1c NPDES Annual Report
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
1591 Park Road
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
ic
..,...
MEMORANDUM
TO:
Todd Gerhardt, City Manager
FROM:
Lori Haak, Water Resources Coordinator
Don Asleson, Natural Resources Technician ,,~ .
June 12, 2006
DA TE:
SUBJ:
National Pollutant Discharge Elimination System (NPDES) Phase
II Municipal Separate Storm Sewer System (MS4) Permit
2005 Annual Report
SUMMARY
Staff is requesting the City Council authorize the Mayor to sign the annual report
for submittal to the Minnesota Pollution Control Agenc.y(MPCA).
A simple
At the March 13,
the NPDES
made during
requested the
The completed
ATTACHMENTS
1. 2005 NPDES Phase II
g:\eng\lori\npdes phase ii\ms4 permit\2005
The City 01 Chanhassen . A growing community with clean lakes, quality schools, a Charming downtown, thriving businesses, winding trails, and beautiful parks. A great place to live, work, and play.
ANNUAL REPORT for 2005
MUNICIPAL SEPARATE STORM SEWER SYSTEMS (MS4s)
For Calendar Year 2005
Due June 30, 2006
Use of this form is mandatory. By completing this 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 and progress towards achieving your
identified measurable goals for each of the minimum control measures" as required by the MS4 Permit.
Submit your annual report by June 30, 2006 to:
MS4 Stormwater Program
Municipal Division
Minnesota Pollution Control Agency
520 Lafayette Road North
St. Paul, MN 55155-4194
If you have questions about the MS4 Annual Report for 2005 form, please visit the MPCA's MS4 Web site,
www.pca.state.mn.us/water/stormwater/stormwater-ms4.html or call the MPCA's Keith Cherryholmes (651) 296-6945,
or Scott Fox (651) 296-9433. Contact the MPCA toll free at (800) 657-3864.
City of Chanhassen
Name of MS4
Lori Haak, Water Resources Coordinator
Name of Contact Person
952-227-1135
Telephone (include area code)
7700 Market Boulevard, P.O. Box 147
Mailing Address
Chanhassen
City
MN
State
55317
ZIP code
A. Did you hold a public meeting for calendar year 2005 and discuss your Stormwater Pollution [8J Yes 0 No
Prevention Program (SWPPP)? [Part V.G.1.e]
B. If you did not comply with this requirement, explain why. Please attach a separate sheet labeled
'MCM-lc. '
C. How many individuals attended for stormwater? Q
D. What was the date ofthe public meeting? March 13, 2006
E. On what date was it published? March 9,2006
F. Summarize your plan to increase attendance at your public meeting:
Post notice on website, publishing in newspaper.
G. In what newspaper or publication of general interest did you publish the public notice of your meeting?
[Part V.G.1.e.2] Please retain a copy of the public notice in your records.
Chanhassen Villager newspaper
H. You must 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 the steps that the
public can take to reduce pollutants in stormwater runoff. [Part V.G.1.a.] Please list the accomplishment under this
permit requirement for the past year (January 2005 - December 2005):
New Resident Packets, School Presentations and Storm Drain Marking programs
I. You must specifically implement an education program that individually addresses each Minimum Control Measure
[Part V.G. 1.b.]:
1. Public education and outreach;
2. Public participation;
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3. illicit discharge detection and elimination;
4. Construction site stormwater runoff control;
5. Post-construction stormwater management in new development and redevelopment; and
6. Pollution prevention/good housekeeping for municipal operations. Please provide a status update concerning your
efforts to implement this education program for each of the Minimum Control Measures.
Provide your response below or provide a separate sheet labeled 'MCM-lh'
See MCM-lh
A. During your public meeting, did you receive written and/or oral input on your SWPPP? [Part
V.G.2.b.I-3] lnput must be considered prior to submittal of your annual report.
B. Did you create a record of comments and your response to comments/record of decision (ROD)?
C. Have you kept the ROD in accordance with the permit? [Part V.G.2.b]
D. Do you plan to incorporate any comments into your next SWPPP update? [Part V.G.2.c] List items:
N/A
DYes [8J No
[8J Yes 0 No
[8J Yes 0 No
DYesDNo
You must develop, implement and enforce a program to detect and eliminate illicit discharges as defined at 40 CPR
122.26(b )(2) into your SWPPP. You must also select and implement a program of appropriate BMPs and measurable
goals for this minimum control measure.
A. You must develop, if not already completed, a storm sewer system map showing the
location of [Part V.G. 3.a.]:
1. Ponds, streams, lakes and wetlands that are part of your system;
2. Structural pollution control devices (grit chambers, separators, etc.) that are part of your system;
3. All pipes and conveyances in your system, as a goal-but at minimum-those pipes that are 24 inches in diameter
and over;
4. Outfalls, including discharges from your system to other MS4s, or waters and wetlands that are not part of your
system (where you do not have operational control); structures that discharge stormwater directly into
groundwater; overland discharge points and all other points of discharge from your system that are outlets, not
diffuse flow areas.
