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7.b)2) Draft Local Water Management Plan-June 2012 DRAFT PLAN L O CA L WA TER MA�V'�4 GL MEN T PLA N ADOPTION DATE: - � �` -�- �---� _ ��- � ' � , � , ; �' P �. p •, � ' �: '�� F. � �s.��t�rf(� � , .. � Ii' � . ..:� 4,� 4� � �� . �' . �., � 4`.'Y�` ; . '�I � . . -�'� ��.ta �. . - � � . .. � ....... , � _. .� I � � - � � i�,:� �w.w�;� �w I "' .y � ' r� � � '��'"` , ',�. � ,�� ,.� � � , „ , � . 1 '' : � " ` i �t� . � � �i 7�i��l�'.�f�j �ip:�sr;+�, �4��r:�'� �!• �, t i,: '�� ., � r , �f i �, '{'� �. _ . �� t ;� .. t �'w �q°' i J� . � I ��;i � �� I �� i" .i J��J � �4� �J� . � �'"+_"�a.;�" ,:'� I i�'+��J�'1��t �� - ^ 1�' . !�I I'l��!�.;�1�jf City of Scandia, Minnesota June 2012 Project No. 15045.000 � »:.�,�+-_.l�y �.��;.� � �L.�1'll�i 1�� TKD.A � �. TLo right Ume.Tha tisLt peaple.The ri�ht cunpaq}! Draft Plan LOCAL WATER MANAGEMENT PLAN City of Scandia, Minnesota TABLE OF CONTENTS l. EXECUTIVE SUMMARY........................................................................................1 If. LOCAL WATER MANAGEMENT PLAN PURPOSE ..............................................2 lll. LAND AND WATER RESOURCE INVENTORY ....................................................3 IV. ASSESSMENT OF ISSUES....................................................••--�----....................47 V. GOALS, POLICIES AND STRATEGIES ..............................................................51 VI. IMPLEMENTATION PLAN .......................�--..................................._.....................61 VII. AMENDMENT PROCEDURES............................................................................70 List of Fiqures Figure1.....................................................................................................................�----..6 Figure3....................................................................................�--.................................._12 Figure4..........................................................................................................................16 Figure5..........................................................................................................................18 �igure 6..........................................................................................................................22 Figure7...............................................................................•---�--...............................-----23 Figure8.............�---�--..__.......................................................-�--�--....................................24 Figure9..........................................................................................................................27 Figure10........................................................................................................................28 Figure '11........................................................................�---............................................32 Figure 'l2........................................................................�-�---......................................._..33 Figure13......................................�---�--...........................................,...............................39 Attachments WCD Agreement related to wetlands technical assistance Erosion and sediment control ordinance Capital Improvement Plan Scandia Lacal Water Management Plan Draft I June 2012 Draft Plan LOCAL WATER MANAGEMENT P�AN City of Scandia, Minnesota I. EXECUTIVE SUMMARY This Local Water Management Plan (LWMP) for the City of Scandia contains the elements that Minnesota Statutes 103B and Minnesata Rules 8410 require in local water management plans for communities that are not designated as an MS4 (Municipal Separate Storm Sewer Permit) community. This LWMP includes the following sections: • The Purpose briefly describes the purpose of the plan. • The Land and Wa#er Resource Inventory summariZes availabie data regarding the existing and proposed physical environment and land use in Scandia and the existing planning and regulatory framework for water management. � The Existing Water Resource Planning and Regulatory Framework section summarizes the surface water and groundwater planning efforts to date in Scandia. • Water Resource Related Agreements describes the City's existing and proposed water resource-related agreernents with other units of government. • The Assessment of Issues sectian describes current problems affecting water resources within the City. • The Goals, Policies, and Strategies section lists the goals, policies, and strategies adopted to address surface water management issues in the City. • The Implementation section summarizes the prajects planned to implement goals and policies. It includes a Capital Improvement Plan. • The Amendment Procedures outlines the process by which plan amendments will be incorporated into the pEan. • The Plan also includes Figures and Attachments tha# support the analysis. This LWMP updates the plan that was included in the City's 2008 Comprehensive Plan Update, and will be applicable untif the City is required to update its plan for the next Comprehensive Plan Update. Periodic amendments may also be required to Scandia Local Water Management Plan 1 May 2012 incorporate changes in local policies as well as changes to the Watershed Management Plans of the watersheds with jurisdiction in the City. 11. LOCAL WATER MANAGEMENT PLAN PURPOSE Scandia's Local Water Management Plan (LWMP) has been prepared to guide the City in conserving, protecting, managing, and improving its surface water resources. The plan meets the requirements described in Minnesota Statutes 103B and Minnesota Rules 8410. The plan is also consistent with the goals anci policies of the Metropolitan Councii's Water Resources Management Policy Plan and the three watershed management organizations with jurisdiction in the City: the Carnelian Marine St. Croix Watershed District (LMSCWD), the Comfort Lake-Forest Lake Watershed District {CLFLWD), and the Rice Creek Watershed District (RCWD). Scandia Local Water Management Plan 2 May 2012 III. LAND AND WATER RESOURCE INVENTORY A. I ntroduction Scandia's landscape is a mosaic of agricultural lands, residential and commerc[al development, and areas with remnant natura! vegetative cover. The purpose of this section is to summarize available information regarding land use and natural resources in the City of Scandia and discuss the relationship between water resources and land use planning. The section is organized into five major topic areas: • Land Use • Water Resources • Gealogy and Topography � Natural Areas o Existing Water Resource Planning Framewark Additiona! information on land and water resources within the city af Scandia can be found in the watershed management plans and related natura! resource management plans o# the watershed managerr�ent organizations with jurisdiction in the City and the City's Comprehensive Plan. The plans include the following additional information on land and water resources: The plans are available at Scandia City Hall and from the following sources: Carnelian Marine St. Croix Watershed District CMSCWD 2U10 Watershed Management Pian An electronic copy of the plan is available on the District website. Comfort-Lake Forest Lake Watershed District CLFL Watershed Management Pfan Update-2011 The plan is available online at the District website. Rice Creek Watershed District 201U RCWD Watershed Management Plan The plan is available online at the District website. Scandia Local Water Management Plan 3 May 2012 City of Scandia 2008-2030 Comprehensive Plan Scandia Development Code (2011) and Ordinances The comprehensive plan, development code, and ordinances are available online at the City's website. B. Land Use Current land uses in Scandia are shown on Figure 1. Agriculture and single-family residential uses occupy the majority of the land area in the city. Open water, parks and open space also occupy a significant area in Scandia. The 2030 Comprehensive Plan identifies the major land uses in the community and their proportion of the City's iand area, including the following: • Agriculture (39%}—this category includes traditional row crop and animal agriculture, as well as a variety of specialized operations such as nurseries, goat dairies, and produce farming. • Residential uses (36%�a variety of residential land use types exist in Scandia. Single-family uses predominate. Residential uses in Scandia include: • Single-family residential uses—lot sizes range from 8,000 square feet in the Village center to 4Q acres or more. • Multi-family residential (less #han 1%}—the only significant multifamily developmen# is Oakhill Cottages in the Village Center. • Seasonal residential—many shoreland residential properties eraund (akes or the St. Croix River were originally built as seasonal residences. Around 160 parcels are still classified as seasonal. � Commercial, Industrial and Extractive uses (1.8%)—Commerciaf and industrial land uses are concentrated in the Village center and in Scandia Plaza on Scandia Trail. A small number of commercial properties are lacated on major roadways in the ruraf area. Scandia has firvo active gravel mining operations, and a third abandoned gravel mine that is proposed for new mining activity in the future_ Scandia �ocal Water Management Plan 4 May 2012 • Institutional uses, civic and parks and open space (8.7%)—this ca#egory inciudes religious and public facilities, as well as local, county and state parks. It also includes floodplain and riparian fands within the St. Croix National Scenic River, the Rustrum Wildlife Management Area, and Fa{I Creek Scientific and Natural Area. • Open Water (12.3%�includes lakes, streams and wetlands. � Roads and utilities (.3%) During the past two decades, the propartion af land area devoted to residential uses has gradually increased, while the area devoted to agriculture has decreased. Figure 2 is the zoning map that indicates the current zoning districts in Scandia. The City adopted the zoning map as part of its development code update in 2011, based on the 2p30 Comprehensive Plan Update. Scandia Local Water Management P1an 5 May 2412 Figure 1 Existing Land Use sc�� " ,�,_ CHISAGO COUNTY� 240th St N �_,., � �` '-�-'.... .. ... ..... . .,..._�.. .. ,. . . . . ... ._. . ._ ..�, . ' . - ' . . . .. _ . .. ... . ..... .. ., � �. '. ( NWSHINGTON COUNTY �. � _ � . . � I � �� '.ze Lake � i { . r I � 'l . 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NISAGO COUNT 2�{Olh Si N I �:--.,., :� ,: , �� o�Jr1 . , SHINGTON G � � �� `_ i %" . � � �. '�i;�ta � . � l �f L / t F 4 __ °° � f' \ / � a 1 � ` % < < � S��i , i J�.�,, o } : �� 'N'?kPr�Lrx,. ��:- OIhSW p � �� `,' Z 4e � , h St N� �, ^�- � �'9� � . . � �i-� . f Z .�. �, ` ),��.�,. �.. � ��/. IP;. w�`'-�Crd� � � �� J"'`e v� i � � � ~o- ��` � _Z : � ° .=�' _ . ' o i\("'7t. �>� : � '.� J r ;. ,�'��,. � ! �6 �m � ;-� f�' d. ! i� � t /.. . . .i r. .I t � �� , ' / _ �c+.- � ;C � '��.1� ��}� ' � O �' C� � 2�}� , .�27 $1Ni:: � �J m o. J '^ na �r' ��,;rtrtr�nt�/R�['.,:;�. ,��\% � --.._-� _ c .. 't %.��y �. C� o E � � . . ^ � �� . " Scaixlia Tr N '~� ----- g - !. e �� Z ' :�� , � - 1 , �i �� '� �. �L \ el,•rY 1 _� l . �r �! 1� g�,�� T 'r� �_~� � _ ,.. . � 20 � a 4. _. �� l ' � z ' .. d hu�R � � �Q,c� �j �'a � t t: :; . " - °�ti '2'- ': ,D � ��. N Ldko�. � :�. . c ° ,l � / .�� ! � . c i�'. y � : a � i�71 f,FJ .��. . � `1 � i�� . < . , i t g.. .�:�yi. :, +"� 1.� �ti .. _':, ' •a �-- l:r�err. ' ��o... . � i � as. rF1 i ' . � �. 1 i' �p l v� �` � , ; � � � I f �; � �;�u��< � � , � � � � :F ? � � ` > ��;: ., �k«: \j Q`Z : �. }: ��.s,�, , � ,. ,� , �:� , �� . --- _ , � :C� �� ) E�gMr:nnalakC ��•f Z ,�� -_.7..� ti � . ��a�� i ,1`� i � iash& � , '.,. �•� ��i . F ; .� � ', _.:.��..a. . . `,. ... .� .�y.._ �� r• ` 1 �f> i� �' _q 4 � � �_ � \ �i,� `� .-- - ` �i .T�``. :� _:...� , ..,_,, -.��,... tr- 8 ' ` � �.K. �� svwn 'm "/ ^ . ' } ,'��_ t��m st � o/ „ r � u,si N z� D / l Z � �•�� t�.;.� � \J � � Legend N �_ � Agriculture-Core(AG C) Saint Croix River Overlay District W�E Agriculture Preserves(AP) � Mining Overlay District S General Rural(GR) [_� Shoreland Overlay District 4,000 ��>x� Village Neighborhood(VN) OFeet � I Rural Commercial(R COMM) Village Mixed Use A(VMU A) pata srnirces: � Village Mixed Use(VMU B) hletropolitan Council, hIN DNR,Wasl�inyton � Industrial Park(IP) county,c�ey or sca�,d�a Scandia Local Water Management Plan 7 May 2012 C. Water Resources This section of the local water management plan describes the water resources in the City of Scandia. It includes information regarding the following: • Public Wafers Inventary • Shoreland Management l.ake Classifications • Floodplain Areas • Water Quality Manitaring • Impaired Waters • Watershed Boundaries Public Waters inventarv Public Waters are all water basins and watercourses thaf ineet the criteria for designation as "public waters" set forth in Minnesota Statutes, Section 103G.005, Subd. 15. Public Waters are identified on the Minnesota DNR's Public Water Inventory maps and lists authorized by Minnesota Statutes, Section 1p3G.201. Pub(ic Waters wetlands include all type 3, type 4, and type 5 wetlands (as defined in U.S. Fish and Wildlife Service Circular No. 39, 1971 edition) that are 10 acres or more in size in unincorporated areas or 2.5 acres or more in size in incorporated areas, as well as lakes and s#reams. Thirty-nine water bodies within Scandia are classified as Public Waters in accordance with the guidelines of the Minnesota DNR. The Public Waters within Scandia range in size from 2 acres to nearly 2,000 acres of water surface and include several water bodies of regional significance. The table below provides information on aA of the Public Waters in Scandia and their acreage. The table includes the Public Waters inventory number, and the shoreland classification information for each of the water bodies. Water bodies of regional significance include the St. Croix River, a federally-designated National Scenic Riverway, which forms the eastern border of the City. Big Marine Lake, in the southwestern portion of the city, is the second largest lake in Washington County. Scandia Local Water Management Plan 8 May 2012 Existing and future development in areas surrounding public waters should be carefuliy managed and planned to prevent adverse impacts ta water resources. Name Public Waters Shareland Management Acres Inventor ID Classification Alice Lake 82-287 P Nafural Environment 26.3 Bi Marine Lake 82-052 P Recrea#ional Devela ment 1902.59 Bone Lake 82-054 P Recreational Development 2�8.47 Clear L.ake 82-078 W Natural Environment 35.28 Falls Creek 1.6.7.12 -- Tributa -- Fish Lake 82-064 P Natural Environmen# 64.99 German Lake 82-056 P � Natural Environment 151.20 Goose Lake 82-059 P Natural Environmen# 84.04 S Ivan Lake 82-080 P Recreational Develo ment 108.25 Ha Lake 82-065 P Natural Environmen# 59.32 Lon Lake 82-068 P Natural Environment 46.12 Nielson Lake 82-055 W Natural Environment 49.65 Pitzl Pond 82-282 W Nafural Environment 36.19 Rasmussen Pond 82-070 W Natural Environment 18.24 Sand Lake 82-067 P Natural Environment 47.41 Sea Lake 82-053 W Nafural Environmen# 51.67 St. Croix River -- Wild and Scenic River - Washin ton Lake 82-169 W - 22.34 White Rock Lake 82-072 P Natural Environment 80.88 Wo'towicz Pond 