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Home My WebLink About11163 W. 53rd DriveMarch 30, 2021 Re: Roof Sheathing Letter 11163 W. 53rd Dr. Lot 3 Block 1 Wheat Ridge, Colorado On March 26, 2021 EVstudio was requested to observe the installation of the roof sheathing at the above address. Our representative was able to verify the roof sheathing was fully nailed and installed properly per the structural drawings prepared by EVstudio. Please feel free to contact our office with any questions or concerns. Sincerely, Dominic Chapman Field Inspector Sincerely, veaaanwa �J� L � 46537 .l .: Ross Maxwell, PE Assistant Director of Structural Engineer 5335 W 481h Ave. Suite 300 303.670.7242 ph design@evstudio.com Denver. CO 80212 303.679.1862 fax www.evstudio.com i CITY OF WHEAT RIDGE Building Inspection Division (303) 235-2855 Office INSPECTION NOTICE t - Inspection Type: Job Address: Permit Number: t ❑ No one available for inspection: Time AM/PM Re -Inspection required: Yes No When corrections are complete, schedule re -inspection online. Date:,D I �_ _ Inspector: DO NOT REMOVE THIS NOTICE OFFICE USE ONLY Appr" by: City of 1 Wheatl"dge COMMUNITY DEVELOPMENT Inspector 2-16-21 Date City of Wheat Ridge Municipal Building 7500 W. 29th Ave. Wheat Ridge, CO 80033-8001 P: 303.235.2846 F: 303.235.2857 FOUNDATION SETBACK AND ELEVATION CERTIFICATION For Commercial and Multi -Family Developments This form must be fully completed by a Professional Land Surveyor licensed in the State of Colorado. This form must be accompanied by a Construction Control Plan following the procedure found on the reverse side of this form. DATE: 1/25/2021 PERMIT# #202001923 ADDRESS: 11163W. 53RD DRIVE LOT 3 ,BLOCK 1 9 QUAIL RUN SUBDIVISION I hereby certify that the elevations and distances shown on the attached sheets and as stated below for the recently formed or constructed structural foundation for the above property have been measured by me or directly under my supervision. The MINIMUM SETBACK DISTANCES from the property lines have been determined to be: FRONT: 10' REAR: 15' SIDE: 5 SIDE: 10' (CORNER) The foundation corner ELEVATIONS (NAVD88) have been determined to be: FRONT: 5483.2 REAR: 5483.2 SIDE: 5483.2 SIDE: 5483.2 All measurements have been determined on the following location: (Check only one): )( Top of proposed foundation wall prior to placement of concrete Top of foundation wall subsequent to placement of concrete The setback and elevation measurements are included on Signed Professional Surveyor Print MICHAEL S. MCDANIEL .�.a. _ Date 1/25/2021 www.cLwheatridge.co.us cv�, S. l�P (Surveyor's Sa L Lo 00 Plan. Rev 1 M018 Ntlld 1081NOO NOIlondISNOO O NI930 337111d HIM 3A3HM N PuL21Pa2I NV,d,OaiNOO NOIionaiSNOO v NnR �Ivno F . a N mi s W U O W W W W S U i we 4 0 � �o Ho a o o '-o o�,_ ael $ Z §00 — w �€ c a� a �: �0A ,� �0-oma �om� m w� s aaaaa ti J J J J L _ _ _ _ _ _ _ gl gl _ ____ _ _• AMV3O Gu .M l � — 1 I r 11 eta l e.e i� /, ,� �' ®� �'� 1 atle • R.S I 4- —Sao'." --F I aY ��i� _ I ..!v..., —•out °n `' — _ ®R etli ®� e 'ia c I II I i �� i � � �� I as • �� .—.adt�„ ��-' � q -° I �_i :reqq i� I „ •�� i. �� N SII 9� �� uun,. � � eei ti ji �PT. TlT ti m I i I —rr r,r rr r,r r,r ` CITY OF WHEAT RIDGE Building Inspection Division (303) 235-2855 Office INSPECTION NOTICE Inspection Type: Job Address: Permit Number: -------------- J No one available for inspection: Time AM/PM Re -Inspection required: Yes .No 'When corrections are complete, schedule re -inspection online. Date: Inspector: DO NOT REMOVE THIS NOTICE �►A41 CITY OF WHEAT A. Building InsRIDGE / Inspection Division I (303) 235-2855 Office INSPECTION NOTICE Inspection Type: i t Job Address: Permit Number: ❑ No one available for inspection: Ti t Re -Inspection re m required: Yes 4 e `- AM/PM ,o When corrections are complete, schedu/e re -inspection online, Dater-' I� Inspector: D N 7- &E -- H� lVO /G - - ,* � A.4, - CITY OF WHEAT RIDGE Building Inspection Division (303) 235-2855 Office INSPECTION NOTICE „"'• ,— Inspection Type:. L,ri_ Job Address: Permit Number: __ LlNo one available for inspection: Time � ` � M/PM Re -Inspection required: Yes ' No When corrections are complete, schedule re -inspection online. Date: Inspecto DO NOT REMOVE THIS NOTICE CITY OF WHEAT RIDGE Building Inspection Division (303) 235-2855 Office INSPECTION NOTICE Inspection Type: Job Address: Permit Number: ❑ No one available for inspection: Time AM/PM Re -Inspection required: Yes No When corrections are complete, schedule re -inspection online. Date: 4 Inspector: DO NOT REMOVE THIS NOTICE January 18, 2021 Wonderland Homes Re: Footing Inspection Letter 11163 W. 53rd Dr. Lot 3 Block 2 Wheat Ridge, CO EVstudio was requested on January 18, 2021 to observe the footing form construction at the above listed address. An EVstuido representative verified that all void, forms and steel was placed per the construction documents prepared by EVstudio. It is EVstudio's professional opinion that the constructed footing was placed in substantial compliance to the plans and specifications prepared by this office for this address and will support the anticipated loading conditions. Please call our office with any questions or comments. Sincerely, Dominic Chapman Field Inspector pDO CCIQ 4V e. rwao�e (r, (1 46537.C*-_.