INFORMATION TO CONSULTANTS for. (C3) RFP E CBJ Biosolids Belt Dryer System. 155 South Seward Street Juneau, Alaska 99801

Transcription

1 INFORMATION TO CONSULTANTS for ENGINEERING DEPARTMENT (C3) RFP E CBJ Biosolids Belt Dryer System ISSUED BY: City and Borough of Juneau ENGINEERING DEPARTMENT 155 South Seward Street Juneau, Alaska Date Issued: June 9, 2015 The following information is posted online. Please refer to the CBJ Engineering Contracts Division webpage at: This is not an addendum. INFORMATION ITEMS: Question: We understand that a CBJ sent samples to Andritz to have them study the dewaterability of the Juneau sludge. I understand this was a study that was done with an Andritz centrifuge recently. Could you please send a copy of these dewatering test results to us so we could review? Answer: Two lab reports performed on sludge from the Juneau Douglas Wastewater Treatment Plant and the Mendenhall Wastewater Treatment Planta are attached. These results represent two sludge samples taken on December 3, 2014 and shall be used for informational purposes only. The samples are not representative of all sludge that will be treated by a belt dryer system; variations in sludge occur. The dryer performance criteria in the RFP establish the parameters for operation and treatment. Attachments: Andritz Separation Lab Report No.:L-12554, dated December 15, 2014 Andritz Separation Lab Report No. L-12555, dated December 17, 2014

2 LAB REPORT Report No.: L Opportunity No.: Application: Division: 41 Product Home: 4417, 4418 Date Report Issued: December 15, 2104 Date Sample Received: December 3, 2014 Author: Phani K. Peddi Copy: Piché, Hausegger Customer: City Borough of Juneau Plant name: Juneau-Douglas Treatment Plant Attention: Ms. Samantha Stoughtenger Address: 2009 Radcliffe Road City, State, Zip: Juneau, AK Phone: (907) ANDRITZ Rep.: APSCO LLC Attention: Mr. Dale McBain Address: th Street City, State, Zip: Kirkland, WA Phone: (206) dmcbain@apsoc-llc.com ANDRITZ Separation Inc. Area Sales Manager: Mr. Denis Piché Address: 1010 Commercial Blvd. S. City, State, Zip: Arlington, TX Phone: (403) Denis.piche@andritz.com Confidential document. All rights reserved. No duplication or disclosure to third parties permitted without the written consent of ANDRITZ.

3 Table of contents Introduction... 1 Objectives... 1 Conclusions Test Data A. Sample Analysis... 5 B. Polymers Tested... 6 C. Belt Filter Press Test Results... 6 D. Centrifuge Test Results... 7 Discussion... 8 Attachments A. Photographs... 9 B. Lab Sample Data Sheets S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12554\revision 1 Juneau, AK, City & Borough of Juneau-Douglas TP, Opp# , L Lab Report.docx

4 Opportunity No.: Laboratory No.: L ANDRITZ LABORATORY REPORT COMPANY : City and Borough of Juneau Juneau, AK PROJECT : Juneau-Douglas Treatment Plant SAMPLE TYPE : Aerobically Digested Sludge DATE : December 15, 2014 Introduction: Five (5) gallons of sludge and dewatered cake samples were received in the ANDRITZ laboratory from the Borough of Juneau AK, on December 3, 2014, for Centrifuge and Belt Filter Press (BFP) dewatering tests. The sludge sample was collected at Juneau-Douglas Treatment Plant (JDTP). The JDTP, with a design capacity of 2.76 million gallons a day (MGD) treats an average flow of 0.96 MGD. The influent wastewater is treated in aerated basins after coarse screening and grit removal. Sludge from the clarification process is digested aerobically and dewatered using a BFP (manufacturer and model unknown). The customer is inquiring into replacing the existing BFP with an ANDRITZ High Performance Decanter Centrifuge to produce drier cake for drying or incineration. Objectives: The specific objectives of these laboratory tests were: 1. Analyze the sludge and cake sample for physical characteristics. 2. Conduct polymer evaluation tests to select the most effective polymer for centrifuge and BFP dewatering. 3. Conduct ANDRITZ 2.0m SMX -S8 Quantum BFP simulation tests and determine the achievable cake dryness from BFP dewatering. 4. Conduct Centrifuge spin-down tests and determine the anticipated cake dryness from an ANDRITZ Decanter Centrifuge. S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12554\revision 1 Juneau, AK, City & Borough of Juneau-Douglas TP, Opp# , L Lab Report.docx Page 1