82-058 W Natural Environment 16.80 Unnamed 82-057 W Natural Environment 27.52 Unnamed 82-060 W Natural Environment 26.26 Unnamed 82-061 W Natural Environment 14,37 Unnamed 82-062 W Natural Environrnent 17,44 Unnamed 82-066 W Natural Environmen# 33.75 Unnamed 82-081 W -- 41.29 Unnamed 82-171 W -- 14.54 Unnamed 82-172 W -- 26.95 Unnamed 82-173 W -- 10.49 Unnamed 82-174 W -- 26.95 Unnamed 82-210 W -- 25.12 Unnamed 82-211 W -- 10.84 Unnamed 82-212 W -- 17.46 Unnamed 82-213 W -- 7.45 Unnamed 82-280 W -- 19.48 Unnamed 82-281 W -- 7.46 Unnamed 82-283 P -- 8.46 Unnamed 82-284 P -- 2.08 Unnamed 82-285 P -- 14.73 Unnamed 82-286 P -- 5.17 Scandia Local Water Management Plan 9 May 2�12 Shareland Management The Minnesota Department of Natural Resources' (DNR} Shoreland Management Program has classified water bodies and created requirements and development standards that are applied to classes of lakes, wetlands and streams found in Minnesota. Lakes and wetlands are divided into the following classes: � Natural Environment Lakes usually have less #han 150 total acres, less than 60 acres per mile of shareline, and less than three dwellings per mile of shoreline. They rnay have some winte� kill of fish; may have shallow, swampy shoreline; and are less thar� 15 feet deep. • Recreational Development Lakes usuaily have between 60 and 225 acres of water per mile of shoreline, between 3 and 25 dwellings per mile of shoreline, and are more than 15 feet deep. • Generat Development Lakes usually have more than 225 acres of water per mile of shoreline and 25 dwellings per mile of shoreline, and are more than 15 feet deep. {Note: no lakes in Scandia have been given this classi#ication) Classifications for the lakes within the City of Scandia are shown on Figure 3 - Lake Classi�cations, Sf�oreland, and Floodplain Areas, and listed on the preceding table. The Shoreland Management System also includes rivers, streams and their tributaries. The St. Croix River is classified as a Wild and Scenic River and Falls Creek is classified as a Tributary Stream. While the lakes and streams in Scandia are one of the reasons that the city is an attractive place to live, residential development and agricultural activities on these lakes and in tributary watersheds can have detrimental effects an water quality and wildlife habitat. ln order to protect lakes from potential negative impacts, the State of Minnesota requires cities and counties ta adopt a shoreland management ardinance that p�ovides for the orderly develaprnent and protection of shorelands. When New Scandia Township incorporated as the City o€ Scandia, the city developed and adopted its own Shoreland Management Ordinance in 2007. The Shorefand Management Ordinance appliss to land Iocated within the following distances fram lakes that have been given a lake Scandia Local Water Management Plan 10 May 2012 shoreland management classification or rivers and streams that are considered public waters: • 1,000 feet from the ordinary high water level of a lake, pond, or flowage • 300 feet from a river or stream, or the landward extent of a floodplain designated by ordinance on a river or stream, whichever is greater. Shoreland Areas wiihin Scandia are shown on Figure 3 - Lake Classifications, Shoreland, and Floodplain Areas. Floodplain Areas The flood plains shown on Figure 3 were digitized from the Federal Emergency Management Agency Flood Insurance Rate Map for Washington County. Floodplains were delineated for the St. Croix River and some of the larger lakes in the City of Scandia including Big Marine Lake, l.ong Lake, Fish Lake and Hay Lake. Figure 3 shows the extent of the 100-year and 500-year flood plains for water bodies in the City of Scandia. Chapter 6 of the Development Code is the Floodplain Ordinance that regulates land use and development standards in floodplain areas. The City recently amended the o�dinance in 2010. Lower St. Croix River Bluffland and Shoreland Manaqement Requlations The City has adopted the Washington County Development Code regulations by reference that address bluffland and shoreland management within the Lower St. Croix Rive rway. Scandia Local Water Management Plan 11 May 2012 Figure 3 Lake Classifications, Shoreland, and Floodplain Areas . pp� I cHisncoco�Nrv� �aon,s�r� -- - . _�_.. � --- _ . --• -�- --- --- ---^-, - --- -�T i- P�E9.1 � W15MNGTONCOUN�Y� I �� I I E7�1]<11' B�5]4Y i P:.��+ fl�tJ:1Y Z P7.f'."�t•: ..- �' ez-�e iv � � ' / cz nnv , ti• : es-se�v 30�h St N � .+ I - �� z �'c0 c ---� . 2 y '7i�, .P � I. � >_ � Q �� 97 5:; N. � �[�. I a � � � � z �� ' I c` o _ I � � � ,. / B1�59 �' i £ I [181hSIN � Y O"�� u o 't"��O < � �j z ! D1.56 �l,___i � /, o> ��, ! � � �� `�r x e:ea�,�.�• � � Sr.andia Tr N � — — I - � �lZ-61 W ;. e�.eaw � �,�_. �c'yy. � � y 5� � � e�•eov � �,r m �� •�0 g Je.r<�i U .'i. , �� a Y ,�4yI/ _. � �,. ,<> 'ki. � ea a z o 81.Bit:' ,Ta'u . .±.'71oW � W m � aalenv P �, a 8 m Bi 65 P � ea aeow � a, `.'�7�5�. / I f7�7vW B2-67P � Y , � �1 I . .. ,.,_. ��+$ B7-6B P L ��.. ..., .�, m ez:r,� I a•� ' i c P2 1tlt I :'JI I,. ��rL�� ~ IHSIM1S N Q S=�7E]P rl '• J . � � ........ . ..... ... � !2 I17Y/ � 1-'...... p:-785P � a ! � � ef ar„. i ! < .�-_._.� .:- i.;::�: . . , r c �_'� .c .9b�.1 .. .� � I q Z ...-.. :. . .. _ _ .: ...�nim'(r • U ; '�:r:; , -ni,s�N , 3 4 ��-:�t – 2 `c � ` 3 `7 � i I Y � Legend N FEMA Floodplain Lake Shoreland Classffication Shoreland W�E 100 yr. Floodplain � Natural Environment ' �-� Streams S 500 yr. Floodplain � Recreational Development wettands Da[a Sources: P1N DfyR � 14etiopulitan Council SCANDIA � Scandia Local Water Management Plan 12 May 2012 Water Quality Monitorinq In 2008 and 2009, eleven lakes in the City of Scandia were monitored as part of the Metropolitan Council's Citizen-Assisted Monitoring Program (CAMP). Monitoring results ar� reported periodically, with the current report released in 2010 and the previous report released in 2006. Lakes are sampled every two weeks from mid-April through mid-October. During each sampling event, temperature, dissolved oxygen, and Secchi depth transparency are measured and recorded. A surtace water sample is also collected and analyzed for total phosphorus, total Kjeldahl nitrogen, and chlorophyll- a. Total phosphorus is a key measure of lake nutrients, chlorophyll-a is a measure of algae abundance, and Secchi depth transparency is a measure of water clarity. Figure 4 - Water Quality and Impaired Waters, shows the 2008/2009 water quality grades for lakes in the City. The CAMP report can be found at: http://www.metrocouncil.orq/environment/RiversLakes/Lakes/index.htm The Metropolitan Council uses the monitoring data to assign each lake a water quality grade using an A through F grading system. The grading system uses percentile ranges for three water quality indicators-summertime average values for total phosphorus, chlorophyll-a, and Secchi depth transparency. An overall grade is calculated as the average grade for the three individual grades. The overall grade for each of the monitored lakes is displayed on Figure 4 - Water Quality and Impaired Wafers. Over the last decade, reports generally show water quality remaining stable or improving in Scandia's monitored lakes. In the 2006 and 2010 reports, the majority of monitored lalces in the City were given a "C" grade, including Bone Lake, Goose Lake, Hay Lake, and Long Lake. In the 2010 report, White Rock Lake, Fish Lake and Jellum's Bay on Big Marine Lake were giv�n a "C" grade, improved from a "D" grade in 2006. Impaired Waters Under the federal Clean Water Act (33 U.S.C) the Environmental Protection Agency (EPA) requires the MPCA to set standards and assess Minnesota waters for impairments. The standards are set on a wide range of pollutants, including bacteria, Scandia Local Water Management Plan 13 May 2012 nutrients, turbidity and mercury. A water body is listed as impaired by the MPCA if it fails to meet one or more water quality standards. If a water body is listed as impaired, a Total Maximum Daily Load (TMDL} must be established for the pollutant. A TMDL implementation plan will then be designed to reduce the pollutant loading to meet the TMDL. Scandia will be required ta participate in TMDL plans for impaired water bodies within its borders. In Scandia the folfowing water bodi�s are listed as impaired: Water Body Type of Impairment Watershed District Bi Marine Lake Mercu CMSCWD Bone Lake Nutrients CLFLWD Fish Lake Nutrients CMSCWD Goose Lake Nutrients CMSCWD Ha Lake Nutrients CMSCWD Lon Lake Nutrients CMSCWD St. Croix River Mercu and PCB's CMSCWD White Rock Lake Nutrients RCWD Carnelian Marine Sf. Croix Watershed Districf TMDL Report (2092). CMSCWD recently completed its Multi-Lake Total Maximum Daily Load (TMDL) Report and has requested public comments by May 16, 2012. Fish Lake, Goose Lake, Hay Lake, Jellum's Lake and Long Lake in Scandia are included in the report. Th� report presents the results of detailed impairment assessments and watershed modeling for each (ake. The majo� source of nutrient pollution in Fish, Hay, Jellum's and Long Lake is identified as storm water runoff, while Individual Sewage Treatment Systems (ISTS) are the major source of nutrients in Goose Lake. The District notes that the data collected on these lakes indicated a declining trend in water quality due to excessive nutrient loading from each lake's watershed (from storm water runoff and individual septic systems) and due to phosphorus loading from in-lake sediments. The analysis indicates that phosphorus rsductions ranging from 29 percent to 34 percent on each of the lakes is necessary fo achieve the desired water quality standard for aquatic recreatianal use, Nutrient reduction {primarily phosphorus) will Scandia Loca!Water Management Plan 14 May 2012 need to target runoff from watershed sources including agricultural areas, septic systems, residential storm water, and internal loading from sources such as rough fish disturbance of sediment. The draft report also outlines possible strategies for implementation. The primary strategies identified for improvement of these lakes include the following: • Private projects to reduce runoff and septic system impacts • Education • Fishery management Comfart Lake Forest Lake Six Lakes TMDL (2090) Sfudy and Implementation Plan. This study and its implementation plan identify the eutrophication impairments far Bane Lake in Scandia and five other lakes in the Watershed. It identifies the phosphorus load that the lake can support in order to meet state standards, and goa{s for phospharus reduction. The implementation plan includes actions and methods that will be used to achieve the goal. These items are included in the district's 2008 Capital Improvement Plan. The efforts include monitoring, cost-share projects with landowners, education and outreach activities, and specific projects including the Bone Lake inlet and outlet fish barriers, infiltration basin design and implementation, a shoreline survey, Curley- Leaf Pondweed Management, a potential Alum Treatment, a survey of macrophytes and invasive species, and rough fish management. Rice Creek Watershed District. Whi#e Rock Lake was added to the impaired waters list in 2Q10 due nutrients. White Rock Lake is land-locked with a very smal! watershed. Land use in the area is primarily agricultural. The lake fluctuates periodically from a turbid, algae-dominated state to a clear, pfant-dominated state. At this time, there are no plans for a TMDL study. Scandia Local Water Management Plan 15 May 2Q12 Figure 4 Water Quality and Impaired Waters ._ I - . . ...... CHISAGOCOUN7Y� . ... 2JOlhStN _ _ " .,_ .�.._._ . _.. ,. _. ' "' '.. . .._. . ...�..,_. .. .... .� . . .. . ........_ . ... d`-' WASHINOTONCOVNTY � / � -%��- - �.1 .';� , t�T'C�� I� j i _ " � . �t�l�"Jb/ ../ ; � (�% c--(�- :: � �� k,t' o � ��,� �: G�I� ',\ in s�r� g � : �� y N�q� � ' � � 2181h SIIJ �' e�y _ : i � � `�___/ �' 9-g��6 `� I\� � J , _ y ''�, _i,� �� P�:• ' ��_ %" �� I� ti�; � / N (� �, � 1 s!� �,I Zl'�N �� l .^:t8lli Sl N 3 �� .. ��f�5 t� w .o� 11 � � I � < � �)i N � � ' �� ,y' �, � a l' � � 'L � �� 2 � ;;_ � i�� ScardiaTrN _ a° �� ,/ .— ` _— _ '_. __. . --/ ± � � � t z U � —__ �� : _�,,�'. \ ,I �� ._ .ra;:�},1 V -. ,- � �� i �l �l S, � -, , - ^`� �_�( � 2pT� apr ,.�.t��l.� n i 0 I � � �1� � � � ��.f . ' .'� OnkNlIRdN z' � a c �.!�1. � �� = � "� �.,1. 'M, I) 1 "�,�r � / � I yq �" �Q� -- �'1 (` ` y �� . �� ,z �'� :�� } � !„-. � `� c � n �� ;� ' __ _ �i�m� �� `'1J I '�(._ _ , ' (�� . .,� • 1&SIhS N ._....'� tj i��! � a l . . � g . �6'2� (� -.Fz .. _� �. �, f ' .;\ , � U t I .Q.. "a �� :. o �/ � /,�/ I' f �;'F-1_ --'",__. '. ��).�::=�-.._.. . .., ..__.. �1�'u ' ' - / / _ . V o � �, � ,�,�, w � �� ,h si w � D � -i Y .._...� �' � �: N W�E Legend s � Impaired Waters(MPCA 2008 List) o o.s i � Water Quality Grade(A-D), Miles 2010 Metropolitan Council's Citizen-Assisted Monitoring Program Data Sources:MN DNR FletroVolitan Council, �. rircn SCANDIA �� Scandia Local Water Management Plan 16 May 2012 Watershed Boundaries Figure 5 shows that the City of Scandia is included in three watershed management arganizations: the Carnelian Marine-St Croix Watershed District (CMSCWD), the Comfort Lake-Forest Lake Watershed District (CLFLWD), and the Rice Creek Watershed District (RCWD). More than half of Scandia is within the CMSCWD which drains to the St. Croix River in two ways. Land in the central and southern portions of the City, Big Marine Lake, Mud Lake, and Turtle Lake drain eventually to Little Carnelian Lake; a man-made outlet on the Lake connects to the St. Croix River. Land in the eastern portion of the City drains directly to the St. Croix River. The northwest corner of the City is part of the CLFLWD and drains to the Sunrise River which eventually drains to the St. Croix River. A small area in the s�uthwest part of the City around White Rock Lake drains to the RCWD and the Mississippi River watershed. The boundaries of the watersheds are shown on Figure 5 - Watershed District Boundaries. The table below summarizes the size of each watershed within the City. Watershed Name Size Acres Percent of Cit Area Carnelian-Ma�ine-St. Croix Watershed District 17,488 68.8% Comfort Lake-Farest Lake Watershed District 7,442 29.3% Rice Creek Watershed District 495 1.9% TOTAL 25,425 100.0% Each watershed management organization is required by the State of Minnesota to update their Watershed Management Pfan every 10 years. After a plan is approved by the Board of Water and Sail Resaurces, the watershed district requires each city or township within its boundaries to create and implement their own iocai water management plan consistent with the district's plan. Each city or township is then required to adopt, amend, or update its local contrQls to meet watershed district standards. Scandia is updating its local water management plan based on the recent update of the CMSCWD Plan. Scandia Local Water Management Plan 17 May 2U12 Figure 5 Watershed District Boundaries " � �� CHISAGO COUP�7{ 2JOIh St N � . . ... ... _ ... . . . .. . . . ... ... ... ... .�" - . . .. VJaSHINGTON�CnI,;JT\' �'"� �- Ji��.. r � � I ��;- a�� , )"_ 1, C� .� � 2 I , � o � �� 1 �� ::� , F ;` ,�, '' _ I, y - -� �'" � '`. y ,: i �c r` . . - .`,.:"l, � � � �``� ,` - . � . (c�..�- d� � ;� �� J. L � . Zi�.N 7'frtli Si N �,� `s v o. m�'�p i > � N'Z _ . �/ '�,p�� Q �. �`� o�� , � ' o y i a~'3 � �1 /� i �� , �,.I,� a � �, ' �.