750 Phelps Street Sa n Francisco , CA 94124 Water Sewer T 415.920-4944 Services of the San Francisco Public Utilities Commission February 1, 2018

Ms. Jessica Watkins Regional Water Quality Control Board NPDES/CA 0037664 Region 2017 Annual Report 1515 Clay Street, Suite 1400 Oakland CA 94612

RE: Southeast Water Pollution Control Plant and Bayside Wet Weather Facilities 2017 Annual Self-Monitoring Report

Dear Jessica:

Transmitted herewith is the annual self-monitoring report for the Southeast Water Pollution Control Plant (WPCP), the North Point Wet Weather Facility (WWF), and Bayside Wet Weather Facilities and Wastewater Collection System for the calendar year 2017, pursuant to Order No. R2-2013-0029, NPDES Permit No. CA0037664 (Southeast WPCP NPDES Permit).

A. TREATMENT PLANT COMPLIANCE AND PERFORMANCE

1. Volume Treated

The Southeast WPCP treated a total of 25.41 billion gallons of combined sanitary, industrial, and storm water in 2017 while the North Point Wet Weather Facility treated a total of 1.34 billion gallons t of combined sanitary, industrial and storm water. The average dry weather flow for the Southeast WPCP was 51.41 million gallons per day (MGD), calculated using flows from three consecutive dry weather months (July, August, and September).

2. Combi.ned Sewer Discharges

The following table shows the frequency of combined sewer discharges (CSDs) during 2017. A complete wet weather annual report covering the wet weather season from July 2017 through June 2018 will be submitted in July 2018 and will Mork Ferrell Mayo1 include all the wet weather events for that period. Ike Kwon P1es1de111

Vince Courtney Vice P1cs1de111 Ann Moller Coen Comm1ss1one1 Francesca Vietor Commissioner Anson Moran Comm1ss1aner 1 In July, the North Point Wet Weather Facility (NPF) used its storage tanks to hold l.32 million Harlan L Kelly, J r. gallons of now during a SEP shutdown event. This now was eventually sent to SEP for General Manager treatment, not discharged at NPF, so this amount was not included in the NPF treated total.

OUR MISSION: To provide our customers with high-quality, efficient and reliable water, power and sewer services In a manner lhat values envlronmenlal and community interests and sustains the resources entrusted to our care. Southeast WPCP 2017 Annual Sclr-Monitoring Report February l , 2018 Page 2 or 11

2017Com b" me dS ewer D"1sc h arge F~ requency Month Total Ji F M A M J J A s 0 N D North Shore Basin 3 3 I 1 0 0 0 0 0 0 I 0 9 Central Basin 5 4 2 I 0 0 0 0 0 0 I 0 13 Southeast Basin 2 0 0 0 0 0 0 0 0 0 0 0 2

3. Discussion of Treatment Plant Performance and Compliance

Summary of Plant Performance The San Francisco Public Utilities Commission (SFPUC) is exempt from submittal o f an annual compliance summary table and tabular and graphical summaries of monitoring data because all data for the Southeast WPCP are reported electronically. See Southeast WPCP NPDES Permit, Monitoring and Reporting Program (MRP), Attachment Eat E-I 7 and Regional Standard Provisions, and Monitoring and Reporting Requirements (Supplement to Attachment D, Attachment G (20 I 0) at G-18.

Consistent with the Waste Discharge Requirements for Mercury and PCBs fro m Municipal and Industrial Wastewater Discharges to San Francisco Bay (Order No. R2-2012-0096, NPDES No. CA0038849), Attachment A summarizes the mercury concentrations of each final effluent sample coll ected in 20 I 7, the corresponding fl ow on the dates the sample was collected, and the annual estimated mercury load. The Southeast Plant reported USEPA Method l 668c PCB congener data with the Self- Monitoring Reports for March 201 7, May 201 7, August 201 7, and November 2017.

Discussion of Compliance

On January 8, 2017, recreational areas in the North Shore were not sampled or posted due to different initial staff evaluations about whe tJ1er a discharge had occurred (a discharge occurred but the data which confirmed that was not available al the time). On-call staff responsible for sampling and posting beaches now receive automatically generated notificati ons when transport/storage boxes reach levels al whi ch a CSD could occur and proactively sample and post based on those notifications.

