CITY OF LONDON ENVIRONMENTAL & ENGINEERING SERVICES DEPARTMENT WASTEWATER TREATMENT OPERATIONS GREENWAY POLLUTION CONTROL CENTRE 2012 ANNUAL REPORT

Transcription

1 CITY OF LONDON ENVIRONMENTAL & ENGINEERING SERVICES DEPARTMENT WASTEWATER TREATMENT OPERATIONS GREENWAY POLLUTION CONTROL CENTRE 2012 ANNUAL REPORT FEBRUARY 2013

2 SUMMARY This annual report is in response to requirements under amended Certificate of Approval to Operate # SUPTV dated April 24, 2012 for the Greenway Pollution Control Centre. GREENWAY POLLUTION CONTROL CENTRE 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 monitoring data is included in the tables and graphs of the report. There were no monthly average concentrations or loading compliance exceedences in Phosphorous levels in 2012 averaged 0.33 mg/l. The annual average flow of 115 ML/day was within the limit of ML/day. The average daily plant peak flow was 187 ML/D in The ph of the effluent ranged from 7.1 to 8.1 which are within the required range of 6.0 to 9.5. The monthly average dissolved oxygen levels were greater than the minimum required in The Greenway PCC Environmental Assessment for an expansion has been completed. The Multiple Hearth Incinerator removal was completed. This area is going to be used by the centrifuges. The selection of Greenway Expansion consulting team and pre-design and detailed design was initiated in May Construction of the Biosolids Dewatering System (centrifuges, sludge pumps) is underway. A second Rotating Drum Thickener for waste activated sludge thickening was ordered in January 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 in 2012 to develop the plan through a detailed analysis of the impacts of rainfall events on our existing sewer systems and the Thames River. The existing and proposed changes in the works are sufficient to meet the requirements of the Certificate of Approval to Operate. b) A description of any operating problems encountered and corrective action taken; On January 13, 2012, the clarifier mechanism for three section number four final collector mechanism failed. This clarifier handles 40 percent of the section three flows or roughly 36 Megalitres per day. This represents a substantial portion of the total flow treated at the Greenway plant. The Ministry of Environment was immediately notified of the failure and the emergency repair process started Monday January 16. Three suppliers were contacted regarding the supply of drawings and guidance on the repairs and Yarmouth Crane and Rigging was brought in to assess the equipment needed to disassemble and repair the mechanism; the tank is not close to paved access and a large crane would be needed. Removal of the damaged mechanism started January 23, 2012, reinstallation began February 14, 2012 and the clarifier was returned to service February 24, 2012.

3 All clarifier mechanisms in use at the City s Wastewater Treatment Plants receive annual preventative maintenance (PM) inspections. This failure was attributable to a faulty torque limiting switch in combination with a structural failure and excessive wear on previously unidentified wear blocks. The PM inspections will now include closer scrutiny of these items. Fouling and transmittance issues with the UV system yielded poorer than expected disinfection in June and July. Alum was used in August as ferric was suspected as an underlying problem. Trojan inspected the wiper system but found no issues with the wipers. Transmittance issues continued with the alum and the dosage of UV was increased in September. 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 Greenway Pollution Control Centre 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. The ph samples were done on grab samples once a week and the composite samples the rest of the time. The UV channel analysis includes bypasses of the screen room and aeration section due to high flows during rainfall/snow melt events. Analyses are based on 24 hr. samples for the Greenway Pollution Control Centre with the exceptions of E. Coli, temperature and Dissolved oxygen which are grab samples. The ph samples were done once a week on grab samples beginning the week of January 23 rd and the rest of the results were based on composites. Grab samples for ph were missed in the week of August 20 th and the week of November 20 th, Composite sample phs were obtained during these weeks. e) A summary of the calibration and maintenance carried out on all effluent monitoring equipment; Calibration information is in the report. f) A description of efforts made and results achieved in meeting the effluent Objectives of Condition 6; The plant met the monthly average concentration and loading objectives for BOD, suspended solids and Un-ionized Ammonia 100% of the time in The minimum Dissolved Oxygen monthly average concentration objective was achieved 100% of the time in Monthly Geometric means for E. Coli in Greenway's effluent in 2012 disinfection period were achieved 66% of the time. As noted above, Alum was used in August as we suspected ferric was an underlying problem.

4 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 sludge was disposed; Sludge wasted in 2012 from the aeration sections was 685,000 cubic metres with average solids of 0.68%. The primary sludge generated in 2012 had a volume of 189,753 cubic metres with average solids of 3.5%. The Greenway activated sludge is thickened in dissolved air flotation units or Rotating Drum thickeners. Sludge from the other City of London Wastewater Treatment Plants is hauled to Greenway. In 2012 we anticipate generating 800,000 cubic metres of aeration sludge and 200,000 cubic metres of primary sludge at the Greenway PCC. In 2012, the press cake was incinerated or processed in the Bioset process and hauled to the W12A landfill. In 2013 we plan to incinerate or process the sludge in the Bioset process and haul to the W12A Landfill if the incinerator is not operating. The volume of sludge is included in tables in the report. h) A summary of any complaints received during the reporting period and any steps taken to address the complaints; There were 9 complaints received at Greenway in i. On March 19, 2012 there were two complaints due to odours. The wind was from the South Southeast. Any open doors on the sludge disposal building were closed. ii. On March 20, 2012 a complaint was due to odours. The wind was from the South Southeast. No odours were detected at the Greenway PCC and odours were detected on Riverside Drive but they were not plant odours. iii. On September 17, 2012 a complaint was due to odours. The odour complaint was likely due to a clean-up of our sludge cake hopper. The hopper had some sludge in it leftover from a recent bioset operation and it was being cleaned out. Due to construction there is a large opening on the side of the building. The building will be closed when construction is completed. iv. On October 9, 2012 there was a complaint about odours. The wind was from the South Southeast. All scrubbers were operating normally based on ORP readings. Due to construction there is a large opening on the side of the building and the large garage door was open. The building will be closed when construction is completed. A slight odour of sewage was noticed by the operator when he checked out the complainant s site. v. On October 17, 2012 there was an odour complaint. The wind was from the South Southeast. Section 1 aeration was being drained for maintenance which could have contributed to the odour. All scrubbers were operating normally based on ORP readings. The operator drove to the site and did not notice any sewage odour. vi. On November 5, 2012 there was an odour complaint. The wind was from the West Southwest. All scrubbers were operating normally based on ORP readings. The complaint mentions November 3 rd as strong smells. The November 3 rd Screen room scrubber ORP readings were 678 and 683, the Grit scrubber ORP readings were 758 and 692, the sludge building scrubber #3 ORP readings were 695 and 770 and the #4 scrubber ORP readings were 684 and 765. The Greenway scrubbers were inspected and found to be working properly.

5 vii. On November 22, 2012 there was an odour complaint. The wind was from the South Southwest. All scrubbers were operating normally. The complaint mentions that odours were noticed for the past six weeks and occurred mainly later in the day. Contractors were told to close openings in the sludge disposal building. viii. On December 24, 2012 there was an odour complaint. The wind was from the East Southeast from 8:00 to 11:000 am. December 24, All scrubbers were operating normally. When the operator went to the site no odours were detected. i) A summary of all By-pass, spill or abnormal discharge events. There were 6 by-pass events in 2012 at the Greenway Pollution Control Centre. Rainfall for 2012 was 660 mm compared to 931 mm for 2010 which was a more average year for rainfall. There were 6 secondary by-passs events (received primary treatment) and of the 6 events there were 3 that included raw sewagee bypasses. The total bypasses receiving primary treatmentt was ML. The total raw sewage bypassed was 0.86 ML. The raw by-pass was % of the volume receiving full treatment and the primary treated by-pass was 0.01% of the volume receiving full treatment. The bypassed primary sewage and raw sewage mixes with the treated flow priorr to discharge to the Thames River. The bypasss data is in the tables of the report. ASH: : The ash basins consist of a north and south unit and aree used on an alternating basis. When one unit becomes full, the ash is dewatered and removed by dragline and trucks. In August 2012 geotubes were started to be used to dewater the ash and the ash basins weree taken out of service. Geotubes containers are constructed of a specially- woven polypropylene material used as dewatering technology for agriculture, aquaculture, environmental remediation, pulp and paper, mining and mineral processing, power generation, and sludge and septage dewatering in water and wastewater treatment.

