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5.9 ( ITEM 5.9. MEMORANDUM ityof �/ Jlk River TO: Planning Commission FROM: Steven B. Ach, City Planner.,��� iJ DATE: May 28, 1996 C'--- SUBJECT: Preliminary Plat Request by Phoenix Enterprises, Public Hearing Case No. P 96-3 Issue Request for preliminary plat approval to subdivide approximately 2 acres into 4 single family lots. Location 194th Avenue alignment and Baldwin Street (north terminus of Baldwin Street in the Hillside Estates Addition). • Zoning/Land Use Rle (Single Family Residential) /MR (Medium Density Residential. Attachments • Letter from the City Engineer dated May 22, 1996 • Location Map • Zoning Map • Preliminary Plat • Concept for surrounding property Overview The entire Hillside Estate area was originally proposed as a planned unit development and had a concept plan for approximately the 200 acre area which it covered. The original concept plan (see attached), proposed the extension of Baldwin Street north of its existing terminus to tie into a future street system which would be included in a later phase of Hillside Estates. The proposed plan is to modify the original concept by terminating Baldwin Street making it a cul-de-sac to serve the proposed four lots. O 13065 Orono Parkway • P.O. Box 490 • Elk River, MN 55330 • (612) 441-7420 • Fax: (612) 441-7425 Memo to the Planning Commission Page 2 May 28, 1996 The developers have also provided a revised concept plan for the area • immediately north of Baldwin Street if it was to be cul-de-saced. Although this is a concept, staff has spent a little time reviewing the plan to see how it would fit in if Baldwin Street was to be cul-de-saced. The concept plan as prepared presents a few concerns with the reverse curves included on the street design, however, staff believes that the concept could be revised to satisfy these initial concerns. Lot Dimensions The proposed lots range in size from approximately 16,000 square feet up to 20,000 square feet in area. All four of the lots meet the minimum lot size requirement in the Rle zoning district, as well as the frontage requirement. Typically, staff looks at each residential lot to determine if a 50' x 50' house pad can be placed on each of the proposed lots. Lot 3 of the proposed plat has a drainage and utility easement along the rear of the lot that may have to be modified in order to accomplish a 50' building pad without having the building pad encroach into the drainage and utility easement. Cul-de-Sac Length City ordinance allows cul-de-sacs to be a maximum of 700' in length • measured from the centerline of each of the streets. The proposed cul-de-sac would be approximately 600' in length which falls within the guidelines of the ordinance. Street Name When the lots along Baldwin Street were originally platted, the street name, along with the addressing was done based on the concept plan of Baldwin Street extending further north. If Baldwin Street is now to become a cul-de- sac, the street name will have to change to Baldwin Court, which will require all of the residents along this street to change their address. The City will be responsible for notifying the police, fire and other 911 emergency response services of the change in address. However, the homeowners will have to take it upon themselves to change their address on their license and other personal items. If the plat is approved, staff will notify each of the residents of the change in the street name from Baldwin Street to Baldwin Court. Drainage and Utilities Please see the attached report from Terry Maurer, explaining the issues associated with utilities being extended further north to serve future phases of the Hillside Addition. 0 s:\planning\pc\p96-3.doc Memo to the Planning Commission Page 3 May 28, 1996 Recommendation IIIIt is recommended the Planning Commission recommend approval of the preliminary plat request by Phoenix Enterprises to subdivide approximately 2 acres into 4 single lots with the following conditions: 1. If it is determined that the lot lines in the proposed plat need to be adjusted to accommodate the extension of the utilities further north as requested by the Elk River Utilities Department, this be accomplished prior to recording the plat. 2. Developer's Agreement be prepared, outlining the terms and conditions for plat approval and installation of improvements. 3. Park dedication in the payment of cash for each of the four lots in the plat be paid prior to releasing the final plat for recording. 4. Water availability charge in the amount of$300 per lot be paid to Elk River Utilities prior to releasing the final plat for recording. Developer should check with Elk River Utilities for any additional charges relative to water connection fees and electric services. • 5. A surface water management fee in the amount required by the City at the time of final plat be paid prior to recording the plat with Sherburne County. 6. A detailed erosion control plan be submitted and approved by the City Engineer prior to commencing any grading on site. 7. Prior to issuance of any building permits, a development plan be submitted and approved by the City Engineer. 8. Developer reimburse the City for costs associated with reviewing the plat prior to releasing the plat for recording. 9. The developer provide an acceptable financial guarantee to the City to cover the cost associated with the utility and street improvements. 