ENVIRONMENTAL & ENGINEERING SERVICES DEPARTMENT

Transcription

1 CITY OF LONDON ENVIRONMENTAL & ENGINEERING SERVICES DEPARTMENT WASTEWATER TREATMENT OPERATIONS VAUXHALL WASTEWATER TREATMENT PLANT 2013 ANNUAL REPORT FEBRUARY 2014

2 Vauxhall Wastewater Treatment Plant 2013 Annual Report February 2014 SUMMARY This annual report is in response to requirements under Certificate of Approval for Vauxhall BHVK issued July 21, a) A summary and interpretation of all monitoring data and a comparison to the effluent limits outlined in Condition 7, including an overview of the success and adequacy of the works; The monthly average concentrations and loading compliance criteria for BOD, phosphorous and suspended solids were achieved in The monthly average un-ionized ammonia compliance concentration criteria were also achieved in The monthly average data is in Table 1 of the report. The annual average daily flow of ML/day was less than the Certificate of Approval limit of 20.7 ML/day. The rainfall in 2013 was 1,075 mm which is higher than the average (975 mm) for the period 1986 to The goals of a Pollution Prevention and Control Plan (PPCP) are to outline the nature, cause and extent of pollution problems, examine alternatives and propose remedial measures for reducing and mitigating pollution from sewer overflows and then recommend an implementation program for achieving those goals. The City of London has contracted engineering consulting firm CH2M HILL Canada Limited to develop the plan through a detailed analysis of the impacts of rainfall events on our existing sewer systems and the Thames River. The operation s staff was successful in meeting all the compliance criteria and the Works are adequate. b) A description of any operating problems encountered and corrective actions taken; The Chemically Enhances Primary Treatment (CEPT) commissioning was started in High flows are needed to test the system. c) A summary of all maintenance carried out on any major structure, equipment, apparatus, mechanism or thing forming part of the Works; A Work Order list for the Vauxhall Wastewater Treatment Plant is attached. d) A summary of any effluent quality assurance or control measures undertaken in the reporting period; A Plant and effluent monitoring program was conducted and the data is in tables of this report. Samples were obtained as required in the Certificate of Approval. e) A summary of the calibration and maintenance carried out on all effluent monitoring Page 1 of 71

3 equipment; Attached in appendix. f) A description of efforts made and results achieved in meeting the Effluent Objectives of Condition 6; The monthly average concentration objectives were achieved 100% of the time for BOD, suspended solids, un-ionized ammonia and E. Coli in Samples for ph in 2013 were between 7.3 and 8.0 which were within the objective range of 6.5 to 9.0. g) A tabulation of the volume of sludge generated in the reporting period, an outline of anticipated volumes to be generated in the next reporting period and a summary of the locations to where the sludge was disposed; The volume of sludge hauled from Vauxhall in 2013 was 27,272 cubic metres with average solids content of 4.4%. Details are in the table Sludge Summary included in the report. We anticipate in 2014 that a similar volume of sludge will be generated as in The sludge was hauled in 2013 to the Greenway Incinerator facility and anticipate in 2014 we will continue to haul sludge to Greenway for incineration or treated with the Bioset process and disposed at the W12A landfill. h) A summary of any complaints received during the reporting period and any steps taken to address the complaints; There were no odour complaints in i) A summary of all By-pass, spill or abnormal discharge events; There were 18 by-pass events with a total volume of 24,398 cubic metres of raw sewage and 21,222 cubic metres of primary treated sewage (secondary treatment bypass). The raw bypass in 2013 is equivalent to 0.42% of the sewage treated at Vauxhall. The by-passes are listed in the tables of the report. The rainfall in 2013 was 1,075 mm which is higher than the average (975 mm) for the period 1986 to Page 2 of 71

4 Vauxhall WWTP Aerial 2013 Page 3 of 71

5 TABLE 1 VAUXHALL 2013 MONTHLY AVERAGE SUMMARY DATE MONTHLY TOTAL BOD SUSPENDED SOLIDS EFFLUENT AMMONIA PHOSPHOROUS E. COLI AVERAGE FLOW RAW UV CHANNEL RAW UV CHANNEL DISSOLVED RAW UV CHANNEL MONTHLY TEMPERATURE (ML/D) (MG/L) KG/DAY ACTUAL LIMIT ACTUAL LIMIT (MG/L) ACTUAL LIMIT ACTUAL LIMIT OXYGEN ACTUAL UNIONIZED LIMIT (MG/L) ACTUAL LIMIT ACTUAL LIMIT GEOMETRIC MEAN (Celsius) (MG/L) (MG/L) KG/DAY KG/DAY (MG/L) (MG/L) KG/DAY KG/DAY (MG/L) (MG/L) KG/DAY (MG/L) (MG/L) (MG/L) (MG/L) KG/DAY KG/DAY (ORGS/100MLS) January , February , March , April , May , June , July , August , September , October , November , December , objective AVERAGE , Page 4 of 71

