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HomeMy WebLinkAboutEngineer Report 04.30.2019Huddleston-Berry Engineering & Testing, LLC Jody Maloley 3768 Highway 82, Suite 101 Glenwood Springs, Colorado 81601 Subject: Slope Evaluation. 3768 Highway 82 Glenwood Springs, Colorado 2789 Riverside Parkway Grand Junction, Colorado 81501 Phone: 970-255-8005 Info@huddlestonberry.com April30,2019 Proj ect#O I 936-000 I RECEIVED MAY i} B 2OIg GARFIELD COUNTY COMMUNITY DEVELOPMENT Dear Ms. Maloley, At your request, Huddleston-Berry Engineering & Testing, LLC (HBET) prepared this letter regarding 3768 Highway 82 in Glenwood Springs, Colorado. HBET understands that the municipality has concerns regarding the significant cutslope behind the residence with regard to potential impacts to Red Canyon Road. In order to evaluate the hillside, HBET conducted reconnaissance of the site on Apri122,2019. ATThat time, HBET observed the subject near vertical cutslope at the northeast corner of the property. The cutslope was approximately ten to twelve feet in height and the exposed soils consisted of cobbles and boulders in a sandy clay matrix. Above the cutslope, the natural slopes rose moderately to steeply to the east/southeast. The natural slopes were vegetated with trees and scrub brush. Photographs taken during the reconnaissance are attached. Based upon information provided, HBET understands that the original cutslope was created nearly three years ago and recently expanded. At the time of our investigation, HBET observed no evidence of instability in the cutslope. In addition, HBET observed no evidence of instability in the hillside above the cutslope. In general, based upon our observations at the site, area geology, and experience in slope stability, HBET does not believe that the cutslope behind your residence poses any risk to Red Canyon Road. However, the hillside slopes are steep and future rockfalls may adversely impact your residence. We are pleased to be of service to your project. Please contact us if you have any questions or comments. Respectfully Submitted: Huddleston-Berry Engineering and Testing, LLC Michael A. Berry, P.E. Vice President of Engineering Looking along Cutslope from above Looking up towards Red Canyon Road from above cutslope Looking down at cutslope from slopes above Looking down hillside from Red Canyon Road Dave Argo From: Sent: To: Jody Maloley < networkinteriorsgroup@gmail.com > Tuesday, luly 24,20L812:42 PM Dave Argo Re: 3768 Highway 82 - Bldg. Permit #BLRE-06-17-5304Subject: Huddleston Berry is coming to New Castle next week. We are going to save big trip charges and run him over to evaluate cut. Jody Sent from my iPhone on Jul 17,2018, at 10:00 AM, Dave Argo <dareo@garfield-countv'com> wrote: Jody: Sorry that it's taken me a few days to get back to you, but Andy Schwaller and I made a site visit to your property last Friday to view existing site conditions for your proposed storage building to be located east of the existing residence. The following comments summarize our site visit relative to your building permit application for placing a new storage building in this location: 1.. Geotechnical Engineering Report - Now that we know the size and depth of the existing cut slope area which was excavated to provide a flat pad for the proposed building, we can definitively say that a Grading Permit application was required for this work - in spite of what you were told by your contractor. As stated in prior correspondence, our office has concerns about slope stability, drainage, and potential undermining of County Road L1-5 above your property. Following our site visit, we require that you have a Colorado licensed Geotechnical Engineer evaluate existing site conditions and provide our office with a report of their findings including any remedial measures that may need to be taken to conform with Garfield County's Land Use & Development Code. *Please Note: This report will need to be submitted to our office whether you ultimately decide to build or not. 2. Buildine Des as Submitted - lf you choose to continue with the storage building as originally submitted to our office, we will need to have all items listed in our "Supplemental lnformation Request" addressed before we can finalize our review and issue a building permit. This list of items was emailed to you on July 1-1. 3. Other Options - Garfield County's Building Resolution does exempt certain one-story detached accessory structures used as tool and storage sheds, provided the floor area does not exceed L20 square feet. However, placement of a storage shed as described above still needs to comply with the 25-foot setback requirement from the northern property line. Other "temporary structures" over l-20 square feet in size are also subject to Building Permit requirements. Please let me know if you'd like to discuss these requirements further, and if you like, we are happy to meet with you in person here in our office. After reviewing your options with your builder & engineering consultants, please let us know how you want to proceed. Until we hear back from you we will place your project in our "pending" files. Thank you for your attention to this matter Dave Argo Plans Examiner i Dave Argo From: Sent: To: Cc: Subject: Dave Argo Tuesday, July L7,2018 L0:00 AM 'Jody Maloley' Andy Schwal ler (aschwaller@ garfield-county.com) RE:3768 Highway 82 - Bldg. Permit #BLRE-06-17-5304 Jody: Sorry that it's taken me a few days to get back to you, but Andy Schwaller and I made a site visit to your property last Friday to view existing site conditions for your proposed storage building to be located east of the existing residence. The following comments summarize our site visit relative to your building permit application for placing a new storage building in this location: 1. Geotechnical Engineering Report - Now that we know the size and depth of the existing cut slope area which was excavated to provide a flat pad for the proposed