6 The geotube treatment process consists of filling the geotube container with slurry of ash. Polymer is introduced into the media to promote flocculation which allows the solids to bind and separate water more efficiently. The geotube container then dewaters the clear effluent commonly known as filtrate to section #3 aeration. Once the bag is filled to its recommended storage capacity the dewatered contents are left to dry further and then the ash can be removed. St. Mary s Cement is currently recycling the dewatered ash. The ash from the ash basins was hauled to the St. Mary s Cement in Total tonnes of ash removed were 3,105 tonnes. ASH HAULED FROM GREENWAY Ash Basins 2,274 tonnes St. Mary s Cement September /2012 Geotubes (2) 831 tonnes St. Mary s Cement December/2012 Total 3,105 tonnes Greenway Pollution Control Centre Aerial April 2012.

7 TABLE 1 GREENWAY PCC 2012 MONTHLY AVERAGE SUMMARY DATE TOTAL BOD SUSPENDED SOLIDS EFFLUENT DISSOLVED FLOW RAW UV CHANNEL RAW UV CHANNEL OXYGEN (MG/L) (10 3 m 3 /D) (MG/L) KG/DAY (MG/L) KG/DAY (MG/L) (MG/L) KG/DAY KG/DAY LOWER LOWER ACTUAL LIMIT ACTUAL LIMIT ACTUAL LIMIT ACTUAL LIMIT ACTUAL LIMIT 0BJECTIVE January , , ,032 1, February , , , March , , , April , , , May , , , June , , , July , , , August , , , September , , , October , , , November , , , December , , , OBJECTIVE AVERAGE , (10 3 m 3 /D) = MIGPD DATE UV CHANNEL PHOSPHOROUS MONTHLY TEMPERATURE NH3 - N UN-IONIZED NH3 RAW UV CHANNEL GEOMETRIC MEAN (C) (MG/L) (MG/L) (MG/L) (MG/L) KG/DAY E. COLI ACTUAL LIMIT ACTUAL LIMIT ACTUAL LIMIT (ORGS/100MLS) OBJECTIVE January February March April May June July August September October November December OBJECTIVE AVERAGE NOTE: BLACK SHADING ARE EXCEEDENCES OF MONTHLY COMPLIANCE LIMITS GREY SHADING ARE VALUES ABOVE MONTHLY AVERAGE OBJECTIVES

8 BY-PASSES OF SECONDARY TREATMENT IN 2012 GREENWAY 2012 PLANT SUMMARY CITY OF LONDON PLANT GREENWAY ALL SECTIONS ENVIRONMENTAL SERVICES DEPARTMENT POLLUTION CONTROL OPERATIONS DIVISION WEATHER SEWAGE PRIMARY SLUDGE ANALYSES D TEMP. FLOW THRU SECONDARY BY-PASS TO HOLDING TANK BOD 5 DAY SUSP. ph TOTAL NH3 UV A R W D C PLANT P T (mg/l) SOLIDS PHOS. D.O. CHANNEL T A I I 1,000 CUBIC H E U A Cubic % ph % (mg/l) (mg/l) (mg/l) PLANT E I N R R F METERS S O A M ph N M Meters V S % N D E A I PER DAY VOLUME HRS. U S S M P I M R S O O U C U C U C U C E I E. F C W N (10 3 m 3 /D) (10 3 m 3 ) B S O P M E O O E O L LRAW V H RAW V H RAW V H RAW V H U C F N A T A RATE O P L H O R N N M L A I A A A A V H F T E. L I L D E I O N A I I O I T D N N N N A L E C L O MAX. MIN. TOTAL N D R I T Z A V D I S N N N N N U N O N D S O A U E E S L E E E E N E S L E U R D D E L L L L E N I I D S E D L T T mm (mg/l) (mg/l) (mg/l) (mg/l) (C) (mg/l) Y MPN COA Jan Jan Jan Jan Jan Jan Jan Feb Jun Dec

9 GREENWAY 2012 PLANT SUMMARY CITY OF LONDON PLANT GREENWAY ALL SECTIONS ENVIRONMENTAL SERVICES DEPARTMENT POLLUTION CONTROL OPERATIONS DIVISION WEATHER SEWAGE PRIMARY SLUDGE ANALYSES D TEMP. FLOW THRU SECONDARY BY-PASS TO HOLDING TANK BOD 5 DAY SUSP. ph TOTAL NH3 UV A R W D C PLANT P T (mg/l) SOLIDS PHOS. D.O. CHANNEL T A I I 1,000 CUBIC H E U A Cubic % ph % (mg/l) (mg/l) (mg/l) PLANT E I N R R F METERS S O A M ph N M Meters V S N D E A I PER DAY VOLUME HRS. U S S M P I M R S O O U C U C U C U C E E. F C W N (10 3 m 3 /D) (10 3 m 3 ) B S O P M E O O E O L L RAW V H RAW V H RAW V H RAW V H U C F A T A RATE O P L H O R N N M L A I A A A A V H F E. L I L D E I O N A I I O I T D N N N N A L C L O MAX. MIN. TOTAL N D R I T Z A V D I S N N N N N U O N D S O A U E E S L E E E E N E L E U R D D E L L L L E N I D S E L T mm (mg/l) (mg/l) (mg/l) (mg/l) (C) (mg/l) MPN COA Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Jan Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Feb Mar Mar Mar Mar Mar Mar

10 GREENWAY 2012 PLANT SUMMARY CITY OF LONDON PLANT GREENWAY ALL SECTIONS ENVIRONMENTAL SERVICES DEPARTMENT POLLUTION CONTROL OPERATIONS DIVISION WEATHER SEWAGE PRIMARY SLUDGE ANALYSES D TEMP. FLOW THRU SECONDARY BY-PASS TO HOLDING TANK BOD 5 DAY SUSP. ph TOTAL NH3 UV A R W D C PLANT P T (mg/l) SOLIDS PHOS. D.O. CHANNEL T A I I 1,000 CUBIC H E U A Cubic % ph % (mg/l) (mg/l) (mg/l) PLANT E I N R R F METERS S O A M ph N M Meters V S N D E A I PER DAY VOLUME HRS. U S S M P I M R S O O U C U C U C U C E E. F C W N (10 3 m 3 /D) (10 3 m 3 ) B S O P M E O O E O L L RAW V H RAW V H RAW V H RAW V H U C F A T A RATE O P L H O R N N M L A I A A A A V H F E. L I L D E I O N A I I O I T D N N N N A L C L O MAX. MIN. TOTAL N D R I T Z A V D I S N N N N N U O N D S O A U E E S L E E E E N E L E U R D D E L L L L E N I D S E L T mm (mg/l) (mg/l) (mg/l) (mg/l) (C) (mg/l) MPN COA Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Mar Apr Apr Apr Apr Apr , Apr Apr Apr Apr Apr Apr Apr Apr Apr Apr Apr Apr Apr Apr Apr Apr Apr Apr Apr <10 25-Apr Apr Apr Apr Apr Apr May May May May May May May May May May May

11 GREENWAY 2012 PLANT SUMMARY CITY OF LONDON PLANT GREENWAY ALL SECTIONS ENVIRONMENTAL SERVICES DEPARTMENT POLLUTION CONTROL OPERATIONS DIVISION WEATHER SEWAGE PRIMARY SLUDGE ANALYSES D TEMP. FLOW THRU SECONDARY BY-PASS TO HOLDING TANK BOD 5 DAY SUSP. ph TOTAL NH3 UV A R W D C PLANT P T (mg/l) SOLIDS PHOS. D.O. CHANNEL T A I I 1,000 CUBIC H E U A Cubic % ph % (mg/l) (mg/l) (mg/l) PLANT E I N R R F METERS S O A M ph N M Meters V S N D E A I PER DAY VOLUME HRS. U S S M P I M R S O O U C U C U C U C E E. F C W N (10 3 m 3 /D) (10 3 m 3 ) B S O P M E O O E O L L RAW V H RAW V H RAW V H RAW V H U C F A T A RATE O P L H O R N N M L A I A A A A V H F E. L I L D E I O N A I I O I T D N N N N A L C L O MAX. MIN. TOTAL N D R I T Z A V D I S N N N N N U O N D S O A U E E S L E E E E N E L E U R D D E L L L L E N I D S E L T mm (mg/l) (mg/l) (mg/l) (mg/l) (C) (mg/l) MPN COA May May May May May May May May May May May May May May May May May May May May Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jun Jul Jul Jul Jul Jul Jul Jul Jul Jul Jul Jul Jul Jul Jul Jul Jul