6 TABLE 2 VAUXHALL 2013 MONTHLY SAMPLE COUNT SUMMARY DATE TEMPERATURE BOD SUSPENDED SOLIDS ph AMMONIA TKN PHOSPHOROUS E. Coli ACTUAL UNIONIZED RAW UV CHANNEL RAW UV CHANNEL UV CHANNEL RAW RAW UV CHANNEL January February March April May June July August September October November December TOTAL Page 5 of 71

7 VAUXHALL 2013 PLANT BYPASSES V1 CITY OF LONDON PLANT MM/DD/YY ENVIRONMENTAL SERVICES DEPARTMENT WASTEWATER TREATMENT OPERATIONS DIVISION ######## WEATHER SEWAGE ANALYSES HAULED SLUDGE D TEMP. FLOW THRU PLANT BY-PASS BOD 5 DAY SUSPENDED PH TOTAL AMMONIAV. CHANNEL D.O. A R W D C PLANT P T (mg/l) SOLIDS -(mg/l) PHOS. PLANT T A I I CUBIC METERS H E U A (mg/l) (mg/l) G % E I N R R F X 1000 S O A M ph N M I E. E N D E A I PER DAY VOLUME HRS. U S S M P I M C C C C C C C C U C N F B C F W N (10 3 m 3 /D) (10 3 m 3 S O ) B P M E O O RAW O H RAW O H RAW O H RAW O H V H T C F S A T A RATE O P L H O R N N N A N A N A N A A E O L T O L I L D E I O N A I I T M T M T M T M N N L U L L O MAX. MIN. TOTAL N D R I T Z A A B A B A B A B N S I E I N D S O A U E C E C E C E C E E I N D E U R D T R T R T R T R L T MPN T S D S E Y mm (mg/l) (mg/l) (mg/l) (mg/l) (C) (mg/l) Jan WSW Jan SW Apr sw Apr sw May se Jun ssw Jun ssw Jul-13 9 SSW Jul WSW Jul SSW Aug nw Aug sw Aug ssw Sep sw Sep w Oct w Oct ese Nov sw Page 6 of 71

8 Vauxhall Raw Bypass Total ,398 count 18 Start Date Start Time Finish date Finish time duration volume Reason for bypass Authority (hours) (m 3 ) 13-Jan-13 7:18 AM 13-Jan-13 8:00 AM ,7 C & D 29-Jan-13 9:58 AM 29-Jan-13 9:14 PM ,181 1, 2, 7 C & D 09-Apr-13 8:25 PM 09-Apr-13 9:13 PM ,057 1,7 C & D 10-Apr-13 2:06 PM 10-Apr-13 2:42 PM ,154 1,7 C & D 28-May-13 5:32 PM 29-May-13 4:35 AM ,104 1,7 C & D 16-Jun-13 8:36 PM 16-Jun-13 9:23 PM ,167 1,3 C & D 22-Jun-13 7:30 PM 22-Jun-13 8:02 PM ,112 1,7 C & D 08-Jul-13 7:10 PM 08-Jul-13 9:05 PM ,7 C & D 10-Jul-13 5:00 PM 10-Jul-13 6:42 PM ,150 1,7 C & D 27-Jul-13 8:57 PM 27-Jul-13 9:12 PM ,7 C & D 01-Aug-13 1:46 AM 01-Aug-13 2:40 AM ,002 1,7 C & D 08-Aug-13 12:12 AM 08-Aug-13 1:47 AM ,101 1,7 C & D 28-Aug-13 3:00 AM 28-Aug-13 5:47 AM ,7 C & D 11-Sep-13 5:30 PM 11-Sep-13 10:30 PM ,419 1,7 C & D 20-Sep-13 8:40 PM 21-Sep-13 3:50 PM ,735 1,7 C & D 04-Oct-13 9:47 AM 04-Oct-13 10:10 AM ,7 C & D 06-Oct-13 9:02 PM 06-Oct-13 10:28 PM ,7 C & D 17-Nov-13 8:10 PM 17-Nov-13 8:33 PM ,7 C & D 1 Heavy Precipitation A Avoid loss of life 2 Snow melt B Avoid personal injury 3 Equipment failure C Avoid dangeer to public health 4 Equipment maintenance D Avoid severe property damage 5 Sewer problem E Prior written acknowledgement 6 Power failure 7 Exceed design capacity Page 7 of 71

