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HomeMy WebLinkAbout2024-08-19 I09 Project Morgan Prairie Pothole Wetland Restoration_Site Plan AGENDA ITEM: CITY OF WAUKEE, IOWA CITY COUNCIL MEETING COMMUNICATION MEETING DATE: August 19, 2024 AGENDA ITEM: Consideration of approval of a resolution approving a site plan for Project Morgan Prairie Pothole Wetland Restoration FORMAT: Resolution SYNOPSIS INCLUDING PRO & CON: The applicant is requesting approval of a site plan for private improvements including a walking path and a parking lot, located west of NW 30th Street and north of Hickman Road, containing 220-acres. The project includes private improvements including field tile work to manage runoff from adjacent farm fields and restoration of natural prairie potholes. The project also includes an addition of an 8-foot-wide gravel walking path across the site and a small parking lot off of NW 30th Street. A small parking lot will be provided off of NW 30th Street. The gravel walking path will also connect to the trail along Hickman Road in two locations. The project includes an abundance of native plantings throughout the property. FISCAL IMPACT INCLUDING COST/BENEFIT ANALYSIS: COMMISSION/BOARD/COMMITTEE COMMENT: The Planning and Zoning Commission reviewed the site plan request at their meeting on August 13, 2024, and recommended approval: Approval of a Site Plan for Project Morgan Prairie Pothole Wetland Restoration Melissa DeBoer, Planning Coordinator, introduced the request for approval of a site plan for private improvements including a walking path and parking lot, as requested by Apple, Inc., represented by Mathew Stone with RES, LLC. The property is generally located west of NW 30th Street and north of Hickman Road, containing approximately 220 acres. The subject property was annexed into the City of Waukee and rezoned in 2017. Apple, Inc., purchased the property and surrounding properties to develop a data center. The project includes private improvements including field tile work to manage runoff from adjacent farm fields and restoration of natural prairie potholes. The project also includes an addition of an 8- foot-wide gravel walking path across the site and a small parking lot. A small parking lot with 11 parking spaces will be provided from NW 30th Street, providing access for people to park and use the gravel walking path. The gravel walking path will also connect to the trail along Hickman Road in two locations. The project includes repairing/rerouting field tiles to better manage stormwater runoff from adjacent farm fields. The project includes an abundance of native plantings throughout the property. I9 The comprehensive plan classifies the subject property as Technology Center. The Technology Center classification provides uses such as a data center and related industries that are not typically employment intensive uses and tend not to generate substantial amounts of traffic once established. The proposed use will compliment the adjacent data center. The site plan is in general conformance with the Site Plan Ordinance, Comprehensive Plan, and Planned Development. Staff recommends approval of the site plan for Project Morgan Prairie Pothole Wetland Restoration subject to remaining staff comments. Discussion as follows: • General discussion of residential property; Ryan Hardisty of CDA confirmed that future access to public utilities will be offered to this property owner, and have had several conversations regarding impacts to this site, intentional buffering, • General discussion with Ryan Hardisty of CDA and Mathew Stone, of Resource Environmental Solutions, regarding the materials of