��,.r: _ i_j; , - — '�, --- _— __ J , � . � \ �'i `� a�KY) m � - �_, , �N s�� f�i �., �o5t,S O -- c� � r 0 ` � ��,1^'� �! 1�'�hp,� 1 �1'_ � )� �y�,,��y� Z �'; c I'' l'1Y (17C7UL`L:1�ly c il � i (�� W � a � `�y, ��,, � � o jt ,. �� r �I � � � r _ �' " � _ I , � � �''�° 'r� �` � � ,,; � � � :,- & ` � . .Q� � o ,� -� ,-� ��i � ��,,�{�� . ,. �, ��-. , �,�=r,- - � � r �� p '� �� Z z �astns N r - 'l. _ �a-��` 1� � � : �� ,. z ! ��' ( 2,;/c '� i' c I Q �� % �f > , _ -� ;,� ��, $%�( ��-� �! I c u` . ...._. _" \ _ r .�.•. " 'i-....0 _. ...-� N . �. _ . . . . ...SlNmt�. � � � � �` � ��''--. 1771h S1 N 7th St N � / � � - [- Z L�`�. � !_ N Legend W E CLFLWD: Comfort Lake-Forest Lake Watershed District CMSCWD: Carnelian Marine-St Croix Walershed District S RCWD: Rice Creek Watershed District o o.s � � M(les � Utrta Sources: P1M DNR hletropolitan Council SCANDIA �m Scandia Local Water Management Plan 18 May 2012 D. Geology and Topography This part of the Land and Water Resources Inventory describes the following: • Surficial geology • Sensitivity to groundwater pollution • Extent of known sand and gravel deposits • Topagraphy SurFicial Geo[opy Materials present at the surface of the lands in the City of Scandia were created by glacial and post glacial processes. Glacial materials present at the surface were deposited in two glacial episodes, the Wisconsin and the Des Moines. The Wisconsin Age ended about 25,000 years ago. Late in the Wisconsin Age, the Superior Lobe advanced south from the Lake Superior region, leaving moraine and outwash deposits in Washington County. The St. Croix end maraine has relatively high topography that extends no�theast-southwest through the northern part of Washing#on County. The Des Moines Lobe glaciation, the finai glacial episode in Minnesota, ended about 1�,000 years ago. The Grantsburg Sublobe of the Des Moines Lobe moved from southwest to nartheast through the northwest corner of the Washington County, leaving deposits along the western edge of the City af Scandia. This unusual south to north- maving glacier deposited a lateral moraine and outwash deposits. The tills related to the Des Moines Lobe glaciation are more compact, have more clay, and have lower hydraulic conductivity in general #han the Superior Labe tills. Figure 6 - Surficial Geology, shows the surficial geology of the City of Scandia. Geologic fandforms and processes influence topography, soif characteristics like infiltration rates and nutrient content, sensitivity to ground- water pollution, and the development of plant communities. Scandia Local Water Management Plan 19 May 2012 Sensitivity to Groundwater Pollution The 1990 Washington County Geology Atlas identifies areas of sensitivity to groundwater pollution. Figure 7 - Sensitivity to Groundwater Pollution - Prairie Du Chien and Jordan Aquifers, shows areas #hat are susceptible to groundwater pollution in Scandia. The areas of highest sensitivity are located along the St. Croix River and near some lakes in the western portion of the city. The classifications are derived both from the type of materiai overlying the aquifer as well as the amount of material. Areas that are more sensitive to polfutian have less material overlying the aquifer, the materials are fractured or are structured in a way that allows surface water to reach the aquifer more quickly than in other areas. Figure 7 - Sensitivity fo Groundwater PoUution - Prairie Du Chien and Jordan Aquifers, shows the sensitivity af wefls in the Prairie Du Chien and Jordan Aquifers ta groundwater pollution. Groundwater provides aN of the drinking water for the City of Scandia. Land uses that have the potential to generate pallutan#s should be limited to areas where the sensitivity to groundwater pollution is iow or managed to prevent pollution of groundwater resources. Extent of Known Sand and Gravel Deposits In 2000, the Metropolifian Council, the Department of Natural Resources and the Minnesota Geological Survey collaborated on an aggregate resource inventory of the seven-caunty metropolitan area. The inventory identified and categorized likely areas of dalostone deposits, and sand and gravel deposits. Areas identified as "dolostone" represent significant potential deposits of Prairie du Chien dolostone suitabie for crushed aggregate wi#h less than 1Q feet of overburden. The sand and gravel deposits are classified into three categories according to type and quality {based on percent of gravel content), thickness of deposit, amount af overlying material, relationship to water table, and reliability of the mapping. Figure 8 - Extent of Sand and Grave! Deposits, shows the extent of known sand and gravel deposits and #he lacation of dolostone deposits within the City of Scandia. The table below summarizes the estimafed area of Scandia Local Water Management Plan 20 May 2012 the dolosfione deposits and the categories of sand and gravel deposits found in the City of Scandia. De osit T e Size acres Dolostone 62 Sand and ravel de osits, ood to excellent ualit 649 Sand and ravel deposits, moderate ta good ualit 254 Aggregate plays #wo important roles in development: as a base for pavements and other structures, and as a principal ingredient in concrete. The proximity of aggregate to a development site is an irnportant component in the cost of aggregate and the overall cosfi of development. However, popula#ion growth, the subsequent demand for land and concerns about mining impacts can make securing sand and gravel deposit lands within a reasonabfe distance of development sites and existing residents challenging. The City of Scandia has two existing mining operations, and received an application in 2008 to re-open a third mine. The City revised its zoning map and ordinance in 2011 to limit the areas where mining is permitted to the existing mine locations. Scandia Local Water Management Plan 21 May 2012 Figure 6 Surficial Geology CHISAGO COUMY 2JOtii SI N� .._.:... . ... �..... .. ....... . .___._.. _'_�'__'. . ...___ _" ... ,., ..�. ._. ... ,.. ., . "" "" "' '_' . _.. � -� � - V�SHINGTON COUNTY � � I 1 ..� [ i�'� I ��'� _ �( � ^ ` I � '- ?• � 230th 51 N �� _ �'l � . z f�� ;� � 22ythStN �+ ' �e;y , „ ,� �1 ��-/�. 4 2 c 'V "�� ::'ir IfPJ,tl�.�:.. � � r� � � C � Z .. . �'� I . [' � ,ti 1 � � 1- � , �. � J w., ;1`5 21Ath St N � � �4j, ` � Z'�� '.".- ,�5'�'- a' � �,� O�g � Q �:�. �' o L I,�, a%2 , a � F � ; . S,_snnfa 7r � 1 . , , � . — � �- --__...__ -� —"--. -'. / — � — --- t,. �� r � ( ` a%0� �y � i I �a ``� •Y � �. h�r� a n ±.-. � � 'l�� . c� Cl, o = � ,�i z �� h'�/ � �1- ; � .i, �°M - �;v 1 ��f� _Y l`R� j ` �a'J.,,;. ,�y s r.. _ `��.a? O , � �O I� :G ' .7%i " 1 '',�r:,;,. : i F 'ufh`r e� r� � /',�1. ' °�� y i i .�� c �� / • � �'�� z � � � . � � �^ It+51h 5 iV n r i � � �. ' � t; . ..._....`k .._�... . _. t / � i � i U �;� � L .. . 1 Q C. � � / �� _. ,.o/ . � 3 `° •- --- -- --� . �,-. ; � `� � ;nx� � \ � t77�hSl�J �ilhStN Q511' m D Z � I Legend rv �"� Bedrock Ncar Surface Lacusirine Sand and Silt Organic Deposits W�E Fioodplain Alluvium(loamy) Lake Sand(Des Moines) Outwash(Des Moines) S Floodplain Alluvium(sandy) ��/ Lower Terraces Outwash(Superior) t > > Glacial Till,Sand and Gravel /�/i Middle Terraces Till(Superior) 4,000 Ice Contact Deposit Mixed Till(Des Moines) Middle R.Warren terrace O Feet Lacustrine Deposits � ,� Modern Lakes and Rivers Upper R.Warren lerraca Data Sources: MN DNR; � hletropolitan Council SCANDIA � Scandia Local Water Management Plan 22 May 2012 Figure 7 Sensitivity to Groundwater Pollution - Pi•airie du Chien and Joi•dan Aquifers �- cHisnco courrrv� zaou,st N I --•-.__.. . . ., � . ....... � .. .. .-- -• ..:.... .... .._... ..._._ �, ,. .. . � _,. ... . '� � � � 4W�SHINGTONCOUNTY�`\ � /� �j.,�= � �� 1�`�,-e�r' � �" - �—'f' i � 1 �� '` �;;° � - - i Z ` '� ,�� '- k'� \' '�.� ��.� 9 \�YS =� I!I � C � � �� . ...'nr , � � �I � IhSIN i , �� r � �` � � ; I � � en,�` � k' �'� � 22flth St N d e�Y � �►t '. _ , q' � � .o �i� �'•. I y m ��' - � ¢ o °'^ j � � Z 'P6 -' ' ' ..I a - 1 \� Z i �� - `t ` ' �� a �� 11l / . , � 3�� 'i `� � ( ( � d� � ',� ,��`i , �+�� ',t � ZiBihSLN m \�-�} T,�. s� c, c. � � yy o j l l � ,, '" a' `�� o��m I �`�(. Q ---�� ti� v2 e Z (�V( a~j2 c E i-I 1 i ,•�j ' • �;.;t__ o > �•� o � I -.-; 'c ScandiaTrN „' ��;�'�� a VJJ � � '� _ f � '-- � � - -_._. c,, Z l' i� T' .,�� ' 1 � \ �a/i�Y I I�; �n �,' I 5lN /� - 1 ' . � _ `(� r �'� 20�.r SP�e Ud��'� I I s• :��;'< << � �� a t, � �i��- �> - `�`_, y`� �� '> ��` R°'y i ' � .� � Q a� j �,�. �� t1 ,��4 �'�-. I�� 1 Y� i Q '�--�, _ ' ' >'' �5�a jc�, �� .- � �� i 9d T °�� ,. i s� , �r-�., _ � � i �; ; c- � � ��. � J � `,�" ,� '�� f i � 1�, � " � ; V� @ �. � _ �� ^ �� g�h j� �� 1.� � ! � �� 1''�'� _S� � � G � �'; ... �� ,. Y'� �-z 185th S N � . /' ��l�.�. �...�7� �� i • a ��i ti � /j i��.� , r` �2\ �, __. . _._ I �/� i ' � � x �// , . _ '.��L�, � � p (a r �"��.J.._... .. .._. \, � . _ n.... . . . . .. . • o . ._ _.- ._... .... ... �. / i/ .'�h ......._.-�r. � ! � ��`. 1 ':`-' lN�n � J�'� ° ...�� .� �4=�1771h5tN �hgtN h v� m � / < m - z `� � N Legend W�E Groundwater Pollution Sensitivity Moderate S Very High Low- Moderate High �oW 4,000 High -Moderate s,+`� Very Low O Feet s,, Data Sources: P�iFd Df�R; a�grY,-�. N1N Geolcyical Survey, �t� P9etropolilan Council SC�� Scandia Local Water Management Plan 23 May 2012 Figure 8 Extent of Sand and Gravel Deposits GHISAGO COUNTY� Olh SI � -•' ' '..__. . . _ _ ;. . .. ._. . '_" '_.-.._ _.. ... . .. .. ... ... . .__ 2J N ... . . ._. . . . ... ( . � �. WASHINGTON COUNN f` t ; /., � ' �.j��_- . ir�� . � . i i 1�� Z m, "'��. ~ ., �m I - �f m ,1 � ,�ila , ,, QL73 i r:.1 / 0 2 i �' �: �� 1 � �hStN � � � �1� Z P' � + ''.� j 225thSIN � v ��e�y ' _ F �t � "�� -_ ' �4. �T \ `� O ^ � � I �r0 Z ' �6 �J _ , I ., ��t• 2 � ,.\\ .� . � , ,,. ,. l � .. xi,�_' V � �� s ��- 1, , � e.,.a r � Q�� a ' ;S f � ' � 3 1 ( � a. Z �� i ��j ��cNi ` 218 i$IN��. A — 1,�1 T� :� a �ii ;`a.p � n,-n,. o J �� . ,p Q t o� g �u� 1Y:412i £ _. / �-�.- O.'� >` l' a i2 i ,_ a , �, E �i�.; , i ,�-- • - . � o_ScanciiTrrN . U' �'S �. �/i�� .. .._ � -' _- �. � . ' %',' — � Z ' � �. � � ,. ,. --� — -�-- . ' � _ �'�` •� � � . �R . \ �ai��y � - . ( �C� �2 \._� ' S. �i , ��5 T , �.��. _ � t , '�I `L� � � �� 2 �• o a�a � ��khir 1' � e` ,,a _ � R ,�'� ;-�� Q� a� � I��= i !J 2 .;' 1��2 �i c � . �4'7 ' { 1 �j, 9p� `��' ��'° ��'p �'' A � , ;., _s-� � �� ` � �� `; � ' '�� '�"1 � ,�c� �� i R� :- � 'v , �`:�.��` ' ,� ,�,.�� C\ i �7►-4�-L-�d'-D tr3� �� 'i / ��' ; II�i ;., l c _ :� �..f .� �;� I�_ � - �-�� ,�1 �s., ,� . ��/� �� , ,� ��l.. ... .. _.. � , ¢"/,.: �,.....' ._. .:.- _...�� .. �?' �� , '�� t� i»msiN �. .. sv�"'�r - � �� (/ ]�h St N t �I < i' �\ �� N 1 [- Z � ':�, �;�� I- Legend N W�E Aggregate Resources �� Mining Overlay District s Class 4,5 � Moderate to Excellent o o.s i �o % Previous Sand&Gravel Pits Miles � Dolostone Data Sources: P1Pi ur�k; P-tetropolitan Council '�: - SCANDIA � Scandia Local Water Management Plan 24 May 2012 E. Natural Areas and Cover Types This part of the Land and Water Resource Inventory includes the following information related to natural resources: • Original Vegetation • Natural areas • High quality natural areas • Regionally significant natural areas � Nationai Wetland Inventory • Wetland assessment status Oriqinal Veqetation Scandia's original vegetation was the result of glacial processes that created the tapographic landscape features and soil types. For example, along the St. Croix River, rich ailuvial soils and periodic flooding led to the development of floodplain forests. Surveys completed at the time of settlement indicated that the vegetation in the city was dominated by Oak Woodland/Brushland and Maple Basswood Forest plant communities. As the landscape was modified during European settlement, most natural communities on soils suitable for crop production were cleared for planting. Natural areas on steep slopes, hydric soils, and poor soils were left alone or used as pasture. As a result, Scandia's landscape today is a mosaic of agricultural lands, residential and commercial development, and remaining areas of natural cover. Existinq Natural Areas Figure 9 � Land Cover, was mapped using the Minnesota Department of Natural Resources' {MN DNR) Minnesota Land Cover Classification System {MLCCS). MLCCS combines the Minnesota Natural Heritage native plant community types with a cu[tural classification system to distinguish among different types and amounts of land cover, vegetation and impervious surfaces. Information on the Iocation, type, size, and quality of remaining natural areas is included in the MLCCS. Approximately 58°/a of the land 5candia Local Water Managemenf Plan 25 May 2a12 cover in the City of Scandia is classified as same form of natural area. Figure 10 - Natural Areas, shows remaining natural areas within the City and the table below summarizes the acreage of each type of natural area within the City. Natural Area T pe Size acres Forest 3,720 Waodland 1,72a Shrubland 1 Grassland 1,769 S arse ve etation 3 Forested wetfand 879 Shrub wetland 315 Herbaceous wetland 1,643 S arse wetland ve etation 14 Open water 3,051 TOTAL 13,107 Additional development within the City of Scandia has the potential to further impact #he patchwork of remaining natural areas that by privatefy-owned by fragmenting habitat and introducing invasive species. The City has adopted Section 6 of its Development Code that pravides criteria and incentives for Open Space Conservation Subdivisions ta encourage protection of natural habitat areas and open space. Scandia Local Water Management Plan 26 May 2012 Figure 9 Land Cover ✓ CHISAGO LOUNTY 2401h SI N ... . _.. _ "' "'."'.",�.�. .. . �..� . _...-_..._ � � . _ " _ ... . ... . .• "" "' ""' ' . .. ._' ..i �'�a � �"� �� WASHiNGTONCOUN�TV� �'. . .. �` n�,�.�, �` . � • � � .__" �t �IYlS� ' � ' � 1� . Y ' .��''� . �aJ �� 2 � ��, 11t 7'�,' �{a I Q7a?3 i /�—�'� t F�J � � '•j / tldp �'.C�� 'y�� r t'� .y�. '� � 3uin't�t� �`� �I . sc , � �,,.� �' �O 1v : �`� � - j '�� 2ein srr�e:�E � @ 'yFia e� . � '�;� � � (� � 1�� . -l�,^t',J { :� ��C� ��il�b i+_c . \_ � o � �T� � '` �� . i ) , � �� o � z �i - ,� j�r.. � h I o - . ' " .y ��i � l ` �1:; � I . c� ,.. �� , � ; � �j; `:�-'� 21QthS1 ��`►�..�p, � �� :.�C � i.��li�..`� � .�� N 9 � �1�.' � {'� �N'�i O _ .rF . d i 4, ' . � � 4 ry j,. �. O.ln � � , Dy 2 1 ' � � y g� � `9 e`• .� q� , A@. � T �ec - d. -,. o. y�ki }._.� Sraiut Tr N °-� p1 '�� i n ° ,^' �,.2 ��, �� r r �_�V �. %` �. � �.1,P- : d r��( � �(, • ' � � ,i.�9� vl�� vda ti"' 1 _ � ait� � - , �S_.. _ N � � }� � ,. . / � y. . �,y� � • p5� I � R'1r ��,��` �� - � �i � , ` '�''`j3� l �{D' [�y,.;'"i'.< /' � �. - - ; �P , , , � � ..(,Y , ' ;. - 'b` ✓ �� = f � OakhiIIRJN I Z .'� i i �� ,�� .,/'` � � — c ' G Q, I �d 3 2 (d � '�'• .ye� � o �.'�C�"y l_��^_ - .iiJ�f I ?��a/.�e 'l� Ah � � '7C�7 �'� �� . � ,i.,l... � Y �W7 �� \ , ��y" . �"`�_ _ I� I ` � �.. ��YI:t� � . r ', kv � . . y��h�prN '� �r��- � .�� , v � t v y c .s� 1_ 'b E a -� �� ,� �Ar � , . � ' - - Flh. N a �!, - � - � j. i i ' � �, � , _ . _ �., � _ ,. � ��_�.. � ._�. �/^ �.:,,. \., .�-�o , I ��...mTr � � � �� S�N 1 q � n ��l ct� ��`/th i M . , lh Sl N - . � w� ➢ Q �1�` �-� � ' :�z � - �� r' � �� Legend " Land Cover Type Wetland Forest Wetland Prairie W`�E Urban with Vegetative Cover � Woodland � Rock Outcrop S Urban with Little Vegetative Cover Upland Shrubland Water o o.s i � Planted or Cultivated Vegetation Wetland Shrubland Miles Upland Forest Dry Grassland � . Data Source: h1LCC5 SCANDIA �� Scandia Local Water Management Plan 21 May 2012 Figure 10 Natural Areas ` CHISAGO COUN7Y� 2401h S�N " " ... _.. . ..,,.. ... , -..