On January 10, 201 7 at approximately 7: I 0 p.m., while there was a discharge occurring al CSD-029 (Mariposa), the Mariposa Pump Station lost power for fifteen minutes due to PG&E outage. Power was restored fo urteen minutes later al 7:24 p.m. During this power outage, 0.1 MG was discharged at CSD- 029.

During the rain storm on January 20, 201 7, at approximately 4:20 a.m., a HDPE pipe split lengthwise came into the plant and jammed the bar screen at North Point Wet Weather fac ility, which prevented the facility from achieving influent flow levels of 135-150 MOD within 60 minutes of discharge from CSD-013 (Beach) and CSD-017 (Jackson). The HDPE pipe

~The January SMR cover feller listed 4 CSDs forihe North Shore Basin and 4 for the Central Basin; the correct count is 3 CSDs for Lhc North Shore Basin and 5 for tJ1e Central Basin. Southeast WPCP 2017 Annual Self-Monitoring Report February I , 2018 Page 3of1 I was removed and the bar screen restored to service approximately 120 minutes later. The total volume of North Shore basin discharges (CSD-009 Baker; CSD-010 Pierce; CSD-013 Beach; CSD-015 Sansome; and CSD-017 Jackson) during this time was 6.4 MG.

Also during the rain storm of January 20, 2017, Griffith Pump Station did not reach 125 MOD for approximately 3 hours while discharging at CSD-040 (Griffith), CSD-041 (Yosemite), and CSD-042 (Fitch) due to an electric duct buss failure which caused the loss of one pump. This event resulted in approximately 0.3 MG of additional CSD volume to be discharged in the Southeast basin at these CSD locations. However, as the system was at full capacity at this time, this volume would have been discharged as a CSD at lslais Creek basin had it been pumped from the Griffith Pump Station. Temporary cables have been installed at the pump station which enable operation, and the electric duct buss is in the process of being replaced with work expected to be completed in 2018.

In January, 2017, Oil & Grease exceeded the monthly average limit of 10 mg/Lat I I mg/L (there were no exceedances of the daily maximum (20mg/L) during the month).

On February 21, 2017, a discharge of fully treated effluent occurred due to a broken vent pipe located approximately five hundred feet from the diffuser discharge point at EFF 001. This event was reported to CalOES (Control# 17-1591) and staff submitted a 5-Day Report to the Regional Water Quality Control Board on February 28, 2017. Divers installed a new section and reconnected the pipe.

In March, 2017, Oil & Grease exceeded the monthly average limit of lOmg/L at 14mg/L (there were no exceedances of the daily maximum (20mg/L) during the month).

On April 4, 2017, SFPUC staff notified the CaJOES (#17-2581) of a leak under Pier 80 near the vent pipe for the Southeast Treatment Plant. A 5-Day Report regarding this event was submitted to the California Regional Water Quality Control Board on April 11, 2017. The SFPUC is in the process of replacing the entire vent pipe both buried and hung under the Pier 80 deck which is in the environmental review process. Currently the project is expected to be completed in 2018.

On April 12, 2017, SFPUC staff notified CalOES (#17-2765) of a leak from its final effluent outfall pipe from the Southeast Treatment Plant into Islais Creek. A 5-Day Report was submitted to the California Regional Water Quality Control Board on April 19, 2017. Divers installed a patch to repair the leak. A major capital project is underway to replace this section of the outfall pipe.

On October 11, 2017, due to a PG&E power interruption, approximately 41 ,700 gallons with the potential for a positive chlorine residual were discharged through the Pier 80 final effluent outfall (EFF 001 ). This event was reported to CalOES (#17-17423) and a 5-Day Report was submitted to the Regional Board on October 18, 2017. SouLheast WPCP 2017 Annual Self-MoniLorin g Report February I , 2018 Page 4 or 11

On OcLober 20, 20 17, due Lo a PG&E power outage, approximaLely 228,600 gall ons of final treated, disinfected and dechlorinated effluent was discharged through the Quint Street outfa ll to Tslais Creek (EFF 002). This event was reported to CalOES (Control # 17-17634) and a 5-Day Report was submitted to the Regional Board on October 27, 2017.