the walking path (gravel, to keep the site as natural as possible) and parking lot materials, including fencing around parking, and the existing fence around the property • General discussion of planned use; planned for wetlands for at least 10 years, Ryan Hardisty confirmed that a change to move to development would trigger a wetlands study and it becomes significantly more difficult to develop once it has been designated as wetlands, unsure what is planned after 10 years • What is driving this project from the owners’ side? Ryan Hardisty commented it was his understanding after being involved with the project approximately 7 years ago, the intent at purchase was some type of naturalization and to develop wetlands; he could not speak to the corporate decision process but as far as he knows this has always been a goal for Apple Motion by Commissioner Streit for approval of a Site Plan for Project Morgan Prairie Pothole Wetland Restoration, seconded by Commissioner Broderick. Ayes: Broderick, Streit, Koelker, Beenken, Lohse, Tessau and Bankole. Nays: None. Motion carried. STAFF REVIEW AND COMMENT: Staff recommends approval of the site plan for Project Morgan Prairie Pothole Wetland Restoration subject to remaining staff comments. RECOMMENDATION: Approve the resolution. ATTACHMENTS: I. Proposed Resolution II. Staff Report III. Site Plan PREPARED BY: Melissa DeBoer, Planning Coordinator REVIEWED BY: PUBLIC NOTICE INFORMATION – NAME OF PUBLICATION: DATE OF PUBLICATION: THE CITY OF WAUKEE, IOWA RESOLUTION 2024- APPROVING THE SITE PLAN FOR PROJECT MORGAN PRAIRIE POTHOLE WETLAND RESTORATION IN THE NAME AND BY THE AUTHORITY OF THE CITY OF WAUKEE, IOWA WHEREAS, the City of Waukee, Dallas County, State of Iowa, is a duly organized Municipal Organization; AND, WHEREAS, the City of Waukee Planning and Zoning Commission recommended approval of the Site Plan for Project Morgan Prairie Pothole Wetland Restoration, subject to remaining staff comments on August 13, 2024; AND, WHEREAS, the Site Plan for Project Morgan Prairie Pothole Wetland Restoration is in general conformance with §160 – Site and Building Development Standards Ordinance of the Waukee Municipal Code; AND, WHEREAS, the Site Plan for Project Morgan Prairie Pothole Wetland Restoration is in general conformance with §161 – Landscaping and Open Space Ordinance of the Waukee Municipal Code; AND, NOW THEREFORE BE IT RESOLVED by the City Council of the City of Waukee, Iowa on this 19th day of August, 2024, that the Site Plan for Project Morgan Prairie Pothole Wetland Restoration is approved subject to remaining staff comments. ____________________________ Courtney Clarke, Mayor Attest: ___________________________________ Rebecca D. Schuett, City Clerk RESULTS OF VOTE: AYE NAY ABSENT ABSTAIN R. Charles Bottenberg Chris Crone Rob Grove Anna Bergman Pierce Ben Sinclair PLANNING AND ZONING COMMISSION STAFF REPORT PROJECT: Project Morgan Prairie Pothole Wetland Restoration – Site Plan PREPARED BY: Melissa DeBoer, AICP – Planning Coordinator REPORT DATE: August 8, 2024 MEETING DATE: August 13, 2024 GENERAL INFORMATION Owner/Applicant: APPLE, INC. Project Manager: Mathew Stone with RES, LLC Request: The applicant is requesting approval of a site plan for private improvements including a walking path and parking lot. Location and Size: Property is generally located west of NW 30th Street and north of Hickman Road, containing approximately 220 acres. AREA MAP ABOVE: Aerial of property identifying the proposed site plan (outlined in RED). August 8, 2024 2 of 3 LAND USES AND ZONING Location Existing Land Use Comprehensive Plan Current Zoning Property in Question Vacant – Undeveloped Technology Center M-1 / PD-1 (Light Industrial District / Planned Development Overlay District) North Vacant – Undeveloped / Agricultural Land Urban Reserve N/A – Dallas County South Vacant – Undeveloped Technology Center M-1 / PD-1 (Light Industrial District / Planned Development Overlay District) East Industrial – Apple Data Center Technology Center M-1 / PD-1 (Light Industrial District / Planned Development Overlay District) West Vacant – Undeveloped / Agricultural Land Urban Reserve N/A – Dallas County HISTORY The subject property was annexed into the City of Waukee and rezoned in 2017. Apple, Inc., purchased the property and surrounding properties in order to develop a data center. PROJECT DESCRIPTION The project includes private improvements including field tile work to manage runoff from adjacent farm fields and restoration of natural prairie potholes. The project also includes an addition of an 8-foot-wide gravel walking path across the site and a small parking lot off of NW 30th Street. ACCESS AND PARKING A small parking lot with 11 parking spaces will be provided off of NW 30th Street. This will provide access for people to park and then use the gravel walking path. The gravel walking path will also connect to the trail along Hickman Road in two locations. UTILITIES The project includes repairing/rerouting field tiles in order to better manage stormwater runoff from adjacent farm fields. LANDSCAPING & OPEN SPACE The project includes an abundance of native plantings throughout the property. COMPREHENSIVE PLAN The comprehensive plan classifies the subject property as Technology Center. The Technology Center classification provides uses such as a data center and related industries that are not typically employment intensive uses and tend not to generate substantial amounts of car or truck traffic once established. The proposed use will compliment the adjacent data center. August 8, 2024 3 of 3 STAFF RECOMMENDATION The site plan is in general conformance with the Site Plan Ordinance, Comprehensive Plan, and Planned Development. Staff recommends approval of the site plan for Project Morgan Prairie Pothole Wetland Restoration subject to remaining staff comments. © 2022 Microsoft Corporation © 2022 TomTom © 2022 Microsoft Corporation © 2022 Maxar ©CNES (2022) Distribution Airbus DS © 2022 TomTom VICINITY MAP PROJECT MORGAN PRAIRIE POTHOLE WETLAND RESTORATION OWNER: NAME: APPLE, INC. ADDRESS: 1 APPLE PARK WAY CUPERTINO, CA 95014 CONTACT: JARED POWERS EMAIL: jared_p@apple.com PROJECT MANAGER: NAME: RES, LLC ADDRESS: 3700 SE BEISSER DRIVE, SUITE D & E GRIMES, IA 50111 CONTACT: MATHEW STONE EMAIL: mstone@res.us DALLAS COUNTY, IA SUMMER, 2024 AERIAL OVERVIEW MAP COVER SHEET DESIGNED: DRAWN: PROJECT MANAGER:JOB NUMBER: PLAN DATE: DESIGN TYPE: MS JM/DM/RR RR/JM 107237 07/08/2024 01 OF 10 REVISIONS PRELIMINARY DESIGN - 01/19/2023 REVISED DESIGN - 02/28/2024 33 NORTH DEARBORN STREET CHICAGO, ILLINOIS 60602 WWW.RES.US 0'500'1000'1500' GRAPHIC SCALE: 1" = 500' PROJECT LIMITS PROJECT LIMITS Not to Scale HWY 6/ HICKMAN RD HW Y 1 6 9 / N A V E N U E I-80 NW 3 0 T H S T SITE DESCRIPTION NE SE/EX RD/Sec: 25 Twp: 79 Rng: 27 NW SE Sec: 25 Twp: 79 Rng: 27 SW SE/EX RR & PART OF PARCEL A/Sec: 25 Twp: 79 Rng: 27 SE SE/EX RR & PART OF PARCEL A & EX RD/Sec: 25 Twp: 79 Rng: 27 SE NE/EX RD/Sec: 25Twp: 79 Rng: 27 SW NE Sec: 25 Twp: 79 Rng: 27 REVISED PERMIT DESIGN - 06/11/2024 FINAL DESIGN - 07/18/2024 S AVENUE HI C K M A N R O A D / H W Y 6 WB WB WB W B WB WBWB WB W B WB WB WB W B W B W B W B WB W B WB WB WB WB WB WB W B WB W B WB WB W B WB WB W B WB W B WB W B WB WB WB WB W B WB WB WB WB WB WB W B WB WB WB WB WB WB WB WB WB WB W B WB W B WB WB LOS L O S LO S L O S LO S LOS LO S L O S LO S L O S LO S L O S LOS LO S L O S L O S LOS LO S LOS LO S LO S L O S LOS LOS LOS LO S LO S LOS LOS LOS LOS LO S LOS LOS L O S L O S LO S LOS L O S L O S LOS LO S LOS LOS L O S L O S L O S LOS LOS LOS LO S LO S LO S LOS L O S LOS L O S LO S LOS LOS L O S LOS L O S LOS SFSFSFSFSF SF SF SF SF SF S F SF SF SF SFSFSFSFSFSFSFSF SF 33 N o r t h D e a r b o r n S t r e e t , S t e . 