- ,,,��rrr ..„�� . a{ 1� �� WASHINGTONGOUNTY � � I /�/��r i ' f v �n�• S� ��-•.-j ' ��,. r � . LYSGR9 !1 � ��• I� I/. r z , '�� . S .� . .i (+�, 1� .1� 1`� ' � F' � T�� A7 '�c ` Y� '., �� ^ ' � ,� ' <�. �!'1 ,�` }, ;•. �v.�` '� �� ' � �n si F� k ._- . �'� ' Oe � � � r: �c J� e i,�� j- C �. . .. 2%A�Sf PT � .. � .� .�, ��i ' ..' �'�� ' ` • v_ ,- I �' ' � o r. ,, £+ C'° � ��, �-�_ i ��,.. '�-o = �� . � � �' , c � ' �-' _ , z , , �� . � P ��a''��'� � i� � � ,{:.5;��: 4 i � ` , �� "� � �. . � . , � . r � � ►.�. �, , . � - � � H � r.�� . j;. � . . Z., ,� ; �+_:�-. "G!t�.SIN ' � �i,F� `�;s� � � o . � m\c� ` , � r '1+1 �` � /P� a'}� �S' � �► o�j g , -+' r .:� �1' "��. 2 "L L 2. 1�. n j z g f � .. ��l '4 x • Scandla Tr N �� Ez°'%'�,l- . ; a, � i � .. i �. ... � , .-- . . �. � .� � , f�.� I � . � , � _ f` ---- i ��' ; `' � � L y ' . I ! �,. ^ `'1 ? e � �� v I�' � ;ec'.` �r`'� � .f --�. '� c� .. � �4 , ,i0 �a a �.,..ir . r;) i. �� °-� _ �� t . 'c ti�? ,� , 1 `j c r __ °�� e�r Q � � . 1 � r OakhillRclN 1 = Z � G a�� _ � ,'- '�� a � � v� � s J�n. ,�� .. �a r Q :'•7 S' . � 4 � `�� j ._�� la��V� ' '*� '' �� ,� . ' j � ' � � '�':; � ,� '• • • _� ', , ,� .� � -�� ,. �., . , < - ' � _ . .:� Yr,N_ . � " .: _ . :,,,� i C'1�j�� Z .�e3�ns ro a �� f _..�' 1 �, � z � � �- `-.�.. . ..!-_. .o._..._. . 4 1 ' ti � . '/ { �'• c .. � ,.. �,.� x �� --� pi� • ` � ` ..Sla�n ' Q_ o` ,�.1 _.•'�" . " . .. , ..... � .� L . i-'� jY � U `c � \ 2 7771hSIN 7thStN � D Z � � Legend N Forest � Forested Wetland W`�'E Woodland ! Shrub Wetland S Shrubland '`��:;� Herbaceous Wetland o 0.5 1 � Grassland Sparse Wetland Vegetation Miles � Sparse Vegetation Open Water � oata Sourc��s: h9N Dh1R f•ietropolitan Council SCAND�A � Scandia Local Water Management Plan 28 May 2012 Qua(ity of Natural Areas There are two different measures of high quality natural areas: • Natural area quality grades included in the MLCCS • Minnesota County Biolagical Survey (MCBS) Natural area quality grades using an A through F grading system are coilec#ed as part of the MLCCS. Natural areas given a grade of A, AB, B, or BC are considered high quality and are displayed on Figure 11 - High Qualify Idatura! Areas. There are approximately 1,270 acres of high quality areas within the City of Scandia using this measure. MCBS Sites of Biodiversity Significance are also displayed on Figure 11. This data layer, generated by the MN DNR, represents areas with varying levels o# native biadiversity that may contain high quality native plant communities, rare plants, rare animals, and/or animal aggregations. A biodiversity significance rank is assigned on the basis of the number of rare species, the quality of the native plant communities, size of the site, and the site's context within the landscape. The classifications displayed on the map are described below: • Betow sites lack occurrences of rare species and/or natural features that meet MCBS standards fior an Outstanding, High, or Moderate rank • Moderate sites contain significant occurrences ofi rare species, and/or moderately disturbed native plant communities and landscapes that have a strong potential for recovery • High sites cantain very good quality occurrences of the rarest species, high quality examples of the rarest native plant communities, and/or impartant functional landscapes • C3utstanding sites containing the best occurrences of the rarest species, the most out- standing examples of the rarest native plant communities, andlor the largest, mos# intact functional landscapes present in the state. Scandia Local Water Management Plan 29 May 2012 Research by ecologis#s in Minnesota suggests that plant and animal communities that are high in natural diversity are better able to adapt to change and stress and are healthier than natural communities of low diversity. The table be[ow summarizes the acreage of the four categories of sites of biodiversity significance#ound within the City of Scandia. Natural Area T pe Size acres Below 309 Moderate 933 Hi h 332 Outstanding 343 TOTAL 1,917 Reqionallv Siqnificant Natural Areas The MN DNR completed an analysis of regionally significant Terrestrial and Wetland Ecolagical Areas in the seven county metropolitan area in 2004. The analysis assessed remaining forest, grassland, and wetland areas. The scores were determined by examining important ecological attributes of the natural areas, including size, shape, cover type diversity, and adjacent land use. Figure 12 displays the Regionally Significant Ecological Areas, as determined by the MN DNR. The table below summarizes the acreage for each category of Regionally Significant Ecologica( Areas found within the City of Scandia. Natural Area T pe Size Maderate 1,490 Hi h 1,328 Outs#andin 1,890 TOTAL 4,70$ Scandia Lflcal Water Management Plan 30 May 2012 National Wetland Inventorv The National Wetlands Inventory (NWI} is a national pragram sponsored by the US Fish and Wildlife Service (USFWS}. Based on the NWI data, the City of Scandia has approximately 5,492 acres of wetfand. Figure 13 - CMSCWD Wefland Management Categories, displays wetland area features mapped as part of the Nafional Wetlands Inventory (NWI). The NWI maps were created by identifying areas of wet sails using aerial photography and soils maps. The inventory data and maps are not based on field surveys, and do not include the detailed evaluation and analysis fhat is required for an official wetland delineation. Wetland Assessment Status The Carnelian Marine St. Croix Watershed Disfrict (CMSCWD) completed a we#land assessment and management plan for the district in 2010. The wetland assessment contains more complete and more accurate data than the NWI. A wetland assessment categorizes wetlands by importance, quality, and need for restoratian. Figure 13 - CMSCWD Wetland Management Categories depicts the wetland categories from that assessment. The Comfort Lake-Forest Lake Watershed District included a goal in its plan to complete a wetland assessment in 2011. Scandia Local Water Management Plan 31 May 2012 F'igure 11 High Quality Natural Areas ` CHISAGO COUNTY� ?q0 ��.. ...._. - . . ... , ... . thSlN t, it ....._ _..�_. Vd4SHINGTONCOUNTY� . . ....-_--..I., ....'. "'- " '•• . .._ _/.` _ ' \.'c ) �� _._\ 3 .T,r'� I I fl, I � � . ��:--�, ; � � �,�� ,`: � � ; � ry 1.1 _ � ,,� ." / c• � 2 ti � ` ��, �"i 3�hSIN � � k ,. . \1 � 2J.Sth St N � � ��R�e,y� � � `,;�i ��! 1 y � , ✓ �"'"' .o. � �[�X�p X� � r„� � q a 'A 7�i,� � ��l . � a � � i a 2 , ��: � � .. ~ � �. �'�; � �. �� 218�hS11`� �. tD .. � O�o,�: �.. �,r � n . ��.n I �t� � � ;'"�' �'Q �'c °� ' I , o � v yiv a'G o �� a'''r �4 �� . � , G 9 �. £ ,i F � � ScanAia Tr N ", Ez-h.�'�'_ a / � � �� _ � _ � �,�- , � `j" : �2,_�,,., � . �:� 1.. -� �•ti�, � �ah/y� , � I �\ • ;+ S�t� � �—' �, ^ _ .. � r � � .. �� ` �0`�' ��D la,.F�,r� �- � ;,, ��' ��y�t I� � i' � � � � � o I�— -'�� iE� ��i� � � y�� ,' �� 1_ � � Oakhill Rtl N � c �( �9��,�a v -� ; ,! ,+ I ..i,,' ,\.m w� 1 �,� �'j � 'Q. il � Ill. � 1 � ��, .� ,n�� „U � � JP �,�i �� I� �� r � l��,, 5 � -. ,, �� ; . . _� , 4 ,! � ��S ax __� I �,� I ; t I,_ _- I" �\� '�, Rd!/�c I�11 A) I ( ,A �`� � �r � �X ��^� F � I �/ �' 1 �� - ',�� ,� - C � . 'Y\��-..I\\ / � ) Vp, � ' �� ` iss�,s N �' o fI �� J�?� r•• - ��'� � I - ;�,� � ..�� ,� �f, �� a � `S�� r/ � -,�, ��=--- --. =�, w�i�'�JI '-� . ._ .�.� � �J ¢ g J ' � v U � � \ .,\ � �. .. . ..:... ....... ... . stuiR'tr_.....� � � � l ��= 1771h SI N Ih SlN Vi � D � � m �.,L..,�,- � �/ L v I �, Legend " W�E High Quality Naturai Areas Sites of Biodiversity Significance S G� Outstanding �� '� High Miles �1��)�' Moderate � Below � Data Sources: MLCCS, MN l3iological Survey SCANDIA � Scandia Local Water Management Plan 32 May 2012 Figure 12 Regionally Significant Ecological Areas `� [.HISAGO COUN�Y� 2401h Sl N � _._.... . _ .. . • .., . ,_-.. ... _.. ..�.. . _._... .. . _ .' ' '" "' "'..__-�.. . . . _ _ _ .. . j. ... ... ..'��I h, . � W15HINGTONCOUr� � � �.�� .. i. -� _=_ .�y.�- ` � I f . I 1/ Q�.�'Is.Wy L I r ,� .-' �.:' A i F- . , ' \� • � �, ;�� l-,. . t-' � 2 �'.! �-.. ' , � 1 / " � � ti 1:' �� . 230�h Sl N'�, � ;;� ,.. i !� � ei, Q;� j � `[28th SI�N ', m ~� �` � _ �} e�l� c < �� / _ -�,/ �. �( IRi�3C�7ic�'3 - i � , � ' a � d -,�� j Y z 'P�, i ° :r.r ') 2 :� � \ �. (�.�I �°''y i-' f {/ O � i z' �n � 181h51N � ._J '��q. � o. ,� �^'�n � � � `i w o ; O m � V�.�-=` � a l'g a �a � � '� ` ��' . F Scandia Tr N a � y� i m z (r� �I •,'\_ 'R7. :.--- � � ._ � ,��y v � �-r � c�\ h 'i\ � '-� � ,)i 20�'�� x .r.,.<�„r: o = ��a a Y ~�;_ _ ,� �� I�,'t, . �,,, OakhillRdN � � � � � I ,� �4�'� �� ' _ � �—.. + 1 . NdT � -��' i�� r. i� � r` '(: � . �J �l_ .� � � �Ogb�'�'� �� - �� { � � �t_ � c '1 �`:',` ` i �� '? iasm s N � ___��,__ . . '_ ��! � , :,. .2 , - ,, ; �� , ��_ , � o � ;. f.Q . cr o ;,,/, ,_ - , � , _ � �� ---.-- -- -__ �_ ..__ .. . ; � � , \ . �i' U_,;^' -..- . .. ...SIN��t � / � \ � ,� �.,,� 1771h St N � lh St N � v"� m � Y ' m \ .....,,�� j z �"\`. � F Legend " W�E Regionally Significant Ecologicai Areas s Outstanding Ecological Score High Ecological Score �� Moderate Ecological 5core Miles � Data Sources: b1N DNR, Ptetropolitan Council SCANDIA. ��. Scandia Local Water Management Plan 33 May 2012 F. Existing Water Planning and Regulatory Framework The purpose of this section is to: • Describe the purpose of surface water and groundwater planning at several geographic scales • Identify #he agencies and organizations that are responsible for surface water and groundwater planning within the City o#Scandia, and • Summarize the goals and policies of recent plans and studies regarding surface water and groundwater resources in the Cify af Scandia. The purpose of water planning is to protect and maintain or improve the quality of sur�ace water and groundwater resources. It shou[d be noted that there is a great deal of overlap in planning for surface water resources and planning for groundwater resources. While the planning efforts for each are described here separately, in reality, surface water planning eff�rts usua{ly tauch on groundwater issues and groundwater planning efforts often include issues relating to the interaction befinreen surface water ancf groundwater. At the national level, the Clean Water Act (1972) regulates the pollution of surface waters in the United States. The Environmental Protection Agency (EPA) is the primary agency that implements the Clean Water Act. Other federal agencies involved in water management include the U.S. Army Corps of Engineers, which regulates impacts to wetlands and navigable waters, and the Federal Emergency Management Agency {FEMA), which maps floodplains and flood-prone areas and floodplain insurance programs. At the state level, the Minnesota Pollution Control Agency (MPCA) implements the Federal Clean Water Act through permits, by identifying Impaired Waters and related regulations, and by setting groundwater standards and monitoring. The Minnesota Health Department regulates and protects drinking water. The Minnesota DNR maintains the list of Public Waters and grants permits for work in public waters, water appropriations, and regulates wetlands that are on the Public Waters Inventory. The Scandia Local Water Management Plan 34 May 2012 DNR also manages the state's Shoreland Program and Floodpiain Management Program. The Board of Water and Soil Resources (BWSR) oversees Iocal Watershed Management Organizations (including Watershed Districts) and approves their plans. BWSR also administers the Wetland Conservation Act statewide. Each of the state agencies operates grant and/or cost-share pragrams. The Metropolitan Councii creates plans for regional systems, including surFace and ground water. The Council approves local land use and infrastructure plans, and the Local Water Management Plans of Counties, Cities and Townships. Within fhe City of Scandia, surface water planning is done by several entities. Minnesota Statute 103D enabled the creation af watershed districts. Watershed districts are local units of government that manage surface water resources through the adoption and implementation of local water management plans. Because watershed boundaries are based on the drainage areas of rivers and [akes and do not follow political boundaries, there are three watershed districts within the City of Scandia: the Carnelian Marine-St. Croix Watershed District {CMSCWD}, the Comfort Lake-Forest Lake Watershed District (CLFLWD}, and #he Rice Creek Watershed District (RCWD). Figure 5 - Watershed District Boundaries, shows the boundaries of each watershed district within the City af Scandia. Every 90 years, each watershed district is required to update its water management plan to: � Protect, preserve, and use na#urai surface and groundwater storage and retention systems • Minimize public capital expenditures needed fio correct floocfing and water quality problems • ldentify and plan for means to effectively pro#ect and improve surface and groundwater quality • Establish more uniform (ocal policies and official controls for surface and groundwater management • Prevent erosion of soil into surface water systems • Promote groundwater recharge Scandia Local Water Management P1an 35 May 2012 • Protect and enhance fish and wildlife habitat and water recreational facilities; and • Secure the other benefits associated with the proper management of surface and groundwater. After plan approval by the Board of Water and Sail Resources (BWSR), the wate�shed district formal(y adopts the plan and requires each city or township within its boundaries to create and implement their own local water management plan consistent with the watershed district's plan_ As a result, the City af Scandia is required to develop its own local water management plan that is consistent with appraved watershed district plans. The CMSCWD adopted its most recent plan in 2010, the CLFLWD adopted its most recent plan in 2011, and the Rice Creek Watershed District adopted its most recent plan in 2010. After developing a local water management plan, a city or township should also develop or update local ordinances in order to implement the local plan. Groundwater planning is also completed by several entities within Minnesota. Minnesota Statute 103D allows watershed districts to include groundwater resources in thei� local water management plans, while Minnesota Statute 103B provides counties with the authority to complete groundwater plans. County Groundwater Plans are approved by the Board of Water and Soil Resources; Washington County's most recent Groundwater Plan was completed and approved in 2003, and will be effective through 2013. Washington County's 2003 Plan focuses on protecting groundwater resources through coordinated intergovernmental efforts. The County's priority groundwater issues in cities like Scandia include proper Subsurface Sewage Treatment System installafion and maintenance and sealing of residential wells. The plans, studies, and ardinances that were reviewed to develop Scandia's �ocal water management plan, or will be used to implement the plan, include: • Carnelian Marine-St. Croix Watershed District, Watershed Management