Please explain here or on a separate sheet labeled MCM-3a, what your MS4 accomplished in developing this map
during 2005:
See MCM-3a
B. You must, to the extent allowable under law, effectively prohibit, through ordinance or other regulatory mechanism,
non-stormwater discharges from entering into your storm sewer [Part V.G.3.b.];
C. You must develop and implement a program to detect and address non-stormwater discharges, including illegal
dumping, to your system;
D. You must inform employees, businesses, and the general public in your MS4 area of hazards associated with illegal
discharges and improper disposal of waste;
E. You must address the following categories of non-stormwater discharges or flows (Le., illicit discharges), only if you
identify them as significant contributors of pollutants to your small MS4:
Water line flushing, landscape irrigation, diverted stream flows, rising ground waters, uncontaminated ground
water infiltration (as defined at 40 CPR 35.2005(20)), uncontaminated pumped ground water, discharges from
potable water sources, foundation drains, air conditioning condensation, irrigation water, springs, water from
crawl space pumps, footing drains, lawn watering, truck and car washing, flows from riparian habitats and
wetlands, dechlorinated swimming pool discharges, and street wash water, discharges or flows from firefighting
activities.
Please explain here or on a separate sheet labeled 'MCM-3b' what accomplishments your MS4 has made in 2005
regarding an illicit discharge ordinance, detection and elimination:
See MCM-3b
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You must 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 greater than or equal to one acre or
is less than one acre but is part of a common plan of development that will be one acre or greater. You must also select
and implement a program of appropriate BMPs and measurable goals for this minimum control measure, at minimum:
[Part V.GA.]
A. An ordinance or other regulatory mechanism to require erosion and sediment controls, as well as sanctions to
ensure compliance, to the extent allowable under law.
B. Requirements for construction site operators to implement appropriate erosion and sediment control best
management practices;
C. Requirements for construction site operators to control waste, such as discarded building materials, concrete
truck washout, chemicals, litter, and sanitary waste at the construction site that may cause adverse impacts to
water quality;
D. Procedures for site plan review which incorporate consideration of potential water quality impacts;
E. Procedures for receipt and consideration of reports of non compliance or other information on construction
related issues submitted by the public, and
F. Procedures for site inspection and enforcement of control measures.
Please provide a status/update here or on a separate sheet labeled 'MCM-4,' concerning your efforts to meet this
permit condition (be sure to indicate the citationfor ordinance):
See MCM-4
You must develop, implement, and enforce a program to address stormwater runoff from new development and
redevelopment projects within your jurisdiction that disturb 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. At minimum:
A. Develop and implement strategies which include a combination of structural and/or non-structural BMP
appropriate for your community;
B. Use an ordinance or other regulatory mechanism to address post-construction runoff from new development
and redevelopment projects to the extent allowable under law; and
C. Ensure adequate long-term operation and maintenance of BMP installed as a result of these requirements.
D. Do you feel your long-term operation and maintenance of your BMP is adequately funded?
Please provide a status/update concerning your efforts to meet this permit condition. Please provide your response
below or provide a separate sheet labeled 'MCM-5:'
See MCM-5
A. You must 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. Training materials that are
available from the U.S. Environmental Protection Agency, state and regional agencies, or other organizations may be
used as appropriate or modified for your community. 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.
Please provide a status/update about your efforts in developing a Pollution Prevention Plan:
SWPPP existed in 2005
B. Did you identify and inspect all of your structural pollution control devices such as trap manholes,
grit chambers, sumps, floatable skimmers and separators, etc.? [Part V.G.6.b.2]
C. How many structural pollution control devices do you have in your MS4 system? 58
[8J Yes DNo
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D. How many structural pollution control devices did you inspect? 58
E. Calculate the percentage: 100%
1fless than 100 % were inspected, please explain why below Non a separate sheet labeled 'MCM-6e:'
F. Did you repair, replace, or maintain any structural pollution control devices? [8J Yes D No
G. Briefly, summarize any significant unscheduled (not routine) maintenance or improvement activities
stemming from inspections of your structural pollution control devices. What changes have been
made to your SWPPP as a result? Please explain below or attach a separate sheet labeled 'MCM-6g'
