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TRANSCRIPT
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114410th AvenU!?, Suite 200 Honolulu, Hawaii 96816 (808) 135-3585
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1~1 Telex.: 634100 Cable address:.DAMEMORE 't)
fOR REfERE: :CE not to be taken fron1 thls room
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Kacor Realty, Inc. 7210 Kalanianaole Highway Honolulu, Hawaii 96825
Attention: Mr. Mike Morita
Gentlemen:
Letter No. 1
May 28, 1981
Construction inspection, z.iatina lOB Subdivision Hawaii Kid, Oahu, Hawaii
This letter sUJ'IIIllarizes our geotechnical inspection activities for the construction of the f.tarina lOB Subdivision during the period of
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February 10, 1981 through May 8, 1981. Our services during this period were generally rendered on a part-time basis in accordance with our proposal dated AUgust 14, 1980. Site preparation commenced in February.
Tbe scope of our services was amended, upon the request of f.tr. John Higham of yoUr office, to exclude the inspection of all utility line installation. This revision was presented in our letter entitled "Revision in Proposed Scope of Service" dated April 21, 1981.
GENERAL
The initial construction activity for the Marina lOB Subdivision was started on February 10, 1981. This activity included the clearing and grubbing of the northeast portion of the site in preparation for the construction of the surcharge and mobilization of equipment by both B & C Trucking, Inc. and Oahu Construction Company. During the period February 19 through May 8, 1981, many eartht.-ork construction .activities for the proposed project were started. Due to the mat'iy activities being performed on the site, the construction progress for each of the various activities is presented separately under the following beadings:
-1) Site Preparation
2) Roadway Areas
3) Residential Lots
4) Surcharge Area
The locations of the various Plot Plan, Attachment 1.
construction activities are delineated
MUNICIPAL REFERENC-E ..&~OS CENTER
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Kacor Realty, Inc. May 28, 1981 Page Two
Dames & Moore ~.
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Throughout this period of construction, our engineer observed the clearing and grubbing, proof rolling, and construction of compacted fill on a part-time basis. Settlement monitoring was performed for the gauges installed within the surcharge area on the northern end of the site.
Field density tests were also performed within the fill ar~a~. A tabulation of the field den$ity tests is presented on the Summary of Field Density Tests, Attachment 2. The approximate location of each field density test is presented on Attachment 1. Compaction test data were developed to deter~iile the maximum dry density of the on-site fiil material in accordance with ASTM #D-1557-78 Test Procedure. The results of this test ate presented on Attachment 3.
The on-site clayey silt material was used for fill and was generally compacted in a-inch loose lift thicknesses. This resulted in about a 6-inch compacted lift. The material was compacted to at least 90 percent of the ma~iinlliil dry denSity as indicated by the field density tests performed. Field density tests were performed in accordance with ASTM Tests D-1556-64, D-2922-78 and D-3017-78. Specific eartbwork procedures and earthwork construction activities ate presented below in the following sections.
' SITE PREPARATION
During this period, the site preparation generally consisted of clearing and grubbing, and removal of stockpiled dredged spo~l 111aterial and boulders from the southern portion of tl.te site. The approximate limits of these activities are outlined on Attachment 1. The cleared and grubbed areas included the Hawaii Kai Drive extension, ~:1.1 the ft1tu.re Hawaii Kai Drive alignment, and the offsite drainage ditch alignment and settling basin located on. the west side of the f(lture Hawaii Kai Drive alignment. The majority of the subdivision site was intiall.y cleared and grubbed during the construction of the Marina lOB Seawall. Stockpiles of dredged spoil which resulted from this construction activity were left on the project site. The southern portion of the site was cleared of the stockpiled spoil material by B & C Trucking, Inc., Oahu Construction's sub-contractor. The removal of the spoil material generally began at the southern end of the project site and has progressed northward to approximately Lot Nos. 18 and 52. Dredged spoil material was removed to approximately 2 feet below the preconstruction topographic elevations within Lot Nos. 60, 61, and 62. This area is believed to be the location of a silting basin which was excavated during Marina lOB Seawall constructon. Similar basins were constructed throughout the site, generg.lly east of the Road "A" location. The area north of Lot No. 52 still contains large stockpiles of dredged spoil material. which remains to be removed.
