Agenda Packet — Redding City Council, June 21, 2022 (part 5 of 6)

TABLE OF CONTENTS

1. INTRODUCTION.................................................................................................. 4

2. CLEAR CREEK WASTEWATER TREATMENT PLANT ...................................... 4

3. STILLWATER WASTEWATER TREATMENT PLANT......................................... 5

4. DETERMINING POLLUTANTS OF CONCERN................................................... 6

4.1 NPDES PERMIT LIMITS FOR CLEAR CREEK WWTP................................. 6

4.2 NPDES PERMIT LIMITS FOR STILLWATER WWTP.................................... 7

4.3 WATER QUALITY STANDARDS ................................................................... 8

4.4 SLUDGE QUALITY STANDARDS ............................................................... 10

4.5 TREATMENT PLANT INHIBITION............................................................... 11

5. SAMPLING METHODOLOGY............................................................................ 12

5.1 WASTEWATER TREATMENT PLANT SAMPLING..................................... 13

5.2 DOMESTIC & COMMERCIAL COLLECTION SYSTEM MONITORING ...... 13

6. STATISTICAL ANALYSIS OF DATA.................................................................. 14

7. MAXIMUM ALLOWABLE LOADINGS................................................................ 14

8. INDUSTRIAL USER NOTICE............................................................................. 15

9. LOCAL LIMITS UPDATES ................................................................................. 16

10. FUTURE UPDATES & SUPPORTING DOCUMENTATION............................... 18

LIST OF TABLES
TABLE 1. CLEAR CREEK WWTP DESIGN AND OPERATING DATA........................... 5 TABLE 2. STILLWATER WWTP DESIGN AND OPERATING DATA ............................. 6 TABLE 3. CLEAR CREEK WWTP NPDES EFFLUENT LIMITS..................................... 7 TABLE 4. STILLWATER WWTP NPDES EFFLUENT LIMITS........................................ 7 TABLE 5.1. CHRONIC WATER QUALTIY STANDARDS............................................... 8 TABLE 5.2. CHRONIC WATER QUALTIY STANDARDS RECEIVING STREAM FLOW9 TABLE 6.1 ACUTE WATER QUALITY STANDARDS..................................................... 9 TABLE 6.2 ACUTE WATER QUALITY STANDARDS RECEIVING STREAM FLOW..... 9 TABLE 7. FEDERAL EPA 503.13 SLUDGE CRITERIA DRY WEIGHT mg/kg ............. 10 TABLE 8. CALIFORNIA 22 CCR 66261 STATE SLUDGE CRITERIA, mg/kg .............. 11 TABLE 9. ACTIVATED SLUDGE INHIBITION VALUES............................................... 11 TABLE 10. NITRIFICATION INHIBITION VALUES....................................................... 12 TABLE 11. ANAEROBIC DIGESTER INHIBITION VALUES ........................................ 12 TABLE 12. SIGNIFICANT INDUSTRIAL USERS.......................................................... 15 TABLE 13. CITY OF REDDING END OF PROCESS LOCAL LIMITS .......................... 17 Packet Pg. 714 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) City of Redding Local Limits July 2020 Update

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APPENDICES

APPENDIX A DIAGRAMS
A-1 Schematic Diagram of Clear Creek WWTP
A-2 Schematic Diagram of Stillwater WWTP

APPENDIX B LOCAL LIMIT CALCULATIONS
B-1 Clear Creek WWTP Local Limits Calculation Spreadsheets B-2 Stillwater WWTP Local Limits Calculation Spreadsheets B-3 City of Redding Local Limits Calculation Summaries
B-4 Wastewater Treatment Plant Removal Efficiency and Flow B-5 Significant Industrial User Flow

APPENDIX C SACRAMENTO RIVER DATA
C-1 Upstream Sacramento River data
C-2 Sacramento River Water Quality Limits

APPENDIX D SLUDGE DATA
D-1 Clear Creek WWTP’s sludge volume and % solids Data
D-2 Stillwater WWTP’s sludge volume and % solids Data
D-3 State and Federal Sludge Hazardous Waste Regulations D-4 EPA 503 Federal Sludge Land Application Standards

APPENDIX E DOMESTIC SAMPLING DATA
E-1 Clear Creek WWTP’s Domestic & Commercial Sampling Data E-2 Stillwater WWTP’s Domestic & Commercial Sampling Data E-3 Domestic and Commercial Sampling Locations
Packet Pg. 715 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) City of Redding Local Limits Final Report 2020

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1. INTRODUCTION
The City of Redding’s Wastewater Department Pretreatment Program implemented local wastewater discharge limits (local limits) for its permitted industrial users in 2015. EPA requires the city to develop technically-based local limits for each individual wastewater treatment plant. The City of Redding developed local limits for each of its two wastewater treatment plants and has chosen the most restrictive limit as a city-wide discharge limit.

This approach protects the collection systems and the wastewater treatment plants. This approach also ensures that all users in the city are subject to the same standards regardless of their geographical location within the city. For relative ease of implementation, end of process, uniform concentration, daily maximum local limits have been developed for the City of Redding (city).

As part of the city’s obligations under the National Pollutant Discharge Elimination System (NPDES) permits for both wastewater treatment plants, and according to the Code of Federal Regulations, 40 CFR 122.44(j)(2)(ii), the local limits must be re-evaluated every five (5) years. This report is an update and re-calculation of the original local limits, based on the most recent testing data, NPDES permit limits, and current conditions at each wastewater treatment plant. Local limits apply to wastewater discharged to the City of Redding from industrial sources at the end of industrial processes. Based on the new calculations, the original local limits for copper, zinc, silver, and mercury are being reduced to ensure ongoing protection of the publicly owned treatment works (POTW).

2. CLEAR CREEK WASTEWATER TREATMENT PLANT
The Clear Creek Wastewater Treatment Plant (WWTP) is a tertiary wastewater treatment plant that has been in operation since 1979 and discharges treated wastewater to the Sacramento River. Clear Creek WWTP design data is summarized in Table 1. Figure 2 shows a schematic layout of the facility.

Clear Creek WWTP is operated as follows: Wastewater is pumped into the plant from the influent pump station and treated using preliminary screening, grit removal, primary clarification, activated sludge using coarse and fine bubble diffusers, secondary clarification, multimedia filtration, chlorination with gaseous chlorine and de-chlorination with sulfur dioxide.1 A portion of the plant effluent is used for on-site landscape irrigation and plant wash down.

Primary biosolids were treated with anaerobic digestion followed by dewatering in a plate and frame filter press through 2015. The press was decommissioned and centrifuges were installed in 2016. Waste Activated Sludge (WAS) was treated in a facultative sludge lagoon. Solids were dredged to adjacent dry lagoon(s) for air drying in the summer months. These biosolids were hauled to the Anderson/Waste Management Landfill.

Sludge is currently hauled and disposed of at Shasta County's West Central Sanitary Landfill (Class III).

Packet Pg. 716 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) City of Redding Local Limits Final Report 2020

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Removal efficiencies were calculated for each pollutant of concern for the primary, secondary, and tertiary treatment operations. Removal efficiencies were based on a compilation of both annual treatment plant monitoring and additional monitoring performed specifically for the local limits study. Data points that were below the detection levels were considered to be one-half the detection limit, per EPA Local Limits Development Guidance2. See Appendix B for data summaries and calculations.

TABLE 1. CLEAR CREEK WWTP DESIGN AND OPERATING DATA
Parameter Units Design*
Permitted Average Dry Weather Flow (ADWF) MGD 8.8
Facility Design Flow (ADWF) MGD 9.4
Peak Design Wet Weather Flow (PWWF) MGD 40
Biochemical Oxygen Demand (BOD) Average Dry Weather (ADW) lbs/day 15,900 BOD, Peak Day - Dry Weather lbs/day 30,200
Total Suspended Solids (TSS) ADW lbs/day 17,300
TSS, Peak Day - Dry Weather lbs/day 36,300
Total Kjeldahl Nitrogen (TKN) ADW lbs/day 1,600
TKN, Peak Day - Dry Weather lbs/day 2,000
*2010 design flows and loads are referenced from the facilities plan dated May 2005.

3. STILLWATER WASTEWATER TREATMENT PLANT
The Stillwater Wastewater Treatment Plant (WWTP) is a tertiary wastewater treatment plant that has been in operation since 1992 and discharges treated wastewater to the Sacramento River. Stillwater WWTP design data is summarized in Table 2. Figure 3 shows a schematic layout of the facility.

Stillwater WWTP is operated as follows: Wastewater flows by gravity into the plant from the collection system and is treated using preliminary screening, activated sludge using an anoxic zone followed by activated sludge using compressed air with coarse and fine bubble diffusion, secondary clarification, sand filtration, chlorination with gaseous chlorine and de-chlorination with sulfur dioxide.3 A portion of the plant effluent is used for on-site landscape irrigation, plant wash down, and crop irrigation by an adjacent land owner.

Aerobically digested sludge is dewatered using a gravity belt thickener and a belt press.

Polymer is added to aid the dewatering process. Dewatered sludge is hauled for disposal at West Central Landfill. Land application of sludge was performed in the past and may be explored again in the future.

Packet Pg. 717 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) City of Redding Local Limits Final Report 2020

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Removal efficiencies were calculated for each pollutant of concern for the secondary, and tertiary treatment operations. (Stillwater WWTP does not have primary clarifiers.) Removal efficiencies were based on a compilation of both annual treatment plant monitoring and additional monitoring performed specifically for the local limits study. Data points that were below the detection levels were considered to be one-half the detection limit, per EPA Local Limits Development Guidance2. See Appendix B for data summaries and calculations.

TABLE 2. STILLWATER WWTP DESIGN AND OPERATING DATA
Parameter Units Design*
Average Dry Weather Flow (ADWF) MGD 4
Permitted ADWF MGD 3.4
Peak Wet Weather Flow MGD 14.4
Biochemical Oxygen Demand (BOD) ADW lbs/day 10,000
BOD, Maximum Monthly lbs/day 11,700
Total Suspended Solids (TSS) ADW lbs/day 6,700
TSS, Maximum Monthly lbs/day 8,300
Total Kjeldahl Nitrogen (TKN) ADW lbs/day 854
TKN, Maximum Monthly ADW lbs/day 1,520
TKN, Maximum Day ADW lbs/day 2,305
*Original design flows and loads referenced from the facilities plan dated November 2008.

4. DETERMINING POLLUTANTS OF CONCERN
Pollutants of concern were determined during the original study in 2015. No new pollutants of concern have been added to the NPDES permit effluent limits for either wastewater treatment plant. No new pollutants of concern have been added to this local limits revision.

4.1 Clear Creek WWTP NPDES Permit Limits and Effluent Quality The following is a summary of the pollutant limitations stated in NPDES Permit No.

CA0079731, Wastewater Discharge Requirements for City of Redding’s Clear Creek WWTP.

Packet Pg. 718 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) City of Redding Local Limits Final Report 2020

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TABLE 3. CLEAR CREEK WWTP NPDES EFFLUENT LIMITS
Parameter Units Average
Monthly
Average
Weekly
Maximum
Daily
Instantaneous
Min
Instantaneous
Max
Biochemical Oxygen Demand
(BOD) 5 Day @ 20°C
mg/L
lbs/day*
10 734
15 1101
30 2202
-- --
Total Suspended Solids
(TSS)
mg/L
lbs/day*
10 734
15 1101
30 2202
– –
pH standard
units
– – – 6.0 8.0
Ammonia, Nitrogen Total (as
N)
mg/L
lbs/day*

2.80 250

4.83 354
-- -- --
Nitrate plus Nitrite, Total (as
N)
mg/L 19.9 27.7 -- -- --
Copper (Total) μg/l 20.2 – 32.0 – –
Chlorodibromomethane μg/l 3.56 – 7.20 – –
Dichlorobromomethane μg/l 15.56 – 29.22 – –
Zinc (Total) μg/l 79.7 – 116.7
*Mass based effluent limitations are based on a permitted average dry weather flow of 8.8 mgd.

4.2 Stillwater WWTP NPDES Permit Limits and Effluent Quality The following is a summary of the pollutant limitations stated in NPDES Permit No.

CA0082589, Wastewater Discharge Requirements for City of Redding Stillwater Wastewater Treatment Facility.

TABLE 4. STILLWATER WWTP NPDES EFFLUENT LIMITS
Parameter Units Average
Monthly
Average
Weekly
Maximum
Daily
Instantaneous
Minimum
Instantaneous
Maximum
Biochemical Oxygen Demand
(BOD) 5 Day @ 20°C
mg/L 10 15 -- – --
Total Suspended Solids (TSS) mg/L 10 15 -- – --
Ph units -- – – 6.0 8.5
Copper (Total Rec) μg/L 33 – 52 – --
Zinc (Total Rec) μg/L 180 – 300 – --
Cyanide (Total) μg/L 14 – 28 – --
Chlorodibromomethane μg/L 9.2 – 24 – --
Dichlorobromomethane μg/L 43 – 89 – --
Ammonia Nitrogen, Total
(as N)
mg/L
lbs/day*

0.62 18

1.4 40
-- – --
Nitrite + Nitrate (as N) mg/L 45 68 -- – --
*Based on a design average daily discharge flow of 3.4 million gallons per day (MGD) Packet Pg. 719 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) City of Redding Local Limits Final Report 2020

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4.3 Water Quality Standards
The Clear Creek WWTP outfall is located approximately 0.5 miles downstream of the confluence of Clear Creek and the Sacramento River (Figure 1). The Stillwater WWTP outfall is located approximately 6.5 miles downstream of Clear Creek WWTP’s outfall.

Receiving water quality standards are found in the California Toxics Rule (CTR)4 the Central Valley Regional Water Quality Control Board’s Basin Plan5, the Policy for Implementation of Toxics Standards for Inland Surface Waters, Enclosed Bays and Estuaries of California (SIP)
6 and EPA Ambient Water Quality Criteria7 for protection of fresh water aquatic life. Hardness-based criteria are listed in the CTR for cadmium, chromium, copper, lead, nickel, silver and zinc. More restrictive hardness-based criteria for cadmium and zinc are included in the Basin Plan (Appendix 3)5.

Sacramento River flows are relatively high compared to WWTP effluent flows. The chronic and acute water quality standards reference the 7Q10 and 1Q10 receiving water flows, respectively. These flow rates are documented in the treatment plant NPDES permits and summarized in tables below. The water quality criteria (WQC) were not a direct limiting factor in development of these local limits.

Table 5.1 Chronic Water Quality Standards (mg/l)
Pollutant Water Quality Objective,
Fresh Water,
Chronic (4-day average) 7
Basin Plan, Trace
Element Water
Quality Objective,
(Table 3-1)5
Redding
Chronic Water
Quality Standard
Chosen
Arsenic 0.150 (California Toxics Rule) 0.01 0.01
Cadmium 0.0011 (California Toxics Rule) 0.00022 0.00022 Chromium 0.084 (National Toxics Rule) Not listed 0.084
Copper 0.0041(California Toxics Rule) 0.0056 0.0041
Lead 0.00092(California Toxics Rule) Not listed 0.00092 Mercury 0.00077(USEPA) Not listed 0.00077
Molybdenum 0.01 (Water Quality for
Agriculture)
Not listed for
Sacramento River

0.01 Nickel 0.024 (California Toxics Rule) Not listed 0.024 Selenium 0.005 (National Toxics Rule) Not listed for
Sacramento River

0.005
Silver 0.0007 (California Toxics Rule
1-hour average, not 4-day)

0.01 0.0007
Zinc 0.054 (California Toxics Rule) 0.016 0.016
Ammonia 0.49 (US EPA) Not listed 0.49
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Table 5.2 Chronic Water Quality Standards Receiving Stream Flow Table 6.1 Acute Water Quality Standards (mg/l)
Pollutant Water Quality Objective,
Fresh Water Criteria,
Acute, (1-hour average) 7
Basin Plan, Trace
Element Water
Quality Objective,
(Table 3-1)5
Redding
Acute Water
Quality Standard
Chosen
Arsenic 0.340 (California Toxics Rule) 0.01 0.01
Cadmium 0.0016 (California Toxics Rule) 0.00022 0.00022 Chromium 0.26 (National Toxics Rule) Not listed 0.26
Copper 0.0057 (California Toxics Rule) 0.0056 0.0056
Lead 0.024 (California Toxics Rule) Not listed 0.024
Mercury 0.0014 (US EPA) Not listed 0.0014
Molybdenum 0.01 (Water Quality for
Agriculture)
Not listed for
Sacramento River

0.01 Nickel 0.22 (California Toxics Rule) Not listed 0.22 Selenium 0.020 (National Toxics Rule) Not listed for
Sacramento River

0.020
Silver 0.0071 (California Toxics Rule) 0.01 0.00071
Zinc 0.054 (California Toxics Rule) 0.016 0.016
Ammonia 1.77 (USEPA National
Recommendation)
Not listed 1.77
Table 6.2 Acute Water Quality Standards Receiving Stream Flow Wastewater
Treatment
Plant
7 Q 10 cfs
(cubic feet per second)
Represents the lowest average 7
consecutive day flow with an average
reoccurrence frequency of once in 10
years
7 Q 10 (MGD)
1 MGD = 1.547 cfs
CCWWTP 3240 cfs 2094 MGD
SWWTP 3299 cfs 2132 MGD
Wastewater
Treatment
Plant
1 Q 10 cfs
(cubic feet per second)
Represents the lowest 1-day flow with
an average reoccurrence frequency of
once in 10 years (1Q10).
1 Q 10 (MGD)
1 MGD = 1.547 cfs
CCWWTP 3057 cfs 1976 MGD
SWWTP 3298 cfs 2132 MGD
Packet Pg. 721 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) City of Redding Local Limits Final Report 2020

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4.4 Sludge Quality Standards
Sludge from Clear Creek WWTP and Stillwater WWTP is typically disposed at the Shasta County’s West Central Landfill in Igo, CA. Sludge was tested at least annually through 2017. In 2018 the frequency of sludge testing increased to quarterly to meet the landfill’s acceptance requirements. Prior to 2015, sludge from both treatment plants was either land applied at the Redding Municipal Airport under the City of Redding Biosolids Land Application Permit, Order 5-01-226 or was hauled to West Central landfill. Since 2015, sludge has been hauled to landfill disposal at West Central Landfill, except for a portion of the Clear Creek WWTP sludge that was hauled to the Anderson Landfill during 2018.

Since no sludge has been land applied during the course of this study, the calculations were performed and are included in this report only for informational purposes. When sludge is land applied, the city’s land application standards are determined by EPA 503 sludge regulations and are expressed as a unit of pollutant per unit of sludge in mg/kg dry weight. Federal Land Application limits (40 CFR 503, Table 3) are part of the spreadsheets used to calculate local limits.

The ability to haul sludge to a landfill depends on the sludge meeting the California Hazardous Waste Limits testing requirements, Title 22 of the California Code of Regulations (CCR), which are expressed in mg/kg wet weight. The local limits calculation spreadsheet uses dry-weight based sludge disposal criteria; therefore, the California limits have to be adjusted in the spreadsheets to the corresponding moisture content of the sludge. The limits are expressed as concentrations in mg/L. The federal Hazardous Waste Regulations are listed at 40 CFR 261. The hazardous waste limits were a determining factor in the updated local limits.

Table 7. Federal EPA 503.13 Sludge Criteria Dry Weight mg/kg Pollutant EPA 503.13
Ceiling
Concentrations
(mg/kg dry weight)
EPA 503.13
Pollutant
Concentrations
(mg/kg dry weight)
Redding
503 Sludge Criteria
mg/kg Chosen
Arsenic 75 41 41
Cadmium 85 39 39
Chromium Not listed Not listed Not listed
Copper 4300 1500 1500
Lead 840 300 300
Mercury 57 17 17
Molybdenum 75 Not listed 75
Nickel 420 420 420
Selenium 100 100 100
Silver Not listed Not listed Not listed
Zinc 7500 2800 2800
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Table 8. California, 22 CCR 66261.24, State Sludge Criteria, mg/kg * Dry weight criteria = Wet weight limit divided by % solids as a decimal Ex. 2272.73 mg/kg DRY = 500 mg/kg WET ÷ (22.0% solids ÷ 100)

4.5 Treatment Plant Inhibition
Pollutants can interfere with the biological and/or chemical processes of wastewater treatment, thereby resulting in reduced plant performance or plant upset. In-plant inhibition limits refer to activated sludge, nitrification, or anaerobic digester threshold inhibition levels of a given pollutant. Default values for treatment plant interference and process inhibition were used. In most cases, the most conservative (lowest) default value for inhibition was used in the spreadsheet calculations. However, higher values for inhibition were chosen in situations where the literature values varied widely. Summaries of the literature values and the values chosen for calculations in this report are included in the tables below.

Table 9. Activated Sludge Inhibition Values (in mg/l)
Pollutant Activated Sludge
Inhibition values in EPA
Local Limits Guidance2
Activated Sludge Inhibition
values in EPA Preventing
Interference Guidance8
Redding Activated
Sludge Inhibition
Value Chosen
Arsenic 0.1 0.04 - 0.4 0.1
Cadmium 1.0 - 10 0.5 - 10 0.5
Chromium 1.0 - 100 0.1-20 1.0
Copper 1.0 0.1 – 1.0 0.1
Lead 1.0 - 100 0.1 - 10 0.1
Mercury 0.1 – 1.0 0.1 – 5.0 0.1
Molybdenum No value No value No value
Nickel 1.0 – 5.0 1.0 – 5.0 1.0
Selenium No value No value No value
Silver No value 0.03 – 5.0 0.1
Zinc 0.3-10 0.3 - 20 0.3
Ammonia 480 >480 480
Pollutant CA TTLC,
Total Threshold Limit
Concentration
mg/kg WET weight
Clear Creek WWTP
State Sludge Criteria

22.0% solids,
Dry weight calculation*
Stillwater WWTP State
Sludge Criteria 14%
solids,
Dry weight calculation*
Arsenic 500 2272.73 3571.43
Cadmium 100 454.55 714.29
Chromium 2500 11363.64 17857.14
Copper 2500 11363.64 17857.14
Lead 1000 4545.45 7142.86
Mercury 20 90.91 142.86
Molybdenum 3500 15909.09 25000
Nickel 2000 9090.91 14285.71
Selenium 100 454.55 714.29
Silver 500 2272.73 3571.43
Zinc 5000 22727.27 35714.29
Packet Pg. 723 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) City of Redding Local Limits Final Report 2020

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Table 10. Nitrification Inhibition Values (in mg/l)
Pollutant Nitrification Inhibition
values in EPA Local
Limits Guidance2
Nitrification Inhibition values
in EPA Preventing
Interference Guidance8
Redding Nitrification
Inhibition Value
Chosen
Arsenic 1.5 1.5 1.5
Cadmium 5.2 5.0 – 9.0 5.0
Chromium 0.25 - 1.9 0.25 – 1.0 0.25
Copper 0.05 - 0.48 0.05 - 0.5 0.05
Lead 0.5 0.5 - 1.7 0.5
Mercury 0.25 – 5.0 2.0 - 12.5 2.0
Molybdenum No value No value No value
Nickel No value 0.25 – 5.0 0.25
Selenium No value No value No value
Silver No value 0.25 0.25
Zinc 0.08 - 0.5 0.01 – 1.0 0.29
Ammonia No value No value No value
Table 11. Anaerobic Digester Inhibition Values (in mg/l) Pollutant Anaerobic Digester
Inhibition values in
EPA Local Limits
Guidance2
Anaerobic Digester
Inhibition values in EPA
Preventing Interference
Guidance8
Redding Anaerobic
Digester Inhibition
Value Chosen
Arsenic 1.6 0.1 – 1.0 1.6
Cadmium 20 0.02 – 1.0 10
Chromium 130 1.5 - 50 65
Copper 40 0.5 - 100 50
Lead 340 50 - 250 195
Mercury No value 1400 1400
Molybdenum No value No value No value
Nickel 10 - 136 2.0 - 200 100
Selenium No value No value No value
Silver 13 - 65 No value 39
Zinc 400 1.0 - 10 200
Ammonia 1500 – 8000 1500 – 3000 Not applicable*
* The ammonia inhibition value does not apply to local limits concentrations because approximately 99% of the ammonia entering the WWTP is removed by the biological process prior to waste entering the anaerobic digester.

5. SAMPLING METHODOLOGY
Sample handling and Chain of Custody procedures were followed and samples were delivered to state certified analytical laboratories for testing. Copies of the original laboratory data and Chain of Custody are available in a separate 2020 Local Limits Update Data Supplement.

Packet Pg. 724 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) City of Redding Local Limits Final Report 2020

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5.1 Wastewater Treatment Plant Sampling
Treatment plant samples for metals analysis, BOD, TSS, and ammonia were collected as flow-proportional 24-hour composites using automatic composite sampling machines.

A. Sampling Locations:
1) WWTP influent
2) primary effluent (Clear Creek WWTP only, Stillwater WWTP does not have primary clarifiers)
3) secondary effluent
4) filtered final effluent
B. Sampling Frequencies
WWTP samples were collected at least once per year for influent and effluent. Summary tables of analytical results are presented in Appendices C-1 and C-2. Samples were collected between 2013-2019. Data from the primary and secondary effluent at Clear Creek WWTP and from secondary effluent at Stillwater was not routinely collected during 2013-2019. These sample locations were added back into the annual sampling procedures beginning in summer 2019. Historical data for metals removal is being used for the primary percent removal data. Total plant removal data is being used in place of the secondary percent removal data due to discrepancies with historical secondary percent removal data being larger than current total plant percent removal.

C. Flow Data
Wastewater flow is the total flow through each plant. The annual daily average influent at Clear Creek WWTP was 8.35 MGD and at Stillwater WWTP was 3.58 MGD during the years 2013-2019.

5.2 Domestic & Commercial Collection System Monitoring
Collection system sampling location considerations consisted of accessibility, traffic safety, contributing neighborhoods and businesses, and sufficient flow.

There were no significant industrial discharges (SIU’s) in any of the locations chosen for domestic & commercial monitoring.

Domestic and commercial wastewater samples were 24-hour composite samples collected by combining four separate two-liter grab samples over a 24-hour period.

Three domestic sites were sampled in the collection system for both wastewater treatment plants during each sampling event for a total of 6 sampling sites per collection event. To represent the domestic and commercial wastewater flows in Redding, sampling locations were rotated after the first four quarterly sampling events to six new sampling sites.

Samples for metals, BOD, TSS, Oil & Grease were collected between July 2017 – June 2019 quarterly from a total of 12 sampling locations throughout the collection system. Sites were chosen to represent three locations with only domestic flow Packet Pg. 725 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) City of Redding Local Limits Final Report 2020

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from both collection systems between July 2017 – May 2018. New locations were chosen in 2018 to represent three locations with domestic and commercial flow from both collection systems between September 2018 – June 2019.

6. STATISTICAL ANALYSIS OF DATA
All WWTP removal efficiency data was analyzed according to the EPA Local Limits Development Guidance2, Section 5.1.3, Data Quality. Removal efficiency (percent Removal) data values were evaluated and outliers were determined based on the interquartile range (IQR) of the data set. The IQR equals the values between the 1st and 3rd quartile. Any data point that lies more than 1.5 times the IQR below Q1, or 1.5 times the IQR above Q3 is considered an outlier.

The data set for CCWWTP percent removal included seven data points. The data set for SWWTP percent removal included nine data points. Due to the relatively low number of data points available between 2013-2019, none of the data were removed from the data set after the outliers were identified. The data set for the domestic and commercial sampling included over 20 data points. The outliers identified were removed from the calculations for domestic and commercial average pollutant concentrations.

7. MAXIMUM ALLOWABLE LOADINGS
The maximum allowable headworks loading (MAHL) for the WWTP is calculated prior to determining the maximum allowable industrial loading (MAIL). MAHL is the maximum amount of a pollutant from controllable and non-controllable sources that may enter the plant without causing a violation of the NPDES permit, violating water quality objectives, contaminating sludge, upsetting the plant performance or exceeding plant capacity.

The lowest MAHL is used as the basis of the local limit for each pollutant. The calculation procedures used in this report are shown below and are based on methodologies provided in the EPA Local Limits Development Guidance2. All MAHLs were calculated using spreadsheets provided by the EPA. Spreadsheet equations were verified for accuracy and modified to represent local conditions.

The city used the uniform concentration method for deriving the local limits. Using this method, the POTW sets industrial user limits, which are applied equally to all industrial users. The advantages of uniform concentration limits are relative ease of calculation and application, and greater protection of the POTW. The disadvantages are that all industries are granted the same allocation for each pollutant regardless of the level of pollutants in each industry's discharge. This may result in relatively stringent limits when compared to other methods of allocation. The City of Redding desires to adopt local limits that are the most protective for the sewer collection system and wastewater treatment plants.

Packet Pg. 726 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) City of Redding Local Limits Final Report 2020

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8. INDUSTRIAL USER NOTICE
Prior to consideration of local limits by the Redding City Council, each permitted Significant Industrial User (SIU) was personally contacted by Industrial Waste Staff to discuss local limits. The representative for each industry was given a summary of their recent wastewater testing data and a comparison of their test results to existing permit limits and the proposed local limits. Industry representatives have been informed about the proposed local limits, they understand that their permit will be amended after the local limits are approved, and they understand there is a 30-day comment period before the limits can be approved by the Redding City Council. The list of SIUs is included below.

Table 12. Significant Industrial Users
SIUs discharging to the Stillwater Wastewater Treatment Plant Ameritech Industries, Inc.
20208-20232 Charlanne Drive,
Redding, CA 96002
Aircraft Service/propellers & governors,
Zero- Discharge Cadmium and Chrome
plating, ancillary rinse water discharge.

Categorical -
Metal Finishing
40 CFR 433.17
Solid Waste Transfer & Recycling Facility
2255 Abernathy Ln, Redding, CA 96003
Municipal Refuse Transfer and
Recycling
not categorical
SAF West (Southern Aluminum Finishing)
4356 Caterpillar Road
Redding, CA 96003
Architectural Aluminum Anodizing and
Aluminum Passivation
Categorical -
Metal Finishing
40 CFR 433.17
SECO Manufacturing
4155 Oasis Road
Redding, CA 96003
Aluminum Anodizing, Survey
Equipment Manufacturing
Categorical -
Metal Finishing
40 CFR 433.17
US Forest Service Air Attack Base
6101 Airport Rd, Redding, CA 96002
Wildland Fire Fighting Aircraft
Operations
not categorical
Wonder Metals
4351 Caterpillar Road
Redding, CA 96003
Aluminum Phosphating, Ventilation
Louver Manufacturing
Categorical -
Metal Finishing
40 CFR 433.17
SIUs discharging to the Clear Creek Wastewater Treatment Plant Benton Landfill, 3025 South, Redding, CA
96001, at the S/E corner of Placer Street
and Buenaventura Boulevard
Municipal Landfill Leachate not categorical
Big Valley Sanitation
5551 Eastside Road
Redding, CA 96001
Septic Tank, Portable Toilet, and
Restaurant Grease Interceptor pumping
company.
not categorical
Foothill Water Treatment Plant
3100 Foothill Blvd Redding, CA 96001
Municipal Water Treatment Plant not categorical
Fall River Brewing Company
4001 Eastside Rd, Redding, CA 96001
Beer Brewery not categorical
Packet Pg. 727 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) City of Redding Local Limits Final Report 2020

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9. LOCAL LIMITS
The City of Redding’s original local limits report in 2015 included all of the discussion and calculations for local limits of Total Metals, Total Petroleum Hydrocarbons Gasoline (TPHGas), Total Petroleum Hydrocarbons (TPH), BOD, TSS, pH, Oil & Grease, and Ammonia.

The lowest local limit observed from any of the calculations was selected as the City of Redding’s local limit to ensure maximum protection of the treatment plant, biosolids and the Sacramento River.

Using the consistent approach to regulating its significant industrial users and the most up-to date testing data, the city found that four limits need to be reduced from their previous levels to continue to provide compliance with wastewater treatment regulations.

The limits to be reduced are copper, zinc, mercury, and silver.

Copper and zinc limits were reduced based on the NPDES monthly average limit at Clear Creek WWTP (Table 2 of the Local Limits Calculation Spreadsheets). Copper and zinc are the only metals with NPDES permit daily and monthly limits. The local limits for copper and zinc need to be reduced due to several factors. First, the average flow to CCWWTP since the 2015 study decreased from an average of 9.3 MGD to 8.35 MGD. Second, the permitted industrial flow increased from 0.187 MGD to 0.323 MGD. These two changes alone reduced the limits by nearly half. The third and fourth factors affecting the local limit calculations are the removal efficiency at the wastewater treatment plant, and the concentration of these metals in domestic wastewater. All of these factors are expected to change due to updated data sets every five years.

