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Home My WebLink AboutMemos and info re wetland buffer . . �1�I �a�� Christine Mattson From: Christine Mattson Sent: Wednesday, June 01, 2011 9:28 AM To: 'Mike Kayser' Subject: RE: Stone Bay of Orono Wetland Buffer Plan Mike The City received the project plan submitted from Wetland Habitat Restorations, Inc. The plan is consistent with City requirements and we approve proceeding as proposed. If I can be of further assistance, please advise. Christine Mattson Planning Assistant City of Orono 2750 Kelly Parkway Orono MN 55356 (physical address) PO Box 66 Crystal Bay MN 55323-0066 (mailing addressJ S' 952.249.4620 � 952.249.4616 � cmattson@ci.orono.mn.us � www.ci.orono.mn.us Office Hours(Monday, May 23rd to Friday, September 2nd): Monday-Thursday 7:30 am to 5:00 pm Friday 7:30 am to 11:30 am OUR OFFICE WILL BE CLOSED: Monday,July 4, 2011 From: Mike Kayser [mailto:MikeK@innovsys.com] Sent: Friday, May 27, 2011 12:33 PM To: Christine Mattson Subject: Stone Bay of Orono Wetland Buffer Plan To: Christine Mattson (Planning Assistant) The Home Owners Association is in receipt of your letter regarding our desire to remove noxious weeds including thistle located in the wetland buffer area between 769 Boulder Drive and 781 Boulder Drive. Buckthorn was removed in the spring of 2010 in the wetland area with Scott Oberaigner's knowledge and assistance in disposing of the buckthorn. We will not be removing any additional buckthorn with this project. A project plan is enclosed for your records and includes the following documents: 1) Quotation sheet with description of work and material to be performed by Wetland Habitat Restorations, Inc. 2) Wetland buffer impact sheet from the 781 Boulder Drive/783 Boulder Drive project that was completed in July 2009 under the direction of Bonestroo Engineering and the City of Orono. 3) Stone Bay Community map showing the location in our development. i The material being used to replace the noxious weeds and existing vegetation will be the same native seed specifications used for the 2009 project. That is why I have enclosed the wetland and buffer impact from that project. The Black Hills Spruce trees and Autumn Blaze Maple trees that will be planted are the same species that the homeowners planted in July 2009. There will be no change to the existing grade that is the same as the 2009 project. Any questions of interest can be directed to Scott Oberaigner or Mike Gaffron. They were very much involved with the homeowners in 2009 when the first stage of the project was completed. I am forwarding this email with signature and the 3 enclosed documents to you in the U.S. Postal mail. It should arrive by early next week. Let me know if you do not receive. Christine,thank you for your assistance in this matter. The HOA appreciates the City's assistance in improving the community. Mike Kayser 781 Boulder Drive Orono, MN 55356 952-476-5877 2 . RF�F� M�ke Ka ser VFD To: cmattson@ci.orono.mn.us L,�� 1?0�� Subject: Stone Bay of Orono Wetland Buffer Plan OF�RO Np To: Christine Mattson (Planning Assistant) The Home Owners Association is in receipt of your letter regarding our desire to remove noxious weeds including thistle located in the wetland buffer area between 769 Boulder Drive and 781 Boulder Drive. Buckthorn was removed in the spring of 2010 in the wetland a�ea with Scott Oberaigner's knowledge and assistance in disposing of the buckthorn. We will not be removing any additional buckthorn with this project. A project plan is enclosed for your records and includes the following documents: 1) Quotation sheet with description of work and material to be performed by Wettand Habitat Restorations, Inc. 2)Wetland buffer impact sheet from the 781 Boulder Drive/783 Boulder Drive project that was completed in July 2009 under the direction of Bonestroo Engineering and the City of Orono. 