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Home My WebLink AboutObservation of Excavation ReportKurmer & AMellates, k1c•0 5020 County Road 154, Glenwood Springs, CO 81601 K Geotedmical and Materials Engineers Phone: (970) 945-7988, Fax: (970) 945-8454 and Environmental Scientists Email: kaglenwood(a�kumarusa.com CONSTRUCTION OBSERVATION REPORT Client: D.M. Neuman Construction Attn: Jason Neuman P.O. Box 2317 Glenwood Springs, Colorado 81602 Project No.: 18-7-692.A Day: Monday Date: 12/9/19 Page: 1 of 1 Project: Proposed Garage, 2808 Four Mile Road (County Road 117), Near Bottom of Bershenyi Dip, Garfield County, Colorado Weather: Cloudy, calm, light snow Temperature: 330F at 10:35 am Construction Activities Observed: In preparation for interior under slab backfill placement, D.M. Neuman Construction was starting to screen excavated stockpiled soil to remove roots, limbs and over size rock. Imported -3" base course reportedly from Sievers pit and pit run gravel reportedly from the Gould Airport Storage site had been stockpiled on site to be blended with the screened on site material for the under slab backfill. Equipment in Use: 3.5" grizzly screen, 1" rotating screen attachment on skid steer loader, loader, excavator Kumar's Site Activities: As requested, met with Jason Neuman and Alex with D.M. NeumanT and observed stockpiled materials and screening operation. It was proposed to blend the materials to make suitable interior under slab backfill material. Based on observation of the stockpiles, we recommended that rock larger than 6 inches be removed from the pit run material and a 1 to 1 blend by volume of either imported material and the on site screened material. We obtained large bulk samples of the 2 proposed 1 to 1 blended materials and submitted them to our lab for classification and standard Proctor tests. The laboratory test results are attached. Verbal Communication: Jason Neuman and Alex with D.M. Neuman Construction. distribution: D.M. Neuman Construction (infoC&dmneuman.com) D.M. Neuman Construction — Jason Hadland (ih(&dmneuman.com) D.M. Neuman Construction — Jason Neuman (imn(&dmneuman.com) TJ W/ Thomas J. Westhoff Steven L. Pawlak, P.E. Field Technician Reviewed By Laboratory Proctor Compaction Test Report 135 130 125 U d C t� 12012,� 0 115 NN ZAV for Sp.G. _ 2.65 1101 1 1 1 1 1 +M77 I 5 7 9 11 13 15 17 Water content, % —9 - Rock Corrected --o-- - Uncorrected Test specification: ASTM D 698-12 Method C Standard ASTM D4718-15 Oversize Corr. Applied to Each Test Point Elev/ Depth Classification Nat. Moist. Sp.G. LL PI % > 3/4 in. % < No.200 USCS AASHTO GC -GM A-1-b 24 4 30 25 ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION Maximum dry density = 129.3 pcf Optimum moisture = 8.9 % 119.0 pcf 12.3 % Silty Clayey Gravel with Sand, -3" Sievers Pit & Screened On Site Soil Blended 1 to 1 by volume in field Project No. 18-7-692.A Client: D.M. Neuman Construction Project: 2808 Four -Mile Road (CR 117) -Bottom of Bershenyi Dip, Garfield County Colorado o Source of Sample: On Site Sample Number: 501-19 Remarks: Rock correction limited to 30% retained on 3/4" screen per ASTM D698. See Figure 3A for classification test results. Figure 3 Kumar & Associates, Inc. Glenwood Springs, Colorado Tested By: KO Checked By: TJW Particle Size Distribution Report 000 o 000 0 0�0 100 I I I I I I I I I I I I I I 90 I I I I I I I I I I I I I I I I I I I I I I I I I I I I 80 I I 1 1 I I I I I I I I I 70 I I I I I I I I I I I I I I I Z 60 LL I z 50 I I I I w I I U0_ I I I I I I I I I I I I I W 40 I I I I I I I I I I I I I 30 I I I I I I I I I I I I I 20 I I I I I I I I I I I I I I I I I I I I I I I I I I I I 10 I I I I I I Ali I Illjl �I I I I 01 1 100 10 1 0.1 0.01 0.001 GRAIN SIZE - % +3„ % Gravel I % Sand Coarse Fine Coarse Medium 0 33 12 4 10 SIEVE SIZE PERCENT FINER SPEC.` PERCENT PASS? (X=NO) 3" 100 11/2" 78 3/4" 67 3/8" 60 #4 55 #8 52 #16 49 #30 44 #50 37 #100 32 #200 25 (no specification provided) Source of Sample: On Site Sample Number: 501-19 Kumar & Associates, Inc. Glenwood Sprinqs, Colorado % Fines Fine Silt C 16 25 Soil Description Silty Clayey Gravel with Sand, -3" Sievers Pit & Screened On Site Soil Blended 1 to 1 by volume in field Atterberg Limits PL= 20 LL= 24 PI= 4 Coefficients D90= 55.6062 D85= 47.5015 D60= 9.5250 D50= 1.4867 D30= 0.1231 D15= D10= CUE Cc= Classification USCS= GC -GM AASHTO= A-1-b Remarks See Figure 3 for Standard Proctor results. Date: 12/09/ 19 Client: D.M. Neuman Construction Project: 2808 Four -Mile Road (CR 117) -Bottom of Bershenyi Dip, Garfield County Colorado Project No: 18-7-692.A Fiaure 3, Tested By: KO Checked By: TJW Laboratory Proctor Compaction Test Report 