Test organi sm survival during the November 2017 acute fl ow-through bioassay was 50%. The combination of the May 20 17 and November 20 17 flow-through test results indicate that the I I-sample 90th percentile requiremenLfo r the SEP was not met. In addition, the I I-sample 90th percentile pem1it requirement was not meLin December 20 17 due to the acute fl ow-through test results from May, November and December 20 I 7. Accelerated testing and additional investi gations were initiated during December 2017.

4. Actions Taken or Planned to Improve Plant Performance & Reliability

The fo llowing capital projects are pl anned for, underway or recently completed for the Southeast WPCP, North Point Wet Weather Faci li ty and associated collection system: 2017 Capital Improvement Projects • Bruce Flynn Pump Station (BFS) Bar Screen Improvements: Mechanical components on the two bar screens were replaced, which included the chain-links, head shaft assemblies, wiper bar assemblies, and return rail and rake assemblies. In addition, the bar fields on the two existing screens were repaired and stru cturally reinforced in 2017. • Channel Pump Station (CHS) Bubbler Compressor Upgrade and Concrete Repair: Thi s project was to upgrade existing bubbler air compressor assembly at CHS and provide concrete repair at the Division Street Outfall (DVO; Discharge Point #026). Work was completed in October 2017. • Fixed Gas Monitoring System Upgrades: The project was to install fixed gas detectors and monitoring systems in va ri ous process buildings. Construction started in June 2014, and the construction work for SEP and BFS was completed in December 20 L5 . The Contract includes 3- year service and maintenance of the installed fixed gas systems at SEP and BFS, with expected completion in November 2018. • Wastewater Enterprise Distributed Control System (DCS) Upgrades Project: This project includes a 15-year Progressive Design-Build contract which was awarded to Emerson Process Management, Inc. in December 2016 with a notice to proceed (NTP) granted in March 2017. The scope of work includes fu ll replacement of an existing Foxboro DCS with an Emerson Ovation DCS at the SEP, including bayside pump stations, BFS and CHS. This contract also includes an option to perform the design of the DCS for the Oceanside Water Pollution Control Plant (OSP) and North Point Wet Weather Facility (NPF). The project is currently completing the pre-design phase and is entering into design activities which are scheduled to be completed during the fourth quarter

= Southeast WPCP 2017 Annual Self-Monitoring Report February I , 2018 Page 5 of 11

of 2018. Final completion of the Emerson Ovation DCS at SEP is estimated to be in the year 2023, with completion of the Sewer System Improvement Program's (SSIP's) Biosolids and Headworks projects. • Griffith Street Pump Station (GFS) Improvements Project (WW-651): This project is a complete station overhaul, including replacement of Dry Weather Pumps (5), Wet Weather Pumps (5), Ferric Chloride Storage and Distribution System, Electrical Controls and Distribution, station monitoring and communication systems, Bar Screens (2), Sump Dewatering Pump and piping, Influent Channel Gate activation systems, sections of the Dry Weather Pumps' discharge manifold, pumps' discharge check valves (OW/WW manifolds), force main pressure relief valves, station HVAC system, and lighting. In addition, an existing emergency generator will be overhauled. Work will begin in early 2018 and proceed through 2019. • Islais Creek Transport/Storage (T/S) System Flush Control Valves Upgrade: This project re-established the functionality of flush control valves at the Islais Creek Transport/Storage Box (JCT). Project received NTP March 2016, and the work was substantially complete December 2017; the final testing is targeted for summer 2018. • Mariposa Pump Station (MPS) Improvements Project (WW-667): This project is to completely rebuild MPS' Dry Weather Pumping Station to meet increased flow projections for the portion of collection system that serves MPS. Dry weather capacity under this project will increase station capacity from 1.7 MGD to a peak capacity of 5 MGD to meet demands following buildout of the Mission Bay area. The project scope includes demolition of the existing Dry Weather Pumping Station and construction of a new dry weather pumping station with new influent sewer routing as well as a larger (14") dry weather pump discharge force main (OW force main). During the construction period (2018-2020), dry weather sanitary flows will be diverted to MPS' Wet Weather Pumping Station and will be discharged through the 20-inch wet weather pump discharge force main (WW force main). The new dry weather pumping station will feature a new trench-style wet well, four (4) dry pit submersible pumps, dewatering pump, bypass piping to the existing 20- inch WW force main, fiber communications, and security upgrades. This project is scheduled for completion in 2021 . • North Point Outfall (NPO) Rehabilitation: The project was to repair reinforced concrete sewers; reline outfall pipes; remove and dispose of Bay sediments from inside, outside, and surrounding diffusers; install a corrosion protection system, and associated structural supports, for outfall pipes; and install an air release mechanism. The project received NTP in March 2017, and the expected completion is February 2018. • Selby and Marin Outfall Upgrades: This project is to provide pre-cast covers over existing outfall structures, including concrete repairs and baffle installation. The work at Marin Street Outfall (Discharge Point #032) has been completed. The pre-cast concrete covers for Selby Street Southeast WPCP 20 17 Annual Self-Monitoring Report February I, 2018 Page 6 or 11

