HomeMy WebLinkAboutCC PACKET 04122016
Our Mission is to be a progressive and livable community, a walkable village, which is sustainable, safe and secure.
Call to Order.
Pledge of Allegiance.
Roll Call.
Consideration, discussion, and possible action on all of the following items:
I. Approval of the April 12, 2016, City Council Meeting Agenda. (action requested.)
II. Proclamations and Recognitions.
III. Consent Agenda.
These items are considered routine and will be enacted by one motion. There will be no separate
discussion of these items unless a Councilmember or citizen so requests, in which the item will be
removed from the Consent Agenda and placed elsewhere on the agenda.
A. Approval of March 22, 2016, City Council meeting minutes. (pp.1-5)
B. Licenses and Permits. (pp.7)
C. Claims. (pp.9-11)
D. Resolution 16-034 a resolution Accepting Donations and Grants in the 1st Quarter of 2016.
(pp.13)
E. Resolution 16-035 a resolution Supporting Dedicated State Funding for City Streets. (pp.15)
IV. Public Hearing.
A. Resolution 16-036 a resolution relating to Property Tax Abatement; Granting the Abatement.
Stacie Kvilvang, Ehlers & Associates presenting (pp.17-25)
V. Reports from Commission and Staff.
VI. General Business of Council.
A. Presentations by City Engineer, Minnesota Pollution Control Agency, Minnesota Department of
Health, and US Army. (pp.27-47)
B. Resolution 16-037 a resolution Receiving Feasibility Report, Ordering Plans and Specifications,
and Authorizing the Advertisement of Bids for the Advanced Oxidation Water Treatment
Facility. Todd Hubmer, City Engineer presenting. (pp.49-115)
C. Resolution 16-038 St. Anthony Water Restrictions. Mark Casey, City Manager presenting.
(pp.117-119)
D. St. Anthony Finance Department Annual Report. Shelly Rueckert, Finance Director presenting.
(pp.121-128) VI. Reports from City Manager and Council members.
CITY OF ST. ANTHONY VILLAGE
CITY COUNCIL MEETING AGENDA
APRIL 12, 2016
7:00 p.m.
Our Mission is to be a progressive and livable community, a walkable village, which is sustainable, safe and secure.
VII. Community Forum.
Individuals may address the City Council about any item not included on the regular agenda.
Speakers are requested to come to the podium, sign their name and address on the form at the
podium, state their name and address for the Clerk’s record, and limit their remarks to five minutes.
Generally, the City Council will not take official action on items discussed at this time, but may
typically refer the matter to staff for a future report or direct the matter to be scheduled on an
upcoming agenda.
VIII. Information and Announcements.
IX. Adjournment.
CITY OF ST. ANTHONY 1
CITY COUNCIL REGULAR MEETING MINUTES 2
MARCH 22, 2016 3
4
CALL TO ORDER. 5
6
Mayor Faust called the meeting to order at 7:00 p.m. 7
8
PLEDGE OF ALLEGIANCE. 9
10
Mayor Faust invited the Council and audience to join him in the Pledge of Allegiance. 11
12
Present: Mayor Faust Councilmembers Brever, Gray, Jenson and Stille 13
Absent: None 14
Also Present: City Manager Mark Casey, Police Chief John Ohl, Stacie Kvilvang - Ehlers & 15
Associates, Public Works Director Jay Hartman 16
17
18
CONSIDERATION, DISCUSSION, AND POSSIBLE ACTION ON ALL OF THE FOLLOWING 19
ITEMS. 20
21
I. APPROVAL OF THE MARCH 22, 2016, CITY COUNCIL MEETING AGENDA. 22
23
Motion by Councilmember Gray, seconded by Councilmember Jenson, to approve the City 24
Council Meeting Agenda of March 22, 2016. 25
26
Mayor Faust noted on item VI.B the amount of the General Obligation Tax Abatement Bonds 27
should be corrected to $1,495,000. 28
29
Motion carried 5-0. 30
31
II. PROCLAMATIONS AND RECOGNITIONS - NONE 32
33
III. CONSENT AGENDA 34
35
A. Approval of March 8, 2016, City Council meeting minutes 36
B. Licenses and Permits 37
C. Claims 38
39
Motion by Councilmember Brever, seconded by Councilmember Gray, to approve the Consent 40
Agenda items as presented. 41
42
Motion carried 5-0 43
44
IV. PUBLIC HEARING - NONE 45
46
V. REPORTS FROM COMMISSION AND STAFF - NONE 47
48
VI. GENERAL BUSINESS OF COUNCIL 49
50
1
A. St. Anthony Police Department Annual Report 1
2
Police Chief John Ohl stated the motto of the Police Department is Safety through Service. Chief 3
Ohl reviewed statistical information on Part I and Part II crimes along with Calls for Service. He 4
summarized the Patrol Review showing 2213 citations issued for moving violations, 197 5
citations issued for non-moving violations and 833 arrests. A new CSO officer was hired from 6
the Reserve Officer Program. 7
8
Chief Ohl provided an Investigation Review with 340 Total Criminal Cases, 181 Total Cases 9
Cleared, 132 Total Cases Cleared by Arrest and 49 Total Cases Cleared by Other. This showed a 10
clearance rate of 53%. The Police Department completed 1541 hours of training (excluding 11
SWAT and WMD). Training included: Mental/Behavioral Health Training, Leadership Training, 12
Integrity and Diversity Training, Defensive Driving, Emergency Haz Mat, OSHA and Medical 13
Response and Active Shooter Training. 14
15
Seven new reserve officers were hired including 2420 donated hours with Schroeder having 450 16
hours and Panning 303 hours. 17
18
Chief Ohl reviewed Crime Prevention activities. Sgt. Manseth ran the program including MN 19
Night to Unite – 42 block parties, Polar Plunge, 5th Summer Survival School, Volunteered at the 20
Cinco De Mayo Celebration, Cops vs Kids Basketball, Shop with a Cop, and attended many 21
school and community events. 22
23
Chief Ohl stated they depend on the help from the residents. The Police Officers are dedicated to 24
their positions and the City. They do feel appreciated by the citizens and the Council. 25
26
Councilmember Gray asked about the philosophy on body cams. Chief Ohl stated it is a topic of 27
big discussion. They are waiting for legislation to catch up with technology. He has some 28
concerns about data practices and body cams. Another challenge is funding. The storage 29
accounts for the highest cost. 30
31
Councilmember Jenson complimented the Police Department on the publication done last year. 32
33
Councilmember Stille thanked Chief Ohl for his leadership and the reputation he has provided to 34
staff and the community. 35
36
Councilmember Brever stated she echoes the comments of the Councilmembers and also wants 37
to thank the Police Department from the schools. The children in the City are not fearful of the 38
Police officers and they are very approachable. 39
40
Mayor Faust thanked Chief Ohl and his staff. In the publication, it was important to read the 41
annual report and read what others in the department had written. The Department goes out of 42
their way to serve the public. Mayor Faust stated he is grateful for the Reserve Officers who 43
volunteer their time without pay. 44
45
B. Resolution 16-030 a Resolution Providing for the Sale of $1,510,000 General Obligation 46
Bonds, Series 2016A and $1,495,000 General Obligation Tax Abatement Bonds, Series 47
2016B. 48
2
1
Ms. Stacie Kvilang from Ehlers & Associates summarized the bonds before the Council for 2
consideration. They will be used to finance the 2016 road reconstruction projects and to finance 3
water quality and flood improvements to Mirror Pond, the City’s regional storm water pond and 4
complete nearly 1.5 miles of new sidewalk construction and ADA upgrades at eight intersections 5
to improve pedestrian safety in the City. Both bonds will have an 8 year call. Councilmember 6
Stille stated the first payment will be made in February 2017, which will be paid by a grant from 7
the federal government. 8
9
Motion by Councilmember Stille, seconded by Councilmember Jenson, to approve Resolution 10
16-030 a Resolution Providing for the Sale of $1,510,000 General Obligation Improvement 11
Bonds, Series 2016A and $1,495,000 General Obligation Tax Abatement Bonds, Series 2016B. 12
13
Motion carried 5-0 14
15
C. Resolution 16-031 a Resolution Relating to a Tax Abatement by the City on Certain 16
Property Located in Ramsey County, Calling for a Public Hearing. 17
18
Ms. Stacie Kvilang from Ehlers & Associates reviewed this is in regards to the Tax abatement 19
bonds. The Public Hearing will be held on April 12, 2016 at 7:00 p.m. at City Hall. 20
21
Motion by Councilmember Gray, seconded by Councilmember Brever, to approve Resolution 22
16-031 a Resolution Relating to a Tax Abatement by the City on Certain Properties Located 23
within the City and in Ramsey County; Calling for a Public Hearing. 24
25
Motion carried 5-0 26
27
D. Resolution 16-032 a Resolution Supporting the Submittal of a Hennepin County Bicycle 28
and Sidewalk Grant Application. 29
30
City Manager Casey reviewed the resolution supporting the application to the Hennepin County 31
Bicycle and Sidewalk Grant Program. The grant would be used to assist in the completion of 32
construction of sidewalk on the south side of 37th Avenue from Stinson Boulevard to Highcrest 33
Road and the construction of sidewalks associated with ADA improvements at four intersections 34
within Hennepin County. 35
36
Mayor Faust asked if this was a new program. City Manager Casey stated it was brought to 37
staff’s attention by Hennepin County. 38
39
Councilmember Jenson asked if this is in addition to the current safe walkway to school grant 40
and Mr. Casey stated it is in addition to the current grant. 41
42
Motion by Councilmember Brever, seconded by Councilmember Gray, to approve Resolution 43
16-032 a Resolution Supporting the Submittal of a Hennepin County Bicycle and Sidewalk 44
Grant Application. 45
46
Motion carried 5-0 47
48
3
E. Resolution 16-033 a Resolution Appointing Deputy Clerk Position. 1
2
City Manager Casey reviewed the Deputy Clerk position. The Deputy Clerk would be able to 3
perform the statutory duties of the City Clerk in case of absence or need. By appointing the 4
Deputy Clerk position staff will increase cross-training and enhance our organizational strength. 5
The Deputy Clerk would be trained by the City Clerk to carry out duties. An existing staff 6
person’s duties would be expanded to include these duties rather than hire another employee. 7
8
Councilmember Stille asked why this is being done and Mr. Casey stated statutorily in order to 9
create this position it needs to be approved by Council. It was an issue when the City Clerk was 10
absent and some things could not be done. 11
12
Motion by Councilmember Stille, seconded by Councilmember Gray, to approve Resolution 16-13
033 a Resolution Appointing Deputy Clerk Position. 14
15
Motion carried 5-0 16
17
F. St. Anthony Public Works Department Annual Report 18
19
Public Works Director Hartman reviewed the 2015 Public Works Annual Report. He reviewed 20
the Mission Statement and the organization structure. There are six divisions – Street Division, 21
Parks Division, Water/Sewer Division, Vehicle Maintenance Division, Engineering Division and 22
City Building. There are 14 employees in the Department. Mr. Hartman summarized the 23
accomplishments of each division in 2015. 24
25
The 2015 Public Works Department Projects included Citywide Building Maintenance, Annual 26
Branch Chipping Program, Annual Chip Sealing Program, 2015 Capital Equipment Purchases 27
and Adopt a Bench Program. 2015 Safety Training for Public Works was 1st Aid & CPR, 28
Personal Protective Equipment, Hazard Communication, Hearing Conservation, Chain Saw 29
Safety, Trenching and Excavation Safety and Working Around Mobile Equipment. This training 30
is mandatory for all employees. 31
32
Mr. Hartman reviewed the Engineering Division Projects and Street Improvement Projects 2016 33
– 2024. He reviewed the Citywide Sustainability Initiative and noted accomplishments of Kristin 34
Seaman the Minnesota GreenCorps Member. The 2016 and Beyond projects for the Public 35
Works Department as well as 2016 Upcoming Events. 36
37
Councilmember Gray referred to an article in the Star Tribune newspaper about meter 38
replacement. This was done in St. Anthony in 2006. Councilmember Gray asked what the 39
difference between a water main break and a service break was. Mr. Hartman stated the water 40
main break is the 6 inch pipe that runs in the street and a service break is the connection between 41
the water main and the house. The resident is responsible from the water meter to the curb stop. 42
The service breaks that occurred in 2015 were in the older portion of the City. Councilmember 43
Gray said he has heard many references to St. Anthony being such a clean city. 44
45
Councilmember Brever thanked Mr. Hartman and his team for their cleanup after the parade for 46
Village Fest. Everything was cleaned up within an hour along the parade route. 47
48
4
Councilmember Stille stated although water main breaks were down this year this 1
will continue to decrease with the street projects. 2
3
Councilmember Jenson noted he has heard comments about the Department’s responsiveness to 4
calls and how professional the staff is. 5
6
Mayor Faust thanked the Department for its due diligence. The Department has embraced 7
sustainability. It is astounding the streets are swept 9 times. The LMC Insurance is lower because 8
the low number of worker’s compensation claims. Training is instrumental in eliminating these 9
types of claims. This Department does a great job for the City. 10
11
VII. REPORTS FROM CITY MANAGER AND COUNCIL MEMBERS. 12
13
Mr. Casey stated City Hall will be closed for Good Friday. 14
15
Councilmember Brever had no report. 16
17
Councilmember Jenson stated last Wednesday he attended the meeting with the History 18
Committee. An open house was held on March 5, 2016 for the newly published book, of which 19
100 copies were sold. Future events will be held to sell the book. 20
21
Councilmember Stille stated on March 19, 2016 he stopped into the liquor store where there was 22
an event for the Comp Plan. There will be other opportunities to continue dialog with Council 23
representatives. 24
25
Mayor Faust stated on March 14, Mr. Casey and he attended the Regional Council of Mayors 26
Meeting, which was dedicated to water, as it is an ongoing concern. 40% of the water use in the 27
summer is for outdoor use. Residents should consider ways to manage water use. He stated many 28
other agency representatives attended this meeting. The next meeting will also continue the water 29
discussion. On March 16, he met the new State Senator and saw the new Capitol building. 30
31
VIII. COMMUNITY FORUM - NONE 32
33
IX. INFORMATION AND ANNOUNCEMENTS - NONE 34
35
X. ADJOURNMENT. 36
37
Mayor Faust adjourned the meeting at 8:15 p.m. 38
39
Respectfully submitted, 40
Debbie Wolfe 41
TimeSaver Off Site Secretarial, Inc. 42
43
_ _ 44
ATTEST: ________________________________ Mayor 45
City Clerk 46
47
5
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6
Saint Anthony Village
DATE: April 12, 2016 Approved:
TO: Mayor and Councilmembers
FROM: License Clerk
ITEM: License and Permits for Approval:
General Contractors Licenses:
Northeast Tree, Minneapolis, MN
One Way Building Services, Edina, MN
Pioneer Tree & Landscape, Pierz, MN
Reliable Tree Service, Cambridge, MN
Vinco, Forest Lake, MN
Mechanical Licenses:
Absolute Mechanical, Edina, MN
Joe & Sons Sheet Metal, Jordan, MN
Market Mechanical, Brooklyn Park, MN
The Fireplace Guys, Oakdale, MN
Garbage Hauler/Recycling Licenses:
Applicant: Walters Recycling & Refuse
Service Station Licenses:
Applicant: Murphy’s Service Center
Location: 3501 29th Ave NE
Applicant: St Anthony Mobil
Location: 2801 Kenzie Ter NE
Parks Special Event Beer Permit:
Date: June 12, 2016
Applicant: Louise Louiselle
Location: Central Park
3.2 On Sale Liquor License:
Applicant: Gross Golf Course
Locations: 2201 St. Anthony Blvd.
