GENERAL OBSERVATION REPORTReport Number: M7181304.1649Service Date: 09/01/21 * Report Contains Deviation(s) 20225 Cedar Valley Rd Ste 110Report Date: 09/07/21 Lynnwood, WA 98036-6365

425-742-9360Client Project

Pine Street Group LLC WA State Convention Center ExpansionAttn: Webb Miller 1600 9th Ave1500 4th Ave Ste 600 Seattle, WA Seattle, WA 98101-1670 Project Number: M7181304

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 6

Permit No.: 6501134-PH

GENERAL INFORMATION

General Inspection

Post-Installed AnchorsPerformed an unscheduled epoxy inspection for #4 90-degree hook dowels at 10” on center for equipment pads/topping slabs on Level 4 south at grid lines B.8-C/4-4.2 and A.7-A.8/5-5.3. The 2” embedment requirement was met per detail 12/S515 and 16/S515, and cleanliness was verified. Epoxy inspection will follow.

Performed an unscheduled epoxy inspection of #4 90-degree hook dowels for a built-up slab on Level 5 at grid lines G.9-H.5/4. The dowels were installed with an embedment depth of 2” or greater. All holes were drilled and cleaned, and reinforcement was installed, per manufacturer’s recommendations. The epoxy used was DeWalt Pure 110+ (lot no. 231, expiration 09/2022).

Concrete PlacementA scheduled concrete placement observation started at 8:00 a.m. today for a slab-on-metal-deck on Level 1 in Sector C at grid lines A.2-A.7/9.1-10.9, and approximately the first 20” of height of the 2nd lift of the waler beam at grid lines A-A.3/9. The reinforcing steel and final clearances were approved previously. The concrete was placed via boom pump and mechanically consolidated into the elements. A total of (20) cubic yards of Stoneway mix 458374c was placed. One set of (5) 4x8” lab-cure cylinders was cast to represent this placement with an expected compressive strength (f’c) of 4000 psi at (28) days.

A scheduled concrete placement observation started at 9:00 a.m. today for the slabs-on-metal deck, elevator pit walls and curb walls on Level 1 at grid lines C-E/11.4-13, the 2nd lift of the waler beam at grid lines A-A.7/11, remaining portion of 2nd lift of waler beam at grid lines A-A.7/9, and the first lift of the Level B2 floor boxes from grid lines E.5-H/8-12.3. The reinforcing steel and final clearances were approved previously. The concrete was placed via boom pump and consolidated into the elements. A total of (60) cubic yards of Stoneway mix 671374c was placed. One set of (5) 4x8” lab-cure cylinders was cast to represent this placement with an expected compressive strength (f’c) of 6000 psi at (28) days.

SetNo.

MixNo.

S.O. BatchPlant

PSIReq.

Slump/Spread

Temp. Yards at Sample

Yards Total

Element Type

1 458374c 1649F 011 4000 24” 73°F 10 20 Level 1 slab-on-metal deck

SetNo.

MixNo.

S.O. BatchPlant

PSIReq.

Slump/Spread

Temp. Yards at Sample

Yards Total

Element Type

1 671374c 1649G 011 6000 24” 80°F 40 60 Level 1 slab-on-metal deck and beams

GENERAL OBSERVATION REPORTReport Number: M7181304.1649Service Date: 09/01/21 * Report Contains Deviation(s) 20225 Cedar Valley Rd Ste 110Report Date: 09/07/21 Lynnwood, WA 98036-6365

425-742-9360Client Project

Pine Street Group LLC WA State Convention Center ExpansionAttn: Webb Miller 1600 9th Ave1500 4th Ave Ste 600 Seattle, WA Seattle, WA 98101-1670 Project Number: M7181304

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 2 of 6

Reinforcing SteelPerformed a scheduled reinforcing steel inspection of the radiant/built-up slab on Level 5 at grid lines H-S.2/2.9-4.3 and K.2-L.5/2.1-3 for bar size, grade, spacing and splice in accordance with schedule S002, S256 and 16/S515. The reinforcing steel is per plan, and final clearances will be verified prior to placement.

