Loading...
Resolution 2014-78CERTIFICATION STATE OF MINNESOTA ) ) ss COUNTY OF CARVER ) I, Karen J. Engelhardt, duly appointed and acting Deputy Clerk for the City of Chanhassen, Minnesota, do hereby certify that I have compared the foregoing copy of Resolution No. 2014-78 "A Resolution Approving Metes and Bounds Subdivision Creating Two Parcels at 2061 West 651" Street" adopted by the Chanhassen City Council on November 24, 2014 with the original copy now on file in my office and have found the same to be a true and correct copy thereof. Witness my hand and official seal at Chanhassen, Minnesota, this 24' day of November, 2014. k/en Eng lh� dt, Deky Clerk CITY OF CHANHASSEN CARVER AND HENNEPIN COUNTIES, MINNESOTA DATE: November 24, 2014 MOTION BY: Ernst RESOLUTION NO: 2014-78 SECONDED BY: McDonald A RESOLUTION APPROVING A METES AND BOUNDS SUBDIVISION CREATING TWO PARCELS AT 2061 WEST 65TH STREET WHEREAS, John J. and Kimberly E. Corey have requested a subdivision of the property into two lots of 15,165 square feet and 15,159 square feet; and WHEREAS, the Chanhassen City Council held a public hearing on November 24, 2014, and found the plan consistent with the Chanhassen Comprehensive Plan and Zoning ordinance. NOW, THEREFORE, BE IT RESOLVED that the Chanhassen City Council hereby approves the metes and bounds subdivision of 2061 West 65rd Street (Planning Case #2014-30) for John J. and Kimberly E. Corey for property legally described as Lot 3, Block 2, Moline's Addition, Carver County, Minnesota, subject to the following conditions: Building The existing structure on proposed Parcel l must be provided with sanitary sewer connection — permit required. 2. Properties must be provided with separate sewer and water services. 3. Existing Subsurface Sewage Treatment Site on proposed Parcel 1 must be properly discontinued and abandoned — permit required. Engineering The City Attorney shall draft and the developer shall execute a "Grant of Permanent Easement for Public Drainage and Utility Purposes" document. This document shall be recorded with the metes and bounds subdivision. 2. A roadway, drainage and utility easement must be dedicated over the portion of the existing cul-de-sac within the property and 15 feet beyond the edge of the road. 3. Prior to recording the subdivision the developer shall pay the $45 GIS fee: $25 (subdivision) plus $101parcel. 4. Prior to recording the subdivision a $10,000 security must be provided to ensure that the street is restored. The security can be released when the city determines that the patch is in good condition after one freeze -thaw cycle. 5. Sewer and water hookup charges are due for the new lot, a portion of which shall be collected before the metes and bounds subdivision is recorded: Water: 1 unit x $1,886/unit = $1,886 Sewer: 1 unit x $664/unit = $664 6. If the final subdivision submittals are received after 2014, all fees shall be recalculated based on the rates in effect at that time. 7. The remaining 70% of the sanitary sewer and water hookup fees must be paid with the building permit at the rate in effect at that time. 8. A plumbing permit is required for the private storm sewer; the plumbing inspector will inspect the connection to the city storm sewer manhole. 9. On Parcel 1, the proposed home style as required by City Code Section 18-40 (4) 2 (iii) is a slab -on -grade home. Based on Interstate Geotechnical Engineering's observations, the groundwater elevation is 1.8 feet below the ground elevation of the soil boring. The developer must verify the surface elevation of the boring location to determine the elevation of the groundwater; the lowest floor must be minimum three feet above that elevation per City Code Section 18-40 (4) 2 (i). Environmental Resource Specialist 1. Tree protection fencing will be required around any preserved trees. It shall be installed prior to grading and located at the drip lines of the trees. 