3 2 0 Ch i c a g o , I L 6 0 6 0 2 WW W . R E S . U S PROJECT MANAGER: DESIGNED: DRAWN: JOB NUMBER: DESIGN TYPE: DATE: SHEET NO: REVISIONS: X PROJECT STATUS: 07/08/2024 02 107237 MS JM RR/MU PR O J E C T M O R G A N P R A I R I E P O T H O L E W E T L A N D R E S T O R A T I O N ER O S I O N A N D S E D I M E N T C O N T R O L P L A N DA L L A S C O U N T Y , I O W A of 10 GRAPHIC SCALE: 1" = 300'150'0' 150' NOTES: 1.SEE SHEET 06 - PLANTING PLAN FOR EROSION CONTROL BLANKET EXTENTS. 2.INSTALL APPROPRIATE SEDIMENT CONTROL DEVICES PRIOR TO ANY SOIL DISTURBANCE. 3.TEMPORARY CONSTRUCTION ENTRANCES, SUCH AS ROCK INGRESS/EGRESS SHALL BE USED AT ANY ACCESS POINT WHERE CONSTRUCTION TRAFFIC WILL ENTER ONTO PUBLIC ROADWAYS OR STREETS. CONSTRUCTION ENTRANCES MUST BE KEPT IN GOOD CONDITION AND REQUIRES CLEANING AT THE END OF EACH WORK DAY AND PRIOR TO ANY RAIN EVENT. 4.EROSION CONTROL BLANKETS SHALL BE 100% BIODEGRADABLE. 5.STABILIZE DISTURBED AREAS IMMEDIATELY AFTER WORK IS PERMANENTLY COMPLETED IN EACH AREA. STABILIZE TEMPORARILY DISTURBED AREAS IF WORK WILL NOT RESUME IN THOSE AREAS WITHIN FOURTEEN (14) DAYS. 6.INSTALL PERIMETER SILT FENCE PRIOR TO UPSTREAM DISTURBANCE. 7.INSTALL INLET PROTECTION DEVICES PRIOR TO ANY WORK AND ACCORDING TO THE MANUFACTURERS RECOMMENDATIONS. MAINTAIN REGULARLY TO KEEP IN WORKING ORDER. 8.THE FOLLOWING DISCHARGES ARE PROHIBITED: WASTEWATER FROM WASHOUT AND CLEANOUT OF STUCCO, PAINT, FORM RELEASE OILS, CURING COMPOUNDS AND OTHER CONSTRUCTION MATERIALS, FUELS, OILS OR OTHER POLLUTANTS USED IN VEHICLE AND EQUIPMENT OPERATION AND MAINTENANCE, AND SOAPS OR SOLVENTS USED IN VEHICLE AND EQUIPMENT WASHING. SITE ACCESS AND PARKING LOT LOCATION INSTALL ROCK CONSTRUCTION ENTRANCE, MINIMUM 50' LONG x 25' WIDE X 2' THICK INSTALL SILT FENCE, 434 LF LEGEND PROJECT LIMITS EXISTING CONTOURS DELINEATED WETLANDS EXISTING TILES EXISTING TILE INLET DIRECTIONAL FLOW LINE POTENTIAL STORAGE/ STOCKPILE AREAS NOTES 1.CONTOURS WERE CREATED USING 2-FOOT COUNTY LIDAR DATA (2020) 2.NW 30TH STREET RECONSTRUCTION ITEMS DEPICTED ON THIS PLAN SHOW UTILITY INFRASTRUCTURE ONLY AND ARE NOT COMPREHENSIVE WB CURB INLET PROTECTION (4) SILT FENCE AROUND WALKING PATH INTERSECTION, UPSTREAM OF NEARBY CULVERT INLET 281 LF NW 30TH STREET HI C K M A N R O A D LOS ULTIMATE DISCHARGE LOCATION FOR THE SE DRAINAGE AREA. CULVERT CONVEYS STORMWATER UNDER HICKMAN ROAD TO EXISTING DITCH AND FLOWS APPROX. 73,180 LF TO SUGAR CREEK ULTIMATE DISCHARGE LOCATION FOR THE WEST DRAINAGE AREA TO EXISTING 12-INCH DRAIN TILE ULTIMATE DISCHARGE LOCATION FOR THE NE DRAINAGE AREA. FLOWS TO EXISTING CULVERT AND STORMWATER MANAGEMENT FACILITY ACROSS NW 30TH STREET APP R O X . P H A S E 1 L I M I T S APP R O X . P H A S E 2 L I M I T S UPLAND AREAS MAY BE USED FOR MATERIAL STORAGE, TOPSOIL STOCKPILING, AND STAGING, (TYP.). INSTALL SILT FENCE OR FILTER SOCKS AROUND STOCKPILES AS NEEDED, APPROX 1,700 LF. SILT FENCE DOWNSLOPE OF WETLAND BERMS 4,391 LF SURFACE DRAIN INLET PROTECTION (4) S AVENUE HI C K M A N R O A D / H W Y 6 24 " s t o r m o u t l e t 24 " s t o r m f e s 24 " s t o r m f e s 2 24 " s t o r m f e s 3 ss m a n h o l e cp 1 0 2 12 " c m p c u l v e r t 12 " c m p c u l v e r t 2 ss m a n h o l e 2 ss m a n h o l e 3 ce n t e r s t o r m 4 3 WB WB WB W B WB WBWB WB W B WB WB WB W B W B W B W B WB W B WB WB WB WB WB WB W B WB W B WB WB W B WB WB W B WB W B WB W B WB WB WB WB W B WB WB WB WB WB WB W B WB WB WB WB WB WB WB WB WB WB W B WB W B WB WB 33 N o r t h D e a r b o r n S t r e e t , S t e . 