9 Vauxhall Secondary bypass Total ,222 count 2 Start Date Start Time Finish date Finish time duration volume Reason for bypass Authority (hours) (m 3 ) 20-Sep-13 8:40 PM 21-Sep-13 3:50 PM ,131 1,7 C & D 04-Oct Oct-13 9:30 PM 07-Oct-13 4:40 AM ,091 1,7 C & D 17-Nov Heavy Precipitation A Avoid loss of life 2 Snow melt B Avoid personal injury 3 Equipment failure C Avoid dangeer to public health 4 Equipment maintenance D Avoid severe property damage 5 Sewer problem E Prior written acknowledgement 6 Power failure 7 Exceed design capacity Page 8 of 71

10 Vauxhall Raw and Secondary bypass Total 45,620 count 18 Start Date Start Time Finish date Finish time duration volume Reason for bypass Authority (hours) (m 3 ) 13-Jan-13 7:18 AM 13-Jan-13 8:00 AM 16 1,7 C & D 29-Jan-13 9:58 AM 29-Jan-13 9:14 PM 2,181 1, 2, 7 C & D 09-Apr-13 8:25 PM 09-Apr-13 9:13 PM 1,057 1,7 C & D 10-Apr-13 2:06 PM 10-Apr-13 2:42 PM 1,154 1,7 C & D 28-May-13 5:32 PM 29-May-13 4:35 AM 2,104 1,7 C & D 16-Jun-13 8:36 PM 16-Jun-13 9:23 PM 1,167 1,3 C & D 22-Jun-13 7:30 PM 22-Jun-13 8:02 PM 1,112 1,7 C & D 08-Jul-13 7:10 PM 08-Jul-13 9:05 PM 371 1,7 C & D 10-Jul-13 5:00 PM 10-Jul-13 6:42 PM 1,150 1,7 C & D 27-Jul-13 8:57 PM 27-Jul-13 9:12 PM 25 1,7 C & D 01-Aug-13 1:46 AM 01-Aug-13 2:40 AM 2,002 1,7 C & D 08-Aug-13 12:12 AM 08-Aug-13 1:47 AM 1,101 1,7 C & D 28-Aug-13 3:00 AM 28-Aug-13 5:47 AM 4 1,7 C & D 11-Sep-13 5:30 PM 11-Sep-13 10:30 PM 5,419 1,7 C & D 20-Sep-13 8:40 PM 21-Sep-13 3:50 PM 19,866 1,7 C & D 04-Oct-13 9:47 AM 04-Oct-13 10:10 AM 71 1,7 C & D 06-Oct-13 9:30 PM 07-Oct-13 4:40 AM 6,730 1,7 C & D 17-Nov-13 8:10 PM 17-Nov-13 8:33 PM 90 1,7 C & D 1 Heavy Precipitation A Avoid loss of life 2 Snow melt B Avoid personal injury 3 Equipment failure C Avoid dangeer to public health 4 Equipment maintenance D Avoid severe property damage 5 Sewer problem E Prior written acknowledgement 6 Power failure 7 Exceed design capacity Page 9 of 71