Plan, 2010 • Comfort Lake-Forest Lake Watershed District, Watershed Management Plan, 2012-2021 • Rice Creek Watershed District, 2010 Watershed Management Plan Scandia Local Water Management Plan 36 May 2012 � City of Scandia Comprehensive Plan Update, 2010 � City of Scandia Development Code, 2011 • City of Scandia, Shoreland Management Regulations, 2007 • Washington County Groundwater Plan, 2003 � Washington County Model Groundwater Rules, 2004 G. Surface Water Pla�ning ThEs section briefly describes the most recent local water management plan for each of the three watershed districts within the City of Scandia, followed by a comparison of the goafs, objectives, and policies of each plan. It briefly discusses Washington County's 2030 Comprehensive Plan and its relationship to surFace and ground water planning. It also summarizes the City's current local water management plan and implementation tools. Carnelian Marine-St. Croix Watershed District, Watershed Manaqement Plan, 2010 The Carnelian Marine-St. Croix Watershed District's (CMSCWD) most recent watershed management plan was adopted in 2010. The plan's goals and policies are based on the outcome of a strategic planning effort that identified a need to prioritize the District's activities and expenditures to protect and improve the water resources of the District, and to facus on protecting the District's high quality resources. The plan includes a Focused Watershed Management process that is based on three levels of activity: � Routine Wafershed Managemenf for the non-impaired water resources of the District—these are the basic, day-to-day prograrns that are implemented throughout the District. • lmpaired Wafershed Management for water resources that are classified as impaired wafers—includes completion of TMDL studies for impaired waters and implementation of the recommendations from these studies Scandia Locaf Water Management Plan 37 May 2012 • Focused Watershed Management for non-impaired waters—includes efforts fo protect non-impaired waters so that they do not become impaired, by enhancing routine management activities on identified water bodies. The District Plan nates that this management process recognizes the limited financial resources of the District, and provides a framework and criteria direct the funding of all district programs and projects to improve and preserve water quality based resource classification, and take advantage of outside funding sources that are available to assist District efforts. Carnelian-Marine-St. Croix Watershed District (CMSCWD)Wetlands Manaqement Plan CMSCWD completed a district-wide Wetfand Managemenf Plan in July 2010. The plan includes a wetland function and value assessment, wetland management goals, management standards, buffer standards, and identification of Wetland Preservation Areas within the District. Based on the functions and values assessment, the plan includes a wetland classification system with four categories. The categories include: 1. High Quality/Highest Priority 2. Stream Corridor and Shoreland Wetlands 3. lsolated Wetlands 4. Utilized Wetlands Management goals and standards, including buffer width requirements and standards for wetland replacement, are based on #he classification system. Figure 13 identifies the locations and classifications of wetlands within the CMSCWD in Scandia, and identifies the locations of Wetland Preservation Areas within the City. Scandia Local Water Management Plan 38 May 2042 Figure 13 CMSCWD Wetland Management Categories " ` CWSAGO COUNTY ��Oth SI N .. . .. J � � '.' . _, _.' ... _._�.1... _ .... _� . . ... . .. j� , � Vd45HINGTONCOUNTY� L L_� .t "' ' � ,�ll��.-' S �9f' / I�. . ; � �� z' �r.�� ' �� . - �y_�,.�,�� '- . , � . • , W '' � L:J.•J1Iy ' . rD9 + $ � �a ' P�-`.f' i� 6' �, I P, �� ' . 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I �`� �� ')Z,��, r� �^ J�� . s ,,,V�1- �'' �,, 1 `g { � 1 •r � '`� �✓1,/ ,S�� :i {1 , u 3 , , ` � :� ' � • F , � . � , 6�o t� �°°.__;`�, ., '�� m � � ( � � �1 t-'\ �°�Aq ?t •� t. `�`'= ° � �� `r V 7)/' �a �•['�" ?� �\�'i�,� ` ..1c1'�"�-,�V ='� r . . �i � � � �:�✓��.r� .1� �� 0� ci�a, � ' .:l � r �� ' � .; �` ,\ .� m '� ')_._ + 1 � i " `oltH.th f3 ` � ,-,.�11 �l�aCt�a; _ t S � ,..,_ ' . _. , �I p- � t�� . `� z j q � �� ' ;��j ` � ' 9 '�' �, � F J � �. ,__ �\ � � o ��.s � f� ¢ k �'� +� �-- % � � _. .. .. .. .��'�. . ....... _.. ..��..rr-� ; � �, : '��!'t�" O �'� -� �' ` ��Nm'� � s5 � �� ` ��Y��-t—��,.� -Tl ��N .' �� y �� d A• t � t • `n eP. - ,,� J � :. ,.j^ � (:1 � � { r, ��v� � � ��.� I rt-��,_, u�'t ��.. � rs 1« � l Legend o 0.5 � W N E Mi� CM S C W D Wet lan d Managemen t Na tiona l We t lan ds Inven tory s Classification Lakes and Rivers r' � � Wetlands `--' :,-: 2 CMSCWD Wetland Preservation Areas �_ = 3 German Lake and Surrounding Area �� 4 Big Marine Park Reserve � Data Sourws: Chiscvd�, North of B(g Marine Lake SCANDIA Pletropolitan Council � 5candia Local Water Management Plan 39 May 2012 Camfort Lake-Forest Lake Watershed District, Watershed Manaaement Plan, 2011 The Comfort Lake-Forest Lake Watershed District's (CLFLWD) mos# recent watershed management plan was adopted in 2011. The plan contains the goals, objectives, and actions of the CLFLWD and guides the watershed's activities from 2012-2021. An electronic version of the plan can be found on the District's website. The plan includes goals, policies and implementation actions that address 8 major issuss: • Floodplain goals include conserving flood storage and capacity and limiting flood damage. • Lake goals include management to protect and improve water quality, limit the spread and entry of invasive species, and preservation of shoreline buffers. • Stream goais focus on managing stream water quality and habitat, invasive species management education, and the preservation and establishment of stream buffers. • Wetland goals address coordination with local governments to ensure no net loss, improving wetfand habitat research an phosphorus cycling in wetlands and the preservation and establishment of wetland buffers. � Upland resource goals include improving the beneficia! use of upland areas for storm water management, maintaining and res#oring uplands, and promoting upfands conservafion. • Groundwater goals address the protection of groundwater quality and quantity and maintaining #he function of groundwater-dependent natural resources. • Public Education goals address providing education and outreach services to the public to increase knowledge of and appreciation for the resources of the Distric# and increasing stewardship and participation in District programs. • Interagency Communication goals focus on partnerships that ensure efficient and cost-effective use of funds for water resource management and coordination of efforts toward managing resources. Scandia Local Water Management Plan 4Q May 2012 CLFLWD deve(oped a Total Maximum Daily Load (TMDL) plan for Bone �ake, which is discussed in the sectian an Impaired Waters. The District is proposing to complete a functional inventory of District wetlands in the 2Q11 Watershed Management Plan. CL�LWD's plan notes that the District has established an Urban Stormwater Remediation Cost-Share program that could be used as a source of funding that the City of Scandia could use to provide water quality enhancements as part of municipal prajects, such as future road projects. Rice Creek Watershed District. Watershed Manaqement Plan, 2010 The Rice Creek Watershed District's (RCWD) most recent watershed management plan was adopted in June 2010. The plan contains the objectives, policies, and management strategies of the RCWD and guides the watershed's activities for the next ten years. A smal! area of the Ci#y of Scandia around White Rack Lake falls within the RCWD. An electranic version af the plan can be found at the District's website. The goals included in RCWD's 2010 Watershed Management Plan include: • Use education and outreach tools to increase knowledge, awareness and capacity of decision-making for the district's constituents. • Manage lake systems for their ecological and community value. • Manage wetlands to improve diversity and ecological integrity on a district-wide basis. • Manage and operate drainage systems and manage and use waterways to recognize the origins of the sysfiem (natural or artificial) and connectedness of resources. • Minimize potential damage from excess runoff and flooding to infrastructure and resources. • Construct, maintain and operate the District's facilities in accord with resource management purpose and effectiveness. • Capitalize on oppo�tunities to enhance water quality, reduce runoff and flooding and enhance resources by using open space and greenways. Scandia Local Water Managemenf Plan 41 May 2012 The plan identifies the following key issues related to water management, plan goals and implementation strategies: • �ake Pepin Total Maximum Daily Load (TMDL) Study • Lake TMDL's • Management of runoff to the Mississippi River • Alternate storm water volume control methods • Climate change s Declining regional groundwater and groundwater management issues • Lake management issues related to nutrient enrichment and accelerated sedimentation � Invasive species � Wetland management • Public drainage system management Citv of Scandia Comprehensive Plan Update and Development Code Update The City of Scandia adopted its updated Comprehensive Plan in 2010, and completed a major revision of its Development Code in 2011. The Comprehensive Plan update included an update of the City's Locaf Water Management Plan. The City revised the sections of its Development Code related to water management to be consistent with the rules of the three local watershed districts, including the performance standards for storm water management, land alteration, and the erosion and sediment control that are included in Chapter 2 of the Code and in the subdivision ordinance. The City updated its Shoreland Management Regulations in 2007 and its �loodplain Regulations in 2010. Scandia Local Water Management Plan 42 May 2012 H. Groundwater Planning This section describes the most recent plans and studies relating to groundwater planning in the City of Scandia, followed by a comparison of the goals and objectives of each plan or study. Washinqton County Groundwa#er Plan, 2003-2013 The Washington County Graundwater Plan provides a county-wide framework for the protection and conservation of groundwater resources. The current plan was approved in 2003 and guides the protection of groundwater resvurces in the county until 2013. The overall goal of the Washington County Groundwater Plan is to protect the economic and environmental values groundwater provides through coordinated, intergovernmental efforts in research and assessment, policies, political influence, regulation, education, and cansultation and technical assistance. The plan addresses two major issues: groundwater quality and groundwater quantity. The plan identifies seven major issue areas relating to groundwater quality and groundwater quantity: • Non-agricultural land use • Agriculture, turf, and animal waste management • Individua! Sewage Treatment Systems (ISTS) • Wellhead protection and well management • Groundwater supply � Groundwater and surface water interaction • Hazardous materiais management and transportation Washinqfon Countv Model Groundwater Rules, 2004 In 2004, the Washington County Water Consortium develaped model graundwater rules for future adoption by the water management organizations (WMOs) located within the County. The modef ruies address graundwater appropriations, storm water runoff voiume control, graundwater quality, the protection of groundwater dependent natural resources. Scandia Local Water Management Plan 43 May 2012 The purpose of the model rules is to encourage wafier management organizations to adopt groundwater standards. As local units of government develop local water management plans they will also have to consider the adoption of similar standards in order to be consistent with the watershed management plan as they. The overall goal is #or groundwater protection to become an integral part of future land use decisions at both the watershed district level as well as the municipal level. Integratinq Groundwater and Surface Water Manaqement. Northern Washinqton Countv, 2003 The purpose of this study by Washingtan County is to provide local decision makers with planning level information on groundwater resources. It provides data to support management strategies and policies protecting lakes, wetlands, streams, and water supplies dependent on groundwater resources. The study area for this report includes all areas of Washington County north of State Highway 36. The study included: • An educational component aimed at educating and informing local water management groups • A hydrologic monitoring plan • An assessment of groundwater resources - lakes, recharge and discharge areas, and groundwater dependent resources were inventoried and classified • A strategy for integrating groundwater and surface water management, including policies and recommendations for drinking water protec#ion, maintaining recharge, and managing high water levels • A feasibility study far managing excess surface water- Valley Branch Watershed District investigated alternatives for retention and infi(tration of water in the upper watershed of the Sunnybrook Lake area. The strategy for integrating groundwater and surFace water management addresses four issues relating to groundwater: • Groundwater recharge and discharge areas o Areas susceptible to high water levels Scandia Local Water Management Plan 44 May 2012 • Groundwater-surFace water interaction and groundwater dependent resources • Education Groundwater Plan Goals, Oblectives, and Policies The 2003 Washington County Groundwater Plan, 2003 Groundwater Study and the 2004 Washington County Model Groundwater Rules, and local water management plans include a variety of goals, policies and objectives. Those that are most related to the City of Scandia include the following: • Goafs related to managing land use in non-urban areas to protec# groundwater • Goa�s refated to enforcing groundwater provisions in local mining ordinances • Goals and policies related to subsurface sewage treatment system management and to the proper design, building, operation and maintenance of those systems � Goals and policies related to the sealing of abandoned wells � Goals to maintain infiltration when land alteration and development are implemented • Goals refated to storm water management performance standards • Goals and policies related to management and transpo�t of hazardous materials The City of Scandia has adopted zoning requirements and performance standards that support protection of graund water resources. Section V. of this plan details the City's goals, policies and st�ategies related to ground water. Water Resource Related Aqreements The City's existing and proposed water resource-related agreements include the following: WCA Administrafion Agreemenf. The City of Scandia has an existing agreemen# wifh the Washington Conservation Disfrict (WCD) to provide technical expertise to the City in the administration of the Wetlands Conservation Act (WCA). The most recent contract with the WCD was approved on April 6, 2011. A copy of the agreement