOD/bCOD = 0.1 is equal to 0.26899 0.1 0.186 0.078 and temperature SDNR for rbCOD/bCOD = 0.2 is equal to 0.33855 0.2 0.213 0.118 correction equations

0.20 0.2130 0.1180 McGraw-Hill, 2014
V. Calculate Anoxic Tank Volume, Dimensions, and Detention Time Note that for F:M < 0.5, SDNR at 20o C is calculated as: SDNR = 0.24*F:M
SDNR at Tww = (SDNR at 20oC)*θSDNR
[((Tww-32)/1.8)-20]
NO3-N reduction capacity = 1192 lb/day % Excess Nitrif Capacity = 2.0% NO3-N reduction capacity = (Van*7.48/106)*SDNR*Xan,b*8.34 Difference between Design and Calculated % Excess Nitrif. Capacity = 0.000 % Excess Nitrif. Capac. = (N03-N Reduction Capacity - NOx Rate to Anoxic Tank) Anoxic Tank min. Vol, Van = ft3 NOx Rate to Anoxic Tank Min. Anoxic Det'n Time, tan = hr Min. Anoxic Det'n Time, tan = Van*24/(Qo*106 /7.48)
Min. Vol. per Tank, Vtank = Van/Nan
NOTE: This is an iterative solution. You must use Excel's "Goal Seek" to find the Van and tan values as follows: Place the cursor on the green cell G64 and click on "goal seek" (in the "tools" menu or under "Data - What If Analysis" depending on the version of Excel). Enter values to "Set cell" G64 "To value:" 0, "By changing cell:" D19, and click on "OK". The calculated values Oxygen credit for nitrate reduction = 2.86 Qo(NOx - Ne) of Van and tan will be in cells D66 and D68. Cell G64 should be zero if the process worked right.

A preliminary estimate for tan is needed in cell D19 in order for the iterative solution to work.

Alkalinity produced by nitrate reduction = 3.57(NOx - Ne) Min. Vol. per tank, Vtank = 9,437 ft3 Click on green box & then on the arrow Calculated Tank Width = 20.9 ft to select tank shape Sludge Wasting Rate:

Calculated Tank Length = 20.9 ft Actual Tank Width = 28.0 ft Qw = [((Vaer*MLSS + Vanox*Xb)/SRT)]/(TSSw) Tank Wall Height = 24.0 ft Actual Tank Length = 38.0 ft Act. Tank Liq. Vol. = 23,089 ft3
Anoxic Detention Time, τan = 2.362 hr (Preanoxic Tank Liquid Volume) VI. Calc. Revised Air Requirement & Alkalinity Requirement, Mixing Power & Sludge Wasting Rate
Oxygen Credit = 3343 lb/day equals: 139.3 lb/hr
O2 Utilization Rate = 298 lb/hr
Water and Wastewater Calculations Manual, 3rd Ed., Sec. 6.21, Activated Sludge Process Handbook of Environmental Eng. Calculations, 2nd Ed., Sec. 1.7.21, Activated Sludge Process MBR WW Treatment Process Design Calculations - U.S. Units PreAnoxic Denitrification
INPUTS
Discussion and References
For background information about Membrane Bioreactors (MBRs) see:

0.97 rectangular

TANK VOLUME AND DIMENSIONS PROCESS DESIGN CALCULATIONS
18,875
707
DRAFT
Required Air Flow Rate (in Aeration Tank), SCFM = 3438.1 SCFM Required Air Flow Rate (in Aeration Tank), ACFM = 2066.2 ACFM Alkalinity Produced = 142.6 mg/L as CaCO3
Alkalinity Needed = -101.7 mg/L as CaCO3
Alkalinity Needed = -2978 lb/day as CaCO3
Sodum Bicarbonate Needed per Day to Maintain Alkalinity (lb/day NaHCO3) = -5004 Required Anoxic Tank Mixing Power = 17.5 hp
Sludge Wasting Rate = 250,461 gal/day
Copyright © McGraw-Hill Global Education Holdings, LLC. All rights reserved. rectangular
cylindrical FINAL CALCULAT
708
DRAFT
I. Wastewater Parameters/Characteristics Enter values in yellow cells only.

Design ww Flow Rate, Qo = 4.12 MGD Influent TSS, TSSo = 329 mg/L Influent BOD, BODo = 420 mg/L Influent VSS, VSSo = 260 mg/L Influent sBOD, sBODo = 168 mg/L
Influent TKN, TKNo = 70 mg/L
Influent COD, CODo = 857 mg/L TKN peak/ave factor, FS = 1.0 Influent sCOD, sCODo = 129 mg/L Influent NH4-N, NH4-No = 42 mg/L Influent rbCOD, rbCODo = 86 mg/L Influent Alkalinity, Alko = 300 (mg/L as CaCO3)
ratio, bCOD/BOD = 1.6 Aeration WW Temp, Tww = 66.2 o
F
II. Biological Kinetic Coefficients - For BOD Removal
Synth. Yield Coeff., Y = 0.40 lb VSS/lb bCOD Half Veloc. Coeff., Ks = 20 mg/L Temp coeff., q, for mm = 1.07 Temp coeff., q, for kd = 1.04 Resid. biomass fract., fd = 0.15
Max spec. gwth rate at 20o
C, µm20 = 6 lb VSS/d/lb VSS
Endog. Decay coeff. at 20o
C, kd20 = 0.12 lb VSS/d/lb VSS
III. Biological Kinetic Coefficients - For Nitrification The source for the values in the table above is:

Design of Water Resource Recovery Facilities, 6th Ed., Sec. 12.6 Membrane Bioreactors Water and Wastewater Engineering: Design Principles and Practice Section 23.8, Membrane Bioreactor Design Practice
Membrane Bioreactors: WEF MOP No. 36, Chap. 4, Membrane Bioreactor Process Design Water Reuse: Issues, Technologies, and Applications
Section 7.8, Analysis and Design of Membrane Bioreactor Processes Introduction to Water Resource Recovery Facility Design, 2nd Ed., Table 6.1 Ultimate Conditions
709
DRAFT
I. Membrane/Membrane Module Parameters
(Values typically available from membrane manufacturer or vendor - Enter values in yellow cells) Module packing density, φ = 148 m2
/m3 equals 45.0 ft2
/ft3
Specific Aer. Demand, SADM = 0.2 m3
air/hr/m2 membrane
equals 0.656 ft3
air/hr/ft2 membrane
Values given for MBR specific area (module packing density) range from 150 -334 m2/m3 II. Process Design Calculations (done by worksheet) in Table 8-35 of Metcalf & Eddy, Wastewater Engineering Treatment and Resource Recovery, 5th Ed., McGraw-Hill, 2014
Membrane Flux, J = 21.1 L/hr/m2 equals 0.518 gal/hr/ft2 Equations Used in the Calculations:

Membrane Area, AM = 331,142 ft2
Membrane Module Vol., VM = 7,361 ft3 Module packing density, φ, in ft2 /ft3
= (φ in m2
/m3
)/3.28084
Scouring Air Flow Required = 3,621 ft3
/min (ACFM) = 3,605 SCFM Specific Aeration Demand, SADM , in ft3 air/hr/ft2
membrane =
= SADM in m3
air/hr/m2
membrane/3.28084
(This is the scouring air flow rate needed for the membrane module, Membrane Flux, J, in L/hr/m2 = 0.4056Tww - 5.7278 (with Tww in o
F)
typically provided by a coarse bubble diffuser system.) (See Worksheet 6 for derivation of this eqution) Membrane Flux, J, in gal/hr/ft2 = [(Membrane Flux (J) in L/hr/m2 )/3.7854]/(3.280842
)
Copyright © McGraw-Hill Global Education Holdings, LLC. All rights reserved. Membrane Area, AM = (Qo*106/24)/J Membrane Module Volume, VM = AM/φ
Scouring Air Flow Required, ACFM = (SADM)(AM)/60 ACFM
Scouring Air Flow Req'd, SCFM = (ACFM)[(Tstd + 459.67)/(Tww + 459.67)](Patm/Pstd) SCFM MBR WW Treatment Process Design Calculations - U.S. Units Membrane Module Sizing Calculations

INPUTS CALCULATIONS
Discussion and References
For background information about Membrane Bioreactors (MBRs) see:

MLSS in Aer Tank, MLSS = 8,500 mg/L BODe = 10 mg/L
MLSS in Waste Sludge, Xw = 8,500 mg/L TSSe = 10 mg/L
DO in Aer. Tank, DOo = 2 mg/L NH4-Ne = 1.0 mg/L
Number of Aeration Tanks = 2 Tank Freeboard = 2.0 ft
Liquid Depth in Tank = 22 ft Tank L:W ratio = 2.3
Initial Estimate of NOx = 44.93 mg/L (Tank L:W ratio is only used for Note that an initial estimate is needed for NOx rectangular tanks) As noted in all four of the above references, MLSS and Xw for MBR processes are typically in in cell D14 to start an iterative calculation of NOx Influent TKN, TKNo = 70 mg/L the range from 8,000 to 12,000 mg/L. below. 80% of the influent TKN is suggested for (value transferred from Worksheet 2) this initial estimate. 80% of TKNo = 56.0 mg/L
II. Calculate Design SRT
µmn at Tww = 0.70 lb VSS/d/lb VSS Kn at Tww = 0.70 mg/L kdn at Tww = 0.08 lb VSS/d/lb VSS Theor. SRT = 3.96 days µn = 0.25 lb VSS/d/lb VSS Design SRT = 3.96 days
Flow Diagram - Membrane Bioreactor for BOD Removal & Nitrification III. Calculate the Biomass Production Rate
The biological treatment process design calculations for the MBR process are carried out using biological kinetics constants and equations typically used for completely mixed µm at Tww = 5.61 lb VSS/d/lb VSS bCODo = 672 mg/L activated sludge systems as described in the following references:
kd at Tww = 0.1154 lb VSS/d/lb VSS S = 1.404 mg bCOD/L
Biomass Production Rate, Px,bio = 6906 lb VSS/day
IV. Determine the Amount of Nitrogen Oxidized to Nitrate Equations Used in the Calculations:
µmn at Tww = (µmn_20)*θµmn
[((Tww-32)/1.8)-20]
Calculated amount of nitrogen oxidized to nitrate, NOx = 44.932 mg/L kdn at Tww = (kmn_20)*θkdn [((Tww-32)/1.8)-20]
Difference between estimated and calculated values NOx = 0.00000 mg/L Kn at Tww = (Kn_20)*θKn [((Tww-32)/1.8)-20]
Goal Seek Result:

Amount of nitrogen oxidized to nitrate, NOx = 44.93 mg/L µn = [µmn*NH4-Ne/(Kn + NH4-Ne)]*[DOo/(0.5 + DOo)] - kdn Theor. SRT = 1/µn
NOTE: This is an iterative solution. You must use Excel's "Goal Seek" to find the NOx value as Design SRT = (Theor. SRT)FS ( FS = TKN Peak/Ave Factor ) follows: Place the cursor on the green cell G42 and click on "goal seek" (in the "tools" menu or under "Data - What If Analysis" depending on the version of Excel). Enter values to "Set cell:" G42, "To µm at Tww = (µm_20)*θµm [((Tww-32)/1.8)-20]
value:" 0, "By changing cell:" D14, and click on "OK". The calculated value of NOx will appear in cell kd at Tww = (km_20)*θkd [((Tww-32)/1.8)-20] bCODo = 1.6*BODo
F44 and G42 should be zero if the process worked properly. Note that cell D14 needs an initial estimate for NOx in order for the iterative solution to work properly. S = Ks*[1 +(kd*SRT)]/[SRT*(µm - kd) - 1] IV. Calc. the Prod. Rate and Mass of VSS and TSS in Aeration Basin Px,bio = (Qo*Y*(µm - kd)*8.34/(1 + (kd*SRT))) + (fd*kd*Qo*Y*(µm - kd)SRT*8.34/(1 + (kd*SRT)))
+ (Qo*Yn*NOx*8.34/(1 + (kdn*SRT)))
bpCOD/pCOD = 0.554 nbVSS = 115.9 mg/L
NOx = TKNo - NH4-Ne - [(0.12 Px,bio/8.34)/Qo]
Aeration Tank VSS Production Rate, PX,VSS = 10888 lb VSS/day Aeration Tank TSS Production Rate, PX,TSS = 13261 lb TSS/day bpCOD/pCOD = (bCOD/BOD)*(BODo - sBODo)/(CODo - sCODo) Mass of MLVSS = 43,141 lb VSS Mass of MLSS = 52,541 lb TSS nbVSS = [ 1 - (bpCOD/pCOD)]VSSo Px,VSS = Px,bio + (Qo*nbVSS*8.34) Px,TSS = Px,VSS + [Qo(TSSo - VSSo)8.34] V. Aeration Tank Calculations (User input needed in yellow cells) Mass of MLVSS = PX,VSS*SRT Mass of MLSS = PX,TSS*SRT
Req. Aeration Vol., Vaer,min = 99,085 ft3 Click on green box & then on the arrow Aer. + Membr. Vol., Vtot = 106,446 ft3 to select tank shape Required Aeration Volume = Vaer,min = (Mass of MLSS/(MLSS*8.34))*(106 /7.48)
Req. Vol. per tank, Vtank = 53,223 ft3 Actual Tank Width = 38.3 ft Calculated Tank Width = 32.5 ft Actual Tank Length = 71.8 ft Aeration Detntion Time, τ = (Vaer,act*7.48/106)*N*24/Qo Calculated Tank Length = 75.4 ft Act. Aer. Vol., Vaer,act = 55,993 ft3 Tank Wall Height = 23.7 ft Memb. Mod. Vol/Tank: 3,680 ft3 Vol. BOD Loading = Qo*BODo*8.34/((Vaer,act/1000)*N)
Aer. Detention Time, τaer = 4.9 hr MLVSS = 6,979 mg/L MLVSS = MLSS(Mass of MLVSS/Mass of MLSS) Vol. BOD Loading = 129.0 lb BOD/d/1000 ft3 F:M ratio = Qo*8.34*BODo/((MLVSS*8.34*(Vaer,act*7.48/106 )*N))
F:M ratio = 0.296 lb BOD/d/lb MLVSS
Sludge Wasting Rate, Qw = 211,422 gal/day Qw = ((N*Vaer,act*7.48/106 )*MLSS/(SRT*Xw))*106
Air Requirement/Blower Design Calculations
VI. User Inputs - Enter values in yellow cells only
Patm = 14.696*EXP[-32.17*MWair*Elev/(gc*R*Tamb)
MBR WW Treatment Process Design Calculations - U.S. Units BOD Removal and Nitrification

INPUTS PROCESS DESIGN CALCULATIONS
rectangular
AER. TANK CALC'NS S
Discussion and References
For background information about Membrane Bioreactors (MBRs) see:

O2 transf. Effic., SOTE = 30.0% Sea Level, Elev = 225 ft (from diffuser mfr or vendor) ambient air Temp., Tamb = 70 o F
Ratio of oxygen transfer rate in wastewater PD = Patm + (62.4*ddiff/2)/144 ρair = MWair*Pstd /(10.73*(Tstd + 459.67)) to that in clean water, α = 0.5 Diffuser Fouling Factor, F = 0.8 Ratio of D.O. saturation in ww to that in clean lb/day O2: mO2 = Qo*8.34*(BODo - BODe)/f - (1.42*Px,VSS) + (4.57*Qo*8.34*NOx) water at same T & P, B = 1.0 Depth of Diffuser, ddiff = 21.7 ft D.O sat'n conc. for clean water at ww Pressure drop across This equation for oxygen utilization rate comes from:
temp. & 1 atm, Cs = 9.3 mg/L diffuser, ∆Pdiff = 10.8 in H2O NOTE: Derivation of the equation for Cs as (from diffuser mfr or vendor) a function of Tww is shown in wksht 7. The equation below for the actual oxygen transfer efficiency, AOTE, is found as

VII. Air Requirement/Blower Design Calculations Note that for use in this equation Tww must be
converted to o
C
Barom. Pressure, Patm = 14.6 psia Des. Air Flow Rate, SCFM: 5,920 scfm Pressure at Mid Depth, PD = 19.3 psia
Standard Air Density, ρair = 0.07521 lb/ft3 Des. Air Flow Rate, ACFM: 3558 acfm Design Air Flow Rate, SCFM = (mO2/AOTE)*MWair/(O2_mole fraction*MW_O2*ρair_std*60*24 (from Ideal Gas Law) (at delivery point)
O2 Utilization Rate, mO2 = 12,327 lb/day Blower Outlet Press., PB2 = 24.38 psia Design Air Flow Rate, ACFM = SCFM*(Pstd/Pblower)*((Tww + 459.67)/(Tstd + 459.67)) Actual O2 transf. Efficiency, AOTE = 8.33% Blower Outlet Press., PB2 = Patm + ∆Pdiff*0.036126 + 62.4*ddiff/144 (This is the air flow rate needed for the aeration tank, typically provided by a fine bubble diffuser system.) Alkalinity used for Nitrification, AlkNitrif = 7.14*NOx mg/L as CaCO3 VIII. User Inputs and Constants- Enter value in yellow cell only Alkalinity needed = AlkNitrif + AlkEffl - Alko mg/L as CaCO3 Alkalinity needed Alk_perday = (AlkNitrif + AlkEffl - Alko)Qo*8.34 lb/day as CaCO3 Target Effluent Alkalinity = 20 mg/L as CaCO3
Sodium Bicarbonate needed to maintain alkalinity = Alk_perday*84/50 lb/day NaHCO3 Equiv. Weight of CaCO3 = 50 g/equiv.

Equiv. Weight of NaHCO3 = 84 g/equiv.

Alkalinity used for Nitrification = 7.14 g CaCO2/g NH3-N IX. Calculation of Alkalinity Requirement
Alkalinity used for Nitrification = 320.8 mg/L as CaCO3 Alkalinity needed = 40.8 mg/L as CaCO3
Alkalinity needed = 1,403 lb/day as CaCO3
Sodium Bicarbonate needed
per day to maintain alkalinity = 2,356 lb/day NaHCO3
Copyright © McGraw-Hill Global Education Holdings, LLC. All rights reserved. rectangular
cylindrical ALKALINITY REQUIREMENT OXYGEN/AIR/BLOWER REQUIREMENTS Nalco Water Handbook, 4th Ed., Ch. 23 Eqns 23.6 and 23.7 Design of Water Resource Recovery Facilities, 6th Ed., Equation 12.32 Water Reuse: Issues, Technologies, and Applications, Sec. 2.2 712
DRAFT
This worksheet makes the design calculations for preanoxic denitrification basin(s) to go with the Aeration Tank(s) designed for BOD removal and Nitrification in Worksheet 4. (Wastewater parameters/characteristics and biological kinetic coefficients entered on Worksheet 2 will also be used in this worksheet)
I. User Inputs - Enter values in yellow cells only
Effluent Nitrate conc., Ne = 5.0 mg/L Mixing Energy
Nitrate conc. in RAS, NRAS = 5.0 mg/L for Anoxic Reactor = 0.38 hp/103 ft3
Temp. Coeff. For SDNR = 1.026 . Design % Excess
Tank Freeboard = 2.3 ft Nitrif. Capacity = 2%
No. of Anoxic Tanks, Nan = 2 . Liquid Depth in Tank = 22 ft Est. of detention time, tan = 0.9654 hr Tank L:W ratio = 1 Note that an initial estimate is needed for (Tank L:W ratio is only used for anoxic detention time in cell D19 to start rectangular tanks) an iterative calculation of minimum required
anoxoc detention time below.

II. Calculate RAS Ratio and Anoxic Tank Active Biomass Conc.

Membrane Bioreactor for Preanoxic Denitrification
RAS ratio, RAS = 7.99 Aer. Tank Act. Biomass, Pxb = 6330 lb/d An. Tank MLSS, MLSSAN = 7554 mg/L The biological treatment process design calculations for the MBR process are carried Aeration Tank Active Biomass Fraction, Xaer,b = 0.4773 out using biological kinetics constants and equations typically used for completely mixed Anoxic Tank Active Biomass Conc., Xan,b = 3606 mg/L activated sludge systems as described in the following references:

III. Calc Feed Rate of NOx to Anoxic Tank and Anoxic Tank Volume RAS ratio, RAS = (NOx/NRAS) - 1
Aer Tank Act. Biomass, Pxb = [Qo*Y*(bCODo - S)*8.34]/[1 + (kd*SRT)] Flow rate to Anoxic Tank = 32.9 MGD Anaer. Tank MLSS, MLSSAN = [RAS/(RAS + 1)] MLSSw (RAS flow containing nitrate) Anoxic Tank Volume, Van = 22,155 ft3 Aeration Tank Active Biomass Fraction, Xaer,b = Pxb/Px,vss NOx rate to Anoxic Tank = 1372 lb/day (based on detention time value in cell D19) Anoxic Tank Active Biomass Conc., Xan,b = Xaer,b*MLSSAN Flow Rate to Anoxic Tank , QAN = RAS*Qo
IV. Calculate the SDNR (Specific Denitrification Rate) NOx Rate to Anoxic Tank = QAN*NRAS*8.34 Anoxic Tank Volume, Van = (Qo*106
/7.48)*tAN/24
Anoxic Tank F/M ratio = 2.8979 lb BOD/day/lb MLVSS Anoxic Tank F:M ratio, F:M = Qo*BODo*8.34/((Van*7.48/106 )*Xan,b/8.34)
rbCODo/bCODo ratio = 0.1275
Next lower rbCOD/bCOD value from table = 0.1 Coefficients for: SDNR = bo + b1 [ln(F:M)] The SDNR equation, Next higher rbCOD/bCOD value from table = 0.2 rbCOD/bCOD bo b1 coefficient values, SDNR for rbCOD/bCOD = 0.1 is equal to 0.26899 0.1 0.186 0.078 and temperature SDNR for rbCOD/bCOD = 0.2 is equal to 0.33855 0.2 0.213 0.118 correction equations

0.20 0.2130 0.1180 McGraw-Hill, 2014
V. Calculate Anoxic Tank Volume, Dimensions, and Detention Time Note that for F:M < 0.5, SDNR at 20o C is calculated as: SDNR = 0.24*F:M
SDNR at Tww = (SDNR at 20oC)*θSDNR
[((Tww-32)/1.8)-20]
NO3-N reduction capacity = 1399 lb/day % Excess Nitrif Capacity = 2.0% NO3-N reduction capacity = (Van*7.48/106)*SDNR*Xan,b*8.34 Difference between Design and Calculated % Excess Nitrif. Capacity = 0.000 % Excess Nitrif. Capac. = (N03-N Reduction Capacity - NOx Rate to Anoxic Tank) Anoxic Tank min. Vol, Van = ft3 NOx Rate to Anoxic Tank Min. Anoxic Det'n Time, tan = hr Min. Anoxic Det'n Time, tan = Van*24/(Qo*106 /7.48)
Min. Vol. per Tank, Vtank = Van/Nan
NOTE: This is an iterative solution. You must use Excel's "Goal Seek" to find the Van and tan values as follows: Place the cursor on the green cell G64 and click on "goal seek" (in the "tools" menu or under "Data - What If Analysis" depending on the version of Excel). Enter values to "Set cell" G64 "To value:" 0, "By changing cell:" D19, and click on "OK". The calculated values Oxygen credit for nitrate reduction = 2.86 Qo(NOx - Ne) of Van and tan will be in cells D66 and D68. Cell G64 should be zero if the process worked right.

A preliminary estimate for tan is needed in cell D19 in order for the iterative solution to work.

Alkalinity produced by nitrate reduction = 3.57(NOx - Ne) Min. Vol. per tank, Vtank = 11,078 ft3 Click on green box & then on the arrow Calculated Tank Width = 22.6 ft to select tank shape Sludge Wasting Rate:

Calculated Tank Length = 22.6 ft Actual Tank Width = 28.0 ft Qw = [((Vaer*MLSS + Vanox*Xb)/SRT)]/(TSSw) Tank Wall Height = 24.0 ft Actual Tank Length = 38.0 ft Act. Tank Liq. Vol. = 23,089 ft3
Anoxic Detention Time, τan = 2.012 hr (Preanoxic Tank Liquid Volume) VI. Calc. Revised Air Requirement & Alkalinity Requirement, Mixing Power & Sludge Wasting Rate
Oxygen Credit = 3924 lb/day equals: 163.5 lb/hr
O2 Utilization Rate = 350 lb/hr
TIONS

0.97 rectangular

TANK VOLUME AND DIMENSIONS PROCESS DESIGN CALCULATIONS
22,155
Water and Wastewater Calculations Manual, 3rd Ed., Sec. 6.21, Activated Sludge Process Handbook of Environmental Eng. Calculations, 2nd Ed., Sec. 1.7.21, Activated Sludge Process MBR WW Treatment Process Design Calculations - U.S. Units PreAnoxic Denitrification
INPUTS
Discussion and References
For background information about Membrane Bioreactors (MBRs) see:

Design of Water Resource Recovery Facilities, 6th Ed., Sec. 12.6 Membrane Bioreactors Water and Wastewater Engineering: Design Principles and Practice Section 23.8, Membrane Bioreactor Design Practice
Membrane Bioreactors: WEF MOP No. 36, Chap. 4, Membrane Bioreactor Process Design Water Reuse: Issues, Technologies, and Applications
Section 7.8, Analysis and Design of Membrane Bioreactor Processes 713
DRAFT
Required Air Flow Rate (in Aeration Tank), SCFM = 4035.6 SCFM Required Air Flow Rate (in Aeration Tank), ACFM = 2425.3 ACFM Alkalinity Produced = 142.6 mg/L as CaCO3
Alkalinity Needed = -101.7 mg/L as CaCO3
Alkalinity Needed = -3496 lb/day as CaCO3
Sodum Bicarbonate Needed per Day to Maintain Alkalinity (lb/day NaHCO3) = -5873 Required Anoxic Tank Mixing Power = 17.5 hp
Sludge Wasting Rate = 248,404 gal/day
Copyright © McGraw-Hill Global Education Holdings, LLC. All rights reserved. rectangular
cylindrical FINAL CALCULAT
714
DRAFT

APPENDICES
City of Santa Paula Wastewater Collection System and Water Recycling Facility Master Plan Appendix J – Annual Major Service and Replacement Budget 715
DRAFT

TECHNICAL MEMORANDUM
To: Clete Saunier, Public Works Director
City of Santa Paula
From: Becca Bugielski – PE | MKN & Associates, Inc.

Mike Nunley– PE | MKN & Associates, Inc.

Date: 3/4/2024
Re: Annual Major Service and Replacement Budget

1.0 Objectives
As part of the Santa Paula Wastewater Master Plan Update, MKN identified major mechanical equipment and developed recommendations for budgeting to repair and/or replace that equipment. The City of Santa Paula completed the WRF in 2010, and many of the mechanical systems have required replacement or major service since the ten-year milestone is a critical event for evaluating membranes, blowers, pumps, and other major pieces of equipment.

1.1 Purpose
The purpose of this evaluation is to allow the City to develop a budget for major service and/or replacement of critical mechanical equipment. These recommendations are based on observation of existing plant systems, cost for ongoing service, and cost for services at similar facilities or for similar pieces of equipment.

2.0 Annual Major Service and Replacement Budget
The table on the following page is based on the equipment schedules in Section 4.4 of the Draft Wastewater Master Plan Update. Five year and ten-year intervals are identified, since these are typically the major milestones or design lives for blowers, pumps, and other mechanical equipment. 716
DRAFT
| 2
Major Service and Replacement Recommendations
5 Year 10 Year
Processes Quantity Cost Opinion Comment Cost Opinion Comment Influent Lift Station
Pumps 4 $ 40,000
New seals and
Impellers $ 100,000 Replacement
Plug Valves 4 $ 20,000
New internals and
operator service $ 20,000
New internals and
operator service
Swing-Flex Check
Valves 4 $ 20,000
New internals and
operator service $ 20,000
New internals and
operator service
Slide Gates 2 $ 10,000
New internals and
operator service $ 10,000
New internals and
operator service
Flap Gates 2 $ 10,000
Inspection and
repairs $ 10,000
Inspection and
repairs
Headworks
Primary Screens 2 $ 30,000
New bearings and
inspection/ repairs $ 200,000 Screen replacement
Grit Vortex 2 $ 10,000
New bearings and
inspection/ repairs $ 100,000 Replacement
Grit Classifier 2 $ 15,000
New bearings and
inspection/ repairs $ 30,000 Replacement
Primary Screens
Conveyor 2 $ 10,000
New bearings and
inspection/ repairs $ 100,000 Replacement
Fine Screens 2 $ 30,000
New bearings and
inspection/ repairs $ 200,000 Screen replacement
Fine Screens
Conveyor 2 $ 10,000
New bearings and
inspection/ repairs $ 100,000 Replacement
Slide Gates 6 $ 30,000
New internals and
operator service $ 30,000
New internals and
operator service
EQ Basins
Slide Gates 2 $ 20,000
Inspection and
repairs $ 20,000
Inspection and
repairs
Anoxic Basins
Anoxic Mixer 3 $ 15,000 Replacement $ 15,000 Replacement Diversion Channel
Slide Gates 3 $ 20,000
New internals and
operator service $ 20,000
New internals and
operator service
Aeration Basins
MBR Feed Pumps 3 $ 30,000
New seals and
Impellers $ 210,000 Replacement
RAS Pumps 3 $ 30,000
New seals and
Impellers $ 210,000 Replacement
Aeration Panels 207 $ 100,000 Replace panels $ 100,000 Replace panels Biological Aeration
Blowers 4 $ 200,000
Inspection and
repairs $ 400,000 Replacement
ML Collection and MLSS Recirculation Channels
WAS Pumps 2 $ 20,000
New seals and
Impellers $ 140,000 Replacement
717
DRAFT
| 3
Mud Valves 6 $ 30,000
New internals and
operator service $ 30,000
New internals and
operator service
Slide Gates 3 $ 30,000
Inspection and
repairs $ 30,000
Inspection and
repairs
Channel Aeration
Blowers 2 $ 100,000
Inspection and
repairs $ 200,000 Replacement
MBR Filtration Modules
Mud Valves 6 $ 30,000
New internals and
operator service $ 30,000
New internals and
operator service
Membrane
Filtration Modules 24 $ 50,000
Inspection and
repairs $ 250,000 Replacement
Permeate Pumps 6 $ 60,000
New seals and
impellers $ 420,000 Replacement
Membrane Module
Aeration 3 $ 150,000
UV Disinfection
UV Modules 10 $ 50,000
Inspect modules and
replace lamps $ 100,000
Replace modules
and lamps
UV Air Flush-out
Compressor 1 $ 15,000 Replacement $ 15,000 Replacement
Automatic Level
Gate 2 $ 20,000
Inspection and
repairs $ 20,000
Inspection and
repairs
Channel Weir Gates 2 $ 20,000
Inspection and
repairs $ 20,000
Inspection and
repairs
CIP Storage Tanks and Foam Spray System
CIP Pumps 2 $ 60,000 Replacement $ 60,000 Replacement
Chemical
Metering/Injection
Pumps 2 $ 20,000 Replacement $ 20,000 Replacement
Foam Spray Pumps 2 $ 20,000 Replacement $ 20,000 Replacement Foam Spray
Nozzles 270 $ 50,000
Inspection and
repairs $ 100,000
Inspection and
repairs
Storage Tank Drain
- Mud Valves 2 $ 10,000
New internals and
operator service $ 10,000
New internals and
operator service
Solids Processing System
Gravity Belt
Thickeners 2 $ 50,000
Inspection and
repairs $ 300,000 Replacement
Digester Blowers 3 $ 150,000
Inspection and
repairs $ 300,000 Replacement
Rethickening
Pumps 2 $ 20,000
New seals and
impellers $ 140,000 Replacement
Screw Press Feed
Pumps 1 $ 10,000
New seals and
impellers $ 70,000 Replacement
Screw Press 1 $ 30,000
Inspection and
repairs $ 150,000
New internals and
motor
Polymer Units 3 $ 15,000
Inspection and
repairs $ 60,000 Replacement
Odor Control System
718
DRAFT
| 4
Foul Air Blower 1 $ 10,000
Inspection and
repairs $ 50,000 Replacement
Biological Trickling
Filter 1 $ 100,000 $ 100,000
Total (Rounded) $ 1,800,000 $ 4,600,000
Notes
1) ENR LA CCI (Jan 2024) = 15299.7
2) Future Costs have not been escalated. It is assumed costs will be escalated during development of the rate study.

As shown in the attached table, 5-year major expenditures of $1.8M and 10-year expenditures of $4.6M should be anticipated by the City. These costs are not escalated, but it is recommended the City budget annually to build reserves for payment of these expenses. An annual allocation of $640,000, with annual escalation as recommended by the City's financial consultant, would allow the City to prepare to cover these anticipated costs at these 5- and 10-year milestones.
719
ATTACHMENT 2
2024 Wastewater Collection System and Water Recycling
Facility Master Plan Appendices
720

APPENDICES
City of Santa Paula Wastewater Collection System and Water Recycling Facility Master Plan Appendix A – Flow Monitoring Study
DRAFT
721
1868 Palma Drive, Suite I, Ventura, CA 93003 www.goldcoastenv.com 805.498.3811 ph.

Manhole - Layout

CITY OF SANTA PAULA - SEWER FLOW STUDY
MH Location: 520 Harvard Blvd.

Santa Paula, CA 93060

Pipe Size: 18” VCP
Time Period: 7/11/2023 - 12:00 a.m. to
7/25/2023- 12:00 a.m.

GPS: 34.348436, -119.065191
Equipment
N
 Manhole walls are made of stacked brick and mortar. Pipe transitions are in good condition inside of manhole
 Meter was placed inside downstream pipe in order
to capture the flow from the tie in.

Manhole
E
Gold G C Coast Environmental
E Specializing in process instrumentation and calibration.

G C
Teledyne Isco 2150 Area Velocity Flow Meter with 10’
measuring range:

Level Measurement:
 Method - Submerged pressure transducer mounted in
the flow stream
 Transducer Type - Differential linear integrated circuit pressure transducer
 Range (standard) 0.033 to 10 ft (0.010 to 3.05 m);
Maximum Allowable Level 34 ft (10.5 m)
 Accuracy ±0.01 ft from 0.033 to 10 ft, (±0.003 m from

0.01 to 3.05 m,)
 Long-Term Stability ±0.023 ft/yr (±0.007 m/yr)
 Compensated Range 32° to 122°F (0° to 50°C)
Velocity Measurement:
 Method - Doppler ultrasonic, frequency 500 kHz
 Typical Minimum Depth 0.08 ft (25 mm)
 Range -5 to +20 ft/s (-1.5 to +6.1 m/s)
 Accuracy (in water with uniform velocity profile, speed of sound = 4850 ft/s, for indicated velocity range)
±0.1 ft/s from -5 to 5 ft/s (±0.03 m/s from—

1.5 to +1.5 m/s)
 ±2% of reading from 5 to 20 ft/s (1.5 to 6.1 m/s)
Method Of Insertion:
 18 inch line requires Confined Space Entry.

Flow
DRAFT
722
Project: City of Santa Paula - Sewer Flow Study
Location: 520 Harvard Blvd., Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/11/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
723
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 520 Harvard Blvd.

Time Level Velocity Flow Time Level Velocity Flow
12:00:00 PM 7.943 1.109 374.206
12:15:00 AM 7.176 0.982 285.171 12:15:00 PM 7.915 1.133 373.468 12:30:00 AM 7.02 0.883 252.86 12:30:00 PM 8.132 1.215 422.74 12:45:00 AM 6.684 0.978 262.146 12:45:00 PM 8.33 1.283 460.71 1:00:00 AM 6.442 0.897 228.816 1:00:00 PM 8.103 1.188 411.419 1:15:00 AM 6.364 0.721 180.816 1:15:00 PM 8.003 1.172 394.073 1:30:00 AM 6.333 0.582 145.09 1:30:00 PM 8.196 1.172 412.057 1:45:00 AM 6.252 0.57 137.604 1:45:00 PM 8.196 1.166 408.752 2:00:00 AM 6.156 0.574 137.649 2:00:00 PM 8.177 0.784 268.728 2:15:00 AM 6.145 0.57 133.583 2:15:00 PM 7.968 0.731 246.496 2:30:00 AM 5.903 0.501 113.486 2:30:00 PM 7.877 1.093 364.433 2:45:00 AM 5.828 0.418 92.864 2:45:00 PM 7.878 0.639 213.252 3:00:00 AM 5.899 0.505 114.22 3:00:00 PM 8.047 0.773 256.147 3:15:00 AM 5.904 0.541 121.559 3:15:00 PM 8.04 0.852 288.172 3:30:00 AM 5.927 0.529 117.895 3:30:00 PM 8.001 0.934 318.272 3:45:00 AM 5.938 0.549 125.205 3:45:00 PM 8.104 0.948 328.399 4:00:00 AM 5.978 0.551 126.914 4:00:00 PM 8.033 0.759 256.072 4:15:00 AM 5.971 0.544 124.278 4:15:00 PM 8.048 0.966 330.345 4:30:00 AM 6.015 0.589 136.878 4:30:00 PM 8.244 1.033 365.917 4:45:00 AM 6.139 0.599 143.092 4:45:00 PM 8.369 1.221 440.122 5:00:00 AM 6.24 0.659 160.937 5:00:00 PM 8.246 1.192 422.317 5:15:00 AM 6.574 0.717 187.884 5:15:00 PM 8.367 1.22 440.383 5:30:00 AM 6.599 0.718 188.9 5:30:00 PM 8.328 1.261 452.693 5:45:00 AM 6.831 0.799 220.672 5:45:00 PM 8.317 1.267 453.401 6:00:00 AM 6.97 0.886 251.299 6:00:00 PM 8.346 1.333 474.869 6:15:00 AM 6.91 0.833 233.275 6:15:00 PM 8.453 1.339 487.1 6:30:00 AM 7.03 0.882 252.726 6:30:00 PM 8.239 1.211 422.99 6:45:00 AM 7.245 0.979 292.397 6:45:00 PM 8.459 1.279 468.46 7:00:00 AM 7.463 0.979 303.501 7:00:00 PM 8.427 1.427 520.169 7:15:00 AM 7.529 1.017 319.625 7:15:00 PM 8.476 1.281 465.367 7:30:00 AM 7.628 1.159 369.612 7:30:00 PM 8.5 1.333 487.504 7:45:00 AM 7.822 1.114 368.409 7:45:00 PM 8.46 1.286 471.059 8:00:00 AM 7.914 1.203 403.953 8:00:00 PM 8.67 1.438 543.462 8:15:00 AM 8.008 1.167 397.994 8:15:00 PM 8.578 1.347 502.431 8:30:00 AM 8.021 1.221 415.67 8:30:00 PM 8.722 1.428 539.631 8:45:00 AM 7.885 1.143 380.289 8:45:00 PM 8.82 1.478 562.773 9:00:00 AM 7.749 1.137 361.494 9:00:00 PM 8.901 1.432 557.871 9:15:00 AM 8.022 1.108 378.761 9:15:00 PM 8.874 1.434 558.465 9:30:00 AM 8.014 1.157 395.114 9:30:00 PM 9.048 1.485 590.916 9:45:00 AM 7.949 1.179 397.148 9:45:00 PM 8.874 1.396 538.714 10:00:00 AM 7.895 1.153 385.795 10:00:00 PM 8.844 1.46 566.303 10:15:00 AM 7.935 1.134 377.751 10:15:00 PM 8.819 1.406 543.13 10:30:00 AM 8.033 1.19 398.148 10:30:00 PM 8.605 1.393 516.29 10:45:00 AM 7.873 1.145 381.772 10:45:00 PM 8.528 1.237 457.915 11:00:00 AM 8.015 1.218 415.983 11:00:00 PM 8.123 1.286 446.952 11:15:00 AM 8.059 1.223 420.433 11:15:00 PM 7.837 1.143 372.211 11:30:00 AM 8.097 1.271 439.855 11:30:00 PM 7.539 1.114 348.878 11:45:00 AM 7.991 1.242 422.478 11:45:00 PM 7.351 0.975 295.419 Inches Feet/Sec GPM
Daily Avg: 7.671 1.040 346.773
Daily Min: 5.828 0.418 92.864
Daily Max: 9.048 1.485 590.916
Peak to Avg: 1.70
Tuesday- A.M. 7/11/2023 Tuesday- P.M. 7/11/2023
DRAFT
724
Project: City of Santa Paula - Sewer Flow Study
Location: 520 Harvard Blvd., Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/12/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
725
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 520 Harvard Blvd.

Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 7.207 0.998 290.826 12:00:00 PM 8.028 1.245 417.246 12:15:00 AM 7.066 0.952 275.095 12:15:00 PM 8.091 1.248 428.656 12:30:00 AM 6.725 0.791 213.704 12:30:00 PM 7.913 1.159 389.177 12:45:00 AM 6.595 0.747 196.791 12:45:00 PM 7.935 1.136 376.022 1:00:00 AM 6.377 0.674 168.364 1:00:00 PM 7.836 1.205 399.478 1:15:00 AM 6.194 0.626 149.838 1:15:00 PM 7.762 1.228 402.134 1:30:00 AM 6.174 0.646 155.433 1:30:00 PM 7.829 1.169 386.879 1:45:00 AM 6.082 0.796 182.799 1:45:00 PM 7.666 1.201 379.839 2:00:00 AM 5.987 1.248 283.493 2:00:00 PM 7.83 1.238 410.071 2:15:00 AM 6.092 0.75 173.27 2:15:00 PM 7.658 1.129 362.477 2:30:00 AM 6.074 0.998 234.815 2:30:00 PM 7.929 1.258 412.561 2:45:00 AM 5.937 0.488 111.237 2:45:00 PM 7.886 1.185 396.14 3:00:00 AM 5.792 0.833 183.746 3:00:00 PM 7.558 1.138 357.937 3:15:00 AM 5.648 0.53 111.521 3:15:00 PM 7.802 1.178 379.068 3:30:00 AM 5.606 0.623 131.267 3:30:00 PM 7.716 1.135 366.023 3:45:00 AM 5.667 0.438 93.759 3:45:00 PM 7.813 1.161 376.82 4:00:00 AM 5.757 0.461 100.775 4:00:00 PM 7.681 1.089 348.894 4:15:00 AM 5.812 0.507 112.332 4:15:00 PM 8.069 1.219 419.225 4:30:00 AM 5.979 0.566 130.267 4:30:00 PM 8.484 1.269 466.699 4:45:00 AM 6.056 0.623 146.046 4:45:00 PM 8.125 1.178 403.482 5:00:00 AM 6.217 0.608 147.291 5:00:00 PM 8.217 1.351 469.265 5:15:00 AM 6.373 0.703 176.655 5:15:00 PM 8.238 1.27 440.792 5:30:00 AM 6.395 0.72 181.892 5:30:00 PM 8.275 1.346 476.884 5:45:00 AM 6.819 0.829 222.609 5:45:00 PM 8.216 1.273 446.338 6:00:00 AM 6.917 0.84 228.794 6:00:00 PM 8.375 1.259 452.824 6:15:00 AM 6.965 0.923 261.568 6:15:00 PM 8.188 1.253 439.891 6:30:00 AM 7.002 0.858 241.386 6:30:00 PM 8.398 1.341 486.445 6:45:00 AM 7.137 0.95 274.548 6:45:00 PM 8.393 1.31 474.787 7:00:00 AM 7.375 0.988 301.162 7:00:00 PM 8.48 1.337 485.301 7:15:00 AM 7.416 1.083 328.748 7:15:00 PM 8.416 1.363 495.969 7:30:00 AM 7.767 1.089 356.689 7:30:00 PM 8.708 1.423 540.967 7:45:00 AM 7.623 1.098 349.259 7:45:00 PM 8.595 1.404 514.296 8:00:00 AM 7.895 1.123 375.996 8:00:00 PM 8.45 1.374 500.771 8:15:00 AM 7.938 1.235 415.255 8:15:00 PM 8.512 1.374 507.315 8:30:00 AM 8.014 1.154 394.057 8:30:00 PM 8.409 1.339 479.567 8:45:00 AM 7.826 1.262 417.075 8:45:00 PM 8.465 1.4 513.041 9:00:00 AM 7.918 1.151 379.325 9:00:00 PM 8.696 1.445 548.426 9:15:00 AM 7.834 1.192 392.61 9:15:00 PM 8.561 1.346 500.543 9:30:00 AM 7.748 1.198 384.007 9:30:00 PM 8.8 1.38 525.912 9:45:00 AM 7.711 1.144 369.064 9:45:00 PM 8.797 1.381 532 10:00:00 AM 8.056 1.183 406.625 10:00:00 PM 8.766 1.431 548.79 10:15:00 AM 7.911 1.158 388.522 10:15:00 PM 8.674 1.263 477.884 10:30:00 AM 7.679 1.194 385.454 10:30:00 PM 8.546 1.351 497.584 10:45:00 AM 7.731 1.197 385.96 10:45:00 PM 8.289 1.332 475.118 11:00:00 AM 7.998 1.213 410.473 11:00:00 PM 8.195 1.289 452.92 11:15:00 AM 8.101 1.127 381.492 11:15:00 PM 8.092 1.264 437.024 11:30:00 AM 8.037 1.238 416.561 11:30:00 PM 7.76 1.178 385.406 11:45:00 AM 8.009 1.274 434.642 11:45:00 PM 7.472 1.099 336.141 Inches Feet/Sec GPM
Daily Avg: 7.564 1.094 356.666
Daily Min: 5.606 0.438 93.759
Daily Max: 8.8 1.445 548.79
Peak to Avg: 1.54
Wednesday - A.M. 7/12/2023 Wednesday - P.M. 7/12/2023
DRAFT
726
Project: City of Santa Paula - Sewer Flow Study
Location: 520 Harvard Blvd., Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/13/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
727
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 520 Harvard Blvd.

Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 7.3 0.952 287.283 12:00:00 PM 7.968 1.183 399.025 12:15:00 AM 7.034 0.94 269.821 12:15:00 PM 8.002 1.229 414.956 12:30:00 AM 6.93 0.855 234.765 12:30:00 PM 7.987 1.294 439.686 12:45:00 AM 6.722 0.804 210.013 12:45:00 PM 8.001 1.16 395.056 1:00:00 AM 6.421 0.676 171.63 1:00:00 PM 8.045 1.147 387.772 1:15:00 AM 6.256 0.722 173.297 1:15:00 PM 7.982 1.207 400.813 1:30:00 AM 6.156 0.656 152.618 1:30:00 PM 8.095 1.166 403.248 1:45:00 AM 6.101 0.568 132.452 1:45:00 PM 8.085 1.248 429.527 2:00:00 AM 5.883 0.507 113.897 2:00:00 PM 7.857 1.24 410.055 2:15:00 AM 5.796 0.468 101.699 2:15:00 PM 8.282 1.242 442.609 2:30:00 AM 5.753 0.493 106.855 2:30:00 PM 8.294 1.33 474.803 2:45:00 AM 5.753 0.477 104.114 2:45:00 PM 7.957 1.201 406.268 3:00:00 AM 5.733 0.47 102.256 3:00:00 PM 7.894 1.266 423.798 3:15:00 AM 5.805 0.503 111.277 3:15:00 PM 7.824 1.23 402.513 3:30:00 AM 5.745 0.479 104.34 3:30:00 PM 7.781 1.199 390.614 3:45:00 AM 5.712 0.443 95.792 3:45:00 PM 7.861 1.229 409.065 4:00:00 AM 5.704 0.468 100.02 4:00:00 PM 7.877 1.167 389.443 4:15:00 AM 5.722 0.449 96.956 4:15:00 PM 8.104 1.272 430.943 4:30:00 AM 5.774 0.497 109.087 4:30:00 PM 8.174 1.276 447.055 4:45:00 AM 6.021 0.587 136.454 4:45:00 PM 8.292 1.271 453.418 5:00:00 AM 5.932 0.534 119.993 5:00:00 PM 8.19 1.349 473.871 5:15:00 AM 6.235 0.657 160.348 5:15:00 PM 8.241 1.292 457.397 5:30:00 AM 6.348 0.727 180.757 5:30:00 PM 8.318 1.32 471.692 5:45:00 AM 6.652 0.832 221.72 5:45:00 PM 8.194 1.335 453.862 6:00:00 AM 6.818 0.835 230.055 6:00:00 PM 8.194 1.325 454.508 6:15:00 AM 6.906 0.875 245.196 6:15:00 PM 8.233 1.273 448.055 6:30:00 AM 7.038 0.886 250.13 6:30:00 PM 8.485 1.321 483.958 6:45:00 AM 7.28 0.938 279.839 6:45:00 PM 8.569 1.503 559.806 7:00:00 AM 7.645 1.053 337.746 7:00:00 PM 8.424 1.361 492.157 7:15:00 AM 7.473 1.074 331.51 7:15:00 PM 8.532 1.425 527.371 7:30:00 AM 7.553 1.064 332.456 7:30:00 PM 8.482 1.287 467.629 7:45:00 AM 7.817 1.185 388.727 7:45:00 PM 8.529 1.303 476.261 8:00:00 AM 7.704 1.175 370.397 8:00:00 PM 8.772 1.297 497.807 8:15:00 AM 7.804 1.191 389.091 8:15:00 PM 8.662 1.374 508.543 8:30:00 AM 7.938 1.186 399.221 8:30:00 PM 8.638 1.542 576.668 8:45:00 AM 7.822 1.227 405.668 8:45:00 PM 8.593 1.447 536.583 9:00:00 AM 7.609 1.147 365.666 9:00:00 PM 8.652 1.459 548.05 9:15:00 AM 7.812 1.186 386.345 9:15:00 PM 8.88 1.442 562.032 9:30:00 AM 7.827 1.208 395.29 9:30:00 PM 9.042 1.502 599.131 9:45:00 AM 7.853 1.182 392.207 9:45:00 PM 8.861 1.412 548.481 10:00:00 AM 8.106 1.231 426.671 10:00:00 PM 8.83 1.42 549.425 10:15:00 AM 8.169 1.303 455.16 10:15:00 PM 8.729 1.508 574.926 10:30:00 AM 8.251 1.285 455.662 10:30:00 PM 8.744 1.412 539.615 10:45:00 AM 8.015 1.293 441.434 10:45:00 PM 8.373 1.383 493.741 11:00:00 AM 8 1.246 420.868 11:00:00 PM 8.309 1.238 437.008 11:15:00 AM 7.888 1.186 395.284 11:15:00 PM 7.923 1.202 399.717 11:30:00 AM 8.152 1.224 427.348 11:30:00 PM 7.689 1.178 380.95 11:45:00 AM 8.151 1.305 455.508 11:45:00 PM 7.482 1.075 335.321 Inches Feet/Sec GPM
Daily Avg: 7.608 1.093 363.083
Daily Min: 5.704 0.443 95.792
Daily Max: 9.042 1.542 599.131
Peak to Avg: 1.65
Thursday - A.M. 7/13/2023 Thursday - P.M. 7/13/2023
DRAFT
728
Project: City of Santa Paula - Sewer Flow Study
Location: 520 Harvard Blvd., Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/14/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
729
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 520 Harvard Blvd.

Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 7.206 1.093 324.121 12:00:00 PM 7.782 1.21 397.29 12:15:00 AM 7.117 1.029 300.318 12:15:00 PM 8.103 1.219 416.249 12:30:00 AM 6.807 0.895 245.859 12:30:00 PM 8.113 1.25 433.558 12:45:00 AM 6.568 0.793 207.599 12:45:00 PM 7.948 1.195 401.343 1:00:00 AM 6.487 0.759 194.054 1:00:00 PM 7.936 1.255 414.397 1:15:00 AM 6.448 0.704 179.692 1:15:00 PM 7.838 1.149 380.998 1:30:00 AM 6.333 0.748 186.39 1:30:00 PM 7.775 1.175 385.402 1:45:00 AM 6.143 0.61 145.888 1:45:00 PM 7.881 1.204 392.222 2:00:00 AM 6.022 0.55 127.338 2:00:00 PM 8.001 1.183 393.781 2:15:00 AM 5.943 0.544 123.551 2:15:00 PM 8.076 1.251 431.479 2:30:00 AM 5.878 0.551 123.991 2:30:00 PM 7.972 1.211 410.471 2:45:00 AM 5.757 0.497 108.721 2:45:00 PM 7.956 1.21 409.255 3:00:00 AM 5.765 0.501 109.754 3:00:00 PM 7.846 1.217 403.99 3:15:00 AM 5.768 0.488 106.501 3:15:00 PM 7.813 1.175 386.447 3:30:00 AM 5.73 0.51 110.876 3:30:00 PM 7.982 1.221 414.55 3:45:00 AM 5.75 0.466 100.128 3:45:00 PM 8.199 1.29 453.557 4:00:00 AM 5.816 0.518 114.758 4:00:00 PM 7.926 1.123 377.972 4:15:00 AM 5.749 0.764 166.756 4:15:00 PM 7.952 1.222 408.422 4:30:00 AM 5.941 1.107 250.766 4:30:00 PM 7.961 1.197 404.782 4:45:00 AM 5.966 0.606 139.159 4:45:00 PM 8.108 1.258 436.108 5:00:00 AM 6.167 0.598 139.912 5:00:00 PM 8.213 1.25 440.778 5:15:00 AM 6.251 0.681 164.939 5:15:00 PM 8.388 1.355 486.655 5:30:00 AM 6.473 0.733 188.017 5:30:00 PM 8.315 1.272 446.69 5:45:00 AM 6.7 0.827 221.547 5:45:00 PM 8.162 1.315 459.943 6:00:00 AM 6.819 0.91 249.182 6:00:00 PM 8.352 1.317 474.619 6:15:00 AM 6.938 0.896 252.369 6:15:00 PM 8.429 1.333 484.286 6:30:00 AM 6.975 0.994 282.294 6:30:00 PM 8.453 1.318 482.121 6:45:00 AM 7.098 1.013 294.568 6:45:00 PM 8.393 1.551 561.023 7:00:00 AM 7.226 1.021 303.506 7:00:00 PM 8.568 1.418 527.982 7:15:00 AM 7.594 1.173 373.046 7:15:00 PM 8.511 1.356 499.358 7:30:00 AM 7.684 1.071 345.849 7:30:00 PM 8.418 1.411 511.206 7:45:00 AM 7.885 1.163 388.523 7:45:00 PM 8.204 1.303 458.724 8:00:00 AM 7.905 1.139 380.175 8:00:00 PM 8.303 1.328 471.86 8:15:00 AM 8.166 1.231 425.286 8:15:00 PM 8.475 1.405 515.915 8:30:00 AM 8.119 1.258 436.821 8:30:00 PM 8.514 1.349 498.18 8:45:00 AM 7.893 1.271 425.473 8:45:00 PM 8.107 1.252 431.86 9:00:00 AM 7.694 1.128 363.633 9:00:00 PM 8.32 1.348 477.032 9:15:00 AM 7.81 1.22 400.268 9:15:00 PM 8.42 1.389 503.712 9:30:00 AM 7.894 1.267 423.944 9:30:00 PM 8.266 1.339 475.941 9:45:00 AM 8.028 1.288 440.815 9:45:00 PM 8.385 1.343 473.621 10:00:00 AM 7.908 1.222 409.899 10:00:00 PM 8.319 1.293 459.08 10:15:00 AM 7.91 1.216 403.511 10:15:00 PM 8.179 1.3 454.275 10:30:00 AM 7.903 1.244 416.898 10:30:00 PM 8.18 1.248 437.308 10:45:00 AM 7.81 1.192 393.349 10:45:00 PM 8.304 1.414 505.701 11:00:00 AM 8.073 1.26 423.533 11:00:00 PM 8.019 1.272 434.634 11:15:00 AM 7.977 1.225 415.705 11:15:00 PM 8.004 1.29 439.545 11:30:00 AM 7.813 1.168 385.765 11:30:00 PM 7.588 1.095 347.079 11:45:00 AM 7.791 1.205 396.261 11:45:00 PM 7.562 1.095 346.215 Inches Feet/Sec GPM
Daily Avg: 7.547 1.099 358.366
Daily Min: 5.73 0.466 100.128
Daily Max: 8.568 1.551 561.023
Peak to Avg: 1.57
Friday - A.M. 7/14/2023 Friday - P.M. 7/14/2023
DRAFT
730
Project: City of Santa Paula - Sewer Flow Study
Location: 520 Harvard Blvd., Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/15/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
731
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 520 Harvard Blvd.

Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 7.259 1.024 306.8 12:00:00 PM 8.688 1.47 557.368 12:15:00 AM 6.967 0.902 249.981 12:15:00 PM 8.484 1.374 497.585 12:30:00 AM 6.902 0.905 253.344 12:30:00 PM 8.514 1.459 538.619 12:45:00 AM 6.67 0.883 234.728 12:45:00 PM 8.594 1.455 543.742 1:00:00 AM 6.597 1.05 276.536 1:00:00 PM 8.719 1.544 588.003 1:15:00 AM 6.312 0.727 179.457 1:15:00 PM 8.54 1.427 529.104 1:30:00 AM 6.194 0.681 164.677 1:30:00 PM 8.671 1.431 538.451 1:45:00 AM 6.16 0.841 201.19 1:45:00 PM 8.794 1.492 574.572 2:00:00 AM 6.069 0.625 142.073 2:00:00 PM 8.697 1.453 539.774 2:15:00 AM 5.987 0.801 182.565 2:15:00 PM 8.608 1.38 516.795 2:30:00 AM 5.824 0.69 153.276 2:30:00 PM 8.386 1.339 477.036 2:45:00 AM 5.808 0.57 125.378 2:45:00 PM 8.498 1.42 521.752 3:00:00 AM 5.8 0.502 110.853 3:00:00 PM 8.325 1.369 491.075 3:15:00 AM 5.686 0.552 118.567 3:15:00 PM 8.314 1.401 501.705 3:30:00 AM 5.654 0.48 102.156 3:30:00 PM 8.25 1.318 467.428 3:45:00 AM 5.628 0.459 97.359 3:45:00 PM 8.298 1.269 453.203 4:00:00 AM 5.602 0.476 100.043 4:00:00 PM 8.324 1.247 447.236 4:15:00 AM 5.687 0.561 120.708 4:15:00 PM 7.825 1.153 381.246 4:30:00 AM 5.649 0.456 96.897 4:30:00 PM 8.047 1.263 433.323 4:45:00 AM 5.771 0.526 114.723 4:45:00 PM 8.209 1.326 467.232 5:00:00 AM 5.706 0.499 106.49 5:00:00 PM 8.366 1.314 464.367 5:15:00 AM 5.935 0.547 124.393 5:15:00 PM 8.125 1.223 419.752 5:30:00 AM 5.861 0.575 127.178 5:30:00 PM 8.044 1.226 418.831 5:45:00 AM 5.932 0.631 143.851 5:45:00 PM 8.092 1.209 417.911 6:00:00 AM 6.369 0.739 185.503 6:00:00 PM 8.098 1.177 407.133 6:15:00 AM 6.345 0.721 176.571 6:15:00 PM 8.063 1.209 416.173 6:30:00 AM 6.247 0.682 166.841 6:30:00 PM 7.82 1.114 368.167 6:45:00 AM 6.376 0.762 191.504 6:45:00 PM 7.744 1.208 394.153 7:00:00 AM 6.751 0.906 246.247 7:00:00 PM 7.791 1.277 419.971 7:15:00 AM 6.957 0.987 278.385 7:15:00 PM 7.889 1.217 404.853 7:30:00 AM 7.091 0.959 278.281 7:30:00 PM 7.826 1.174 388.308 7:45:00 AM 7.218 1.041 309.349 7:45:00 PM 7.931 1.266 426.312 8:00:00 AM 7.474 1.303 405.641 8:00:00 PM 7.932 1.203 403.108 8:15:00 AM 7.45 1.123 348.151 8:15:00 PM 7.816 1.203 397.294 8:30:00 AM 7.86 1.187 392.666 8:30:00 PM 7.899 1.234 412.283 8:45:00 AM 8.232 1.414 499.899 8:45:00 PM 7.884 1.318 440.213 9:00:00 AM 8.178 1.285 450.55 9:00:00 PM 8.144 1.323 461.045 9:15:00 AM 8.146 1.199 415.809 9:15:00 PM 8.235 1.389 491.124 9:30:00 AM 8.25 1.288 453.564 9:30:00 PM 8.16 1.276 441.059 9:45:00 AM 8.354 1.266 452.05 9:45:00 PM 8.068 1.28 440.924 10:00:00 AM 8.472 1.286 462.776 10:00:00 PM 8.081 1.284 438.163 10:15:00 AM 8.631 1.391 522.714 10:15:00 PM 7.895 1.219 407.901 10:30:00 AM 8.904 1.441 554.26 10:30:00 PM 7.767 1.324 427.835 10:45:00 AM 8.755 1.427 541.144 10:45:00 PM 7.673 1.249 402.659 11:00:00 AM 8.738 1.469 560.93 11:00:00 PM 7.705 1.233 399.828 11:15:00 AM 8.796 1.499 573.092 11:15:00 PM 7.501 1.054 329.692 11:30:00 AM 8.777 1.497 570.259 11:30:00 PM 7.305 1.093 330.221 11:45:00 AM 8.876 1.466 571.03 11:45:00 PM 7.308 1.08 320.876 Inches Feet/Sec GPM
Daily Avg: 7.533 1.108 365.148
Daily Min: 5.602 0.456 96.897
Daily Max: 8.904 1.544 588.003
Peak to Avg: 1.61
Saturday - A.M. 7/15/2023 Saturday - P.M. 7/15/2023
DRAFT
732
Project: City of Santa Paula - Sewer Flow Study
Location: 520 Harvard Blvd., Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/16/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
733
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 520 Harvard Blvd.

Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 7.137 0.966 278.839 12:00:00 PM 8.799 1.512 582.705 12:15:00 AM 7.104 1.008 293.251 12:15:00 PM 8.813 1.36 525.062 12:30:00 AM 6.962 0.93 257.546 12:30:00 PM 8.75 1.531 585.686 12:45:00 AM 6.665 0.903 240.646 12:45:00 PM 8.555 1.341 498.31 1:00:00 AM 6.548 0.87 226.703 1:00:00 PM 8.286 1.364 482.83 1:15:00 AM 6.322 0.774 192.295 1:15:00 PM 8.217 1.333 468.535 1:30:00 AM 6.357 0.799 200.073 1:30:00 PM 8.277 1.383 487.265 1:45:00 AM 6.118 0.678 159.765 1:45:00 PM 8.147 1.344 464.526 2:00:00 AM 5.996 0.67 154.971 2:00:00 PM 8.31 1.387 496.361 2:15:00 AM 5.83 0.578 128.511 2:15:00 PM 8.04 1.362 460.616 2:30:00 AM 5.789 0.569 125.288 2:30:00 PM 8 1.301 442.053 2:45:00 AM 5.712 0.642 138.256 2:45:00 PM 7.995 1.223 416.215 3:00:00 AM 5.713 0.537 116.257 3:00:00 PM 8.091 1.354 457.399 3:15:00 AM 5.666 0.566 120.867 3:15:00 PM 7.865 1.279 423.354 3:30:00 AM 5.56 0.497 103.583 3:30:00 PM 7.802 1.158 380.114 3:45:00 AM 5.62 0.498 104.628 3:45:00 PM 7.853 1.214 403.369 4:00:00 AM 5.658 0.546 116.569 4:00:00 PM 7.729 1.156 364.215 4:15:00 AM 5.467 0.548 110.622 4:15:00 PM 7.991 1.292 433.858 4:30:00 AM 5.544 0.523 108.632 4:30:00 PM 7.867 1.251 411.676 4:45:00 AM 5.491 0.492 100.553 4:45:00 PM 7.887 1.331 428.862 5:00:00 AM 5.529 0.485 100.257 5:00:00 PM 7.856 1.245 408.428 5:15:00 AM 5.479 0.472 96.351 5:15:00 PM 7.983 1.288 431.317 5:30:00 AM 5.581 0.5 104.445 5:30:00 PM 7.684 1.148 368.885 5:45:00 AM 5.755 0.58 124.601 5:45:00 PM 7.814 1.262 415.416 6:00:00 AM 5.832 0.562 125.048 6:00:00 PM 7.922 1.334 445.102 6:15:00 AM 5.897 0.652 147.299 6:15:00 PM 7.918 1.26 422.787 6:30:00 AM 5.932 0.684 154.806 6:30:00 PM 7.979 1.308 443.853 6:45:00 AM 6.311 0.738 183.018 6:45:00 PM 7.984 1.244 422.601 7:00:00 AM 6.559 0.798 205.997 7:00:00 PM 7.946 1.259 424.83 7:15:00 AM 6.574 0.83 216.951 7:15:00 PM 8.055 1.351 464.117 7:30:00 AM 6.996 0.949 266.703 7:30:00 PM 8.038 1.218 409.236 7:45:00 AM 7.153 1.056 301.071 7:45:00 PM 7.928 1.272 428.23 8:00:00 AM 7.2 1.041 308.455 8:00:00 PM 8.185 1.37 480.782 8:15:00 AM 7.496 1.086 333.228 8:15:00 PM 8.465 1.442 526.953 8:30:00 AM 7.628 1.158 369.277 8:30:00 PM 8.247 1.289 456.932 8:45:00 AM 7.897 1.227 410.84 8:45:00 PM 8.33 1.374 493.411 9:00:00 AM 8.013 1.308 446.521 9:00:00 PM 8.423 1.406 511.702 9:15:00 AM 8.184 1.322 458.327 9:15:00 PM 8.552 1.45 538.726 9:30:00 AM 8.333 1.329 475.344 9:30:00 PM 8.728 1.414 526.522 9:45:00 AM 8.457 1.375 503.507 9:45:00 PM 8.502 1.41 517.547 10:00:00 AM 8.526 1.385 505.707 10:00:00 PM 8.506 1.402 505.188 10:15:00 AM 8.455 1.275 464.355 10:15:00 PM 8.455 1.481 541.954 10:30:00 AM 8.651 1.428 530.652 10:30:00 PM 8.306 1.364 487.218 10:45:00 AM 8.741 1.405 532.909 10:45:00 PM 8.221 1.337 471.705 11:00:00 AM 8.767 1.573 603.097 11:00:00 PM 7.848 1.271 421.159 11:15:00 AM 8.599 1.46 546.01 11:15:00 PM 7.693 1.208 384.837 11:30:00 AM 8.656 1.389 521.303 11:30:00 PM 7.498 1.091 335.164 11:45:00 AM 8.746 1.48 565.724 11:45:00 PM 7.339 1.068 324.741 Inches Feet/Sec GPM
Daily Avg: 7.471 1.108 362.349
Daily Min: 5.467 0.472 96.351
Daily Max: 8.813 1.573 603.097
Peak to Avg: 1.66
Sunday - A.M. 7/16/2023 Sunday - P.M. 7/16/2023
DRAFT
734
Project: City of Santa Paula - Sewer Flow Study
Location: 520 Harvard Blvd., Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/17/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
735
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 520 Harvard Blvd.

Time Level Velocity Velocity Time Level Velocity Flow
12:10:00 AM 7.024 0.997 285.655 12:00:00 PM 8.028 1.301 445.008 12:15:00 AM 6.819 0.994 273.663 12:15:00 PM 7.994 1.296 441.094 12:30:00 AM 6.606 0.87 229.548 12:30:00 PM 7.974 1.344 455.858 12:45:00 AM 6.272 0.765 186.796 12:45:00 PM 7.959 1.352 457.294 1:00:00 AM 6.264 0.835 205.052 1:00:00 PM 7.963 1.295 438.375 1:15:00 AM 6.143 0.695 166.154 1:15:00 PM 7.91 1.34 442.056 1:30:00 AM 5.949 0.652 148.35 1:30:00 PM 7.804 1.292 411.667 1:45:00 AM 5.843 0.625 139.38 1:45:00 PM 7.597 1.214 385.269 2:00:00 AM 5.695 0.674 145.235 2:00:00 PM 7.781 1.212 393.493 2:15:00 AM 5.6 0.536 112.381 2:15:00 PM 7.758 1.222 399.819 2:30:00 AM 5.624 0.561 118.238 2:30:00 PM 7.869 1.264 417.005 2:45:00 AM 5.682 0.592 126.837 2:45:00 PM 8.083 1.228 420.878 3:00:00 AM 5.626 0.568 120.329 3:00:00 PM 8.114 1.36 465.959 3:15:00 AM 5.668 0.568 121.033 3:15:00 PM 7.985 1.249 424.23 3:30:00 AM 5.502 0.521 106.622 3:30:00 PM 8.011 1.257 428.753 3:45:00 AM 5.477 0.504 102.46 3:45:00 PM 7.736 1.165 379.776 4:00:00 AM 5.449 0.423 85.754 4:00:00 PM 7.901 1.297 434.651 4:15:00 AM 5.545 0.507 104.02 4:15:00 PM 7.948 1.397 471.697 4:30:00 AM 5.603 0.478 100.776 4:30:00 PM 7.992 1.287 435.74 4:45:00 AM 5.845 0.569 124.226 4:45:00 PM 8.265 1.362 467.545 5:00:00 AM 5.783 0.571 124.119 5:00:00 PM 8.035 1.288 438.527 5:15:00 AM 6.081 0.862 194.159 5:15:00 PM 8.382 1.275 461.361 5:30:00 AM 6.201 0.76 183.93 5:30:00 PM 8.322 1.316 454.244 5:45:00 AM 6.444 0.88 224.48 5:45:00 PM 8.466 1.434 525.883 6:00:00 AM 6.558 0.842 218.032 6:00:00 PM 8.468 1.346 493.78 6:15:00 AM 6.725 0.947 256.044 6:15:00 PM 8.414 1.357 493.528 6:30:00 AM 6.839 0.914 250.19 6:30:00 PM 8.459 1.464 536.009 6:45:00 AM 6.825 0.995 272.989 6:45:00 PM 8.513 1.407 519.432 7:00:00 AM 7.221 1.169 346.77 7:00:00 PM 8.723 1.496 565.725 7:15:00 AM 7.334 1.051 319.23 7:15:00 PM 8.558 1.419 525.835 7:30:00 AM 7.366 1.093 333.661 7:30:00 PM 8.516 1.414 514.526 7:45:00 AM 7.52 1.182 370.05 7:45:00 PM 8.496 1.357 499.595 8:00:00 AM 7.65 1.209 378.115 8:00:00 PM 8.539 1.395 505.396 8:15:00 AM 7.523 1.182 370.968 8:15:00 PM 8.607 1.361 509.799 8:30:00 AM 7.475 1.191 369.546 8:30:00 PM 8.572 1.378 509.452 8:45:00 AM 7.46 1.168 362.68 8:45:00 PM 8.373 1.392 503.166 9:00:00 AM 7.634 1.187 376.626 9:00:00 PM 8.523 1.435 523.794 9:15:00 AM 7.581 1.169 367.347 9:15:00 PM 8.644 1.461 550.08 9:30:00 AM 7.79 1.268 417.026 9:30:00 PM 8.785 1.465 563.201 9:45:00 AM 7.929 1.273 425.727 9:45:00 PM 8.77 1.406 537.479 10:00:00 AM 7.832 1.279 422.819 10:00:00 PM 8.648 1.429 535.75 10:15:00 AM 7.772 1.237 405.488 10:15:00 PM 8.566 1.441 532.106 10:30:00 AM 7.747 1.261 411.685 10:30:00 PM 8.472 1.409 517.219 10:45:00 AM 7.805 1.264 416.881 10:45:00 PM 8.035 1.292 436.813 11:00:00 AM 7.822 1.302 430.376 11:00:00 PM 7.784 1.317 430.799 11:15:00 AM 7.883 1.31 437.471 11:15:00 PM 7.568 1.204 381.009 11:30:00 AM 7.858 1.281 417.625 11:30:00 PM 7.241 1.062 317.047 11:45:00 AM 7.933 1.283 429.77 11:45:00 PM 7.046 1.082 311.452 Inches Feet/Sec GPM
Daily Avg: 7.453 1.125 363.788
Daily Min: 5.449 0.423 85.754
Daily Max: 8.785 1.496 565.725
Peak to Avg: 1.56
Monday - A.M. 7/17/2023 Monday - P.M. 7/17/2023
DRAFT
736
Project: City of Santa Paula - Sewer Flow Study
Location: 520 Harvard Blvd., Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/18/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
737
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 520 Harvard Blvd.

Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 6.82 0.987 271.734 12:00:00 PM 7.799 1.268 415.493 12:15:00 AM 6.784 0.973 266.128 12:15:00 PM 7.746 1.404 458.257 12:30:00 AM 6.509 0.87 225.112 12:30:00 PM 7.762 1.354 441.195 12:45:00 AM 6.286 0.778 191.783 12:45:00 PM 7.581 1.228 389.692 1:00:00 AM 6 0.714 165.247 1:00:00 PM 7.723 1.241 403.669 1:15:00 AM 6.049 0.713 163.326 1:15:00 PM 7.56 1.314 415.236 1:30:00 AM 5.81 0.625 137.192 1:30:00 PM 7.564 1.244 391.654 1:45:00 AM 5.738 0.607 130.003 1:45:00 PM 7.559 1.226 387.447 2:00:00 AM 5.565 0.563 116.214 2:00:00 PM 7.525 1.21 377.918 2:15:00 AM 5.562 0.991 206.689 2:15:00 PM 7.381 1.088 333.233 2:30:00 AM 5.511 0.759 154.624 2:30:00 PM 7.585 1.248 396.241 2:45:00 AM 5.434 0.493 111.483 2:45:00 PM 7.726 1.232 400.944 3:00:00 AM 5.432 0.542 109.406 3:00:00 PM 7.682 1.42 458.552 3:15:00 AM 5.494 0.584 118.726 3:15:00 PM 7.755 1.279 418.112 3:30:00 AM 5.495 0.522 105.669 3:30:00 PM 7.622 1.176 375.77 3:45:00 AM 5.382 0.502 99.977 3:45:00 PM 7.709 1.181 380.328 4:00:00 AM 5.38 0.494 98.41 4:00:00 PM 7.638 1.229 393.861 4:15:00 AM 5.503 0.501 101.623 4:15:00 PM 7.637 1.27 401.26 4:30:00 AM 5.564 0.549 114.504 4:30:00 PM 7.611 1.303 415.12 4:45:00 AM 5.785 0.627 136.621 4:45:00 PM 7.63 1.247 398.905 5:00:00 AM 5.808 0.833 184.318 5:00:00 PM 7.874 1.316 433.231 5:15:00 AM 5.961 0.733 168.048 5:15:00 PM 7.834 1.261 413.97 5:30:00 AM 6.131 0.788 187.786 5:30:00 PM 7.871 1.325 441.788 5:45:00 AM 6.421 0.845 214.285 5:45:00 PM 7.958 1.322 447.083 6:00:00 AM 6.554 0.869 226.877 6:00:00 PM 8.266 1.387 485.483 6:15:00 AM 6.582 0.901 236.545 6:15:00 PM 8.122 1.335 463.724 6:30:00 AM 6.704 0.942 253.475 6:30:00 PM 8.338 1.295 438.429 6:45:00 AM 6.896 1.017 279.998 6:45:00 PM 8.403 1.386 498.423 7:00:00 AM 7.101 1.036 299.751 7:00:00 PM 8.234 1.404 496.541 7:15:00 AM 7.304 1.187 358.33 7:15:00 PM 8.196 1.36 474.471 7:30:00 AM 7.417 1.147 353.404 7:30:00 PM 8.224 1.392 485.319 7:45:00 AM 7.765 1.295 420.126 7:45:00 PM 8.258 1.48 515.797 8:00:00 AM 7.749 1.401 457.69 8:00:00 PM 8.357 1.398 503.879 8:15:00 AM 7.723 1.225 393.989 8:15:00 PM 8.341 1.373 489.457 8:30:00 AM 7.751 1.377 450.056 8:30:00 PM 8.552 1.401 520.584 8:45:00 AM 7.49 1.161 360.382 8:45:00 PM 8.573 1.519 566.214 9:00:00 AM 7.472 1.222 374.634 9:00:00 PM 8.759 1.466 561.687 9:15:00 AM 7.513 1.286 403.168 9:15:00 PM 8.692 1.504 570.521 9:30:00 AM 7.68 1.204 384.211 9:30:00 PM 8.659 1.466 550.981 9:45:00 AM 7.526 1.243 390.33 9:45:00 PM 8.843 1.411 547.322 10:00:00 AM 7.514 1.272 398.473 10:00:00 PM 8.796 1.53 585.837 10:15:00 AM 7.642 1.322 423.281 10:15:00 PM 8.515 1.445 533.59 10:30:00 AM 7.721 1.296 421.276 10:30:00 PM 8.411 1.404 501.716 10:45:00 AM 7.739 1.248 405.545 10:45:00 PM 8.222 1.408 497.103 11:00:00 AM 7.741 1.246 406.565 11:00:00 PM 7.826 1.251 413.846 11:15:00 AM 7.789 1.283 421.803 11:15:00 PM 7.787 1.269 417.257 11:30:00 AM 7.678 1.281 406.349 11:30:00 PM 7.627 1.276 402.962 11:45:00 AM 7.556 1.227 386.879 11:45:00 PM 7.221 1.1 310.997 Inches Feet/Sec GPM
Daily Avg: 7.324 1.136 358.331
Daily Min: 5.38 0.493 98.41
Daily Max: 8.843 1.53 585.837
Peak to Avg: 1.63
Tuesday- A.M. 7/18/2023 Tuesday- P.M. 7/18/2023
DRAFT
738
Project: City of Santa Paula - Sewer Flow Study
Location: 520 Harvard Blvd., Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/19/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
739
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 520 Harvard Blvd.

Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 6.987 1.085 308.873 12:00:00 PM 7.664 1.2 382.739 12:15:00 AM 6.867 0.988 274.581 12:15:00 PM 7.693 1.338 432.953 12:30:00 AM 6.402 0.908 226.835 12:30:00 PM 7.649 1.21 388.509 12:45:00 AM 6.312 0.808 200.299 12:45:00 PM 7.626 1.249 399.281 1:00:00 AM 6.205 0.917 218.738 1:00:00 PM 7.619 1.256 401.012 1:15:00 AM 6.041 0.775 181.153 1:15:00 PM 7.618 1.256 396.991 1:30:00 AM 5.886 0.601 133.939 1:30:00 PM 7.685 1.216 392.801 1:45:00 AM 5.786 0.608 133.859 1:45:00 PM 7.553 1.228 379.865 2:00:00 AM 5.646 0.6 127.667 2:00:00 PM 7.488 1.178 366.858 2:15:00 AM 5.535 0.559 115.67 2:15:00 PM 7.589 1.167 370.842 2:30:00 AM 5.45 0.517 104.839 2:30:00 PM 7.601 1.301 412.486 2:45:00 AM 5.41 0.484 95.341 2:45:00 PM 7.623 1.186 375.992 3:00:00 AM 5.411 0.534 105.705 3:00:00 PM 7.542 1.265 395.706 3:15:00 AM 5.424 0.502 100.982 3:15:00 PM 7.502 1.166 364.761 3:30:00 AM 5.404 0.496 98.002 3:30:00 PM 7.615 1.216 386.72 3:45:00 AM 5.414 0.5 98.335 3:45:00 PM 7.702 1.306 423.027 4:00:00 AM 5.393 0.499 99.752 4:00:00 PM 7.743 1.27 414.221 4:15:00 AM 5.448 0.581 117.733 4:15:00 PM 7.806 1.299 424.08 4:30:00 AM 5.66 0.592 126.38 4:30:00 PM 8.052 1.296 445.233 4:45:00 AM 5.697 0.59 126.624 4:45:00 PM 8.031 1.304 446.21 5:00:00 AM 5.748 0.666 145.311 5:00:00 PM 8.093 1.3 432.626 5:15:00 AM 6.073 0.721 169.563 5:15:00 PM 8.248 1.348 476.625 5:30:00 AM 6.372 0.779 195.618 5:30:00 PM 7.985 1.278 434.285 5:45:00 AM 6.439 0.812 206.972 5:45:00 PM 8.063 1.356 466.709 6:00:00 AM 6.725 0.955 258.267 6:00:00 PM 7.998 1.352 453.045 6:15:00 AM 6.715 0.926 243.224 6:15:00 PM 8.046 1.352 456.437 6:30:00 AM 6.983 0.965 268.349 6:30:00 PM 8.317 1.441 516.414 6:45:00 AM 7.073 0.984 284.795 6:45:00 PM 8.341 1.367 491.771 7:00:00 AM 7.269 1.064 319.387 7:00:00 PM 8.303 1.459 509.952 7:15:00 AM 7.199 1.015 300.61 7:15:00 PM 8.069 1.35 465.064 7:30:00 AM 7.457 1.122 348.231 7:30:00 PM 8.431 1.435 523.245 7:45:00 AM 7.444 1.127 349.114 7:45:00 PM 8.399 1.372 497.857 8:00:00 AM 7.836 1.228 406.963 8:00:00 PM 8.341 1.389 499.58 8:15:00 AM 7.807 1.256 414.213 8:15:00 PM 8.399 1.432 517.187 8:30:00 AM 7.723 1.25 406.429 8:30:00 PM 8.398 1.441 522.944 8:45:00 AM 7.55 1.144 361.029 8:45:00 PM 8.57 1.42 523.299 9:00:00 AM 7.596 1.185 377.102 9:00:00 PM 8.479 1.427 524.065 9:15:00 AM 7.598 1.145 364.433 9:15:00 PM 8.587 1.445 528.637 9:30:00 AM 7.735 1.268 413.048 9:30:00 PM 8.745 1.527 567.964 9:45:00 AM 7.749 1.303 420.332 9:45:00 PM 8.737 1.528 583.285 10:00:00 AM 7.703 1.199 385.71 10:00:00 PM 8.733 1.553 584.352 10:15:00 AM 7.781 1.234 404.131 10:15:00 PM 8.581 1.407 522.113 10:30:00 AM 7.69 1.284 403.701 10:30:00 PM 8.511 1.431 515.943 10:45:00 AM 7.654 1.33 427.447 10:45:00 PM 8.119 1.309 453.97 11:00:00 AM 7.514 1.217 381.192 11:00:00 PM 7.867 1.297 432.186 11:15:00 AM 7.547 1.203 379.573 11:15:00 PM 7.654 1.272 398.159 11:30:00 AM 7.63 1.235 395.173 11:30:00 PM 7.463 1.19 369.897 11:45:00 AM 7.673 1.208 386.974 11:45:00 PM 7.073 1.072 310.275 Inches Feet/Sec GPM
Daily Avg: 7.343 1.119 354.542
Daily Min: 5.393 0.484 95.341
Daily Max: 8.745 1.553 584.352
Peak to Avg: 1.65
Wednesday - A.M. 7/19/2023 Wednesday - P.M. 7/19/2023
DRAFT
740
Project: City of Santa Paula - Sewer Flow Study
Location: 520 Harvard Blvd., Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/20/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
741
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 520 Harvard Blvd.

Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 6.832 0.979 270.443 12:00:00 PM 7.716 1.242 403.422 12:15:00 AM 6.674 0.981 262.38 12:15:00 PM 7.752 1.27 408.908 12:30:00 AM 6.404 0.874 219.85 12:30:00 PM 7.651 1.187 379.232 12:45:00 AM 6.317 0.898 215.257 12:45:00 PM 7.535 1.208 378.911 1:00:00 AM 6.216 1.115 270.756 1:00:00 PM 7.58 1.251 396.884 1:15:00 AM 6.059 0.717 166.003 1:15:00 PM 7.532 1.22 383.703 1:30:00 AM 5.814 0.636 140.861 1:30:00 PM 7.651 1.32 423.82 1:45:00 AM 5.663 0.629 134.068 1:45:00 PM 7.629 1.275 399.634 2:00:00 AM 5.625 1.054 223.157 2:00:00 PM 7.633 1.302 416.738 2:15:00 AM 5.615 0.941 198.705 2:15:00 PM 7.565 1.272 401.503 2:30:00 AM 5.541 0.985 203.909 2:30:00 PM 7.541 1.262 391.419 2:45:00 AM 5.45 0.546 110.742 2:45:00 PM 7.54 1.22 384.309 3:00:00 AM 5.412 0.566 113.628 3:00:00 PM 7.547 1.253 384.046 3:15:00 AM 5.476 0.539 109.59 3:15:00 PM 7.498 1.216 380.264 3:30:00 AM 5.35 0.494 97.631 3:30:00 PM 7.461 1.251 380.727 3:45:00 AM 5.391 0.527 105.317 3:45:00 PM 7.51 1.327 415.144 4:00:00 AM 5.322 0.501 98.197 4:00:00 PM 7.648 1.283 411.99 4:15:00 AM 5.313 0.478 91.846 4:15:00 PM 7.725 1.383 449.926 4:30:00 AM 5.479 0.551 112.419 4:30:00 PM 7.734 1.286 418.994 4:45:00 AM 5.556 0.573 119.225 4:45:00 PM 7.778 1.316 427.261 5:00:00 AM 5.677 0.649 139.14 5:00:00 PM 7.672 1.192 384.253 5:15:00 AM 6.023 0.778 180.913 5:15:00 PM 8.038 1.353 463.595 5:30:00 AM 6.308 0.813 201.493 5:30:00 PM 8.044 1.474 505.66 5:45:00 AM 6.451 1.111 283.411 5:45:00 PM 7.697 1.281 414.588 6:00:00 AM 6.607 0.993 259.116 6:00:00 PM 7.839 1.378 456.974 6:15:00 AM 6.776 1.018 278.022 6:15:00 PM 7.883 1.305 428.844 6:30:00 AM 6.691 1.016 266.814 6:30:00 PM 7.933 1.388 467.41 6:45:00 AM 6.91 1.153 322.137 6:45:00 PM 8.133 1.433 486.407 7:00:00 AM 7.114 1.101 321.055 7:00:00 PM 8.19 1.409 480.958 7:15:00 AM 7.223 1.122 333.765 7:15:00 PM 8.312 1.419 508.026 7:30:00 AM 7.431 1.22 371.447 7:30:00 PM 8.192 1.441 483.561 7:45:00 AM 7.476 1.232 380.991 7:45:00 PM 8.022 1.396 477.167 8:00:00 AM 7.619 1.271 403.242 8:00:00 PM 8.32 1.416 507.407 8:15:00 AM 7.613 1.4 440.218 8:15:00 PM 8.193 1.485 521.941 8:30:00 AM 7.537 1.221 381.527 8:30:00 PM 8.343 1.598 575.023 8:45:00 AM 7.463 1.179 365.203 8:45:00 PM 8.58 1.487 548.321 9:00:00 AM 7.517 1.206 370.946 9:00:00 PM 8.499 1.473 542.687 9:15:00 AM 7.549 1.3 410.096 9:15:00 PM 8.434 1.439 524.876 9:30:00 AM 7.509 1.193 370.555 9:30:00 PM 8.484 1.516 556.647 9:45:00 AM 7.508 1.201 374.905 9:45:00 PM 8.384 1.46 521.472 10:00:00 AM 7.596 1.258 398.223 10:00:00 PM 8.626 1.49 559.774 10:15:00 AM 7.587 1.268 400.913 10:15:00 PM 8.518 1.502 555.158 10:30:00 AM 7.538 1.237 389.521 10:30:00 PM 8.277 1.421 503.461 10:45:00 AM 7.637 1.244 398.657 10:45:00 PM 8.104 1.482 513.196 11:00:00 AM 7.75 1.292 419.586 11:00:00 PM 7.752 1.293 422.516 11:15:00 AM 7.789 1.257 413.307 11:15:00 PM 7.529 1.242 386.038 11:30:00 AM 7.736 1.32 430.022 11:30:00 PM 7.352 1.221 371.927 11:45:00 AM 7.74 1.209 394.405 11:45:00 PM 7.238 1.172 349.748 Inches Feet/Sec GPM
Daily Avg: 7.268 1.164 361.545
Daily Min: 5.313 0.478 91.846
Daily Max: 8.626 1.598 575.023
Peak to Avg: 1.59
Thursday - A.M. 7/20/2023 Thursday - P.M. 7/20/2023
DRAFT
742
Project: City of Santa Paula - Sewer Flow Study
Location: 520 Harvard Blvd., Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/21/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
743
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 520 Harvard Blvd.

Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 6.942 1.042 291.292 12:00:00 PM 7.915 1.343 446.623 12:15:00 AM 6.64 0.979 257.115 12:15:00 PM 7.829 1.3 430.324 12:30:00 AM 6.407 0.897 227.199 12:30:00 PM 7.842 1.388 460.611 12:45:00 AM 6.397 0.909 227.714 12:45:00 PM 7.834 1.369 453.689 1:00:00 AM 6.123 0.823 195.762 1:00:00 PM 7.762 1.331 433.098 1:15:00 AM 6.06 0.803 187.181 1:15:00 PM 7.672 1.327 426.248 1:30:00 AM 5.921 0.71 161.303 1:30:00 PM 7.677 1.286 414.951 1:45:00 AM 5.718 0.638 138.016 1:45:00 PM 7.83 1.333 441.25 2:00:00 AM 5.754 0.704 153.805 2:00:00 PM 7.834 1.378 456.513 2:15:00 AM 5.6 0.603 126.9 2:15:00 PM 7.882 1.282 428.212 2:30:00 AM 5.409 0.578 116.005 2:30:00 PM 7.85 1.392 462.603 2:45:00 AM 5.446 1.283 259.821 2:45:00 PM 7.849 1.293 429.426 3:00:00 AM 5.515 1.328 271.205 3:00:00 PM 7.754 1.199 392.039 3:15:00 AM 5.502 1.036 209.526 3:15:00 PM 7.653 1.266 402.838 3:30:00 AM 5.451 1.314 266.442 3:30:00 PM 7.757 1.214 388.745 3:45:00 AM 5.478 0.577 115.998 3:45:00 PM 7.747 1.289 420.699 4:00:00 AM 5.4 0.523 104.2 4:00:00 PM 7.616 1.291 407.259 4:15:00 AM 5.434 0.624 124.518 4:15:00 PM 7.764 1.277 418.076 4:30:00 AM 5.575 0.571 119.425 4:30:00 PM 7.914 1.409 471.541 4:45:00 AM 5.629 0.563 118.643 4:45:00 PM 7.796 1.326 436.654 5:00:00 AM 5.876 0.686 147.62 5:00:00 PM 7.76 1.398 454.883 5:15:00 AM 6.021 0.759 175.854 5:15:00 PM 7.751 1.321 428.273 5:30:00 AM 6.081 0.795 185.277 5:30:00 PM 7.801 1.282 420.413 5:45:00 AM 6.274 0.874 214.892 5:45:00 PM 7.84 1.32 436.126 6:00:00 AM 6.376 0.906 227.734 6:00:00 PM 7.916 1.409 473.378 6:15:00 AM 6.479 0.961 243.988 6:15:00 PM 8.242 1.419 499.157 6:30:00 AM 6.595 0.922 242.621 6:30:00 PM 7.998 1.29 431.677 6:45:00 AM 6.711 1.055 283.695 6:45:00 PM 7.774 1.313 430.751 7:00:00 AM 6.808 1.053 285.284 7:00:00 PM 7.747 1.268 413.436 7:15:00 AM 7.059 1.089 314.301 7:15:00 PM 7.804 1.261 415.708 7:30:00 AM 7.201 1.162 339.177 7:30:00 PM 8.094 1.358 460.289 7:45:00 AM 7.382 1.154 349.412 7:45:00 PM 7.977 1.317 444.303 8:00:00 AM 7.436 1.149 351.183 8:00:00 PM 8.263 1.434 509.579 8:15:00 AM 7.537 1.245 386.067 8:15:00 PM 7.959 1.334 451.116 8:30:00 AM 7.566 1.09 341.171 8:30:00 PM 7.97 1.356 459.686 8:45:00 AM 7.596 1.116 350.833 8:45:00 PM 8.146 1.429 498.24 9:00:00 AM 7.498 1.261 394.151 9:00:00 PM 8.167 1.408 492.656 9:15:00 AM 7.548 1.289 406.736 9:15:00 PM 8.258 1.362 476.4 9:30:00 AM 7.489 1.254 391.409 9:30:00 PM 8.301 1.446 516.849 9:45:00 AM 7.53 1.274 399.558 9:45:00 PM 8.234 1.456 503.255 10:00:00 AM 7.542 1.283 404.296 10:00:00 PM 8.208 1.363 480.232 10:15:00 AM 7.787 1.299 421.581 10:15:00 PM 8.237 1.398 490.589 10:30:00 AM 7.757 1.286 416.814 10:30:00 PM 8.131 1.28 445.39 10:45:00 AM 8.069 1.325 440.046 10:45:00 PM 7.929 1.342 451.866 11:00:00 AM 7.86 1.378 458.63 11:00:00 PM 7.761 1.336 437.098 11:15:00 AM 7.737 1.286 419.205 11:15:00 PM 7.62 1.247 394.649 11:30:00 AM 7.777 1.323 434.19 11:30:00 PM 7.375 1.16 354.878 11:45:00 AM 7.966 1.397 473.066 11:45:00 PM 7.208 1.124 333.383 Inches Feet/Sec GPM
Daily Avg: 7.255 1.167 359.002
Daily Min: 5.4 0.523 104.2
Daily Max: 8.301 1.456 516.849
Peak to Avg: 1.44
Friday - A.M. 7/21/2023 Friday - P.M. 7/21/2023
DRAFT
744
Project: City of Santa Paula - Sewer Flow Study
Location: 520 Harvard Blvd., Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/22/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
745
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 520 Harvard Blvd.

Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 7.175 1.082 319.028 12:00:00 PM 8.599 1.621 606.353 12:15:00 AM 6.696 1.371 360.572 12:15:00 PM 8.762 1.505 576.68 12:30:00 AM 6.561 0.896 233.561 12:30:00 PM 8.644 1.504 566.402 12:45:00 AM 6.459 1.065 272.528 12:45:00 PM 8.237 1.415 493.556 1:00:00 AM 6.408 0.917 228.843 1:00:00 PM 8.571 1.424 530.484 1:15:00 AM 6.154 1.077 253.454 1:15:00 PM 8.613 1.461 539.243 1:30:00 AM 6.042 1.509 352.5 1:30:00 PM 8.494 1.533 552.582 1:45:00 AM 5.903 1.007 227.954 1:45:00 PM 8.505 1.47 541.835 2:00:00 AM 5.819 1.411 305.224 2:00:00 PM 8.39 1.419 513.513 2:15:00 AM 5.664 0.622 132.916 2:15:00 PM 8.219 1.397 492.745 2:30:00 AM 5.577 0.554 115.84 2:30:00 PM 8.297 1.481 524.506 2:45:00 AM 5.624 0.605 126.724 2:45:00 PM 8.097 1.359 460.427 3:00:00 AM 5.463 0.523 104.41 3:00:00 PM 7.918 1.29 429.256 3:15:00 AM 5.382 0.519 102.091 3:15:00 PM 8.059 1.391 478.303 3:30:00 AM 5.316 0.501 97.83 3:30:00 PM 8.167 1.387 480.083 3:45:00 AM 5.358 0.549 108.659 3:45:00 PM 8.036 1.313 431.169 4:00:00 AM 5.382 0.505 100.645 4:00:00 PM 7.836 1.321 436.992 4:15:00 AM 5.302 0.483 94.153 4:15:00 PM 7.979 1.309 428.689 4:30:00 AM 5.351 0.514 100.452 4:30:00 PM 8.103 1.43 495.164 4:45:00 AM 5.4 0.534 105.531 4:45:00 PM 8.181 1.342 462.565 5:00:00 AM 5.46 0.538 109.298 5:00:00 PM 7.827 1.291 422.694 5:15:00 AM 5.675 0.635 136.147 5:15:00 PM 7.895 1.273 412.203 5:30:00 AM 5.706 0.647 139.755 5:30:00 PM 7.995 1.356 461.466 5:45:00 AM 5.704 0.673 145.278 5:45:00 PM 8.212 1.41 496.81 6:00:00 AM 5.871 0.77 169.89 6:00:00 PM 8.145 1.443 503.015 6:15:00 AM 5.987 0.841 194.037 6:15:00 PM 7.869 1.412 467.949 6:30:00 AM 6.058 0.79 185.307 6:30:00 PM 7.787 1.311 430.978 6:45:00 AM 6.168 0.809 189.166 6:45:00 PM 7.67 1.295 414.792 7:00:00 AM 6.388 0.949 239.34 7:00:00 PM 7.623 1.308 418.139 7:15:00 AM 6.571 0.902 235.423 7:15:00 PM 7.679 1.233 394.38 7:30:00 AM 6.831 1.101 303.992 7:30:00 PM 7.812 1.31 432.343 7:45:00 AM 6.99 1.14 323.425 7:45:00 PM 7.577 1.283 402.378 8:00:00 AM 7.165 1.087 316.402 8:00:00 PM 7.793 1.291 424.888 8:15:00 AM 7.334 1.219 370.14 8:15:00 PM 7.815 1.41 465.373 8:30:00 AM 7.607 1.285 398.727 8:30:00 PM 7.689 1.26 407.412 8:45:00 AM 7.774 1.371 449.743 8:45:00 PM 7.756 1.272 415.801 9:00:00 AM 7.966 1.378 459.07 9:00:00 PM 7.653 1.322 423.732 9:15:00 AM 7.914 1.297 427.77 9:15:00 PM 7.664 1.233 392.236 9:30:00 AM 7.879 1.279 422.896 9:30:00 PM 7.784 1.348 443.05 9:45:00 AM 7.971 1.328 441.667 9:45:00 PM 7.853 1.336 444.136 10:00:00 AM 8.228 1.368 463.504 10:00:00 PM 7.923 1.401 466.884 10:15:00 AM 8.309 1.394 498.701 10:15:00 PM 7.704 1.349 437.29 10:30:00 AM 8.307 1.372 482.259 10:30:00 PM 7.784 1.31 428.136 10:45:00 AM 8.663 1.438 543.222 10:45:00 PM 7.574 1.24 390.827 11:00:00 AM 8.655 1.472 548.582 11:00:00 PM 7.551 1.251 391.556 11:15:00 AM 8.563 1.452 536.933 11:15:00 PM 7.55 1.263 398.413 11:30:00 AM 8.368 1.41 509.106 11:30:00 PM 7.157 1.139 334.867 11:45:00 AM 8.594 1.433 535.839 11:45:00 PM 7.028 1.09 311.007 Inches Feet/Sec GPM
Daily Avg: 7.312 1.172 369.187
Daily Min: 5.302 0.483 94.153
Daily Max: 8.762 1.621 606.353
Peak to Avg: 1.64
Saturday - A.M. 7/22/2023 Saturday - P.M. 7/22/2023
DRAFT
746
Project: City of Santa Paula - Sewer Flow Study
Location: 520 Harvard Blvd., Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/23/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
747
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 520 Harvard Blvd.

Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 6.961 1.22 345.596 12:00:00 PM 8.568 1.472 548.167 12:15:00 AM 6.974 1.116 316.689 12:15:00 PM 8.545 1.49 549.244 12:30:00 AM 6.8 0.947 259.878 12:30:00 PM 8.406 1.521 549.154 12:45:00 AM 6.572 0.972 252.351 12:45:00 PM 8.371 1.435 518.632 1:00:00 AM 6.47 0.869 220.113 1:00:00 PM 8.081 1.428 492.781 1:15:00 AM 6.28 0.851 208.485 1:15:00 PM 8.197 1.554 530.939 1:30:00 AM 6.204 0.8 193.803 1:30:00 PM 8.341 1.551 557.584 1:45:00 AM 6.009 0.756 175.304 1:45:00 PM 8.336 1.466 520.042 2:00:00 AM 5.788 0.658 144.891 2:00:00 PM 8.152 1.429 498.836 2:15:00 AM 5.757 0.635 138.264 2:15:00 PM 7.844 1.267 420.445 2:30:00 AM 5.775 0.628 137.533 2:30:00 PM 7.641 1.308 419.261 2:45:00 AM 5.732 0.687 149.353 2:45:00 PM 7.753 1.383 451.945 3:00:00 AM 5.588 0.587 122.306 3:00:00 PM 7.919 1.33 445.547 3:15:00 AM 5.614 0.575 121.356 3:15:00 PM 7.921 1.37 455.462 3:30:00 AM 5.534 0.558 115.475 3:30:00 PM 7.99 1.36 462.388 3:45:00 AM 5.567 0.621 127.818 3:45:00 PM 7.964 1.475 491.9 4:00:00 AM 5.609 0.552 116.389 4:00:00 PM 7.994 1.344 450.768 4:15:00 AM 5.465 0.493 98.772 4:15:00 PM 7.865 1.311 435.99 4:30:00 AM 5.346 0.49 96.635 4:30:00 PM 7.892 1.356 453.828 4:45:00 AM 5.34 0.51 100.421 4:45:00 PM 7.845 1.343 445.753 5:00:00 AM 5.416 0.489 97.858 5:00:00 PM 7.661 1.36 437.602 5:15:00 AM 5.476 0.537 108.454 5:15:00 PM 7.779 1.317 430.822 5:30:00 AM 5.438 0.53 107.029 5:30:00 PM 7.781 1.406 461.729 5:45:00 AM 5.516 0.521 107.346 5:45:00 PM 7.649 1.353 434.525 6:00:00 AM 5.678 0.592 127.101 6:00:00 PM 7.593 1.21 384.875 6:15:00 AM 5.777 0.705 153.487 6:15:00 PM 7.714 1.306 416.009 6:30:00 AM 5.844 0.681 151.443 6:30:00 PM 7.676 1.153 366.781 6:45:00 AM 5.92 0.719 162.067 6:45:00 PM 7.825 1.307 432.394 7:00:00 AM 6.546 0.882 229.879 7:00:00 PM 7.953 1.297 438.447 7:15:00 AM 6.683 0.958 256.846 7:15:00 PM 7.921 1.361 453.43 7:30:00 AM 6.778 0.99 270.319 7:30:00 PM 7.924 1.422 477.934 7:45:00 AM 6.944 0.987 278.598 7:45:00 PM 7.858 1.385 452.202 8:00:00 AM 7.127 1.227 348.507 8:00:00 PM 7.979 1.346 452.871 8:15:00 AM 7.2 1.421 421.012 8:15:00 PM 7.916 1.342 449.732 8:30:00 AM 7.438 1.323 402.495 8:30:00 PM 8.132 1.378 479.402 8:45:00 AM 7.813 1.356 432.628 8:45:00 PM 8.301 1.479 520.61 9:00:00 AM 7.944 1.388 468.276 9:00:00 PM 8.501 1.48 534.322 9:15:00 AM 8.105 1.442 499.017 9:15:00 PM 8.407 1.451 522.993 9:30:00 AM 8.302 1.447 517.358 9:30:00 PM 8.392 1.479 535.958 9:45:00 AM 8.423 1.444 526.026 9:45:00 PM 8.609 1.484 555.896 10:00:00 AM 8.499 1.445 518.494 10:00:00 PM 8.357 1.485 524.356 10:15:00 AM 8.447 1.502 546.912 10:15:00 PM 8.42 1.491 543.016 10:30:00 AM 8.572 1.461 535.785 10:30:00 PM 8.317 1.44 515.823 10:45:00 AM 8.6 1.502 542.28 10:45:00 PM 7.978 1.375 462.017 11:00:00 AM 8.587 1.52 567.674 11:00:00 PM 7.91 1.313 440.493 11:15:00 AM 8.825 1.653 614.296 11:15:00 PM 7.674 1.245 401.357 11:30:00 AM 8.669 1.496 565.471 11:30:00 PM 7.366 1.141 344.553 11:45:00 AM 8.455 1.754 637.3 11:45:00 PM 7.153 1.156 335.013 Inches Feet/Sec GPM
Daily Avg: 7.366 1.173 376.775
Daily Min: 5.34 0.489 96.635
Daily Max: 8.825 1.754 637.3
Peak to Avg: 1.69
Sunday - A.M. 7/23/2023 Sunday - P.M. 7/23/2023
DRAFT
748
Project: City of Santa Paula - Sewer Flow Study
Location: 520 Harvard Blvd., Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/24/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
749
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 520 Harvard Blvd.

Time Level Velocity Velocity Time Level Velocity Flow
12:10:00 AM 6.895 1.082 298.847 12:00:00 PM 7.807 1.293 421.347 12:15:00 AM 6.735 1.237 324.137 12:15:00 PM 7.839 1.25 414.605 12:30:00 AM 6.531 0.9 233.844 12:30:00 PM 7.704 1.261 408.583 12:45:00 AM 6.251 0.88 215.535 12:45:00 PM 7.795 1.249 406.465 1:00:00 AM 6.06 0.805 188.626 1:00:00 PM 7.695 1.313 419.381 1:15:00 AM 5.992 0.757 173.082 1:15:00 PM 7.618 1.201 383.493 1:30:00 AM 5.979 0.749 165.337 1:30:00 PM 7.66 1.221 392.784 1:45:00 AM 5.739 0.681 147.13 1:45:00 PM 7.562 1.225 386.087 2:00:00 AM 5.653 0.604 128.757 2:00:00 PM 7.641 1.198 383.517 2:15:00 AM 5.636 0.643 136.608 2:15:00 PM 7.57 1.187 373.335 2:30:00 AM 5.532 0.597 122.481 2:30:00 PM 7.582 1.174 372.26 2:45:00 AM 5.481 0.566 115.223 2:45:00 PM 7.503 1.202 376.256 3:00:00 AM 5.536 0.6 124.389 3:00:00 PM 7.795 1.241 408.343 3:15:00 AM 5.455 0.578 117.278 3:15:00 PM 7.692 1.301 415.384 3:30:00 AM 5.501 0.624 128.177 3:30:00 PM 7.578 1.188 374.569 3:45:00 AM 5.475 0.618 126.093 3:45:00 PM 7.658 1.233 387.186 4:00:00 AM 5.481 0.985 200.228 4:00:00 PM 7.742 1.217 397.111 4:15:00 AM 5.486 0.995 202.827 4:15:00 PM 7.678 1.221 392.934 4:30:00 AM 5.634 0.682 144.795 4:30:00 PM 7.55 1.086 342.081 4:45:00 AM 5.742 0.713 155.246 4:45:00 PM 7.804 1.227 395.667 5:00:00 AM 5.759 0.696 151.645 5:00:00 PM 7.795 1.17 374.289 5:15:00 AM 5.93 0.82 185.426 5:15:00 PM 7.922 1.171 393.604 5:30:00 AM 6.192 0.858 207.395 5:30:00 PM 7.928 1.223 411.562 5:45:00 AM 6.402 0.943 233.123 5:45:00 PM 8.063 1.132 389.555 6:00:00 AM 6.55 1.01 263.506 6:00:00 PM 8.014 1.201 409.879 6:15:00 AM 6.515 1.003 259.616 6:15:00 PM 7.998 1.228 406.386 6:30:00 AM 6.693 1.029 276.465 6:30:00 PM 7.91 1.032 344.381 6:45:00 AM 6.738 1.111 296.512 6:45:00 PM 8.127 1.19 408.586 7:00:00 AM 7.085 1.301 377.293 7:00:00 PM 8.342 1.242 446.87 7:15:00 AM 7.162 1.246 366.678 7:15:00 PM 8.017 1.215 415.063 7:30:00 AM 7.229 1.16 345.587 7:30:00 PM 7.983 1.212 411.646 7:45:00 AM 7.374 1.202 367.69 7:45:00 PM 8.365 1.297 468.171 8:00:00 AM 7.392 1.242 380.661 8:00:00 PM 8.303 1.268 453.53 8:15:00 AM 7.687 1.267 409.454 8:15:00 PM 8.395 1.333 483.372 8:30:00 AM 7.362 1.192 363.687 8:30:00 PM 8.406 1.227 440.868 8:45:00 AM 7.501 1.296 405.483 8:45:00 PM 8.538 1.121 407.898 9:00:00 AM 7.519 1.312 411.835 9:00:00 PM 8.561 1.332 488.331 9:15:00 AM 7.517 1.299 407.655 9:15:00 PM 8.485 1.407 511.168 9:30:00 AM 7.527 1.275 400.627 9:30:00 PM 8.563 1.29 479.825 9:45:00 AM 7.728 1.318 428.986 9:45:00 PM 8.497 1.262 456.536 10:00:00 AM 7.688 1.29 416.957 10:00:00 PM 8.457 1.341 486.644 10:15:00 AM 7.628 1.265 404.572 10:15:00 PM 8.473 1.263 459.768 10:30:00 AM 7.795 1.287 423.504 10:30:00 PM 8.191 1.269 442.903 10:45:00 AM 7.776 1.336 428.527 10:45:00 PM 8.168 1.252 438.086 11:00:00 AM 7.616 1.272 405.954 11:00:00 PM 8.007 1.23 419.485 11:15:00 AM 7.695 1.293 418.562 11:15:00 PM 7.549 1.16 365.875 11:30:00 AM 7.794 1.304 424.494 11:30:00 PM 7.216 0.967 282.855 11:45:00 AM 7.911 1.343 450.58 11:45:00 PM 7.049 0.896 257.542 Inches Feet/Sec GPM
Daily Avg: 7.289 1.112 343.877
Daily Min: 5.455 0.566 115.223
Daily Max: 8.563 1.407 511.168
Peak to Avg: 1.49
Monday - A.M. 7/24/2023 Monday - P.M. 7/24/2023
DRAFT
750
Sewer Line Flow Study Summary
Maximum Level Maximum Velocity Maximum Flow Rate
Average:

Maximum:

Minimum:

1.066

1.754

0.408
Velocity - Feet per Second
Average:

Maximum:

Minimum:

Max d/D:

7.362

9.048

5.248

50.3%
Level - Inches
Average:

Maximum::

Minimum:

Peak to Average
340.898
637.300

73.445

1.70 Flow Rate - Gallons Per Minute
Project: City of Santa Paula - Sewer Flow Study
Location: 520 Harvard Blvd, Santa Paula, CA
Pipe Size: 18” VCP
Time Period: 7/11/2023, 12:00 a.m. - 7/25/2023, 12:00 a.m.

DRAFT
751
1868 Palma Drive, Suite I, Ventura, CA 93003 www.goldcoastenv.com 805.498.3811 ph.

Manhole - Layout

CITY OF SANTA PAULA - SEWER FLOW STUDY
MH Location: 500 Acacia
Santa Paula, CA 93060

Pipe Size: 24” VCP
Time Period: 7/11/2023 - 12:00 a.m. to
7/25/2023- 12:00 a.m.

GPS: 34.337539, -119.081607
Equipment
N
Manhole
E
Gold G C Coast Environmental
E Specializing in process instrumentation and calibration.

G C
Teledyne Isco 2150 Area Velocity Flow Meter with 10’
measuring range:

1.5 to +1.5 m/s)
 ±2% of reading from 5 to 20 ft/s (1.5 to 6.1 m/s)
Method Of Insertion:
 24 inch line requires Confined Space Entry.