Performed a scheduled reinforcing steel inspection of the floor boxes on Level B2 at grid lines E.5-H/8-12.3 for bar size, grade, spacing and splice in accordance with schedule S002, S2B2C and S508. The reinforcing steel was per plan, final clearances were verified, and concrete was placed immediately after.

Continued reinforcing steel inspection of the second lift of the waler beams on Level 1 at grid lines A-A.7/9 and A-A.7/11 for bar size, grade, spacing and splice in accordance with schedule S201C, S239, S627 and RFI 4344.1. Items needed prior to placement:

1. Install terminator ends on E-W #8 bars on 9-line beam, as shown in detail 8/S627. Completed.2. Install #4 Z-bars at 12” on center along 9-line beam, install continuous #4 E-W bars perpendicular to Z-bars, and #4

right angle bars framing from Z-bar onto top of beam, per detail 14/S627 and 15/S627. Completed.3. Install (3) #4 bars underneath U-bars at west end of 9-line beam, per detail 20/S627. Completed.4. Install reinforcement in RFI 4344.1. Completed.5. Final clearances. Completed.

Continued reinforcing steel inspection of the slab-on-metal decks, elevator pit walls and curb walls on Level 1 at grid lines C-E/11.4-13, A.2-A.7/9-10.1, A.2-A.3/10-10.5 and A.2-A.7/10.5-11 for bar size, grade, spacing and splice in accordance with schedule S002, S201C, S239, S539, S540, S623 and S627. Items needed prior to placement:

1. Finish #4 90-degree bars at top of elevator pit wall at 12” on center, install #4 “candy canes” along east and south faces of pit wall perimeter (framing in from deck) at grid lines C-C.4/11.6-12. Completed.

2. Install (2) continuous #5 bars underneath U-bars, and #4 right angle bars at 18” on center on top of 13-line wall, per detail 2/S623 and 3/S623. Completed.

3. Install additional continuous #4 bar in step at grid lines C.5/11.6-12 per detail 6/S627. Completed.4. Install E-W top #6 bars at grid lines C.4-C.5/11.6-12. Completed.5. Cleanliness of all decks. Completed.6. Final clearances. Completed.

Continued reinforcing steel inspection of the Level 7 slab-on-metal-deck at grid lines C-E.3/3.7-4. The deck was inspected for bar size, grade, spacing and splice in accordance with schedule S002, S207E, S207, S539 and S540. The following items need to be verified prior to concrete placement:

GENERAL OBSERVATION REPORTReport Number: M7181304.1649Service Date: 09/01/21 * Report Contains Deviation(s) 20225 Cedar Valley Rd Ste 110Report Date: 09/07/21 Lynnwood, WA 98036-6365

425-742-9360Client Project

Pine Street Group LLC WA State Convention Center ExpansionAttn: Webb Miller 1600 9th Ave1500 4th Ave Ste 600 Seattle, WA Seattle, WA 98101-1670 Project Number: M7181304

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 3 of 6

1. “Chair” reinforcing mat off metal decking. Not completed.2. Final cleanliness check for debris on deck. Not completed.3. Final clearances. Not completed.

Continued reinforcing steel inspection for infills on Level B1 at grid lines A.5-A.7/8.5 for bar size, grade, spacing and splice in accordance with schedule S002, S2B1C, S2B1 and S540. Items needed prior to placement:

1. Clean flutes, install missing reinforcing bars and secure reinforcement. Not completed.2. Resolve structural steel issues on Level B1 with W27x84 beam at grid lines A.5-A.7/8.5. Not completed.3. Clarify if 90-degree hook replacement bars on Level B1 infill are needed. Not completed.4. Final clearances. Not completed.

