Loading...
SOILS SPECIAL INSPECITONSPanGE@) I N C O R P O R A T i Y Geotechnical and Earthquake Engineering Consultants 3213 Eastlake Ave E Ste B Project No. Page No. Seattle, WA 98102 16-217.300 1 of 1 Tel: (206) 262-0370 Fax: (206) 262-0374 Report No. Date / Day of Week 01 February 6 & 9, 2017 / Tues. & Fri. Project Name Location or Address Westgate Village 10032 Edmonds Way, Edmonds, WA Owner Permit No. Weather Westgate Village LLC BLD2016-1538 (Building) Cloudy, — 40s BLD2018-0034(Shoring) Architect: Studio Meng Strazzara General Contractor: W.G. Clark PanGEO Field Rep. Structural: Quantum Shoring Contractor: Versatile Drilling William Chao Tanner Townsend Pre -Construction Meeting — Building: As requested by the contractor, PanGEO visited the site on February 5, 2017 to attend the pre -construction meeting with the City of Edmonds Building and Engineering and Fire department. Attendees also included owner, general contractor and subcontractors, representatives from project design team and material testing firm. PanGEO's field reports will be emailed to the City and to member of the project team. As discussed in the meeting, the geotechnical special inspection will include: • Footing/slab subgrade • Infiltration facility and permeable pavement subgrade • Monitoring of Excavation • Subsurface drainage installation • Fill placement and compaction PanGEO will be on site to observe the above construction. The contractor will need to notify PanGEO of the construction schedule. Pre -Construction Meeting — Shoring: PanGEO visited the site on February 9, 2017 to attend the shoring pre -construction meeting with the City of Edmonds Building and Engineering and Fire department. Attendees also included owner, general contractor, shoring subcontractor (Versatile), representatives from project design team and material testing firm. PanGEO's field reports will be emailed to the City and to member of the project team. As discussed in the meeting, the geotechnical special inspection for shoring installation will include: • Soldier pile installation • Tieback installation • Tieback stressing/testing • Lagging installation • Performance monitoring PanGEO will be on site to observe the above construction. The contractor will need to notify PanGEO of the construction schedule. 16-217 Westgate Village FR 01 2018-2-6 9 FIELD REPORT Signed: a1z-- 16-217 Westgate Village FRO 12018-2-6_9 Page 2 of 2 PanGEO, Inc. Permit# BLD20161538 (Building) Permit# BLD20180034 (Shoring) PanGE@) I N C O R P O R A T i Y Geotechnical and Earthquake Engineering Consultants 3213 Eastlake Ave E Ste B Project No. Page No. Seattle, WA 98102 16-217.300 1 of 3 Tel: (206) 262-0370 Fax: (206) 262-0374 Report No. Date / Day of Week 02 February 14 — 16, 2018 Wednesday, Thursday, & Friday Project Name Location or Address Westgate Village 10032 Edmonds Way, Edmonds, WA Owner Permit No. Weather Westgate Village LLC BLD2016-1538 (Building) Cloudy, — 40s BLD2018-0034(Shoring) Architect: Studio Meng Strazzara General Contractor: W.G. Clark PanGEO Field Rep. Structural: Quantum Shoring Contractor: Versatile Drilling Tanner Townsend William Chao PanGEO representatives were on -site on February 14 through 16, 2018 to observe soldier pile wall installation and stability of the site excavation. During our site visits, we observed that the shoring contractor (Versatile Drilling) installed a total of 18 soldier piles (P 1 to P 18). Figure 1 attached in the end of the report shows the pile locations. The installed pile lengths and elevations are shown in Table 1 below. The following summarizes the geotechnical aspects of the construction and our observations while onsite. Soldier Pile Installation In general, the soldier piles were installed as follows: - A LoDril tracked drill rig equipped with an open -flight auger was used to drill the holes without temporary casing to about 6 inches below the design pile tip elevations. - The steel beams were lowered into the drill hole via a mobile crane and the beams were set to the design pile elevation with a tape measure and level (see Photo 1 below). - The drill holes were backfilled with lean mix concrete. The pile length and elevations are shown in