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ApplicationTRANSMITTALS TO AGENCIES FOR COMMENTS ON DEVELOPMENT PROJECTS WITH THE CITY OF MERIDIAN Mayor Tammy de Weerd City Council Members: Keith Bird Brad Hoaglun Charles Rountree David Zaremba To ensure that your comments and recommendations will be considered by the Meridian Planning and Zoning Commission please submit your comments and recommendations to Meridian City Hall Attn: Jaycee Holman, City Clerk, by: 29 -Aug -13 Transmittal Date: August 6, 2013 File No.: PP 13-019 Hearing Date: September 5, 2013 Request: Public Hearing - Preliminary Plat approval consisting of 16 single family residential building lots and 4 common/other lots on 2.86 acres of land in the R-8 zoning district for Copperleaf Subdivision By: Providence Properties, LLC Location of Property or Project: 4505 E. Ustick Road _Joe Marshall (No FP) —Scott Freeman (No FP) —Steven Yearsley (No FP) _ Michael Rohm (No FP) —Macy Miller (No FP) _Tammy de Weerd, Mayor _Charlie Rountree, C/C —Brad Hoaglun, C/C —Keith Bird, C/C David Zaremba C/C —Sanitary Services —Building Department/ Rick Jackson _ Fire Department _ Police Department City Attorney _Community Development _ City Planner _ Parks Department _ Economic Dev. City Engineer _ Meridian School District (No FP) _ Meridian Post Office (FP/PP/SHP only) _Ada County Highway District _Ada County Development Services _Central District Health _COMPASS (Comp Plan only) _Nampa Meridian Irrig. District _Settlers Irrig. District _ Idaho Power Co. (FP,PP,CUP/SHP only) _ Qwest (FP/PP/SHP only) _ Intermountain Gas (FP/PP/SHP only) _ Idaho Transportation Dept. (No FP) _Ada County Ass. Land Records Downtown Projects: —Meridian Development Corp. Historical Preservation Comm. South of RR / SW Meridian: NW Pipeline —New York Irrigation District _ Boise-Kuna Irrigation District Boise Project Board of Control / Tim Page Your Concise Remarks: City Clerk's Office • 33 E. Idaho Avenue, Meridian, ID 83642 Phone 208-888-4433 *Fax 208-888-4218 a www.meridiancity.org OVEN N'=- Planning Division COMMISSION & COUNCIL REVIEW APPLICATION Type of Review Requested (check all that apply) D Alternative Compliance D Annexation and Zoning D Comprehensive Plan Map Amendment D Comprehensive Plan Text Amendment D Conditional Use Permit D Conditional Use Permit Modification ;STAFF USE ONLY: > q ® Development Agreement Modification D Final Plat File numbers):Q J D Final Plat Modification WIDA- 13• D Planned Unit Development r ® Preliminary Plat Project name: 42 nn D Private Street Date filed: Date complete: D Rezone D Short plat Assigned Planner, D Time Extension (Commission or Council) Related files: . - " rJ 1 mow 1 D UDC Text Amendment D Vacation (Council) - D Variance It ring date ',< 51 Commission D Council D Other Applicant Information Applicamname: Providence Properties LLC Phone: 570.7575 Fax: Applicant address: PO Box 2648 Eagle Zip: 83616 E-mail: Applicant's interest in property: D Own D Rent ®Optioned D Other Ownername: Minzio Sgroi Phone: Fax: Owneraddress: 4405 East Ustick Meridian Zip: 83646 E-mail:_ Agent name (e.g., architect, engineer, developer, representative): Kevin McCarthy. P . E , Firmname: KM Engineering LLP Phone: 639 .6939 Fax: 639.6930 Address: 9233 West a e Street Boise Zip: 83714 E-mail: kevin@kmenallp.com Primary contact is: D Applicant D Owner O Agent D Other Contact name: Contact address: Subject Property Information Phone: Fax: Zip: E-mail: Location/street address: 4405 East Ustick Road Assessor's parcel number(s): 51104121051 Township, range, section: T3N, RIE, Sec. 4 Total acreage: 2.86 Current land use: 1 existing residence. Current zoning district: R-8 remainder vacant 33 E. Broadway Avenue, Suite 102 • Meridian, Idaho 83642 Phone: (208) 884-5533 • Facsimile: (208) 888-6854 • Website: www.melidiancity.org 1 (Reit 02/08/2013) Project Description Project/subdivisionname: Copperleaf Subdivision General description of proposed project/request: Subdivide 2.86 acres into 16 buildable and 4 common lots for single-family residential nse Proposed zoningdistrict(s): R-8 (no change) Acres of each zone proposed: 2.86 (no change) Type of use proposed (check all that apply): 0 Residential 0 Commercial 0 Office 0 Industrial 0 Other Who will own & maintain the pressurized irrigation system in this development? Nampa & Meridian Trrigation Which irrigation district does this property lie within? Name a & MPri di an Trri gat i on Primary irrigation source: Surface water Secondary: Square footage of landscaped areas to be irrigated (if primary or secondary point of connection is city water): Residential Project Summary (if applicable) Number of residential units: 16 Number of building lots: 16 Number of common lots: 4 Number of other lots: 0 Proposed number of dwelling units (for multi -family developments only): 2- 3 bedrooms: n/ a 4 or more bedrooms: n/ a Minimum square footage of structure(s) (excl. garage): Minimum property size (s.f): _ Gross density (DlJ/acmtotauend): Proposed building height: Average property size (s.£): 5 . 235 Net density (DU/acre-excluding roads & alleys): 6.89 Percentage of open space provided: 17.4 Acreage of open space: 0.4 Percentage of qualified open space acreage: 13 (See Chapter 3, Article G, for qualified open space) Type of open space provided in acres (i.e., landscaping, public, common, etc): landscaping/ common - 0 . 3 Amenities provided with this development (if applicable): pedestrian connectivity to Ustick Type of dwelling(s) proposed: M Single-family Detached 0 Single-family Attached 0 Townhomes 0 Duplexes 0 Multi -family 0 Other Number of Gross floor area proposed: _ Hours of operation (days and hours): Percentage of site/project devoted to the following: Landscaping: Total number of employees: Total number of parking spaces provided: Authorization Print applicant name Applicant signature: Building: Other lots: Existing (if applicable): Building height: Paving: Number and ages of students/children Number of compact spaces provided: 33 E. Broadway Avenue, Suite 102 • Meridian, Idaho 83642 Phone: (208) 884-5533 • Facsimile: (208) 888-6854 • Website: www.meridiancity.org 2 (Rev. 02/082013) km 9233 WEST STATE STREET I BOISE, ID 83714 1 208.639.6939 1 FAX 208.639.6930 July 31, 2013 Project No.: 13-052 Sonya Watters City of Meridian 33 East Broadway Avenue, Ste. 102 Meridian, ID 83642 RE: CopperleafSubdivision —4405 East Ustick— Meridian, ID Preliminary Plat & Development Agreement Modification Narrative Dear Sonya: On behalf of Providence Properties, LLC, we are pleased to submit the attached application and required supplements for the preliminary plat and development agreement modification of Copperleaf Subdivision. Please accept this letter as the required written narrative regarding the project. This single-family residential project encompasses approximately 2.86 acres located at 4405 East Ustick in Meridian, Idaho. The site currently houses an existing residence and outbuildings, all of which will be removed as part of this project. On October 7, 2008, the City Council approved a proposal for annexation and zoning of the property (Case No. AZ -08-011). In May 2012, the owner entered into a development agreement with the City (Instrument No. 112043739) that allowed for an assisted living facility on the site. In November 2012, the development agreement was amended (Instrument No. 112117349) to allow the site to develop as a residential subdivision to include 14 single-family lots and 2 townhome lots. The attached preliminary plat application reflects utilization of the amended development agreement, but with modifications. The current developers do not wish to construct townhome units, and are hereby requesting a modification to the existing development agreement to replace the 2 previously - approved townhome lots with 2 single-family residential lots, resulting in a project total of 16 single- family residential lots and 4 common lots. In addition, the layout has been modified slightly to accommodate the current zoning requirements of 10% open space and a site amenity. The site carries a Comprehensive Plan designation of Medium Density Residential and a current zoning designation of R-8 (Medium Density Residential), which allows for up to 8 units per acre. Our proposed preliminary plat reflects a gross density of 5.59 units per acre, and a net density of 6.89 units per acre, both of which