- Ross Maxwell, PE Assistant Director of Structural Engineering 5335 W. 481h Ave. 303.670.7242 ph design@evstudio.com Denver, CO 80212 303.679.1862 fax www.evstudio.com 11163 w 53rd dr January 18, 2021 Wonderland Homes Re: Footing Inspection Letter 11163 W. 53rd Dr. Lot 3 Block 2 Wheat Ridge, CO EVstudio was requested on January 18, 2021 to observe the footing form construction at the above listed address. An EVstuido representative verified that all void, forms and steel was placed per the construction documents prepared by EVstudio. It is EVstudio's professional opinion that the constructed footing was placed in substantial compliance to the plans and specifications prepared by this office for this address and will support the anticipated loading conditions. Please call our office with any questions or comments. Sincerely, Dominic Chapman Field Inspector pDO CCIQ 4V e. rwao�e (r, (1 46537.C*-_.- Ross Maxwell, PE Assistant Director of Structural Engineering 5335 W. 481h Ave. 303.670.7242 ph design@evstudio.com Denver, CO 80212 303.679.1862 fax www.evstudio.com i CITY OF WHEAT RIDGE Building Inspection Division (303) 235-2855 Office INSPECTION NOTICE Inspection Type: SU-? C Job Address: C t o7) ► Permit Number: r) UCc C ! C) 7 ❑ No one available for inspection: Time 10 , )AM/PM Re -Inspection required: Yesj No When corrections are complete, schedule re -inspection online. Date: Inspector: DO NOT REMOVE THIS NOTICE City of Wheat Ridge Single Family - New PERMIT - 202001923 PERMIT NO: 202001923 ISSUED: 01/06/2021 JOB ADDRESS: 11163 W 53rd Dr EXPIRES: 01/06/2022 JOB DESCRIPTION: Station 53 - New single family home with 2 car garage - 2,878 sq ft total (Bl/Lot 3) *** CONTACTS *** OWNER WONDERLAND HOMES GC (303)567-7630 KOLBY O'HERRON 202128 WONDERLAND AT STATION 53 SUB (303)978-1051 TODD WOODFORD 070071 C&T PLUMBING LLC SUB (303)650-3393 LAWRENCE GILL 022483 GILL ELECTRIC SUB (303)289-3441 ROBERT D. GROSS, SR. 019659 R&R HEATING & COOLING, INC *** PARCEL INFO *** ZONE CODE: UA / Unassigned USE: UA / Unassigned SUBDIVISION CODE: 2320 / APPLERIDGE ESTATES, STANDLEY H BLOCK/LOT#: / *** FEE SUMMARY *** ESTIMATED PROJECT VALUATION: 215,919.00 FEES Total Valuation 0.00 Plan Review Fee 120.00 Use Tax 41534.30 Permit Fee 11880.25 Engin. Review Fee 150.00 ** TOTAL ** 61684.55 *** COMMENTS *** *** CONDITIONS *** All roughs to be done at Framing Inspection. A printed copy of the permit and city stamped on-site plans must be available on-site for the first inspection. Approved per plans and red -line notes on plans. Must comply with 2018 IRC, 2020 NEC and all applicable City of Wheat Ridge Municipal Codes. Work is subject to field inspections. As part of the foundation inspections and PRIOR TO proceeding with any further construction/inspections, a completed, signed and sealed, Foundation Setback and Elevation Certification shall be submitted to the City for review. The certification form shall be fully completed by a Professional Land Surveyor licensed in the state of Colorado, stating that the foundation was constructed in compliance with all applicable minimum setback and elevation requirements of the City. Owner/Contractor is responsible for locating property lines and constructing improvements according to the approved plan and required development standards. The City is not responsible for inaccurate information submitted within the plan set and any construction errors resulting from inaccurate information. No C.O. may be issued until public improvements are complete as identified in the Subdivision Improvement Agreement. All landscaping shall be installed in accordance with the approved landscape plan (Case No. WZ-18-13) prior to C.O. and pursuant to the phasing identified in the Subdivision Improvement Agreement. Per the SIA, installation of landscaping, street trees, and irrigation is not required prior to Certificate of Occupancy if issuance of the C.O. occurs outside of the planting season, generally October to June. One (1) street tree required within front setback, by time of C.O. I, by my signatu e, do hereby attest that the work to be performed shall comply with all accompanying approved plans and specifications, applicable build ng codes, and all applicable mu icipal codes, policies and procedu es, and that I am the legal owner or have been authorized by the legal owner of the property and am authorized to obtain this permit and perform the work described and approved in conjunctton with this ermrt. I further attest that I am leggally authorized to include all entities named within this document as parties to the work to be performed and that all work to be pertormed is disclosed n this document and or its' accompanying approved plans and specifications. Signature of OWNER or CONTRACTOR (Circle one) 1. This permit was issued based on the information provided in the subectto the compliance with those documents, and all applical 2. This.permit shall expire 365 days after the date of.issuance rega received prior to the date of expiration. An extension of no more Officlal and may be subiect to a fee equal to one-half of the one 3. dtober any new Date rmit application and accompanying plans and specifications and is statutes, ordinances, regulations, policies and procedures. ss of activity. Requests for extension must be made in writing and an 180 days made be granted at the discretion of the Chief Building 1 ermitfee. If of a new permit shall be subject to the standard Re -issuance or extension of expired permits is at the sole discretion of the unlet bunging utnciai ano is not guarantees. 