[8] Yes 0 No
H. Did you identify and inspect at least 20% of outfalls and stormwater ponds? [Part V.G.6.b.3]
1. How many of each of the following do you have in your MS4?
a. Outfalls (see definition in Permit): 41
b. Stormwater Ponds: 350
2. Indicate if these facilities have all been located, or have only been estimated: located
3. How many of each did you inspect?
a. Outfalls: 41
b. Stormwater Ponds: 350
4. What is the percentage inspected for each?
a. Percentage of Outfalls: 100%
b. Percentage of Stormwater Ponds: 100%
5. If less than 20% of each type (outfalls and stormwater ponds) was inspected, please explain why:
Attach a separate sheet, ifnecessary, labeled 'MCM-6h-5'
6. Briefly, summarize the dates of completion of major additional protection measures triggered by your
inspections: [Part V.G.6.b.4] Attach a separate sheet, ifnecessary, labeled 'MCM-6h-6'
A. Did you make a change to any identified best management practices or measurable goals that were 0 Yes [8J No
submitted with your permit application? [Part V.G.6.b.l] lfyou responded yes, explain under part B.
B. Briefly list the best management practices using their unique identification numbers you used in your
SWPPP or any measurable goals that will be changed in your updated SWPPP, and why they have
changed: Attach a separate sheet ifnecessary labeled '7b.'
C. Did you rely on any other entities (MS4s, consultants or contractors) to satisfy any portion of your [8] Yes 0 No
SWPPP? If yes, please identify below the entity andfor what activities:
Carver Soil and Water Conservation District- Erosion Control Inspection
SEH- 2005 Surface Water Management Plan Update and Inventory
D. Do you discharge to waters with a restricted discharge? See Appendix C Part B; you may view the 0 Yes [8J No
applicable rules at www.pca.state.mn.us/water/water mnrules..html. If you need assistance with this
determination, contact Keith Cherryholmes, MPCA, (651) 296-6945.
If you answered "no" to question "D," above, skip ahead to the Owner or Operator Certification section of this
application. No response is needed here unless there was a change in listing or where your discharger s) is/are located
since 2004.
a) A map of the watersheds where your MS4 discharges to the waters with restricted discharge.
Use a USGS map or equivalent
b) A narrative estimate of the impervious surfaces where your MS4 discharges to the waters with restricted
discharge (estimated total impervious from land use and zoning or existing data can be used if available).
c) A narrative estimate of the future / projected impervious surfaces where your MS4 discharges to the waters with
restricted discharge (using available zoning or planning information that may affect your future discharges).
d) A narrative estimate of how your SWPPP can be altered to eliminate new or expanded discharges to the waters
with restricted discharge. This consists of your preliminary plan to ~void, divert, or eliminate discharges to
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restricted waters, whenever possible.
The person with overall administrative responsibility for SWPPP implementation must sign the annual report. This person
must be duly authorized and should be the person who signed the MS4 permit application or a successor.
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). I am aware that there are significant penalties for submitting false information, including
the possibility of fine and imprisonment (Minn. R. 7001.0540).
x
Date
Authorized Signature (This person must be duly authorized
to sign the annual report for the MS4)
Furlong
Last Name
7700 Market Boulevard, P.O. Box 147
Mailing Address
Chanhassen
City
(952) 227-1100
Telephone (include area code)
Thomas
First Name
Mayor
Title
MN 55317
State ZIP code
tfurlong@ci.chanhassen.mn.us
E-mail Address
Submit your annual report by June 30, 2006 to:
MS4 Stormwater Program
Municipal Division
Minnesota Pollution Control Agency
520 Lafayette Road North
St. Paul, MN 55155-4194
If you have questions about the MS4 Annual Report for 2005 form, please visit the MPCA's MS4 Web site,
www.pca.state.mn.us/water/stormwater/stormwater-ms4.html or call the MPCA's Keith Cherryholmes (651) 296-6945 or
Scott Fox (651) 296-9433. Contact the MPCA toll free at (800) 657-3864.
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2005 Small Municipal Separate Storm Sewer Systems (MS4) Annual Report
Summary of Efforts
MCM- Ih: Januarv 2005- December 2005 education MCM efforts status update
1) Public education and outreach
During the 2005-2006 permit cycle the public education and outreach educational
minimum control measures (MCMs) were implemented as scheduled in the
permit. To summarize the educational activities that occurred during the 2005-
2006 permit cycle the following actions have been completed:
a) Multiple presentations to elementary school classes on water quality.
b) Storm Drain Marking Program continued with volunteer groups.
c) New resident packets mailed with educationallinformational materials
d) Updated Clean Water Hotline to include timely information.
e) Articles on water quality in Chanhassen Villager and Chanhassen
Connection.
f) Published notice of annual public meeting in Chanhassen Villager and on
website.
g) Annual Meeting and public hearing held March 13,2006
2) Public participation
During the 2005-2006 permit cycle the public education and outreach educational
minimum control measures (MCMs) were implemented as scheduled in the
permit. To summarize the educational activities that occurred during the 2005-
2006 permit cycle the following actions have been completed:
h) Multiple presentations to elementary school classes on water quality.