12 GREENWAY 2012 PLANT SUMMARY CITY OF LONDON PLANT GREENWAY ALL SECTIONS ENVIRONMENTAL SERVICES DEPARTMENT POLLUTION CONTROL OPERATIONS DIVISION WEATHER SEWAGE PRIMARY SLUDGE ANALYSES D TEMP. FLOW THRU SECONDARY BY-PASS TO HOLDING TANK BOD 5 DAY SUSP. ph TOTAL NH3 UV A R W D C PLANT P T (mg/l) SOLIDS PHOS. D.O. CHANNEL T A I I 1,000 CUBIC H E U A Cubic % ph % (mg/l) (mg/l) (mg/l) PLANT E I N R R F METERS S O A M ph N M Meters V S N D E A I PER DAY VOLUME HRS. U S S M P I M R S O O U C U C U C U C E E. F C W N (10 3 m 3 /D) (10 3 m 3 ) B S O P M E O O E O L L RAW V H RAW V H RAW V H RAW V H U C F A T A RATE O P L H O R N N M L A I A A A A V H F E. L I L D E I O N A I I O I T D N N N N A L C L O MAX. MIN. TOTAL N D R I T Z A V D I S N N N N N U O N D S O A U E E S L E E E E N E L E U R D D E L L L L E N I D S E L T mm (mg/l) (mg/l) (mg/l) (mg/l) (C) (mg/l) MPN COA Jul Jul Jul Jul Jul Jul Jul Jul Jul Jul Jul Jul Jul Jul Jul Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Aug Sep Sep Sep Sep Sep Sep Sep Sep Sep Sep Sep Sep Sep Sep Sep Sep Sep Sep Sep Sep

13 GREENWAY 2012 PLANT SUMMARY CITY OF LONDON PLANT GREENWAY ALL SECTIONS ENVIRONMENTAL SERVICES DEPARTMENT POLLUTION CONTROL OPERATIONS DIVISION WEATHER SEWAGE PRIMARY SLUDGE ANALYSES D TEMP. FLOW THRU SECONDARY BY-PASS TO HOLDING TANK BOD 5 DAY SUSP. ph TOTAL NH3 UV A R W D C PLANT P T (mg/l) SOLIDS PHOS. D.O. CHANNEL T A I I 1,000 CUBIC H E U A Cubic % ph % (mg/l) (mg/l) (mg/l) PLANT E I N R R F METERS S O A M ph N M Meters V S N D E A I PER DAY VOLUME HRS. U S S M P I M R S O O U C U C U C U C E E. F C W N (10 3 m 3 /D) (10 3 m 3 ) B S O P M E O O E O L L RAW V H RAW V H RAW V H RAW V H U C F A T A RATE O P L H O R N N M L A I A A A A V H F E. L I L D E I O N A I I O I T D N N N N A L C L O MAX. MIN. TOTAL N D R I T Z A V D I S N N N N N U O N D S O A U E E S L E E E E N E L E U R D D E L L L L E N I D S E L T mm (mg/l) (mg/l) (mg/l) (mg/l) (C) (mg/l) MPN COA Sep Sep Sep Sep Sep Sep Sep Sep Sep Sep Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Oct Nov Nov Nov Nov Nov Nov Nov Nov Nov Nov Nov Nov Nov Nov Nov Nov Nov Nov Nov Nov Nov Nov Nov Nov Nov

14 GREENWAY 2012 PLANT SUMMARY CITY OF LONDON PLANT GREENWAY ALL SECTIONS ENVIRONMENTAL SERVICES DEPARTMENT POLLUTION CONTROL OPERATIONS DIVISION WEATHER SEWAGE PRIMARY SLUDGE ANALYSES D TEMP. FLOW THRU SECONDARY BY-PASS TO HOLDING TANK BOD 5 DAY SUSP. ph TOTAL NH3 UV A R W D C PLANT P T (mg/l) SOLIDS PHOS. D.O. CHANNEL T A I I 1,000 CUBIC H E U A Cubic % ph % (mg/l) (mg/l) (mg/l) PLANT E I N R R F METERS S O A M ph N M Meters V S N D E A I PER DAY VOLUME HRS. U S S M P I M R S O O U C U C U C U C E E. F C W N (10 3 m 3 /D) (10 3 m 3 ) B S O P M E O O E O L L RAW V H RAW V H RAW V H RAW V H U C F A T A RATE O P L H O R N N M L A I A A A A V H F E. L I L D E I O N A I I O I T D N N N N A L C L O MAX. MIN. TOTAL N D R I T Z A V D I S N N N N N U O N D S O A U E E S L E E E E N E L E U R D D E L L L L E N I D S E L T mm (mg/l) (mg/l) (mg/l) (mg/l) (C) (mg/l) MPN COA Nov Nov Nov Nov Nov Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec Dec TOTAL 42, ,753 AVERAGE MAX , MIN # OF SAMPLES

15 CUST SAMP REF NO SAMPLE DATE ANALYTE RESULT UNIT SAMPLE SOURCE 2 GRWY UV ph 7.42 ph units GRAB GRWY UV ph 7.4 ph units GRAB GRWY UV ph 7.4 ph units GRAB GRWY UV ph 7.32 ph units GRAB GRWY UV ph 7.35 ph units GRAB GRWY UV ph 7.4 ph units GRAB GRWY UV ph 7.37 ph units GRAB GRWY UV ph 7.22 ph units GRAB GRWY UV ph 7.24 ph units GRAB GRWY UV ph 7.21 ph units GRAB GRWY UV ph 7.32 ph units GRAB GRWY UV ph 7.24 ph units GRAB GRWY UV ph 7.23 ph units GRAB GRWY UV ph 7.63 ph units GRAB GRWY UV ph 7.14 ph units GRAB GRWY UV ph 7.44 ph units GRAB GRWY UV ph 7.26 ph units GRAB GRWY UV ph 7.3 ph units GRAB GRWY UV ph 7.53 ph units GRAB GRWY UV ph 7.36 ph units GRAB GRWY UV ph 7.47 ph units GRAB GRWY UV ph 7.29 ph units GRAB GRWY UV ph 7.43 ph units GRAB GRWY UV ph 7.38 ph units GRAB GRWY UV ph 7.41 ph units GRAB GRWY UV ph 7.34 ph units GRAB GRWY UV ph 7.5 ph units GRAB GRWY UV ph 7.34 ph units GRAB GRWY UV ph 7.33 ph units GRAB GRWY UV ph 7.23 ph units GRAB GRWY UV ph 7.44 ph units GRAB GRWY UV ph 7.43 ph units GRAB GRWY UV ph 7.35 ph units GRAB GRWY UV ph 7.25 ph units GRAB GRWY UV ph 7.22 ph units GRAB GRWY UV ph 7.37 ph units GRAB GRWY UV ph 7.25 ph units GRAB GRWY UV ph 7.09 ph units GRAB GRWY UV ph 7.21 ph units GRAB GRWY UV ph 7.18 ph units GRAB GRWY UV ph 7.54 ph units GRAB GRWY UV ph 7.43 ph units GRAB GRWY UV ph 7.18 ph units GRAB GRWY UV ph 7.29 ph units GRAB GRWY UV ph 7.25 ph units GRAB

16 CUST SAMP REF NO SAMPLE DATE ANALYTE RESULT UNIT SAMPLE SOURCE 2 GRWY UV ph 7.45 ph units GRAB GRWY UV ph 7.49 ph units GRAB