Outfall (Di scharge Point #033) are slill curing and are targeted to be installed in May 2018. • Southeast Bay Outfall (SEO) Islais Creek Crossing Replacement: The project involves replacing the portion of the SEO that crosses Islais Creek (a.k.a., Islais Creek crossing; crossing, for short) immediately parallel to, and west of, the Third Street Bridge in San Francisco. The existing Islais Creek crossing is comprised of two duclile iron pipes (36- inch and 42-inch). A leak was observed and repaired in 20 I 7. The new Islais Creek crossing will consist of two new 54-inch outside diameter high density polyethylene (HDPE) buried pipes to replace the existing crossing section. New structures on each side of lslais Creek are proposed to tie the new pipes to the existing SEO system. The project will include actuated valves and pipes to divert flow between the new and existing systems as well as associated electrical and mechanical improvements. GHD/AGS, Joint Venture, was awarded the design support contract in May 2017. The project team is currently working on the 35% design submittal. Final completion of the project is scheduled for the year 2022. • SEP & BFS Fire Al arm Systems: This project which replaced and upgraded the existing deteriorated and outdated fire alarm systems at SEP and BFS to current codes and standards was completed in October 2016. Additionally, the project also provided audible and visible field notification devices in hi gh noise level process equipment areas and install missing fire alarm systems at modular buildings within SEP. The Contract includes 2-year service and maintenance of the installed fire alarm systems at SEP and BFS, with expected completion in November 201 8. • SEP Chemical System Relocation and Facility Upgrades (WW-556): The scope included replacing and relocating existing sodium hypochlorite storage tanks, pumping and piping systems; providing new mixers, for odor control and disinfection; and providing upgrades at the plant's headworks, primary treatment, and secondary treatment facilities to improve process control. Construction started in March 2014, and the construction work was completed in December 2017. • SEP 250 MGD New Headworks (WW-628): This project involves the construction of a new al l-weather 250 MGD head works facility, consisting of state-of-the-art influent pumping, screening, grit removal, and odor control technologies. The project will i.nclude demoli.tion of two existing antiquated headworks facilities and an existing influent lift station. The 250 MGD headworks facility will install coarse screens, fine screens with washer/compactor units, and high-efficiency grit removal units. The new odor control system will comprise of two-stage odor treatment in order to minimize odor impacts. The project will also improve visual aesthetics of associated facilities. The project i.s divided into three (3) Scopes: Site Preparation (Scope I) , Bruce Flynn Pump Station Improvements (Scope II), and Main Headworks (Scope III). NTP for Scope I construction activities was issued on 11 /15117, and Southeast WPCP 2017 Annual Self-Monitoring Report February I, 2018 Page 7 of 11