7
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8
City of St Anthony Village CITY OF ST ANTHONY CHECK REGISTER Page: 1
Check Issue Dates: 3/25/2016 - 4/13/2016 Apr 07, 2016 08:51AM
Vendor Number Payee Check Number Check Issue Date Amount
10176 BLUE CROSS BLUE SHIELD 28952 03/25/2016 61,428.50
11798 CENTRAL PENSION FUND LOCAL #49 28953 03/25/2016 2,764.80
11809 CITY OF ST. ANTHONY SUNSHINE FUND 28954 03/25/2016 399.00
10710 ICMA RETIREMENT TRUST 28955 03/25/2016 2,456.00
11808 SAPD ASSOCIATION 28956 03/25/2016 486.00
12077 SUN LIFE FINANCIAL 28957 03/25/2016 855.80
10186 BOYER TRUCKS LAUDERDALE 28958 03/31/2016 33,605.25
10186 BOYER TRUCKS LAUDERDALE 28959 03/31/2016 110.00
10710 ICMA RETIREMENT TRUST 28960 04/08/2016 2,456.00
11792 INTERNATIONAL UNION LOCAL #49 28961 04/08/2016 402.00
11793 LAW ENFORCEMENT LABOR SERVICES 28962 04/08/2016 1,078.00
10002 LOCAL UNION IAFF #3486 28963 04/08/2016 336.72
2003 SIDESHOW BLOODY MARY MIX 28964 04/13/2016 288.00
1118 56 BREWING 28965 04/13/2016 144.00
10039 AIRGAS USA LLC 28966 04/13/2016 52.20
10056 ALLIED MEDICAL PRODUCTS 28967 04/13/2016 118.00
1054 AMERICAN BOTTLING CO 28968 04/13/2016 240.80
10098 ARAMARK 28969 04/13/2016 426.35
1100 ARTISIAN BEER COMPANY 28970 04/13/2016 5,960.95
10115 ASPEN MILLS 28971 04/13/2016 494.84
12299 BARBER, CHERIE 28972 04/13/2016 275.29
10149 BATTERIES PLUS 28973 04/13/2016 14.99
1101 BAUHAUS BREW LABS LLC 28974 04/13/2016 760.00
10159 BEISSWENGER'S 28975 04/13/2016 19.27
1013 BELLBOY CORPORATION 28976 04/13/2016 8,777.08
1014 BELLBOY CORPORATION 28977 04/13/2016 279.06
1007 BENT BREWSTILLERY 28978 04/13/2016 208.34
1035 BERNICK'S BEVERAGE & VENDING 28979 04/13/2016 2,861.05
10172 BIFFS, INC.28980 04/13/2016 202.50
8544 BOURGET IMPORTS 28981 04/13/2016 106.96
10188 BRAKE & EQUIPMENT WAREHOUSE 28982 04/13/2016 56.69
10191 BRAZIL, KIM 28983 04/13/2016 43.00
1018 BREAKTHRU BEVERAGE MN BEER 28984 04/13/2016 27,166.51
1011 BREAKTHRU BEVERAGE MN WINE & SPIRITS 28985 04/13/2016 5,847.38
1009 BREAKTHRU BEVERAGE MN WINE & SPIRITS 28986 04/13/2016 763.44
10215 BUREAU CRIMINAL APPREHENSION 28987 04/13/2016 130.00
10216 BUREAU CRIMINAL APPREHENSION 28988 04/13/2016 940.00
10218 BUREAU OF CRIM APPREHENSION 28989 04/13/2016 690.00
1017 CAPITOL BEVERAGE SALES 28990 04/13/2016 22,403.80
12150 CITY OF NEW BRIGHTON 28991 04/13/2016 5,664.16
12303 CITY WIDE LOCK & SAFE, LLC 28992 04/13/2016 187.50
1010 CLEAR RIVER BEVERAGE COMPANYMPANY 28993 04/13/2016 1,281.10
1021 COCA COLA REFRESHMENTS USA, INC.28994 04/13/2016 761.08
10332 COMPTON'S COMMERCIAL CLNG. INC 28995 04/13/2016 3,578.00
10351 CREATIVE PRODUCT 28996 04/13/2016 1,693.38
1042 CRYSTAL SPRINGS ICE 28997 04/13/2016 168.31
10438 D ROCK CENTER & SMALL ENG 28998 04/13/2016 9.50
10373 DAILEY DATA & ASSOCIATES 28999 04/13/2016 62.50
10375 DALCO 29000 04/13/2016 184.12
12209 DASH MEDICAL GLOVES 29001 04/13/2016 212.70
12300 DEANS PROFESSIONAL PLUMBING 29002 04/13/2016 40.00
10402 DEPARTMENT OF LABOR & INDUSTRY 29003 04/13/2016 594.39
10432 DORSEY & WHITNEY 29004 04/13/2016 4,610.25
9
City of St Anthony Village CITY OF ST ANTHONY CHECK REGISTER Page: 2
Check Issue Dates: 3/25/2016 - 4/13/2016 Apr 07, 2016 08:51AM
Vendor Number Payee Check Number Check Issue Date Amount
1119 EAST LAKE BREWERY 29005 04/13/2016 324.00
10468 ELECTRO WATCHMAN INC 29006 04/13/2016 368.72
10473 EMERGENCY APPARATUS 29007 04/13/2016 3,058.59
10474 EMERGENCY AUTOMOTIVE TECH, INC 29008 04/13/2016 62.01
12019 ENFORCEMENT LIGHTING LLC 29009 04/13/2016 18,800.00
1060 FAIR STATE BREWING COOPERATIVE 29010 04/13/2016 356.00
10508 FERGUSON WATERWORKS 29011 04/13/2016 140.00
11783 FIRE EQUIPMENT SPECIALTIES INC 29012 04/13/2016 229.95
10517 FIRE SAFETY USA, INC.29013 04/13/2016 1,370.00
10526 FLEETPRIDE 29014 04/13/2016 10.40
10544 FREEWAY TOWING 29015 04/13/2016 184.26
10550 G & K SERVICES INC 29016 04/13/2016 1,190.47
10573 GOODIN COMPANY 29017 04/13/2016 120.89
1032 GRAPE BEGINNINGS, INC.29018 04/13/2016 1,429.25
10624 HAWKINS, INC 29019 04/13/2016 1,379.45
10636 HEDBACK, ARENDT & CARLSON PLLC 29020 04/13/2016 3,500.00
10651 HENNEPIN COUNTY MEDICAL CENTER 29021 04/13/2016 910.00
10661 HENNEPIN COUNTY TREASURER 29022 04/13/2016 644.63
1019 HOHENSTEIN'S, INC 29023 04/13/2016 8,484.00
10684 HOME DEPOT CREDIT SERVICES 29024 04/13/2016 406.88
12304 HORNICK, MARK 29025 04/13/2016 150.00
1027 INDEED BREWING COMPANY 29026 04/13/2016 423.20
10730 INSIGNIA SYSTEMS, INC.29027 04/13/2016 660.88
11754 INTEGRATED LOSS CONTROL, INC.29028 04/13/2016 592.00
12105 INTERSTATE ALL BATTERY CENTER 29029 04/13/2016 439.80
10774 JERSEY MIKE'S SUBS 29030 04/13/2016 235.26
1016 JJ TAYLOR DISTRIBUTING 29031 04/13/2016 41,139.44
1004 JOHNSON BROTHERS LIQUOR CO.29032 04/13/2016 6,273.96
1005 JOHNSON BROTHERS LIQUOR COMPANY.29033 04/13/2016 7,055.89
1006 JOHNSON BROTHERS LIQUOR COMPANY.29034 04/13/2016 7,274.85
1044 JOHNSON BROTHERS LIQUOR COMPANY.29035 04/13/2016 13,639.82
12301 KLM ENGINEERING 29036 04/13/2016 3,200.00
10798 KONRAD MATERIAL SALES LLC 29037 04/13/2016 2,120.64
10806 L.T.G. POWER EQUIPMENT 29038 04/13/2016 67.47
10861 LOFFLER COMPANIES - 131511 29039 04/13/2016 270.88
1022 M. AMUNDSON LLP 29040 04/13/2016 1,494.49
10874 MACQUEEN EQUIPMENT CO 29041 04/13/2016 124.56
10931 METROPOLITAN COUNCIL - WASTEWATER 29042 04/13/2016 48,019.79
12152 MILLER, NICOLE 29043 04/13/2016 228.16
10963 MINNEAPOLIS SAW COMPANY INC 29044 04/13/2016 13.95
11036 MINNESOTA DEPT OF TRANSPORTATION 29045 04/13/2016 755.70
10992 MINNESOTA MUNICIPAL 29046 04/13/2016 820.00
11965 MINNESOTA POLLUTION CONTROL AGENCY 29047 04/13/2016 23.00
11019 MISTER CAR WASH 29048 04/13/2016 75.87
11074 MTI DISTRIBUTING, INC 29049 04/13/2016 70.86
11085 MURPHY'S SERVICE CENTER 29050 04/13/2016 10.18
11089 NAPA AUTO PARTS 29051 04/13/2016 100.07
11104 NELSON AUTO CENTER - FLEET DEPT 29052 04/13/2016 57,718.66
1051 NEW FRANCE WINE COMPANY 29053 04/13/2016 1,315.50
12088 OFFICE 8 29054 04/13/2016 86.97
11163 OFFICE DEPOT 29055 04/13/2016 665.56
11164 OFFICE OF THE SECRETARY STATE 29056 04/13/2016 120.00
12112 OREILLY AUTO PARTS 29057 04/13/2016 135.91
10
City of St Anthony Village CITY OF ST ANTHONY CHECK REGISTER Page: 3
Check Issue Dates: 3/25/2016 - 4/13/2016 Apr 07, 2016 08:51AM
Vendor Number Payee Check Number Check Issue Date Amount
11185 PACE ANALYTICAL SERVICES, INC.29058 04/13/2016 710.00
11186 PAETEC 29059 04/13/2016 251.42
1012 PAUSTIS & SONS 29060 04/13/2016 3,044.85
1001 PHILLIPS WINE & SPIRITS 29061 04/13/2016 1,175.14
1002 PHILLIPS WINE & SPIRITS 29062 04/13/2016 5,806.52
11223 PLASTIC BAGMART 29063 04/13/2016 719.00
11246 PRAXAIR 29064 04/13/2016 38.08
12008 PREMIER LIGHTING 29065 04/13/2016 5,282.90
11299 RAMSEY COUNTY 29066 04/13/2016 87.00
11303 RAMSEY COUNTY ATTORNEY'S OFC 29067 04/13/2016 80.36
11309 RAMY TURF PRODUCTS 29068 04/13/2016 128.00
11411 SIMON, SANDY 29069 04/13/2016 36.07
11412 SIMPLEXGRINNELL 29070 04/13/2016 1,458.65
1055 SOCIABLE CIDER WERKS 29071 04/13/2016 450.00
1036 SOUTHERN - WCW 29072 04/13/2016 61.28
1026 SOUTHERN LIQUOR 29073 04/13/2016 5,196.14
1024 SOUTHERN WINE & SPIRITS - LAKES DIVISION 29074 04/13/2016 1,737.84
1008 SOUTHERN WINE-SPIRITS-AMERICAN DIVISION 29075 04/13/2016 486.40
12305 SPRING LAKE PARK FIRE DEPT %29076 04/13/2016 100.00
11457 ST ANTHONY VILLAGE CENTER, LLC 29077 04/13/2016 2,220.04
11502 STREICHER'S 29078 04/13/2016 2,623.50
11536 TASC 29079 04/13/2016 15.00
11566 TIMESAVER OFF SITE SECRETARIAL 29080 04/13/2016 339.00
1031 TIN WHISKERS BREWING COMPANY 29081 04/13/2016 166.60
12306 TOTAL REFRIDGERATION SYSTEMS INC 29082 04/13/2016 2,529.05
11586 TRACY PRINTING 29083 04/13/2016 2,480.00
1098 TRADITION WINE & SPIRITS 29084 04/13/2016 319.66
11819 TRUE NORTH ELECTRIC 29085 04/13/2016 1,249.00
11612 TWIN CITY JANITOR SUPPLY 29086 04/13/2016 138.48
11633 UNIFORMS UNLIMITED 29087 04/13/2016 234.93
11637 UNITED ELECTRIC COMPANY 29088 04/13/2016 63.70
11644 UNITED STATES POSTAL SERVICE 29089 04/13/2016 700.00
11666 VANDENBOOM/PAUL 29090 04/13/2016 61.99
11674 VERIZON WIRELESS 29091 04/13/2016 1,518.85
1025 VINOCOPIA 29092 04/13/2016 2,646.75
11704 WASTE MANAGEMENT OF WI-MN 29093 04/13/2016 440.63
1034 WINE COMPANY/THE 29094 04/13/2016 2,727.60
1038 WINE MERCHANTS INC 29095 04/13/2016 1,300.54
11731 WITMER PUBLIC SAFETY GRP, INC.29096 04/13/2016 69.85
11738 WSB & ASSOCIATES, INC.29097 04/13/2016 66,494.63
Grand Totals: 558,177.83
Automatic Payments:
Xcel Energy $23,475.24
Grand Total $581,653.07
11
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12
CITY OF ST. ANTHONY VILLAGE
STATE OF MINNESOTA
RESOLUTION 16-034
A RESOLUTION ACCEPTING GRANTS AND DONATIONS RECEIVED
WHEREAS, the City of St. Anthony is required to accept all grants and donations by resolution; and
WHEREAS, the City of St. Anthony has received the following grants and donations in the 1st quarter
of 2016:
Rice Creek Watershed District-Mirror Lake Flooding Project 642,000.00
St. Anthony Sports Boosters 400.00
Kiwanis Club of St Anthony (Police Department) 500.00
St. Anthony Resident (Police Department) 200.00
MWMO-Rainbarrel Grant 1,500.00
Chris Farhet (Police Department) 20.00
Total $644,620.00
NOW, THEREFORE BE IT RESOLVED that the City Council of the City of St. Anthony Village
hereby accepts the grants and donations as received in the 1st quarter of 2016.
Adopted this 12th day of April, 2016.
_________________________________________
Jerome O. Faust, Mayor
ATTEST:___________________________
Nicole Miller, City Clerk
Review for Administration: _______________________________________
Mark Casey, City Manager
13
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14
CITY OF ST. ANTHONY VILLAGE
STATE OF MINNESOTA
RESOLUTION 16-035
A RESOLUTION SUPPORTING DEDICATED STATE FUNDING FOR CITY
STREETS
WHEREAS, Minnesota contains over 141,000 miles of roadway, and over 19,000 miles—or 13
percent--are owned and maintained by Minnesota’s 853 cities; and
WHEREAS, over 80 percent of municipal streets are ineligible for dedicated Highway User Tax
Distribution Fund dollars; and
WHEREAS, the more than 700 Minnesota cities with populations below 5,000 are ineligible for
dedicated Highway User Tax Distribution Fund dollars; and
WHEREAS, city streets are a separate but integral piece of the network of roads supporting
movement of people and goods; and
WHEREAS, existing funding mechanisms, such as Municipal State Aid (MSA), property taxes
and special assessments, have limited applications, leaving cities under-equipped to address
growing needs; and
WHEREAS, city cost participation in state and county highway projects diverts resources from city-
owned streets; and
WHEREAS, maintenance costs increase as road systems age, and no city--large or small—is
spending enough on roadway capital improvements to maintain a 50-year lifecycle; and
WHEREAS, for every one dollar spent on maintenance, a road authority--and therefore
taxpayers--save seven dollars in repairs; and
WHEREAS, cities need greater resources, including an additional dedicated state funding
source for transportation, and flexible policies in order to meet growing demands for street
improvements and maintenance.
NOW, THEREFORE, BE IT RESOLVED BY THE CITY OF ST. ANTHONY that the City
of St. Anthony supports an omnibus transportation funding bill that provides additional dedicated
state funding for city streets including funding that can be used for non-MSA city street
maintenance, construction and reconstruction.
ADOPTED this 12th day of April, 2016.
_____________________________
Jerome O. Faust, Mayor
ATTEST:____________________________
Nicole Miller, City Clerk
Reviewed for administration: ______________________________
Mark Casey, City Manager
15
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16
Memo
To: Mark Casey – City Manager
From: Stacie Kvilvang
Date: April 12, 2016
Subject: Tax Abatement Bonds Series 2016A
The City is moving forward with the process to make necessary water quality and flood
improvements to Mirror Pond, the City’s regional storm water pond and complete nearly
1.5 miles of new sidewalk construction and ADA upgrades at eight intersections to
improve pedestrian safety within the City. These improvements are expected to cost
approximately $2,975,000. The City will be receiving a grant from the Rice Creek
Watershed in the amount of $1,142,000 and the City will be contributing $400,000 from
other City funds for the project as well. The remaining costs need to be financed with a
general obligation tax abatement bond. To meet the City’s financing parameters, it is
anticipated that the City will issue these bonds in an amount not to exceed $1.6 million,
with a 10-year term (anticipated bond amount is $1,495,000).
As previously discussed, the City has the authority under Minnesota Statute 469 to
issue abatement bonds for these projects. In order to grant tax abatement, the City is
required to hold a public hearing on the amount of the abatement to be granted, identify
the properties from which they will abate the City’s portion of the taxes and describe the
public purpose for granting the abatement.
The City will be abating its portion of the taxes from the following properties
surrounding Mirror Lake (see attached map):
The public purpose in granting the abatement is that the City expects the benefits to the
City of the abatement to at least equal to or exceed the costs to the City and that
granting the abatement is in the public interest (see attached resolution for public
interest findings).
Please contact me at 651-697-8506 if you have any questions.
17
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18
CERTIFICATION OF MINUTES RELATING TO A TAX ABATEMENT; GRANTING THE
ABATEMENT
Issuer: City of St. Anthony, Minnesota
Governing Body: City Council
Kind, date, time and place of meeting: A regular meeting held on April 12, 2016, at 7:00 o’clock
P. M. at the City Offices.
Members present:
Members absent:
Documents Attached:
Minutes of said meeting (pages):
RESOLUTION NO. 16-036
RESOLUTION RELATING TO A TAX ABATEMENT;
GRANTING THE ABATEMENT
I, the undersigned, being the duly qualified and acting recording officer of the public
corporation referred to hereinabove, certify that the documents attached hereto, as described
above, have been carefully compared with the original records of said corporation in my legal
custody, from which they have been transcribed; that said documents are a correct and complete
transcript of the minutes of a meeting of the governing body of said corporation, and correct and
complete copies of all resolutions and other actions taken and of all documents approved by the
governing body at said meeting, so far as they relate to the topic of this resolution; and that said
meeting was duly held by the governing body at the time and place and was attended throughout
by the members indicated above, pursuant to call and notice of such meeting given as required
by law.
WITNESS my hand officially as such recording officer on April __, 2016.
_________________________________
City Manager
19
Councilmember ____________ introduced the following resolution and moved its adoption,
which motion was seconded by Councilmember ___________:
RESOLUTION RELATING TO A TAX ABATEMENT;
GRANTING THE ABATEMENT
BE IT RESOLVED by the City Council of the City of St. Anthony, Minnesota (the
“City”), as follows:
Section 1. Authorization and Recitals.
1.01. The City, pursuant to Minnesota Statutes, Sections 469.1812 to 469.1815, as
amended (the “Act”), is authorized to grant an abatement of the property taxes imposed by the
City on a parcel of property, if certain conditions are met, through the adoption of a resolution
specifying the terms of the abatement.
1.02. The City proposes to undertake public improvements consisting of water quality
and flood improvements to Mirror Pond, the City’s regional storm water pond, and nearly 1.5
miles of new sidewalk construction and ADA upgrades at eight intersections to improve
pedestrian safety within the City (the “Project”).
1.03. Pursuant to the Act, on the date hereof, this Council conducted a public hearing on
the desirability of granting an abatement of property taxes on certain properties expected to be
benefited by the proposed Project, which properties are identified on Exhibit A hereto and are
shown on Exhibit B hereto (the “Properties”). Notice of the public hearing was duly published
as required by law in the St. Anthony Bulletin, the official newspaper of the City, on March 30,
2016, which date is no fewer than ten and no more than 30 days prior to the date hereof.
Section 2. Findings. On the basis of the information compiled by the City and elicited at
the public hearing referred to in Section 1.03, it is hereby found, determined and declared:
2.01. The Project is in the public interest because it will provide or help acquire and
construct public facilities.
2.02. The City expects that the benefits of the proposed abatement are not less than the
costs of the proposed abatement. The public benefits that the City expects to result from the
abatement are the provision of improved water quality and pedestrian safety for the benefit of
residents of the City.
2.03. The Properties are not located in a tax increment financing district.
2.04. The granting of the proposed abatement will not cause the aggregate amount of
abatements granted by the City under the Act in any year to exceed the greater of (i) ten percent
(10.00%) of the City’s net tax capacity for the taxes payable year to which the abatement applies,
or (ii) $200,000.
2.05. It is in the best interests of the City to grant the tax abatement authorized in this
Resolution.
20
2.06. Under Section 469.1813, Subdivision 9 of the Act, it is not necessary for the City
to obtain the consent of any owner of any of the Properties to grant an abatement.
Section 3. Granting of Tax Abatement.
3.01. A property tax abatement (the “Abatement”) is hereby granted in respect of
property taxes levied by the City on the Properties for ten (10) years, commencing with taxes
payable in 2017 and concluding with taxes payable in 2026. The Abatement will reduce all of
the taxes for each of the Properties, and the total amount of the Abatement will not exceed
$1,600,000.
3.02. The City shall retain the Abatement and apply it to payment of all or a portion of
the costs of acquiring or constructing the Project or to the payment of bonds of the City issued to
finance costs of acquiring or constructing the Project.
3.03. The Abatement may be modified or terminated at any time by the City Council in
accordance with the Act.
Adopted this 12th day of April, 2016.
______________________________
Jerome O. Faust, Mayor
ATTEST: ___________________________
Nicole Miller, City Clerk
Reviewed for administration: ______________________________
Mark Casey, City Manager
21
EXHIBIT A
Properties with the following parcel identification numbers:
22
M i r r o rL a k e
CON
T
I
N
E
N
T
A
L
D
R
BENZ RD
CSAH 19
CORD CIR
15
T
H
A
V
E
S
W
7TH ST SW
FOSS RD
RIVI
E
R
A
D
R
ROLLS RD
39TH AV E NE
HI
G
H
C
R
E
S
T
R
D
D IA M O N D E I G H T TER
DIAMONDEIGHTTER
SILVER LN
1 6 T H A V E S W
F OR DH AM C T N E
39TH AVE NE
37TH AV E NE
FO
R
D
H
A
M
D
R
3 7TH AVE N E
SH
A
M
R
O
C
K
D
R
SILVER LN
CHAN
D
L
E
R
D
R
CH
A
N
D
L
E
R
D
R
FOS
S
R
D
FO
S
S
R
D
SILV
E
R
L
N
313023440040
313023440027
313023440042
313023440041
2
12
11
65
9
14
3
10
138
1
4
7
313023410008
313023440039
313023440038
313023440037
313023440058
313023440029
Tax Abatement Parcels Map
Mirror LakeSaint Anthony Village, Minnesota 0 300 600 Feet 8
Legend
Abatement Parcels
K
:
\
0
1
6
2
6
-
9
2
0
\
G
I
S
\
M
A
P
S
\
M
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R
O
R
_
L
A
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.