4. No work of any manner shall be performed that shall results in a change of the natural flow of water without prior and specific approval. 5. The permit holder shall notify the Building and Inspection Services Division in accordance with established policy of all required inspections and shall not proceed or conceal work without written approval of such work from the Building and Inspection Services Division. 6. The issuance or granting of a permit shall not be construed to be a permit for, or an approval of, an violation of any provision of any applicable code or any ordinance or regulation of this jurisdiction. Approval of work is subject to field inspection. Signature of Chief Building Official Date REQUESTS MUST BE MADE BY 11:59PM ANY BUSINESS DAY FOR INSPECTION THE FOLLOWING BUSINESS DAY. From: no-reolv(alci.wheatridae.m. us To: CommDev Farm is Subject: Online Form Submittal: New Single -Family TOWNHOME UNIT Date: Thursday, September 24, 2020 7:35:30 AM New Single -Family TOWNHOME UNIT THIS APPLICATION DOES NOT CONSTITUTE A PERMIT. DO NOT BEGIN WORK UNTIL PERMIT HAS BEEN ISSUED. Has the Master Plan Yes been approved for this project? Name of Project Wonderland at Station 53 PROPERTY INFORMATION Property Address - 11163 W. 53rd Wheat Ridge, CO "`Single Family Home Only enter one unit on Submittal* ` this application Property Owner Name Wonderland at Station 53, LLC Property Owner Phone 3035677630 Number (enter WITH dashes, eg 303-123- 4567) Property Owner Email oherron@wonderlandhomes.com Address PLAN REVIEW CONTACT INFORMATION What is your role? Owner Business Name Wonderland at Station 53, LLC Main Contact Name for Michele Beckett Plan Review Contact Phone Number 303-915-4340 (enter WITH dashes, eg 303-123-4567) Contact Email Address beckett@wonderlandhomes.com for Questions/Comments Retype Contact Email beckett@wonderlandhomes.com Address DESCRIPTION OF WORK Detailed Scope of Work - Example: New single family townhome with 2 car garage - 1,525 sq ft total (Bldg 1, B -unit) Square Footage of New Construction Foundation Plans for Specific Building Elevations of Building New Single Family Home with 2 car garage -2878 sq ft total (B1/Lot 3) M. 11163 W 53rd Dr Foundation Plan STAMPED (1).Ddf 11163 W. 53rd Drive, Lot 3 -Elevation Plan.odf Site Plan showing Unit 11163W 53rd Drive Lot 3 Site Plan odf Highlighted Floor.. .. .j..i Construction Plans Field not completed. scanned on 11'x17" or larger Finn Project Value (contract $215,919.00 Unci value or cost of ALL Gari materials and labor) Tota -d: 2878sf x $122.46 = $352,440 shed basement: 975sf x $22.45 = $21,889 436sf x $48.30 = $21,059 $395,388 SIGNATURE OF UNDERSTANDING AND AGREEMENT I assume full responsibility for compliance with applicable City of Wheat Ridge codes and ordinances for work under any permit issued based on this application. I understand that work may not begin on this property until a permit has been issued and posted on the property. Yes Yes I certify that I have Yes been authorized by the legal owner of the property to submit this application and to perform the work described above. I attest that everything Yes stated in this application is true and correct and that falsifying information in this application is an act of fraud and may be punishable by fine, imprisonment, or both. Person Applying for Michele Beckett -agent Permit APPROVED 12/16/2020 J. Jefferies Email not displaying correctly? View it in your browser. ,,,,,%%%%, Do REG.,-, �.., 0 79.8 a 7k 4 ••..• u .yam Is " ; q! V � 90 0# = We 53RD DRIVE Ilk• • • • . ` DIOIG.Iy slane0 by Michael S. • • • • • • McDaniel EMK CONSULTANTS, INC. LAND DEVELOPMENT 80. eadc°mpuranas iholl aor be e oma!°. or •" ergrwe►a/, aoronoa e Wily of Me wov/rbns a/ rhe Eieidp�g code s. FWma of aw ay "amx SERVICES AND SOLUTIONS ENGINEERING SURVEYING www.EMKC.com 7006 SOUTH ALTON WAY, BLDG. F CENTENNIAL, COLORADO 80112-2019 (303)694-1520 **OPTIONS: —FULL UNFINISHED BASEMENT PLOT PLAN JOB NO.: 13185.00 LO r M o DRAWN BY: MSM —9' BASEMENT WALLS if DATE: 08/31/2020 —FIREPLACE AT GREAT ROOM STATION 53• LLC NOTE: RAISED —DOUBLE DOORS ® STUDY FOUNDATION DSF2 —AC 13 SEER N #11163 —SUMP PUMP NOTE: NOTE: LOWER SIDING OR ADJUST GRADE AS ON SITE PLANS —TANKLESS WATER HEATER � FULL BASEMENT 10,1' 4. LOT AREA TAKEN FROM RECORDED PLAT. MUST BE ON SITE FOR INSPECTION Reviewed by the City of Wheat Ridge A, 9' WALLS ALL Projects are Engineering Division '6 Subject to Field Inspections NO EXCEPTIONS TAKEN TRACT Q (SKYLINE ESTATES FIL. 1) THREE YEARS AFTER YOU FIRST DISCOVER SUCH DEFECT. IN NO BY: Jordan Jefferies ' " ' LA = City of ,� vv uta ME`s`" DATE: 12/17/2020 815 81.4 81.9 81.7 N89'3729E . CERTIFICATION SHOWN HEREON. THIS DRAWING DOES NOT REPRESENT Commu COMMENTS: A grading certification 6 \s 8'0 P•U.E. _ l�`' Ou �g APPROVED 'pviewgdfQr�od��mpUanex with ILC is required prior to CO d 1 2% ��j q° 80.6 • �. ALONG THIS WALL 81.2 5' HOA A `b Randy Slusser 12/18/2020 ° A O0 � ° i 5 00 ° Plans Examiner Date wdmk..r "ennll• 1Jr! kiiooeee oJe pe►raltw qvm WWF saecykotkw ,,,,,%%%%, Do REG.,-, �.., 0 79.8 a 7k 4 ••..