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20150724090056.pdfJr r , �a �� @ ;p; ASS CAT S, :' NC. _e Geotechnical Engineering Engineering Geology Earth Science July 10, 2015 Mr. Mark Schmitz Almark Homes P. O. Box 14425 Mill Creek, WA 98082 Dear Mr. Schmitz: Subject: Geotechnical Final Inspection Report Precast Concrete Block Walls Single -Family Residence 8040 Cyrus Way Edmonds, Washington L&A Job No. 14-096 RECEIVED JUL 2 3 2015 ENGINEERING DIVISION We provided geotechnical inspection services for the subject precast concrete block wall project since its start on January 22, 2015. The items we monitored and inspected include: 1) cut bank stability, 2) foundation bearing soil verification, 3) wall drainage installation, 4) block wall and geogrid mesh placement, 5) backfill placement and compaction, and 6) final grading, landscaping and permanent erosion control. The cut banks for construction of the two-tiered block wall were excavated into an advance outwash deposit of dense fine to medium sand and had remained stable for duration of construction. The wall bearing soil at bottom of the keyway trenches was verified to be dense advance outwash sand soil. The base blocks were set on a layer of compacted 5/8 -inch crushed rock base. A 4 -inch perforated PVC drain lines were placed in the keyway trenches along the bases of the walls. A layer of drain mat consisting of 10 -inch thick (horizontally) 5 -8 -inch crushed rock was placed against the back of each 19213 Kenlake Place NE - Kenmore, Washington 98028 Phone (425) 483-9134 - Fax (425) 486-2746 July 11, 2015 Single -Family Residence Block Walls L&A Job No_ 14-096 Page 2 tier wall and connected to the wall drain lines. The blocks were placed tightly against one another. Onsite clean advance outwash sand soil was used to backfill the walls. The fill is placed in 10 -inch lifts with each lift compacted to required density. In-situ fill density was tested by Ages, LLC, with their test reports (Attachment 1 - 1/3 to 3/3) attached to this report. Layers of geogrid mesh were anchored between rows of blocks and embedded in the wall backfill at elevations shown on the design drawings. The wall backslopes have been dressed to final grades, covered by shredded bark and landscaped with shrubs. Our Daily Field Reports 1 through 7 for this project are attached hereto for your review. It is our opinion that the construction of the subject block walls is in substantial compliance with city approved plans and specifications. Please contact us if you have questions. Yours very truly, LIU SSOCI".1"; Q, INC. J. S. (Julian) Liu, Ph.D., P.E. Consulting Geotechnical Engineer Attach.: 1. Field Density Test Reports 1 through 3 by Ages, LLC. 2. Daily Field Reports 1 through 7 LIU & ASSOCIATES, INC. P.O. Box 935 AGES L, L C Puyallup, WA. 98371 Main (253) 845-7000 Ages Geotechnical Engineering Services www.agesengineering.com DAILY FIELD MEMO Project Name: Almark Single -Family Residence Location: 8040 Cyrus Place, Edmonds, WA. Weather: Sunny Reason for Visit: Density Tests - Wall Construction Date: February 23, 2015 Project #: A-256 Report #: 1 Page: 1 Of Field Representative: Bernie Knoll UM Time: Mileage: Time: Mileage: Time: Mileage: Leave Office 12:00 pm 0.0 Arrive Site 1:00 pm 25.6 Leave Site 2:00 pm 25.6 NOTES: An AGES, LLC representative visited the site to perform field density tests on structural fill placed behind the Segmental Block wall currently under construction at the subject site. At the time of our site visit, the contractor had prepared the wall subgrade by placing a leveling course of crushed rock. Additionally, they had placed the base row of blocks along the northern 50 feet of the wall alignment. A 6 -inch perforated pvc pipe was placed behind the blocks. Geogrid reinforcement was placed on top of the lowest row of blocks. The structural fill planned for use behind the wall consisted of the material excavated from the wall alignment. The structural fill consisted of a fine- grained sand with silt and gravel. A plate compactor was on site to use for compaction. At the time of our site visit, there was no areas ready for testing. Therefore, we re -visited the site at the end of the day to obtain density tests on the compacted fill. A sample of the structural fill was obtained for lab