Table 1 at the end of this report. The soils encountered during drilling generally consist of 2 to 4 feet of loose sand/silt (fill) over dense, light brown, silty sand with gravel, which we F interpret to be native Advance Outwash deposits. No groundwater seepage was found in the holes. Based on our observations during our site visits, it ' is our opinion that the soldier piles were installed in general accordance with the approved shoring plans, and the encountered soils were generally consistent with the anticipated conditions and design assumptions. - Photo 1: Drilling and placement of soldier piles, looking NW 16-217 Westgate Village FR 02 2018-2-14_15_16 FIELD REPORT Table 1. Soldier Pile Installation Summary Soldier Steel Steel Design Pile Actual Pile Tip Elevation / Date 16-217 Westgate Village FR 02 2018-2-14_15_16 Page 2 of 3 PanGEO, Inc. Permit# BLD20161538 (Building) Permit# BLD20180034 (Shoring) FIELD REPORT points will also be installed on the existing concrete wall on 2/23 (prior to the excavation). The shoring plans call out the survey frequency during excavation to be twice a week. Observe and Monitor Excavation: A bench area was created to allow the soldier pile installation between P 1 and P 16. The slope behind the wall was graded to 1 H:1 V to 2H:1 V located to the south of the soldier pile wall (see Photo 2). The slope appeared stable without signs of soil sloughing. Photo 2: Bench and slope cut were created to allow installation of soldier piles (looking SE) Signed: �— Enclosed: Figure 1 — Soldier Pile Wall Layout (modified from Sheet SH2.0) FlArea Excavated to Remove Obstruction 0 16-217 Westgate Village FR 02 2018-2-14_15_16 Page 3 of 3 PanGEO, Inc. Permit# BLD20161538 (Building) Permit# BLD20180034 (Shoring) PanGE@) I N C O R P O R A T i Y Geotechnical and Earthquake Engineering Consultants 3213 Eastlake Ave E Ste B Project No. Page No. Seattle, WA 98102 16-217.300 1 of 3 Tel: (206) 262-0370 Fax: (206) 262-0374 Report No. Date / Day of Week 07 April 20 & 24, 2018 / Fri. & Tues. Project Name Location or Address Westgate Village 10032 Edmonds Way, Edmonds, WA Owner Permit No. Weather Westgate Village LLC BLD2016-1538 (Building) Cloudy, — 50s (4/20/18) BLD2018-0034(Shoring) Clear, — 60s 4/24/18 Architect: Studio Meng Strazzara General Contractor: W.G. Clark PanGEO Field Rep. Structural: Quantum Earthwork Contractor: Prime Core William Chao PanGEO representatives were on site on April 20 and 24, 2018 to observe the slab subgrade, subsurface drainage installation, wall backfill and compaction, site excavation, and shoring wall performance. The following summarized our observations. Slab on Grade Subgrade Upon arriving on site on 4/20, we observed that the contractor has placed 4" clean crushed rock (capillary break) on the soil subgrade at the basement level. We probed the soil subgrade through the clear rock using a 1/2 diameter steel T-probe and found it dense and unyielding. The earthwork contractor noted they have used a 3-ton vibratory roller to compact both the subgrade and capillary break. Based on our observations and probing, it is our opinion that subgrade observed was in general accordance with project plans/specifications and our recommendations, and is adequate to support the slab on grade. Subsurface Drainage Installation: During our site visits on 4/20, we observed that 4-inch diameter, perforated PVC pipes were installed behind - the basement wall (see locations in Figure 1). The clean crushed rock was installed around the footing drain pipes and filter fabric was placed on the top of r� the drain rock prior to backfill. Based on our field observations, it is our opinion that installation of the subsurface drainage was in general Ell YF accordance with the project plans/specifications and our recommendations. Photo 1: Footing drain pipes and clean crushed rock installed along perimeter footings (prior to fabric Wall Backfill and Compaction installation and backfill) While on site on 4/24, we observed that the backfill was being placed behind the basement wall. The 16-217 Westgate Village FR 07 2018-4-20_24 FIELD REPORT backfill generally consist of on -site excavated outwash sand (medium to coarse