• u .yam Is " ; q! V � 90 0# = We 53RD DRIVE Ilk• • • • . ` DIOIG.Iy slane0 by Michael S. • • • • • • McDaniel L5%1. i� 82.3 4 8or3 16.0' 0_ ooDG=2 80. eadc°mpuranas iholl aor be e oma!°. or •" ergrwe►a/, aoronoa e Wily of Me wov/rbns a/ rhe Eieidp�g code s. FWma of aw ay "amx **NOTE: DROP GARAGE FLOOR AN PREPARED UNDER MY SUPERVISION �, PATIO cn 12" w EMK CONSULTANTS, INC. N 25 18.0' LO r M o LOT 4 LOT 2 if 2. THIS DOCUMENT REPRESENTS A PROPOSED BUILDING LAYOUT FOR BACKCOUNTRY RANCH N NOTE: RAISED INFORMATION SHOWN IS INCLUDED BY THE CLIENT'S REQUEST AND IS FOUNDATION DSF2 WALL (TOF) N #11163 TO THE EXTENT NECESSARY TO FLATTEN STEEP SIDE OR REAR SLOPES AND NEED TO BE DESIGNED AND CONSTRUCTED PER STRUCTURAL AND NOTE: NOTE: LOWER SIDING OR ADJUST GRADE AS VENEER ALONG SHOWN TO ACHIEVE � FULL BASEMENT 10,1' 4. LOT AREA TAKEN FROM RECORDED PLAT. 5. SEWER AND WATER SERVICE LOCATIONS ARE TAKEN FROM THE LEGAL DESCRIPTION 9' WALLS 11163 WEST 53RD DRIVE, 6. NOTICE: ACCORDING TO COLORADO LAW YOU MUST COMMENCE ANY LOT 3, BLOCK 1, LEGAL ACTION BASED UPON ANY DEFECT IN THIS SURVEY WITHIN 19t'2 THREE YEARS AFTER YOU FIRST DISCOVER SUCH DEFECT. IN NO FF=84.4 EVENT, MAY ANY ACTION BASED UPON ANY DEFECT IN THIS SURVEY BE COMMENCED MORE THAN TEN YEARS FROM THE DATE OF THE STATE OF COLORADO CERTIFICATION SHOWN HEREON. THIS DRAWING DOES NOT REPRESENT SETBACKS 4Cal.0' —83'2 8 4i STEP GRADE SIDE: 5' SIDE -CORNER: 10' 1 "-20' ry' 3• ONE 6" FT.P,PROX.8� 2 17% 79 ALONG THIS WALL 0) `b RISER �S °I RISERS _LINE TO ACHIEVE LOWER GRADE j FINISHED GRADE ALONG PORCH AN 1' 12 CAR GARAGE A SHOWN. THIS MAY ADDITIONAL 12" N TOF=83.2** ' AFFECT TO ACHIEVE ti 9.0. �; FOUNDATION DESIGN. INDICATED SIDE\ o• YARD SLOPE. % 0 0. 21?0 4 ORCH 78.91 3 _V�5 0 23% L o — %40 APPROXN IVE �'a° RISERS - ,,,,,%%%%, Do REG.,-, �.., 0 79.8 a 7k 4 ••..• u .yam Is " ; q! V � 90 0# = We 53RD DRIVE Ilk• • • • . ` DIOIG.Iy slane0 by Michael S. • • • • • • McDaniel po/py DN: C=US, ', 8 Daniel E=mmcdaniel�emkacwn, "EMIK Consultants, Inc.". ,,��','„'' CN=Mlchael S. ,. �, �,```` Data:020.08.3110:40:58-05'00' L **NOTE: DROP GARAGE FLOOR AN PREPARED UNDER MY SUPERVISION ADDITIONAL 26” (34" TOTAL) FOR AND ON BEHALF OF EMK CONSULTANTS, INC. LOT AREA: 4,516 SQUARE FEET NOTES U.E.=UTILITY EASEMENT 1. EASEMENTS SHOWN ON THIS PLAN ARE TAKEN FROM THE S.E.=SIDEWALK EASEMENT RECORDED PLAT AND MAY NOT SHOW ALL EASEMENTS OF RECORD. DS=DROP SIDING/GRADE 2. THIS DOCUMENT REPRESENTS A PROPOSED BUILDING LAYOUT FOR APPROVAL BY ZONING AND BUILDING AUTHORITIES. ANY OTHER NOTE: RAISED INFORMATION SHOWN IS INCLUDED BY THE CLIENT'S REQUEST AND IS FOUNDATION FOR INFORMATIONAL PURPOSES ONLY. WALL (TOF) 3. RETAINING WALLS ARE DESIGNED HORIZONTALLY AND VERTICALLY ONLY TO THE EXTENT NECESSARY TO FLATTEN STEEP SIDE OR REAR SLOPES AND NEED TO BE DESIGNED AND CONSTRUCTED PER STRUCTURAL AND NOTE: NOTE: LOWER SIDING OR ADJUST GRADE AS VENEER ALONG SHOWN TO ACHIEVE GEOTECHNICAL SPECIFICATIONS BY OTHERS. THIS WALL LINE. INDICATED SLOPE. 4. LOT AREA TAKEN FROM RECORDED PLAT. 5. SEWER AND WATER SERVICE LOCATIONS ARE TAKEN FROM THE LEGAL DESCRIPTION SUBDIVISION CONSTRUCTION PLANS AND SHOULD BE FIELD VERIFIED PRIOR TO HOUSE CONSTRUCTION. 11163 WEST 53RD DRIVE, 6. NOTICE: ACCORDING TO COLORADO LAW YOU MUST COMMENCE ANY LOT 3, BLOCK 1, LEGAL ACTION BASED UPON ANY DEFECT IN THIS SURVEY WITHIN QUAIL RUN FINAL PLAT, THREE YEARS AFTER YOU FIRST DISCOVER SUCH DEFECT. IN NO CITY OF WHEAT RIDGE, COUNTY OF JEFFERSON, EVENT, MAY ANY ACTION BASED UPON ANY DEFECT IN THIS SURVEY BE COMMENCED MORE THAN TEN YEARS FROM THE DATE OF THE STATE OF COLORADO CERTIFICATION SHOWN HEREON. THIS DRAWING DOES NOT REPRESENT SETBACKS A MONUMENTED SURVEY AND IS ONLY INTENDED TO DEPICT THE ACCOMPANYING LEGAL DESCRIPTION. FRONT: 10' HOUSE, 15' GARAGE (18' BOW) GRAPHIC S C A L2E0 REAR: 15' a 10, SIDE: 5' SIDE -CORNER: 10' 1 "-20' ON SITE PLANS MUST BE ON SITE FOR INSPECTION ALL Projects are CTLITHOMPSON Subject to Field Inspections August 12, 2020 Wonderland Homes 8246 Northfield Boulevard Building J, Suite #2600 Denver, Colorado 80238 Subject: Soils and Foundation Summary Letter Quail Run Block 1, Lot 3 Wheat Ridge, Colorado Project No. DN49,619-120-R1 I HOME BUYER ADVISORY Expansive and compressible soils and expansive bedrock are present at this subdivision; which results in a geologic hazard. This letter describes the soil conditions on this lot more specifically. Prospective home buyers are strongly advised to read this letter and the referenced documents. If you do not understand the risk(s) associated with the hazard and the important role you must accept to manage and mitigate the risk(s), we recommend you contact a competent geotechnical (soils) engineer for advice. CTL I Thompson, Inc. performed a Soils and Foundation Investigation for 56 lots within Quail Run and presented results in a report dated July 30, 2020. This letter presents a summary of our findings and recommendations for the sub- ject lot. The report referenced above should be reviewed for foundation design. Colorado is a challenging location to practice geotechnical engineering. The climate is relatively dry and the near -surface soils are typically dry and com- paratively stiff. These soils and related sedimentary bedrock formations tend to react to changes in moisture conditions. Some of the soils and bedrock swell as they increase in moisture and are referred to as expansive soils. Other soils can compress significantly upon wetting and are identified as compressible soils. Most of the land available for development east of the Front Range is underlain by expansive clay or claystone bedrock near the surface. The soils that exhibit compressible behavior are more likely west of the Continental Divide; however, both types of soils occur throughout the state. Expansive and compressible soils and expansive bedrock as well as shal- low groundwater that may affect basement construction are present at this subdi- vision, which constitutes a geologic hazard. There is risk that foundations and slab -on -grade floors will experience heave or settlement, and damage. Covering the ground with houses, streets, driveways, patios, etc., coupled with lawn irriga- tion and changing drainage patterns, leads to an increase in subsurface moisture conditions. Thus, some soil movement due to heave or settlement is inevitable. Fill can also soften and compress upon wetting. It is critical that all recommenda- tions in this report are followed to increase the chances that the foundations and slabs -on -grade will perform satisfactorily. After construction, homeowners must assume responsibility for maintaining the structures and use appropriate prac- tices regarding drainage and landscaping. vkd, cit Of yw> CoMMUNUY UEWLLx'MFM'r APPROVED Rayl w d far Code Comaganee Randy Slusser 8/20/2020 Plana Exwww Data arruare� weuer°�x°w.r«W-WeIMx.x+a q� 1971 West 12th AvenueI Denver, I Phone: 303-825-0777 FaColorado 80204 Tele .y°iw«°w,w xlwraym«d.a.ob«w.M,. xpnp rswia xrpx° a°Mgb°bWr«siw/w�eweu ywalab sbsalM«�r°mywOpMr ielYe111x `�= -..„_ In summary, the strata encountered in the boring on this lot consisted of 5 feet of fill, 8 feet of sandy Gay, and 2 feet of weathered bedrock underlain by claystone bedroGc to the maximum depth explored of 20 feet. Nc groundwater was encountered during this investigation. The clayey soils and bedrock are ex- pansive. Use of footings with minimum deadload is recommended. A structurally supported basement floor is recommended. Further details are described in fol- lowing paragraphs. Based on our investigation, predominantly low to moderate swelling mate- rials an: present at depths likety to influence shallow foundation and slab perfor- mance, and we believe there is low to moderate risk of ground movement suffi- cient to damage slabs-on�rede and foundations. The risk of foundation and slab movements can be mitigated, but not eliminated, by careful design, construction, and maintenance procedures. We believe the recommendations inthis report will help control risk of foundation and slab damage; they will not eliminate that risk. The builder and homebuyers should understand that slabsont3rade and, in some instances, foundations may be affected by the subsoils. Homeowner maintenance will be required to control risk. We recommend the builder provide a booklet to homebuyers that describes swelling soils and includes recommenda- tionsfor care and maintenance of homes constructed on expansive soils. Colo- rado Geologicel Survey Special Publication 431 was designed to provide this in- formation. Laboratory tests were performed on samples from this lot and nearby lots. Samples from this lot did not swell and swelled 0.5 to 1 percent when wetted. Based upon results of laboratory tests and other factors, we judge basement slab performance risk for this lot to be low. Exhibit A provides a discussion of slab per- formance risk evaluation, as well as slab installation and maintenance recom- mendations. We performed calculations of total potential ground heave and basement heave as part of our study. The calculations indicate the ground sur- face on low risk lots included in this investigation could heave less than 0.5 -inch to 3.2 inches and the basement floor slabs could heave less than 0.5 -inch to 2.0 inches. The calculated potential heave for this lot is 1.1 inches at the ground surface and 0.5 inch at basement level. It is not certain this movement will occur. If home buyers cannot tolerate movement of a slab-on�rede basement floor, they should select a lot where a structurelty supported floor will be constructed or request that a structurally supported floor be installed. I'A Guitle b Swelling Soib Por Coloretlo Homebuyere antl Homeovmere; Second Etlrion Revbetl end Uptlated by Devitl C. Nae, Cobreda Geobgkal Survey, Oepatlment of Naturel