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HomeMy WebLinkAbout6.l. Rain Garden Installation and Maintenance Agreement - Danbury Way Improvement ProjectG:\ENGPROJ\453\Council Items\20151102 CC Rain Garden Agreement.docx EXECUTIVE SUMMARY City Council Meeting: November 2, 2015 AGENDA ITEM: Rain Garden Installation and Maintenance Agreement, Danbury Way Improvement Project, City Project 453 AGENDA SECTION: Consent PREPARED BY: Patrick Wrase, PE, Director of Public Works / City Engineer AGENDA NO. 6.l. ATTACHMENTS: Draft Rain Garden Installation and Maintenance Agreement APPROVED BY: ddj RECOMMENDED ACTION: Motion to Approve of Rain Garden Installation and Maintenance Agreement BACKGROUND The Danbury Way reconstruction project will take place in 2016. Several high quality wetlands are located within the project area. At the City Council Work Session held on October 20, 2015, Rain Gardens were presented to the Council as a method for enhanced protection of water quality within these wetlands. Council directed staff to contact project area residents to inquire about the interest and willingness to install Rain Gardens within the project area and indicated that the maintenance of the Rain Garden installations should be a responsibility of the property owner. Staff has prepared resident letters, a Rain Garden fact sheet and a draft Rain Garden Installation and Maintenance Agreement to distribute to project residents and is scheduling an open house to discuss Rain Gardens with the project area residents. The draft agreement is of primary importance as it establishes the maintenance requirements for the Rain Garden installations. The draft agreement as written proposes to have a City inspection of the Rain Garden once per year to certify that adequate maintenance is occurring. If the Rain Garden is being maintained, it is then capable of providing stormwater benefits to the downstream receiving waters. In recognition of this beneficial impact, the Agreement rewards the property owner by waiving the quarterly Storm Water Utility Fee for one year, until the subsequent inspection. If the Rain Garden is determined to have not received recommended maintenance, the quarterly Storm Water Utility fee would be reinstated on the resident’s utility bill. The quarterly Stormwater Utility Fee is $16.69 for a rural residential property. SUMMARY Staff has developed a draft agreement for the installation and maintenance of Rain Gardens within the Danbury Way reconstruction project. Council approval of the Agreement is necessary prior to contacting the residents to establish locations for the potential Rain Garden installations within the project. Rain Garden Maintenance Agreement THIS AGREEMENT is made the ______ day of __________, ______, by and between the City of Rosemount, (hereinafter “CITY”) and __________________________________ (hereinafter “OWNER”) of the property located at ____________________________________________, Rosemount, MN 55068. The Owner agrees to allow the City to construct a Rain Garden on or adjacent to the above referenced property. The Owner acknowledges that the purpose of the voluntary rain garden program is to manage and improve stormwater runoff from lawns, driveways, public streets, and other areas of stormwater runoff. I: CITY RESPONSIBILITIES The CITY hereby agrees as follows: 1) The City will construct the Rain Garden site as outlined in the construction plans and specifications during the Danbury Way Street Improvement Project. 2) The City will provide a 1-year warranty for the plants planted by the City. The City will replace original plants one time only if they fail to grow (as determined by the City) within one year from the time they are first planted. 