HomeMy WebLinkAbout10/21/08MINUTES OF THE LAKE ADVISORY COMMITTEE
October 21, 2008
The Lake Advisory Committee (LAC) Meeting was called to order at 4:30 P.M.
Members present: Harry Alcorn (Chair), Donna Mankowski (Vice Chair), Dan
O'Keefe, Char Jasan, Jim Marchessault.
Others present: Ross Bintner, Water Resources Engineer.
I. CALL TO ORDER
II. APPROVAL OF MINUTES (Marchessault, Jasan 4:0)
III. OLD BUSINESS
IV. OTHER BUSINESS
V. STAFF UPDATE
A. MS4 Educational Item: Fall lawn/leaf cleanup - Bintner explained that
leaves make up a large nutrient load in the watershed and said
homeowners can help reduce the nutrient impact to water quality by
helping to clean them from the street after a windy fall day. Compost
leaves and grass clippings, never dispose of them in ponds or wetlands.
Alcorn asked if the City swept more often in the fall. Bintner explained
that the City has a street sweeping program that is in its second year and
have noticed that 60% of the total volume of material is collected in the
months of October and November. The City therefore ta~gets this time of
year for additional sweeping.
B. Bacteria testing results. Bintner summarized the testing results for 2008,
the criteria for closing a beach, adding that this was the first year a beach
was actually closed due to an elevated level.
C. Star Tribune Article - Bintner presented a educational article was in the
Star Tribune in June.
VI. NEW BUSINESS
A. DNR Aquatic Plant Management Rule Revision - Alcorn introduced
the item. Bintner summarized the documents included in the
packet that were obtained from the DNR website on the rule
revision. Major points in the rule revision include: Total permits are
increasing over time, there is confusion about aquatic plant
management and clearing weeds for aquatic aesthetics, total
treatable area has decreased for many lake lots. LAC comments
will be collected and forwarded on to the DNR for the rules process.
O'Keefe stated that he noticed that there is a maximum percent of
any lake that can be treated with chemicals, 17-22% can be
treated, who is in charge of tallying how much is treated. Bintner
explained his understanding is that 15% of the littoral area (those
areas 15' deep or less) can have pesticide control. Bintner
explained with the geometry of Upper prior and Spring might make
it impossible for private treatment alone to meet the 15% threshold.
Alcom asked if the watershed is doing treatment. Bintner said that
the PLSLWD has done studies in the past. Mankowski said the
rules include a fee for mechanical harvesting of $50 and added that
the DNR ought to let local govemments about when major permits
are taken out and harvesting will take place. Sometimes weeds
might be dumped in the lake if the harvester is not watched.
Bintner explained the concept of a vegetation management plan,
saying that type of individual permit now has specific information
requirements. Alcom said we might want to consider a vegetation
management plan in the future. Hedberg stated that a maximum of
'/2 of the treatable area is a large change and asked if anyone on
the LAC would be effectd by that? Mankowski said she believed
that most have treated their entire property when the do it, and
there will be a big effect if people actually follow the permit.
Hedberg said there needs to be education about the effect of
treatment on the lake and lake water quality adding that the DNR
should be encouraged to do more statewide education. O'Keefe -
said the LAC could play a role in getting the word out on changes,
that the Watershed District will play a role as well. O'keefe added
that as a~sherman, he can tell the difference when vegetation is
controlled, there is not as much habitat for fish and the fishing
suffers. Mankowski hoped the DNR would publicize the changes
once they are final through newsletters or meetings with
neighborhood groups and other stakeholders. Hedberg stated that
for the first time the City offered a rain garde~ program with their
street reconstruction. These types of water quality activities could
be continued and might improve water quality. Alcom asked if both
chemical and mechanical methods would be regulated. Bintner
said his understanding is tha# the DNR does not distinguish
between methods, both are permitted. Bintner stated that the DNR
makes clear in its rules that the aquatic vegetation is valuable to
lake habitat and water quafity, but much of the changes will occur at
the watershed level with the upcoming TMDL. Marchessault
wondered how many people actually know that aquatic vegetation
is good for water clarity. Bintner agreed, saying that public
education is the biggest gap in watershed management. The LAC
discussed methods for helping get educational messages out to the
2
public, and possible educational messages themselves. O'keefe
said this topic was good to tackle in more depth at a future meeting.
Mankoski cited the "lake friendly" program as an example of a
coordinated education effort linked to a project support/delivery
system, which the watershed had run years ago. Mankowski said a
program like that should be revived and expanded. The Prior Lake
associated couple play a key stakeholder role in any educational
program. Jasan agreed that education is lacking and the Prior
Lake association would play a role. Jasan cited her participation in
"lake friendly" as a positive educational experience.
VII. ADJOURNMENT
ADJOURNMENT
THE MEETING WAS ADJOURNED AT 5:15 P.M.
Respectfully submitted,
Ross Bintner
Water Resources Engineer
3
--'--~-t-- '
Narrative
In 2009 The City of Prior Lake LAC prioritized educational methods and messages
during a January Stakeholder workshop and their February meeting. The following
recommendation will be used by staff to create and distribute educational information
during 2009.
