7100 HARDESON RD 2024-10-24 - Laserfiche WebLink

EARTHWORK OBSERVATION REPORT MAYES I lrerracon Report Number: M7211390.0056 Service Date: 04/26/22 20225 Cedar Valley Rd Ste 110 Report Date: 04/28/22 Lynnwood,WA 98036-6365 425-742-9360 Client Project Vanir Construction Management Inc. Merrill Creek Operations Base Main &Ops Bldg Exp Phase 3 Attn: John Wright 7000 Hardeson Road 707 S. Grady Way, Suite 120 use middle driveway off 7100 Hardeson Road Renton,WA 98057 Everett,WA Project Number: M7211390 Permit No.: B2101-003 GENERAL INFORMATION Observed native subgrade conditions for various areas at the Merrill Creek Community Transit Maintenance and Operations Base expansion located at 7100 Hardeson Road, Everett, WA. Construction documents referenced for today's inspection include the Conformed plan set dated 06/18/21. Earthwork was performed by Fabor Construction. Native material exposed at the north lot, north of existing building, was brown silty sand with gravel and areas of grey soft silty sand with clay. John with Vanir Construction Management Services identified (4) locations that appeared to be pumping and yielding. There was one area approximately 80' by 15', excavated to 2' depth, along the southeast corner of the north lot. There were (3) areas in the northwest corner, one approximately 40' by 40', excavated to 2' depth; one approximately 10' by 20', excavated to 2' depth; and one approximately 15' by 15', excavated to 18" depth. Probing of the areas with a 1/2" diameter T-handled probe rod resulted in severe penetration prior to excavation (see 1 st photo). Contractor removed unsatisfactory material and replaced it with filter fabric, quarry spalls, and crushed rock (see 2nd photo). Observed proof-rolling of the north side of the north lot, from approximately the north landscape strip to a 30' width to the south. A dumptruck with a reported (15) tons of material was driven over the area in several passes and the crushed surfacing base course was observed for pumping or yielding. No excessive movement was observed. It is Mayes/Terracon's opinion that the areas described above are firm and unyielding, sufficient to support desired loads. Results of today's observations were reported to John with Vanir Construction Management Services. COMPLIANCE STATEMENT Based on our observations and testing, the above noted items appear to be in general accordance with the project documents. Services: Special Inspections/Materials Testing Mayes/Terracon Rep.: Carl Harrington Reported To: Vanir Construction Mgmt Services Contractor: Vanir Construction Mgmt Services Report Distribution: (1)Vanir Construction Management (1)City of Everett WA,Kurt Keck Inc.,John Wright (1)Community Transit,Larry (1)Jimale Technical Services LLC, Reviewed By: Daubenmire Tom Donnelly - (1)Mayes Testing Engineers,Inc, (1)Mayes Testing Engineers,Inc, Barry Tuttle Donna Pollard Todd Wirtz (1)Vanir Construction Management (1)Vanir Construction Management Project Field Manager Inc.,Dan McNay Inc.,John Turk The tests were performed in general accordance with applicable ASTM,AASHTO,or DOT test methods. This report is exclusively for the use of the client indicated above and shall not be reproduced except in full without the written consent of our company. Test results transmitted herein are only applicable to the actual samples tested at the location(s)referenced and are not necessarily indicative of the properties of other apparently similar or identical materials. CT0001,10-16-13,Rev.10 Page 1 of 1