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Walnut Grove 2 Final Plat'Xeld pu~ '~Joa 'a^!l ol aS~ld 2aB 'v' s~J~d In~!ln~aq pu~ SlJPJl Ou!pu!~ sassau!snq 8u!^Hql 'u,~olu,~op 5U!LUJ~Lp ~ 'SIOOqSS/~l!l~nb 'sa)t~l u~ap L41!~/~i!UnLULUOS BU!~OJO ¥ · uassequ~q3 ~o AIK) NOI,LVAttSIS~Id ~I~I&/DNIIdVDS(INVq 'sloI ienp[A!pu! uo poleooI ouoz Kaetuud oql jo suo!laod asoql JOAO popJooaJ ~u!oq S! luatuosea uo!le^.~asuoo V ',~lJadoJd aql uo auoz X.mm.ud >iaaaD jjni~ aql jo ,<l.uo[mu aql su!eluoo V lollnO 'aoeds uado luoummad se KI!Z) aql ol V lollnO gu!leo!pap SeA~ aq l"ql polelS -todolaAap oql 'Ie^oadde lgld ~.mucu!Imd jo am!l aql iV · ~ojjnq pUglIO~A oql puu 'pUellOA~ oql 'eo.m polsOaoj oql sossudmoouo ouoz Xautuud oq~L 'puetlOA~ ueq.m/ge uu pu~, Jop!.uoo ue!aed!J polsmoj u sumluoo OSle XlaodoJd oq~L ',(lJodoJd s!ql jo uo!l~od tuoqmos oql q§noJql SA~OIj >tOOnD jjnl~I .LDI~I.LSI(I AVqHStAO 2q~t~IHD AAflqH 'l:).uls !(I KUIIaAO >IOmD JjnI~I aql u!ql[M luotudoloAap .~oj 9-g00~;# 1.ttmOd OSFl IeUO!l!puoD · 'looJls ol'eA.ud u jo osn oql Joj oouuug^ u puc sooueue^ >toeqlos pJe,< op!s looj (I) ouo pug SOOUeUeA qlp.~A~ 101 ql!A~ uo!l!ppv puooos o^oJD lnUle3A Joj leld ~eu!tu!Imd aq~L 'dg~I 'lo[-lls~.(I Ie!luop.~so~t ~(l!meaI Ol~U;S ol 'iSV 'lo.uls.t(I ollsls~[ Imnllno!.tflV tuo.U Xl.~odoJd oql jo ~u!uozoJ oq& · :gu!,NXOl[Oj oql po^oJddu I[ounoD AI!D uossgqueqD oql '1700~; '~;1 Hndv uo · lOllnO ouo puu sloI .moj olu[ so Joe ooJql Op!A[pqns O1 leAo.tddu leld lUU!J gu!lsonboa s! JodoloAOp oq~L AltVIAIIA~flS qVSOdOHd 01-P0# osg3 gu!uueld luotudolo^O(l zlnqlo§U[l>I quid IeU!j uo!l!ppv pul5 o^o-lo lnUleA5 1700~; 'gl ounf .~ouuP, ld ao!uos 'snoJouoD qol~ -~o~uUelAI KI!D 'lp-mq-~oD ppo~L :fflflS :IAIOItA :O,L Planning Case No. 04-10 Walnut Grove 2nd Addition Location Map Subject Property Chicory Wa Waterleaf Place E Mr. Todd Gerhardt Walnut Grove 2nd Addition June 14, 2004 Page 2 PARKS AND RECREATION The developer shall pay park dedication fees for the three new houses at the time of final plat recording. The 2004 fees are $2,800.00 per unit. GRADING, DRAINAGE & EROSION CONTROL The plans propose to grade about 30% of the site for the new house pads, a proposed private driveway and a stormwater pond. The proposed lots are located in the east central portion of the site. The proposed grading will prepare the site for look-out and walk-out house pads on Lots 2, 3 and 4, Block 1. The existing site drainage flows south toward the existing creek. The plans propose to convey the drainage from the northeast portion of the site to the private street and carry the stormwater via storm sewer to a proposed NURP pond. The remaining portion of the site will drain overland to the proposed stormwater pond and/or the creek. The applicant is proposing to use Type III silt fence along the south side adjacent to the secondary bluff creek line and type II silt fence along the east and west sides of the grading area. In addition, staff recommends that tree preservation fencing be installed at the limits of tree removal. The applicant should be aware that any off-site grading will require an easement from the appropriate property owner. UTILITIES Municipal sewer and water service is available to the site from Baneberry Way. The existing house on Lot I is already connected to municipal sewer and water. The applicant is proposing to extend sewer and water lines along the private driveway to serve Lots 2, 3 and 4. According to the City's Finance Department records, the parcel was previously assessed for one sanitary sewer and water hookup. Since the developer will be responsible for extending lateral sewer and water service to the lots, the sanitary sewer and water connection charges will be waived. However, the sanitary sewer and water hookup charges will still be applicable for each of the new lots. The 2004 trunk hookup charge is $1,458 for sanitary sewer and $2,814 for watermain. Sanitary sewer and watermain hookup fees may be specially assessed against the parcel at the time of building permit issuance. Hookup charges are based on the number of SAC units assigned by the Met Council for each lot. All of the utility improvements are required to be constructed in accordance with the City's