analysis to determine the laboratory maximum dry density according to ASTM D-1557 Modified Proctor. The wall specification indicate the structural fill should be compacted to at least 92 percent. All areas tested indicate at least 92 percent of the laboratory maximum dry density was obtained. nomagammumomi Soil Moisture Compaction No. Location Elevation Type i nsity % % 1 10 feet south of north end of wall +16" A 124.1 8.3 92 Project Manager:Yri-"' Field Representative: P.O. Box 935 LLPuyallup, WA 98371 A.G-ES, C, Main (253) 845-7000 Ages Geotechnical Engineering Services www.agesengineering.com DAILY FIELD MEMO Project Name: Almark Single -Family Residence Location: 8040 Cyrus Place, Edmonds, WA. Weather: Sunny Reason for Visit: Density Tests - Wall Construction Date: February 24, 2015 Project 4: A-256 Report #: 2 Page: 1 or l Field Representative: Bernie Knoll Time: Mileage: 'rime: Mileage: Time: Mileage: Leave Office 4:00 pm 0.0 Arrive Site 5:00 pm 25.6 Leave Site 5:30 pm 25.6 NOTES: An AGES, LLC representative visited the site to perform field density tests on structural fill placed behind the Segmental Block wall currently under construction at the subject site. At the time of our site visit, the contractor had placed structural fill up to the top of the 5`l' block (3.33 feet) along the northem end of the wall, and up to the top of the P block (2.0 feet) around the bend in the wall at the south end_ The plate compactor broke down yesterday so they replaced it with a hand -guided jumping jack compactor. The structural fill continues to consist of the soil excavated from the wall alignment and stockpiled on the site. All areas tested indicate at least 92 percent of the laboratory maximum dry density was obtained. No. Location Elevation Type � Density Moisture Compaction 0 0 2 10 feet east of west end of wall +16" A 128.1 8.2 96 3 30 feet south of north end of wall 3.33' A 127.2 8.0 95 Project Manager:„ - Field Representative: P.O. Box 935 Puyallup, WA. 98371 A,G-ES L L C Main (253) 845-7000 Ages Geotechnical Engineering Services www_agesengineering.com DAILY FIELD MEMO Project Name: Almark Single -Family Residence Location: 8040 Cyrus Place, Edmonds, WA. Weather: Sunny Reason for Visit: Density Tests - Wall Construction Date: February 25, 2015 Project #: A-256 Report #: 3 Page: 1 of Field Representative: Bernie Knoll Time: Mileage: Time: Mileage: Time: Mileage: Leave Office 9:00 am 0.0 Arrive Site 10:00 am 25.6 Leave Site 5:00 pm 25.6 NOTES: An AGES, LLC representative visited the site to perform field density tests on structural fill placed behind the Segmental BIock wall currently under construction at the subject site. At the time of our first site visit, the contractor had placed structural fill up to the top of the 5`h block (3.33 feet) along the entire wall length. At the time of our afternoon site visit, the contractor had placed structural fill up to the top of the 7a` block (4.66 feet) along the north end of the wall. The contractor continued to use a hand -guided jumping jack compactor for compaction. The structural fill continues to consist of the soil excavated from the wall alignment and stockpiled on the site. All areas tested indicate at least 92 percent of the laboratory maximum dry density was obtained. a Soil Moisture Compaction No. Location Elevation Tye Density % % 4 45 feet south of north end of wall 3.33' A 128.2 8.0 96 5 27 feet south of north end of wall 3.33' A 131.0 8.4 98 6 32 feet south of north end of wall 4.66' A 130.5 8.6 97 Project Manager: ( Field Representative: DAILY FIELD REPORT LIU & ASSOCIATES, INC. 14-096 Geotechnical lwr_t„incentip,, Iingincering 4"lwix_&'v & (""kvdr s_;ienr _les _ 34 19213 Kenlake Place NE rave ime Kenmore, Washington 98028 1 Phone: (425) 483-9134 Fax: (425)486-2746 Veh. i-irs on Project o oca ion Sinale-Familv Residence 8040 Cvrus Wav General Contractor General Contractor Project Almark Coro. Mark Schmitz Permit No. J, cly 1/1 1 1 Time On Site Date may o Weed 11:05A 1/22/2015 Thur, rime Off Site eat er 11:45A Cloudv rs Charoed lVisitors' Almark At the request of Mark Schmitz with Almark Corp., I come onsite today to monitor excavation and stability of cut banks for the construction of precast concrete block wall and foundations of the subject residence_ The soils exposed on the cut banks