11 VAUXHALL 2013 PLANT SUMMARY CITY OF LONDON PLANT MM/DD/YY ENVIRONMENTAL SERVICES DEPARTMENT WASTEWATER TREATMENT OPERATIONS DIVISION ######## WEATHER SEWAGE ANALYSES HAULED SLUDGE TEMP. FLOW THRU PLANT BY-PASS BOD 5 DAY SUSPENDED ph TOTAL AMMONIA U.V. D.O. m 3 R W D C PLANT P T (mg/l) SOLIDS -(mg/l) PHOSPHORUS CHANNEL PLANT I I CUBIC METERS (mg/l) A H E U A (mg/l) G % N R X 1000 S I R F O A M ph N M E. E N D E A I PER DAY VOLUME HRS. U S S M P I M U C U C U C U C U C F B C F W N (10 3 m 3 /D) (10 3 m 3 S O RAW ) B P M E O O RAW V H V H RAW V H RAW V H V H C F S A T A RATE O P L H O R N N A A A A A O L T O L I L D E I O N A I I N N N N N L U L L O MAX. MIN. TOTAL N D R I T Z A N N N N N I E I N D S U A U E E E E E E N D E S R D L L L L L MPN T S D E mm (mg/l) (mg/l) (mg/l) (mg/l) (C) (mg/l) Jan-13 SSW Jan-13 SW Jan-13 SW Jan-13 SW Jan-13 SW Jan-13 SW Jan-13 SSW Jan-13 SW Jan-13 SW Jan-13 SW Jan-13 SW Jan-13 SW Jan WSW Jan-13 SW Jan-13 SW Jan-13 SW Jan-13 SW Jan-13 SW Jan-13 WSW Jan-13 W Jan-13 SW Jan-13 W Jan-13 ENE Jan-13 S Jan-13 W Jan-13 W Jan ENE Jan W Jan SW Jan SW Jan W , Feb-13 w Feb-13 1 sw Feb-13 ne Feb-13 sw Feb-13 ssw Feb-13 sw Feb-13 sw Feb ne Feb-13 nnw Feb-13 2 e Feb sw Feb-13 sw Feb-13 w Feb-13 sw , Feb-13 w Feb-13 wnw V1 Page 10 of 71

12 VAUXHALL 2013 PLANT SUMMARY CITY OF LONDON PLANT MM/DD/YY ENVIRONMENTAL SERVICES DEPARTMENT WASTEWATER TREATMENT OPERATIONS DIVISION ######## WEATHER SEWAGE ANALYSES HAULED SLUDGE TEMP. FLOW THRU PLANT BY-PASS BOD 5 DAY SUSPENDED ph TOTAL AMMONIA U.V. D.O. m 3 R W D C PLANT P T (mg/l) SOLIDS -(mg/l) PHOSPHORUS CHANNEL PLANT I I CUBIC METERS (mg/l) A H E U A (mg/l) G % N R X 1000 S I R F O A M ph N M E. E N D E A I PER DAY VOLUME HRS. U S S M P I M U C U C U C U C U C F B C F W N (10 3 m 3 /D) (10 3 m 3 S O RAW ) B P M E O O RAW V H V H RAW V H RAW V H V H C F S A T A RATE O P L H O R N N A A A A A O L T O L I L D E I O N A I I N N N N N L U L L O MAX. MIN. TOTAL N D R I T Z A N N N N N I E I N D S U A U E E E E E E N D E S R D L L L L L MPN T S D E mm (mg/l) (mg/l) (mg/l) (mg/l) (C) (mg/l) Feb-13 n Feb-13 ese Feb-13 3 wsw Feb w Feb-13 w Feb e Feb-13 sw Feb-13 w Feb-13 w Feb se Feb e Feb-13 se Mar-13 ne Mar-13 n Mar-13 nnw Mar-13 ne Mar-13 ssw Mar-13 se Mar-13 ssw Mar-13 nw Mar-13 ese Mar-13 sse Mar sse Mar sw Mar-13 nw Mar-13 nw Mar w Mar e Mar-13 w Mar sw Mar-13 se Mar-13 sw Mar-13 sw Mar-13 ssw Mar-13 wnw Mar-13 calm Mar-13 sw Mar-13 nw Mar-13 w Mar-13 sw Mar-13 w Mar-13 sw Mar-13 se Apr wnw Apr-13 WSW Apr-13 WNW Apr-13 SSW V1 Page 11 of 71