3) On an annual basis, the City will evaluate the Rain Garden to determine compliance with the required maintenance activities, as outlined on the Rain Garden Information Fact Sheet, attached and incorporated into this Agreement as Exhibit. If the City Engineer deems the maintenance activities adequate, the City shall waive the Owner’s quarterly Storm Water Utility Fee for the upcoming year. 4) If the City Engineer determines that the maintenance is inadequate, the City will issue a letter to the Owner requesting that maintenance be performed on the Rain Garden within 30 days of the date of the letter. Upon re-inspection, if the City Engineer determines that the maintenance has been adequately performed, the City will waive the quarterly Storm Water Utility Fee for the upcoming year. If the Owner does not perform the maintenance, the City will reinstate the quarterly Storm Water Utility Fee for the following year. II: PROPERTY OWNER RESPONSIBILITIES The OWNER hereby agrees as follows: 1) Upon completion of the rain garden construction by the City, the Owner shall be solely responsible for the ownership and maintenance of the Rain Garden, as outlined in the Rain Garden Information Fact Sheet, attached hereto as Exhibit A. 2) The Owner agrees to allow the City reasonable access to the project area for construction, maintenance, evaluation, and monitoring of the project during installation and post completion. 2 3) The Owner agrees not to sue or bring any claims against the City relating to or arising out of the construction of the Rain Garden or any inspection or monitoring activities by City employees. Because the Owner is responsible for all post-construction maintenance, the Owner, not the City, is responsible for defending any claims brought by third parties relating to or arising out of the Owner’s maintenance activities. 4) Upon termination of this Agreement, the City shall have no ongoing obligations to the Property Owner relating to the Rain Garden; including, but not limited to, the following: the City shall not be required to restore the land to its original condition upon expiration or termination of this Agreement. III: MISCELLANEOUS 1) Term and Termination. This Agreement commences on the date written below, until terminated by either party with 30 days written notice. Additionally, failure of the Owner to perform maintenance, as determined by the City Engineer, for two consecutive years, will render this agreement terminated 2) Third Party Damages. The Owner will be responsible for repairing any damages to the Rain Garden caused by third parties. 3) Entire Agreement. This Agreement constitutes the entire agreement between the parties, and no other agreement prior to or contemporaneous with this Agreement shall be effective. Any amendment to this Agreement must be in writing and signed by both parties. PROPERTY OWNER(S): Print Name: Date: Print Name: Date: CITY OF ROSEMOUNT William H. Droste, Mayor Date: _________________________ ______________________________ Clarissa Hadler, City Clerk Date: _________________________ As p a r t o f t h e u p c o m i n g D a n b u r y W a y S t r e e t Im p r o v e m e n t P r o j e c t , y o u c o u l d c h o o s e t o h a v e a r a i n ga r d e n i n s t a l l e d ! Ra i n g a r d e n s p r o v i d e a b e n e f i t t o t h e w a t e r q u a l i t y f o r th e s u r r o u n d i n g w e t l a n d s a l o n g D a n b u r y W a y . T h i s pa c k e t w i l l g i v e y o u i n f o r m a t i o n a b o u t t h e u s e s o f a r a i n ga r d e n a n d a s c h e d u l e o f m a i n t e n a n c e t h a t r a i n g a r d e n ow n e r s s h o u l d u n d e r t a k e . Ra i n g a r d e n s a r e b e s t s u i t e d f o r f l a t o p e n a r e a s t h a t co l l e c t e n o u g h r u n o f f f r o m t h e a d j a c e n t i m p e r v i o u s su r f a c e s t o k e e p t h e r a i n g a r d e n t h r i v i n g . If y o u a r e i n t e r e s t e d i n c o n s t r u c t i n g a r a i n g a r d e n on y o u r p r o p e r t y i n c o n j u n c t i o n w i t h t h e s t r e e t im p r o v e m e n t s , p l e a s e c o n t a c t t h e E n g i n e e r i n g De p a r t m e n t a t 65 1 - 3 2 2 - 2 0 2 2 to determine if your pr o p e r t y i s s u i t a b l e . Wh a t i s a r a i n g a r d e n ? A r a i n g a r d e n i s a la n d s c a p e d d e p r e s s i o n t h a t i s d e s i g n e d t o c o l l e c t wa t e r r u n o f f f r o m i m p e r v i o u s s u r f a c e s s u c h a s ro o f s , d r i v e w a y