sand with trace to slight amount of silt), which is relatively free drainage and suitable as wall backfill. The backfill was placed in lifts of about 2 feet and compacted using a 3-ton vibratory roller with multiple passes. PanGEO probed the compacted backfill and found it dense and unyielding. Based on our field observations, it is our opinion that installation of the subsurface drainage was in general accordance with the project plans/specifications and our recommendations. Excavation and Shoring Wall Performance The excavation at the site generally consisted of 1 H:1 V slope cut (-3/4H:1 V in localized areas where dense soils are present). The excavation appeared stable without signs of obvious sloughing. Based on the most recent survey data through 4/20/18, the soldier pile shoring wall has moved less than %2 inch since 2/16, indicating the soldier pile walls have performed adequately 16-217 Westgate Village FR 07 2018-4-20_24 Page 2 of 3 PanGEO, Inc. Permit# BLD20161538 (Building) Permit# BLD20180034 (Shoring) FIELD REPORT Ci C3' \ v39oo r [ 6neacn rmnresA 61Gn psr Nj.nN& Q�Sn@it iTP. AT yy FppTIlA55�-1� I cunnc cr sur PA#XNi IfVUE Signed: 2 r �- 16-217 Westgate Village FR 07 2018-4-20_24 Permit# BLD20161538 (Building) Permit# BLD20180034 (Shoring) Fire 1 Site Plan Page 3 of 3 6• caxc. a.�a AT WA EVA roy/N1'R%• YG A N Mm \\ 51µ Vl iHt ARIA ecnrc++ a PanGEO, Inc. PanGE@) I N C O R P O R A T i Y Geotechnical and Earthquake Engineering Consultants 3213 Eastlake Ave E Ste B Project No. Page No. Seattle, WA 98102 16-217.300 1 of 2 Tel: (206) 262-0370 Fax: (206) 262-0374 Report No. Date / Day of Week 08 April 26, 2018 / Thursday Project Name Location or Address Westgate Village 10032 Edmonds Way, Edmonds, WA Owner Permit No. Weather Westgate Village LLC BLD2016-1538 (Building) Clear, — 70s BLD2018-0034(Shoring) Architect: Studio Meng Strazzara General Contractor: W.G. Clark PanGEO Field Rep. Structural: Quantum Earthwork Contractor: Prime Core William Chao PanGEO representative was on site on April 26, 2018 to observe footing subgrade, site excavation, and shoring wall performance. The following summarized our observations. Foundation Subgrade Upon arriving on site, we observed that the contractor has excavated a column footing (Level 1) at the location indicated below. Imo.- v � __•�. ___ V 7-1 .LvY d ill IIAYL NC -.w A rowc..xawace tA I z Doting subgrade � " bserved on 412&18 ca Norsk We probed the subgrade using a 1/2 diameter steel T-probe to evaluate the bearing soil conditions. The soils at the design footing elevation generally consist of native, dense advance outwash sand with trace of gravel and fines. Based on our observations, it is our opinion that footing excavation was conducted in general accordance with the project plans/specifications and our recommendations, and the observed bearing soils are adequate to support the design bearing pressure of 3 ksf. 16-217 Westgate Village FR 08 2018-4-26 FIELD REPORT Additional Notes: We observed that footings at several locations have been poured where the subgrade has not been observed by PanGEO (see locations below). NN \ P. \ AT RAW W I4 4 iT OL. eAc-rrr[Nt-vernu 5ubgrade Observed previously Footings that have been poured where subgrade was not observed by PanGEO Test pit locations - 5ubgrade near the base of the footings exposed for PanGEO to observe on 4126 Test pit locations - Subgrade near the base of the footings that will be exposed for PanGEO to observe in the near future On April 26, the contractor excavated test pits next to these footings for PanGEO to observe the subgrade conditions. The test pit locations are shown above. Based on our observations, the exposed subgrade consists of dense, native outwash sand. In our opinion, the observed bearing soils are adequate to support the design bearing pressure of 3 ksf. Excavation and Shoring Wall Performance The excavation at the site generally consisted of 1 R I V slope cut (-3/4H:1 V in localized areas where dense soils are present). The excavation appeared stable without signs of obvious sloughing. Based on the most recent survey data through April 20, 2018, the soldier pile shoring wall has moved less than'/2 inch, indicating