designs for Scope II and Scope Ill ~re ongoing. Final completion of the project is scheduled for June 2023. • SEP Primary and Secondary Clarifiers Upgrade (WW-626): The project objective is to improve reliability of the equipment and processes at SEP' s Primary and Secondary Clarifiers. The major scope of work includes (1) installation of a ventilation system for the primary sedimentation tanks for odor control plus (2) mechanical upgrades to and concrete coating of primary sedimentation tanks and several secondary clarifiers. Other mechanical and electrical works are also included. NTP was March 2016, and the construction work was more than 90% complete as of December 2017. • SEP 260 RAS Pump VFD Upgrade: Existing SEP 260 - Secondary Sludge Control Building's Return Activated Sludge (RAS) pumps' VFDs were upgraded, and RAS pump sensor status is now reported via the SEP's Distributed Control System (DCS). Project completion was in March 2017. • SEP Cryogenk Oxygen Plant Demolition and Liquid Oxygen System Upgrades (WW-599R): This project will demolish an existing cryogenic oxygen generation plant and liquid oxygen (LOX) storage tanks and vaporizers to install new LOX storage and vaporization systems and a gaseous oxygen (GOX) supply line. In addition, the project will provide a redundant air compressor and dryer for an existing Vacuum Pressure Swing Adsorption (VPSA) plant as well as eight (8) mass flow meters to allow improved process control. Project NTP was issued on 11/27/17. • SEP 521/522 Disinfection Upgrades (WW-613): The project objective is to upgrade the controls and chemical sampling station at SEP 521 - Postchlorination Building, relocate the electrical equipment into a new building (SEP 522 - Disinfection Electrical/HPU Structure), improve SEP's No. 3 Water system (process water), and replace valves and actuators. Concrete repair (to stop leaks) and coating of the chlorine contact channels (for corrosion protection) are also included. NTP was issued in March 2016, and the construction work was approximately 70% complete as of December 2017 . .• SEP Existing Digester Gas Handling Improvements (WW-632): The project consists of Process, Building Systems, Electrical, and Controls Upgrades. Process Upgrades address deficiencies related to digester gas compressors, heat exchangers and controllers; Combined Primary and Activated Sludge (CPAS) tank; boiler and boiler stacks; waste gas flares and cogeneration cooling water system; and biofuel tank. Building Systems Upgrades include replacing roof drains and upgrading ventilation. Electrical Upgrades are related to external lighting and installation of a fire alarm at the building at SEP 800, Controls Upgrades include installation of carbon monoxide gas monitors and replacing digester gas flow meters. NTP was issued in March 2017, and the construction work was approximately 50% complete as of December 2017. Southeast WPCP 2017 Annual Self-Monitoring Report February I , 2018 Page 8 of 11

• SEP Polymer System Improvements: Two (2) polymer transfer pumps with variable freque ncy drives were replaced, and one ( 1) storage tank dewatering pump and valves were provided to improve operational reliability and flexibility for thi s ancillary sludge dewatering process. The project was completed in November 2017.

5. Effiuent Characterization Study

For this evaluation, all constituents listed in Attachment G, Table C, except for those pollutants with effluent limitations, that were detected above the method Minimum Levels (ML) were evaluated. Estimated concentrations of constituents detected below the MLs were excluded from this evaluation because the uncertainty in the result when a constituent is detected below the ML prevents useful comparison.

Nine constituents were detected above the method MLs: Antimony, Cadmium, Chloroethane, Chloroform, Chromium III, Lead, Nickel, Toluene, and Zinc. The 2017 maximum detected level of each of the nine constituents was compared to the Maximum Effluent Concentration (MEC) as presented in Table F-9 of the Southeast Permit (Reasonable Potential Analysis). The MECs were used as the general indicators of past performance of the detected constituents.

All nine detected constituents showed decreases or no statistically significant changes or increases compared lo the corresponding MECs.

The detected constituents and evaluations are summarized in the following table.

Trends for Selected Constituents Constituent Method 2017 Past Governing Comment Minimum Maximum Performance1 Criterion or Level (ML, Detected (µg/L) Objective µgfL) Level (ug/L) (ug/L) Antimony 0.5 0.737 0.71 4300 Increase Cadmium 0.25 0.68 1.3 9.36 Decrease

Chloroethane 0.5 0.5 13 11 No Criteria Decrease

Chloroform 0.5 7.13 11 No Criteria Decrease Chromium ill 0.5 0.968 3.7 No Criteria Decrease

Lead 0.5 1.5 1.6 8.5 Decrease Nickel I 4.24 5.1 13 Decrease Toluene 0.5 0.604 1.5 200,000 Decrease Zinc I 39.5 55 86 Decrease . . I The Maximum Effluent Concenlrauon (MEC) or lhc mm1mum de1ect1 on leve l, as llSled m Table F-9. Reasonable Potential Analysis in lhe SoULheast Permit, NPDES NO. CA0037664, Order No. R2-201 3-0029, is used as an indicator for pas! performance. Southeast WPCP 2017 Annual Self-Monitoring Report February 1, 2018 Page 9of11

6. Biosolids In 2017, the Southeast Treatment Plant beneficially re-used 11,641 dry metric tons of biosolids at the following locations:

Location Dry Metric Tons Land Application 3,773 Solano County Land Application 3,463 Sacramento County Land Application 310 Landfill Beneficial Use 6,895 Vasco Road 2,865 Potrero Hills 3,940 Altamont 90 Lystek - Liquid Biofertilizer 973 TOTAL 11,641

8. APPROVED LADORA TORY ANALYSES

See Attachment B for a list of analyses for which the SFPUC is certified.

