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Home My WebLink AboutObservation of ExcavationFiber Shelter Foundation Base Course (See attached mapLocation: Performed by: Comments:Concrete forms and rebar were placed prior to our inspection. Excavation Contractor:John RileyNeuComm Solutions Name Company On-Site Notifications Karen Diack NeuComm Solutions Geotechnical Report Geotechnical Engineer:NWCC Report Date:06-19-2018 Anticipated Condition:Moisture Conditioned and Compacted Encountered Conditions Excavation Condition:We observed that the contractor had excavated down into the existing soils consisting of sands and gravels. This material appears similar to a contaminated class 6 abc. Per the soils report, structural backfill materials permitting a bearing pressure of 3000 psf maybe used as a base for foundation systems. Based upon our experience and on the IBC presumed soil load bearing pressures in Table 1806.2, this soil type, at the elevations and time of our observations, likely meets or exceeds the presumed allowable bearing pressure of 3000 psf. However, the presence of weaker subsurface soil layers resulting in allowable bearing pressure of less than 3,000 psf cannot be ruled out by surface observations only. We observed the contractor had scarified, moisture conditioned and re-compacted the soils at the base of this excavation with the use of a mini excavator and jumping jack compactor. The soils appeared moist, dense and generally unyielding. Conformance Excavation Conditions: Conforms Does Not Conform Not Applicable Not Observed Report No.:02-5136 Photos Highlighted equals area represented. NeuComm Solutions 18168 E Weaver Drive Aurora, CO 80016 Karen Diack Garfield County Landfill - Fiber Shelter Client: Excavation / Open Hole Observations Work Order No.:May 28, 2025 25-6558.Excavation-OpenHole.0001; ver: 1Report Date: Work Order Date:May 27, 2025 Reviewed By:Chris Hutto Results apply only to the specific items and locations referenced and at the time of testing, observations or special inspections. This report should not be reproduced, except in full, without the written permission of GROUND Engineering Consultants, Inc. 41 Inverness Drive East, Englewood, Colorado www.groundeng.com 303-289-1989 Englewood | Commerce City | Loveland | Granby | Gypsum | Colorado Springs Page 1 of 1 Shelter and Generator Foundation (See Attached)Placement Location: COD Gypsum ServicesConcrete Contractor:Performed by:Grace Layton Placement Method:Tailgated Weather:Sunny Finish Method:Hand Finished|Trowel Finished Total Quantity Placed:6 yd³ Sample No.Location Sampled From Quantity (yd³) Truck No. Ticket No. Batch Time Test Time Air Temp. (ºF) Water Added (gal) 1 Location 1 (See Attached)Point of Delivery 6 56607 52 11:17 AM 12:25 PM 75 0 Sampling (ASTM C172 / AASHTO R60 / CDOT CP61) Field Tests (ASTM C138, C143, C231, and C1064 / AASHTO T119, T121, and T152) Sample No.Concrete Temp. (ºF)Slump (in)Air Cont. (%)Meas. Vol. (ft³)Empty Meas. (lb)Full Meas. (lb)Unit Wt. (pcf)Lab Samples Cast 1 71 5 5.0 0.250 8.60 44.00 141.6 Yes Compressive Strength (ASTM C31 and C39 / AASHTO T22 and T23) Sample No.Lab ID Age (d)Diameter (in)Area (in²)Fracture Type Max. Load (lb-f)Corrected Strength (psi) Strength at Acceptance (psi)1 C1346 7 4.00 12.57 3 / Columnar 51,800 4,120 - C1347 28 4.00 12.57 3 / Columnar 70,480 5,610 5,610 C1348 28 4.00 12.57 3 / Columnar 71,410 5,680 5,680 C1349 28 4.00 12.57 3 / Columnar 69,180 5,500 5,500 Average Compressive Strength (psi):5,600 Test Specified Air Content (%)5 to 8 Slump (in)3 to 5 Unit Weight (pcf)- Comp. Strength (psi)4500 Mix Design - - - - On-Site Notification(s) Karen Diack with NeuComm Solutions Item / Structure Type Exterior Concrete Mix Placed United Companies 37010749 On-site Notifications, Specification, and Mix Information NeuComm Solutions 18168 E Weaver Drive Aurora, CO 80016 Karen Diack Garfield County Landfill - Fiber Shelter Client: Report Date:Work Order No.: Concrete 25-6558.Concrete.0001; ver: 3Jun 24, 2025 Reviewed by:Work Order Date:May 27, 2025 Chris Hutto Results apply only to the specific items and locations referenced and at the time of testing, observations or special inspections. Unless noted otherwise, specimens were received in adequate condition. Compressive strength specimens, if tested, were capped in accordance with ASTM C1231 or ASTM C617, as applicable. This report should not be reproduced, except in full, without the written permission of GROUND Engineering Consultants, Inc. 101 Airpark Drive, Unit A, Gypsum, Colorado www.groundeng.com 970-524-0720 Englewood | Commerce City | Loveland | Granby | Gypsum | Colorado Springs Page 1 of 2 Photos Highlighted = Area represented Number = Approximate test location Placement of concrete via tailgate. NeuComm Solutions 18168 E Weaver Drive Aurora, CO 80016 Karen Diack Garfield County Landfill - Fiber Shelter Client: Report Date:Work Order No.: Concrete 25-6558.Concrete.0001; ver: 3Jun 24, 2025 Reviewed by:Work Order Date:May 27, 2025 Chris Hutto Results apply only to the specific items and locations referenced and at the time of testing, observations or special inspections. Unless noted otherwise, specimens were received in adequate condition. Compressive strength specimens, if tested, were capped in accordance with ASTM C1231 or ASTM C617, as applicable. This report should not be reproduced, except in full, without the written permission of GROUND Engineering Consultants, Inc. 101 Airpark Drive, Unit A, Gypsum, Colorado www.groundeng.com 970-524-0720 Englewood | Commerce City | Loveland | Granby | Gypsum | Colorado Springs Page 2 of 2