the soldier pile walls have performed adequately 1� Signed: z — 16-217 Westgate Village FR 08 2018-4-26 Page 2 of 2 PanGEO, Inc. Permit# BLD20161538 (Building) Permit# BLD20180034 (Shoring) PanGE@) I N C O R P O R A T i Y Geotechnical and Earthquake Engineering Consultants 3213 Eastlake Ave E Ste B Project No. Page No. Seattle, WA 98102 16-217.300 1 of 2 Tel: (206) 262-0370 Fax: (206) 262-0374 Report No. Date / Day of Week 09 April 30 & May 1, 2018 / Mon. & Tues. Project Name Location or Address Westgate Village 10032 Edmonds Way, Edmonds, WA Owner Permit No. Weather Westgate Village LLC BLD2016-1538 (Building) Clear, — 60s BLD2018-0034(Shoring) Architect: Studio Meng Strazzara General Contractor: W.G. Clark PanGEO Field Rep. Structural: Quantum Earthwork Contractor: Prime Core William Chao (4/30, 511) Romulos Ra dos 4/30 PanGEO representatives were on site on April 30 and May 1, 2018 to observe footing subgrade, site excavation, and shoring wall performance. The following summarized our observations. Foundation Subgrade Upon arriving on site, we observed that the contractor has excavated footings and thickened slab (Level 1) at the location indicated below. - - - i 4. .-.. 14M, 43 w ) - •4 �:�-F � I r :r ' y asp cac. eI� 4- � era r-7-------- ---p' MbPPERu� fr cae.n� eR�ee t=J �..cw cwa f4 •M�lra rrmu�xr.N � , __� a... it oa r�x,.e�,w +rue wav�wn-� m rm. uox � rn,es e ro c«rcvc .MP�waaeroouw rsnw.fc xraa. •n �aE ro. Suhgrade Observed 9.01 previously {rn Subgrade Observed , 4130 & 511 w vwu w m. ---- --------------- -------------------------- 141 Footing subgrade over-' Footing subgrade over wu �rerearterrts excavated about 2 feet Mraexcavated about 1 feat .(approx. location) (apprnx. location) F000ngs and thickeneci s an vised based on SSK-09 d LEVEL 1 FRAMING 1 `� MILD REINFORCING PLAN C6 C7 C8 C9 SIC-70 1 r r Nu.era I FRAMIN6/MILD REINFORCING PLAN (.�r S2 V A We probed the subgrade using a 1/2 diameter steel T-probe to evaluate the bearing soil conditions. Most of the soils at the design footing elevation consist of native, dense advance outwash sand with trace of gravel and fines. About 1 to 2 feet of loose soils were found at the footing subgrade approximately along the west portion of the perimeter footings. The earthwork contractor over -excavated the loose soils and replaced 16-217 Westgate Village FR 09 2018-4-30_5-1 FIELD REPORT with CDF (I 1/2 sacks). Based on our observations, it is our opinion that subgrade preparation was conducted in general accordance with the project plans/specifications and our recommendations, and the observed bearing soils are adequate to support the design bearing pressure of 3 ksf. Excavation and Shoring Wall Performance The excavation at the site generally consisted of 1 H:1 V slope cut (-3/4H:1 V in localized areas where dense soils are present). The excavation appeared stable without signs of obvious sloughing. Based on the most recent survey data through April 20, 2018, the soldier pile shoring wall has moved less than'/2 inch since 2/16, indicating the soldier pile walls have performed adequately Signed: C �- 16-217 Westgate Village FR 09 2018-4-30_5-1 Page 2 of 2 PanGEO, Inc. Permit# BLD20161538 (Building) Permit# BLD20180034 (Shoring) PanGE@) [ N C O R P O R A T i Y Geotechnical and Earthquake Engineering Consultants 3213 Eastlake Ave E Ste B Project No. Page No. Seattle, WA 98102 16-217.300 1 of 2 Tel: (206) 262-0370 Fax: (206) 262-0374 Report No. Date / Day of Week 10 May 2, 3, & 4, 2018 / Wednesday, Thursday, and Friday Project Name Location or Address Westgate Village 10032 Edmonds Way, Edmonds, WA Owner Permit No. Weather Westgate Village LLC BLD2016-1538 (Building) Cloudy, — 50 to 60s BLD2018-0034(Shoring) Architect: Studio Meng Strazzara General Contractor: W.G. Clark PanGEO Field Rep. Structural: Quantum Earthwork Contractor: Prime Core William Chao (5/2) Tanner Townsend 5/3 & 5/4 PanGEO representatives were on site on May 2, 3, and 4, 2018 to observe footing subgrade, site excavation, and shoring wall performance. The following summarized our observations. Foundation Subgrade Upon arriving on site, we observed that the contractor has excavated footings (Level 1) at the locations indicated below. r r �:.N. mres 'r ow _ a• cac. ��' 4 f• 9 sr� 'i y M11.L - 4 ' •-� - n =`-•�� rn 9LM FOatirg over- 'x 'b" d • sir excavation to Le end about 2 to 3 feet § L1 Level Footing $upgrade Observed - - - — �+ —',�,i I.LIs -� wry. � 512 - 5f4 n•o� � � FAT !1 level Footing 5ubgrade observed previously AMA Pn ny¢ n IAA 1En A%M iuo EfrY �"�Y/ �s.rw. •caw:.waaaesu r�rH. u•o4- 16Z TT YLM0a2R55 is w rora.