3)Stone Bay Community map showing the location in our development. The material being used to replace the noxious weeds and existing vegetation will be the same native seed specifications used for the 2009 project. That is why I have enclosed the wetland and buffer impact from that project. The Black Hills Spruce trees and Autumn Blaze Maple trees that will be planted are the same species that the homeowners planted in July 2009. There will be no change to the existing grade that is the same as the 2009 project. Any questions of interest can be directed to Scott Oberaigner or Mike Gaffron. They were very much involved with the homeowners in 2009 when the first stage of the project was completed. I am forwarding this email with signature and the 3 enclosed documents to you in the U.S. Postal mail. It should arrive by early next week. Let me know if you do not receive. Christine,thank you for your assistance in this matter. The HOA appreciates the City's assistance in improving the community. ��a��-�-� Mike Kayser� 781 Boulder Drive Orono, MN 55356 952-476-5877 1 Hi Mike, Hope this helps you ou� Quote#1. Original quote to continue wetlandJroadside seeding. Quote Shall include; - herbicide and removal of existing vegetation - tillage - seeding - erosion control blanket - use of irrigation equipment - one year maintenance ................................................................................................$1250.00 Quote#2. Trees to add to area#1. Black hills Spruce, 5 foot tall,balled and burlap............2@$285.00............$570.00 Autumn Blaze Maple............................................2@$350.00............$700.00 River Birch, 10 foot tall clump form..........................1 @225.00.........._....$225_00 Red Osier pogwood,Vaz. Cazdinal,#5 Container..._......1@35.00...................$35.00 (Bright red in winter) Tree and shrub prices include all installation costs and shredded mulch around stem. Quote#3. Continue wetland/roadside seeding proceeding from driveway at 769 Boulder Drive, west to northwest corner of properiy boundary,and proceeding from residence on the south,northerly into the bottom of the swale similaz to the first seeding. Quote shall include; - herbicide and removal of existing vegetation - tillage _ seeding - erosion con�ol blanket - use of urigation equipment - one year maintenance - 3' wide,4 inch deep shredded hardwood mulch boarder between residence and seeding area„ A weeci bazrier mat will placed under the mulch. - Trees and shrubs are not included in this quote but may be added. ................................................................................................$1650.00 ��i S �t.�O�-Q. W GC.S �J Y' l��/��2 Gl C�c�( .. 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E 1 / t � � � } �� i f � , ;B 1 �( � , '.\ �� . .i 1 ,,\ (� � \'l � 9 ,o ��' � � � � STONEBAY SIXTH ADDITION �--? ; i � '�� '� :�� --- \ __J ' l / `\ \ i i�_.�`" '� —� i i. �� - � '� �� , — � � .,' '� � �, ` � � J ��' . ; � �, ` ,.,` '-_ % - � ;. �� ^ ` ; ' ,; ,�, - '' --- '� i� � /. t, r _ �� - ,� ' � � ; �- � i . . - � ' a� `bno,� � 1 ,� � � }' O � 1 1 i'q��„� ,. 1� 3 � ,i' %,/ 1` Z '� �j '�, + L - '�'Q� �� ; '�1 ' � 1 � a � / / �. "'�� /�;' �. -- < � �� f'' J ' � � � ` ` '� � j � — � �. ,� .� �^ � �� ..! , )i � _ _ -� �"�- � ,, _ —,'.�. J � / � � '' ��. n /�' 'a ` \ STONEBAY THIRD �J „ �� ',�� \�/ ? ,S j \ � `! _ 6 \ / „ � STONEBAY - , .� .� ( , , ;`. � � , ss J9 \ s * �-\ a ♦ J � � ,ADDITION 4 �,�,°� f, 3 �,\ '� 3 � J �z 2 7J ' \ p O *� � G� �\ � � , 7 2 ��' ' �.� �. � `'�` ,o � � _ ' _J�_, � �� _ _ � _, '__� Jy ��._, f ;'S - -__ _�__ -. I . 8 2 J 6 S ♦ � `-�_�.. �� i� � _. ._,,"-. TH ADDITION � � . �3 37 �� Ol/7LOT K � � B 9 7p /7 t�� '� � 3s .�S � 3l -TO �8 21 ��T K JS-_ p9 � q ��~0 / �--_.' P 0� T� ,� 0 d.1� ,�0 OJ t , .� 0,�. O p ,� CITY of ORONO _ i Municipal Offices � i�� _ � Street Address: Mailing Address: "�'� �,'�,'�� &,<<�� ,ti 2750 Kelley Parkway P.O. Box 66 �yo�i�, ,i- ��w � ,� �,�� ;�� ,�/ Orono,NIN 55356 Crystal Bay,MN 55323-0066 f�,. �� May 20, 2011 Mike Kayser 781 Boulder Drive Long Lake, MN 55356 RE: Plantings in Buffer Area Thank you for contacting the City pertaining to the Home Owner Association's desire to remove thistle and buckthorn in the wetland buffer. The City does not require a permit to do the work, but a plan which meets the planting requirements outlined in City Code Section 78-1605(3) and a general scope of work must be submitted prior to starting the project. If you have any questions, I can be reached at cmattson(a�ci.orono.mn.us or 952-249-4620. Sincerely, CITY OF ORONO Iw ristine Mattson Planning Assistant Attachment: City Code Section 78-1605 Telephone (952)249-4600 • Fax(952) 249-4616 www.ci.orono.mn.us May 20, 2011 781 Boulder Drive Page 2 of 5 Sec. 78-1605.Wetland buffer areas. (a) This subsection establishes requirements for wetland buffer areas around protected wetlands. Buffer areas are necessary and beneficial to maintain the health of wetlands. Buffer areas protect the edge of wetlands from erosion while filtering sediment, chemicals and other nutrients from runoff that drains