are consisted of about 15 inches of topsoil, underlain by 2 to 3 feet of brown silty fine sand, which is in turn underlain by light -brown to light -gray beds of fine to medium sand and gravelly fine to coarse sand. The sand deposits appear to be advance outwash and is dense. The completed excavation as of this day consists of a 1 H:1V slope for about the top 8 feet and two vertical steps of about 2.5 to 3.0 feet high each, then down to a level bench. Groundwater is not encountered by the excavation. The cut banks are stable without signs of sloughing and erosion. The gravelly sand at the bottom bench is dense and will be able to render an allowable bearing capacity of at least 3,000 psf and will be able to provide adequate foundation support to_block walls and the building The cut banks will remain stable for the duration of block wall and building foundation foundations construction. It is my opinion that the workers will be safe working in the excavated area for the duration of wall and building foundation construction. The clean sand and gravelly sand soils onsite will be suitable for use as structural fill in backfilling the block walls provided they are free of topsoil, roots, and debris. Also, the sand deposits stored onsite to be use as structural fill should be covered with plastic tarp to keep them from saturated by rain. Copy to: 1) Mark Schmitz/Almark Corp_ 2) 4) Continue On Next DAILY FIELD REPORT Permit No. oba ®we ep ale epo LIU & ASSOCIATES, INC. 14-096 J. iu 1/1 2 t�eolechnical F'sig inerring, V"Inginccring„ �daxst�ig?,y rGla iei cncwmiles4C rro to 'ate �xa ee 34 9:15A 2/23/2015 Mon. 19213 Kenlake Place NE gravel Tune rime Off Site 'Weather, Kenmore, Washington 98028 1 1:30P Sunn Phone: (425) 483-9134 Fax: (425)486-2746 Veh, Mrs on site cha*d Isitor Residence Mark Schmitz LLC At the request of Mark Schmitz with Almark Corp., I come onsite today to monitor construction of the two-tiered precast concrete block wall east and south of the house on the lot. The two tiers are to poin into one as wall steps down the south side of the house. A keyway trench has been cut into the level bench behind the house and on the slope south of the house for construction of the block wall. The bottom of the keyway trench is excavated into a light -brown, dense, fine to medium sand of advance outwash deposit. Groundwater is not encountered by the keyway trench. The dense sand should be able to provide adequate foundation support to the wall. Detaining Walls Northwest has a 3 -man crew building the block wall. They use a vibratory plate compactor, to compact the exposed soil at bottom of the keyway trench to a -non -yielding -state_ They then laid a 6 -inch perforated PVC rain pipe wrapped in a layer of non -woven filter fabric on the bottom of the keyway trench behind the to -be - constructed block wall and covered the drain line with 5/8 -inch -minus crushed rock as they build the crushed rock base for the wall. Water in the drain line is to be carried southward behind the house, then westward down the slope along the south side of the house. The base blocks are then laid on the crushed rock base. As the layers of blocks are laid, 5/8 -inch -minus crushed rock is placed immediately behind the wall to construct a free -draining vertical drain mat behind the wall. Onsite soil from a stockpile is then used to backfill the wall beyond the crushed rock vertical drain mat. The structural fill is also compacted with the vibrtaory plate compactor_ In-situ density tests of the structural fill is to be provided by AGES, LLC. Detaining Walls Northwest's crew has completed the bottom couple of layers today, The work completed on this day is acceptable. Copy to: Continue 1) Mark Schmitz/Almark Corp. 2) On Next 3) 4 Pa e DAILY FIELD REPORT Permit No. o O _1 a -a e euro T LIU & ASSOCIATES, INC. 14-096 �V iu 1/1 3 t acot"41114CA t"ung illcerilw;i, r.11 i41+ U1'k41q t,� wlugy & Earth Science RiesTdn e n tte '� y 34 1:45P 2/2412015 Lues,. 