Level 1, Slab-On-Metal Deck and Beam Concrete Placement ObservationA scheduled concrete placement started at 8:00 a.m. for the slabs-on-metal deck on Level 1 at grid lines C-E/11.4-13, A.2-A.7/9-10.1, A.2-A.3/10-10.5 and A.2-A.7/10.5-11, and the 2nd lift of the waler beams on Level 1 at grid lines A-A.7/9 and A-A.7/11. When the boom pump had started placing concrete along the 2nd lift of the waler beam at grid lines A-A.7/9, starting at A-line and working east, it was observed that the concrete mix being placed was not the 6000-psi that is called out in schedule S003 for mild reinforced beams. The concrete pour stopped, and approximately (1 to 2) cubic yards had been cast in the 2nd lift of the waler beam. The contractor did not remove the 4000-psi concrete out of the beam. The contractor pumped the remaining 4000-psi concrete in the queue in the bottom 12” to 18” in height of the curb wall along grid lines A.2/9-11 and the slabs-on-metal deck at grid lines A.2-A.7/9-10.1, A.2-A.3/10-10.5 and A.2-A.7/10.5-11. The contractor ordered and placed 6000-psi concrete to finish the 2nd lift of the waler beam at grid lines A-A.7/9 and the full 2nd lift of the waler beam at grid lines A-A.7/11. The 6000-psi concrete was placed in the remaining portion of the waler beam only (15 to 20) minutes after the 4000-psi concrete had been placed.

See attached plan views and photos for additional information.

Structural Masonry

Level 1 SCL Exhaust Vault RepairJ&S Masonry continued to replace the 8” block for the repair of the top 4” of the (2) Seattle City Light exhaust vaults at grid lines R.7 and S.7/17.2 in Zone B Level 1. Reinforcing steel has been inspected for placement and damage. Reinforcing steel is installed per approved plans and documents.

Level B2J&S Masonry continued laying 12” CMU block on Level B2 at grid lines G.0-G.3/13.6/13.6 from 19’4” to 24’0”. J&S Masonry mixed Mutual Materials Professional Grade Type S mortar on site per manufacturer’s recommendations, and re-tempered as needed on site and used in laying of 8x12x16” CMU blocks for masonry walls. Mortar joints were per plan and the fins were acceptable; the joints were struck off and within specified tolerances of MSJC ACI 530-13. Reinforcement was inspected for size, grade, lap splice and spacing per schedule S522 and S521.

GENERAL OBSERVATION REPORTReport Number: M7181304.1649Service Date: 09/01/21 * Report Contains Deviation(s) 20225 Cedar Valley Rd Ste 110Report Date: 09/07/21 Lynnwood, WA 98036-6365

425-742-9360Client Project

Pine Street Group LLC WA State Convention Center ExpansionAttn: Webb Miller 1600 9th Ave1500 4th Ave Ste 600 Seattle, WA Seattle, WA 98101-1670 Project Number: M7181304

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 4 of 6

Seismic ClipsObserved the installation of 1/2” Hilti KB-TZ wedge anchors horizontally installed in place of missing anchor bolts in masonry wall at Level B2 along grid lines S-U.8/12. Anchors were 6” in length achieving roughly (6) 3” effective embedment couple locations. RFI 3373, reviewed by MKA, instructs the installation of a third 1/2” Hilti KB-TZ with 3-1/4” of embedment. Verified what was installed met RFI and manufacturer’s specification.

• The embedment for (5) anchors ran into reinforcement. Clark is seeking approval for shallow embedment. Shallow embedment approved RFI 4275.

• (2) still need to be installed at grid lines U.5-U.8/12. Complete.

Observed the following conditions concerning seismic clips for top of masonry walls:

• Level B1 along grid lines U-U.9/14, missing seismic clips – (3) appear to meet specifications and (3) have at least a 1/4” gap between wall and clip with what appears to be shallow embed (no access to see the anchor designation).

Gap and shallow embedment.

• Level B1 along grid lines U-U.9/13.5, grouted on 03/02/21, seismic clips still need to be installed. Completed.• Level B2 along grid lines U.2-U.8/13.6, wedge anchors not yet installed and should be per RFI 3373 with (3) 1/2” Hilti

KB-TZ. Verified anchors were installed per detail 11/S522, RFIs 4358 and 3373.• Level B2 along grid lines S-U.8/12, the third 1/2” Hilti KB-TZ needs to be installed per RFI 3373. See paragraph

above. Completed.