M
X
D
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A
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A
V
E
D
:
3
/
2
4
/
2
0
1
6
2
:
1
3
:
0
0
P
M
1- 313023440094
2- 313023440093
3- 313023440092
4- 313023440091
5- 313023440090
6- 313023440089
7- 313023440081
8- 313023440082
9- 313023440083
10- 313023440084
11- 313023440088
12- 313023440087
13- 313023440086
14- 313023440085
23
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24
NOTICE OF A PUBLIC HEARING
REGARDING PROPOSED PROPERTY TAX ABATEMENTS
NOTICE IS HEREBY GIVEN that the City Council of the City of St. Anthony, Minnesota, will hold a
public hearing of the City Council beginning at 7:00 p.m., on April 12, 2016, to be held at St. Anthony City
Hall, 3301 Silver Lake Road, St. Anthony, Minnesota, on the proposal that the City abate property taxes
levied by the City on the property identified as tax parcel numbers:
The total amount of the taxes proposed to be abated by the City on the property for up to a 10 year
period is estimated to be not more than $2,200,000. The City Council will consider the property tax
abatement to finance the water quality and flood improvements to Mirror Pond, the City’s regional storm
water pond and complete nearly 1.5 miles of new sidewalk construction and ADA upgrades at eight
intersection to improve pedestrian safety in the City (the "Project"),
The City proposes to issue General Obligation Tax Abatement Bonds in an amount not to exceed
$2,200,000 to finance the Projects.
All interested persons may appear at the April 12, 2016 public hearing and present their views orally or
in writing.
BY ORDER OF THE CITY COUNCIL OF
THE CITY OF ST. ANTHONY, MINNESOTA
/s/ Mark Casey
City Manager
Published March 30, 2016
313023410008 313023440085 313023440092 313023440037 313023440022
313023440042 313023440086 313023440093 313023440058 313023440023
313023440041 313023440087 313023440094 313023410005 313023440024
313023440081 313023440088 313023440040 313023410006 313023440025
313023440082 313023440089 313023440039 313023410004 313023440062
313023440083 313023440090 313023440027 313023440026 313023440029
313023440084 313023440091 313023440038 313023440020
25
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26
Village of St. Anthony, City Council Meeting
Gary Krueger, Supervisor
Remediation Division
April 12, 2016
TWIN CITIES ARMY
AMMUNITION PLANT (TCAAP)
Manufacturing
operations
were on
western 1/3
of site
Historical
disposal
areas were
located in
undeveloped
eastern area.
Ramsey
County
purchased
western 1/3
in 2013 and
has since
removed all
buildings.
Aerial
Photo of
TCAAP
Facility
(2010)
27
Source areas
for off-site
plume
Site D (dump)
Site G (dump)
Building 502
On-site
Groundwater
Cleanup
Remediation wells
along SW boundary
and near source areas
pump TCE-impacted
groundwater to on-site
treatment system.
Over 213,000 lbs of
VOCs removed from
GW since system
started in 1987.
Treated water is
discharged into on-site
gravel pit, where it
recharges aquifer.
Treatment system
•Since system start -up
in 1987, TCE plume has
shrunk in size and
concentration.
•Map shows plume
boundary in 1990
(blue dash) compared
to 2009 (yellow).
•Plume boundary
defined by TCE
concentration of 1 part
per billion (ppb)
Shrinking Plume
28
2015/2016 Data, Bedrock Aquifer
Colored shading = TCE
•Current concentrations up to
960 ppb in purple zone
(historical high 2100 ppb)
•Current concentrations in
yellow zone <10 ppb
1,4 -Dioxane (DX)
•Max DX on TCAAP: 280 ppb
•Max DX off -site: 60 ppb
(near TCAAP boundary)
•Inner purple contour=DX 10 ppb
•Outer purple contour=DX 1 ppb
•Most off -site concentrations
are between 1 and 10 ppb
•SAM wells straddle 1 ppb
contour (HRL = 1 ppb)
Off -Site Plume
Army is currently conducting an investigation to
determine extent of DX plume.
Remedial decision for on -site DX will be made
after investigation is complete.
(existing TCE treatment plant does not remove DX)
Focus to date has been on DX treatment
systems for drinking water supplies.
1,4 -Dioxane – What’s Next?
29
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30
St. Anthony Village:
Drinking Water and 1,4-Dioxane
James Kelly, M.S.
Manager, Environmental Surveillance & Assessment
Protecting people in Minnesota…
•Special testing every 3-5 years by EPA and MDH
•Compliance with guidance value is voluntary
•Guidance values are based on health only
•Testing is done in community water supplies serving 10,000+ people
•Public is notified of test results through the CCR
Unregulated contaminants in drinking water –
part of a Special Monitoring Program
31
Emerging Contaminants…
•No clear definition…some “new” awareness
•new chemical
•new toxicological info
•new level of detection
•new media
•new pathway
•Health “standard" lacking or changing
•Not yet regulated in drinking water
1, 4-Dioxane is…
•Used to stabilize chlorinated solvents.
•Found in small amounts in personal care products, laundry detergents
and food.
In the environment…
•1,4-Dioxane released by spills or disposal of solvents that contain it as
a stabilizer.
•Likely to stay in water once there - does not break down.
*This is why it can reach groundwater, surface water,
and potentially drinking water.
32
1,4-Dioxane in Minnesota...
•1,4-Dioxane has been detected in several public water supplies in Minnesota.
•MDH does not regulate 1,4-Dioxane in public water supplies.
•MDH does have a health-based guidance value for 1, 4-Dioxane.
1,4-Dioxane in St. Anthony Village…
•Small amount was found in your city’s public drinking water system.
•Do not exceed the guidance value recommended by MDH.
MDH Guidance: 1, 4-Dioxane in drinking water
1 ppb (1 ppb = 1 microgram per liter, or μg /L)
•1,4-Dioxane was found to cause liver cancer in animal experiments - no
human cases of cancer have been linked to it.
•Based on drinking water daily, over long-term or lifetime of exposure –
not an immediate health risk.
•Includes factors to account for other exposures (diet, consumer products).
MDH first reviewed 1, 4-Dioxane in 2011;
adopted the guidance as a rule in September 2013.
33
The risk of developing cancer from exposure
to 1,4-Dioxane, at the amounts found
in the city drinking water, is very low.
•It won’t have any impact on your health if you drink the water for
a few days, a few months, or even a few years.
•Other activities, like housecleaning, washing dishes, bathing,
showering, or watering your lawn will not place you at increased
risk for health problems.
Conclusions
•St. Anthony Village is proactively addressing the 1, 4-Dioxane issue in
the public water supply.
•Carbon filters and other point-of-use, household technology will
generally not remove 1,4-Dioxane from drinking water.
•Treatment at the source (city wells) will be the most effective remedy.
34
Treatment Plant Expansion
Feasibility Study
April 12, 2016
What is 1,4-Dioxane (Dioxane)?
►Used to stabilize chlorinated solvents
►Found in small amounts in many personal care
products, laundry detergents, and food
►Considered an emerging contaminant
►Likely to stay in water once there – it does not
break down naturally
35
Project Coordination
►US Army
►MPCA
►MDH
City Well Location Map
Well No. 4 Well No. 3
Well No. 5
36
Dioxane Sampling Results
Dioxane Sampling Results
37
►Option 1 – Blend City wells
►Option 2 – Construct deeper Mount-Simon
Hinckley wells
►Option 3 – Purchase water from Minneapolis
►Option 4 – Purchase water from St. Paul Regional
Water Services
►Option 5 – Implement treatment for Dioxane
Options to Address Dioxane
►Primary Focus – Options 3 and 5
►During initial screening, Options 1 and 4 were
eliminated from further consideration:
Did not provide a long term solution – blending
Similar to Option 3 with a considerable increase in cost
and implementation timeline.
Options to Address Dioxane
38
Option 2 – Construct Deeper
Mount-Simon Hinckley Wells
Source: MetCouncil Groundwater Digest
Option 2 – Construct Deeper
Mount-Simon Hinckley Wells
Advantages
►Currently no TCE or Dioxane
►Better confined
►City control over water production and costs to
customers
39
Option 2 – Construct Deeper
Mount-Simon Hinckley Wells
Disadvantages
►Radium
►Larger well pumps
►Groundwater interference with New Brighton
►DNR moratorium – permit challenges
►Increased timeline for implementation
Option 2 – Construct Deeper
Mount-Simon Hinckley Wells
Estimated
Capital Cost
Finance Cost
(4%
Interest)
Estimated
Annual
O&M Cost
(3.5%
Inflation
Rate)
20-Year Cost
of
Purchasing/
Producing
Water
Total
20-Year
Cost
$7,115,600 $3,356,000 $2,812,300 $4,954,000 $18,237,900
* Costs above include 4% bond financing and 3.5% inflation for yearly operation and maintenance costs.
40
Option 3 – Purchase Water from
Minneapolis
Advantages
►Less responsibility
►Water already softened
►Redundancy in water
supply
►Less reliance on aquifers
Existing
Water Tower
Primary
Connection
Redundant
Connection
Option 3 – Purchase Water from
Minneapolis
Disadvantages
►Loss of control on water costs
►Differences in water quality for customers
Seasonal fluctuations
Disinfection byproducts
►Surface water susceptibility to spills and risk of drought
►Age of Minneapolis distribution system
►Need to increase water rates
►Need 2 connections to Minneapolis for redundancy
41
Option 3 – Purchase Water from
Minneapolis
Estimated
Capital Cost
Finance Cost
(4%
Interest)
Estimated
Annual
O&M Cost
(3.5%
Inflation
Rate)
20-Year Cost
of
Purchasing/
Producing
Water
Total
20-Year
Cost
$9,480,300 $4,471,200 $4,487,800 $17,472,000 $35,911,300
* Costs above include 4% bond financing and 3.5% inflation for yearly operation and maintenance costs.
Option 5 – Implement
Treatment for Dioxane
Advantages
►Physically destroys and removes Dioxane from the
environment
►Reduces risk to others downstream
►Fits within existing treatment process
►Maintain control of water cost and utility rates
►Utilize all existing wells
►Enhanced disinfection and TCE removal
42
Option 5 – Implement
Treatment for Dioxane
Disadvantages
►Additional operator
training
►Upfront capital
expenditure
►Reliant on single
equipment vendor
►Dependent on ability of
AOP system to treat other
contaminants that
emerge
Option 5 – Implement
Treatment for Dioxane
Estimated
Capital Cost
Finance Cost
(4%
Interest)
Estimated
Annual
O&M Cost
(3.5%
Inflation
Rate)
20-Year Cost
of
Purchasing/
Producing
Water
Total
20-Year
Cost
$7,177,600 $3,385,200 $1,080,200 $4,954,000 $16,597,000
* Costs above include 4% bond financing and 3.5% inflation for yearly operation and maintenance costs.
43
Project Costs / Recommendation
Option
Estimated
Capital
Cost
Finance
Cost (4%
Interest)
Estimated
Annual
O&M Cost
(3.5%
Inflation
Rate)
20-Year
Cost of
Purchasing
/
Producing
Water
Total
20-Year
Cost
2 $7,115,600 $3,356,000 $2,812,300 $4,954,000 $18,237,900
3 $9,480,300 $4,471,200 $4,487,800 $17,472,000 $35,911,300
5 $7,177,600 $3,385,200 $1,080,200 $4,954,000 $16,597,000
* Costs above include 4% bond financing and 3.5% inflation for yearly operation and maintenance costs.
Recommendation: Option 5
Treatment Plant Expansion
44
Treatment Plant Expansion
Treatment Plant Expansion
45
Treatment Plant Expansion
Project Schedule
Council Accept Feasibility/Order Plans/
Authorize Ad for Bid April 12, 2016
Receive Bids/Award Contract August 2016
Begin Construction October 2016
Start-Up August 2017
46
Questions?
47
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48
Building a legacy – your legacy. 701 Xenia Avenue South
Suite 300
Minneapolis, MN 55416
Tel: 763-541-4800
Fax: 763-541-1700
April 12, 2016
The Honorable Mayor, City Council and Staff
c/o Mark Casey
City of St. Anthony Village
3301 Silver Lake Road NE
Minneapolis, MN 55418-1603
Re: St. Anthony Village 1,4-Dioxane Feasibility
St. Anthony Village, MN
WSB Project No. 3183-00
Dear Honorable Mayor, City Council, and Staff:
We are pleased to present to you the attached St. Anthony Village 1,4-Dioxane Feasibility Report which
analyzed the following options for addressing concerns presented by the presence of 1,4-Dioxane
(Dioxane) in the City’s water supply:
• Option 1: Blend City Wells
• Option 2: Construct Deeper Mount-Simon Hinckley Wells
• Option 3: Purchase Water from Minneapolis Water
• Option 4: Purchase Water from St. Paul Regional Water
• Option 5: Implement a Water Treatment System for Dioxane
Additionally attached for your consideration is a resolution accepting the feasibility report and
authorizing preparation of final plans, specifications, and advertisement for bid of Option 5.
If you have any questions or concerns, you may call me at 763-287-7182, and I will be present at your
April 12, 2016 Council Meeting.
Sincerely,
WSB & Associates, Inc.
Todd E. Hubmer, PE
City Engineer
Attachments
Equal Opportunity Employer
wsbeng.com K:\02170-290\Admin\Meeting\LTR-AOP Facility-040416.docx
49
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50
St. Anthony Village
3301 Silver Lake Road NE • St. Anthony, MN 55418
December 8, 2015
St. Anthony Village
1,4-Dioxane
City of St. Anthony Village
Hennepin and Ramsey Counties, Minnesota
WSB Project No. 3183 -00
51
ST. ANTHONY VILLAGE 1,4-DIOXANE FEASIBILITY STUDY
FOR THE
CITY OF ST. ANTHONY VILLAGE, MINNESOTA
December 8, 2015
Prepared By:
WSB & Associates, Inc.
701 Xenia Avenue South, Suite 300
Minneapolis, MN 55416
763-541-4800
763-541-1700 (Fax)
52
I hereby certify that this plan, specification, or report was prepared
by me or under my direct supervision and that I am a duly
Licensed Professional Engineer under the laws of the State of
Minnesota.
Greg F. Johnson, PE
Date: December 8, 2015 Lic. No. 26430
53
TITLE SHEET
CERTIFICATION SHEET
TABLE OF CONTENTS
1. EXECUTIVE SUMMARY ..................................................................................................... 1
2. INTRODUCTION ................................................................................................................... 2
2.1 Authorization ................................................................................................................ 2
2.2 City Standards and Objectives ...................................................................................... 2
2.3 Study Scope .................................................................................................................. 2
2.4 Background ................................................................................................................... 2
3. EVALUATION OF OPTIONS .............................................................................................. 4
3.1 Option 1: Blend City Wells .......................................................................................... 4
3.2 Option 2: Construct Deeper Mount-Simon Hinckley Wells ........................................ 6
3.3 Option 3: Purchase Water from Minneapolis Water .................................................... 9
3.4 Option 4: Purchase Water from St. Paul Regional Water .......................................... 12
3.5 Option 5: Implement a Water Treatment System for Dioxane .................................. 13
4. COMPARISON OF OPTIONS ............................................................................................ 19
Appendix A
Preliminary Analysis of Providing Water to Saint Anthony Village Memorandum
Appendix B
St. Anthony Village UV-AOP Pilot P roject Trojan UBPhoxTM Advanced Oxidation
System Pilot System Test Report
Appendix C
Evaluation of Hydrogen Peroxide with Ozone and Bioremediation for Treatment of
Dioxane
Appendix D
Cost Estimates
54
1. EXECUTIVE SUMMARY
The St. Anthony Village City Council authorized WSB & Associates, Inc. to study the
available options to address 1,4-Dioxane (Dioxane) that has been detected in the City’s
water supply and provide a long term, reliable source of potable water that meets all the
recommended State and Federal health guidelines. This Feasibility Report summarizes
these options. There may be sources of third-party funding to pay for some or all of the
costs associated with remedial action to address the Dioxane contamination. This
Feasibility Report does not attempt to assess the likelihood or scale of such funding, and
does not evaluate remedial options based on funding source or amount.
Dioxane has been detected in the City’s three drink ing water wells since March 2015,
likely emanating from the Twin Cities Army Ammunition Plant in Arden Hills (TCAAP).
Dioxane is used to stabilize chlorinated solvents and can be found in personal care
products, laundry detergents, and food in small amounts. TCAAP used Dioxane as an
additive in the solvents used at the facility. Other contaminants from TCAAP have been
detected since the early 1980s in the aquifers supplying groundwater for the City. In
contrast, Dioxane was recently classified as an emerging contaminant by the
Environmental Protection Agency (EPA), and testing for Dioxane in the aquifers below
the City first occ urred in March 2015.
This report summarizes five options that were selected for analysis as possible means to
address Dioxane in the City’s drinking water:
• Option 1 – Blend the existing wells;
• Option 2 – Construct deeper Mount-Simon Hinckley wells;
• Option 3 – Purchase water from Minneapolis Water;
• Option 4 – Purchase water from St. Paul Regional Water; and
• Option 5 – Implement treatment to remove Dioxane.
During initial screening, Options 1 and 4 were determined to be either ineffective and/or
clearly inferior to other measures, and were therefore not analyzed in detail. Costs were
evaluated for Options 2, 3, and 5 as these were the options that were determined to be
most feasible. A 3.5% inflation rate was assumed for the O&M costs to match other
programs within the City. The total estimated 20-year capital costs and operation and
maintenance costs for each of these options is as follows:
Option
Estimated
Capital
Cost
Finance
Cost
(4%
Interest)
Estimated 20-
Year O&M
Cost
(3.5% inflation
rate)
20-Year Cost
of
Purchasing/
Producing
Water
Estimated
Total 20-
Year Cost
2 $7,115,600 $3,356,000 $2,812,300 $4,954,000 $18,237,900
3 $9,480,300 $4,471,200 $4,487,800 $17,472,000 $35,911,300
5 $7,177,600 $3,385,200 $1,080,200 $4,954,000 $16,597,000
55
2. INTRODUCTION
2.1 Authorization
The St. Anthony City Council authorized WSB & Associates, Inc. to study the available
options to address 1,4-Dioxane (Dioxane) that has been detected in the City’s water
supply and provide a long term, reliable source of potable water that meets all the
recommended State and Federal health guidelines. This Feasibility Report summarizes
these options.
2.2 City Standards and Objectives
The City of St. Anthony Village has the following Standards and Objectives as they
relate to providing drinking water for its residents and customers:
1. Provide safe, reliable, and high quality drinking water for its residents and customers
2. Provide adequate quantities of water for fire protection and maximum day demands
3. Provide a robust drinking water system that can withstand the test of time
4. Be environmentally responsive
5. Be fiscally responsible
6. Maintain its own destiny and control
2.3 Study Scope
This r eport summarizes five options that were selected to address Dioxane in the City’s
drinking water:
• Option 1 – Blend the existing wells;
• Option 2 – Construct deeper Mount -Simon Hinckley wells;
• Option 3 – Purchase water from Minneapolis Water;
• Option 4 – Purchase water from St. Paul Regional Water; and
• Option 5 – Implement treatment to remove Dioxane.
2.4 Background
Trichloroethylene (TCE) has been detected in the City’s water supply since the 1980’s
and this contaminant is currently being treated at the City’s water treatment plant.
Dioxane testing in St. Anthony wells first occurred in March of 2015 by the Minnesota
Department of Health. This testing was initiated in response to the presence of Dioxane
at levels higher than the Health R isk Limit (HRL) in nearby municipal supply wells.
This testing indicated that Dioxane is currently present in the City’s three drinking water
wells. In addition to the MDH testing, the City has been testing for Dioxane monthly
since March of 2015. The results of the Dioxane tests are shown in Table 1.
56
Table 1: Dioxane Concentrations in City Wells
Date Well No. 3 Well No. 4 Well No. 5
March 2015 Not Sampled 0.90 ppb 0.57 ppb
June 2015 0.37 ppb 1.5 ppb Not Sampled
August 2015 0.34 ppb 1.5 ppb 0.99 ppb
September 2015 0.41 ppb Not Sampled (*) 1.0 ppb
October 2015 0.39 ppb Not Sampled (*) 0.94 ppb
November 2015 0.32 ppb Not Sampled (*) 0.99 ppb
(*) Not sampled because well has been shut down
Dioxane is used to stabilize chlorinated solvents and can be found in personal care
products, laundry detergents, and food in small amounts. The TCAAP in Arden Hills
used Dioxane as an additive in the solvents used at the facility and has been identified as
the source of the contamination into the aquifer. The current Dioxane concentration at
TCAAP has recently been detected as high as 60 parts per billion (ppb).