comply with the current zoning regulations. In addition, the 0.3 acres of open space proposed with this project total 13%, which meets City requirements. The developer is also proposing to provide a pedestrian pathway connecting to the sidewalk along Locust Grove, which ENGINEERS I SURVEYORS I PLANNERS www.kmengllp.com complies with the City's requirement to provide a site amenity. We are not requesting any variances to the ordinance as a part of this project. As required by ACHD, the existing driveway approaches to Ustick Road will be removed during the course of construction and the site will be served via the extension of Arch Drive in Red Feather Subdivision, which is south of this project. The public utilities providing services to this area have been contacted and none have expressed concerns with serving this project. These include the City of Meridian, Idaho Power, Intermountain Gas, CenturyLink, Cable One, and the Nampa & Meridian Irrigation District. This property has shares within the Nampa & Meridian Irrigation District, which will be utilized to provide pressure irrigation to the project. The Nampa & Meridian Irrigation has indicated that a minor pump upgrade may be necessary, but that the irrigation system serving Red Feather Subdivision, which is owned and maintained by the District, can be utilized to serve this project. There are no concerns in regards to other public services in the area, as the addition of 16 new homes within an existing residential area will not greatly impact available public services. Further, Copperleaf Subdivision will not create excessive additional requirements at public expense for public facilities and services because services will be supported by property taxes and/or fees paid directly to the service providers. At this time, there are no known health, safety, or environmental problems that currently exist or that will exist as a result of this development. Should you have questions or require further information in order to process this application, please let me know as soon as possible. Sincerely, KM Engineering, LLP Kevin McCarthy, P.E. Principal Engineer cc: Providence Properties, LLC PAGE 12 'RCt.,r 1 9233 WEST STATE STREET I BOISE, ID 83714 1 208.639.6939 1 FAX 208.639.6930 July 31, 2013 Project No. 13-052 Copperleaf Subdivision BOUNDARY LEGAL DESCRIPTION A parcel of land being a portion of Government Lot 2 and situated in the NEI/4 of Section 4, Township 3 North, Range 1 East, Boise Meridian, City of Meridian, Ada County, Idaho, and being more particularly described as follows: Commencing at an aluminum cap monument marking the north 1/4 corner of said Section 4, which bears N89044'17"W a distance of 2,649.76 feet from a brass cap monument marking northeast corner of said Section 4, thence following the northerly line of said Section 4, S89°44'17"E a distance of 1062.63 feet to a point; Thence leaving said northerly line, S00°48'17"E a distance of 48.01 feet to a 5/8 inch rebar on the southerly right-of-way line of E. Ustick Rd. and the POINT OF BEGINNING; Thence following said southerly right-of-way line, S89"44'17"E a distance of 81.07 feet to a 5/8 inch rebar; Thence following said southerly right-of-way line, 588°18'21"E a distance of 120.04 feet to a point; Thence following said southerly right-of-way line, S89°44'17"E a distance of 60.04 feet to a paint; Thence leaving said southerly right-of-way line, S00°32'25"W a distance of 542.02 feet to a 5/8 inch rebar on the northerly boundary of Redfeather Estates Subdivision No. 2, as recorded in plat book 92 at pages 10895 through 10897, official records of Ada County, Idaho; Thence following said northerly subdivision boundary, N65°53'17"W a distance of 273.76 feet to a 5/8 inch rebar; Thence leaving said northerly boundary, NOO°48'17"W a distance of 434.39 feet to the POINT OF BEGINNING. Said parcel contains 2.86 acres, more or less, and is subject to all existing easements and/or rights-of-way of record or implied. -7•-66°700 ENGINEERS I SURVEYORS I PLANNERS The Orantess harem have read, and approved the following: _ V) Title File No.: T96-40612"1(/ WARRAIV FOR VALUE RECEIVED AOL LIMITED PARTNERSHIP, an Idaho Limited Partnership GRANTOR(s), does(do) hereby GRANT, BARGAIN, SELL and CONVEY Unto: NUN210 SGROI, an unmarried man GRANTEES(s), whose current address is: 4406 Ustick Road , Meridian, Idaho 83642 the following described real property In Ada County, State of Idaho, more particularly described as follows, to wit: Fart of Lot 2 of Section 4, Township 3 North, Range 1 East of the Boise Meridian, Ada County, Idaho, described as follows: Commencing at the section corner common to Sections 33 and 34, Township 4 North, Range 1 East and Sections 3 and 4, Township 3 North, Range 1 East, Boise Meridian; thence South 89052• West 1,325.98 feet; thence South 0^14120" West 33 feat to the [ZEAL POINT OF BEGINNING= thence South 89"521 West 261.47 feet; thence South 10121 East 449.40 feet, thence South 66^171 East 272.41 feet; thence North 0^14120" Bast 559.48 feet to the REAL POINT OF BEGINNING. EXCEPT ditch and road rights of Way. 9 6 1 0 1 7 4 2 TpANSNATION TITLE 8, ADA CO. RECORDER .i. DAVID HAVAP,RO BOISE 10 ' 96 DEC 1� P�4&Granteels) TO HAVE AND TO HOLD the said premises, with their appurtanencas o tYsald t{rNr heirs and assigns forever. And the sold Grantors) does(do) hereby c df?u3novAmiHb Q rantee(a), that Grantor(s) Is/are the ownerls) in fee simple of said premises; that said prem sea are free from all encumbrances, EXCEPT those to which this conveyance Is expressly made subject and those made, suffered or done by the Granteetsl; and subject to reservations, restrictions, dedications, easements, rights of way and agreements,ltf and of record, and general taxes and assessments, (including irrigation and utility assessments, if any) for the current year, which are not Vat due and payable, and that Grantor(s) will warrant and defend the some from all lawful claims whatsoever. Dated: December 10, 1996 State of Idaho , County of Ada 1. On this 11th day of December ,1996 before me, the undersigned, a Notary Public for said State personally appeared Larry Compton know or identified to me to be the person° whose same—is subscribed to the within instrument asthe General Partner of ADL Limited Partnership, en Idaho Limited _Partnership and acknowledged to me that he executed the same as such General Partner Notary Public for the State Iaaho Residing at: Meridian. Idaho Commission Expires 6-10-95 • P' n,. a•47 ea'�4P e°aveeveee. a �OT-44 ° l'fIBLLC OF 11)?; title & Escrow, Inc. AFFIDAVIT OF LEGAL INTEREST STATE OF IDAHO) COUNTY OF ADA) I, Nunzio Siroi---L. 4405 E. Ustick Rd. (name) (address) (city) being first duly sworn upon, oath, depose and say: _ID 83646-5667 (state) 1. That I ani the record owner of the property described on the attached, and I grant my permission to: _Providence Properties _701 S. Allen St., Ste. 104 Meridian, ID 83642 (name) (address) to submit the accompanying application(s) pertaining to that property. 2. I agree to inderanify, defend and hold the City of Meridian and its employees harmless from any claim or liability resulting fiom any dispute as to the statements contained herein or as to the ownership of the property which is the subject of the application. 