19213 Kenlake Place NE rave cn5e erne Ito We7t Fer Kenmore, Washington 98028 1 2'°;30P Sunny Phone: (425) 483-9134 Fax: (425)486-2746 Veh. Hrs on visftors 2.75 r-0ject--- Job Location rMell Single -Family, Residence 8040 Cyrus, Wav Almark Corp. General Contractor General Contractor Project Manager A= Structural r=oll Test Agency Received tJncheckett By Almark Core. ark AGES, ILC Block Wall Contractor Earthwork Conlractor Supt, Density Test Technician ecelved Checked By Retaining Walls Northwest Inc. Chuck Bernie Knoll RWN's crew continues to build the block wall. They have build the lower tier wall behind the house to about 4 block high. A layer of geogrid mesh is placed every other layers of blocks in the wall backfill. The soil used as structural fill contains clumps of grass sod and other debris. I ask Chuck to remove the sod and debris from the soil before it is placed behind the wall. The work completed on this day is acceptable. Copy to: Continue 1) Mark Schmitz/Almark Corp. 2) On Next :31 41 Pate DAILY FIELD REPORT DAILY FIELD REPORT DAILY FIELD REPORT DAILY FIELD REPORT Permit No. 65-170- LIU & ASSOCIATES INC. 14-096 JH 3 � 1/1 ''° 7 Q i 4ceteaeieal hCrwrorrurar& > L..erp ineering Ciel«gy & Farrth sciellm M-1 e'S Time (fin Haile Sate Day of Week- 34 10:15A 7/10/2015 Thur. 19213 Kenlake Place NE rave ime inle Wte _ M. at ger Kenmore, Washington 98028 110.35A i unn Phone: (425) 483-9134 Fax: (425)486-2746 Veh, Firs on s'r a rs tame otora 1.25 r jecJob LocationMIMI Single-Faimily Residence 18040 Cyrus Wa Alrnark Cori). General Contractor General Contractor Project Manager structural (Fill 'Test Agency Received Unchecked By Almark Corp. Mark Schmitz ACLS LLC Mock VV911 Contractor Earthwork Contractor Supt. Density lest Technician Received Checked By Retaining 'Walls Northwest., Inc. Chock Bernie Knoll ; Stop by today to have a final erosion control inspection for the construction of the two-tiered block wall. The finish grade of the wall backslopes is covered with shredded bark, and is landscaped with shrubs planted. There is no sign of storm runoff or Groundwater seepage in the area of block wall construction, Based on my observation, it is my opinion that the final erosion control of the block wall construction area is completed and acceptable. Copy to: Continue 1) Mark Schmitz/Almark Corp_ 2) On Next 3) 4) Pane P.O Box 935 AGES 1., C Puyallup, WA. 98371 Main (253) 845-7000 A Geotechnical Engineering Services LLC www agesenguieeruig corn March 12, 2015 Project No. A-256 Mark Schmitz Almark Quality Homebuilders P. O. Box 14425 Mill Creek, WA. 98082 Subject: Final Letter Single Family Residence 8040 Cyrus Place Edmonds, Washington Dear Mr. Schmitz, As requested, we have completed our special inspection field work for the subject site located at 8040 Cyrus Place in Edmonds, Washington. Based on the request of the projects design geotechnical engineer, we were required to observe the construction of the tiered reinforced segmental block wall and perform field density tests on the structural fill placed behind the wall. The purpose of our service was to verify the work was performed in accordance to the approved project plans and recommendations provided by the Geotechnical Engineer of record. At periodic intervals during the construction process, the project General Contractor contacted us and arranged site visits to observe and monitor the special inspection item described above. At the time of each site visit, we prepared a Daily Field Memo delineating our observations, documenting our test results, and providing recommendations as necessary to assist in the successful completion of the project. Our site visits began on February 23, 2015 and were completed on March 4, 2015. SPECIAL INSPECTION ITEMS Verify Fill and Compaction, We visited the site on five occasions to verify the structural fill placed on the site was compacted to a minimum of 92 percent of the soils laboratory maximum dry density as determined by ASTM D- 1557 (Modified Proctor). The structural fill placed behind the walls consisted of the silty sand excavated from behind the walls. The soil was stockpiled on the site and placed behind the walls in lifts. Each lift was compacted using a hand -guided jumping jack compactor. At the time of our last site visit, the soil surface behind the walls was firm and stable. All areas tested indicate at least 92 percent of the soils laboratory maximum dry density, according to ASTM D-1557 (Modified Proctor), was achieved at all locations. Mr. Mark Schmitz March 12, 2015 CONCLUSIONS In our opinion, based on our observations during construction, the special