latest edition of Standard Specifications and Detail Plates. Upon completion of the utility improvements, the utilities will be turned over to the City for maintenance and ownership. The applicant is also required to enter into a development contract with the City and supply the necessary financial security in the form of a letter of credit or cash escrow to guarantee installation of the improvements and the conditions of final plat approval. Permits from the appropriate regulatory agencies will have to be obtained, including but not limited to the MPCA, Department of Health, MCES, Carver County and Watershed District. Mr. Todd Gerhardt Walnut Grove 2nd Addition June 14, 2004 Page 3 STREETS The applicant is proposing two accesses to the proposed lots. On the northwest comer of the parcel, an existing access off Galpin Boulevard will be utilized to serve the existing house on Lot 1. Another proposed new access off Baneberry Way will be servicing Lots 2, 3 and 4 as a private street. As such, the private street easement must of 30-feet wide with 20 feet of hard- surface pavement and built to a 7-ton design. The developer must submit an inspection report certifying that the private street is built to a 7-ton design. The applicant is proposing a hammerhead turnaround. At this stage, the Engineering Department and the Fire Marshal are fine with the proposed turnaround and the removal of the existing temporary cul-de-sac at the end of Baneberry Way. COMPLIANCE TABLE Frontage Depth Area Code 90 125 15,000 Lot 1 104 250 26,051 Lot 2 61.01' 250 15,247 Lot 3 60.1' 250 15,019 Lot 4 60.9* 250 15,219 Outlot A 41,198 Galpin Boulevard 21,866 Total 134,600 *A lot width variance ss being approved with the plat for Lots 2, 3 and 4. REVIEW CONDITIONS OF APPROVAL 1. At the time of final plat recording, the developer shall pay full park dedication fees for the three lots that are subject to park dedication fees. * This condition shall be modified as follows: The developer shall pay $8,400.00 in park dedication fees at the time of final plat recording. 2. Adjust the lot line(s) to assure that all lots meet or exceed the 15,000 square-foot minimum lot area. * This condition has been met. 3. Individual sewer and water services must be provided for Lots 1-4 and indicated on the plans. *This condition has been met. 4. A final grading plan and soils report must be submitted to the Inspections Division before permits will be issued. * This condition still applies. Mr. Todd Gerhardt Walnut Grove 2nd Addition June 14, 2004 Page 4 5. The old individual sewage treatment site for the existing home must be abandoned in accordance with MPCA regulations. *This condition still applies. A 10-foot clear space must be maintained around fire hydrants, i.e. street lamps, trees, shrubs, bushes, Qwest, Xcel Energy, Cable TV and transformer boxes. This is to insure that fire hydrants can be quickly located and safely operated by firefighters. Pursuant to Chanhassen City Ordinance #9-01. * This condition still applies. 7. "No Parking Fire Lane" signs will be required on the new private street. Pursuant to Chanhassen Fire Prevention Policy #06-1991. Copy enclosed. * This condition still applies. 8. Conservation easements shall be dedicated over all areas within the Bluff Creek primary zone. *This condition is duplicated by conditions 16 and 17 and can be deleted. Tree preservation fence shall be installed at the edge of the grading limits prior to any construction. Fencing shall protect trees on proposed lots as well as trees in neighboring properties located next to the grading limits. * This condition shall be modified as follows: Tree preservation fence shall be installed at the edge of the grading limits prior to any construction. Fencing shall protect trees on proposed lots as welt as trees in neighboring properties located next to the grading limits. 10. Any trees lost due to construction that are not shown as such on plans shall be replaced at a rate of 2:1 diameter inches. * This condition still applies. 