is included in the Attachments. Scandia Local Water Management Plan 45 May 2012 Proposed MOU with CMSCWD. The City will develop a proposed Memorandum of Understanding with the Camelian-Marine-St. Croix Watershed Disfrict that will address the organizafions' mutual roles and process for addressing development reviews and other joint activities. A copy of the proposed MOU will be included in the Attachments and will be considered as along with approval of this plan. Proposed MOU with CLFLWD. The City will develop a proposed Memorandum of Understanding with the Comfort Lake-Forest Lake Watershed District that will address the organizations' mutual roles and process for addressing development reviews and o#her joint activities, particularly in shoreland and floodplain areas. A copy of the proposed MOU will be included in the Attachments and will be considered with approval of this plan. Scandia Local Water Management Plan 46 May 2012 IV. ASSESSMENT OF ISSUES The City reviewed fhe watershed management plans of the three watershed management organizations having jurisdiction within the City to identify their inventories of the current significant water management issues across the City. The City's Planning Commission and residents identified water management issues in the City in the recent Comprehensive Plan update. There was a high level of agreement amang the District and City plans on water management issues in Scandia. The list below includes the issues that the Watershed Districts identified in their Water Management Plans that apply within Scandia, and summarizes approaches that the City will take to address the issues. The City's Planning Commission reviewed the list, and it was discussed at the public hearing for this LWMP. The Cify's goals, policies and strategies fo address the issues are listed in Secfion V. The specific implemenfation actions fhat the City wi11 fake fo address fhe issues are listed in greafer detai! in Secfion VI, ltems A and 8. The acfions that the Watershed Districfs have included in fheir plans to address fhe issues relafed to resources in Scandia are included in Section VI, ltem C. Water and Natural Resource lssues in Scandia include the followinq: 1. The potential for water quality declines in lacal lakes, rivers and wetlands due to existing and future land uses. The potential impact af development in shoreland areas, such as areas around Bone Lake and Big Marine Lake, is a particular concern. The City of Scandia has adopted and enforces its Shoreland Ordinance and Washingfon Counfy's Lower St. Croix River Bluffland and Shoreland Management Regulations to address fhese concerns. Water and natura! resource issues were a strong considerafion in the City's Comprehensive Plan and fhe Development Code update that implemented the plan. 2_ The potential for residential development and agricultural activities to impact water quality through soil erosion and runoff. CMSCWD has identified particular Scandia Local Water Management P{an 47 May 2012 erosion concerns near the St. Croix River bluffs, and CLFLWD has identified the watershed around Bone Lake as an area when erosion and sedimentation are a concern. The City updated its erosion and sediment control and stormwafer management ordinance in 209 9 to meet the sfandards of the watershed organizations and address this issue. !f supporfs fhe Watershed rules and permit process related to erosion confrol. The City has adopfed Washington County's Lower St. Croix River Bluftland and Shoreland Management Regulafions to address specific issues on the Sf. Croix River. The City supports speci�c projects fhat fhe Watershed Disfricts have identified in their plans to address idenfified erosion control problems (Secfion Vl, Ifem C). 3. Existing water quali#y concems related to impaired waters, including local lakes and the St. Croix River. The MPCA has identified seven lakes and the St. Croix River in Scandia as impaired waters. Six of the lakes are impaired by nutrient loading, largely from storm water runoff, septic systems, and phosphorus loading from in-lake sediments. CMSCWD and CLFLWD have completed TMDL studies ior these lakes, and have included specific projects to address fhe identified impairments in their plans. The projects are described in Section Vl, Item C. The City supporfs these improvement efforfs, and has updafed its sformwater and erosion confrol ordinances and development code to address fhis rssue. 4. The need to protect the St. Croix River as a unique resource, while maintaining existing land uses and traditional development pattems. The City's Comprehensive Plan identi�es the signi�cance of the St. Croix River to fhe community. The need to protecf the quality of this resource is reflected in the updated zoning map and development code that fhe City adapted in 2019. Recenf efforts include fhe Cify's code updates to protect scenic viewsheds, including fhe St. Croix area, and encourage profection of water and natural resources through fhe City's Open Space Conservation Subdivision subdivision option. The City has adopted Washingfon County's Lower St. Croix River Bluffland and Shoreland Management Regulations to manage land use along the St. Croix River. Scandia Local Water Management Plan 48 May 2012 5. The need to protect the functions and vafues that wetlands provide to the community. The City supports the CMSCWD Wefland Managemenf Plan, and wi11 assist wifh plan implementation during the review of subdivisions. The City's recenf development code update includes a requirement that functions and values assessmenfs be complefed on all wetlands that have nat been assessed by a watershed district, and will require developers to implemenf buffer requiremenfs and ofher best management practices based on wefland classifications. 6. The potential impacts of invasive species an wa#er resources and habitat. Cify ordinances prohrbif fhe use of invasive species in landscape plans, and encourage the use of native species. The City's Parks and Recreafion Commitfee in actively involved in the removal of invasive species from Cify parks. The Cify also supporfs the specific projects identified by the Watershed District to confrol invasive species in loca! lakes, streams and wetlands (Section Vl, Item C). 7. Need to identify and protect the quality and habitat functions of the significant upland natural resources in Scandia and maintain connections among these resources. The City's Comprehensive Plan placed a strong emphasis on identifying fhe nafura! areas wrthrn the Cify (Figure 90) and the high-quality natural areas in the community (Figures 91 and 92). This information was used to update fhe City's zoning map and to sfrengfhen sectians of the Development Code retafed to erosion and sediment control, stormwater management, woodland and free preservation, and landscaping. The City has adopted an Open Space Conservation Subdivision opfion, and encourages developers to utilize this option fo protecf high-quality wafer and nafural resource areas. The Crty supports Watershed Disfrict efforts fo identify high-quaJify nafural resources areas and connecting areas in their plans, and projects fo protecf these resources, included in Section V!, ltem C. 8. Need to protect floodplain areas and their functions_ The City has adopfed Ordinance 110—Floodplain Management, and enforces this ordinance to protect floodplain areas and fheir functions. Scandia Loca!Water Management Plan 49 May 2412 9. The potential impacts of existing and future land uses on ground water quality, particularly since groundwater is the source of drinking water for Scandia residents. The Cify considered groundwater profection as if developed fhe zoning map and developmenf code update fo implemenf fhe 2009 Camprehensrve Plan update. The City enforces strict conformance with regulations for design, installation and maintenance of on-site treatment systems, in cooperation wifh Washingfon County. The City is currently sfudying ifs existing 209 Community Sewer Systems on Big Marine Lake, and may amend ifs C!P to include system improvemenfs to profect ground and surface water resources based on the results of the study. The City's code supports inspecfion of on-site individual sewage treatmenf systems by an MPCA-certified inspector at the fime of property sale or transfer, and requirements fhat ihe sysfems meef state standards. 10.The need to educate Scandia residents on the importance of the City's surface and graund waters, and how their actions can help to protect these resou�ces. The City used ifs Comprehensive Plan process and the update of the Development Code to educate resrdents about the quality of water and natural resources in the community. The City will include informafion in rts newslefter, on ifs website, and use other educational opportunifies to educate residents on the quality of local resources and actions fhat they can take to help to protect these resources. The City also supports the efforfs of local wafershed districfs, other pu6lic agencies and non profit organizations fo provide education fo Scandia residenfs on fhese issues. 11.The need for partnerships among agencies, organizations, the City and its residents to address complex water management issues and find resources to address problems. The Cify is willing to work as a parfner with the Iocal watershed managemenf organizafions and ofher agencies fo address water and nafural resource concerns. Specific projecfs are identified in Section VI of this plan. These issues were the basis for development of the goals, policies and strategies for protection and management af surface and ground waters included in Section V. Scandia Local Water Management Plan 50 May 2012 V. GOALS, POLIClES AND STRATEGIES The City of Scandia has reviewed the goals and policies included in the three Wa#ershed District management plans and its own Comprehensive Plan. It has developed the goals and policies listed below for surface water management based on #hese plans and the needs and issues identified in Section IV for water management. The City's goals for surface water management are the numbered items that follow. Each goal includes several policies specific policies that will help to achieve the goal. Goal 1. The City of Scandia is committed to preserving, protecting and enhancing the quality of surfaces and ground water resources, and to avoiding adverse impacts to resources in the City. Policies and Strateqies: • The City will work caoperatively with local water management organizations, sta#e agencies and landowners to protect locaf wetlands, lakes, streams, and groundwater to preserve the values of these resources for future generations. • The City concurs with and adopts the Carnelian-Marine-St. Croix, Comfort - Lake-Forest Lake and Rice Creek Watershed Districts' Watershed Management Plans, rules and standards by reference through this LWMP. The Watershed Districts will continue to enforce surface water regulations and permitting within the City within the boundaries of each of their districts. • The City will coordinate its review of development proposals and zoning applications with the three Watershed Districts by providing copies of applications to the Districts and incorporating their comments and recommendations in the review process. • The City will manage land use and developmen# to support protection af surface and ground waters through the following elements of its Development Code: — Chapter 2 —Zoning Regulations, Section 3 Development Standards Scandia �ocal Water Management Plan 59 May 2012 • Subd. 3.3 — Environmental Regulations - Subd. 3.6 — Land Alteration and Grading • Subd. 3.7 — Stormwater Management ■ Subd. 3.8 -- Land Clearing ■ Subd. 3.11 —Woodland and Tree Preservation — Chapter 2 — Zoning Regulations, Section 6 Open Space Conservation Subdivisions — Chapter 3 —Subdivision Regulations — Chapter 4 — Mining and Related Activities — Chapter 5 — Shorefand Management Regulations — Chapter 6— �loodplain Management Regulations — Washington County Development Code sections adopted by reference: • Subsurface Sewage Treatment Regulations ■ Lower St. Croix River Bluffland and Shoreland Management Regulations • The City will review its regulations and update its ordinances as needed to be consistent with the LWMP, Watershed District and State regulations. • The City supports and requires developers and landowners to use storm : water practices that minimize impervious surfaces, incorporafie natural topography, preserve natural vegetation, swales and storage areas, anci promote the use of infiltration/filtration and other Low Impact Development (LiD) techniques. • The City will complete an inventory of its stormwater management _ facilities and develop policies related to managing these facilifies that wi(I support protecting and enhancing the quality of surFace waters in Scandia. • The City will work cooperatively with the Watershed Districts and Washingfon Cnunty to encourage the use of best management practices for agricultural land uses to minimize erosion and to protect the quality of surface and groundwaters. Scandia Local V1later Management Plan 52 May 2012 • The City wifl help promote existing storm water management related cost- share programs offered by local watershed districts and other partners. • The City will demonstrate a commitment to improving surFace water quality by incorporating best practices on City owned properly. Goal 2. The City will work with the local Watershed Districts to address the specific water management issues that are identified in the District's Plans. Policies and Strateqies: • The City supports the Watershed Districts' implementation of their standards for management of water quantity and quality, including controf of peak runoff, volume control, infiltration and filtration requirements, wetland standards, and best management practices to controf Total Suspended Solids (TSS), Total Phosphorus (TP), and runoff from development or redevelopment wifihin the City. The Districts will play the primary role in reviewing the storm water plans for development applications within the City, and implement their rufes through the review and permit process. The Cify will include the commen#s and recommendations of the Watershed Districts in application reviews. • The City will continue to participate in the Districts' Total Maximum Daily L.oad (TMDL) studies of impaired waters, and will cooperate with the Districts in the implementation of TMDL plans. The City will implement its Development Code to manage land use to protect the water resources in the City, including the Impaired Waters. • The City wilf cooperate with the CMSCWD as the District implements the cost-share projects identified within Scandia in the District Management Plan. The District indicated that it will bear the costs for design and installation of the projects. • The City will support the implementation of the CLFLWD's TMDL plan for Bone Lake by implementing its Shoreland and Floodplain ordinances. The City requests that the Watershed District continue to implement its storm Scandia Local Water Managemeni Plan 53 May 2012 water management and erosion confrol ordinance in the Bone Lake watershed area. The City supports and will cooperate with the projects the CLFLWD has identified to implement the Bone Lake TMDL study. � The City supports the Rice Creek