13 VAUXHALL 2013 PLANT SUMMARY CITY OF LONDON PLANT MM/DD/YY ENVIRONMENTAL SERVICES DEPARTMENT WASTEWATER TREATMENT OPERATIONS DIVISION ######## WEATHER SEWAGE ANALYSES HAULED SLUDGE TEMP. FLOW THRU PLANT BY-PASS BOD 5 DAY SUSPENDED ph TOTAL AMMONIA U.V. D.O. m 3 R W D C PLANT P T (mg/l) SOLIDS -(mg/l) PHOSPHORUS CHANNEL PLANT I I CUBIC METERS (mg/l) A H E U A (mg/l) G % N R X 1000 S I R F O A M ph N M E. E N D E A I PER DAY VOLUME HRS. U S S M P I M U C U C U C U C U C F B C F W N (10 3 m 3 /D) (10 3 m 3 S O RAW ) B P M E O O RAW V H V H RAW V H RAW V H V H C F S A T A RATE O P L H O R N N A A A A A O L T O L I L D E I O N A I I N N N N N L U L L O MAX. MIN. TOTAL N D R I T Z A N N N N N I E I N D S U A U E E E E E E N D E S R D L L L L L MPN T S D E mm (mg/l) (mg/l) (mg/l) (mg/l) (C) (mg/l) Apr-13 W Apr-13 sw Apr-13 sw Apr sw Apr sw Apr sw Apr e Apr e Apr wsw Apr nw Apr-13 w Apr sw Apr-13 8 ssw Apr-13 ESE Apr wsw Apr wnw Apr-13 ese Apr-13 s Apr-13 sw Apr-13 nw Apr-13 s Apr-13 s Apr-13 E Apr E Apr-13 s Apr-13 sw < May-13 ssw May-13 se May-13 sw May-13 SE May-13 ENE May-13 w May-13 sw < May sw May-13 s May-13 5 sw May WNW May W May-13 ssw May-13 sw < May-13 w May-13 sw May-13 s May-13 s May-13 ESE May-13 se May-13 sw V1 Page 12 of 71

14 VAUXHALL 2013 PLANT SUMMARY CITY OF LONDON PLANT MM/DD/YY ENVIRONMENTAL SERVICES DEPARTMENT WASTEWATER TREATMENT OPERATIONS DIVISION ######## WEATHER SEWAGE ANALYSES HAULED SLUDGE TEMP. FLOW THRU PLANT BY-PASS BOD 5 DAY SUSPENDED ph TOTAL AMMONIA U.V. D.O. m 3 R W D C PLANT P T (mg/l) SOLIDS -(mg/l) PHOSPHORUS CHANNEL PLANT I I CUBIC METERS (mg/l) A H E U A (mg/l) G % N R X 1000 S I R F O A M ph N M E. E N D E A I PER DAY VOLUME HRS. U S S M P I M U C U C U C U C U C F B C F W N (10 3 m 3 /D) (10 3 m 3 S O RAW ) B P M E O O RAW V H V H RAW V H RAW V H V H C F S A T A RATE O P L H O R N N A A A A A O L T O L I L D E I O N A I I N N N N N L U L L O MAX. MIN. TOTAL N D R I T Z A N N N N N I E I N D S U A U E E E E E E N D E S R D L L L L L MPN T S D E mm (mg/l) (mg/l) (mg/l) (mg/l) (C) (mg/l) May sw May wnw May-13 N R May-13 nnw May-13 nnw May sw May se May-13 ssw May-13 sw May s Jun ssw Jun sw Jun-13 nw Jun-13 nw Jun-13 e Jun sw Jun-13 ne Jun-13 wnw Jun-13 ene Jun sw Jun-13 sw < Jun ssw Jun nw Jun-13 nnw Jun-13 sw Jun ssw Jun-13 sw Jun-13 ssw < Jun-13 nw Jun-13 nw Jun-13 ne Jun ssw Jun-13 s na na Jun-13 nw Jun-13 1 nw Jun-13 ssw Jun s Jun ne Jun wsw Jun-13 sw Jul-13 NE Jul-13 ENE Jul-13 3 NE Jul-13 9 SSW Jul ESE Jul SW Jul WSW V1 Page 13 of 71