Mercury and silver local limits were reduced based on the State Sludge Criteria (Table 6 of the local limits calculation spreadsheets). As stated above for copper and zinc, the first and second factors affecting the mercury and silver limits were the difference in the wastewater treatment plant flows and the industrial flows from the 2015 study to the 2020 study. The third and fourth factors affecting mercury and silver local limits were the quantity of sludge flow and the percent solids of the sludge generated at CCWWTP, which changed significantly due to the installation of centrifuge sludge dewatering equipment.

The fifth and sixth factors affecting mercury and silver limits were the removal efficiencies at the wastewater treatment plant and the concentration of these metals in domestic wastewater. All of these factors are expected to change due to updated data sets every five years.

The revised City of Redding local limits are presented in Table 13.

Packet Pg. 728 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) City of Redding Local Limits Final Report 2020

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TABLE 13. CITY OF REDDING END OF PROCESS LOCAL LIMITS
Constituent City of Redding
Daily Maximum Local Limits
Changes since
2015
Arsenic 0.371 mg/l 371 µg/l -
Cadmium 0.142 mg/l 142 µg/l -
Chromium 5.0 mg/l 5000 µg/l -
Copper 1.24 mg/l 1240 µg/l Lowered from 2.68
mg/l to 1.24 mg/l
Lead 0.988 mg/l 988 µg/l -
Mercury 0.049 mg/l 49 µg/l Lowered from

0.054 mg/l to 0.049
mg/l
Molybdenum 2.20 mg/l 2200 µg/l -
Nickel 2.10 mg/l 2100 µg/l -
Selenium 0.355 mg/l 355 µg/l -
Silver 1.28 mg/l 1280 µg/l Lowered from 3.02
mg/l to 1.28 mg/l
Zinc 2.82 mg/l 2820 µg/l Lowered from 3.94
mg/l to 2.82 mg/l
Total Petroleum
Hydrocarbons
Gasoline (TPH
Gas)

1.0 mg/l 1000 µg/l -
Total Petroleum
Hydrocarbons
(TPH)
100 mg/l -
BOD (Biochemical
Oxygen Demand)
2,000 mg/l * -
TSS (Total
Suspended Solids)
1,500 mg/l * -
pH units 6.4 – 12.0 -
Oil and Grease
(O & G)
300 mg/l -
Ammonia 350 mg/l * -
*The limits for biochemical oxygen demand (BOD), total suspended solids (TSS), and ammonia serve as guidance. The city, however, reserves the right and discretion to apply mass-based limits (pounds per day limits) for these constituents to wastewater discharge permits as needed.

Packet Pg. 729 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) City of Redding Local Limits Final Report 2020

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10. FUTURE UPDATES & SUPPORTING DOCUMENTATION
The EPA requires all POTWs to review their local limits at least every five years and update the limits when there are significant changes in (1) the limiting criteria on which local limits are based, (2) the flow rate and characteristics of industrial contributions (including connection of additional industrial users), or (3) significant process changes at the WWTP. The City of Redding will continue to evaluate local limits every five years and update as necessary to comply with EPA regulations.

All analytical laboratory data supporting the local limits evaluation and associated calculations are kept by the City of Redding Industrial Waste Division in a separate document.

REFERENCES:

1. City of Redding Clear Creek Wastewater Treatment Facility Operation and Maintenance Manual. Redding, CA: City of Redding, December 1979 with June 1991 updates.

2. Local Limits Development Guidance. Washington, D.C.: EPA July 2004.

3. City of Redding Stillwater Wastewater Treatment Facility Operation and Maintenance Manual. Redding, CA: City of Redding, July 1992.

4. California Toxics Rule. Federal Register 40 CFR Part 131. Washington, D.C. May 18, 2000.

5. The Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board, Central Valley Region, Fifth Edition, The Sacramento River Basin and The San Joaquin River Basin. California Regional Water Quality Control Board, Central Valley Region. May 2018 (with Approved Amendments).

6. Policy for Implementation of Toxics Standards for Inland Surface Waters, Enclosed Bays and Estuaries of California (SIP). State Water Resources Control Board, Sacramento, CA 2005.

7. A Compilation of Water Quality Goals. 17th Edition. California Environmental Protection Agency, State Water Resources Control Board. January 2016. http://www.waterboards.ca.gov/water_issues/programs/water_quality_goals/

8. Guidance Manual for Preventing Interference at POTWs. Washington, D.C.: EPA September 1987.

Packet Pg. 730 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) Appendix A-1: Schematic Diagra1m of
Clear Creek Wastewater Treatment Plant
---+- Wastewater Flow
Biosolid Flow
Drying Beds
Facultative S'!udge Lagoons
• In Reserve
Hcactworks
Influent Pump
stahons
Redding
Wastewater
Aeraliori Basin
Excessive Peak Flow
to Storage
_,,, flltors
~
Dewatienng
,,
Dls1nfectlon
Sacramonto
Rlvor
.,,,, Outfall
Landfill
Packet Pg. 731 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Appendix A-2 Schematic Diagram of
Stillwater Wastewater Treatment Plant
LEGEND
GRIT

CHAMBERS
(GC)

LIQUID PATH

SOLIDS PATH

AERATION BASINS
(AB)
AB11
AB10
AB4
AB 3
, p.a:, .

SECONDARY

CLARI FIERS
(SC)1

BELT FILTER PRESS

DEWATERING

SECONDARY

EQUALIZATION BASINS
(SEQB)
-
-

FILTERS (F)

DISINFECTION/

CHLORINE CONTACT BASIN
(CCB)

CONTACT PIPELINE

CHLORINE

CONTACT BASINS
(CCB)
Packet Pg. 732 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-1
Clear Creek WWTP Local Limits Calculations Spreadsheets TABLE 1
Local Limits Determination Based on NPDES Daily Effluent Limits

ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADING INDUSTRIAL IU Pollut. POTW Mean Remova NPDES Domestic aCommercial Allowable Domestic/ Allowable Local Safety Pollutant Flow Flow Efficiency Daily Limit Median Conc. Flow Headworks Commercial Loading Limit Factor (MGD) (MGD) (%) (mg/l) (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) (Qind) (Qpotw) (Rpotw) (Ccrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) Arsenic 0.323 8.35 28.5 0.00112 8.027 - 0.07498 - - 10Cadmium 0.323 8.35 72.5 0.000125 8.027 - 0.00837 - - 10Chromium 0.323 8.35 81.1 0.00113 8.027 - 0.07565 - - 10Copper 0.323 8.35 79.8 0.032 0.0437 8.027 11.032 2.92550 7.003 2.600 10Lead 0.323 8.35 90.5 0.000855 8.027 - 0.05724 - - 10Mercury 0.323 8.35 98.9 0.000036 8.027 - 0.00241 - - 10Molybdenum 0.323 8.35 40.3 0.000824 8.027 - 0.05516 - - 10 Nickel 0.323 8.35 43.1 0.00268 8.027 - 0.17941 - - 10Selenium 0.323 8.35 53.5 0.00075 8.027 - 0.05021 - - 10Silver 0.323 8.35 96.8 0.000141 8.027 - 0.00944 - - 10Zinc 0.323 8.35 65.4 0.1167 0.102 8.027 23.488 6.82841 14.311 5.312 10BOD 0.323 8.35 97.84 30 208 8.027 96720.833 13924.59744 73124.153 27145.152 10TSS 0.323 8.35 99.01 30 119 8.027 211027.273 7966.47642 181958.069 67546.484 10Ammonia 0.323 8.35 99.33 24.9 8.027 - 1666.93498 - - 10(Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Rpotw) Removal efficiency across POTW as percent. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Ccrit) NPDES daily maximum permit limit for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT TABLE 3. (Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind.(Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SUGGESTS 10% SAFETY FACTOR8.34 Unit conversion factorLhw = 8.34 * Ccrit * Qpotw 1 - Rpotw
Filename: Appendix B1B3 2020 CC EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

Page 1 of 9 ends

Packet Pg. 733
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-1
Clear Creek WWTP Local Limits Calculations Spreadsheets TABLE 2
Local Limits Determination Based on NPDES Monthly Effluent Limits

ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADING INDUSTRIAL IU Pollut. POTW Removal NPDES Domestic aCommercial Allowable Domestic/ Allowable Local Safety Pollutant Flow Flow Efficiency Monthly Limit Conc. Flow Headworks Commercial Loading Limit Factor (MGD) (MGD) (%) (mg/l) (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) (Qind) (Qpotw) (Rpotw) (Ccrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) Arsenic 0.323 8.35 28.5 0.00112 8.027 - 0.07498 - - 10Cadmium 0.323 8.35 72.5 0.000125 8.027 - 0.00837 - - 10Chromium 0.323 8.35 81.1 0.00113 8.027 - 0.07565 - - 10Copper 0.323 8.35 79.8 0.0202 0.0437 8.027 6.964 2.92550 3.342 1.241 10Lead 0.323 8.35 90.5 0.000855 8.027 - 0.05724 - - 10Mercury 0.323 8.35 98.9 0.000036 8.027 - 0.00241 - - 10Molybdenum 0.323 8.35 40.3 0.000824 8.027 - 0.05516 - - 10 Nickel 0.323 8.35 43.1 0.00268 8.027 - 0.17941 - - 10Selenium 0.323 8.35 53.5 0.00075 8.027 - 0.05021 - - 10Silver 0.323 8.35 96.8 0.000141 8.027 - 0.00944 - - 10Zinc 0.323 8.35 65.4 0.0797 0.102 8.027 16.041 6.82841 7.609 2.824 10BOD 0.323 8.35 97.84 10 208 8.027 32240.278 13924.59744 15091.653 5602.324 10TSS 0.323 8.35 99.01 10 119 8.027 70342.424 7966.47642 55341.705 20543.951 10Ammonia 0.323 8.35 99.33 2.8 24.9 8.027 29102.866 1666.93498 24525.644 9104.411 10(Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Rpotw) Removal efficiency across POTW as percent. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Ccrit) NPDES monthly maximum permit limit for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT TABLE 3.(Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind.(Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SUGGESTS 10% SAFETY FACTOR8.34 Unit conversion factorLhw = 8.34 * Ccrit * Qpotw 1 - Rpotw
Filename: Appendix B1B3 2020 CC EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

Page 2 of 9 ends

Packet Pg. 734
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-1
Clear Creek WWTP Local Limits Calculations Spreadsheets TABLE 3
Local Limits Determination Based on Activated Sludge Inhibition Level

ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADING INDUSTRIAL IU Pollut. POTW Removal Activated Sludge Domestic aCommercial Allowable Domestic/ Allowable Local Safety Pollutant Flow Flow Efficiency Inhibition Level Conc. Flow Headworks Commercial Loading Limit Factor (MGD) (MGD) (%) (mg/l) (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) (Qind) (Qpotw) (Rprim) (Ccrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) Arsenic 0.323 8.35 8.28 0.1 0.00112 8.027 7.593 0.07498 6.758 2.509 10Cadmium 0.323 8.35 32.46 0.5 0.000125 8.027 51.554 0.00837 46.390 17.221 10Chromium 0.323 8.35 42.46 1 0.00113 8.027 121.027 0.07565 108.849 40.407 10Copper 0.323 8.35 28.17 0.1 0.0437 8.027 9.695 2.92550 5.800 2.153 10Lead 0.323 8.35 42.94 0.1 0.000855 8.027 12.205 0.05724 10.927 4.056 10Mercury 0.323 8.35 64.31 0.1 0.000036 8.027 19.512 0.00241 17.559 6.518 10Molybdenum 0.323 8.35 1.48 - 0.000824 8.027 - 0.05516 - - 10 Nickel 0.323 8.35 33.19 1 0.00268 8.027 104.234 0.17941 93.632 34.758 10Selenium 0.323 8.35 4.15 - 0.00075 8.027 - 0.05021 - - 10Silver 0.323 8.35 21.86 0.1 0.000141 8.027 8.912 0.00944 8.011 2.974 10Zinc 0.323 8.35 34.14 0.3 0.102 8.027 31.721 6.82841 21.721 8.063 10BOD 0.323 8.35 98.0 - 208 8.027 - 13924.59744 - - 10TSS 0.323 8.35 99.4 - 119 8.027 - 7966.47642 - - 10Ammonia 0.323 8.35 99.24 480 24.9 8.027 4398252.632 1666.93498 3956760.433 1468828.813 10(Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Rprim) (Ccrit) Activated sludge threshold inhibition level, mg/l. NOTE: SEE FINAL REPORT, TABLE 9(Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind.(Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SUGGESTS 10% SAFETY FACTOR8.34 Unit conversion factorLhw = 8.34 * Ccrit * Qpotw 1 - Rprim
Removal efficiency across across primary treatment as percent. NOTE: The Rprim Removal Efficiencies in this table are from the origial local limits study, using data from 1998-2008. Sampling at the primary effluent station was discontinued from 2008-2019. Sampling at the primary effluent sampling station resumed in 2019 to generate new data for the next (year 2025) local limits update. SEE FINAL REPORT, APPENDIC B-4 Filename: Appendix B1B3 2020 CC EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

Page 3 of 9 ends

Packet Pg. 735
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-1
Clear Creek WWTP Local Limits Calculations Spreadsheets TABLE 4
Local Limits Determination Based on Nitrification Inhibition Level

ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADING INDUSTRIAL IU Pollut. POTW Removal Nitrification Domestic anCommercial Allowable Domestic/ Allowable Local Safety Pollutant Flow Flow Efficiency Inhibition Level Conc. Flow Headworks Commercial Loading Limit Factor (MGD) (MGD) (%) (mg/l) (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) (Qind) (Qpotw) (Rsec)= Rpotw (Ccrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) Arsenic 0.323 8.35 28.5 1.5 0.00112 8.027 146.096 0.07498 131.411 48.782 10 Cadmium 0.323 8.35 72.5 5 0.000125 8.027 1266.164 0.00837 1139.539 423.020 10Chromium 0.323 8.35 81.1 0.25 0.00113 8.027 92.115 0.07565 82.828 30.747 10Copper 0.323 8.35 79.8 0.05 0.0437 8.027 17.237 2.92550 12.588 4.673 10Lead 0.323 8.35 90.5 0.5 0.000855 8.027 366.521 0.05724 329.812 122.433 10Mercury 0.323 8.35 98.9 2 0.000036 8.027 12661.636 0.00241 11395.470 4230.227 10Molybdenum 0.323 8.35 40.3 - 0.000824 8.027 - 0.05516 - - 10 Nickel 0.323 8.35 43.1 0.25 0.00268 8.027 30.597 0.17941 27.358 10.156 10Selenium 0.323 8.35 53.5 - 0.00075 8.027 - 0.05021 - - 10Silver 0.323 8.35 96.8 0.25 0.000141 8.027 544.055 0.00944 489.640 181.764 10Zinc 0.323 8.35 65.4 0.29 0.102 8.027 58.368 6.82841 45.703 16.966 10BOD 0.323 8.35 97.84 - 208 8.027 - 13924.59744 - - 10TSS 0.323 8.35 99.01 - 119 8.027 - 7966.47642 - - 10Ammonia 0.323 8.35 99.33 - 24.9 8.027 - 1666.93498 - - 10(Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Rsec) Removal efficiency across primary and secondary treatment as percent. NOTE: SEE REPORT SECTION 5.1, B AND APPENDIX B-4(Ccrit) Nitrification threshold inhibition level, mg/l. NOTE: SEE FINAL REPORT, TABLE 10.(Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind.(Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SUGGESTS 10% SAFETY FACTOR8.34 Unit conversion factorLhw = 8.34 * Ccrit * Qpotw 1 - Rsec
Filename: Appendix B1B3 2020 CC EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

Page 4 of 9 ends

Packet Pg. 736
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-1
Clear Creek WWTP Local Limits Calculations Spreadsheets TABLE 5
Local Limits Determination Based on USEPA 503 Sludge Regulations

ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADING INDUSTRIAL IU Pollut. POTW Sludge Percent Removal 503 Sludge Domestic an Commercial Allowable Domestic/ Allowable Local Safety Pollutant Flow Flow Flow Solids Efficiency Criteria Conc. Flow Headworks Commercial Loading Limit Factor (MGD) (MGD) (MGD) (%) (%) (mg/kg) (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) (Qind) (Qpotw) (Qsldg) (PS) (Rpotw) (Cslcrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) Arsenic 0.323 8.35 0.000891 22.0 28.5 41 0.00112 8.02700 0.254 0.075 0.176478776 0.06551 1 1.08 Cadmium 0.323 8.35 0.000891 22.0 72.5 39 0.000125 8.02700 0.095 0.008 0.085658724 0.0318 1 1.08 Chromium 0.323 8.35 0.000891 22.0 81.1 0.00113 8.02700 - 0.076 - - 1 1.08 Copper 0.323 8.35 0.000891 22.0 79.8 1500 0.0437 8.02700 3.319 2.926 0.360088549 0.13367 1 1.08 Lead 0.323 8.35 0.000891 22.0 90.5 300 0.000855 8.02700 0.585 0.057 0.522187981 0.19385 1 1.08 Mercury 0.323 8.35 0.000891 22.0 98.9 17 0.000036 8.02700 0.030 0.002 0.027635375 0.01026 1 1.08 Molybdenum 0.323 8.35 0.000891 22.0 40.3 75 0.000824 8.02700 0.329 0.055 0.270135329 0.10028 1 1.08 Nickel 0.323 8.35 0.000891 22.0 43.1 420 0.00268 8.02700 1.721 0.179 1.523911467 0.56571 1 1.08 Selenium 0.323 8.35 0.000891 22.0 53.5 100 0.00075 8.02700 0.330 0.050 0.276508018 0.10265 1 1.08 Silver 0.323 8.35 0.000891 22.0 96.8 0.000141 8.02700 - 0.009 - - 1 1.08 Zinc 0.323 8.35 0.000891 22.0 65.4 2800 0.102 8.02700 7.559 6.828 0.655107245 0.24319 1 1.08 BOD 0.323 8.35 0.000891 22.0 97.84 208 8.02700 - 13924.597 - - 1 1.08 TSS 0.323 8.35 0.000891 22.0 99.01 119 8.02700 - 7966.476 - - 1 1.08 Ammonia 0.323 8.35 0.000891 22.0 99.33 24.9 8.02700 - 1666.935 - - 1 1.08 (Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Qsldg) Sludge flow to disposal in MGD. NOTE: SEE FINAL REPORT, APPENDIX D(PS) Percent solids of sludge to disposal. NOTE: SEE FINAL REPORT, APPENDIX D(Rpotw) Removal efficiency across POTW as percent. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Cslcrit) 503 sludge criteria in mg/kg dry sludge. NOTE: SEE FINAL REPORT, TABLE 7.(Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind.(Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. NOTE: SAFETY OF FACTOR OF ONE (1) USED TO AVOID CALCULATION RESULTS BECOMING NEGATIVE NUMBERS.8.34 Unit conversion factorLhw = 8.34 * Cslcrit * (PS/100) * Qsldg * (Specific Gravity/100) Rpotw
Specific
gravity
of
sludge
Filename: Appendix B1B3 2020 CC EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

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Packet Pg. 737
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-1
Clear Creek WWTP Local Limits Calculations Spreadsheets TABLE 6
Local Limits Determination Based on State Sludge Criteria ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADING INDUSTRIAL State Sludge Criteria
IU Pollut. POTW Sludge Percent Removal State Sludge Domestic an Commercial Allowable Domestic/ Allowable Local Safety (mg/kg) Pollutant Flow Flow Flow Solids Efficiency Criteria Conc. Flow Headworks Commercial Loading Limit Factor WET weight (MGD) (MGD) (MGD) (%) (%) g/kg) DRY wei (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) see Cslcrit (Qind) (Qpotw) (Qsldg) (PS) (Rpotw) (Cslcrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) note below Arsenic 0.323 8.35 0.000891 22.0 28.5 2272.73 0.00112 8.027 13.037 0.075 11.658 4.328 10 500 Cadmium 0.323 8.35 0.000891 22.0 72.5 454.55 0.000125 8.027 1.025 0.008 0.914 0.339 10 100 Chromium 0.323 8.35 0.000891 22.0 81.1 11363.64 0.00113 8.027 22.907 0.076 20.540 7.625 10 2500 Copper 0.323 8.35 0.000891 22.0 79.8 11363.64 0.0437 8.027 23.280 2.926 18.026 6.692 10 2500 Lead 0.323 8.35 0.000891 22.0 90.5 4545.45 0.000855 8.027 8.211 0.057 7.333 2.722 10 1000 Mercury 0.323 8.35 0.000891 22.0 98.9 90.91 0.000036 8.027 0.150 0.002 0.133 0.049 10 20 Molybdenum 0.323 8.35 0.000891 22.0 40.3 15909.09 0.000824 8.027 64.537 0.055 58.028 21.541 10 3500 Nickel 0.323 8.35 0.000891 22.0 43.1 9090.91 0.00268 8.027 34.482 0.179 30.855 11.454 10 2000 Selenium 0.323 8.35 0.000891 22.0 53.5 454.55 0.00075 8.027 1.389 0.050 1.200 0.445 10 100 Silver 0.323 8.35 0.000891 22.0 96.8 2272.73 0.000141 8.027 3.838 0.009 3.445 1.279 10 500 Zinc 0.323 8.35 0.000891 22.0 65.4 22727.27 0.102 8.027 56.811 6.828 44.302 16.446 10 5000 BOD 0.323 8.35 0.000891 22.0 97.84 208 8.027 - 13924.597 - - 10 TSS 0.323 8.35 0.000891 22.0 99.01 119 8.027 - 7966.476 - - 10 Ammonia 0.323 8.35 0.000891 22.0 99.33 24.9 8.027 - 1666.935 - - 10 (Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Qsldg) Sludge flow to disposal in MGD. SEE FINAL REPORT. APPENDIX D(PS) Percent solids of sludge to disposal. NOTE: SEE FINAL REPORT, APPENDIX D(Rpotw) Removal efficiency across POTW as percent. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Cslcrit) (Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind. (Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SUGGESTS 10% SAFETY FACTOR8.34 Unit conversion factorLhw = 8.34 * Cslcrit * (PS/100) * Qsldg Rpotw
State sludge criteria in mg/kg dry sludge. NOTE: This is a calculated value using the State Sludge WET weight value shown in the column to the right of the table, and then calculated as follows: WET Weight LIMIT divided by % solids as a decimal. Example: 500/(22.1 % solids/100) = 2262.44 SEE FINAL REPORT, TABLE 8.

Filename: Appendix B1B3 2020 CC EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

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Packet Pg. 738
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-1
Clear Creek WWTP Local Limits Calculations Spreadsheets TABLE 7
Local Limits Determination Based on Chronic Water Quality Standards

ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADING INDUSTRIAL IU Pollut. POTW Upstream Upstream Removal Chronic Domestic an Commercial Allowable Domestic/ Allowable Local Safety Pollutant Flow Flow Flow Conc. Efficiency WQS Conc. Flow Headworks Commercial Loading Limit Factor (MGD) (MGD) (MGD) (mg/l) (%) (mg/l) (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) (Qind) (Qpotw) (Qstr) (Cstr) (Rpotw) (Ccrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) Arsenic 0.323 8.35 2094 0.00153 28.5 0.01 0.00112 8.02700 207.855 0.075 186.9942775 69.416 10 Cadmium 0.323 8.35 2094 0.0000199 72.5 0.00022 0.000125 8.02700 12.763 0.008 11.47844305 4.26103 10 Chromium 0.323 8.35 2094 0.000493 81.1 0.084 0.00113 8.02700 7747.157 0.076 6972.365227 2588.28 10 Copper 0.323 8.35 2094 0.00137 79.8 0.0041 0.0437 8.02700 237.436 2.926 210.7671572 78.241 10 Lead 0.323 8.35 2094 0.000034 90.5 0.00092 0.000855 8.02700 163.549 0.057 147.136686 54.6201 10 Mercury 0.323 8.35 2094 0.000000672 98.9 0.00077 0.000036 8.02700 1226.285 0.002 1103.654127 409.699 10 Molybdenum 0.323 8.35 2094 0.00037 40.3 0.01 0.000824 8.02700 282.872 0.055 254.5292464 94.4864 10 Nickel 0.323 8.35 2094 0.001460 43.1 0.024 0.00268 8.02700 694.743 0.179 625.0896466 232.046 10 Selenium 0.323 8.35 2094 0.000508 53.5 0.005 0.00075 8.02700 169.454 0.050 152.4587653 56.5958 10 Silver 0.323 8.35 2094 0.00000717 96.8 0.00071 0.000141 8.02700 385.114 0.009 346.5928991 128.662 10 Zinc 0.323 8.35 2094 0.00199 65.4 0.016 0.102 8.02700 710.359 6.828 632.4949247 234.795 10 BOD 0.323 8.35 2094 - 97.84 208 8.02700 - 13924.597 - - 10 TSS 0.323 8.35 2094 - 99.01 119 8.02700 - 7966.476 - - 10 Ammonia 0.323 8.35 2094 - 99.33 0.49 24.9 8.02700 1282307.987 1666.935 1152410.253 427798 10 (Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Qstr) Receiving stream (upstream) 7Q10 flow in MGD, ACCORDING TO THE WASTEWATER TREATMENT PLANT NPDES PERMIT, AND FINAL REPORT TABLE 5.2 (Cstr) Receiving stream background level in mg/l., NOTE: SEE FINAL REPORT APPENDIX C(Rpotw) Removal efficiency across POTW as percent. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Ccrit) State chronic water quality standard for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, TABLE 5.1(Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind.(Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SUGGESTS 10% SAFETY FACTOR8.34 Unit conversion factorLhw = 8.34 * (Ccrit * (Qstr + Qpotw) - (Cstr * Qstr)) 1 - Rpotw
Filename: Appendix B1B3 2020 CC EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

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Packet Pg. 739
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-1
Clear Creek WWTP Local Limits Calculations Spreadsheets TABLE 8
Local Limits Determination Based on Acute Water Quality Standards

ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADING INDUSTRIAL IU Pollut. POTW Upstream Removal Acute Domestic an Commercial Allowable Domestic/ Allowable Local Safety Pollutant Flow Flow Flow Conc. Efficiency WQS Conc. Flow Headworks Commercial Loading Limit Factor (MGD) (MGD) (MGD) (mg/l) (%) (mg/l) (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) (Qind) (Qpotw) (Qstr) (Cstr) (Rpotw) (Ccrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) Arsenic 0.323 8.35 1976 0.00153 28.5 0.01 0.00112 8.02700 196.197 0.075 176.5020442 65.5211 10 Cadmium 0.323 8.35 1976 0.0000199 72.5 0.00022 0.000125 8.02700 12.047 0.008 10.8339697 4.02179 10 Chromium 0.323 8.35 1976 0.000493 81.1 0.26 0.00113 8.02700 22723.492 0.076 20451.06711 7591.85 10 Copper 0.323 8.35 1976 0.00137 79.8 0.0056 0.0437 8.02700 347.028 2.926 309.3998988 114.855 10 Lead 0.323 8.35 1976 0.000034 90.5 0.024 0.000855 8.02700 4175.023 0.057 3757.463428 1394.85 10 Mercury 0.323 8.35 1976 0.000000672 98.9 0.0014 0.000036 8.02700 2105.291 0.002 1894.759093 703.373 10 Molybdenum 0.323 8.35 1976 0.00037 40.3 0.01 0.000824 8.02700 266.997 0.055 240.2421978 89.1827 10 Nickel 0.323 8.35 1976 0.001460 43.1 0.22 0.00268 8.02700 6356.458 0.179 5720.633122 2123.61 10 Selenium 0.323 8.35 1976 0.000508 53.5 0.02 0.00075 8.02700 693.802 0.050 624.3713807 231.779 10 Silver 0.323 8.35 1976 0.00000717 96.8 0.00071 0.000141 8.02700 363.499 0.009 327.1397068 121.441 10 Zinc 0.323 8.35 1976 0.00199 65.4 0.016 0.102 8.02700 670.511 6.828 596.6314303 221.482 10 BOD 0.323 8.35 1976 - 97.84 208 8.02700 - 13924.597 - - 10 TSS 0.323 8.35 1976 - 99.01 119 8.02700 - 7966.476 - - 10 Ammonia 0.323 8.35 1976 - 99.33 1.77 24.9 8.02700 4372026.542 1666.935 3933156.953 1460067 10 (Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Qstr) Receiving stream (upstream) 1Q10 flow in MGD, ACCORDING TO THE WASTEWATER TREATMENT PLANT NPDES PERMIT, AND FINAL REPORT TABLE 6.2(Cstr) Receiving stream background level in mg/l., NOTE: SEE FINAL REPORT APPENDIX C(Rpotw) Removal efficiency across POTW as percent. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Ccrit) State acute water quality standard for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, TABLE 6.1(Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind.(Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SUGGESTS 10% SAFETY FACTOR8.34 Unit conversion factorLhw = 8.34 * (Ccrit * (Qstr + Qpotw) - (Cstr * Qstr)) 1 - Rpotw
Filename: Appendix B1B3 2020 CC EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

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Packet Pg. 740
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-1
Clear Creek WWTP Local Limits Calculations Spreadsheets TABLE 9
Local Limits Determination Based on Anaerobic Digester Inhibition Level

ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADING INDUSTRIAL IU Pollut. POTW Sludge Flow Removal Anaerobic Digester Domestic and Commercial Allowable Domestic/ Allowable Local Safety Pollutant Flow Flow to Digester Efficiency Inhibition Conc. Flow Headworks Commercial Loading Limit Factor (MGD) (MGD) (MGD) (%) Level (mg/l) (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) (Qind) (Qpotw) (Qdig) (Rpotw) (Ccrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) Arsenic 0.323 8.35 0.032 28.5 1.6 0.00112 8.027 1.49827 0.075 1.273 0.472736751 10Cadmium 0.323 8.35 0.032 72.5 10 0.000125 8.027 3.68110 0.008 3.305 1.226743047 10Chromium 0.323 8.35 0.032 81.1 65 0.00113 8.027 21.38989 0.076 19.175 7.118238067 10Copper 0.323 8.35 0.032 79.8 50 0.0437 8.027 16.72180 2.926 12.124 4.500716341 10Lead 0.323 8.35 0.032 90.5 195 0.000855 8.027 57.50453 0.057 51.697 19.19090333 10Mercury 0.323 8.35 0.032 98.9 1400 0.000036 8.027 377.78766 0.002 340.006 126.217226 10Molybdenum 0.323 8.35 0.032 40.3 - 0.000824 8.027 - 0.055 - - 10 Nickel 0.323 8.35 0.032 43.1 100 0.00268 8.027 61.92111 0.179 55.550 20.6211214 10Selenium 0.323 8.35 0.032 53.5 - 0.00075 8.027 - 0.050 - - 10Silver 0.323 8.35 0.032 96.8 39 0.000141 8.027 10.75240 0.009 9.668 3.588850686 10Zinc 0.323 8.35 0.032 65.4 200 0.102 8.027 81.61468 6.828 66.625 24.73246269 10BOD 0.323 8.35 0.032 97.84 - 208 8.027 - 13924.597 - - 10TSS 0.323 8.35 0.032 99.01 - 119 8.027 - 7966.476 - - 10Ammonia 0.323 8.35 0.032 99.25 - 24.9 8.027 - 1666.935 - - 10(Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Qdig) Sludge flow to digester in MGD. NOTE: SEE FINAL REPORT, APPENDIX D(Rpotw) Removal efficiency across POTW as percent. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Ccrit) Anaerobic digester threshold inhibition level in mg/l. NOTE: SEE FINAL REPORT, TABLE 11(Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind.(Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SUGGESTS 10% SAFETY FACTOR8.34 Unit conversion factorLhw = 8.34 * Ccrit * Qdig Rpotw
Filename: Appendix B1B3 2020 CC EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

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Packet Pg. 741
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-2
Stillwater WWTP Local Limits Calculation Spreadsheets
TABLE 1
Local Limits Determination Based on NPDES Daily Effluent Limits

ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADING INDUSTRIAL IU Pollut. POTW
Mean
Removal NPDES Domestic & Commercial Allowable Domestic/ Allowable Local Safety Pollutant Flow Flow Efficiency Daily Limit Median Conc. Flow Headworks Commercia Loading Limit Factor (MGD) (MGD) (%) (mg/l) (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) (Qind) (Qpotw) (Rpotw) (Ccrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) Arsenic 0.0507 3.58 1.00 0.00136 3.5293 - 0.0400307 - - 10 Cadmium 0.0507 3.58 60.35 0.000125 3.5293 - 0.0036793 - - 10 Chromium 0.0507 3.58 62.14 0.00115 3.5293 - 0.0338495 - - 10 Copper 0.0507 3.58 66.17 0.052 0.0362 3.5293 4.589342 1.0655239 3.0648839 7.2483644 10 Lead 0.0507 3.58 89.01 0.000677 3.5293 - 0.0199271 - - 10 Mercury 0.0507 3.58 97.41 0.0000271 3.5293 - 0.0007977 - - 10 Molybdenum 0.0507 3.58 25.45 0.000994 3.5293 - 0.0292578 - - 10 Nickel 0.0507 3.58 19.54 0.00268 3.5293 - 0.0788841 - - 10 Selenium 0.0507 3.58 36.14 0.00075 3.5293 - 0.0220758 - - 10 Silver 0.0507 3.58 92.27 0.000143 3.5293 - 0.0042091 - - 10 Zinc 0.0507 3.58 42.43 0.3 0.117 3.5293 15.558729 3.4438204 10.559035 24.971822 10 BOD 0.0507 3.58 98.23 212 3.5293 - 6240.0847 - - 10
TSS 0.0507 3.58 98.70 150 3.5293 - 4415.1543 - - 10
Ammonia 0.0507 3.58 99.25 29.3 3.5293 - 862.42681 - - 10 (Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Rpotw) Removal efficiency across POTW as percent. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Ccrit) NPDES daily maximum permit limit for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT TABLE 4.(Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind.(Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SUGGESTS 10% SAFETY FACTOR8.34 Unit conversion factorLhw = 8.34 * Ccrit * Qpotw 1 - Rpotw
Filename: Appendix B2B3 2020 SW EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

Page 1 of 9 ends

Packet Pg. 742
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-2
Stillwater WWTP Local Limits Calculation Spreadsheets
TABLE 2
Local Limits Determination Based on NPDES Monthly Effluent Limits

ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADING INDUSTRIAL IU Pollut. POTW Removal NPDES Domestic & Commercial Allowable Domestic/ Allowable Local Safety Pollutant Flow Flow Efficiency Monthly Limit Conc. Flow HeadworksCommercia Loading Limit Factor (MGD) (MGD) (%) (mg/l) (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) (Qind) (Qpotw) (Rpotw) (Ccrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) Arsenic 0.0507 3.58 1 0.00136 3.5293 - 0.0400307 - - 10 Cadmium 0.0507 3.58 60.35 0.000125 3.5293 - 0.0036793 - - 10 Chromium 0.0507 3.58 62.14 0.00115 3.5293 - 0.0338495 - - 10 Copper 0.0507 3.58 66.17 0.033 0.0362 3.5293 2.912467 1.0655239 1.5556964 3.6791784 10 Lead 0.0507 3.58 89.01 0.000677 3.5293 - 0.0199271 - - 10 Mercury 0.0507 3.58 97.41 0.0000271 3.5293 - 0.0007977 - - 10 Molybdenum 0.0507 3.58 25.45 0.000994 3.5293 - 0.0292578 - - 10 Nickel 0.0507 3.58 19.54 0.00268 3.5293 - 0.0788841 - - 10 Selenium 0.0507 3.58 36.14 0.00075 3.5293 - 0.0220758 - - 10 Silver 0.0507 3.58 92.27 0.000143 3.5293 - 0.0042091 - - 10 Zinc 0.0507 3.58 42.43 0.18 0.117 3.5293 9.3352371 3.4438204 4.957893 11.725278 10 BOD 0.0507 3.58 98.23 10 212 3.5293 16868.475 6240.0847 8941.5424 21146.497 10 TSS 0.0507 3.58 98.7 10 150 3.5293 22967.077 4415.1543 16255.215 38443.127 10 Ammonia 0.0507 3.58 99.25 0.62 29.3 3.5293 2468.1952 862.42681 1358.9489 3213.8759 10 (Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Rpotw) Removal efficiency across POTW as percent. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Ccrit) NPDES daily maximum permit limit for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT TABLE 4.(Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind.(Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SUGGESTS 10% SAFETY FACTOR8.34 Unit conversion factorLhw = 8.34 * Ccrit * Qpotw 1 - Rpotw
Filename: Appendix B2B3 2020 SW EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

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Packet Pg. 743
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-2
Stillwater WWTP Local Limits Calculation Spreadsheets
TABLE 3
Local Limits Determination Based on Activated Sludge Inhibition Level

ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADING INDUSTRIAL IU Pollut. POTW Removal Activated Sludg Domestic & Commercial Allowable Domestic/ Allowable Local Safety Pollutant Flow Flow Efficiency Inhibition Leve Conc. Flow Headworks Commercia Loading Limit Factor (MGD) (MGD) (%) (mg/l) (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) (Qind) (Qpotw) (Rprim) (Ccrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) Arsenic 0.0507 3.58 0 0.1 0.00136 3.5293 2.98572 0.0400307 2.6471173 6.260358 10 Cadmium 0.0507 3.58 0 0.5 0.000125 3.5293 14.9286 0.0036793 13.432061 31.766446 10 Chromium 0.0507 3.58 0 1 0.00115 3.5293 29.8572 0.0338495 26.83763 63.470243 10 Copper 0.0507 3.58 0 0.1 0.0362 3.5293 2.98572 1.0655239 1.6216241 3.8350955 10 Lead 0.0507 3.58 0 0.1 0.000677 3.5293 2.98572 0.0199271 2.6672209 6.3079026 10 Mercury 0.0507 3.58 0 0.1 0.0000271 3.5293 2.98572 0.0007977 2.6863503 6.3531431 10 Molybdenum 0.0507 3.58 0 - 0.000994 3.5293 - 0.0292578 - - 10 Nickel 0.0507 3.58 0 1 0.00268 3.5293 29.8572 0.0788841 26.792596 63.363737 10 Selenium 0.0507 3.58 0 - 0.00075 3.5293 - 0.0220758 - - 10 Silver 0.0507 3.58 0 0.1 0.000143 3.5293 2.98572 0.0042091 2.6829389 6.3450751 10 Zinc 0.0507 3.58 0 0.3 0.117 3.5293 8.95716 3.4438204 4.6176236 10.92055 10 BOD 0.0507 3.58 0 - 212 3.5293 - 6240.0847 - - 10
TSS 0.0507 3.58 0 - 150 3.5293 - 4415.1543 - - 10
Ammonia 0.0507 3.58 0 480 29.3 3.5293 14331.456 862.42681 12035.884 28464.527 10 (Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Rprim) (Ccrit) Activated sludge threshold inhibition level, mg/l. NOTE: SEE FINAL REPORT, TABLE 9(Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind.(Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SUGGESTS 10% SAFETY FACTOR8.34 Unit conversion factorLhw = 8.34 * Ccrit * Qpotw 1 - Rprim
Removal efficiency across across primary treatment as percent. NOTE: Stillwater Wastewater Treatment Plant does not have primary clairifiers, therefore there is no Rprim % removal.

Filename: Appendix B2B3 2020 SW EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

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Packet Pg. 744
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-2
Stillwater WWTP Local Limits Calculation Spreadsheets
TABLE 4
Local Limits Determination Based on Nitrification Inhibition Level

ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADING INDUSTRIAL IU Pollut. POTW Removal Nitrification Domestic & Commercial Allowable Domestic/ Allowable Local Safety Pollutant Flow Flow Efficiency Inhibition Leve Conc. Flow Headworks Commercia Loading Limit Factor (MGD) (MGD) (%) (mg/l) (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) (Qind) (Qpotw)(Rsec)= Rpotw (Ccrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) Arsenic 0.0507 3.58 1 1.5 0.00136 3.5293 45.238182 0.0400307 40.674333 96.193655 10 Cadmium 0.0507 3.58 60.35 5 0.000125 3.5293 376.50946 0.0036793 338.85483 801.38217 10 Chromium 0.0507 3.58 62.14 0.25 0.00115 3.5293 19.715531 0.0338495 17.710128 41.883956 10 Copper 0.0507 3.58 66.17 0.05 0.0362 3.5293 4.4128289 1.0655239 2.9060221 6.8726606 10 Lead 0.0507 3.58 89.01 0.5 0.000677 3.5293 135.83803 0.0199271 122.2343 289.0807 10 Mercury 0.0507 3.58 97.41 2 0.0000271 3.5293 2305.5753 0.0007977 2075.017 4907.3569 10 Molybdenum 0.0507 3.58 25.45 - 0.000994 3.5293 - 0.0292578 - - 15 Nickel 0.0507 3.58 19.54 0.25 0.00268 3.5293 9.2770321 0.0788841 8.2704448 19.55937 10 Selenium 0.0507 3.58 36.14 - 0.00075 3.5293 - 0.0220758 - - 10 Silver 0.0507 3.58 92.27 0.25 0.000143 3.5293 96.562743 0.0042091 86.902259 205.5214 10 Zinc 0.0507 3.58 42.43 0.29 0.117 3.5293 15.040104 3.4438204 9.3402682 22.089472 15 BOD 0.0507 3.58 98.23 - 212 3.5293 - - - 10
TSS 0.0507 3.58 98.7 - 150 3.5293 - - - 10
Ammonia 0.0507 3.58 99.25 - 29.3 3.5293 - - - 10
(Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Rsec) Removal efficiency across primary and secondary treatment as percent. NOTE: SEE REPORT SECTION 5.1, B AND APPENDIX B-4(Ccrit) Nitrification threshold inhibition level, mg/l. NOTE: SEE FINAL REPORT, TABLE 10.(Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind.(Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SUGGESTS 10% SAFETY FACTOR8.34 Unit conversion factorLhw = 8.34 * Ccrit * Qpotw 1 - Rsec
Filename: Appendix B2B3 2020 SW EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

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Packet Pg. 745
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-2
Stillwater WWTP Local Limits Calculation Spreadsheets
TABLE 5
Local Limits Determination Based on USEPA 503 Sludge Regulations

ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADIN INDUSTRIAL IU Pollut. POTW Sludge Percent Removal 503 Sludge Domestic &Commercia Allowable Domestic/ Allowable Local Safety Pollutant Flow Flow Flow Solids Efficiency Criteria Conc. Flow HeadworksCommercia Loading Limit Factor (MGD) (MGD) (MGD) (%) (%) (mg/kg) (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) (Qind) (Qpotw) (Qsldg) (PS) (Rpotw) (Cslcrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) Arsenic 0.0507 3.58 0.002304 14 1 41 0.00136 3.5293 11.581097 0.0400307 10.383 24.5554018 10 1.05 Cadmium 0.0507 3.58 0.002304 14 60.35 39 0.000125 3.5293 0.182538 0.0036793 0.1606 0.37982601 10 1.05 Chromium 0.0507 3.58 0.002304 14 62.14 0.00115 3.5293 - 0.0338495 - - 10 1.05 Copper 0.0507 3.58 0.002304 14 66.17 1500 0.0362 3.5293 6.403184 1.0655239 4.69734 11.1090813 10 1.05 Lead 0.0507 3.58 0.002304 14 89.01 300 0.000677 3.5293 0.9520249 0.0199271 0.8369 1.97923403 10 1.05 Mercury 0.0507 3.58 0.002304 14 97.41 17 0.0000271 3.5293 0.0492959 0.0007977 0.04357 0.10303871 10 1.05 Molybdenum 0.0507 3.58 0.002304 14 25.45 75 0.000994 3.5293 0.8324139 0.0292578 0.71991 1.70257824 10 1.05 Nickel 0.0507 3.58 0.002304 14 19.54 420 0.00268 3.5293 6.0714244 0.0788841 5.3854 12.7363148 10 1.05 Selenium 0.0507 3.58 0.002304 14 36.14 100 0.00075 3.5293 0.7815877 0.0220758 0.68135 1.61138108 10 1.05 Silver 0.0507 3.58 0.002304 14 92.27 0.000143 3.5293 - 0.0042091 - - 10 1.05 Zinc 0.0507 3.58 0.002304 14 42.43 2800 0.117 3.5293 18.640213 3.4438204 13.3324 31.530683 10 1.05 BOD 0.0507 3.58 0.002304 14 98.23 250 3.5293 - 7358.5905 - - 10 1.05 TSS 0.0507 3.58 0.002304 14 98.7 250 3.5293 - 7358.5905 - - 10 1.05 Ammonia 0.0507 3.58 0.002304 14 99.25 20.1 3.5293 - 591.63068 - - 10 1.05 (Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Qsldg) Sludge flow to disposal in MGD. NOTE: SEE FINAL REPORT, APPENDIX D(PS) Percent solids of sludge to disposal. NOTE: SEE FINAL REPORT, APPENDIX D(Rpotw) Removal efficiency across POTW as percent. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Cslcrit) 503 sludge criteria in mg/kg dry sludge. NOTE: SEE FINAL REPORT, TABLE 7.(Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind.(Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SUGGESTS 10% SAFETY FACTOR8.34 Unit conversion factorLhw = 8.34 * Cslcrit * (PS/100) * Qsldg * (Specific Gravity/100) Rpotw
Specific
gravity
of sludge
kg/L
Filename: Appendix B2B3 2020 SW EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

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Packet Pg. 746
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-2
Stillwater WWTP Local Limits Calculation Spreadsheets
TABLE 6
Local Limits Determination Based on State Sludge Criteria ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADING INDUSTRIAL State Sludge Criteria
IU Pollut. POTW Sludge Percent Removal State Sludge Domestic &Commercia Allowable Domestic/ Allowable Local Safety (mg/kg) Pollutant Flow Flow Flow Solids Efficiency Criteria Conc. Flow HeadworksCommercia Loading Limit Factor WET weight (MGD) (MGD) (MGD) (%) (%) (mg/kg) DRY weigh (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) see Cslcrit (Qind) (Qpotw) (Qsldg) (PS) (Rpotw) (Cslcrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) note below Arsenic 0.0507 3.58 0.001542 14 1 3571.429 0.00136 3.5293 643.014 0.040 578.673 1368.544 10 500 Cadmium 0.0507 3.58 0.001542 14 60.35 714.286 0.000125 3.5293 2.131 0.004 1.914 4.527 10 100 Chromium 0.0507 3.58 0.001542 14 62.14 17857.143 0.00115 3.5293 51.739 0.034 46.531 110.045 10 2500 Copper 0.0507 3.58 0.001542 14 66.17 17857.143 0.0362 3.5293 48.588 1.066 42.664 100.898 10 2500 Lead 0.0507 3.58 0.001542 14 89.01 7142.857 0.000677 3.5293 14.448 0.020 12.983 30.705 10 1000 Mercury 0.0507 3.58 0.001542 14 97.41 142.857 0.0000271 3.5293 0.264 0.001 0.237 0.560 10 20 Molybdenum 0.0507 3.58 0.001542 14 25.45 25000.000 0.000994 3.5293 176.860 0.029 159.145 376.374 10 3500 Nickel 0.0507 3.58 0.001542 14 19.54 14285.714 0.00268 3.5293 131.630 0.079 118.388 279.985 10 2000 Selenium 0.0507 3.58 0.001542 14 36.14 714.286 0.00075 3.5293 3.558 0.022 3.181 7.522 10 100 Silver 0.0507 3.58 0.001542 14 92.27 3571.429 0.000143 3.5293 6.969 0.004 6.268 14.823 10 500 Zinc 0.0507 3.58 0.001542 14 42.43 35714.286 0.117 3.5293 151.547 3.444 132.948 314.419 10 5000 BOD 0.0507 3.58 0.001542 14 98.23 250 3.176 - 6621.960 - - 10 TSS 0.0507 3.58 0.001542 14 98.7 250 3.176 - 6621.960 - - 10 Ammonia 0.0507 3.58 0.001542 14 99.25 20.1 3.176 - 532.406 - - 10 (Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Qsldg) Sludge flow to disposal in MGD. SEE FINAL REPORT. APPENDIX D(PS) Percent solids of sludge to disposal. NOTE: SEE FINAL REPORT, APPENDIX D(Rpotw) Removal efficiency across POTW as percent. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Cslcrit) (Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind. (Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SUGGESTS 10% SAFETY FACTOR8.34 Unit conversion factorLhw = 8.34 * Cslcrit * (PS/100) * Qsldg Rpotw
State sludge criteria in mg/kg dry sludge. NOTE: This is a calculated value using the State Sludge WET weight value shown in the column to the right of the table, and then calculated as follows: WETWeight LIMIT divided by % solids as a decimal. Example: 500/(14 % solids/100) = 3571.429 SEE FINAL REPORT, TABLE 8 Filename: Appendix B2B3 2020 SW EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

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Packet Pg. 747
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-2
Stillwater WWTP Local Limits Calculation Spreadsheets
TABLE 7
Local Limits Determination Based on Chronic Water Quality Standards

ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADIN INDUSTRIAL IU Pollut. POTW Upstream Upstream Removal Chronic Domestic &Commercia Allowable Domestic/ Allowable Local Safety Pollutant Flow Flow Flow Conc. Efficiency WQS Conc. Flow HeadworksCommercia Loading Limit Factor (MGD) (MGD) (MGD) (mg/l) (%) (mg/l) (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) (Qind) (Qpotw) (Qstr) (Cstr) (Rpotw) (Ccrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) Arsenic 0.0507 3.58 2132 0.0018 1 0.01 0.00136 3.5293 147.57756 0.0400307 132.78 314.020444 10 Cadmium 0.0507 3.58 2132 0.000020 60.35 0.00022 0.000125 3.5293 8.9854844 0.0036793 8.08326 19.1166752 10 Chromium 0.0507 3.58 2132 0.000474 62.14 0.084 0.00115 3.5293 3929.4078 0.0338495 3536.43 8363.56514 10 Copper 0.0507 3.58 2132 0.00171 66.17 0.0041 0.0362 3.5293 125.97907 1.0655239 112.316 265.623323 10 Lead 0.0507 3.58 2132 0.0000418 89.01 0.00092 0.000677 3.5293 142.33519 0.0199271 128.082 302.90973 10 Mercury 0.0507 3.58 2132 0.000000873 97.41 0.00077 0.0000271 3.5293 528.90907 0.0007977 476.017 1125.76771 10 Molybdenum 0.0507 3.58 2132 0.00044 25.45 0.01 0.000994 3.5293 228.41554 0.0292578 205.545 486.107511 10 Nickel 0.0507 3.58 2132 0.001192 19.54 0.024 0.00268 3.5293 504.92528 0.0788841 454.354 1074.53415 10 Selenium 0.0507 3.58 2132 0.000427 36.14 0.005 0.00075 3.5293 127.56225 0.0220758 114.784 271.460809 10 Silver 0.0507 3.58 2132 0.00000489 92.27 0.0007 0.000143 3.5293 160.16258 0.0042091 144.142 340.892053 10 Zinc 0.0507 3.58 2132 0.00294 42.43 0.016 0.117 3.5293 404.19664 3.4438204 360.333 852.177806 10 BOD 0.0507 3.58 2132 98.23 212 3.5293 10
TSS 0.0507 3.58 2132 98.7 150 3.5293 10
Ammonia 0.0507 3.58 2132 99.25 0.49 29.3 3.5293 10
(Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Qstr) Receiving stream (upstream) 7Q10 flow in MGD, ACCORDING TO THE WASTEWATER TREATMENT PLANT NPDES PERMIT, AND FINAL REPORT TABLE 5.2 (Cstr) Receiving stream background level in mg/l., NOTE: SEE FINAL REPORT APPENDIX C(Rpotw) Removal efficiency across POTW as percent. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Ccrit) State chronic water quality standard for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, TABLE 5.1(Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind.(Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SUGGESTS 10% SAFETY FACTOR8.34 Unit conversion factorLhw = 8.34 * (Ccrit * (Qstr + Qpotw) - (Cstr * Qstr)) 1 - Rpotw
Filename: Appendix B2B3 2020 SW EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

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Packet Pg. 748
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-2
Stillwater WWTP Local Limits Calculation Spreadsheets
TABLE 8
Local Limits Determination Based on Acute Water Quality Standards

ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADIN INDUSTRIAL IU Pollut. POTW Upstream Upstream Removal Acute Domestic &Commercia Allowable Domestic/ Allowable Local Safety Pollutant Flow Flow Flow Conc. Efficiency WQS Conc. Flow HeadworksCommercia Loading Limit Factor (MGD) (MGD) (MGD) (mg/l) (%) (mg/l) (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) (Qind) (Qpotw) (Qstr) (Cstr) (Rpotw) (Ccrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) Arsenic 0.0507 3.58 2132 0.0018 1 0.01 0.00136 3.5293 147.57756 0.0400307 132.78 314.020444 10 Cadmium 0.0507 3.58 2132 0.00002 60.35 0.00022 0.000125 3.5293 8.9854844 0.0036793 8.08326 19.1166752 10 Chromium 0.0507 3.58 2132 0.000474 62.14 0.26 0.00115 3.5293 12209.095 0.0338495 10988.2 25986.6711 10 Copper 0.0507 3.58 2132 0.00171 66.17 0.0056 0.0362 3.5293 204.95071 1.0655239 183.39 433.712464 10 Lead 0.0507 3.58 2132 0.0000418 89.01 0.024 0.000677 3.5293 3882.7521 0.0199271 3494.46 8264.29255 10 Mercury 0.0507 3.58 2132 0.000000873 97.41 0.0014 0.0000271 3.5293 962.14322 0.0007977 865.928 2047.89565 10 Molybdenum 0.0507 3.58 2132 0.00044 25.45 0.01 0.000994 3.5293 228.41554 0.0292578 205.545 486.107511 10 Nickel 0.0507 3.58 2132 0.001192 19.54 0.22 0.00268 3.5293 4843.6085 0.0788841 4359.17 10309.3117 10 Selenium 0.0507 3.58 2132 0.000427 36.14 0.02 0.00075 3.5293 545.91655 0.0220758 491.303 1161.91737 10 Silver 0.0507 3.58 2132 0.00000489 92.27 0.00071 0.000143 3.5293 162.46669 0.0042091 146.216 345.796284 10 Zinc 0.0507 3.58 2132 0.00294 42.43 0.016 0.117 3.5293 404.19664 3.4438204 360.333 852.177806 10 BOD 0.0507 3.58 2132 98.23 212 3.5293 - 6240.0847 - - 10 TSS 0.0507 3.58 2132 98.7 150 3.5293 - 4415.1543 - - 10 Ammonia 0.0507 3.58 2132 99.25 1.77 29.3 3.5293 4203334 862.42681 3782138 8944650.56 10 (Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Qstr) Receiving stream (upstream) 1Q10 flow in MGD, ACCORDING TO THE WASTEWATER TREATMENT PLANT NPDES PERMIT, AND FINAL REPORT TABLE 6.2(Cstr) Receiving stream background level in mg/l., NOTE: SEE FINAL REPORT APPENDIX C(Rpotw) Removal efficiency across POTW as percent. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Ccrit) State acute water quality standard for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, TABLE 6.1(Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind.(Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SU

8.34 Unit conversion factorLhw = 8.34 * (Ccrit * (Qstr + Qpotw) - (Cstr * Qstr)) 1 - Rpotw
Filename: Appendix B2B3 2020 SW EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

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Packet Pg. 749
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-2
Stillwater WWTP Local Limits Calculation Spreadsheets
TABLE 9
Local Limits Determination Based on Anaerobic Digester Inhibition Level Inhibition values were referenced from the Local Limits Development Guidance and the EPA Guidance for Preventing Interference at POTW's, The median inhibition value was used for calculations

ENVIRONMENTAL CRITERIA AND PROCESS DATA BASE MAXIMUM LOADIN INDUSTRIAL IU Pollut. POTWSludge Flow Removal Anaerobic Digeste Domestic & Commercia Allowable Domestic/ Allowable Local Safety Pollutant Flow Flow to Digester Efficiency Inhibition Level Conc. Flow Headworks Commercia Loading Limit Factor (MGD) (MGD) (MGD) (%) (mg/l) (mg/l) (MGD) (lbs/day) (lbs/day) (lbs/day) (mg/l) (%) (Qind) (Qpotw) (Qdig) (Rpotw) (Ccrit) (Cdom) (Qdom) (Lhw) (Ldom) (Lind) (Cind) (SF) Arsenic 0.0507 3.58 0.019931 1 1.6 0.00136 3.5293 26.595926 0.0400307 10 Cadmium 0.0507 3.58 0.019931 60.35 10 0.000125 3.5293 2.754342 0.0036793 10 Chromium 0.0507 3.58 0.019931 62.14 65 0.00115 3.5293 17.387504 0.0338495 10 Copper 0.0507 3.58 0.019931 66.17 50 0.0362 3.5293 12.560416 1.0655239 10 Lead 0.0507 3.58 0.019931 89.01 195 0.000677 3.5293 36.415892 0.0199271 10 Mercury 0.0507 3.58 0.019931 97.41 1400 0.0000271 3.5293 238.90192 0.0007977 10 Molybdenum 0.0507 3.58 0.019931 25.45 - 0.000994 3.5293 - 0.0292578 10 Nickel 0.0507 3.58 0.019931 19.54 100 0.00268 3.5293 85.068854 0.0788841 10 Selenium 0.0507 3.58 0.019931 36.14 - 0.00075 3.5293 - 0.0220758 10 Silver 0.0507 3.58 0.019931 92.27 39 0.000143 3.5293 7.0258557 0.0042091 10 Zinc 0.0507 3.58 0.019931 42.43 200 0.117 3.5293 78.352364 3.4438204 10 BOD 0.0507 3.58 0.019931 98.23 - 212 10TSS 0.0507 3.58 0.019931 98.7 - 150 10Ammonia 0.0507 3.58 0.019931 99.25 - 29.3 10(Qind) Industrial User flow in Million Gallons per Day (MGD). NOTE: SEE FINAL REPORT, APPENDIX B-5.(Qpotw) POTW's average influent flow in MGD. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Qdig) Sludge flow to digester in MGD. NOTE: SEE FINAL REPORT, APPENDIX D(Rpotw) Removal efficiency across POTW as percent. NOTE: SEE FINAL REPORT, APPENDIX B-4.(Ccrit) Anaerobic digester threshold inhibition level in mg/l. NOTE: SEE FINAL REPORT, TABLE 11(Qdom) Domestic/commercial background flow in MGD.NOTE: CALCULATED VALUE Qpotw - Qind.(Cdom) Domestic/commercial background concentration for a particular pollutant in mg/l. NOTE: SEE FINAL REPORT, APPENDIX E(Lhw) Maximum allowable headworks pollutant loading to the POTW in pounds per day (lbs/day).CALCULATED VALUE(Ldom) Domestic/commercial background loading to the POTW for a particular pollutant in pounds per day (lbs/day).CALCULATED VALUE(Lind) Maximum allowable industrial loading to the POTW in pounds per day.CALCULATED VALUE(Cind) Industrial allowable local limit for a given pollutant in mg/l. CALCULATED VALUE(SF) Safety factor as a percent. EPA GUIDANCE SUGGESTS 10% SAFETY FACTOR8.34 Unit conversion factorLhw = 8.34 * Ccrit * Qdig Rpotw
Stillwater
WWTP does
not have
anaerobic
digesters. This
limiting factor
does not apply
to Stillwater
WWTP.

Filename: Appendix B2B3 2020 SW EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

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Packet Pg. 750
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-3

CLEAR CREEK WWTP LOCAL LIMITS SUMMARY
Clear Creek WWTP Local Limits Comparison Summary (mg/L) EPA Region 5 Spreadsheet
Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 NPDES
Daily Eff
Limit
NPDES
Monthly Avg
Limit
A.S.

Inhibition Nitrification
503 Sludge
Regs (dry
wt basis)

CA TTLC
(wet wt
basis)
Chronic
WQ
Criteria
Acute WQ
Criteria
Anaerobic
Dig Inhib
CA Haz
Waste
STLC (mg/l)
Clear Creek 2020 Minimum
2015 Clear Creek Limits
2015 Local Limits Adopted
2020 Clear Creek
proposed limit
Arsenic - - 2.51 49 4.33 69 66 0.47 5.0 0.47 0.371 0.371 no changeCadmium - - 17 423 0.34 4.3 4 1.23 1.0 0.339 0.142 0.142 no changeChromium - - 40 30.75 7.63 2588 7592 7.12 5.00 5.00 26.20 5.00 no changeCopper 2.60 1.24 2.15 4.7 6.69 78 115 4.50 25 1.24 2.68 2.68 change to 1.24Lead - - 4.06 122 2.72 55 1395 19.19 5.00 2.72 0.99 0.99 no changeMercury - - 6.52 4230.227 0.049 409.7 703 126.22 0.200 0.049 0.0540 0.0540 change to 0.049Molybdenum - - - - 21.54 94.486 89.183 - 350 21.54 3.3 2.2 no change Nickel - - 35 10.16 11.45 232 2124 20.62 20 10.16 2.1 2.1 no changeSelenium - - - - 0.45 57 232 - 1.00 0.45 0.355 0.355 no changeSilver - - 3.0 181.764 1.28 129 121 3.59 5.0 1.28 3.02 3.02 change to 1.28Zinc 5.3 2.82 8.06 17.0 16.45 235 221 24.73 250 2.82 3.94 3.94 change to 2.82BOD 27145.2 5602 - - - - - - - - 5602 6809 2000 no changeTSS 67546.5 20544 - - - - - - - - 20544 57882 1500 no changeAmmonia - 9104 1468829 - - - 427798 1460067 - - 9104 2914 350 no change Clear Creek
WWTP
does not currently
land apply
sludge.

This limiting
factor does
not apply to
Clear Creek
WWTP at
this time.

Filename: Appendix B1B3 2020 CC EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

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Packet Pg. 751
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-3

STILLWATER WWTP LOCAL LIMITS SUMMARY
Stillwater Limits Comparison (mg/l)
EPA Region 5 Spreadsheet
Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 NPDES Daily
Eff Limit
NPDES
Monthly Avg
Limit
A.S.

Inhibition Nitrification
503 Sludge
Regs (dry
wt basis)

CA TTLC
(wet wt
basis)
Chronic
WQ Criteria
Acute WQ
Criteria
Anaerobic
Dig Inhib
CA Haz
Waste
STLC (mg/l) Minimum
2015
Stillwater Limits
2015
Local Limits
2020 proposed limit
(based on Clear
Creek)
Arsenic - - 6.26 96 1368.54 314 314 5.0 5.00 1.760 0.371 no change Cadmium - - 32 801 4.53 19.1 19 1.0 1.000 0.420 0.142 no changeChromium - - 63 41.88 110.05 8364 25987 5.00 5.00 123.00 5.00 no changeCopper 7.25 3.68 3.84 6.9 100.90 266 434 25 3.68 5.53 2.68 change to 1.24Lead - - 6.31 289 30.71 303 8264 5.00 5.00 2.42 0.99 no changeMercury - - 6.35 4907.357 0.56 1125.8 2048 0.200 0.200 0.1290 0.0540 change to 0.049 Molybdenum - - - - 376.37 486.108 486.108 350 350.00 2.2 2.2 no changeNickel - - 63 19.56 279.99 1075 10309 20 19.56 5.7 2.1 no changeSelenium - - - - 7.52 271 1162 1.00 1.00 1.080 0.355 no changeSilver - - 6.3 205.521 14.82 341 346 5.0 5.00 30.80 3.02 change to 1.28Zinc 25.0 11.73 10.92 22.1 314.42 852 852 250 10.92 8.78 3.94 change to 2.82BOD - 21146 - - - - - - - 21146 45700 2000 no changeTSS - 38443 - - - - - - - 38443 74893 1500 no change Ammonia - 3214 28464.53 - - - - 8944651 - 3214 692 350 no change Stillwater
WWTP
does not
have
anaerobic
digesters.

This
limiting
factor
does not
Stillwater
WWTP does
not currently
land apply
sludge. This
limiting factor
does not
apply to
Stillwater
WWTP at
this time.