3. I hereby grant permission to City of Meridian staff to enter the subject property for the purpose of site inspections related to processing said application(s). Dated this � O � m ,day of t 1,, i ')- SUBSCRIBED SUBSCRIBED AND SWORN to before me the day and year first above written. -F—) I � v U L ` Notary Public for Idaho) C40TA,7 „7 (n Residing a '�-' .p -J J) "UBLIG My Commission Expires: wnp 30 —A - 33 E. Broadway Avenue. Suite 102 • Meridian. Idaho 83642 Phone: (208) 884-5533 • Facsimile: (208) 888-6854 • Website: wnw.meridiaucity.org USTICK 9233 WEST STATE STREET Plan Scale BOISE, IDAHO 83714 PHONE FAX (208) 639-6930 9 6396930COPPERLEAF SUBDIVISION DATE: 7/31/13 PROJECT: 13-052 SHEET: 1 OF 1 MERIDIAN, ID VICINITY MAP 3 05"? - CITY OF MERIDIAN PRE -APPLICATION MEETING NOTES ProjecUSubdivisionName`. Jgrni PF -par Date: City Staff: SLmU )U5}Jn . gruc _d'� Pe 1f3 Location; 4 40. e - lst c Rd. Comprehensive Plan Future Land Use Map Designation: Size of Property: 2 4,5 Design Guidelines Development Context: Proposed Use:5 (I� �ch) Proposed Zoning: — Existing Use: S(,t en'4�Existing Zoning: R,-8 Surrounding Uses, dckoot Street Buffer(s) and/or Land Use Buffer(s): 35 wf3e b ee r a lavw US h'cfC Open Space/AmenitiestPathways:rPN 5' Wida Ae a -di Access/Stub Streets/Street System: ipbit 5 ree+ 41vb +o wrsfi Sewer & Water Service: Canals/Ditches/Irrigation/Hazards: r4f, History:. A2-oK-o t 'I MAPF, 117-0+57361 j 112-II"134°i Additional Meetino Notes: Note: A Traffic Impact Study (TIS) will be required by ACHD for large commercial projects and any residential development with over '� 100 units. It is the applicant's responsibility to contact & transmit the TIS to ACHD. To avoid unnecessary delays & expedite the hearing process, applicants are encouraged to submit the TIS to ACHD prior to submitting their application to the City. Not having ACHD comments and/or conditions on large projects may delay hearing(s) at the City. Please contact Mindy Wallace at 387-6178 or Christy Little at 387-6144 at ACHD to determine if a TIS is required or for any questions in regard to ACHD conditions, impact fees and process. Other Agencies/Departments to Contact: ❑ Ada County Highway District ❑ Nampa Meridian Irrigation District ❑ Public Works Department F1Idaho Transportation Department ❑ Settler's Irrigation District ❑ Building Department ❑ Sanitary Services Company ❑ Police Department ❑ Parks Department ❑ Central District Health Department ❑ Fire Department ❑ Other: Application(s) Required: ❑ Administrative Design Review ❑ Conditional Use Permit Modification/Transfer ❑ Rezone ❑ Alternative Compliance ❑ Development Agreement Modification ❑ Short Plat ❑ Annexation ❑ Final Plat ❑ Time Extension - Council ❑ City Council Review ❑ Final Plat Modification ❑ UDC Text Amendment ❑ Comprehensive Plan Amendment - Map ❑ Planned Unit Development ❑ Vacation ❑ Comprehensive Plan Amendment- Text Preliminary Plat ❑ Variance ❑ Conditional Use Permit Private Street ❑ Other Notes: 1) Applicants are required to hold a neighborhood meeting in accord with UDC 11 -5A -5C prior to submittal of an application requiring a public hearing (except for a vacation or short plat); and 2) All applicants for permits requiring a public hearing shall post the site with a public hearing notice in accord with UDC 11-5A-50 (except for UDC text amendments, Comp Plan text amendments, and vacations). The information provided during this meeting is based on current UDC requirements and the Comprehensive Plan. Any subsequent changes to the UDC and/or Comp Plan may affect your submittal and/or application. This pre -application meeting shall be valid for four (4) months. Subdivision - 4405 East Ustick Neighborhood Meeting Sign -in Sheet July 2, 2013, 6:30 p.m. - Meridian City Hall COMMITMENT OF PROPERTY POSTING Per Unified Development Code (UDC) 11 -5A -5D, the applicant for all applications requiring a public hearing (except for a UDC text amendment, a Comprehensive Plan text amendment and/or vacations) shall post the subject property not less than ten (10) days prior to the hearing. The applicant shall post a copy of the public hearing notice of the application(s) on the property under consideration. The applicant shall submit proof of property posting in the form of a notarized statement and a photograph of the posting to the City no later than seven (7) days prior to the public hearing attesting to where and when the sign(s) were posted. Unless such Certificate is received by the required date, the hearing will be continued. The sign(s) shall be removed no later than three (3) days after the end of the public hearing for which the sign(s) had been posted. I am aware of the above requirements and will comply with the posting requirements as stated in UDC 11-5A-5. A. t Applica t/agent s gnature Date 33 E. Broadway Avenue, Suite 102 • Meridian, Idaho 83642 Phone: (208) 884-5533 > Facsimile: (208) 888-6854 • Website: www.meridiancity.org Meridian City Hall, Suite 102 33 E. Broadway Avenue Meridian, Idaho 83642 Community Development 208.887.2211 Department Address Verification Date: 7/2/13 The address information below has been researched and verified as correct by the City of Meridian Community Development Department. Project Name: Sgroi Property (Subdivision Name TBD) Address: 4405 E. Ustick Rd. Zip Code: 83646 Parcel Number: 51104121051 Acres: 2.855 T/R/S: 3N 1E 4 Owner: Nunzio Sgroi 4405 E. Ustick Rd. Meridian, ID 83646 Address Verification Rev: 04/23/12 Christen Haisty From: Jerry Hastings phastings@adaweb.net] Sent: Wednesday, July 03, 2013 11:03 AM To: Kirsti Allphin; Aaron Ballard (aballard@kmengllp.com) Subject: Copperleaf Subdivision Name Reservation July 3, 2013 Kirsti Allphin KM Engineering, LLP RE: Subdivision Name Reservation: " Copperleaf Subdivision" Dear Kirsti, At your request I have reserved the name of " Copperleaf Subdivision" for your project. I can honor this reservation only as long as your project is in the approval process. Final approval can only take place when the final plat is recorded This reservation is available for the next ten (10) years unless the project is terminated by the client or the jurisdiction or the conditions of approval have not been met. In which case the name can be re -used by someone else. Sincerely, Jerry Hastings, P.L.S. County Surveyor Ada County, Idaho 208-287-7912 208-287-7909 Fax jhastingsna.adaweb. net From: Kirsti Allphin [mailto:kallphin@kmengllp.com] Sent: Tuesday, July 02, 2013 1:14 PM To: Jerry Hastings Cc: 'Aaron Ballard' Subject: Sub Name Reservation Request Hi Jerry - We are working on a new residential subdivision project located at 4405 East Ustick in Meridian. The parcel number is 51104121051. The development group, Providence Properties, LLC, has asked that we request the name "Copperleaf Subdivision" for this project. Please let me know if this name is acceptable. 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July 9, 2013 File: B013323A Providence Properties, LLC Attn: Randy Clarno PO Box 2648 Eagle, ID 83616 RE: Geotechnical Engineering Evaluation Sgroi Property 4405 East Ustick Road Meridian, Idaho Dear Mr. Clarno: Strata, A Professional Services Corporation (STRATA) is pleased to present our authorized Geotechnical Engineering Evaluation for the proposed residential development located at 4405 East Ustick Road in Meridian, Idaho. Our Geotechnical Engineering Evaluation's purpose was to explore the subsurface conditions in the proposed development area and provide geotechnical recommendations to assist project planning, design and construction. The attached report summarizes our field and laboratory test results and presents our geotechnical engineering opinions and recommendations. The following report provides specific geotechnical recommendations for preparing the site, including earthwork activities, pavement design and stormwater design recommendations. It is our opinion that geotechnical continuity with the project team throughout construction will lessen the potential for errors and omissions related to our geotechnical recommendations. The project design, owner, and construction team must read, understand and implement this report in its entirety. Portions of the report cannot be relied upon individually without the supporting text of remaining sections, appendices and plates. Our opinion is the success of the proposed construction will depend on following the report recommendations, good construction practices, and providing the necessary construction monitoring, testing and consultation to verify that work has been constructed as recommended. We recommend STRATA be retained to provide these services to verify our report recommendations are being followed. We appreciate the opportunity to work with you and we look forward to our continued involvement on this project throughout construction. Please do not hesitate to contact us if you have any questions or comments. Sincerely, M -E6 --, ; STRATA, Inc. �r�1e J �� ( �) 130 teve Worsley, P.G. (W shington) r: �3 i Geologist �a 0� Cc: Mr. Kevin McCarthy/KM Engineering SW/AM/nm www.stratageotech.com Manager REPORT Geotechnical Engineering Evaluation Sgroi Property 4405 East Ustick Road Meridian, Idaho Prepared For: Providence Properties, LLC Randy Clarno PO Box 2648 Eagle, ID 83616 Prepared By: STRATA, Inc. 8653 W. Hackamore Dr. Boise, Idaho 83709 P. 208.376.8200 F. 208.376.8201 July 9, 2013 TABLE OF CONTENTS Page INTRODUCTION............................................................................................................1 PROJECT UNDERSTANDING.......................................................................................2 Existing Site Conditions..................................................................................................2 Proposed Construction...................................................................................................2 SUBSURFACE EVALUATION PROCEDURES..............................................................2 SUBSURFACE CONDITIONS........................................................................................3 LABORATORY TESTING............................................................................................... 