1h. NPDES Permit CITY OF MEMORANDUM
C H"Y H" ~SEN TO: Todd Gerhardt, City Manager
7700 Market Boulevard
P Box 147 FROM: Terry Jeffery, Water Resources Coordinator 0
Chanhassen, MN 55317
DATE: July 23, 2012
Administration
Phone: 952.2271100 RE: Approve NPDES Permit for Municipal Separate Storm Sewer
Fax: 952.2271110 System (MS4) 2011 Annual Report for Submittal to the MPCA
Building Inspections SWMP15C
Phone: 952.2271180
Fax: 952.2271190 PROPOSED MOTION
Engineering
Phone: 952.2271160 "The City Council approves authorization to sign and submit the 2011 National
Fax: 952.2271170 Pollution Discharge Elimination System (NPDES) Municipal Separate Storm
Sewer (MS4) Permit to the Minnesota Pollution Control Agency."
Finance
Phone: 952.2271140 City Council approval requires a simple majority vote of the City Council
Fax: 952.2271110 present.
Park & Recreation
Phone: 952.2271120 Part VI. D. of the Permit Authorization to Discharge Storm Water Associated
Fax: 952.2271110 with Municipal Separate Storm Sewer Systems under the National Pollution
Recreation Center
Discharge Elimination System (MNR040000) requires that permit holders submit
2310 Coulter Boulevard an annual report to the MPCA. This report must detail the activities of the permit
Phone: 952.2271400 year, any cooperative agreements to fulfill the permit requirements, proposed
Fax: 952.2271404 activities for the forthcoming year and any changes to the Storm Water Pollution
Prevention Plan (SWPPP). This report is to be submitted electronically.
Planning &
Natural Resources
Phone: 952.2271130 Attachments: 2011 Annual Report
Fax: 952.2271110 2011 Annual Highlights
Public Works
7901 Park Place
Phone: 952.2271300
Fax: 952.2271310
Senior Center
Phone: 952.2271125
Fax: 952.2271110
Web Site
www.ci.chanhassen.mn.us
Chanhassen is a Community for Life - Providing for Today and Planning for Tomorrow
0
CITY OF
CHANHASSEN
7700 Market Boulevard
PO Box 147
Chanhassen, MN 55317
Administration
Phone: 952.227.1100
Fax: 952.227.1110
Building Inspections
Phone: 952.227.1180
Fax: 952.227.1190
Engineering
Phone: 952.227.1160
Fax: 952.227.1170
Finance
Phone: 952.227.1140
Fax: 952.227.1110
Park & Recreation
Phone: 952.227.1120
Fax: 952.227.1110
Recreation Center
2310 Coulter Boulevard
Phone: 952.227.1400
Fax: 952.227.1404
Planning &
Natural Resources
Phone: 952.227.1130
Fax: 952.227.1110
Public Works
7901 Park Place
Phone: 952.227.1300
Fax: 952.227.1310
Senior Center
Phone: 952.227.1125
Fax: 952.227.1110
Web Site
www.ci.chanhassen.mn.us
MEMORANDUM
TO: Todd Gerhardt, City Manager
FROM: Terry Jeffery, Water Resources Coordinator �.
DATE: July 23, 2012
RE: Approve NPDES Permit for Municipal Separate Storm Sewer
System (MS4) 2011 Annual Report for Submittal to the MPCA
SWMPI5C
PROPOSED MOTION
"The City Council approves authorization to sign and submit the 2011 National
Pollution Discharge Elimination System ( NPDES) Municipal Separate Storm
Sewer (MS4) Permit to the Minnesota Pollution Control Agency."
City Council approval requires a simple majority vote of the City Council
present.
Part VI. D. of the Permit Authorization to Discharge Storm Water Associated
with Municipal Separate Storm Sewer Systems under the National Pollution
Discharge Elimination System (MNR040000) requires that permit holders submit
an annual report to the MPCA. This report must detail the activities of the permit
year, any cooperative agreements to fulfill the permit requirements, proposed
activities for the forthcoming year and any changes to the Storm Water Pollution
Prevention Plan (SWPPP). This report is to be submitted electronically.