Flow
DRAFT
752
Project: City of Santa Paula - Sewer Flow Study
Location: 500 Acacia, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/11/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
753
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 500 Acacia
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 PM 10.904 1.356 845.223
12:15:00 AM 9.734 1.184 635.376 12:15:00 PM 10.968 1.418 890.063 12:30:00 AM 9.453 1.155 595.643 12:30:00 PM 11.073 1.347 856.621 12:45:00 AM 9.056 0.989 481.778 12:45:00 PM 11.097 1.296 826.204 1:00:00 AM 8.825 0.972 457.009 1:00:00 PM 11.046 1.345 852.329 1:15:00 AM 8.572 0.91 411.633 1:15:00 PM 11.019 1.298 819.984 1:30:00 AM 8.379 0.826 362.212 1:30:00 PM 11.127 1.243 795.54 1:45:00 AM 8.025 0.711 293.95 1:45:00 PM 10.989 1.272 800.844 2:00:00 AM 7.751 0.64 252.256 2:00:00 PM 10.767 1.234 756.263 2:15:00 AM 7.623 0.764 293.942 2:15:00 PM 10.927 1.394 871.18 2:30:00 AM 7.539 0.709 268.773 2:30:00 PM 11.25 1.299 842.646 2:45:00 AM 7.536 0.592 224.171 2:45:00 PM 11.132 1.338 856.459 3:00:00 AM 7.345 0.669 244.713 3:00:00 PM 10.979 1.314 826.037 3:15:00 AM 7.215 0.545 194.373 3:15:00 PM 10.868 1.306 810.057 3:30:00 AM 7.254 0.59 212.218 3:30:00 PM 10.752 1.236 755.972 3:45:00 AM 7.215 0.655 233.581 3:45:00 PM 10.831 1.415 873.822 4:00:00 AM 7.119 0.641 224.525 4:00:00 PM 10.842 1.349 834.198 4:15:00 AM 7.082 0.562 195.359 4:15:00 PM 10.906 1.372 855.379 4:30:00 AM 7.169 0.616 217.835 4:30:00 PM 10.986 1.274 801.615 4:45:00 AM 7.274 0.709 255.729 4:45:00 PM 10.851 1.315 814.484 5:00:00 AM 7.318 0.696 253.264 5:00:00 PM 10.947 1.327 831.396 5:15:00 AM 7.454 0.609 227.363 5:15:00 PM 11.123 1.196 764.582 5:30:00 AM 7.695 0.69 269.216 5:30:00 PM 11.457 1.363 905.363 5:45:00 AM 7.781 0.732 289.765 5:45:00 PM 11.53 1.368 916.654 6:00:00 AM 8.222 0.846 361.288 6:00:00 PM 11.585 1.291 870.367 6:15:00 AM 8.546 0.925 416.648 6:15:00 PM 11.455 1.448 961.964 6:30:00 AM 8.815 0.968 454.356 6:30:00 PM 11.444 1.369 908.49 6:45:00 AM 8.918 0.454 216.404 6:45:00 PM 11.655 1.417 962.4 7:00:00 AM 9.295 1.091 550.083 7:00:00 PM 11.647 1.395 946.414 7:15:00 AM 9.495 1.116 579.244 7:15:00 PM 11.558 1.334 896.604 7:30:00 AM 9.809 1.099 595.975 7:30:00 PM 11.574 1.415 952.36 7:45:00 AM 10.359 1.297 755.473 7:45:00 PM 11.673 1.511 1028.52 8:00:00 AM 10.952 1.274 798.281 8:00:00 PM 11.74 1.358 931.272 8:15:00 AM 10.795 1.217 748.355 8:15:00 PM 11.803 1.474 1017.37 8:30:00 AM 10.5 1.331 789.119 8:30:00 PM 11.84 1.495 1036.24 8:45:00 AM 10.757 1.371 839.113 8:45:00 PM 11.864 1.444 1003.08 9:00:00 AM 10.886 1.391 864.907 9:00:00 PM 11.885 1.458 1015.67 9:15:00 AM 10.844 1.307 808.319 9:15:00 PM 11.912 1.452 1014.34 9:30:00 AM 10.779 1.293 793.823 9:30:00 PM 12.039 1.398 989.995 9:45:00 AM 10.639 1.336 806.189 9:45:00 PM 12.227 1.439 1039.15 10:00:00 AM 10.708 1.265 769.545 10:00:00 PM 12.355 1.461 1068.97 10:15:00 AM 10.843 1.358 840.213 10:15:00 PM 12.421 1.541 1134.83 10:30:00 AM 10.918 1.412 881.265 10:30:00 PM 12.226 1.449 1045.95 10:45:00 AM 10.811 1.26 776.691 10:45:00 PM 11.934 1.44 1007.95 11:00:00 AM 10.951 1.297 812.61 11:00:00 PM 11.634 1.377 933.162 11:15:00 AM 10.956 1.211 759.125 11:15:00 PM 11.229 1.352 875.305 11:30:00 AM 11.194 1.317 849.139 11:30:00 PM 10.944 1.288 806.527 11:45:00 AM 10.977 1.329 835.116 11:45:00 PM 10.545 1.299 774.781 Inches Feet/Sec GPM
Daily Avg: 10.242 1.174 707.585
Daily Min: 7.082 0.454 194.373
Daily Max: 12.421 1.541 1134.83
Peak to Avg: 1.60
Tuesday- A.M. 7/11/2023 Tuesday- P.M. 7/11/2023
DRAFT
754
Project: City of Santa Paula - Sewer Flow Study
Location: 500 Acacia, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/12/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
755
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 500 Acacia
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 10.138 1.266 717.048 12:00:00 PM 10.818 1.325 817.152 12:15:00 AM 9.658 1.072 569.21 12:15:00 PM 10.757 1.287 788.197 12:30:00 AM 9.49 1.166 604.568 12:30:00 PM 10.815 1.287 793.376 12:45:00 AM 9.141 1.003 494.757 12:45:00 PM 10.605 1.248 749.987 1:00:00 AM 8.902 0.994 473.136 1:00:00 PM 10.699 1.248 758.803 1:15:00 AM 8.568 0.911 411.57 1:15:00 PM 10.595 1.201 720.996 1:30:00 AM 8.236 0.837 358.402 1:30:00 PM 10.596 1.196 718.024 1:45:00 AM 7.999 0.777 319.484 1:45:00 PM 10.502 1.186 703.459 2:00:00 AM 7.839 0.722 288.878 2:00:00 PM 10.458 1.269 748.507 2:15:00 AM 7.604 0.719 275.871 2:15:00 PM 10.485 1.186 701.979 2:30:00 AM 7.55 0.704 267.582 2:30:00 PM 10.574 1.169 699.727 2:45:00 AM 7.436 0.632 235.252 2:45:00 PM 10.842 1.217 752.919 3:00:00 AM 7.248 0.689 247.379 3:00:00 PM 10.451 1.249 736.119 3:15:00 AM 7.148 0.62 218.476 3:15:00 PM 10.526 1.308 778.166 3:30:00 AM 7.198 0.676 240.466 3:30:00 PM 10.609 1.164 699.776 3:45:00 AM 7.16 0.672 237.111 3:45:00 PM 10.456 1.25 737.319 4:00:00 AM 7.147 0.598 210.595 4:00:00 PM 10.495 1.246 738.563 4:15:00 AM 7.007 0.543 185.876 4:15:00 PM 10.511 1.369 812.994 4:30:00 AM 6.964 0.57 193.729 4:30:00 PM 10.574 1.322 791.127 4:45:00 AM 6.999 0.602 205.837 4:45:00 PM 10.549 1.33 793.442 5:00:00 AM 7.02 0.561 192.808 5:00:00 PM 10.655 1.312 793.132 5:15:00 AM 7.207 0.699 248.934 5:15:00 PM 10.936 1.289 806.584 5:30:00 AM 7.485 0.754 283.195 5:30:00 PM 11.021 1.407 889.121 5:45:00 AM 7.714 0.744 291.29 5:45:00 PM 11.124 1.347 861.335 6:00:00 AM 8.251 0.904 387.822 6:00:00 PM 11.305 1.341 875.603 6:15:00 AM 8.43 0.866 382.619 6:15:00 PM 11.274 1.362 886.429 6:30:00 AM 8.801 0.977 457.915 6:30:00 PM 11.299 1.354 883.86 6:45:00 AM 9.058 1.016 494.772 6:45:00 PM 11.353 1.232 809.292 7:00:00 AM 9.423 1.154 592.776 7:00:00 PM 11.376 1.344 885.003 7:15:00 AM 9.701 1.147 612.587 7:15:00 PM 11.491 1.293 862.622 7:30:00 AM 9.955 1.097 606.34 7:30:00 PM 11.499 1.374 917.055 7:45:00 AM 10.91 1.363 850.104 7:45:00 PM 11.519 1.328 888.786 8:00:00 AM 12.26 1.611 1166.9 8:00:00 PM 11.367 1.339 880.828 8:15:00 AM 12.693 1.604 1213.71 8:15:00 PM 11.62 1.372 928.18 8:30:00 AM 12.411 1.522 1120.13 8:30:00 PM 11.707 1.549 1057.82 8:45:00 AM 12.287 1.485 1078.54 8:45:00 PM 11.882 1.429 994.896 9:00:00 AM 12.259 1.637 1185.81 9:00:00 PM 11.796 1.409 971.915 9:15:00 AM 12.227 1.547 1117.08 9:15:00 PM 11.787 1.335 919.929 9:30:00 AM 11.992 1.46 1028.56 9:30:00 PM 11.937 1.461 1023.17 9:45:00 AM 11.446 1.365 905.573 9:45:00 PM 12.076 1.441 1024.08 10:00:00 AM 11.151 1.258 807.06 10:00:00 PM 12.152 1.438 1029.92 10:15:00 AM 10.875 1.218 756.585 10:15:00 PM 12.055 1.473 1044.54 10:30:00 AM 10.568 1.28 765.366 10:30:00 PM 12.049 1.367 969.03 10:45:00 AM 10.581 1.267 759.049 10:45:00 PM 11.866 1.428 992.415 11:00:00 AM 10.669 1.365 826.589 11:00:00 PM 11.573 1.48 996.403 11:15:00 AM 10.595 1.3 780.139 11:15:00 PM 11.245 1.34 868.958 11:30:00 AM 10.592 1.246 747.411 11:30:00 PM 10.914 1.227 765.463 11:45:00 AM 10.676 1.254 760.153 11:45:00 PM 10.67 1.318 798.408 Inches Feet/Sec GPM
Daily Avg: 10.210 1.175 706.562
Daily Min: 6.964 0.543 185.876
Daily Max: 12.693 1.637 1213.71
Peak to Avg: 1.72
Wednesday - A.M. 7/12/2023 Wednesday - P.M. 7/12/2023
DRAFT
756
Project: City of Santa Paula - Sewer Flow Study
Location: 500 Acacia, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/13/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
757
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 500 Acacia
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 10.274 1.144 659.515 12:00:00 PM 10.94 1.275 798.287 12:15:00 AM 9.952 1.089 601.785 12:15:00 PM 11.194 1.398 901.548 12:30:00 AM 9.611 1.065 561.961 12:30:00 PM 11.514 1.343 897.803 12:45:00 AM 9.362 1.016 517.5 12:45:00 PM 11.011 1.256 792.957 1:00:00 AM 9.067 0.936 456.66 1:00:00 PM 10.938 1.287 804.983 1:15:00 AM 8.789 0.842 394.036 1:15:00 PM 10.939 1.308 818.432 1:30:00 AM 8.54 0.78 350.713 1:30:00 PM 10.954 1.33 833.505 1:45:00 AM 8.195 0.733 311.57 1:45:00 PM 10.903 1.228 765.167 2:00:00 AM 7.993 0.789 324.11 2:00:00 PM 10.874 1.329 825.37 2:15:00 AM 7.834 0.741 296.297 2:15:00 PM 10.865 1.26 781.307 2:30:00 AM 7.725 0.676 264.911 2:30:00 PM 10.828 1.267 782.295 2:45:00 AM 7.634 0.682 263.191 2:45:00 PM 10.788 1.282 787.964 3:00:00 AM 7.556 0.623 236.794 3:00:00 PM 10.881 1.399 869.647 3:15:00 AM 7.437 0.609 226.606 3:15:00 PM 11.036 1.248 790.049 3:30:00 AM 7.308 0.522 189.496 3:30:00 PM 10.881 1.286 799.009 3:45:00 AM 7.291 0.578 209.272 3:45:00 PM 10.843 1.146 708.684 4:00:00 AM 7.368 0.614 225.665 4:00:00 PM 10.824 1.2 740.608 4:15:00 AM 7.376 0.609 224.127 4:15:00 PM 10.755 1.11 679.31 4:30:00 AM 7.354 0.55 201.392 4:30:00 PM 10.747 1.232 753.236 4:45:00 AM 7.373 0.575 211.247 4:45:00 PM 10.827 1.232 760.497 5:00:00 AM 7.461 0.617 230.769 5:00:00 PM 11.07 1.227 779.898 5:15:00 AM 7.594 0.709 271.553 5:15:00 PM 11.52 1.273 851.739 5:30:00 AM 7.802 0.626 248.785 5:30:00 PM 11.592 1.395 940.621 5:45:00 AM 7.941 0.576 234.57 5:45:00 PM 11.466 1.315 874.843 6:00:00 AM 8.312 0.74 249.72 6:00:00 PM 11.557 1.315 883.306 6:15:00 AM 8.612 0.871 396.406 6:15:00 PM 11.642 1.379 935.485 6:30:00 AM 8.925 0.928 442.976 6:30:00 PM 11.498 1.29 860.753 6:45:00 AM 9.097 0.979 479.904 6:45:00 PM 11.715 1.354 925.575 7:00:00 AM 9.38 1.037 529.358 7:00:00 PM 11.791 1.301 896.526 7:15:00 AM 9.708 1.07 572.089 7:15:00 PM 11.834 1.439 996.649 7:30:00 AM 9.883 1.142 625.403 7:30:00 PM 12.014 1.386 978.614 7:45:00 AM 10.317 1.07 620.009 7:45:00 PM 11.838 1.383 958.095 8:00:00 AM 10.857 1.344 832.706 8:00:00 PM 11.798 1.325 913.942 8:15:00 AM 10.86 1.349 836.295 8:15:00 PM 11.825 1.404 971.641 8:30:00 AM 10.836 1.034 639.165 8:30:00 PM 11.826 1.397 966.867 8:45:00 AM 10.759 1.211 741.754 8:45:00 PM 11.757 1.406 965.967 9:00:00 AM 10.716 1.184 721.206 9:00:00 PM 11.936 1.48 1036.67 9:15:00 AM 10.782 1.245 764.567 9:15:00 PM 11.83 1.392 963.645 9:30:00 AM 10.904 1.309 815.958 9:30:00 PM 11.902 1.452 1013.33 9:45:00 AM 10.699 1.272 773.173 9:45:00 PM 12.097 1.433 1020.33 10:00:00 AM 10.829 1.214 749.701 10:00:00 PM 12.348 1.519 1110.27 10:15:00 AM 10.933 1.234 771.638 10:15:00 PM 12.269 1.414 1025.76 10:30:00 AM 10.806 1.322 814.119 10:30:00 PM 12.142 1.486 1063.08 10:45:00 AM 10.765 1.294 792.987 10:45:00 PM 11.902 1.408 982.671 11:00:00 AM 10.958 1.413 886.297 11:00:00 PM 11.746 1.107 759.24 11:15:00 AM 10.975 1.37 860.807 11:15:00 PM 11.528 1.391 931.342 11:30:00 AM 10.957 1.337 838.701 11:30:00 PM 11.238 1.354 877.152 11:45:00 AM 10.892 1.213 754.526 11:45:00 PM 10.891 1.28 796.166 Inches Feet/Sec GPM
Daily Avg: 10.310 1.142 691.930
Daily Min: 7.291 0.522 189.496
Daily Max: 12.348 1.519 1110.27
Peak to Avg: 1.60
Thursday - A.M. 7/13/2023 Thursday - P.M. 7/13/2023
DRAFT
758
Project: City of Santa Paula - Sewer Flow Study
Location: 500 Acacia, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/14/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
759
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 500 Acacia
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 10.49 1.193 706.655 12:00:00 PM 12.849 1.689 1298.19 12:15:00 AM 10.158 1.13 641.421 12:15:00 PM 12.826 1.665 1276.64 12:30:00 AM 9.787 1.165 629.34 12:30:00 PM 12.619 1.555 1168.37 12:45:00 AM 9.489 0.975 505.678 12:45:00 PM 12.437 1.547 1141.05 1:00:00 AM 9.24 0.949 474.687 1:00:00 PM 11.824 1.471 1018 1:15:00 AM 9 1.017 491.252 1:15:00 PM 11.158 1.307 839.424 1:30:00 AM 8.747 0.909 422.482 1:30:00 PM 10.92 1.347 840.807 1:45:00 AM 8.445 0.66 292.387 1:45:00 PM 10.673 1.365 827.133 2:00:00 AM 8.385 0.757 332.154 2:00:00 PM 10.715 1.326 807.518 2:15:00 AM 8.328 0.773 335.997 2:15:00 PM 10.664 1.339 810.644 2:30:00 AM 8.06 0.698 290.151 2:30:00 PM 10.713 1.166 710.061 2:45:00 AM 7.901 0.683 276.13 2:45:00 PM 10.868 1.344 834.026 3:00:00 AM 7.751 0.647 254.685 3:00:00 PM 10.864 1.357 841.887 3:15:00 AM 7.713 0.677 264.944 3:15:00 PM 10.682 1.343 814.807 3:30:00 AM 7.584 0.68 259.851 3:30:00 PM 10.619 1.302 783.692 3:45:00 AM 7.452 0.612 228.202 3:45:00 PM 10.564 1.308 781.979 4:00:00 AM 7.49 0.648 243.44 4:00:00 PM 10.626 1.399 842.585 4:15:00 AM 7.56 0.63 239.962 4:15:00 PM 10.534 1.352 805.126 4:30:00 AM 7.498 0.608 228.816 4:30:00 PM 10.604 1.343 807.053 4:45:00 AM 7.443 0.591 220.148 4:45:00 PM 10.646 1.29 779.109 5:00:00 AM 7.541 0.598 227.017 5:00:00 PM 10.727 1.409 859.417 5:15:00 AM 7.669 0.646 250.854 5:15:00 PM 10.846 1.34 829.362 5:30:00 AM 7.856 0.591 237.334 5:30:00 PM 10.729 1.357 828.189 5:45:00 AM 8.043 0.66 273.376 5:45:00 PM 10.855 1.351 836.692 6:00:00 AM 8.465 0.743 330.148 6:00:00 PM 11.109 1.468 937.07 6:15:00 AM 8.606 0.647 294.058 6:15:00 PM 11.068 1.268 805.842 6:30:00 AM 8.959 0.925 443.865 6:30:00 PM 11.027 1.435 907.545 6:45:00 AM 9.166 1.029 509.615 6:45:00 PM 11.114 1.364 871.131 7:00:00 AM 9.534 0.88 459.096 7:00:00 PM 11.182 1.36 876.021 7:15:00 AM 9.717 1.101 589.198 7:15:00 PM 11.254 1.444 937.668 7:30:00 AM 10.017 1.103 614.953 7:30:00 PM 11.049 1.472 933.31 7:45:00 AM 10.135 0.682 385.924 7:45:00 PM 11.238 1.38 894.064 8:00:00 AM 10.351 1.113 647.765 8:00:00 PM 11.187 1.44 928.015 8:15:00 AM 10.709 0.947 576.56 8:15:00 PM 11.23 1.401 907.208 8:30:00 AM 10.782 1.053 646.654 8:30:00 PM 11.082 1.45 922.995 8:45:00 AM 10.853 1.322 818.935 8:45:00 PM 11.159 1.306 838.769 9:00:00 AM 10.983 0.94 591.552 9:00:00 PM 11.239 1.476 956.68 9:15:00 AM 11.016 1.151 726.812 9:15:00 PM 11.199 1.475 951.764 9:30:00 AM 11.027 1.136 718.387 9:30:00 PM 11.095 1.435 914.709 9:45:00 AM 10.873 1.318 818.485 9:45:00 PM 11.154 1.365 876.156 10:00:00 AM 10.938 1.273 796.789 10:00:00 PM 11.237 1.441 933.655 10:15:00 AM 10.908 1.27 791.985 10:15:00 PM 11.197 1.492 962.044 10:30:00 AM 11.032 1.309 828.265 10:30:00 PM 10.985 1.301 818.49 10:45:00 AM 10.984 1.262 794.081 10:45:00 PM 10.92 1.321 824.882 11:00:00 AM 10.942 1.198 749.722 11:00:00 PM 10.896 1.391 865.739 11:15:00 AM 12.302 1.531 1113.58 11:15:00 PM 10.658 1.329 803.526 11:30:00 AM 13.013 1.483 1157.54 11:30:00 PM 10.59 1.372 822.944 11:45:00 AM 13.064 1.753 1375.59 11:45:00 PM 10.419 1.338 785.6 Inches Feet/Sec GPM
Daily Avg: 10.267 1.171 705.868
Daily Min: 7.443 0.591 220.148
Daily Max: 13.064 1.753 1375.59
Peak to Avg: 1.95
Friday - A.M. 7/14/2023 Friday - P.M. 7/14/2023
DRAFT
760
Project: City of Santa Paula - Sewer Flow Study
Location: 500 Acacia, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/15/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
761
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 500 Acacia
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 10.188 1.282 730.785 12:00:00 PM 12.045 1.145 635.013 12:15:00 AM 9.892 1.222 669.576 12:15:00 PM 12.202 1.227 645.543 12:30:00 AM 9.605 1.163 612.757 12:30:00 PM 12.929 1.342 694.25 12:45:00 AM 9.278 0.908 457.064 12:45:00 PM 13.26 1.474 1177.58 1:00:00 AM 9.039 1.071 520.21 1:00:00 PM 12.915 1.574 1217.35 1:15:00 AM 8.798 0.556 260.408 1:15:00 PM 12.423 1.445 1064.15 1:30:00 AM 8.493 0.942 420.363 1:30:00 PM 12.357 1.509 1103.85 1:45:00 AM 8.229 0.837 357.831 1:45:00 PM 12.191 1.42 1021.61 2:00:00 AM 7.955 0.733 299.264 2:00:00 PM 12.201 1.498 1078.34 2:15:00 AM 7.793 0.705 279.869 2:15:00 PM 12.155 1.542 1104.72 2:30:00 AM 7.634 0.74 285.49 2:30:00 PM 12.124 1.282 915.492 2:45:00 AM 7.568 0.703 268.075 2:45:00 PM 12.091 1.57 1117.74 3:00:00 AM 7.429 0.687 255.302 3:00:00 PM 12.044 1.508 1068.21 3:15:00 AM 7.288 0.554 200.442 3:15:00 PM 11.951 1.461 1024.8 3:30:00 AM 7.181 0.578 204.865 3:30:00 PM 11.88 1.469 1022.37 3:45:00 AM 7.076 0.551 191.3 3:45:00 PM 11.841 1.484 1028.77 4:00:00 AM 7.052 0.624 215.54 4:00:00 PM 11.611 1.384 935.217 4:15:00 AM 7.093 0.65 226.642 4:15:00 PM 11.591 1.416 954.982 4:30:00 AM 7.037 0.648 223.207 4:30:00 PM 11.553 1.441 968.019 4:45:00 AM 7.062 0.59 204.307 4:45:00 PM 11.451 1.393 924.635 5:00:00 AM 7.126 0.563 197.5 5:00:00 PM 11.231 1.405 909.924 5:15:00 AM 7.171 0.683 241.582 5:15:00 PM 11.189 1.383 891.331 5:30:00 AM 7.188 0.737 261.54 5:30:00 PM 11.228 1.388 898.595 5:45:00 AM 7.32 0.748 272.189 5:45:00 PM 11.094 1.291 822.991 6:00:00 AM 7.39 0.714 263.311 6:00:00 PM 11.179 1.327 854.058 6:15:00 AM 7.671 0.845 328.2 6:15:00 PM 11.209 1.317 850.315 6:30:00 AM 7.917 0.854 346.183 6:30:00 PM 11.097 1.308 834.074 6:45:00 AM 8.601 0.854 388.003 6:45:00 PM 11.074 1.337 849.982 7:00:00 AM 8.578 0.697 315.314 7:00:00 PM 11.143 1.309 839.292 7:15:00 AM 8.522 0.958 429.584 7:15:00 PM 11.014 1.176 742.583 7:30:00 AM 8.749 0.661 307.509 7:30:00 PM 10.867 1.296 803.858 7:45:00 AM 9.125 1.056 519.716 7:45:00 PM 10.828 1.327 819.393 8:00:00 AM 9.457 1.103 569.527 8:00:00 PM 10.903 1.376 857.185 8:15:00 AM 9.602 1.083 570.682 8:15:00 PM 10.898 1.31 815.537 8:30:00 AM 9.799 1.19 644.312 8:30:00 PM 10.868 1.229 762.407 8:45:00 AM 10.322 1.382 801.436 8:45:00 PM 10.89 1.295 805.766 9:00:00 AM 10.485 1.288 762.692 9:00:00 PM 11.008 1.319 832.226 9:15:00 AM 10.952 1.294 810.893 9:15:00 PM 10.91 1.197 746.291 9:30:00 AM 11.358 1.483 974.546 9:30:00 PM 10.947 1.099 688.348 9:45:00 AM 11.566 1.166 783.995 9:45:00 PM 11.104 1.208 770.852 10:00:00 AM 11.535 1.156 774.81 10:00:00 PM 11.224 1.356 877.642 10:15:00 AM 11.745 1.198 793.001 10:15:00 PM 11.178 1.282 825.1 10:30:00 AM 11.628 1.258 852.01 10:30:00 PM 11.183 1.415 911.202 10:45:00 AM 11.609 0.855 577.89 10:45:00 PM 11.051 1.285 814.675 11:00:00 AM 11.767 1.05 722.057 11:00:00 PM 10.873 1.253 777.897 11:15:00 AM 11.924 0.988 690.706 11:15:00 PM 10.658 1.282 775.442 11:30:00 AM 12.138 0.896 641.264 11:30:00 PM 10.435 1.237 727.885 11:45:00 AM 12.145 0.984 641.71 11:45:00 PM 10.072 1.218 683.857 Inches Feet/Sec GPM
Daily Avg: 10.264 1.126 675.011
Daily Min: 7.037 0.551 191.3
Daily Max: 13.26 1.574 1217.35
Peak to Avg: 1.80
Saturday - A.M. 7/15/2023 Saturday - P.M. 7/15/2023
DRAFT
762
Project: City of Santa Paula - Sewer Flow Study
Location: 500 Acacia, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/16/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
763
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 500 Acacia
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 9.81 1.276 691.965 12:00:00 PM 12.008 1.523 1074.47 12:15:00 AM 9.515 1.217 633.262 12:15:00 PM 11.974 1.451 1020.29 12:30:00 AM 9.363 1.07 544.875 12:30:00 PM 12.104 1.451 1034.12 12:45:00 AM 9.07 1.156 563.942 12:45:00 PM 11.99 1.454 1023.71 1:00:00 AM 8.862 1.03 487 1:00:00 PM 11.887 1.54 1072.75 1:15:00 AM 8.634 1.039 474.455 1:15:00 PM 11.963 1.493 1048.35 1:30:00 AM 8.424 0.994 438.731 1:30:00 PM 11.813 1.577 1090.01 1:45:00 AM 8.229 0.922 394.253 1:45:00 PM 11.388 1.551 1022.35 2:00:00 AM 7.964 0.921 376.634 2:00:00 PM 11.253 1.331 863.758 2:15:00 AM 7.701 0.842 328.923 2:15:00 PM 11.07 1.374 873.175 2:30:00 AM 7.576 0.789 301.25 2:30:00 PM 11.154 1.438 923.174 2:45:00 AM 7.463 0.79 295.325 2:45:00 PM 11.098 1.474 939.749 3:00:00 AM 7.359 0.757 277.625 3:00:00 PM 11.05 1.433 908.601 3:15:00 AM 7.126 0.687 240.841 3:15:00 PM 10.835 1.319 815.096 3:30:00 AM 6.997 0.626 214.11 3:30:00 PM 10.805 1.363 839.17 3:45:00 AM 6.922 0.61 205.374 3:45:00 PM 10.862 1.475 914.533 4:00:00 AM 6.901 0.63 211.406 4:00:00 PM 10.833 1.239 765.348 4:15:00 AM 6.849 0.691 229.383 4:15:00 PM 10.723 1.429 871.442 4:30:00 AM 6.818 0.629 207.535 4:30:00 PM 10.596 1.42 852.042 4:45:00 AM 6.734 0.637 206.42 4:45:00 PM 10.479 1.366 807.736 5:00:00 AM 6.709 0.61 196.573 5:00:00 PM 10.53 1.308 778.74 5:15:00 AM 6.676 0.584 186.873 5:15:00 PM 10.714 1.311 798.491 5:30:00 AM 6.633 0.595 188.976 5:30:00 PM 10.649 1.36 821.377 5:45:00 AM 6.67 0.6 191.782 5:45:00 PM 10.6 1.346 808.064 6:00:00 AM 6.714 0.591 190.608 6:00:00 PM 10.61 1.365 820.686 6:15:00 AM 6.861 0.66 219.683 6:15:00 PM 10.614 1.399 841.504 6:30:00 AM 7.071 0.727 252.144 6:30:00 PM 10.841 1.433 886.282 6:45:00 AM 7.348 0.744 272.144 6:45:00 PM 10.817 1.339 826.008 7:00:00 AM 7.47 0.777 290.805 7:00:00 PM 10.7 1.406 855.022 7:15:00 AM 7.739 0.892 350.454 7:15:00 PM 10.845 1.321 817.283 7:30:00 AM 8.042 0.956 396.271 7:30:00 PM 10.768 1.389 851.708 7:45:00 AM 8.485 0.977 435.573 7:45:00 PM 10.685 1.304 791.287 8:00:00 AM 8.973 1.136 546.545 8:00:00 PM 10.814 1.347 830.575 8:15:00 AM 9.113 1.077 529.101 8:15:00 PM 11.046 1.387 879.167 8:30:00 AM 9.654 1.207 640.408 8:30:00 PM 11.089 1.454 926.159 8:45:00 AM 9.962 1.132 626.209 8:45:00 PM 11.25 1.468 952.857 9:00:00 AM 10.424 1.23 722.475 9:00:00 PM 11.336 1.491 976.998 9:15:00 AM 10.652 1.294 782.042 9:15:00 PM 11.48 1.469 978.173 9:30:00 AM 11.268 1.448 941.771 9:30:00 PM 11.586 1.544 1040.69 9:45:00 AM 11.672 1.441 980.554 9:45:00 PM 11.541 1.631 1093.99 10:00:00 AM 11.627 1.299 879.749 10:00:00 PM 11.804 1.531 1057.21 10:15:00 AM 11.884 1.433 997.991 10:15:00 PM 11.805 1.466 1012.25 10:30:00 AM 11.82 1.531 1058.55 10:30:00 PM 11.685 1.527 1040.69 10:45:00 AM 12.022 1.665 1176.75 10:45:00 PM 11.47 1.513 1006.87 11:00:00 AM 11.893 1.531 1067.23 11:00:00 PM 11.27 1.475 959.474 11:15:00 AM 12.04 1.474 1043.51 11:15:00 PM 11.052 1.491 945.817 11:30:00 AM 12.187 1.544 1110.31 11:30:00 PM 10.637 1.261 760.639 11:45:00 AM 12.16 1.65 1183.12 11:45:00 PM 10.148 1.254 710.845 Inches Feet/Sec GPM
Daily Avg: 9.964 1.212 714.929
Daily Min: 6.633 0.584 186.873
Daily Max: 12.187 1.665 1183.12
Peak to Avg: 1.65
Sunday - A.M. 7/16/2023 Sunday - P.M. 7/16/2023
DRAFT
764
Project: City of Santa Paula - Sewer Flow Study
Location: 500 Acacia, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/17/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
765
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 500 Acacia
Time Level Velocity Velocity Time Level Velocity Flow
12:10:00 AM 9.771 1.308 705.196 12:00:00 PM 11.006 1.44 908.036 12:15:00 AM 9.452 1.231 635.24 12:15:00 PM 10.976 1.456 915.291 12:30:00 AM 9.1 1.255 615.211 12:30:00 PM 10.968 1.431 898.637 12:45:00 AM 8.763 1.146 533.939 12:45:00 PM 11.036 1.352 855.874 1:00:00 AM 8.485 1.005 448.205 1:00:00 PM 11.04 1.414 895.615 1:15:00 AM 8.185 0.872 370.232 1:15:00 PM 10.893 1.44 896.463 1:30:00 AM 7.849 0.828 332.022 1:30:00 PM 10.881 1.4 895.101 1:45:00 AM 7.654 0.804 311.181 1:45:00 PM 10.756 1.397 855.138 2:00:00 AM 7.411 0.728 269.439 2:00:00 PM 10.829 1.384 854.542 2:15:00 AM 7.268 0.738 265.822 2:15:00 PM 10.749 1.389 849.642 2:30:00 AM 7.186 0.754 267.496 2:30:00 PM 10.717 1.429 870.34 2:45:00 AM 7.109 0.637 222.554 2:45:00 PM 10.617 1.344 808.721 3:00:00 AM 6.952 0.663 224.51 3:00:00 PM 10.817 1.484 915.391 3:15:00 AM 6.867 0.665 221.508 3:15:00 PM 10.92 1.476 921.319 3:30:00 AM 6.774 0.59 192.874 3:30:00 PM 10.835 1.411 871.685 3:45:00 AM 6.819 0.61 201.16 3:45:00 PM 10.634 1.27 765.925 4:00:00 AM 6.863 0.544 181.182 4:00:00 PM 10.658 1.375 831.92 4:15:00 AM 6.796 0.642 210.752 4:15:00 PM 10.734 1.394 851.254 4:30:00 AM 6.75 0.645 209.737 4:30:00 PM 10.733 1.294 789.608 4:45:00 AM 6.763 0.635 207.075 4:45:00 PM 10.7 1.377 837.047 5:00:00 AM 6.943 0.668 225.778 5:00:00 PM 10.69 1.396 847.68 5:15:00 AM 7.053 0.686 237.071 5:15:00 PM 10.886 1.334 829.641 5:30:00 AM 7.18 0.682 241.826 5:30:00 PM 11.034 1.313 830.859 5:45:00 AM 7.407 0.731 270.309 5:45:00 PM 11.143 1.32 845.926 6:00:00 AM 7.623 0.843 324.486 6:00:00 PM 11.168 1.395 896.626 6:15:00 AM 7.956 0.846 345.437 6:15:00 PM 11.248 1.546 1002.92 6:30:00 AM 8.599 1.086 492.968 6:30:00 PM 11.422 1.461 966.545 6:45:00 AM 8.695 0.957 441.147 6:45:00 PM 11.532 1.456 975.425 7:00:00 AM 8.863 1.003 474.487 7:00:00 PM 11.639 1.517 1028.27 7:15:00 AM 9.281 1.061 534.09 7:15:00 PM 11.765 1.556 1069.52 7:30:00 AM 9.513 1.177 612.489 7:30:00 PM 11.848 1.604 1112.88 7:45:00 AM 9.709 1.097 586.739 7:45:00 PM 12.026 1.524 1077.56 8:00:00 AM 9.951 1.263 697.799 8:00:00 PM 12.007 1.522 1074.02 8:15:00 AM 10.078 1.344 755.241 8:15:00 PM 12.045 1.517 1074.93 8:30:00 AM 11.244 1.442 935.265 8:30:00 PM 11.959 1.483 1041.17 8:45:00 AM 12.389 1.497 1098.9 8:45:00 PM 11.851 1.474 1023.09 9:00:00 AM 12.645 1.613 1215.03 9:00:00 PM 11.936 1.49 1043.1 9:15:00 AM 12.557 1.548 1156.03 9:15:00 PM 11.947 1.634 1145.44 9:30:00 AM 12.597 1.535 1151.03 9:30:00 PM 12.189 1.605 1154.36 9:45:00 AM 12.491 1.589 1178.71 9:45:00 PM 12.198 1.548 1114.48 10:00:00 AM 12.305 1.599 1163.97 10:00:00 PM 12.143 1.454 1041 10:15:00 AM 11.818 1.535 1061.39 10:15:00 PM 12.221 1.557 1123.67 10:30:00 AM 11.309 1.433 936.502 10:30:00 PM 12.147 1.564 1119.54 10:45:00 AM 11.215 1.356 876.246 10:45:00 PM 12.043 1.584 1121.99 11:00:00 AM 11.081 1.403 892.879 11:00:00 PM 11.774 1.598 1099.71 11:15:00 AM 10.925 1.385 865.378 11:15:00 PM 11.391 1.498 987.839 11:30:00 AM 10.726 1.445 881.459 11:30:00 PM 10.814 1.368 843.039 11:45:00 AM 10.777 1.366 837.986 11:45:00 PM 10.419 1.301 763.901 Inches Feet/Sec GPM
Daily Avg: 10.189 1.250 757.405
Daily Min: 6.75 0.544 181.182
Daily Max: 12.645 1.634 1215.03
Peak to Avg: 1.60
Monday - A.M. 7/17/2023 Monday - P.M. 7/17/2023
DRAFT
766
Project: City of Santa Paula - Sewer Flow Study
Location: 500 Acacia, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/18/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
767
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 500 Acacia
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 10.037 1.273 711.46 12:00:00 PM 10.741 1.32 806.237 12:15:00 AM 9.495 1.25 648.805 12:15:00 PM 10.812 1.377 848.811 12:30:00 AM 9.077 1.136 555.196 12:30:00 PM 10.792 1.388 853.498 12:45:00 AM 8.838 1.204 567.463 12:45:00 PM 10.687 1.274 773.569 1:00:00 AM 8.63 1.079 492.161 1:00:00 PM 10.674 1.335 808.747 1:15:00 AM 8.313 0.985 427.098 1:15:00 PM 10.615 1.221 734.753 1:30:00 AM 7.976 0.884 362.257 1:30:00 PM 10.517 1.28 760.523 1:45:00 AM 7.736 0.883 346.817 1:45:00 PM 10.555 1.255 749.558 2:00:00 AM 7.635 0.856 330.101 2:00:00 PM 10.464 1.378 813.555 2:15:00 AM 7.529 0.793 300.091 2:15:00 PM 10.272 1.335 769.268 2:30:00 AM 7.944 0.847 345.111 2:30:00 PM 10.301 1.309 756.996 2:45:00 AM 7.746 0.836 329.231 2:45:00 PM 10.185 1.319 751.376 3:00:00 AM 7.43 0.753 279.898 3:00:00 PM 10.115 1.282 724.001 3:15:00 AM 7.201 0.752 267.566 3:15:00 PM 10.045 1.285 718.67 3:30:00 AM 6.97 0.694 235.977 3:30:00 PM 10.143 1.291 731.394 3:45:00 AM 6.869 0.665 221.453 3:45:00 PM 10.397 1.35 790.23 4:00:00 AM 6.846 0.635 210.646 4:00:00 PM 10.513 1.358 806.605 4:15:00 AM 6.827 0.622 205.615 4:15:00 PM 10.957 1.409 883.513 4:30:00 AM 6.879 0.69 230.277 4:30:00 PM 11.027 1.309 827.461 4:45:00 AM 6.826 0.669 221.084 4:45:00 PM 10.88 1.358 843.678 5:00:00 AM 6.905 0.688 231.042 5:00:00 PM 10.959 1.264 792.541 5:15:00 AM 7.146 0.732 257.857 5:15:00 PM 10.724 1.39 847.52 5:30:00 AM 7.352 0.793 290.353 5:30:00 PM 10.836 1.318 814.844 5:45:00 AM 7.532 0.871 329.851 5:45:00 PM 11.071 1.423 904.539 6:00:00 AM 7.984 0.873 358.141 6:00:00 PM 11.153 1.337 858.115 6:15:00 AM 8.165 0.917 387.857 6:15:00 PM 11.182 1.365 879.131 6:30:00 AM 8.528 1.017 456.743 6:30:00 PM 11.074 1.437 913.819 6:45:00 AM 8.97 1.167 561.12 6:45:00 PM 11.229 1.546 1001.1 7:00:00 AM 9.124 1.276 627.523 7:00:00 PM 11.311 1.402 916.463 7:15:00 AM 9.366 1.134 577.919 7:15:00 PM 11.29 1.43 932.471 7:30:00 AM 9.811 1.181 640.057 7:30:00 PM 11.507 1.428 953.963 7:45:00 AM 10.303 1.302 753.259 7:45:00 PM 11.586 1.545 1041.17 8:00:00 AM 10.531 1.407 837.827 8:00:00 PM 11.547 1.385 929.471 8:15:00 AM 10.789 1.374 844.462 8:15:00 PM 11.532 1.377 922.243 8:30:00 AM 10.563 1.368 818.008 8:30:00 PM 11.594 1.471 992.177 8:45:00 AM 10.663 1.358 822.022 8:45:00 PM 11.499 1.5 1001.37 9:00:00 AM 10.792 1.357 834.17 9:00:00 PM 11.541 1.522 1020.75 9:15:00 AM 10.8 1.456 896.2 9:15:00 PM 11.685 1.517 1033.55 9:30:00 AM 10.679 1.409 854.685 9:30:00 PM 11.83 1.499 1037.6 9:45:00 AM 10.732 1.303 795.104 9:45:00 PM 12.117 1.539 1098.19 10:00:00 AM 10.673 1.417 858.357 10:00:00 PM 12.083 1.598 1136.41 10:15:00 AM 10.714 1.35 822.203 10:15:00 PM 12.09 1.55 1103.22 10:30:00 AM 10.561 1.331 795.27 10:30:00 PM 12.03 1.51 1067.98 10:45:00 AM 10.356 1.263 735.384 10:45:00 PM 11.713 1.546 1056.88 11:00:00 AM 10.518 1.349 801.797 11:00:00 PM 11.493 1.532 1022.35 11:15:00 AM 10.677 1.314 796.336 11:15:00 PM 11.062 1.418 900.547 11:30:00 AM 10.767 1.386 849.816 11:30:00 PM 10.708 1.395 848.687 11:45:00 AM 10.71 1.367 831.931 11:45:00 PM 10.178 1.306 743.522 Inches Feet/Sec GPM
Daily Avg: 9.977 1.231 713.318
Daily Min: 6.826 0.622 205.615
Daily Max: 12.117 1.598 1136.41
Peak to Avg: 1.59
Tuesday- A.M. 7/18/2023 Tuesday- P.M. 7/18/2023
DRAFT
768
Project: City of Santa Paula - Sewer Flow Study
Location: 500 Acacia, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/19/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
769
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 500 Acacia
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 9.944 1.322 729.971 12:00:00 PM 10.346 1.381 803.319 12:15:00 AM 9.614 1.31 691.362 12:15:00 PM 10.349 1.477 859.462 12:30:00 AM 9.313 1.155 584.016 12:30:00 PM 10.579 1.433 858.273 12:45:00 AM 8.897 1.141 542.538 12:45:00 PM 10.569 1.452 868.304 1:00:00 AM 8.465 1.035 460.082 1:00:00 PM 10.488 1.441 853.609 1:15:00 AM 8.088 0.959 400.412 1:15:00 PM 10.355 1.364 794.528 1:30:00 AM 7.813 0.894 356.295 1:30:00 PM 10.37 1.424 831.041 1:45:00 AM 7.692 0.828 322.7 1:45:00 PM 10.321 1.394 808.086 2:00:00 AM 7.594 0.796 305.069 2:00:00 PM 10.423 1.297 761.861 2:15:00 AM 7.435 0.807 300 2:15:00 PM 10.323 1.416 821.307 2:30:00 AM 7.326 0.815 297.072 2:30:00 PM 10.371 1.383 806.834 2:45:00 AM 7.164 0.756 267.184 2:45:00 PM 10.245 1.297 745.015 3:00:00 AM 7.079 0.661 229.584 3:00:00 PM 10.355 1.367 796.271 3:15:00 AM 7.053 0.632 218.567 3:15:00 PM 10.374 1.353 789.586 3:30:00 AM 7.093 0.597 207.994 3:30:00 PM 10.327 1.428 828.535 3:45:00 AM 7.014 0.65 223.136 3:45:00 PM 10.449 1.471 867.165 4:00:00 AM 7.382 0.691 254.432 4:00:00 PM 10.506 1.372 814.146 4:15:00 AM 7.525 0.66 249.517 4:15:00 PM 10.668 1.43 866.015 4:30:00 AM 6.806 0.649 213.508 4:30:00 PM 11.044 1.416 896.941 4:45:00 AM 6.797 0.685 224.995 4:45:00 PM 11.025 1.408 889.796 5:00:00 AM 6.869 0.674 224.708 5:00:00 PM 10.642 1.433 865.266 5:15:00 AM 7.12 0.76 266.213 5:15:00 PM 10.709 1.324 805.726 5:30:00 AM 7.364 0.829 304.462 5:30:00 PM 10.794 1.433 881.053 5:45:00 AM 7.412 0.845 313.137 5:45:00 PM 10.895 1.48 921.34 6:00:00 AM 7.738 0.837 329.117 6:00:00 PM 10.848 1.419 878.622 6:15:00 AM 8.126 0.998 419.711 6:15:00 PM 10.961 1.527 958.169 6:30:00 AM 8.343 0.99 431.436 6:30:00 PM 11.015 1.499 946.294 6:45:00 AM 8.582 1.077 487.643 6:45:00 PM 11.103 1.495 953.694 7:00:00 AM 8.812 1.165 546.99 7:00:00 PM 11.19 1.573 1014.12 7:15:00 AM 9.054 1.021 496.862 7:15:00 PM 11.125 1.498 958.122 7:30:00 AM 9.594 1.269 667.707 7:30:00 PM 11.13 1.452 928.931 7:45:00 AM 10.149 1.3 737.075 7:45:00 PM 11.194 1.444 930.903 8:00:00 AM 11.615 1.586 1072.86 8:00:00 PM 11.231 1.522 985.587 8:15:00 AM 12.241 1.667 1205.52 8:15:00 PM 11.406 1.494 986.764 8:30:00 AM 12.294 1.706 1239.99 8:30:00 PM 11.622 1.624 1098.97 8:45:00 AM 12.455 1.68 1241.96 8:45:00 PM 11.666 1.57 1067.49 9:00:00 AM 12.453 1.733 1280.62 9:00:00 PM 11.692 1.552 1058.17 9:15:00 AM 12.364 1.593 1166.37 9:15:00 PM 11.765 1.434 986.048 9:30:00 AM 11.985 1.545 1087.8 9:30:00 PM 11.761 1.345 924.296 9:45:00 AM 11.067 1.471 934.395 9:45:00 PM 11.745 1.561 1070.47 10:00:00 AM 10.567 1.346 805.178 10:00:00 PM 11.855 1.513 1050.62 10:15:00 AM 10.421 1.193 700.725 10:15:00 PM 12.12 1.597 1140.02 10:30:00 AM 10.367 1.282 747.757 10:30:00 PM 12.056 1.578 1119.2 10:45:00 AM 10.358 1.374 800.559 10:45:00 PM 11.783 1.579 1087.85 11:00:00 AM 10.487 1.343 795.161 11:00:00 PM 11.697 1.548 1056.44 11:15:00 AM 10.39 1.426 834.036 11:15:00 PM 11.423 1.55 1026.15 11:30:00 AM 10.353 1.369 797.143 11:30:00 PM 10.907 1.447 901.772 11:45:00 AM 10.289 1.348 778.242 11:45:00 PM 10.293 1.404 811.044 Inches Feet/Sec GPM
Daily Avg: 10.012 1.274 747.738
Daily Min: 6.797 0.597 207.994
Daily Max: 12.455 1.733 1280.62
Peak to Avg: 1.71
Wednesday - A.M. 7/19/2023 Wednesday - P.M. 7/19/2023
DRAFT
770
Project: City of Santa Paula - Sewer Flow Study
Location: 500 Acacia, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/20/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
771
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 500 Acacia
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 9.919 1.337 735.392 12:00:00 PM 10.603 1.346 808.712 12:15:00 AM 9.475 1.245 644.558 12:15:00 PM 10.637 1.385 835.68 12:30:00 AM 9.196 1.181 587.263 12:30:00 PM 10.575 1.269 759.872 12:45:00 AM 8.753 1.086 505.275 12:45:00 PM 10.645 1.386 836.873 1:00:00 AM 8.276 0.956 412.061 1:00:00 PM 10.675 1.418 859.539 1:15:00 AM 8.067 0.976 406.289 1:15:00 PM 10.669 1.438 870.816 1:30:00 AM 7.889 0.875 353.279 1:30:00 PM 10.61 1.247 749.947 1:45:00 AM 7.642 0.858 331.628 1:45:00 PM 10.386 1.378 805.594 2:00:00 AM 7.485 0.825 309.719 2:00:00 PM 10.451 1.285 757.354 2:15:00 AM 7.28 0.748 270.304 2:15:00 PM 10.33 1.396 810.291 2:30:00 AM 7.071 0.704 244.115 2:30:00 PM 10.351 1.358 790.745 2:45:00 AM 6.952 0.658 223.069 2:45:00 PM 10.89 1.388 863.379 3:00:00 AM 6.869 0.574 191.425 3:00:00 PM 10.804 1.369 842.973 3:15:00 AM 6.725 0.748 241.846 3:15:00 PM 10.464 1.332 786.31 3:30:00 AM 6.688 0.581 186.522 3:30:00 PM 10.212 1.337 764.513 3:45:00 AM 6.701 0.61 196.363 3:45:00 PM 10.272 1.368 788.451 4:00:00 AM 6.755 0.616 200.594 4:00:00 PM 10.253 1.276 733.323 4:15:00 AM 6.631 0.636 201.742 4:15:00 PM 10.402 1.369 802.076 4:30:00 AM 6.595 0.596 187.633 4:30:00 PM 10.527 1.337 795.731 4:45:00 AM 6.707 0.705 227.39 4:45:00 PM 10.479 1.333 788.818 5:00:00 AM 6.845 0.638 211.604 5:00:00 PM 10.653 1.391 840.573 5:15:00 AM 6.909 0.728 244.727 5:15:00 PM 10.728 1.31 799.241 5:30:00 AM 6.975 0.67 227.912 5:30:00 PM 10.862 1.384 858.289 5:45:00 AM 7.265 0.691 248.891 5:45:00 PM 11.103 1.467 935.606 6:00:00 AM 7.548 0.798 302.989 6:00:00 PM 11.067 1.426 905.913 6:15:00 AM 8.05 0.89 369.47 6:15:00 PM 11.062 1.398 887.669 6:30:00 AM 8.408 0.986 434.151 6:30:00 PM 11.06 1.387 880.541 6:45:00 AM 8.757 1.159 539.248 6:45:00 PM 11.061 1.388 880.973 7:00:00 AM 9.098 1.207 591.362 7:00:00 PM 11.06 1.423 903.555 7:15:00 AM 9.771 1.276 688.16 7:15:00 PM 11.096 1.474 939.497 7:30:00 AM 9.768 1.279 689.266 7:30:00 PM 11.051 1.489 944.137 7:45:00 AM 9.908 1.348 740.731 7:45:00 PM 11.337 1.541 1010.32 8:00:00 AM 10.001 1.29 717.576 8:00:00 PM 11.76 1.395 958.839 8:15:00 AM 10.185 1.288 733.74 8:15:00 PM 11.673 1.431 973.913 8:30:00 AM 10.398 1.115 653.046 8:30:00 PM 11.488 1.437 958.209 8:45:00 AM 10.391 1.207 706.354 8:45:00 PM 11.47 1.527 1015.92 9:00:00 AM 10.515 1.332 791.453 9:00:00 PM 11.566 1.555 1045.92 9:15:00 AM 10.411 1.356 795.135 9:15:00 PM 11.617 1.603 1084.04 9:30:00 AM 10.445 1.313 773.184 9:30:00 PM 11.739 1.538 1054.47 9:45:00 AM 10.5 1.402 831.653 9:45:00 PM 11.955 1.605 1126.2 10:00:00 AM 10.362 1.433 835.239 10:00:00 PM 12.167 1.648 1182.56 10:15:00 AM 10.548 1.297 774.139 10:15:00 PM 11.928 1.624 1136.42 10:30:00 AM 10.542 1.306 778.369 10:30:00 PM 11.833 1.516 1049.77 10:45:00 AM 10.491 1.224 725.341 10:45:00 PM 11.81 1.451 1002.58 11:00:00 AM 10.516 1.343 798.065 11:00:00 PM 11.713 1.486 1015.95 11:15:00 AM 10.443 1.299 765.199 11:15:00 PM 11.23 1.546 1001.01 11:30:00 AM 10.591 1.396 837.127 11:30:00 PM 10.787 1.423 874.228 11:45:00 AM 10.686 1.384 839.821 11:45:00 PM 10.253 1.229 706.22 Inches Feet/Sec GPM
Daily Avg: 9.851 1.220 701.532
Daily Min: 6.595 0.574 186.522
Daily Max: 12.167 1.648 1182.56
Peak to Avg: 1.69
Thursday - A.M. 7/20/2023 Thursday - P.M. 7/20/2023
DRAFT
772
Project: City of Santa Paula - Sewer Flow Study
Location: 500 Acacia, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/21/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
773
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 500 Acacia
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 9.832 1.187 645.357 12:00:00 PM 10.796 1.504 924.843 12:15:00 AM 9.603 1.272 670.266 12:15:00 PM 11.029 1.458 922.44 12:30:00 AM 9.317 1.224 619.334 12:30:00 PM 10.862 1.392 862.825 12:45:00 AM 8.906 1.134 539.809 12:45:00 PM 11.25 1.487 964.733 1:00:00 AM 8.537 1.123 504.798 1:00:00 PM 10.932 1.386 866.52 1:15:00 AM 8.246 1.036 444.099 1:15:00 PM 10.875 1.415 878.709 1:30:00 AM 8.081 1.01 421.145 1:30:00 PM 10.657 1.444 873.208 1:45:00 AM 7.835 0.872 348.5 1:45:00 PM 10.653 1.382 835.259 2:00:00 AM 7.663 0.893 346.382 2:00:00 PM 10.888 1.441 895.912 2:15:00 AM 7.471 0.858 321.473 2:15:00 PM 10.547 1.402 836.408 2:30:00 AM 7.332 0.757 276.181 2:30:00 PM 10.718 1.386 844.8 2:45:00 AM 7.107 0.764 266.816 2:45:00 PM 10.906 1.43 891.107 3:00:00 AM 7.094 0.694 241.82 3:00:00 PM 10.682 1.373 833.11 3:15:00 AM 7.077 0.707 245.701 3:15:00 PM 10.657 1.392 841.913 3:30:00 AM 6.885 0.703 234.889 3:30:00 PM 12.607 1.459 1094.69 3:45:00 AM 6.792 0.67 219.855 3:45:00 PM 12.847 1.668 1281.36 4:00:00 AM 6.923 0.69 232.527 4:00:00 PM 12.747 1.479 1124.92 4:15:00 AM 6.988 0.714 243.652 4:15:00 PM 12.729 1.628 1236.81 4:30:00 AM 6.905 0.795 266.891 4:30:00 PM 12.652 1.547 1166.33 4:45:00 AM 6.866 0.656 218.606 4:45:00 PM 12.418 1.64 1207.29 5:00:00 AM 6.967 0.706 240.045 5:00:00 PM 12.151 1.623 1162.7 5:15:00 AM 7.042 0.796 274.654 5:15:00 PM 11.861 1.564 1086.63 5:30:00 AM 7.329 0.822 299.859 5:30:00 PM 11.351 1.553 1019.78 5:45:00 AM 7.548 0.799 303.541 5:45:00 PM 11.099 1.387 884.428 6:00:00 AM 8.51 0.977 437.347 6:00:00 PM 10.909 1.432 892.682 6:15:00 AM 8.753 1.097 510.035 6:15:00 PM 10.804 1.368 842.296 6:30:00 AM 8.626 1.076 490.73 6:30:00 PM 10.962 1.412 885.802 6:45:00 AM 8.642 1.033 472.083 6:45:00 PM 11.025 1.521 961.485 7:00:00 AM 8.947 1.194 572.06 7:00:00 PM 10.992 1.405 884.691 7:15:00 AM 9.188 1.269 630.338 7:15:00 PM 11.098 1.452 925.947 7:30:00 AM 9.446 1.267 652.878 7:30:00 PM 11.017 1.445 912.894 7:45:00 AM 9.545 1.19 622.149 7:45:00 PM 10.839 1.301 804.514 8:00:00 AM 9.958 1.234 682.476 8:00:00 PM 10.757 1.425 872.24 8:15:00 AM 10.367 1.232 718.756 8:15:00 PM 11.039 1.479 936.333 8:30:00 AM 10.299 1.298 750.568 8:30:00 PM 11.029 1.477 934.126 8:45:00 AM 10.283 1.422 820.46 8:45:00 PM 11.047 1.486 941.674 9:00:00 AM 10.535 1.422 847.282 9:00:00 PM 10.958 1.493 936.438 9:15:00 AM 10.661 1.406 850.631 9:15:00 PM 10.93 1.453 908.427 9:30:00 AM 10.785 1.364 837.578 9:30:00 PM 11.119 1.448 925.418 9:45:00 AM 10.67 1.317 797.991 9:45:00 PM 11.193 1.444 930.694 10:00:00 AM 10.755 1.374 840.685 10:00:00 PM 11.698 1.554 1060.31 10:15:00 AM 10.696 1.286 781.631 10:15:00 PM 11.789 1.471 1013.78 10:30:00 AM 10.481 1.411 834.799 10:30:00 PM 11.391 1.404 925.616 10:45:00 AM 10.389 1.368 800.132 10:45:00 PM 11.158 1.448 929.657 11:00:00 AM 10.645 1.414 853.929 11:00:00 PM 10.949 1.442 903.379 11:15:00 AM 10.876 1.399 868.751 11:15:00 PM 10.744 1.343 820.917 11:30:00 AM 10.834 1.454 898.454 11:30:00 PM 10.567 1.325 792.151 11:45:00 AM 10.985 1.415 890.368 11:45:00 PM 10.342 1.357 789.027 Inches Feet/Sec GPM
Daily Avg: 10.039 1.268 742.212
Daily Min: 6.792 0.656 218.606
Daily Max: 12.847 1.668 1281.36
Peak to Avg: 1.73
Friday - A.M. 7/21/2023 Friday - P.M. 7/21/2023
DRAFT
774
Project: City of Santa Paula - Sewer Flow Study
Location: 500 Acacia, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/22/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
775
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 500 Acacia
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 9.965 1.325 733.672 12:00:00 PM 12.058 1.462 1037.15 12:15:00 AM 9.684 1.187 632.678 12:15:00 PM 12.033 1.524 1077.92 12:30:00 AM 9.247 1.155 578.363 12:30:00 PM 12.15 1.603 1148.01 12:45:00 AM 9.023 1.086 526.421 12:45:00 PM 12.367 1.552 1137.04 1:00:00 AM 8.691 1.077 496.191 1:00:00 PM 12.427 1.668 1229.58 1:15:00 AM 8.388 0.988 433.887 1:15:00 PM 12.27 1.555 1127.63 1:30:00 AM 8.209 0.9 383.796 1:30:00 PM 11.633 1.499 1015.67 1:45:00 AM 7.981 0.89 365.088 1:45:00 PM 11.779 1.52 1046.68 2:00:00 AM 7.839 0.816 326.353 2:00:00 PM 11.587 1.574 1061.08 2:15:00 AM 7.557 0.875 333.014 2:15:00 PM 11.521 1.581 1058.11 2:30:00 AM 7.453 0.754 281.504 2:30:00 PM 11.406 1.584 1046.22 2:45:00 AM 7.324 0.78 284.21 2:45:00 PM 11.256 1.521 987.487 3:00:00 AM 7.16 0.729 257.371 3:00:00 PM 11.204 1.381 891.218 3:15:00 AM 7.017 0.672 230.855 3:15:00 PM 11.178 1.48 952.465 3:30:00 AM 7.073 0.669 232.107 3:30:00 PM 10.978 1.422 893.762 3:45:00 AM 7.15 0.762 268.445 3:45:00 PM 10.774 1.527 936.955 4:00:00 AM 7.118 0.709 248.195 4:00:00 PM 11.078 1.482 942.935 4:15:00 AM 6.94 0.644 217.807 4:15:00 PM 11.168 1.573 1010.89 4:30:00 AM 6.907 0.747 250.899 4:30:00 PM 10.879 1.439 894.286 4:45:00 AM 6.852 0.662 219.961 4:45:00 PM 10.576 1.362 815.383 5:00:00 AM 6.971 0.6 204.143 5:00:00 PM 10.63 1.29 777.283 5:15:00 AM 6.997 0.729 249.099 5:15:00 PM 10.801 1.389 855.063 5:30:00 AM 7.157 0.746 263.237 5:30:00 PM 10.794 1.433 881.023 5:45:00 AM 7.264 0.676 243.525 5:45:00 PM 10.705 1.406 855.533 6:00:00 AM 7.281 0.73 263.902 6:00:00 PM 10.438 1.147 675.26 6:15:00 AM 7.686 0.903 351.477 6:15:00 PM 10.628 1.459 879.218 6:30:00 AM 7.923 0.948 384.916 6:30:00 PM 10.573 1.372 821.185 6:45:00 AM 7.872 0.93 374.236 6:45:00 PM 10.644 1.381 833.994 7:00:00 AM 8.081 0.973 405.993 7:00:00 PM 10.733 1.554 948.547 7:15:00 AM 8.402 0.896 394.358 7:15:00 PM 10.926 1.468 917.207 7:30:00 AM 8.756 1.05 488.732 7:30:00 PM 11.041 1.41 892.703 7:45:00 AM 8.896 1.072 509.644 7:45:00 PM 10.802 1.352 832.318 8:00:00 AM 9.401 1.145 586.427 8:00:00 PM 10.675 1.324 802.652 8:15:00 AM 9.649 1.178 624.579 8:15:00 PM 10.608 1.393 837.617 8:30:00 AM 9.849 1.3 708.533 8:30:00 PM 10.521 1.246 740.784 8:45:00 AM 10.338 1.453 844.429 8:45:00 PM 10.326 1.442 836.345 9:00:00 AM 10.702 1.277 776.303 9:00:00 PM 10.282 1.425 822.41 9:15:00 AM 10.867 1.379 855.533 9:15:00 PM 10.259 1.393 801.182 9:30:00 AM 11.077 1.37 871.666 9:30:00 PM 10.547 1.392 830.429 9:45:00 AM 11.217 1.432 926.059 9:45:00 PM 10.391 1.323 773.915 10:00:00 AM 11.597 1.461 985.627 10:00:00 PM 10.314 1.332 771.791 10:15:00 AM 12.098 1.504 1071.32 10:15:00 PM 10.336 1.377 799.976 10:30:00 AM 12.124 1.534 1095.99 10:30:00 PM 10.512 1.382 820.919 10:45:00 AM 11.848 1.441 999.727 10:45:00 PM 10.647 1.428 862.32 11:00:00 AM 11.831 1.526 1056.61 11:00:00 PM 10.334 1.378 800.212 11:15:00 AM 11.737 1.534 1051.6 11:15:00 PM 10.273 1.354 780.097 11:30:00 AM 11.901 1.55 1081.3 11:30:00 PM 10.141 1.33 753.297 11:45:00 AM 11.986 1.544 1086.76 11:45:00 PM 9.854 1.332 726.579 Inches Feet/Sec GPM
Daily Avg: 9.939 1.240 721.718
Daily Min: 6.852 0.6 204.143
Daily Max: 12.427 1.668 1229.58
Peak to Avg: 1.70
Saturday - A.M. 7/22/2023 Saturday - P.M. 7/22/2023
DRAFT
776
Project: City of Santa Paula - Sewer Flow Study
Location: 500 Acacia, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/23/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
777
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 500 Acacia
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 9.596 1.242 653.717 12:00:00 PM 12.187 1.633 1174.42 12:15:00 AM 9.226 1.12 559.117 12:15:00 PM 11.979 1.56 1097.19 12:30:00 AM 9.042 1.164 565.584 12:30:00 PM 11.841 1.524 1056.47 12:45:00 AM 8.957 1.168 560.554 12:45:00 PM 11.911 1.484 1036.06 1:00:00 AM 8.858 1.118 528.309 1:00:00 PM 11.811 1.467 1013.68 1:15:00 AM 8.778 1.04 485.82 1:15:00 PM 11.795 1.538 1060.61 1:30:00 AM 8.47 0.937 416.857 1:30:00 PM 11.693 1.545 1053.98 1:45:00 AM 8.169 0.947 401.033 1:45:00 PM 11.483 1.468 978.09 2:00:00 AM 7.993 0.909 373.357 2:00:00 PM 11.267 1.314 854.257 2:15:00 AM 7.822 0.841 335.317 2:15:00 PM 11.344 1.353 887.703 2:30:00 AM 7.616 0.866 333.127 2:30:00 PM 11.491 1.456 971.018 2:45:00 AM 7.464 0.717 267.953 2:45:00 PM 11.283 1.429 931.17 3:00:00 AM 7.407 0.71 262.718 3:00:00 PM 10.859 1.393 863.285 3:15:00 AM 7.305 0.706 256.158 3:15:00 PM 10.813 1.471 906.404 3:30:00 AM 7.32 0.706 256.919 3:30:00 PM 10.861 1.423 882.245 3:45:00 AM 7.212 0.767 273.498 3:45:00 PM 10.768 1.409 863.703 4:00:00 AM 7.116 0.734 256.751 4:00:00 PM 10.721 1.346 820.341 4:15:00 AM 7.139 0.638 224.325 4:15:00 PM 10.907 1.443 899.417 4:30:00 AM 7.251 0.626 224.942 4:30:00 PM 10.972 1.581 993.315 4:45:00 AM 7.322 0.686 249.807 4:45:00 PM 10.822 1.479 912.873 5:00:00 AM 7.325 0.707 257.57 5:00:00 PM 10.887 1.469 913.382 5:15:00 AM 7.305 0.69 250.272 5:15:00 PM 10.778 1.45 889.797 5:30:00 AM 6.788 0.621 203.463 5:30:00 PM 10.847 1.379 853.589 5:45:00 AM 6.796 0.66 216.861 5:45:00 PM 10.719 1.398 851.636 6:00:00 AM 6.813 0.638 210.347 6:00:00 PM 10.683 1.399 848.708 6:15:00 AM 7.04 0.714 246.075 6:15:00 PM 10.778 1.424 874.141 6:30:00 AM 7.063 0.701 242.77 6:30:00 PM 10.737 1.436 877.107 6:45:00 AM 6.994 0.696 237.689 6:45:00 PM 10.526 1.425 847.696 7:00:00 AM 7.305 0.801 290.737 7:00:00 PM 10.635 1.388 836.997 7:15:00 AM 7.635 0.794 306.45 7:15:00 PM 10.633 1.427 860.427 7:30:00 AM 8.951 1.102 528.417 7:30:00 PM 10.675 1.292 783.213 7:45:00 AM 10.655 1.331 804.697 7:45:00 PM 10.919 1.357 847.435 8:00:00 AM 11.236 1.526 989.067 8:00:00 PM 11.203 1.506 972.315 8:15:00 AM 11.279 1.525 993.044 8:15:00 PM 11.177 1.431 920.791 8:30:00 AM 11.489 1.476 984.501 8:30:00 PM 11.184 1.511 973.332 8:45:00 AM 11.759 1.513 1039.5 8:45:00 PM 11.158 1.399 898.088 9:00:00 AM 12.125 1.458 1041.25 9:00:00 PM 11.264 1.395 906.547 9:15:00 AM 12.549 1.536 1145.71 9:15:00 PM 11.316 1.446 945.336 9:30:00 AM 13.017 1.622 1266.9 9:30:00 PM 11.422 1.457 964.475 9:45:00 AM 13.419 1.665 1350.58 9:45:00 PM 11.66 1.514 1028.7 10:00:00 AM 13.729 1.733 1445.22 10:00:00 PM 11.762 1.48 1016.85 10:15:00 AM 13.802 1.759 1476.69 10:15:00 PM 11.607 1.582 1068.58 10:30:00 AM 13.636 1.706 1411.27 10:30:00 PM 11.663 1.454 988.41 10:45:00 AM 13.691 1.767 1468.73 10:45:00 PM 11.506 1.542 1029.91 11:00:00 AM 13.532 1.666 1365.34 11:00:00 PM 11.164 1.481 951.882 11:15:00 AM 12.736 1.64 1246.45 11:15:00 PM 10.835 1.487 919.076 11:30:00 AM 12.484 1.642 1217.47 11:30:00 PM 10.542 1.443 860.29 11:45:00 AM 12.445 1.507 1112.75 11:45:00 PM 10.2 1.404 801.557 Inches Feet/Sec GPM
Daily Avg: 10.309 1.277 789.142
Daily Min: 6.788 0.621 203.463
Daily Max: 13.802 1.767 1476.69
Peak to Avg: 1.87
Sunday - A.M. 7/23/2023 Sunday - P.M. 7/23/2023
DRAFT
778
Project: City of Santa Paula - Sewer Flow Study
Location: 500 Acacia, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure TransducerTime Period: 7/24/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
779
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 500 Acacia
Time Level Velocity Velocity Time Level Velocity Flow
12:10:00 AM 9.859 1.283 700.097 12:00:00 PM 10.854 1.399 866.842 12:15:00 AM 9.503 1.254 651.536 12:15:00 PM 10.985 1.487 935.426 12:30:00 AM 9.049 1.16 564.577 12:30:00 PM 11.022 1.318 832.951 12:45:00 AM 8.776 1.11 518.026 12:45:00 PM 11.063 1.354 859.649 1:00:00 AM 8.477 1.042 464.145 1:00:00 PM 10.985 1.484 933.881 1:15:00 AM 8.102 0.818 342.601 1:15:00 PM 10.854 1.394 863.601 1:30:00 AM 7.886 0.864 348.541 1:30:00 PM 10.857 1.378 853.885 1:45:00 AM 7.658 0.99 383.465 1:45:00 PM 10.825 1.462 902.505 2:00:00 AM 7.474 0.831 311.278 2:00:00 PM 10.811 1.258 775.143 2:15:00 AM 7.286 0.704 254.769 2:15:00 PM 10.636 1.364 822.542 2:30:00 AM 7.18 0.719 254.996 2:30:00 PM 10.695 1.351 820.683 2:45:00 AM 7.078 0.673 233.731 2:45:00 PM 10.696 1.322 803.417 3:00:00 AM 6.908 0.637 214.082 3:00:00 PM 10.783 1.349 828.78 3:15:00 AM 6.844 0.661 219.194 3:15:00 PM 10.75 1.381 844.945 3:30:00 AM 6.831 0.724 239.375 3:30:00 PM 10.548 1.385 826.564 3:45:00 AM 6.796 0.731 240.017 3:45:00 PM 10.523 1.452 863.456 4:00:00 AM 6.855 0.661 219.765 4:00:00 PM 10.606 1.415 850.651 4:15:00 AM 6.887 0.629 210.293 4:15:00 PM 10.586 1.405 842.338 4:30:00 AM 6.917 0.725 243.967 4:30:00 PM 10.576 1.391 832.879 4:45:00 AM 6.811 0.75 246.928 4:45:00 PM 10.633 1.412 851.539 5:00:00 AM 6.909 0.698 234.589 5:00:00 PM 10.679 1.498 908.46 5:15:00 AM 7.094 0.807 281.142 5:15:00 PM 10.774 1.496 917.924 5:30:00 AM 7.178 0.834 295.439 5:30:00 PM 10.843 1.365 844.376 5:45:00 AM 7.389 0.75 276.598 5:45:00 PM 10.975 1.419 891.802 6:00:00 AM 7.648 0.893 345.481 6:00:00 PM 10.995 1.358 855.188 6:15:00 AM 8.011 0.987 406.988 6:15:00 PM 11.047 1.45 918.725 6:30:00 AM 8.439 1.002 443.333 6:30:00 PM 11.557 1.451 975.031 6:45:00 AM 8.694 1.021 470.657 6:45:00 PM 11.57 1.52 1022.66 7:00:00 AM 8.876 1.123 532.34 7:00:00 PM 11.331 1.427 934.677 7:15:00 AM 9.132 1.06 521.917 7:15:00 PM 11.092 1.421 905.102 7:30:00 AM 9.373 1.262 643.942 7:30:00 PM 11.194 1.454 937.705 7:45:00 AM 9.588 1.109 582.908 7:45:00 PM 11.42 1.502 993.576 8:00:00 AM 10.063 1.253 702.524 8:00:00 PM 11.324 1.516 992.213 8:15:00 AM 10.308 1.262 730.3 8:15:00 PM 11.426 1.597 1057.47 8:30:00 AM 10.32 1.406 814.941 8:30:00 PM 11.642 1.482 1005.19 8:45:00 AM 10.45 1.367 806.004 8:45:00 PM 11.76 1.523 1046.05 9:00:00 AM 10.617 1.378 829.037 9:00:00 PM 11.735 1.607 1100.82 9:15:00 AM 10.593 1.48 888.299 9:15:00 PM 11.754 1.521 1044.13 9:30:00 AM 10.574 1.28 766.164 9:30:00 PM 11.897 1.568 1093.49 9:45:00 AM 10.535 1.443 859.593 9:45:00 PM 12.075 1.593 1132.29 10:00:00 AM 10.609 1.462 879.026 10:00:00 PM 12.212 1.475 1063.54 10:15:00 AM 10.694 1.374 834.504 10:15:00 PM 12.525 1.768 1315.86 10:30:00 AM 10.576 1.407 842.51 10:30:00 PM 12.297 1.559 1133.94 10:45:00 AM 10.751 1.392 851.57 10:45:00 PM 11.904 1.6 1116.89 11:00:00 AM 10.918 1.5 936.492 11:00:00 PM 11.552 1.435 963.66 11:15:00 AM 10.97 1.479 928.597 11:15:00 PM 11.113 1.516 968.06 11:30:00 AM 10.957 1.356 850.217 11:30:00 PM 10.776 1.438 882.442 11:45:00 AM 10.903 1.38 859.509 11:45:00 PM 10.473 1.318 779.079 Inches Feet/Sec GPM
Daily Avg: 9.965 1.254 730.399
Daily Min: 6.796 0.629 210.293
Daily Max: 12.525 1.768 1315.86
Peak to Avg: 1.80
Monday - A.M. 7/24/2023 Monday - P.M. 7/24/2023
DRAFT
780
Sewer Line Flow Study Summary
Maximum Level Maximum Velocity Maximum Flow Rate
Average:

Maximum:

Minimum:

1.216

1.768

0.454
Velocity - Feet per Second
Average:

Maximum:

Minimum:

Max d/D:

10.108

13.802

6.595

57.5%
Level - Inches
Average:

Maximum::

Minimum:

Peak to Average
721.560
1476.69
181.182

1.70 Flow Rate - Gallons Per Minute
Project: City of Santa Paula - Sewer Flow Study
Location: 500 Acacia, Santa Paula, CA
Pipe Size: 24” VCP
Time Period: 7/11/2023, 12:00 a.m. - 7/25/2023, 12:00 a.m.