Filename: Appendix B2B3 2020 SW EPA_R5 Local Limits Spreadsheets Date Printed: 7/2/2020

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Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-4

CLEAR CREEK WWTP REMOVAL EFFICIENCY AND FLOW

SAMPLE ID

DATE/TIME SAMPLED
ARSENIC µg/L
CADMIUM µg/L
CHROMIUM(T) µg/L
COPPER µg/L
LEAD µg/L
MERCURY µg/L
MOLYBDENUM µg/L
NICKEL µg/L
SELENIUM µg/L
SILVER µg/L
ZINC µg/L
FLOW dry weather
FLOW Annnual
BOD
TSS

AMMONIA
CC INF 08/05/13 3.21 0.212 4.16 52.8 1.7 0.134 1.43 4.52 < 1.57 0.666 118 7.5 7.7 CC INF 08/27/14 2.43 0.128 0.87 27 1.64 0.243 1.02 2.9 2.55 0.315 111 6.6 8.4CC INF 08/26/15 3.65 0.139 1.23 50.2 1.23 0.137 1.38 3.68 1.63 0.474 138 5.7 7.0 CC INF 09/08/16 2.23 0.16 1.363 41.1 1.28 0.161 0.945 4.61 1.77 0.207 131 5.9 9.1 CC INF 08/08/17 2.39 0.181 1.59 55.5 1.36 0.0873 2.03 4.44 1.11 J 0.255 117 6.1 9.3 CC INF 08/22/18 2.35 0.126 0.94 31.5 0.984 0.125 1.24 3.28 < 0.89 0.088 114 5.9 7.29CC INF 08/20/19 3.26 0.16 1.73 52.5 1.3 0.0341 1.09 6.23 < 0.7 0.22 114 6.3 9.65CC EFF 08/05/13 2.24 0.024 0.35 5.09 0.131 0.0007 0.677 2.43 0.49 J 0.008 J 39.7 CC EFF 08/27/14 2.55 0.044 0.36 10.7 0.18 0.00225 0.931 2.13 0.82 0.022 J 48.4CC EFF 08/26/15 2.35 0.036 0.28 6.73 0.153 0.00148 0.711 2.25 1.13 0.008 J 38.1 CC EFF 09/08/16 1.95 0.05 0.33 13.4 0.109 0.00194 0.851 2.61 1.13 0.013 J 47.8CC EFF 08/08/17 1.66 0.056 0.36 12.5 0.096 0.0015 0.688 2.86 0.53 J 0.006 J 45.9CC EFF 08/22/18 1.73 0.044 0.28 6.99 0.132 0.00089 0.982 2.13 0.51 0.004 42.2 CC EFF 08/20/19 1.48 0.05 J 0.28 7.23 0.103 0.00111 0.61 2.46 < 0.14 < 0.01 29.3 YEAR
% REMOVAL =((INF‐EFF)/INF)*100 2013 30.22 88.68 91.59 90.36 92.29 99.48 52.66 46.24 68.79 98.80 66.36 97.90 98.50 99.65 % REMOVAL =((INF‐EFF)/INF)*100 2014 ‐4.94 65.63 58.62 60.37 89.02 99.07 8.73 26.55 67.84 93.02 56.40 97.90 99.10 98.78 % REMOVAL =((INF‐EFF)/INF)*100 2015 35.62 74.10 77.24 86.59 87.56 98.92 48.48 38.86 30.67 98.31 72.39 97.80 99.10 98.86 % REMOVAL =((INF‐EFF)/INF)*100 2016 12.56 68.75 75.79 67.40 91.48 98.80 9.95 43.38 36.16 93.72 63.51 97.80 99.30 99.13% REMOVAL =((INF‐EFF)/INF)*100 2017 30.54 69.06 77.36 77.48 92.94 98.28 66.11 35.59 52.25 97.65 60.77 97.20 98.90 99.75 % REMOVAL =((INF‐EFF)/INF)*100 2018 26.38 65.08 70.21 77.81 86.59 99.29 20.81 35.06 42.70 95.45 62.98 98.40 99.20 99.34 % REMOVAL =((INF‐EFF)/INF)*100 2019 54.60 68.75 83.82 86.23 92.08 96.74 44.04 60.51 80.00 95.45 74.30 97.90 99.00 99.79 Average (2013‐2019) 8.35 97.84 99.01 99.33
Mean Removal Efficiency 2013‐2019
(Avg CC INF ‐ Avg CC EFF)/Avg CC INF 28.5 72.5 81.1 79.8 90.5 98.9 40.3 43.1 53.5 96.8 65.4 Removal efficiencies are calculated using the MRE method for non-lagged data. Sum up all influent values. Sum up all effluent values. Get total % removal. [(Sum inf – sum eff )/ sum inf]*100 Statistical Data Outlier Evlauation % Removal outliers are highlighted in yellow. Since the data set is small (7 data pairs), no outliers were removed from the% removal data set 1st quartile 19.4695 67.188 73 72.44 88.29 98.538409 15.38 35.32 39.43 94.59 61.88 3rd quartile 33.0802 71.581 80.59 86.41 92.19 99.181037 50.57 44.81 68.32 97.98 69.373rdQ‐1stQ, interquartile(IQ) range 13.6107 4.3932 7.586 13.97 3.893 0.642628 35.19 9.488 28.89 3.392 7.498data lower limit = 1stQ‐1.5x IQ range ‐0.9465 60.598 61.62 51.48 82.45 97.574467 ‐37.41 21.09 ‐3.906 89.5 50.63 data upper limit = 3rdQ+1.5 x IQ range 53.4962 78.171 91.97 107.4 98.02 100.14498 103.4 59.04 111.7 103.1 80.62 NOTE: OUTLIERS ARE HIGHLIGHTED BUT ARE RETAINED IN THE DATA SET.

S:\Industrial Waste\Local Limits\2020 Local Limits Update\Appendix B4 2020 WWTP flows and removal efficiencies 7/2/2020
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Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-4

STILLWATER WWTP REMOVAL EFFICIENCY AND FLOW

SAMPLE ID

SAMPLED

DATE/TIME
ARSENIC µg/L
CADMIUM µg/L
CHROMIUM(T) µg/L
COPPER µg/L
LEAD µg/L
MERCURY µg/L
MOLYBDENUM µg/L
NICKEL µg/L
SELENIUM µg/L
SILVER µg/L
ZINC µg/L
FLOW dry weather
FLOW Annnual
BOD
TSS

AMMONIA
DataTable Liquids metals &DataTable L <As ARSENIC µJ A<Cd CADMI J <Cr(T) CHROMJ C<Cu COPPERJ <Pb LEAD µgJ <Hg MERCURJ < Mo MOLYBDJ M<Ni NICKEL µJ N<Se SELENIUJ Ag SILVER J A <Zn ZINC µg/J Zn SW INF 10/09/13 2.59 0.161 0.7 51.7 0.62 0.0246 1.04 2.13 1.19 J 0.164 130 2.0 2.85 SW INF 10/09/14 2.47 0.158 0.66 33.8 0.798 0.0202 1.23 2.03 1.62 0.017 J 132 2.0 3.22 SW INF 08/12/15 1.89 0.156 1.11 44.8 1.21 0.0223 2.26 3.7 0.84 0.154 141 1.9 2.81 SW INF 11/10/15 1.58 0.193 1.04 37.7 1.06 0.0252 2.72 2.94 < 0.89 0.064 98.6SW INF 02/10/16 1.85 0.160 0.88 33.7 0.676 0.0175 0.918 3.9 < 0.89 0.103 62.4 2.1 4.13 SW INF 05/11/16 0.71 0.089 0.78 46.4 0.598 0.0222 1.9 2.15 < 0.89 0.252 80.5 SW INF 09/07/17 1.43 0.241 1.69 48 1.23 0.0659 2.02 4.64 < 0.89 0.140 163 2.3 4.2SW INF 09/05/18 0.99 0.130 1.32 49.2 1.83 0.0481 2.01 3.75 < 0.89 0.085 129 2.3 3.24SW INF 09/25/19 1.18 J 0.180 J 1.25 59.7 0.99 0.0937 1.77 3.21 < 0.7 0.146 125 2.5 4.58SW EFF 10/09/13 1.74 0.050 0.29 10.5 0.076 0.0012 0.742 2.59 0.58 J 0.012 J 66.4 SW EFF 10/09/14 2.88 0.078 0.39 11.6 0.079 0.0009 1.25 2.74 1.36 0.008 J 94.2 SW EFF 08/12/15 2.29 0.054 0.44 21.2 0.133 0.0012 3.34 3.51 0.79 0.003 J 77.2 SW EFF 11/10/15 1.48 0.068 0.33 17.3 0.158 0.001 1.2 2.18 0.59 0.011 J 68.4 SW EFF 02/10/16 1.65 0.030 0.33 12.1 0.073 0.0008 0.635 1.29 0.46 J 0.011 J 34.9 SW EFF 05/11/16 0.73 0.035 0.3 14.6 0.1 0.0005 J 0.832 1.72 0.73 0.013 J 50.2SW EFF 09/07/17 1.77 0.110 0.42 22.9 0.139 0.0008 1.62 3.57 < 0.44 0.012 J 88.3 SW EFF 09/05/18 1.43 0.097 0.37 14.8 0.173 0.001 1.31 2.82 0.48 0.007 85.2 SW EFF 09/25/19 1.22 0.060 J 0.7 12 0.059 0.0013 0.9 2.47 0.19 < 0.010 46.3 YEAR
% REMOVAL =((INF‐EFF)/IN2013 32.82 68.94 58.57 79.69 87.74 94.96 28.65 ‐21.60 51.26 92.68 48.92 98.40 98.70 99.49 % REMOVAL =((INF‐EFF)/IN2014 ‐16.60 50.63 40.91 65.68 90.10 95.69 ‐1.63 ‐34.98 16.05 52.94 28.64 98.60 98.90 98.59 % REMOVAL =((INF‐EFF)/IN2015 ‐21.16 65.38 60.36 52.68 89.01 94.48 ‐47.79 5.14 5.95 98.05 45.25 98.70 98.90 99.51 % REMOVAL =((INF‐EFF)/IN2015 6.33 64.77 68.27 54.11 85.09 95.99 55.88 25.85 33.71 82.81 30.63 % REMOVAL =((INF‐EFF)/IN2016 10.81 81.25 62.50 64.09 89.20 95.26 30.83 66.92 48.31 89.32 44.07 98.30 98.60 99.22 % REMOVAL =((INF‐EFF)/IN2016 ‐2.82 60.67 61.54 68.53 83.28 97.79 56.21 20.00 17.98 94.84 37.64 % REMOVAL =((INF‐EFF)/IN2017 ‐23.78 54.36 75.15 52.29 88.70 98.79 19.80 23.06 50.56 91.43 45.83 97.70 98.60 99.20 % REMOVAL =((INF‐EFF)/IN2018 ‐44.44 25.38 71.97 69.92 90.55 97.92 34.83 24.80 46.07 91.76 33.95 98.30 98.80 99.31% REMOVAL =((INF‐EFF)/IN2019 ‐3.39 66.67 44.00 79.90 94.04 98.58 49.15 23.05 72.86 93.15 62.96 97.60 98.40 99.40 AVERAGE (2013‐2019) 3.58 98.23 98.70 99.25
Mean Removal Efficiency 2013‐2019 Removal efficiencies are calculated using the MRE method for non-lagged data. Sum up all influent values. Sum up all effluent values. Get total % removal. 100*[(Avg CC INF ‐ Avg CCEFF)/Avg CC INF] ‐3.403676 60.35 62.14 66.17 89.01 97.41 25.45 19.54 36.14 92.27 42.43 Statistical Data Outlier Evlauation % Removal outliers are highlighted in yellow. Since the data set is small (7 data pairs), no outliers were removed from the% removal data set 1st quartile ‐21.16402 54.36 58.57 54.11 87.742 95.2571 19.802 5.13514 17.978 89.32 33.953 3rd quartile 6.329114 66.67 68.27 69.92 90.1 97.921 49.153 24.8 50.562 93.15 45.8283rdQ‐1stQ, interquartile(IQ) range 27.49314 12.31 9.698 15.81 2.3583 2.66386 29.351 19.6649 32.584 3.83 11.875 data lower limit = 1stQ‐1.5x IQ range ‐62.40372 35.89 44.02 30.4 84.204 91.2614 ‐24.224 ‐24.362 ‐30.899 83.57 16.141 data upper limit = 3rdQ+1.5 x IQ range 47.56882 85.13 82.82 93.63 93.638 101.917 93.178 54.2973 99.438 98.9 63.64 NOTE: OUTLIERS ARE HIGHLIGHTED BUT ARE RETAINED IN THE DATA SET.

NOTE for Arsenic: The % removal values for As are often negative, i.e. the effluent results are higher than the influent results. A negative number or a zero in the % removal column makes some of the local limits calculations unuseable. We have therefore chosen to represent the % removal of As at SWWTP with a 1% value. The number 1 does not alter the math and is the closest we can estimate to the real world situation where Arsenic removal is close to zero.

S:\Industrial Waste\Local Limits\2020 Local Limits Update\Appendix B4 2020 WWTP flows and removal efficiencies 7/2/2020

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- - -.--
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Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX B-5
INDUSTRIAL USER FLOW (Qind)
2013-2019 Clear Creek WWTP and Pretreatment Annual Report Data CC Industrial
gallons per
day (gpd)
CC Qind
Million Gallons
per day (MGD)
Fall River Brewing Co (3 x current flow is maximum build out) 12,000Benton 65,000Foothill 150,000Big Valley Sanitation (permitted flow) 96,000Qind CCWWTP Maximum Industrial User Flow (gpd) 323,000 0.3232013-2019 Stillwater WWTP and Pretreatment Annual Report Data SW Industrial
gallons per
day (gpd)
SW Qind
Million Gallons
per day (MGD)
Ameritech 25Solid Waste 6,170SAF 22,100SECO 2,400USFS Air Attack Base 20,000WonderMetals 25Qind SWTP Maximum Industrial User Flow (gpd) 50,720 0.051 S:\Industrial Waste\Local Limits\2020 Local Limits Update\Appendix B5 2020 SIU flows Date Printed:7/2/2020

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Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX C-1
UPSTREAM CONCENTRATIONS (Cstr)

CLEAR CREEK
WWTP

UPSTREAM RIVER

ARSENIC
µg/L

CADMIUM
µg/L

CHROMIUM(T)
µg/L
COPPER
µg/L LEAD µg/L MERCURY µg/L MOLYBDENUM µg/L NICKEL µg/L SELENIUM µg/L SILVER µg/L ZINC µg/L CC RIVER 001 2/5/2013 9:40 0.03 2.82 4.18
CC RIVER 001 5/6/2013 11:45 0.016 1.61 1.5
CC RIVER 001 8/5/2013 11:15 1.52 0.022 0.53 0.98 0.051 0.00061 0.38 1.77 0.5 j 0.004 J 0.99 CC RIVER 001 8/27/2014 8:43 2.23 0.021 0.48 0.94 0.029 J 0.00057 0.467 1.01 0.53 J 0.005 J 2.3 CC RIVER 001 8/26/2015 11:20 1.68 0.021 0.47 1.22 0.018 J 0.0006 0.426 1.52 0.78 < 0.02 1.62 CC RIVER 001 8/8/2017 11:43 0.86 0.017 J 0.5 1.31 0.04 0.00104 0.229 2.05 0.66 0.002 J 2.47 CC RIVER 001 8/22/2018 12:13 1.94 0.012 J 0.49 0.98 0.019 J 0.00045 0.439 0.92 < 0.44 < 0.002 1.35 CC RIVER 001 8/20/2019 11:21 0.94 < 0.02 0.49 1.11 0.047 J 0.00076 0.28 1.47 < 0.14 < 0.01 1.53 CC RIVER 001 Average/1000 = mg/l 0.00153 0.0000199 0.000493 0.00137 0.000034 0.000000672 0.00037 0.00146 0.000508 0.00000717 0.00199

STILLWATER
WWTP

UPSTREAM RIVER

ARSENIC
µg/L

CADMIUM
µg/L

CHROMIUM(T)
µg/L
COPPER
µg/L LEAD µg/L MERCURY µg/L MOLYBDENUM µg/L NICKEL µg/L SELENIUM µg/L SILVER µg/L ZINC µg/L SW RIVER 001 10/9/2013 11:40 1.92 0.014 J 0.43 0.91 0.024 J 0.0007 0.389 0.94 < 0.44 < 0.002 0.93 SW RIVER 001 10/9/2014 11:30 2.64 0.016 J 0.3 0.98 0.023 J 0.00053 0.757 0.56 < 0.44 < 0.002 1.22 SW RIVER 001 8/12/2015 12:30 1.68 0.008 J 0.47 1.26 0.018 J 0.00061 0.425 1.66 < 0.44 0.004 J 1.47 SW RIVER 001 11/10/2015 12:27 2.22 0.018 J 0.37 1.07 0.025 J 0.00069 0.549 0.76 < 0.44 0.003 J 1.29 SW RIVER 001 2/10/2016 12:02 2.5 0.026 0.56 2.8 0.075 0.00153 0.516 0.76 < 0.44 0.007 J 3.87 SW RIVER 001 5/11/2016 11:20 1.41 0.049 0.6 4.6 0.079 0.00136 0.23 1.6 0.62 0.007 J 6.93 SW RIVER 001 9/7/2017 11:43 1.05 0.017 J 0.58 1.52 0.058 0.00114 0.285 2.06 < 0.44 0.007 J 7.34 SW RIVER 001 9/5/2018 10:50 1.8 0.012 J 0.47 1.07 0.026 J 0.00041 0.49 0.96 < 0.44 0.002 J 1.71 SW RIVER 001 9/25/2019 11:11 1.01 0.02 J 0.49 1.15 0.048 J 0.00089 0.32 1.43 < 0.14 < 0.01 1.71 SW RIVER 001 Average/1000 = mg/l 0.00180 0.000020 0.000474 0.00171 0.0000418 0.000000873 0.00044 0.001192 0.000427 0.00000489 0.00294 S:\Industrial Waste\Local Limits\2020 Local Limits Update\Appendix C1 Sacramento River Data Date Printed: 7/2/2020

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Packet Pg. 756
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge

STATE WATER RESOURCES CONTROL BOARD
A Compilation of
Water Quality Goals
17th Edition
January 2016

CALIFORNIA ENVIRONMENTAL PROTECTION AGENCY
Appendix C-2
Sacramento River Water Quality Limits
Packet Pg. 757 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) Appendix C-2
Sacramento River Water Quality Limits
CAS
(Synonym) Number
Ammonia Tastes and Odors Odor threshold (Amoore and Hautala) 1,500 ug/L G & IS X X X X 7664-41-7 (and Ammonium) Toxicity - humans USEPA Draft Health Advisory 30,000 ug/L G & IS Toxicity - fw aquatic life USEPA National Recomm. WQ Criteria, 4-day avg, as N (i) 490 ug/L IS X USEPA National Recomm. WQ Criteria, 1-hour avg, as N (j) 1,770 ug/L IS Toxicity - sw aquatic life USEPA National Recomm. WQ Criteria, 4-day avg, as N (k) 100 ug/L E X 250 ug/L O
USEPA National Recomm. WQ Criteria, 1-hour avg, as N (k) 690 ug/L E 1,800 ug/L O
CA Ocean Plan - aq life Aquatic Life Protection Objective, 6-month median, as N 600 ug/L O X Aquatic Life Protection Objective, daily maximum, as N 2,400 ug/L O Aquatic Life Protection Objective, instantaneous max, as N 6,000 ug/L O Arsenic Chemical Constituents California Primary MCL 10 ug/L G & IS X 7440-38-2 Water Quality for Agriculture (Ayers & Westcot) 100 ug/L G & IS X X Toxicity - humans California Public Health Goal for Drinking Water 0.004 ug/L G & IS X X USEPA National Recomm. WQ Criteria, water & fish consump. 0.018 ug/L IS X XUSEPA National Recomm. WQ Criteria, fish consumption 0.14 ug/L E & O XX CTR - fw aquatic life California Toxics Rule (USEPA), 4-day average (dissolved) 150 ug/L IS California Toxics Rule (USEPA), 1-hour average (dissolved) 340 ug/L IS CTR - sw aquatic life California Toxics Rule (USEPA), 4-day average (dissolved) 36 ug/L E California Toxics Rule (USEPA), 1-hour average (dissolved) 69 ug/L E CA Ocean Plan - aq life Aquatic Life Protection Objective, 6-month median 8 ug/L O Aquatic Life Protection Objective, daily maximum 32 ug/L O Aquatic Life Protection Objective, instantaneous maximum 80 ug/L O Cadmium Chemical Constituents California Primary MCL 5 ug/L G & IS X X Water Quality for Agriculture (Ayers & Westcot) 10 ug/L G & IS X X Toxicity - humans California Public Health Goal for Drinking Water 0.04 ug/L G & IS X XCTR - fw aquatic life California Toxics Rule (USEPA), 4-day average, dissolved (l) 1.1 ug/L IS X California Toxics Rule (USEPA), 1-hour average, dissolved (l) 1.6 ug/L IS CTR - sw aquatic life California Toxics Rule (USEPA), 4-day average, dissolved 9.3 ug/L E & O X California Toxics Rule (USEPA), 1-hour average, dissolved 42 ug/L E & O CA Ocean Plan - aq life Aquatic Life Protection Objective, 6-month median 1 ug/L O X Aquatic Life Protection Objective, daily maximum 4 ug/L O Aquatic Life Protection Objective, instantaneous maximum 10 ug/L O Chromium (III) Chemical Constituents California Primary MCL (total chromium) 50 ug/L G & IS X X X X 16065-83-1 Toxicity - humans USEPA IRIS Reference Dose (c) 10,500 ug/L G & ISNTR - fw aquatic life National Toxics Rule (USEPA), 4-day average, dissolved (l) 84 ug/L IS X National Toxics Rule (USEPA), 1-hour average, dissolved (l) 260 ug/L IS CA Ocean Plan - humansHuman Health Protection Objective, fish consumption 190,000 ug/L OToxicity - sw aquatic life USEPA National Recomm. WQ Criteria, acute tox info / 10 1,030 ug/L E & O X X Copper Chemical Constituents California Primary MCL 1,300 ug/L G & IS 7440-50-8 California Secondary MCL 1,000 ug/L G & IS X X X
Water Quality for Agriculture (Ayers & Westcot) 200 ug/L G & IS X X Tastes and Odors California Secondary MCL & USEPA Nat. Rec. WQ Criteria 1,000 ug/L G & ISToxicity - humans California Public Health Goal for Drinking Water 300 ug/L G XCTR - humans California Toxics Rule (USEPA) for sources of drinking water 1300 ug/L ISCTR - fw aquatic life California Toxics Rule (USEPA), 4-day average, dissolved (l) 4.1 ug/L IS X California Toxics Rule (USEPA), 1-hour average, dissolved (l) 5.7 ug/L IS CTR - sw aquatic life California Toxics Rule (USEPA), 4-day average, dissolved 3.1 ug/L E X California Toxics Rule (USEPA), 1-hour average, dissolved 4.8 ug/L E CA Ocean Plan - aq life Aquatic Life Protection Objective, 6-month median 3 ug/L O X Aquatic Life Protection Objective, daily maximum 12 ug/L O Aquatic Life Protection Objective, instantaneous maximum 30 ug/L O Lead Chemical Constituents California Primary MCL 15 ug/L G & IS X X 7439-92-1 Water Quality for Agriculture (Ayers & Westcot) 5,000 ug/L G & IS X X Toxicity - humans California Public Health Goal for Drinking Water 0.2 ug/L G & IS X XCTR - fw aquatic life California Toxics Rule (USEPA), 4-day average, dissolved (l) 0.92 ug/L IS X California Toxics Rule (USEPA), 1-hour average, dissolved (l) 24 ug/L IS CTR - sw aquatic life California Toxics Rule (USEPA), 4-day average, dissolved 8.1 ug/L E X California Toxics Rule (USEPA), 1-hour average, dissolved 210 ug/L E CA Ocean Plan - aq life Aquatic Life Protection Objective, 6-month median 2 ug/L O X Aquatic Life Protection Objective, daily maximum 8 ug/L O Aquatic Life Protection Objective, instantaneous maximum 20 ug/L O NOTE: For Chronic and Acute Arsenic limits, the Basin Plan , Table 3-1, Trace Element Water Quality Objectives is more restrictive than all other numeric thresholds at 0.01 mg/l Arsenic in the Sacramento River from Keswick Dam to the City of SacramentoNOTE: For Acute Copper, the Basin Plan , Table 3-1, Trace Element Water Quality Objectives is more restrictive than all other numeric thresholds at 0.0056 mg/l Cadmium in the Sacramento River above Hamilton City. The CTR 1-hour average is 0.0057 mg/l, so the more restrictive Basic Pan limit is used.NOTE:For Chronic and Acute Cadmium, the Basin Plan , Table 3-1, Trace Element Water Quality Objectives is more restrictive than all other numeric thresholds at 0.00022 mg/l Cadmium in the Sacramento River above Hamilton City Water Quality
Objective or
Promulgated Criterion
Numeric Thresholds Recommended to Implement Objective or Criterion G=Groundwater IS=Inland SW
E=EB/Estuary
O=Ocean
Assessment Thresholds Recommended to Protect Designated Beneficial Uses in the Water Body Groundwater Inland Surface Waters
Bay or
Estuary
Ocean
Waters
Source of Numeric Threshold
(footnotes in parentheses are at bottom of table)
Numeric
Threshold Units
Aquatic Life
& Consump AGR
Aquatic Life
& Consump
Aquatic Life
& Consump
Water Quality-Based Assessment Thresholds
Derived using the Assessment Threshold Algorithms in the Water Quality Goals Staff Report, on the web at http://www.waterboards.ca.gov/water_issues/programs/water_quality_goals/docs/wq_goals_text.pd * * * Note: Compliance with numeric Water Quality Ojbectives from the applicable Water Quality Control Plans (Basin Plans) is also required. * * * MUNToxicity Constituent / Parameter MUN-MCL MUN- Toxicity AGR MUN-MCL

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Document Dated: Jan 4, 2017
Date Printed: 7/2/2020 Packet Pg. 758
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Appendix C-2
Sacramento River Water Quality Limits
CAS
(Synonym) Number
Water Quality
Objective or
Promulgated Criterion
Numeric Thresholds Recommended to Implement Objective or Criterion G=Groundwater IS=Inland SW
E=EB/Estuary
O=Ocean
Assessment Thresholds Recommended to Protect Designated Beneficial Uses in the Water Body Groundwater Inland Surface Waters
Bay or
Estuary
Ocean
Waters
Source of Numeric Threshold
(footnotes in parentheses are at bottom of table)
Numeric
Threshold Units
Aquatic Life
& Consump AGR
Aquatic Life
& Consump
Aquatic Life
& Consump
Water Quality-Based Assessment Thresholds
Derived using the Assessment Threshold Algorithms in the Water Quality Goals Staff Report, on the web at http://www.waterboards.ca.gov/water_issues/programs/water_quality_goals/docs/wq_goals_text.pd * * * Note: Compliance with numeric Water Quality Ojbectives from the applicable Water Quality Control Plans (Basin Plans) is also required. * * * MUNToxicity Constituent / Parameter MUN-MCL MUN- Toxicity AGR MUN-MCL Mercury Chemical Constituents California Primary MCL 2 ug/L G & IS X 7439-97-6 Toxicity - humans California Public Health Goal for Drinking Water 1.2 ug/L G XCTR - humans California Toxics Rule (USEPA) for sources of drinking water 0.05 ug/L IS X X X California Toxics Rule (USEPA) for other waters 0.051 ug/L IS & E X Toxicity - fw aquatic life USEPA National Recomm. WQ Criteria, 4-day avg, dissolved 0.77 ug/L IS USEPA National Recomm. WQ Criteria, 1-hour avg, dissolved 1.4 ug/L IS Toxicity - sw aquatic life USEPA National Recomm. WQ Criteria, 4-day avg, dissolved 0.94 ug/L E & O USEPA National Recomm. WQ Criteria, 1-hour avg, dissolved 1.8 ug/L E & O CA Ocean Plan - aq life Aquatic Life Protection Objective, 6-month median 0.04 ug/L O X Aquatic Life Protection Objective, daily maximum 0.16 ug/L O Aquatic Life Protection Objective, instantaneous max 0.4 ug/L O Molybdenum Chemical Constituents Water Quality for Agriculture (Ayers & Westcot) 10 ug/L G & IS X X 7439-98-7 Toxicity - humans USEPA IRIS Reference Dose (c) 35 ug/L G & IS X X X X Nickel Chemical Constituents California Primary MCL 100 ug/L G & IS X X X 7440-02-0 Water Quality for Agriculture (Ayers & Westcot) 200 ug/L G & IS X X Toxicity - humans California Public Health Goal for Drinking Water 12 ug/L G X USEPA National Recomm. WQ Criteria, fish consumption 4,600 ug/L IS & E & O CTR - humans California Toxics Rule (USEPA) for sources of drinking water 610 ug/L IS California Toxics Rule (USEPA) for other waters 4,600 ug/L IS & E CTR - fw aquatic life California Toxics Rule (USEPA), 4-day average, dissolved (l) 24 ug/L IS X California Toxics Rule (USEPA), 1-hour average, dissolved (l) 220 ug/L IS CTR - sw aquatic life California Toxics Rule (USEPA), 4-day average, dissolved 8 ug/L E X California Toxics Rule (USEPA), 1-hour average, dissolved 74 ug/L E CA Ocean Plan - aq life Aquatic Life Protection Objective, 6-month median 5 ug/L O X Aquatic Life Protection Objective, daily maximum 20 ug/L O Aquatic Life Protection Objective, instantaneous maximum 50 ug/L O Selenium Chemical Constituents California Primary MCL 50 ug/L G & IS X X 7782-49-2 Water Quality for Agriculture (Ayers & Westcot) 20 ug/L G & IS X X Toxicity - humans California Public Health Goal for Drinking Water 30 ug/L G & IS X X USEPA National Recomm. WQ Criteria, water & fish consump. 170 ug/L ISUSEPA National Recomm. WQ Criteria, fish consumption 4,200 ug/L E & O NTR - fw aquatic life National Toxics Rule (USEPA), 4-day average, total 5 ug/L IS X National Toxics Rule (USEPA), 1-hour average, total 20 ug/L IS CTR - sw aquatic life California Toxics Rule (USEPA), 4-day average, dissolved 71 ug/L E X California Toxics Rule (USEPA), 1-hour average, dissolved 290 ug/L E CA Ocean Plan - aq life Aquatic Life Protection Objective, 6-month median 15 ug/L O X Aquatic Life Protection Objective, daily maximum 60 ug/L O Aquatic Life Protection Objective, instantaneous maximum 150 ug/L O Silver Chemical Constituents California Secondary MCL 100 ug/L G & IS X X 7440-22-4 Tastes and Odors California Secondary MCL 100 ug/L G & ISToxicity - humans USEPA IRIS Reference Dose (c) 35 ug/L G & IS X XCTR - fw aquatic life California Toxics Rule (USEPA), 1-hour average, dissolved (l) 0.71 ug/L IS XCTR - sw aquatic life California Toxics Rule (USEPA), 1-hour average, dissolved 1.9 ug/L E X CA Ocean Plan - aq life Aquatic Life Protection Objective, 6-month median 0.7 ug/L O X Aquatic Life Protection Objective, daily maximum 2.8 ug/L O Aquatic Life Protection Objective, instantaneous maximum 7 ug/L O Zinc Chemical Constituents California Secondary MCL 5,000 ug/L G & IS X X 7440-66-6 Water Quality for Agriculture (Ayers & Westcot) 2,000 ug/L G & IS Tastes and Odors California Secondary MCL 5,000 ug/L G & ISToxicity - humans USEPA IRIS Reference Dose (c) 2,100 ug/L G & IS X X USEPA National Recomm. WQ Criteria, water & fish consump. 7,400 ug/L ISUSEPA National Recomm. WQ Criteria, fish consumption 26,000 ug/L E & O CTR - fw aquatic life California Toxics Rule (USEPA), 1-hour average, dissolved (l) 54 ug/L IS X California Toxics Rule (USEPA), 4-day average, dissolved (l) 54 ug/L IS Toxicity - sw aquatic life USEPA National Recomm. WQ Criteria, 4-day avg, dissolved 81 ug/L E & O X USEPA National Recomm. WQ Criteria, 1-hour avg, dissolved 90 ug/L E & O CA Ocean Plan - aq life Aquatic Life Protection Objective for Lead, 6-month median 20 ug/L O X Aquatic Life Protection Objective for Lead, daily maximum 80 ug/L O Aquatic Life Protection Objective for Lead, instantaneous max 200 ug/L O NOTE: For Zinc, the Basin Plan , Table 3-1, Trace Element Water Quality Objectives is more restrictive than all other numeric thresholds at 0.016 mg/l in the Sacramento River above Hamilton City.