Watershed District's efforts to study White Rock Lake and identify potential issues related to water quality and lake management. � The City will cooperate with the education and outreach efforts made by the local Watershed Districts, WCD and other agencies by including information related to water management and best management practices in its newsletter and/or website. Goal 3. The City will protect the quality of local water resources by supporting the Watershed Distric#s' goals and plans for managing the lakes, rivers and streams in the City. Policies and Strateqies: • The City will implement its land use plan, development code, and ordinances to protect shoreland areas and lake water quality, and will work with the Watershed Districts to achieve the lake management goals identified in the Watershed Districts' Water Management Plans. Goal 4. The City will work with federal, state and lacal agencies to protect the natural and scenic resources of the St. Croix River Corridor, both within and adjacent to the St. Croix National Scenic Riverway, while allowing traditional residential and recreational use patterns to continue. Policies and Stratec�ies: • The City will continue to apply Washington County deve(opment standards (the Lower St. Croix River Bluffland and Shore[and Management Scandia Local Water Management Plan 54 May 2012 Regu[ations) that limit the density, location and appearance of new development, until adoption of City standards. • The City will revise its Development Code and policies as needed to include protection of scenic views of #he river and a(low visual or physical access in appropriate iocations, including: — Follow the recommendations of the Parks, Trails, Recreation and Open Space Plan to improve access, increase visibility, and improve stewardship. — Improve visual access to the river corridor where potential overlooks or viewpoints exist, while avoiding damage to sensitive resources. — Continue developing the City's inventory of scenic resources, such as scenic roads and view sheds. Use this information to regulate cell tower development, and to offer incentives to pro�ect scenic resources and viewsheds. • The City will work with river corridor residents, the National Park Service and scenic river interest groups ta increase City-wide awareness and stewardship of the area's resources. Scandia Local Water Management Plan 55 May 2012 Goal 5. The City will protect and enhance the quality of wetland resources. Palicies and Strateqies: • The City will serve as the LGU for the Wetland Conservatian Act (WCA}. The City wiN utilize the technical assistance provided by the Washington Conservation District in carrying out this role. • The City will support and help to implement Watershed District assessments and requirements for wetland management, including buffer requirements and pretreatment of storm water prior to discharge into wetlands through the development review process. • Wetlands that have not been inventoried by #he Watershed Districts will be inventoried by owners/developers as part of development applications. The City will require that owners/developers complete a functions and values assessment and implement appropriate buffer requirements and ather best management practices. Watershed rules regarding wetland management will be applied based on the results of the assessment and the wetland classification. Goal 6. The City will protect and enhance the quality of natural resources. Policies and Strateqies: • The City will work with state agencies, Washington County, local Watershed Districts, residents and landowners to protect and enhance the natural communities and natural resources within the City through implementing its Camprehensive Plan, Development Code and ordinances. • To retain the �ural character of Scandia and protect natural resources, the City will encourage developers to maintain large, connected areas of open space, rather than small, fragmented natural areas. — The City will encaurage developers and landowners to use Open Space Conservation Subdivisions and park dedication to maintain Scandia Local Water Management Plan 56 May 2012 large connected areas of open space, retain native vegetation, protect habitat and manage storm water. — The City wilf encourage developers fo use the natural resaurce corridor assessment map to identify and protect key connections between naturaf systems. • The City will encourage subdivision design that preserves natural drainage systems and requires wetland and wetland buffer protection. • The City will work with other organizatians and support efforts to control the spread of invasive exotic species. • The City will use the natural resource priorities map included in its Comprehensive Plan and the 2Q0� Open Space Plan map to identify large, connected natural systems and will work with property owners, other governmental units, agencies and developers to protect the high- quality natural areas identified on the natural resource priorities map. � Scandia will continue to coordinate with both the Minnesota Department of Natural Resources and Washington County on plans for the long term acquisition and development of William O'Brien State Park and Big Marine Park Reserve_ • The City wil! coordinate with Washington County and other partners on a land acquisition programs for high quality areas identified on the natural resource priorities map. • The City will encaurage the restoration of indigenous plant communities and wildlife habitat in all private and public developments through its Open Space Conservation Subdivision option and the landscape plan requirements in its Development Code. • The City will coordinate with the DNR on the review of developments with potential locations of rare plant and animal species. • The City wiil implement performance standards and permit conditions for the management of mining operations in order to minimize or prevent negative impacfs to resources and nearby land uses. Scandia Local Wafer Management Plan 57 May 2012 Goal 7. The City will utilize its Development Code and ordinances and work with other organizations to preserve and protect the quality and quantity of groundwater resources. Policies and Strateqies: • The City will cooperate with Washington County, MPCA and the Watershed Districts in managing land use to protect ground water resources. The City will enforce its Development Code, Subdivision Regulations, and ordinances to protect groundwater quality and recharge areas. • The City will work with Washington County to identify sensitive groundwater recharge areas and groundwater dependent natural resources and use this information to guide development. The City's development code iimits contaminant-generating land use activities to areas where the potentiai to contaminate groundwater is low, and includes performance standards for management of hazardous materials. • In keeping with its general rural character, Scandia plans to continue relying primarily on individual on-site water and sewer systems to serve both existing and future development in areas outside the village center. In cooperation with Washingfion County, the City will enforce strict conformance with regulations for the design, installation, and maintenance vf on-site treatment systems inciuding minimum design, licensing, and installation requirements of the Minnesota Rules Chapter 7080. • Alternative and experimental wastewater treatment systems designed to serve a group of residential units may be considered far developments in the village center or as part of �pen Space Conservation Subdivision projects, provided they are privately owned and conform to adopted local and state standards. • The City supports inspection of on-site individual sewage treatment systems by an MPCA certified inspector at the time of property sale or transfer and requirements that the systems meet state standards. Scandia Local Water Management Plan 58 May 2012 � The City will respond to pollutant spilis that may impacf ground or surface waters. The City's Fire Department coordinates response efforts based on established Hazmat pratacols. The City will request assistance from the MPCA or other agencies as needed to respond to spill events. • The City will continue to work with Washington Caunty and the Sfate of Minnesota as permitting agencies, as the City operates and maintains the existing community sewage treatment systems on Big Marine Lake and in the Village. • The City will promote the use of native species to minimize the need for irrigation in order to recfuce groundwater use. Goal 8. The City will work with others on water and natural resource education efforts that help to protect the quality of those resources. Policies and Strateqies: • The City will support and promote the existing water-related education efforts of local watershed districts, Washington County, and other agencies. • The City will cooperate with Watershed Districts to provide educational materials to residents and businesses regarding the relationship between storm water runoff and impaired waters and landowner practices that can reduce the volume of runoff or improve the quality of runoff. (e.g., management of sediment on impervious surfaces, lawn care, winter sidewalk and road maintenance, etc). + The City will work with local watershed districts to create and distribute an Information Pacicet with information on application requirements, deadlines, the review process, permitting requirements of the City and local watershed districts, etc., to developers at the beginning of the development process. • The City will encourage landowners in already developed areas to improve storm water drainage to reduce the volume of runoff and polluted Scandia Local Water Management Plan 59 May 2012 runoff and participate in Watershed District cost-share programs and projects. • Provide educational materials to residents about how to avoid damage to groundwater resources when using household chemicals in Individual Sewage Treatment Systems (fSTS). • The City will provide information fihat encourages water users to practice water conservation techniques. • The City will provide educational materials to residents and businesses on utilizing native plants in their landscaping. • The City will encourage local nurseries to identify native plants and provide educational programs on native landscaping that protects surface water and groundwater. • The City will work with the Washington Conservation District, the DNR, and other agencies to promote existing invasive species education efforts (such as the DNR's Invasive Species Pragram}within City boundaries. • The City will encourage projects and efforts to remove invasive and exotic plants and animal species. Scandia Local Water Management Plan 60 May 2012 VI. IMPLEMENTATION PLAN A. Actions to Impiement This Plan and Address Identified Issues The City will complete and/or support the f specific impiementation actions lisfied below to implement the LWMP and Watershed District Plans to address #he 'sssues identified in Section IV. The City has prioritized the implementation actions as "high" and "medium" priority efforts. High priority efforts are those that are required by state or district rules and will begin saon after the adoption of the LWMP; medium priority efforts a�e those that will be implemented over a longer time frame. High PrioritLr Implementation Actions: 1. The City concurs with and adopts the Watershed Districts' Water Management Plans, standards and rules. The Watershed Districts will continue to enforce surface water regulations and permitting within the City, within each of their geographic areas. (Addresses Goals/Policies/Strategies 1, 2, 3, 4} 2. The City will incorporate the CMSCWD We#land Management Plan into its implementation of the Wetland Conservation Act (WCA). The CMSCWD wiU assist the City to coordinate the implementation of WCA with the District's Pian. (Addresses GoaislPolicieslStrategies 1 and 5) 3. The City will continue to act as the local government unit (LGU) responsible for administering the �equirements of the WCA in the CMSCWD and CLFLWD, and will use the services of the Washington Conservation District (WCD)staff for technical expe�tise in administering the WCA. {Addresses Goals/PolicieslStrategies 1 and 5) 4. The City will coordinate its review of devefopment proposals with the Watershed Districts, and will manage land use to support protection of surface and ground waters through implementatio� of its Development Code. (Addresses Goals/Policies/Strategies 1, 4, 6, and 7) 5. The City supports the Watershed Districts' implementation of their standards for management of water quantity and quality, including control of peak runoff, Scandia Local Water Management Plan 61 May 2012 volume control, infiltration and filtration requirements, wetland standards, and best management practices #o control Total Suspended Solids {TSS), Total Phosphorus (TP), and runoff from development or redevelopment within the City. The Districts will play the primary role in reviewing the storm water plans for development applications within the City, and implement #heir rules through the review and permit process. The City will include the comments and recommendations of the Watershed Districts in application reviews. (Addresses Goals/PolicieslStrategies 1, 2 and 3) Medium Prioritv Actions 6. The City will complete a Memorandum of Understanding (MOU) with the CMSCWD detailing the cooperative process that will be used for coordination between the Dis#rict plan activities (including regulation and enforcement when needed) and the City's land use and permitting responsibilities, to help to minimize the permit approval timeline and minimize duplication of efforts. {Addresses GoalslPolicies/Strategies 1 and 4) 7. The City will complete a Memorandum of Understanding (MOU) with the CLCFLWD detailing the cooperative process that will be used for coordination between the District plan activities (including regulation and enforcement in shoreland and floodplain areas) and the City's land use and permitting responsibilities, to help to minimize the permit approval timeline and minimize duplication of efforts. (Addresses Goals/Policies/Strategies 1 and 4) 8. The City will continue to participate in the Districts' Total Maximum Daily Load (TMDL)studies af impaired waters, and will cooperate with the Districts in the implementation of TMDL plans. The City will implement its Develapment Code to manage land use to protect the water resources in the City, including the Impaired Waters. {Addresses Goals/PolicieslStrategies 1, 2 and 3) : 9. The City will cooperate with the CMSCWD as the District implements the cost- share projects identified within Scandia in the District Management Plan. The District indicated that it will bear the costs for design and installation of#he projects. (Addresses Goais/PolicieslStrategies 1 and 3) Scandia Local Water Management Plan 62 May 2012 10.The City wil! complete an inventory and map of its existing stormwater management system. {Addresses GoalslPolicieslStrategies 1, 5 and 6) 11.The City will support the implementation of the CLFLWD's TMDL plan for Bone Lake by implementing its Shoreland and Floodplain ordinances. The City requests that the Watershed District continue to implement its storm water management and erosion control ordinance in the