17 GREENWAY 2012 NITROGEN ANALYSES REPORT CITY OF LONDON PLANT: GREENWAY NOTE: ALL RESULTS IN PPM AS "N" ENVIRONMENTAL SERVICES DEPARTMENT TKN - TOTAL KJELDAHL NITROGEN DATE # 1 SECTION # 2 SECTION # 3 SECTION RAW PRIMARY SECONDARY PRIMARY #1 PASS #2 & 3 PASS PRIMARY # 1 PASS SECONDARY # 2 PASS SECONDARY # 3 PASS SECONDARY UV CHANNEL FREE TKN ALKA FREE TKN ALKA FREE TKN FREE TKN ALKA FREE TKN FREE TKN FREE TKN ALKA FREE TKN FREE TKN FREE TKN FREE TEMP ph UN-IONIZEDTKN NO3 NO2 ALKA NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH Jan 02-Jan 03-Jan Jan 05-Jan Jan 07-Jan 08-Jan 09-Jan Jan 11-Jan Jan 13-Jan 14-Jan 15-Jan 16-Jan Jan Jan 19-Jan 20-Jan 21-Jan 22-Jan 23-Jan Jan 25-Jan Jan 27-Jan 28-Jan 29-Jan 30-Jan Jan Feb 02-Feb 03-Feb 04-Feb 05-Feb 06-Feb Feb Feb 09-Feb 10-Feb 11-Feb 12-Feb 13-Feb Feb 15-Feb Feb 17-Feb 18-Feb 19-Feb 20-Feb 21-Feb Feb Feb 24-Feb 25-Feb 26-Feb

18 GREENWAY 2012 NITROGEN ANALYSES REPORT CITY OF LONDON PLANT: GREENWAY NOTE: ALL RESULTS IN PPM AS "N" ENVIRONMENTAL SERVICES DEPARTMENT TKN - TOTAL KJELDAHL NITROGEN DATE # 1 SECTION # 2 SECTION # 3 SECTION RAW PRIMARY SECONDARY PRIMARY #1 PASS #2 & 3 PASS PRIMARY # 1 PASS SECONDARY # 2 PASS SECONDARY # 3 PASS SECONDARY UV CHANNEL FREE TKN ALKA FREE TKN ALKA FREE TKN FREE TKN ALKA FREE TKN FREE TKN FREE TKN ALKA FREE TKN FREE TKN FREE TKN FREE TEMP ph UN-IONIZEDTKN NO3 NO2 ALKA NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH Feb Feb 29-Feb Mar 02-Mar 03-Mar 04-Mar 05-Mar Mar Mar 08-Mar 09-Mar 10-Mar 11-Mar 12-Mar Mar 14-Mar Mar 16-Mar 17-Mar 18-Mar 19-Mar 20-Mar Mar 22-Mar Mar 24-Mar 25-Mar 26-Mar Mar Mar 29-Mar 30-Mar 31-Mar 01-Apr 02-Apr Apr Apr 05-Apr 06-Apr 07-Apr 08-Apr 09-Apr 10-Apr Apr 12-Apr Apr 14-Apr 15-Apr 16-Apr Apr 18-Apr Apr 20-Apr 21-Apr 22-Apr 23-Apr

19 GREENWAY 2012 NITROGEN ANALYSES REPORT CITY OF LONDON PLANT: GREENWAY NOTE: ALL RESULTS IN PPM AS "N" ENVIRONMENTAL SERVICES DEPARTMENT TKN - TOTAL KJELDAHL NITROGEN DATE # 1 SECTION # 2 SECTION # 3 SECTION RAW PRIMARY SECONDARY PRIMARY #1 PASS #2 & 3 PASS PRIMARY # 1 PASS SECONDARY # 2 PASS SECONDARY # 3 PASS SECONDARY UV CHANNEL FREE TKN ALKA FREE TKN ALKA FREE TKN FREE TKN ALKA FREE TKN FREE TKN FREE TKN ALKA FREE TKN FREE TKN FREE TKN FREE TEMP ph UN-IONIZEDTKN NO3 NO2 ALKA NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH Apr Apr 26-Apr 27-Apr 28-Apr 29-Apr 30-Apr May 02-May May 04-May 05-May 06-May 07-May May May 10-May 11-May 12-May 13-May 14-May May 16-May May 18-May 19-May 20-May 21-May 22-May May May 25-May 26-May 27-May 28-May May 30-May 31-May Jun 02-Jun 03-Jun 04-Jun Jun Jun 07-Jun 08-Jun 09-Jun 10-Jun 11-Jun Jun 13-Jun Jun 15-Jun 16-Jun 17-Jun 18-Jun Jun

20 GREENWAY 2012 NITROGEN ANALYSES REPORT CITY OF LONDON PLANT: GREENWAY NOTE: ALL RESULTS IN PPM AS "N" ENVIRONMENTAL SERVICES DEPARTMENT TKN - TOTAL KJELDAHL NITROGEN DATE # 1 SECTION # 2 SECTION # 3 SECTION RAW PRIMARY SECONDARY PRIMARY #1 PASS #2 & 3 PASS PRIMARY # 1 PASS SECONDARY # 2 PASS SECONDARY # 3 PASS SECONDARY UV CHANNEL FREE TKN ALKA FREE TKN ALKA FREE TKN FREE TKN ALKA FREE TKN FREE TKN FREE TKN ALKA FREE TKN FREE TKN FREE TKN FREE TEMP ph UN-IONIZEDTKN NO3 NO2 ALKA NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH Jun 21-Jun 22-Jun 23-Jun 24-Jun 25-Jun Jun 27-Jun 28-Jun 29-Jun 30-Jun 01-Jul 02-Jul 03-Jul Jul 05-Jul Jul 07-Jul 08-Jul 09-Jul Jul 11-Jul Jul 13-Jul 14-Jul 15-Jul 16-Jul Jul 18-Jul Jul 20-Jul 21-Jul 22-Jul 23-Jul Jul 25-Jul Jul 27-Jul 28-Jul 29-Jul 30-Jul Jul 01-Aug Aug 03-Aug 04-Aug 05-Aug 06-Aug 07-Aug Aug 09-Aug Aug 11-Aug 12-Aug 13-Aug Aug 15-Aug

21 GREENWAY 2012 NITROGEN ANALYSES REPORT CITY OF LONDON PLANT: GREENWAY NOTE: ALL RESULTS IN PPM AS "N" ENVIRONMENTAL SERVICES DEPARTMENT TKN - TOTAL KJELDAHL NITROGEN DATE # 1 SECTION # 2 SECTION # 3 SECTION RAW PRIMARY SECONDARY PRIMARY #1 PASS #2 & 3 PASS PRIMARY # 1 PASS SECONDARY # 2 PASS SECONDARY # 3 PASS SECONDARY UV CHANNEL FREE TKN ALKA FREE TKN ALKA FREE TKN FREE TKN ALKA FREE TKN FREE TKN FREE TKN ALKA FREE TKN FREE TKN FREE TKN FREE TEMP ph UN-IONIZEDTKN NO3 NO2 ALKA NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH Aug 17-Aug 18-Aug 19-Aug 20-Aug Aug 22-Aug Aug 24-Aug 25-Aug 26-Aug 27-Aug Aug Aug 30-Aug 31-Aug 01-Sep 02-Sep 03-Sep 04-Sep Sep Sep Sep 08-Sep 09-Sep 10-Sep Sep Sep Sep 14-Sep 15-Sep 16-Sep 17-Sep Sep 19-Sep Sep Sep 22-Sep 23-Sep 24-Sep Sep 26-Sep Sep 28-Sep 29-Sep 30-Sep 01-Oct Oct 03-Oct Oct 05-Oct 06-Oct 07-Oct 08-Oct 09-Oct Oct 11-Oct

22 GREENWAY 2012 NITROGEN ANALYSES REPORT CITY OF LONDON PLANT: GREENWAY NOTE: ALL RESULTS IN PPM AS "N" ENVIRONMENTAL SERVICES DEPARTMENT TKN - TOTAL KJELDAHL NITROGEN DATE # 1 SECTION # 2 SECTION # 3 SECTION RAW PRIMARY SECONDARY PRIMARY #1 PASS #2 & 3 PASS PRIMARY # 1 PASS SECONDARY # 2 PASS SECONDARY # 3 PASS SECONDARY UV CHANNEL FREE TKN ALKA FREE TKN ALKA FREE TKN FREE TKN ALKA FREE TKN FREE TKN FREE TKN ALKA FREE TKN FREE TKN FREE TKN FREE TEMP ph UN-IONIZEDTKN NO3 NO2 ALKA NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH Oct 13-Oct 14-Oct 15-Oct Oct 17-Oct Oct 19-Oct 20-Oct 21-Oct 22-Oct Oct 24-Oct Oct 26-Oct 27-Oct 28-Oct 29-Oct Oct 31-Oct Nov 02-Nov 03-Nov 04-Nov 05-Nov Nov 07-Nov Nov 09-Nov 10-Nov 11-Nov 12-Nov Nov 14-Nov Nov 16-Nov 17-Nov 18-Nov 19-Nov Nov Nov 22-Nov 23-Nov 24-Nov 25-Nov 26-Nov Nov 28-Nov Nov 30-Nov 01-Dec 02-Dec 03-Dec Dec 05-Dec Dec 07-Dec