5 Opportunity No.: Laboratory No.: L Conclusions: The results of laboratory testing indicated that: 1. The sample was brown in color and emitted earthy odors. It contained 0.88%TS (Total Solids) and 0.81%TSS (Total Suspended Solids), the volatile solids content was 80.5% of TS and the Capillary Suction Time (CST) was 26.0 seconds. A particle size analysis conducted on the sludge indicated a fine particle size with 83.4% of TSS less than 45 microns. Centrifuge spin-down test conducted on the raw sample produced a plug solids content of 6.1%TS and a clear supernatant. The sludge sample (as received) and spin-down tubes are shown below: Sludge / ton Spin-down Tubes The cake sample received had a dryness of 14.5%TS. 2. Several emulsion and dry polymers were tested on the sludge sample to select the most effective polymer for BFP and centrifuge dewatering. Ashland 857BS is the most effective dry polymer tested at active dosage rates of 14±1 and 25±1 lbs/ton TSS for BFP and Centrifuge dewatering respectively. Polydyne C9530 is the most effective emulsion polymer tested at 27±1 and 40±1 active lbs/ton TSS for both BFP and Centrifuge dewatering respectively. Emulsion polymers produced considerably higher cake dryness (2 3 percentage points) compared to the dry polymers but the dosage rate was high. 3. ANDRITZ 2.0m SMX -S8 Quantum BFP simulation test was conducted on the sludge using C-9530 and 857BS. A cake dryness of 15.9%TS was achieved using C9530 (27.7 active lbs/ton TSS) at a throughput of 365 lbs/hr DS (83 GPM), and 14.9%TS at a throughout of 200 lbs/hr DS when testing Ashland 857BS. Cake produced using 857BS was thin and difficult to doctor compared to that produced using C The simulation tests were conducted at a low speed (4 FPM) and belt tension (35 PLI). S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12554\revision 1 Juneau, AK, City & Borough of Juneau-Douglas TP, Opp# , L Lab Report.docx Page 2

6 Discharge Solids (%TS) Opportunity No.: Laboratory No.: L The cake produced using 857BS is shown below: BFP Cake Sample Blinded Filter Cloth Drainage curves conducted on the sample conditioned with different polymers produced a discharge solids content of 4 5%TS. The sample conditioned with C-9530 drained at a higher rate compared to 857BS. The drainage curves are shown below: L C-9530 (24.4 active lbs/ton TS) 857BS (11.4 active lbs/ton TS) Time (Seconds) S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12554\revision 1 Juneau, AK, City & Borough of Juneau-Douglas TP, Opp# , L Lab Report.docx Page 3

7 Opportunity No.: Laboratory No.: L Filtrate produced from the drainage tests are shown below: Filtrates (from left: C-9530 and 857BS) 4. Centrifuge spin-down tests were conducted on the sample conditioned with C-9530 and 857BS. C-9530 produced a cake dryness of 19 22%TS at a dosage of 40.0 active lbs/ton TSS, and 17 19%TS at a dosage of 24.8 active lbs/ton TSS with Ashland 857BS. Detailed centrifuge test results are shown in the test data section S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12554\revision 1 Juneau, AK, City & Borough of Juneau-Douglas TP, Opp# , L Lab Report.docx Page 4

8 Opportunity No.: Laboratory No.: L Test Data: A. Sample Analysis Total Solids 105 o C) 0.88 Suspended Solids 105 o C) 0.81 Plug Solids 3000G s and 5 minutes) C 6.8 Specific Gravity 1.0 Ash Content of Total Solids (% of TS) 19.5 Volatile Solids Content (% of TS) 80.5 Capillary Suction Time (sec) 26.0 Screened Solids: Description +30 Mesh Fraction (% of SS) 2.3 Debris, Hair 30 x 50 Mesh Fraction (% of SS) 2.9 Debris, Fiber 50 x100 Mesh Fraction (% of SS) 3.3 Grit, Fine Fiber 100 x 140 Mesh Fraction (% of SS) 2.9 Grit, Fine Fiber 140 x 230 Mesh Fraction (% of SS) 3.5 Biomass 230 x 325 Mesh Fraction (% of SS) 1.8 Biomass -325 Mesh Fraction (% of SS) 83.4 Sludge Volume Index (SVI ml/g) 124 Settled Solids ( min) 1000 Color Brown Odor Earthy S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12554\revision 1 Juneau, AK, City & Borough of Juneau-Douglas TP, Opp# , L Lab Report.docx Page 5

9 Opportunity No.: Laboratory No.: L B. Polymers Tested Ashland : K148L, K274FLX, 857BS BASF : 7878FS40, 8868FS, 7557, 8185 Polydyne : C-6237, C-6266, C-9530, C-3232, C-3282, C-3286, C-3295 C. Belt Filter Press Test Results Test Temperature ( F) Ambient Tested Polymer C BS Makeup Polymer Dilution (%) Injection Polymer Dilution (%) Neat Polymer Dosage (lbs/ton TS) Active Polymer Dosage (lbs/ton TS) Recommended Belt Type IFC 6093 BFP Type 2.0m SMX -S8 Quantum Throughput (lb TS/hr) Throughput (GPM) Solids Capture (%SS 1%) Belt Speed (FPM) 4 4 Belt Tension (PLI) Cake Thickness (mm) 7 4 Cake Solids (%TS) S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12554\revision 1 Juneau, AK, City & Borough of Juneau-Douglas TP, Opp# , L Lab Report.docx Page 6

10 Opportunity No.: Laboratory No.: L D. Centrifuge Test Results Spin Time (Minutes) G Force Type Of Test Polymer Type Polymer Dosage Rate (active lbs/ton) Plug Solids (%TS) Glass Tube None Anticipated Cake Solids (%TS) Glass Tube C Screen C Screen C Screen C Spin Time (Minutes) G Force Type Of Test Polymer Type Polymer Dosage Rate (active lbs/ton) Plug Solids (%TS) Glass Tube None Anticipated Cake Solids (%TS) Glass Tube 857BS Screen 857BS Screen 857BS Screen 857BS S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12554\revision 1 Juneau, AK, City & Borough of Juneau-Douglas TP, Opp# , L Lab Report.docx Page 7

11 Opportunity No.: Laboratory No.: L Discussion: The sludge feed solids content was 0.81%TSS and volatile solids content of 80.5% of TS. The cake sample from the on-site BFP had a dryness of 14.5%TS. BFP simulation tests conducted on the sample produced cake drynesses in the range of 14 16%TS depending on the type of polymer used. Emulsion polymers were more effective but estimated dosage rates were high compared to the dry polymers. Centrifuge dewatering can produce the required cake dryness 20%TS (±1) by using emulsion polymers. Dry polymers also produced higher cake dryness (17 19 %TS) compared to the current BFP dewatering. Attached are photographs of the screen analysis and lab sample data sheets for the sample received for reference and comparison. The remaining untested sludge will be disposed into the city sewer. Phani K. Peddi Process Engineer PKP/sk Attach. Copies of this report have been distributed to the following: Original +1cc/ Lab 1 cc/ Denis Piché Sig Hausegger S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12554\revision 1 Juneau, AK, City & Borough of Juneau-Douglas TP, Opp# , L Lab Report.docx Page 8

12 Opportunity No.: Laboratory No.: L Attachment A Photographs Photo #1: +30 Mesh Fraction Photo #2: 30X50 Mesh Fraction Photo #3: 50X100 Mesh Fraction Photo #4: 100X140 Mesh Fraction Photo #5: 140X230 Mesh Fraction Photo #6: 230X325 Mesh Fraction S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12554\revision 1 Juneau, AK, City & Borough of Juneau-Douglas TP, Opp# , L Lab Report.docx Page 9

13 Opportunity No.: Laboratory No.: L Attachment B Lab Sample Data Sheets S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12554\revision 1 Juneau, AK, City & Borough of Juneau-Douglas TP, Opp# , L Lab Report.docx Page 10

14 Opportunity No.: Laboratory No.: L S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12554\revision 1 Juneau, AK, City & Borough of Juneau-Douglas TP, Opp# , L Lab Report.docx Page 11

15 Opportunity No.: Laboratory No.: L S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12554\revision 1 Juneau, AK, City & Borough of Juneau-Douglas TP, Opp# , L Lab Report.docx Page 12

16 LAB REPORT Report No.: L Opportunity No.: Application: Division: 41 Product Home:4417, 4418 Date Report Issued: December 17, 2014 Date Sample Received: December 3, 2014 Author: Phani K. Peddi Copy: Piché, Hausegger Customer: Borough of Juneau Plant name: Mendenhall WWTP Attention: Ms. Samantha Stoughtenger Address: 2009 Radcliffe Road City, State, Zip: Juneau, AK Phone: (907) ANDRITZ Rep.: APSCO LLC Attention: Mr. Dale McBain Address: th Street City, State, Zip: Kirkland, WA Phone: (206) dmcbain@apsoc-llc.com ANDRITZ Separation Inc. Area Sales Manager: Mr. Denis Piché Address: 1010 Commercial Blvd. S. City, State, Zip: Arlington, TX Phone: (403) Denis.piche@andritz.com Confidential document. All rights reserved. No duplication or disclosure to third parties permitted without the written consent of ANDRITZ.

17 Table of contents Introduction... 1 Objectives... 1 Conclusions Test Data A. Sample Analysis... 5 B. Polymers Tested... 5 C. Belt Filter Press Test Results... 6 D. Centrifuge Press Test Results... 7 Discussion... 8 Attachments A. Photographs... 9 B. Lab Sample Data Sheets S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12555\revision 1 Juneau, AK City & Borough of, Mendenhall WWTP, Opp# , L labreport.docx

18 Opportunity No.: Laboratory No.: L ANDRITZ LABORATORY REPORT COMPANY : City and Borough of Juneau Juneau, AK PROJECT : Mendenhall WWTP SAMPLE TYPE : Waste Activated Sludge (WAS) from Sequence Batch Reactors (SBR) DATE : December 17, 2014 Introduction: Five (5) gallons of sludge and cake samples were received in the ANDRITZ laboratory from the City and Borough of Juneau, AK, on December 3, 2014, for dewatering tests simulating a Belt Filter Press (BFP) and a Decanter Centrifuge. The sludge sample was collected at the Mendenhall Wastewater Treatment Plant (MWWTP). The MWWTP (design flow 3.1 MGD and average flow 2.26 MGD) treats the influent wastewater in Sequence Batch Reactors (SBR) after coarse screening and grit removal without primary treatment. Sludge from the SBR s is dewatered using a BFP (manufacturer and model unknown). The customer is inquiring into replacing the existing BFP with an ANDRITZ High Performance Decanter Centrifuge to produce drier cake for drying or incineration. Objectives: The specific objectives of these laboratory tests were to: 1. Analyze the sludge and cake sample for physical characteristics. 2. Conduct polymer evaluation tests to select the most effective polymer for centrifuge and BFP dewatering. 3. Conduct ANDRITZ 2.0m SMX -S8 Quantum BFP simulation tests and determine the achievable cake dryness from BFP dewatering. 4. Conduct Centrifuge spin-down tests and determine the anticipated cake dryness from an ANDRITZ Decanter Centrifuge. S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12555\revision 1 Juneau, AK City & Borough of, Mendenhall WWTP, Opp# , L labreport.docx Page 1