3 2 0 Ch i c a g o , I L 6 0 6 0 2 WW W . R E S . U S PROJECT MANAGER: DESIGNED: DRAWN: JOB NUMBER: DESIGN TYPE: DATE: SHEET NO: REVISIONS: X PROJECT STATUS: 06/11/2024 03 107237 MS JM RR/MU PR O J E C T M O R G A N P R A I R I E P O T H O L E W E T L A N D R E S T O R A T I O N DR A I N T I L E M A N A G E M E N T P L A N DA L L A S C O U N T Y , I O W A of 10 GRAPHIC SCALE: 1" = 300'150'0' 150' 5 5 7 9 4 4 5 5 4 4 4 4 4 4 3 5 5 5 4 4 4 6 75 4 4 5 8 5 6 3 LEGEND PROJECT LIMITS EXISTING CONTOURS DELINEATED WETLANDS EXISTING TILES EXISTING TILE DEPTH (FT) EXISTING TILE INLET BREAK EXISTING TILE & PLUG REMOVE EXISTING INLET AND PLUG DIRECTIONAL FLOW LINE NOTES 1.CONTOURS WERE CREATED USING 2-FOOT COUNTY LIDAR DATA (2020) 2.NW 30TH STREET RECONSTRUCTION ITEMS DEPICTED ON THIS PLAN SHOW UTILITY INFRASTRUCTURE ONLY AND ARE NOT COMPREHENSIVE DEPTH TO TOP OF TILE (FEET) RECONSTRUCTION OF NW 30TH STREET COMPLETED BY OTHERS. 5 WB 12-INCH DUAL-WALL FLEXCORR PIPE 1503 LF @ 0.276% US INVERT ELEV. = 1034.82 DS INVERT ELEV. = 1030.67 MIN. SLOPE = 0.10% 8-INCH DUAL-WALL FLEXCORR PIPE 449.0 LF @ 0.276% US INVERT ELEV. = 1036.06 DS INVERT ELEV. = 1034.82 MIN. SLOPE = 0.10% 6-INCH DUAL-WALL FLEXCORR PIPE 509.7 LF @ 0.653% US INVERT ELEV. = 1034.00 DS INVERT ELEV. = 1030.67 MIN. SLOPE = 0.20% 6-INCH INTAKE (EAST OF BERM) 6-INCH OBSERVATION WELL (WEST OF BERM) CONNECT TO EXISTING 12-INCH TILE SEE DETAIL 8 AND 9, SHEET 7 OBSERVATION WELL CONNECT TO EXISTING 4-INCH TILE OBSERVATION WELL CONNECT TO EXISTING 7-INCH TILE CONSTRUCTED WETLAND PIPES, STRUCTURES, AND GRADING SHOWN ON SHEET 04 - GRADING PLAN NW 30TH STREET HI C K M A N R O A D STORM SEWER (TYP.) WATER MAIN SANITARY SEWER APP R O X . P H A S E 1 L I M I T S APP R O X . P H A S E 2 L I M I T S 6-INCH INTAKE (EAST OF BERM) SEE DETAIL 8, SHEET 7 S AVENUE HI C K M A N R O A D / H W Y 6 24 " s t o r m o u t l e t 24 " s t o r m f e s 24 " s t o r m f e s 2 24 " s t o r m f e s 3 ss m a n h o l e cp 1 0 2 12 " c m p c u l v e r t 12 " c m p c u l v e r t 2 ss m a n h o l e 2 ss m a n h o l e 3 ce n t e r s t o r m 4 3 WB WB WB W B WB WBWB WB W B WB WB WB W B W B W B W B WB W B WB WB WB WB WB WB W B WB W B WB WB W B WB WB W B WB W B WB W B WB WB WB WB W B WB WB WB WB WB WB W B WB WB WB WB WB WB WB WB WB WB W B WB W B WB WB SC R A P E S C R A P E SCR A P E S C R A P E S C R A P E SCR A P E SCRAPE S C R A P E SCRAPE SC R A P E SCR A P E SC R A P E SC R A P E SCRA P E S C R A P E SCR A P E SCRAPE SC R A P E S C R A P E SC R A P E SC R A P E SCR A P E SC R A P E SCRA P E S C R A P E SC R A P E S C R A P E SC R A P E SCRA P E S C R A P E SC R A P E SC R A P E SCRAPE SC R A P E SCRAPE SCR A P E SCRAP E SCRAP E SCRA P E SC R A P E SC R A P E SCR A P E S C R A P E S C R A P E SCR A P E SCR A P E SC R A P E SC R A P E SC R A P E SCRAPE SCRAP E SC R A P E SCRAPE SC R A P E SCRAPE SC R A P E S C R A P E SCRAPE S C R A P E S C R A P E S C R A P E S C R A P E SC R A P E S C R A P E SC R A P E SCR A P E SC R A P E S C R A P E SC R A P E SC R A P E SCR A P E SC R A P E SCRA P E S C R A P E SC R A P E SCRA P E S C R A P E S C R A P E S C R A P E SCRAPE SC R A P E SC R A P E SC R A P E S C R A P E SCRA P E SCRA P E S C R A P E SCR A P E SC R A P E S C R A P E SCRAPE SCR A P E S C R A P E SCR A P E SCRAPE S C R A P E SCRAP E SCRAPE SC R A P E SC R A P E SCRA P E SC R A P E SCR A P E SCRAPE S C R A P E SCRAPE SC R A P E SCRAP E S C R A P E SCRAP E LOS L O S LO S L O S LO S LOS LO S L O S LO S L O S LO S L O S LOS LO S L O S L O S LOS LO S LOS LO S LO S L O S LOS LOS LOS LO S LO S LOS LOS LOS LOS LO S LOS LOS L O S L O S LO S LOS L O S L O S LOS LO S LOS LOS L O S L O S L O S LOS LOS LOS LO S LO S LO S LOS L O S LOS L O S LO S LOS LOS L O S LOS L O S LOS 33 N o r t h D e a r b o r n S t r e e t , S t e . 