Reeaurcea, Denver, Coloredo, 2007. QUNL RUN aLOCKi, LOTS Considering the subsurface conditicns at this lot, we recommend construction of the proposed residence on a footing foundation with minimum deadload. Footings should be designed for a maximum allowable soil pressure of 3,000 psf with a minimum deadload pressure of 1,000 psf. Footings should be at least 16 inches in width. Column pads should be at least 18 inches square. There should be a 4 -inch continuous void between the footings to concentrate the deadload, if interrupted footings are necessary. Exterior footings should be protected fiom frost action with at least 3 feet of cover. It is sometimes necessary to alter the foundation design based on cend'rtions exposed during construction. The buyer can discuss the changes, 'rf any, with the builder. Basement and/ar foundation walls and grade beams that extend below grade should be designed for lateral earth pressures where backfill is not present to about the same extent on both sides of the wall. Our experience suggests basement walls can deflect or rotate slightly under normal design loads and that this deflection typically does not affect the structural integrity of the walls. We reo- ommend design of the basement walls on this lot using an equivalent fluid den- sity of at least 60 pounds per cubic foot. This value assumes slight deflection of the wall can occur, generally less than 0.5 to 1 percent of the wall height. Some minor cracking of the walls may occur. A subsurface drain is recommended around the entire perimeter of the lowest excevation area for this residence. The drain should lead to a positive gravity outlet or to a sump where water can be removed with a pump. The provi- sion of the drain will not eliminate slab movement or prevent moist conditions in crawl spaces. The pump must be maintained by the home owner. Proper design, construction and maintenance of surface drainage are criti- cal to the satisfactory performance of foundations, slabs-on�rede, and other im- provements. Landscaping and irrigation practices will also affect performance. Exhibit B contains our recommendations for surface drainage, irrigation, and maintenance. The concept of risk is an important aspect with any geotechnical evalua- tion, primarily because the methods used to develop geotechnical recommenda- tions do not comprise an exact science. We never have complete knowledge of subsurface conditions. Our analysis must be tempered with engineering judg- ment and experience. Therefore, the recommendations presented in any ge- otechnicel evaluation should not be considered risk-free. We cannot provide a guarantee that the interaction between the soils and a proposed structure will be as desired or intended. Our recommendations represent ourjudgment of those measures that are necessary to increase the chances that the structure will per- form satisfactorily. It is critical that all recommendations in the referenced report are followed. Home owners must assume responsibility for maintaining the struo- ture and use appropriate practices regarding drainage and landscaping. QUNL RUR BLOCKI, LOTS As this letter is meant only as a summary of our findings and recommen- dations for the subject lot, we recommend home buyers review the Soils and Foundation Investigation from which this summary is taken. CTL I THOMPSON, INC. Alan J. Lisowy Aug 12 2020 QUAIL RUN 4 BLOCK 1, LOT 3 EXHIBIT A SLAB PERFORMANCE RISK EVALUATION, INSTALLATION AND MAINTENANCE As part of our evaluation of the subsoils and bedrock, samples were tested in the labore- tory using a swell test. In the test procedure, a relatively undisturbed sample obtained during drilling is first loaded and then flooded with water and allowed to swell. The pressure applied prior to wetting can approximate the weight of soil above the sample depth or be some standard load. The measured percent swell is not the sole uiteria in assessing potential movement of slabson-grade and the risk of poor slab performance. The resuRs of a swell test on an individ- ual lot are tempered with data from surrounding lots, depth of tests, depth of excavation, soil profile, and other tests. This judgment has been described by the Coloredo Association of Ge- otechnical Engineers (CAGE, 1996) as it relates to basement slab -on -grade floors. It can also be used to help judge pertormance risk for other slabs-ony�rede such as garage floors, drive- ways, and sidewalks. CTL Thompson also performs potential heave calculations to aid in our judgment. The risk evaluation is considered when we evaluate appropriate foundation systems for a given site. In generel, more conservative foundation designs are used for higher risk sites to control the likelihood of excessive foundation movement. As a resufl of the Slab Performance Risk Evaluation, sites are categorized as low, mod- erate, high, or very high risk. This is a judgment of the swelling charecteris5ce of the soils and bedrock likety to influence slab performance. REPRESENTATNE MEASURED SWELL AND CORRESPONDING SLAB PERFORMANCE RISK CATEGORIES Slab Performance Risk Cate o Representative Percent Swell` 500 sf Suroha a Representative