2. Parcel 1 is required to have one tree planted in the front yard. Parks 1. Park fees of $5,800.00 shall be paid for each new single-family lot prior to the recording of the property deed. Planning 1. Deeds shall submitted to the city for review and recorded at Carver County for the two parcels. 2. A building permit shall not be issued unless all soil corrections have been completed as indicated in the attached exhibits titled "Subsurface Soil Investigation" dated October 25, 2014 and November 13, 2014. Water Resource Coordinator 1. Total surface water management fees due prior to recording the property deed are $1,914.55. Passed and adopted by the Chanhassen City Council this 24h day November of 2014. ATTEST: Todd Gerhardt, City Clerk/Manager YES NO Furlong None Ernst Laufenburger McDonald Tjomhom Thomas A. Furlong, Mayor cS ABSENT None Interstate Geotechnical Engineering, Inc Patrick J Hines, PE 81671001 St S Cottage Grove MN 55016 (612)414-5770 25 October 2014 Mr James Rudos 14846 Timber Hill Road Minnetonka MN 55345 Re; Subsurface Soil Investigation Proposed Single Family Residence W of 2061 W 65`x' St, Chanhassen, Minn CITYQFCHANHASSEt RECEIVED NOV 0 4 2014 O1W1HA98EC4 PLANNING nEpr In accordance with your authorization, I have completed the above referenced investigation to determine site suitability for the proposed construction. A summary of my findings together with boring logs and my conclusions and recommendations are presented in the enclosed report. I found, as you already have been briefed, more than usual problems with the site. There is a total of 53/4 & 61/4 at the locations of Boring 1 & Probe 1A, respectively, of unsuitable soil in the form of topsoil fill, general and varying fill, and buried original humus. Below at first is a low sand content lean clay, generally dark in color, saturated, very soft to soft (w/ depth). It is "normally consolidated" (consolidated enough to only support its own weight, not additional weight of fill soils or structures above). The overburdening fill has not been inplace long enough to force further consolidation. The moisture content test in this material indicated nearly 42%, high for a lean clay. This material extends only from 53/4 to 7' in Boring 1, but from 61/4 to 83/2'in Probe IA. The first 9" of this material in Probe IA is very soft and is a borderline marl material. All of the aforementioned materials are unsuitable for structure support should be removed. I do acknowledge that excavators are often reluctant to excavate further once the buried organic soil is cleared, so understandings should be inplace at the time of gathering bids. Base soil below at first is a lean clay, a little sandy, dark gray, saturated, rather soft to medium. It has inclusions of a poorly graded (biased finer grained) sand with a few fines, also dark gray, saturated, loose to firm. Deepest soil, commencing at 11' in Boring 1, is a lean clay, rather sandy, dark gray, low gravel content, medium. Theses materials are glacial till. The sand inclusions in the upper portion are glacial outwash. All of these base mineral soils are suitable for residential construction, with conditions. Refusal to auger advancement was not encountered by boring termination depth of 23', indicating lack of bedrock to this level. Very importantly, groundwater was found in the main Boring at 1.8' (elev 961/4±). It is aquifer groundwater, but marginally so. It appears to be contained primarily in the sand inclusions at 7'+. But it also is coming from the upper soft and very soft clay, possibly from Mr James Rudos 25 October 2014 Page 2 the lower organic soil. Proper construction on the site (removing the softer lean clay, promoting good site drainage) will mitigate some of this. Thus, water found presently can