Dioxane is classified as an emerging contaminant by the Environmental Protection
Agency (EPA). Currently, there is not an established Maximum Contaminant Level
(MCL) for Dioxane. However, the EPA has identified thresholds of 3.5 parts per billion
(ppb) to prevent a 1:100,000 increase in cancer risk level and 0.35 ppb to prevent a
1:1,000,000 increase in cancer risk level.
At least one EPA region has recommended 0.35 ppb as the appropriate limit for Dioxane.
At the state level, allowable levels of Dioxane in drinking water have been established.
The Minnesota Department of Health (MDH) has recommended keeping exposures at or
below a health risk limit (HRL) of 1 ppb over a lifetime. Similarly, the states of
California and Massachusetts have established recommendations at 1 ppb and 0.3 ppb,
respectively.
The City currently operates three groundwater wells (Well No s. 3, 4, and 5) to supply the
City’s drinking water. Until the City recently stopped using Well No. 4, t he City was
operating two wells full time with the third well for peaking and back up when one of the
other wells was out of service for repair and maintenance. Having one current well with
high levels of 1,4 Dioxane is now burdening the City’s daily operations. Test results by
the MDH, independently verified by the City, have shown the presence of Dioxane in the
City’s wells. The concentrations have ranged from 0.35 ppb in Well No. 3 to 1.5 ppb in
Well No. 4. The concentrations detected in Well No. 4 have increased when compared to
the previous test results.
57
3. EVALUATION OF OPTIONS
The City’s ability to operate its municipal drinking water supply system has been
impacted by the presence of Dioxane at levels over 1ppb in Well No. 4. The uncertainty
of future impacts to the remaining two wells by Dioxane has initiated the need for the
City to evaluate alternatives to provide dependable safe supplies of water to the public at
levels less than 1 ppb.
This report summarizes five options that were selected for analysis as possible means to
address Dioxane in the City’s drinking water:
• Option 1 – Blend the existing wells;
• Option 2 – Construct deeper Mount -Simon Hinckley wells;
• Option 3 – Purchase water from Minneapolis Water;
• Option 4 – Purchase water from St. Paul Regional Water; and
• Option 5 – Implement treatment to remove Dioxane.
Descriptions for each option, the benefits and costs are provided below:
3.1 Option 1: Blend City Wells
The first option is to blend the City’s three existing groundwater wells prior to
distribution in an effo rt to dilute the higher concentrations of Dioxane to acceptable
health levels.
Description
St. Anthony draws its drinking water from three wells, labeled Well Nos. 3, 4, and 5
(Well Nos. 1 and 2 were taken out of service and abandoned). Well Nos. 4 and 5 draw
water exclusively from the Jordan Aquifer, while Well No. 3 is screened to draw water
from both the Jordan and Prairie du Chien Aquifers. To meet the City’s water needs, the
City must have two wells operating at any given time, and sound management also
requires having the third well available as a backup during maintenance of other wells, or
in the event of an emergency.
Historically, the City would rotate usage of the wells. Since the installation of the
Carbon plant , the City has primarily depended on the operation of Well Nos. 4 and 5, as
the operation of Well No. 3 appears to deplete the carbon in the filters at a more rapid
rate than the use of the other two wells
The current wells are not equipped with Variable Frequency Drives (“VFD s”), meaning
that water is drawn at equal flow rates from the two wells that are operating. This limits
the ability of the current operation to blend water from the wells in a controlled and
efficient manner.
58
The concentrations of Dioxane have varied between Well Nos. 3, 4, and 5, with Well
Nos. 3 and 5 staying below 1 ppb, and Well No. 4 exceeding 1 ppb. The City has not
used Well No. 4 since Dioxane levels detected in this well exceeded 1.0 ppb.
Well Nos. 3 and 5 could be blended to reduce the total concentration of Dioxane in Well
No. 4 to below 1 ppb at the point of consumption. The long term viability of blending is
unknown as Dioxane concentrations may increase to levels that prohibits blending.
The City is currently blending Well Nos. 3 and 5 to keep Dioxane concentrations below 1
ppb. However, Well No. 3 is currently in need of rehabilitation, which would require
taking it out of service for a number of months. The City does not currently have a viable
means to blend Wells No. 4 and 5 to keep Dioxane below 1 ppb during the rehabilitation
of Well No. 3. The City may need to add VFDs to the existing wells in order to control
the blending process, provide flexibility in the use of the existing wells, and control the
concentration of Dioxane into the system.
Advantages
This option would provide the following advantages:
1. Minimal additional capital costs and operator training
2. Can be done immediately
3. Addition of variable frequency drives for pumps could provide better blending
4. Buys time while longer -term solutions are evaluated and implemented and MCL
regulations are further updated
Disadvantages
This option would provide the following disadvantages:
1. There is a reasonable likelihood that the Dioxane concentration in the City’s
aquifer could increase over time based on historical concentrations and trends (see
Table 1 in Section 2.4). As stated previously, the concentrations detected at the
TCAAP are as high as approximately 60 ppb and the concentrations detected in
the City wells has increased over the short time period the City has been
monitoring.
2. If the MDH establishes an MCL for Dioxane at or near 1 ppb, the City will be left
without a technology to effectively meet the future regulations. Dioxane is
currently classified as an emerging contaminant, meaning not enough information
is known on the contaminant and an MCL has not yet been established. It is
expected that the EPA will continue to study this contaminant and could set an
MCL at some point in the future. Blending the water could be only a short term
solution depending on a future MCL that could be established by the EPA.
3. The City currently has Well No. 4 shut down because the Dioxane concentration
in this well now exceeds the MDH’s recommended health risk limit. Although it
is unknown until additional sampling and laboratory results become available;
59
there is a reasonable likelihood that the contaminant plume will eventually move
towards Well Nos. 3 and 5 and produce higher concentrations of Dioxane as these
wells are used to pump more water from the aquifer. This condition could also
prohibit blending depending on the concentrations of Dioxane detected over time.
4. Blend ing the well water would not remove Dioxane from the environment like
other treatment options. Blending the well water reduces the concentration at the
point of consumption but the overall concentration within the environment would
remain untreated.
5. The manganese levels in Well No. 3 are the greatest of the three wells. Therefore,
pumping this well at a higher rate to blend and reduce the Dioxane concentrations
in the blended water would increase the manganese levels that are treated by the
water treatment plant. Shorter filter runs would be experienced because of the
higher manganese concentrations. This would require the filters to be
backwashed more frequently and higher chemical dosages would be required to
oxidize and treat the higher levels of manganese at the water treatment plant.
6. Blending the City’s wells could become more complicated in the future when
Well No. 3 requires major rehabilitation. Well No. 3 has been grandfathered-in as
a multi-aquifer well and the DNR no longer allows multi-aquifer wells to be
constructed. The DNR may not allow major rehabilitation or redesign to be done
to this well. T herefore, a new well may need to be constructed that could produce
higher concentrations of Dioxane.
7. Because of aquifer limitations, at least three wells must always be operable to
provide firm capacit y and supply adequate volumes of water for the City’s
demands. If one well goes down, with only two wells in service blending could
be prohibited.
Estimated Capital and Long Term O&M Costs
The City well pumps are not equipped with VFDs that would allo w the pumping rates to
be varied as needed to optimize blending. The wells can be manually throttled to adjust
the pumping rates, resulting in reduced capacity and consumption of additional energy.
This option does not appear to be feasible as concentrations of Dioxane in the City's wells
are likely to exceed 1ppb at which point blending will no longer provide drinking water
below 1 ppb. Ultimately, this option does not have the ability to reduce Dioxane
concentrations should they increase in the City’s wells in the future. Therefore, estimated
capital and O&M costs to implement Option 1 were not further studied.
3.2 Option 2: Construct Deeper Mount-Simon Hinckley Wells
The second option analyzed was to construct and utilize deeper Mount -Simon H inckley
wells instead of the Jordan Aquifer wells that are currently being used by the City. The
60
City of New Brighton is currently using the Mount-Simon Hinckley Aquifer to supply its
water system.
Description
The Mount -Simon Hinckley Aquifer is the deepest bedrock formation in the Twin Cities
and at a significantly deeper depth than the Jordan Aquifer. This aquifer is confined and
less susceptible to surficial contaminants such as Dioxane that exists in the Jordan
Aquifer. Options were analyzed to convert the existing wells into deeper Mount-Simon
Hinckley wells or drill new wells into the Mount -Simon Hinckley Aquifer.
New Mount -Simon Hinckley wells can potentially be drilled although it is very
uncommon for the DNR to approve them. The State of Minnesota currently has a
moratorium that restricts the use of the Mount -Simon Hinckley Aquifer in the Twin
Cities Metropolitan Area. Therefore, the DNR does not issue appropriation permits to
cities to pump groundwater from this aquifer.
The City would be required to receive a variance from the DNR before this option could
be fully analyzed. There is no guarantee that the DNR would issue a variance for these
wells to St. Anthony Village. Variances are provided only when no other water supply
options exist for a public water system.
Well No. 4 in St. Anthony Village cannot be converted into a deeper Mount-Simon
Hinckley well because a 10-inch casing would need to be installed inside the existing 18-
inch casing to comply with the Minnesota Well Code. The 10-inch casing would not
allow a large enough well pump to be installed inside the well to produce the needed
capacity to make this option feasible. Well Nos. 3 and 5 could potentially be converted
to Mount-Simon Hinckley wells; however, this option is not cost effective since it would
require the open hole at that base of the existing Jordan wells to be completely grouted.
This is very costly and difficult from a constructability standpoint.
Advantages
This option would provide the following advantages:
1. The Mount Simon-Hinckley Aquifer does not contain any known concentrations
of TCE or Dioxane.
2. The Mount -Simon Hinckley Aquifer is better confined and protected from other
potential contaminants or sources of surface contamination compared to the upper
aquifers (Jordan Aquifer , etc.).
3. The City of St. Anthony would maintain control of its water production and water
rates.
Disadvantages
This option would provide the following disadvantages:
61
1. The Mount -Simon Hinckle y Aquifer is likely to contain concentrations of radium
that exceed the EPA MCL for combined Radium 226+228.
o Radium is required to be removed from drinking water to below the MCL.
The City’s existing treatment system, specifically the greensand filters,
would remove most of the radium.
o Once the radium is removed, it will accumulate on the filter media,
making the media radioactive.
o Radium cannot be effectively backwashed from greensand media, so the
media would need to be replaced on a more frequent basis to reduce the
plant operators’ exposure to the radioactive media.
o Disposal of radioactive media is expensive and very few landfills across
the country will accept the material.
o The water treatment plant HVAC systems would likely need to be
increased in size and modified to provide more air changes throughout the
day as the radium will decay to radon gas.
o The air quality within the treatment facility could be become hazardous
when radon is emitted into the air. This has been found to occur during
filter backwashing when the radioactive filter media is cleaned.
2. The average static water levels in the Mount-Simon Hinckley Aquifer are
approximately 125-feet deeper than the static water levels in the Jordan Aquifer in
the area of St. Anthony Village. As a result, larger well pumps would be required
inside the Mount-Simon Hinckley Wells to pump water from its deeper water
levels. This would increase the City’s electrical utility costs.
3. Constructing and pumping deeper Mount-Simon Hinckley Aquifer wells could
produce groundwater well interference with the City of New Brighton’s water
supply wells. Currently, the City of New Br ighton is utilizing Mount -Simon
Hinckley wells that were constructed before the state moratorium went into effect
for the Mount-Simon Hinckley Aquifer in the Twin Cities. The groundwater
interaction at this aquifer depth was unknown at the time of this study, and
extensive groundwater modeling would be required to predict the potential
interference effects between these wells.
4. It would likely take the DNR at least two years to evaluate and approve the use of
the Mount -Simon Hinckley Aquifer and another one to two years to design and
construct new Mount -Simon Hinckley wells. The City would continue drinking
Dioxane from existing wells during this time.
Estimated Capital and Long Term O&M Costs
Estimated capital and long term O&M costs were based on present worth analysis on the
assumption that the capacity of the Mount-Simon Hinckley Aquifer is less than the
existing capacity of the Jordan Aquifer wells within the City. Therefore, four Mount-
Simon Hinckley wells were assumed to be needed to meet the City’s water demand s.
62
The total estimated cost for Option 2, including contingency and indirect costs, is shown
in Table 2 along with the O&M costs over a 20 year life cycle. A detailed cost estimate
for Option 2 can be found in Appendix D.
Table 2: Option 2 Estimated Costs
Estimated
Capital Cost
Finance
Cost (4%
Interest)
Estimated 20-Year
O&M Cost
(3.5% Inflation
Rate)
20-Year Cost
of
Purchasing/
Producing
Water
Estimated Total
20-Year Cost
$7,115,600 $3,356,000 $2,812,300 $4,954,000 $18,237,900
3.3 Option 3: Purchase Water from Minneapolis Water
The third option analyzed was to purchase water on a wholesale basis and receive treated
water directly from Minneapolis Water through a connection to the City's water
distribution system.
Description
Minneapolis Water treats water supplied from the Mississippi River and distributes
drinking water to the City of Minneapolis and other surrounding communities. This is a
very large and complex water system that dates back to 1867. The main treatment
processes include filtration, disinfection, sedimentation, and filtration. Minneapolis
produces an average of 57 million gallons per day.
Minneapolis Water Pipeline 16 runs from the Hilltop Reservoir along the western border
of St. Anthony Village. This watermain has a capacity of over 40,000 gallons per minute
(gpm) according to Minneapolis Water staff. This pipeline can be connected to the City
of St. Anthony’s water system to meet the City’s water demands.
An interconnection to Minneapolis Water would need to provide adequate fire protection
and meet the City’s maximum day demands. The City’s hydraulic grade line (HGL) and
existing elevated water tower is at least 40 feet higher than the available HGL in the
Minneapolis water distribution system at the interconnection point during static
conditions.
The City’s existing water distribution system is not sized to transmit adequate flow rates
from the Minneapolis water distribution system to the City’s elevated water tower.
Therefore, two water booster stations and two 20-inch wat ermains would need to be
constructed from interconnection points with Minneapolis Water to St. Anthony Village’s
water tower to provide system redundancy in the event that one booster station failed or
one watermain experienced a break.
One watermain would run from the corner of Stinson Boulevard NE along Kenzie
Terrace and north along Silver Lake Road to the water tower at a length of approximately
8,100-feet. The second watermain would run from the corner of Stinson Boulevard NE
63
and Silver Lane NE to 33rd Ave NE and to the water tower at a length of approximately
7,600-feet. Flow meters would need to be installed inside the booster pumping stations to
record the volumes of water purchased from Minneapolis Water. Minneapolis Water
staff studied potential interconnections to its water distribution system and provided a
memorandum that summarizes this study (see Appendix A). The estimated time to
implement this option would be approximately two to three years.
Advantages
This option would provide the following advantages:
1. The City is no longer responsible for treatment and removal of TCE and Dioxane
from the drinking water supply.
2. City residents that currently have home water softeners would save on their
individual water softening costs. Minneapolis Water softens its drinking water to
approximately 80 parts per million (ppm) hardness or about 5 grains. Residential
customers that soften their water may save an average of $6.75 per month in salt
costs.
3. If the ability to draw from the Jordan Sandstone aquifer was retained, connecting
with the Minneapolis system would provide some redundancy in water supplies.
4. Does not rely on groundwater aquifers which are being closely monitored by the
DNR in portions of the Metro Area.
Disadvantages
This option would provide the following disadvantages:
1. The City currently controls its water quality. Purchasing water from Minneapolis
Water would relinquish this control to others while the City would not be able to
address water quality changes.
2. Surface waters, such as the Mississippi River, commonly contain emerging
contaminants’ which could pose a water quality concern if the EPA establishes
MCLs for these constituents within the water. For example, pharmaceuticals are
currently being studied by the EPA and could possibly require further treatment in
the future for drinking water that stems from a surface water supply. This
treatment process may result in an increase in the cost of water.
3. The City would lose control of its water rates by purchasing water from
Minneapolis Water.
4. The water quality of Minneapolis’ drinking water differs in qualit y than that
provided by the City of St. Anthony Village.
64
o Although the concentrations are less than the MCL, Minneapolis’ water
contains higher levels of disinfection byproducts (Haloacetic Acids, Total
Trihalomethanes, etc.) than the water distributed by the City of St.
Anthony Village.
o Minneapolis’ water is supplied from surface water, meaning the influent
water quality has potential to fluctuate throughout the course of a year. In
the spring time during snowmelt and in the summer time during algae
blooms, the water quality within the Mississippi River can produce higher
levels of taste and odor compounds.
5. The potential exists for hazardous materials to spill into the Mississippi River,
either from tanker trucks, rail cars, storm sewers or other sources along the river.
6. The age and redundancy of the Minneapolis Water distribution system is of
concern. The utility contains hundreds of miles of old steel pipe that is yet to be
lined or replaced. These maintenance costs may increase the future cost of
Minneapolis Water.
7. Minneapolis Water most likely has concerns with the long term reliability of the
Mississippi River as its water source. They are currently considering
implementing back-up groundwater wells for its surface water supply. In the
event of a historic drought or an intentional or unintentional contamination event,
the utility would likely not have enough backup capacity in their groundwater
wells to continue to serve all of its customers.
8. The City’s existing water rates would increase. The City would need to collect
enough revenue from water users in the City to cover the cost of purchasing water
from Minneapolis Water as well as to maintain its own existing water distribution
system (such as the water tower, watermains, hydrants, meters) within the City.
9. At least two watermain connect ions, two booster stations, and 20-inch watermain
would need to be constructed across St. Anthony Village to provide redundancy
in case one of the watermains broke or required maintenance.
10. The City would spend in excess of $17 million over 20 years to purchase water
from Minneapolis Water.
Estimated Capital and Long Term O&M Costs
Estimated capital and long term O&M costs were based on present worth analysis on the
assumpt ion that a new 20-inch watermain would need to be installed from two of the
potential connection points defined by Minneapolis Water to the existing St. Anthony
Village water tower, running approximately 15,000-feet in length.
Due to the difference in the hydraulic grade lines (ground elevation plus water pressure)
between the two water distribution systems, two booster pump stations would be required
65
near the connection point s to pump water from the Minneapolis water distribution system
to the elevated water tower and distribution system in St. Anthony Village. These
booster stations would require the acquisition of property for their construction.
The total estimated cost including contingency and indirect costs, is shown in Table 3
along with the O&M costs over a 20 year life cycle. A detailed cost estimate for Option
3 can be found in Appendix D.
Table 3: Option 3 Estimated Costs
Estimated
Capital Cost
Finance
Cost (4%
Interest)
Estimated
Annual
O&M Cost (3.5%
Inflation Rate)
20-Year
Cost of
Purchasing/
Producing
Water
Total 20-Year Cost
$9,480,300 $4,471,200 $4,487,800 $17,472,000 $35,911,300
Current Minneapolis Water Rates
The Minneapolis Water bulk water rate was $2.73 per 1,000 gallons purchased in
2015. The City of St. Anthony Village water rates are in a tiered system ranging from
$2.98 to $4.97 per 1,000 gallons depending on the volume of water used. The City would
need to purchase approximately 320 million gallons per year from Minneapolis Water.
This would add an additional cost to the utility of approximately $873,600 per year or
$17,472,000 over 20 years.
By r emoving the current chemical and pumping costs that are being paid by the City to
operate its existing water treatment facility and wells on a daily basis, the City could save
approximately $39,800 per year in chemical costs, $53,120 in filter media replacement
costs, and $86,990 per year in pumping costs. These cost savings would be minor in
comparison to the costs to maintaining the City’s entire water system. Therefore, the
City would still need to charge its customers about the same current water rates in
addition to paying the Minneapolis bulk water rate while continuing to operate and
maintain its existing water system.