*w+n.w swT mc+ue Footing Ever- wsueorna: <b North .�r :w u x� • ree r,+. excavation ro auaowK— $.� WFF about 7 fW TORN eumanu veRrr CORR[CrgRR - � MML�IrrG PlRIMI MO RD � i � COHSiR�CrWM CDORUMATgII I M!J}A is _ J161 M2 TP. 1 1 AGiRpVµ 6Y; IO Rr riT-'� W' VdC. SgEC Previous footing subgrade'"'L x�T6W�g subgrade + I over -excavated about 2 feet ne+oaveoexsavated about 1 LEVEL 7 FRAM _(approx, locateon; Foot f�pprox. location),,. Footings and thi¢caned scab revisedhased on SSK-0MILD REINFOR ssK. 9an 6 PLAN c� cR We probed the subgrade using a 1/2 diameter steel T-probe to evaluate the bearing soil conditions. Most of the soils at the design footing elevation consist of native, dense advance outwash sand with trace of gravel and fines. About 1 to 3 feet of loose soils were found at the footing subgrade in localized area (see locations in the site plan). The concrete contractor removed the loose soils and informed me that they would pour 16-217 Westgate Village FR 10 2018-5-2_3_4 FIELD REPORT concrete or CDF (1'/2 sack) directly on native soil subgrade. Based on our observations, it is our opinion that subgrade preparation was conducted in general accordance with the project plans/specifications and our recommendations, and the observed bearing soils are adequate to support the design bearing pressure of 3 ksf. Excavation and Shoring Wall Performance The excavation at the site generally consisted of 1 H:1 V slope cut (-3/4H:1 V in localized areas where dense soils are present). The excavation appeared stable without signs of obvious sloughing. Based on the most recent survey data through May 3, 2018, the soldier pile shoring wall has moved less than'/2 inch since 2/16, indicating the soldier pile walls have performed adequately Signed: C �- 16-217 Westgate Village FR 10 2018-5-2_3_4 Page 2 of 2 PanGEO, Inc. Permit# BLD20161538 (Building) Permit# BLD20180034 (Shoring) PanGE@) I N C O R P O R A T E Y Geotechnical and Earthquake Engineering Consultants 3213 Eastlake Ave E Ste B Project No. Page No. Seattle, WA 98102 16-217.300 1 of 2 Tel: (206) 262-0370 Fax: (206) 262-0374 Report No. Date / Day of Week 11 May 8, 9, & 10, 2018 / Wednesday, Thursday, and Friday Project Name Location or Address Westgate Village 10032 Edmonds Way, Edmonds, WA Owner Permit No. Weather Westgate Village LLC BLD2016-1538 (Building) Clear, — 70 BLD2018-0034(Shoring) Architect: Studio Meng Strazzara General Contractor: W.G. Clark PanGEO Field Rep. Structural: Quantum Earthwork Contractor: Prime Core William Chao PanGEO representatives were on site on May 8, 9, and 10, 2018 to observe footing subgrade, site excavation, and shoring wall performance. The following summarized our observations. Foundation Subiyade Upon arriving on site, we observed that the contractor has excavated footings (Level 1) at the locations indicated below. Edmonds ru •ro.. ra c,v Footing vier- ' J roe vvov \ CC EuwHociO�ww°Ss ao xCeVelgn to .` .mY+o. �• / 6ou! 3 loot i w0� Basemen+ I^ri3a � ias •'°'�°'�� .• N, �, � _ �. ',\ R.? cuc e'er . wcl rf Legend ❑ -- ni L'E Level Footing 7es[pitezposeefor Ar�.��°P*'' _ Subgrade Observed GEO to observe woc� v me^t level rpcting''-"�`� 4w5• n� ra �i 518 - 5i1a +�• �� eon srs '1 U Lt Levef Footing ° �' - -�•e y Subgrade Observed previously .w sa..Baaernen' b ,r }C ea ..