into wetlands. Buffer areas can improve the biological diversity and health of a wetland environment while reducing the adverse impacts of human activities. (b) Buffer areas regulated by this section are areas of vegetative cover that are upland of the wetland edge, and that occur in a natural condition or through restoration. Buffer areas consist of shrubbery and trees, native grasses and/or forbs that are not mowed, fertilized or manicured in any manner. Mowing, fertilizing, manicuring, or vegetation removal within a buffer area is not allowed unless the city has issued a permit for such activity in conjunction with an approved buffer management plan. (1) Acceptable buffer areas shall have the following qualities: a. A continuous dense layer of perennial grasses that have been uncultivated or unbroken for at least ten consecutive years, or b. An over story of trees and/or shrubs with at least 80 percent canopy closure that have been uncultivated or unbroken for at least ten consecutive years, or c. A mixture of the plant communities described in a. and b. above, which have been uncultivated or unbroken for at least ten consecutive years. (2) Unacceptable buffer areas have the following qualities, including but not limited to: a. Undesirable plant species (including but not limited to reed canary grass, common buckthorn, purple loosestrife, leafy spurge and noxious weeds), or b. Lacking a layer of organic thatch or duff, or c. Topography which tends to channelize the flow of surface runoff, or d. Is characteristicaliy unlikely to retain nutrients and sediment. (3) Buffer areas which have been broken or cultivated within the past ten consecutive years must be restored to a condition consistent with an acceptable buffer area defined in section 78-1605(b)(1), a restoration or landscape plan must be submitted to the planning director, which restoration shall include, replanting and maintaining according to each of the following guidelines: a. Buffer areas shall be planted with a seed mix containing 100 percent perennial native plant species, except for a one-time planting of an annual nurse or cover crop such as oats or rye. b. The seed mix to be used shall consist of at least 12 pounds pure live seed (PLS) per acre of native prairie grass seed and five pounds PLS per acre of native forbs. Native prairie grass and native forb mixes shall contain no fewer than four and five species respectively. c. The annual nurse or cover crop shall be applied at a rate of 20 pounds per acre. d. Native shrubs and or trees may be used in addition to forbs and grasses. Shrubs shall be distributed so as to provide a natural appearance and shall not be planted in rows. May 20, 2011 781 Boulder Drive Page 3 of 5 e. Native prairie grasses and forbs shall be planted by a qualified contractor. f. No fertilizer shall be used in establishing new buffer zones, except on highly disturbed sites when deemed necessary to establish acceptable buffer vegetation and then limited to amounts indicated by an accredited soil testing laboratory. g. All seeded areas shall be mulched immediately with clean straw at a rate of one and one- half tons per acre. Mulch shall be anchored with a disk or tackifier. h. Buffer areas (both natural and created), shall be protected by silt fence during construction and the fence shall remain in place until the area crop is established, and at that time the fence shali be removed. (c) Buffer area widths will be based on the wetiand protection strategies established in the Orono Surface Water Management Plan (SWMP) (December 2002). A protection classification has been assigned to each wetland in Orono based on the stormwater susceptibility and functional assessment for each wetland. The four protection classifications are described as follows: Protection Susceptibility Rating Description Classification "Preserve" Highly Susceptible Highly susceptible to both quantity and quality impacts from runoff; have the highest degree of rotection "Manage 1" Moderately Moderately Susceptible susceptible to quantity and quality impacts; protection is less stringent than Preserve, provides protection to maintain their characteristics "Manage 2" Slightiy Susceptible Less stringent protection than Manage 1 wetlands; maintenance of characteristics is desirable "Manage 3" Least Susceptible Wetlands are significantly degraded (e.g., cultivated or canary grass monotype) or lack of wetland characteristics; not typically impacted by runoff; no quantity and only limited quality