3 2 0 Ch i c a g o , I L 6 0 6 0 2 WW W . R E S . U S PROJECT MANAGER: DESIGNED: DRAWN: JOB NUMBER: DESIGN TYPE: DATE: SHEET NO: REVISIONS: X PROJECT STATUS: 06/11/2024 04 107237 MS JM RR/MU PR O J E C T M O R G A N P R A I R I E P O T H O L E W E T L A N D R E S T O R A T I O N GR A D I N G P L A N DA L L A S C O U N T Y , I O W A of 10 GRAPHIC SCALE: 1" = 300'150'0' 150' 2.91 AC 1.32 AC 1.10 AC 0.58 AC 1.00 AC 0.13 AC 0.86 AC 0.35 AC 0.77 AC 0.21 AC 0.20 AC 0.32 AC 6.73 AC 1.4 AC PROPOSED BERM TOP WIDTH = 10 FT TOP ELEVATION = 1031.00 SPILLWAY ELEVATION = 1030.50 EAST SIDE SLOPE = 10:1 MAX WEST SIDE SLOPE = 4:1 CONSTRUCTED WETLAND. PROPOSED BERM CREATED FROM SPOIL MATERIAL (TYP.) PROPOSED SLOPE POOL APPROX. 1 3 ACRE EACH (TYP.) PROPOSED WETLAND SCRAPE (TYP.) 0.56 AC 0.95 AC 0.65 AC 0.50 AC 0.72 AC PROPOSED WATER CONTROL STRUCTURE AND 12-INCH PVC OUTLET PIPE US INVERT ELEV. = 1028.00, APPROX. DS INVERT ELEV. = 1020.00, LENGTH = 779 FT STRUCTURE HEIGHT = 5 FT INSTALL ANIMAL GUARDS AND 2 ANTI-SEEP COLLARS ON EITHER SIDE OF EMBANKMENT ~38' ~3' SPOIL BERM 4 : 1 4 : 1 10:1 M A X 10'~2' EMBANKMENT 2' AVG SLOPE POOL 1.5' WETLAND SCRAPE PROPOSED S AVE. CONTOURS (TYP.) EXISTING GROUND PROPOSED SURFACE INLET. 6-INCH DIAMETER. CONNECT TO EXISTING TILE. REVETMENT CLASS D LINED SPILLWAY 5-FT BOTTOM WIDTH, 2-FT CHANNEL DEPTH 2-FT ROCK DEPTH WITH GEOTEXTILE 4:1 MAX SIDE SLOPES LEGEND PROJECT LIMITS EXISTING CONTOURS DELINEATED WETLANDS DIRECTIONAL FLOW LINE SUGGESTED LIMITS-OF-SPOIL AREAS NOTES 1.CONTOURS WERE CREATED USING 2-FOOT COUNTY LIDAR DATA (2020) 2.NW 30TH STREET RECONSTRUCTION ITEMS DEPICTED ON THIS PLAN SHOW UTILITY INFRASTRUCTURE ONLY AND ARE NOT COMPREHENSIVE WB 1030 1029 1028 10 3 1 1 0 3 1 SUGGESTED LIMITS-OF-SPOIL AREAS (TYP.) TO BE LOCATED IN UPLANDS ONLY. 2-FT MAX DEPTH. LOS NW 30TH STREET HI C K M A N R O A D APP R O X . P H A S E 1 L I M I T S APP R O X . P H A S E 2 L I M I T S 1031 1033. 5 1033.5 1 0 3 3 . 5 10 3 1 10 3 2 103 2 10 3 2 S AVENUE HI C K M A N R O A D / H W Y 6 WB WB WB W B WB WBWB WB W B WB WB WB W B W B W B W B WB W B WB WB WB WB WB WB W B WB W B WB WB W B WB WB W B WB W B WB W B WB WB WB WB W B WB WB WB WB WB WB W B WB WB WB WB WB WB WB WB WB WB W B WB W B WB WB 33 N o r t h D e a r b o r n S t r e e t , S t e . 3 2 0 Ch i c a g o , I L 6 0 6 0 2 WW W . R E S . U S PROJECT MANAGER: DESIGNED: DRAWN: JOB NUMBER: DESIGN TYPE: DATE: SHEET NO: REVISIONS: X PROJECT STATUS: 06/11/2024 05 107237 MS JM RR/MU PR O J E C T M O R G A N P R A I R I E P O T H O L E W E T L A N D R E S T O R A T I O N WA L K I N G P A T H P L A N DA L L A S C O U N T Y , I O W A of 10 8' WIDE PROPOSED GRAVEL PATH (TYP.) SEE DETAIL 11, SHEET 08. GRAPHIC SCALE: 1" = 300'150'0' 150' LEGEND PROJECT LIMITS EXISTING CONTOURS DELINEATED WETLANDS DIRECTIONAL FLOW LINE 8' GRAVEL WALKING PATH (11,434 L.F.) WB PROPOSED ASPHALT PARKING LOT SEE DETAIL 13, SHEET 08. PROPOSED SAVANNA TREE GROVE, SEE SHEET 10 FOR PLANTING SCHEDULES (TYP.)PARKING LOT PERIMETER FENCE SEE DETAIL14, SHEET 08. CONCRETE DRIVEWAY ENTRANCE PROVIDE CURB CUT PER CONSTRUCTION DETAIL 12, SHEET 08. NOTES 1.CONTOURS WERE CREATED USING 2-FOOT COUNTY LIDAR DATA (2020) 2.NW 30TH STREET RECONSTRUCTION ITEMS DEPICTED ON THIS PLAN SHOW UTILITY INFRASTRUCTURE ONLY AND ARE NOT COMPREHENSIVE 3.SEE SHEET 10 FOR PLANT SCHEDULES/LISTS NW 30TH STREET HI C K M A N R O A D 2% MAXIMUM SLOPE AT ALL TURNING POINTS, TYP. APP R O X . P H A S E 1 L I M I T S APP R O X . P H A S E 2 L I M I T S WB WB WB W B WB WBWB WB W B WB WB WB W B W B W B W B WB W B WB WB WB WB WB WB W B WB W B WB WB W B WB WB W B WB W B WB W B WB WB WB WB W B WB WB WB WB WB WB W B WB WB WB WB WB WB WB WB WB WB W B WB W B WB WB NW 30TH STREET HI C K M A N R O A D / H W Y 6 33 N o r t h D e a r b o r n S t r e e t , S t e . 