inspection item listed above was completed in accordance with the approved project plans and the recommendations provided by the Geotechnical Engineer of record, and by AGES, LLC personnel in the field. We trust this information is sufficient for your current needs. If you have any questions, or require additional information, please call. Respectfully Submitted, AGES, LLC EXPIRES " Bernard P. Knoll, II, P.E. Principal ATTACHMENTS: Daily Filed Memos (5) BPK:bpk Project No.: A-256 Page - 2 - P.O. Box 935 Puyallup, WA. 98371 A-GE� �• �� • Main (253) 845-7000 Ages Geotechnical Engineering Services www.agesengineering.com RIMME DAILY FIELD MEMO Project Name: Almark Single -Family Residence Location: 8040 Cyrus Place, Edmonds, WA. Weather: Sunny Reason for Visit: Density Tests - Wall Construction Date: February 23, 2015 Project #: A-256 Report #: 1 Page: l Of Field Representative: Bernie Knoll am Time: Mileage: 'rime: Mileage: Time: Mileage: Leave Office 12:00 pm 0.0 Arrive Site 1:00 pm 25.6 Leave Site 2:00 pm 25.6 NOTES: An AGES, LLC representative visited the site to perform field density tests on structural fill placed behind the Segmental Block wall currently under construction at the subject site. At the time of our site visit, the contractor had prepared the wall subgrade by placing a leveling course of crushed rock. Additionally, they had placed the base row of blocks along the northern 50 feet of the wall alignment. A 6 -inch perforated pvc pipe was placed behind the blocks. Geogrid reinforcement was placed on top of the lowest row of blocks. The structural fill planned for use behind the wall consisted of the material excavated from the wall alignment. The structural fill consisted of a fine- grained sand with silt and gravel. A plate compactor was on site to use for compaction. At the time of our site visit, there was no areas ready for testing. Therefore, we re -visited the site at the end of the day to obtain density tests on the compacted fill. A sample of the structural fill was obtained for lab analysis to determine the laboratory maximum dry density according to ASTM D-1557 Modified Proctor. The wall specification indicate the structural fill should be compacted to at least 92 percent. All areas tested indicate at least 92 percent of the laboratory maximum dry density was obtained. NoSoil Moisture Compaction Location Elevation prosily P Type % % 1. 10 feet south of north end of wall +16" A 124.1 8.3 92 Project Manager: f I—: Field Representative: ~., ._.. w ._ ......... �e.... .------_w . _. ���� P.O. Box 935 " Puyallup, WA. 98371 Main (253) 845-7000 Ages Geotechnical Engineering Services www.agesengineering.com WHEINAMAUUM DAILY FIELD MEMO Project Name: Almark Single -Family Residence Location: 8040 Cyrus Place, Edmonds, WA. Weather: Sunny Reason for Visit: Density Tests -Wall Construction Date: February 24, 2015 Project #: A-256 Report #: 2 Page: l Or Field Representative: Bernie Knoll Time: Mileage: 'rime: Mileage: Time: Mileage: Leave Office 4:00 pm 0.0 Arrive Site 5:00 pm 25.6 Leave Site 5:30 pm 25.6 NOTES: An AGES, LLC representative visited the site to perform field density tests on structural fill placed behind the Segmental Block wall currently under construction at the subject site. At the time of our site visit, the contractor had placed structural fill up to the top of the 5`s block (3.33 feet) along the northern end of the wall, and up to the top of the 3rd block (2.0 feet) around the bend in the wall at the south end. The plate compactor broke down yesterday so they replaced it with a hand -guided jumping jack compactor. The structural fill continues to consist of the soil excavated from the wall alignment and stockpiled on the site. All areas tested indicate at least 92 percent of the laboratory maximum dry density was obtained. No. Location Elevation Toil Density Moisture Compaction lT % 2 10 feet east of west end of wall +16" A 128.1 8.2 96 3 30 feet south of north end of wall 3.33' A 127.2 ro�ect Manager: u < Field Representative: "� 8.0 95 �P.O. Box 935 Puyallup, WA. 98371 AGES C Main (253) 845-7000 Ages Geotechnical Engineering Services www.agesengineering.com saffilffiam WSW DAILY FIELD MEMO Project Name: Almark Single -Family Residence Location: 8040 Cyrus Place, Edmonds, WA. Weather: Sunny Reason for Visit: Density