s , a n d s t r e e t s . R a i n g a r d e n s c a n co n t a i n s h r u b s , g r a s s e s , a n d p e r e n n i a l f l o w e r s de s i g n e d t o t o l e r a t e p e r i o d s o f w e t a n d s a t u r a t e d so i l s , a s w e l l a s t i m e s o f d r o u g h t . T h e s e p l a n t s gr o w d e e p r o o t s y s t e m s t h a t p r o m o t e w a t e r in f i l t r a t i o n i n t o t h e s o i l a n d g r o u n d w a t e r r e c h a r g e . Be c a u s e s o m e s e d i m e n t c o m e s w i t h t h e w a t e r th e g a r d e n c o l l e c t s , r o u t i n e m a i n t e n a n c e w i l l b e ne c e s s a r y t o r e m o v e s e d i m e n t o r d e b r i s , a n d t o ke e p t h e r o o t z o n e c l e a r . Ho w d o e s a r a i n g a r d e n w o r k ? A b o u l e v a r d ra i n g a r d e n i s c o n s t r u c t e d a d j a c e n t t o t h e s t r e e t . A c u r b c u t i s p l a c e d a l o n g t h e s t r e e t c u r b t o d i v e r t so m e o f t h e w a t e r f l o w i n g d o w n t h e g u t t e r l i n e s o it c a n e n t e r t h e r a i n g a r d e n . T h i s a l l o w s t h e w a t e r to b e c o l l e c t e d a n d p r e - t r e a t e d b y t h e r a i n g a r d e n be f o r e i t e n t e r s i n t o t h e s u r r o u n d i n g w e t l a n d s . Th e w a t e r e n t e r s t h e r a i n g a r d e n a n d p e r c o l a t e s th r o u g h e n g i n e e r e d s o i l s , l e a v i n g b e h i n d s e d i m e n t an d p o l l u t a n t s . T h e p l a n t s w i l l u t i l i z e t h e w a t e r fo r n u t r i e n t s w h i l e b r e a k i n g d o w n s o m e o f t h e po l l u t a n t s . I f p u b l i c s t o r m w a t e r f a c i l i t i e s a r e av a i l a b l e i n t h e a r e a , a d r a i n t i l e s y s t e m w i l l b e in s t a l l e d b e n e a t h t h e r a i n g a r d e n t o d r a i n d o w n th e g a r d e n d u r i n g h i g h r a i n f a l l e v e n t s , b u t t h e wa t e r w i l l b e p r e - t r e a t e d a n d c l e a n s e d b e f o r e i t en t e r s t h e s t o r m s e w e r s y s t e m . Wh o w i l l d e s i g n m y r a i n g a r d e n a n d h o w wi l l i t w o r k ? A L a n d s c a p e A r c h i t e c t w i l l w o r k w i t h ea c h i n d i v i d u a l h o m e o w n e r t o c h o o s e a r a i n g a r d e n de s i g n t h a t w o r k s b e s t w i t h t h e i r p a r t i c u l a r n e e d s . Pl a n t s e l e c t i o n w i l l b e b a s e d o n t h e l o c a t i o n o f t h e ra i n g a r d e n , t h e a m o u n t o f s u n l i g h t t h a t i t w i l l r e c e i v e , th e m a i n t e n a n c e d e m a n d s t h a t t h e h o m e o w n e r c a n ac c o m m o d a t e , a n d t h e “ l o o k ” t h a t t h e h o m e o w n e r de s i r e s . Du r i n g t h e f i r s t c o u p l e o f y e a r s a f t e r i m p l e m e n t a t i o n , th e p l a n t i n g b e d w i l l l o o k s o m e w h a t s p a r s e – D o n ’ t wo r r y . R i g h t n o w t h e p l a n t s a r e e x p e n d i n g a l l o f th e i r e n e r g y a n d n u t r i e n t s i n t o p r o m o t i n g t h e i r r o o t gr o w t h . B y t h e t h i r d y e a r t h e g a r d e n w i l l l o o k f i l l e d i n . Wh a t m a i n t e n a n c e i s n e e d e d a n d w h o i s re s p o n s i b l e ? Th e i n d i v i d u a l h o m e o w n e r w i l l b e re s p o n s i b l e f o r t h e o n g o i n g m a i n t e n a n c e o f t h e r a i n ga r d e n . T h e f i r s t y e a r o r t w o o f m a i n t e n a n c e i s t h e mo s t i m p o r t a n t t o e s t a b l i s h i n g h e a l t h y p l a n t s , b y t h e th i r d y e a r m a i n t e n a n c e i s u s u a l l y l i g h t . Fr e q u e n t l y A s k e d Q u e s t i o n s V o l u n t a r y Vo l u n t a r y R a i n G a r d e n P r o g r a m Ra i n G a r d e n P r o g r a m The city will be funding and constructing the rain gardens. Upon completion of the rain garden construction, ownership and maintenance of the rain garden will be the sole responsibility of the homeowner. Be l o w i s a s a m p l e m a i n t e n a n c e p l a n f o r a r a i n g a r d e n : Wa t e r t h e G a r d e n ! Wh e n a r a i n g a r