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Document Dated: Jan 4, 2017
Date Printed: 7/2/2020 Packet Pg. 759
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Appendix C-2
Sacramento River Water Quality Limits
CAS
(Synonym) Number
Water Quality
Objective or
Promulgated Criterion
Numeric Thresholds Recommended to Implement Objective or Criterion G=Groundwater IS=Inland SW
E=EB/Estuary
O=Ocean
Assessment Thresholds Recommended to Protect Designated Beneficial Uses in the Water Body Groundwater Inland Surface Waters
Bay or
Estuary
Ocean
Waters
Source of Numeric Threshold
(footnotes in parentheses are at bottom of table)
Numeric
Threshold Units
Aquatic Life
& Consump AGR
Aquatic Life
& Consump
Aquatic Life
& Consump
Water Quality-Based Assessment Thresholds
Derived using the Assessment Threshold Algorithms in the Water Quality Goals Staff Report, on the web at http://www.waterboards.ca.gov/water_issues/programs/water_quality_goals/docs/wq_goals_text.pd * * * Note: Compliance with numeric Water Quality Ojbectives from the applicable Water Quality Control Plans (Basin Plans) is also required. * * * MUNToxicity Constituent / Parameter MUN-MCL MUN- Toxicity AGR MUN-MCL Notes:
(a) For surface waters, toxicity limits may be preempted by Calfornia Toxics Rule or National Toxics Rule criteria or by California Ocean Plan objectives.(b) Assumes 70 kg body weight and 2 liters per day drinking water consumption. (c) Assumes 70 kg body weight, 2 liters per day drinking water consumption, and 20 percent relative source contrubution. An additional undertainty factor of 10 is used for Class C carcinogens (d) Applies to “TCDD Equivalents” calculated from the concentrations of 2,3,7,8-chlorinated dibenzodioxins and 2,3,7,8-chlorinated dibenzofurans and their corresponding toxic equivalency factors (TEFs).(e) Applies separately to Aroclors 1242, 1254, 1221, 1232, 1248, 1260, and 1016. (f) USEPA, Region 9 has allowed acid soluble analysis in surface water samples to account for suspended clay partices, which pose little aluminum toxicity. (g)(h) In addition, the Average Primary Producer Steinhaus Similarity deviation for a site is less than 5% (as determined using Comprehensive Aquatic Systems Model (CASM) or other appropriate model and index) and is not exceeded more than once every three years (or other appropriate return frequency sufficient to allow system recovery). The 5% index for the protection of aquatic plant community should also be protective of most freshwater animals (chronic criterion). (i) Assumes pH 8.5, 27°C, and fish earlly life stages present.(j) Assumes pH 8.5 and salmonids present. (k) For estuarine waters, assumes maximum temperature of 25°C, maximum pH of 9.0 and minimum salinity of 20 g/kg. For ocean waters, assumes maximum temperature of 25°C, maximum pH of 8.5 and minimum salinity of 30 g/kg. (l) Assumes 40 mg/L hardness as CaCO3.
(m) For sum of DDD, DDE and DDT.
(n) For sum of carcinogenic PAHs.(o) Cancer risk at action level is 5 in 1,000,000.(p) For chlorinated phenolics.(q) Applies to total PCBs (e.g., sum of all congener or all isomer or homolog or Arochlor analyses). (r) Criterion appears in an older reference, but not in the current list of recommended criteria. (s) Value adjusted by rounding intermediate calculations per USEPA procedures. (t) Value adjusted by removing Gammarus fasciatus study results per recommendation of Finlayson, California Dept. of Fish and Game.

CTR California Toxics Rule
MFL Million fibers per liter; limited to fibers longer than 10 um.

NTR National Toxics Rule
fw freshwater
sw saltwater
tox toxicity
Beneficial Uses:

MUN-MCL = Municipal or Domestic Supply with default selection of drinking water Maximum Contaminant Level (MCL) when availableMUN-Toxicity = Municipal or Domestic Supply with consideration of human toxicity thresholds that are more stringent than drinking water MCLsAGR = Agricultural Water Uses, including irrigation supply and stock wateringAquatic Life & Consump = Supporting protection of aquatic life and consumption of aquatic organisms (assume consumption of both water and aquatic organisms in fresh waters) Where no numeric aquaric life protective criteria exist, 1/10 of the published toxic level for the most sensitive aquatic life species will be considered protective. For the most recent toxic levels see http://cfpub.epa.gov/ecotox/.Additional Notes by Tracy Wyhlidko, City of Redding: This Water Quality Goal document did not include the Trace Element Water Quality Objectives (Table 3-1) from the Basin Plan, May 2018 Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board, Cental Valley Region, Fifth Edition. I have included these references, where applicable, in the notes under the Constituent/Paramater column.

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Document Dated: Jan 4, 2017
Date Printed: 7/2/2020 Packet Pg. 760
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge

THE WATER QUALITY CONTROL PLAN (BASIN PLAN)

FOR THE

CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD

CENTRAL VALLEY REGION

FIFTH EDITION
Revised May 2018 (with Approved Amendments)

THE SACRAMENTO RIVER BASIN AND

THE SAN JOAQUIN RIVER BASIN

CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD

CENTRAL VALLEY REGION
Karl E. Longley, Chair
Denise Kadara, Vice-Chair
Jon Costantino, Member
Carmen L. Ramirez, Member
Robert (Bob) Schneider, Member
Raji Brar, Member
Daniel B. Marcum, Member
Pamela C. Creedon, Executive Officer
COVER PHOTO ACKNOWLEDGMENTS:

Rafting the American River: Rapid Shooters, Lotus CA Sunset Waterfowl: David Rosen/ Ducks Unlimited Yosemite: David Rosen/ Ducks Unlimited Sugar Beets: Brenda Grewell/ Dept. of Water Resource Appendix C-2
Sacramento River Water Quality Limits
Packet Pg. 761 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) WATER QUALITY OBJECTIVES 3-4 May 2018
64431-B (Fluoride) of Section 64431, Table 64444-A (Organic Chemicals) of Section 64444, and Tables 64449-A (Secondary Maximum Contaminant Levels-Consumer Acceptance Limits) and 64449-B (Secondary Maximum Contaminant Levels-Ranges) of Section 64449. This incorporation-by-reference is prospective, including future changes to the incorporated provisions as the changes take effect. At a minimum, water designated for use as domestic or municipal supply (MUN) shall not contain lead in excess of 0.015 mg/l. The Regional Water Board acknowledges that specific treatment requirements are imposed by state and federal drinking water regulations on the consumption of surface waters under specific circumstances.

To protect all beneficial uses the Regional Water Board may apply limits more stringent than MCLs.
*This includes drinking water chemical constituents of concern, such as organic carbon.

TABLE 3-1

TRACE ELEMENT WATER QUALITY OBJECTIVES
CONSTITUENT MAXIMUM CONCENTRATIONa
(mg/l)

APPLICABLE WATER BODIES
Arsenic 0.01 Sacramento River from Keswick Dam
to the I Street Bridge at City of
Sacramento (13, 30); American River
from Folsom Dam to the Sacramento
River (51); Folsom Lake (50); and the
Sacramento-San Joaquin Delta.

Barium 0.1 As noted above for Arsenic.

Boron 2.0 (15 March through 15
September)

0.8 (monthly mean, 15 March
through 15 September)

2.6 (16 September through 14
March)

1.0 (monthly mean, 16 September
through 14 March)

1.3 (monthly mean, critical yearb)
San Joaquin River, mouth of the
Merced River to Vernalis

5.8 2.0 (monthly mean, 15 March
through 15 September)
Salt Slough, Mud Slough (north), San
Joaquin River from Sack Dam to the
mouth of Merced River
Cadmium 0.00022 c Sacramento River and its tributaries
above State Hwy 32 bridge at Hamilton
City
Copper 0.0056 c As noted above for Cadmium.

0.01 d As noted above for Arsenic. d
Cyanide 0.01 As noted above for Arsenic.

Appendix C-2
Sacramento River Water Quality Limits
Packet Pg. 762 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) WATER QUALITY OBJECTIVES 3-5 May 2018
TABLE 3-1

TRACE ELEMENT WATER QUALITY OBJECTIVES
CONSTITUENT MAXIMUM CONCENTRATIONa
(mg/l)

APPLICABLE WATER BODIES
Iron 0.3 As noted above for Arsenic.

Manganese 0.05 As noted above for Arsenic.

Molybdenum 0.015

0.010 (monthly mean)
San Joaquin River, mouth of the
Merced River to Vernalis

0.050

0.019 (monthly mean)
Salt Slough, Mud Slough (north), San
Joaquin River from Sack Dam to the
mouth of Merced River
Selenium 0.012

0.005 (4-day average)
San Joaquin River, mouth of the
Merced River to Vernalis

0.020

0.005 (4-day average)
Mud Slough (north), and the San
Joaquin River from Sack Dam to the
mouth of Merced River

0.020

0.002 (monthly mean)
Salt Slough and constructed and reconstructed water supply channels in the Grassland watershed listed in
Appendix 40.

Silver 0.01 As noted above for Arsenic
Zinc 0.1 d As noted above for Arsenic. d

0.016 c As noted above for Cadmium.
a Metal objectives in this table are dissolved concentrations. Selenium, molybdenum, and boron objectives are total concentrations.
b See Table 4-3.
c The effects of these concentrations were measured by exposing test organisms to dissolved aqueous solutions of 40 mg/l hardness that had been filtered through a 0.45 micron membrane filter. Where deviations from 40 mg/l of water hardness occur, the objectives, in mg/l, shall be determined using the following formulas:

Cu = e (0.905) (ln hardness) - 1.612 x 10-3
Zn = e (0.830) (ln hardness) - 0.289 x 10-3
Cd = e (1.160) (ln hardness) - 5.777 x 10-3
d Does not apply to Sacramento River above State Hwy. 32 bridge at Hamilton City. See relevant objectives (c) above.

Appendix C-2
Sacramento River Water Quality Limits
Packet Pg. 763 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) APPENDIX D-1

CLEAR CREEK WWTP SLUDGE FLOW CALCULATIONS
Sludge Flow Calculator for CCWWTP
(tons sludge/year)(2000 lb/ton)(453.6 g/lb)(kg/1000 g)(L/1.08 kg sludge density)(gal/3.785 L)(year/365 day) = gallons/day sludge flow. = (tons sludge/year)(0.60682) = gallons/day sludge flow PercentSpecific Gravity kg/L
Calendar
Year
Tons
sludge/year
gallons/day sludge
flow
Million Gallons
(MG)/day sludge 10 1.03
2016 1472 895.01 0.000895 12.5 1.04
2017 983 597.68 0.000598 15 1.05
2018 1668 1014.18 0.001014 17.5 1.06
2019 1741 1058.56 0.001059 20 1.07
Average 0.000891 22.5 1.08
25 1.09

27.5 1.10
30 1.11
Detailed Calculations representing all the years of sludge centrifuge operation:
2016 1.08 kg/L x 3.785 L/gal = 4.0878 kg/gal

4.0878 kg/gal x 1000 g/kg = 4087.8 g/gal
4087.8 g/gal ÷ 453.6 g/lb = 9.0119048 lbs./gal
2000 lbs/ton ÷ 9.01190476 lbs./gal = 221.92867 gal/ton
1472
tons taken to
landfill in this
calendar year x 221.928666 gal/ton = 326679.0 gal/year to landfil

0.326678996 MG /year to land ÷ 365 day/yr = 0.00090 MG sludge/day 2017 1.08 kg/L x 3.785 L/gal = 4.0878 kg/gal

4.0878 kg/gal x 1000 g/kg = 4087.8 g/gal
4087.8 g/gal ÷ 453.6 g/lb = 9.0119048 lbs./gal
2000 lbs/ton ÷ 9.01190476 lbs./gal = 221.92867 gal/ton
983
tons taken to
landfill in this
calendar year x 221.928666 gal/ton = 218155.9 gal/year to landfil

0.218155878 MG /year to land ÷ 365 day/yr = 0.000598 MG sludge/day 2018 1.08 kg/L x 3.785 L/gal = 4.0878 kg/gal

4.0878 kg/gal x 1000 g/kg = 4087.8 g/gal
4087.8 g/gal ÷ 453.6 g/lb = 9.0119048 lbs./gal
2000 lbs/ton ÷ 9.01190476 lbs./gal = 221.92867 gal/ton
1668
tons taken to
landfill in this
calendar year x 221.928666 gal/ton = 370177.0 gal/year to landfil

0.370177015 MG /year to land ÷ 365 day/yr = 0.00101 MG sludge/day 2019 1.08 kg/L x 3.785 L/gal = 4.0878 kg/gal

4.0878 kg/gal x 1000 g/kg = 4087.8 g/gal
4087.8 g/gal ÷ 453.6 g/lb = 9.0119048 lbs./gal
2000 lbs/ton ÷ 9.01190476 lbs./gal = 221.92867 gal/ton
1741
tons taken to
landfill in this
calendar year x 221.928666 gal/ton = 386377.8 gal/year to landfil

0.386377807 MG /year to land ÷ 365 day/yr = 0.0010586 MG sludge/day Using the book estimated Specific Gravity for CCWWTP based on 22.1% solids use 1.08 kg/L for 2016-19 with the total tons disposed to landfill for the corresponding year in the green boxes below.

EPA Local Limits Development Guidance, July 2004,
Appendix S Specific Gravity of Sludge
S:\Industrial Waste\Local Limits\2020 Local Limits Update\Appendix D1 CC Sludge Flow Date Printed: 7/2/2020

Page 1 of 1 ends

APPENDIX D-2

STILLWATER WWTP SLUDGE FLOW CALCULATIONS
Sludge Flow Calculator for SWWTP
(tons sludge/year)(2000 lb/ton)(453.6 g/lb)(kg/1000 g)(L/1.05 kg sludge density)(gal/3.785 L)(year/365 day) = gallons/day sludge flow. = (tons sludge/year)(0.62539) = gallons/day sludge flow PercentSpecific Gravity kg/L
Calendar
Year
Tons
sludge/year
gallons/day sludge
flow
Million Gallons
(MG)/day sludge 10 1.03
2014 2104 1315.82 0.001316 12.5 1.04
2015 2276 1423.39 0.001423 15 1.05
2016 2613 1634.14 0.001634 17.5 1.06
2017 2991 1870.54 0.001871 20 1.07
2018 2298 1437.15 0.001437 22.5 1.08
2019 2515 1572.86 0.001573 25 1.09
Average 0.001542 27.5 1.10
30 1.11
Detailed Calculations:
2014 1.05 kg/L x 3.785 L/gal = 3.97425 kg/gal

3.97425 kg/gal x 1000 g/kg = 3974.25 g/gal
3974.25 g/gal ÷ 453.6 g/lb = 8.762 lbs/gal
2000 lbs/ton ÷ 8.7615741 lbs/gal = 228.26948 gal/ton
2104
tons taken to
landfill in this
calendar year x 228.26948 gal/ton = 480279.0 gal/year to landfi 480279.0 gal/year to landf ÷ 365 days/year= 1315.833 gal/day 1315.8 gal/day ÷ 10000000 gal/MG = 0.000132 MG sludge/day 2015 1.05 kg/L x 3.785 L/gal = 3.97425 kg/gal

3.97425 kg/gal x 1000 g/kg = 3974.25 g/gal
3974.25 g/gal ÷ 453.6 g/lb = 8.7615741 lbs./gal
2000 lbs/ton ÷ 8.7615741 lbs./gal = 228.26948 gal/ton
2276
tons taken to
landfill in this
calendar year x 228.26948 gal/ton = 519541.3 gal/year to landfi

0.519541347 MG /year to land ÷ 365 day/yr = 0.0014234 MG sludge/day 2016 1.05 kg/L x 3.785 L/gal = 3.97425 kg/gal

3.97425 kg/gal x 1000 g/kg = 3974.25 g/gal
3974.25 g/gal ÷ 453.6 g/lb = 8.7615741 lbs./gal
2000 lbs/ton ÷ 8.7615741 lbs./gal = 228.26948 gal/ton
2613
tons taken to
landfill in this
calendar year x 228.26948 gal/ton = 596468.2 gal/year to landfi

0.596468164 MG /year to land ÷ 365 day/yr = 0.00163 MG sludge/day 2017 1.05 kg/L x 3.785 L/gal = 3.97425 kg/gal

3.97425 kg/gal x 1000 g/kg = 3974.25 g/gal
3974.25 g/gal ÷ 453.6 g/lb = 8.7615741 lbs./gal
2000 lbs/ton ÷ 8.7615741 lbs./gal = 228.26948 gal/ton
2991
tons taken to
landfill in this
calendar year x 228.26948 gal/ton = 682754.0 gal/year to landfi

0.682754029 MG /year to land ÷ 365 day/yr = 0.0018706 MG sludge/day 2018 1.05 kg/L x 3.785 L/gal = 3.97425 kg/gal

3.97425 kg/gal x 1000 g/kg = 3974.25 g/gal
3974.25 g/gal ÷ 453.6 g/lb = 8.7615741 lbs./gal
2000 lbs/ton ÷ 8.7615741 lbs./gal = 228.26948 gal/ton
2298
tons taken to
landfill in this
calendar year x 228.26948 gal/ton = 524563.3 gal/year to landfi

0.524563276 MG /year to land ÷ 365 day/yr = 0.0014372 MG sludge/day 2019 1.05 kg/L x 3.785 L/gal = 3.97425 kg/gal

3.97425 kg/gal x 1000 g/kg = 3974.25 g/gal
3974.25 g/gal ÷ 453.6 g/lb = 8.7615741 lbs./gal
2000 lbs/ton ÷ 8.7615741 lbs./gal = 228.26948 gal/ton
2515
tons taken to
landfill in this
calendar year x 228.26948 gal/ton = 574097.8 gal/year to landfi

0.574097754 MG /year to land ÷ 365 day/yr = 0.0015729 MG sludge/day Using the book estimated Specific Gravity for SWWWTP based on 14% solids use 1.05 kg/L for 2014-18 with the total tons disposed to landfill for the corresponding year in the green boxes below.

EPA Local Limits Development Guidance, July
2004, Appendix S Specific Gravity of Sludge
S:\Industrial Waste\Local Limits\2020 Local Limits Update\Appendix D2 SW Sludge Flow Date Printed: 7/2/2020
Packet Pg. 765 Page 1 of 1 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) Appendix D-3
State and Federal Sludge Hazardous Waste Regulations
~
---.

Inorganic Parameters/Metals (Methods: EPA 60108, 7000
eries) TCLP
TTLCa STLC TCLP Com ound mg/I
Parameters mg/kg mg/I mg/I ,4-Dichlorophenoxyacetic acid 10.0 ntimony 500 15 ,4,5-TP Silvex 1.0
rsenic 500 5.0 5.0 rganochlorine Pesticides/ PC8s (Method: EPA 8081A) Barium 10,ooob 100 100 ldrin 1.4 0.14
Beryllium 75 0.75 Chlordane 2.5 0.25 0.03
Cadmium 100 1.0 1.0 DDT/DOE/DOD 1.0 0.1
Chromium 2,500 I 5 (560) 5 Dieldrin 8.0 0.8
Cobalt 8,000 80 Endrin 0.2 0.02 0.02
Copper 2,500 25 Heptachlor (& its Epoxide) 4.7 0.47 0.008 Lead 1,000 5.0 5.0 Kepone 21 2.1
Mercury 20 0.2 0.2 Lindane 4.0 0.4 0.4
Molybdenum 3,500 350 Methoxychlor 100 10 10.0
Nickel 2,000 20 Mirex 21 2.1
Selenium 100 1.0 1.0 oxa hene 5.0 0.5 0.5
ilver 500 5 5 emi-Volatiles (Method: EPA 8270C)
hallium 700 7.0 o-Cresol 200.0
anadium 2,400 24 m-Cresol 200.0
inc 5,000 250 p-Cresol 200.0
Chromium (VI) 500 5 Cresols (Total) 200.0
Fluoride Salts 18,000 180 ,4-Dinitrotoluene 0.13
sbestos 1% Hexachlorobenzene 0.13
olatiles (Method: EPA 82608) Hexachlorobutadiene 0.5
Benzene 0.5 Hexachloroethane 3.0
Carbon tetrachloride 0.5 Nitrobenzene 2.0
Chlorobenzene 100.0 Pentachlorophenol 17 1.7 100.0
Chloroform 6.0 Pyridine 5.0
1,4-Dichlorobenzene 7.5 ,4,5-Trichlorophenol 400.0
1,2-Dichloroethane 0.5 ,4,6-Trichlorophenol 2.0
1, 1-Dichloroethylene 0.7 Miscellaneous (Methods: EPA 8280*, CADHS-LUFT/7420**) Methyl ethyl ketone (MEK) 200.0 Dioxin (2,3,7,8-TCDD)* 0.01 0.001 etrachloroethylene (PCE) 0.7 Organic Lead Compounds** 13 richloroethylene (TCE) 2,040 204 0.5 See Sec. 22-66261.27.(a)(7) for Additional Toxicity inyl chloride 0.2 Compound/Criteria.

Values expressed as wet wei ht b Excludin barium sulfate itle (26) 22 Toxicity Criteria Section 22-66261.24 lgnitabifity
(40 CFR 261.21)
(T22: 22-66261.21)
Corrosivity
(40 CFR 261.22)
(T22: 22-66261.22)
eactivity
(40 CFR 261.22)
(722:22-66261.23)
bacJ~ top
~·=1~;~~rdosJs,
Matrix Method Criteria
Exhibits the characteristic of ignitability: if it is a liquid, and has a flash point < 60°C Liquid ASTM 0-93 (140°F). Aqueous solutions containing> 24% alcohol by volume are considered ignitable and do not require flash point testing.

Solid
EPA 9040
Liquid EPA 1110,
NACE
Solid EPA 9045
SW846,
Chapter 7
Sec.7.3.3.

Exhibits the characteristic of ignitability: if it is not a liquid and is capable, under standard temperature and pressure, of causing fire through friction, absorption of moisture or spontaneous chemical changes and, when ignited, burns so vigorously and ersistentl that it creates a hazard.

Exhibits the characteristic of corrosivity if it is aqueous and has a pH = 2 or = 12.5 (Sec 260.20 and 260.21) if it corrodes steel (SAE 1020) at rate >6.35 mm or 0.250 in. per year at a test temperature of 55°C (130°F)
If it is not aqueous and, when mixed with an equivalent weight of water, produces a solution havin a pH = 2 or = 12.5
Exhibits the characteristic of reactivity: if the waste has any of the following properties:

1. It is normally unstable and readily undergoes violent change without detonating.

2. It reacts violently with water.

3. It forms potentially explosive mixtures with water.

4. When mixed with water, it generates toxic gases, vapors, or fumes in a quantity sufficient to present a danger to human health or environment.

5. It is a cyanide or sulfide bearing waste which, when exposed to pH conditions between 2 and 12.5 can generate toxic gases, vapors or fumes in a quantity sufficient to present a danger to human health or the environment.

The current EPA guidance level is: Total releasable cyanide: 250 mg HCN/kg waste.

The current EPA guidance level is: Total releasable sulfide: 500 mg H2S/kg waste.

6. It is readily capable of detonation or explosive reaction if it is a subjected to a strong initiating source of if it is heated under confinement.

7. It is readily capable of detonation or explosive decomposition or reaction at standard temperature and pressure.

8. It is a forbidden explosive, as defined in 49 CFR 173.51 or a class A or B explosive, as defined in 49 CFR 173.53 and 173.88.

TOXICITY Fish {Title 26 sec 66261.24(6)} SMWW 18th Ed. A waste, or material is toxic and hazardous if (6) has an acute aquatic 96-Hour LC50 ess than 500 mb/L. Packet Pg. 766 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) Appendix D-3
State and Federal Sludge Hazardous Waste Regulations
-!~.24~-~_;_ __ ____,__!B::!:!AR.:::::C:!::LA::!YS~..:C::!A:!!:L::!IF~O:;:;RNIA~~C~O::::D::::iE~O~F..:REG=:.::UL:::::::.:ATl::.::::O::..N:::.S ________ Ti_tle_l_l w~doav . ~~~s. Waste
Nratther Contaminant
fl 0004
D005
f D018
f< 0006
P D019
p 0020
~ D021
p~
0023
D024
0025
D026
D016
.f 0027
p 0028
p D029
,f 0030
·r 0012
t' D031
f' D032
p 0033
p D034
I' D008
r D013
p D009
D014
D035
f~ D036 ,- D037
D038
~)
,--._•·e
p·
f D010
I-' D011
D039
D015
D040
0041
p 0042
-c- Arsenic __ ,,,_ Barium
Ben=e .
_., · =ttadlJoride ,;_;,;.. f
Cluordane (;of)
Otlorobem.ene t::;.2,y
Cblorofmn r;;,; ~ (Zbromium / . o-Ctesol :Z /iJ,' ·, ,,j/-. rn-Cresol ~· ·· "'
p-Cresol ,,:, ·· -'
Cresol ' _.. 2,4-D ef!1 'S
1,4--Dich.Iorobenzcne]' ,;; :.Ls-·
1,2-DichJoroethane ,. .
1,t-DichJoroethylene ;;;:;JA
2,4-Dinittotohtene r,; .2-:s;-
Endrin Ce\'-1
Heptach.lor (and iis epoxide) Cr·,l{
Hexachlorobemene ·7 ,·"' -·- Hexachlorobutadiene ,; '-"· -~- .-::, Hexachloroethane _ _.,/
,...Lead ~- Lindane 0.0 {1 .
.,- MerQU"Y , • '"' Methox}'clllor ,~ q_:;
Methyl ethyl ketone c.:.;;;.4
Nitrobemene G;2~-
PentachJoropbenol 6 )...5'
Pyridine ~~ Selenium
~" Silver { Tettachloroethylene {: ;;.: ·
Toxaphene i:r.,e
'lnchloroethylene C ;.!,
2,4.S-TricbJocq,henol ·2c,-,,·-

2.4,6-Tricb1ocophenol _J ..t.""
+Jll.J.~~d
Chemical
Abstract&
Service
Number
""t""CL.P
Regulatory
Level
Mgll
7440-38-2
744~39-3
71-43-2
7~3-9
56-23-5
57-74-9
108-90-7
67-66-3
7~7-3 95-48-7 ,._;,,;·
108-39-4
106-44-S {' . .' _.-
v.-&·

5.0 100.0

0.5 1.0

0.5 0.03
100.0
6,0
s.o
200.01
200.01
200.01
200.01

10.0 7.5
o.s

0.7 0.13

0.02 0.008

0.13 0.5

3.0 5.0

0.4 0.2

10.0 200.0

2.0 100.0
s.02

1.0 5.0

0.7 0.5

0.5 snc TILC
Wtt-Weight
Sllhstance"•" mgll mg/kg
M~ and/or mercury compounds 0.2 20
Mo enum and/oc molybdenum compounds 350 3,500"
Nickel and/or nickel compounds 20 2,000
Selenium and/oc selenium compounds 1.0 100
Silver andloc silver compounds 5 500
Thallium and/oc thallium compounds 7.0 700
Vanadium and/oc vanadiwn compounds 24 2,400
z,c and/oc zinc compounds 250 5,000
•sn.c and TlLC vahtes are calculated.on the concentrations of the elements, not the canpounds.
bJn the case of asbestos and elementalmetaJs, the specified concen11:ation limits apply only if the substances Bie in a iiiable, powdered or finely divided state.

Asbestos includes chrysotile, amosite, crocidolite, ttemolite, andtophyllite, and actinolite.
"Excluding barium &Ulfate.
4If the soluble cbromiWn, as detennined by the TCLP set forth in Appendix I of chapter 18 of this division, is leas than 5 m&'l, and the sohtble chromium, as determined by the procedures set forth in Appendix ll of ch.apter 11, equals «exceeds 560 mg/I and the waste is not otherwise identified as a RCRA hazardous wa_ste pursuant to section 66261.100, then lhe waste is a non-RCRA hazardous waste~-........__ .

C£xcludmg-molybdenunt diswlite.
(B) Table ID-List of Organic Persistent and Bioaccumulative Toxic Substances and Their Soluble Threshold Limit Concentration (S1LC) and Total Threshold Limit Concentration (TILC) Values:

Substance
Aldrin ,oB . Cbla:dane ti o.g
DDT,DDE,DDD (.of; .\
STLC
mg/1

0.14 0.25

0.1 10
TrLC
Wet Weight
mg/kg

1.4 2.5

1.0 100

8.0 •
p
D017
0043
2,4.S-TP
Vinyl chloride
(Silvex)
G.;;..
~Qi-:;,-
<i •
94-75-7
106-46--7
'107--06-2
75-35-4
121-14-2
72-20-S
76-44-8
118-74-1
87-68-3
67-72-1
7439-92-1
58-89-9
7439-97-6
72-43-5
78-93-3
98-95-3
87-86-5
11~1
7782-49-2
7~22-4
127-18-4
8001-35-2
79-01-6
95--95-4
88--06-2
93-72-1
75-01-4
400.0

2.0 1.0

0.2 2,4-Dichla:ophenoxyacetic acJ,:i,_,4,.1 8,,"
Dieldrin <o 6 8 =(2t-~TCDD) 0.8

0.001

0.02 0,47

2.1 0.01 :::::z:. I01Q.X)

0.2 1 If o--, m- and p-Cresol concenuations cannot be diflerentiated, the total eresol (0026) concentration is used. The regulatory level of total cresol is 200 mg/l 2 Quantitatim limit is greater lhan the calculatedregiµa.tory leveL The quantitatioo limit therefore becomes the regulatory level (2) it contains a substance listed in subsections (a)(2)(A) or (a)(2)(B) of this section at a coocentration in milligrams per liter of waste extract, as determined using the Waste Extraction Test (WE1) descnbed in Appendix.II of this chapter, whicbequalsorexceedsitslistedsolublethreshold limit concentration or at a concentration in milligrams per kilogram in the waste wb~ch equals or exceeds its listed total threshold limit concentration; (A) Table IT - List of Jn.(.,"fganic Persistent and Bioaccumulative Toxic Substances and Their Soluble Threshold Limit Concentration:
(S'ILC) and Total Threshold Limit Concentration (TILC) Values.

Substance"•"
Antim~y and/or antimony compounds
Arsenic and/or arsenic CXllllpOUDds
Asbestos
STLC
mgll
15 s.o
TrLC
Wet-Weight
mg/kg
500
500

1.0 (as percent)
Heptachloc~ ~- Kepone ,::_, . · , . · · Lead compounds, organic Lindane ~~8 0,4
Melhoxychlor r., 08 10
Mirex 1{ · · 2.1
Pentachlorophenol i '2..!) 1.7
Polychlorinated bimienyls (PCBs), 0 8 5.0
Toxaphene • 0 8 . 0.5
Trichlocoethylene ~ 2-¥ 204
2,4,5-Trichlorophenoxypropionic acid '-i'+F"rb- J-0
, • r- S"iwex_.

4.7 21
13 4.0
100
21 17
50 5
2,040
10 (3) it has an acute oral LDso less than 5,000 milligrams per kilogram; ( 4) it has an acute dermal LD50 less than 4,300 milligrams per kilogram; (S) it bas an acute inbalatico. LCso less than 10.000 parts per million as a gas or vapor,
(6) it has an acute aquatic 96-hour LCso less than 500 milligrams per liter when measured in soft water (total hardness 40 to 48 milligrams per liter of calcium. carbonate) with fathead minnows (Pi:/Mphales promelas), rainbow trout (Sa/mo gairdnen) or goJden shiners (!{otem.igonus crysoleucas) according to procedures descnbed in Part 800 of the "Standard Methods for the Examination of Water and Wastewater (16th Edition)," American Public Health Association. 198S and "Static Acote ~ Bioassay Procedures for Ha7.ardons Waste Samples,"Califomia Depart- and/or barium a>mpounds (excluding barite)
Bery~um and/or becyllium compounds
Cadmium and/a: cadmium compounds
On-omiwn (VI) compounds
100

0.75 1.0
5 10,000" mentofFish and Game, Water Pollution ControlLabora~, revised No- i~ vember 1988 (incorporated by reference, see sectim 66260.1 l ), or by Oiromium anti/or chromium (Ill) ccmpounds
Cobalt and/or cobalt canpounds
Copper and/or copper =mds Fluoride salts ---..---·
Lead and/or lead compoonds
s4
80 25
180
s.o
!- -.. • .._ • ~ •-- t I _ __,J,. • -~'> -~
500 other test methods or test fish approved by the Department, using test 2,500 samples prepared or meeting the cco.ditions for testing as prescribed in ~~ subdivisions ( c) and (d) of Appendix Il of this chapter, and solubili7.ed, 1&,000 suspended, dispersed or emulsified by the cited procedures or by other 1,000 methods approved by the Department; .
1?.trJ..I ,(_,'FL c · /J;J c. >Z .'./. , ' Page656 Register 94, Nos.~ 2-11-94 I..,
Packet Pg. 767 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits)

ELECTRONIC CODE OF FEDERAL REGULATIONS
e-CFR data is current as of June 30, 2020
Title 40 → Chapter I → Subchapter O → Part 503
Title 40: Protection of Environment
PART 503—STANDARDS FOR THE USE OR DISPOSAL OF SEWAGE SLUDGE Contents
Subpart A—General Provisions
§503.1 Purpose and applicability.
§503.2 Compliance period.
§503.3 Permits and direct enforceability.
§503.4 Relationship to other regulations.
§503.5 Additional or more stringent requirements.
§503.6 Exclusions.
§503.7 Requirement for a person who prepares sewage sludge. §503.8 Sampling and analysis.
§503.9 General definitions.