3 GEOTECHNICAL OPINIONS AND RECOMMENDATIONS...........................................4 Earthwork....................................................................................................................4 Site and Subgrade Preparation................................................................................4 Wet Weather/Soil Construction................................................................................5 Excavation Characteristics....................................................................................... 6 Utility Trench Construction........................................................................................ 6 Structural Fill and Compaction. ......................... ........................ .............................. 7 Table 1. Structural Fill Specifications and Allowable Use ............................................. 7 Geosynthetics........................................................................................................... 8 Pavement Section Design............................................................................................8 General.................................................................................................................... 8 Trafficand Subgrade................................................................................................9 Table 2. Pavement Design Parameters.......................................................................9 Asphalt, Aggregate Base Course and Subbase Materials ........................................ 9 Pavement Section Thickness.................................................................................10 Table 3. Asphalt Pavement Design Section...............................................................10 Pavement Maintenance..........................................................................................10 SiteDrainage.............................................................................................................10 ExteriorGrading................................................................................................. 10 InfiltrationRates.....................................................................................................11 Groundwater.. ...... .................................................................................................. 11 GEOTECHNICAL DESIGN CONTINUITY....................................................................12 EVALUATION LIMITATIONS........................................................................................12 Geotechnical Engineering Evaluation Sgroi Property 4505 East Ustick Road Meridian, Idaho INTRODUCTION Strata, A Professional Services Corporation (STRATA) has performed our geotechnical engineering evaluation for the proposed development planned at 4405 East Ustick Road in Meridian, Idaho. Our evaluation's purpose was to explore the subsurface soil conditions at the project site and to prepare geotechnical recommendations to assist project planning, design and construction. We accomplished our services referencing our authorized geotechnical proposal dated June 26, 2013. To accomplish our evaluation, STRATA performed the following services: 1. Coordinated exploration with the Idaho Digline Utility Notification Center to help reduce the potential for damage to existing utilities. 2. Observed the excavation of 2 exploratory test pits within the planned development area. Test pit exploration extended 13 feet below existing grades. A standpipe piezometer was installed in one of the test pits. Our field geologist visually described, classified and logged soil encountered referencing the Unified Soil Classification System (USCS). 3. Performed laboratory tests with reference to ASTM International (ASTM) procedures including R -value, in-situ moisture content, and grain size evaluation. We utilized these laboratory results to help characterize engineering parameters and to correlate soil engineering characteristics used in our design. 4. Performed engineering analyses in order to provide geotechnical design and earthwork construction recommendations. Our engineering analyses provides geotechnical recommendations and opinions for: 10 Earthwork • Site and subgrade preparation • Wet weatherlsoil construction • Excavation characteristics • Utility trench construction • Structural fill and compaction • Geosynthetics Pavement Section Design • Traffic and subgrade • Asphalt, aggregate base course and subbase materials • Pavement section thickness • Pavement maintenance `;tW lffc t Hl"Nimove www.stratageotech.com Sgroi Property 4405 East Ustick Road Meridian, Idaho File: B013253A Page 2 4 Site Drainage • Exterior grading • Infiltration rates • Groundwater 1§ Geotechnical Design Continuity • Groundwater Monitoring • Plan and specification review • Construction observation and testing 5. Prepared and provided an electronic copy of our final report of geotechnical findings, opinions and recommendations, including exploration logs and an exploration location plan. Hard copies are available upon request. PROJECT UNDERSTANDING Existing Site Conditions The proposed construction development is located on the south side of East Ustick Road approximately 1,300 feet west of the intersection of East Ustick Road and North Cloverdale Road. The proposed subdivision will be accessed from the south via East Arch Drive. The site is currently developed with a single family residence and 2 associated detached garage outbuildings in addition to a mobile home unit. These structures are located in the northwest corner of the site. Further, in the central portion of the site, there is a concrete slab that appears to be a remnant of a demolished structure. The site is bounded by West Ustick Road on the north and by residential properties to the east, a school to the west, and East Arch Drive to the south. Proposed Construction We understand the approximate 2.8 -acre development will consist of 16 buildable lots with proposed asphalt paved roadways providing access to the development. Although structures are not currently defined, we anticipate buildings will be supported by shallow foundations and joist floor systems. We also anticipate stormwater will be disposed of via seepage beds or swales. SUBSURFACE EVALUATION PROCEDURES STRATA accomplished subsurface exploration on July 1, 2013 via 2 exploratory test pits extending 14 feet below existing ground surface. The approximate exploration locations are illustrated on Plate 1, Exploration Location Plan, which also delineates the proposed development. Test pit locations were established in the field by taping from existing site features. www.stratagootech.com Sgroi Property 4405 East Ustick Road Meridian, Idaho File: B013253A Page 3 A professional geologist visually evaluated the soil encountered in each test pit and logged the soil profile referencing the USCS. We provide a brief USCS explanation in Appendix A to help interpret the terms on individual test pit logs. Individual test pit logs are also provided in Appendix A. The test pits were backfilled with the excavated material to the ground surface following the completion of excavations. SUBSURFACE CONDITIONS Topsoil and vegetation was observed to a depth of approximately 8 inches below grade within the test pits excavated. Soil conditions encountered within test pits generally consist of sandy silt overlying poorly graded gravel with sand and silt. The poorly -graded gravel with sand was encountered to the bottom of the test pits. We provide more specific discussion of each soil unit encountered below: Native silt — Surficial silt and silt with sand was observed at the