Tests - Wall Construction Date: February 25, 2015 Project #: A-256 Report #: 3 Page: l or Field Representative: Bernie Knoll 1 Time: Mileage: Time: Mileage: Time: Mileage: Leave Office 9:00 am 0.0 Arrive Site 10:00 am 25.6 Leave Site 5:00 pm 25.6 NOTES: An AGES, LLC representative visited the site to perform field density tests on structural fill placed behind the Segmental Block wall currently under construction at the subject site. At the time of our first site visit, the contractor had placed structural fill up to the top of the 5th block (3.33 feet) along the entire wall length. At the time of our afternoon site visit, the contractor had placed structural fill up to the top of the 7th block (4.66 feet) along the north end of the wall. The contractor continued to use a hand -guided jumping jack compactor for compaction. The structural fill continues to consist of the soil excavated from the wall alignment and stockpiled on the site. All areas tested indicate at least 92 percent of the laboratory maximum dry density was obtained. No. LocationSoil Elevation .type Density Moisture Compaction % % 4 45 feet south of north end of wall 3.33' A 128.2 8.0 96 5 27 feet south of north end of wall 3.33' A 131.0 8.4 98 6 32 feet south of north end of wall 4.66' A 130.5 8.6 97 Project Manager: Field Representative: ��u�un �� P.O. Box 935 Puyallup, WA. 98371 . A , mw LLC Main (253) 845-7000 Ages Geotechnical Engineering Services www.agesengineering.com DAILY FIELD MEMO Project Name: Almark Single -Family Residence Location: 8040 Cyrus Place, Edmonds, WA. Weather: Sunny Reason for Visit: Density Tests - Wall Construction Date: February 26, 2015 Project #: A-256 Report #: 4 Page: 1 or 1 Field Representative: Bernie Knoll Time: Mileage: Time: Mileage: Time: Mileage: Leave Office 4:30 pm 0.0 Arrive Site 5:00 pm 25.6 Leave Site 5:30 pm 25.6 NOTES: An AGES, LLC representative visited the site to perform field density tests on structural fill placed behind the Segmental Block wall currently under construction at the subject site. At the time of our site visit, the contractor had placed structural fill up to the top of the 91b block (6.0 feet) along the entire wall length. The contractor continued to use a hand -guided jumping jack compactor for compaction. The structural fill continues to consist of the soil excavated from the wall alignment and stockpiled on the site. All areas tested indicate at least 92 percent of the laboratory maximum dry density was obtained. ormanum No_Soil Moisture Compaction Location Elevation Type Density % % 7 30 feet south of north end of wall 6.0' A 129.3 8.2 96 8 15 feet east of west end of wall Project Manager: 6.0' A 129.5 8.4 96 Field Representative: , �����m .... ®3 P.O. Box 935 Puyallup, WA. 98371 ,AGaa�" —d I.d C Main (253) 845-7000 Ages Geotechnical Engineering Services www.agesengineering.com W WwommumenwxlmwmLlmm DAILY FIELD MEMO Project Name: Almark Single -Family Residence Location: 8040 Cyrus Place, Edmonds, WA. Weather: Sunny Reason for Visit: Density Tests - Wall Construction Date: March 4, 2015 Project #: A-256 Report #: 5 Page: 1 Of 1 Field Representative: Bernie Knoll e Time: Mileage: Time: Mileage: Time: Mileage: Leave Office 12:30 pm 0.0 Arrive Site 1:00 pm 25.6 Leave Site 1:30 pm 25.6 NOTES: An AGES, LLC representative visited the site to perform field density tests on structural fill placed behind the Segmental Block wall constructed at the subject site. At the time of our site visit, the contractor had placed structural fill up to the top of the 11t1i block (7.33 feet) along the entire length of the lower wall. The lower tiered wall was complete. The upper tiered wall was also completed. The upper tier wall had no geogrid reinforcement placed behind It and was a total of 5 blocks high (3.33 feet). The contractor continued to use a hand -guided jumping jack compactor for compaction. The structural fill continues to consist of the soil excavated from the wall alignment and stockpiled on the site. All areas tested indicate at least 92 percent of the laboratory maximum dry density was obtained. No.Soil Moisture Compaction G�catiw Elevation Type Density % % 9 42 feet south of north end of wall 7.33' A 128.9 8.0 95 10 30 feet south of north end of wall 6.0' A 129.0 8.7 96 Project Manager: "' Field Representative: