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Report Main Office Branch Office PO Box 23814 4060 Hudson Ave. Tigard, OR 97281 Salem, OR 97301 Carlson Testing, Inc. Phone (503)684 -3460 Phone (503)589 -1252 Fax # (503)684 -0954 Fax # (503)589 -1309 August 19, 1998 /4 s r9 g - `�° a #97-G1353 - 7 Beacon Homes 9500 SW 125th Ave. 9i,i, � ' 1 Beaverton, OR 97005 -- FINAL SOILS LETTER DAKOTA MEADOWS - BUILDING PADS 1-4 and 18 -25 CITY OF TIGARD, OREGON This letter confirms that as of August 11th, 1998, density testing on the granular engineered fill was adequately completed. Based on our observations and testing, the fill location was properly prepared and the fill achieved at least 90 percent of the modified Proctor maximum dry density. The above listed pads are suitable for foundation and slab support. Information contained herein is not to be reproduced, except in full, without prior authorization from this office. If there are any further questions regarding this matter, please do not hesitate to contact this office. Respectfully submitted, //A 3/ ,� � t6(A#6.zio CARLSON TESTING, INC. `/A�i a — " / � C � } 0:0 PR pF£s /� c / / xl% ` , �NGINE£R si , - �' / I �� 14 7 4 14743 / g9 4 - �� ' / -7 I �'tJ�W 4 / A // . OREGON l P.L. � 23. X99 P 4 /k- // 3 9f �£S p. 1M6� L6:7 6,. ' rye G� � — `/ 3 � 'd(�/ / / q l3f P � ' !i ��- James D. Imbrie, P.E. �O l �� ) le/(d Geotechnical Engineer Ai- // 3q 74'Lt � / cc: City of Tigard as _ //35D ,'et___ a3- I/376 )d-a) , L auv i-e / t---- �a'f 3 =� - sue = -__&'_ a5- 17370 0) 2 >kc51e- ` Mal fft, Branch Office PO 83x/3814 4060 Hudson Ave. 10 Tigard, OR 97281 Salem. OR 97301 Carlson Testing Inc. - Phone (503)684 -3460 Phone (503)589 -1252 Fax # (503)684 -0954 Fax # (503)589 -1309 August 19, 1998 #97-G1353 ') J /13 i -77 ,,2 Beacon Homes /_; 9500 SW 125th Ave. Beaverton, OR 97005 FINAL SOILS LETTER DAKOTA MEADOWS - BUILDING PADS 1-4 and 18 -25 CITY OF TIGARD, OREGON This letter confirms that as of August 11th, 1998, density testing on the granular engineered fill was adequately completed. Based on our observations and testing, the fill location was properly prepared and the fill achieved at least 90 percent of the modified Proctor maximum dry density. The above listed pads are suitable for foundation and slab support. Information contained herein is not to be reproduced, except in full, without prior authorization from this office. If there are any further questions regarding this matter, please do not hesitate to contact this office. Respectfully submitted, - CARLSON TESTING, INC. 104' 1* C,d,GV �� ikEO PROF f3 , s 12 6 (il ■ Fl nQ ' 5 E GIM R i � 14743 o 29r `\�, -, I (Z 2- ( 6 1� — _ /�l ✓ Ai � v (2 6 tit. ..� �� �; �,•. - ��� - 1 1 20 , a k Co A Maid OREGON , i �4 9 0 l_ -001 61/0* . e fZna Ltd 4 41es D. 11 40 c- 7 I - ° I 1 l I ( uf H,nu lik ..• I( 32( &L- (u.. to firIct•-6 James D. Imbrie, P.E. Zt Geotechnical Engineer t • • "'. 3-2 1(3 0 ' '-�i,1-v , cc: City of Tigard n _ i t?,� b gvb� ro- v .\ ,,-,g0 Na, ,� • Up/ La/ as nr.v 1 . 