15 VAUXHALL 2013 PLANT SUMMARY CITY OF LONDON PLANT MM/DD/YY ENVIRONMENTAL SERVICES DEPARTMENT WASTEWATER TREATMENT OPERATIONS DIVISION ######## WEATHER SEWAGE ANALYSES HAULED SLUDGE TEMP. FLOW THRU PLANT BY-PASS BOD 5 DAY SUSPENDED ph TOTAL AMMONIA U.V. D.O. m 3 R W D C PLANT P T (mg/l) SOLIDS -(mg/l) PHOSPHORUS CHANNEL PLANT I I CUBIC METERS (mg/l) A H E U A (mg/l) G % N R X 1000 S I R F O A M ph N M E. E N D E A I PER DAY VOLUME HRS. U S S M P I M U C U C U C U C U C F B C F W N (10 3 m 3 /D) (10 3 m 3 S O RAW ) B P M E O O RAW V H V H RAW V H RAW V H V H C F S A T A RATE O P L H O R N N A A A A A O L T O L I L D E I O N A I I N N N N N L U L L O MAX. MIN. TOTAL N D R I T Z A N N N N N I E I N D S U A U E E E E E E N D E S R D L L L L L MPN T S D E mm (mg/l) (mg/l) (mg/l) (mg/l) (C) (mg/l) Jul-13 9 SSW Jul SE Jul WSW Jul-13 SW Jul-13 NW Jul-13 E Jul-13 ESE Jul-13 E Jul-13 E Jul-13 SW Jul-13 NW Jul SW Jul-13 NNW Jul-13 NE Jul-13 SSW Jul-13 4 SW < Jul-13 SSW Jul-13 ESE Jul-13 SW Jul SSW Jul-13 2 SW Jul-13 SE Jul-13 SW < Jul-13 SW Aug nw Aug sw Aug-13 nw Aug-13 sw Aug-13 ssw Aug-13 sw Aug-13 sse Aug sw Aug-13 NNW Aug-13 nnw Aug-13 sw Aug-13 sw Aug-13 nw Aug-13 sw Aug-13 ssw Aug-13 w Aug-13 sw Aug-13 se Aug-13 sw Aug-13 sw Aug-13 sw Aug-13 nw Aug-13 nw V1 Page 14 of 71

16 VAUXHALL 2013 PLANT SUMMARY CITY OF LONDON PLANT MM/DD/YY ENVIRONMENTAL SERVICES DEPARTMENT WASTEWATER TREATMENT OPERATIONS DIVISION ######## WEATHER SEWAGE ANALYSES HAULED SLUDGE TEMP. FLOW THRU PLANT BY-PASS BOD 5 DAY SUSPENDED ph TOTAL AMMONIA U.V. D.O. m 3 R W D C PLANT P T (mg/l) SOLIDS -(mg/l) PHOSPHORUS CHANNEL PLANT I I CUBIC METERS (mg/l) A H E U A (mg/l) G % N R X 1000 S I R F O A M ph N M E. E N D E A I PER DAY VOLUME HRS. U S S M P I M U C U C U C U C U C F B C F W N (10 3 m 3 /D) (10 3 m 3 S O RAW ) B P M E O O RAW V H V H RAW V H RAW V H V H C F S A T A RATE O P L H O R N N A A A A A O L T O L I L D E I O N A I I N N N N N L U L L O MAX. MIN. TOTAL N D R I T Z A N N N N N I E I N D S U A U E E E E E E N D E S R D L L L L L MPN T S D E mm (mg/l) (mg/l) (mg/l) (mg/l) (C) (mg/l) Aug-13 s Aug-13 sw Aug-13 sw Aug-13 w Aug ssw Aug-13 sw Aug-13 sw Aug-13 se Sep ssw Sep-13 wnw Sep nw Sep-13 w < Sep-13 sw Sep-13 se Sep sw Sep-13 ne Sep-13 sw Sep-13 sw Sep sw Sep-13 sw Sep sw Sep-13 s Sep-13 wsw Sep-13 nne Sep-13 ssw Sep-13 sw Sep-13 ssw Sep w Sep ese Sep-13 nnw Sep-13 ene Sep-13 ese Sep-13 s Sep-13 wsw , Sep-13 sw Sep-13 w Sep-13 sw Sep-13 ssw Oct-13 w Oct-13 ssw Oct-13 w Oct w Oct e Oct ese Oct sw Oct-13 calm Oct-13 w V1 Page 15 of 71