23 GREENWAY 2012 NITROGEN ANALYSES REPORT CITY OF LONDON PLANT: GREENWAY NOTE: ALL RESULTS IN PPM AS "N" ENVIRONMENTAL SERVICES DEPARTMENT TKN - TOTAL KJELDAHL NITROGEN DATE # 1 SECTION # 2 SECTION # 3 SECTION RAW PRIMARY SECONDARY PRIMARY #1 PASS #2 & 3 PASS PRIMARY # 1 PASS SECONDARY # 2 PASS SECONDARY # 3 PASS SECONDARY UV CHANNEL FREE TKN ALKA FREE TKN ALKA FREE TKN FREE TKN ALKA FREE TKN FREE TKN FREE TKN ALKA FREE TKN FREE TKN FREE TKN FREE TEMP ph UN-IONIZEDTKN NO3 NO2 ALKA NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH3 NH Dec 09-Dec 10-Dec Dec 12-Dec Dec 14-Dec 15-Dec 16-Dec 17-Dec Dec 19-Dec Dec 21-Dec 22-Dec 23-Dec 24-Dec 25-Dec 26-Dec Dec 28-Dec 29-Dec 30-Dec 31-Dec AVERAGE MAX MIN # OF SAMPLES

24 SLUDGE TABULATION GREENWAY PCC 2012 SUMMARY PRIMARY SLUDGE SECTION #1 SECTION #2 SECTION #3 D TO HOLDING TANK RETURN SLUDGE RETURN SLUDGE RETURN SLUDGE A T Cubic % ph % (10 3 m 3 /D) M 3 /D (103m3/D) M 3 /D (10 3 m 3 /D) m3 E Meters V S S S S R S O O A W U S A W U S A W U S E O L L E A S O E A S O E A S O M L A I R S P L R S P L R S P L O I T D A T E I A T E I A T E I V D I S T E N D T E N D T E N D E S L O D S O D S O D S D E R E R E R E D S D S D S D (mg/l) (mg/l) (mg/l) PASS 2 PASS 1 PASS 2 PASS 1-Jan ,481 2-Jan ,518 3-Jan , ,264 5, ,485 8,178 4-Jan , ,176 6, ,450 7,959 5-Jan , ,488 8, ,457 8,116 6-Jan , ,508 6, ,287 7,481 7-Jan ,157 8-Jan ,176 9-Jan , ,090 3, ,792 8, Jan , ,778 4, ,464 6, Jan , ,760 6, ,004 6, Jan , ,572 3, ,186 7, Jan , ,080 5, ,018 8, Jan Jan Jan Jan , ,390 10, , Jan , ,356 9, , Jan , ,416 10, , Jan , ,910 9, , Jan , Jan Jan , ,872 8, ,091 5, Jan , ,104 10, , Jan , ,284 9, ,460 5, Jan , ,642 8, ,608 6, Jan , ,822 9, ,307 6, Jan , , Jan , , Jan , ,714 3, ,073 7, Jan , ,566 4, ,799 1-Feb , ,312 7, ,018 2-Feb , ,514 8, ,317 3-Feb , ,278 7, ,102 4-Feb Feb Feb , ,102 6, ,177 6,271 7-Feb , ,232 7, ,211 5,970 8-Feb , ,674 8, ,211 6,685 9-Feb ,728 9, , Feb , ,586 7, , Feb , Feb Feb , ,590 8, ,024 7, Feb , ,292 8, ,031 7, Feb , ,906 7, ,081 7, Feb , ,410 8, , Feb , ,466 8, ,060 8, Feb , Feb , Feb , Feb , ,936 5, ,174 8, Feb , ,890 8, ,732 8, Feb , ,264 8, ,048 7, Feb , ,978 8, , Feb Feb , Feb , ,582 8, ,048 7, Feb , ,154 5, ,551 1-Mar , ,358 9, ,103 2-Mar , ,394 8, ,033 8,013 3-Mar , ,090 4, ,509 4-Mar Mar ,103 6-Mar , ,358 4, ,393 8,437 7-Mar , ,012 4, ,288 9,362 8-Mar , ,628 5, ,157 6,625 9-Mar , ,292 5, , Mar , ,918 3, , Mar Mar Mar , ,056 5, , Mar , ,484 9, , Mar , ,340 5, , Mar , ,302 6, , Mar , ,160 7, , Mar Mar Mar , ,776 8, ,007

25 SLUDGE TABULATION GREENWAY PCC 2012 SUMMARY PRIMARY SLUDGE SECTION #1 SECTION #2 SECTION #3 D TO HOLDING TANK RETURN SLUDGE RETURN SLUDGE RETURN SLUDGE A T Cubic % ph % (10 3 m 3 /D) M 3 /D (103m3/D) M 3 /D (10 3 m 3 /D) m3 E Meters V S S S S R S O O A W U S A W U S A W U S E O L L E A S O E A S O E A S O M L A I R S P L R S P L R S P L O I T D A T E I A T E I A T E I V D I S T E N D T E N D T E N D E S L O D S O D S O D S D E R E R E R E D S D S D S D (mg/l) (mg/l) (mg/l) PASS 2 PASS 1 PASS 2 PASS 21-Mar , ,242 7, , Mar , ,412 6, ,108 12, Mar , ,690 4, ,228 12, Mar , ,062 3, ,216 11, Mar , Mar , Mar , ,668 5, ,200 10, Mar , ,616 4, ,222 10, Mar , ,128 5, ,217 9, Mar , ,912 4, ,263 9, Mar ,470 1-Apr , ,156 4, ,427 8,351 2-Apr ,313 3-Apr , ,830 5, ,289 7,863 4-Apr , ,336 4, ,327 7,794 5-Apr , ,676 4, ,076 6,506 6-Apr-12 1, , ,174 4, ,780 7-Apr Apr Apr Apr Apr , ,866 3, , Apr , ,720 3, , Apr , ,422 1, , Apr , ,272 3, , Apr Apr Apr , ,698 5, , Apr , ,830 5, , Apr , ,040 4, , Apr , ,854 6, ,036 11, Apr , ,064 7, ,431 8, Apr , Apr , Apr , ,634 3, ,540 9, Apr , ,446 5, ,354 8, Apr , ,430 7, ,201 10, Apr , ,694 6, ,175 8, Apr , ,258 7, ,066 7, Apr , Apr May , ,474 7, ,021 2-May , ,782 7, ,530 3-May , ,696 7, ,047 9,686 4-May , ,026 6, ,491 10,591 5-May , ,806 9, ,709 9,990 6-May ,779 7-May ,313 8-May , ,510 8, ,817 8,043 9-May , ,928 9, ,754 7, May , ,444 5, , May , ,034 5, , May , ,112 4, , May May May , ,658 2, , May , ,778 3, , May , ,594 3, , May May , ,800 5, , May May May May , ,248 4, , May , ,668 5, , May , ,806 4, , May , May May May , ,264 6, ,134 11, May , ,400 7, ,325 11, May , ,706 5, ,291 8,777 1-Jun , ,462 6, ,342 2-Jun , ,268 5, ,377 7,846 3-Jun Jun Jun , ,174 3, ,826 6-Jun , ,808 2, ,240 7-Jun , ,108 2, ,557 9,441