Subpart B—Land Application
§503.10 Applicability.
§503.11 Special definitions.
§503.12 General requirements.
§503.13 Pollutant limits.
§503.14 Management practices.
§503.15 Operational standards—pathogens and vector attraction reduction. §503.16 Frequency of monitoring.
§503.17 Recordkeeping.
§503.18 Reporting.

Subpart C—Surface Disposal
§503.20 Applicability.
§503.21 Special definitions.
§503.22 General requirements.
§503.23 Pollutant limits (other than domestic septage). §503.24 Management practices.
§503.25 Operational standards—pathogens and vector attraction reduction. §503.26 Frequency of monitoring.

Appendix D-4 EPA 503 Federal Sludge Land Application Standards Packet Pg. 768 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) (2) The name, address, telephone number, and National Pollutant Discharge Elimination System permit number (if appropriate) of the person who will apply the bulk sewage sludge.

Back to Top
§503.13 Pollutant limits.
(a) Sewage sludge. (1) Bulk sewage sludge or sewage sludge sold or given away in a bag or other container shall not be applied to the land if the concentration of any pollutant in the sewage sludge exceeds the ceiling concentration for the pollutant in Table 1 of §503.13. (2) If bulk sewage sludge is applied to agricultural land, forest, a public contact site, or a reclamation site, either:
(i) The cumulative loading rate for each pollutant shall not exceed the cumulative pollutant loading rate for the pollutant in Table 2 of §503.13; or (ii) The concentration of each pollutant in the sewage sludge shall not exceed the concentration for the pollutant in Table 3 of §503.13.
(3) If bulk sewage sludge is applied to a lawn or a home garden, the concentration of each pollutant in the sewage sludge shall not exceed the concentration for the pollutant in Table 3 of §503.13.
(4) If sewage sludge is sold or given away in a bag or other container for application to the land, either:
(i) The concentration of each pollutant in the sewage sludge shall not exceed the concentration for the pollutant in Table 3 of §503.13; or (ii) The product of the concentration of each pollutant in the sewage sludge and the annual whole sludge application rate for the sewage sludge shall not cause the annual pollutant loading rate for the pollutant in Table 4 of §503.13 to be exceeded. The procedure used to determine the annual whole sludge application rate is presented in appendix A of this part.
(b) Pollutant concentrations and loading rates—sewage sludge—(1) Ceiling concentrations.

T 1 §503.13—C C
Pollutant Ceiling concentration (milligrams per kilogram)1 Arsenic 75
Cadmium 85
Copper 4300
Lead 840
Mercury 57
Molybdenum 75
Nickel 420
Selenium 100
Appendix D-4 EPA 503 Federal Sludge Land Application Standards t
Packet Pg. 769 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) Zinc 7500
1Dry weight basis.
(2) Cumulative pollutant loading rates.

T 2 §503.13—C P L R
Pollutant Cumulative pollutant loading rate (kilograms per hectare) Arsenic 41
Cadmium 39
Copper 1500
Lead 300
Mercury 17
Nickel 420
Selenium 100
Zinc 2800
(3) Pollutant concentrations.

T 3 §503.13—P C
Pollutant Monthly average concentration (milligrams per kilogram)1 Arsenic 41
Cadmium 39
Copper 1500
Lead 300
Mercury 17
Nickel 420
Selenium 100
Zinc 2800
1Dry weight basis.
(4) Annual pollutant loading rates.

T 4 §503.13—A P L R
Pollutant Annual pollutant loading rate (kilograms per hectare per 365 day period) Arsenic 2.0
Cadmium 1.9
Copper 75
Lead 15
Mercury 0.85
Nickel 21
Selenium 5.0
Zinc 140
(c) Domestic septage. The annual application rate for domestic septage applied to agricultural land, forest, or a reclamation site shall not exceed the annual application rate calculated using equation (1).

Appendix D-4 EPA 503 Federal Sludge Land Application Standards Packet Pg. 770 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) View or download PDF
Where:

AAR = Annual application rate in gallons per acre per 365 day period.

N = Amount of nitrogen in pounds per acre per 365 day period needed by the crop or vegetation grown on the land.
[58 FR 9387, Feb. 19, 1993, as amended at 58 FR 9099, Feb. 25, 1994; 60 FR 54769, Oct. 25, 1995]
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§503.14 Management practices.
(a) Bulk sewage sludge shall not be applied to the land if it is likely to adversely affect a threatened or endangered species listed under section 4 of the Endangered Species Act or its designated critical habitat.
(b) Bulk sewage sludge shall not be applied to agricultural land, forest, a public contact site, or a reclamation site that is flooded, frozen, or snow-covered so that the bulk sewage sludge enters a wetland or other waters of the United States, as defined in 40 CFR 122.2, except as provided in a permit issued pursuant to section 402 or 404 of the CWA. (c) Bulk sewage sludge shall not be applied to agricultural land, forest, or a reclamation site that is 10 meters or less from waters of the United States, as defined in 40 CFR 122.2, unless otherwise specified by the permitting authority. (d) Bulk sewage sludge shall be applied to agricultural land, forest, a public contact site, or a reclamation site at a whole sludge application rate that is equal to or less than the agronomic rate for the bulk sewage sludge, unless, in the case of a reclamation site, otherwise specified by the permitting authority.
(e) Either a label shall be affixed to the bag or other container in which sewage sludge that is sold or given away for application to the land, or an information sheet shall be provided to the person who receives sewage sludge sold or given away in an other container for application to the land. The label or information sheet shall contain the following information:
(1) The name and address of the person who prepared the sewage sludge that is sold or given away in a bag or other container for application to the land. (2) A statement that application of the sewage sludge to the land is prohibited except in accordance with the instructions on the label or information sheet. (3) The annual whole sludge application rate for the sewage sludge that does not cause any of the annual pollutant loading rates in Table 4 of §503.13 to be exceeded.

Appendix D-4 EPA 503 Federal Sludge Land Application Standards .AAR= N 0. 0026 Eq. (1)
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Packet Pg. 771 Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge Limits) APPENDIX E-1
DOMESTIC COMMERCIAL SAMPLING DATA: CLEAR CREEK WWTP'S COLLECTION SYSTEM City of Redding ND = LESS THAN MDL J = BETWEEN RL (REPORTING LEVEL) AND MDL (METHOD DETECTION LIMIT) Domestic sampling data: Clear Creek WWTP's collection system Non-Detect data listed as 1/2 the MDL.

FULL DATA SET SHOWN,

REVISED DATA SET USED

FOR LOCAL LIMITS
Date Arsenic µg/L Cadmium µg/L Chromium µg/L Copper µg/L Lead µg/L Mercury µg/L Molybdenum µg/L Nickel µg/L count 11 24 10 23 24 4 24 19 0 24 0 5 24 18 21 24 2 11 24 9 1 24 14min all data used 0.48 0.125 0.325 12 0.175 0.03 0.025 1max all data used 9.70 6.09 4.77 166 2.35 1.98 10.2 8.81avg all data used 2.02 0.465 1.29 58.53 0.917 0.164 1.898 3.015std dev all data used 2.26 1.200 0.85 42.55 0.517 0.394 2.598 1.447avg+2std all data used 6.53 2.87 2.98 143.63 1.95 0.951 7.095 5.91avg-2std all data used -2.50 -1.93 -0.41 -26.56 -0.12 -0.624 -3.299 0.12 Location Date Arsenic µg/L Cadmium µg/L Chromium µg/L Copper µg/L Lead µg/L Mercury µg/L Molybdenum µg/L Nickel µg/L CC4 07/27/17 1.40 J ND 0.125 1.50 J 41.6 0.50 J 0.025 J 0.60 J 2.80CC4 10/10/17 ND 1.00 ND 0.25 2.00 J 40.2 1.20 J ND 0.025 ND 0.50 2.60 JCC4 03/14/18 ND 1.00 ND 0.25 1.00 J 30.4 ND 0.50 ND 0.025 1.50 J 2.70 JCC4 05/31/18 1.63 J ND 0.20 1.62 J 29.8 0.68 J ND 0.025 1.00 J 2.23 JCC5 07/27/17 1.60 J ND 0.125 1.10 J 27.0 ND 0.25 ND 0.025 ND 0.025 2.90CC5 10/10/17 ND 1.00 ND 0.25 1.10 J 26.2 ND 0.50 ND 0.025 ND 0.50 3.20 JCC5 03/14/18 ND 1.00 ND 0.25 1.20 J 15.3 ND 0.50 ND 0.025 ND 0.50 2.80 JCC5 05/31/18 1.22 J ND 0.20 0.80 J 12.0 ND 0.175 ND 0.025 ND 0.475 2.36 JCC6 07/27/17 6.10 J ND 0.125 1.40 J 126.0 0.90 J ND 0.025 1.70 J 2.40 JCC6 10/10/17 5.40 ND 0.25 ND 0.50 131.0 2.00 J ND 0.025 1.40 J ND 1.00CC6 03/14/18 9.70 ND 0.25 1.10 J 95.5 1.00 J ND 0.025 1.90 J 2.40 JCC6 05/31/18 2.36 J ND 0.20 1.09 J 70.2 0.77 J ND 0.025 0.97 J 2.26 JCC7 09/26/18 1.63 J 6.09 1.10 J 84.3 0.95 J 0.170 J 7.02 3.56CC7 11/28/18 2.13 J ND 0.40 ND 0.65 79.8 0.88 J ND 0.180 6.01 3.69 JCC7 03/21/19 4.83 ND 0.20 1.32 J 98.2 1.08 J ND 0.175 5.84 2.87 JCC7 06/12/19 1.37 J ND 0.20 2.02 J 107.0 2.35 J ND 0.175 10.2 4.20CC8 09/26/18 ND 0.475 ND 0.20 0.86 J 35.9 0.64 J ND 0.035 ND 0.475 2.72CC8 11/28/18 ND 0.950 ND 0.40 ND 0.65 42.6 1.13 1.980 ND 0.95 2.95CC8 03/21/19 ND 0.475 ND 0.20 1.09 J 35.5 0.94 J ND 0.175 1.07 J 2.19 JCC8 06/12/19 ND 0.475 ND 0.20 ND 0.325 25.0 0.46 J ND 0.175 ND 0.475 1.71 JCC9 09/26/18 ND 0.475 ND 0.20 1.32 J 166.0 1.19 J ND 0.035 ND 0.475 4.56CC9 11/28/18 ND 0.475 ND 0.20 0.97 J 24.4 0.64 J ND 0.175 1.02 J 3.24CC9 03/21/19 ND 0.475 ND 0.20 1.37 J 19.0 1.15 J ND 0.175 ND 0.475 2.22 JCC9 06/12/19 1.26 J ND 0.20 4.77 41.9 1.62 J ND 0.175 ND 0.475 8.81 Statistical Data Outlier Evlauation Arsenic µg/L Cadmium µg/L Chromium µg/L Copper µg/L Lead µg/L Mercury µg/L Molybdenum µg/L Nickel µg/L1st quartile 0.83 0.20 0.94 26.80 0.50 0.03 0.48 2.343rd quartile 1.76 0.25 1.38 87.10 1.14 0.18 1.55 3.213rdQ-1stQ, interquartile(IQ) range 0.92 0.05 0.44 60.30 0.64 0.15 1.08 0.88data lower limit = 1stQ-1.5x IQ range -0.55 0.1250 0.29 -63.65 -0.45 -0.20 -1.14 1.02data upper limit = 3rdQ+1.5 x IQ range 3.14 0.3250 2.03 177.55 2.09 0.40 3.16 4.52 µg/L
S:\Industrial Waste\Local Limits\2020 Local Limits Update\Appendix E 2020 Domestic and Commercial Data 2017-2019 7/2/2020
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Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX E-1
DOMESTIC COMMERCIAL SAMPLING DATA: CLEAR CREEK WWTP'S COLLECTION SYSTEM City of Redding
Domestic samplin
Non-Detect data listed as 1/2 the MDL.

FULL DATA SET SHOWN,

REVISED DATA SET USED

FOR LOCAL LIMITS
Date
countmin all data usedmax all data usedavg all data usedstd dev all data usedavg+2std all data usedavg-2std all data used Location Date
CC4 07/27/17CC4 10/10/17CC4 03/14/18CC4 05/31/18CC5 07/27/17CC5 10/10/17CC5 03/14/18CC5 05/31/18CC6 07/27/17CC6 10/10/17CC6 03/14/18CC6 05/31/18CC7 09/26/18CC7 11/28/18CC7 03/21/19CC7 06/12/19CC8 09/26/18CC8 11/28/18CC8 03/21/19CC8 06/12/19CC9 09/26/18CC9 11/28/18CC9 03/21/19CC9 06/12/19 Statistical Data Outlier Evlauation1st quartile3rd quartile3rdQ-1stQ, interquartile(IQ) rangedata lower limit = 1stQ-1.5x IQ rangedata upper limit = 3rdQ+1.5 x IQ range Ammonia Field Field
Selenium µg/L Silver µg/L Zinc µg/L O&G mg/L TDS mg/L BOD mg/L COD mg/L TSS mg/L NH3 mg/L pH EC µs/cm 24 24 17 24 3 0 24 0 23 24 24 24 24 24 24 24

0.75 0.1 41.2 10 160 65 122 37 9.46 6.65 187
2 1.2 149 58 844 440 961 290 50 9.47 1066

1.156 0.285 102.0 28.7 361.8 217.8 502.8 126.5 24.9 - 482.80.541 0.345 32.1 14.2 185.1 95.7 217.4 64.9 11.0 - 230.22.238 0.9744 166.2 57.0 732.0 409.2 937.6 256.3 46.9 - 943.10.075 -0.4048 37.8 0.4 -8.5 26.3 67.9 -3.4 2.9 - 22.4 Ammonia pH EC
Selenium µg/L Silver µg/L Zinc µg/L O&G mg/L TDS mg/L BOD mg/L COD mg/L TSS mg/L NH3 mg/L pH EC µs/cm ND 1.0 0.25 J 93.1 41 209 198 405 62.3 33.2 7.34 429ND 2.0 ND 0.25 112 34.9 519 231 515 77 47.1 7.79 592ND 2.0 ND 0.125 101 38 269 186 415 70 30.8 7.67 457ND 0.75 ND 0.10 131 48.0 325 331 569 121 38.0 7.25 415ND 1.0 ND 0.125 49.3 14.5 218 79 197 52.4 11.5 7.24 301ND 2.0 ND 0.25 73.4 34.6 410 92 209 58 13.9 6.76 384ND 2.0 ND 0.125 59.6 9.8 182 75 348 57 9.46 7.58 581ND 0.75 ND 0.10 41.2 9.6 191 65 122 37.1 10.6 6.65 206ND 1.0 ND 0.125 149 46.1 373 304 560 118 28.5 7.74 525ND 2.0 ND 0.25 122 32.8 645 207 518 96 22.3 7.94 488ND 2.0 ND 0.125 141 58.3 376 269 646 128 18.8 7.47 314ND 0.75 ND 0.10 147 48.6 278 208 562 133 21.5 7.05 317ND 0.75 1.20 116 24.8 258 317 651 182 31 8.15 365ND 1.50 1.02 113 32.1 283 272 613 195 24.4 8.79 193.4ND 0.75 1.15 112 352 268 961 208 50 9.3 699ND 0.75 0.64 J 139 39.5 328 440 821 223 15.8 9.47 559ND 0.75 0.20 J 84.3 19.8 776 210 946 147 32.8 7.42 902ND 1.50 ND 0.10 107 19.8 844 263 534 152 32.3 7.51 609ND 0.75 ND 0.10 82.5 12.9 549 253 396 123 22.1 7.43 901ND 0.75 ND 0.10 76.1 18.8 447 168 323 78.1 16.6 7.25 1066ND 0.75 ND 0.10 143 30.6 253 192 544 217 28.8 7.39 285ND 0.75 0.10 69.6 18 225 117 288 114 16.4 7.31 187ND 0.75 ND 0.10 66.7 11.5 160 129 301 96.6 12.3 7.1 316ND 0.75 ND 0.10 119 16.5 212 352 622 290 28.6 7.4 495 Selenium µg/L Silver µg/L Zinc µg/L O&G mg/L TDS mg/L BOD mg/L COD mg/L TSS mg/L NH3 mg/L pH EC µs/cm

0.75 0.10 75.43 17.25 223.25 158.25 341.75 75.25 16.25 7.25 315.501.63 0.25 124.25 38.75 419.25 269.75 615.25 159.50 31.33 7.75 583.750.88 0.15 48.83 21.50 196.00 111.50 273.50 84.25 15.08 0.50 268.25 -0.56 -0.13 2.19 -15.00 -70.75 -9.00 -68.50 -51.13 -6.36 6.50 -86.88

2.94 0.48 197.49 71.00 713.25 437.00 1025.50 285.88 53.94 8.51 986.13 mg/L
S:\Industrial Waste\Local Limits\2020 Local Limits Update\Appendix E 2020 Domestic and Commercial Data 2017-2019 7/2/2020
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Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX E-1
DOMESTIC COMMERCIAL SAMPLING DATA: CLEAR CREEK WWTP'S COLLECTION SYSTEM Revised Data Set with outliers removed: Clear Creek WWTP's collection system Date Arsenic µg/L Cadmium µg/L Chromium µg/L Copper µg/L Lead µg/L Mercury µg/L Molybdenum µg/L Nickel µg/L count 11 20 10 23 21 4 23 19 0 20 0 5 23 18 21 15 2 11 20 9 1 22 14 min outliers removed 0.48 0.125 0.325 12 0.175 0.03 0.025 1 max outliers removed 2.36 0.25 2.02 98.2 2 0.17 1.9 4.2 avg outliers removed 1.12 0.125
*see below 1.13 43.74
*see below 0.855 0.0360
*see below 0.824 2.682
AVERAGE AS MG/L 0.00112 0.000125 0.00113 0.04374 0.00085 0.0000360 0.000824 0.00268 Location Date Arsenic µg/L Cadmium µg/L Chromium µg/L Copper µg/L Lead µg/L Mercury µg/L Molybdenum µg/L Nickel µg/L CC4 07/27/17 1.40 J ND 0.125 1.50 J 41.6 0.50 J 0.025 J 0.60 J 2.80 CC4 10/10/17 ND 1.00 ND 0.25 2.00 J 40.2 1.20 J ND 0.025 ND 0.50 2.60 J CC4 03/14/18 ND 1.00 ND 0.25 1.00 J 30.4 ND 0.50 ND 0.025 1.50 J 2.70 J CC4 05/31/18 1.63 J ND 0.20 1.62 J 29.8 0.68 J ND 0.025 1.00 J 2.23 JCC5 07/27/17 1.60 J ND 0.125 1.10 J 27.0 ND 0.25 ND 0.025 ND 0.025 2.90 CC5 10/10/17 ND 1.00 ND 0.25 1.10 J 26.2 ND 0.50 ND 0.025 ND 0.50 3.20 J CC5 03/14/18 ND 1.00 ND 0.25 1.20 J 15.3 ND 0.50 ND 0.025 ND 0.50 2.80 J CC5 05/31/18 1.22 J ND 0.20 0.80 J 12.0 ND 0.175 ND 0.025 ND 0.475 2.36 J CC6 07/27/17 outlier 6.1 J ND 0.125 1.40 J out 126 0.90 J ND 0.025 1.70 J 2.40 JCC6 10/10/17 outlier 5.4 ND 0.25 ND 0.50 out 131 2.00 J ND 0.025 1.40 J ND 1.00CC6 03/14/18 outlier 9.7 ND 0.25 1.10 J 95.5 1.00 J ND 0.025 1.90 J 2.40 JCC6 05/31/18 2.36 J ND 0.20 1.09 J 70.2 0.77 J ND 0.025 0.97 J 2.26 JCC7 09/26/18 1.63 J outlier 6.09 1.10 J 84.3 0.95 J 0.170 J outlier 7.02 3.56 CC7 11/28/18 2.13 J ND outlier 0.4 ND 0.65 79.8 0.88 J ND out 0.18 outlier 6.01 3.69 J CC7 03/21/19 outlier 4.83 ND 0.20 1.32 J 98.2 1.08 J ND out 0.175 outlier 5.84 2.87 J CC7 06/12/19 1.37 J ND 0.20 2.02 J out 107 outlier 2.35J ND out 0.175 outlier 10.2 4.20 CC8 09/26/18 ND 0.475 ND 0.20 0.86 J 35.9 0.64 J ND 0.035 ND 0.475 2.72 CC8 11/28/18 ND 0.950 ND outlier 0.4 ND 0.65 42.6 1.13 outlier 1.98 ND 0.95 2.95CC8 03/21/19 ND 0.475 ND 0.20 1.09 J 35.5 0.94 J ND out 0.175 1.07 J 2.19 J CC8 06/12/19 ND 0.475 ND 0.20 ND 0.325 25.0 0.46 J ND out 0.175 ND 0.475 1.71 J CC9 09/26/18 ND 0.475 ND 0.20 1.32 J out 166 1.19 J ND 0.035 ND 0.475 outlier 4.56CC9 11/28/18 ND 0.475 ND 0.20 0.97 J 24.4 0.64 J ND out 0.175 1.02 J 3.24 CC9 03/21/19 ND 0.475 ND 0.20 1.37 J 19.0 1.15 J ND out 0.175 ND 0.475 2.22 J CC9 06/12/19 1.26 J ND 0.20 outlier 4.77 41.9 1.62 J ND out 0.175 ND 0.475 outlier 8.81 * 0.125 was used as the average for Cadmium data. All data used in the calculations was ND. The lowest data point was used as the average value. * Copper values over 100 were considered outliers to ensure that the domestic average was equal to or less than the plant influent average. *values of ND >= 0.175
were removed because
detection limit was
increased 7 times higher by
laboratory dilutions,
artificially increasing our
calculations.

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Packet Pg. 774
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX E-1
DOMESTIC COMMERCIAL SAMPLING DATA: CLEAR CREEK WWTP'S COLLECTION SYSTEM Revised Data Set with outliers remov
Date
countmin outliers removedmax outliers removedavg outliers removedAVERAGE AS MG/L Location Date
CC4 07/27/17CC4 10/10/17CC4 03/14/18CC4 05/31/18CC5 07/27/17CC5 10/10/17CC5 03/14/18CC5 05/31/18CC6 07/27/17CC6 10/10/17CC6 03/14/18CC6 05/31/18CC7 09/26/18CC7 11/28/18CC7 03/21/19CC7 06/12/19CC8 09/26/18CC8 11/28/18CC8 03/21/19CC8 06/12/19CC9 09/26/18CC9 11/28/18CC9 03/21/19CC9 06/12/19 Selenium µg/L Silver µg/L Zinc µg/L O&G mg/L TDS mg/L BOD mg/L COD mg/L TSS mg/L NH3 mg/L pH EC µs/cm 24 24 17 20 3 0 24 0 23 22 23 24 23 24 21 23

0.75 0.1 41.2 10 160 65 122 37 9.46 6.65 187
2 0.25 149 58 645 352 961 223 50 8.15 902

0.750
*see below 0.141 102.0 28.7 321.0 208.1 502.8 119.4 24.9 - 457.4

0.00075 0.000141 0.10199
Selenium µg/L Silver µg/L Zinc µg/L O&G mg/L TDS mg/L BOD mg/L COD mg/L TSS mg/L NH3 mg/L pH EC µs/cm ND 1.0 0.25 J 93.1 41 209 198 405 62.3 33.2 7.34 429ND 2.0 ND 0.25 112 34.9 519 231 515 77 47.1 7.79 592ND 2.0 ND 0.125 101 38 269 186 415 70 30.8 7.67 457ND 0.75 ND 0.10 131 48.0 325 331 569 121 38.0 7.25 415ND 1.0 ND 0.125 49.3 14.5 218 79 197 52.4 11.5 7.24 301ND 2.0 ND 0.25 73.4 34.6 410 92 209 58 13.9 6.76 384ND 2.0 ND 0.125 59.6 9.8 182 75 348 57 9.46 7.58 581ND 0.75 ND 0.10 41.2 9.6 191 65 122 37.1 10.6 6.65 206ND 1.0 ND 0.125 149 46.1 373 304 560 118 28.5 7.74 525ND 2.0 ND 0.25 122 32.8 645 207 518 96 22.3 7.94 488ND 2.0 ND 0.125 141 58.3 376 269 646 128 18.8 7.47 314ND 0.75 ND 0.10 147 48.6 278 208 562 133 21.5 7.05 317ND 0.75 outlier 1.2 116 24.8 258 317 651 182 31 8.15 365ND 1.50 outlier 1.02 113 32.1 283 272 613 195 24.4 outlier 8.79 193.4ND 0.75 outlier 1.15 112 352 268 961 208 50 outlier 9.3 699ND 0.75 outlier 0.64J 139 39.5 328 outlier 440 821 223 15.8 outlier 9.47 559ND 0.75 0.20 J 84.3 19.8 outlier 776 210 946 147 32.8 7.42 902ND 1.50 ND 0.10 107 19.8 outlier 844 263 534 152 32.3 7.51 609ND 0.75 ND 0.10 82.5 12.9 549 253 396 123 22.1 7.43 901ND 0.75 ND 0.10 76.1 18.8 447 168 323 78.1 16.6 7.25 outlier 1066ND 0.75 ND 0.10 143 30.6 253 192 544 217 28.8 7.39 285ND 0.75 0.10 69.6 18 225 117 288 114 16.4 7.31 187ND 0.75 ND 0.10 66.7 11.5 160 129 301 96.6 12.3 7.1 316ND 0.75 ND 0.10 119 16.5 212 352 622 outlier 290 28.6 7.4 495 * 0.75 was used as the average for Selenium data. All data used in the calculations was ND. The lowest data point was used as the average value.

S:\Industrial Waste\Local Limits\2020 Local Limits Update\Appendix E 2020 Domestic and Commercial Data 2017-2019 7/2/2020

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Packet Pg. 775
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX E-2
DOMESTIC COMMERCIAL SAMPLING DATA: STILLWATER WWTP'S COLLECTION SYSTEM City of Redding ND = LESS THAN MDL J = BETWEEN RL (REPORTING LEVEL) AND MDL (METHOD DETECTION LIMIT)Domestic sampling data: Stillwater WWTP's collection system Non-Detect data listed as 1/2 the MDL.

FULL DATA SET SHOWN,

REVISED DATA SET USED FOR

LOCAL LIMITS
Date Arsenic µg/L Cadmium µg/L Chromium µg/L Copper µg/L Lead µg/L Mercury µg/L Molybdenum µg/L count 12 23 7 23 23 5 23 14 0 23 0 8 23 14 23 23 0 12 23 10min all data used 0.48 0.125 0.325 7.78 0.175 0.03 0.475max all data used 7.90 0.4 9.19 166 3.33 0.18 8.2avg all data used 1.87 0.224 1.58 53.28 0.890 0.085 1.307std dev all data used 1.98 0.065 1.79 37.00 0.671 0.074 1.618avg+2std all data used 5.83 0.35 5.15 127.28 2.23 0.233 4.544avg-2std all data used -2.09 0.09 -1.99 -20.73 -0.45 -0.063 -1.930 Location Date Arsenic µg/L Cadmium µg/L Chromium µg/L Copper µg/L Lead µg/L Mercury µg/L Molybdenum µg/L SW 4 07/26/17 ND 0.50 ND 0.125 0.60 J 83.2 0.80 J ND 0.025 0.90 JSW 4 10/10/17 ND 1.00 ND 0.25 ND 0.50 50.6 ND 0.50 ND 0.025 ND 0.50SW 4 03/14/18 2.30 J ND 0.25 ND 0.50 36.9 ND 0.50 ND 0.025 2.10 JSW 4 05/31/18 1.64 J ND 0.20 1.05 J 43.0 0.55 J ND 0.025 0.97 JSW 5 07/26/17 1.10 J ND 0.125 2.30 J 43.1 1.00 J ND 0.025 0.90 JSW 5 10/10/17 ND 1.00 ND 0.25 1.80 J 42.3 ND 0.50 ND 0.025 ND 0.50SW 5 03/14/18 2.40 J ND 0.25 1.50 J 46.4 ND 0.50 ND 0.025 8.20SW 5 05/31/18 1.84 J ND 0.20 1.29 J 36.3 0.87 J ND 0.025 1.68 JSW 7 10/10/17 3.00 J ND 0.25 2.10 J 166.0 ND 0.50 ND 0.025 1.10 JSW 7 03/14/18 7.90 ND 0.25 1.20 J 118.0 ND 0.50 ND 0.025 2.30 JSW 7 05/31/18 6.50 ND 0.20 1.17 J 107.0 1.08 J ND 0.025 1.41 JSW 8 09/26/18 3.72 ND 0.20 3.00 90.3 3.33 ND 0.035 2.08 JSW 8 11/28/18 ND 0.950 ND 0.40 ND 0.65 20.7 ND 0.35 ND 0.175 ND 0.95SW 8 03/21/19 1.18 J ND 0.20 0.70 J 22.0 0.70 J ND 0.175 ND 0.475SW 8 06/12/19 3.69 ND 0.20 9.19 60.5 1.80 J ND 0.175 1.72 JSW 9 09/26/18 ND 0.475 ND 0.20 1.32 46.6 0.93 J ND 0.035 ND 0.475SW 9 11/28/18 ND 0.475 ND 0.20 ND 0.325 11.5 ND 0.175 ND 0.175 ND 0.475SW 9 03/21/19 ND 0.475 ND 0.20 2.03 J 35.8 0.72 J ND 0.175 ND 0.475SW 9 06/12/19 ND 0.475 ND 0.20 1.08 J 44.8 0.79 J ND 0.175 ND 0.475SW10 09/26/18 ND 0.475 ND 0.20 1.43 43.7 1.21 J ND 0.035 ND 0.475SW10 11/28/18 ND 0.475 ND 0.20 0.78 J 7.78 0.41 J ND 0.175 ND 0.475SW10 03/21/19 ND 0.950 ND 0.40 ND 0.65 33.3 0.96 J ND 0.175 ND 0.95SW10 06/12/19 ND 0.475 ND 0.20 1.13 J 35.6 1.79 J ND 0.175 ND 0.475 Statistical Data Outlier Evlauation Arsenic µg/L Cadmium µg/L Chromium µg/L Copper µg/L Lead µg/L Mercury µg/L Molybdenum µg/L1st quartile 0.48 0.20 0.68 35.70 0.50 0.03 0.483rd quartile 2.35 0.25 1.65 55.55 0.98 0.18 1.553rdQ-1stQ, interquartile(IQ) range 1.88 0.05 0.98 19.85 0.48 0.15 1.07data lower limit = 1stQ-1.5x IQ range -2.34 0.1250 -0.79 5.93 -0.22 -0.20 -1.13data upper limit = 3rdQ+1.5 x IQ range 5.16 0.3250 3.11 85.33 1.70 0.40 3.15 µg/L
S:\Industrial Waste\Local Limits\2020 Local Limits Update\Appendix E 2020 Domestic and Commercial Data 2017-2019 7/2/2020
Packet Pg. 776 Page 1 of 6
Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX E-2
DOMESTIC COMMERCIAL SAMPLING DATA: STILLWATER WWTP'S COLLECTION SYSTEM City of ReddingDomestic sampling da
Non-Detect data listed as 1/2 the MDL.