treatment of runoff is re uired May 20, 2011 781 Boulder Drive Page 4 of 5 The protection classification for each wetland will be found on the "Wetland Management Classification Map & LisY' which is hereby adopted by reference, a copy of which shall be kept on file in the office of the city clerk and shall be available for public review during all normal office hours. The following are the required buffer area widths for each protection classification: Protection Width of Buffer Area Additional Protection Classification from Wetland Requirements (B = Boundary Bounce = Change in water level due to runoff event) (P = Phos horus "Preserve" 50 feet B: Maintain bounce at or below existing conditions P: Limit loadings to predevelopment loading (0.14 Lbs./Ac/Yr "Manage 1" 35 feet B: Maintain bounce at or below existing conditions plus 0.5 foot P: Limit loadings to predevelopment loadings times 2 (0.28 Lbs/Ac/Yr "Manage 2" 25 feet B: Maintain bounce at or below existing conditions plus 1.0 foot P: Limit concentration to predevelopment concentrations (200 b "Manage 3" 16.5 feet B: No quantity requirement P: Limit concentration to 225 b (d) In cases of new development or redevelopment the city shall require that vegetation in the wetland buffer be installed prior to the issuance of the certificate of occupancy. The city may waive this requirement in lieu of a cash escrow or letter of credit equai to 150 percent of the cost to install the required buffer. (e) The city may allow the disturbance of an existing buffer area during the course of construction activity. This disturbance must be kept to a minimum, soils must be decompacted to a level that will accommodate root growth, and the buffer area must be re-established as required by the city. The city will determine the amount of allowable disturbance. The city may require a cash escrow or letter of credit equai to 150 percent of the cost to re-establish the buffer to its original condition. (f) The city may require buffer area planting and maintenance when the city determines that there is inadequate vegetation in the buffer area to meet the intent of this section. The city may require a cash escrow or letter of credit equal to 150 percent of the estimated cost of the vegetation and installation. The escrow or letter of credit must be valid for up to two years and may be used by the city to replace any vegetation that dies. May 20, 2011 781 Boulder Drive Page 5 of 5 (g) The affected property owner or homeowner association that is responsible for the maintenance must: (1) Maintain and repair damage to buffer areas from such activities as mowing, cutting, grading or other prohibited activities, unless mowing is approved by the city as a buffer management plan. Permission must be obtained from the city before impiementing buffer management plans, which may include mowing, burning, and the use of herbicides. (2) Maintain only the permitted vegetation in the buffer area and must remove all noxious weeds and invasive, non-native species such as European buckthorn, upon obtaining a vegetation removal permit from the city in conjunction with an approved buffer management plan. (3) Ensure that all soil surfaces in the buffer area are planted with the permitted vegetation and that there is no open soil surface that may result in erosion. (4) Ensure that livestock or other domesticated animals which have the potential to permanently disturb the buffer area by compaction or vegetation removal be kept from entering the buffer area and wetland by a fence or other suitable means. (h) The final upslope edge of the buffer shall be provided to the city in a hard copy and in a CAD or GIS format in Hennepin County coordinates. (i) Golf course partial exemption. Public and private golf courses existing and in operation on the date of adoption of this article shall be allowed a partial exemption from buffer creation and maintenance requirements with regards to mowing or cutting buffer vegetation in areas subject to golf play, subject to the following: (1) At such time that this article requires establishment of a buffer, applicant shall submit a certificate of survey identifying the location, size and type of the wetland for which buffer exemption is requested. (2) Applicant shall submit a buffer management plan for city council approval, identifying those areas where exemption is requested and providing for alternative methods of wetland protection equivalent to an unmowed buffer. (Ord. No. 28 3rd series, § 1, 8-22-2005)