26 SLUDGE TABULATION GREENWAY PCC 2012 SUMMARY PRIMARY SLUDGE SECTION #1 SECTION #2 SECTION #3 D TO HOLDING TANK RETURN SLUDGE RETURN SLUDGE RETURN SLUDGE A T Cubic % ph % (10 3 m 3 /D) M 3 /D (103m3/D) M 3 /D (10 3 m 3 /D) m3 E Meters V S S S S R S O O A W U S A W U S A W U S E O L L E A S O E A S O E A S O M L A I R S P L R S P L R S P L O I T D A T E I A T E I A T E I V D I S T E N D T E N D T E N D E S L O D S O D S O D S D E R E R E R E D S D S D S D (mg/l) (mg/l) (mg/l) PASS 2 PASS 1 PASS 2 PASS 8-Jun , ,404 4, ,331 7,052 9-Jun , ,386 3, ,112 9, Jun ,404 4, ,512 7, Jun , Jun , ,500 3, ,067 6, Jun , ,694 4, , Jun , ,280 3, , Jun , ,662 2, , Jun , ,776 3, , Jun Jun Jun , ,930 3, , Jun , ,866 3, , Jun , ,722 5, , Jun , ,580 6, , Jun , ,880 7, , Jun Jun Jun , ,948 5, , Jun , ,758 5, , Jun , ,540 6, ,316 8, Jun , ,508 7, ,506 8, Jun , ,220 6, ,704 8,237 1-Jul ,719 2-Jul ,551 3-Jul ,496 4-Jul , ,300 4, ,327 5,957 5-Jul , ,850 5, ,927 6-Jul , ,170 6, ,850 7-Jul , ,860 6, ,420 8-Jul ,614 9-Jul , Jul , ,250 4, ,121 7, Jul , ,380 6, ,305 7, Jul , ,570 3, , Jul , ,470 5, , Jul , ,100 3, ,408 5, Jul , Jul , Jul , ,180 5, , Jul , ,240 4, , Jul , ,540 5, , Jul , ,230 4, , Jul , ,280 4, , Jul Jul Jul , ,950 5, , Jul , ,050 4, , Jul , ,840 5, , Jul , ,810 5, ,231 8, Jul , ,630 6, ,207 9, Jul , Jul , Jul , ,170 4, ,665 7,973 1-Aug , , ,214 7,970 2-Aug , ,050 4, ,428 7,480 3-Aug , ,080 5, ,029 7,167 4-Aug , ,580 2, ,820 5-Aug ,504 6-Aug ,635 7-Aug ,556 8-Aug , ,080 3, ,507 6,563 9-Aug , ,650 3, ,316 5, Aug ,040 2, ,156 5, Aug , ,090 2, , Aug Aug , Aug , ,770 4, , Aug , ,830 4, , Aug , ,180 4, Aug , ,830 4, , Aug , ,980 3, , Aug , Aug , Aug , ,410 2, ,269 4, Aug , ,370 3, ,139 5, Aug , ,830 4, ,078 6, Aug , ,100 4, , Aug , ,290 5, ,800

27 SLUDGE TABULATION GREENWAY PCC 2012 SUMMARY PRIMARY SLUDGE SECTION #1 SECTION #2 SECTION #3 D TO HOLDING TANK RETURN SLUDGE RETURN SLUDGE RETURN SLUDGE A T Cubic % ph % (10 3 m 3 /D) M 3 /D (103m3/D) M 3 /D (10 3 m 3 /D) m3 E Meters V S S S S R S O O A W U S A W U S A W U S E O L L E A S O E A S O E A S O M L A I R S P L R S P L R S P L O I T D A T E I A T E I A T E I V D I S T E N D T E N D T E N D E S L O D S O D S O D S D E R E R E R E D S D S D S D (mg/l) (mg/l) (mg/l) PASS 2 PASS 1 PASS 2 PASS 26-Aug Aug Aug , ,120 4, ,053 5, Aug , ,430 2, , Aug , ,300 3, , Aug , ,230 5, ,316 1-Sep , ,720 3, ,397 2-Sep Sep Sep Sep , ,750 3, ,297 6-Sep , ,658 4, ,593 7-Sep , ,130 5, ,243 8-Sep , ,546 4, ,057 9-Sep , Sep , Sep , ,512 4, ,328 7, Sep , ,830 5, ,157 7, Sep , ,950 6, ,077 6, Sep , ,566 4, ,030 6, Sep , ,508 3, , Sep Sep Sep , ,328 2, , Sep , ,780 4, , Sep , ,248 3, , Sep , ,836 4, , Sep , ,400 5, , Sep Sep Sep , ,426 5, , Sep , ,068 3, , Sep , ,528 5, , Sep , ,534 8, , Sep , ,186 5, , Sep Oct Oct , ,068 4, ,715 3-Oct , ,424 3, ,981 4-Oct , ,738 4, ,857 5-Oct , ,250 4, ,179 6-Oct , ,270 4, ,748 7-Oct Oct Oct Oct , ,914 3, , Oct , ,272 2, , Oct , ,950 3, , Oct , ,428 3, , Oct Oct Oct , ,242 4, ,094 11, Oct , ,984 3, , Oct , ,260 4, , Oct , ,756 4, , Oct , ,594 5, , Oct Oct Oct , ,908 4, , Oct , ,782 4, , Oct , ,104 4, , Oct , ,410 3, , Oct , ,254 4, , Oct Oct Oct , ,116 6, , Oct , ,800 7, ,590 1-Nov , ,474 6, ,477 2-Nov , ,390 7, ,333 3-Nov , ,996 7, ,881 4-Nov Nov Nov , ,106 7, ,737 7-Nov , ,196 7, ,240 8-Nov , ,470 5, ,781 9-Nov , ,000 7, , Nov , ,072 6, ,008 11, Nov Nov

28 SLUDGE TABULATION GREENWAY PCC 2012 SUMMARY PRIMARY SLUDGE SECTION #1 SECTION #2 SECTION #3 D TO HOLDING TANK RETURN SLUDGE RETURN SLUDGE RETURN SLUDGE A T Cubic % ph % (10 3 m 3 /D) M 3 /D (103m3/D) M 3 /D (10 3 m 3 /D) m3 E Meters V S S S S R S O O A W U S A W U S A W U S E O L L E A S O E A S O E A S O M L A I R S P L R S P L R S P L O I T D A T E I A T E I A T E I V D I S T E N D T E N D T E N D E S L O D S O D S O D S D E R E R E R E D S D S D S D (mg/l) (mg/l) (mg/l) PASS 2 PASS 1 PASS 2 PASS 13-Nov , ,200 6, , Nov , ,510 6, , Nov , ,300 6, , Nov , ,062 6, ,327 10, Nov , ,392 5, ,299 10, Nov , Nov , Nov , ,760 5, , Nov , ,450 5, , Nov , ,748 5, , Nov , ,296 4, , Nov , ,168 3, , Nov Nov Nov , ,628 4, , Nov , ,488 4, , Nov , ,310 4, , Nov , ,190 4, ,910 1-Dec , ,170 4, ,158 2-Dec Dec Dec , ,114 4, ,945 5-Dec , ,888 4, ,742 6-Dec , ,766 4, ,321 7-Dec , ,040 5, ,207 8-Dec , ,382 5, ,397 9-Dec Dec Dec , ,852 4, , Dec , ,048 5, , Dec , ,524 4, , Dec , ,040 5, , Dec , ,340 5, , Dec Dec Dec , ,824 5, , Dec , ,660 5, , Dec , ,400 6, ,366 4, Dec , ,950 4, ,447 8, Dec , ,900 7, ,553 7, Dec , Dec , Dec , Dec , Dec Dec , ,946 3, , Dec Dec Dec TOTAL 189, , , ,800 AVERAGE , ,027 5, ,324 MAX , ,390 10, ,037 13,960 MIN ,040 1, # OF SAMPLES

29 GREENWAY PCP SLUDGE ANALYSES DATE SOLIDS Cd Cr Cu Fe Ni Zn Pb Mn Al PHOSPHOROUS POTASSIUM ARSENIC (percent) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) 5-Jan , Feb < Mar Apr < May Jun , Jul < Sep Oct Nov < Dec AVERAGE <0.03 LIMITS FOR LAND APPLICATION (MG/KG OF SOLIDS) 34 2,800 1, ,200 1, ACTUAL , ,620 21,978 2,816 <1