List of Analyses Performed for the Discharger: • Dioxin, method EPA 1613, is performed by Frontier Analytical; and • Semi-volatile Organic Compounds, EPA 625, Caltest Analytical

List of Waived Analyses: None

C. FACILITY INFORMATION

1. Plan View Drawing or Map of Facility

See Attachment C.

2. Results of Annual Facility Inspection to Verify Stormwater Pollution Prevention Plan Elements

Southeast WPCP is exempt from this requirement because it routes all stormwater that falls on the facility property to the headworks of the treatment plant. See Southeast WPCP NPDES Permit, Regional Standard Provisions, and Monitoring and Reporting Requirements (Supplement to Attachment D), Attachment G (2010) at G-3.

3. Results of Annual Facility Report Reviews

Contingency Plan The Contingency Plan was updated in April 2017, and includes a finalized Spill Prevention Plan.

Operations and Maintenance Manual The Chief Operations Manual and the Operations Wet Weather Manual were updated in October 2017. Southeast WPCP 2017 Annual Sci f"-Monitoring Report February I, 201 8 Page 10 of 11

Wastewater Facilities Status Report San Francisco is implementing a Wastewater Asset Management Program to enhance re liability of the plant process equipment and optimize its maintenance and operati ons activities by assessing the criticality of the equipment based on which equipment carries the most risk. Based on the risk or the equipment, the appropriate Mainte nance, and Repair and Rehabilitation (R&R) Program strategy can enhance plant reliability. Under the process being implemented, the highest risk equipment will have the more rigorous maintenance procedures including Routine and Preventive Maintenance, Condition-based Mainte nance, and Reliability­ Centered Maintenance. The R&R Program sets priorities based on the highest risk equipment, and the equipment at the end of its useful life. San Francisco uses a CMMS (Computerized Maintenance Management Software) to plan, schedule, initiate and track preventive and corrective work, and record equipment condition assessments.

D. COLLECTION SYSTEM FATS, OILS AND GREASE (FOG) UPDATE Launched in 2007, the SFGreasecycle program aims to minimize the amount of FOG discharged to the sewer system by providing a free waste grease pickup service for commercial establishments and free drop-off services for residents. The program was developed to address both source control, through collection services and public outreach, and end use, through the production of biodiesel from waste grease. To date, SFGreasecycle has coll ected approximately 2.9 million gall ons of waste grease from over 1,000 participating food service establishments and 7 residential drop-off points located throughout San Francisco. Since 2007, the program has generated over $4.7 million in revenue for San Francisco and is expected to reduce the annual costs expended on grease related sewer blockages by sewer operations maintenance crews.

The Food Service Establishments (FSE) currently participating in the program represent approximately 35% of the total number of FSEs in San Francisco. The annual grease collected from commercial FSEs began at 6,000 gallons in 2007, grew to 300,000 gallons in 2011 , and has remained steady since. The residential recycling program component has focused on resident outreach and education and now coll ects over 11 ,000 gallons a year from 7 convenient drop-off sites located throughout San Francisco at such retail vendors as Whole Foods Market and Costco.

E . PARTICIPATION IN REGIONAL EFFORTS In 2017, the SFPUC continued its financial support of and participation in the San Francisco Estuary Jnstitute's Regional Monitoring Program in order to fulfill the receiving water monitoring requirements of the Southeast WPCP NPDES permit. See Southeast WPCP NPDES Permit at E- 12.

As a principal member of the Bay Area Clean Water Agencies, the SFPUC also continued to support nutrient receiving water monitoring and sc ience plan development and implementation; participate in the development of Total Maximum Daily Loads and site-specific objectives; support imple mentation of the Mercury and PCBs Watershed Permit; and support implementation of the regional copper action plans. Southeast WPCP 2017 Annual Self-Monitoring Report February I , 2018 Page 11 of 11

If you have any questions concerning this report, please contact one of the following people: Superintendent, Mark Harris, at 415-920-4923; Laboratory Services Manager Kenneth Lee, at 415-920-4965 or Supervising Chemist, Dolson Kwan, at 415-920-4957.