The Minneapolis Water bulk rate includes some funding for future capital improvements
and maintenance. Minneapolis Water uses a 10-year pro forma rate model in which the
rates are set in advance and increased between 2.5 to 4.0 percent annually, depending on
the timing of the utility’s planned capital improvements. The proposed rate increase for
2016 is 3.99%.
3.4 Option 4: Purchase Water from St. Paul Regional Water
The fo urth treatment option analyzed was to purchase water on a whole sale basis from
St. Paul Regional Water Services (SPRWS) through a connection with the City of
Roseville’s water distribution syst em. The City of Roseville receives its drinking water
from SPRWS through the Dale St. Reservoir.
66
Description
Minimal information has been provided by the City of Roseville to analyze this treatment
option. It was unknown at the time of this study if the City of Roseville’s water
distribution system (watermains, booster station, storage, etc.) can supply the required
fire protection and maximum day water demands for St. Anthony Village. However,
enough aspects of the St. Paul Water system were evaluated to conclude that St. Paul
Regional Water Services would have all of the same issues that would be experienced
with Minneapolis Water, and possibly more issues such as Roseville infrastructure
upgrades.
Advantages and Disadvantages
Similar advantages and disadvantages occur with this treatment system as does with the
connection to the Minneapolis Water system.
Estimated Capital and Long Term O&M Costs
It is expected that the costs to purchase water from SPRWS would be as much as, if not
potentially more than, the estimated cost to purchase water from the Minneapolis Water
system. The capital costs required to connect to the Roseville water distribution system
are anticipated to exceed the cost of connect ion to the Minneapolis Water system.
3.5 Option 5: Implement a Water Treatment System for Dioxane
The fifth alternative analyzed is to remove Dioxane to below the recommended health
advisory levels at the existing water treatment plant in St. Anthony Village.
Description
The City’s existing water treatment plant is designed to remove iron, manganese, and
trichloroethylene (TCE) from the City’s three groundwater wells. Greensand filters are
used to filter the iron and manganese and granular activated filters (GAC) are used to
adsorb and remove the TCE. These treatment processes are not capable of removing
Dioxane from the City’s water supplies. The low adsorptive capacity of D ioxane limits
the effectiveness of treatment by GAC according to the United States EPA (Source – EPA
Treatment Technologies for 1,4-Dioxane: Fundamentals and Field Applications).
Conventional treatment methods such as air stripping and reverse osmosis are ineffective
at removing Dioxane due to its low vapor pressure and high solubility. The following
treatment technologies have been evaluated by the EPA at the pilot and full scale levels
for D ioxane:
1) Advanced Oxidation
(a) Ultra -Violet Light with Hydrogen Peroxide
(b) Hydrogen Peroxide with Ozone
2) Bioremediation
After careful review of the advantages, disadvantages, and costs for each of the above
treatment processes, Ultra-Violet Light with Hydrogen Peroxide was further evaluated as
the most feasible treatment option to treat Dioxane in the City’s wells. Hydrogen
67
Peroxide with Ozone and Bioremediation were not further evaluated but are further
discussed in Appendix C.
Advanced Oxidation with Ultra-Violet Light and Hydrogen Peroxide
Advanced oxidation processes (AOP) are commercia lly available for treating Dioxane in
drinking water. Hydrogen peroxide absorbs ultraviolet (UV) light and produces hydroxyl
radicals that oxidize and breakdown Dioxane to non-toxic compounds consisting of
carbon dioxide, water, and residual chloride.
The typical UV and hydrogen peroxide treatment system can effectively remove Dioxane
from drinking water supplies to levels below the current 1ppb HRL and future levels that
may be considered by the EPA (see Figure 1 ).
Figure 1
UV/Hydrogen Peroxide Treatment System, Trojan Technologies UVPhox
There are currently dozens of surface and groundwater UV-oxidation installations
designed for Dioxane removal in operation today. These installations collectively treat
over 250 million gallons of drinking water each day.
A UV/Hydrogen Peroxide treatment syste m was pilot ed inside St. Anthony Village's
existing water treatment plant with assistance from Trojan Technologies, Inc. on August
27, 2015. Representatives of the Minnesota Department of Health were present to
observe the pilot study. Water was obtained from a sample tap located downstream of the
existing greensand filters and upstream of the existing GAC filters. The pilot water was
spiked with excess Dioxane in concentrations ranging between 169 to 197 ppb at variable
flow rates ranging from 0.5 to 2.0 gpm to simulate and demonstrate the effectiveness of
68
the system at removing higher concentrations of Dioxane if they occurred in the City’s
wells in the future.
The removal percentages achieved from the pilot study ranged from 76.56 to 99.96
percent, varying by the concentration of hydrogen peroxide added to demonstrate that a
full scale system could remove Dioxane from the City’s water. The Minnesota
Department of Health did not require any additional testing in addition to the parameters
that were tested in the pilot study. A copy of the pilot study report, as prepared by Trojan
Technologies, is included in Appendix B. A follow-up pilot study is recommended
during the final design phase if this option is selected.
The cost analysis anticipated installing t hree UVPhox units inside a new masonry or
precast concrete building, or WTP addition that would be constructed adjacent to the
existing water treatment plant. Each unit would have a treatment capacity of 1,250 gpm
in which two units combined could treat 2,500 gpm (capacity of two wells pumping) with
the third unit providing redundancy in case one unit fails or requires maintenance.
The new building or WTP addition would include a chemical storage room to contain a
5,000 gallon bulk storage tank, 100 gallon day tank, and chemical feed system for
feeding hydrogen peroxide. The existing effluent piping from the existing greensand
filters would be routed into the new building or WTP addition through a common header
pipe, metered, and connected to the individual treatment units. Automated control valves
would be used to split the flow between the unit(s) that are called for service via an
expanded plant automation control system (PLC/SCADA) to meet the City’s water
demands.
The treated effluent water from the treatment system would be routed back into the
existing pipe gallery of the GAC filter building where the excess hydrogen pero xide
would be quenched and removed by the GAC filters. The estimated time to implement
this option is approximately two years.
Figure 2 shows the location where a full scale UV light and hydrogen peroxide treatment
system could be implemented in the C ity’s existing treatment process.
69
Figure 2 – Existing St. Anthony Village WTP with UV Light and Hydrogen Peroxide
Treatment
70
Advantages of AOP Treatment with Ultraviolet Light and Hydrogen Peroxide
This option would provide the following advantages:
1. This treatment option physically destroys and removes Dioxane from the
environment. While the AOP would reduce the concentrations at the point of
consumption, it would also help “clean-up” the Dioxane that exists in the
environment. There are no other contaminates created that require hazardous
disposal.
2. Cleaning up Dioxane from the aquifer would reduce risk to other users of the
aquifer located downstream of St. Anthony Village.
3. The UV and hydrogen peroxide feed system could be implemented with the
existing treatment process that already includes pretreatment for iron and
manganese and downstream GAC filters for removing excess hydrogen peroxide.
4. The City would maintain complete control of its water supply, water quality, and
water rates without being dependent on another water utility.
5. The City would be able to pump each of its wells as needed to meet the City’s
water demands unlike the current condition that requires Well No. 4 to be shut
down.
6. Dioxane could be effectively removed from the City’s water supply ensuring
compliance with the current and future EPA and MDH recommended health risk
limits.
7. Other treatment benefits include enhanced disinfection and removal of TCE and
other volatile organic compounds (VOCs), N-nitrosodimethylamine (NDMA),
endocrine disruptor compounds, and pesticides.
Disadvantages
This option would provide the following disadvantages:
1. Implementing the treatment option would require additional operator training and
time to operate and maintain the treatment system.
2. Treatment would involve a significant up-front capital expenditure.
3. The City would be reliant on a single equipment vendor (Trojan Technologies).
4. Although AOP Treatment with Ultraviolet Light and Hydrogen Peroxide appears
to have robust treatment capability for a wide array of contaminants, the City
would be dependent on the effectiveness of the system in treating other
contaminants that may emerge.
71
5. The City would be reliant on a single groundwater source.
Estimated Capital and Long Term O&M Costs
Estimated capital and long term O&M costs were based on present worth analysis. The
total estimated cost for Option 5, including contingency and indirect costs, are shown in
Table 4 along with the estimated O&M costs over a 20-year life cycle. A detailed cost
estimate for Option 5 can be found in Appendix D.
Table 4: Option 5 Estimated Costs
Estimated
Capital Cost
Finance
Cost (4%
Interest)
Estimated
O&M Cost
(3.5% Interest
Rate)
20-Year Cost
of
Purchasing/
Producing
Water
Total 20-Year Cost
$7,177,600 $3,385,200 $1,080,200 $4,954,000 $16,597,000
72
4. COMPARISON OF OPTIONS
Table 5 provides a comparison of the advantages and disadvantages of each Dioxane
treatment option while Table 6 provides a comparison of the total 20-year cost of each
Dioxane option.
73
Table 5: Comparison of Options
Option 1
(Blend Wells)
Option 2
(Construct Mt. Simon-Hinckley
Wells)
Option 3 and 4
(Purchase Water from
Minneapolis or St. Paul)
Option 5
(Implement Treatment)
Advantages Disadvantages Advantages Disadvantages Advantages Disadvantages Advantages Disadvantages
Low capital and
O&M costs
Does not provide
permanent solution
to meet MDH and
EPA considerations
No TCE in
source water
Radium must be
removed from
source water
No TCE
Vulnerable to
emerging
contaminants
Removes Dioxane
from environment
completely
More operator
training required
for operations
staff
Can be done
immediately
Short term solution
only
No Dioxane
in source
water
Sand filters become
radioactive.
Disposal of
radioactive material
is expensive.
Exposure to staff
will require changes
to plant
No Dioxane Seasonal changes
in water quality
City maintains
control of its water
quality and rates
Increased annual
operating costs
Addition of VFDs
could provide
better blending
Increased
manganese
concentrations
DNR likely would
not allow
Softened
water
Vulnerable to
hazardous spills
Cleaning up the
aquifer of Dioxane
would reduce
liability and risk of
other downstream
users
The City would
be reliant on a
single equipment
vendor
Pumps need to be
throttled or VFDs
installed
Potential
groundwater well
interference
Could serve
as a back-up
source
Age of system
Will remove other
TCE, other VOCs,
and other emerging
contaminants
The City would
be reliant on a
single
groundwater
source
Does not remove
Dioxane from
environment
Higher pumping
costs
Does not
rely on
groundwater
aquifers
Loss of control of
water quality and
rates
Well No. 3 is multi-
aquifer well
Does not remove
Dioxane from
environment
Minimal system
redundancy
Reliant on operation
of all three wells for
blending to occur
Does not remove
Dioxane from
Environment
74
TABLE 6 – COMPARISON OF TOTAL COSTS
OPTION 20-YEAR TOTAL COST
2 $18,237,900
3 $35,911,300
5 $16,597,000
75
APPENDIX A
PRELIMINARY ANALYSIS OF PROVIDING WATER TO SAINT ANTHONY VILLAGE
MEMORANDUM
76
Memo - SAV Connection_2015_0818 Page 1 of 3
Public Works - Water Treatment and Distribution Services
Engineering
4300 Marshall St. NE
Minneapolis, MN 55421
Memorandum
To: Glen Gerads
CC: Shahin Rezania
From: Peter Pfister
Date: 8/18/2015
Subject: Preliminary Analysis of Providing Water to Saint Anthony Village
Objectives
1. Identify one or more locations for connection between the City of Minneapolis and Saint Anthony
distribution systems. Factors to consider:
a. Size / capacity of the main to which connection is to be made.
b. Length of required connecting main and other possible indicators of an economical connection.
2. Characterize the approximate static and residual pressures at the potential points of connection, assuming a
maximum steady flow of 3,000 GPM into the Saint Anthony distribution system.
3. Items not in the scope of this analysis include:
a. Research into utilities, geotechnical, or other conditions that may impact constructability or cost.
b. Consideration of siting for pumping station or pressure reducing valves or vaults.
c. Detailed condition assessment of existing water mains under consideration.
d. Detailed hydraulic analysis.
e. Cost estimates
Summary of Findings
The Saint Anthony Village water system is south of the Hilltop finished water reservoirs owned by the City
of Minneapolis. The portion of the Minneapolis Distribution System that abuts the Saint Anthony Village
water system is a boosted pressure zone, called Northeast High Service Area. It is assumed undesirable
from the City of Minneapolis standpoint to connect to mains within the Northeast High Service Area.
However, a major pipeline, Pipeline 16, is located near the border of Saint Anthony Village, and is not part
of the Northeast High Service Area. Pipeline 16 is provided its pressure by the Hilltop reservoirs.
Minneapolis has a pumping capacity of over 40,000 GPM to maintain the levels at Hilltop, so the 3000 GPM
demand for Saint Anthony Village can be readily accommodated.
77
Memo - SAV Connection_2015_0818 Page 2 of 3
Two potential options for connection to the City of Minneapolis water system by Saint Anthony Village
were identified for evaluation:
1. Connection to Pipeline 16 at one of several possible locations between 40th Avenue Northeast and
Lowry Avenue Northeast.
2. Providing a connection to the outlet piping of the Hilltop reservoirs at Stinson Boulevard between
45th Avenue NE (County Road E) and 5th Street NW, and routing a new water main South on Stinson,
East on County E, and South on Silver Lake Road and connecting with the existing 12” Saint Anthony
Village water main. This new water main could possibly be combined with a main serving the City of
New Brighton. The length of the main required would be approximately 4,400 feet along this route.
Because of the length of the main and the significance of the roads along the route, this option was
not considered further.
Four potential locations for connection to Pipeline 16 were evaluated, with any number of other locations
potentially being viable for consideration.
Further Discussion of Option 1
Pipeline 16 is a 48-inch welded steel water main constructed 1949-1950, which begins at the Hilltop
Reservoirs. There are a total of four interconnected reservoirs at Hilltop with a total capacity of 72 million
gallons. The pressure for Pipeline 16 under normal operation is controlled by the level in the Hilltop
Reservoirs and regulated by a control valve located downstream where the pipeline runs through the
Columbia Heights treatment campus. The City of Minneapolis has adequate pumping capacity with
sufficient redundancy to be able to continue to maintain sufficient levels in the Hilltop Reservoirs to
accommodate additional consumption as considered in this study. Pipeline 16 is part of the City of
Minneapolis outer transmission main loop and is routed south along Arthur Street, Benjamin Street, and
Stinson Boulevard to Lowry Avenue NE, and continues south. Pipeline 16 was field-lined in 1963 with
cement mortar. Elevations and pressures are as follows:
Hilltop Reservoirs Water Surface Elevation
o Range: 1054 -1074 feet above Mean Sea Level (MSL) (overflow)
Pipeline 16 Control Valve at Columbia Heights Campus
o Outlet Pressure HGL
Approximate Range = 1045 – 1061 feet above MSL
Normal Operation = 1050 feet above MSL
Table 1 lists several possible connection points to Pipeline 16 giving ground elevation at these points, as
well as the corresponding approximate hydraulic grade lines based on the normal control valve outlet
pressure of 1050 feet MSL. Head losses are not included, as the flow in Pipeline 16 is typically in the range
of 25-35 MGD and head losses for purposes of this analysis are relatively small. Also included are
approximate distances to potential points of connection to the Saint Anthony distribution system. It is
assumed given the size of the Pipeline 16 that further evaluation of residual pressures is unnecessary at this
time.
78
Memo - SAV Connection_2015_0818 Page 3 of 3
Table 1 – Summary of Possible connections to Saint Anthony Village Distribution System
Option Connection
Location
(Minneapolis)
Connection Location
(St. Anthony Village)
Ground
Elevation
(ft MSL) at
point of
connection
to MPLS
Approx.
Grade Line
(ft) at point
of connection
to MPLS1
Correspond
ing
pressure
(psi) at
point of
connection
to MPLS
Approx.
Length of
New
Connecting
WM (ft)
1-A Pipeline 16 40th Avenue at Arthur
Place NE (8” Water
Main)
980 70
30 1,100
1-B Pipeline 16 Stinson Boulevard at
27th Avenue NE (8”
Water Main)
918 132 57 50
1-C Pipeline 16 Stinson Boulevard at
26th Avenue NE (north
of intersection) (8”
Water Main)
924 126 55 50
1-D Pipeline 16 Stinson Boulevard at
Lowry Av. NE (10”
Water Main)
932 118 51 450
1 – Based upon “typical” control valve outlet pressure of 1050’ as provided by City of Minneapolis Water
Operations. Ranges of expected pressures may be predicted by varying control valve outlet pressure within
the ranges provided above.
Other Options not Evaluated
Connection to other water mains to the west of Saint Anthony Village was not considered because all of
these mains were within the Northeast High Service area. Northeast High Service Pump Station has a firm
capacity of 2,500 GPM, which is less than the stated maximum demand of 3,000 GPM for Saint Anthony
Village.
79
APPENDIX B
ST. ANTHONY VILLAGE UV-AOP PILOT PROJECT TROJAN UVPHOX ADVANCED
OXIDATION SYSTEM PILOT SYSTEM TEST REPORT
80
Saint Anthony Village UV-AOP Pilot Project
TrojanUVPhox™ Advanced Oxidation System
Pilot System Test Report
October 16, 2015
81
Table of Contents
1 INTRODUCTION ....................................................................................................................................... 2
2 UV-OXIDATION FUNDAMENTALS ........................................................................................................ 2
2.1 Treatment mechanisms ...................................................................................................................... 2
2.2 Water quality parameters .................................................................................................................. 3
2.2.1 UV Transmittance......................................................................................................................... 3
2.2.2 Hydroxyl Radical Scavenging Demand ......................................................................................... 3
2.3 The electrical energy per order parameter ........................................................................................ 3
2.3.1 Parameters affecting E EO .............................................................................................................. 4
3 PILOT SYSTEM DESIGN .......................................................................................................................... 5
3.1 approach to the UV-AOP Study......................................................................................................... 5
3.2 uv -aop pilot system design.................................................................................................................. 6
4 UV-AOP SYSTEM TEST PROCEDURES ................................................................................................. 8
4.1 UV-AOP Mixing test procedure ......................................................................................................... 8
4.2 uv -aop performance test procedure ................................................................................................... 8
4.3 sample handling and analysis ............................................................................................................. 9
5 RESULTS AND DISCUSSION ................................................................................................................ 10
6 FULL-SCALE SYSTEM SIZING ............................................................................................................. 17
6.1 Design Criteria ................................................................................................................................. 18
7 CONCLUSIONS ....................................................................................................................................... 20
82
1 INTRODUCTION
This document describes the work performed to demonstrate the ultraviolet/hydrogen peroxide
(UV/H 2 O 2 ) advanced oxidation process (AOP) for treating various 1,4-dioxane present in the potable
groundwater well of The City of St. Anthony Village, Minnesota water t reatment plant . The primary
goals of the study were to demonstrate the ability of the UV/H 2O 2 process to treat the contaminants in
question and provide the basis to determine the economic costs of implementing and maintaining a
full-scale system. To facilitate these goals Trojan Technologies has supplied, installed and operated a
small pilot-scale UV/H 2 O 2 system. The tests were performed on August 26th and 27th, 2015. This
document provides a brief description of the procedures and results of these tests .
The treatment process at the St. Anthony water treatment plant comprises greensand filtration for iron,
manganese and turbidity removal followed by GAC for 1,4-dioxane and VOC removal. 1,4-dioxane is
very poorly adsorbed by GAC and the required change-out frequency makes it prohibitively expensive
to operate. It is proposed to locate UV/H 2O 2 AOP upstream of the GAC contactors to allow the
oxidation process to treat 1,4-dioxane and many of the VOCs and allow the GAC to quench the
residual H 2O 2 leaving the UV reactor and provide a second barrier to VOCs.