d e n is f i r s t c o n s t r u c t e d t h e p l a n t s w i l l b e s m a l l an d t h e i r r o o t s y s t e m w i l l n e e d s u f f i c i e n t t i m e to d e v e l o p b e f o r e i t c a n s u r v i v e o n i t s o w n . Wa t e r i n g w i l l h e l p t h e y o u n g p l a n t s t o b e c o m e es t a b l i s h e d . D u r i n g t h e f i r s t w e e k o r t w o , ho m e o w n e r s s h o u l d w a t e r t h e g a r d e n d a i l y i f it d o e s n ’ t r a i n . D u r i n g t h e f i r s t t h r e e m o n t h s th e r a i n g a r d e n s w i l l n e e d a b o u t 1 - i n c h o f wa t e r p e r w e e k . K e e p i n m i n d t h a t e n g i n e e r e d so i l s t y p i c a l l y d r a i n q u i c k l y s o b e s u r e t o f u l l y sa t u r a t e t h e e n t i r e g a r d e n e a c h t i m e y o u w a t e r . Du r i n g t h e s e c o n d y e a r , t h e r a i n g a r d e n s h o u l d no t n e e d a s m u c h w a t e r i n g . M o n i t o r t h e r a i n ga r d e n , a n d i f t h e p l a n t s l o o k s t r e s s e d d u r i n g ti m e s o f d r o u g h t , s o a k t h e p l a n t s a b o u t o n c e p e r we e k u n t i l t h e d r o u g h t b r e a k s . A f t e r t h e s e c o n d ye a r , t h e p l a n t s w i l l b e f a i r l y e s t a b l i s h e d a n d w i l l ne e d v e r y l i t t l e s u p p l e m e n t a l w a t e r . I n t i m e s o f se v e r e o r o n g o i n g d r o u g h t , i t i s c o m m o n f o r ra i n g a r d e n s t o g o d o r m a n t . H o w e v e r , y o u c a n ch o o s e t o w a t e r t h e g a r d e n d u r i n g e x t e n d e d d r y pe r i o d s t o k e e p i t g r e e n a n d p r o d u c t i v e . We e d t h e G a r d e n ! We e d i n g t h e g a r d e n w i l l re d u c e t h e c o m p e t i t i o n f o r l i g h t a n d w a t e r , a n d wi l l h e l p t o m a i n t a i n a n a e s t h e t i c a l l y p l e a s i n g ga r d e n . W e e d i n g i s n e e d e d m o n t h l y i n t h e f i r s t ye a r o r t w o . B y y e a r t h r e e , t h e r a i n g a r d e n s w i l l on l y n e e d w e e d i n g a b o u t 2 - 3 t i m e s p e r s e a s o n . Af t e r a f e w y e a r s y o u m a y n o t i c e b u i l d u p o f th e o l d p l a n t g r o w t h a t t h e b a s e o f t h e p l a n t . Ho m e o w n e r s c a n c u t b a c k t h e p l a n t s i n e i t h e r th e s p r i n g o r f a l l t o r e m o v e t h i s g r o w t h , b u t le a v i n g m a t e r i a l s i n t h e g a r d e n u n t i l s p r i n g h e l p s in s u l a t e r o o t s a n d c a n p r o v i d e s e e d s f o r b i r d s du r i n g t h e w i n t e r . D e a d m a t e r i a l r e m o v e d fr o m t h e g a r d e n c a n b e c o m p o s t e d w i t h o t h e r ya r d a n d g a r d e n w a s t e . W i t h t i m e , y o u m a y no t i c e t h a t s o m e p l a n t s w i l l f l o u r i s h a n d s t a r t t o mu l t i p l e m o r e t h a n y o u m a y d e s i r e . T o c o n t r o l ov e r c r o w d i n g , y o u c a n d i v i d e t h e p l a n t s a s ne c e s s a r y . Mu l c h t h e G a r d e n ! A good bed of mulch ma t e r i a l w i l l k e e p t h e g a r d e n f r e e o f m a n y we e d s , e s p e c i a l l y a s t h e w o o d m u c h b r e a k s do w n i n t o t h e s o i l . F r e s h e n u p t h e m u l c h b y ad d i n g m a t e r i a l a n d h a n d t i l l i n g e a c h s p r i n g . Mu l c h s h o u l d b e a b o u t 3 t o 4 i n c h e s d e e p . Av o i d p l a c i n g t o o m u c h m u l c h , a n d p u l l t h e mu l c h a w a y f r o m t h e s t e m s / b a s e o f t h e p l a n t s , as t h i s c a n c a u s e m o r e d a m a g e t h a n g o o d t o t h e pl a n t . I n t h e s p r i n g o r s u m m e r , y o u m a y a l s o ne e d t o r e m o v e s e d i m e n t t h a t h a s c o l l e c t e d in t h e b o t t o m o f t h e r a i n g a r d e n . R a k e o u t t h e af f e c t e d a r e a a n d r e p l a c e a n y l o s t m u l c h ; t h i s wi l l m a i n t a i n t h e i n f i l t r a t i o n c a p a c i t y o f t h e ga r d e n a n d k e e p y o u r p l a n t s h e a l t h y . Sa m p l e M a i n t e n a n c e P l a n o n t ro l as