ground surface, extending to a depth of 4 to 6 feet below existing grade. Surficial soil was described as brown to tan, stiff to hard, and dry to moist. Moderate calcium carbonate cementation is present in the silt between approximately 3 and 6 feet. 0 Poorly -graded gravel with sand — Below silt soil, we observed poorly -graded gravel with sand and silt to the test pit termination depths of 14 feet. The gravel with sand and silt was described as tan, dense to very dense, and moist. Specific soil contacts and descriptions are further described on individual test pit logs provided as Appendix A to this report, along with a USCS explanation to assist with test pit log information. Groundwater was not encountered within test pits at the time of exploration; however, we installed a temporary standpipe piezometer in the excavation for TP -1 for future groundwater monitoring. Groundwater has the potential to vary with seasonal changes in irrigation, precipitation, infiltration and development to the project site. Subsurface variations may exist between exploration locations and may not be apparent until construction. Test pits only allow us to observe a portion of the site subsurface conditions. Where such variations exist, they may impact opinions and recommendations presented in this report, as well as construction timing and costs. LABORATORY TESTING We returned soil samples collected in the field to our laboratory for further classification and testing and accomplished laboratory testing referencing ASTM International (ASTM) procedures. We developed our laboratory testing program for this project primarily to evaluate www.stratageotech.com Sgroi Property 4405 East Ustick Road Meridian, Idaho File: B013253A Page 4 subsurface soil characteristics and engineering properties. Specifically, we accomplished moisture content, minus No. 200 wash and R -value testing. We present laboratory test results on individual test pit logs in Appendix A. R -value graphical results are presented in Appendix B. We will retain soil samples for 90 days and discard after this time period unless we are notified to store the samples for an extended period of time. GEOTECHNICAL OPINIONS AND RECOMMENDATIONS We present the following geotechnical recommendations to assist planning, design and construction of the proposed development planned at the Sgroi Property, located at 4405 East Ustick Road in Meridian, Idaho as illustrated on Plate 1 attached to this report. This report provides geotechnical design criteria for the development which the design and construction teams must review to verify the applicability to the planned construction. We base our recommendations on the results of our field evaluation, laboratory testing, our experience with similar soil conditions and our understanding of the proposed construction. If design plans change or if the subsurface conditions encountered during construction vary from those observed during our field evaluation, we must be notified to review the report recommendations and make necessary revisions. Earthwork Site and Subgrade Preparation STRATA has not reviewed a grading plan for the proposed development, but we anticipate cut and fill will be less than approximately 1 -foot for project site grading. At the time of exploration, surficial vegetation and organic material was observed to a depth of approximately 8 inches. We recommend a minimum of 8 inches of topsoil with organic matter be stripped beneath all planned improvements, including structural fill areas. This topsoil is not suitable for use as structural fill and should be wasted or stockpiled on-site for landscape areas. In the area of the current house, garages, mobile home, and concrete slab area, existing structures must be completely demolished and removed from the site. Test pits have been marked in the field with labeled standpipe piezometers or stakes. Test pit locations should be surveyed prior to any earthwork site grading activities. Test pits which are located beneath paving, structural fill or building lot areas should be re -excavated and replaced with structural fill in accordance with the recommendations in this report. ww w. s t r ata g e o to c h. c o in Sgroi Property 4405 East Ustick Road Meridian, Idaho File: BO13253A Page 5 The stripped subgrade in proposed structural fill, pavement and sidewalk areas should be proof -rolled with a minimum of 5 passes from a heavy 5 -ton roller or equivalent. If weaving or pumping is observed, those areas should be removed and replaced with structural fill. Wet Weather/Soil Construction We strongly recommend earthwork construction take place during dry weather conditions. Silty soils are susceptible to pumping or rutting from heavy loads such as rubber - tired equipment or vehicles when the soil is above optimum moisture content. Earthwork should not be performed immediately after rainfall or until soil can dry sufficiently to allow construction traffic without disturbing the subgrade. During and after achieving subgrade elevation, the contractor must take precautions to protect the subgrade from becoming disturbed or saturated. We recommend the contractor limit construction traffic to any prepared subgrade and reduce exposure to precipitation and water. Specifically, the contractor should: 6 Grade subgrades to aggressively direct surface water away from construction areas that could be adversely affected by infiltration. 9, After adequate moisture conditioning efforts have failed, remove exposed subgrade soil that becomes soft or begins to pump to firm soil and replace it with structural fill as described above for over -excavations. Never attempt structural fill placement during or immediately following a significant precipitation event. 9 Never allow subgrades to freeze or become saturated prior to fill placement. The final subgrade conditions and careful construction procedures are critical to the long-term project performance. We recommend earthwork specifications specifically identify the contractor's responsibility to protect and maintain prepared subgrades. It may improve project economy to retain STRATA to observe the subgrade preparation activities to identify techniques or construction activities that may be attributing to unstable subgrades and contributing to the need for over -excavations. If significant soft/wet soil conditions are encountered, the use of a woven geotextile fabric may be necessary. These material requirements are presented in the Geosynthetics report section. Allowing time for proper moisture -conditioning during dry weather is critical to reducing excessive over -excavations and importing granular structural fill. However, depending on the weather and moisture conditions during construction, drying fine-grained soil may not be practical, and over -excavation in conjunction with the use of geosynthetics may be necessary to QO www.stratageoteGh.com Sgroi Property 4405 East Ustick Road Meridian, Idaho File: B013253A Page 6 help maintain project schedule. In short, using site soil may be impractical during certain weather or soil conditions and we recommend contingencies to remove and replace wet soil. Excavation Characteristics Based on exploration results, it appears the near -surface soil encountered in exploratory test pits may be excavated with conventional equipment. Excavations can cave and slough and must be sloped back in accordance with Occupational Health and Safety Act (OSHA) guidelines. Fine to coarse-grained soil is expected to be exposed in excavations throughout the development area and should be temporarily sloped at 1.51-1: IV (horizontal to vertical). Due to the potential for varying soil conditions at the time of construction, we recommend earthwork contractors evaluate each excavation configuration specific to OSHA guidelines and to seek appropriate professional guidance to ensure excavation safety and stability. Utility Trench Construction Structural fill for backfilling utility trenches and all bedding should conform to Idaho Standards for Public Works Construction (ISPWC) specifications, except that all trench backfill must be placed and compacted to the structural fill requirements presented herein. Loose soil must be removed from the base of utility trenches prior to placing pipe bedding. In addition, if water is encountered, it must be removed from the base of the utility trench before placing pipe