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Kacor Realty, Inc. May 28, 1981 Page Three
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Dames & Moore -=-=-· ~"'"'
During the proof rolling of Lot Nos. 60 through 64, additional soft soil was encountered within an area approximately 30 feet square at the west side of Lot Nos. 60 and 61. The contractor was informed that corrective measures should be taken. It is our understanding that the contractor will remove the soft soil prior to the construction of fill within the area. No other earthwork construction was performed within the area.
ROADWAYS
The earthwork construction for the roadway areas started on April 22, 1981 and was generally limited to Road "A" between Sta 0+00 to Sta 6+00, Road "B" and Road "C'', ae ~:;hown on Attachment 1. All the road\'ray sections were cut and/or filled to approximately 2 feet below the designed finish grades with the exception of the west half of Rpad "B". The finish subgrade elevations within the roadway sectioils are subject to change pending the approval of the final pavement design recommendations by the City and County of Honolulu. Final design recommendations for appropriate roadway s.ections will be submitted to both the City and CountY of Honolulu and Kacor Real.ty upon the completion of our additional field and/or laboratory soil testing. A soil sample of the subgrade material was obtained fran within the Road "A" alignment by our engineer for l,aboratory testing to develop addi.tional design parameters for Road "A" between Sta 0+00 and Sta 6+00, Road "B", and Road "C" ~ This is required by the City and County to verify that the soil . conditions are similar in characteristics to that used for the pavement design shown on the construction plans. If the soil characteristics should differ, appropriate pavement design recommendations would be ~ade.
To date, the earthwork constru,ction for Road "A" has involved the cutting of the roadway alignment from Sta 0+00 to Sta 6+00 to within ~ feet below the finish paveD!ent grade.. No fill placement was involved within this section.
The earthwo;rk construction for the Road "B" sec~ion consisted of the construction of fill on the western half and excavation of soil on the eastern half as indicated on the Plot Plan. The subgrade within the eastern half was proof rolled prior to the placement of fill material. · One lift of on-site clayey silt material was completed to at least 90 percent of the maximum dry density during this period. A second lift of fill was placed but inclement weather has hindered the .. completion of this lift. The fill was generally constructed to within 1 to 4 feet from the finish subgrade. The roadway section on the eastern half was cut to approximately 2 feet below the finish pavement grade. Proof rolling of the subgJ;ade was not performed during this period.
The Road "C" section was also cut to approximately 2 feet below the finish pavement grade. Proof rolling of the subgrade remained to be performed.
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Kacor Real.ty, Inc. May 28, 1981 Page Four
RESIDENTIAL LOTS
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Subsequent to the clearing and grubbing activities and the stripping of the spoil material, the earthwork construction activities within the residential lots was started on April 7, 1981 and consisted of construction of fills and the excavation of cut within the southern section of the site as shown on Attachment l·
During this period, structural fill was constructed within Lot Nos. 1, 2, 5, 6, and 7. Prior to the fill placeme:nt, each lot was proof rolled with a Tempo Rp-48 sheepsfoot roller. A soft spot was encountered during the pr.oofrolling of Lot No. 1 and the unsuitable material was removed. The unsuitable material consisted of dark gray silty clay with organics. The excavation resulting from the temoval of the unsuitable material was approximately 2 feet deep, 18 feet wide, .and 24 feet long. On-site clayey silt I!lated.al was used to construct the replacement fill and structural fill within the excavation and lot ateas. Each 6-inch compacted lift was constructed to at least 90 percent relative compaction. The fill within Lot Nos. 1, 2, and. 7 was generally completed to within 2 feet below the finish subgrade. However, approxittl.a:tely 4 feet of fill remains to be. constructed in Lot Nos. s and 6.
The areas encompassing Lot Nos. 3, 4, and 8 through l3 were excavated to within approximately 1 foot of the finish subgtade elevation. The excavated material was used to construct the adjacent fill areas.
SURCHARGE
The .Placement of the surcharge within. Lot Nos. 35, 36, 37, 38, and the extreme northern end of Road "A", was accomplished between February 10 and Mcirch 1, 1981. Two settlement gauges were placed within the surcharge area by our engineer prior to the surcharge placement. The location of each gauge is shown on Attachment 1. The gauges were monitored by personnel from our office and Settiement-Time Plots have been gen~rated and accompany this letter, Attachments 4.1 and 4.2.
Based on.the settlement gauge readings recorded as of week ending May 8, 1981, we believe that the settlement due to primary consolidation has been completed. We anticipate that remQval of the surcharge now would result in a residual, lol}g-terlil settlement of less than 0.5 inches in response to loadin9 imposed by structural fill to be placed after removal of surcharge.