1 , : 4 . ) rite. alp.) o! u U141 I.APCLJVIV 1GJ1llvV LeJUUS Main ' 'wice Branch Office ` ,. PO Bc.,3814 4060 Hudson Ave. Tigard, OR 97281 Salem, OR 97301 Carlson Testing Inc. Phone (503)684-3460 Phone (503)589 -1252 Fax # (503)684-0954 Fax # (503)589 -1309 July 28, 1998 CTI #97 -G1353 Beacon Homes 9500 SW 125th Avenue Beaverton, Oregon 97005 FINAL REPORT OF EARTHWORK OBSERVATION AND TESTING DAKOTA MEADOWS SUBDIVISION TIGARD, OREGON Carlson Testing Inc. (CTI), has conducted on -call inspection services for the earthwork at the above residential development located off SW North Dakota & SW 105th PI in Tigard, Oregon. This final letter briefly summarizes our observations and testing during construction, and the as -built soil conditions to the best of our knowledge. Foundation design input has already been addressed in previous reports provided by CTI. In addition, CTI has reviewed and stamped the approved plans to verify that the previous recommendations were incorporated into the design of the foundations. SITE PREPARATION AND FILL PLACEMENT Based on our visual observations and our density test results, after stripping vegetation and topsoil, engineered fill using on -site soil was moisture- conditioned and placed on the following areas to a maximum depth of approximately 3 feet. LOTS: 5 - 17 and 23 - 25 Based on the in -place soil density results and our visual observations, it is our opinion that the engineered fill on the above lots was generally placed in conformance with the City of Tigard standards. On the attached test summary, lot tests LF -1 through LF -20 were density tests taken during both a morning and afternoon visit by CTI on 1 -9 -98. These test were slightly lower than the minimum compaction requirement. CTI conducted a follow up visit on 2 -3 -98 and retested the failing areas. All retests exceed the minimum compaction requirement. The retests are listed as structural fill tests SF -1 through SF -6. The engineered fill is considered suitable for support of spread footings. The remaining lots within the subdivision were either cut lots or lots left near original grade. l 04 64.d,re/4 Jo+ a dd hP/A 5 (12 00 fu, (c ✓ 1137 bvtftvLo (P 11 210 & -C. - o ✓ � . - 0 .3 I l 22-0 6t-�-Lv ../ (l 3 So �' IA 10 121-1 0 ' , -(4,(,o ' 1-a (.1 to )0 I Z l (2 - 2o 614 =Q,t 13 it 2- i�,Ax Co i t 12 10 64-44767 5 II 0 &e 0,8/29/99 WED U7:44 FAA. 503 U70 9147 CAKLSUN 1ES 11NG 10004 CTI #98-G1353 Dakota Meadows Page 2 • CLOSING AND LIMITATIONS Our reports pertain to the materials tested /inspected only. This letter should not be construed to relieve or lessen the responsibility of the contractor or owner's site representative for this site work, but is provided for the minimum required governmental assurance. Our support was given on an as- needed basis as requested. If conditions are encountered during foundation excavation which differ from this report, then the developer (Beacon Homes), the contractor (GVS), and CTI should be allowed to review the condition before corrective actions are taken. Corrective work performed by the builder without notifying the above parties will be interpreted as an acceptance of the conditions encountered. Respectfully submitted, (CO4is PR OF CARLSON TESTING, INC. ttG1 � E£iQ 'o 14743 / 4 OREGON d 23. 1990 4 'yES p, Brian D. Leach, E.I. James D. Imbrie, P.E. Engineering Associate Principal Engineer Attachments: Summary report of in -place soil density tests U!9 /L9/99 1Yt.l) U7 :44 FAA SUS t7U 9147 CARLSUN lFS 11NG I41005 CTI #98 -G1353 Dakota Meadows Page 3 APPENDIX A IN -PLACE DENSITY TESTING A minimum of 90 percent of the maximum dry density obtained from the Modified Proctor (AASHTO T - 180) was required for engineered fill placed in the lots of this development. The field density testing was performed in general conformance with ASTM D2922 and D3017, utilizing a nuclear density gauge. -A complete density test result summary is attached. Prefix designations on the test nos. indicate the type of fill being tested as follows: NC- No Code (general fill areas and backfill) LF- residential Lot engineered Fill RF- Roadway engineered Fill PS- Pavement Subgrade BC- Base Course RW- Retaining all 'backfill WT- Water line Trench ST- sanitary Sewer Trench DT- Storm Drain Trench Any suffix designation's (A, B, C, etc.) indicate results of retests which immediately follow the original failed test. • 09/29/831 WED 07:44 FAA 50:3 ti7U 9147 CAKLSUN 1t.S11N1, IgJUUIi Construction Inspection & Related Test: Carlson Testi Inc. SUMMARY REPORT OF P.O. Box 23814 IN-PLACE DENSITY TESTS Tigard, Oregon 97281 97-G/ 353 Phone (503) 684-3460 JOB NO. FAX (503) 684 -0954 Jul 16s 1998 Client BEACON HOMES Project DAKOTA MEADOWS - • LA8 MAX % AD). HELD FIELD DRY RELATIVE DATE OF TEST TEST LOCATION D RY Dewy coma "Ax MOISTURE o ry COMPACTION TEST NO On) PARTICLES DENS. (%) OD /l (%) BC STA T ON 3 +50 SW N DAKOTA TO 1 18' RIGHT OF CENTERLINE 3 - 6 144.6 7.7 127.5 � BC STATION 4-x-25 SW N DAKOTA TOP 12' RIGHT. C CENTERLINE 3- 6 , 144.6.8.2 137.8 9F BC STATION 4 +75 SW N DAKOTA TOP 3 16' RIGHT OF CENTERLINE 3- 6 144.6 6.8 127.5 .-lE LF LOT 53 CENTER +2.0 1 1- 9 144.6 5.5 124.3 et LF LOT 65 CENTER +2.0 1 - 9 144.6 5.5 125.4 ,, LF LOT 7s CENTER +2.0 1 9 144.6 6.1 126,4 2' LF LOT 81 CENTER +2.0 4 1- 9 144.6 5.6 123.5 5' LF LOT 9s CENTER +2.0 5 1- 9 144.6 6.4 121.4 R. LF LOT 10, CENTER +2.0 6 1 - 9 144.6 6.1 121.9 LF LOT 11, CENTER +2.0 7 1- 9 144.6 6.6 125.9 LF LOT 12, CENTER +2.0 8 1- 9 144.6 6.4 126.3 S LF LOT 13s CENTER +2.0 1 - 9 9 1 144.6 6.8 127.1 8 cc: CITY OF TIGARD ALPHA ENGINEERING INC CARLSON TESTING INC Information contained herein is not to be reproduced, except in full, without prior authorization from this office. U9/29/99 WED 07:45 FAX 503 670 9147 CARLSON TESTING 140007 C arison TInc. . Construction Inspection & Related Te: SUMMARY REPORT OF IN -PLACE DENSITY TESTS P.O. Box 23814 Tigard, Oregon 97281 JOB NO_ 97-G 1 = 53 Phone (503) 684 -3460 FAX (503) 684-0954 Jul 165 1998 Client BEACON HOMES Project DAKOTA MEADOWS SW NORTH DAKOTA SW 105TH FL - TIGARD --- DATE OF TEST emmEPna tns wa x ADJ. RRD ' FIELD Oar DEVINE TEST NO TEST LOCATION in) DRY DENSiY COARSE MAX MOISTURE oENSr>Y ca pit) PARrmus DENS OW pb!n3) lxf LF LOT 5s FRONT CENTER -2.0 10 1- 9, LOT 6s FRONT CENTER 144 6.1 127.5 E 11 -2.0 1- 9 _ LF LOT 71 FRONT CENTER ' 144_0 6_` 124.2 12 1- 9 LF LOT es FRONT CENTER -2.0 144. ' ° '' i 22.7 13 1- 9 i 44 - d; 6.4 1 5.3 8 LF LOT 9, FRONT CENTER 14 -2.O 1- 9 LF LOT 10, FRONT CENTER 144 5.9 1`x'0 15 -2.0 1- 9 LF LOT 11s FRONT CENTER 144. 6.3 124._ fi 16 -2 °O 1- 9, LF LOT 121 FRONT CENTER -2.0 144.6 6.0 125.3 17 1- 9 LF LOT 151 BACK CENTER 144. 