3 2 0 Ch i c a g o , I L 6 0 6 0 2 WW W . R E S . U S PROJECT MANAGER: DESIGNED: DRAWN: JOB NUMBER: DESIGN TYPE: DATE: SHEET NO: REVISIONS: X PROJECT STATUS: 06/11/2024 06 107237 MS JM RR/MU PR O J E C T M O R G A N P R A I R I E P O T H O L E W E T L A N D R E S T O R A T I O N PL A N T I N G P L A N DA L L A S C O U N T Y , I O W A of 10 GRAPHIC SCALE: 1" = 300'150'0' 150' LEGEND PRAIRIE POTHOLE MIX (20.98 AC.)* SWALE/FRINGE MIX (41.63 AC.)* MESIC PRAIRIE/ SAVANNA MIX (156.69 AC.)* BERM STABILIZATION MIX WITH TYPE 3.B EROSION CONTROL BLANKET (NORTH AMERICAN GREEN SC150BN OR EQUAL) (3.5 ACRES)* PROJECT LIMITS EXISTING CONTOURS DELINEATED WETLANDS *SEE SHEET 10 FOR PLANTING/SEEDING SCHEDULES NOTES 1.STRAW MULCH TO BE INSTALLED THROUGHOUT THE SITE AS NEEDED . 2.WINTER RYE (CEREAL RYE) TO BE USED AS COVER CROP AS NEEDED. 3.CONTOURS WERE CREATED USING 2-FOOT COUNTY LIDAR DATA (2020) 4.NW 30TH STREET RECONSTRUCTION ITEMS DEPICTED ON THIS PLAN SHOW UTILITY INFRASTRUCTURE ONLY AND ARE NOT COMPREHENSIVE WB APP R O X . P H A S E 1 L I M I T S APP R O X . P H A S E 2 L I M I T S SECTION PLAN 18" TYP T Y P TY P WELL DEVELOPED ROOT BALL INSTALLED LEVEL WITH GROUND 2" PLUG 2" PLUG, 2-YR OLD STOCK (TYP.) TOP ELEVATION = 1031 STRIP TOPSOILEXISTING GROUND 10' CONSTRUCTED WETLAND GRADING PROPERTY LINE 10' MIN 4 : 1 10:1 M A X WESTEAST EXISTING GROUND LID WITH LOCKING MECHANISM STOP BOARDS AND TRACKS REMOVAL TOOL TO BE PROVIDED TO OWNER 1' MIN 5' 12-INCH PVC PIPE SEE PLAN FOR INVERT ELEVATIONS WATER CONTROL STRUCTURE AGRI DRAIN OR EQUAL INTEGRATED PVC WATERTIGHT CONNECTIONS WITH MATCHING INSIDE PIPE DIAMETER TO ADJACENT PIPE PROVIDE LOCATION MARKER POST 33 N o r t h D e a r b o r n S t r e e t , S t e . 3 2 0 Ch i c a g o , I L 6 0 6 0 2 WW W . R E S . U S PROJECT MANAGER: DESIGNED: DRAWN: JOB NUMBER: DESIGN TYPE: DATE: SHEET NO: REVISIONS: X PROJECT STATUS: 05/23/2024 07 107237 MS JM RR/MU PR O J E C T M O R G A N P R A I R I E P O T H O L E W E T L A N D R E S T O R A T I O N CO N S T R U C T I O N D E T A I L S DA L L A S C O U N T Y , I O W A of 10 ROCK CONSTRUCTION ENTRANCE1 N.T.S. PLUG PLANTING4 N.T.S. SILT FENCE2A N.T.S. EROSION BLANKET3 SILT FENCE2B N.T.S. EMBANKMENT5 N.T.S. N.T.S. WATER CONTROL STRUCTURE6 N.T.S. TILE DISABLING7 N.T.S. TILE DISABLING NOTES: -SHOULD UNEXPECTED DRAIN TILE BE DISCOVERED DURING CONSTRUCTION, THE PROJECT ENGINEER SHALL BE CONTACTED FOR APPROPRIATE COURSE OF ACTION FOR THE TILE DISABLING. -BACKFILL TRENCHES WITH EXCAVATED SOIL AND COMPACT TO A LEVEL EQUAL TO OR GREATER THAN THE ADJACENT, UNDISTURBED SOIL. -TILE ENDS SHALL BE PLUGGED WITH CONCRETE (MIN. 2' IN LENGTH). PLUGS SHALL BE WATER TIGHT. BACKFILL AND TAMP BY HAND A MINIMUM DISTANCE OF TWO FEET AROUND EACH SEALED TILE END WITH SUITABLE SOIL MATERIAL. BACKFILL THE REMAINING TRENCH WITH THE MOST SUITABLE MATERIAL AVAILABLE AND COMPACT TO A DENSITY EQUAL TO OR GREATER THAN THAT OF THE SURROUNDING UNDISTURBED SOIL. OVERBUILD BACKFILL TO ALLOW FOR SETTLEMENT IN TRENCH TRENCH BOTTOM WIDTH VARIES BY BUCKET WIDTH - 24-INCH TYP. EX. TILE 50 FT MINIMUM EXISTING GROUND EXCAVATION AREA EXISTING GROUND CRUSHED DRAIN TILE CRUSHED TILE 12 - I N C H TH I C K N E S S M I N . 