11. Applicant shall submit landscape plans for review and approval prior to final plat approval. A minimum of one overstory tree will be required in the front yard of each lot. * This condition and condition 12 shall be combined as follows: A minimum of one overstory tree will be required in the front yard of each lot. One overstory tree, two understory trees, and four shrubs shall be planted along Galpin Boulevard on Lots 2 and 3. 12. Bufferyard plantings are required along Galpin Boulevard. Planting requirements are: 1 overstory tree, 2 understory trees, and 4 shrubs. * This condition shall be combined with the previous condition. Mr. Todd Gerhardt Walnut Grove 2nd Addition June 14, 2004 Page 5 13. A final grading plan and soils report must be submitted to the Inspections Division before permits will be issued. * This condition still applies. 14. A wetland buffer 0 to 20 feet in width (with a minimum average of 10 feet) shall be maintained around the wetland. The wetland buffer shall be 0 along the east side of the wetland and 20 feet on the north and west sides. Wetland buffer areas shall be preserved, surveyed and staked in accordance with the City's wetland ordinance. The applicant shall install wetland buffer edge signs, under the direction of City staff, before construction begins and shall pay the City $20 per sign. * This condition still applies. 15. The grading and erosion control plan shall show the actual wetland buffer widths proposed to meet the minimum average buffer width requirements as well as the 40-foot wetland buffer setback. All structures shall maintain at least a 40-foot setback from the edge of the wetland buffer or, if no buffer is to be preserved, from the delineated wetland edge. * This condition still applies. 16. The primary zone boundary shall be amended to include the wooded area in the rear (westernmost) portion of Lot 4. * This condition still applies. 17. A conservation easement shall be dedicated over the primary zone. All structures shall maintain at least a 40-foot setback from the primary zone. No disturbance of the site shall occur within the first 20 feet of the setback. Open space shall comprise 100% of the primary zone. * This condition still applies. 18. The proposed development shall maintain existing runoff rates. On-site stormwater ponding shall be sufficient to meet all City water quality and quantity standards. * This condition has been met. 19. A manhole with a two-foot sump shall be installed as the last road-accessible structure prior to discharge into the stormwater pond. * This condition has been met. 20. Riprap and geotextile fabric shall be installed at the flared end sections of the inlet and outlet of the storm water pond. * This condition still applies. Mr. Todd Gerhardt Walnut Grove 2nd Addition June 14, 2004 Page 6 21. Drainage and utility easements shall be provided over all existing wetlands, wetland buffer areas and storm water infrastructure. * This condition has been met. 22. A drainage and utility easement shall be dedicated over the 9 feet either side of the property line between Lots 2 and 3 in order to accommodate access for future stormwater infrastructure maintenance. A drainage and utility easement shall be dedicated over the areas in the western portions of Lots 3 and 4 that are currently not encumbered by drainage and utility easements since water discharged from the stormwater pond will flow through this area as it moves toward the wetland. *This condition has been met. 23. Type III silt fence shall be provided adjacent to all areas to be preserved as buffer or, if no buffer is to be preserved, at the delineated wetland edge. Silt fence shall be provided as needed to prevent sediment from leaving the site. * This condition still applies. 24. Erosion control blanket shall be installed on all slopes greater than or equal to 3:1. * This condition still applies. 25. All exposed soil areas shall have temporary erosion protection or permanent cover for the exposed soil areas year round, according to the following table of slopes and time frames: Type of Slope Stabilized within Steeper than 3:1 7 days 10:1 to 3:1 14 days Flatter than 10:1 21 days These areas include any exposed soil areas with a positive slope to a stormwater conveyance system, such as a curb and gutter system, storm sewer inlet, temporary or permanent drainage ditch or other natural or man-made systems that discharge to a surface water. * This condition still applies. 