FULL DATA SET SHOWN,

REVISED DATA SET USED FOR

LOCAL LIMITS
Date
countmin all data usedmax all data usedavg all data usedstd dev all data usedavg+2std all data usedavg-2std all data used Location Date
SW 4 07/26/17SW 4 10/10/17SW 4 03/14/18SW 4 05/31/18SW 5 07/26/17SW 5 10/10/17SW 5 03/14/18SW 5 05/31/18SW 7 10/10/17SW 7 03/14/18SW 7 05/31/18SW 8 09/26/18SW 8 11/28/18SW 8 03/21/19SW 8 06/12/19SW 9 09/26/18SW 9 11/28/18SW 9 03/21/19SW 9 06/12/19SW10 09/26/18SW10 11/28/18SW10 03/21/19SW10 06/12/19 Statistical Data Outlier Evlauation1st quartile3rd quartile3rdQ-1stQ, interquartile(IQ) rangedata lower limit = 1stQ-1.5x IQ rangedata upper limit = 3rdQ+1.5 x IQ range Ammonia Field
Nickel µg/L Selenium µg/L Silver µg/L Zinc µg/L O&G mg/L TDS mg/L BOD mg/L COD mg/L TSS mg/L NH3 mg/L pH 1 23 13 23 23 20 23 3 0 23 0 23 23 23 23 23 23 23
1 0.8 0.1 33.4 9 186 49 122 47 7.31 6.97

5.62 2.0 0.32 257 106 651 353 1110 300 72 8.6

2.805 1.163 0.150 117.2 34.7 289.9 210.4 478.6 150.9 30.8 -1.104 0.552 0.071 60.1 22.2 106.5 92.4 215.3 61.5 16.2 -

5.01 2.267 0.2934 237.4 79.2 502.9 395.2 909.2 273.9 63.1 -0.60 0.059 0.0075 -3.1 -9.7 76.9 25.7 47.9 27.8 -1.5 - Ammonia pH
Nickel µg/L Selenium µg/L Silver µg/L Zinc µg/L O&G mg/L TDS mg/L BOD mg/L COD mg/L TSS mg/L NH3 mg/L pH

3.10 ND 1.0 ND 0.125 97.0 12.7 300 132 336 120 42.6 7.242.20 J ND 2.0 ND 0.25 67.8 16.4 651 100 277 85 30.5 7.27 ND 1.00 ND 2.0 ND 0.125 81.8 11.4 222 122 266 107 24.3 7.43

1.94 J ND 0.75 ND 0.10 77.2 15.7 256 198 292 110 37.9 7.353.50 ND 1.0 0.26 J 257 41.8 248 341 678 300 72 8.052.60 J ND 2.0 ND 0.25 186 106 508 293 537 210 45.2 8.162.70 J ND 2.0 ND 0.125 147 51.5 287 201 511 114 52 8.62.13 J ND 0.75 0.32 J 167 64.3 353 321 634 114 59.8 7.962.10 J ND 2.0 ND 0.25 121 48.9 312 178 1110 194 43.6 8.072.10 J ND 2.0 ND 0.125 95.4 42.5 332 221 579 135 28.4 7.712.24 J ND 0.75 ND 0.10 118 46.7 288 262 588 150 30.6 7.555.62 ND 0.75 ND 0.10 191 48.3 293 297 562 249 32 7.863.00 J ND 1.50 ND 0.10 36.5 9.9 186 49 122 47 7.31 6.971.96 J ND 0.75 ND 0.10 67.7 9.3 196 80 158 53.4 11.9 7.13.35 ND 0.75 ND 0.10 229 31.1 342 289 486 173 30.4 7.824.45 ND 0.75 ND 0.10 108 19.5 253 212 522 202 30.2 7.541.59 J ND 0.75 ND 0.10 33.4 47.8 205 256 648 174 10 7.133.07 ND 0.75 ND 0.10 68.1 18.4 219 149 265 106 18.2 7.93.48 ND 0.75 ND 0.10 123 29.4 330 325 523 168 20.4 7.594.86 ND 0.75 ND 0.10 154 42.5 243 353 632 216 27.8 8.241.67 J ND 0.75 ND 0.10 34.2 21.7 204 98 258 99 15 7.442.29 J ND 1.50 ND 0.20 94.4 36.4 200 107 527 180 17.4 7.453.56 ND 0.75 0.23 J 140 26.7 240 256 496 164 20.8 7.72 Nickel µg/L Selenium µg/L Silver µg/L Zinc µg/L O&G mg/L TDS mg/L BOD mg/L COD mg/L TSS mg/L NH3 mg/L pH

2.10 0.75 0.10 72.65 17.40 220.50 127.00 284.50 108.50 19.30 7.393.42 1.75 0.22 150.50 47.25 321.00 291.00 583.50 187.00 40.25 7.931.32 1.00 0.12 77.85 29.85 100.50 164.00 299.00 78.50 20.95 0.540.13 -0.75 -0.07 -44.13 -27.38 69.75 -119.00 -164.00 -9.25 -12.13 6.585.39 3.25 0.39 267.28 92.03 471.75 537.00 1032.00 304.75 71.68 8.74 mg/L
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Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX E-2
DOMESTIC COMMERCIAL SAMPLING DATA: STILLWATER WWTP'S COLLECTION SYSTEM City of ReddingDomestic sampling da
Non-Detect data listed as 1/2 the MDL.

FULL DATA SET SHOWN,

REVISED DATA SET USED FOR

LOCAL LIMITS
Date
countmin all data usedmax all data usedavg all data usedstd dev all data usedavg+2std all data usedavg-2std all data used Location Date
SW 4 07/26/17SW 4 10/10/17SW 4 03/14/18SW 4 05/31/18SW 5 07/26/17SW 5 10/10/17SW 5 03/14/18SW 5 05/31/18SW 7 10/10/17SW 7 03/14/18SW 7 05/31/18SW 8 09/26/18SW 8 11/28/18SW 8 03/21/19SW 8 06/12/19SW 9 09/26/18SW 9 11/28/18SW 9 03/21/19SW 9 06/12/19SW10 09/26/18SW10 11/28/18SW10 03/21/19SW10 06/12/19 Statistical Data Outlier Evlauation1st quartile3rd quartile3rdQ-1stQ, interquartile(IQ) rangedata lower limit = 1stQ-1.5x IQ rangedata upper limit = 3rdQ+1.5 x IQ range Field
EC µs/cm
23 289
2039
608.5353.8
1316.2
-99.2
EC
EC µs/cm
605
2039
402629658626513646672630644334360320692289346432519764963378534 EC µs/cm
390.00652.00262.00
-3.00
1045.00
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Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX E-2
DOMESTIC COMMERCIAL SAMPLING DATA: STILLWATER WWTP'S COLLECTION SYSTEM Revised Data Set with outliers removed: Stillwater WWTP's collection system Date Arsenic µg/L Cadmium µg/L Chromium µg/L Copper µg/L Lead µg/L Mercury µg/L Molybdenum µg/L count 9 18 7 20 19 4 18 12 0 16 0 8 18 11 20 14 0 9 19 10 min outliers removed 0.48 0.13 0.33 7.78 0.18 0.03 0.48 max outliers removed 3.72 0.25 2.30 83.20 1.21 0.04 2.30avg outliers removed 1.36 0.125 *see below 1.15
*see below 39.16 0.677 0.0271
*see below 0.994
Location Date Arsenic µg/L Cadmium µg/L Chromium µg/L Copper µg/L Lead µg/L Mercury µg/L Molybdenum µg/L SW 4 07/26/17 ND 0.50 ND 0.125 0.60 J 83.2 0.80 J ND 0.025 0.90 JSW 4 10/10/17 ND 1.00 ND 0.25 ND 0.50 50.6 ND 0.50 ND 0.025 ND 0.50 SW 4 03/14/18 2.30 J ND 0.25 ND 0.50 36.9 ND 0.50 ND 0.025 2.10 J SW 4 05/31/18 1.64 J ND 0.20 1.05 J 43.0 0.55 J ND 0.025 0.97 J SW 5 07/26/17 1.10 J ND 0.125 2.30 J 43.1 1.00 J ND 0.025 0.90 J SW 5 10/10/17 ND 1.00 ND 0.25 1.80 J 42.3 ND 0.50 ND 0.025 ND 0.50SW 5 03/14/18 2.40 J ND 0.25 1.50 J 46.4 ND 0.50 ND 0.025 outlier 8.2 SW 5 05/31/18 1.84 J ND 0.20 1.29 J 36.3 0.87 J ND 0.025 1.68 J SW 7 10/10/17 3.00 J ND 0.25 2.10 J outlier 166 ND 0.50 ND 0.025 1.10 J SW 7 03/14/18 outlier 7.9 ND 0.25 1.20 J outlier 118 ND 0.50 ND 0.025 2.30 JSW 7 05/31/18 outlier 6.5 ND 0.20 1.17 J outlier 107 1.08 J ND 0.025 1.41 J SW 8 09/26/18 3.72 ND 0.20 out 3 outlier 90.3 outlier 3.33 ND 0.035 2.08 J SW 8 11/28/18 ND 0.950 ND outlier 0.4 ND 0.65 20.7 ND 0.35 ND out 0.175 ND 0.95 SW 8 03/21/19 1.18 J ND 0.20 0.70 J 22.0 0.70 J ND out 0.175 ND 0.475 SW 8 06/12/19 3.69 ND 0.20 outlier 9.19 60.5 outlier 1.8 J ND out 0.175 1.72 JSW 9 09/26/18 ND 0.475 ND 0.20 1.32 46.6 0.93 J ND 0.035 ND 0.475SW 9 11/28/18 ND 0.475 ND 0.20 ND 0.325 11.5 ND 0.175 ND out 0.175 ND 0.475 SW 9 03/21/19 ND 0.475 ND 0.20 2.03 J 35.8 0.72 J ND out 0.175 ND 0.475SW 9 06/12/19 ND 0.475 ND 0.20 1.08 J 44.8 0.79 J ND out 0.175 ND 0.475SW10 09/26/18 ND 0.475 ND 0.20 1.43 43.7 1.21 J ND 0.035 ND 0.475SW10 11/28/18 ND 0.475 ND 0.20 0.78 J 7.78 0.41 J ND out 0.175 ND 0.475SW10 03/21/19 ND 0.950 ND outlier 0.4 ND 0.65 33.3 0.96 J ND out 0.175 ND 0.95SW10 06/12/19 ND 0.475 ND 0.20 1.13 J 35.6 outlier 1.79 J ND out 0.175 ND 0.475 * 0.125 was used as the average for Cadmium data. All data used in the calculations was ND. The lowest data point was used as the average value. *values of ND >= 0.175 were removed because
detection limit was
increased 7 times higher by
laboratory.

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Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX E-2
DOMESTIC COMMERCIAL SAMPLING DATA: STILLWATER WWTP'S COLLECTION SYSTEM Revised Data Set with outliers remov
Date
countmin outliers removedmax outliers removedavg outliers removed Location Date
SW 4 07/26/17SW 4 10/10/17SW 4 03/14/18SW 4 05/31/18SW 5 07/26/17SW 5 10/10/17SW 5 03/14/18SW 5 05/31/18SW 7 10/10/17SW 7 03/14/18SW 7 05/31/18SW 8 09/26/18SW 8 11/28/18SW 8 03/21/19SW 8 06/12/19SW 9 09/26/18SW 9 11/28/18SW 9 03/21/19SW 9 06/12/19SW10 09/26/18SW10 11/28/18SW10 03/21/19SW10 06/12/19 Nickel µg/L Selenium µg/L Silver µg/L Zinc µg/L O&G mg/L TDS mg/L BOD mg/L COD mg/L TSS mg/L NH3 mg/L pH 1 19 11 20 20 18 19 2 0 20 0 20 18 20 19 20 19 20

1.00 0.75 0.10 33.40 9.30 186.00 49.00 122.00 47.00 7.31 6.974.86 2.00 0.26 257.00 106.00 353.00 353.00 678.00 300.00 59.80 8.602.68 0.75 *see below 0.143 117.15 34.73 262.33 210.43 449.86 150.89 28.92 - Nickel µg/L Selenium µg/L Silver µg/L Zinc µg/L O&G mg/L TDS mg/L BOD mg/L COD mg/L TSS mg/L NH3 mg/L pH

3.10 ND 1.0 ND 0.125 97.0 12.7 300 132 336 120 42.6 7.242.20 J ND 2.0 ND 0.25 67.8 16.4 outlier 651 100 277 85 30.5 7.27 ND 1.00 ND 2.0 ND 0.125 81.8 11.4 222 122 266 107 24.3 7.43

1.94 J ND 0.75 ND 0.10 77.2 15.7 256 198 292 110 37.9 7.353.50 ND 1.0 0.26 J 257 41.8 248 341 678 300 outlier 72 8.052.60 J ND 2.0 ND 0.25 186 106 outlier 508 293 537 210 45.2 8.162.70 J ND 2.0 ND 0.125 147 51.5 287 201 511 114 52 8.62.13 J ND 0.75 outlier 0.32 J 167 64.3 353 321 634 114 59.8 7.962.10 J ND 2.0 ND 0.25 121 48.9 312 178 outlier 1110 194 43.6 8.072.10 J ND 2.0 ND 0.125 95.4 42.5 332 221 579 135 28.4 7.712.24 J ND 0.75 ND 0.10 118 46.7 288 262 588 150 30.6 7.55 outlier 5.62 ND 0.75 ND 0.10 191 48.3 293 297 562 249 32 7.86

3.00 J ND 1.50 ND 0.10 36.5 9.9 186 49 122 47 7.31 6.971.96 J ND 0.75 ND 0.10 67.7 9.3 196 80 158 53.4 11.9 7.13.35 ND 0.75 ND 0.10 229 31.1 342 289 486 173 30.4 7.824.45 ND 0.75 ND 0.10 108 19.5 253 212 522 202 30.2 7.541.59 J ND 0.75 ND 0.10 33.4 47.8 205 256 648 174 10 7.133.07 ND 0.75 ND 0.10 68.1 18.4 219 149 265 106 18.2 7.93.48 ND 0.75 ND 0.10 123 29.4 330 325 523 168 20.4 7.594.86 ND 0.75 ND 0.10 154 42.5 243 353 632 216 27.8 8.241.67 J ND 0.75 ND 0.10 34.2 21.7 204 98 258 99 15 7.442.29 J ND 1.50 ND 0.20 94.4 36.4 200 107 527 180 17.4 7.453.56 ND 0.75 0.23 J 140 26.7 240 256 496 164 20.8 7.72 * 0.75 was used as the average for Selenium data. All data used in the calculations was ND. The lowest data point was used as the average value.

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Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX E-2
DOMESTIC COMMERCIAL SAMPLING DATA: STILLWATER WWTP'S COLLECTION SYSTEM Revised Data Set with outliers remov
Date
countmin outliers removedmax outliers removedavg outliers removed Location Date
SW 4 07/26/17SW 4 10/10/17SW 4 03/14/18SW 4 05/31/18SW 5 07/26/17SW 5 10/10/17SW 5 03/14/18SW 5 05/31/18SW 7 10/10/17SW 7 03/14/18SW 7 05/31/18SW 8 09/26/18SW 8 11/28/18SW 8 03/21/19SW 8 06/12/19SW 9 09/26/18SW 9 11/28/18SW 9 03/21/19SW 9 06/12/19SW10 09/26/18SW10 11/28/18SW10 03/21/19SW10 06/12/19 EC µs/cm
19 289.00963.00543.45
EC µs/cm
605
outlier 2039
402629658626513646672630644334360320692289346432519764963378534 S:\Industrial Waste\Local Limits\2020 Local Limits Update\Appendix E 2020 Domestic and Commercial Data 2017-2019 7/2/2020

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Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge APPENDIX E-3

DOMESTIC AND COMMERCIAL SAMPLING LOCATIONS
Location closest street address Manhole Lift Station Description of contributing flow TranslationCC4 4105 Remington Dr N3-51 Remington 20 houses Domestic flow only CC = Clear Creek WWTPCC5 3797 Cheryl Dr R9-51 Cheryl 78 houses Domestic flow only CC = Clear Creek WWTPCC6 5650 Indianwood Dr V9-7 Riverbend 95 houses Domestic flow only CC = Clear Creek WWTPCC7 420 Hartnell Ave O8-4 Hartnell Domestic + Commercial flow CC = Clear Creek WWTPCC8 2600 Park Marina Dr, in parking lot upstream of 207 Locust St M8-36 upstream of Layton Ln Domestic + Commercial flow CC = Clear Creek WWTP CC9 975 N Market St H7-6
upstream of North Market Lift Stn Domestic + Commercial flow CC = Clear Creek WWTP SW4 12660 Old Oregon NW12-5 Tierra Oaks 75 houses Domestic flow only SW = Stillwater WWTPSW5 1148 Bingham Dr (not yet built) B11-25 Hope 17 houses Domestic flow only SW = Stillwater WWTPSW7 Shasta View Dr, west of (behind) house at 2700 Madison River Dr. T13-5 N/A 329 houses SW = Stillwater WWTP SW8
2703 Hawn Ave (manhole closest to park) O13-17 N/A Domestic + Commercial flow SW = Stillwater WWTP SW9
5289 Mica Ct, hike in a little south of the pond. House to south is 5271 Mica Ct E9-9 N/A Domestic + Commercial flow SW = Stillwater WWTP SW10
493 Bitterroot Dr inside of Redwood Estates Mobile Home Park D7-2 N/A Domestic + Commercial flow SW = Stillwater WWTP S:\Industrial Waste\Local Limits\2020 Local Limits Update\Appendix E 2020 Domestic and Commercial Data 2017-2019 7/2/2020

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Attachment: Previous Staff Report - 09-01-20 (9.11(g)--Ordinance amending Wastewater Local Discharge

CITY OF REDDING

REPORT TO THE CITY COUNCIL
Recommendation
Offer Ordinance amending Redding Municipal Code (RMC) Title 11 (Vehicles and Traffic), Section 11.04 (Definitions), 11.24 (Stopping, Standing and Parking), 11.28 (Parking Meters), addressing parking, meters, and the use of City of Redding streets in the City of Redding, for first reading by title only and waive the full reading; authorize the City Attorney to prepare, and the City Clerk to publish a summary of the ordinance; and find that the adoption of this ordinance is not a project within the meaning of the California Environmental Quality Act (“CEQA”) pursuant to CEQA Guidelines sections 15060(c)(2) because the adoption of the ordinance will not result in a direct or reasonably foreseeable indirect physical change in the environment) and 15061(b)(3) (there is no possibility the activity in question may have a significant effect on the environment), the adoption of this ordinance is therefore not subject to the provisions requiring environmental review. This ordinance establishes changes in administration in parking and enforcement of parking within the City of Redding. As such, it will have no significant effect on traffic volume or any resulting impact on the environment resulting therefrom.

Fiscal Impact
There is no direct fiscal impact to amending the ordinance other than staff time. However, modification will allow the parking program to function with the implementation of new methods for collecting parking rate revenue and conducting enforcement. Sufficient funds to cover the staff time necessary to implement the requisite changes are included in the adopted Streets Division budget for Fiscal Year 2021-22, and are directly funded by the Parking Mitigation Fund.

MEETING DATE: June 21, 2022
ITEM NO. 9.11(h)
FROM:
***APPROVED BY***
[email protected] [email protected]
SUBJECT: 9.11(h)--Consider Ordinance amending Redding Municipal Code Title 11, (Vehicles and Traffic) to modernize the parking code to allow, in part, alternative collection, tracking, and enforcement systems
Chuck Aukland, Public
Works Director
Packet Pg. 783
Report to Redding City Council June 15, 2022
Re: 9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic) Page 2 Alternative Action
The City Council (Council) may choose not to adopt the attached ordinance and retain the Redding Municipal Code (RMC) as is. If the Council chooses not to adopt the ordinance, the parking strategy, as approved, would not be able to be implemented. This would mostly be a result of the currently out-of-date RMC that only references parking meters and not the modern parking collection devices such as pay-stations and other alternatives to standard parking meters such as mobile parking applications.

Background/Analysis
On April 5, 2022, the Council approved recommendations included in the Operational Needs Assessment (Assessment) for the Parking Strategy in Downtown Redding. The Assessment provided a series of recommendations to be implemented in a phased approach to procure the equipment and resources needed to get a new program up and running. One of the major recommendations was to update the Municipal Code to allow use of multi-space meter stations, the use of credit cards or mobile payment tools, and Citation and Permit Management System software. These updates will modernize the ordinance to allow for alternative payment methods, streamline modifications, and clarify various aspects of the parking management system.

The revised ordinance lists a variety of changes to Chapter 11 of the RMC. The list below summarizes the key changes and explains the need for the change. The full strikeout/underline version of the code is attached to the report.

11.04.010 - Definitions - Additional parking terms have been added to the list of terms to define unique parking terms that may be utilized throughout Chapter 11. For example, a couple key terms are listed:
• “Paid parking device” means any device used to accept payment for parking, such as parking meters, pay stations, mobile devices or other methods approved by the City Engineer or their designee.
• “Time limited parking zone” means a group of parking spaces, on a public right-of-way or on City owned or operated property, that are delineated by a posted sign and for which allowed duration of parking is limited.

11.24 - Loading Zones - No substantial change, but in an effort to streamline the code, the lists of loading zones are proposed to be removed from the RMC and it will simply refer to the adopted resolution. The City of Redding GIS maps identify the designated zones and the signs on the street will inform the public of the designated zones.

11.24.170 - Time limited parking zones – Similar to Loading Zones, no substantial change, but removes the list of zones and simply refers to the adopted resolution that established the zone.

11.24.250 - Total consecutive hours time limit - The parking consultant has recommended that the City reduce the maximum number of total consecutive hours a vehicle can be parked on a City street from 120 hours to the industry standard of 72 hours (3 days) to speed up the process of removal and vacation of the parking space.

11.24.350 - Residential parking permit areas - The residential parking permit system would be updated to be consistent with the overall parking goal of maintaining an 85 percent occupancy rate.

Packet Pg. 784
Report to Redding City Council June 15, 2022
Re: 9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic) Page 3

11.28 - Paid Parking Devices and Zones - The RMC is generally amended to utilize paid parking devices as defined above to collect fares for parking. 11.28.030 defines the locations and how they are established and 11.28.040 provides the means of installation. 11.28.050 defines how the new devices shall be operated. There are not substantial changes other than general updates to allow the newer technologies and devices.

11.28.060 – Time limits, charges and hours of operation (Rates) - The rates are established by resolution as they were previously. The rates would be established or changed based on the 85 percent target occupancy rate. The target occupancy rate is to determine if the rates are accomplishing the goals of the strategy to ensure available parking for Downtown patrons throughout the day. A rate Resolution is not included with this proposed action but will be presented for consideration at a future City Council meeting.

11.28.070 – Issuance of parking permits - There is a new section proposed to establish an Employee Parking permit program that would be established in the near future following initial implementation. The purpose is to help manage the employee parking into specific parking spaces allowed for in areas that have sufficient capacity.

11.28.090 - Temporary parking permit program - The temporary parking permit program is expanded to include the “hood” program. The parking meter hood program sections of 11.28.095 are proposed to be removed, but are addressed in the temporary parking section. This program is more comprehensive to allow for more types of temporary uses such as construction and events.

Together, the proposed modifications to the RMC will allow modernization of the municipal code and implementation of new programs that will result in a sustainable parking system.

Council Priority/City Manager Goals
• Economic Development – “Facilitate and become a catalyst for economic development in Redding to create jobs, retain current businesses and attract new ones, and encourage investment in the community.”
Attachments
^Clean Ordinance
^Strikeout Ordinance
Previous Staff Report 4-5-22
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DRAFT NEW ORDINANCE
ORDINANCE NO. _____
AN ORDINANCE OF THE CITY OF REDDING AMENDING TITLE 11
(VEHICLES AND TRAFFIC), CHAPTER 11.04 (TRAFFIC
REGULATIONS GENERALLY) BY AMENDING SECTIONS 11.04.010
(DEFINITIONS), 11.04.040 (WHEN VEHICLES TO BE REMOVED FROM

STREETS, OR FROM ANY OFF-STREET PARKING FACILITY OWNED
OR OPERATED BY THE CITY), AND CHAPTER 11.24 (STOPPING,
STANDING AND PARKING), BY AMENDING SECTIONS 11.24.010 (IN FRONT OF PLACE OF ASSEMBLY), 11.24.060 (ANGLE PARKING),

11.24.070 (COMMERCIAL VEHICLES/TRAILERS IN OR ADJACENT TO RESIDENTIAL AND UNCLASSIFIED DISTRICTS), 11.24.080
(PASSENGER LOADING ZONES), 11.24.120 (LOADING ZONES
DESIGNATED), 11.24.140 (SCHOOL BUS LOADING ZONES –
MARKING), 11.24.150 (SCHOOL BUS LOADING ZONES –
REGULATIONS), 11.24.170 (THREE HOUR PARKING ZONES), 11.24.230 (PARKING AND LOADING IN ALLEYS), 11.24.250 (TOTAL
CONSECUTIVE HOURS TIME LIMIT), 11.24.260 (PRIVATE AREAS),

11.24.300 (PARKING FOR DISABLED PERSONS), 11.24.310 (PARKING FOR DISABLED PERSONS ON PRIVATE PROPERTY), 11.24.350
(RESIDENTIAL PARKING PERMIT AREAS – DESIGNATION),
REPEALING SECTIONS 11.24.090 (BUS LOADING ZONES –
DESIGNATED), 11.24.100 BUS LOADING ZONES – MARKING), 11.24.110 (BUS LOADING ZONES – PARKING PROHIBITED), 11.24.130 (SCHOOL BUS LOADING ZONES – ESTABLISHED), 11.24.160 (PARKING NEAR HOSPITALS), 11.24.180 (TWO-HOUR PARKING ZONES), 11.24.190 (ONE-HOUR PARKING ZONES), 11.24.200 (FORTY-FIVE MINUTE
PARKING ZONES), 11.24.210 (THIRTY MINUTE PARKING ZONES),

11.24.220 (TWELVE MINUTE PARKING ZONES), 11.24.270 (PARKING ON GRADES), 11.24.280 (PROHIBITED ON STREETS AUTHORIZED FOR SPECIAL PURPOSE), 11.24.290 (SPECIAL PRIVILEGES DURING CONVENTIONS), 11.24.320 (PARKING FOR LAW ENFORCEMENT
VEHICLES), 11.24.330 (PARKING AT THE REDDING MUNICIPAL
AIRPORT), 11.24.340 (RESIDENTIAL PARKING PERMIT AREAS – DESIGNATION) AND ADDING SECTIONS 11.24.360 (RESIDENTIAL PARKING PERMIT – FEES), 11.24.370 (RESIDENTIAL PARKING
PERMIT AREA – DISESTABLISHMENT), 11.24.380 (PENALTIES,
LIABILITY AND ENFORCEMENT), AND CHAPTER 11.28 (PARKING
METERS), BY RENAMING AND RE-TITLING CHAPTER 11.28
(PARKING METERS) TO CHAPTER 11.28 (PAID PARKING DEVICES), AMENDING SECTIONS 11.28.010 (DEFINITIONS), 11.28.020 (PARKING METER ZONE DESIGNATED), 11.28.030 (PARKING SPACE MARKING),

11.28.040 (INSTALLATION), 11.28.050 (OPERATION), 11.28.060 (TIME Packet Pg. 786 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic)) LIMITS, CHARGES AND HOURS OF OPERATION), 11.28.070 (RENTING IN CITY LOTS), 11.28.080 (VIOLATIONS DESIGNATED), 11.28.090 (HOOD – CONSTRUCTION), 11.28.120 (HOOD – REVOCATION),

11.28.130 (HOOD – VIOLATIONS), 11.28.140 (HOOD – REVOCATION HEARING), AND 11.28.150 (PARKING METER ZONE TIME LIMITS DESIGNATED), AND REPEALING SECTIONS 11.28.095 (HOOD –

COURTHOUSE OR JAIL RELATED LAW ENFORCEMENT
TRANSPORT ACTIVITY), 11.28.100 (HOOD – UTILITY), 11.28.110 (HOOD – LOSS), AND ADDING 11.28.075 (EMPLOYEE PARKING
PERMITS) AND 11.28.160 (ENFORCEMENT AND CITATIONS) ALL

RELATING TO THE REGULATION OF VEHICLE PARKING

NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF REDDING DOES ORDAIN AS FOLLOWS:

Section 1. Title 11 (Vehicles and Traffic), Chapter 11.04 (Traffic Regulations Generally), Section 11.04.010 is amended to read as follows:

11.04.010 – Definitions.

A. Whenever in this title the following terms are used, they shall have the meanings respectively ascribed to them that are set forth in the California Vehicle Code:

1. Alley;

2. Business district;

3. Crosswalk;

4. Driveway;

5. Intersection;

6. Loading zone;

7. Operator;

8. Park;

9. Parking area;

10. Roadway;

11. Safety zone;

12. Sidewalk;
Packet Pg. 787 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic))

13. Street;

14. Traffic;

15. Vehicle.

B. Whenever in this title the following term is used, it shall have the meaning respectively ascribed to it in this Chapter:

1. “Automated License Plate Recognition” (ALPR) means technology that can automatically detect vehicles’ license plates, read the plate numbers, and record the plate number, date, time, and geographical location of the vehicles.

2. “Block face” means the block in which the vehicle is parked, bordered by an intersection at each end.

3. “Digital parking permit” means a non-physical parking permit that is associated with at least one vehicle’s license plate number.

4. “Employee parking permit zone” means a street, portion of a street, or other public or private parking areas established as a zone in which the parking of vehicles is limited to those who obtain an employee parking permit.

5. “No re-park” means a vehicle that has parked longer than the posted time limit cannot be moved to park within the same block face or parking facility after the expiration of the maximum posted time limit. A vehicle may not return to the initial block face or parking facility sooner than two (2) hours following the expiration of the initial time period.

6. “Paid parking device” means any device used to accept payment for parking, such as parking meters, pay stations, mobile devices, or other methods approved by the City Engineer, or his/her designee.

7. “Paid parking zone” means a street, portion of a street, or other public or private parking areas established as a zone in which the parking of vehicles or other uses authorized upon such street or other public parking area is regulated by a paid parking device.

8. “Parking facility” means the area set aside for the storage and parking of vehicles including parking lots and garages.

9. “Parking space” means a space in a parking facility or in a public right-of-way, street, alley, or roadway that is designed for the leaving of a vehicle.

10. “School bus” means a bus that transports students from home to school, school to home, or to school-sponsored events.

Packet Pg. 788 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic))

11. “Time limited parking zone” means a group of parking spaces on a public right-ofway or on City-owned or operated property that are delineated by a posted sign and for which allowed duration of parking is limited.

12. "Traffic control map" means the traffic control map adopted by the City Council and maintained on file in the office of the City Clerk and all notations and information set forth thereon pertaining to the regulation and control of traffic in the City.

Section 2. Title 11 (Vehicles and Traffic), Chapter 11.04 (Traffic Regulations Generally), Section 11.04.040 is amended to read as follows:

11.04.040 – Vehicle removal from public streets and spaces.

1. Any vehicle that has been parked or left standing on a street or alley for more than a consecutive period of seventy-two (72) hours;

2. Any vehicle which is parked or left standing on a street or alley, or any portion thereof, when the use of the street or alley is authorized for a purpose other than the normal flow of traffic, or for the movement of equipment, articles or structures of unusual size, and the parking of the vehicles would prohibit or interfere with the use or movement; provided that signs giving notice that the vehicles may be removed are erected or placed at least twenty-four hours prior to the removal;

3. Any vehicle which is parked or left standing in any off-street parking facility owned or operated by the City for more than seventy-two (72) consecutive hours, provided that conspicuously-placed signs giving notice that vehicles may be removed are erected at least thirty days prior to the implementation of this provision.

B. Removal of any such vehicle shall be to a garage designated by the chief of police and shall be in accordance with the requirements of the California Vehicle Code section 22651.

Section 3. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.010 is amended to read as follows:

11.24.010 – In front of place of assembly.

Except when it is actively loading or unloading, it is unlawful to stand or park any vehicle immediately in front of the corridor, passageway, exit or door of any theater, school, church or other place of public assembly, during such times as people are assembled therein.

Packet Pg. 789 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic)) Section 4. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.060 is amended to read as follows:

11.24.060 – Angle parking.