GENERAL OBSERVATION REPORTReport Number: M7181304.1649Service Date: 09/01/21 * Report Contains Deviation(s) 20225 Cedar Valley Rd Ste 110Report Date: 09/07/21 Lynnwood, WA 98036-6365

425-742-9360Client Project

Pine Street Group LLC WA State Convention Center ExpansionAttn: Webb Miller 1600 9th Ave1500 4th Ave Ste 600 Seattle, WA Seattle, WA 98101-1670 Project Number: M7181304

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 5 of 6

Phase 2

Reinforcing SteelContinued reinforcing steel inspection of the bottom and top mats and beams B22, B23, B24, B25, B26, B27 for the Level 1 mild steel slab at grid lines y19.3-V/z12-z15 and y21.5-y23.2/z7-z12. The element was inspected for bar size, grade, spacing and splice in accordance with schedule S002, S201B, S201BRB, S201BRT, S2B1, S516, S513, S512, 4/S622, 10/S620. The following items are needed prior to placement:

1. Complete installation of crane block-out reinforcement per detail 4/S622. Completed.2. Install “B40” reinforcement at grid lines y19.3-y19.7/z12. Completed.3. Install “X3” reinforcement at grid lines y21.5/z12. Completed.4. Remove debris and trash from deck. Not completed.5. Verify final clearances. Not completed.

Continued reinforcing steel inspection of the Level 1 suspended SCL duct bank from grid lines y21.5-y23/z11.9. The element was inspected for bar size, grade, spacing and splice in accordance with schedule S002, S201B, 6/S515, and RFI 4140. It was brought to the attention of Lewis Quality Control that the stirrups do not extend above the bottom mat reinforcement of the elevated slab per detail 6/S515. No. 5 “candy cane” bars at 12” on center were spliced to the vertical portion of the stirrup to extend into the mid-slab region. This work is pending an RFI response from the structural engineer.

Continued reinforcing steel inspection of the west face of the core in Sector B on Level 1 at grid lines y19.3/z7.0-z12.0 for bar size, grade, spacing and splice in accordance with schedule S002, S201B, S306 and S315. Items needed prior to placement:

1. Correct horizontal bar ends at grid lines y19.3/z7.0 and y19.3/z12.0 to ensure clearances. Completed.2. Install (12) missing interior V7 verticals along grid lines y19.3/z10.0-z12.0 per detail 15/S315. Completed.3. Install H19 bars (3 layers of #5 at 6”) along grid lines y19.3-y19.7/z7.0 per detail 16/S306. Completed.4. Install H29 bars (3 layers of #6 at 6”) along grid lines y19.3-y19.7/z12.0 per detail 11/S306. Completed.5. Correct low #7 horizontal splices to 59”, per schedule S002. Completed.6. Clear debris from inside core wall. Completed.7. Final clearances. Not completed.

Continued reinforcing steel inspection of the B22 beam on Level 1 at grid lines y23-V/z12.0 for bar size, grade, spacing and splice in accordance with schedule S002, S201B, S201BRB, S201BRT and S513. Items needed prior to placement:

1. Install (6) extra sets of stirrups the width of the B44 beam, per remarks for B22 in detail 8/S513. Completed.2. Install missing T98, T68 (both sides of beam) and finish B11 framing north, per schedule S201BRT. Completed.3. Splice east-west bottom #9 bars into top of V-line basement wall. Completed.

GENERAL OBSERVATION REPORTReport Number: M7181304.1649Service Date: 09/01/21 * Report Contains Deviation(s) 20225 Cedar Valley Rd Ste 110Report Date: 09/07/21 Lynnwood, WA 98036-6365

425-742-9360Client Project

Pine Street Group LLC WA State Convention Center ExpansionAttn: Webb Miller 1600 9th Ave1500 4th Ave Ste 600 Seattle, WA Seattle, WA 98101-1670 Project Number: M7181304

Services: Special Inspections / Materials Testing

Mayes/Terracon Rep.: Samuel Owens Reported To: Clark Construction Contractor: Clark Construction

Report Distribution:See attached distribution list.