-..;cr.nw 16369: �sweoroR wTE North .,P's� en. rar. x.n raralior i.. _m ad a 8 a6oul t fm nl AHRU — �� Previous foaling wt)grade r6odng s�bgrade AREr r:�WrE o ,e .ca-ted about 2 reel wC rranerxx�vated about + {appr0. location} rcp[(approw Wwh�Y \2..;pcGri^ na d-ihiµgr�ed way LEVEL t FRAMING C6 O revise aeed an SSK-09 and •, � MILD RPLAN RC NC PLAN We probed the subgrade using a 1/2 diameter steel T-probe to evaluate the bearing soil conditions. Most of the soils at the design footing elevation consist of native, dense advance outwash sand with trace of gravel and fines. Up to about 1/2 to 1 foot of loose soils were found at the footing subgrade in localized area (see locations in the site plan). The concrete contractor removed the loose soils and informed me that they would 16-217 Westgate Village FR 11 2018-5-8_9_10 FIELD REPORT pour concrete or CDF (1.5 sack) directly on native soil subgrade. Based on our observations, it is our opinion that subgrade preparation was conducted in general accordance with the project plans/specifications and our recommendations, and the observed bearing soils are adequate to support the design bearing pressure of 3 ksf. Additional Notes: On May 8, the contractor excavated one test pit next to the basement level footings that have been previously poured (see location in the site plan on Page 1). PanGEO did not observe the footing subgrade at this location prior to the footing pour; therefore, the test pit was excavated for PanGEO to observe the subgrade conditions near the base of the footings. Based on our observations, the exposed subgrade consists of dense, native outwash sand. In our opinion, the observed soils and adjacent foundation bearing soils are adequate to support the design bearing pressure of 3 ksf. The originally planned second test pit located to the southwest was deleted because the adjacent level 1 footing subgrade elevation is as low as the basement footing subgrade elevation. Based on our observation of the adjacent level 1 footing excavation, the foundation soils appeared dense and suitable to support the design bearing pressure of 3 ksf. Excavation and Shoring Wall Performance The excavation at the site generally consisted of 1H:1V slope cut and excavation appeared stable without signs of obvious sloughing. Based on the most recent survey data through May 11, 2018, the soldier pile shoring wall has moved less than'/2 inch since 2/16, indicating the soldier pile walls have performed adequately Signed: �- 16-217 Westgate Village FR 11 2018-5-8_9_10 Page 2 of 2 PanGEO, Inc. Permit# BLD20161538 (Building) Permit# BLD20180034 (Shoring) PanGE@) I N C O R P O R A T i Y Geotechnical and Earthquake Engineering Consultants 3213 Eastlake Ave E Ste B Project No. Page No. Seattle, WA 98102 16-217.300 1 of 2 Tel: (206) 262-0370 Fax: (206) 262-0374 Report No. Date / Day of Week 12 May 23 & 24, 2018 / Wednesday & Thursday Project Name Location or Address Westgate Village 10032 Edmonds Way, Edmonds, WA Owner Permit No. Weather Westgate Village LLC BLD2016-1538 (Building) Clear, — 70 BLD2018-0034(Shoring) Architect: Studio Meng Strazzara General Contractor: W.G. Clark PanGEO Field Rep. Structural: Quantum Earthwork Contractor: Prime Core Alex Hess Romulos P. Ragudos, Jr. PanGEO representatives were on site on May 23 and 24, 2018 to observe the subgrade below the proposed parking lot in the west portion of the site, site excavation, and shoring wall performance. The following summarized our observations. Slab Subivade PanGEO observed that the contractor prepared the subgrade for the surface parking lot located to the west of the building (see location below). 4s - wv _ - ® Building —. 'Footprint _ `.... ® Parking Lot _ � - _--- _' . ubgrade i:.; .rc W: + . - Most of the observed subgrade consists of outwash sand with trace amounts of gravel and fines. In the areas behind the basement walls, we observed that the contractor placed backfill material (excavated outwash sand) in approximate 1-foot lifts behind the walls and compacted the material with a jumping jack and 3- 16-217 Westgate Village FR 12 2018-5-23_24 FIELD REPORT ton vibratory roller (see Plate 1 below). Water was added to aid in compacting the backfill material. We probed the soil subgrade using a 1/2 inch diameter steel T-probe and observed approximately 1 to 2- inches of penetration and found it to be dense and unyielding. In our opinion, the prepared subgrade was consistent with the approved plans and our recommendations. Plate 1: Backfill/compaction observed on 5/23-5/24 for subgrade of the surface parking lot Excavation and Shoring Wall Performance Based on the most recent survey data through June 1, 2018, the soldier