103.0' 9.0' 3.0' 24' DRIVE 19.0' 43.0' 10.0' 5.0'FUTURE SIDEWALK COMPLETED WITH PUBLIC IMPROVEMENTS EXISTING NW 30TH STREET CURB AND GUTTER SUDAS CONCRETE DRIVEWAY, TYPE A AND CURB CUT SEE DETAIL COMPLETED WITH PUBLIC IMPROVEMENTS PROPOSED EDGE OF GRAVEL SHOULDER PROPOSED EDGE OF ASPHALT PROPOSED PERIMETER FENCE 1 HANDICAP PARKING STALL PROPOSED TRAILHEAD 2% T Y P . 2% T Y P . 1.7% TYP. 8.0' 3" HMA PAVEMENT, 2, 1.5" COURSES 1" CRUSHED STONE BASE COURSE 8" DEPTH 3 4" GRANULAR SHOULDER 6" DEPTH 3: 1 3: 1 3: 1 3: 1 5.0'8.0' EOP 1047.72 EOP 1047.86 EOP 1047.98 SW 1048.12 SW 1048.05 SW 1048.18SW 1048.25 BOC 1047.19 FL 1046.98 BOC 1047.17 FL 1047.00 EOP 1046.00 EOP 1046.00 EOP 1047.72 1.5%3.3%1.7% MATCH BOC MATCH BOC HANDICAP SIGN 26.0' 7.0' 42 " M I N . COMPACTED GRAVEL SUBGRADE 6-INCH MINIMUM BELOW POST 36" DEEP POURED-IN-PLACE CONCRETE FOOTING, TAPERED AWAY FROM POST 2-FT MINIMUM DIAMETER FOOTING 6X6 TREATED WOOD POST WITH TAPERED TOP 36 " M I N . 48 " M A X . EYELET LAG SCREWS WITH STAINLESS STEEL CHAIN NOTE POST SPACING SHALL BE 8-FT OC FINISHED GRADE 33 N o r t h D e a r b o r n S t r e e t , S t e . 3 2 0 Ch i c a g o , I L 6 0 6 0 2 WW W . R E S . U S PROJECT MANAGER: DESIGNED: DRAWN: JOB NUMBER: DESIGN TYPE: DATE: SHEET NO: REVISIONS: X PROJECT STATUS: 07/08/2024 08 107237 MS JM RR/MU PR O J E C T M O R G A N P R A I R I E P O T H O L E W E T L A N D R E S T O R A T I O N CO N S T R U C T I O N D E T A I L S DA L L A S C O U N T Y , I O W A of 10 WETLAND SCRAPE INTAKE RISER8 N.T.S. OBSERVATION RISER9 N.T.S. OBSERVATION INSTAKES SHALL BE INSTALLED IN-LINE ON THE TILE. RISER CONNECTIONS SHALL BE WATERTIGHT. RISERS SHALL BE SECURED FROM TIPPING USING 2 T-POSTS RISER CONNECTIONS SHALL BE WATERTIGHT. RISERS SHALL BE SECURED FROM TIPPING USING 2 T-POSTS DRIVEWAY APPROACH - EXISTING PAVEMENT12 N.T.S. PARKING LOT13 PLAN VIEW PAVEMENT SECTION 1"=10' N.T.S. LIMESTONE SCREENINGS 8-INCH DEPTH COMPACTED IN 2, 4-INCH LIFTS COMPACTED SUBGRADE SLOPES VARY 8-FT, TYP. 2% MAX. GRAVEL WALKING PATH11 N.T.S. WETLAND SCRAPE10 N.T.S. PARKING LOT PERIMETER FENCE14 N.T.S. WB WB WB W B WB WBWB WB W B WB WB WB W B W B W B W B WB W B WB WB WB WB WB WB W B WB W B WB WB W B WB WB W B WB W B WB W B WB WB WB WB W B WB WB WB WB WB WB W B WB WB WB WB WB WB WB WB WB WB W B WB W B WB WB NW 30TH STREET HI C K M A N R O A D / H W Y 6 33 N o r t h D e a r b o r n S t r e e t , S t e . 3 2 0 Ch i c a g o , I L 6 0 6 0 2 WW W . R E S . U S PROJECT MANAGER: DESIGNED: DRAWN: JOB NUMBER: DESIGN TYPE: DATE: SHEET NO: REVISIONS: X PROJECT STATUS: 06/11/2024 09 107237 MS JM RR/MU PR O J E C T M O R G A N P R A I R I E P O T H O L E W E T L A N D R E S T O R A T I O N PR E C O N S T R U C T I O N S T A B I L I Z A T I O N P L A N DA L L A S C O U N T Y , I O W A of 10 GRAPHIC SCALE: 1" = 300'150'0' 150' LEGEND SPRING OATS PLANTING MID-SUMMER MOWING FALL CEREAL RYE PLANTING ON SLOPES 218 ACRES PROPERTY LIMITS EXISTING CONTOURS DELINEATED WETLANDS DIRECTIONAL FLOW LINE WB NOTES 1.CONTOURS WERE CREATED USING 2-FOOT COUNTY LIDAR DATA (2020) 2.NW 30TH STREET RECONSTRUCTION ITEMS DEPICTED ON THIS PLAN SHOW UTILITY INFRASTRUCTURE ONLY AND ARE NOT COMPREHENSIVE APP R O X . P H A S E 1 L I M I T S APP R O X . P H A S E 2 L I M I T S 33 N o r t h D e a r b o r n S t r e e t , S t e . 3 2 0 Ch i c a g o , I L 6 0 6 0 2 WW W . R E S . U S PROJECT MANAGER: DESIGNED: DRAWN: JOB NUMBER: DESIGN TYPE: DATE: SHEET NO: REVISIONS: X PROJECT STATUS: 02/28/2024 10 107237 MS JM RR/MU PR O J E C T M O R G A N P R A I R I E P O T H O L E W E T L A N D R E S T O R A T I O N PL A N T L I S T S A N D S C H E D U L E S DA L L A S C O U N T Y , I O W A of 10