be regarded as a maximum level. Slab grade of the proposed residence should be set in accordance with City requirements utilizing this level. I recommend complete removal of all unsuitable soil which is likely to be the fill and buried organic soil as encountered plus the overly soft clay found in both the boring and probe. While this amounts only to another V/4 in the vicinity of Boring 1, it is another 2'+ in the vicinity of Probe 1A. As indicated, excavators may be reluctant to excavate below organic soil level, but it is necessary (see longer discussion in the report). It is so important that full time inspection of the excavation by a soils engineer may be necessary. Of course, other zones of unsuitable soil not represented by the boring and probe could still be encountered due to the nature of small volume random sampling. Any other depths or zones of unsuitable soil should be removed as well. You could lower footings somewhat so that you have to provide less oversizing and not stray onto the neighbor's property. But footings here should not be lowered so much as to rest directly upon the suitable base soil as it is only marginally suitable. You need a little fill (2' is recommended) to spread footing loads out with depth. Footings maybe generally designed allowing the usual 2000 psf foundation bearing capacity, which will likely result in normal strip or pad footings. Special attention is again drawn to the advisory that excavations be examined by the Soils Engineer to verify soil boring results and to document adequacy of site preparation. Again this is very important as how much soft/very soft clay must be removed will require a high degree of field judgment. Fill, as used, should be tested for compaction adequacy. Soil correction should not be abated below slabs in any manner (ie, do not let the excavator try to "trench around" slab areas). Thank you for the opportunity to have been of service. If you have any questions on this, or if I can be of assistance in any additional capacity, do not hesitate to contact me at your convenience. Sincerely, TATE GEOTECHNICAL ENGINEERING, Inc a 'ck J mes, P); President enclosures pIVSC Patrick J Hines, PE DEPTH IN FEET SOIL BORING LOG 8167 100th St S Cottage Grove MN 55016 .�WFvacu 9_LLramlty xeslaence PROJECT: West of 2061 W F'Sth St Chanhassen, Minn LOG OF BORING M0: T_ SURFACE ELEb,4T10A1: 98,1 GEOLOGY N We SAMPLE LAB ,& OTHER TESTS OESCAIFT1ONAfyDCLASSIFICATION TYPE R W DE L.L. fLEAN CLAY, variably sandy, Organic (OLp•L• set_ value Black, w/- tr's mineral Soil, Topsoil N 1 HA very moist, loose to firm Fill LEAN CLAY, seat sandy, Pred Dark Gray (CL) Fill ' [elev*j2 `HA W/ st to v Organic Soil, w/ tr grave moist to e moist, loose to firm �t N CLAY, rather silty, Or,&ahic"(QL) Buried 3 HA Black, w/ small roots, tr's undecom- Humus posed vegetation, saturated, rather )orderline Sapric Peat in soft 5.75 [sl lighter, less organic w/ depth 6 LEAN CLAY, a 13tt a san y, ery ar t( l Dark Gray (CL), very soft to spft (w/ 7 , 1' 1F r; E de tt , tr cs), poor y gra a pre �sne gr, w ,is d� w/ a few fines, Dark Gray (SP)j'saturated, loose to firm banded w/ LEAN CLAY, a little sandy, 9- Dark Gray (CL), saturated, rather sof soft to medium @ 8}'+ 10 more bands of clay, less of sand, w/ depth ( LEAN CLAY, rather sandy, Dark Gray 12- (CL), w/ a little gravel 1 saturated, medium 13� 14 15 I 16 17 18 20 21 Deposit Glacial Till, w, Outwash inclusion Glacial Till WATER LEVEL MEASUREMENTS DATE 77IMF 'rs SAMPLED DEPTH CASING DEi7N CAVE-IN DEPTH DRILLING CUD LEVE WATER LEVEL 3 Oct 16:29 7 ° None 3.8' ?4 Oct I 13:51 5' 1 8e 11 11 14:35 n 15:20 to 23' 5}' 2.1' Y 1 4 1 HA Y 1 5 1 HA Y 6 FA N 17 1 FA N 1 8 1 FA t 41.9 ' e 7$' 8%13 25.6 W1[a DRILLING DATA I BreeJ Clear, V. CrewChist Ft ethod: 3" Hand & 4" Power Flight* Augers *Mobile B-31 Drill Rigon Dodge Power Wagon Cr�nced: 23 Oct. er goring Completed: 24 October 2014 OV" nuain Cx huV (continued) .. fte--kXN 816; 1000 St S Cott'�g� ( retia MX 95016" Proposed Se Family Residence PROJECT: West of 2061 65tinglh St. Chanhassen, Minn LOG OF BORING NO: 1 ELEVATION: 98.1 SAMPLE LAB & OTHER TESTS GEOLOGY N WS L L DESCRIPTION AND CLASSIFICATION ># TYPE R W OE P.L. CLAY, rather sandy, Dark Gray (CL Glacial N 9 FA r to a little gravel Till rated, medium nd of Boring - No Refusal TDFSURFACE hole void backfilled w/ native ings mixed w/ Bentonite on 24 ber 2014 obe 1A - Elev = 97.8 Topsoil Fill, Fill.