DRAFT
781
1868 Palma Drive, Suite I, Ventura, CA 93003 www.goldcoastenv.com 805.498.3811 ph.

Manhole - Layout

CITY OF SANTA PAULA - SEWER FLOW STUDY
MH Location: 416 Dartmouth
Santa Paula, CA 93060

Pipe Size: 24” VCP
Time Period: 7/11/2023 - 12:00 a.m. to
7/25/2023- 12:00 a.m.

GPS: 34.348436, -119.065191
Equipment
N
 This line has very low velocity possibly from a silt damn downstream.
 The line was cleaned prior to installation of the meter, but after 2.5 weeks of being installed silt was back inside of the channel and on our meter.

Manhole
E
Gold G C Coast Environmental
E Specializing in process instrumentation and calibration.

G C
Teledyne Isco 2150 Area Velocity Flow Meter with 10’
measuring range:

1.5 to +1.5 m/s)
 ±2% of reading from 5 to 20 ft/s (1.5 to 6.1 m/s)
Method Of Insertion:
 24 inch line requires Confined Space Entry.

Flow
DRAFT
782
Project: City of Santa Paula - Sewer Flow Study
Location: 416 Dartmouth, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/11/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
783
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 416 Dartmouth
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 PM 11.576 0.209 140.784
12:15:00 AM 11.017 0.318 200.433 12:15:00 PM 11.83 0.42 290.607 12:30:00 AM 10.958 0.357 223.716 12:30:00 PM 11.963 0.359 252.193 12:45:00 AM 10.927 0.314 193.478 12:45:00 PM 11.89 0.37 256.607 1:00:00 AM 10.571 0.28 166.451 1:00:00 PM 11.741 0.391 268.031 1:15:00 AM 10.512 0.287 170.195 1:15:00 PM 11.634 0.397 268.81 1:30:00 AM 10.432 0.274 168.604 1:30:00 PM 11.622 0.302 202.689 1:45:00 AM 10.322 0.281 163.223 1:45:00 PM 11.672 0.365 248.212 2:00:00 AM 10.195 0.218 124.25 2:00:00 PM 11.595 0.282 246.125 2:15:00 AM 10.161 0.263 149.269 2:15:00 PM 11.482 0 198.274 2:30:00 AM 10.167 0.271 153.624 2:30:00 PM 11.441 0.031 194.771 2:45:00 AM 10.098 0.274 153.895 2:45:00 PM 11.529 0 196.523 3:00:00 AM 10.001 0.243 135.105 3:00:00 PM 11.569 0 198.274 3:15:00 AM 9.898 0.261 142.867 3:15:00 PM 11.521 0 203.529 3:30:00 AM 9.861 0.223 121.497 3:30:00 PM 11.475 0.308 205.253 3:45:00 AM 9.842 0.245 133.382 3:45:00 PM 11.635 0.424 287.071 4:00:00 AM 9.789 0 132.427 4:00:00 PM 11.627 0.393 265.893 4:15:00 AM 9.793 0 132.507 4:15:00 PM 11.514 0.385 257.25 4:30:00 AM 9.799 0.246 132.607 4:30:00 PM 11.56 0.414 278.09 4:45:00 AM 9.746 0.206 110.827 4:45:00 PM 11.451 0.369 243.924 5:00:00 AM 9.899 0.282 154.428 5:00:00 PM 11.666 0.42 281.918 5:15:00 AM 9.878 0.268 146.42 5:15:00 PM 11.655 0.419 284.556 5:30:00 AM 9.971 0.323 175.278 5:30:00 PM 11.57 0.402 268.527 5:45:00 AM 10.223 0.257 147.169 5:45:00 PM 11.493 0.418 278.826 6:00:00 AM 10.26 0.289 166.153 6:00:00 PM 11.686 0.391 266.344 6:15:00 AM 10.404 0.606 353.445 6:15:00 PM 11.674 0.385 261.936 6:30:00 AM 10.382 0.272 170.809 6:30:00 PM 11.661 0.398 268.095 6:45:00 AM 10.521 0.32 190.087 6:45:00 PM 11.635 0.378 264.961 7:00:00 AM 10.543 0.302 179.909 7:00:00 PM 11.893 0 258.402 7:15:00 AM 10.703 0.29 176.613 7:15:00 PM 12.12 0.413 295.038 7:30:00 AM 10.804 0.352 216.636 7:30:00 PM 11.928 0.431 301.196 7:45:00 AM 11.028 0.34 214.783 7:45:00 PM 11.981 0.618 435.178 8:00:00 AM 11.138 0.319 203.534 8:00:00 PM 11.949 0.477 334.175 8:15:00 AM 11.202 0.373 239.186 8:15:00 PM 11.982 0.423 296.382 8:30:00 AM 11.362 0.356 231.142 8:30:00 PM 11.834 0.454 308.777 8:45:00 AM 11.48 0.039 229.594 8:45:00 PM 11.851 0.384 263.941 9:00:00 AM 11.415 0 231.554 9:00:00 PM 11.871 0.48 332.156 9:15:00 AM 11.456 0 229.802 9:15:00 PM 12.226 0 308.051 9:30:00 AM 11.461 0.381 252.104 9:30:00 PM 12.223 0 307.959 9:45:00 AM 11.503 0.385 257.038 9:45:00 PM 12.004 0.539 377.824 10:00:00 AM 11.54 0.294 221.091 10:00:00 PM 11.977 0.377 265.152 10:15:00 AM 11.59 0.345 232.273 10:15:00 PM 12.089 0.342 243.573 10:30:00 AM 11.524 0 230.99 10:30:00 PM 12.08 0.45 319.624 10:45:00 AM 11.726 0.405 275.272 10:45:00 PM 12.019 0.361 255.188 11:00:00 AM 11.736 0.407 276.721 11:00:00 PM 11.917 0.366 255.055 11:15:00 AM 11.664 0.341 256.905 11:15:00 PM 11.83 0.397 269.469 11:30:00 AM 11.655 0.347 235.827 11:30:00 PM 11.604 0.347 233.89 11:45:00 AM 11.671 0.306 223.674 11:45:00 PM 11.47 0.325 216.221 Inches Feet/Sec GPM
Daily Avg: 11.232 0.301 229.285
Daily Min: 9.746 0 110.827
Daily Max: 12.226 0.618 435.178
Peak to Avg: 1.90
Tuesday- A.M. 7/11/2023 Tuesday- P.M. 7/11/2023
DRAFT
784
Project: City of Santa Paula - Sewer Flow Study
Location: 416 Dartmouth, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/12/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
785
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 416 Dartmouth
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 11.188 0.392 252.733 12:00:00 PM 11.49 0.312 233.534 12:15:00 AM 10.973 0.368 230.157 12:15:00 PM 11.184 0.371 238.961 12:30:00 AM 10.842 0.317 196.047 12:30:00 PM 11.198 0.169 196.427 12:45:00 AM 10.727 0.262 179.447 12:45:00 PM 11.301 0.275 179.298 1:00:00 AM 10.523 0.313 185.961 1:00:00 PM 11.294 0.321 209.227 1:15:00 AM 10.242 0.252 144.715 1:15:00 PM 11.242 0.333 214.065 1:30:00 AM 10.097 0 125.786 1:30:00 PM 11.313 0.416 271.759 1:45:00 AM 10.034 0 124.761 1:45:00 PM 11.245 0 269.633 2:00:00 AM 9.9 0.225 123.371 2:00:00 PM 11.255 0.312 199.498 2:15:00 AM 9.877 0 123.056 2:15:00 PM 11.181 0.36 231.294 2:30:00 AM 9.896 0 123.371 2:30:00 PM 11.15 0.319 204.611 2:45:00 AM 9.755 0 121.037 2:45:00 PM 11.165 0.4 257.082 3:00:00 AM 9.713 0 120.344 3:00:00 PM 11.014 0.222 202.164 3:15:00 AM 9.648 0 119.271 3:15:00 PM 11.184 0.439 280.807 3:30:00 AM 9.638 0 119.116 3:30:00 PM 11.148 0.334 260.801 3:45:00 AM 9.725 0 120.553 3:45:00 PM 11.098 0.336 214.541 4:00:00 AM 9.661 0 119.486 4:00:00 PM 11.179 0.316 215.588 4:15:00 AM 9.513 0 117.052 4:15:00 PM 11.073 0.317 201.374 4:30:00 AM 9.547 0 117.604 4:30:00 PM 11.305 0 206.857
4:45:00 AM 9.437 0 115.793 4:45:00 PM 11.086 0.38 240.759 5:00:00 AM 9.58 0 118.155 5:00:00 PM 11.158 0.592 380.4 5:15:00 AM 9.593 0 118.367 5:15:00 PM 11.215 0.377 243.637 5:30:00 AM 9.744 0.248 130.973 5:30:00 PM 11.492 0.423 282.252 5:45:00 AM 9.808 0 115.449 5:45:00 PM 11.412 0.573 378.913 6:00:00 AM 9.865 0.249 136.239 6:00:00 PM 11.376 0.4 263.379 6:15:00 AM 10.063 0.257 143.859 6:15:00 PM 11.462 0.467 309.845 6:30:00 AM 10.105 0 144.653 6:30:00 PM 11.486 0.452 301.584 6:45:00 AM 10.151 0.326 184.798 6:45:00 PM 11.475 0.407 270.867 7:00:00 AM 10.193 0.316 180.124 7:00:00 PM 11.434 0 132.976 7:15:00 AM 10.321 0 145.168 7:15:00 PM 11.533 0.412 274.591 7:30:00 AM 10.524 0 148.934 7:30:00 PM 11.471 0.383 253.446 7:45:00 AM 10.45 0.273 160.933 7:45:00 PM 11.485 0.288 190.789 8:00:00 AM 10.567 0 163.305 8:00:00 PM 11.55 0.427 286.463 8:15:00 AM 10.92 0.295 184.067 8:15:00 PM 11.484 0.414 276.182 8:30:00 AM 11.027 0.356 224.6 8:30:00 PM 11.708 0.401 274.096 8:45:00 AM 10.991 0.337 212.08 8:45:00 PM 11.714 0.432 295.645 9:00:00 AM 11.174 0.408 262.164 9:00:00 PM 11.732 0.442 302.45 9:15:00 AM 11.292 0.372 264.691 9:15:00 PM 11.654 0.403 274.665 9:30:00 AM 11.456 0.313 244.415 9:30:00 PM 11.655 0.379 257.752 9:45:00 AM 11.437 0 207.608 9:45:00 PM 11.819 0.372 257.121 10:00:00 AM 11.303 0.339 217.189 10:00:00 PM 11.93 0.473 330.985 10:15:00 AM 11.151 0.44 282.117 10:15:00 PM 11.947 0.361 331.575 10:30:00 AM 11.156 0.257 164.233 10:30:00 PM 11.722 0.398 269.839 10:45:00 AM 11.242 0.295 191.309 10:45:00 PM 11.764 0.44 301.983 11:00:00 AM 11.209 0.257 166.162 11:00:00 PM 11.754 0.43 295.507 11:15:00 AM 10.954 0.281 175.586 11:15:00 PM 11.68 0.402 293.118 11:30:00 AM 10.992 0 163.391 11:30:00 PM 11.44 0.367 239.205 11:45:00 AM 11.422 0.35 231.737 11:45:00 PM 11.181 0.364 232.871 Inches Feet/Sec GPM
Daily Avg: 10.908 0.262 210.944
Daily Min: 9.437 0 115.449
Daily Max: 11.947 0.592 380.4
Peak to Avg: 1.80
Wednesday - A.M. 7/12/2023 Wednesday - P.M. 7/12/2023
DRAFT
786
Project: City of Santa Paula - Sewer Flow Study
Location: 416 Dartmouth, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/13/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
787
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 416 Dartmouth
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 11.004 0.375 231.892 12:00:00 PM 11.431 0.024 207.032 12:15:00 AM 10.79 0.317 230.763 12:15:00 PM 11.406 0.391 258.197 12:30:00 AM 10.662 0.28 168.132 12:30:00 PM 11.457 0.354 233.366 12:45:00 AM 10.545 0 154.368 12:45:00 PM 11.308 0.389 253.81 1:00:00 AM 10.433 0.235 152.232 1:00:00 PM 11.253 0.366 237.877 1:15:00 AM 10.27 0.227 135.633 1:15:00 PM 11.086 0.371 235.471 1:30:00 AM 10.107 0.25 141.168 1:30:00 PM 11.177 0.379 243.547 1:45:00 AM 10.057 0 109.17 1:45:00 PM 11.141 0.389 246.087 2:00:00 AM 10.036 0 108.862 2:00:00 PM 11.038 0.368 233.091 2:15:00 AM 9.854 0 106.244 2:15:00 PM 11.041 0.331 208.937 2:30:00 AM 9.866 0.208 113.1 2:30:00 PM 11.262 0.372 239.524 2:45:00 AM 9.724 0 92.29 2:45:00 PM 11.255 0.357 227.637 3:00:00 AM 9.622 0 90.993 3:00:00 PM 11.272 0.383 249.163 3:15:00 AM 9.634 0.219 116.096 3:15:00 PM 11.411 0.371 252.273 3:30:00 AM 9.608 0.221 116.37 3:30:00 PM 11.231 0.376 243.474 3:45:00 AM 9.629 0 116.712 3:45:00 PM 11.122 0.394 251.389 4:00:00 AM 9.606 0.224 118.066 4:00:00 PM 10.964 0.351 220.414 4:15:00 AM 9.538 0 117.137 4:15:00 PM 11.028 0.306 193.674 4:30:00 AM 9.413 0.212 108.545 4:30:00 PM 10.981 0.367 229.526 4:45:00 AM 9.429 0.205 105.182 4:45:00 PM 11.068 0.35 222.374 5:00:00 AM 9.428 0.195 100.158 5:00:00 PM 11.081 0.366 232.55 5:15:00 AM 9.547 0.224 117.206 5:15:00 PM 11.163 0.42 266.519 5:30:00 AM 9.5 0.342 175.437 5:30:00 PM 11.122 0.405 266.466 5:45:00 AM 9.587 0.262 177.247 5:45:00 PM 11.17 0.359 230.728 6:00:00 AM 9.697 0.287 153.18 6:00:00 PM 11.263 0.363 235.99 6:15:00 AM 9.73 0.305 163.489 6:15:00 PM 11.4 0.395 259.635 6:30:00 AM 10.007 0.325 181.083 6:30:00 PM 11.446 0.381 252.697 6:45:00 AM 10.186 0.342 195.029 6:45:00 PM 11.33 0.408 266.642 7:00:00 AM 10.174 0.335 190.667 7:00:00 PM 11.373 0.39 256.942 7:15:00 AM 10.334 0.316 180.33 7:15:00 PM 11.341 0.391 255.751 7:30:00 AM 10.48 0.34 199.02 7:30:00 PM 11.408 0.361 238.402 7:45:00 AM 10.655 0.4 237.571 7:45:00 PM 11.419 0.43 284.332 8:00:00 AM 10.768 0.408 249.749 8:00:00 PM 11.457 0.485 322.034 8:15:00 AM 10.92 0.443 273.673 8:15:00 PM 11.577 0.368 326.377 8:30:00 AM 11.005 0.316 199.333 8:30:00 PM 11.544 0.414 277.574 8:45:00 AM 11.048 0.388 244.894 8:45:00 PM 11.844 0.46 319.215 9:00:00 AM 11.175 0.403 257.604 9:00:00 PM 11.737 0.4 274.204 9:15:00 AM 11.221 0.365 234.811 9:15:00 PM 11.449 0.44 290.531 9:30:00 AM 11.241 0.355 230.146 9:30:00 PM 11.555 0.691 464.318 9:45:00 AM 11.155 0.317 226.931 9:45:00 PM 11.525 0.412 276.014 10:00:00 AM 11.263 0.405 263.116 10:00:00 PM 11.466 0.357 237.169 10:15:00 AM 11.276 0.37 240.019 10:15:00 PM 11.625 0.25 169.474 10:30:00 AM 11.24 0.324 210.27 10:30:00 PM 11.625 0.404 273.193 10:45:00 AM 11.429 0.366 242.636 10:45:00 PM 11.637 0.388 258.103 11:00:00 AM 11.505 0.427 284.437 11:00:00 PM 11.357 0.415 270.749 11:15:00 AM 11.371 0.357 280.73 11:15:00 PM 11.26 0.408 263.435 11:30:00 AM 11.38 0 235.091 11:30:00 PM 11.266 0.358 227.71 11:45:00 AM 11.206 0.367 236.4 11:45:00 PM 11.037 0.4 248.255 Inches Feet/Sec GPM
Daily Avg: 10.850 0.318 216.981
Daily Min: 9.413 0 90.993
Daily Max: 11.844 0.691 464.318
Peak to Avg: 2.14
Thursday - A.M. 7/13/2023 Thursday - P.M. 7/13/2023
DRAFT
788
Project: City of Santa Paula - Sewer Flow Study
Location: 416 Dartmouth, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/14/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
789
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 416 Dartmouth
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 10.911 0.353 219.617 12:00:00 PM 11.365 0.25 196.874 12:15:00 AM 10.955 0.327 205.045 12:15:00 PM 11.198 0.321 205.912 12:30:00 AM 10.674 0.287 172.345 12:30:00 PM 11.178 0.349 224.517 12:45:00 AM 10.499 0.298 176.094 12:45:00 PM 11.474 0.424 276.868 1:00:00 AM 10.302 0.271 156.836 1:00:00 PM 11.475 0.285 203.707 1:15:00 AM 10.271 0.275 158.221 1:15:00 PM 11.441 0.255 168.948 1:30:00 AM 10.093 0.241 154.617 1:30:00 PM 11.241 0 165.158 1:45:00 AM 9.951 0 133.364 1:45:00 PM 11.099 0.361 230.423 2:00:00 AM 9.892 0 132.315 2:00:00 PM 11.223 0.332 214.571 2:15:00 AM 9.733 0 129.495 2:15:00 PM 11.223 0.392 253.332 2:30:00 AM 9.691 0.17 128.747 2:30:00 PM 11.269 0.394 256.416 2:45:00 AM 9.61 0 89.704 2:45:00 PM 11.192 0 190.363
3:00:00 AM 9.507 0 88.423 3:00:00 PM 11.215 0 190.867
3:15:00 AM 9.507 0.178 91.441 3:15:00 PM 11.056 0 187.353 3:30:00 AM 9.504 0 92.532 3:30:00 PM 11.055 0 187.344
3:45:00 AM 9.502 0.186 96.352 3:45:00 PM 11.169 0 189.847 4:00:00 AM 9.476 0 96.252 4:00:00 PM 11.159 0.294 189.629 4:15:00 AM 9.456 0.322 166.079 4:15:00 PM 11.062 0.224 142.021 4:30:00 AM 9.325 0.23 163.335 4:30:00 PM 11.243 0 145.044 4:45:00 AM 9.377 0.23 117.221 4:45:00 PM 11.176 0.385 247.823 5:00:00 AM 9.4 0.263 134.789 5:00:00 PM 11.388 0.358 235.745 5:15:00 AM 9.606 0.256 135.216 5:15:00 PM 11.301 0.03 233.405 5:30:00 AM 9.591 0.242 126.765 5:30:00 PM 11.302 0.433 282.43 5:45:00 AM 9.514 0.366 190.345 5:45:00 PM 11.27 0.35 227.676 6:00:00 AM 9.777 0 197.569 6:00:00 PM 11.29 0.275 179.28 6:15:00 AM 9.818 0.179 198.653 6:15:00 PM 11.38 0.398 262.238 6:30:00 AM 9.896 0.319 174.685 6:30:00 PM 11.431 0.377 248.621 6:45:00 AM 9.928 0.425 234.168 6:45:00 PM 11.42 0.378 250.203 7:00:00 AM 10.076 0 238.817 7:00:00 PM 11.338 0.304 198.606 7:15:00 AM 10.11 0.356 199.067 7:15:00 PM 11.346 0.352 231.281 7:30:00 AM 10.336 0.299 173.976 7:30:00 PM 11.341 0.324 212.6 7:45:00 AM 10.518 0.381 226.579 7:45:00 PM 11.397 0.177 213.961 8:00:00 AM 10.836 0.381 235.709 8:00:00 PM 11.48 0.229 152.845 8:15:00 AM 10.844 0.375 232.311 8:15:00 PM 11.453 0.443 290.424 8:30:00 AM 10.822 0.366 222.853 8:30:00 PM 11.374 0.364 239.628 8:45:00 AM 10.829 0.352 215.825 8:45:00 PM 11.485 0.416 277.054 9:00:00 AM 11.066 0.363 228.107 9:00:00 PM 11.479 0.408 269.844 9:15:00 AM 11.141 0.4 256.162 9:15:00 PM 11.396 0.397 261.167 9:30:00 AM 11.176 0.389 250.119 9:30:00 PM 11.336 0.389 254.707 9:45:00 AM 11.299 0.406 264.686 9:45:00 PM 11.298 0.375 244.153 10:00:00 AM 11.27 0.326 233.406 10:00:00 PM 11.311 0.375 244.975 10:15:00 AM 11.394 0.385 250.904 10:15:00 PM 11.209 0 226.502 10:30:00 AM 11.343 0.395 258.831 10:30:00 PM 11.067 0.365 231.996 10:45:00 AM 11.202 0 254.678 10:45:00 PM 11.294 0.344 233.684 11:00:00 AM 11.178 0.382 252.774 11:00:00 PM 11.27 0.36 234.288 11:15:00 AM 11.407 0.375 242.969 11:15:00 PM 11.169 0.351 225.766 11:30:00 AM 11.457 0.299 200.357 11:30:00 PM 11.065 0.38 240.441 11:45:00 AM 11.345 0 196.422 11:45:00 PM 10.963 0.219 238.413 Inches Feet/Sec GPM
Daily Avg: 10.799 0.260 202.991
Daily Min: 9.325 0 88.423
Daily Max: 11.485 0.443 290.424
Peak to Avg: 1.43
Friday - A.M. 7/14/2023 Friday - P.M. 7/14/2023
DRAFT
790
Project: City of Santa Paula - Sewer Flow Study
Location: 416 Dartmouth, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/15/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
791
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 416 Dartmouth
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 10.909 0.358 221.001 12:00:00 PM 11.696 0.661 449.317 12:15:00 AM 10.762 0.376 228.583 12:15:00 PM 11.77 0.508 349.285 12:30:00 AM 10.734 0 188.613 12:30:00 PM 11.84 0.374 259.048 12:45:00 AM 10.585 0 185.192 12:45:00 PM 11.95 0.516 360.984 1:00:00 AM 10.42 0.149 181.416 1:00:00 PM 11.962 0.477 361.42 1:15:00 AM 10.242 0.193 111.014 1:15:00 PM 11.879 0.505 349.506 1:30:00 AM 10.212 0 110.583 1:30:00 PM 11.824 0.461 318.379 1:45:00 AM 10.085 0.234 131.068 1:45:00 PM 11.809 0.552 381.308 2:00:00 AM 10.035 0.354 197.614 2:00:00 PM 11.785 0.545 374.48 2:15:00 AM 9.942 0 148.686 2:15:00 PM 11.697 0.501 340.986 2:30:00 AM 9.908 0.284 154.346 2:30:00 PM 11.775 0.565 389.126 2:45:00 AM 9.818 0.228 153.884 2:45:00 PM 11.804 0.634 437.674 3:00:00 AM 9.648 0 120.986 3:00:00 PM 11.732 0.446 373.705 3:15:00 AM 9.589 0 119.994 3:15:00 PM 11.699 0.475 324.094 3:30:00 AM 9.599 0.248 130.86 3:30:00 PM 11.662 0.538 365.53 3:45:00 AM 9.614 0 131.13 3:45:00 PM 11.668 0.5 340.145 4:00:00 AM 9.618 0.264 139.255 4:00:00 PM 11.723 0.504 343.528 4:15:00 AM 9.538 0 137.716 4:15:00 PM 11.652 0.567 382.931 4:30:00 AM 9.438 0 135.777 4:30:00 PM 11.519 0.529 354.238 4:45:00 AM 9.402 0.192 98.33 4:45:00 PM 11.331 0.596 390.6 5:00:00 AM 9.427 0 98.687 5:00:00 PM 11.326 0.43 390.364 5:15:00 AM 9.433 0 98.775 5:15:00 PM 11.393 0.401 264.382 5:30:00 AM 9.552 0.225 117.722 5:30:00 PM 11.387 0.448 295.09 5:45:00 AM 9.524 0 117.252 5:45:00 PM 11.383 0.521 343.515 6:00:00 AM 9.416 0.255 130.804 6:00:00 PM 11.327 0.469 305.904 6:15:00 AM 9.537 0.263 137.301 6:15:00 PM 11.385 0.457 301.388 6:30:00 AM 9.513 0.269 140.085 6:30:00 PM 11.393 0.468 308.403 6:45:00 AM 9.522 0.211 138.957 6:45:00 PM 11.297 0.46 299.64 7:00:00 AM 9.638 0 111.949 7:00:00 PM 11.236 0.374 242.174 7:15:00 AM 9.796 0 114.402 7:15:00 PM 11.323 0.506 331.406 7:30:00 AM 10.052 0 118.386 7:30:00 PM 11.203 0.617 388.405 7:45:00 AM 10.042 0.329 183.611 7:45:00 PM 11.2 0.439 282.406 8:00:00 AM 10.175 0.524 295.258 8:00:00 PM 11.143 0.453 290.548 8:15:00 AM 10.313 0.396 229.571 8:15:00 PM 11.148 0.458 293.947 8:30:00 AM 10.324 0.336 193.748 8:30:00 PM 11.201 0.503 323.646 8:45:00 AM 10.591 0.393 230.544 8:45:00 PM 11.271 0.664 430.739 9:00:00 AM 10.847 0.411 246.74 9:00:00 PM 11.323 0.6 388.396 9:15:00 AM 10.975 0.592 370.711 9:15:00 PM 11.122 0.556 383.898 9:30:00 AM 11.201 0.455 293.602 9:30:00 PM 11.025 0.376 237.508 9:45:00 AM 11.566 0.374 245.995 9:45:00 PM 10.974 0.398 249.184 10:00:00 AM 11.542 0.5 332.878 10:00:00 PM 11.264 0.424 268.423 10:15:00 AM 11.562 0.477 317.844 10:15:00 PM 11.378 0.327 215.247 10:30:00 AM 11.578 0.451 301.394 10:30:00 PM 11.362 0.581 380.552 10:45:00 AM 11.741 0.482 328.436 10:45:00 PM 11.306 0 379.592 11:00:00 AM 11.763 0 331.241 11:00:00 PM 11.193 0.454 292.946 11:15:00 AM 11.709 0.425 289.87 11:15:00 PM 10.992 0.412 271.602 11:30:00 AM 11.792 0.466 321.561 11:30:00 PM 11.033 0.538 339.645 11:45:00 AM 11.695 0.573 389.483 11:45:00 PM 11.024 0.505 315.834 Inches Feet/Sec GPM
Daily Avg: 10.878 0.360 264.136
Daily Min: 9.402 0 98.33
Daily Max: 11.962 0.664 449.317
Peak to Avg: 1.70
Saturday - A.M. 7/15/2023 Saturday - P.M. 7/15/2023
DRAFT
792
Project: City of Santa Paula - Sewer Flow Study
Location: 416 Dartmouth, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/16/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
793
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 416 Dartmouth
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 10.754 0.382 232.604 12:00:00 PM 11.828 0.437 300.74 12:15:00 AM 10.589 0.813 485.304 12:15:00 PM 11.748 0.417 286.412 12:30:00 AM 10.59 0.481 287.362 12:30:00 PM 11.709 0.484 330.754 12:45:00 AM 10.481 0.436 255.478 12:45:00 PM 11.628 0.623 421.863 1:00:00 AM 10.422 0.329 254.888 1:00:00 PM 11.615 0.483 326.692 1:15:00 AM 10.364 0.347 202.253 1:15:00 PM 11.775 0.508 349.645 1:30:00 AM 10.27 0.406 230.526 1:30:00 PM 11.922 0.47 328.972 1:45:00 AM 10.105 0.341 192.183 1:45:00 PM 11.807 0.62 428.128 2:00:00 AM 9.913 0.283 155.47 2:00:00 PM 11.618 0 419.361 2:15:00 AM 9.965 0 156.552 2:15:00 PM 11.565 0.515 416.895 2:30:00 AM 9.931 0.238 155.844 2:30:00 PM 11.668 0.532 356.269 2:45:00 AM 9.831 0.364 196.851 2:45:00 PM 11.635 0.421 285.592 3:00:00 AM 9.653 0 193.151 3:00:00 PM 11.575 0.436 293.349 3:15:00 AM 9.597 0 191.648 3:15:00 PM 11.359 0.443 290.98 3:30:00 AM 9.607 0 191.929 3:30:00 PM 11.267 0.422 274.59 3:45:00 AM 9.648 0 192.998 3:45:00 PM 11.436 0.391 259.005 4:00:00 AM 9.498 0 189.021 4:00:00 PM 11.486 0.409 270.991 4:15:00 AM 9.498 0 189.019 4:15:00 PM 11.446 0.402 266.551 4:30:00 AM 9.413 0 186.749 4:30:00 PM 11.357 0.409 268.423 4:45:00 AM 9.493 0.278 144.316 4:45:00 PM 11.455 0.416 275.099 5:00:00 AM 9.384 0 142.097 5:00:00 PM 11.445 0.509 335.351 5:15:00 AM 9.279 0 139.964 5:15:00 PM 11.496 0.518 344.367 5:30:00 AM 9.392 0.239 122.098 5:30:00 PM 11.471 0.42 274.721 5:45:00 AM 9.326 0 120.955 5:45:00 PM 11.193 0.303 270.924 6:00:00 AM 9.345 0.24 122.161 6:00:00 PM 11.063 0.437 277.544 6:15:00 AM 9.406 0.24 122.884 6:15:00 PM 11.102 0.434 275.906 6:30:00 AM 9.478 0 124.15 6:30:00 PM 11.166 0.521 333.311 6:45:00 AM 9.481 0.308 159.448 6:45:00 PM 11.139 0.397 254.147 7:00:00 AM 9.66 0.272 140.085 7:00:00 PM 11.233 0.428 277.125 7:15:00 AM 9.84 0.371 200.858 7:15:00 PM 11.302 0.445 289.522 7:30:00 AM 9.806 0.314 169.718 7:30:00 PM 11.359 0.536 348.083 7:45:00 AM 10.093 0.335 184.956 7:45:00 PM 11.241 0.595 385.264 8:00:00 AM 10.049 0.264 156.782 8:00:00 PM 11.276 0.476 309.904 8:15:00 AM 10.181 0.341 192.309 8:15:00 PM 11.373 0.472 309.394 8:30:00 AM 10.443 0.377 215.082 8:30:00 PM 11.419 0.482 318.044 8:45:00 AM 10.531 0.358 213.272 8:45:00 PM 11.429 0.497 329.146 9:00:00 AM 10.626 0.297 178.62 9:00:00 PM 11.46 0.381 253.081 9:15:00 AM 10.789 0.303 186.288 9:15:00 PM 11.558 0.414 278.232 9:30:00 AM 11.102 0.536 342.072 9:30:00 PM 11.559 0.611 410.025 9:45:00 AM 11.185 0.542 348.148 9:45:00 PM 11.699 0.671 457.882 10:00:00 AM 11.486 0.54 351.047 10:00:00 PM 11.738 0.512 350.798 10:15:00 AM 11.603 0.474 317.759 10:15:00 PM 11.572 0.571 384.499 10:30:00 AM 11.636 0.6 405.313 10:30:00 PM 11.534 0.408 272.462 10:45:00 AM 11.762 0.421 289.313 10:45:00 PM 11.61 0.642 433.712 11:00:00 AM 11.895 0.775 540.432 11:00:00 PM 11.5 0.372 248.602 11:15:00 AM 11.844 0.492 537.409 11:15:00 PM 11.243 0.568 367.196 11:30:00 AM 11.839 0.447 308.873 11:30:00 PM 11.178 0.548 351.052 11:45:00 AM 11.784 0.61 419.903 11:45:00 PM 11.039 0.518 328.301 Inches Feet/Sec GPM
Daily Avg: 10.867 0.385 277.078
Daily Min: 9.279 0 120.955
Daily Max: 11.922 0.813 540.432
Peak to Avg: 1.95
Sunday - A.M. 7/16/2023 Sunday - P.M. 7/16/2023
DRAFT
794
Project: City of Santa Paula - Sewer Flow Study
Location: 416 Dartmouth, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/17/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
795
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 416 Dartmouth
Time Level Velocity Velocity Time Level Velocity Flow
12:10:00 AM 10.846 0.548 337.004 12:00:00 PM 11.229 0.246 159.491 12:15:00 AM 10.632 0.456 273.097 12:15:00 PM 11.177 0 158.529 12:30:00 AM 10.594 0.435 257.864 12:30:00 PM 11.237 0.27 174.67 12:45:00 AM 10.463 0.42 247.71 12:45:00 PM 11.504 0.456 304.61 1:00:00 AM 10.353 0.362 206.835 1:00:00 PM 11.413 0.544 359.838 1:15:00 AM 10.113 0.415 232.693 1:15:00 PM 11.391 0.4 264.007 1:30:00 AM 9.985 0.331 183.51 1:30:00 PM 11.184 0.313 257.8 1:45:00 AM 9.939 0.404 222.608 1:45:00 PM 11.293 0.378 246.539 2:00:00 AM 9.858 0.348 188.961 2:00:00 PM 11.242 0.468 300.946 2:15:00 AM 9.772 0.316 169.336 2:15:00 PM 11.054 0.392 248.19 2:30:00 AM 9.862 0.305 166.245 2:30:00 PM 11.017 0.408 257.244 2:45:00 AM 9.808 0.392 212.19 2:45:00 PM 11.067 0.456 287.992 3:00:00 AM 9.62 0.32 168.873 3:00:00 PM 11.033 0.363 228.449 3:15:00 AM 9.465 0.234 157.584 3:15:00 PM 11.131 0.5 318.26 3:30:00 AM 9.478 0.281 145.669 3:30:00 PM 11.108 0.456 289.898 3:45:00 AM 9.485 0.312 160.908 3:45:00 PM 11.218 0.432 279.17 4:00:00 AM 9.426 0.303 154.921 4:00:00 PM 11.374 0.544 357.895 4:15:00 AM 9.433 0.3 154.335 4:15:00 PM 11.444 0.472 312.833 4:30:00 AM 9.294 0.31 153.911 4:30:00 PM 11.469 0.455 302.743 4:45:00 AM 9.357 0 157.972 4:45:00 PM 11.339 0.553 362.275 5:00:00 AM 9.396 0 158.854 5:00:00 PM 11.238 0.568 365.901 5:15:00 AM 9.341 0.168 156.091 5:15:00 PM 11.264 0.358 234.408 5:30:00 AM 9.535 0.327 170.127 5:30:00 PM 11.228 0.501 319.32 5:45:00 AM 9.718 0.532 284.624 5:45:00 PM 11.296 0.488 315.491 6:00:00 AM 9.787 0 287.309 6:00:00 PM 11.235 0.408 264.217 6:15:00 AM 9.706 0 284.149 6:15:00 PM 11.24 0.367 238.034 6:30:00 AM 9.881 0 290.98 6:30:00 PM 11.436 0.741 491.486 6:45:00 AM 9.984 0.417 295.011 6:45:00 PM 11.486 0.493 328.508 7:00:00 AM 10.006 0.287 158.106 7:00:00 PM 11.374 0.339 324.4 7:15:00 AM 10.307 0.379 217.79 7:15:00 PM 11.462 0.589 387.427 7:30:00 AM 10.313 0.335 193.515 7:30:00 PM 11.578 0.437 292.056 7:45:00 AM 10.539 0.379 222.888 7:45:00 PM 11.559 0.415 277.966 8:00:00 AM 10.884 0.407 246.901 8:00:00 PM 11.753 0.475 321.525 8:15:00 AM 10.946 0.351 219.828 8:15:00 PM 11.801 0.396 273.019 8:30:00 AM 10.848 0.369 228.281 8:30:00 PM 11.625 0.568 384.644 8:45:00 AM 10.864 0.384 238.092 8:45:00 PM 11.669 0.634 431.532 9:00:00 AM 11.207 0.367 229.374 9:00:00 PM 11.684 0.503 342.512 9:15:00 AM 11.551 0.35 234.123 9:15:00 PM 11.68 0.508 345.361 9:30:00 AM 11.64 0.521 353.137 9:30:00 PM 11.56 0.513 343.965 9:45:00 AM 11.369 0.554 361.557 9:45:00 PM 11.609 0.543 366.727 10:00:00 AM 11.357 0.564 370.4 10:00:00 PM 11.721 0.349 237.861 10:15:00 AM 11.318 0.46 299.268 10:15:00 PM 11.808 0.228 195.229 10:30:00 AM 11.217 0.687 442.366 10:30:00 PM 11.815 0 157.805 10:45:00 AM 11.142 0.168 107.476 10:45:00 PM 11.671 0.657 445.772 11:00:00 AM 11.039 0.481 304.716 11:00:00 PM 11.625 0.536 361.149 11:15:00 AM 11.198 0.416 305.903 11:15:00 PM 11.353 0.432 280.524 11:30:00 AM 11.323 0.391 255.41 11:30:00 PM 11.162 0.485 307.19 11:45:00 AM 11.329 0.388 253.431 11:45:00 PM 11.008 0.452 285.299 Inches Feet/Sec GPM
Daily Avg: 10.858 0.390 265.007
Daily Min: 9.294 0 107.476
Daily Max: 11.815 0.741 491.486
Peak to Avg: 1.85
Monday - A.M. 7/17/2023 Monday - P.M. 7/17/2023
DRAFT
796
Project: City of Santa Paula - Sewer Flow Study
Location: 416 Dartmouth, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/18/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
797
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 416 Dartmouth
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 10.99 0.453 280.813 12:00:00 PM 11.157 0.422 270.205 12:15:00 AM 10.785 0.321 197.034 12:15:00 PM 11.297 0.468 300.893 12:30:00 AM 10.535 0.355 210.128 12:30:00 PM 11.354 0.459 298.275 12:45:00 AM 10.549 0.649 386.837 12:45:00 PM 11.183 0.513 330.518 1:00:00 AM 10.324 0.433 248.033 1:00:00 PM 11.198 0.498 319.734 1:15:00 AM 10.1 0.385 214.809 1:15:00 PM 11.202 0.592 382.042 1:30:00 AM 9.953 0.371 204.324 1:30:00 PM 10.95 0.375 234.073 1:45:00 AM 9.87 0.379 206.125 1:45:00 PM 10.904 0.359 222.787 2:00:00 AM 9.725 0.355 188.953 2:00:00 PM 10.851 0.348 214.669 2:15:00 AM 9.687 0.315 166.437 2:15:00 PM 10.857 0.407 251.653 2:30:00 AM 9.769 0.311 167.477 2:30:00 PM 10.878 0.358 221.373 2:45:00 AM 9.665 0.281 158.979 2:45:00 PM 11.023 0.354 223.721 3:00:00 AM 9.399 0 143.777 3:00:00 PM 11.033 0.406 256.725 3:15:00 AM 9.366 0 143.094 3:15:00 PM 11.09 0.564 359.226 3:30:00 AM 9.349 0.267 134.579 3:30:00 PM 11.145 0.484 310.109 3:45:00 AM 9.348 0.265 134.94 3:45:00 PM 11.11 0.442 282.454 4:00:00 AM 9.341 0.271 137.226 4:00:00 PM 11.089 0.503 319.585 4:15:00 AM 9.279 0.242 120.285 4:15:00 PM 11.059 0.378 239.727 4:30:00 AM 9.049 0.228 110.009 4:30:00 PM 11.064 0.388 245.379 4:45:00 AM 9.249 0.224 112.448 4:45:00 PM 11.298 0.353 230.441 5:00:00 AM 9.28 0.274 137.923 5:00:00 PM 11.277 0.382 248.954 5:15:00 AM 9.372 0.322 164.401 5:15:00 PM 11.137 0.441 282.619 5:30:00 AM 9.432 0.329 169.172 5:30:00 PM 11.039 0.576 361.669 5:45:00 AM 9.36 0 107.19 5:45:00 PM 10.927 0.369 230.838 6:00:00 AM 9.562 0.307 160.606 6:00:00 PM 11.205 0.534 340.388 6:15:00 AM 9.668 0.357 189.736 6:15:00 PM 11.31 0.406 261.582 6:30:00 AM 9.845 0.373 202.51 6:30:00 PM 11.27 0.588 380.885 6:45:00 AM 9.827 0.354 191.488 6:45:00 PM 11.259 0.607 394.434 7:00:00 AM 9.954 0.357 197.319 7:00:00 PM 11.283 0.595 387.801 7:15:00 AM 10.17 0.415 235.975 7:15:00 PM 11.466 0.554 368.35 7:30:00 AM 10.127 0.363 205.355 7:30:00 PM 11.525 0.368 367.073 7:45:00 AM 10.486 0.466 270.201 7:45:00 PM 11.588 0.606 406.431 8:00:00 AM 10.781 0.485 294.62 8:00:00 PM 11.598 0.61 411.487 8:15:00 AM 10.9 0.455 279.899 8:15:00 PM 11.537 0.475 315.868 8:30:00 AM 10.993 0.523 328.082 8:30:00 PM 11.466 0.659 435.441 8:45:00 AM 10.991 0.578 362.155 8:45:00 PM 11.435 0.588 389.848 9:00:00 AM 11.24 0.542 351.642 9:00:00 PM 11.462 0.384 254.585 9:15:00 AM 11.325 0.543 354.112 9:15:00 PM 11.54 0.277 241.919 9:30:00 AM 11.144 0.538 340.908 9:30:00 PM 11.61 0 187.493 9:45:00 AM 11.156 0.618 396.683 9:45:00 PM 11.715 0.544 370.482 10:00:00 AM 11.227 0.377 243.209 10:00:00 PM 11.649 0.548 372.31 10:15:00 AM 11.113 0.475 303.18 10:15:00 PM 11.677 0.285 193.967 10:30:00 AM 10.998 0.486 305.994 10:30:00 PM 11.715 0 194.769 10:45:00 AM 11.056 0.408 255.166 10:45:00 PM 11.758 0.68 466.787 11:00:00 AM 11.218 0.573 370.675 11:00:00 PM 11.615 0.571 378.281 11:15:00 AM 11.258 0.588 381.567 11:15:00 PM 11.346 0.589 381.163 11:30:00 AM 11.151 0.615 393.827 11:30:00 PM 11.071 0.459 329.887 11:45:00 AM 11.173 0.429 274.189 11:45:00 PM 10.889 0.5 308.35 Inches Feet/Sec GPM
Daily Avg: 10.750 0.418 269.795
Daily Min: 9.049 0 107.19
Daily Max: 11.758 0.68 466.787
Peak to Avg: 1.73
Tuesday- A.M. 7/18/2023 Tuesday- P.M. 7/18/2023
DRAFT
798
Project: City of Santa Paula - Sewer Flow Study
Location: 416 Dartmouth, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/19/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
799
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 416 Dartmouth
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 10.756 0 305.887 12:00:00 PM 11.085 0 360.97 12:15:00 AM 10.661 0 302.345 12:15:00 PM 11.074 0.523 357.786 12:30:00 AM 10.563 0.387 298.71 12:30:00 PM 11.238 0.445 288.451 12:45:00 AM 10.423 0 227.243 12:45:00 PM 11.341 0.481 314.287 1:00:00 AM 10.183 0 220.363 1:00:00 PM 11.24 0.42 269.658 1:15:00 AM 10.12 0 218.568 1:15:00 PM 11.062 0.366 230.542 1:30:00 AM 9.936 0 213.334 1:30:00 PM 11.347 0.596 381.458 1:45:00 AM 9.852 0 210.924 1:45:00 PM 10.977 0.465 287.857 2:00:00 AM 9.71 0 206.878 2:00:00 PM 11.058 0.399 250.781 2:15:00 AM 9.631 0 204.643 2:15:00 PM 10.989 0.572 358.271 2:30:00 AM 9.613 0 204.144 2:30:00 PM 11.144 0.368 234.948 2:45:00 AM 9.574 0.207 108.872 2:45:00 PM 11.108 0.363 230.237 3:00:00 AM 9.465 0 107.212 3:00:00 PM 11.03 0.434 274.548 3:15:00 AM 9.43 0 106.682 3:15:00 PM 10.897 0.518 321.125 3:30:00 AM 9.324 0 105.076 3:30:00 PM 10.804 0 269.989
3:45:00 AM 9.371 0 105.785 3:45:00 PM 10.702 0.366 222.018 4:00:00 AM 9.246 0 103.901 4:00:00 PM 10.751 0.259 220.123 4:15:00 AM 9.277 0.246 123.616 4:15:00 PM 10.825 0.375 231.577 4:30:00 AM 9.281 0 123.69 4:30:00 PM 10.859 0.615 379.376 4:45:00 AM 9.274 0.349 175.473 4:45:00 PM 10.959 0.543 338.399 5:00:00 AM 9.289 0 175.876 5:00:00 PM 10.979 0.42 262.528 5:15:00 AM 9.24 0.258 174.388 5:15:00 PM 10.963 0.44 272.346 5:30:00 AM 9.525 0.335 174.623 5:30:00 PM 10.858 0.423 261.988 5:45:00 AM 9.633 0.647 342.136 5:45:00 PM 10.953 0.469 293.116 6:00:00 AM 9.608 0 340.919 6:00:00 PM 11.043 0.441 279.088 6:15:00 AM 9.668 0 343.769 6:15:00 PM 11.077 0.584 371.639 6:30:00 AM 9.609 0.312 163.53 6:30:00 PM 11.095 0.54 343.782 6:45:00 AM 9.868 0.391 208.158 6:45:00 PM 11.326 0.524 342.954 7:00:00 AM 9.876 0.306 165.967 7:00:00 PM 11.303 0.406 265.18 7:15:00 AM 10.043 0.282 157.629 7:15:00 PM 11.161 0.621 398.424 7:30:00 AM 10.222 0.507 287.309 7:30:00 PM 11.24 0.552 354.569 7:45:00 AM 10.379 0.459 262.828 7:45:00 PM 11.208 0.467 301.274 8:00:00 AM 10.538 0.325 192.937 8:00:00 PM 11.296 0.594 387.361 8:15:00 AM 10.574 0.303 179.536 8:15:00 PM 11.252 0.63 408.775 8:30:00 AM 10.751 0.334 204.415 8:30:00 PM 11.413 0.492 325.173 8:45:00 AM 10.956 0.644 397.46 8:45:00 PM 11.463 0.664 441.173 9:00:00 AM 11.176 0.585 369.264 9:00:00 PM 11.493 0.385 256.221 9:15:00 AM 11.179 0.631 406.442 9:15:00 PM 11.593 0.62 418.512 9:30:00 AM 11.124 0.54 345.179 9:30:00 PM 11.556 0.393 416.791 9:45:00 AM 11.112 0.59 374.907 9:45:00 PM 11.593 0.377 254.223 10:00:00 AM 11.139 0.414 265.138 10:00:00 PM 11.725 0.508 347.572 10:15:00 AM 11.114 0.574 365.584 10:15:00 PM 11.706 0.365 248.438 10:30:00 AM 11.12 0.407 260.33 10:30:00 PM 11.699 0.543 367.343 10:45:00 AM 11.106 0.577 366.267 10:45:00 PM 11.596 0.393 265.469 11:00:00 AM 10.995 0.635 399.776 11:00:00 PM 11.477 0.451 298.832 11:15:00 AM 11.212 0.603 403.986 11:15:00 PM 11.379 0.578 380.807 11:30:00 AM 11.323 0.506 330.993 11:30:00 PM 11.029 0 208.912 11:45:00 AM 11.091 0.567 361.227 11:45:00 PM 11.072 0.546 342.511 Inches Feet/Sec GPM
Daily Avg: 10.689 0.363 277.110
Daily Min: 9.24 0 103.901
Daily Max: 11.725 0.664 441.173
Peak to Avg: 1.59
Wednesday - A.M. 7/19/2023 Wednesday - P.M. 7/19/2023
DRAFT
800
Project: City of Santa Paula - Sewer Flow Study
Location: 416 Dartmouth, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/20/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
801
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 416 Dartmouth
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 10.856 0.473 287.896 12:00:00 PM 10.933 0.56 350.273 12:15:00 AM 10.62 0.496 295.316 12:15:00 PM 10.973 0.44 274.849 12:30:00 AM 10.516 0.497 289.271 12:30:00 PM 10.946 0.379 273.723 12:45:00 AM 10.251 0.4 224.497 12:45:00 PM 10.853 0.555 341.842 1:00:00 AM 9.981 0.362 200.568 1:00:00 PM 10.946 0.6 375.27 1:15:00 AM 9.744 0.362 193.264 1:15:00 PM 10.92 0.518 321.107 1:30:00 AM 9.76 0.376 201.633 1:30:00 PM 10.846 0.389 239.621 1:45:00 AM 9.663 0.348 183.489 1:45:00 PM 10.922 0.414 258.591 2:00:00 AM 9.45 0.312 160.598 2:00:00 PM 10.949 0.668 418.247 2:15:00 AM 9.443 0.35 180.187 2:15:00 PM 10.869 0.564 350.257 2:30:00 AM 9.48 0.311 160.194 2:30:00 PM 10.819 0.56 340.639 2:45:00 AM 9.352 0.292 148.666 2:45:00 PM 10.802 0.553 340.146 3:00:00 AM 9.277 0.296 148.819 3:00:00 PM 10.846 0 229.848 3:15:00 AM 9.104 0.284 137.99 3:15:00 PM 10.892 0 231.13 3:30:00 AM 9.161 0 135.427 3:30:00 PM 10.806 0.018 246.913 3:45:00 AM 9.242 0.354 177.173 3:45:00 PM 10.734 0.018 245.169 4:00:00 AM 9.278 0.275 137.761 4:00:00 PM 10.784 0.448 275.024 4:15:00 AM 9.133 0.368 181.371 4:15:00 PM 10.844 0.309 190.596 4:30:00 AM 8.94 0.257 122.912 4:30:00 PM 10.817 0.457 276.67 4:45:00 AM 9.038 0.287 139.345 4:45:00 PM 11.029 0.585 369.692 5:00:00 AM 9.01 0.282 136.458 5:00:00 PM 10.923 0.394 246.348 5:15:00 AM 9.132 0.267 129.831 5:15:00 PM 10.79 0.363 223.34 5:30:00 AM 9.215 0.323 160.694 5:30:00 PM 10.888 0.547 332.938 5:45:00 AM 9.191 0.324 160.881 5:45:00 PM 10.867 0.59 360.007 6:00:00 AM 9.539 0.328 171.242 6:00:00 PM 11.017 0.625 394.801 6:15:00 AM 9.514 0.388 198.976 6:15:00 PM 11.106 0.551 344.014 6:30:00 AM 9.791 0.426 222.915 6:30:00 PM 11.314 0.413 267.678 6:45:00 AM 9.841 0.311 169.321 6:45:00 PM 11.313 0.639 417.678 7:00:00 AM 10.01 0.434 241.456 7:00:00 PM 11.233 0.388 251.18 7:15:00 AM 10.016 0.333 185.648 7:15:00 PM 11.212 0.408 263.525 7:30:00 AM 10.167 0.355 199.346 7:30:00 PM 11.163 0.404 259.759 7:45:00 AM 10.276 0.468 269.887 7:45:00 PM 11.237 0.584 376.314 8:00:00 AM 10.441 0.025 231.21 8:00:00 PM 11.316 0.456 374.922 8:15:00 AM 10.669 0 260.871 8:15:00 PM 11.404 0.639 421.043 8:30:00 AM 10.815 0.027 245.169 8:30:00 PM 11.497 0.523 349.129 8:45:00 AM 10.787 0.032 271.34 8:45:00 PM 11.447 0.411 271.01 9:00:00 AM 10.801 0.332 252.148 9:00:00 PM 11.584 0.408 274.629 9:15:00 AM 10.903 0.488 303.935 9:15:00 PM 11.573 0.697 468.567 9:30:00 AM 11.031 0.61 381.691 9:30:00 PM 11.65 0.418 468.708 9:45:00 AM 11.031 0.504 314.903 9:45:00 PM 11.651 0.714 483.119 10:00:00 AM 11.173 0.467 297.622 10:00:00 PM 11.609 0.429 289.946 10:15:00 AM 11.15 0.634 406.486 10:15:00 PM 11.649 0.346 289.348 10:30:00 AM 10.961 0.41 254.681 10:30:00 PM 11.689 0.206 203.294 10:45:00 AM 11.071 0.386 256.302 10:45:00 PM 11.543 0 138.329 11:00:00 AM 11.068 0.655 411.585 11:00:00 PM 11.359 0.359 235.894 11:15:00 AM 11.038 0.346 219.064 11:15:00 PM 11.195 0.342 220.701 11:30:00 AM 10.951 0.343 214.488 11:30:00 PM 11.079 0.602 382.778 11:45:00 AM 10.849 0.362 223.781 11:45:00 PM 10.835 0.525 319.984 Inches Feet/Sec GPM
Daily Avg: 10.584 0.389 263.763
Daily Min: 8.94 0 122.912
Daily Max: 11.689 0.714 483.119
Peak to Avg: 1.83
Thursday - A.M. 7/20/2023 Thursday - P.M. 7/20/2023
DRAFT
802
Project: City of Santa Paula - Sewer Flow Study
Location: 416 Dartmouth, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/21/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
803
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 416 Dartmouth
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 10.699 0.541 327.061 12:00:00 PM 11.132 0.595 380.133 12:15:00 AM 10.583 0.527 315.311 12:15:00 PM 11.081 0.631 401.615 12:30:00 AM 10.424 0.485 280.77 12:30:00 PM 11.176 0.63 405.196 12:45:00 AM 10.298 0.531 305.641 12:45:00 PM 11.298 0.64 410.405 1:00:00 AM 10.234 0.46 263.673 1:00:00 PM 11.359 0.648 425.767 1:15:00 AM 9.997 0.446 245.362 1:15:00 PM 11.28 0.352 228.943 1:30:00 AM 9.77 0.325 169.977 1:30:00 PM 11.194 0.557 356.481 1:45:00 AM 9.578 0.307 161.329 1:45:00 PM 11.012 0.657 414.625 2:00:00 AM 9.465 0.283 158.791 2:00:00 PM 11.14 0.404 255.6 2:15:00 AM 9.449 0 145.944 2:15:00 PM 11.219 0.384 246.761 2:30:00 AM 9.455 0.329 169.916 2:30:00 PM 11.085 0.616 391.937 2:45:00 AM 9.48 0.313 170.524 2:45:00 PM 11.316 0.45 294.498 3:00:00 AM 9.298 0.307 157.73 3:00:00 PM 11.31 0.396 255.303 3:15:00 AM 9.281 0.291 154.332 3:15:00 PM 11.138 0.5 319.592 3:30:00 AM 9.222 0.306 152.586 3:30:00 PM 11.106 0.586 373.917 3:45:00 AM 9.34 0.314 159.191 3:45:00 PM 11.155 0.603 385.179 4:00:00 AM 9.33 0.307 155.415 4:00:00 PM 11.105 0.377 237.77 4:15:00 AM 9.233 0 141.077 4:15:00 PM 11.181 0.443 285.1 4:30:00 AM 9.062 0 137.57 4:30:00 PM 11.127 0.372 237.744 4:45:00 AM 9.2 0.23 136.589 4:45:00 PM 11.055 0.575 363.832 5:00:00 AM 9.163 0 113.758 5:00:00 PM 11.207 0.388 248.522 5:15:00 AM 9.11 0 112.867 5:15:00 PM 11.239 0.6 383.396 5:30:00 AM 9.342 0.34 172.815 5:30:00 PM 11.202 0.603 384.432 5:45:00 AM 9.375 0.335 173.345 5:45:00 PM 11.146 0.43 272.544 6:00:00 AM 9.571 0.374 196.045 6:00:00 PM 11.135 0.398 253.524 6:15:00 AM 9.676 0.283 198.927 6:15:00 PM 11.135 0.503 321.08 6:30:00 AM 9.55 0.356 186.087 6:30:00 PM 11.104 0.49 312.272 6:45:00 AM 9.901 0.369 200.38 6:45:00 PM 11.208 0.429 274.683 7:00:00 AM 9.896 0.395 214.721 7:00:00 PM 11.22 0.601 388.549 7:15:00 AM 10.081 0.427 236.167 7:15:00 PM 11.117 0.602 379.057 7:30:00 AM 10.124 0.407 228.469 7:30:00 PM 11.114 0.649 412.62 7:45:00 AM 10.262 0.486 279.914 7:45:00 PM 11.237 0.622 403.017 8:00:00 AM 10.533 0.329 282.143 8:00:00 PM 11.223 0.334 215.986 8:15:00 AM 10.681 0.416 252.313 8:15:00 PM 11.288 0.418 271.247 8:30:00 AM 10.651 0.351 212.286 8:30:00 PM 11.296 0.388 253.007 8:45:00 AM 10.668 0.51 307.206 8:45:00 PM 11.405 0.405 265.341 9:00:00 AM 10.766 0.596 359.034 9:00:00 PM 11.403 0.382 252.021 9:15:00 AM 10.902 0.676 421.087 9:15:00 PM 11.307 0.517 337.073 9:30:00 AM 10.887 0.553 344.006 9:30:00 PM 11.315 0.339 220.776 9:45:00 AM 10.854 0.655 405.828 9:45:00 PM 11.369 0.437 286.429 10:00:00 AM 10.976 0.566 352.687 10:00:00 PM 11.361 0.666 437.486 10:15:00 AM 11.075 0.55 349.694 10:15:00 PM 11.28 0.653 420.775 10:30:00 AM 11.24 0.624 404.619 10:30:00 PM 11.105 0.601 383.328 10:45:00 AM 11.216 0.489 316.336 10:45:00 PM 11.088 0.583 371.225 11:00:00 AM 11.08 0.661 418.948 11:00:00 PM 11.02 0.578 365.427 11:15:00 AM 11.213 0.646 410.548 11:15:00 PM 10.975 0.586 368.29 11:30:00 AM 11.304 0.593 387.498 11:30:00 PM 10.903 0.626 390.232 11:45:00 AM 11.281 0.56 364.485 11:45:00 PM 10.827 0.503 310.744 Inches Feet/Sec GPM
Daily Avg: 10.640 0.453 287.762
Daily Min: 9.062 0 112.867
Daily Max: 11.405 0.676 437.486
Peak to Avg: 1.52
Friday - A.M. 7/21/2023 Friday - P.M. 7/21/2023
DRAFT
804
Project: City of Santa Paula - Sewer Flow Study
Location: 416 Dartmouth, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/22/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
805
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 416 Dartmouth
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 10.707 0.619 376.859 12:00:00 PM 11.802 0.653 450.64 12:15:00 AM 10.705 0.623 378.83 12:15:00 PM 11.771 0.472 323.713 12:30:00 AM 10.566 0.514 303.691 12:30:00 PM 11.867 0.434 300.368 12:45:00 AM 10.329 0.316 183.664 12:45:00 PM 11.91 0.823 573.74 1:00:00 AM 10.234 0.446 251.172 1:00:00 PM 11.922 0.452 316.114 1:15:00 AM 10.02 0.438 240.771 1:15:00 PM 11.89 0.398 272.455 1:30:00 AM 9.908 0.433 236.06 1:30:00 PM 11.666 0.293 270.936 1:45:00 AM 9.73 0.404 215.303 1:45:00 PM 11.593 0.507 341.943 2:00:00 AM 9.554 0.384 201.139 2:00:00 PM 11.59 0.494 332.884 2:15:00 AM 9.561 0.364 190.079 2:15:00 PM 11.708 0.467 319.397 2:30:00 AM 9.488 0.37 191.707 2:30:00 PM 11.759 0.411 280.231 2:45:00 AM 9.453 0.379 195.387 2:45:00 PM 11.669 0.535 363.836 3:00:00 AM 9.409 0.358 183.47 3:00:00 PM 11.56 0.789 529.511 3:15:00 AM 9.283 0.309 155.375 3:15:00 PM 11.517 0.738 493.945 3:30:00 AM 9.278 0.319 160.759 3:30:00 PM 11.517 0.411 493.962 3:45:00 AM 9.306 0.315 158.774 3:45:00 PM 11.476 0.465 309.374 4:00:00 AM 9.236 0.345 171.614 4:00:00 PM 11.515 0.65 433.944 4:15:00 AM 9.203 0.301 149.804 4:15:00 PM 11.456 0.693 460.045 4:30:00 AM 9.005 0.275 132.818 4:30:00 PM 11.49 0.507 335.216 4:45:00 AM 9.13 0.276 135.675 4:45:00 PM 11.522 0.662 436.134 5:00:00 AM 9.114 0.271 132.473 5:00:00 PM 11.305 0.688 449.219 5:15:00 AM 9.151 0.318 157.229 5:15:00 PM 11.136 0.395 253.252 5:30:00 AM 9.237 0.338 167.771 5:30:00 PM 11.214 0.408 263.545 5:45:00 AM 9.133 0.328 161.44 5:45:00 PM 11.299 0.621 397.572 6:00:00 AM 9.336 0.363 183.965 6:00:00 PM 11.386 0.631 411.829 6:15:00 AM 9.339 0.326 164.474 6:15:00 PM 11.32 0.57 367.614 6:30:00 AM 9.218 0.31 154.604 6:30:00 PM 11.267 0.689 446.799 6:45:00 AM 9.172 0.277 136.705 6:45:00 PM 11.277 0.431 280.261 7:00:00 AM 9.449 0.398 205.185 7:00:00 PM 11.249 0.62 402.337 7:15:00 AM 9.518 0.404 210.198 7:15:00 PM 11.123 0.474 303.062 7:30:00 AM 9.694 0.252 130.419 7:30:00 PM 11.285 0.73 470.032 7:45:00 AM 9.826 0.438 236.443 7:45:00 PM 11.229 0.539 345.056 8:00:00 AM 10.033 0.505 275.265 8:00:00 PM 11.043 0.672 419.319 8:15:00 AM 10.072 0.735 412.745 8:15:00 PM 11.058 0.379 240.006 8:30:00 AM 10.278 0.576 323.318 8:30:00 PM 11.084 0.402 255.71 8:45:00 AM 10.47 0.655 384.073 8:45:00 PM 11.112 0.377 240.425 9:00:00 AM 10.569 0.367 219.581 9:00:00 PM 11.24 0.417 269.479 9:15:00 AM 10.915 0.68 424.251 9:15:00 PM 11.044 0.382 239.314 9:30:00 AM 11.242 0.775 501.167 9:30:00 PM 11.108 0.644 411.42 9:45:00 AM 11.347 0.65 420.454 9:45:00 PM 11.228 0.741 479.334 10:00:00 AM 11.569 0.68 457.353 10:00:00 PM 11.195 0.631 404.698 10:15:00 AM 11.796 0.574 388.426 10:15:00 PM 11.068 0.709 450.5 10:30:00 AM 11.815 0.825 570.345 10:30:00 PM 11.175 0 385.39 10:45:00 AM 11.676 0.623 424.427 10:45:00 PM 11.156 0.457 293.27 11:00:00 AM 12.066 0.762 527.772 11:00:00 PM 11.077 0.527 334.896 11:15:00 AM 12.033 0.431 299.252 11:15:00 PM 10.952 0.584 366.107 11:30:00 AM 11.775 0.456 311.266 11:30:00 PM 10.791 0.496 304.227 11:45:00 AM 11.756 0.655 448.876 11:45:00 PM 10.72 0.303 302.156 Inches Feet/Sec GPM
Daily Avg: 10.740 0.490 312.535
Daily Min: 9.005 0 130.419
Daily Max: 12.066 0.825 573.74
Peak to Avg: 1.84
Saturday - A.M. 7/22/2023 Saturday - P.M. 7/22/2023
DRAFT
806
Project: City of Santa Paula - Sewer Flow Study
Location: 416 Dartmouth, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/23/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
807
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 416 Dartmouth
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 10.568 0.548 327.576 12:00:00 PM 11.67 0.838 567.821 12:15:00 AM 10.568 0.429 254.559 12:15:00 PM 11.656 0.765 517.351 12:30:00 AM 10.347 0.253 249.379 12:30:00 PM 11.535 0.768 514.977 12:45:00 AM 10.269 0.6 345.507 12:45:00 PM 11.848 0.378 261.641 1:00:00 AM 10.231 0.426 242.282 1:00:00 PM 11.929 0.359 251.328 1:15:00 AM 10.089 0.472 261.903 1:15:00 PM 11.617 0.435 294.497 1:30:00 AM 9.903 0.441 241.982 1:30:00 PM 11.604 0.677 451.163 1:45:00 AM 9.821 0.442 239.386 1:45:00 PM 11.416 0.568 374.245 2:00:00 AM 9.724 0.255 136.573 2:00:00 PM 11.415 0.411 271.9 2:15:00 AM 9.811 0.395 211.2 2:15:00 PM 11.429 0.48 317.636 2:30:00 AM 9.759 0.408 216.179 2:30:00 PM 11.361 0.827 539.333 2:45:00 AM 9.473 0.398 204.938 2:45:00 PM 11.293 0.668 433.4 3:00:00 AM 9.352 0.361 183.269 3:00:00 PM 11.26 0.387 251.659 3:15:00 AM 9.351 0.374 188.754 3:15:00 PM 11.214 0.029 223.869 3:30:00 AM 9.264 0.342 171.931 3:30:00 PM 11.126 0.251 235.422 3:45:00 AM 9.281 0.359 178.871 3:45:00 PM 11.175 0.366 235.209 4:00:00 AM 9.204 0.361 179.605 4:00:00 PM 11.199 0.636 410.646 4:15:00 AM 9.209 0.329 164.087 4:15:00 PM 11.249 0.512 383.144 4:30:00 AM 9.189 0.304 149.748 4:30:00 PM 11.234 0 301.893 4:45:00 AM 8.995 0.305 146.332 4:45:00 PM 10.994 0.466 293.252 5:00:00 AM 9.069 0.329 160.134 5:00:00 PM 11.128 0.576 368.769 5:15:00 AM 9.149 0.333 164.512 5:15:00 PM 11.056 0.413 262.258 5:30:00 AM 9.18 0.334 165.268 5:30:00 PM 11.04 0.429 271.22 5:45:00 AM 9.01 0.311 149.944 5:45:00 PM 10.993 0 251.43 6:00:00 AM 9.15 0.324 159.956 6:00:00 PM 10.987 0 251.245 6:15:00 AM 9.169 0.302 148.074 6:15:00 PM 11.095 0 254.465 6:30:00 AM 9.253 0.301 146.699 6:30:00 PM 11.095 0.053 254.303 6:45:00 AM 9.286 0.188 114.499 6:45:00 PM 11.036 0.343 235.422 7:00:00 AM 9.239 0.389 194.562 7:00:00 PM 11.233 0.362 233.149 7:15:00 AM 9.405 0.344 176.144 7:15:00 PM 11.201 0.335 214.802 7:30:00 AM 9.53 0.388 200.596 7:30:00 PM 11.17 0.663 421.186 7:45:00 AM 9.56 0.393 206.066 7:45:00 PM 11.221 0.376 242.365 8:00:00 AM 9.693 0.265 141.394 8:00:00 PM 11.231 0.382 247.355 8:15:00 AM 9.814 0.482 261.589 8:15:00 PM 11.165 0.389 247.731 8:30:00 AM 10.123 0.31 173.398 8:30:00 PM 11.088 0.36 229.157 8:45:00 AM 10.442 0.31 182.766 8:45:00 PM 11.323 0.731 478.106 9:00:00 AM 10.793 0.385 236.705 9:00:00 PM 11.545 0.681 453.628 9:15:00 AM 10.908 0.374 232.847 9:15:00 PM 11.547 0.37 247.154 9:30:00 AM 11.023 0.631 398.58 9:30:00 PM 11.527 0.688 458.041 9:45:00 AM 11.176 0.342 217.976 9:45:00 PM 11.492 0.58 386.023 10:00:00 AM 11.591 0.53 357.397 10:00:00 PM 11.566 0.728 488.191 10:15:00 AM 11.563 0.378 356.288 10:15:00 PM 11.542 0.392 263.202 10:30:00 AM 11.507 0.633 423.179 10:30:00 PM 11.608 0.403 272.048 10:45:00 AM 11.569 0.769 517.298 10:45:00 PM 11.627 0 272.617 11:00:00 AM 11.655 0.772 524.537 11:00:00 PM 11.448 0 267.231 11:15:00 AM 11.657 0.765 519.318 11:15:00 PM 11.235 0 260.836 11:30:00 AM 11.811 0.424 290.629 11:30:00 PM 11.083 0 256.266 11:45:00 AM 11.745 0.747 512.572 11:45:00 PM 10.938 0 251.908 Inches Feet/Sec GPM
Daily Avg: 10.688 0.404 281.788
Daily Min: 8.995 0 114.499
Daily Max: 11.929 0.838 567.821
Peak to Avg: 2.02
Sunday - A.M. 7/23/2023 Sunday - P.M. 7/23/2023
DRAFT
808
Project: City of Santa Paula - Sewer Flow Study
Location: 416 Dartmouth, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/24/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
809
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 416 Dartmouth
Time Level Velocity Velocity Time Level Velocity Flow
12:10:00 AM 10.697 0 244.707 12:00:00 PM 11.138 0.384 245.678 12:15:00 AM 10.53 0 239.71 12:15:00 PM 11.09 0.622 396.127 12:30:00 AM 10.424 0 236.543 12:30:00 PM 11.01 0.331 208.776 12:45:00 AM 10.304 0 232.94 12:45:00 PM 11.159 0.51 324.131 1:00:00 AM 10.174 0 229.066 1:00:00 PM 11.216 0.337 216.732 1:15:00 AM 10.003 0 223.99 1:15:00 PM 11.21 0.639 399.944 1:30:00 AM 9.689 0 214.691 1:30:00 PM 11.313 0.607 396.873 1:45:00 AM 9.619 0 212.617 1:45:00 PM 11.342 0.309 398.159 2:00:00 AM 9.465 0 208.078 2:00:00 PM 11.217 0.366 236.354 2:15:00 AM 9.566 0 211.072 2:15:00 PM 11.209 0.344 221.441 2:30:00 AM 9.604 0 212.176 2:30:00 PM 10.907 0.364 227.046 2:45:00 AM 9.413 0 206.544 2:45:00 PM 10.33 0.27 154.547 3:00:00 AM 9.344 0 204.519 3:00:00 PM 10.241 0.443 253.854 3:15:00 AM 9.183 0 199.803 3:15:00 PM 12.156 0.248 177.557 3:30:00 AM 9.166 0 199.307 3:30:00 PM 12.487 0.066 172.544 3:45:00 AM 9.237 0 201.387 3:45:00 PM 11.611 0 188.712
4:00:00 AM 9.197 0 200.219 4:00:00 PM 11.276 0 190.509
4:15:00 AM 9.018 0 194.98 4:15:00 PM 11.024 0 203.084
4:30:00 AM 9.077 0 196.702 4:30:00 PM 11.172 0 195.898
4:45:00 AM 9.06 0 196.22 4:45:00 PM 11.038 0.357 223.727 5:00:00 AM 9.173 0 199.517 5:00:00 PM 10.845 0.466 286.089 5:15:00 AM 9.237 0.164 201.399 5:15:00 PM 10.933 0.473 295.572 5:30:00 AM 9.187 0 81.59 5:30:00 PM 11.118 0.685 437.05 5:45:00 AM 9.387 0 83.981 5:45:00 PM 11.217 0.517 334.524 6:00:00 AM 9.459 0 84.853 6:00:00 PM 11.229 0.44 284.976 6:15:00 AM 9.544 0 85.869 6:15:00 PM 11.226 0.508 328.332 6:30:00 AM 9.674 0 87.437 6:30:00 PM 11.397 0.532 350.753 6:45:00 AM 9.761 0 88.482 6:45:00 PM 11.381 0.586 384.797 7:00:00 AM 9.74 0 88.226 7:00:00 PM 11.335 0.518 336.344 7:15:00 AM 10.066 0 92.173 7:15:00 PM 11.47 0.438 291.576 7:30:00 AM 10.288 0 94.877 7:30:00 PM 11.654 0.491 331.287 7:45:00 AM 10.234 0 94.216 7:45:00 PM 11.602 0 226.122
8:00:00 AM 10.572 0 98.338 8:00:00 PM 11.725 0.505 345.375 8:15:00 AM 10.612 0 98.827 8:15:00 PM 11.786 0.618 425.848 8:30:00 AM 10.765 0 100.696 8:30:00 PM 11.824 0.427 427.564 8:45:00 AM 10.817 0.35 215.917 8:45:00 PM 11.966 0.455 319.237 9:00:00 AM 10.848 0 207.029 9:00:00 PM 11.808 0.42 289.76 9:15:00 AM 11.079 0 212.804 9:15:00 PM 11.827 0.375 257.88 9:30:00 AM 11.115 0 213.694 9:30:00 PM 11.824 0 154.073 9:45:00 AM 11.176 0 215.225 9:45:00 PM 11.723 0.522 357.073 10:00:00 AM 11.185 0 215.437 10:00:00 PM 11.859 0.484 335.972 10:15:00 AM 11.207 0 215.982 10:15:00 PM 11.833 0 335.034 10:30:00 AM 11.169 0.034 208.474 10:30:00 PM 11.689 0.274 186.743 10:45:00 AM 11.069 0.368 233.876 10:45:00 PM 11.704 0.321 218.296 11:00:00 AM 11.106 0.717 453.845 11:00:00 PM 11.667 0.381 257.696 11:15:00 AM 11.073 0.294 185.051 11:15:00 PM 11.512 0 253.027 11:30:00 AM 11.22 0.402 260.141 11:30:00 PM 11.343 0.265 173.904 11:45:00 AM 11.089 0.372 236.901 11:45:00 PM 11.146 0 170.02 Inches Feet/Sec GPM
Daily Avg: 10.744 0.206 232.653
Daily Min: 9.018 0 81.59
Daily Max: 12.487 0.717 453.845
Peak to Avg: 1.95
Monday - A.M. 7/24/2023 Monday - P.M. 7/24/2023
DRAFT
810
Sewer Line Flow Study Summary
Maximum Level Maximum Velocity Maximum Flow Rate
Average:

Maximum:

Minimum:

0.258

0.838

0.194
Velocity - Feet per Second
Average:

Maximum:

Minimum:

Max d/D:

10.757

12.487

8.904

52.0%
Level - Inches
Average:

Maximum::

Minimum:

Peak to Average
228.388
573.740

73.413

1.70 Flow Rate - Gallons Per Minute
Project: City of Santa Paula - Sewer Flow Study
Location: 416 Dartmouth, Santa Paula, CA
Pipe Size: 24” VCP
Time Period: 7/11/2023, 12:00 a.m. - 7/25/2023, 12:00 a.m.

DRAFT
811
1868 Palma Drive, Suite I, Ventura, CA 93003 www.goldcoastenv.com 805.498.3811 ph.

Manhole - Layout

CITY OF SANTA PAULA - SEWER FLOW STUDY
MH Location: 224 S. Palm Ave.

Santa Paula, CA 93060

Pipe Size: 15” VCP
Time Period: 7/11/2023 - 12:00 a.m. to
7/25/2023- 12:00 a.m.

GPS: 34.347765, -119.070200
Equipment
N
 This is a very shallow manhole, top of the VCP line
is not fully opened, a special spring ring was required to install the meter inside of this line.

Manhole
E
Gold G C Coast Environmental
E Specializing in process instrumentation and calibration.

G C
Teledyne Isco 2150 Area Velocity Flow Meter with 10’
measuring range:

1.5 to +1.5 m/s)
 ±2% of reading from 5 to 20 ft/s (1.5 to 6.1 m/s)
Method Of Insertion:
 15 inch line did not require Confined Space Entry.