Resources
Budget item 49420-203, $1,000 - NPDES educational brochures
Budget item 49420-203, $1,000 - LAC brochures/mailings
Budget item 49420-314, $875 - Watershed partners program
Staff time 49420-101, Water Resources Engineer
Staff time 49420-102, Temporary Employees Regular (water resources intern)
Messa~es
The attached prioritization form will be used as a guide, and is summarized below:
Points Topic Category Time
10 A. Wetlands Watershed Year round
9 B. Aquatic Vegetation Management In-Lake Spring
9 C. Reduced Fertilizer Use Watershed Spring
9 D. Reduced Pesticide/Herbicide Use Watershed Spring
8 E. Landscaping Shoreland Year round
8 F. Agricultural Watershed Year round
6 G. Buffer zones Shoreland Year round
5 H. Tree Planting / Reforestation Watershed Year round
5 J. Pet Waste Pickup Watershed Year round
5 K. No Littering / yard waste cleanup In-Lake & Watershed Year round
Messages will be grouped with other like activities, target audience, and planned method,
for example: All lawn-care practices that can be targeted at homeowners City-wide will
be grouped. Reduced fertilizer use, pesticidelherbicide use,
Initiatives & Methods
Direct contact, door hangers, mailed brochures, wavelength, cable channel / video, and
website/e-newsletter will all be utilized. The methods are numbered below.
Initiative Topic Methods Organizer/Educator Time
1 (B,G,E) Direct Contact City/SLA&PLA Spring
Brochures City/City Spring
2 (F) Direct Contact WD/WD Spring
3 (J,K) Door Hangers City/City Fall
Wavelength City/City Fall
4 (A,G) Door Hangers City/City Summer
5 (C,D,H) Wavelength City/City Spring
Website, e-newsletter City/City Spring
Cable channel, video City&WD/City Spring
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Part 1: Urban Watershed Forestry Manual
needed to remove larger volumes or potentially hazardous material.
Techniques for Reforesting Watersheds
Forest gains can be sharply increased through systematic reforestation of open lands throughout
the watershed. Techniques to increase watershed forest cover can be used to meet three of the
seven objectives of urban watershed forestry. Objective E, Plant Trees During
DevelopmentJRedevelopment, either requires or encourages developers to plant trees at
development sites, often in places not typically considered for reforestation. Objective F,
Reforest Public Land, primarily focuses on reforesting large parcels of public lands that have
already been developed, such as schools, parks, and highway and storm water rights-of-way.
Objective G, Reforest Private Land, includes techniques to encourage widespread tree planting
on feasible locations within individual yards or property that have already been developed.
Each technique is summarized in the ensuing section, including any relevant resources. More
guidance on implementing reforestation projects, including site preparation, species selection and
maintenance, is provided in Part 3 of this manual. Specific guidance on reforesring the following
land uses is provided in Chapter 4:
1. Highway rights-of-way (Figure 24) 5. Storm water dry ponds
2. Home lawns 6. Streams and shorelines
3. Parks 7. Utility corridors
4. Schools 8. Vacant lots
63
Figure 24. Highway and local road rights-of way provide opportunities for
reforestation on public land
Part 2: Conserving and Planting Trees at Development Sites
CHAPTER 4: TREE PLANTING ALONG STREETS
AND IN PARKING LOTS
This chapter provides guidance on planting trees along local streets and within parking lots at
new development sites and presents this guidance in fact sheet format. Pervious portions of a
development site that make good candidates for tree planting and are often overlooked include:
local road rights-of-way, landscaped islands in cul-de-sacs or tra~c circles, and parking lots.
Many local landscaping ordinances often require developers to plant street trees or to landscape a
certain percentage of every parking lot.
One of the most common features of highly desirable neighborhoods is the presence of large
street trees that form a canopy over the road. Many newer developments either do not
incorporate street trees or use small, ornamental trees or other types of vegetation within the
planting strip (Figure 35). Street trees are traditionally planted in a linear fashion along either
side of the road. Alternatives to this design include: planting trees in clusters along the side of the
road (Figure 36), planting trees within median strips (Figure 37) or planting trees in islands
located in cul-de-sacs or traffic circles (Figure 38). Each planting area has specific
considerations for incorporating trees to ensure adequate space is provided and to address
common concerns about visibility and conflicts with overhead wires or pavement (Figure 39).
67
Figure 35. Development with no street trees (top)
and msture trees that ~orm a canopy over the
street (bottom)
Urban Watershed Forestry Manual
.
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Figure 36. Non-linear street tree plantings (Source: Meyer, ~o date)
68
Figure 37. Excessively wide road with little vegetation (left) and trees planted in median
strip provide shade, slow traffic and make the street more attractive (right)
Figure 38. Typical cul-de-sac with no vegetation (left) and trees planted in cul-de-sac
island (right)
Part 2: Conserving and Planting Trees at Deve/opment Sites
Trees in parking lots reduce the urban heat island effect, remove pollutants, provide shade and
habitat for wildlife and increase the aesthetic value of the parking lot. However, many
commercial parking lots use a`cookie cutter' design that does not incorporate trees (Figure 40).
However, a parking lot can be a very harsh climate for a tree, so several important design
considerations are necessary.
Planting guidance for trees along streets and in parking lots is presented in the remainder of this
chapter in fact sheet format. Each fact sheet contains the following sections:
Description - brief description of the planting concept.
Pre- Planting Considerations - potential conflicts with planting trees at the site or unique
features that drive plant selection and planting procedures. Most of these considerations are
addressed in the Species Selection, Site Preparation, Planting Guidance or Maintenance sections.
Species Selection - desirable chazacteristics of species to be planted at the site. Part 3 of this
manual includes an urban tree database with tree and shrub species and their characteristics.
69
Figure 39. Trees that are planted in holes that are too small may eventuaily crack
nearby pavement (photo on left by Ed Gilman)
Figure 40. Parking lot with no landscaping (left) and a double-wide interior planting
strip that allows trees to share rooting space (right, photo by Ed Gilman)