i) Storm Drain Marking Program continued with volunteer groups.
j) New resident packets mailed with educationallinformational materials
k) Updated Clean Water Hotline to include timely information.
l) Articles on water quality in Chanhassen Villager and Chanhassen
Connection.
m) Published notice of annual public meeting in Chanhassen Villager and on
website.
n) Annual Meeting and public hearing held March 13, 2006
3) Illicit discharge detection and elimination
2005 educational efforts listed in the 2004-2008 EAIP were completed. The City
web page was updated to include the latest information for stormwater issues and
NPDES MS4 permit. The Clean water hotline (formerly known as the water
quality hotline) was also updated as part of the 2005-2006 activities. Storm drain
marking program continued with the help of volunteers. Drains marked and
information distributed in neighborhoods.
Page 1 of 4
2005 Small Municipal Separate Storm Sewer Systems (MS4) Annual Report
Summary of Efforts
4) Construction site stormwater runoff control.
The City continued using the clean water hotline as a way for residents to report
illicit discharge from construction sites.
5) Post-Construction stormwater management in new development and
redevelopment.
The City has been using volunteers to mark storm drains in new
development/redevelopment areas to educate public on water quality issues.
6) Pollution prevention/good housekeeping for municipal operations
The City of Chanhassen held a meeting for City personnel on hazardous
materials management. Attendance included representa,tives from the fire
department, street maintenance department, fleet department and water
resources coordinator. Procedures were developed for illicit discharges,
hazardous and non-hazardous.
MCM-3a: Storm sewer map development
. 2005 Storm sewer map development as part of the Surface Water Management Plan
Update activity resulted in the following:
1) All ponds, streams, lakes and wetlands in the storm water system have been
mapped.
2) All structural pollution control devices have been mapped.
3) All pipes over 24 inches in diameter and most under 24 inches have been
mapped.
4) And outfalls within the system have been mapped.
MCM-3b: Illicit dischan!e permit conditions
The City of Chanhassen has ordinances established to prohibit non-stormwater discharges
from entering the storm sewer. Current City Code Section 19-130 prohibits non-
stormwater discharges (Ordinance 5-A, Ordinance 362).
Visual inspections occurred for all structures and pipes included as part of the system
mappmg.
Inspections for illicit discharge will occur during the 5-year inspection cycle with 20%
being inspected each year.
Employees held a meeting during the 2005 year permit cycle on illicit discharge (see
BMP #73). Public has been informed of illicit discharge in the community newspaper and
on the city web page.
Page 2 of 4
2005 Small Municipal Separate Storm Sewer Systems (MS4) Annual Report
Summary of Efforts
No additional non-stormwater discharges have been identified as significant contributors
of pollutants within the City of Chanhassen.
MCM-4: Construction site runoff control
Chanhassen City Code Section 7-22 regulates Construction Site runoff control. (Ord. No.
176, ~ 1, 10-12-92; Ord. No. 351, ~ 5, 11-24-03)
Additionally, the City of Chanhassen reviews site plans and comments on potential water
quality impacts. Once the project is approved, the City contracts with Carver Soil and
Water Conservation District to inspect the active construction sites. If problems exists the
City of Chanhassen reserves the right to issue a stop work order and/or draw on the
contractors letter of credit to correct the problem.
Minimum requirements for construction sites include inlet protection, street sweeping,
silt fence and other acceptable sediment barriers, rock driveways and temporary and
permanent groundcover. With the completion of the 2005 Surface Water Management
Plan Update it is anticipated that Construction site erosion and sediment control portions
of the ordinance will be re-addressed for adequacy once the plan is adopted.
The City of Chanhassen has developed the Clean Water Hotline as a tool for the public to
report illicit discharges. This hotline is monitored and complaints are investigated. Zero
calls reporting illicit discharge were received during the 2005-2006 permit cycle.
MCM- 5: Post-Construction stormwater mana2ement in new development and re-
development
a) Post construction program summary
This will be revisited with the completion of the 2005 Surface Water Management
Plan Update.
b) Ordinance to address post-construction runoff from new development and re-
development.
City Code Section 18-78 addresses the post construction runoff from new
developments and re-developments. This will be assessed for adequacy with the
completion of the Surface Water Management Plan Update.
c) Long term operation and maintenance of BMPs
The City currently has a Surface Water Management Fund established. The fees to
support the fund were recently evaluated and will continue to be adjusted in the future
to support long term operation and maintenance of the storm water system.
Page 3 of 4
2005 Small Municipal Separate Storm Sewer Systems (MS4) Annual Report
Summary of Efforts
6a: Pollution prevention and 200d housekeepin2 for municipal operations
SWPPP existed and was followed during the 2005-2006 permit cycle.
Page 4 of 4