Flow
DRAFT
812
Project: City of Santa Paula - Sewer Flow Study
Location: 224 S. Palm, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/11/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
813
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 224 S. Palm
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 PM 6.912 0.918 223.882
12:15:00 AM 6.129 0 0 12:15:00 PM 7.016 0.87 217.385
12:30:00 AM 5.972 0.654 133.776 12:30:00 PM 7.217 1.024 268.509 12:45:00 AM 5.902 0.627 126.011 12:45:00 PM 7.111 0.925 230.476 1:00:00 AM 5.736 0.569 110.265 1:00:00 PM 6.964 0.936 228.964 1:15:00 AM 5.533 0.525 96.839 1:15:00 PM 7.013 0.893 225.676 1:30:00 AM 5.551 0.46 85.299 1:30:00 PM 6.87 0.873 214.799 1:45:00 AM 5.518 0.433 79.378 1:45:00 PM 6.94 0.961 239.509 2:00:00 AM 5.473 0.464 84.43 2:00:00 PM 6.919 0.923 225.227 2:15:00 AM 5.398 0.4 71.144 2:15:00 PM 6.806 0.859 208.814 2:30:00 AM 5.426 0.449 80.336 2:30:00 PM 6.757 0.843 202.249 2:45:00 AM 5.448 0.448 80.332 2:45:00 PM 6.982 0.954 239.733 3:00:00 AM 5.412 0.455 81.402 3:00:00 PM 6.881 0.866 210.973 3:15:00 AM 5.376 0.458 81.242 3:15:00 PM 7.013 0.899 222.758 3:30:00 AM 5.374 0.438 77.732 3:30:00 PM 6.978 0.928 230.863 3:45:00 AM 5.308 0.412 71.675 3:45:00 PM 7.04 0.922 226.783 4:00:00 AM 5.374 0.41 72.758 4:00:00 PM 6.955 0.919 229.609 4:15:00 AM 5.285 0.437 75.718 4:15:00 PM 6.877 0.918 225.108 4:30:00 AM 5.725 0.579 111.905 4:30:00 PM 7.049 0.981 249.531 4:45:00 AM 5.624 0.517 97.557 4:45:00 PM 7.057 0.917 229.938 5:00:00 AM 5.821 0.609 120.274 5:00:00 PM 7.129 0.884 228.185 5:15:00 AM 5.857 0.615 122.047 5:15:00 PM 7.194 0.991 258.857 5:30:00 AM 6.054 0.664 138.335 5:30:00 PM 7.037 0.932 234.978 5:45:00 AM 6.114 0.666 140.414 5:45:00 PM 7.25 0.994 261.801 6:00:00 AM 6.105 0.572 119.231 6:00:00 PM 7.07 0.855 218.135 6:15:00 AM 6.46 0.749 166.732 6:15:00 PM 7.271 1.007 266.313 6:30:00 AM 6.685 0.826 190.249 6:30:00 PM 7.281 1 265.151 6:45:00 AM 6.702 0.906 215.71 6:45:00 PM 7.245 1.05 272.794 7:00:00 AM 7.008 0.888 224.237 7:00:00 PM 7.475 1.06 290.696 7:15:00 AM 7.147 0.906 232.467 7:15:00 PM 7.348 1.014 272.067 7:30:00 AM 7.028 0.861 218.19 7:30:00 PM 7.37 0.955 252.058 7:45:00 AM 7.045 0.927 234.658 7:45:00 PM 7.46 0.956 261.477 8:00:00 AM 7.172 0.97 249.226 8:00:00 PM 7.329 1.056 281.756 8:15:00 AM 7.127 0.981 251.751 8:15:00 PM 7.363 0.997 265.869 8:30:00 AM 7.188 0.954 248.92 8:30:00 PM 7.461 1.005 265.666 8:45:00 AM 7.039 0.905 224.595 8:45:00 PM 7.363 0.995 266.421 9:00:00 AM 7.067 0.925 236.087 9:00:00 PM 7.464 1.025 278.616 9:15:00 AM 6.898 0.861 213.012 9:15:00 PM 7.685 0.926 260.758 9:30:00 AM 7.071 0.969 241.544 9:30:00 PM 7.72 1.074 306.682 9:45:00 AM 6.975 0.9 217.589 9:45:00 PM 7.721 1.076 307.546 10:00:00 AM 6.933 0.925 230.365 10:00:00 PM 7.453 0.984 267.989 10:15:00 AM 7.007 0.871 219.704 10:15:00 PM 7.168 1.03 267.694 10:30:00 AM 7.192 0.925 229.825 10:30:00 PM 7.086 0.936 236.752 10:45:00 AM 7.203 1 261.612 10:45:00 PM 6.975 0.878 220.356 11:00:00 AM 7.141 0.903 231.434 11:00:00 PM 6.813 0.873 207.581 11:15:00 AM 6.801 0.903 218.507 11:15:00 PM 6.653 0.827 194.995 11:30:00 AM 7.223 0.935 239.633 11:30:00 PM 6.441 0.795 179.633 11:45:00 AM 7.03 0.941 238.623 11:45:00 PM 6.368 0.751 167.312 Inches Feet/Sec GPM
Daily Avg: 6.718 0.822 201.070
Daily Min: 5.285 0 0
Daily Max: 7.721 1.076 307.546
Peak to Avg: 1.53
Tuesday- A.M. 7/11/2023 Tuesday- P.M. 7/11/2023
DRAFT
814
Project: City of Santa Paula - Sewer Flow Study
Location: 224 S. Palm, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/12/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
815
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 224 S. Palm
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 6.201 0.724 153.448 12:00:00 PM 6.638 0.783 178.56 12:15:00 AM 6.14 0.712 149.048 12:15:00 PM 6.717 0.913 217.571 12:30:00 AM 6.043 0.736 152.973 12:30:00 PM 6.653 0.778 183.382 12:45:00 AM 5.787 0.6 117.546 12:45:00 PM 6.475 0.725 164.208 1:00:00 AM 5.738 0.417 80.737 1:00:00 PM 6.488 0.741 169.077 1:15:00 AM 5.687 0.607 116.151 1:15:00 PM 6.73 0.854 204.556 1:30:00 AM 5.504 0.482 87.292 1:30:00 PM 6.631 0.801 182.976 1:45:00 AM 5.535 0.547 101.051 1:45:00 PM 6.568 0.747 171.13 2:00:00 AM 5.412 0.4 71.655 2:00:00 PM 6.596 0.843 194.916 2:15:00 AM 5.219 0.397 67.656 2:15:00 PM 6.619 0.761 178.354 2:30:00 AM 5.28 0.41 70.956 2:30:00 PM 6.521 0.758 169.743 2:45:00 AM 5.302 0.426 73.419 2:45:00 PM 6.485 0.814 185.599 3:00:00 AM 5.298 0.408 70.965 3:00:00 PM 6.596 0.769 175.444 3:15:00 AM 5.222 0.407 69.449 3:15:00 PM 6.51 0.775 176.371 3:30:00 AM 5.263 0.425 72.922 3:30:00 PM 6.468 0.787 176.716 3:45:00 AM 5.237 0.401 68.06 3:45:00 PM 6.771 0.852 198.218 4:00:00 AM 5.204 0.321 53.885 4:00:00 PM 6.492 0.863 197.038 4:15:00 AM 5.275 0.344 59.362 4:15:00 PM 6.475 0.796 178.353 4:30:00 AM 5.291 0.407 70.691 4:30:00 PM 6.689 0.808 187.203 4:45:00 AM 5.424 0.43 77.227 4:45:00 PM 6.734 0.709 166.941 5:00:00 AM 5.663 0.494 94.141 5:00:00 PM 6.921 0.961 238.564 5:15:00 AM 5.887 0.614 123.092 5:15:00 PM 6.817 0.837 203.779 5:30:00 AM 5.898 0.634 127.401 5:30:00 PM 6.881 0.783 188.012 5:45:00 AM 6.182 0.6 125.935 5:45:00 PM 6.88 0.93 229.106 6:00:00 AM 6.563 0.769 177.434 6:00:00 PM 6.799 0.83 200.057 6:15:00 AM 6.438 0.755 170.475 6:15:00 PM 6.781 0.865 207.122 6:30:00 AM 6.731 0.843 201.108 6:30:00 PM 6.99 1.032 259.715 6:45:00 AM 6.78 0.792 191.426 6:45:00 PM 7.126 0.913 235.415 7:00:00 AM 6.959 0.855 211.363 7:00:00 PM 7.019 0.898 227.075 7:15:00 AM 6.95 0.888 220.603 7:15:00 PM 6.961 0.9 225.138 7:30:00 AM 7.236 0.945 248.607 7:30:00 PM 7.135 0.969 250.334 7:45:00 AM 6.596 0.848 194.717 7:45:00 PM 7.251 0.939 247.769 8:00:00 AM 6.401 0.649 145.454 8:00:00 PM 7.076 0.882 221.891 8:15:00 AM 6.198 0.733 157.427 8:15:00 PM 7.033 0.942 236.848 8:30:00 AM 6.356 0.771 171.267 8:30:00 PM 7.056 0.931 237.104 8:45:00 AM 6.546 0.745 162.888 8:45:00 PM 7.116 0.971 246.043 9:00:00 AM 6.666 0.855 202.083 9:00:00 PM 7.363 1.055 283.725 9:15:00 AM 6.92 0.859 213.373 9:15:00 PM 7.224 1.029 269.394 9:30:00 AM 6.812 0.877 213.362 9:30:00 PM 7.236 0.933 241.017 9:45:00 AM 6.694 0.783 178.437 9:45:00 PM 7.285 0.94 247.551 10:00:00 AM 6.805 0.802 191.08 10:00:00 PM 7.147 0.971 251.295 10:15:00 AM 7.342 0.868 232.563 10:15:00 PM 7.122 0.91 234.498 10:30:00 AM 7.473 0.963 264.026 10:30:00 PM 7.069 0.879 213.072 10:45:00 AM 6.624 0.703 160.723 10:45:00 PM 6.983 0.91 228.531 11:00:00 AM 6.642 0.838 197.256 11:00:00 PM 6.726 0.838 200.401 11:15:00 AM 6.723 0.835 198.306 11:15:00 PM 6.515 0.793 181.852 11:30:00 AM 6.619 0.747 173.973 11:30:00 PM 6.63 0.875 205.425 11:45:00 AM 6.661 0.788 185.673 11:45:00 PM 6.438 0.818 183.61 Inches Feet/Sec GPM
Daily Avg: 6.491 0.759 177.010
Daily Min: 5.204 0.321 53.885
Daily Max: 7.473 1.055 283.725
Peak to Avg: 1.60
Wednesday - A.M. 7/12/2023 Wednesday - P.M. 7/12/2023
DRAFT
816
Project: City of Santa Paula - Sewer Flow Study
Location: 224 S. Palm, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/13/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
817
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 224 S. Palm
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 6.326 0.781 169.149 12:00:00 PM 6.759 0.823 198.174 12:15:00 AM 6.161 0.703 149.807 12:15:00 PM 6.719 0.811 191.121 12:30:00 AM 6.099 0.652 137.209 12:30:00 PM 6.873 0.797 195.522 12:45:00 AM 5.873 0.596 118.661 12:45:00 PM 6.911 0.844 209.271 1:00:00 AM 5.786 0.576 112.03 1:00:00 PM 6.918 0.893 221.7 1:15:00 AM 5.745 0.626 121.472 1:15:00 PM 6.753 0.861 207.211 1:30:00 AM 5.666 0.53 101.012 1:30:00 PM 6.626 0.761 177.354 1:45:00 AM 5.549 0.522 96.251 1:45:00 PM 6.605 0.832 194.501 2:00:00 AM 5.45 0.45 81.254 2:00:00 PM 6.662 0.828 195.544 2:15:00 AM 5.44 0.493 88.675 2:15:00 PM 6.699 0.831 196.077 2:30:00 AM 5.333 0.425 74.604 2:30:00 PM 6.729 0.815 195.033 2:45:00 AM 5.295 0.409 70.732 2:45:00 PM 6.729 0.852 202.232 3:00:00 AM 5.365 0.432 76.39 3:00:00 PM 6.909 0.89 218.277 3:15:00 AM 5.396 0.477 84.396 3:15:00 PM 6.833 0.872 210.337 3:30:00 AM 5.429 0.505 90.882 3:30:00 PM 6.767 0.902 216.979 3:45:00 AM 5.32 0.46 80.445 3:45:00 PM 6.737 0.914 219.121 4:00:00 AM 5.498 0.478 87.373 4:00:00 PM 6.821 0.823 200.51 4:15:00 AM 5.367 0.453 80.286 4:15:00 PM 6.999 0.914 224.589 4:30:00 AM 5.38 0.446 79.167 4:30:00 PM 6.908 0.945 234.103 4:45:00 AM 5.464 0.486 88.119 4:45:00 PM 7.049 0.884 224.473 5:00:00 AM 5.61 0.535 100.505 5:00:00 PM 7.101 0.9 228.312 5:15:00 AM 5.724 0.52 100.511 5:15:00 PM 6.91 0.89 219.798 5:30:00 AM 5.807 0.621 122.334 5:30:00 PM 6.889 0.861 211.838 5:45:00 AM 5.954 0.707 143.948 5:45:00 PM 7.001 0.914 230.278 6:00:00 AM 5.97 0.652 130.53 6:00:00 PM 7.099 0.9 229.797 6:15:00 AM 6.092 0.676 138.483 6:15:00 PM 7.152 0.93 239.162 6:30:00 AM 6.238 0.768 166.507 6:30:00 PM 7.277 0.996 263.91 6:45:00 AM 6.551 0.728 168.205 6:45:00 PM 7.108 0.961 246.36 7:00:00 AM 6.565 0.801 183.53 7:00:00 PM 7.197 0.92 240.362 7:15:00 AM 6.414 0.849 190.782 7:15:00 PM 7.351 0.96 250.014 7:30:00 AM 6.699 0.858 203.396 7:30:00 PM 7.119 0.893 229.897 7:45:00 AM 6.73 0.913 218.672 7:45:00 PM 7.326 1.024 273.501 8:00:00 AM 6.788 0.861 204.739 8:00:00 PM 7.334 0.937 248.154 8:15:00 AM 6.89 0.912 225.285 8:15:00 PM 7.353 1.03 274.889 8:30:00 AM 6.891 0.889 217.24 8:30:00 PM 7.351 0.976 257.081 8:45:00 AM 6.75 0.855 202.595 8:45:00 PM 7.311 0.926 246.93 9:00:00 AM 6.844 0.97 237.442 9:00:00 PM 7.462 0.958 262.19 9:15:00 AM 6.858 0.856 208.565 9:15:00 PM 7.659 1.113 314.718 9:30:00 AM 6.913 0.957 236.532 9:30:00 PM 7.722 0.984 278.427 9:45:00 AM 6.779 0.862 205.611 9:45:00 PM 7.604 1.021 281.535 10:00:00 AM 6.704 0.886 211.006 10:00:00 PM 7.502 0.988 272.291 10:15:00 AM 6.832 0.927 220.859 10:15:00 PM 7.356 0.945 251.856 10:30:00 AM 6.831 0.768 182.661 10:30:00 PM 7.402 1.028 274.952 10:45:00 AM 6.856 0.9 220.705 10:45:00 PM 7.419 1.048 284.643 11:00:00 AM 6.816 0.837 199.856 11:00:00 PM 6.986 0.898 222.373 11:15:00 AM 6.759 0.892 214.755 11:15:00 PM 7.146 0.898 232.483 11:30:00 AM 6.75 0.822 195.234 11:30:00 PM 6.862 0.826 201.946 11:45:00 AM 6.79 0.901 218.193 11:45:00 PM 6.707 0.826 195.659 Inches Feet/Sec GPM
Daily Avg: 6.608 0.801 191.399
Daily Min: 5.295 0.409 70.732
Daily Max: 7.722 1.113 314.718
Peak to Avg: 1.64
Thursday - A.M. 7/13/2023 Thursday - P.M. 7/13/2023
DRAFT
818
Project: City of Santa Paula - Sewer Flow Study
Location: 224 S. Palm, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/14/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
819
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 224 S. Palm
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 6.677 0.867 205.407 12:00:00 PM 6.932 0.923 229.721 12:15:00 AM 6.554 0.77 175.321 12:15:00 PM 6.973 0.837 209.84 12:30:00 AM 6.522 0.694 159.566 12:30:00 PM 6.931 0.855 203.255 12:45:00 AM 6.329 0.654 144.536 12:45:00 PM 6.87 0.921 226.292 1:00:00 AM 6.18 0.71 151.542 1:00:00 PM 6.837 0.86 210.227 1:15:00 AM 6.11 0.597 125.846 1:15:00 PM 6.685 0.782 184.138 1:30:00 AM 6.024 0.62 128.289 1:30:00 PM 6.714 0.862 205.79 1:45:00 AM 6.003 0.577 116.151 1:45:00 PM 6.674 0.905 211.778 2:00:00 AM 5.851 0.499 97.556 2:00:00 PM 6.578 0.84 195.224 2:15:00 AM 5.952 0.589 118.907 2:15:00 PM 6.566 0.832 190.418 2:30:00 AM 5.799 0.534 102.426 2:30:00 PM 6.601 0.869 202.545 2:45:00 AM 5.73 0.524 100.234 2:45:00 PM 6.597 0.815 190.058 3:00:00 AM 5.6 0.513 95.42 3:00:00 PM 6.827 0.813 198.465 3:15:00 AM 5.798 0.531 104.284 3:15:00 PM 6.933 0.898 223.585 3:30:00 AM 5.689 0.539 101.484 3:30:00 PM 6.6 0.851 198.733 3:45:00 AM 5.656 0.536 101.607 3:45:00 PM 6.508 0.756 173.156 4:00:00 AM 5.472 0.426 77.462 4:00:00 PM 6.546 0.862 198.95 4:15:00 AM 5.562 0.479 89.026 4:15:00 PM 6.818 0.797 190.026 4:30:00 AM 5.671 0.515 97.559 4:30:00 PM 6.883 0.907 220.509 4:45:00 AM 5.662 0.46 87.47 4:45:00 PM 6.899 0.942 231.677 5:00:00 AM 5.737 0.56 108.547 5:00:00 PM 6.841 0.921 225.219 5:15:00 AM 5.853 0.514 100.607 5:15:00 PM 7.098 0.903 231.361 5:30:00 AM 5.97 0.629 128.622 5:30:00 PM 6.824 0.905 220.56 5:45:00 AM 6.097 0.6 126.141 5:45:00 PM 6.952 0.849 212.034 6:00:00 AM 6.141 0.686 142.428 6:00:00 PM 6.862 0.851 206.956 6:15:00 AM 6.507 0.763 174.05 6:15:00 PM 6.955 0.93 232.39 6:30:00 AM 6.534 0.798 183.904 6:30:00 PM 6.87 0.825 202.355 6:45:00 AM 6.734 0.803 192.52 6:45:00 PM 6.875 0.887 218.316 7:00:00 AM 6.783 0.827 200.125 7:00:00 PM 7.014 0.926 227.203 7:15:00 AM 6.81 0.883 214.715 7:15:00 PM 6.91 1.012 250.817 7:30:00 AM 6.859 0.869 212.374 7:30:00 PM 6.765 0.957 230.641 7:45:00 AM 6.896 0.852 210.509 7:45:00 PM 6.789 0.944 228.656 8:00:00 AM 7.138 0.953 242.397 8:00:00 PM 6.831 0.876 210.065 8:15:00 AM 7.106 1.004 257.351 8:15:00 PM 6.876 0.899 221.43 8:30:00 AM 7.02 0.866 217.014 8:30:00 PM 6.805 0.895 217.444 8:45:00 AM 6.929 0.894 222.239 8:45:00 PM 6.645 0.928 218.533 9:00:00 AM 7.031 0.955 237.094 9:00:00 PM 6.873 0.928 225.3 9:15:00 AM 6.967 0.901 224.249 9:15:00 PM 6.733 0.889 212.134 9:30:00 AM 7.027 0.9 227.909 9:30:00 PM 6.767 0.839 198.975 9:45:00 AM 7.137 0.91 235.186 9:45:00 PM 6.842 0.97 234.164 10:00:00 AM 7.101 0.89 228.545 10:00:00 PM 6.794 0.942 223.4 10:15:00 AM 7.096 0.97 248.774 10:15:00 PM 7.072 0.88 224.83 10:30:00 AM 6.991 0.96 241.492 10:30:00 PM 6.909 0.908 225.092 10:45:00 AM 7.131 0.956 243.087 10:45:00 PM 6.615 0.88 205.945 11:00:00 AM 7.027 0.948 234.473 11:00:00 PM 6.635 0.916 215.228 11:15:00 AM 6.866 0.911 223.955 11:15:00 PM 6.53 0.81 183.121 11:30:00 AM 6.847 0.864 211.608 11:30:00 PM 6.353 0.761 167.792 11:45:00 AM 6.868 0.877 211.089 11:45:00 PM 6.299 0.758 166.425 Inches Feet/Sec GPM
Daily Avg: 6.597 0.804 189.542
Daily Min: 5.472 0.426 77.462
Daily Max: 7.138 1.012 257.351
Peak to Avg: 1.36
Friday - A.M. 7/14/2023 Friday - P.M. 7/14/2023
DRAFT
820
Project: City of Santa Paula - Sewer Flow Study
Location: 224 S. Palm, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/15/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
821
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 224 S. Palm
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 6.24 0.699 151.565 12:00:00 PM 9.396 1.298 471.466 12:15:00 AM 6.233 0.797 172.425 12:15:00 PM 8.863 1.371 464.305 12:30:00 AM 6.006 0.632 130.182 12:30:00 PM 7.509 0.825 227.643 12:45:00 AM 5.895 0.544 105.238 12:45:00 PM 7.272 0.968 254.357 1:00:00 AM 5.72 0.598 114.874 1:00:00 PM 7.637 0.964 270.347 1:15:00 AM 5.691 0.527 100.92 1:15:00 PM 7.516 0.965 262.594 1:30:00 AM 5.587 0.562 104.02 1:30:00 PM 7.55 1.032 286.73 1:45:00 AM 5.546 0.52 96.262 1:45:00 PM 7.548 1.017 282.403 2:00:00 AM 5.532 0.557 102.78 2:00:00 PM 7.201 0.919 240.193 2:15:00 AM 5.464 0.509 92.352 2:15:00 PM 7.186 1.006 261.913 2:30:00 AM 5.479 0.437 78.061 2:30:00 PM 7.564 1.071 298.135 2:45:00 AM 5.41 0.524 93.224 2:45:00 PM 7.557 1.005 270.325 3:00:00 AM 5.394 0.466 82.816 3:00:00 PM 7.329 1.018 272.017 3:15:00 AM 5.447 0.477 86.177 3:15:00 PM 7.335 0.983 263.177 3:30:00 AM 5.391 0.441 78.558 3:30:00 PM 7.418 1.015 272.95 3:45:00 AM 5.368 0.477 84.545 3:45:00 PM 7.245 1.038 273.57 4:00:00 AM 5.377 0.474 84.061 4:00:00 PM 7.277 1.037 274.649 4:15:00 AM 5.399 0.431 76.401 4:15:00 PM 7.146 1.047 269.573 4:30:00 AM 5.409 0.431 76.606 4:30:00 PM 7.086 0.903 227.525 4:45:00 AM 5.385 0.447 79.437 4:45:00 PM 6.991 0.893 224.828 5:00:00 AM 5.431 0.465 82.652 5:00:00 PM 7.041 0.828 207.763 5:15:00 AM 5.51 0.49 89.851 5:15:00 PM 7.006 0.936 230.272 5:30:00 AM 5.534 0.506 93.37 5:30:00 PM 7.092 0.979 245.917 5:45:00 AM 5.592 0.553 101.901 5:45:00 PM 6.881 0.896 220.897 6:00:00 AM 5.596 0.521 97.615 6:00:00 PM 7.093 1 255.107 6:15:00 AM 5.778 0.627 122.585 6:15:00 PM 6.982 0.86 215.731 6:30:00 AM 5.852 0.616 120.943 6:30:00 PM 7.093 0.956 243.559 6:45:00 AM 5.778 0.603 117.949 6:45:00 PM 7.071 0.982 250.657 7:00:00 AM 5.822 0.578 114.177 7:00:00 PM 6.938 0.937 233.457 7:15:00 AM 5.967 0.7 142.9 7:15:00 PM 6.732 0.905 216.736 7:30:00 AM 6.111 0.679 143.209 7:30:00 PM 6.89 0.888 219.007 7:45:00 AM 6.265 0.738 160.46 7:45:00 PM 6.943 0.879 219.136 8:00:00 AM 6.542 0.744 160.989 8:00:00 PM 7.041 0.971 242.972 8:15:00 AM 6.612 0.867 199.783 8:15:00 PM 6.955 0.879 218.373 8:30:00 AM 6.64 0.819 189.04 8:30:00 PM 7.024 0.865 218.95 8:45:00 AM 6.9 1.016 251.452 8:45:00 PM 7.064 0.89 225.492 9:00:00 AM 6.808 0.938 228.132 9:00:00 PM 7.236 0.998 260.2 9:15:00 AM 6.837 0.885 213.187 9:15:00 PM 7.27 0.977 258.496 9:30:00 AM 7.033 1.019 257.702 9:30:00 PM 7.156 0.911 236.245 9:45:00 AM 7.197 0.956 249.626 9:45:00 PM 7.216 0.937 242.225 10:00:00 AM 7.016 0.862 212.781 10:00:00 PM 7.158 0.983 253.022 10:15:00 AM 7.182 0.985 256.738 10:15:00 PM 7.011 0.934 234.554 10:30:00 AM 7.018 0.895 226.424 10:30:00 PM 6.915 0.879 217.351 10:45:00 AM 7.467 1.01 276.361 10:45:00 PM 6.909 0.862 206.58 11:00:00 AM 7.364 0.966 259.897 11:00:00 PM 6.792 0.969 234.706 11:15:00 AM 6.991 0.947 236.838 11:15:00 PM 6.803 0.881 213.842 11:30:00 AM 6.941 0.903 224.334 11:30:00 PM 6.743 0.872 209.382 11:45:00 AM 9.657 1.165 436.863 11:45:00 PM 6.615 0.886 207.333 Inches Feet/Sec GPM
Daily Avg: 6.689 0.821 202.246
Daily Min: 5.368 0.431 76.401
Daily Max: 9.657 1.371 471.466
Peak to Avg: 2.33
Saturday - A.M. 7/15/2023 Saturday - P.M. 7/15/2023
DRAFT
822
Project: City of Santa Paula - Sewer Flow Study
Location: 224 S. Palm, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/16/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
823
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 224 S. Palm
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 6.558 0.763 176.515 12:00:00 PM 7.838 1.069 309.653 12:15:00 AM 6.467 0.736 167.343 12:15:00 PM 7.811 1.031 298.86 12:30:00 AM 6.258 0.744 160.279 12:30:00 PM 7.678 1.061 300.683 12:45:00 AM 6.143 0.772 163.834 12:45:00 PM 7.648 0.981 276.906 1:00:00 AM 6.027 0.63 128.944 1:00:00 PM 7.667 1.049 296.987 1:15:00 AM 5.909 0.665 133.615 1:15:00 PM 7.465 0.981 268.699 1:30:00 AM 5.708 0.531 102.198 1:30:00 PM 7.406 0.91 246.546 1:45:00 AM 5.773 0.548 107.058 1:45:00 PM 7.423 1.082 292.385 2:00:00 AM 5.702 0.502 96.535 2:00:00 PM 7.679 0.958 263.137 2:15:00 AM 5.695 0.514 97.81 2:15:00 PM 7.441 0.945 253.105 2:30:00 AM 5.466 0.428 75.17 2:30:00 PM 7.343 0.966 257.921 2:45:00 AM 5.367 0.41 72.57 2:45:00 PM 7.353 0.991 264.097 3:00:00 AM 5.353 0.392 69.191 3:00:00 PM 7.447 1.02 276.846 3:15:00 AM 5.311 0.393 68.548 3:15:00 PM 7.48 0.986 270.632 3:30:00 AM 5.488 0.549 100.108 3:30:00 PM 7.129 0.895 226.501 3:45:00 AM 5.462 0.44 79.811 3:45:00 PM 7.119 0.911 234.669 4:00:00 AM 5.294 0.363 63.16 4:00:00 PM 7.213 1.043 273.31 4:15:00 AM 5.23 0.344 58.126 4:15:00 PM 7.039 0.961 243.689 4:30:00 AM 5.306 0.419 72.693 4:30:00 PM 7.028 0.936 233.964 4:45:00 AM 5.371 0.453 79.693 4:45:00 PM 7.08 0.885 225.991 5:00:00 AM 5.361 0.416 72.834 5:00:00 PM 7.275 0.98 259.645 5:15:00 AM 5.428 0.473 85.072 5:15:00 PM 7.223 0.97 254.618 5:30:00 AM 5.518 0.44 79.495 5:30:00 PM 7.282 0.905 240.118 5:45:00 AM 5.518 0.42 76.936 5:45:00 PM 7.307 0.975 257.054 6:00:00 AM 5.629 0.465 86.356 6:00:00 PM 7.326 1.013 270.077 6:15:00 AM 5.774 0.489 94.523 6:15:00 PM 7.383 0.932 251.569 6:30:00 AM 5.814 0.524 103.314 6:30:00 PM 7.26 0.926 240.304 6:45:00 AM 5.986 0.613 125.746 6:45:00 PM 7.307 0.944 249.913 7:00:00 AM 6.206 0.725 156.05 7:00:00 PM 7.382 0.954 257.45 7:15:00 AM 6.335 0.679 149.639 7:15:00 PM 7.348 0.969 259.246 7:30:00 AM 6.488 0.75 171.254 7:30:00 PM 7.4 1.03 277.345 7:45:00 AM 6.674 0.804 190.349 7:45:00 PM 7.383 0.978 264.083 8:00:00 AM 6.907 0.918 227.303 8:00:00 PM 7.422 0.944 256.389 8:15:00 AM 6.987 0.917 227.374 8:15:00 PM 7.409 0.911 245.07 8:30:00 AM 7.099 0.959 245.127 8:30:00 PM 7.511 0.973 263.667 8:45:00 AM 7.398 0.978 264.741 8:45:00 PM 7.568 1.093 299.849 9:00:00 AM 7.37 0.983 261.401 9:00:00 PM 7.652 1.015 286.816 9:15:00 AM 7.682 1.061 301.284 9:15:00 PM 7.727 1.084 305.143 9:30:00 AM 7.498 1.041 286.545 9:30:00 PM 7.686 1.003 278.082 9:45:00 AM 7.601 0.991 277.532 9:45:00 PM 7.706 1.06 299.954 10:00:00 AM 7.805 1.075 304.46 10:00:00 PM 7.786 1.125 321.224 10:15:00 AM 7.704 1.046 284.47 10:15:00 PM 7.636 1.118 314.966 10:30:00 AM 7.679 1.039 294.807 10:30:00 PM 7.469 0.973 263.674 10:45:00 AM 7.832 0.863 251.112 10:45:00 PM 7.371 0.954 257.063 11:00:00 AM 8.026 1.133 336.989 11:00:00 PM 7.201 0.921 235.595 11:15:00 AM 7.925 1.046 308.056 11:15:00 PM 6.96 0.897 223.863 11:30:00 AM 7.871 1.013 296.525 11:30:00 PM 6.946 0.826 205.97 11:45:00 AM 7.839 1.061 300.76 11:45:00 PM 6.6 0.771 176.301 Inches Feet/Sec GPM
Daily Avg: 6.885 0.839 214.593
Daily Min: 5.23 0.344 58.126
Daily Max: 8.026 1.133 336.989
Peak to Avg: 1.57
Sunday - A.M. 7/16/2023 Sunday - P.M. 7/16/2023
DRAFT
824
Project: City of Santa Paula - Sewer Flow Study
Location: 224 S. Palm, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/17/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
825
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 224 S. Palm
Time Level Velocity Velocity Time Level Velocity Flow
12:10:00 AM 6.233 0.632 136.879 12:00:00 PM 7.319 1.029 274.561 12:15:00 AM 6.256 0.67 145.813 12:15:00 PM 7.273 0.972 254.845 12:30:00 AM 6.091 0.587 120.64 12:30:00 PM 7.264 0.933 241.134 12:45:00 AM 5.846 0.614 122.051 12:45:00 PM 7.272 0.982 259.965 1:00:00 AM 5.71 0.58 111.725 1:00:00 PM 7.268 1.013 267.694 1:15:00 AM 5.695 0.51 97.809 1:15:00 PM 7.103 0.998 255.691 1:30:00 AM 5.647 0.515 97.737 1:30:00 PM 7.224 0 0
1:45:00 AM 5.533 0.417 75.695 1:45:00 PM 7.266 0.917 238.318 2:00:00 AM 5.486 0.44 80.272 2:00:00 PM 6.995 0.916 230.161 2:15:00 AM 5.462 0.429 77.702 2:15:00 PM 7.413 1.07 290.223 2:30:00 AM 5.435 0.424 75.813 2:30:00 PM 7.364 0.969 260.781 2:45:00 AM 5.419 0.429 76.874 2:45:00 PM 7.289 0.953 246.109 3:00:00 AM 5.513 0.47 86.371 3:00:00 PM 7.039 1.064 270.216 3:15:00 AM 5.448 0.43 77.742 3:15:00 PM 6.976 0.941 235.401 3:30:00 AM 5.408 0.417 74.563 3:30:00 PM 7.201 0.89 232.584 3:45:00 AM 5.393 0.4 71.198 3:45:00 PM 7.094 0.888 227.652 4:00:00 AM 5.384 0.424 75.306 4:00:00 PM 6.952 0.942 231.839 4:15:00 AM 5.475 0.453 80.878 4:15:00 PM 6.976 1.03 258.355 4:30:00 AM 5.582 0.502 90.978 4:30:00 PM 7.174 0.96 249.795 4:45:00 AM 5.592 0.515 96.365 4:45:00 PM 7.27 0.975 257.877 5:00:00 AM 5.728 0.482 91.228 5:00:00 PM 7.393 1.055 285.173 5:15:00 AM 5.849 0.577 114.711 5:15:00 PM 7.346 1.079 289.306 5:30:00 AM 6.092 0.632 132.761 5:30:00 PM 7.354 1.015 271.483 5:45:00 AM 6.352 0.758 168.15 5:45:00 PM 7.406 0.97 261.037 6:00:00 AM 6.288 0.731 159.608 6:00:00 PM 7.75 1.123 322.295 6:15:00 AM 6.506 0.808 184.979 6:15:00 PM 7.548 1.14 316.584 6:30:00 AM 6.903 0.928 229.737 6:30:00 PM 7.463 1.043 280.813 6:45:00 AM 6.9 0.907 221.691 6:45:00 PM 7.424 0.98 266.29 7:00:00 AM 6.954 0.848 211.88 7:00:00 PM 7.607 0.995 279.04 7:15:00 AM 7.137 0.937 237.758 7:15:00 PM 7.635 1.044 294.034 7:30:00 AM 7.162 0.957 245.021 7:30:00 PM 7.686 1.076 305.79 7:45:00 AM 7.314 0.923 240.757 7:45:00 PM 7.537 1.056 285.157 8:00:00 AM 7.327 1.004 268.39 8:00:00 PM 7.541 1.069 296.523 8:15:00 AM 7.332 0.917 245.37 8:15:00 PM 7.747 1.071 307.21 8:30:00 AM 7.371 0.941 250.122 8:30:00 PM 7.717 1.061 296.746 8:45:00 AM 7.561 1.08 284.907 8:45:00 PM 7.691 1.044 296.77 9:00:00 AM 7.328 0.931 247.823 9:00:00 PM 7.965 1.16 344.566 9:15:00 AM 7.239 0.989 251.054 9:15:00 PM 7.721 1.112 316.75 9:30:00 AM 7.338 1.14 302.011 9:30:00 PM 7.783 1.079 311.493 9:45:00 AM 7.39 1.058 282.188 9:45:00 PM 7.841 1.113 324.197 10:00:00 AM 7.327 1.053 281.485 10:00:00 PM 7.749 1.1 312.755 10:15:00 AM 7.397 0.999 268.293 10:15:00 PM 7.801 1.096 317.157 10:30:00 AM 7.536 1.045 289.64 10:30:00 PM 7.567 1.083 301.601 10:45:00 AM 7.283 0.904 239.927 10:45:00 PM 7.468 1.095 297.152 11:00:00 AM 7.185 1.042 271.658 11:00:00 PM 7.362 0.996 267.77 11:15:00 AM 7.282 1.053 273.197 11:15:00 PM 7.06 0.949 241.59 11:30:00 AM 7.246 0.896 229.801 11:30:00 PM 6.864 0.899 221.006 11:45:00 AM 7.329 0.984 258.002 11:45:00 PM 6.729 0.889 210.242 Inches Feet/Sec GPM
Daily Avg: 6.921 0.869 222.331
Daily Min: 5.384 0 0
Daily Max: 7.965 1.16 344.566
Peak to Avg: 1.55
Monday - A.M. 7/17/2023 Monday - P.M. 7/17/2023
DRAFT
826
Project: City of Santa Paula - Sewer Flow Study
Location: 224 S. Palm, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/18/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
827
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 224 S. Palm
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 6.436 0.831 187.73 12:00:00 PM 7.166 1.034 268.514 12:15:00 AM 6.355 0.712 158.124 12:15:00 PM 6.929 0.988 245.661 12:30:00 AM 6.203 0.708 152.168 12:30:00 PM 6.87 0.911 222.197 12:45:00 AM 6.024 0.704 144.569 12:45:00 PM 7.018 0.902 228.109 1:00:00 AM 5.972 0.663 133.712 1:00:00 PM 7.043 0.947 240.62 1:15:00 AM 5.878 0.599 119.983 1:15:00 PM 6.941 0.976 242.962 1:30:00 AM 5.879 0.561 111.425 1:30:00 PM 6.99 0.896 219.847 1:45:00 AM 5.822 0.533 105.393 1:45:00 PM 6.865 0.886 217.727 2:00:00 AM 5.58 0.516 94.727 2:00:00 PM 6.838 0.951 226.511 2:15:00 AM 5.644 0.514 96.338 2:15:00 PM 6.976 0.955 237.793 2:30:00 AM 5.48 0.481 87.616 2:30:00 PM 6.846 0.929 227.583 2:45:00 AM 5.383 0.438 77.893 2:45:00 PM 6.971 0.991 248.373 3:00:00 AM 5.242 0.382 65.539 3:00:00 PM 6.939 1.03 256.748 3:15:00 AM 5.218 0.398 67.329 3:15:00 PM 6.917 0.878 207.813 3:30:00 AM 5.281 0.432 73.272 3:30:00 PM 7.113 0.962 247.492 3:45:00 AM 5.34 0.441 77.461 3:45:00 PM 7.004 0.885 223.139 4:00:00 AM 5.301 0.389 67.799 4:00:00 PM 6.864 0.929 228.368 4:15:00 AM 5.463 0.488 88.585 4:15:00 PM 6.992 1.04 261.753 4:30:00 AM 5.454 0.443 79.844 4:30:00 PM 7.239 1.008 265.383 4:45:00 AM 5.593 0.49 91.642 4:45:00 PM 7.192 0.997 257.967 5:00:00 AM 5.869 0.623 124.525 5:00:00 PM 7.223 1.025 263.278 5:15:00 AM 5.896 0.675 135.687 5:15:00 PM 7.168 1.041 270.525 5:30:00 AM 6.153 0.703 146.568 5:30:00 PM 7.171 1 256.151 5:45:00 AM 6.138 0.622 130.211 5:45:00 PM 7.328 1.073 286.893 6:00:00 AM 6.319 0.704 155.204 6:00:00 PM 7.213 1.017 266.512 6:15:00 AM 6.462 0.769 172.269 6:15:00 PM 7.331 1.007 268.028 6:30:00 AM 6.625 0.835 194.211 6:30:00 PM 7.364 0.99 262.392 6:45:00 AM 6.943 0.942 234.734 6:45:00 PM 7.549 1.021 281.155 7:00:00 AM 6.808 0.939 226.131 7:00:00 PM 7.38 1.036 279.022 7:15:00 AM 7.1 0.902 228.495 7:15:00 PM 7.552 1.18 327.805 7:30:00 AM 8.666 1.277 420.868 7:30:00 PM 7.711 1.176 335.405 7:45:00 AM 7.484 1.074 295.008 7:45:00 PM 7.649 1.139 321.522 8:00:00 AM 7.314 1.013 270.263 8:00:00 PM 7.616 1.104 305.369 8:15:00 AM 7.163 0.99 248.241 8:15:00 PM 7.429 1.055 287.131 8:30:00 AM 7.226 1.052 276.346 8:30:00 PM 7.664 1.188 334.984 8:45:00 AM 7.255 0.981 255.96 8:45:00 PM 7.534 1.148 317.959 9:00:00 AM 7.242 1.099 284.995 9:00:00 PM 7.743 1.113 319.172 9:15:00 AM 7.402 0.971 262.42 9:15:00 PM 7.883 1.191 339.052 9:30:00 AM 7.472 1.093 299.62 9:30:00 PM 8.115 1.192 361.064 9:45:00 AM 7.287 0.848 222.609 9:45:00 PM 7.78 1.159 332.731 10:00:00 AM 7.114 0.981 252.364 10:00:00 PM 7.703 1.236 352.053 10:15:00 AM 7.138 1.013 261.831 10:15:00 PM 7.508 1.05 289.596 10:30:00 AM 7.329 0.938 248.492 10:30:00 PM 7.267 1.036 270.027 10:45:00 AM 7.138 1.035 267.561 10:45:00 PM 7.277 0.956 253.341 11:00:00 AM 7.37 0.981 253.551 11:00:00 PM 7.039 0.882 224.02 11:15:00 AM 7.24 0.965 254.1 11:15:00 PM 6.694 0.939 223.18 11:30:00 AM 7.162 0.995 257.543 11:30:00 PM 6.434 0.918 207.152 11:45:00 AM 7.176 1.011 262.876 11:45:00 PM 6.442 0.801 174.59 Inches Feet/Sec GPM
Daily Avg: 6.843 0.891 224.429
Daily Min: 5.218 0.382 65.539
Daily Max: 8.666 1.277 420.868
Peak to Avg: 1.88
Tuesday- A.M. 7/18/2023 Tuesday- P.M. 7/18/2023
DRAFT
828
Project: City of Santa Paula - Sewer Flow Study
Location: 224 S. Palm, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/19/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
829
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 224 S. Palm
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 6.237 0.831 180.038 12:00:00 PM 6.997 0.999 251.739 12:15:00 AM 6.121 0.746 153.35 12:15:00 PM 6.904 0.951 231.554 12:30:00 AM 5.804 0.631 124.168 12:30:00 PM 6.881 0.956 235.629 12:45:00 AM 5.812 0.602 118.697 12:45:00 PM 7.006 0.977 246.594 1:00:00 AM 5.697 0.556 106.623 1:00:00 PM 7.003 0.985 248.381 1:15:00 AM 5.94 0.655 132.951 1:15:00 PM 6.989 0.956 240.359 1:30:00 AM 5.706 0.618 118.953 1:30:00 PM 7.019 1.034 255.474 1:45:00 AM 5.651 0.539 102.284 1:45:00 PM 6.884 0.907 223.77 2:00:00 AM 5.532 0.51 93.335 2:00:00 PM 6.94 0.942 232.874 2:15:00 AM 5.491 0.525 95.948 2:15:00 PM 6.944 0.993 246.52 2:30:00 AM 5.413 0.443 77.572 2:30:00 PM 7.003 0.985 244.554 2:45:00 AM 5.397 0.425 74.992 2:45:00 PM 6.98 0.956 240.036 3:00:00 AM 5.443 0.469 83.85 3:00:00 PM 7.069 1.015 259.03 3:15:00 AM 5.432 0.466 83.859 3:15:00 PM 6.874 0.934 230.016 3:30:00 AM 5.394 0.488 86.998 3:30:00 PM 7.102 0.983 252.43 3:45:00 AM 5.414 0.413 73.923 3:45:00 PM 7.045 0.974 247.418 4:00:00 AM 5.43 0.45 80.892 4:00:00 PM 7.076 0.96 244.211 4:15:00 AM 5.431 0.47 84.649 4:15:00 PM 7.038 1.012 256.787 4:30:00 AM 5.574 0.479 89.196 4:30:00 PM 6.982 0.993 248.991 4:45:00 AM 5.688 0.522 98.129 4:45:00 PM 6.925 0.946 234.854 5:00:00 AM 5.783 0.673 131.839 5:00:00 PM 6.954 0.946 236.331 5:15:00 AM 5.903 0.654 130.775 5:15:00 PM 7.046 0.993 251.524 5:30:00 AM 6.016 0.764 157.711 5:30:00 PM 6.851 0.945 228.756 5:45:00 AM 6.192 0.684 146.855 5:45:00 PM 6.96 1.04 260.162 6:00:00 AM 6.229 0.688 148.261 6:00:00 PM 7.183 1.059 276.024 6:15:00 AM 6.527 0.864 198.646 6:15:00 PM 7.255 1.054 278.208 6:30:00 AM 6.668 0.869 205.605 6:30:00 PM 7.455 1.087 293.875 6:45:00 AM 7.067 0.99 252.551 6:45:00 PM 7.293 1.033 269.574 7:00:00 AM 6.992 0.919 228.477 7:00:00 PM 7.202 1.055 275.078 7:15:00 AM 6.996 0.968 238.277 7:15:00 PM 7.37 1.081 284.797 7:30:00 AM 7.074 0.964 241.347 7:30:00 PM 7.461 1.067 284.716 7:45:00 AM 7.189 0.934 243.655 7:45:00 PM 7.472 1.09 298.861 8:00:00 AM 7.269 1.059 276.431 8:00:00 PM 7.368 1.129 303.105 8:15:00 AM 7.277 1.108 288.957 8:15:00 PM 7.379 1.028 272.874 8:30:00 AM 7.113 1.039 264.811 8:30:00 PM 7.591 1.099 307.293 8:45:00 AM 7.023 0.974 243.826 8:45:00 PM 7.581 1.097 303.897 9:00:00 AM 6.908 0.908 218.987 9:00:00 PM 7.637 1.059 294.715 9:15:00 AM 6.988 0.957 236.991 9:15:00 PM 7.749 1.113 319.342 9:30:00 AM 6.937 0.989 243.414 9:30:00 PM 7.935 1.132 334.137 9:45:00 AM 7.026 1.035 259.231 9:45:00 PM 7.945 1.166 336.256 10:00:00 AM 7.003 0.969 244.305 10:00:00 PM 7.806 1.115 323.036 10:15:00 AM 7.019 1.06 267.858 10:15:00 PM 7.841 1.131 329.522 10:30:00 AM 6.926 0.945 233.404 10:30:00 PM 7.684 1.239 343.754 10:45:00 AM 6.769 0.935 224.424 10:45:00 PM 7.57 1.093 304.701 11:00:00 AM 6.931 0.977 240.408 11:00:00 PM 7.212 1.003 262.816 11:15:00 AM 6.807 0.914 222.136 11:15:00 PM 7.03 0.947 237.472 11:30:00 AM 6.942 0.996 248.339 11:30:00 PM 6.89 0.89 219.648 11:45:00 AM 7.021 0.985 245.514 11:45:00 PM 6.575 0.828 187.262 Inches Feet/Sec GPM
Daily Avg: 6.768 0.893 220.551
Daily Min: 5.394 0.413 73.923
Daily Max: 7.945 1.239 343.754
Peak to Avg: 1.56
Wednesday - A.M. 7/19/2023 Wednesday - P.M. 7/19/2023
DRAFT
830
Project: City of Santa Paula - Sewer Flow Study
Location: 224 S. Palm, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/20/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
831
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 224 S. Palm
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 6.361 0.804 178.766 12:00:00 PM 7.115 1.056 265.161 12:15:00 AM 6.14 0.751 159.216 12:15:00 PM 7.086 0.967 247.568 12:30:00 AM 5.989 0.654 132.689 12:30:00 PM 6.976 1.09 273.454 12:45:00 AM 6.14 0.708 150.257 12:45:00 PM 7.058 1.009 257.122 1:00:00 AM 5.748 0.575 111.304 1:00:00 PM 7.08 0.989 250.068 1:15:00 AM 5.584 0.523 97.336 1:15:00 PM 7.104 1.044 268.081 1:30:00 AM 5.675 0.56 106.975 1:30:00 PM 6.946 1.008 251.513 1:45:00 AM 5.572 0.537 96.664 1:45:00 PM 6.78 0.939 224.211 2:00:00 AM 5.52 0.526 96.205 2:00:00 PM 6.811 0.984 239.392 2:15:00 AM 5.377 0.455 80.251 2:15:00 PM 6.842 0.968 235.827 2:30:00 AM 5.298 0.438 75.525 2:30:00 PM 6.834 0.937 226.976 2:45:00 AM 5.271 0.471 81.009 2:45:00 PM 6.77 0.918 218.521 3:00:00 AM 5.352 0.538 94.862 3:00:00 PM 6.913 0.967 237.385 3:15:00 AM 5.38 0.445 79.043 3:15:00 PM 6.981 1.021 255.721 3:30:00 AM 5.368 0.453 80.248 3:30:00 PM 6.951 0.974 242.974 3:45:00 AM 5.334 0.436 76.337 3:45:00 PM 6.806 1.036 251.821 4:00:00 AM 5.334 0.467 81.646 4:00:00 PM 6.977 0.938 231.072 4:15:00 AM 5.296 0.433 75.333 4:15:00 PM 6.958 1.051 262.849 4:30:00 AM 5.381 0.454 78.69 4:30:00 PM 7.114 1.068 273.365 4:45:00 AM 5.438 0.501 90.382 4:45:00 PM 7.248 1.117 289.59 5:00:00 AM 5.694 0.593 113.811 5:00:00 PM 7.369 1.107 298.195 5:15:00 AM 5.884 0.681 129.839 5:15:00 PM 7.297 1.024 269.329 5:30:00 AM 6.016 0.667 135.908 5:30:00 PM 7.43 1.171 318.791 5:45:00 AM 6.206 0.831 178.907 5:45:00 PM 7.319 1.04 277.683 6:00:00 AM 6.153 0.789 166.525 6:00:00 PM 7.626 1.147 322.596 6:15:00 AM 6.317 0.794 174.811 6:15:00 PM 7.342 1.036 274.293 6:30:00 AM 6.587 0.888 201.03 6:30:00 PM 7.259 1.037 270.628 6:45:00 AM 6.763 0.952 229.384 6:45:00 PM 7.327 1.075 287.289 7:00:00 AM 6.623 0.976 227.859 7:00:00 PM 7.068 1.013 255.22 7:15:00 AM 6.948 1.067 262.936 7:15:00 PM 7.271 1.085 283.675 7:30:00 AM 7.111 0.982 252.49 7:30:00 PM 7.233 1.104 290.181 7:45:00 AM 7.325 1.011 269.277 7:45:00 PM 7.278 1.103 291.728 8:00:00 AM 7.267 0.987 255.735 8:00:00 PM 7.475 1.079 295.896 8:15:00 AM 7.313 1.019 264.162 8:15:00 PM 7.386 1.126 301.621 8:30:00 AM 7.268 1.078 282.516 8:30:00 PM 7.523 1.109 306.529 8:45:00 AM 7.162 1.078 279.84 8:45:00 PM 7.59 1.197 331.801 9:00:00 AM 7.132 0.976 239.853 9:00:00 PM 7.635 1.112 313.392 9:15:00 AM 6.899 0.953 235.707 9:15:00 PM 7.737 1.116 319.766 9:30:00 AM 6.87 0.938 229.923 9:30:00 PM 7.909 1.18 347.513 9:45:00 AM 7.091 1.028 263.388 9:45:00 PM 7.735 1.123 321.537 10:00:00 AM 7.15 0.987 253.952 10:00:00 PM 7.81 1.111 322.024 10:15:00 AM 6.88 0.991 242.308 10:15:00 PM 7.66 1.143 319.435 10:30:00 AM 6.966 0.948 237.325 10:30:00 PM 7.652 1.106 306.915 10:45:00 AM 7.205 1.128 295.081 10:45:00 PM 7.41 0.982 266.225 11:00:00 AM 7.07 1.096 278.083 11:00:00 PM 6.9 0.925 226.501 11:15:00 AM 7.06 1.003 254.047 11:15:00 PM 6.917 0.985 244.336 11:30:00 AM 7.101 0.991 252.803 11:30:00 PM 6.751 0.923 221.993 11:45:00 AM 7.211 1.09 285.406 11:45:00 PM 6.692 0.848 200.6 Inches Feet/Sec GPM
Daily Avg: 6.769 0.913 226.234
Daily Min: 5.271 0.433 75.333
Daily Max: 7.909 1.197 347.513
Peak to Avg: 1.54
Thursday - A.M. 7/20/2023 Thursday - P.M. 7/20/2023
DRAFT
832
Project: City of Santa Paula - Sewer Flow Study
Location: 224 S. Palm, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/21/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
833
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 224 S. Palm
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 6.549 0.854 191.468 12:00:00 PM 7.264 0.998 259.31 12:15:00 AM 6.428 0.805 179.563 12:15:00 PM 7.395 1.02 275.832 12:30:00 AM 6.29 0.741 162.414 12:30:00 PM 7.388 1.01 262.681 12:45:00 AM 6.177 0.696 148.635 12:45:00 PM 7.066 0.96 240.322 1:00:00 AM 6.122 0.72 147.641 1:00:00 PM 7.257 0.997 263.313 1:15:00 AM 6.017 0.618 126.154 1:15:00 PM 7.336 1.073 283.344 1:30:00 AM 5.946 0.717 145.836 1:30:00 PM 7.264 0.991 258.121 1:45:00 AM 5.828 0.595 117.722 1:45:00 PM 7.17 1.009 262.294 2:00:00 AM 5.738 0.58 112.406 2:00:00 PM 7.248 0.998 257.996 2:15:00 AM 5.697 0.544 104.407 2:15:00 PM 6.968 1.024 250.504 2:30:00 AM 5.652 0.51 96.92 2:30:00 PM 7.038 0.972 246.665 2:45:00 AM 5.49 0.459 83.872 2:45:00 PM 7.073 0.973 248.644 3:00:00 AM 5.453 0.52 94.044 3:00:00 PM 7.068 0.96 244.491 3:15:00 AM 5.564 0.5 91.422 3:15:00 PM 7.16 0.985 255.512 3:30:00 AM 5.436 0.457 82.399 3:30:00 PM 7.13 1.071 275.282 3:45:00 AM 5.481 0.427 76.682 3:45:00 PM 7.355 1.049 281.873 4:00:00 AM 5.514 0.493 90.11 4:00:00 PM 7.269 1.044 273.884 4:15:00 AM 5.565 0.508 94.364 4:15:00 PM 7.295 1.04 264.803 4:30:00 AM 5.814 0.583 113.216 4:30:00 PM 7.202 1.111 290.359 4:45:00 AM 5.802 0.565 111.046 4:45:00 PM 7.443 1.033 273.103 5:00:00 AM 5.82 0.594 115.415 5:00:00 PM 7.276 1.081 286.421 5:15:00 AM 5.886 0.595 119.307 5:15:00 PM 7.202 1.032 266.963 5:30:00 AM 6.076 0.688 144.039 5:30:00 PM 7.097 1.009 258.995 5:45:00 AM 6.234 0.702 152.085 5:45:00 PM 7.393 1.076 290.966 6:00:00 AM 6.201 0.714 153.459 6:00:00 PM 7.338 0.942 252.353 6:15:00 AM 6.38 0.825 183.177 6:15:00 PM 7.253 1.088 284.309 6:30:00 AM 6.61 0.901 204.147 6:30:00 PM 7.215 0.999 261.752 6:45:00 AM 6.664 0.869 204.932 6:45:00 PM 7.28 1.022 270.96 7:00:00 AM 6.905 1.067 264.192 7:00:00 PM 7.308 1.07 280.391 7:15:00 AM 6.954 0.977 244.212 7:15:00 PM 7.179 1.101 286.659 7:30:00 AM 7.078 0.987 251.561 7:30:00 PM 7.251 0.995 253.911 7:45:00 AM 7.14 1.005 250.762 7:45:00 PM 7.328 1.135 296.482 8:00:00 AM 7.058 0.968 245.047 8:00:00 PM 7.293 1.079 286.748 8:15:00 AM 7.346 1.084 290.263 8:15:00 PM 7.278 1.063 281.627 8:30:00 AM 7.476 1.124 308.259 8:30:00 PM 7.315 1 266.68 8:45:00 AM 7.461 1.098 300.468 8:45:00 PM 7.301 1.131 300.903 9:00:00 AM 7.27 1.022 269.412 9:00:00 PM 7.285 1.035 272.735 9:15:00 AM 7.485 1.079 296.287 9:15:00 PM 7.34 1.077 288.477 9:30:00 AM 7.552 1.019 276.971 9:30:00 PM 7.47 1.109 301.71 9:45:00 AM 7.543 1.108 307.224 9:45:00 PM 7.418 1.077 292.482 10:00:00 AM 7.321 1.03 274.936 10:00:00 PM 7.268 1.107 291.104 10:15:00 AM 7.374 1.05 279.702 10:15:00 PM 7.319 1.034 276.064 10:30:00 AM 7.423 1.044 281.587 10:30:00 PM 7.153 0.999 258.785 10:45:00 AM 7.325 1.053 280.122 10:45:00 PM 7.164 0.988 255.834 11:00:00 AM 7.367 1.013 272.597 11:00:00 PM 7.02 0.961 243.042 11:15:00 AM 7.429 1.007 272.816 11:15:00 PM 6.825 0.906 221.045 11:30:00 AM 7.251 1.014 262.361 11:30:00 PM 6.781 0.957 230.79 11:45:00 AM 7.296 0.975 259.321 11:45:00 PM 6.549 0.862 199.15 Inches Feet/Sec GPM
Daily Avg: 6.866 0.915 229.149
Daily Min: 5.436 0.427 76.682
Daily Max: 7.552 1.135 308.259
Peak to Avg: 1.35
Friday - A.M. 7/21/2023 Friday - P.M. 7/21/2023
DRAFT
834
Project: City of Santa Paula - Sewer Flow Study
Location: 224 S. Palm, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/22/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
835
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 224 S. Palm
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 6.47 0.808 180.59 12:00:00 PM 7.427 1.149 312.411 12:15:00 AM 6.38 0.829 184.992 12:15:00 PM 7.581 1.101 307.458 12:30:00 AM 6.293 0.806 174.207 12:30:00 PM 7.69 1.137 323.331 12:45:00 AM 6.15 0.727 153.528 12:45:00 PM 7.542 1.09 302.445 1:00:00 AM 6.039 0.684 141.909 1:00:00 PM 7.267 1.117 290.88 1:15:00 AM 6.049 0.672 138.716 1:15:00 PM 7.391 1.115 301.292 1:30:00 AM 5.99 0.671 136.001 1:30:00 PM 7.517 1.093 301.918 1:45:00 AM 5.984 0.526 107.919 1:45:00 PM 7.635 1.068 294.068 2:00:00 AM 5.883 0.457 88.252 2:00:00 PM 7.357 1.048 276.028 2:15:00 AM 5.698 0.415 79.161 2:15:00 PM 7.308 1.092 290.974 2:30:00 AM 5.685 0.441 84.417 2:30:00 PM 7.391 1.047 280.814 2:45:00 AM 5.75 0.44 85.569 2:45:00 PM 7.331 1.069 285.924 3:00:00 AM 5.699 0.537 102.887 3:00:00 PM 7.212 1.093 286.268 3:15:00 AM 5.677 0.441 83.619 3:15:00 PM 7.295 1.037 271.8 3:30:00 AM 5.608 0.408 76.614 3:30:00 PM 7.067 1.106 282.144 3:45:00 AM 5.541 0.373 68.997 3:45:00 PM 7.137 0.997 253.24 4:00:00 AM 5.499 0.402 73.439 4:00:00 PM 7.12 1.084 279.231 4:15:00 AM 5.541 0.444 81.838 4:15:00 PM 7.269 1.046 276.552 4:30:00 AM 5.668 0.42 80.038 4:30:00 PM 7.143 1.068 276.351 4:45:00 AM 5.763 0.46 87.602 4:45:00 PM 7.105 1.119 287.541 5:00:00 AM 5.648 0.558 105.772 5:00:00 PM 6.983 1.001 251.415 5:15:00 AM 5.659 0.497 94.548 5:15:00 PM 7.103 0.967 248.169 5:30:00 AM 5.779 0.574 110.786 5:30:00 PM 7.122 1.013 260.988 5:45:00 AM 5.784 0.619 120.143 5:45:00 PM 7 1.091 275.043 6:00:00 AM 5.974 0.595 121.688 6:00:00 PM 7.08 1.03 258.429 6:15:00 AM 5.908 0.577 116.247 6:15:00 PM 6.921 0.925 225.362 6:30:00 AM 5.931 0.573 116.193 6:30:00 PM 6.948 0.96 237.76 6:45:00 AM 6.102 0.654 133.611 6:45:00 PM 6.924 0.941 233.78 7:00:00 AM 6.131 0.634 134.148 7:00:00 PM 6.714 0.934 219.433 7:15:00 AM 6.562 0.825 189.492 7:15:00 PM 7.008 1.053 265.762 7:30:00 AM 6.683 0.939 219.023 7:30:00 PM 6.916 1.025 251.189 7:45:00 AM 6.796 0.892 214.865 7:45:00 PM 6.877 0.913 222.926 8:00:00 AM 7.162 1.019 264.626 8:00:00 PM 7.063 0.972 247.782 8:15:00 AM 7.096 1.026 256.999 8:15:00 PM 6.933 1.02 253.889 8:30:00 AM 7.198 1.049 274.06 8:30:00 PM 6.974 0.991 246.793 8:45:00 AM 7.474 1.11 304.34 8:45:00 PM 7.074 1.003 246.355 9:00:00 AM 7.747 1.116 320.112 9:00:00 PM 7.161 1.031 262.78 9:15:00 AM 7.6 1.138 318.734 9:15:00 PM 7.058 0.982 250.049 9:30:00 AM 7.804 1.19 344.49 9:30:00 PM 7.067 0.994 251.045 9:45:00 AM 7.809 1.155 334.864 9:45:00 PM 7.154 1.032 267.528 10:00:00 AM 7.894 1.17 338.352 10:00:00 PM 7.079 0.998 253.586 10:15:00 AM 7.768 1.185 341.035 10:15:00 PM 7.035 0.986 250.013 10:30:00 AM 7.491 1.007 276.776 10:30:00 PM 6.928 1.013 251.627 10:45:00 AM 7.46 1.108 293.65 10:45:00 PM 6.751 0.94 222.614 11:00:00 AM 7.523 1.186 327.976 11:00:00 PM 6.703 0.895 208.999 11:15:00 AM 7.693 1.107 306.054 11:15:00 PM 6.597 0.919 214.422 11:30:00 AM 7.742 1.081 310.04 11:30:00 PM 6.662 0.865 202.14 11:45:00 AM 7.6 1.123 311.582 11:45:00 PM 6.304 0.777 169.756 Inches Feet/Sec GPM
Daily Avg: 6.798 0.893 222.739
Daily Min: 5.499 0.373 68.997
Daily Max: 7.894 1.19 344.49
Peak to Avg: 1.55
Saturday - A.M. 7/22/2023 Saturday - P.M. 7/22/2023
DRAFT
836
Project: City of Santa Paula - Sewer Flow Study
Location: 224 S. Palm, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/23/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
837
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 224 S. Palm
Time Level Velocity Flow Time Level Velocity Flow
12:00:00 AM 6.291 0.791 169.053 12:00:00 PM 7.283 1.018 263.539 12:15:00 AM 6.084 0.697 146.175 12:15:00 PM 7.224 0.986 258.621 12:30:00 AM 6.003 0.845 173.993 12:30:00 PM 7.473 1.115 300.549 12:45:00 AM 6.023 0.669 135.863 12:45:00 PM 7.58 1.109 309.633 1:00:00 AM 5.899 0.579 115.319 1:00:00 PM 7.353 1.039 275.98 1:15:00 AM 5.79 0.66 127.835 1:15:00 PM 7.418 0.989 268.508 1:30:00 AM 5.769 0.544 106.058 1:30:00 PM 7.267 1.042 270.911 1:45:00 AM 5.648 0 0 1:45:00 PM 7.304 1.051 278.984
2:00:00 AM 5.505 0 0 2:00:00 PM 7.322 1.1 284.405
2:15:00 AM 5.468 0.483 86.966 2:15:00 PM 7.019 1.014 254.833 2:30:00 AM 5.403 0.391 69.67 2:30:00 PM 7.075 1.028 262.611 2:45:00 AM 5.469 0.462 83.959 2:45:00 PM 7.05 1.007 256.227 3:00:00 AM 5.338 0.387 66.391 3:00:00 PM 7.087 1.009 258.525 3:15:00 AM 5.253 0.457 78.128 3:15:00 PM 7.048 0.96 241.953 3:30:00 AM 5.286 0.388 65.914 3:30:00 PM 7.081 0.98 246.16 3:45:00 AM 5.216 0 0 3:45:00 PM 7.191 1.017 265.406
4:00:00 AM 5.286 0 0 4:00:00 PM 7.216 1.122 294.073
4:15:00 AM 5.288 0 0 4:15:00 PM 7.159 1.02 262.355
4:30:00 AM 5.252 0 0 4:30:00 PM 7.134 1.041 268.998
4:45:00 AM 5.238 0 0 4:45:00 PM 7.142 0.971 244.344
5:00:00 AM 5.161 0 0 5:00:00 PM 7.204 1.068 279.295
5:15:00 AM 5.182 0 0 5:15:00 PM 7.259 1.148 299.36
5:30:00 AM 5.344 0 0 5:30:00 PM 7.142 1.099 281.367
5:45:00 AM 5.358 0 0 5:45:00 PM 7.218 1.016 262.616
6:00:00 AM 5.488 0 0 6:00:00 PM 7.097 1.035 265.42
6:15:00 AM 5.54 0 0 6:15:00 PM 7.013 0.967 244.218
6:30:00 AM 5.603 0.498 92.456 6:30:00 PM 7.069 1.087 277.58 6:45:00 AM 5.797 0.33 64.788 6:45:00 PM 7.265 1.024 268.898 7:00:00 AM 5.932 0.371 74.533 7:00:00 PM 7.301 1.057 280.16 7:15:00 AM 6.046 0.467 97.015 7:15:00 PM 7.458 1.098 300.193 7:30:00 AM 6.377 0.541 114.088 7:30:00 PM 7.211 1.069 276.367 7:45:00 AM 6.491 0.597 136.293 7:45:00 PM 7.376 1.029 275.611 8:00:00 AM 6.632 0.52 117.725 8:00:00 PM 7.111 1.08 277.726 8:15:00 AM 6.787 0.71 171.962 8:15:00 PM 7.188 1.099 286.568 8:30:00 AM 6.781 0.663 160.238 8:30:00 PM 7.337 1.042 276.931 8:45:00 AM 6.934 0.766 190.704 8:45:00 PM 7.377 1.1 294.449 9:00:00 AM 7.338 0.948 253.79 9:00:00 PM 7.506 1.154 318.18 9:15:00 AM 7.493 0.981 269.82 9:15:00 PM 7.671 1.154 324.99 9:30:00 AM 7.661 0.867 236.112 9:30:00 PM 7.862 1.124 328.558 9:45:00 AM 7.643 0.864 234.083 9:45:00 PM 7.614 1.064 298.582 10:00:00 AM 7.423 1.099 298.605 10:00:00 PM 7.489 1.093 300.583 10:15:00 AM 7.464 1.22 331.823 10:15:00 PM 7.323 1.124 300.193 10:30:00 AM 7.817 1.234 358.139 10:30:00 PM 7.237 1.023 269.25 10:45:00 AM 7.784 1.182 341.238 10:45:00 PM 7.156 0.999 258.493 11:00:00 AM 7.809 1.194 343.669 11:00:00 PM 7.033 1.101 279.228 11:15:00 AM 7.669 1.153 319.97 11:15:00 PM 6.824 0.932 227.156 11:30:00 AM 7.495 0.998 267.649 11:30:00 PM 6.721 0.904 212.342 11:45:00 AM 7.275 1.013 263.945 11:45:00 PM 6.494 0.864 197.352 Inches Feet/Sec GPM
Daily Avg: 6.721 0.789 201.297
Daily Min: 5.161 0 0
Daily Max: 7.862 1.234 358.139
Peak to Avg: 1.78
Sunday - A.M. 7/23/2023 Sunday - P.M. 7/23/2023
DRAFT
838
Project: City of Santa Paula - Sewer Flow Study
Location: 224 S. Palm, Santa Paula, CA
Flow Meter: Teledyne Isco 2150 Area Velocity w/ Pressure Transducer Time Period: 7/24/2023, 12:00 a.m. - 12:00 p.m.