5 • 124.7 8c 18 -2.0 1- 9 LF LOT 16s BACK CENTER /� 144 7.0 126.1 $7 19 - 2.0 1- 9 LF LOT 17, BACK CENTER 144.6 6.8 125.9 87 -2.O 20 1- 9 LF CENTER OF LOT 17 144.- 6.3 125.3 S7, 21 144.6 8.01143.0 99 cc: CITY OF TIGARD ALPHA ENGINEERING INC CARLSON TESTING, INC. Information contained herein is not to be reproduced, except in full. with r nrinr 2'0hnri-porinn U,'� /La /li!! WED 07:45 FAX 503 ($70 !J147 CAKLSUN lt;S'1'1N(G igloos Construction Inspection & Related Test Carlson Testiig, Inc. �. SUMMARY REPORT OF P.O. Box 23814 IN -PLACE DENSITY TESTS Tigard, Oregon 97281 Phone (503) 684 -3460 JOB NO. 97-G135-3 FAX (503) 684-0954 • Jul 169 1998 Client BEACON HOMES Project DAKOTA MEADOWS - ,r n 41 - 14. • , r. ._^ -- - I DATE OF TEST ELEv/DEpIH lne MAX % nu. Ann FELD oar ROANE TEST LOCATION Frj DRY COARSE MAX MPJRE oErwm con�v&CTON TEST NO �,rR') tE6 ofi� l % po1rt ( °6} LF CENTER OF LOT 23 2 - 3 144_ 7.5 137.3 9€ LF CENTER OF LOT 24 2.1 ?- 7, 144.6 7.9 140.4 9 LF CENTER OF LOT 25 24 3 144.6 8.8 14.3.3 tip SF FILL BETWEEN LOTS 5/6 1 3 144.6 3.1 142.5 9'; SF FILL BETWEEN LOTS 7/8 2 - 3 144.(. 7.7 13S.8 • ?� SF FILL BETWEEN LOTS 9/10 3 J 2- 3 144.6 7.9 141.1 ai SF FILL BETWEEN LOTS 11/12 4 2- 3 144.E 6.9 137.7 ar SF FILL BETWEEN LOTS 13/14 5 �.- 3 144.E 7.3 137:4 9! SF FILL BETWEEN LOTS 15/16 6 144.4 S . 2 139.8 ", • ST STATION '�' +00 LINE "B" - 1.0 1 SANITARY SEWER TRENCH 12 S 144.6 12.4122.0 ST STATION 1 +00 LINE "B" -1.0 2 SANITARY SEWER TRENCH • 12- S 144.6 9. 119.6 8!: ST STATION 3 +00 LINE "A" - 1.0 3 SANITARY SEWER TRENCH 12- ° 144.4 9.6 123.0 >3E cc: CITY OF TIGARD ALPHA ENGINEERING INC CARLSON TESTING INC Information contained herein is not to be reproduced, except in full, without' prior authorization from this office. UM/ [aitit! )thV ui_4a rAe OUJ O1u a 14 1 t,AKLJUiv 1CJlllvt, Ijuua C arlson Testing, Inc. Construction inspection & Related Tests SUMMARY REPORT OF P.O. Box 23814 IN -PLACE DENSITY TESTS Tigard, Oregon 97281 97 -0135 Phone (503) 684 -3460 JOB NO. FAX (503) 684-0954 Jul 161 1998 Client BEACON HOMES Project DAKOTA MEADOWS SW NORTH DAKOTA & SW 105TH PL_- TIGARD _ DATE OF TEST eivIDEFTH IA MAX % ADJ. REW FELD DAY REIATIYE TEST LOCATION am DENSR M Y - COARSE MAX M05TURE DEN CatAPacCN T TEST NO � � r3I PART C1ES DENS. {9s) � r lr ) ST LOT 19 LATERAL LINE "A" -1.0 4 SANITARY SEWER TRENCH 1E- 8 144.6 8.5 118.5 321 ST LOT 13 LATERAL LINE "A" -1.0 5 SANITARY SEWER TRENCH 12- 8 • 144.6 13.9119.5 83 ST STATION 2 +C0O LINE "A" -3.0 6 SANITARY SEWER TRENCH 12- 8 144.6 15.2120.3 83 ST STATION 1 +75 LINE "A" -1.0 7 SANITARY SEWER TRENCH 12- 8 144.6 12.9117.4 81 ST LOT 9 LATERAL LINE "A" -1.0 8 SANITARY SEWER TRENCH 12- 8 144.6 11.5121.5 84 ST STATION 1 +25 LINE "A" -4.0 9 SANITARY SEWER TRENCH 12- 3 144.6 ` 14.6123.6 86 ST LATERAL LOT. 3 LINE "A" -1.0 10 SANITARY SEWER TRENCH 12- 8 144.6 12.4120.3 83 ST STATION 0 +10 ON NORTH DAKOTA -1.0 11 SANITARY SEWER TRENCH 12- 8 _ 144.4 14.0125.4 87 ST LOT 6 LATERAL ON NORTH DAKOTA -1.0 12 SANITARY SEWER TRENCH 12- 8 144.d 12. ' 32 cc: CITY OF TIGARD ALPHA ENGINEERING INC CARLSON TESTING INC. Information contained herein is not to be reproduced, except in full, without prior authorization from this office.