pile shoring wall has moved less than 1/2 inch, indicating the soldier pile walls have performed adequately Signed: o r. Reviewed: 16-217 Westgate Village FR 12 2018-5-23_24 Page 2 of 2 PanGEO, Inc. Permit# BLD20161538 (Building) Permit# BLD20180034 (Shoring) PanGE@) I N C O R P O R A T i Y Geotechnical and Earthquake Engineering Consultants 3213 Eastlake Ave E Ste B Project No. Page No. Seattle, WA 98102 16-217.300 1 of 2 Tel: (206) 262-0370 Fax: (206) 262-0374 Report No. Date / Day of Week 13 June 6, 2018 /Wednesday Project Name Location or Address Westgate Village 10032 Edmonds Way, Edmonds, WA Owner Permit No. Weather Westgate Village LLC BLD2016-1538 (Building) Clear, — 60s BLD2018-0034(Shoring) Architect: Studio Meng Strazzara General Contractor: W.G. Clark PanGEO Field Rep. Structural: Quantum Earthwork Contractor: Prime Core William Chao A PanGEO representative was on site on June 6, 2018 to observe the footing backfill/slab subgrade, excavation, and shoring performance. The following summarized our observations. Footing Backfill/Slab Subgrade PanGEO observed that the contractor has backfilled the footings and prepared the slab subgrade in the south portion of the building (see location below). c+' ressvu — v�.lda x.+e rpQ AI Ln R L+ W M-Ai f5 J/ A"'�` N Areas backfilled with j� subgrade observed clean rock JSlab n 616118 ' i cC u eAs ce ccxc. srux� Y.170'.■ nf2GH f Fi5 NS - - SIK - Z-VTn-5ua --�� - // t�'ilc r-j ��-------- 1u asecr � WL—T �. I•H� PSS�T I `• _ __ _ K80 Ion.L 17'LCIG. IlY1. µ �� M.ASYAIV i i -- . il0' P17 WW LK & __ _ 11I PAR*+x IR-' n7SMl �ICh, rry. CD 6' CpG. Y�-eTMFADE AT RAM w/N�ly py, eArM lur Mo-"gnu +' V y-�e-axW 9 ro s VAAL 5EE 117R45 rtl . Ipk rLVOArWRµ b I Ikean+ +N p CP PLR RPC+iG ® SLiT -0 aPA} Ib tll LRN'W q5so uax I 1 I 1 6w" 1 p Iff p n -- M - ry 1. 4 R!" 01 COW_ LLCA.M WM'4H OF Rou R�aflli PNS 3'S»9vTO AVJ09A�N�RbIMb 7-7777F\ \ 16-217 Westgate Village FR 13 2018-6-6 FIELD REPORT The footing backfill/slab subgrade consists of outwash sand with gravel and trace amounts of and fines (see Photo 1). Clean rock (1/2" to 3/4") was also used to backfill the areas (proposed stairway and electrical room) between gridlines CH and CJ and gridlines C7 and C9 due to the limited access to place soil backfill. The contractor compacted the slab subgrade in approximate 1-foot lifts with a jumping jack and 3-ton vibratory roller. Water was added to aid in compaction. We probed the compacted slab subgrade using a 1/2 inch diameter steel T-probe and observed Photo 1: Footing backfill/slab subgrade observed approximately 1 to 2-inches of penetration and found it to be dense and unyielding. In our opinion, the prepared subgrade was consistent with the approved plans and our recommendations. Additional Notes The slab with thickened edge in the south portion of the building has not been compacted. The contractor noted they will compact the subgrade at these locations to a dense condition before the thickened slab is poured. The contractor also noted they will compact the rock backfill (surface lift) placed between gridlines CH and CJ and gridlines C7 and C9 such that the vibration can reduce potential voids. Excavation and Shoring Wall Performance Based on the most recent survey data through June 1, 2018, the soldier pile shoring wall has moved less than 1/2 inch, indicating the soldier pile walls have performed adequately Signed: 16-217 Westgate Village FR 13 2018-6-6 Page 2 of 2 PanGEO, Inc. Permit# BLD20161538 (Building) Permit# BLD20180034 (Shoring) PanGE@) I N C O R P O R A T i Y Geotechnical and Earthquake Engineering Consultants 3213 Eastlake Ave E Ste B Project No. Page No. Seattle, WA 98102 16-217.300 1 of 2 Tel: (206) 262-0370 Fax: (206) 262-0374 Report No. Date / Day of Week 14 April 19, 2019 / Friday May 3, 2019 / Friday Project Name Location or Address Westgate Village 10032 Edmonds Way, Edmonds, WA Owner Permit No. Weather Westgate Village LLC BLD2016-1538 (Building) Clear, — 60s BLD2018-0034(Shoring) Architect: Studio Meng Strazzara General Contractor: W.G. Clark PanGEO Field Rep. Structural: Quantum Earthwork Contractor: Prime Core William Chao A PanGEO representative was on site on April 19 and May 3, 2019 to observe the subgrade below the proposed permeable pavement required by the City of Edmonds. The following summarized our observations. Permeable Pavement Sub2rade While on site, we observed the permeable pavement subgrade at the locations indicated in Figure 1 below. 