bedding. We recommend utility pipes be placed on at least 4 inches of bedding placed over undisturbed native soil, structural fill or otherwise supported according to the pipe manufacturer's specifications and ISPWC requirements. After bedding the pipe, place structural fill and compact it from the pipe invert to 1 -foot above the top of the pipe with tamping bars and/or plate compactors to render the backfill in a firm and unyielding condition. Thoroughly place and compact bedding below pipe haunches or the zone between the pipe invert and the spring line. To accomplish backfilling, the distance between the side of the pipe at the spring line and the trench wall should be at least 12 inches. The remainder of the utility trench should be backfilled in accordance with the Structural Fill section of this report. www.st ratageotech.com Sgroi Property 4405 East Ustick Road Meridian, Idaho File: B013253A Page 7 Structural Fill and Compaction All fill placed for the development must be placed as structural fill. The structural fill requirements described in Table 1 below, in general, correlate to ISPWC material specifications. Project structural fill products are described in Table 1 below. Table 1. Structural Fill Specifications and Allowable Use Structural Fill Product Allowable Use Material Specifications' Sieve Size % Passing • Soil classified as GP, GW, GM, SP, SW, SM or General Structural FillML ® General site grading according to the USCS. • Maximum particle size must be less than 6 inches. • Soil consisting of inert earth materials with < 3 percent organics or other deleterious substances wood, metal, plastic, waste, etc). Granular Structural Fill General site grading • Over -excavation Pavement section ® granular subbase • Soil classified as GP, GP -GM, GW, according to the USCS, and meeting the gradation provided. • Soil meeting requirements stated in the latest edition of the Idaho Standard for Public Works Construction (ISPWC), Section 801— Aggregate Subbase. 6 Inch 100 3 Inch 90-100 No. 4 30-60 No. 200 <10 • Soil meeting requirements stated in the latest 1 Inch 100 % Inch 80-100 edition of the Idaho Standard for Public Works Utility Trench Bedding Construction (ISPWC), Section 305 — Pipe Bedding. 3/8 Inch 20-70 No.4 5-20 • Soil may not contain particles larger than 1 inch in No. 8 0-5 median diameter and must meet the required No. 200 0-3 radation. • Soil meeting requirements stated in the latest 1 Inch 100 Aggregate Base Course edition of the Idaho Standard for Public Warks 114 Inch 90-100 Over -excavations Construction (ISPWC), Section 802—Aggregate • Granular structural fill Base. No.4 40-65 • Pavement section • Soil may not contain particles larger than 1 inch in No. 8 30-50 base course median diameter and must meet the required gradation. No. 200 3-9 All structural fill from on-site or imported sources should be placed in maximum 10 -inch - thick lifts, and each lift shall be moisture -conditioned to within 3 percent of optimum moisture content and compacted to a minimum of 95 percent of ASTM D 1557 Modified Proctor. The maximum, loose -lift thickness is based on using large, 5- to 10 -ton, smooth -drum vibratory rollers. The maximum loose lift thickness should be reduced where smaller and/or lighter compaction equipment is used. STRATA should be retained to perform field density testing of structural fill to verify contractor compliance with the above minimum compaction criteria. Structural fill with greater than 30 percent retained above the'/ -inch sieve is too coarse for proctor density testing, but may be used as granular structural fill provided it meets the www.stratageotech.com Sgroi Property 4405 East Ustick Road Meridian, Idaho File: B013253A Page 8 above specification. Coarse fill must be compacted using a "method specification" developed during construction, based on the material characteristics and the contractor's means and methods. It is common that "method specifications" are developed during construction, specific to the materials and conditions encountered. At a minimum, STRATA recommends coarse, granular fill be placed in maximum 10 -inch lifts and compacted with 6 complete passes of a 10 - ton vibratory or grid roller. Vibratory rollers must have a dynamic force of at least 30,000 pounds per impact per vibration and at least 1,000 vibrations per minute. Coarse fill must be compacted to a dense, interlocking and unyielding surface. We recommend STRATA review the soil and aggregate material planned for fill use and monitor compaction effort during construction. Geosvnthetics If earthwork contractors are unable to achieve subgrade compaction requirements outlined in this report's Site Preparation section, geosynthetic fabrics may be used to improve subgrade support when constructing on soft or wet soil. We recommend woven geosynthetics at pavement subgrade elevation where moisture -conditioning and re -compaction as recommended in the Site Preparation section of this report is not possible due to wet soil conditions. Where required, apply geosynthetics directly on approved subgrade, taut, free of wrinkles and over -lapped at least 12 inches. Woven geosynthetic fabrics for subgrade stabilization and soil improvements shall have the following minimum properties of 700 pounds (CBR Puncture, ASTM D6241) and 200 pounds (Grab Tensile Strength ASTM D4632). STRATA must be consulted prior to using geosynthetics for subgrade stabilization. Further, we recommend contractors carefully review subsurface conditions prior to bidding and recommend the design team include a unit price for woven geosynthetics for the earthwork portion of the project. We recommend non -woven geosynthetic fabrics for filtration and for stormwater facilities. Non -woven fabrics and should have a maximum apparent opening size equivalent to the U.S. No. 70 sieve (ASTM D4751), a minimum weight of 3.5 ounces per square yard and minimum CBR puncture resistance of 200 pounds (ASTM D6241). Pavement Section Design General The following flexible asphalt pavement section design is provided referencing the Idaho Transportation Department (ITD) Gravel Equivalent Design Method using Ada County Highway Ob www.stratag eotech.com Sgroi Property 4405 East Ustick Road Meridian, Idaho File: B013253A Page 9 District substitution ratios. STRATA estimated traffic loading and design parameters based on our proposed construction understanding and our understanding of the subsurface conditions. Traffic and Subgrade The following tables present our traffic loading, geotechnical design parameters and references, as well as the resulting flexible pavement section design recommendations. Table 2. Pavement Design Parameters Design Parameter Value Used References Traffic Loading 33,000 ESALS (Local Road, TI=6) Ada County Highway District Standard Design Life 20 years Assumed Subgrade R -value 20 Laboratory Testing Asphalt Layer Substitution Ratio 1.95 Ada County Highway District Standard Base Course Substitution Ratio 1.1 Ada County Highway District Standard Subbase Course Substitution Ratio 1.0 Ada County Highway District Standard Equivalent Single Axle Loads (ESALS). From laboratory test results, and utilizing silt for roadway subgrade, we obtained an R - value of 41. However, for the purpose of design, we utilized an R -value of 20. To help improve subgrade characteristics, the pavement Subgrade should be prepared as recommended in this report's Site Preparation section. Subgrades must be shaped (crowned) and graded to facilitate positive drainage and inverted crowns must be avoided. Asphalt, Aggregate Base Course and Subbase Materials Crushed aggregate base course and granular subbase shall conform to the Structural Fill requirements and be placed directly over a properly prepared subgrade. A woven geotextile should be used for constructability, during wet and inclement weather and to increase performance at the subgrade. The woven geotextile should have material properties and be placed as outlined in this report's Geosynthetics section. We recommend STRATA observe final subgrade preparations, geotextile placement and all aggregate placements. Asphalt concrete must be compacted to 92 percent of the maximum density for a Hveem or Superpave mix design. The final traveling surface of asphalt concrete shall meet ISPWC '/-inch asphalt mix design requirements. Asphalt mix designs and all appropriate aggregate source