building, we can definitively say that a Grading Permit application was required for this work - in spite of what you were told by your contractor. As stated in prior correspondence, our office has concerns about slope stability, drainage, and potential undermining of County Road 1L5 above your property. Following our site visit, we require that you have a Colorado licensed Geotechnical Engineer evaluate existing site conditions and provide our office with a report of their findings including any remedial measures that may need to be taken to conform with Garfield County's Land Use & Development Code. *Please Note: This report will need to be submitted to our office whether you ultimately decide to build or not. 2. Buildins Desisn as Submitted - lf you choose to continue with the storage building as originally submitted to our office, we will need to have all items listed in our "Supplemental lnformation Request" addressed before we can finalize our review and issue a building permit. This list of items was emailed to you on July LL. 3. Other Options - Garfield County's Building Resolution does exempt certa¡n one-story detached accessory structures used as tool and storage sheds, provided the floor area does not exceed 1-20 square feet. However, placement of a storage shed as described above still needs to comply with the 25-foot setback requirement from the northern property line. Other "temporary structures" over L20 square feet in size are also subject to Building Permit requirements. Please let me know if you'd like to discuss these requirements further, and if you like, we are happy to meet with you in person here in our office. After reviewing your options with your builder & engineering consultants, please let us know how you want to proceed. Until we hear back from you we will place your project in our "pending" files. Thank you for your attention to this matter Dave Argo Plans Examiner Garfield County Community Development Department L08 8th Street, Suite 401 Glenwood Springs, CO 8L601 Tel: 970-945-8272 Ext. 1.6L0 Ema il : d a rg o @ g a rfi e I d-cou nty. com Web : ga rfi eld-co u nty.com CONFIDENTIALITY NOTICE: This emoil communicat¡on and ony files transmitted olong with ¡t are ¡ntended only for the person or ent¡ty to which it Ìs øddressed. If you have received this emøil in error, please immediøtely notlfy the sender by emaíl and delete it from your files. 1 Garfield County BUILDING DEPARTMENT 1O8 Eighth Street, Suite 4O7, Glenwood Springs, CO 87601 Tel: (97O) 945-8272 Supplemental Information Request Building Permit: Applicant: Address: Project Description: Date: Plan Review Status: #BLRE-06-18-5304 Jody Maloley 3768 Highway 82, Glenwood Springs Detached Garage July tt,2OLB "PENDING" . . . Awaiting clarifications & supplemental information as described below We have completed a preliminary review of your proposed Detached Garage and have a noted several issues which require additional information be submitted to our office. The following items must be addressed before we can finalize our plan review & issue a perm¡t for this project: L. Propertv Owner & Statement of Authoritv - The permit application shows Jody Maloley as the property owner, the Assessor's office records list ownership as JSK Holdings LLC, and the application is signed by Robert Schneider (the contractor). Whenever we receive a permit application not signed by the property owner of record we need to receive a statement of authority from the valid owner st¡pulating that the signee is their duly chosen representative, Please submit to our office. 2. General Questions & Comments: a. lntended Use of Structure - Will this structure be used for commercial or residential purposes? Please clarify. b. Egress Door Required: A36" x 80" minimum size walk door is required for egress purposes in addition to the (4) overhead doors. Please revise & resubmit plans. c. Conditioned lnterior - Will this structure be heated? lnsulation/drywall shown, but no mechanical or heating equipment is identified. Please clarify' d. Deta¡ls - Design details as shown on Sheet A-5 appear to be somewhat generic and do not match up with Structural details shown on Sheet 52.1- - please clarify inconsistencies. 3. Front Yard Setback Encroachment - As shown on the site plan included in the plans, the building encroaches into the required 25-foot front yard setback along the northern property line and will need to be relocated accordingly. Please revise and include setback dimensions from property lines and other structures. For additional site plan requirements, see below. Ensineered Site Gradins & Drainage Plan - Existing grades at the project site are greater than a 2Oo/o slope. Per Garfield County requirements a Colorado licensed Professional Engineer is required to prepare and wet seal a Site Grading and Drainage Plan for this project (refer to Garfield County's Land Use & Development Code, Section 7-2071. Pending the Engineer's assessment of existing site conditions and review by Road & Bridge Dept., there may be additional requirements for hazard mitigation for potential rock fall hazards and/or considerations for County Road 115 above. Also, a Grading Permit is required for excavation work already completed at garage footprint. Soils Report - Please provide a digital copy of soils report by Huddleston Berry as referenced on Structural drawings. Structural Engineer Drawings - Based on limited site grading information, it appears that concrete block wall may serve as a retaining wall at backside of this structure because of the steeply sloping hillside above. However, the structural drawings do not indicate fully grouted CMU block cells nor significant steel reinforcing as we would typically expect. Engineer to verify final grades on backside of this wall and coordinate actual site conditions with Engineered Site Grading & Drainage Plan as described above. lf reta¡ning wall is required at backside wall, does this affect footing/foundation? 5 6