3JILDING e .� .. ti IM IM o `� ,R _ „ All<:�.. ` ' ARE NIN w.. !G. • ET 5iUft11RRlER OETEM11a ; •.. �"�` & - '�... RDWAK 5M SiR11CTI M "- y a :tyF +1 � : DETAL 1S/SMI M ACCOL �� .. RAW DpIM ' •-' .'$¢. • 'd Y �' L' V,:•: 4`40M WTRPM LRAC p wALL TO MAN jj%%,,7,, �` . AKU .., P.':' � RDOF 0141RAHC ' �. ' �� �:•� F;•; .. Fi5• � � __ Figure 1 — Location of subgrade observed (highlighted in red, modified from civil sheet C-1.0) 16-217 Westgate Village FR 14 2019-4-19_5-3 FIELD REPORT The exposed subgrade generally consists of medium dense to dense, native silty sand with gravel. After the subgrade was exposed, it was backfilled with 6 inches of 3/4 - 2" clean crushed rock, per plans (Sheet C-6.2). The contractor noted that, per Sheet C-6.2, they would place additional 1 inch of 1/2-inch clean crushed rock on the top of 3/4 - 2" clean crushed rock. 2. Photo 1 shows the subgrade excavation and backfill of crushed rock in the proposed eastern parking area we observed. In our opinion, the prepared subgrade observed was Photo 1: Permeable pavement subgrade observed, looking north consistent with the approved plans and our recommendations. Signed: 16-217 Westgate Village FR 14 2019-4-19_5-3 Page 2 of 2 PanGEO, Inc. Permit# BLD20161538 (Building) Permit# BLD20180034 (Shoring) PanGE@) I N C O R P O R A T i Y Geotechnical and Earthquake Engineering Consultants 3213 Eastlake Ave E Ste B Project No. Page No. Seattle, WA 98102 16-217.300 1 of 2 Tel: (206) 262-0370 Fax: (206) 262-0374 Report No. Date / Day of Week 15 May 9, 2019 / Thursday Project Name Location or Address Westgate Village 10032 Edmonds Way, Edmonds, WA Owner Permit No. Weather Westgate Village LLC BLD2016-1538 (Building) Clear, — 70s BLD2018-0034(Shoring) Architect: Studio Meng Strazzara General Contractor: W.G. Clark PanGEO Field Rep. Structural: Quantum Earthwork Contractor: Prime Core William Chao A PanGEO representative was on site on May 9, 2019 to observe the subgrade below the proposed permeable pavement required by the City of Edmonds. The following summarized our observations. Permeable Pavement Sub2rade While on site, we observed the permeable pavement subgrade at the locations indicated in Figure 1 below. R45'.. Nr- ti.". 1 • "'�. ". ° o°°eoe °e°°v REMAIN. SI RA•. , F Subgrade 4 DETAIL 18 20, f observed RLM1 45.000W I �� . previous) r o� � UNDER l .BUILDING=':. ._.a.' 1 SubgFade observed on &9— � ROOF OVERHANG- R25'' R25 R45 s —R45' R25' &\ P8WX'M 117.9E ' Figure 1 — Location of subgrade observed (highlighted in red, modified from civil sheet C-1.0) 16-217 Westgate Village FR 15 2019-5-9 FIELD REPORT Upon arriving on site, we observed that the exposed subgrade has been covered with clean crushed rock the subgrade appeared medium dense/dense based on the results of our soil probing. We were able to observe the soil subgrade located to the south of the permeable pavement (not covered by crushed rock), which generally consists of medium dense to dense, native silty sand with gravel. This is consistent with exposed subgrade we previously Photo 1: Permeable pavement subgrade observed, looking observed in the adjacent permeable pavement areas to SW the north. Therefore, it is our opinion that the subgrade we observed on 5/9 generally consists of medium dense/dense, native silty sand with gravel. While on site, we observed all exposed permeable pavement subgrade has been backfilled with 6 inches of 3/4 - 2" clean crushed rock, per plans (Sheet C-6.2). The contractor also placed additional 1 inch of '/2-inch clean crushed rock on the top of 3/4 - 2" clean crushed rock. Photo 1 shows the permeable pavement subgrade in the proposed southeast parking area. In our opinion, the prepared subgrade observed was consistent with the approved plans and our recommendations. FF'g MAMAM'al' Signed: 16-217 Westgate Village FR 15 2019-5-9 Page 2 of 2 PanGEO, Inc. Permit# BLD20161538 (Building) Permit# BLD20180034 (Shoring)