Attachments: 2011 Annual Report
2011 Annual Highlights
Chanhassen is a Community for Life - Providing for Todayand Planning for Tomorrow
Minnesota Pollution MS4 Annual Report for 2011
..
Control Agency
520 Lafayette Road North Municipal Separate Storm Sewer Systems (MS49)
St Paul MN 55155-4194 Reporting period January 1, 2011 to December 31, 2011
Due June 30, 2012
Doc Type: Permitting Annual Report
Instructions: By completing this mandatory MS4 Annual Report form, you are providing the Minnesota Pollution Control Agency
(MPCA) with a summary of your status of compliance with permit conditions, including an assessment of the appropriateness of your
identified best management practices (BMPs) and progress towards achieving your identified measurable goals for each of the
minimum control measures as required by the MS4 Permit. If a permittee determines that program status or compliance with the permit
can not be adequately reflected within the structure of this form additional explanation and /or information may be referenced in an
attachment. This form has significant limitations and provides only a snap shot of MS4 compliance with the conditions in the permit.
After reviewing the information, MPCA staff may need to contact the permittee to clarify or seek additional information.
Submittal: This MS4 Annual Report must be submitted electronically to the MPCA using the submit button at the end of the form,
from the person that is duly authorized to certify this form. All questions with an asterisk ( *) are required fields (these fields also
have a red border), and must be completed before the form will send. A confirmation e-mail will be sent in response to electronic
submissions.
If you have further questions, please contact one of these MPCA staff members (toll -free 800 - 657 - 3864):
• Joyce Cieluch 218 - 846 -8126
• Scott Fox 651 - 757 -2368
• Amy Garcia 651 - 757 -2377
General Contact Information ( * Required fields)
*Name of MS4: City of Chanhassen
*Mailing address: 7700 Market Blvd, PO Box 147
*City: Chanhassen
*Phone (including area code): 952 - 227 -1168
*Contact name: Terry Jeffery
*State: MN *Zip code: 55317
*E -mail: tjeffery@ci.chanhassen.mn.us
Minimum Control Measure 1: Public Education and Outreach [V.G.1 ] ( * Required fields)
A. The permit requires each permittee to implement a public education program to distribute educational materials to the
community or conduct equivalent outreach activities about the impacts of stormwater discharges on water bodies and steps
that the public can take to reduce pollutants in stormwater runoff. [Part V.G.1.a]
Note: Please indicate which of the following distribution methods you used. Indicate the number distributed in the spaces
provided (enter "0" if the method was not used or "NA" if the data does not exist):
Media type
Number of media
Number of times p ublished
Circulation/
Audience
Example: Brochures:
3 different brochures
published 5 times
about 10,000
Brochures:
10 different brochures
Published 1 time
about 400
Newsletter:
21 different articles
Published 1 time
-9,900 /publication
Posters:
6 different posters
Published 1 time
23,000 (City -wide)
News a er articles:
8 different articles
Published 1 time
-14,500 /publication
Utility bill inserts:
None
Radio ads:
None
Television ads:
None
Cable Access Channel:
None
Other: Events
5 different events
1 session each
-100- 25,000 /event
Other: Workshops /Classes
7
Offered 1 time
-30 - 200 participan
Other: Stormwater Hotline
2 -5 alerts /messages
updated every 2 -4 weeks
Unknown
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wq- strm4 -06 • 319112 Page 1 of 5
B. *Do you use a website as a tool to distribute stormwater educational materials? ❑x Yes ❑ No
What is the URL: http: / /www.ci.chanhassen .mn.us /sery /nresourc.html
C. If you answered yes in question B. above, do you track hits to the website? ❑x Yes ❑ No
How many hits were to the stormwater webpage:
D. *Did you hold stormwater related events, presentations to schools or other such activities? ❑X Yes ❑ No
If yes, please describe:
Stormwater related educational materials were presented at Recycling Day, Arbor Day, Chanhassen Day at the Arboretum, 4th of July
Celebration - Environmental Booth, 4th of July Parade Environmental Float/Material Distribution, Co- sponsored stormwater and
stormwater - related workshops, talks and classes at the Arboretum and in partnership with other local entitities.
E. *Have specific messages been developed and distributed during this reporting year for Minimum Control Measure (MCM):
MCM 1: ® Yes ❑ No MCM 4: ❑x Yes ❑ No
MCM 2: ® Yes ❑ No MCM 5: 0 Yes ❑ No
MCM 3: ® Yes ❑ No MCM 6: 0 Yes ❑ No
F. *Have you developed partnerships with other MS4s, watershed districts, local or state governments, ❑X Yes ❑ No
educational institutions, etc., to assist you in fulfilling the requirements for MCM 1?
G. List those entities with which you have partnered to meet the requirements of this MCM and
describe the nature of the agreement(s): (Attach a separate sheet if necessary.)
Carver Soil and Water Conservation District: Storm water construction, post- construction education; Carver County: General storm water
eduction, workshops, and events; U of M Arboretum - Workshops, classes,and events on variety of storm water related topics, Minnehaha
Creek Watershed District: General storm water education and workshops; Riley- Purgatory-Bluff Creek Watershed District: General storm
water education; Lower Minnesota River Watershed District: General storm water education; Metro Blooms: Rain garden workshops
H. *Have you developed methods to assess the effectiveness of your public education /outreach ® Yes ❑ No
program?
If yes, please describe:
City -wide survey, website tracking, messages left on the City's storm water hotline, event participation, tracking of residents that apply for
storm water related educational events and programs.
Minimum Control Measure 2: Public Participation /Involvement [V.G.2] ( * Required fields)
A. *Did you hold a public meeting to present accomplishments and to discuss your Stormwater ❑X Yes ❑ No
Pollution Prevention Program ( SWPPP)? [Part V.G.1.e]
If no, explain:
B. What was the date of the public meeting (mm /dd /yyyy): 06/27/2011
C. How many citizens attended specifically for stormwater
(excluding board /council members and staff /hired consultants)? 0
D. Was the public meeting a stand -alone meeting for stormwater or was it combined with some other
function (City Council meeting, other public event, etc.)?
E. *Each permittee must solicit and consider input from the public prior to submittal of the annual
report. Did you receive written and /or oral input on your SWPPP? [Part V.G.2.b.1 -3]
F. *Have you revised your SWPPP in response to written or oral comments received from the public
since the last annual reporting cycle? [Part V.G.2.c]
If yes, describe: (Attach a separate sheet if necessary.)
❑ Stand -alone
❑x Combined
❑ Yes ❑X No
❑ Yes ❑x No
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Minimum Control Measure 3: Illicit Discharge Detection and Elimination [V.G.3] ( * Required fields)
The permit requires permittees to develop, implement, and enforce a program to detect and eliminate illicit discharges as defined
in 40 CFR 122.26(b)(2). You must also select and implement a program of appropriate BMPs and measurable goals for this
minimum control measure.
A. *Did you update your storm sewer system map? ❑x Yes ❑ No
If yes, please explain which components (ponds, pipes, outfalls, waterbodies, etc.) were
updated /added:
The storm sewer system map is constantly being updated in relation to all components listed as they are added or altered. This mapping
effort is being paired with CartegraphTM, an asset management software, in order to better manage and track inspections,complaints and
O &M.
Note: The storm sewer system map was to be completed by June 30, 2008. [Part V. G.3. a]
B. *Have you modified the format in which the map is available? ❑x Yes ❑ No
C. If yes, indicate the new format:
❑ Hardcopy only ❑ GIS system ❑ CAD ❑x Other system: Cartegraph"I
D. *Have you established an ordinance or other regulatory mechanism to prohibit illicit discharges Yes ❑ No
and /or non - stormwater discharges from entering the MS4?
Note: The permit required the ordinance or other regulatory mechanism to be established by June
30, 2010 [Part V.G.3.b].
E. If yes, indicate which mechanism you have established: ❑x Ordinance ❑ Regulatory
F. If you answered yes in question D above, provide the date the ordinance or other regulatory
mechanism was adopted (mm /dd /yyyy): 2/12/2007
G. *Did you inspect for illicit discharges during the reporting year?
H. If you answered yes in question G above, did you identify any illicit discharges?
I. If you answered yes in question H above, how many illicit discharges were detected during the
reporting period:
❑x Yes []No
[]Yes ❑x No
J. If you answered yes in question I above, did the illicit discharge result in an enforcement action? []Yes ❑x No
If yes, what type of enforcement action(s) was taken (check all that apply):
❑ Verbal warning ❑ Notice of violation ❑ Fines ❑ Criminal action
❑ Civil penalties ❑ Other (describe):
Minimum Control Measure 4: Construction Site Stormwater Runoff [V.G.4] ( * Required fields)
The permit requires that each permittee develop, implement, and enforce a program to reduce pollutants in any stormwater
runoff to your small MS4 from construction activities within your jurisdiction that result in a land disturbance of equal to or greater
than one acre, including the disturbance of less than one acre of total land area that is part of a larger common plan of
development or sale if the larger common plan will ultimately disturb one or more acres. [Part V.G.4.]
A. The permit requires an erosion and sediment control ordinance or regulatory mechanism that must include sanctions to
ensure compliance and contains enforcement mechanisms [Part V.G.4.a]. Indicate which of the following enforcement
mechanisms are contained in your ordinance or regulatory mechanism and the number of actions taken for each
mechanism used during the reporting period (enter "0" if the method was not used or "NA" if the data does not exist).
Check all that apply.
Enforcement mechanism
Number of actions
❑x Verbal warnings
#
82
❑x Notice of violation
#
82
❑ Administrative orders
#
❑x Stop-work orders
#
2
Fines
#
❑x Forfeit of security of bond money
#
0
❑x Withholding of certificate of occupancy
#
2
Criminal actions
#
❑ Civil penalties
#
❑X Other: Witholding Payment Request
#
2
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B. *Have you developed written procedures for site inspections?
C. *Have you developed written procedures for site enforcement?
❑x Yes ❑ No
❑x Yes ❑ No
D. *Identify the number of active construction sites greater than an acre in your jurisdiction during
the reporting period year: 13
E. *On average, how frequently are construction sites inspected (e.g., weekly, monthly, etc.)?
F. *How many inspectors, at any time, did you have available to verify erosion and sediment control
compliance at construction sites during the reporting period:
Weekly
L.
Minimum Control Measure 5: Post - construction Stormwater Management in New Development
and Redevelopment [V.G.5] ( * Required fields)
The permit requires each permittee to develop, implement, and enforce a program to address stormwater runoff from new
development and redevelopment projects within your jurisdiction that disturb an area greater than or equal to one acre, including
projects less than one acre that are part of a larger common plan of development or sale that discharge into your small MS4. Your
program must ensure that controls are in place that would prevent or reduce water quality impacts. You must also select and
implement a program of appropriate BMPs and measurable goals for this minimum control measure.
Note: The M34 permit requirements associated with this minimum control measure were required to be fully developed and
implemented by June 30, 2008.
A. *Have you established design standards for stormwater treatment BMPs installed as a result of ❑x Yes ❑ No
post- construction requirements?
B. *Have you developed procedures for site plan review which incorporate consideration of water ❑x Yes ❑ No
quality impacts?
C. *How many projects have you reviewed during the reporting period to ensure adequate long -term
operation and maintenance of permanent stormwater treatment BMPs installed as a result of
post- construction requirements? [Part V.G.5.b.and Part V.G.5.c]. 11
D. *Do plan reviewers use a checklist when reviewing plans? ❑x Yes ❑ No
E. *How are you funding the long -term operation and maintenance of your stormwater management
system? (Check all that apply)
❑ Grants ❑x Stormwater utility fee []Taxes ❑ Other:
Minimum Control Measure 6: Pollution Prevention /Good Housekeeping for Municipal
Operations [V.G.6] ( * Required fields)
The permit requires each MS4 to develop and implement an operation and maintenance program that includes a training
component and has the ultimate goal of preventing or reducing pollutant runoff from municipal operations. Your program must
include employee training to prevent and reduce stormwater pollution from activities, such as park and open space maintenance,
fleet and building maintenance, new construction and land disturbances, and stormwater system maintenance.
A. *Indicate the total number of structural pollution control devices (for example -grit chambers, sumps,
floatable skimmers, etc.) within your MS4, the total number that were inspected during the
reporting period, and calculate the percent inspected. Enter "0" if your MS4 does not contain
structural pollution control devices or none were inspected. Enter "NA" if the data does not exist:
*Total number I *Number inspected *Percentage
*Structural pollution control devices: 1 144 1 65 45
B. *Did you repair, replace, or maintain any structural pollution control devices?
C. *For each BMP below, indicate the total number within your MS4, how many of each BMP type
were inspected and the percent inspected during the reporting period. Enter "0" if your MS4
does not contain BMPs or none were inspected. Enter "NA" if the data does not exist:
Structure/Facility type
*Total number
*Number inspected
*Percentage
*Outfalls to receiving waters:
66
17
26
*Sediment basins/ ponds:
189
32
17
*Total
255
49
19
D. Of the BMPs inspected in C. above, did you include any privately owned BMPs in that number?
E. If yes in D. above, how many: 16
❑x Yes ❑ No
❑x Yes ❑ No
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Section 7: Impaired Waters Review ( * Required Melds)
The permit requires any MS4 that discharges to a Water of the State, which appears on the current U. S. Environmental Protection
Agency (EPA) approved list of impaired waters under Section 303(d) of the Clean Water Act, review whether changes to the
SWPPP may be warranted to reduce the impact of your discharge [Part IV.D].
A. *Does your MS4 discharge to any waters listed as impaired on the state 303 (d) list? ❑x Yes [:]No
B. *Have you modified your SWPPP in response to an approved Total Maximum Daily Load (TMDL)? ❑ Yes x❑ No
If yes, indicate for which TMDL:
Section 8: Additional SWPPP Issues ( * Required fields)
A. *Did you make a change to any BMPs or measurable goals in your SWPPP since your last
report? [Part V.H.]
B. If yes, briefly list the BMPs or any measurable goals using their unique SWPPP identification
numbers that were modified in your SWPPP, and why they were modified: (Attach a separate
sheet if necessary.)
C. *Did you rely on any other entities (MS4s, consultants, or contractors) to implement any portion
of your SWPPP?
If yes, please identify them and list activities they assisted with:
Carver SWCD - Construction site storm water inspections and enforcement.
Carver County WMO - MOU for education and outreach.
Owner or Operator Certification ( * Required fields)
❑ Yes ❑x No
❑x Yes ❑ No
The person with overall administrative responsibility for SWPPP implementation and Permit compliance must certify this MS4
Annual Report. This person must be duly authorized and should be either a principal executive (i.e., Director of Public Works, City
Administrator) or ranking elected official (i.e., Mayor, Township Supervisor).
❑ *Yes - I certify under penalty of law that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the
information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly
responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true,
accurate, and complete (Minn. R. 7001.0070). 1 am aware that there are significant penalties for submitting false
information, including the possibility of fine and imprisonment (Minn. R. 7001.0540).
*Name of certifying official:
*Title:
*Date:
(mm/dd/yyyy)
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wq- strm4 -06 • 319112 Page 5 of 5
2011 ANNUAL NPDES MS4 REPORT
HIGHLIGHTS
The City's National Pollutant Discharge Elimination System ( NPDES) Municipal Separate Storm Sewer System
(MS4) Permit was issued by the Minnesota Pollution Control Agency (MPCA) in 2006. The MPCA is currently
working on reissuance of the MS4 General Permit. The City has reapplied for permit coverage, as required.
After the Permit is reissued, the City will be contacted by the MPCA and be informed as to what
additional information is needed.
The new permit will shift from the initial focus on program development to measuring implementation,
focusing on main issues that have been identified, and will make efforts to streamline and clarify
requirements. Final action on this rule is expected by December 2012.
The current permit requires 6 Minimum Control Measures (MCM) with 57 Best Management Practices (BMP).
MCM I - Education & Outreach
Events & Programs
- Arbor Day
- Chanhassen Day at the Arboretum - Residents are given free admission to the
arboretum. Educational programs and activities are also offered on this day.
- WaterWise Program - Educational and incentive program for residents that encourages
water conservation and water quality improvement practices.,
- Storm Drain Marking Program - The City utilizes volunteer groups to mark storm drains
and distribute educational materials in residential neighborhoods.
Partnerships
- Metrowater
- Minnesota Landscape Arboretum - Partnered to provide educational programs in
landscaping for water quality.
- Metropolitan Council - City continues to partner with the Metropolitan Council in the
Citizen Assisted Monitoring Program (CAMP), which collects lake samples and monitors
water quality for 6 lakes within Chanhassen.
- MetroBlooms - Educational courses in raingardens and other water quality landscaping
practices provided to Chanhassen and other Carver County Residents residents.
Carver County - Memorandum of Understanding for 2010;
St. Huberts Summer Stretch volunteer program and other volunteer groups (Boy Scouts,
etc.) partner with the city in the City's Storm Drain Marking program.
Other Media
- Website
- City's Stormwater Hotline (952- 227 -1351) continues to be available to residents as a
way to inform residents and allow public report of stormwater issues.
- Articles related to storm water quality were included in each Chanhassen Connection in
all 2010 issues.
MCM II - Public Involvement
• Public Hearing provided for the City's NPDES MS4 Permit
• Website
• Storm Drain Marking volunteer program
• Hotline
• Carver County Watershed Management Organization started a
MCM III - Illicit Discharge Detection & Elimination (IDDE)
• Continuing to inspect outfalls and update stormwater map
• Staff has inspected all stormwater ponds and outfalls within the City.
• These inspections as well as inspections regarding inlets, outlets, and other
structures have been incorporated into CartegraphT' - the City's asset management
program for utilities.
• In -house education presented by Staff and Carver County SWCD
• ISTS Inspection program - 5 new septic systems were inspected by city staff, 4 were found to
be failing. 88 maintenance reminders were sent to property owners for the septic
maintenance program.
MCM IV - Construction Site Runoff Control
• In partnership with the City, Carver Soil and Water Conservation District reviewed erosion
and sediment control plans for 6 development sites and performed construction site
inspections within these sites during the 2010 construction season.
• 6 construction sites greater than 1 acre in 2010 - all inspected weekly and within 48 hours
of rainfall event.
• Bi- weekly inspections of construction sites under 1 acre throughout 2010.
• 66 Notices of violation, 1 Cease & Desist Order
MCM V - Post - Construction Control
654 in -house man hours devoted to storm sewer repairs. This does not include the use of
contractors.
Audubon Road Improvements - Stormwater system improvements made to provide
stormwater treatment to runoff that had formerly been directed to Bluff Creek untreated.
Post - Construction BMPs are inspected annually.
MCM VI - Good Housekeeping
• The Streets Department continues to inspect weir structures, flared -end sections, sump
manholes and other structural BMPs to assure they are functioning properly.
• 100% of the 64 MS4 outfalls inspected in 2010.
• 3 stormwater ponds were maintained in 2010.
• 65/65 of the City's sump manholes were maintained in 2011.
Moving Forward
• 2012 Permit - pond maintenance and EPA testing
• NPDES MS4 reissuance requirement review and implementation.
• Continue development of metric for prioritizing ponds for maintenance using
Cartegraph. This will further address potential changes to the permit as well as
allow for more efficient management of these assets.
• Bluff Creek TMDL (Total Maximum Daily Load) study in progress
• Website improvements and updates
• Memorandum of Understanding with Carver County WMO for education