19 Opportunity No.: Laboratory No.: L Conclusions: The results of laboratory testing indicated that: 1. The sample was brown in color and emitted earthy odors. It had a feed solids content of 0.74%TSS (Total Suspended Solids), the volatiles solids content was 91% of TS (Total Solids) and, the Capillary Suction Time (CST) was 47.0 seconds. It had a fine particle size distribution with 79.6% of TSS less than 45 microns. Centrifuge spin-down test conducted on the raw sample at 3000 G s for 5 minutes produced a plug solids content of 5.6%TS. The sludge (as received) and spin-down tubes are shown below: L Spin-down Tubes The cake sample received had a dryness of 14.5%TS. The sample had a very high volatile solids content compared to typical WAS samples tested in the ANDRITZ laboratory (~80% of TS). Sludges with high volatile solids are difficult to dewater and require high polymer dosage due to its high organic solids content (fats, oils, grease etc.) 2. Ashland 857BS was the most effective dry polymer tested on the sludge at active dosage rates of 15±1 and 18±1 lbs/ton TSS for BFP and centrifuge dewatering. BASF 8868FS was the most effective emulsion polymer tested at 20±1 and 29±1 active lbs/ton TSS for BFP and centrifuge dewatering. Emulsion polymers were more effective in conditioning the sludge and produced higher cake dryness compared to the dry polymers tested. S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12555\revision 1 Juneau, AK City & Borough of, Mendenhall WWTP, Opp# , L labreport.docx Page 2

20 Discharge Solids (%TS) Opportunity No.: Laboratory No.: L ANDRITZ 2.0m SMX -S8 Quantum BFP simulation test conducted on the sludge conditioned with 8868FS at 19.1 active lbs/ton TSS produced a cake dryness of 13.5%TS at 380 lbs/hr DS (100 GPM). The cake produced was thin (5 mm) and spread along the belt. Both sticking and blinding to the cloth were observed. The cake produced from the BFP simulation test is shown below: BFP Cake Blinded Filter Cloth Static Buchner Funnel drainage tests were conducted on the sample conditioned with 8868FS and 857BS. The sample conditioned with 8868FS drained at a higher rate and produced higher discharge solids (4 5%TS) compared to 857BS (2 3%TS). The drainage curves are shown below: L FS (22.6 active lbs/ton TS) 857BS (15.4 active lbs/ton TS) Time (Seconds) S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12555\revision 1 Juneau, AK City & Borough of, Mendenhall WWTP, Opp# , L labreport.docx Page 3

21 Opportunity No.: Laboratory No.: L Filtrates produced from the drainage tests are shown below: Filtrates (from left: 8868FS and 857BS) 4. Centrifuge dewatering tests conducted on the sample conditioned with 8868FS at 28.6 active lbs/ton TSS produced a cake dryness of 17 19%TS. Ashland 857BS produced a dryness of 15±1 %TS at a dosage of 17.9 active lbs/ton TSS. Detailed centrifuge test results are shown in the test data section. S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12555\revision 1 Juneau, AK City & Borough of, Mendenhall WWTP, Opp# , L labreport.docx Page 4

22 Opportunity No.: Laboratory No.: L Test Data: A. Sample Analysis Total Solids 105 o C) 0.78 Suspended Solids 105 o C) 0.84 Plug Solids 3000G s and 5 minutes) C 6.7 Specific Gravity 1.0 Ash Content of Total Solids (% of TS) 9.0 Volatile Solids Content (% of TS) 91.0 Capillary Suction Time (sec) 47.0 Screened Solids: Description +30 Mesh Fraction (% of SS) 1.9 Debris, Hair 30 x 50 Mesh Fraction (% of SS) 4.9 Debris, Fiber 50 x100 Mesh Fraction (% of SS) 3.9 Grit, Fine Fiber 100 x 140 Mesh Fraction (% of SS) 2.5 Grit, Fine Fiber 140 x 230 Mesh Fraction (% of SS) 3.9 Biomass 230 x 325 Mesh Fraction (% of SS) 3.3 Biomass -325 Mesh Fraction (% of SS) 79.6 Sludge Volume Index (SVI ml/g) 118 Settled Solids ( min) 990 Color Odor Brown Earthy B. Polymers Tested Ashland : K148L, K274FLX, 857BS BASF : 7878FS40, 8868FS, 7557, 8185 Polydyne : C-6237, C-6266, C-9530, C-3232, C-3282, C-3286, C-3295 S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12555\revision 1 Juneau, AK City & Borough of, Mendenhall WWTP, Opp# , L labreport.docx Page 5