30 GREENWAY PCP SLUDGE ANALYSES continued DATE 5-Jan-12 7-Feb Mar-12 5-Apr-12 1-May-12 5-Jun Jul-12 6-Sep Oct Nov Dec-12 COBALT MERCURY MOLYBDENUM SELENIUM AMMONIA TKN NITRATE PHENOLS Hexa valent Cr TOC (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) % < , < AVERAGE (MG/KG OF SOLIDS) ACTUAL < , < LIMITS FOR LAND APPLICATION <6.6 7,431 46, <0.2 5,000

31 2012 INCINERATION OPERATION RECORD CITY OF LONDON POLLUTION CONTROL OPERATIONS DIVISION-LABORATORY SERVICES ENVIRONMENTAL SERVICES DEPARTMENT MONTH FLUID BED INCINERATOR TO BIOSET TOTAL SOLIDS TOTAL TOTAL GAS GAS COSTS HOURS TOTAL OIL OIL COSTS TOTAL TOTAL CAKE CONTENT DRY SOLIDS GAS CONSUMPTION PER TONNE OPERATED OIL X 10 CONSUMPTION PER TON DRY SOLIDS (TONNES) % (TONNES) (CU. M.) (CU. M./TDS) DRY SOLIDS (LITRES) (LITERS/TDS) DRY SOLIDS (TONNES) (TONNES) JANUARY 6, , $ FEBRUARY 7, , $ MARCH 5, , $ APRIL 5, , $ MAY 6, , $ JUNE 4, , $ JULY 5, , $ AUGUST 4, , $ SEPTEMBER 5, , $ OCTOBER 5, , $ NOVEMBER 5, , $ DECEMBER 5, , $ TOTAL 68,649 17,177 1,094,164 6, , AVERAGE 5, , $ TOTAL GAS CONSUMPTION (CU. FT.) 10,941,643 TOTAL OIL CONSUMPTION (LITERS) 0 Sludge processed in BIOSET 1,008 TONNES WET

32 2012 INCINERATION OPERATION RECORD CITY OF LONDON POLLUTION CONTROL ENGINEERING DIVISION - LABORATORY SERV GAS COSTS: $0.38 /CU. M. ENVIRONMENTAL SERVICES DEPARTMENT #2 DIESEL FUEL COST $ /LITER DATE FLUID BED INCINERATOR BIOSET HAULED TOTAL SOLIDS TOTAL TOTAL GAS GAS COSTS HOURS TOTAL OIL OIL COSTS TOTAL TOTAL CAKE CONTENT DRY SOLIDS GAS CONSUMPTION PER TON OPERATED OIL X 10 CONSUMPTION PER TON DRY SOLIDS (TONNES) % (TONNES) (CU. M.) (CU. M./TDS) DRY SOLIDS (LITERS) (LITERS/TDS) DRY SOLIDS (TONNES) (TONNES) 1-Jan , $ Jan-12 3-Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan , $ Jan Jan , $ Feb , $ Feb , $ Feb , $ Feb , $ Feb , $ Feb , $ Feb-12 8-Feb-12 9-Feb , $ Feb , $ Feb , $ Feb , $ Feb , $ Feb , $ Feb , $ Feb , $ Feb $ Feb , $ Feb , $ Feb , $ Feb , $ Feb , $ Feb , $ Feb , $ Feb , $ Feb , $ Feb , $ Feb , $ Feb , $ Mar , $ Mar , $ Mar , $ Mar , $ Mar , $ Mar , $ Mar , $ Mar , $ Mar , $ Mar Mar Mar Mar Mar Mar Mar

33 2012 INCINERATION OPERATION RECORD CITY OF LONDON POLLUTION CONTROL ENGINEERING DIVISION - LABORATORY SERV GAS COSTS: $0.38 /CU. M. ENVIRONMENTAL SERVICES DEPARTMENT #2 DIESEL FUEL COST $ /LITER DATE FLUID BED INCINERATOR BIOSET HAULED TOTAL SOLIDS TOTAL TOTAL GAS GAS COSTS HOURS TOTAL OIL OIL COSTS TOTAL TOTAL CAKE CONTENT DRY SOLIDS GAS CONSUMPTION PER TON OPERATED OIL X 10 CONSUMPTION PER TON DRY SOLIDS (TONNES) % (TONNES) (CU. M.) (CU. M./TDS) DRY SOLIDS (LITERS) (LITERS/TDS) DRY SOLIDS (TONNES) (TONNES) 17-Mar , $ Mar , $ Mar , $ Mar , $ Mar , $ Mar , $ Mar , $ Mar , $ Mar , $ Mar , $ Mar , $ Mar , $ Mar , $ Mar , $ Mar , $ Apr , $ Apr , $ Apr , $ Apr , $ Apr , $ Apr , $ Apr , $ Apr $ Apr , $ Apr , $ Apr $ Apr , $ Apr , $ Apr , $ Apr , $ Apr Apr Apr , $ Apr $ Apr , $ Apr , $ Apr , $ Apr , $ Apr , $ Apr , $ Apr , $ Apr , $ Apr , $ Apr , $ Apr , $ May , $ May , $ May , $ May , $ May , $ May , $ May , $ May , $ May , $ May , $ May , $ May , $ May May May $ May $ May $ May $ May , $ May , $ May $ May , $ May , $ May $ May $ May , $ May , $ May , $ May , $ May , $ May , $

34 2012 INCINERATION OPERATION RECORD CITY OF LONDON POLLUTION CONTROL ENGINEERING DIVISION - LABORATORY SERV GAS COSTS: $0.38 /CU. M. ENVIRONMENTAL SERVICES DEPARTMENT #2 DIESEL FUEL COST $ /LITER DATE FLUID BED INCINERATOR BIOSET HAULED TOTAL SOLIDS TOTAL TOTAL GAS GAS COSTS HOURS TOTAL OIL OIL COSTS TOTAL TOTAL CAKE CONTENT DRY SOLIDS GAS CONSUMPTION PER TON OPERATED OIL X 10 CONSUMPTION PER TON DRY SOLIDS (TONNES) % (TONNES) (CU. M.) (CU. M./TDS) DRY SOLIDS (LITERS) (LITERS/TDS) DRY SOLIDS (TONNES) (TONNES) 1-Jun , $ Jun , $ Jun , $ Jun , $ Jun $ Jun , $ Jun , $ Jun , $ Jun , $ Jun , $ Jun , $ Jun , $ Jun , $ Jun , $ Jun , $ Jun $ Jun Jun Jun Jun Jun Jun $ Jun Jun Jun , $ Jun $ Jun , $ Jun , $ Jun , $ Jun , $ Jul , $ Jul , $ Jul , $ Jul , $ Jul , $ Jul , $ Jul , $ Jul , $ Jul , $ Jul , $ Jul , $ Jul $ Jul , $ Jul , $ Jul , $ Jul $ Jul $ Jul , $ Jul $ Jul , $ Jul $ Jul $ Jul Jul Jul , $ Jul , $ Jul , $ Jul , $ Jul , $ Jul , $ Jul , $ Aug , $ Aug $ Aug $ Aug , $ Aug , $ Aug , $ Aug , $ Aug , $ Aug , $ Aug , $ Aug , $ Aug , $ Aug , $ Aug $ Aug , $

35 2012 INCINERATION OPERATION RECORD CITY OF LONDON POLLUTION CONTROL ENGINEERING DIVISION - LABORATORY SERV GAS COSTS: $0.38 /CU. M. ENVIRONMENTAL SERVICES DEPARTMENT #2 DIESEL FUEL COST $ /LITER DATE FLUID BED INCINERATOR BIOSET HAULED TOTAL SOLIDS TOTAL TOTAL GAS GAS COSTS HOURS TOTAL OIL OIL COSTS TOTAL TOTAL CAKE CONTENT DRY SOLIDS GAS CONSUMPTION PER TON OPERATED OIL X 10 CONSUMPTION PER TON DRY SOLIDS (TONNES) % (TONNES) (CU. M.) (CU. M./TDS) DRY SOLIDS (LITERS) (LITERS/TDS) DRY SOLIDS (TONNES) (TONNES) 16-Aug , $ Aug , $ Aug , $ Aug , $ Aug , $ Aug , $ Aug , $ Aug , $ Aug , $ Aug Aug Aug Aug Aug Aug Aug $ Sep-12 2-Sep , $ Sep , $ Sep , $ Sep $ Sep $ Sep , $ Sep , $ Sep , $ Sep , $ Sep , $ Sep , $ Sep , $ Sep , $ Sep , $ Sep , $ Sep , $ Sep , $ Sep $ Sep , $ Sep , $ Sep , $ Sep , $ Sep , $ Sep $ Sep $ Sep , $ Sep , $ Sep , $ Sep , $ Oct , $ Oct , $ Oct $ Oct $ Oct $ Oct $ Oct , $ Oct-12 7,701 9-Oct , $ Oct $ Oct $ Oct $ Oct , $ Oct-12 6, Oct , $ Oct , $ Oct $ Oct , $ Oct , $ Oct , $ Oct , $ Oct-12 2, Oct , $ Oct , $ Oct $ Oct , $ Oct , $ Oct , $ Oct-12 5, Oct , $