certificates should be accepted by STRATA at least 5 days prior to initiating asphalt paving. Asphalt construction and final surface smoothness, joints and density should meet ISPWC specifications. If subgrade conditions appear significantly different during www.stratageotech.com Sgroi Property 4405 East Ustick Road Meridian, Idaho File: B013253A Page 10 construction, traffic loading conditions change or traffic volumes increase, STRATA should be notified to amend our design accordingly. Pavement Section Thickness STRATA evaluated the pavement sections utilizing the ITD pavement design methodology, soil -engineering parameters from laboratory testing and the estimated traffic - loading conditions. Based on subgrades prepared as recommended and the traffic criteria provided, Table 3 provides the recommended asphalt section for the anticipated pavement application. If subgrade conditions change as design is finalized or during construction, or traffic loading is different than we have assumed, STRATA must review our pavement analyses and resulting sections. Table 3. Asphalt Pavement Design Section Pavement Maintenance We recommend crack maintenance be accomplished on all pavement surfaces every 3 to 5 years to reduce the potential for surface water infiltration into the underlying pavement subgrade. Surface and subgrade drainage are extremely important to the performance of the pavement section. Therefore, we recommend the subgrade, base and asphalt surfaces slope at no less than 2 percent to an appropriate stormwater disposal system or other appropriate location that does not impact adjacent buildings or properties. The pavement's lifespan is dependent on achieving adequate drainage throughout the section, especially at the subgrade elevation. Ponding water at the pavement subgrade surface can induce heaving during the freeze -thaw process. Site Drainage Exterior Grading We recommend the ground surface adjacent to structures slope a minimum of 5 percent away within 10 feet of the structure. The ground surface beyond 10 feet of structures should be sloped at least 2 percent away. Improper management of near -surface water, by not providing an effective grading and drainage design, can result in moisture or water entering foundation areas. Possible sources of near -surface water include pressurized irrigation water, rainwater, www.stratageotech.com Asphalt Aggregate Base Granular Asphalt Pavement Application Concrete Course (inches) Subbase (inches) (inches)' Local Roads (TI = 6) 2.5 4.0 10.0 Pavement Maintenance We recommend crack maintenance be accomplished on all pavement surfaces every 3 to 5 years to reduce the potential for surface water infiltration into the underlying pavement subgrade. Surface and subgrade drainage are extremely important to the performance of the pavement section. Therefore, we recommend the subgrade, base and asphalt surfaces slope at no less than 2 percent to an appropriate stormwater disposal system or other appropriate location that does not impact adjacent buildings or properties. The pavement's lifespan is dependent on achieving adequate drainage throughout the section, especially at the subgrade elevation. Ponding water at the pavement subgrade surface can induce heaving during the freeze -thaw process. Site Drainage Exterior Grading We recommend the ground surface adjacent to structures slope a minimum of 5 percent away within 10 feet of the structure. The ground surface beyond 10 feet of structures should be sloped at least 2 percent away. Improper management of near -surface water, by not providing an effective grading and drainage design, can result in moisture or water entering foundation areas. Possible sources of near -surface water include pressurized irrigation water, rainwater, www.stratageotech.com Sgroi Property 4405 East Ustick Road Meridian, Idaho File: B01 3253A Page 11 snowmelt, or leaking water lines. These water sources can be transmitted to the foundation stem wall and pond beneath the structure via precipitation, roof downspout discharge, and snowmelt. Possible conduits for water to enter into crawlspaces can include loose or porous backfill placed adjacent to foundation walls and loose or porous backfill in utility trenches that extend through or beneath foundations. Providing good drainage as discussed above can be supplemented by using impermeable aprons adjacent to at -grade structures. Impermeable aprons may consist of asphalt or Portland cement pavement that is placed directly adjacent to the foundation stem - walls. An elastomeric sealant should also be considered between aprons and foundation stem - walls to further reduce the potential for moisture to infiltrate the area directly adjacent to foundations. Infiltration Rates We understand on-site stormwater will be retained using subsurface seepage beds or swales. All seepage swales or subsurface disposal beds should be located a minimum 25 feet from building foundations to reduce the potential for stormwater seepage into the foundation wall backfill zone. All infiltration facilities should be constructed a minimum of 12 inches into native, non- cemented, poorly -graded sand or poorly -graded gravel with sand. Based on test pit exploration, we anticipate excavation depths of 4 to 6 feet may be required to expose gravel soil. We recommend an allowable design infiltration rate of 8 inches per hour be utilized for infiltration facilities constructed into poorly -graded sand or gravel with sand soils. Groundwater The appropriate separation between seasonal high groundwater and the base of the stormwater disposal facilities must be maintained. Groundwater was not observed at the time of exploration. Based on our experience, groundwater in the site vicinity is typically related to seasonal irrigation and is likely near the peak elevation in July to August. Therefore, we recommend a seasonal high groundwater level of 14 feet below existing grade be assumed for stormwater facility design. However, this depth is an estimate provided based on conditions encountered during construction and groundwater levels may vary. Therefore, we recommend groundwater monitoring be accomplished throughout the remainder of the irrigation season (July to October) to confirm seasonal high groundwater elevation estimates. 04 www.st rata g eotech. com Sgroi Property 4405 East Ustick Road Meridian, Idaho File: B01 3253A Page 12 STRATA installed a standpipe piezometer within test pit TP -1 to monitor groundwater levels. We recommend STRATA be retained to perform groundwater monitoring to verify the seasonal high groundwater level for subsurface stormwater disposal design. GEOTECHNICAL DESIGN CONTINUITY Geotechnical design continuity will be an important aspect of this project's successful completion. In our opinion, geotechnical continuity can occur in 4 stages in the planning, design and construction project aspects. Specifically, we recommend STRATA maintain the geotechnical design continuity in the following aspects: Groundwater Monitoring: The groundwater level should be monitored during the current irrigation season to verify the seasonal high groundwater level beneath the site. A piezometer was installed to monitor groundwater levels. Monitoring typically should be accomplished on a monthly basis between July and October. STRATA remains available to perform groundwater monitoring at your request. 140 Plan and Specification Review: We recommend STRATA be retained to review final design and construction plans and specifications to verify our geotechnical recommendations are incorporated into project bidding and construction documents as well as to provide additional recommendations based on the final design concepts. These efforts can help provide document continuity across the engineering disciplines and reduce the potential for errors as the project concepts evolve. 