26. Street cleaning of soil tracked onto public streets shall include daily street scraping and street sweeping as needed. * This condition still applies. 27. Based on the proposed developed area of approximately 3.09 acres, the estimated total SWMP fee, due payable to the City at the time of final plat recording, is $11,041. Mr. Todd Gerhardt Walnut Grove 2nd Addition June 14, 2004 Page 7 * This condition shall be modified as follows: Based on the proposed developed area of approximately 1.64 acres, the estimated total SWMP fee, due payable to the City at the time of final plat recording, is $3,360.00. 28. The applicant shall apply for and obtain permits from the appropriate regulatory agencies (e.g., Riley-Purgatory-Bluff Creek Watershed District, Minnesota Pollution Control Agency, Minnesota Department of Natural Resources (for dewatering), Minnesota Department of Health, Carver County, Metropolitan Council Environmental Services, etc. and comply with their conditions of approval. * This condition still applies. 29. Prior to final plat approval, a professional civil engineer registered in the State of Minnesota must sign all plans. * This condition still applies. 30. Sanitary sewer and water hookup charges are applicable for each of the new lots. The 2004 trunk hookup charge is $1,458 for sanitary sewer and $2,814 for watermain. Sanitary sewer and watermain hookup fees may be specially assessed against the parcel at the time of building permit issuance. Hook-up charges are based on the number of SAC units assigned by the Met Council for each lot. * This condition still applies. 31. The applicant will be required to meet the existing site runoff rates for the 10-year and 100- year, 24-hour storm events. The proposed pond must be designed to National Urban Runoff Program (NURP) standards. The storm sewer must be designed for a 10-year, 24-hour storm event. Drainage and utility easements shall be dedicated on the final plat over the public storm drainage system including ponds, drainage swales, and wetlands up to the 100-year flood level. The minimum easement width shall be 20 feet wide. * This condition has been met. 32. Tree preservation fencing must be installed at the limits of tree removal. The applicant should be aware that any off-site grading will require an easement from the appropriate property owner. * This condition is a duplicate and can be deleted. 33. The applicant must enter into a development contract with the City and supply the necessary financial security in the form of a letter of credit or cash escrow to guarantee installation of the improvements and the conditions of final plat approval. * This condition still applies. Mr. Todd Gerhardt Walnut Grove 2nd Addition June 14, 2004 Page 8 34. Submit detailed construction plans and specifications for the public utility improvements before final platting. * This condition has been met. 35. Construct public utility improvements in accordance with the City's latest edition of Standard Specifications and Detail Plates. * This condition has been met. 36. Installation of the private utilities for the site will require permits and inspections through the City's Building Department. * This condition still applies. 37. Seed and mulch or sod the site within two weeks of grading. Submit a haul route for City approval prior to any hauling. * This condition still applies. 38. On a. the grading plan: Revise the side slopes along the east side of the private drive to be a maximum of 3:1 or install a retaining wall. b. Add Type III silt fence along the secondary bluff creek zone line on the south side and Type II silt fence along the west and east sides of the grading area. c. Show a minimum 75-foot rock construction entrance. d. Show all existing and proposed easements. e. Add a bench mark. f. Show the storm sewer manhole rim and invert elevations. * This condition has been met. 39. On the utility plan: a. Show the proposed utility lines 10 feet inside the property tine. b. Add a note "connection to existing manhole must be core drilled." c. Show sanitary manhole rim and invert elevations. d. Show all existing and proposed utility easements. e. Show the location of existing water and sanitary services to Lot 1. * This condition has been met. 40. On the street and storm plan: a. Last storm manhole discharging to the pond must include a 3-foot sump. b. Show the proposed and existing street easements. * This condition has been met. Mr. Todd Gerhardt Walnut Grove 2nd Addition June 14, 2004 Page 9 41. Add a legend to the plans. * This condition has been met. 42. The driveway easement must be 30 feet wide with 20 feet of hard-surface pavement and built to a 7-ton design. * This condition still applies. 