17 VAUXHALL 2013 PLANT SUMMARY CITY OF LONDON PLANT MM/DD/YY ENVIRONMENTAL SERVICES DEPARTMENT WASTEWATER TREATMENT OPERATIONS DIVISION ######## WEATHER SEWAGE ANALYSES HAULED SLUDGE TEMP. FLOW THRU PLANT BY-PASS BOD 5 DAY SUSPENDED ph TOTAL AMMONIA U.V. D.O. m 3 R W D C PLANT P T (mg/l) SOLIDS -(mg/l) PHOSPHORUS CHANNEL PLANT I I CUBIC METERS (mg/l) A H E U A (mg/l) G % N R X 1000 S I R F O A M ph N M E. E N D E A I PER DAY VOLUME HRS. U S S M P I M U C U C U C U C U C F B C F W N (10 3 m 3 /D) (10 3 m 3 S O RAW ) B P M E O O RAW V H V H RAW V H RAW V H V H C F S A T A RATE O P L H O R N N A A A A A O L T O L I L D E I O N A I I N N N N N L U L L O MAX. MIN. TOTAL N D R I T Z A N N N N N I E I N D S U A U E E E E E E N D E S R D L L L L L MPN T S D E mm (mg/l) (mg/l) (mg/l) (mg/l) (C) (mg/l) Oct-13 sw Oct-13 w Oct-13 ese Oct-13 e Oct-13 s Oct se Oct ssw Oct sw Oct wsw Oct sw Oct-13 wsw Oct w Oct-13 wsw Oct w Oct ssw Oct w Oct sw Oct-13 wsw Oct-13 wsw Oct-13 ene Oct-13 ssw Oct-13 sw Nov-13 2 sw Nov-13 wnw Nov-13 w Nov-13 sw Nov-13 ssw Nov ssw Nov-13 sw Nov w Nov-13 se Nov-13 w Nov-13 ssw Nov-13 nw Nov-13 w Nov-13 sw Nov-13 sw Nov-13 sse Nov sw Nov-13 wsw Nov-13 w Nov-13 e Nov-13 w Nov s Nov wsw Nov wsw Nov-13 sw V1 Page 16 of 71

18 VAUXHALL 2013 PLANT SUMMARY CITY OF LONDON PLANT MM/DD/YY ENVIRONMENTAL SERVICES DEPARTMENT WASTEWATER TREATMENT OPERATIONS DIVISION ######## WEATHER SEWAGE ANALYSES HAULED SLUDGE TEMP. FLOW THRU PLANT BY-PASS BOD 5 DAY SUSPENDED ph TOTAL AMMONIA U.V. D.O. m 3 R W D C PLANT P T (mg/l) SOLIDS -(mg/l) PHOSPHORUS CHANNEL PLANT I I CUBIC METERS (mg/l) A H E U A (mg/l) G % N R X 1000 S I R F O A M ph N M E. E N D E A I PER DAY VOLUME HRS. U S S M P I M U C U C U C U C U C F B C F W N (10 3 m 3 /D) (10 3 m 3 S O RAW ) B P M E O O RAW V H V H RAW V H RAW V H V H C F S A T A RATE O P L H O R N N A A A A A O L T O L I L D E I O N A I I N N N N N L U L L O MAX. MIN. TOTAL N D R I T Z A N N N N N I E I N D S U A U E E E E E E N D E S R D L L L L L MPN T S D E mm (mg/l) (mg/l) (mg/l) (mg/l) (C) (mg/l) Nov-13 w Nov-13 w Nov-13 nw Nov-13 w Nov-13 w Dec-13 ssw Dec-13 NNW Dec-13 SE Dec-13 E Dec-13 SSW Dec-13 NW Dec-13 sw Dec-13 se Dec wsw Dec-13 w Dec-13 w Dec-13 w Dec-13 sw Dec-13 ene Dec-13 wsw Dec-13 sw Dec-13 w Dec-13 sw Dec ssw Dec sw Dec wnw Dec e Dec-13 w Dec sw Dec e Dec sw Dec w Dec-13 wsw Dec-13 ssw Dec w Dec w V1 AVERAGE TOTAL 5, ,272 MAX , MIN # OF SAMPLES Page 17 of 71