6 Construction Observation and Testing: We recommend STRATA be retained to observe site grading and fill compaction testing. Having STRATA provide testing and oversight during this process will reduce the potential for an unforeseen construction error which may ultimately impact the project. STRATA can also provide construction material testing of pavement sections and asphalt surfaces. If we are not retained to perform the recommended services, we cannot be responsible for related construction errors or omissions. EVALUATION LIMITATIONS This report has been prepared to assist project planning design and construction of the proposed Sgroi Property to be located at 4405 East Ustick Road in Meridian, Idaho. Our geotechnical findings and opinions have been developed based on the authorized subsurface exploration and laboratory testing, as well as our understanding of the project at this time. Our geotechnical design recommendations are specific to the planned design and infrastructure construction and should not be extrapolated to other future site developments without allowing adequate geotechnical consultation by STRATA. Our services consist of professional opinions and findings made in accordance with generally accepted geotechnical engineering principles and practices in southwest Idaho at the QO www.sti'atageotech.com Sgroi Property 4405 East Ustick Road Meridian, Idaho File: B013253A Page 13 time of this report. The geotechnical recommendations provided herein are based on the premise that appropriate geotechnical consultation during subsequent design phases is implemented and an adequate program of tests and observations will be conducted by STRATA during construction to verify compliance with our recommendations and to confirm conditions between exploration locations. This acknowledgment is in lieu of all warranties either express or implied. The following plate and appendix accompany and complete this report: Plate 1: Exploration Location Plan Appendix A: Unified Soil Classification System (USCS) & Exploratory Test Pit Logs Appendix B: R -value graph www.stratageotech.com mmmillik NAME cKilk UNIFIED SOIL CLASSIFICATION SYSTEM MAJOR DIVISIONS GRAPH SYMBOL LETTER SYMBOL TYPICAL NAMES (7_3_07) Indicates Date of BK Bulk Sample Q'..,Well—Graded GW Gravel, 0 Groundwater RG Ring Sample CLEAN at Time of Drilling Gravel—Sand Mixtures. GRAVELS( ® GP Poorly—Graded Gravel, GRAVELS "'' Gravel—Sand Mixtures. G GM Silty Gravel, Gravel— WITH WITH Sand—Silt Mixtures. GC Clayey Gravel, Gravel— COARSE FINES GRAINED Sand—Clay Mixtures. SOILS „ , „ SW Well—Graded Sand, CLEAN Gravelly Sand. SANDSSP Poorly—Graded Sand, Gravelly Sand. SANDS Silty Sand, SANDS -0 ' - SM Sand—Silt Mixtures. FINES �EITH. SC Clayey Sand, \a Sand—Clay Mixtures. ML Inorganic Silt, Sandy or Clayey Silt. SILTS AND CLAYS Inorganic Clay of Low LIQUID LIMIT CL to Medium Plasticity, LESS THAN 50% Sandy or Silty Clay. OL Organic Silt and Clay of Low Plasticity. FINE GRAINED Inorganic Silt, Mica— SOILS MH ceous Silt, Plastic Silt. SILTS AND CLAYS Inorganic Clay of High LIQUID LIMIT CH Plasticity, Fat Clay. OH Organic Clay of Medium GREATER THAN 50% to High Plasticity. PT Peat, Muck and Other _ Highly. Highly Organic Soils. BORING LOG SYMBOLS GROUNDWATER SYMBOLS TEST PIT LOG SYMBOLS IStandard 2—Inch ODGroundwater Split—Spoon Sample _ After 24 Hours BG Baggie Sample California Modified 3—Inch OD Split—Spoon Sample (7_3_07) Indicates Date of BK Bulk Sample Reading IIRock Core 0 Groundwater RG Ring Sample at Time of Drilling Shelby Tube 3—Inch OD Undisturbed Sample Shorthand Notation: BGS = Below Existing Ground Surface N.E. = None Encountered a: NN O ae 0L°�Q �ow cc REMARKS USCS Description w'K g g Qo �'E a oS FT a o g o Y Note: BGS = Below Ground =0 rq N �i—m Z o :�iU a Surface v SANDY SILT, (ML) brown, stiff, ' moist Grass and roots to 8 inch BGS ML BG 2,5 B K 3.5 SILT, (ML) tan, hard, moist to dry R value = 41 2.5 >4.5 Moderate cementration from ML 3.5 to 4.5 feet BGS >4.5 5.0 Caliche from 5.0 to 6.0 feet BGS Difficult excavation from 5.0 to 6.0 feet BGS Very difficult excavation from 6.0 to bottom of excavation POORLY GRADED GRAVEL, With Sand And Silt, (GP-GM) tan, very ° ° dense, moist oO Slight caving from 7.0 to bottom ° of excavation 7.5 O 5.5 6.8 i , S � ° Infiltration test performed at 9.5 feet BGS. Infiltration rate = 20 i C) inches per hour measured. 10.0 GP i GM ° i a O O a 0 O 12.5 0 O Plezometer Installed to 13.0 feet BGS. Test Pit Terminated at 14.0 Feet. Client: KM ENGINEERS Test Pit Number: TP-1 EXPLORATORY Project: B013323A Date Excavated: 07-01-2013 —rFRaY& TEST PIT LOG Backhoe: CASE 580K Bucket Width: 2' Depth to Groundwater: N.E. Logged By: SW "''' " ` ''' "" Sheet 1 Of 1 U1 W 0 J G `O �' ,coo zl d o a REMARKS F=-.. USCS Description o S. E >a ¢ m m a a y d r LU ur m i-. o m °+ a o i7i �'o o m -- Note: BGS = Below Ground v vt N Z o v Surface U a SANDY SILT, (ML) brown, stiff, moist 3.5 Grass and roots to 8 Inch BGS ML BG >4.5 SILT, (ML) tan, hard, moist to dry >4.5 2.5 ML >4.5 Moderate cementration from 3.0 to 4.0 feet BGS >4.5 POORLY GRADED GRAVEL, With Sand And Silt, (GP -GM) tan, dense, ° moist oQ O O ° O 7.5 0 O Infiltration test performed at 8.0 feet BGS. Infiltration rate = 20 FBG inches per hour measured. I o Q GP- ° GM o0 i i 10.0 0 Q 0 ° O Q O Q O 12.5 0 Q 0 O Test Pit Terminated at 14.0 Feet. Client: KM ENGINEERS Test Pit Number: TP -2 EXPLORATORY�+ Project: B013323A Date Excavated: 07-01-2013 TEST PIT LOG Backhoe: CASE 580K Bucket Width: 2' ' ' ' ' "' Sheet 1 Of 1 Depth to Groundwater: N.E. Logged By: SW � RNALUE AS RECEIVED AS TESTED Idaho T %PASSING Project: Sgroi Property 4" Project Number: B013323A Client: KM Engineering Density, PCF Lab Number: B13LO715A Sample Identification: TP -1 @ 1 - 1.5 ft Date Received: 7/1/13 Sample Classification: Silt 21.8 Date Tested: 712-3/13 By: IR/CK 20.8 Exp. Pressure, PSI SOIL CONSTANTS R VALUE DATA 0.09 1f2" Percolation: None Paints Polnt2 Polnt3 R VALUE: 41 Exudation, PSI 109 207 265 No.4 y DrLq 100 No. e No. 16 No. 30 0 0 No. 50 v m No. 100 No. 200 N c o m O o M � ❑ d d V o a (p J N d N 2� N o a N c a c 0 c p N m 8 o K 0 0 u o o N O � 0 0 0 R value Note: This report covers only material as represented by this sample and does not necessarily cover all soil from this layer or source. A PROFESSIONAL .SERVICES CORPORATION Reviewed by: f '�f �� fq_Y�- gr/=Fy Trow J'/, <'ai'oceNd IJP GRADATION: AASHTO T -i 1, T27 SCREEN AS RECEIVED AS TESTED SIZE %PASSING %PASSING 4" Density, PCF 99.0 99.6 99.7 Moisture Content, % 21.8 21.2 20.8 Exp. Pressure, PSI 0.00 0.03 0.09 GRADATION: AASHTO T -i 1, T27 SCREEN AS RECEIVED AS TESTED SIZE %PASSING %PASSING 4" 3" 2" 1" 314" 1f2" 3!S" No.4 100 100 No. e No. 16 No. 30 No. 50 No. 100 No. 200 Kirsti Allphin From: Mindy Wallace [Mwallace@achdidaho.org] Sent: Wednesday, June 26, 2013 1:42 PM To: Kirsti Allphin Subject: RE: Sgroi Property Kirsti, A traffic impact study is not require for this application. Thank You, Mindy From: Kirsti Allphin [mailto:kallphin@kmengllp.com] Sent: Wednesday, June 26, 2013 10:35 AM To: Mindy Wallace Subject: Sgroi Property Hi Mindy— We are working on a new single-family residential subdivision project located at 4405 East Ustick in Meridian. The project will consist of +/- 16 buildable lots on 2.86 acres. The property owner entered into a Development Agreement with the City last year, and we are now preparing a preliminary plat application for the project, which will take access via Red Feather Subdivision to the south. Any existing vehicular access to Ustick will be eliminated as a part of this project. As a part of our submittal to Meridian, we need to provide documentation from ACHD that a TIS will not be required for the project. If this is the case, please reply to my e-mail and state as much so I have the documentation for my submittal package. If you have questions or need any further information, please feel free to call. Thanks, Kirsti Allphin Development Assistant Office Manager IonKM Engineering, LLP 9233 West State Street Boise, ID 83714 208.639.6939 Fax 208.639.6930 kallphin@kmengllp.com No virus found in this message. Checked by AVG - www,avg.com Version: 2012.0.2242 / Virus Database: 3204/5942 - Release Date: 06/26/13 1 m Hearing Date: September 5, 2013 File No.: PP -13-019 Project Name: Copperleaf Subdivision Request: Request for preliminary plat consisting of 16 single-family residential building lots and 4 common/other lots on 2.86 acres of land in the R-8 zoning district, by Providence Properties, LLC. Location: The site is located at 4405 E. Ustick Road, in the NE V4 of Section 4, Township 3N, Range IE. File No.: MDA -13-016 Request: Request for a modification to the development agreement to remove the requirement for townhomes to be constructed on two of the building lots; and inclusion of a revised conceptual development plan and building elevations. ***rPlease notice the 9WQA to run with the 1P at Councif~2TLX1***