Reviewed By: ____________________________________ Barry Tuttle

Project Field ManagerThe 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 6 of 6

4. Install north-south B44 primary reinforcement framing into B22 beam. Completed.5. Install (2) missing middle stirrups, on east side of beam. Completed.6. Final clearances. Not completed.

COMPLIANCE STATEMENT

Nonconforming Condition(s)In approximately the first 20” of height in the 2nd lift of the waler beam on Level 1 at grid lines A-A.7/9, (1 to 2) cubic yards of 4000-psi concrete was placed into the beam. The beam is 6000-psi per schedule S003 of the General Notes. Pending engineer review and compressive tests.

Additional Inspectors on site: Alex Burtis, Craig Williams

Photo Attachment Page

Photo Attachment Page 1 of 2

Project Name: WA State Convention Center Expansion Date: 09/01/21Project No.: M7181304

Excerpt from detail 8/S627 for waler beam at grid lines A-A.7/9. The yellow is the approximate height above the construction joint.

Yellow is where 4000-psi concrete was placed. Red is where 6000-psi concrete was placed.

Photo Attachment Page

Photo Attachment Page 2 of 2

Looking east of A.1-line along waler beam at grid lines A-A.7/9 of where the 4000-psi concrete was placed.

Looking east of A-line along waler beam at grid lines A-A.7/9 of where the 4000-psi concrete was placed.

Report Date:Service Date:Report Number:

Task:

M7181304.164909/01/2109/07/21

20225 Cedar Valley Rd Ste 110Lynnwood, WA 98036-6365425-742-9360

Distribution List

Distribution Page

(1) Pine Street Group LLC, Webb Miller

(1) American Bridge Company, Ady Velasco

(1) American Bridge Company, Dan Raynor

(1) American Bridge Company, Jason Loebig

(1) American Bridge Company, Jim Thornton

(1) American Bridge Company, Josh Ishibashi

(1) American Bridge Company, Keifer Mosmeier

(1) American Bridge Company, Madeleine Hughan

(1) American Bridge Company, Patrick Ryan

(1) American Bridge Company, Spencer Olson

(1) Clark Construction Group LLC, Amanda Tinoco

(1) Clark Construction Group LLC, Chris Donovan

(1) Clark Construction Group LLC, Colin Reed

(1) Clark Construction Group LLC, Fausto Figueroa

(1) Clark Construction Group LLC, Jeff Shewell

(1) Clark Construction Group LLC, Scott Howland

(1) Clark Construction Group LLC, Zach Travis

(1) Garco Construction Company, Casey Stulc

(1) Garco Construction Company, Dan Fishburn

(1) Garco Construction Company, Jesse Galaviz

(1) Garco Construction Company, Matthew Recknagel

(1) Garco Construction Company, Melissa Meidinger

(1) Garco Construction Company, Mike Herlihy

(1) Lewis Builds, Brian Dougherty

(1) Lewis Builds, Darin Dougherty

(1) Lewis Builds, Dave Hockaday

(1) LMN Architects, Ginnefer Sharpe

(1) LMN Architects, Greg Thompson

(1) Magnusson Klemencic Assoc, Stephen Pool

(1) Magnusson Klemencic Assoc, Thomas Meyer

(1) Mayes Testing Engineers, Inc, Dennis Sanborn

(1) Mayes Testing Engineers, Inc, Melinda Baxter

(1) Mayes Testing Engineers, Inc, Michael Mayes

(1) Pine Street Group LLC, Crystal Ng

(1) Pine Street Group LLC, Heather Glinn

(1) Pine Street Group LLC, Kenneth Wolfe

Report Date:Service Date:Report Number:

Task:

M7181304.164909/01/2109/07/21

20225 Cedar Valley Rd Ste 110Lynnwood, WA 98036-6365425-742-9360

Distribution List

Distribution Page

(1) Procoretech.com, Doc-Inbound Washington Convention Center

(1) Zemek Construction Company LLC, Dave Zemek

(1) Zemek Construction Company LLC, Preston Dunn

(1) Zemek Construction Company LLC, Roger Hicks