I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based 011 my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best ofmy knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility offine and imprisonment for knowing violations.

Sincerely,

Andrew Clark, Superintendent SFPUC Wastewater Enterprise/Southeast WPCP

ATTACHMENTS Attachment A 2017 Mercury Sampling Results Attachment B List of Analyses for which the SFPUC is Certified Attachment C Plant Flow Diagram ATTACHMENT A

Mercury Information Reporting Form

Discharger: City and County of San Francisco, Southeast WW Treatment Plant

Calendar Year Reporting: 2017 Monitoring Station: E-001

Effluent Flow to Average Monthly Total Mercury Month Sample Date Surface Waters Mass Load Concentration (µg/L) (mgd) (kg/mo) January 1/27/17 89.20 0.0089 0.0919 February 2/15/17 68.00 0.0043 0.0338 March 3/2/17 65.00 0.0039 0.0293 April 4/4/17 59.60 0.0022 0.0154 May 5/16/17 54.90 0.0028 0.0177 June 6/13/17 58.90 0.0016 0.0108 July 7/18/17 56.60 0.0032 0.0210 August 8/8/17 55.50 0.0024 0.0155 September 9/26/17 57.50 0.0031 0.0207 October 10/24/17 56.60 0.0037 0.0240 November 11/14/17 58.90 0.0029 0.0198 December 12/27/17 53.80 0.0019 0.0120 Total Mass (sum) 0.3120 Weighted Annual Mass Emission 0.3120 Average 0.0034 0.0260 ATTACHMENT B

References for Analyses

Type of Test Reference Method Number Ammonia Standard Methods 4500‐NH3 B,C 2019 (EPA‐821‐R‐02‐012) Bioassay EPA 600/R‐95/136 Development Test Biochemical Oxygen Demand Standard Methods 5210 B Carbonaceous BOD Standard Methods 5210 B Chemical Oxygen Demand Standard Methods 5220 D/HACH8000 Chlorine Residual Standard Methods 4500‐Cl C Coliform Standard Methods 9221 B Conductivity Standard Methods 2510 B Cyanide Standard Methods 4500‐CN‐ C & 4500‐CN‐ E Enterococci, IDEXX EPA Enterolert Kjeldahl Nitrogen Standard Methods 4500‐NH3 C Mercury EPA 1631E/245.1 Metals EPA 200.7/200.8 Nitrate‐nitrite Standard Methods 4500‐NO3‐ E Nitrite Standard Methods 4500‐NO2‐ B Oil & Grease EPA 1664A PAH EPA 625 Pesticide/PCBs EPA 608 pH EPA/Standard Methods 150.2/4500‐H+ B Phosphate, Ortho Standard Methods SM4500‐P E Phosphorus, Total EPA 200.7/HACH8190 Semi ‐Volatile Organic Compounds EPA 625 Settleable Solids Standard Methods 2540 F Temperature Standard Methods 2550 B Total Solids Standard Methods 2540 B Total Suspended Solids Standard Methods 2540 D Turbidity Standard Methods 2130 B Volatile Organic Compounds EPA 624

Revised 1/8/2018 ATTACHMENT C Plant Flow Diagram Southeast Water Pollution Control Plant

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DIG ESTERS lldg 040 I GROUP 2 11 I \ I ..... lldg 041

CPAS • Corrtined Prlrruy lie Secondary Sludge RAS Raum AcfMJled Sludge ...... ~-----~~----~ DG • llgester Gas SB • Secondary 1ttpcm -----~------PRIMARY IJSI~ S'1SIDI OS llgeshld Sludge SE • Secondary Effli.nt lldg 525 PE • Prlrrary Effluent SI • Secondary lntturi PI • Prtm1ry lnffluent SSM/DEW Secondary ~ SOUTHEAST WPCP PS • Prtm1ry Sludge TAS • 1Wclcened Adi¥aled Sludge ..... PR • Plant Rlcyde Tur 1Wclcened lhlerflow PROCESS SCHEMATIC PPR •P~ l'l