2 UV-OXIDATION FUNDAMENTALS
2.1 TREATMENT MECHANISMS
UV-based advanced oxidation processes rely upon the simultaneous mechanisms of direct UV
photolysis and UV oxidation to degrade chemical contaminants in water. UV -photolysis is the process
by which chemical bonds of the contaminants are broken by the energy associated with UV light. UV-
photolysis does not require the addition of H2O2. UV -Oxidation systems rely on the in-situ generation of
hydroxyl radicals (•OH) by way of the UV-photolysis of H2O 2 and the subsequent oxidation of chemical
contaminants by those hydroxyl radicals.
Hydrogen peroxide is commercially available as aqueous solutions of varying strength. The solutions most
commonly employed in UV oxidation processes for water treatment are either 35% or 50% by weight and
are certified to meet NSF/ANSI Standard 60 requirements. Hydrogen peroxide is a relatively weak absorber
of UV light having a molar absorption coefficient at 254 nm of 19.6 L mole-1 cm-1. Nevertheless, the
quantum yield of hydrogen peroxide UV photolysis is relatively high. Therefore, the UV/H 2O2 process is
one of the most efficient advanced oxidation processes.
Hydroxyl radicals are extremely reactive, short lived and unselective transient species. The mean lifetime of
hydroxyl radicals in natural water in the presence of natural organic matter (NOM) and alkalinity is
estimated to be in the order of 10 μs (Oppenlander 2002). Therefore, the high reactivity and short life of
these chemical species result in the requirement of in-situ generation of these oxidants. They will not exist
beyond the boundaries of the UV reactor volume.
Hydroxyl radicals can oxidize organic and inorganic compounds by various types of reactions, comprising
electron transfer reactions, hydrogen abstraction and electrophilic addition. In UV oxidation treatment
processes the desired reactions are the oxidation of specific contaminant molecules.
83
2.2 WATER QUALITY PARAMETERS
2.2.1 UV Transmittance
UV transmittance (UVT) is the ratio of UV light transmitted through the sample to that transmitted
through a reference solution. UVT is measured using a UV spectrophotometer. Reagent grade water
is typically used as the reference solution (i.e., UVT = 100%). UV absorbance (Aλ )] measures the
amount of light absorbed by a solution over a given path length (l) and at a given wavelength (λ).
UVT and UV absorbance are related by the following equation:
UVT=10-Aλx100
The typical cell pathlength is 1 cm and both transmittance and absorbance values are commonly
reported per cm. A key reference wavelength, and one at which UVT is often reported, is 254 nm.
This wavelength is used because it is the wavelength at which a low pressure mercury UV lamp emits
light. Transmittance decreases in the presence of UV absorbing substances and particles that either
absorb or scatter UV light. This results in a reduction of available UV energy for disinfection and
oxidation. The UV transmittance is the most important water quality parameter used in the sizing of a
UV system. A UV system designer may compensate for low transmittance by increasing the residence
time or the amount of equipment.
2.2.2 Hydroxyl Radical Scavenging Demand
While the desired reaction in UV oxidation systems is between photogenerated hydroxyl radicals and
contaminant molecules the unselective nature of hydroxyl radical reactions result in reaction pathways that
consume hydroxyl radicals by reaction with constituents of the background water matrix. Examples of these
hydroxyl radical scavenging reactions are the oxidation reactions with the natural organic matter (NOM)
present in natural waters or reactions with carbonate and/or bicarbonate ions. Hydrogen peroxide itself will
react with hydroxyl radicals and, therefore, is considered a hydroxyl radical scavenger. All of these
scavenging reactions have the effect of reducing the steady state concentration of hydroxyl radicals in the
water. Since the rate of contaminant degradation is proportional to the steady state concentration of hydroxyl
radicals, these hydroxyl radical scavenging reactions reduce the rate of contaminant degradation. The level
of scavenging reactions associated with a water sample can be quantified and is referred to as the hydroxyl
radical scavenging demand of the water. Trojan routinely determines the scavenging demand of water
samples at its laboratory in London, Ontario.
2.3 THE ELECTRICAL ENERGY PER ORDER PARAMETER
In sizing UV systems for Environmental Contaminant Treatment, a different metric is used than for
UV systems for disinfection. This metric is called Electrical Energy per Order, or E EO (Bolton et al.
1996).
EEO is the electrical energy (measured line power draw) required to reduce the contaminant
concentration by one order of magnitude (one log, or 90%) in one cubic meter (m3) or 1000 gallons
(kgal) of water (depending on the choice of flow units). Typical units are:
•orderkgal
kWh or
•orderm
kWh
3 .
84
EEO is a reactor, contaminant, and water -quality specific metric and the figure of merit accepted by the
Photochemistry Commission of the International Union of Pure and Applied Chemistry for UV-
photolysis/UV-oxidation technologies. It is a measure of the efficiency with which a given
contaminant is treated by UV-photolysis and UV-oxidation. Different contaminants will have
different E EO values in the same UV reactor in water with the same water qu ality. Different reactors
will have different EEO values as the term measures a UV reactor’s hydraulic, optical and electrical
efficiency (when comparing two reactors treating the same contaminant under the same conditions).
EEO is directly proportional to the required power draw: the lower the EEO, the lower the power
required by the system. The following formula can be used to compute the EEO of a UV treatment
system in units of kWh/kgal/order with flow in gallons per minute (gpm) and power draw in kilo watts
(kW):
× ×
=
•
C
Cgpmflowrate
kWdraw powerreactormeasured
orderkgal
kWhE
o
EO
log 06 . 0 ) (
) (
Where
• 0.06 is a conversion factor that converts minutes to hours and
normalizes the flow rate on a 1000-gallon basis
• C o is the concentration of contaminant at the influent of the reactor
• C f is the concentration of contaminant at the effluent of the reactor
In general, the energy required to reduce the contaminant initially by 90% is the same as the energy
required to treat 90% of the remaining contaminant, for a total of 99% reduction (log-linear kinetics).
In other words, the same energy is needed to reduce 100 units of contaminant to 10 units of
contaminant as is needed to reduce 10 units of contaminant to 1 unit of contaminant.
A related term to EEO is the electrical energy dose (EED) which is determined by dividing the system
power draw (kW) by the flow rate. Typical units of EED are kWh/kgal or kWh/m3.
2.3.1 Parameters affecting EEO
• Reactor design. Different reactors (even those using the same type of lamp) can have
significantly different E EO values for a given water and contaminant. This is due to reactor
characteristics such as lamp spacing, lamp orientation, and location of influent/effluent ports.
Therefore, E EO is a reactor-specific measure. The implications of this are that project
specifications cannot specify design E EO values as they will differ from UV system to UV
system.
• Reactor Lamp Type. Properties of the lamp such as UVC power conversion efficiency and
emittance spectrum can have a significant impact on EEO.
• Water quality. Water quality parameters that impact E EO are:
– UV transmittance (UVT): EEO increases as UVT decreases. That is, as the water
becomes less transmissive to UV light, more power is required to achieve a desired
log reduction in the contaminant concentration.
– Hydroxyl radical scavenging demand: EEO increases as the hydroxyl radical
scavenging demand of the water increases. That is, with greater competition for
85
hydroxyl radicals due to the water matrix, fewer radicals are available to react with the
contaminant.
These water quality parameters impact various reactors and lamp types differently.
• Lamp age. EEO increases as lamps age. That is, more power is required at the end of the lamp
life than at the beginning in order to achieve the same effectiveness. This is because the
lamp’s UVC electrical efficiency decreases over time.
• Flow rate. In general, because EEO is normalized by the flow rate, reactor systems treating
different flow rates can be compared. However, such comparisons should be made cautiously
as empirical evidence and theoretical analysis have shown that the EEO value decreases to an
asymptotic value as flow rate increases. This is due to increases in reactor hydraulic
efficiency with increases in turbulence and mixing at higher flow rates. Reactors must be
specifically designed for certain conditions, including flow rates.
• Hydrogen Peroxide Concentration. EEO is a strong function of H 2O 2 concentration. The
irradiation of H 2 O 2 produces hydroxyl radicals which accelerate the degradation of
contaminants in the water. The higher the H 2 O 2 concentration the more UV it absorbs and the
more radicals are formed. However, H2 O 2 itself scavenges hydroxyl radicals. Therefore, the
greater the concentration of H 2O 2 , the greater the scavenging of hydroxyl radicals. Therefore,
EEO varies inversely with H 2O 2 concentration but this is not a linear relationship.
• Contaminant. Different contaminants will have a different EEO value in the same reactor in
water with the same quality. This is due to differences in the quantum yield, molar absorption
coefficient, and hydroxyl radical reaction rate (i.e., their fundamental kinetic parameters).
3 PILOT SYSTEM DESIGN
3.1 APPROACH TO THE UV-AOP STUDY
While it was the objective of this study to demonstrate the capability of the UV/H 2 O 2 system to treat
1,4-dioxane present in the St. Anthony groundwater, it was decided to inject additional 1,4-dioxane
upstream of the UV reactor. This was done to allow the UV/H 2O 2 pilot system to demonstrate
treatment of 1,4-dioxane that exceeds 3 -log (i.e., >99.9%) reduction.
The primary water quality parameters that influence the efficiency of UV/H 2O 2 treatment are the UV
transmittance (UVT) of the water and its hydroxyl radical scavenging demand. The UVT of the water
affects the efficiency of delivering the UV photons to the target chemical (i.e., H2O 2 ). Similarly, the
hydroxyl radical scavenging capacity quantifies the overall demand for hydroxyl radicals due to all
constituents present in the water.
Trojan received a water sample from St. Anthony in July 2015. The sample was collected upstream of
the GAC filters and is representative of the water that would supply the pilot system. This sample was
evaluated for the water quality parameters that potentially impact the efficiency of UV/H 2O 2
treatment. Figure 1 presents a summary of the data for the St. Anthony water sample. The key
conclusions from the water quality analysis are that the UVT is very high at 96.3% and the hydroxyl
radical scavenging capacity is moderately high. The moderately high hydroxyl radical scavenging
capacity is due to the relatively high alkalinity and resulting bicarbonate ion concentration. T hese
results are consistent with the measurement of pH, alkalinity and DOC and together provide a strong
86
indication that UV oxidation should be efficient in this water. The UV absorbance spectrum which is
plotted between 200 nm and 300 nm is consistent with the other measu red water quality parameters.
Figure 1: Summary of Filtered St. Anthony Water Quality
3.2 UV-AOP PILOT SYSTEM DESIGN
This document focusses on the UV/H 2O 2 AOP treatment system design, test procedures and results .
The main comp onents of the pilot system comprise the feed supply, chemical injection and mixing,
flow measurement, the UV reactor with influent and effluent sample ports as well as the GAC
contactor. The UV reactor was a TrojanUVPhox™ A02 system comprising 2 low-pressure high
output amalgam lamps that each draws approximately 100 W of electrical power. The total power
draw is about 200 W.
A photograph of the pilot set-up is shown in Figure 2. Trojan’s UV/H 2O 2 pilot system was
conveniently shipped in a small crate with pre-assembled UV reactor inlet and outlet piping and
components together with two chemical injection pumps and electrical supply components. The pilot
system is supplied with filtered St. Anthony water. Two chemical injection systems were provided.
One was a hydrogen peroxide injection pump, tubing and nozzle to deliver the required H 2O 2 dose to
the reactor feed water. A second injection system metered the 1,4-dioxane solution. The H 2O 2 stock
was injected into the reactor influent stream just upstream of a static mixer. An influent sample port
was located downstream of a rotameter which provided accurate flow measurement. The pipe
transitions from 1” to 3” diameter to match the UV reactor influent flange. The UV reactor itself is 6”
diameter with 3” influent and effluent flanges. The effluent pipe leaving the reactor is immediately
16-Oct-15
Project Name/Site
Sample
Description Sample Date
Saint Anthony Village, MN
e 3&5 te Sa d
Before GAC 07/09/15 Parameter Units Result
pH 7.8
Treatment Objectives 1.50 log 1,4-D alkalinity mg/L as CaCO3 276.2
Sizing 3x2-D72AL75s reactor(s)UVT254nm % transmission 96.3
10.0 ppm H2O2 DOC ppm 1.2
Hydroxyl Radical Scavenging Nitrate ppm as NO3-0.3
Low Scavenging
Environmental Contaminant Treatment
Sample Report- CONFIDENTIAL
Analytical Results
0.000
0.050
0.100
0.150
0.200
0.250
0.300
200 210 220 230 240 250 260 270 280 290 300
Ab
s
o
r
b
a
n
c
e
(
c
m
-1)
Wavelength (nm)
UV Absorbance Spectrum
87
reduced to 1” diameter and exits vertically before turning and continuing on to the GAC vessel. The
effluent sample port is located between the UV reactor and the GAC contactor.
Figure 2: Photo of UV/H 2 O 2 Pilot System
The system performance was determined by collecting pairs of water samples from the UV reactor
influent and effluent sample ports and analysing contaminant concentrations in these samples. In order to
quantitatively determine the system performance it is necessary to have effluent contaminant
concentrations that are above the analytical reporting limit. Therefore, many of the proposed test
conditions were expected to produce water with measurable contaminant concentrations.
Troja n recommended quenching residual hydrogen peroxide and adsorbing residual contaminants
leaving the UV reactor with a granular activated carbon (GAC) contactor. The size of the contactor is
typically defined by the empty-bed-contact-time (EBCT) and a minimum of 2 to 4 minutes is
recommended for quenching most of the H2 O2 . The City of St. Anthony supplied GAC contactor
comprising a 55 gallon drum, shown in Figure 2. The proposed test matrix described below indicates a
flow range between 0.5 and 2 gpm and therefore the EBCTs provided range from about 20 minutes to
about 80 minutes. This should be more than enough to reduce residual H 2O2 leaving the UV reactor to
non-detect.
88
It was importa nt to ensure that the samples were collected when the system was operating at steady state
and that the injected chemicals (i.e., 1,4-dioxane & H2O2 ) were completely mixed. There are two
alternatives to ensure that the system is operating under steady state conditions prior to sample
collection. The simplest is to wait for at least five hydraulic retention times (HRTs) after a process
change before collecting samples. One HRT is defined as the time required for one system volume to
pass through the system assuming plug flow conditions. In this case, the system volume is defined as the
total water volume between the injection ports and the effluent sample port. Thus, the HRT is calculated
by dividing that volume by the flow rate. A conservative approach to allow for deviations from plug flow
is to allow five HRTs to pass before assuming that the system is at steady state.
4 UV-AOP SYSTEM TEST PROCEDURES
4.1 UV-AOP MIXING TEST PROCEDURE
The mixing test was performed with hydrogen peroxide as the tracer chemical. The hydraulic
residence time distribution within the system, from the H 2 O 2/1,4-dioxane injection ports to the final
effluent sample port, was assessed, which allowed the equilibration time to be calculated and used for
subsequent tests. This tracer study involved initiating the injection of a known concentration of tracer
compound (e.g., 6 ppm H2 O2 ) into the influent stream at time zero with the UV lamps off and
collecting a series of samples at the influent and effluent sample ports. It was recommended that
samples be collected as frequently as necessary to adequately define the tracer curve (i.e.,
concentration vs. time curve). By monitoring the H 2 O 2 level in the effluent samples, the time required
for the system (between injection and effluent ports) to reach steady state was determined. The time
required to reach steady state determined from this test was used to determine run times for the
subsequent performance tests.
4.2 UV-AOP PERFORMANCE TEST PROCEDURE
The UV -oxidation system operating parameters to be investigated durin g this study included flow and
hydrogen peroxide dose. The flow range for the pilot tests was between 0.5 and 2.0 gpm (0.5, 1.0 &
2.0 gpm). Hydrogen peroxide was dosed into the influent stream at concentrations between 0 and 20
ppm (i.e., 0, 5, 10, & 20 ppm). That provided a test matrix of 3 x 4 totaling 12 unique test runs. In
addition, a run with the UV power off provided a control condition that allowed the sample collection,
handling and analytical procedures to be validated. Other test conditions with 0 ppm H 2O 2 and
especially with no UV did not need to be performed with all of these conditions. The recommended
test matrix is provided in Table 1. For each run influent and effluent sample pairs were collected and
analyzed for 1,4 -dioxane and H 2 O 2.
89
Table 1: Test Matrix
Test
No. Flow [H 2 O 2 ] UV
Lamps
(gpm) (mg/L) (on/off)
1 0.5 0 off
2 0.5 0 on
3 0.5 5 on
4 0.5 10 on
5 0.5 20 on
6 1.0 5 on
7 1.0 10 on
8 1.0 20 on
9 2.0 5 on
10 2.0 10 on
11 2.0 20 on
Run number 1 was a control run intended to demonstrate that negligible contaminant reduction occur s
in the absence of UV and H 2O 2 . This test was also intended to validate the integrity of the
contaminant and H 2O 2 stock injection, sample collection, handling and analytical procedures. Run 2
was with no H 2O 2 and will demonstrate the level of 1,4-dioxane treatment by direct UV photolysis,
which was expected to be negligible. The remaining 9 test runs cover 3 H 2 O 2 concentrations and 3
flow rates.
Quantitative analysis of the UV AOP system performance is typically based upon measurement of the
contaminant log reduction and the system’s electrical energy per order (E EO) parameter. These
parameters require measurable levels of contaminants in both the reactor influent and effluent streams.
Therefore, the influent concentration of contaminant must be sufficiently high that the effluent will be
comfortably above the analytical detection limit. The influent concentration of contaminants can be
adjusted based on the analytical detection limits and the expected log reduction provided by the
system. Trojan predicted that up to ~3.5-log reduction of 1,4-dioxane will be provided in Test No. 5.
Given an analytical method detectio n limit for 1,4-dioxane of 0.07 µg/L Trojan planned for a
maximum influent 1,4-dioxane concentration of about 200 µg/L.
Trojan recommended that a small GAC contactor be installed to both quench residual H 2O 2 leaving
the UV reactor and to adsorb the low µg/L levels of 1,4-dioxane that are expected in the UV reactor
effluent. St. Anthony provided a 55 gallon Disposorb™ drum of GAC for this purpose that contained
165 pounds of GAC. The empty-bed-contact -time (EBCT) required for quenching residual H 2 O 2 is
approximately 4 minutes or less which would only require about 8 gallons of GAC bed. Therefore,
assuming an apparent density of 0.5 g/cc the GAC bed totals 40 gallons and the associated EBCT at 2
gpm would be 20 minutes which is more than adequate for both peroxide quenching and organic
adsorption.
4.3 SAMPLE HANDLING AND ANALYSIS
The above test matrix presented in Table 1 resulted in the collection of 22 water samples (11 influent
& 11 effluent) for analysis of 1,4-dioxane and H 2 O 2. All the samples to be analysed for 1,4-dioxane
were sent to Pace Analytical Services, Inc. in Minneapolis at the completion of the tests on August 27th
where they were analysed by EPA method 522 which has an analytical reporting limit of 0.07 µg/L.
90
Trojan measured the concentration of H 2 O2 using the N,N-diethyl-p-phenylenediamine
(DPD)/Peroxidase method based on that described by Bader & Hoigne (Wat. Res., Vol. 22, No. 9, pp.
1109-1115). A Hach DR890 colorimeter was used for this method.
Prior to collecting samples, the sample ports were flushed to waste to ensure that the collected sample
was representative of what was in the adjacent pipe at the time of sampling. The ports were flushed
and samples collected at approximately 200 ml/min to minimize the disruption of flow through the UV
system. Further, the sampling procedure comprised collecting the influent sample first followed
immediately by the effluent sample once the system was at steady state.
5 RESULTS AND DISCUSSION
The results of the tracer test are summarized in Figure 3. This test was performed at 0.5 gpm and
H2 O 2 injection was initiated at time zero. Influent and effluent samples were subsequently collected
every 5 or 10 minutes and analysed for H2O 2 concentration. As Figure 3 demonstrates, the influent
H2 O 2 concentration climbed rapidly and plateaued between about 6.5 to 7.0 mg/L by slightly more
than 5 minutes after turning the pump on. The effluent H2 O 2 concent ration did not reach the same
level until after 15 minutes and the two sample ports did not reach the same concentrations (i.e., steady
state) until about 30 minutes after beginning the test. To be conservative, it was decided to wait for 40
minutes after adjusting the operating conditions before collecting samples for runs performed at 0.5
gpm. The corresponding times to reach steady state for the 1 gpm an d 2 gpm tests were 20 minutes
and 10 minutes respectively.
91
Figure 3: Tracer Test Results Operated at 0.5 gpm
The results of all 11 tests are summarized in Table 2 below. The tests were performed in the order
listed.
Table 1: Data Summary
Figure 4 presents a comparison of the target H2 O 2 dose and the measured H 2O 2 concentration at the
UV influent port. It is observed that the measured H 2O 2 concentration matches the target value
reasonably well. On average, the measured H2 O 2 dose was 109% of the target value.
Test
No.Flow
Target
[H2O2]
UV
Lamps
1,4-D Log
Reduction
EEO,
kWh/kgal/
order
Influent Effluent Influent Effluent
(gpm) (mg/L)(on/off)(mg/L) (mg/L)
1 0.5 0 off 0.0 191 187 0.01
2 0.5 0 on 0.0 190 159 0.08 86.18
3 0.5 5 on 5.7 1.7 193 2.1 1.96 3.40
4 0.5 10 on 9.9 189 0.082 3.36 1.98
5 0.5 20 on 21.1 6.1 197 0.07 3.45 1.93
6 1.0 5 on 5.5 3.0 172 11.7 1.17 2.86
7 1.0 10 on 10.5 6.0 186 2.3 1.91 1.75
8 1.0 20 on 19.6 192 0.44 2.64 1.26
9 2.0 5 on 6.8 5.4 170 39.6 0.63 2.63
10 2.0 10 on 11.0 8.5 169 17.9 0.98 1.71
11 2.0 20 on 20.1 15.7 170 7 1.39 1.20
1,4-D [H2O2]
92
Figure 4: Co mparison of Target and Measured H 2 O 2 Dose
Figure 5 plots the measured influent and effluent 1,4 -dioxane concentrations. 1,4 -dioxane was injected
at a rate that should provide a relatively constant concentration for all 11 runs. The average influent
1,4-dioxane concentration was 183.5 μg/L and vari ed from 169 to 197 μg/L. Effluent concentrations
varied widely, as expected based on the varied operating conditions of the tests , and ranged from 187
μg/L for Run 1 to below the analytical method detection limit of 0.07 μg/L for Run 5.
93
Figure 5: 1,4-Dioxane UV Reactor Influent and Effluent Concentrations
Run 1 was a control test that was not expected to provide any treatment of 1,4-dioxane. This was
conducted to demonstrate that the system operation and sample collection, handling and analytical
procedures did not produce anomalous results. As Table 2 and Figure 5 show, the influent and effluent
1,4-dioxane concentrations for run 1 were almost identical. Run 2 was performed to demonstrate that
significant 1,4-dioxane destruction does not occur in the absence of H 2 O 2. The results demonstrate
that only 0.08 -log destruction of 1,4-dioxane occurred and it is possible that a trace of H2 O 2 may have
been present even though the H 2 O 2 pump was off. For all the other test runs in which both UV energy
and H 2O 2 were present the 1,4 -dioxane reductions were substantial.
Figure 6 presents the log reduction of 1,4-dioxane that was measured for each of the 11 test runs. Log
reduction is calculated by taking the logarithm of the influent 1,4-dioxane concentration divided by the
effluent 1,4-dioxane concentration (i.e., Log(C inf/C eff )). As discussed, the log reduction for runs 1 and
2 were negligible. Referring to the test matrix presented in Table 2, runs 3, 4 and 5 were all performed
at 0.5 gpm with run 3 at 5 ppm H2 O 2, run 4 at 10 ppm H2 O 2 and run 5 at 20 ppm H2 O 2. It is observed
in Figure 6 that the log reduction increases as the H2 O 2 dose increases. Nevertheless, the increase
from run 4 at 10 ppm H2 O 2 to run 5 at 20 ppm H 2O 2 appears to be quite low. It is important to note
that, as reported in Table 2 , the effluent concentration for run 5 was below the analytical detection
limit of 0.07 µg/L. The corresponding log reduction calculation for run 5 used 0.07 µg/L as the
effluent concentration even though the actual concentration was less than 0.07 µg/L . Therefore, the
actual log reduction would be some value greater than the 3.45 -log reported for run 5 and plotted in
94
Figure 6. Similarly, runs 6, 7 and 8 were all performed at 1 gpm with 5, 10 and 20 ppm H 2O 2 doses
respec tively. For these runs we observe that the log reduction values increased from 1.17 -log at 5 ppm
to 1.91-log at 10 ppm and to 2.64-log at 20 ppm H2 O 2. Runs 9, 10 and 11 were performed at 2 gpm
again with 5, 10 and 20 ppm H 2O 2 dose targets. The measured 1,4 -dioxane log reduction values for
these runs increased from 0.63-log to 0.98-log and to 1.39-log with increasing H 2 O 2 dose. These
results show that by increasing H 2O 2 dose from 5 ppm to 10 ppm resulted in an average log reduction
increase of 63% while increasing from 10 ppm H 2O 2 to 20 ppm H2O 2 resulted in an average log
reduction increase of 40% (based on runs 7, 8, 10 & 11). This is the expected result in that there is a
diminishing benefit to contaminant log reduction due to H2O 2 dose increases. This is because although
increasing the H 2 O 2 concentration increases the rate of hydroxyl radical generation it also increases
the rate of hydroxyl radical scavenging by H2 O 2. The results presented in Figure 6 also illustrate that
the meas ured 1,4-dioxane log reduction increases as the flow rate decreases. Analyzing the data
presented in Figure 6 and Table 2 indicates that reducing the flow rate by 50% results in an average
log reduction increase of 83%. This is also consistent with expectations because it is known that UV
reactor efficiency can decrease at low flow rates due to poor hydraulic flow patterns (i.e., poor mixing)
in the reactor leading to broad UV dose distributions.
Figure 6: Summary of 1,4-Dioxane Log Reduction Data
Anot her method of describing the treatment performance is to examine the electrical energy per order
(EEO) parameter for 1,4-dioxane, as described previously. The EEO is calculated by dividing the UV
electrical power by the flow rate and by the 1,4-dioxane log reduction. Therefore, lower EEO values
95
represent more efficient treatment. The EEO is presented for all 11 runs in Table 2 and plotted in
Figure 7 as a function of the measured influent H2 O 2 concentrations. The first conclusion from
examining Figure 7 is that the EEO decreases as H2O 2 dose increases. Also, although the system flow
rate does not have a significant impact on the E EO it does appear that the lowest flow of 0.5 gpm did
result in slightly higher values. This is consistent with our expectations of the reactor hydraulic
efficiency as a function of flow rate. It is also apparent that the correlation between EEO and H 2O 2
dos e is non-linear. This is also consistent with the expected diminishing benefit of increasing the H 2 O 2
dose, as explained above.
Figure 7: 1,4-Dioxane Electrical Energy per Order as a Function of H 2 O 2 Dose and Flow
The same data is examined in Figure 8 which plots the measured log reduction of 1,4-dioxane as a
function of the electrical energy dose (EED). The EED term was introduced in Section 2 and is
determined by dividing the UV system power by the flow rate. This is a measure of the UV energy
provided per unit volume of water treated. As Figure 8 demonstrates, the log reduction of 1,4-dioxane
is proportional to both the EED and the H 2 O 2 dose. Note that the effluent 1,4-dioxane concentration
was below the MDL for the highest EED and highest H 2O 2 dose.
96
Figure 8: 1,4-Dioxane Log Reduction (LR) as a Function of Electrical Energy Dose (EED)
97
6 FULL -SCALE SYSTEM SIZING
This section is intended to describe the basis of sizing the UV/H 2O 2 AOP System for Saint Anthony
proposed by Trojan Technologies.
Trojan’s general approach to UV oxidation system sizing relies upon the combination of
understanding the fundamental photochemistry of the UV oxidation process together with a thorough
understanding of the hydraulic and optical performance of Trojan reactors, as well as extensive full -
scale experience to provide, with confidence, performance warranties for all Trojan UV oxidation
systems.
Specifically, the sizing method that Trojan typically employs is comprised of the following steps:
1) Through a combination of bench-scale experimentation and literature review determine the
fundamental photochemical kinetic parameters for the specific contaminants that govern the rate
of contaminant destruction by the UV photolysis and UV/H 2 O 2 process. These fundamental
kinetic parameters include the quantum yield and molar absorption coefficient as a function of the
irradiation wavelength which together determine the rate of direct photolysis of the contaminant in
response to a delivered UV dose. They also include the second order rate constant for the reaction
between the contaminant and the hydroxyl radical. The water constituents could undergo
photochemical reactions generating reactive species such as triplet states and radicals which could
affect the contaminant photochemistry/chemistry in that specific water. These parameters and the
role of water constituents on various contaminant structures, including pesticides, algal toxins,
taste-and-odor causing compounds, pharmaceuticals and so on are determined by performing
properly designed collimated beam experiments.
2) Determine the UV transmittance (%T, also abbreviated as UVT) across the radiation wavelength
relevant to the UV application and the hydroxyl radical scavenging capacity of representative
water samples. The water UVT is measured over the wavelength range from 200 to 400 nm using
a calibrated spectrophotometer. The scavenging capacity of the water is determined from a
properly designed collimated beam methodology.
3) Input these parameters together with the system design parameters (flow and treatment goal) into
Trojan’s proprietary mathematical model of the UV photolysis and UV/H 2O 2 process for the
TrojanUVPhox™ reactor.
4) Trojan’s proprietary model comprises the following system characteristics:
a) It incorporates the photochemical kinetics for direct UV photolysis and hydroxyl radical based
UV-oxidation by modeling the contaminant destruction kinetics for the given water quality
defined by the UVT and the hydroxyl radical scavenging demand.
b) It utilizes computational fluid dynamics (CFD) and UV intensity models to characterize the
product of the hydraulic behavior and the UV intensity gradients within Trojan’s various
reactors. This task requires a detailed knowledge of the internal dimensions and structures of
each possible reactor model together with the lamp spectral power distribution and efficiency,
quartz sleeve UV light transmitting characteristics, and their specific geometric positioning
inside the UV reactor relative to the flow patterns.
c) Specific reactor characteristics used in the modeling have been calibrated and subsequently re-
validated using numerous sets of full-scale, real world results. The TrojanUVPhox design
incorporates the knowledge base accumulated from Trojan’s extensive experience.
5) The model output provides the optimum combination of UV power and H2 O 2 concentration
resulting in a minimum NPV for the system.
6) Trojan has extensive full-scale experience in applying both the UV direct photolysis and
UV/H 2 O 2 process in various water treatment applications. These full-scale installations comprise
projects treating contaminants including pesticides, industrial solvents, cyanides, taste-and-odor
98
causing compounds, algal toxins, pharmaceuticals and personal care products, endocrine
disrupting compounds, NDMA and 1,4-Dioxane. Numerous systems, including Tucson’s 5,800
gpm airport remediation project utilizing the TrojanUVPhox D72AL75 installation, the 100 MGD
Groundwater Replenishment System in Orange County California and the 50 MGD UV oxidation
system in Aurora, Colorado are designed for low-pressure UV oxidation of various contaminants .
6.1 DESIGN CRITERIA
The full-scale design criteria together with measured water quality are summarized in Table 3.
Table 3: City of St. Anthony Water Village Treatment System Design Specifications
UV SYSTEM DESIGN SPECIFICATIONS
Design Flow 3000 gpm
Average Flow 1250 gpm
Target 1,4-dioxane Log Reduction 2.0-Log
Measured UV Transmittance 96%
The model output for the projected water quality at the peak flow conditions (i.e., 3000 gpm at 96%
UVT) provides an electrical energy per order (EEO ) value of 0.41 kWh/kgal/order for 1,4-dioxane
when 18 ppm of H 2O 2 is present. This value is associated with the UV output at the end-of-lamp-life
(EOLL) condition as well as an appropriate level of conservatism. Trojan has proposed to reduce 1,4-
dioxane by 2.0-log (i.e., 99.0%) in this stream with 2 parallel trains of 2 TrojanUVPhox™ D72AL75
reactors plus one redundant train. This system is described in a separate proposal.
While Trojan’s preferred approach to sizing UV-AOP systems is to rely upon our proven mechanistic
sizing model, as described above, there are several aspects of the empirical scale-up approach that
should be discussed. Full-scale UV reactors typically have superior treatment efficiency compared
with pilot-scale reactors for the following reasons.
In UV-based AOP systems, most UV photons that are transmitted through the water and reach the wall
of the reactor are absorbed by the wall material and do not contribute to the contaminant treatment
process. This loss of photons at the reactor wall and other surfaces within the UV reactor represents an
inefficiency of the reactor. Conversely, if a large fraction of photons that are emitted by the lamps are
absorbed by constituents in the water, a desired result, then the reactor is said to have high absorption
efficiency. This reactor absorption efficiency can be increased by providing a longer pathlength for the
photons to travel before they reach a surface. Similarly, reactors typically have higher efficiencies
when operated at higher flow rates. This is a result of better hydraulic performance (i.e., mixing) that
better approaches the ideal plug flow behaviour. The result of these phenomena is that the relatively
small pilot reactors operated at relatively low flows generally have a lower efficiency (i.e., higher E EO)
than larger full-scale reactors. It is therefore, not recommended to assume that a full-scale system will
have the same EEO as a pilot-scale system when operated with the same water quality and H 2 O 2 dose.
99
Figure 9: Comparison of Pilot Data and Model Prediction with Full-Scale Prediction
Figure 9 presents the pilot E EO data for 1,4-dioxane from Figure 7 together with the full-scale
model of the E EO for 1,4-dioxane in 2 parallel trains of 2- D72AL75 TrojanUVPhox reactors
treating 3000 gpm of filtered water by 2-log reduction of 1,4-dioxane. The full-scale design at
those peak conditions has an associated E EO of 0.41 kWh/kgal/order at about 18 mg/L of
H2 O2 as shown in Figure 9. Also shown in Figure 9 is the model result for the pilot-scale
system at the 2 gpm operating condition. The improved efficiency of the full-scale system
relative to that of the pilot system was explained earlier. This full-scale prediction also
accounts for the lamps operating at their end-of-life condition with an allowance for sleeve
fouling and a safety factor.
100
7 CONCLUSIONS
The data generated from operating a TrojanUVPhox™ A02 pilot-scale UV reactor together with H2O2
injection at the Saint Anthony Water Treatment Plant has demonstrated that the UV/H2O2 AOP is
effective at treating 1,4-dioxane in the filtered Saint Anthony groundwater. Specifically,
• A water sample demonstrated high UV transmittance (>96.3%) making it a very good candidate
for UV/H2O2 AOP treatment despite a moderately high hydroxyl radical scavenging demand.
• Greater than 3.4-log (>99.96%) destruction of 1,4-dioxane was demonstrated by the pilot
system.
• 1,4-dioxane log reductions were shown to be proportional to both the H2O2 levels dosed and
UV energy delivered (i.e., EED). Therefore, the same log reduction target could be achieved by
increasing H2O2 and reducing power or vice versa. This supports the conclusion that the
process is operationally flexible and able to be optimized to minimize the overall cost of
treatment.
• The EEO values for 1,4-dioxane were shown to vary inversely with the H2O2 level dosed. That
is, the EEO decreases with increasing H2O2 and vice versa.
• Destruction of 1,4-dioxane was achieved using UV/H2O 2 with relatively low EEO values (~1.2 -
3.4 kWh/kgal/order) depending primarily upon the H2O2 dose selected. Full-scale EEOs are
expected to be lower since larger reactors are more efficient than pilot -scale equipment.
• Trojan’s model of the UV/H2O2 process was demonstrated to match the pilot data very well.
This same model was adjusted for the full-scale system parameters and provided the basis for
the full-scale system recommendation.
• The proposed full-scale UV/H2O2 system comprises three parallel trains of 2-D72AL75
TrojanUVPhox reactors (2 duty trains, 1 redundant train) each with 18 ppm H2O2. This system
will treat 3000 gpm of 96%T water by 2-log (i.e., 99%) reduction of 1,4-dioxane.
• The process was demonstrated to be relatively simple to operate. Full-scale system controls
simplify those operations further.
101
APPENDIX C
Evaluation of Hydrogen Peroxide with Ozone and Bioremediation for Treatment of Dioxane
102
Appendix C –
Evaluation of Hydrogen Peroxide with Ozone and Bioremediation for Treatment of
Dioxane
Ozone/Hydrogen Peroxide
Ozone with hydrogen peroxide was not piloted or further evaluated for treating Dioxane at the
City's existing water treatment plant for the following reasons:
1. Typically used for high turbidity waters (surface waters) where the Ultraviolet
Transmittance Value (UVT) is too low for UV light to effectively pass through the
water and be absorbed by the hydrogen peroxide. Because the City's water contains
low turbidity, iron, and manganese downstream of the existing greensand filters, the
water produces a very high UVT which is much better suited for UV light with
hydrogen peroxide.
2. This process can form assimilable organic carbon (AOC) byproducts that may require
an additional treatment process to remove them.
3. Generally requires a larger building footprint.
4. Typically higher O&M costs compared to UV/hydrogen peroxide.
Bioremediation
Ex situ bioremediation of groundwater involves putting contaminants in the extracted
groundwater in contact with microorganisms in attached or suspended growth biological
reactors. Ex situ bioremediation was selected to treat Dioxane in groundwater at the Lowry
Landfill Superfund site near Denver, Colorado. Between 1960 and 1980, the site was used for
co-disposal of industrial and municipal solid wastes. Industrial waste liquids that contained spent
solvents including Dioxane were placed in unlined pits and subsequently contaminated shallow
groundwater (Source – EPA Treatment Technologies for 1,4-Dioxane: Fundamentals and Field
Applications).
Ex situ bioremediation was not further evaluated for St. Anthony Village as the treatment process
was determined to be very difficult to pilot and too costly to implement if it was determined to be
an effective treatment technology. In addition, it is possible that the Minnesota Pollution Control
Agency (MPCA) and the MDH would not approve this method. There are no known public
water systems that utilize bioremediation for treatment of Dioxane.