36 2012 INCINERATION OPERATION RECORD CITY OF LONDON POLLUTION CONTROL ENGINEERING DIVISION - LABORATORY SERV GAS COSTS: $0.38 /CU. M. ENVIRONMENTAL SERVICES DEPARTMENT #2 DIESEL FUEL COST $ /LITER DATE FLUID BED INCINERATOR BIOSET HAULED TOTAL SOLIDS TOTAL TOTAL GAS GAS COSTS HOURS TOTAL OIL OIL COSTS TOTAL TOTAL CAKE CONTENT DRY SOLIDS GAS CONSUMPTION PER TON OPERATED OIL X 10 CONSUMPTION PER TON DRY SOLIDS (TONNES) % (TONNES) (CU. M.) (CU. M./TDS) DRY SOLIDS (LITERS) (LITERS/TDS) DRY SOLIDS (TONNES) (TONNES) 31-Oct , $ Nov , $ Nov , $ Nov , $ Nov , $ Nov , $ Nov , $ Nov-12 8-Nov , $ Nov , $ Nov , $ Nov , $ Nov , $ Nov , $ Nov , $ Nov , $ Nov , $ Nov , $ Nov , $ Nov , $ Nov $ Nov , $ Nov , $ Nov , $ Nov , $ Nov , $ Nov , $ Nov $ Nov , $ Nov , $ Nov , $ Dec , $ Dec , $ Dec , $ Dec $ Dec , $ Dec , $ Dec , $ Dec Dec Dec Dec Dec Dec Dec , Dec ,262 6,814 $2, Dec , $ Dec , $ Dec , $ Dec , $ Dec , $ Dec , $ Dec , $ Dec , $ Dec , $ Dec , $ Dec , $ Dec , $ Dec , $ Dec , $ Dec Dec-12 TOTAL 68,649 17, ,094,164 6,943 4,801 1,235 AVERAGE , $

37 CITV OF LONDON ENVIRONMENTAL SERVICE INQUIRY ANT' HËQUEST FORM?ff&7ffi Rêaeived froin Flle No. 'lz-nneå!$&, Address... Telephone No.e-J Recelved by,ff Verþal Telephone Radio (Locatlon) ff n 'Wl:illnn H.t" öil Referred to *Action Taken.r.t,.1. "(,,.,..,,... t. KØ ã; ÇÞä" Radio I Co.mpletion Date Form No.0314 (HËV tlt moro 6paco ê rgqulrod uao rgv na sldg of sho6t. oompleled ralurn to D vfelon

38 I CITV OF LONDÖN ENVIRONMENÏAL SERVICË NAU RV AND REQUE$T FOHM T ü,&;,v 7 Flle No. RecoiVed Trom Address rime.ü Telephone Nor hecelvod by "lnqulsy.or RËQUEST at. Á), Verbal Telephone Radlo (l-ocatlon) ü K n Wir,',,MÞ; d ööu ìr"ytgttt, Referred to...,... reþphone, ( Radto ';

39 ctty of tondoìl ENVIRONMENTAL SERVICË INOUIHY ANÞ' REQUEST FONM &NÑl,?NW ìs{ës Fï\ y Flle Nor Drvision..ü5dîK I tmê.fte+eived nddr*s$ Têlqphone:No. Recelved by TINQUIRY or Verbal relephone ÞË Radlo,,:(Locgtlo-n) Çcmpfetlon nats Signaturel Form No, 0314 {FËV. 09-SSl *lf mors opaoe ls requlred uoo roverûe olds ol oñeol. comblqted return to Dlv[slon

40 CITV O,F.LONÞ,ON ENVIHONMËNTRT..$ENVIEH : INOIJIH.Y ANÞ REOUES.T.F^RM ffiffirsffi Fite No. Þlvlsf*n,.,,.,;., i..,,,";,,;. ;;;,,,:.,,;,, lir.;r:.r,.rri' l;;' ;:ar':' ;..::,.,,i1 "e l5 a'm' Tlme..,,d-.,,...,",,,*B.nif" V$tbal., ' :ll EIeÞhtin-e,, Htd..o.,., :{tbqaticin},,1'1,,, r:l LJ. lff:l '. r{ :: ffi.it'.., "..'...'..,...'''.e' J,,lr * '1\. *,"'..ä. ';";';""""' ;'r' "rrr'41 ' ðl'l Þ $ì t{#: v {fr ñ., i}.," {{ Completlon Date ry iér ffi, "ø":n.:"þt"ík, 'll moro epdcà lr roqqlrod uge leverèe oldþ ol ehoãt, Form No; OSf4 (RËV 09.95I When completed rolurn lo Ðlvlelon

41 GITV OJ,.l;OND-Öht ENvtRoN[4añrnu',senVrCe,:.: INQUIRY AND REOUEST FORM ffi ffi ä'.s'r File No,?ÉsF1 ^ r*) "d-"l-r ä'ffi- I ; tmê.,,,.{.,,,., i..,...; fp.m,/ Beçeived fioüt,, Addre$'Þ.;,..i,i,i Teleft-hö.,hê No ;Vørba!,.r,,,, EI,:,. Telephono,ì,,ffi Hâ.dio, ',,.,,:'.,fl :. (Locatlo,h).,,...,,..4,..., /{:,t_:,, ñ*ffiffiffidffi: :.:##"]::#fflffip g j''s'þ,ffi ",,i,;,*.#k*##n-,.æ,*jr*,,,',..,,;,',. ffi,.. &,,.*,.,-; ',,,,,. -ffi {#*.,,,o,þ.s.1f),1.*-,..ç &Jj,.,,,,.,,. Ñ. Ç;. :s.ffi {:," ",,,fiç}1,þ*,.f,í*åj;il:rr,ç'ç"c.r.*, {:l-,. Referred to..,.,..,.,.,,r,..,,... :,.,.,.,.,...,...,,..,.,..;,. *açrlnn îakën..,i,.-þtl.þ.,.'",..þ, t. fg,,:,.,,;;,,t.êl Þhone'1[',. Rãdi.o,tü,,..., d. Ë)#trfà ".,,,{3,..K,-.,,.**, * å=ff :,,, r, r*i nh^i-- U I n'l Completlon Date.,.\#- \:.,,,.Íf,, l.{.':: *Ë $ î,'"...s, '.. tl'',(!; a,m, Siünntura ",:,. 'll Form No; 08f4 (REV ) ñorg,dprcþ ]s' ioqufród uðo lovoréo :e de., ol hðet, When completed rolurn lo Dlglelon

42 ËtTY OF LOÌtnO.N, ENVIRONMËNTAL $ERVICE INOUIRY ANf} RECUEST FOHM "ìì f\ d\ ** $1. Flle No. liecç.iigd:f,èaf.r', Dlvisfon,,#.{"',#,, ',, {?} â'm' trme Áddr-$ns,,".,,1'..uu..'.,',.' -] - T'eiep.h'ons,NÞ. Flecelved by.. VrÞiþal Telephone Radio n K n,,,:,.rr,.; t.ri r', i- ',:,,. r -:, r, i,:.':,,,4 ( tn.i' È'\, r t" 4:\ Signature F rm No.0314 {FËV 09;95) rlf moro gpqoo Is requlred uss l Yofso oldg of ah et. Whon complgtsd relurn to Þlvl lrrn