Percent Swell` 1000 sf Suroha e Low 0 to <3 0 to <2 Motlerete 3 to <5 2 to <4 High 5 to <8 4 to <8 Very High > 8 > 8 'Note: The representative percent swell values presented are not necessarily measured values; rether, they are a judgment of the swelling charederistice of the sail and bedrock likely to influence slab performance. The reting of slab performance risk on a site as low or high is not absolute. Rather, this rating represents a judgment. Movement of slabs may occur with time in low, moderate, high, and very high risk areas as the expansive soils respond to increases in moisture content. Over- all, the severity and frequency of slab damage usualty is greater in high and very high rated ar- eas. Heave of slabson�rede of 3 to 5 inches is not uncommon in areas rated as high or very high risk. On low and moderete risk sites, slab heave of 1 to 2 inches is considered normal and we believe in the majority of instances, movements of this magnitude constitute reasonable slab performance; more heave can occur. Slabs can be affected on all sites. On lots refect as high or very high risk, there is more likelihood of need to repair, maintain or replace main level and gar- age floors and exterior flatwork. The home buyer should be advised slabs-ony�rede may move and crack due to heave or settlement and that there may be maintenance costs associated during and after the builder orwL aux Exhibit A-1 BLOCK 1, LOT 3 `�= _.:.�;_ warranty period. Heave or settlement may require maintenance of finish details to control dam- age. Our expedence suggests that soil moisture increases below residence sites due to cover- ing the ground with the house and exterior flatwork, coupled with the introduction of landscape irrigation. In most cases, slab movements (if any) resulting from this change occur within three to five years. For portions of the houses where conventional slabs-on-grede are used, we recommend the following precautions. These measures will not keep slabs-on�rede from heaving; they tend to mitigate damages due to slab heave. Slab -on -grade floor construction should be limited to areas where slab movement and cracking are acceptable to the builder and home buyer. 2. The IMemational Residential Code (IRC R506) states that a flinch base course layer consisting of clean graded sand, gravel, crushed stone or crushed blast fur- nace slag shall be placed beneath below slab-on�rede floors (unless the under- lying soils are free -draining), along with a vapor retarder. Installation of the base course and vapor retarder is not common in this area. Historically, there has been some cencem that installation of clean base course could allow wetting of expansive soils to spread from an isolated source. IRC states that the vapor retarder can be omitted where approved by the building official. The merits of installation of a vapor retarder below floor slabs depend on the sensitivity of floor coverings and building use to moisture. A propedy installed vapor retarder is more beneficial below concrete slab-on-grede floors where floor coverings, painted floor surtaces, or products stored on the floor will be sensitive to moisture. The vapor retarder is most effective when concrete is placed directly on top of d, rather than placing a sand or gravel leveling course between the va- porretarder and the floor slab. Placement of concrete on the vapor retarder may increase the risk of shrinkage cracking and cuding. Use of concrete with reduced shrinkage charecteristice including minimized water content, maximized coarse aggregate content, and reasonaby low slump will reduce the dsk of shdnkage cracking and cuding. Considerations and recommendations for the installation of vapor retarders below concrete slabs are outlined in Section 5.2.3.2 of the 2015 American Concrete Institute (ACI) Committee 302, °Guide for Concrete Floor and Slab Construction (ACI 302.1 R-15)". 3. Conventional slabs should be separated from eMerior walls and interior bearing members with a slip joint that allows free vertical movement of the slabs. These joints must be maintained by the home buyer to avoid trensfer of movement. 4. Underelab plumbing (if any) should be thoroughly pressure tested during con- struction for leaks and be provided with flexible couplings. Gas and waterlines leading to slab -supported appliances should be constructed with flexibility. The homebuyer must maintain these connections. 5. Use of slab bearing partitions (if any) should be minimized. Where such partitions are necessary, a slip joint (or float) allowing at least 3 inches of free vertical slab movement should be used. Doorways should also be designed to allow vertical movement of slabs. To limit damage in the evert of movement, sheetrock should OWUL RUN Exhibit A-2 BLOCK 1, LOT 3 not extend to the floor. The home buyer should monitor partition voids and other connections and re-establish the voids before they dose to less than'frinch. 6. Plumbing and utilities that pass through slabs (if any) should be isolated from the slabs. Heating and air cenditioning systems constructed on slabs should be pro- vided with flexible connections capable of at least 3 inches of vertical movement so slab movement is not transmitted to the ductwork. These connections must be maintained by the home buyer. Roofs that overhang a patio or porch should be constructed on the same founda- tion as the residence. Isolated piers or pads may be installed beneath a roof overhang provided the slab is independent of the foundation elements. Patio or poroh roof columns may be positioned on the slab, directly above the foundation system, provided the slab is structural and supported by the foundation system. Structural porch or patio slabs should be constructed to reduce the likelihood that settlement or heave will affect the slab by placing loose bac�ll under the struo- turelly supported slab or constructing the slab over void -forming materials. 8. Patio and poroh slabs without roofs and other exterior flatwork should be isolated from the foundation. Movements of slabs should not be transmitted to the foun- dation. Decks are more flexible and more easily adjusted in the evert of move- ment. 9. Frequent control joints should be provided in conventional slabs -on -grade to re- duce problems assodated with shdnkage cracking and curling. Panels that are approximately square generely pertorm better than rectangular areas. We sug- gest an additional joint about 3 feet away from and parellel to foundation walls. OWUL RUN Exhibit A-3 BLOCK 1, LOT 3 `�= -..„_ EXHIBIT B SURFACE DRAINAGE, IRRIGATION AND MAINTENANCE Performance of foundations and concrete flalwork is influenced by the moisture condi- tions existing wdhin the foundation soils. Surface dreinage should be designed to provide rapid runoff of surface water away from proposed residences. Proper surface drainage and irrigation practices can help control the amount of surtace water that penetretes to foundation levels and contributes to set8ement or heave of soils and bedrock that support foundations and slabson- grade. Positive drainage away from the foundation and avoidance of irrigation near the founda- tion also help to avoid excessive wetting of backfill soils, which can lead to increased backfill settlement and possibly to higher laterel earth pressures, due to increased weight and reduced strength of the ball. CTL � Thompson, Inc. recommends the following precautions. The home buyer should maintain surtace dreinaoe and, if an irrioation system is installed. it should sub- stantialN conform to these recemmendations. Wetting or drying of the open foundation, utility and earthwork excavations should be avoided. 2. The ground surtace surrounding the exterior of each residence should be sloped to drain away from the building in all directions. For non -basement residences, we recommend a minimum constructed slope of at least 8 inches in the first 10 feet (5 percent) in landscaped areas around each residence, where prectical. For residences with basements, we recommend a minimum constructed slope of at least 12 inches in the first 10 feet (10 percent) in landscaped areas around each residence, where practical. Between houses that are separated by a distance of less than 10 feet, the con- structed slope should generelly be at least 5 percent to the swale used to convey water out of this area. 3. Swales used to convey water across yards and between houses should be sloped so that water moves quickly and does not pond for extended periods of time. We suggest minimum slopes of about 2 to 2.5 percent in grassed areas and about 2 percent where landscaping rock or other materials are present. If slopes less than about 2 percent are necessary, concrete -lined channels or plastic pipe should be used. 4. Backfill around the foundation walls should be moistened and compacted. 5. Roof downspouts and dreins should discharge well beyond the limits of all back- fill. Splash blocks and/or extensions should be provided at all downspouts so wa- terdischarges onto the ground beyond the backfill. We generally recommend against burial of downspout discharge. Where it is necessary to bury downspout discharge, solid, rigid pipe should be used and d should slope to an open grev'rty outlet. Downspout extensions, splash blocks and buried outlets must be main- tained by the home owner. OVNL RUN Exhibit 61 BLOCK 1, LOT � Q 0 menta. Landscaping should be carefully designed and maintained to minimize irrigation. Plants placed close to foundation walls should be limited to those with low moisture requirements. Irrigated grass should not be located within 5 feet of the foundation. Sprinklers should not discharge within 5 feet of foundations. Plas- tic sheeting should not be placed beneath landscaped areas adjacent to founda- tion walls or grade beams. Geotextile fabric will inhibit weed growth yet still allow natural evaporation to occur. The design and wnstruction criteria for foundations and floor system alternatives were compiled with the expectation that all other recommendations presented in this report related to surface and subsurface dreinage, landscaping irrigation, bar�ll compaction, etc. will be incorporated into the project. It is critical that all rewmmendations in this report are followed. OUNL RUN Exhibit 62 BLOCK 1, LOT �