135 0 130 125 U a c (1) o 0 120 115 ZAV for Sp.G. _ 110 2.65 4 6.5 9 11.5 14 16.5 19 Water content, % e - Rock Corrected --o— - Uncorrected Test specification: ASTM D 698-12 Method C Standard ASTM D4718-15 Oversize Corr. Applied to Each Test Point Elev/ Depth Classification Nat. Moist. Sp.. G LL PI % > 3/4 in. % < No.200 USCS AASHTO GC -GM A-1-b 23 4 30 22 ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION Maximum dry density = 131.3 pcf Optimum moisture = 7.7 % 121.3 pcf 10.6 % Silty Clayey Gravel with Sand, Airport Storage Import & Screened On Site Soil Blended 1 to 1 in field Project No. 18-7-692.A Client: D.M. Neuman Construction Project: 2808 Four -Mile Road (CR 117) -Bottom of Bershenyi Dip, Garfield County Colorado o Source of Sample: On Site Sample Number: 502-19 Remarks: Rock correction limited to 30% retained on 3/4" screen per ASTM D698. See Figure 4A for classification test results. Figure 4 Kumar & Associates, Inc. Glenwood Springs, Colorado Tested By: KO Checked By: TJW W Z Z W U W W IL Particle Size Distribution Report C C 0 0 0 0 0 0 0 t0 M N M # # # # # # # # # 100 I I I I I I I I I I I I I I 90 I I I I I I I I I I I I I I I I I I I I I I I I I I I I 80 I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 60 I I I I I I I I I I I I I 50 I I I I I I I I I I I I I I I I I I I I I I I I I I I 40 I I I I I I I I I I I I I 30 I I I I I I I I I I I I I I I I I I I I I I I I I 20 I I I I I I I I I I I I I I I I I I I I I I I I I I I I 10 I I I I I I I I I I I I I I I 0 I I I I I I I I I I I I I I 100 10 1 0.1 0.01 0.001 GRAIN SIZE - %+3" % Gravel % Sand Coarse Fine Coarse Medium 10 26 14 3 9 SIEVE SIZE PERCENT FINER SPEC* PERCENT PASS? (X=NO) 5" 100 3" 90 1 1/2" 71 3/4" 64 3/8" 57 #4 50 #8 48 #16 44 #30 41 #50 34 #100 28 #200 22 (no specification provided) Source of Sample: On Site Sample Number: 502-19 % Fines Fine Silt 16 22 Soil Description Silty Clayey Gravel with Sand, Airport Storage Import & Screened On Site Soil Blended 1 to 1 in field Atterberg Limits PL= 19 LL= 23 P1= 4 Coefficients D90= 76.2000 D85= 63.4946 D60= 12.8197 D50= 4.7500 D30= 0.1890 D15= D10= Cu= Cc= Classification USCS= GC -GM AASHTO= A-1-b Remarks See Figure 4 for standard Proctor results. Date: 12/09/ 19 Kumar & Associates, Inc. Client: D.M. Neuman Construction Project: 2808 Four -Mile Road (CR 117) -Bottom of Bershenyi Dip, Garfield County Colorado Glenwood Springs, Colorado ; Project No: 18-7-692.A Figure 4A Tested By: KO Checked By: TJW K+A Geotechnical and Materials Engineers and Environmental Scientists Z� 5020 County Road 154, Glenwood Springs, CO 81601 Phone: (970) 945-7988, Fax: (970) 945-8454 Email: kaglenwood((bkumarusa.com Earthwork Compaction Testing Report Client: D.M. Neuman Construction Project No.: 18-7-692.A Day: Thursday Attn: Jason Neuman Date: 12/12/19 P.O. Box 2317 Page: 1 of 1 Glenwood Springs, Colorado 81602 Project: Proposed Garage, 2808 Four Mile Road (County Road 117), Near Bottom of Bershenyi Dip, Garfield County, Colorado Weather: Cloudy, calm, light snow Temperature: 300 at 3:00 pm Earthwork Contractor: D.M. Neuman Equipment Used: vibratory smooth drum roller Description of Earthwork Interior under slab backfill placement was in progress using screened on -site Tested: material blended with imported pit -run gravel. A test was performed in the south garage bay first lift. The test results indicated acceptable compaction at 2.1% above optimum moisture content. Verbal Communication: Crew was informed of our test result. Placement and Compaction Procedure: Not observed by Kumar Associates Lift Thickness: Max. Rock Size: Moisture Conditioning: Compactor(s) Used: Number of Passes: Nuclear Gau a Moisture/Densit Test Results Location Field Dry Field Field Min. Test Depth or Moisture Comp. Proctor No. Elev. Density Content Comp. Re Lab No. Interior under slab backfill (pcf) q 1 15' E, 4' S of south bay NW corner, 4' below 125.9 9.8 96 95 502-19 1st lift subgrade Proctor Samnle Reference: Lab No. Method Description Max. Dry Dens. ( PC Opt. Moist. 502-19 ASTM D 698 Silty Clayey Gravel with Sand 131.3 7.7 IVIVIVJ HJ 11 rtCJVLI Vr VVrt VOJCrtVMIIVIVJVr TILL-EIVICIVI,VVCn VC RC LICUUIV I rIC UUIVIP( IUK IU l,t_1NI11VUC HYYL71Nu 11IC F:C!;UmmtNLICU COMPACTIVE EFFORT AND MOISTURE TO FILL DURIr4G THE TIMES WHEN OUR OBSERVER IS NOT OBSERVING OPERATIONS. THE NUCLEAR DENSOMETER METHOD OF TESTING WAS USED IN SUBSTANTIAL ACCORDANCE WITH ASTM D 6938. Distribution: D.M. Neuman Construction (infopdmneuman.com) D.M. Neuman Construction — Jason Hadland (ih(&dmneuman.com) D.M. Neuman Construction — Jason Neuman (imn(&dmneuman.com) TJ W/ Thomas J. Westhoff Steven L. Pawlak, P.E. Field Technician Reviewed By