19 STD 0.12 Max 7.97 Min 7.3 average 7.58 count 52 RECORD_# CUST SAMP REF NO SAMPLE DATE ANALYTE RESULT UNIT SAMPLE SOURCE VAUX. UV ph 7.51 ph units GRAB VAUX. UV ph 7.47 ph units GRAB VAUX. UV ph 7.51 ph units GRAB VAUX. UV ph 7.53 ph units GRAB VAUX. UV ph 7.3 ph units GRAB VAUX. UV ph 7.54 ph units GRAB VAUX. UV ph 7.44 ph units GRAB VAUX. UV ph 7.53 ph units GRAB VAUX. UV ph 7.53 ph units GRAB VAUX. UV ph 7.48 ph units GRAB VAUX. UV ph 7.43 ph units GRAB VAUX. UV ph 7.55 ph units GRAB VAUX. UV ph 7.51 ph units GRAB VAUX. UV ph 7.46 ph units GRAB VAUX. UV ph 7.63 ph units GRAB VAUX. UV ph 7.85 ph units GRAB VAUX. UV ph 7.68 ph units GRAB VAUX. UV ph 7.61 ph units GRAB VAUX. UV ph 7.76 ph units GRAB VAUX. UV ph 7.66 ph units GRAB VAUX. UV ph 7.64 ph units GRAB VAUX. UV ph 7.56 ph units GRAB VAUX. UV ph 7.52 ph units GRAB VAUX. UV ph 7.42 ph units GRAB VAUX. UV ph 7.75 ph units GRAB VAUX. UV ph 7.68 ph units GRAB VAUX. UV ph 7.78 ph units GRAB VAUX. UV ph 7.64 ph units GRAB VAUX. UV ph 7.44 ph units GRAB VAUX. UV ph 7.97 ph units GRAB VAUX. UV ph 7.61 ph units GRAB VAUX. UV ph 7.63 ph units GRAB VAUX. UV ph 7.72 ph units GRAB VAUX. UV ph 7.7 ph units GRAB VAUX. UV ph 7.62 ph units GRAB VAUX. UV ph 7.59 ph units GRAB VAUX. UV ph 7.57 ph units GRAB VAUX. UV ph 7.67 ph units GRAB VAUX. UV ph 7.48 ph units GRAB Page 18 of 71

20 STD 0.12 Max 7.97 Min 7.3 average 7.58 count 52 RECORD_# CUST SAMP REF NO SAMPLE DATE ANALYTE RESULT UNIT SAMPLE SOURCE VAUX. UV ph 7.62 ph units GRAB VAUX. UV ph 7.54 ph units GRAB VAUX. UV ph 7.6 ph units GRAB VAUX. UV ph 7.61 ph units GRAB VAUX. UV ph 7.42 ph units GRAB VAUX. UV ph 7.52 ph units GRAB VAUX. UV ph 7.64 ph units GRAB VAUX. UV ph 7.52 ph units GRAB VAUX. UV ph 7.55 ph units GRAB VAUX. UV ph 7.42 ph units GRAB VAUX. UV ph 7.67 ph units GRAB VAUX. UV ph 7.6 ph units GRAB VAUX. UV ph 7.46 ph units GRAB Page 19 of 71

21 VAUXHALL 2013 NITROGEN ANALYSES REPORT CITY OF LONDON PLANT: VAUXHALL NOTE: ALL RESULTS IN PPM AS "N ENVIRONMENTAL SERVICES DEPARTMENT WASTEWATER TREATMENT OPERATIONS DIVISION TKN - TOTAL KJELDAHL NITROGE DATE # 1 SECTION # 2 SECTION RAW PRIMARY SECONDARY PRIMARY SECONDARY UV channel FREE TKN ALKA FREE TKN ALKA FREE TKN NO3 FREE TKN ALKA FREE TKN NO3 FREE TEMP ph UNIONIZED TKN NO3 NO2 ALKA NH3 NH3 NH3 NH3 NH3 NH3 NH Jan-13 2-Jan Jan-13 4-Jan-13 5-Jan-13 6-Jan-13 7-Jan Jan-13 9-Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan-13 1-Feb-13 2-Feb-13 3-Feb-13 4-Feb Feb-13 6-Feb Feb-13 8-Feb-13 9-Feb Feb Feb Feb Feb Feb Feb Feb-13 Page 20 of 71

22 VAUXHALL 2013 NITROGEN ANALYSES REPORT CITY OF LONDON PLANT: VAUXHALL NOTE: ALL RESULTS IN PPM AS "N ENVIRONMENTAL SERVICES DEPARTMENT WASTEWATER TREATMENT OPERATIONS DIVISION TKN - TOTAL KJELDAHL NITROGE DATE # 1 SECTION # 2 SECTION RAW PRIMARY SECONDARY PRIMARY SECONDARY UV channel FREE TKN ALKA FREE TKN ALKA FREE TKN NO3 FREE TKN ALKA FREE TKN NO3 FREE TEMP ph UNIONIZED TKN NO3 NO2 ALKA NH3 NH3 NH3 NH3 NH3 NH3 NH Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb-13 1-Mar-13 2-Mar-13 3-Mar-13 4-Mar Mar-13 6-Mar Mar-13 8-Mar-13 9-Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar-13 1-Apr-13 2-Apr Apr-13 4-Apr Page 21 of 71