43. Submit an inspection report certifying that the private street is built to a 7-ton design. * This condition still applies. 44. Elevation of lowest house opening must be three feet above high water level of the proposed pond. * This condition shall be revised as follows: Elevation of lowest house opening must be two feet above high water level of the proposed pond. 45. A 30-foot wide public drainage and utility easement must be dedicated on the final plat over the public sewer and water lines. * This condition has been met. 46. Structure setbacks shall comply with the following table: Setbacks: front, rear, side, Bluff Creek primary zone, wetland buffer Lot 1 30, 30, 10, na, na Lot 2 30, 30, 9, na, na Lot 3 30, 30, 9, 40, 40 Lot 4 30, na, 9, 40, 40 * This condition still applies. In addition, based on review of the development construction plans, the following conditions are recommended: * Show the watermain pipe size and type on the watermain profile sheet. · Add the City erosion control fence detail plate no. 5300. RECOMMENDATION Mr. Todd Gerhardt Walnut Grove 2nd Addition June 14, 2004 Page 10 Staff recommends that the City Council adopt the following motion: "The City Council grants final plat approval of Planning Case #04-10 creating four lots and one outlot, with lot width variances for Lots 2, 3 and 4 and a one-foot side yard setback variance for Lots 2, 3 and 4, subject to the following conditions: 1. The developer shall pay $8,400.00 in park dedication fees at the time of final plat recording. 2. A final grading plan and soils report must be submitted to the Inspections Division before permits will be issued. 3. The old individual sewage treatment site for the existing home must be abandoned in accordance with MPCA regulations. A 10-foot clear space must be maintained around fire hydrants, i.e. street lamps, trees, shrubs, bushes, Qwest, Xcel Energy, Cable TV and transformer boxes. This is to insure that fire hydrants can be quickly located and safely operated by firefighters. Pursuant to Chanhassen City Ordinance #%01. 5. "No Parking Fire Lane" signs will be required on the new private street. Pursuant to Chanhassen Fire Prevention Policy #06-1991. Copy enclosed. Tree preservation fence shall be installed at the edge of the grading limits prior to any construction. Fencing shall protect trees on proposed lots as well as trees in neighboring properties located next to the grading limits. 7. Any trees lost due to construction that are not shown as such on plans shall be replaced at a rate of 2:1 diameter inches. o A minimum of one overstory tree will be required in the front yard of each lot. One overstory tree, two understory trees, and four shrubs shall be planted along Galpin Boulevard on Lots 2 and 3. 9. A final grading plan and soils report must be submitted to the Inspections Division before permits will be issued. 10. A wetland buffer 0 to 20 feet in width (with a minimum average of 10 feet) shall be maintained around the wetland. The wetland buffer shall be 0 along the east side of the wetland and 20 feet on the north and west sides. Wetland buffer areas shall be preserved, surveyed and staked in accordance with the City's wetland ordinance. The applicant shall install wetland buffer edge signs, under the direction of City staff, before construction begins and shall pay the City $20 per sign. 11. The grading and erosion control plan shall show the actual wetland buffer widths proposed to meet the minimum average buffer width requirements as well as the 40-foot wetland buffer setback. All structures shall maintain at least a 40-foot setback from the edge of the wetland Mr. Todd Gerhardt Walnut Grove 2nd Addition June 14, 2004 Page 11 buffer or, if no buffer is to be preserved, from the delineated wetland edge. 12. The primary zone boundary shall be amended to include the wooded area in the rear (westernmost) portion of Lot 4. 