10. Upon completing all improvements and having them accepted by the City, a warranty bond in the amount of 25% shall be submitted to the City for a one year period. 11. The drainage and utility easement on Lot 3, Block 1, be adjusted to allow a 50' deep building pad without encroaching into the drainage • and utility easement. s:\planning\pc\p96-3.doc Memo to the Planning Commission Page 4 May 28, 1996 12. A street light be provided at the end of the cul-de-sac as requested by • Elk River Utilities. • • s:\planning\pc\p96-3.doc May 22, 1996 • _ File: 230-319-11 CONSULTING ENGINEERS 1326 Energy Park Drive Mr. Steve Ach City Planner Sr.Paul,MN 55108 City of Elk River 612-644-4389 13065 Orono Parkway 1-800-888-2923 P.O. Box 490 Fax:612-644-9446 Elk River, MN 55330 RE: HILLSIDE ESTATES 6TH EDITION Dear Mr. Ach: As requested, we have reviewed the preliminary plat of Hillside Estates 6th Edition. It was prepared by Lot Surveys Company, Inc., and dated April 30, 1996. Based upon our review and comments received at the Staff Review meeting, we offer the following comments: CIVIL ENGINEERING ENVIRONMENTAL 1. Hillside Estates 6th Addition is a proposed cul-de-sac on the north end of Baldwin MUNICIPAL Street, which is Hillside Estates 2nd Addition. The proposed cul-de-sac consists PLANNING of four lots. This is a change from the original sketch of the entire Hillside area •SOLID WASTE which proposed Baldwin Street to continue northerly. STRUCTURAL SURVEYING 2. The Developer's intent would be to remove approximately 50 feet to 100 feet of TRAFFIC existing Baldwin Street and to install a vertical curve with the road grade TRANSPORTATION proceeding downward into the proposed cul-de-sac. ELECTRICAL/MECHANICAL 3. One of the biggest issues discussed at both the Staff Review meeting and a ENGINEERING: follow-up meeting with the Developers is whether or not to loop the watermain HVAC POWER DISTRIBUTION through the cul-de-sac to the north plat line, anticipating continuing it further north SCADA when the area above the 6th Addition is platted. In addition, if the watermain is SYSTEM CONTROLS looped, Glen Sundeen of the Elk River Municipal Utilities has indicated a desire to loop the electrical service. From the water utility perspective, looping of the watermain provides redundancy in the case of a break, less chance of stagnant water complaints because of the elimination of the dead end, better fire flow, since, in the case of a fire, water can be fed from both directions. From the Developer's perspective, looping of the watermains would cause harm to the value of the cul-de-sac lots by removing a swath of mature Oak trees. The elevation difference from the cul-de-sac to the rear lot line is approximately 16 feet, 978 at the cul-de-sac and 962 at the rear lot corner. Looping of the watermain would require OFFICES IN: approximately 20 feet - 30 feet wide swath of trees to be removed, so the equipment could operate and material could be stockpiled while the watermain is being •MINNEAPOLIS PRIOR LAKE ST.PAUL 230/319-2204.may WASECA An Equal Opportunity Employer Mr. Steve Ach • May 22, 1996 Page Two installed. Also, the sketch plan that the Developer has provided, showing how the area north may be platted, does not lend itself to a contiguous corridor for looping the watermain. I would point out that this northern area is only a sketch plan and perhaps the lot lines could be adjusted. We have made a site visit to the area to review the type and quality of vegetation. It appears there are pockets of dead oak trees that fall approximately mid lot of the proposed addition. The live and very mature stands of trees appear to be along the lots lines. Perhaps the County Forester could be asked to review the area and comment on the relative health and value of the trees that would be affected by the looping of the utilities. It is unclear to me how to weigh the benefits of looping utilities versus the detriment to the development of clearing the trees necessary for this looping. 4. Storm drainage from this development would be handled through a continuation of the series of low areas that are hooked together by culverts conveying storm water runoff north to a relatively large depression. At some point, we would have to see detailed storm drainage calculations showing how this fits into the overall storm • drainage plan for the Hillside Development. 5. At this point, no grading plan has been submitted. As this project proceeds, a grading plan will need to be reviewed and approved followed by a development plan. If you have any questions regarding this comments, please call. Sincerely, MSA, CONSULTING ENGINEERS • laurdi Terry J. Maurer, P.E. TJM:pd • 230/319-2204.may HILLSIDE ESTATES SIXTH ADDITION CITY OF ELK RIVER SHERBURNE COUNTY, MN. "ICINITY MAP SEC 27.1 33.3 25 �� • ,., 292,58 0•00 / \\ i sw 6 i s2'y� ..,. - 19Ns 9307• _ s1+ - ,i, ax t�J3 \ \11.. DayAtO 1310"6 10).4 /�, t 1 `954. �Q�� I \ . yK .,i a}>.. .' \^ I i 0. ' rs `ae60 / ' �� / /2, P 11 'kl 'Y J.j. �eyM14--I I-�:J�J2, t'. 45 $ n3 inrC CN A: roe,3 nroi I C\.� -i.'g Coa�Aiu ,ASPMENT '4'3' \` ,'�, a.z3c.,J•�*-'.`��If. ,� $ �.'' SCALE P4 FEET �'; BALDWIN A• l •� a I 50 0 50 100 S sP �; ST. NW. 1 1',p 4 ''x $ ---:4-% `———— I I NCH-50 FEET FOR THE PURPOSES OF TMS PLAT.THE ; /• °1v', ,eie _ _xesr__- ry° .--:::‘,.-V E22.ACC.. _A,�.r, ;y__—_-__—— . s--` Y.a --i- • NORTH LINE OF THE PLAT OF HILLSIDE 2:1.CO°IEs`"x""-"Iv-- --___ 02/9 2 60.04 ____ —.7:7_ — -°!Wig"- w1a+ ..I I—_ ESTATES SECOND ADDITION IS ASSUMED ~a y ! cwc°gar t , ''.'' 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