Bone Lake watershed area. The City supports and will cooperate with the projects the CLFLWD has identified to implement the Bone Lake TMDL study. (Addresses Goals/Policies/Strategies 1 and 3) 12.The City supports the Rice Creek Watershed District's efforts to study White Rock Lake and identify potential issues related to water quality and lake managemen#. (Addresses GoalslPolicieslStrategies 1 and 3) 13.The City will cooperate with the education and outreach efforts made by the local Watershed Districts, WCD and other agencies by including information related to water management and best management practices in its newsletter and/or website. (Addresses GoalslPolicieslStrategies 1 and 8) B. City of Scandia Funding Mechanisms and Capital Improvement Plan {CIP) Scandia coopera#es with Watershed Districts and may use general fund revenues to fund improvements when needed to address water quality and quantity concerns related to local roadways or public infrastructure. The City also uses its general fund revenues to update its plans and ordinances. The Ci#y requires that applicants for zoning permits, building permits and other approvals submit fees and escrows to pay the costs related to application review. Applicant fees and escrows, and general fund revenues as needed, wifl be used ta pay the cost of implementing shoreland and floodplain regulations and City ordinances. The following surface and ground water-refated projects are currently included in the City's Capital Improv�ment Plan (included in Attachments): Scandia Local Water Management Plan 63 May 2012 � Water quality improvements at Lilleskogen Park—the City is working with CMSCWD on water quality improvements, including a weir and wetland restoration. • The City has included funding in its CIP for improvements to the Uptown Sewer System, including a dosing chamber and pretreatment system. • The City is currently studying its 201 Community Sewer Systems on Big Marine l.ake, particularly the AndersonlErickson System. The City may amend its CIP to include system improvements based on the resul#s of the study. In addition to the items included in its CIP, the City will complete an inventory and map of its existing stormwater management system. The City estimates that the cost of the inventory will be $10,000, and hopes to complete the inventory by the end of 2015. Private developers are responsible to build and maintain the storm water facilities within private developments. C. Watershed District Implementation Projects and Capital Improvement Plans Implementation of the Scandia l.ocal Water Management Plan wil{ require cooperation with lacal Watershed Districts to implement projects within the City that are identified in the District Plans. The City supports the projects identified in the District Plans and Capital Improvement Plans that are within Scandia, including the following: Carnelian-Marine-St. Croix Watershed District Implementation Plan The CMSCWD plan describes three categories of activities that are included in the Districfi's Implementafion Program: routine wa#ershed management, focused watershed management, and impaired watershed management. Most of the activities included in these efforfs are implemented by the District. Some are implemented in cooperation with local landowners and volunteers. Cost-share Program, and identifies several existing or potential water quality and environmental issues that will be addressed by Scandia Local Water Management Plan 64 May 2012 the program. The District has ranked the proposed projects on a watershed basis. Many of the projects will be carried out in cooperation with private landowners. Intergovernmental coordination is included in the implementation efforts. The District Plan requests that local communities develop an MOU with the District complete a Memorandum of Understanding {MOU) with #he CMSCWD detailing the cooperative process that will be used for coordination between the District plan activities (including regulation and enforcement when needed) and the City's land use and permitting responsibilities, to heip to minimize the permit approval timeline and minimize duplication of efforts. • Scandia wi[I complete the requested MOU with the District to implement the intergovernmental coordination requested in the District Plan. The District Plan identifies some potential cost-share projects to be implemented in � Scandia. District staff indicated that the District wil! bear the cosf of design and installation of the projects, and is seeking suppart and cooperation from the City for its implementation efforfs far the following: • 205th Streef, St. Croix River bluff erosion control and storm water quality praject. Estimated cost: $15,000. • Neighborhood Small Lot Stormwater Management lncentive Program in Downtawn Scandia and lake neighborhoods. These projects are not defined in the plan, but may include impiementakion of storm water best management practices throughout the neighborhood. No cost estimate in the plan. The District estimates the cost of the Small Lot Stormwater Managernent Incentive Pragram at $30,000 over the next 10 years. • TMDL Study Implementation Projects. The District is currently completing TMDL studies on the impaired lakes in the District. The District is also participating in the Lake St. Croix River TMDL Study. These studies will recommend implemen#ation projects to address the identified impairments. The District expects that the projects will be funded primarily by grants. Scandia Local Water Management Plan 65 May 2012 • The District anticipates ravine reconstruction in Scandia to address existing problem areas, and has scheduled this activity in its Implementation Program. This includes work on the 197th Street ravine, estimated to cost $65,000. Other ravine projects are estimated to cost $60,000, but the District has not specified the locations of these projects. • The District has scheduled some non-specific project in its Focused Watersheds, including Sand Lake in Scandia. The District estimates that the cost of these project wil{ be $40,OOQ per year for the next 10 yea�s. Comfo�t Lake-Forest Lake Watershed District Implementation Plan The District's Management Plan includes three categories of implementation activities: Administration, Programs and Projects. Administration activities are carried out by the . District. Programs include development o# District rules and permitting activities, education and outreach. As noted above, the City concurs with and adopts the DistricYs Water Management Plan, standards and rules. The CLFLWD Districts will continue to enforce surface water regulations and permitting within the City, within its geographic area. The District advocates for in#ergovernmental coordination to accomplish the implementation efforts. The District Plan requests that Scandia complete a Memorandum o# Understanding (MOU) with the CLFLWD detailing the coaperative process that will be used for coordination between the District plan activities (including regulation and enforcement when needed) and the City's land use and permitting responsibilities, to help to minimize the permit approval timeline and minimize duplicatian of efforts. The District believes that a commitment to cooperation will be particularly valuable to coordinate reviews and permitting in shoreland and floodplain areas. • Scandia will complete the requested MOU with the District to implement the intergovernmental coordination requested. Scandia Local Water Management Plan 66 May 2012 Bone Lake is a resource of significant concern to the Watershed District. The District has completed a TMDL study for Bone Lake, and identified an implementation plan and projects to address the lake impairment. The City will support the implementation plan by implementing its Shoreland and Floodplain ardinances. The Watershed District will continue to implement its s#orm water management and erosion control ordinance in the Bone Lake watershed area. The City supports the DistricYs monitoring and assessmenfi efforts on local lakes, streams and wetlands, and the DistricYs Non-Point Source Polfution Abatement Grant Programs, and education and outreach efforts. The District identified some specific projects that it will impiement to address wa#er quality issues in Scandia lakes in its plan. The prajects will be funded through the District's annual levy and supported through grants. The projects include the following: Bone Lake • Bone Lake Inlet and Outlet Fish Barriers. Bone Lake has an overabundance of rough fish, which disturb the lake bottom and can caus� an increase in the internal load of phosphorus in the lake. The District will install a barrier to manage the movement of rough fish into Bone Lake at the inlet to the lake from Moody Lake. The project will be funded through grants and Disfric#funds. • Bone Lake Infiltration Basin Planning and Design. The project will include design of an infiitration basin to provide volume reduc#ion and water quality improvements through a subwatershed located east of the creek and near Oakhill Road North. Project planning and design will be funded by the District. • Bone Lake lnfiltration Basin Implementation. The project would implement the Infiltration Basin Design identified above. The facility will require private landowner participation to identifiy its location. Scandia Locaf Water Management Plan 67 May 2012 • Bone Lake Shoreland Survey. The District will complete a shoreline survey to identify areas for improvements such as shoreline bufFers and lakescaping. • Curley-Leaf Pondweed Managemen#. The District is proposing to implement activities to manage curley-leaf pondweed (an invasive species} as allowed by the DNR. The growth and decompositian of curley- leaf pondweed results in an increase in the phosphorus load in the lake and affects water quality. • Alum Treatment. The District may conduct an alum treatment or other in- lake treatment to reduce fhe internal phosphorus load in Bone Lake. • Macrophytes {lake plants) and Invasive Species Survey. The District may camplete a survey of macrophytes and invasive species in Bone Lake. The survey would be completed every five years. The survey would track the species in the lake and results of management efforts. • Rough Fish Management. The District may complete harvests of carp to decrease the population to a level that does not impact lake water quality. • The District will complete a phosphorus source assessment to evaluate the source ofi elevated phosphorus load in the wetland and drainage area between Moody Lake and Bone LaEce + The District is proposing to complete a variety of feasibi[ity studies and designs for wetland restorations in the Bone Lake watershed to reduce phosphorus and improve wetland function. Other Lakes and Streams • The CLFLWD will canduct lake wa#er quality studies and develop management plans for Sea Lake, Nielsen Lake and Clear Lake, and will complete a stream assessment of the Bone-Birch-School-Littie Comfort lake Tributary, located in Scandia. Rice Creek Watershed District Scandia Local Water Management Plan 68 May 2012 A small portion of Scandia is included within the Rice Creek Watershed District—the area around White Rock Lake. The District's Pfan includes no implementation projects for fihe White Rock Lake area. The City supports the District's efforts to study this lake and identify potential issues related to water quality and IaKe management. D. Official Controls The City of Scandia updated its Development Code in 2011. The new code includes updates to several sections that address surface and ground water management. These sections were updated to be consistent with the requirements of the three local Water Management Organizations. Updated sections include the following: Chapter 2: Zoning Regulations, Section 3 Developmen# Standards Subdivision 3.3 Environmenfial Regulations Subdivision 3.6 Land Alteration and Grading Subdivision 3.7 Stormwater Management Subdivision 3.$ Land Clearing Subdivision 3,11 W�odland and Tree Preservatian Chapter 3: Subdivision Regulations Section 12.0 Stormwater Management and Erosion Control Other recent ordinances that include regulations that address surtace and groundwater protecfion and management that were not changed in 2011 include the following: Ordinance 103 Mining and Related Activities Ordinance 107 Shoreland Management Ordinance 110 Floodplain Management The City also updated and adopted new Engineering S#andards and Detail Specifications in 2011 that address surface water standards and design, erosion and sediment control. Scandia Local Water Management Plan 69 May 2012 VI1. AMENDMENT PROCEDURES This Local Surface Water Management Plan will be applicable until the City's next Comprehensive Plan update, or until another update is required based on updates of local watershed district plans. Plan amendments will be incorporafed by following the review and adoption steps autlined below: The City shall prepare proposed amendments to the plan and give notice of the proposed plan amendments. Notice of public hearing on proposed p(an amendments and a description of the amendments shall be published by the City in at ieast one legal newspaper within the City. Publication shall accur at least ten days before the hearing. Notice shall also be mailed at least 30 days before the hearing to the Metropolitan Council and watershed management organizatians having jurisdiction within the city. At the hearing, the City shall salicit comments on the proposed plan amendments. Public hearings on plan amendments are likely to be held at regular Planning Commission meetings. After consideration but before adoption by the City, the City shall submit amendments to its water management plan to the watershed management organizations having jurisdiction within the city for review for consistency wi#h the watershed plan. The City shall also submit amendments to the pian to Washington County for review for consistency with the Washington County Groundwater Plan. The organizatians shall have 60 days to complete their review and approve or disapprove the local plan or parts of the plan. If the organizations fail #o complete their review within the prescribed period, the local plan shall be deemed approved unless an extension is granted by the City. Cancurrently with the City's submission of local water management plan amendments to the watershed management organization, the City shall submi# amendments to its water management plan to the Metropolitan Council for review and comment. The council shall have 45 days to review and comment upon the local plan. The council's 45-day review period shall run concurrently with the 60- Scandia Local Water Management Plan 70 May 2012 day review period by the watershed management organizations. The Metropolitan Council shall submit its comments to the watershed management organizations and shall send a copy of its comments to the City. After approval of amendments to the local plan by the watershed management organizations, the City shall adopt and implement its plan within 120 days, and shall amend its official controls accordingly within 1$0 days. Scandia Local Water Management Plan 71 May 2012 Attachments WCD Agreement related to wetlands technical assistance Erosion and Sediment Control Ordinance Capital Impravement Pian Scandia Lacal Water Management Plan 72 May 2012