13. A conservation easement shall be dedicated over the primary zone. All structures shall maintain at least a 40-foot setback from the primary zone. No disturbance of the site shall occur within the first 20 feet of the setback. Open space shall comprise 100% of the primary zone. 14. Riprap and geotextile fabric shall be installed at the flared end sections of the inlet and outlet of the storm water pond. 15. Type III silt fence shall be provided adjacent to all areas to be preserved as buffer or, if no buffer is to be preserved, at the delineated wetland edge. Silt fence shall be provided as needed to prevent sediment from leaving the site. 16. Erosion control blanket shall be installed on all slopes greater than or equal to 3:1. 17. All exposed soil areas shall have temporary erosion protection or permanent cover for the exposed soil areas year round, according to the following table of slopes and time frames: Type of Slope Stabilized within Steeper than 3:1 7 days 10:1 to 3:1 14 days Flatter than 10:1 21 days These areas include any exposed soil areas with a positive slope to a storm water conveyance system, such as a curb and gutter system, storm sewer inlet, temporary or permanent drainage ditch or other natural or man-made systems that discharge to a surface water. 18. Street cleaning of soil tracked onto public streets shall include daily street scraping and street sweeping as needed. 19. Based on the proposed developed area of approximately 1.64 acres, the estimated total SWMP fee, due payable to the City at the time of final plat recording, is $3,360.00. 20. The applicant shall apply for and obtain permits from the appropriate regulatory agencies (e.g., Riley-Purgatory-Bluff Creek Watershed District, Minnesota Pollution Control Agency, Minnesota Department of Natural Resources (for dewatering), Minnesota Department of Health, Carver County, Metropolitan Council Environmental Services, etc. and comply with their conditions of approval. 21. Prior to final plat approval, a professional civil engineer registered in the State of Minnesota must sign all plans. 22. Sanitary sewer and water hookup charges are applicable for each of the new lots. The 2004 trunk hookup charge is $1,458 for sanitary sewer and $2,814 for watermain. Sanitary sewer Mr. Todd Gerhardt Walnut Grove 2nd Addition June 14, 2004 Page 12 and watermain hookup fees may be specially assessed against the parcel at the time of building permit issuance. Hook-up charges are based on the number of SAC units assigned by the Met Council for each lot. 23. The applicant must enter into a development contract with the City and supply the necessary financial security in the form of a letter of credit or cash escrow to guarantee installation of the improvements and the conditions of final plat approval. 24. Installation of the private utilities for the site will require permits and inspections through the City' s Building Department. 25. Seed and mulch or sod the site within two weeks of grading. Submit a haul route for City approval prior to any hauling. 26. The driveway easement must be 30 feet wide with 20 feet of hard-surface pavement and built to a 7-ton design. 27. Submit an inspection report certifying that the private street is built to a 7-ton design. 28. Elevation of lowest house opening must be two feet above high water level of the proposed pond. 29. Structure setbacks shall comply with the following table: Setbacks: front, rear, side, Bluff Creek primary zone, wetland buffer Lot 1 30, 30, 10, na, na Lot 2 30, 30, 9, na, na Lot 3 30, 30, 9, 40, 40 Lot 4 30, na, 9, 40, 40 30. Show the watermain pipe size and type on the watermain profile sheet. 31. Add the City erosion control fence Detail Plate No. 5300. ATTACHMENTS 1. Final Plat. g:\plan\2004 planning cases\04-10 - walnut grove 2nd addition\walnut grove 2nd fp.doc © 0 .......... lc, R. b'~T. ~--bT. WALNUT GROVE 2ND ADDITION BLOCK / 4 OUTLOT A ? / / / / / /