103
APPENDIX D
Cost Estimates
104
Option 2 Detailed Costs
ITEM NO. UNIT UNIT COST COST
Drill Mount - Simon Hinckley Well 4 Each 350,000$ 1,400,000$
Groundwater Study 1 Lump Sum 75,000$ 75,000$
Misc. DNR Requirements for Approval 1 Lump Sum 50,000$ 50,000$
Pump Houses 4 Each 850,000$ 3,400,000$
HVAC System Upgrade 1 Lump Sum 25,000$ 25,000$
TOTAL:4,950,000$
INDIRECT (25%):1,237,500$
SUBTOTAL:6,187,500$
CONTINGENCY (15%):928,125$
GRAND TOTAL:7,115,625$
ITEM NO. UNIT UNIT COST COST
Hazardous Waste Disposal - Media 1 Lump Sum 50,000$ 50,000$
Media Replacement 1 Lump Sum 1,728$ 1,728$
Additional Well Pump Maintenance 1 Lump Sum 10,000$ 10,000$
Additional Power Usage (Depth)456,375 KWHr 0.0823$ 37,560$
TOTAL ANNUAL:99,288$
PER 20 YEARS: 1,985,753.25$
PER 20 YEARS WITH 3.5% INFLATION RATE: 2,812,253.54$
OPTION 2: MOUNT-SIMON HINCKLEY WELLS
ESTIMATED CAPITAL COST
ESTIMATED ANNUAL O&M COST
105
Option 3 Detailed Costs
ITEM NO. UNIT UNIT COST COST
20-inch Water Main 15,750 Lin Ft 260$ 4,095,000.00$
Land Acquisition 2 Each 350,000$ 700,000.00$
Booster Pump Station 2 Lump Sum 900,000$ 1,800,000.00$
TOTAL:6,595,000.00$
INDIRECT (25%):1,648,750.00$
SUBTOTAL:8,243,750.00$
CONTINGENCY (15%):1,236,562.50$
GRAND TOTAL:9,480,312.50$
ITEM NO. UNIT UNIT COST COST
Proposed Pumping Costs 1 Per Year 32,434$ 32,434.00$
Demand Charges 1 Per Year 15,036$ 15,036.00$
Replacement Pumps - 2500 gpm 2 Per Year 8,000$ 16,000.00$
Replacement Pumps - 3500 gpm 1 Per Year 5,000$ 5,000.00$
Heat 1 Per Year 4,235$ 4,235.00$
VFD Replacement - 100 HP 2 Per Year 1,910$ 3,820.00$
VFD Replacement - 150 HP 1 Per Year 2,320$ 2,320.00$
SCADA Integrator 1 Per Year 20,000$ 20,000.00$
Building Maintenance 1 Per Year 5,000$ 5,000.00$
Watermain Replacement 1 Per Year 54,600$ 54,600.00$
TOTAL ANNUAL:158,445.00$
PER 20 YEARS: 3,168,900.00$
PER 20 YEARS WITH 3.5% INFLATION RATE: 4,487,843.71$
Individual Water Softening 1 Per Month 6.75$ 6.75$
OPTION 3: PURCHASE WATER FROM MINNEAPOLIS WATER
ESTIMATED CAPITAL COST
ESTIMATED ANNUAL O&M COSTS
106
Option 5 Detailed Costs
ITEM NO. UNIT UNIT COST COST
General Conditions 1 Lump Sum 651,279$ 651,279$
General Site Work 1 Lump Sum 94,750$ 94,750$
Building and Treatment 1 Lump Sum 4,247,110$ 4,247,110$
TOTAL:4,993,139$
INDIRECT (25%):1,248,285$
SUBTOTAL:6,241,424$
CONTINGENCY (15%):936,214$
GRAND TOTAL:7,177,637$
ITEM NO. UNIT UNIT COST COST
Electrical Costs for Trojan Units 1 Lump Sum 9,884$ 9,884$
Heating Cost 1 Lump Sum 1,750$ 1,750$
Hydrogen Peroxide 1 Lump Sum 25,302$ 25,302$
Additional Power Usage 1 Lump Sum 1,200$ 1,200$
TOTAL ANNUAL:38,136$
PER 20 YEARS: 762,720.00$
PER 20 YEARS WITH 3.5% INFLATION RATE: 1,080,175.50$
OPTION 5: IMPLEMENT A WATER TREATMENT SYSTEM
ESTIMATED CAPITAL COST
ESTIMATED ANNUAL O&M COST
107
Option 5 Detailed Costs Continued
#ITEM UNIT NO.UNIT COST COST
1 GENERAL CONDITIONS
1.1 General Conditions, building permits, bonds, insurance, mobilization, contractor 1 1 651,279$ 651,279$
project management, construction superintendent, and contractor profit
General Conditions Total Estimated Construction Costs 651,279$
2 GENERAL SITE WORK
2.1 Site preparation and tree removal LS 1 9,000$ 9,000$
2.2 Silt fence LF 150 5$ 750$
2.3 Finish grading and turf restoration LS 1 25,000$ 25,000$
2.4 Site utilities LS 1 50,000$ 50,000$
2.5 Pavement LS 1 10,000$ 10,000$
General Site Work Total Estimated Construction Costs 94,750$
3 BUILDING AND PROCESS EQUIPMENT
3.1 Excavating and backfilling with select granular material CY 1035 20$ 20,700$
3.2 Structural Pilings LF 1080 50$ 54,000$
3.3 Cast-in-Place Concrete (footings and floor slabs)CY 96 600$ 57,600$
3.4 Precast Concrete LS 1 56350.00 56,350$
3.5 Unit Masonry Assemblies LS 1 209300.00 209,300$
3.6 Misc. Metal Work LS 1 46000.00 46,000$
3.7 Rough Carpentry LS 1 6000.00 6,000$
3.8 Building Insulation LS 1 36800.00 36,800$
3.9 Fully Adhered Membrane Roof System LS 1 66700.00 66,700$
3.10 Caulking and Sealants LS 1 29900.00 29,900$
3.11 Door Frames and Hardware LS 1 12000.00 12,000$
3.12 Painting LS 1 24000.00 24,000$
3.13 Process Piping, Fittings, and Valves LS 1 250000.00 250,000$
3.14 Water Quality Analyzers LS 1 15000.00 15,000$
3.15 Trojan Treatment Equipment and Chemical Feed Systems LS 1 2300000.00 2,300,000$
3.16 Chemical Feed System, Piping and Valves LS 1 150000.00 150,000$
3.17 Flow Meters EA 3 10000.00 30,000$
3.18 Overhead Hoist and Beam LS 1 45000.00 45,000$
3.19 Plumbing and HVAC LS 1 104000.00 104,000$
3.20 Electrical General Provisions LS 1 170000.00 170,000$
3.21 Instrumentation and Controls LS 1 250000.00 250,000$
3.22 UV Replacement Lamps EA 296 1,060$ 313,760$
Building and Process Equipment Construction Costs 4,247,110$
OPTION 5: IMPLEMENT A WATER TREATMENT SYSTEM
DETAILED ESTIMATED CAPITAL COST
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CITY OF ST. ANTHONY VILLAGE
RESOLUTION 16-037
A RESOLUTION RECEIVING FEASIBILITY REPORT,
ORDERING PLANS AND SPECIFICATIONS, AND AUTHORIZING THE
ADVERTISEMENT OF BIDS,
FOR THE ADVANCED OXIDATION WATER TREATMENT FACILITY
WHEREAS, a feasibility report was prepared by WSB & Associates, Inc. with reference to the
available options to address the presence of 1,4-Dioxane (Dioxane) in the City’s
source water, and
WHEREAS, the City of St. Anthony Village desires to move forward with Option 5 to
construct an advanced oxidation water treatment facility for the removal of
Dioxane, and
WHEREAS, the report provides information regarding whether the proposed project is
necessary, cost effective, and feasible.
NOW, THEREFORE, BE IT RESOLVED, by the City Council of the City of St. Anthony
Village that:
1) The City receives the recommendation and findings of the St. Anthony Village 1,4
Dioxane Feasibility Study.
2) The City orders the preparation of construction plans and specifications for the
construction of an Advanced Oxidation Water Treatment Facility.
3) The City authorizes the advertisement of bids for the Advanced Oxidation Water
Treatment Facility.
4) The City designates WSB & Associates, Inc. as the engineer for this improvement.
Adopted this 12th day of April , 2016.
_____________________________
Jerome O. Faust, Mayor
ATTEST:____________________________
Nicole Miller, City Clerk
Reviewed for administration: ______________________________
Mark Casey, City Manager
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REQUEST FOR COUNCIL CONSIDERATION
Meeting Date: April 12, 2016
Resolution-Imposing Water Restrictions
OVERVIEW:
In front of you this evening is a resolution to impose water restrictions. The City of St. Anthony is
implementing short term water conservation measures to limit the amount of water that is drawn from
the aquifer due to the discovery of the chemical Dioxane. With the increased demand of water in the
summer months, staff is recommending water restrictions to conserve water and potentially slow down
the movement of Dioxane.
Water restrictions will include:
• No watering between 11:00 am through 6:00 pm
• Odd addresses allowed on odd dates
• Even addresses allowed on even dates
• Closing of both splash pads
The water restrictions will be in effect until further notice. We recommend checking the City’s
website for more information.
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CITY OF ST. ANTHONY VILLAGE
STATE OF MINNESOTA
RESOLUTION 16-038
A RESOLUTION IMPOSING WATER RESTRICTIONS
WHEREAS, beginning April 1, 2016, the City of St. Anthony City is implementing short
term water conservation measures to limit the amount of water that is drawn
from the aquifer due to the discovery of the chemical dioxane; and
WHEREAS, the City of St. Anthony will close the splash pads located at both Central and
Emerald parks until further notice; and
WHEREAS, the City of St. Anthony will implement an odd/even lawn watering ban,
allowing residents with addresses ending in an even number to water their
lawns on even numbered dates, and residents with addresses ending in an odd
number to water their lawns on odd numbered dates; and
WHEREAS, the City of St. Anthony will implement a no watering ban between 11:00 a.m.
and 6:00 p.m.
BE IT RESOLVED THAT the City of St . Anthony hereby imposes said water restrictions
beginning April 1, 2016 until further notice.
Adopted this 12th day April, 2016.
_____________________________
Jerome O. Faust, Mayor
ATTEST:____________________________
Nicole Miller, City Clerk
Reviewed for administration: ______________________________
Mark Casey, City Manager
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PRESENTED
APRIL 12, 2016
Finance Overview
MISSION STATEMENT
Ensure that City resources and assets are managed effectively to
provide residents with the City services desired and to sustain
the City’s infrastructure for current and future residents.
Finance Director
Shelly Rueckert
Human Resources
Coordinator Accountant
Charlie Yunker Ka Vue
License Permit
Specialist Utility Billing Clerk
Office Support
Specialist
Phuongmai Dang Robin Hartfiel Sandy Simon
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Core Accounting Functions
LICENSE & PERMIT SPECIALIST
• 582 Building Permits were pulled in 2015
• Summer hail storm re-roofing permits pushed
the building permit count to an 8 year high
• Residential Valuation: $6,914,335
• Commercial/Industrial Valuation: $441,948
• Special Assessments processing and records
management
• Cash receipting, invoicing and administrative
assistance to Public Works as needed
Core Accounting Functions
UTILITY BILLING CLERK
• Producing 9,473 Utility Bills
• Helping 169 new residents establish
utility accounts
• Tracking the destination of over
281,186,500 gallons of water pumped
by Public Work’s Water Division
• Processing 1,535 Utility Bills for the City
of Birchwood
• Assist’s with front counter, payable
processing and special project as
needed
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Core Accounting Functions
OFFICE SUPPORT SPECIALIST
• 8,158 vendor invoices in 2015
• Generated 3,005 cash disbursements
• The City’s data base includes 1,975 Vendors
• 4M Fund online functions including Debt
Service and Investments transaction
processing
• MWMO bank reconciliation (segregation of
duties)
• Coordinates in-house events
Core Accounting Functions
ACCOUNTANT
• Processing both City and MWMO payroll
• Helps employees with questions regarding
payroll
• Benefits payments and reporting
• Worker’s Compensation renewal and audit
• Assist’s with audit preparation for City, Fire
Relief and MWMO
• MWMO accounting including project cost
tracking
• Assist’s front office staff with accounting
and software questions
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Core Accounting Functions
HUMAN RESOURCES COORDINATOR
• Provides professional and advisory support
to all City departments, and contracted
vendors in the area of human resources,
benefits, payroll, labor relations, and
employee relations support and guidance
• Helped to facilitate the recruitment and on-
boarding of four new, full-time staff persons
• Manages the Health Insurance Committee
and the Safety Committee
Finance Activity Unique to 2015
STAFF ACCOUNTANT POSITION FILLED
• Ka Vue started in February, 2015
• Primary focus is payroll, MWMO accounting services and assisting
the Finance Director with audit preparations. She also performs
many other various duties.
• Ka was instrumental in putting the City’s Affordable Care Act
reporting in place with our payroll vendor, ADP
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Finance Activity Unique to 2015
BUILDING OFFICAL TRANSITION
• Finance staff worked the City of New
Brighton to access the workload and
financial considerations related to
building inspection services
• The resulting product was an upgrade to
Inspection Services for the residents and
city alike at no increase in cost
Finance Activity Unique to 2015
COMMUNITY PROFILE
• Community profiles are a useful
way of developing an
understanding of the people in a
geographical area or a specific
community of interest.
• The profile will be updated and
revised each year with the aim to
educate people who are not
familiar with the city, about what
makes St. Anthony unique
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Technological Advances
LASERFICHE
• Provides the benefit of efficient
access to data along with reducing
footprint for storing documents
not often referenced
VENDOR ACH PAYMENTS
• Eliminates the need for the printing
and mailing of a paper check.
• Vendors currently paid via ACH include
utility providers and other contracted
vendors where the amount billed is
similar month to month.
Long Term Financial Management
REFINANCE 2006 TIF REVENUE BONDS
• The Net Present Value Benefit of the refunding was $919,595 or
approximately $67,000 a year for sixteen years
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Long Term Financial Management
REBASE USE OF LIQUOR PROFITS
• The rebasing achieved its goal of maintaining structural balanced fund
for 2015 and 2016
Support Staff to Agencies
HUMAN RESOURCES SERVICES
MISSISSIPPI WATERSHED MANAGEMENT ORGANIZATION
Expanded financial services to include shared HR staff:
• Recruitment, selection, orientation, and placement of
candidates for employment
• Coordination and administration of the employee
insurance benefit programs and annual renewal process
• Assist in employee performance evaluation process
• Recommending, developing, administering, and evaluating
human resource policies, procedures and best practices
• Prepares reports and maintains records as related to
personnel management
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Support Staff to Agencies
FUND BALANCE MANAGEMENT TOOL
MISSISSIPPI WATERSHED MANAGEMENT ORGANIZATION
»Entire report available website at
www.ci.saint-anthony.mn.us
Annual Reports
QUESTIONS?
128
Date Type Staff Present
April 20 Special
6:30 pm Joint Meeting-Council, Planning, Dept Heads-Southern Gateway Redevelopment Study
City Council
City Manager
Department Heads
April 26 Regular
Presentation of 2016 Villager of the Year and 2016 Outstanding Business of the Year
Arbor Day Proclamation
GreenCorp Presentation
1st Quarter Goals Update
Public Hearing-Budget Calendar
Commissioner Mary Jo McGuire
Facilities/Fields Use Recommendations
Spirit of St. Anthony Award
City Council
City Manager
Public Works Director
May 2 Special
5:30 p.m.Worksession City Council
City Manager
May 7 9am-12pm Clean Up Day City Council
City Manager
May 10 Regular
Swear In new Police Officers
Retiring Police Chief and Captain Presentation
2016 Street Project Bond Sale and Award of Bonds
City Council
City Manager
Police Chief
May 17 Special
4:00 pm Tour of the City
City Council
City Manager
Department Heads
May 24 Regular
Salo Park Concert Series
Insurance Renewal
Tort Limits - Consent
Public Hearing-Mirror Lake Water Level
City Council
City Manager
City Engineer
May 31 Special
5:30 p.m.Joint Meeting with School Board City Council
City Manager
May 31 Special
7:00 p.m.Worksession City Council
City Manager
June 14 Regular Planning Commission Items from May
Order Feasibility Report for 2017 Street Project
City Council
City Manager
City Engineer
June 28 Regular
Audit Presentation
Debt Levy Presentation
City Council
City Manager
Finance Director
July 12 Regular
Planning Commission items from June
Quarterly Donations & Grants
Quarterly Goals Update
VillageFest Presentation
City Council
City Manager
July 26 Regular Night to Unite Presentation
Night to Unite Proclamation
City Council
City Manager
Police Chief
FUTURE COUNCIL AGENDA ITEMS
2016
129
Date Type Staff Present
FUTURE COUNCIL AGENDA ITEMS
August 1 Special
5:30 p.m.Worksession City Council
City Manager
August 2 Special Night to Unite
City Council
City Manager
August 9 Regular
Planning Commission items from July
SANB #282 Presentation
City Council
City Manager
August 23 Regular Budget Presentation
New Police Chief and Captain Presentation
City Council
City Manager
Finance Director
August 30 Special
5:30 p.m.Joint Meeting with School Board
City Council
City Manager
August 30 Special
7:00 p.m.Worksession
City Council
City Manager
September 13 Regular
Planning Commission items from August
2017 Preliminary Operating Budget and Levy-Public Hearing
2017 Street Project Accept Feasiblity Report, Order Plans and Specifications
Liquor Operations Mid Year Report
City Council
City Manager
Finance Director
Liquor Op Mgr
September 27 Regular
Fire Prevention Presentation
Kiwanis Peanut Day
City Council
City Manager
Fire Dept
October 3 Special
5:30 p.m.Worksession City Council
City Manager
October 11 Regular
Planning Commission items from September
Quarterly Donations & Grants
Certification of Delinquent Accounts
City Council
City Manager
October 25 Regular Quarterly Goals Update
Ordinance Setting Fees for 2016 - 1st Reading-Public Hearing
City Council
City Manager
October 31 Special
5:30 p.m.Worksession City Council
City Manager
November 8 Regular 2016 General Election
City Council
City Manager
November 8 Regular
8:00 pm Ordinance Setting Water & Sewer Rates for 2017 - 1st Reading-Public Hearing
City Council
City Manager
130
Date Type Staff Present
FUTURE COUNCIL AGENDA ITEMS
November 22 Regular
Ordinance Setting Water & Sewer Rates for 2017 - 2nd Reading
Fire Prevention Poster Winners
Tree Care Ordinance
City Council
City Manager
Finance Director
Police Dept
Fire Dept
November 29 Special
5:30 p.m.Joint Meeting with School Board City Council
City Manager
November 29 Special
7:00 p.m.Worksession City Council
City Manager
December 13 Regular
Planning Commission items from November
Appoint Parks and Planning Commissioners and Chair/Vice Chairs
Setting Salary of City Manager
Authorizing Transfers & Closing of Specified Funds
Setting the 2017 City & HRA Budgets and Final Property Tax Levy -Public Hearing
Ordinance Setting the Water& Sewer Rates for 2017 - final reading
2017 Street Project Approve Plans & Specifications, Authorize Advertisement for Bids
2017 Fee Schedule
City Council
City Manager
Finance Director
December 27 Regular
City Council
City Manager
January 10 Regular
Swearing in new councilmembers
Housekeeping Resolutions
Resolution for the Street Improvement Bond Reimbursement
Quarterly Donations & Grants
City Council
City Manager
January 12 & 13 Special Goal Setting
City Council
City Manager
Department Heads
January 24 Regular
2017 Parks Commission Work Plan- (motion only)
2017 Planning Commission Work Plan-(motion only)
Presentation-Northeast Youth and Family Services
Northeast Youth and Family Services Agreement
City Council
City Manager
February 14 Regular
Planning Commission items from January
Administration Annual Report
2017 Street Project Call for Hearing on Improvements, Call for Hearing on Assessments,
Order Preparation of Assessments
City Council
City Manager
City Engineer
February 28 Regular City Council
City Manager
2017
131
Date Type Staff Present
FUTURE COUNCIL AGENDA ITEMS
March 14 Regular
Fire Relief Ratifying Pension Benefit
Planning Commission Items from February
Liquor Annual Report
Fire Annual Report
2017 Street Project Public Hearing, Order Improvements, Adopt & Confirm Assessments,
Award Contract for Construction, Call for Sale of GO Bonds
2017 Strategic Plan (motion only)
Liquor License Renewals
GreenCorp Member application-resolution
City Council
City Manager
Fire Dept
Liquor Op Manager
March 28 Regular
Public Works Annual Report
Police Annual Report
2017 Street Project Call for Sale of Bonds
City Council
City Manager
Public Works Director
Police Dept
April 11 Regular
Planning Commission Items from March
Quarterly Donations & Grants
Finance Annual Report
City Council
City Manager
Finance Director
Items Pending:
~ Worksessions
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