23 Opportunity No.: Laboratory No.: L C. Belt Filter Press Test Results Test Temperature Ambient Recommended Polymer 8868FS Makeup Polymer Dilution (%) 0.5 Injection Polymer Dilution (%) 0.5 Neat Polymer Dosage (lbs/ton TS) 47.7 Active Polymer Dosage (lbs/ton TS) 19.1 Recommended Belt Type IFC 6093 BFP Type 2.0m SMX -S8 Quantum Throughput (lbs TS/hr) 380 Throughput (GPM) 100 Solids Capture (% SS 1%) 90 Belt Speed (FPM) 7 Belt Tension (PLI) 35 Cake Thickness (mm) 5 Cake Solids (% TS) 13.5 S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12555\revision 1 Juneau, AK City & Borough of, Mendenhall WWTP, Opp# , L labreport.docx Page 6

24 Opportunity No.: Laboratory No.: L D. Centrifuge Test Results Spin Time (Minutes) G Force Type Of Test Polymer Type Polymer Dosage Rate (active lbs/ton) Plug Solids (%TS) Glass Tube None Anticipated Cake Solids (%TS) Glass Tube 8868FS Screen 8868FS Screen 8868FS Screen 8868FS Spin Time (Minutes) G Force Type Of Test Polymer Type Polymer Dosage Rate (active lbs/ton) Plug Solids (%TS) Glass Tube None Anticipated Cake Solids (%TS) Glass Tube 857BS Screen 857BS Screen 857BS Screen 857BS S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12555\revision 1 Juneau, AK City & Borough of, Mendenhall WWTP, Opp# , L labreport.docx Page 7

25 Opportunity No.: Laboratory No.: L Discussion: The sample contained 0.78%TS and 0.74%TSS and had a very high volatile solids content of 91.0% of TS. The BFP simulation test conducted on the sludge sample produced lower cake dryness (13.5%TS) compared to the field dryness (14.5%TS). This may be due to variation in chemical conditioning or throughput considerations. A cake dryness of 17-19%TS can be anticipated from an ANDRITZ Decanter Centrifuge using emulsion polymers. Dry polymers for centrifuge dewatering can also improve the achievable cake dryness from the existing BFP dewatering but, the impact is lower compared to emulsion polymers. Attached are photographs of the screen analysis and lab sample data sheets for the sample received for reference and comparison. The remaining untested sludge will be disposed into the city sewer. Phani K. Peddi Process Engineer PKP/sk Attach. Copies of this report have been distributed to the following: Original +1cc/ Lab 1 cc/ Denis Piché Sig Hausegger S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12555\revision 1 Juneau, AK City & Borough of, Mendenhall WWTP, Opp# , L labreport.docx Page 8

26 Opportunity No.: Laboratory No.: L Attachment A Photographs Photo #1: +30 Mesh Fraction Photo #2: 30X50 Mesh Fraction Photo #3: 50X100 Mesh Fraction Photo #4: 100X140 Mesh Fraction Photo #5: 140X230 Mesh Fraction Photo #6: 230X325 Mesh Fraction S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12555\revision 1 Juneau, AK City & Borough of, Mendenhall WWTP, Opp# , L labreport.docx Page 9

27 Opportunity No.: Laboratory No.: L Attachment B Lab Sample Data sheets S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12555\revision 1 Juneau, AK City & Borough of, Mendenhall WWTP, Opp# , L labreport.docx Page 10

28 Opportunity No.: Laboratory No.: L S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12555\revision 1 Juneau, AK City & Borough of, Mendenhall WWTP, Opp# , L labreport.docx Page 11

29 Opportunity No.: Laboratory No.: L S:\Process\PROJECTS\J\Juneau Alaska Borough of\l-12555\revision 1 Juneau, AK City & Borough of, Mendenhall WWTP, Opp# , L labreport.docx Page 12