MAXIMUM DAILY FLOW DATA
Maximum Level Maximum Velocity Maximum Flow Rate
DRAFT
839
Project: City of Santa Paula - Sewer Flow Study
Manhole Location: 224 S. Palm
Time Level Velocity Velocity Time Level Velocity Flow
12:10:00 AM 6.327 0.769 165.914 12:00:00 PM 7.031 0.998 251.241 12:15:00 AM 6.265 0.82 178.626 12:15:00 PM 7.143 1.007 258.079 12:30:00 AM 5.956 0.651 125.797 12:30:00 PM 7.111 0.986 253.766 12:45:00 AM 6 0.749 154.044 12:45:00 PM 7.267 1.05 272.694 1:00:00 AM 5.924 0.619 125.203 1:00:00 PM 7.168 1.054 272.796 1:15:00 AM 5.738 0.593 113.569 1:15:00 PM 7.155 0.995 258.086 1:30:00 AM 5.628 0.571 107.896 1:30:00 PM 7.067 0.982 244.061 1:45:00 AM 5.632 0.475 87.068 1:45:00 PM 6.988 0.975 245.187 2:00:00 AM 5.65 0.581 110.239 2:00:00 PM 6.989 0.984 247.219 2:15:00 AM 5.632 0.538 101.631 2:15:00 PM 7.057 0.933 237.295 2:30:00 AM 5.433 0.43 76.119 2:30:00 PM 7.146 0.969 250.935 2:45:00 AM 5.325 0.437 76.252 2:45:00 PM 7.093 1.025 262.786 3:00:00 AM 5.378 0.479 84.995 3:00:00 PM 6.925 1.043 259.211 3:15:00 AM 5.357 0.518 89.023 3:15:00 PM 6.956 1.031 254.407 3:30:00 AM 5.384 0.523 91.596 3:30:00 PM 7.037 0.914 231.561 3:45:00 AM 5.273 0.529 91.492 3:45:00 PM 7.078 1.082 271.098 4:00:00 AM 5.294 0.434 74.443 4:00:00 PM 7.189 1.023 261.89 4:15:00 AM 5.293 0.47 81.326 4:15:00 PM 7.234 1.071 281.663 4:30:00 AM 5.414 0.473 84.676 4:30:00 PM 7.235 1.013 266.498 4:45:00 AM 5.516 0.568 104.365 4:45:00 PM 7.121 1.108 285.417 5:00:00 AM 5.65 0.63 118.33 5:00:00 PM 7.179 1.059 273.171 5:15:00 AM 5.789 0.66 129.423 5:15:00 PM 7.237 1.053 277.066 5:30:00 AM 5.963 0.666 134.334 5:30:00 PM 7.294 1.185 314.897 5:45:00 AM 6.033 0.819 169.785 5:45:00 PM 7.303 1.032 268.419 6:00:00 AM 6.12 0.86 181.49 6:00:00 PM 7.439 1.189 319.855 6:15:00 AM 6.284 0.802 174.909 6:15:00 PM 7.275 1.102 291.953 6:30:00 AM 6.515 0.913 208.795 6:30:00 PM 7.005 0.953 237.253 6:45:00 AM 6.71 0.956 227.962 6:45:00 PM 7.069 1.023 261.018 7:00:00 AM 6.738 0.941 224.86 7:00:00 PM 7.124 1.036 259.749 7:15:00 AM 6.892 0.956 228.679 7:15:00 PM 7.137 0.996 256.392 7:30:00 AM 6.932 0.985 243.035 7:30:00 PM 7.209 0.971 237.576 7:45:00 AM 7.03 1.091 272.32 7:45:00 PM 7.577 1.066 290.174 8:00:00 AM 7.011 1.065 266.739 8:00:00 PM 7.554 1.113 307.942 8:15:00 AM 6.968 1.06 264.585 8:15:00 PM 7.435 1.136 306.764 8:30:00 AM 7.002 1.108 279.348 8:30:00 PM 7.442 1.041 281.421 8:45:00 AM 7.161 1.057 269.283 8:45:00 PM 7.869 1.156 338.458 9:00:00 AM 7.041 0.992 251.893 9:00:00 PM 7.628 1.132 318.581 9:15:00 AM 7.006 1.076 271.33 9:15:00 PM 7.78 1.182 334.407 9:30:00 AM 7.104 1.043 264.416 9:30:00 PM 7.546 0.989 269.859 9:45:00 AM 7.139 1.061 268.97 9:45:00 PM 7.668 1.137 322.209 10:00:00 AM 7.504 1.119 303.799 10:00:00 PM 7.695 1.145 325.631 10:15:00 AM 7.378 0.968 259.272 10:15:00 PM 7.435 1.159 312.493 10:30:00 AM 7.574 1.103 302.61 10:30:00 PM 7.398 1.045 281.942 10:45:00 AM 7.358 1.078 289.722 10:45:00 PM 7.323 1.057 277.852 11:00:00 AM 7.406 1 269.628 11:00:00 PM 7.066 0.995 253.753 11:15:00 AM 7.368 1.066 279.352 11:15:00 PM 6.767 0.959 223.243 11:30:00 AM 7.098 0.96 245.048 11:30:00 PM 6.489 0.909 207.253 11:45:00 AM 7.24 1.109 290.235 11:45:00 PM 6.292 0.791 171.735 Inches Feet/Sec GPM
Daily Avg: 6.782 0.921 227.742
Daily Min: 5.273 0.43 74.443
Daily Max: 7.869 1.189 338.458
Peak to Avg: 1.49
Monday - A.M. 7/24/2023 Monday - P.M. 7/24/2023
DRAFT
840
Sewer Line Flow Study Summary
Maximum Level Maximum Velocity Maximum Flow Rate
Average:

Maximum:

Minimum:

0.800

0.363

0.408
Velocity - Feet per Second
Average:

Maximum:

Minimum:

Max d/D:

6.675

9.657

5.088

64.4%
Level - Inches
Average:

Maximum::

Minimum:

Peak to Average
196.456
471.466

55.449

2.33 Flow Rate - Gallons Per Minute
Project: City of Santa Paula - Sewer Flow Study
Location: 224 Palm, Santa Paula, CA
Pipe Size: 15” VCP
Time Period: 7/11/2023, 12:00 a.m. - 7/25/2023, 12:00 a.m.

DRAFT
841

APPENDICES
City of Santa Paula Wastewater Collection System and Water Recycling Facility Master Plan Appendix B – Detailed Flow Verification
DRAFT
842
Appendix C - Flow Verification
During the flow monitoring study, the average day water demand was 2.72 MGD and the average day flow to the WRF was 2.02 MGD, resulting in an average return factor of 74%, which is slightly lower than the average return factor of 86% from 2020 to 2022. For validating the preliminary return factors, MKN reduced the return factors for all land uses proportionally by 12%. Table 1 provides the preliminary wastewater return factors adjusted proportionally for validation with the flow monitoring study.

Table 1: Flow Monitoring Wastewater Return Factors
Land Use
Number
of
Parcels
Acreage
Average
Day
Demand
(MGD)1
Average
Day
Demand
(GPM)1
Return
Factor
%
Estimated
ADF
(MGD)
Estimated
ADF
(GPM)
Single-Family
Residential 3,405 829 1.19 827 68% 0.74 512
Multi-Family
Residential 1,890 278 0.81 562 78% 0.57 398
Mobile Homes 6 57 0.14 99 73% 0.09 66
General Commercial 499 266 0.43 300 83% 0.33 226
Commercial Office 178 40 0.07 52 83% 0.06 39
General Industrial 99 130 0.11 80 83% 0.09 60
Public Facilities 23 114 0.12 81 68% 0.07 50
Airport 9 47 0.01 5 73% 0.00 3
Specific Plan 12 124 0.11 74 73% 0.07 49
Total 6,121 1,885 2.99 2,078 74% 2.02 1,403
WRF ADF2 2.02 1,403
Notes:

1. Potable water usage was calculated using a three-year average from 2020 to 2022 water billing data. Water usage that did not result in return wastewater flows was not included in this average (ex: hydrant testing, landscaping-specific meters, water losses, etc.)

2. Actual existing average daily flow calculated from influent WRF data from 2020 to 2022 Table 2 through Table 5 provide a summary of the estimated average day water demand and average day flow within the FM01, FM02, FM03, and FM04
DRAFT
sewersheds during the flow monitoring study.
843
Table 2: Estimated FM01 Results with Adjusted Preliminary Wastewater Return Factors Land Use
Number
of
Sewered
Parcels
Sewered
Acres
Average
Day
Demand
(MGD)
Average
Day
Demand
(GPM)
Return
Factor
%
Estimated
ADF
(MGD)
Estimated
ADF
(GPM)
Single-Family
Residential 282 45 0.07 48 68% 0.05 32
Multi-Family
Residential 58 13 0.04 27 78% 0.03 21
Mobile Homes 3 36 0.08 54 73% 0.06 39
General Commercial 89 52 0.09 64 83% 0.08 53
Commercial Office 1 1 0.00 0 83% 0.00 0
General Industrial 82 77 0.05 37 83% 0.04 31
Public Facilities 1 0 0.00 0 68% 0.00 0
Airport 9 47 0.01 4 73% 0.00 3
Specific Plan 10 92 0.09 64 73% 0.07 47
Total 535 363 0.43 299 76% 0.33 228

Estimated ADF 0.33 228
Flow Monitoring ADF 0.37 256
Percent Difference 11%
Table 3: Estimated FM02 Results with Adjusted Preliminary Wastewater Return Factors Land Use
Number
of
Sewered
Parcels
Sewered
Acres
Average
Day
Demand
(MGD)
Average
Day
Demand
(GPM)
Return
Factor
%
Estimated
ADF
(MGD)
Estimated
ADF
(GPM)
Single-Family
Residential 3084 852 1.00 696 68% 0.68 474
Multi-Family
Residential 1593 234 0.63 438 78% 0.49 341
Mobile Homes 1 13 0.01 6 73% 0.01 5
General Commercial 378 178 0.27 189 83% 0.23 157
Commercial Office 177 40 0.07 46 83% 0.06 39
General Industrial 9 16 0.03 23 83% 0.03 19
Public Facilities 21 103 0.10 72 68% 0.07 49
Airport 0 0 0.00 0 73% 0.00 0
Specific Plan 0 0 0.00 0 73% 0.00 0
Total 5,263 1,435 2 1,471 74% 1.56 1,083

Estimated ADF 1.56 1,083
Flow Monitoring ADF 1.04 722
Percent Difference 50%
DRAFT
844
Table 4: Estimated FM03 Results with Adjusted Preliminary Wastewater Return Factors Land Use
Number
of
Sewered
Parcels
Sewered
Acres
Average
Day
Demand
(MGD)
Average
Day
Demand
(GPM)
Return
Factor
%
Estimated
ADF
(MGD)
Estimated

ADF (GPM)
Single-Family
Residential 1498 437 0.49 339 68% 0.33 230
Multi-Family
Residential 667 106 0.28 197 78% 0.22 154
Mobile Homes 1 13 0.01 6 73% 0.01 5
General
Commercial 230 99 0.14 100 83% 0.12 83
Commercial Office 128 21 0.04 25 83% 0.03 21
General Industrial 4 4 0.00 1 83% 0.00 1
Public Facilities 15 41 0.06 42 68% 0.04 29
Airport 0 0 0.00 0 73% 0.00 0
Specific Plan 0 0 0.00 0 73% 0.00 0
Total 6,121 1,885 2.72 1887 73% 0.75 522

Estimated ADF 0.75 522
Flow Monitoring ADF 0.52 361
Percent Difference 45%
Table 5: Estimated FM04 Results with Adjusted Preliminary Wastewater Return Factors Land Use
Number
of
Sewered
Parcels
Sewered
Acres
Average
Day
Demand
(MGD)
Average
Day
Demand
(GPM)
Return
Factor
%
Estimated
ADF
(MGD)
Estimated
ADF
(GPM)
Single-Family
Residential 649 170 0.24 168 68% 0.16 114
Multi-Family
Residential 346 64 0.16 110 78% 0.12 86
Mobile Homes 0 0 0.00 0 73% 0.00 0
General Commercial 67 22 0.03 22 83% 0.03 18
Commercial Office 24 10 0.01 10 83% 0.01 8
General Industrial 3 10 0.01 4 83% 0.00 3
Public Facilities 1 11 0.01 7 68% 0.01 5
Airport 0 0 0.00 0 73% 0.00 0
Specific Plan 0 0 0.00 0 73% 0.00 0
Total 6,121 1,885 2.72 1887 73% 0.34 235

Estimated ADF 0.34 235
Flow Monitoring ADF 0.31 213
Percent Difference 10%
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Estimated ADF for flow meter basins FM01 and FM04 were within approximately 11% of the measured flows, which are within an acceptable range for validation purposes. However, FM02 and FM03 had large discrepancies at approximately 50% and 45%, respectively. Possible explanations could include discrepancies with the flow meter at the WRF or pipeline connections throughout the collection system that may be directing flow to other portions of the collection system not measured by the flow meters.

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APPENDICES
City of Santa Paula Wastewater Collection System and Water Recycling Facility Master Plan Appendix C – Waste Discharge Requirement and Cease-andDesist Order DRAFT
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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD

WASTE DISCHARGE REQUIREMENTS

ISSUED TO

CITY OF SANTA PAULA
(SANTA PAULA WATER RECYCLING FACILITY)
The California Regional Water Quality Control Board, Los Angeles Region (Regional Water Board) finds:

PURPOSE OF ORDER

1. The City of Santa Paula (City or Discharger) is the owner of the Santa Paula Water Recycling Facility (SPWRF), a Publicly-Owned Treatment Works (POTW), located at 920 Corporation Street in Santa Paula, California (Figure 1). The SPWRF, currently operated by Ventura Regional Sanitation District, discharges tertiarytreated wastewater to groundwater via three percolation ponds adjacent to the facility.

2. The City was previously regulated under Waste Discharge Requirements (WDRs) contained in Order No. R4-2007-0028, adopted by this Regional Board on May 3, 2007. The Regional Board amended Order No. R4-2007-0028 three times as follows:

A. Order No. R4-2010-0074, adopted by this Regional Board on May 6, 2010, required that effluent discharged to percolations ponds shall not exceed 2.6 million gallons per day (MGD).

B. Order No. R4-2007-0028-R02, adopted by this Regional Board on February 2, 2012, incorporated pretreatment program requirements and corresponding monitoring requirements.

C. Order No. R4-2007-0028-R03, adopted by this Regional Board on April 6, 2017, extended the expiration date of Order No. R4-2007-0028 from May 3, 2010 to December 15, 2017 or upon future issuance of new or revised WDRs.

D. Order No. R4-2007-0028-R04, adopted by this Regional Board on December 21, 2017, extended the expiration date of Order No. R4-2007-0028 from December 15, 2017 to March 31, 2018 or upon future issuance of new or revised WDRs.

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2 3. On October 1, 2015, the Regional Board directed the City to submit a Report of Waste Discharge (ROWD) for application of renewal of the City’s WDRs to discharge treated wastewater from the SPWRF to the percolation pond. On December 5, 2015, the City filed its ROWD for the SPWRF.

4. To verify the information provided in the ROWD, Regional Board staff conducted inspections of the SPWRF on December 8, 2015 and December 28, 2016, including the wastewater treatment processes, percolation ponds, and groundwater monitoring wells.

5. The purpose of this Order is to renew WDRs for the City’s SPWRF. This Order includes updates to effluent limitations, groundwater limitations, and Monitoring and Reporting Program (MRP) CI No. 9259 to ensure that the City’s discharge of waste complies with water quality objectives set forth in the Water Quality Control Plan for the Los Angeles Region: Basin Plan for the Coastal Watersheds of Los Angeles and Ventura Counties (Basin Plan) and is protective of beneficial uses.

BACKGROUND

6. Before 2010, the City’s wastewater was treated at the Santa Paula Wastewater Reclamation Plant (Plant), which discharged the treated wastewater to the Santa Clara River. That discharge was regulated by a National Pollutant Discharge Elimination System (NPDES) permit. Due to the age of the Plant, which was built in 1939, the City was unable to comply with the effluent limitations for biological oxygen demand (BOD), total suspended solids (TSS), turbidity, bacteria, residual chlorine, nitrate-nitrite, sulfate, and toxicity, as set forth in its NPDES permit. More than 3,000 violations at the Plant lead the Regional Board to engage in settlement discussions with the City, resulting in a Stipulated Consent Judgment and Final Order in 2007.

The City chose to build a new treatment plant, the SPWRF, to discharge to groundwater through percolation ponds. The City was required to complete construction of the new SPWRF by September 15, 2010 and be in full compliance with WDRs set forth in Order No. R4-2007-0028 by December 15, 2010.

7. Construction of the SPWRF began in July 2008 and was completed in December 2009. The SPWRF began accepting partial flow in April 2010 and then accepted all flow from the City in May 2010. The Plant built in 1939 was thereafter decommissioned.

8. According to the United States Census Bureau, approximately 19% of the population in the City have income levels below the poverty line, and approximately 25% of area in the City is categorized as a disadvantage community (less than 80% of the State's median household income) or a severely disadvantaged community (less than 60% of the State's median household income). The average sewer fee assessed for a single family was about $88, based on the City’s 2014 Water and Sewer Rate Study Results.

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3 9. Drinking water supplied to the City is produced from deep wells including Well 1-B, Well 11, Well 12, Well 13, and Well 14, which are owned and operated by the Water Division of the City and produce up to 10.6 MGD. Water produced at all five wells between 2010 and 2020 complied with all primary state and federal drinking water standards. Table 1 summarizes drinking water test results for total dissolved solids (TDS), sulfate, chloride, and boron from the City’s 2010-2020Annual Water Quality Reports, as compared to the groundwater quality objectives (GQOs) set forth in the Basin Plan.

Table 1. Drinking Water Quality (milligrams per liter, mg/L) Period TDS Sulfate Chloride Boron
2010 941 440 43 0.53
2011 918 428 41 0.54
2012 964 442 42 0.52
2013 693 208 47 0.52
2014 975 420 42 0.54
2015 941 405 44 0.47
2016 981 440 48 0.55
2017 924.2 393.6 47.8 0.4482
2018 924.2[1] 450.5 48 0.525
2019 1.036.7 477.7 48 0.4833
2020 1,060 446 49 0.6
GQOs 2,000 800 110 1.0
Table note: [1] Result sampled in 2017.

CURRENT FACILITY AND TREATMENT PROCESS DESCRIPTION

10. SPWRF and Vicinity
A. The SPWRF (34o 19’ 56.3” N, 119o 04’ 57.2” W) is sited on a 50-acre parcel along Calpipe Road and Todd Lane in Santa Paula, California (Figure 1). The SPWRF is approximately 1,200 feet southeast of Highway 126, approximately 1,000 southwest of Shell Road, and approximately 1,300 feet northwest of the Santa Clara River.

B. The SPWRF is located over the Santa Clara-Santa Paula Groundwater Basin (DWR Basin No. 4-4) (Figure 2).

11. SPWRF Treatment
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4 A. The SPWRF treats wastewater generated within the City and is designed for a flow of 4.2 MGD. Based on the discharge records between July 2010 and June 2017, the monthly average effluent discharged from the SPWRF ranged between 1.36 and 2.44 MGD, with an average of 1.86 MGD. The monthly average effluent discharge flow rates between February 2018 and December 2021 ranged from 1.03 to 3.4 MGD, with an average of 1.86 MGD.

B. The wastewater treatment process at the SPWRF (See Figure 3 for process flow schematic) consists of preliminary treatment (coarse and fine mechanical screening and grit removal at the Influent Lift Station), flow equalization (two flow equalization tanks), secondary treatment (three aeration tanks with nitrification and denitrification activated sludge), tertiary treatment (six membrane bioreactors, providing further carbonaceous oxidation, nitrification/denitrification and solids removal to meet the limits of the WDRs), and disinfection (UV). Treated and disinfected effluent is discharged to three percolation ponds (Figure 5). The returned activated sludge is treated at two of three aerobic digesters (one aerobic digester is for backup) after being thickened at two thickeners. The solids generated at the aerobic digesters receive final dewatering at the screw dewatering press. Final solids are hauled by Synargro to their South Kern Compost Manufacturing Facility where they are composted to the United States Environmental Protection Agency (USEPA) Class A reuse standards for agricultural reuse.

C. To address levels of chloride in the effluent, an advanced treatment system, consisting of reverse osmosis (RO), will be constructed at the SPWRF, which will be designed to reduce the chloride concentration in the effluent to 110 milligrams per liter (mg/L) or less. The RO system will consist of nanofiltration and RO units to reduce effluent chloride concentrations followed by a RO brine concentrator (Figure 4).

D. The City owns and operates the sewer collection system, which conveys domestic, commercial, and industrial wastewater to the SPWRF. Two industrial users within the City are Aurora Casting (metal foundry) and Saticoy Lemon (lemon packing house). The City is required to implement a Pretreatment Program and to comply with requirements for operation and maintenance of the sewer collection system. The City has been implementing an industrial wastewater Pretreatment Program for the SPWRF, which has been approved by the USEPA and the Regional Board.

E. Percolation Ponds
i. The three percolation ponds were built on approximately 34 acres of agriculture land (Figure 5) and are located along Todd Lane in the Santa Clara-Santa Paula Groundwater Basin area.
ii. The Regional Board classified the discharge to the percolation pond as a discharge of treated wastewater to land that is subject to WDRs.

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5 iii. A hydrologic model completed by the City in 2008 indicated that the percolation pond have a maximum discharge capacity of 2.6 MGD during wet years. Therefore, the allowable discharge of the SPWRF was reduced from 8 MGD to 2.6 MGD in Order No. R4-2010-0074 (amending Order No. R4-2007-0028).

During wet years, groundwater may rise to within 10 to 11 feet below ground surface in the area along the Santa Clara River.

The City owns and currently samples nine (9) groundwater monitoring wells, including MW-1, MW-2a, MW-3, MW-4, MW-5, MW-6, MW-7a, MW-8, and MW-9 (shown on Figure 5).

COMPLIANCE HISTORY

14. Based on data collected from July 2010 to June 2017, the City had the following number of exceedances recorded in the effluent and groundwater at the SPWRF, which are identified in Table 2.

Table 2. Number of Exceedances Recorded in Effluent and Groundwater Pollutants Effluent Groundwater
Chloride 84 174
Di(2-ethyl)phthalate 1
Dioxin 1
Total nitrogen 1
Nitrate plus nitrite 1
Sulfate 1
Chromium 5
Aluminum 10
Nickel 1
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6 Pollutants Effluent Groundwater
Boron 1
Multiple effluent and groundwater limitations were exceeded during the period between the 2nd quarter of 2010 and the 3rd quarter of 2011. Beginning with the 4 th quarter of 2011, the City had met all effluent limitations except for chloride. As previously noted, the SPWRF was not designed to remove chloride. The monthly effluent chloride concentration ranged from 125 to 166 mg/L and continuously exceeded the effluent chloride monthly average of 110 mg/L. Table 3 summarizes the annual average chloride concentrations in the SPWRF effluent.

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7 Monitoring data from the upgradient groundwater monitoring Well MW-3 indicates an annual average chloride groundwater concentration of 100 mg/L. This information suggests that the background groundwater chloride concentration was around 100 mg/L. Groundwater chloride concentrations at the downgradient groundwater monitoring Well MW-5 have been recorded between 135 and 155 mg/L, with an average of 142 mg/L. This data closely aligns with the SPWRF’s effluent chloride concentration of approximately 136 mg/L (Table 3). The groundwater and effluent data indicate that the chloride discharges from the SPWRF have impacted, and continue to impact, the receiving groundwater quality in the vicinity of the SPWRF.

Table 4. Annual Average Chloride Concentration[1] in Groundwater (mg/L) Prior to Discharge from SPWRF
Period Downgradient
MW-5
[2]
Downgradient
03N21W21G03S[3]
Upgradient
MW-3
[4]
2003 No data 113 No data
2004 No data 111 No data
2005 115 117 92
2006 114 112 88
2007 108 110 85
2008 87 100 78
2009 74 92 96
Range[5] 99.6 ± 16.3 107.9 ± 8.6 87.8 ± 6.1
After Discharge from SPWRF
2010 (Jul – Dec) 145 138 93
2011 145 146 112
2012 153 135 87
2013 155 136 103
2014 135 129 115
2015 136 129 108
2016 135 134 103
2017 121 131 105
2018 128.2 126.6 123.6
2019 128.8 129.4 163.1
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8 2020 129.5 127.4 126.3
2021 130.2 129.8 114.3
Range[5] 136.8 ± 10.5 132.6 ± 5.5 112.8 ± 19.5
Table Notes:
[1] All data collected from grab samples.
[2] Data were averaged from samples collected at the City-owned groundwater monitoring Well MW-5 with screen intervals of 42 to 62 feet, located approximately 50 feet downgradient from Percolation Pond 3.
[3] Water supply Well AW03 is owned and operated by a private entity. This well is located approximately 300 feet southwest of Well MW-5. The screen intervals of Well AW03 are from 80 to 120 below surface grade. Water produced at this well is used for agricultural irrigation only.
[4] Data were averaged from samples collected at the City-owned groundwater monitoring Well MW-3 with screen intervals of 25 to 45 feet, located approximately 1,800 feet upgradient from Percolation Pond 1.
[5] Data range is based on one standard deviation.

PLAN FOR CHLORIDE COMPLIANCE

17. The City’s efforts to reduce the chloride concentration in the influent to the SPWRF are summarized below:

A. The City identified that the influent to the SPWRF contains brine with elevated chloride concentration from Self-Regenerating Water Softeners (SRWS).

There are approximately 1,250 residential SRWS used in the City.

B. On September 5, 2006, the City established Ordinance No. 1160 prohibiting the installation or replacement of residential SRWS.

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9 18. To address the City’s chloride exceedances in the effluent and groundwater, the Regional Board required the City to submit a Chloride Reduction Workplan. Board staff also met with the City on several occasions to discuss the City’s chloride exceedances. A summary of these events are as follows:

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10 19. On July 9, 2015, the Regional Board adopted Resolution No. R15-007, an amendment to the Basin Plan that incorporated stakeholder-developed groundwater quality management plan for salts and nutrients in the Lower Santa Clara River groundwater basins. Groundwater quality management measures were developed by stakeholders as part of the Salt and Nutrient Management Plan (SNMP) for the Lower Santa Clara River Basins in Ventura County. Such plans are a requirement of the State Water Resources Control Board’s (State Water Board) Recycled Water Policy and are intended to maintain high quality waters and to protect the beneficial uses of groundwater while promoting recycled water use throughout the state. The SNMP utilized a groundwater quality model that characterized the water quality in the Santa Paula Basin and examined the degree of impairment to water quality in the Basin. The model shows there is available assimilative capacity for salts and nutrients, including chloride, in most areas of the Santa Paula Basin to allow for recycled water projects consistent with the Recycled Water Policy. As described below, the City is planning to recycle effluent that is currently discharged to the percolation pond.

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11 On December 14, 2016, Regional Board staff met with the City to discuss the results of the Chloride Model, which evaluated compliance with the groundwater quality objectives beneath and adjacent to the three percolation ponds, for various discharge scenarios. Based on Regional Board staff’s comments, the City implemented additional discharge scenarios in the Chloride Model, which was discussed in meetings held on February 8, 2017, February 17, 2017, July 24, 2017, and August 7, 2017.

Table 5. Groundwater Chloride Transportation Model – Continuous Discharge Chloride Effluent
Concentration
(mg/L)
Flow to
Percolation Ponds
(MGD) (% of 2.2
MGD)
Daily Allowable
Effluent Mass
Load to
Groundwater
(lbs)
Chloride
Groundwater
Concentration at
150 feet
(mg/L)
135 0.07 (3.2%) 79 110
130 0.1 (4.5%) 108 110
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12 Chloride Effluent
Concentration
(mg/L)
Flow to
Percolation Ponds
(MGD) (% of 2.2
MGD)
Daily Allowable
Effluent Mass
Load to
Groundwater
(lbs)
Chloride
Groundwater
Concentration at
150 feet
(mg/L)
125 0.13 (5.9%) 135 110
120 0.2 (9.1%) 200 110
115 0.4 (18.2%) 384 110

25. Due to the following reasons, the City cannot immediately comply with the chloride effluent and groundwater limitations prescribed in this Order: (1) elevated chloride concentrations in the influent, (2) the wastewater treatment process not currently designed to remove chloride out of the waste stream, and (3) time needed to DRAFT
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13 construct the advanced wastewater treatment system with RO. In addition, the current progress of the City’s SRWS Buyback Program does not reliably ensure that the SPWRF will comply with the chloride effluent and groundwater limitations.

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14 Executive Order B-30-15, issued on April 29, 2015, recognizing the challenges posed by climate change, directed state agencies to take climate change into account in their planning decisions, guided by the following principles: Priority should be given to actions that both build climate preparedness and reduce greenhouse gas emissions; where possible, flexible and adaptive approaches should be taken to prepare for uncertain climate impacts; actions should protect the state's most vulnerable populations; and natural infrastructure solutions should be prioritized.

Climate change may also increase drought and related impacts such as reduced potable water supply and/or changing water supplies, which may be of less quality.

APPLICABLE LAWS, PLANS, POLICIES, AND REGULATIONS

29. Water Quality Control Plan for the Los Angeles Region: Basin Plan for the Coastal Watersheds of Los Angeles and Ventura Counties (Basin Plan) - On June 13, 1994, the Regional Board adopted a comprehensive revision to the Basin Plan. The Basin DRAFT
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15 Plan: (i) designates beneficial uses for surface and groundwater, (ii) establishes narrative and numeric water quality objectives that must be attained or maintained to protect the designated beneficial uses, and (iii) sets forth implementation programs to achieve those objectives for all waters addressed through the Basin Plan. The Basin Plan also incorporates State Water Board Resolution No. 68-16 (see finding below for detail). In addition, the Basin Plan incorporates applicable State and Regional Board plans and policies and other pertinent water quality policies and regulations. The Basin Plan has been amended occasionally since 1994, including recent administrative updates. The requirements in this Order implement the Basin Plan.

Table 6. Basin Plan Beneficial Uses of Groundwater
Receiving Water Beneficial Use(s)
Santa Clara-Santa Paula Groundwater
(DWR Basin No. 4-4)
Existing:

Municipal and domestic supply (MUN),
industrial service supply (IND), industrial
process supply (PROC), and agricultural
supply (AGR)

32. Domestic Water Quality – In compliance with California Water Code section 106.3, it is the policy of the State of California that every human being has the right to safe, clean, affordable, and accessible water adequate for human consumption, cooking, DRAFT
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16 and sanitary purposes. This Order promotes that policy by requiring discharges to meet MCLs implemented by the Basin Plan that are designed to protect human health and ensure that water is safe for domestic use.

Excepting chloride (discussed below), the SPWRF's discharge is high quality, tertiary-treated effluent meeting groundwater quality objectives in the Basin Plan and MCLs for drinking water. The Regional Board finds that the discharge, as allowed in DRAFT
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17 this Order, is consistent with Resolution No. 68-16 since this Order: (1) requires compliance with the requirements set forth in this Order, including the use of best practicable treatment and control of the discharges, (2) requires implementation of a Monitoring and Reporting Program (MRP); and (3) requires that the discharges comply with effluent limits to meet water quality objectives. This Order establishes limitations and requirements that will not unreasonably threaten present and anticipated beneficial uses or result in receiving ground water quality that exceeds water quality objectives set forth in the Basin Plan. Limitations for each waste constituent are based on the most stringent applicable water quality objectives to protect the most sensitive beneficial use of the receiving waterbody; thus, all beneficial uses are protected. To ensure such protection, a vigorous monitoring plan is also adopted with this Order. This Order contains requirements for implementing Best Practicable Technology and Control (BPTC). Accordingly, the discharge is consistent with the antidegradation provisions of Resolution 68-16. Based on the results of wastewater treatment and monitoring of effluent and groundwater quality, the Regional Water Board may open this Order to reconsider groundwater limitations and other requirements to comply with Resolution 68-16, if necessary.

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18 The City is also a small low-income community. The costs of RO treatment depend on the volume of effluent or groundwater to be treated in order to meet the groundwater quality objectives specified in the Basin Plan. To defray the costs of the upgrade, the City has submitted a State Water Board Clean Water State Revolving Fund application with the State Water Board Division of Financial Assistance. The City plans to complete construction of the RO system within two years of receiving the Final Funding Agreement but no later than December 2024.

The Regional Board finds it appropriate to require the City to continue to implement its approved Pretreatment Program.

39. Endangered Species Act Requirements - This Order does not authorize any act that results in the taking of a threatened or endangered species or any act that is now prohibited, or becomes prohibited in the future, under either the California Endangered Species Act (Fish and Game Code, §§ 2050 to 2097) or the Federal Endangered Species Act (16 U.S.C. §§ 1531 to 1544). This Order requires DRAFT
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19 compliance with effluent limits, groundwater quality objectives, and other requirements to protect the beneficial uses of waters of the state. The Discharger is responsible for meeting all requirements of the applicable Endangered Species Act.

41. Pursuant to CWC section 13263, the requirements of this Order take into consideration the provisions of CWC section 13241, including the following factors.

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20 D. Economic considerations;
The City of Santa Paula is identified as a disadvantaged community as defined in CWC section 79505.5. A “disadvantaged community means a community with an annual median household income that is less than 80 percent of the statewide annual median household income.” According to the United States Census Bureau, the 2019 California median household income is $80,440 and the City of Santa Paula median household income is $60,468.

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21 NOTIFICATION

43. The Regional Board, in a public meeting, heard and considered all comments pertaining to the discharge.

I. INFLUENT LIMITATIONS AND REQUIREMENTS
Influent wastewater shall be limited to wastewater generated within the jurisdiction of the City.

II. EFFLUENT LIMITATIONS
A. Discharges from the SPWRF shall not exceed the maximum effluent volume of

4.2 MGD and the quarterly average effluent volume of 2.6 MGD.

B. Tertiary-treated effluent shall not exceed the effluent limitations in Table 8 below.

Table 8. Effluent Limits
Constituents Units Monthly Average Daily Maximum
Oil and grease mg/L 10[1] 15[1]
Total suspended solids
mg/L 10[1] 15[1]
%removal ≥85[2] None
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22 Constituents Units Monthly Average Daily Maximum
BOD5@20°C
mg/L 10[1] 15[1]
%removal ≥85[2] None
Ammonia as nitrogen +
nitrate as nitrogen +
nitrite as nitrogen
mg/L 10[3] None
Nitrite as nitrogen mg/L 1 None
Total dissolved solids mg/L 2,000[4] None
Sulfate mg/L 800[4] None
Boron mg/L 1.0[4] None
Chloride mg/L 110[4] None
Table Notes:
[1] Limit is based on best professional judgment. Limits adopted by this Regional Board exist in the permits for tertiary-treated wastewater treatment plants. [2] Limit is based on secondary treatment requirements, 40 C.F.R. section 133.102. [3] Limit is based on the Load Allocations for nonpoint sources set forth in the Santa Clara River Nitrogen Compounds TMDL, Resolution No. 2003-011. [4] Limit based on Basin Plan Groundwater Quality Objective.

C. The pH of effluent discharged shall at all times be within the range of 6.5 to 8.5.

Excursion from this range shall not be considered a violation provided the duration is not more than 10 minutes in a 24-hour period, and pH shall at all times be within 6 to 9.

D. Effluent shall, at all times, be adequately disinfected and oxidized and shall meet the following effluent limitations:

2. the number of total coliform bacteria shall not exceed an MPN of 240 per 100 milliliters in more than one sample in any 30 day period.

Samples shall be collected at a time when wastewater flow and characteristics are most demanding (e.g., during peak flows) on treatment facilities and disinfection processes.

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23 E. A filtered wastewater shall be an oxidized wastewater that has been passed through a membrane so that the turbidity of the filtered wastewater does not exceed any of the following:

1. An average of 2 Nephelometric Turbidity Units (NTU) within a 24-hour period;

2. 5 NTU more than 5 percent of the time within a 24-hour period; and

3. 10 NTU at any time.

2. Secondary MCLs specified in CCR, Title 22, Division 4, Chapter 15 (Domestic Water Quality and Monitoring Regulations), Section 64449, Table 64449-A (Attachment A-5 of this Order).

III. GROUNDWATER LIMITATIONS
A. The City is prohibited from negatively altering the quality or elevation of the underlying groundwater.

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24 B. The discharge of treated wastewater from the SPWRF shall not cause an exceedance of the following groundwater limitations in Table 9 below. Except for chloride, compliance with the groundwater limitations will be determined by the groundwater samples collected from monitoring wells located within or on the boundary of the percolation pond. Compliance with the chloride groundwater limitation will be determined by the groundwater samples collected from monitoring wells located 150 feet away from the percolation pond. The specific monitoring well locations will be determined through the Monitoring and Reporting Program (MRP) (Attachment E). Per Section IV.C.3 of the MRP, the City is required to submit a work plan proposing a modified groundwater monitoring network by May 1, 2018.

C. Groundwater shall not exceed the MCLs specified in Attachments A-1 to A-6.

E. The minimum vertical separation between the bottom of the percolation pond and groundwater table shall be five feet.

IV. GENERAL REQUIREMENTS
A. The SPWRF and areas where any potential pollutants are stored shall be adequately protected from inundation and damage by storm flows and runoff.

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25 C. The SPWRF and the collection system that is a part of the treatment and disposal system shall be maintained in such a manner that prevents sewage from surfacing or overflowing at any location.