(S,I:.iess than Boring 1), Buried Humus Lean Clay, possibly Mari,-'-� t 30 Gray, saturated, very soft 7'-8$' Lean Clay, rather silty, Dark 31, Ir I rqy, saturated, verb soft to soft 8V -10j' Lean Clay,. w/ band inclusions, 32 " mrk:GYzy; saturated, soft to medium i 33 Probe put down by power flight auger I method on 24 October 2014 6 ummed!-:` s.l 34 ately backfilled w/ native cuttings mixed w/ Bentonite 35J 36�37 38- 39- 3944142 40- 41- 42 i 43 441 45� 46- I I g� II av d x a p pm ll, Lw� Ln Ln n MW 014 biml ®b�� O; .04 W , %0 � MQ H m co g C k' cOrcC77 OQ 0 E<iv ty&, �� b a+ m P En N 44 cd .0 O W. bo 0N In m Emil i O N OCH Nco W O O O W Ey M L m U O G b co o a LL m OU a m awl A z 1 6 C y z W D i1 ~ Pq H � w a s u q d ri U H O O u g� Lina II av d x a p pm ll, MW Lina FROM : INTERSTATE GEOTECHNICAL EMG PHONE NO. : 651 769 2467 Nov. 13 2014 11:05AM P2 Inter Ftate Geotechnicak Engineering, Inc Patrick J Hines, PE $167100%h St S Cottage Greve MN 55016 (612)414-5770 13 November 2014 Mr James Rudos 14846 Timberhill Road Minnetonka MN 55345 Re: Subsurface Soil Investigation Proposed Single Family 1Residernce W of 2061 W 65t° St, Chanhassen, Minn This is in response to your contact of recent regarding groundwater on this project. As you know, I investigated the lot last month and issued a report dated 25 October 2014.1 found a total of 7 & WY2' of unsuitable soil at the locations of Boring i & Probe IA, respectively, in the form of topsoil fill, general and varying fill, buried original humus and overly soft clay or marl. First suitable base soil is a loose to firrr, sand or a soft to medium lean clay, I recommended removing these materials andplacing controlled fill, noting that you will have to seriously control groundwater in the process. Regarding groundwater, I found it very high on this site - at a stabilized level of 1.8', As I understand it, The City of Chanhassen has asked if this water Ievel will change as a result of site correction. I used as a stabilized water level the 1.8' found a day after the hand auger phase was completed. I had encountered water while drilling aard did achieve the base granular soil that first day. When I diad the power auger phase, water was creeping up to nearly the same level a few hours later, so I felt that the 1.8' is valid. I believe that, when you correct this lot, controlling groundwater, and compacting fill, mcstlikely granular, the groundwater will soon rebound to its original level - IS as found in my boring. If you construct ordinary and good site drainage on your finished project, groundwater will not be affected by any artificial recharge the result of your activities. If you have any additional questions on this, or if I can be of assistance in any additional capacity, do not hesitate to contact me at your convenience. Sincerely, INTERSTATE G1~4)TECIINIe€tt,313T8ERINCr, lac m n OR b{'l�. fB l }:� C� Ci.t-�i (i't : {WTI 7 11 s i.�.t., C9i GIrtGATG!�a -Q 18 S.' .. rr rt , G��&Bp � ¢ l'��'ut(%f 1".';' �:�-.,,.-., .,y r, r -r; �vv ti- :"' :i:: ,ficv�lU��.f„�ettD,cCT {a]�i .i .11 i"115 If?'1ALU_YLC "i- 0PROFESSIONAL Patrick 7 Hines, PP.-A.tZt a� WEE i Oi • i clic LAW 3 OF i tc SiATE OF ia9li�hcS4TA President C F1 STATE Greo OP pH/SC ssro�de `b°q DATE• 13 JIIPIc '{S M11WESOTAREGAO: 12Z�&