A. Pursuant to California Vehicle Code section 22503, angle parking is authorized on the following streets:

1. Arboretum Drive, on the north side;

2. Butte Street, on both sides, between West Street and Oregon Street;

3. Butte Street, on the north side, west from the Market-Pine alley to Pine Street;

4. Butte Street, on the north and south sides, between Pine Street and East Street;

5. Center Street, on both sides, between Shasta Street and Division Street;

6. Center Street, on the east side, from one hundred thirty feet south of the south curbline of Placer Street to Sacramento Street;

7. Civic Center Drive, on the east side;

8. Division Street, on the north side of the westerly half, between California Street and Center Street;

9. Eureka Way, on the north side, between East Street and Pine Street;

10. Eureka Way, on the south side, between East Street and Liberty Street;

11. Gold Street, on the north side, between West Street and Railroad Avenue;

12. Gold Street, on the south side, between Market Street and Pine Street;

13. Liberty Street, on the east side, between Placer Street and Butte Street;

14. Market Street, on the west side, between Placer Street and Gold Street;

15. Oregon Street, on the east side, between Sacramento and the Eureka Way overpass;

16. Oregon Street, on the west side, between Tehama Street and Yuba Street;

17. Oregon Street, on the west side, from one hundred feet south of the south curbline of Placer Street to South Street;

18. Oregon Street, on the west side, north of Shasta Street; Packet Pg. 790 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic))

19. Pine Street, on the west side, from Eureka Way to Trinity Street;

20. Sacramento Street, on the north side, between Court Street and Railroad Avenue;

21. Sacramento Street, on the south side, between Oregon Street and Railroad Avenue;

22. Sacramento Street, on the north side, from East Street to Center Street;

23. Sacramento Street, on the south and north sides, between California Street and Pine Street;

24. Sacramento Street, on the south side, between West Street and Oregon Street;

25. South Street, on the north side, from West Street easterly for one hundred ninety feet;

26. Tehama Street, on the north and south sides, between West Street and UPRR tracks;

27. West Street, on the east side, between Placer Street and South Street;

28. Yuba Street, on both sides, between West Street and Court Street;

29. Yuba Street, on the north and south sides, between Court Street and Oregon Street;

30. Yuba Street, on the north side, between California Street and Court Street;

31. Yuba Street, on the north side, between East Street to the Market-Pine alley;

32. Yuba Street, on the south side, between Pine Street and the Pine-East Alley.

B. The City Engineer shall have the pavement on all paved streets within the parking area whereon angle parking is authorized marked off with straight white lines running obliquely from the curb, and vehicles shall be parked between such lines. Where no pavement exists, vehicles shall be parked as closely as possible to the edge of the roadway at an angle of approximately forty-five degrees.

C. Pursuant to California Vehicle Code section 22503, the City Council may, by ordinance, designate additional streets whereon angle parking is authorized.

D. It is unlawful for the operator of any vehicle to:

1. Park a vehicle in such a manner that interferes with vehicles traveling in the driving lane; or
Packet Pg. 791 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic))

2. Park a vehicle in any orientation other than at the angle to the curb or edge of the roadway indicated by signs or markings, or in any paid parking space in any orientation other than with the front of the vehicle closest to the curb, unless the space is expressly designated for “back in only” parking; or

3. Park with the front wheel nearest the curb further than six (6) inches of such curb.

Section 5. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.070 is amended to read as follows:

11.24.070 – Commercial vehicles/trailer in or adjacent to residential and unclassified districts.

A. Except as provided in subsection B of this section, no person shall park in any of the following places any commercial vehicle or trailer which has an unladen vehicle weight of ten thousand pounds or greater or is more than twenty-five feet in length:

1. In a residential district.

2. On or adjacent to any City right-of-way, street, alley, roadway, or highway that is adjacent to any residential district.

B. This section shall not apply to:

1. Commercial vehicles or trailers temporarily parked while actively unloading or loading persons or property, or when the commercial vehicle or trailer is temporarily parked in connection with, and in aid of, the performance of a service to or on a property in the block in which the commercial vehicle or trailer is parked.

2. A single tow truck or roll-back carrier when the operator of the tow truck or roilback carrier is on-call pursuant to a valid tow service agreement with a state or local agency and/or on-call for a twenty-four-hour tow service. This exemption for single tow trucks and roll-back carriers shall apply only to Class A and Class B vehicles, as those vehicles are defined by the City police department's most current tow service agreement.

C. For purposes of this section:

1. The term "residential district" shall be defined as any area that is zoned as a residential district or any area that is zoned as an unclassified district and is also classified by the Redding General Plan as residential.

2. The terms street, alley, roadway, highway, commercial vehicle, truck tractor, trailer, utility trailer, semitrailer, tow truck, roll-back carrier, auto-dismantler's tow vehicle, and bus shall be defined as those terms are defined in the California Vehicle Code.

Packet Pg. 792 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic))

3. Commercial vehicles shall include, without limitation, the following:
a. A vehicle which was originally designed and manufactured primarily for commercial purposes, whether or not the vehicle is currently used for commercial purposes.
b. A truck tractor whether or not other vehicles, trailers, or other wheeled loads are attached.
c. A dump truck or boom truck.
d. A tow truck, roll-back carrier, or auto-dismantler's tow vehicle. e. A bus, including a school bus, general public paratransit vehicle, farm labor vehicle, or youth bus.

4. Commercial vehicles shall not include any vehicle owned by a public utility or a licensed contractor while necessarily in use in the construction, installation, or repair of any public utility or public utility property.

5. Commercial trailers shall include, without limitation, the following:
a. A trailer or semitrailer which was originally designed and manufactured primarily for commercial purposes, whether or not the trailer or semitrailer is currently used for commercial purposes.
b. A trailer or semitrailer, whether or not the wheels are attached, primarily used or maintained for the transportation of people or property for hire, compensation, or profit.
c. A trailer or semitrailer, whether or not the wheels are attached, designed, used, or maintained primarily for the transportation of people or property not primarily the personal property of the owner.
d. A roofing asphalt kettle used to process, heat, or hold roofing materials for heating, whether or not attached to a vehicle or trailer regardless of weight or length.

6. Commercial trailers shall not include the following:
a. Utility trailers.
b. Any trailer owned by a public utility or a licensed contractor while necessarily in use in the construction, installation, or repair of any public utility or public-utility property.

Packet Pg. 793 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic)) D. A fine of seventy-five (75) dollars is established for vehicles or trailers in violation of this section.

Section 6. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.080 is amended to read as follows:

11.24.080 – Passenger loading zones.

In addition to loading zones established in this chapter, the City Council may from time to time designate by resolution special passenger loading zones, and it is unlawful for the operator of any vehicle to park in such a passenger loading zone or to stop his vehicle for a longer time than is necessary for the active loading or unloading of passengers, which time shall not be more than three (3) minutes' duration.

Section 7. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.090 (Bus Loading Zones – Designated) is repealed.

Section 8. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.100 (Bus Loading Zones – Marking) is repealed.

Section 9. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.110 (Bus Loading Zones – Parking Prohibited) is repealed.

Section 10. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.120 is amended to read as follows:

11.24.120 – Loading Zones – Designated.

A. The City Council may, by resolution, designate any of the streets, or portions thereof as loading zones for such days and periods of time as deemed necessary. It is unlawful for the operator of a vehicle to stop his vehicle for a longer time than is necessary for the active loading or unloading of passengers or materials, which time shall not be more than three (3) minutes for active loading or unloading passengers, and not more than twenty (20) minutes for active loading or unloading materials. Loading zones shall be marked as required by California Vehicle Code section 21458.

B. Any vehicle that has not moved a distance of at least one hundred fifty (150) feet after the exceedance of the zone time limit shall be deemed to have remained stationary.

Section 11. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.130 (School Bus Loading Zones – Established) is repealed.

Section 12. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.140 is amended to read as follows:

Packet Pg. 794 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic))

11.24.140 – School bus loading zones – Marking.

The City Engineer shall cause the entire curb surface of school bus loading zones to be painted white, with the words "SCHOOL BUS LOADING ZONE” or other appropriate language in green letters thereon.

Section 13. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.150 is amended to read as follows:

11.24.150 – School bus loading zones – Regulations.

It is unlawful for any vehicle except a school bus to park or stand in any area marked as a school bus loading zone during the operating times designated by authorized signage or curb markings.

Appropriate signs showing the times when parking is allowed in the school bus zones shall be placed in the area or immediate vicinity of the area of the school bus zones.

Section 14. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.160 (Parking Near Hospitals) is repealed.

Section 15. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.170 is amended to read as follows:

11.24.170 – Time limited parking zones.

A. The City Council may, by resolution, establish time limited parking zones for such days and periods of time deemed necessary.

C. It is unlawful for any person to re-park a vehicle under their control or in their custody within the same block face or parking facility after the expiration of the maximum posted time limit. The vehicle may not return to the initial block face or parking facility sooner than two hours following the expiration of the initial time period.

Section 16. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.180 (Two Hour Parking Zones) is repealed.

Section 17. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.190 (One Hour Parking Zones) is repealed.

Section 18. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.200 (Forty-Five Minute Parking Zones) is repealed.

Packet Pg. 795 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic)) Section 19. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.210 (Thirty-Minute Parking Zones) is repealed.

Section 20. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.220 (Twelve-Minute Parking Zones) is repealed.

Section 21. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.230 is amended to read as follows:

11.24.230 – Parking and loading in alleys.

A. It is unlawful to park any vehicle in any of the alleys within the City, except as follows:

1. Where posted, vehicles may park in such alleys while actively loading and unloading only, for a period of time not to exceed fifteen minutes;

2. Where a temporary permit is obtained from the City Clerk, vehicles may temporarily park in such alleys for a longer period than fifteen minutes, as specified in the permit, for loading and unloading purposes;

3. At no time shall an alley be blocked so as to prevent the movement of traffic.

B. Loading zones shall be established pursuant to the provisions of Section 11.04.120, and the areas so established shall be designated on the traffic control map on file in the office of the City Clerk and designated by signage and/or curb markings.

Section 22. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.250 is amended to read as follows:

11.24.250 – Total consecutive hours time limit.

No person who owns, or has possession, custody or control of any vehicle, shall park his vehicle upon any street, alley, public highway or public property for more than a consecutive period of seventy-two (72) hours.

Section 23. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.260 is amended to read as follows:

11.24.260 – Private areas.

A. It is unlawful for the operator of any vehicle to park or stand his vehicle in any private parking area within the City, and which is situated on private property, without consent of the owner, manager, or lessee, provided the area is conspicuously posted against such parking with signs referring to the ordinance codified in this section and bearing the name and telephone number of the police department.

Packet Pg. 796 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic)) B. The police department shall require the notarized signature of the owner, manager, or lessee of the property, parking facility, or space on a "consent to enforcement" form, which shall be kept on file at the police department, and give to the City the authorization to enforce parking restrictions in parking facilities properly posted pursuant to Section 11.24.260 of this code.

Section 24. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.270 (Parking on Grades) is repealed.

Section 25. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.280 (Prohibited on Streets Authorized for Special Purpose) is repealed.

Section 26. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.290 (Special Privileges During Conventions) is repealed.

Section 27. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.300 is amended to read as follows:

11.24.300 – Parking for disabled persons.

A. Specific parking spaces, and such other places as the City Council may hereafter specify by resolution, are reserved for parking vehicles that display either a special identification license plate issued pursuant to California Vehicle Code section 5007 or a distinguishing placard issued pursuant to California Vehicle Code sections 22511.55 or 22511.59.

Such disabled persons shall be allowed to park in said spaces for unlimited periods of time without being required to pay any parking fees. As a condition to this privilege, the vehicle must display a distinguishing license plate which is issued by the California Department of Motor Vehicles to disabled persons upon application therefor.

B. When authorized signs and markings are in place giving notice of such special parking for disabled persons, no other person shall stop, stand or park a vehicle in the designated space for any length of time whatever.

Section 28. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.310 is amended to read as follows:

11.24.310 – Parking for disabled persons on private property.

Whenever a private parking facility of a commercial establishment is posted with notice of special parking for disabled persons, no nondisabled person shall stop, stand or park a vehicle in such designated space. A disabled person shall be allowed to use such space only when the vehicle he occupies displays the distinguishing license plate issued by the California Department of Motor Vehicles to disabled persons.

Packet Pg. 797 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic)) Section 29. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.320 (Parking for Law Enforcement and Fire Vehicles) is repealed.

Section 30. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.330 (Parking at the Redding Municipal Airport) is repealed.

Section 31. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.340 (Residential Parking Permit Areas – Purpose) is repealed.

Section 32. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.350 is amended to read as follows:

11.24.350 – Residential parking permit areas – Designation.

A. Pursuant to California Vehicle Code section 22507, the City Council may, by resolution, designate an area of the City as a residential parking permit area if the City Council finds that the area is predominantly residential, non -residential parking regularly interferes with the use of eighty-five percent (85%) of the available public street parking and that limiting the parking of vehicles along the streets in the area to vehicles registered to or controlled and exclusively used by persons residing in the area is necessary in order to enhance the quality of life of persons residing in the area. Residential parking permit areas are restricted to residential zones only and also are prohibited in any parcel with a mixed-use neighborhood overlay.

1. Residents of any residential area may petition to add or to remove areas from the City’s residential parking permit areas. Residents of the area must submit a general petition of interest to the City Clerk representing at least sixty-five percent (65%) of the residences and businesses of the area in support of or in opposition of the addition or removal of the residential permit area.

2. Residents may submit a petition satisfying the requirements of subdivision (A)(1) to request adding or removing a street segment to an existing program area. These petitions must be submitted to the City Clerk. Residents of the proposed streets segment will be given at least thirty (30) calendar days’ notice prior to implementation of the preferential parking program.

B. The resolution designating an area of the City as a residential permit parking area shall describe the designated area along which parking will be limited to vehicles registered to or controlled and exclusively used by persons residing in the area.

Section 33. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.360 is added to read as follows:

Packet Pg. 798 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic))

11.24.360 – Residential parking permit – Fees.

The annual fee and renewal fee for residential parking permits shall be established by resolution of the City Council.

Section 34. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.370 is added to read as follows:

11.24.370 – Residential parking permit area – Disestablishment.

A residential parking area may be disestablished by resolution of the City Council.

Section 35. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.24.380 is added to read as follows:

11.24.380 – Penalties, liability and enforcement.

A. The following acts shall constitute fraudulent use of a permit punishable as a misdemeanor and by a fine to be established by resolution of the City Council and/or may result in revocation of any permit currently held:

1. Falsely representing oneself as eligible for a parking permit or furnishing false information in an application therefore.

2. Knowingly committing any act that is prohibited by the terms of this Chapter or any ordinance or resolution enacted by authority granted by this Chapter.

Section 36. Title 11 (Vehicles and Traffic), Chapter 11.28 (Parking Meters) is hereby renamed and re-titled to be Chapter 11.28 (Paid Parking Devices).

Section 37. Title 11 (Vehicles and Traffic), Chapter 11.28 (Paid Parking Devices), Section 11.28.010 is amended to read as follows:

11.28.010 – Definitions.

Wherever, in this Chapter, a phrase or term that has been defined in Section 11.24.010 appears, it shall have the same meaning as that set forth in Section 11.24.010.

Section 38. Title 11 (Vehicles and Traffic), Chapter 11.28 (Paid Parking Devices), Section 11.28.020 is amended to read as follows:

11.28.020 – Paid parking zone designated.

The City Council may, as traffic conditions require, designate by resolution paid parking zones upon such streets or portions of streets of the City as are selected for the location of paid parking zones. The City Council may modify or eliminate paid parking zones. The areas, streets and Packet Pg. 799 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic)) portions of streets designated as paid parking zones shall be depicted on the traffic control map adopted pursuant to Section 11.04.020 and on file in the office of the City Clerk.

Section 39. Title 11 (Vehicles and Traffic), Chapter 11.28 (Paid Parking Devices), Section 11.28.030 is amended to read as follows:

11.28.030 – Parking space marking.

The City Engineer is directed and authorized to mark off individual parking spaces in the parking zones designated in Section 11.28.020 and in such other zones as may hereafter be established.

Such parking spaces shall be designated and described by lines painted or durably marked on the curbing or surface of the street, by signage or by paid parking device.

Section 40. Title 11 (Vehicles and Traffic), Chapter 11.28 (Paid Parking Devices), Section 11.28.040 is amended to read as follows:

11.28.040 – Installation.

The City Engineer, or his/her designee, shall cause paid parking devices to be installed and shall cause paid parking spaces to be designated within paid parking zones, as hereinafter provided. The City Engineer, or his/her designee, shall be responsible for the regulation, control, operation, maintenance and use of such paid parking devices. Each device shall provide indication to the operator of the vehicle that a legal parking period has begun upon the deposit of the appropriate City-authorized form of payment for the period of time designated by signage. When a lawful time limit, it will indicate by a proper visible signal that the lawful parking period has expired and in such cases the right of the vehicle to occupy the space ceases and the operator, owner, possessor or manager thereof is guilty of an infraction and subject to fine, immobilization , or impoundment.

Section 41. Title 11 (Vehicles and Traffic), Chapter 11.28 (Paid Parking Devices), Section 11.28.050 is amended to read as follows:

11.28.050 - Operation.

Whenever any vehicle shall be parked in any space that requires payment within a paid parking zone, as indicated on posted signage and/or paid parking device, during the established payment hours, the owner, operator, manager or driver of said vehicle shall, upon entering said space, immediately initiate a paid parking session through a designed and City-approved payment method.

Section 42. Title 11 (Vehicles and Traffic), Chapter 11.28 (Paid Parking Devices), Section 11.28.060 is amended to read as follows:

11.28.060 – Time limits, charges, and hours of operation.

Rates, as they relate to paid parking devices and their hours, may be established from time-to-time by a resolution of the City Council.

Packet Pg. 800 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic)) Section 43. Title 11 (Vehicles and Traffic), Chapter 11.28 (Paid Parking Devices), Section 11.28.070 is amended to read as follows:

11.28.070 – Issuance of parking permits.

The City Engineer may issue parking permits for City-owned or city-operated parking facilities and streets on a weekly, monthly, or quarterly basis. The City Council may set forth, by resolution, the amount of parking permits issued and shall designate the specific parking facilities and streets to which parking permits are to apply. Parking permit holders are to follow each parking facility’s regulations.

Section 44. Title 11 (Vehicles and Traffic), Chapter 11.28 (Paid Parking Devices), Section 11.28.075 (Employee Parking Permits) is added to read as follows:

11.28.075 – Employee parking permits.

A. The purpose of this section is to provide additional parking resources to employees working in the City’s downtown areas. Pursuant to California Vehicle Code section 22507(b), by resolution of the City Council, an employee parking permit program may be utilized to designate employee parking permit zones that will improve parking availability for customers if the use of the permits will not adversely impact parking conditions for residents and merchants in the area.

B. The City Manager, or his/her designee, may issue downtown employee parking permits with a term not to exceed one (1) year subject to the requirements set forth herein and any administrative rules or regulations which may be implemented to enforce this Chapter.

C. Employee parking permits can be obtained through the City Clerk. Persons obtaining permits must verify place of employment.

D. A vehicle which displays a valid downtown employee parking permit shall be permitted to stand or be parked in an employee permit parking zone for which the permit has been issued during the hours and times indicated on posted signage.

E. Employee parking zones will be indicated by authorized posted signage and through the City’s traffic control map adopted pursuant to Section 11.04.020, and on file with the City Clerk.

F. This section shall not be construed as providing any guarantee to a parking space nor shall it be construed as creating a property interest in any such permit.

Section 45. Title 11 (Vehicles and Traffic), Chapter 11.28 (Paid Parking Devices), Section 11.28.080 is amended to read as follows:

Packet Pg. 801 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic))

11.28.080 – Violations designated.

It is unlawful and a violation of the provisions of the chapter for any person to do the following:

A. To cause, allow, permit or suffer any vehicle operated by him to be parked overtime, or beyond the period of legal parking time established for any paid parking zone as described in this Chapter, or to make payment for the purpose of parking beyond the maximum legal parking time for the particular paid parking zone, except as provided in Sections 11.28.090 and 11.28.100.

B. To permit any vehicle to remain or to be placed in any parking space when the vehicle occupying the parking space has already been parking beyond the period prescribed for the parking space, except as provided in Sections 11.28.090.

C. To park any vehicle across any line or marking of a parking meter space or in such position that the vehicle is not entirely within the area designated by such lines or markings.

D. No personal shall tamper with or open any paid parking device, deposit or cause to be deposited in any parking payment device any slug, button, or any other device or substance as substitutes for legal tender of the United States, counterfeit or alter any parking receipt or tamper with a paid parking device to show payment during a time for which no payment was made.

E. No person shall cause, allow, or permit any vehicle to remain parked in any parking space that requires payment within a paid parking zone unless a paid parking session has been initiated or other approved method of payment made indicating that paid parking fees have been paid is displayed by the paid parking device.

Section 46. Title 11 (Vehicles and Traffic), Chapter 11.28 (Paid Parking Devices), Section 11.28.090 is amended to read as follows:

11.28.090 – Temporary parking permit program.

Any person within the paid parking zone may park his or her vehicle in violation of the provisions of subsections A and B of Section 11.28.080; provided, that such person has complied in every respect with the following regulations:

A. The temporary use is one of the following:

1. Any person carrying on any building construction, alteration, repair or addition.

2. Any person engaged in courthouse or jail related law enforcement transport activity.

3. Any person engaged by, or on behalf of, a public utility while conducting work on the utility.

Packet Pg. 802 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic)) B. The vehicle is being used at the time in performing the type of activity mentioned in this section in the immediate vicinity of the paid parking space occupied by the vehicle; C. An application shall be filed with the City Engineer. The application form is to provided by the City or accessible through the City’s website and shall include the name of the applicant, business address of the applicant, the nature of the business carried on by the applicant, and a statement explaining the applicant’s need to reserve parking spaces. The permit may be issued on an annual, semi-annual or quarterly basis at a rate to be determined by resolution of the City Council.

D. The applicant must request the reservation of “no-parking” signage at least seven (7) calendar days in advance of use. Such signs shall remain in place in place only during the existence of the temporary use, and the City shall cause such signs to be removed promptly thereafter.

E. Temporary signs must be posted at least seventy-two (72) hours prior the time of commencement of the authorized temporary use.

F. When signs authorized by this Section are in place, no person shall operate, park, or stand any vehicle contrary to the directions and provisions of such signs. Any such vehicle shall be subject to immobilization or impoundment.

Section 47. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.28.095 (Hood – Courthouse or Jail Related Law Enforcement Transport Activity) is repealed.

Section 48. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.28.100 (Hood – Utility) is repealed.

Section 49. Title 11 (Vehicles and Traffic), Chapter 11.24 (Stopping, Standing and Parking), Section 11.28.110 (Hood – Loss) is repealed.

Section 50. Title 11 (Vehicles and Traffic), Chapter 11.28 (Paid Parking Devices), Section 11.28.120 is amended to read as follows:

11.28.120 – Temporary Parking Permits – Revocation or Suspension.

A. The City Engineer may revoke or suspend any temporary parking permit or allowance of a temporary no parking zone for any of the following reasons:

1. When the circumstance or need under which the permit was granted no longer exists.

Packet Pg. 803 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic))

2. When the permittee ceases to carry any business license that may be required by the City as provided elsewhere in this code, or fails to pay the current business license fee due thereunder.

3. When the temporary no-parking signage is used to for a purpose other than the business purposes permitted by this Chapter.

4. When the temporary no-parking signage is not removed immediately upon completion of the work for which this Chapter permits.

5. When any person other than the permittee or his or its regular employees or agents is allowed to use the temporary no-parking signage.

6. In the event of a violation of Section 11.28.130.

B. In the event any temporary no-parking permit or allowance for a temporary no parking zone issued pursuant to this Chapter is revoked or suspended for a violation of this Chapter, the permittee shall immediately deliver the temporary no-parking signage to the office of the City Engineer upon receipt of notice of revocation or suspension by mail. The permittee may, in writing and no later than ten (10) calendar days after the date of mailing of the notice of revocation or suspension, request a hearing into the reason for the revocation or suspension by the City Engineer. The hearing shall be at such time and place as the City Engineer, or his/her designee, may designate. Unless the City Engineer, or his/her designee, after hearing, waives the revocation or modifies the time limit of any suspension, it shall remain in effect. No permittee shall be issued a new permit under the terms of this Chapter within one hundred eighty (180) calendar days of a revocation. The decision of the City Engineer shall be final and there shall be no right of appeal except as may be permitted by the California Code of Civil Procedure.

Section 51. Title 11 (Vehicles and Traffic), Chapter 11.28 (Paid Parking Devices), Section 11.28.130 is amended to read as follows:

11.28.130 –Violations.

It is unlawful and a violation of the provisions of this Chapter for:

A. Any person other than the permittee, his regular employees or agents to use any temporary no-parking signage issued pursuant to this Chapter.

B. Any person other than the permittee, his employees or agents or a member of the police department to remove any temporary no-parking signage.

C. Any person to use any contrivance, appliance, device or thing to cover the temporary noparking signage.

D. Any person, in any way, to tamper with, deface, mark on or injure any temporary noparking signage issued under the provisions of this Chapter.

Packet Pg. 804 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic)) Section 52. Title 11 (Vehicles and Traffic), Chapter 11.28 (Paid Parking Devices), Section 11.28.140 is amended to read as follows:

11.28.140 – Temporary street closures.

A. If the City Engineer, or his/her designee, determines that parking closure is necessary, then upon compliance by the applicant with the terms and conditions of the special event permit and any permit issued by the California Department of Transportation, the City Engineer, or his/her designee, in cooperation with the Chief of Police, or his/her designee, may temporarily prevent vehicular parking on all streets impacted by the permitted special event for such length of time as is deemed necessary for the safety and protection of persons who are to use that portion of the street(s) during the special event.

B. If the City Engineer, or his/her designee, determines that parking closure is necessary, then at least five (5) business days prior to the special event, the City Engineer, or his/her designee, shall provide notice of the closure to owners and/or tenants of property located on the street that is to be closed. The City Engineer, or his/her designee, shall determine the appropriate form of notice required to be given under this Section. The City Engineer, or his/her designee, may require that the organizer of the special event provide the notice required to be given under this Section. Notwithstanding the preceding, failure to provide the notice set forth herein shall not be cause to delay or cancel any special event otherwise permitted pursuant to the Municipal Code.

Section 53. Title 11 (Vehicles and Traffic), Chapter 11.28 (Paid Parking Devices), Section 11.28.150 is amended to read as follows:

11.28.150 - Enforcement.

The City Manager and Chief of Police are hereby authorized to designate regularly employed and salaried employees of the City for parking enforcement of the provisions of this Chapter.

Section 54. Severability. If any section, subsection, subdivision, paragraph, sentence, clause or phrase of this Ordinance, or its application to any person or circumstance, is for any reason held to be invalid or unenforceable, such invalidity or unenforceability shall not affect the validity or enforceability of the remaining sections, subsections, subdivisions, paragraphs, sentences, clauses or phrases of this Ordinance, or its application to any person or circumstance.

The City Council of the City of Redding hereby declares that it would have adopted each section, subsection subdivision paragraph, sentence, clause or phrase hereof, irrespective of the fact that any one or more other sections, subsections subdivisions paragraphs, sentences, clauses or phrases hereof be declared invalid or unenforceable.

Section 55. The City of Redding finds that this Ordinance is not a “project” according to the definition set forth in the California Environmental Quality Act (“CEQA”), and, pursuant to CEQA Guidelines sections 15060(c)(2) (the activity will not result in a direct or reasonably foreseeable indirect physical change in the environment) and 15061(b)(3) (there is no possibility Packet Pg. 805 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic)) the activity in question may have a significant effect on the environment), the adoption of this ordinance is therefore not subject to the provisions requiring environmental review. This ordinance establishes changes in administration in parking and will have no effect on traffic volume or any result impact to the environment resulting therefrom.

I HEREBY CERTIFY that the foregoing ordinance was introduced and read by the City Council of the City of Redding at a regular meeting on the 21st day of June, 2022, and was duly read and adopted at a regular meeting on the ____ day of ___________, 2022, by the following vote:

AYES: COUNCIL MEMBERS:

NOES: COUNCIL MEMBERS:

ABSENT: COUNCIL MEMBERS:

ABSTAIN: COUNCIL MEMBERS:

_________________________________
KRISTEN SCHREDER, Mayor
ATTEST: FORM APPROVED:
_____________________________ _________________________________ PAMELA MIZE, City Clerk BARRY E. DeWALT, City Attorney
Packet Pg. 806 Attachment: ^Clean Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic))

STRIKEOUT ORDINANCE
OLD LANGUAGE: STRUCK OUT
NEW LANGUAGE: UNDERLINE
AN ORDINANCE OF THE CITY OF REDDING AMENDING TITLE 11
(VEHICLES AND TRAFFIC), CHAPTER 11.04 (TRAFFIC
REGULATIONS GENERALLY) BY AMENDING SECTIONS 11.04.010
(DEFINITIONS), 11.04.040 (WHEN VEHICLES TO BE REMOVED FROM

11.28.040 (INSTALLATION), 11.28.050 (OPERATION), 11.28.060 (TIME Packet Pg. 807 Attachment: ^Strikeout Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic)) LIMITS, CHARGES AND HOURS OF OPERATION), 11.28.070 (RENTING IN CITY LOTS), 11.28.080 (VIOLATIONS DESIGNATED), 11.28.090 (HOOD – CONSTRUCTION), 11.28.120 (HOOD – REVOCATION),

11.28.130 (HOOD – VIOLATIONS), 11.28.140 (HOOD – REVOCATION HEARING), AND 11.28.150 (PARKING METER ZONE TIME LIMITS DESIGNATED), AND REPEALING SECTIONS 11.28.095 (HOOD –

RELATING TO THE REGULATION OF VEHICLE PARKING

11.04.010 – Definitions.

A. Whenever in this title the following terms are used, they shall have the meanings respectively ascribed to them that are set forth in the California Vehicle Code:

1. Alley;

2. Business district;

3. Crosswalk;

4. Driveway;

5. Intersection;

6. Loading zone;

7. Operator;

8. Park;

9. Parking area;

10. Roadway;

11. Safety zone;

12. Sidewalk;

13. Street;

14. Traffic;

15. Vehicle.

Packet Pg. 808 Attachment: ^Strikeout Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic)) B. Whenever in this title the following term is used, it shall have the meaning respectively ascribed to it in this Chapter section:

2. “Block face” means the block in which the vehicle is parked, bordered by an intersection at each end.

3. “Digital parking permit” means a non-physical parking permit that is associated with at least one vehicle’s license plate number.

8. “Parking facility” means the area set aside for the storage and parking of vehicles including parking lots and garages.

9. “Parking space” means a space in a parking facility or in a public right-of-way, street, alley, or roadway that is designed for the leaving of a vehicle.

10. “School bus” means a bus that transports students from home to school, school to home, or to school-sponsored events.

12. "Traffic control map" means the traffic control map adopted by the City Council and maintained on file in the office of the City Clerk and all notations and Packet Pg. 809 Attachment: ^Strikeout Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic)) information set forth thereon pertaining to the regulation and control of traffic in the City.

11.04.040 – When vehicles to be removed from streets, of from any off-street parking facility owned or operated by the City. Vehicle removal from public streets and spaces.

A. Pursuant to California Vehicle Code section 22651, peace officers and regularly employed and salaried employees engaged in directing traffic or enforcing parking laws may remove or cause to be removed the following: Any regularly employed and salaried officer of the police department of the city may remove or cause to be removed the following:

1. Any vehicle that has been parked or left standing on a street or alley for more than a consecutive period of one hundred twenty seventy-two (72) hours;

3. Any vehicle which is parked or left standing in any off-street parking facility owned or operated by the City for more than seventy-two (72) consecutive hours thirty consecutive days, provided that conspicuously-placed signs giving notice that vehicles may be removed are erected at least thirty days prior to the implementation of this provision.

B. Removal of any such vehicle shall be to a garage designated by the chief of police and shall be in accordance with the requirements of the California Vehicle Code section 22651.

11.24.010 – In front of place of assembly.

Except when it is actually actively loading or unloading, it is unlawful to stand or park any vehicle immediately in front of the corridor, passageway, exit or door of any theater, school, church or other place of public assembly, during such times as people are assembled therein.

11.24.060 – Angle parking.

A. Pursuant to California Vehicle Code section 22503, Aangle parking is authorized on the following streets:

1. Arboretum Drive, on the north side;

2. Butte Street, on both sides, between West Street and Oregon Street;

3. Butte Street, on the north side, west from the Market-Pine alley to Pine Street; Packet Pg. 810 Attachment: ^Strikeout Ordinance (9.11(h)--Ordinance amending RMC Title 11 (Vehicles and Traffic))

4. Butte Street, on the north and south sides, between Pine Street and East Street;

5. Center Street, on both sides, between Shasta Street and Division Street;

6. Center Street, on the east side, from one hundred thirty feet south of the south curbline of Placer Street to Sacramento Street;

7. Civic Center Drive, on the east side;

8. Division Street, on the north side of the westerly half, between California Street and Center Street;

9. Eureka Way, on the north side, between East Street and Pine Street.