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Kacor Realty, Inc. May 28, 1~81 Page Five
Dames & Moore ~~··
If you have any questions regarding the content of this letter, please contact us.
Yours very tr~ly,
DAME:S & M()()RE
D~"L., Damon R. Runyan Associate
DRR:JCS:GYY:CDY3786-045(0903B) (One copy submitted)
Attachments 1 . - Plot Plan 2 - Summary of Field Density Tests 3 - Compaction Test Data 4.1 - Settlement-Time Plot: Gauge No. 1 4 •. 2 - Settlement-Time .Plot: Gauge No. 2
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i14410th Avenue, Suite 200 Honolulu, Hawaii 96816 · (808) 735-3585
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Dames & Moore -- Telex: 634100 Cable address: DAMEMORE
KACOR Realty, Inc. 7210 ~alanianaole Highway Honolulu, Hawaii 96825
Attention: Mr. Mike Morita
Gentlemen:
Progress Letter 2 Construction Inspection
October 28, 1981
May 9 through September 18, 1981 Marina lO•B Subdivision Hawaii Kai, Oahu, Hawaii
This letter summarizes our geotechnical inspect;.ion activities for the construction of the Marina 10-B subdivision during the period of May 9 through September 18, 1981. Our services during this period were_ generally rendered on a part-time on-call pa,sis in accordance with our proposal dated August 14, 1980 and our letter titled "Revision in Proposed .Scope of Services" dated April 21, 1981. During the period of June 2 through September 2, 1981, the contractor's earthwOrk construction activities were very minin$1 and only four site visits were performed.
GENERAL
Construction activities gilring this period generally consisted of the cont:i.r:tued removal of stockpiled dredged spoil material and boulders, excavation of cut areas, construction of fill, and remova). of the surcharge at the north end of the site. The locations of these construction activities are delineated on the Plot Plan; Attachment 1.
During this period, a total ·of 76 field density tests were performed within the backfill and fill areas shown on tbe Plot Plan. Tabulations of the field density tests for the pet"iod of May 9 through September 18, 1981 are presented on the Summary of Field Density Tests, Attachment 2. Each field density test is referenced as a percent of the ma~imum dry density established by ASTM D 1557-78. Two additional compaction cilrves were developed _for the on-site brown-gray clayey Silt and brown silty sand materials. The COJOpaction curve for each material is· shown on Attachments 3.1 and 3.2.
Surcharge monitoring was coJIIPleted during this period. Results are discussed in the last section of this letter.
e KACOR Realty, Inc. October 28, 1981 Page .Two
SITE PREPARATION
Dames & Moore ~
The si~ preparation generally consisted of the continued removal of the stockpiled ciredged spoil material and boulders within the northern section of the site. The rnajor·ity of the dredged spoil ~as removed from the site. However, one stockpile of dredged spoil remained to be removed from Lots 35 and 37 at the end of the period. Several stockpiles of boulders also remained to be remsved from the site at the end of the period. These stockpiles were generally located within .Lots 16, 17, 31; and 32.
ROADWAYS
The earthwork construc.tion for the roadway areas generally consisted of the continued excavation for the remaining northern section of Road "A" from sta. 6+00 through Sta 18+62, and the construction of fill for Rsad "B~ from Sta 0+00 to Sta 2+00, as shown on .Attachment 1. The remaining northern section of Road "A" was excavated ts approximately 2 feet below the design finish grade. However, the proofrolling of the entire Road "A" subgrade area remained to be completed.
e The earthwork COnstruction for Road "B" from Sta 0+00 througb Sta 2+00 consisted of the completion of the fill construction. ',l'he remaining 1 to
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4 feet of fill was generally completed to the finish subgrade elevation. Each 6-inch lift of on..-site clayey silt material was inspected by one of our engineers and compacted to at least 90 percent of the maximum dry density.
Proofrolling of the roadway subgrade area fot Road "B" from Sta 2+00 to Sta 3+53 and Road "C" fr()m Sta 0+00 ·to Sta 1+93 remained to be completed. We recommend that the road subgrade be proofrolled and inspected just prior to the"·piacement of the subbase layer. · ·
Following a site Jllfi!eting on September 23, 1981 with Mr. John Higham, we were informed that.the inspection of the remaining roadway earthwork construction would be performed by the City and County of Honolulu, and therefore, our inspection services would .not be required any .further.
During t;his period, two Letters for Record, dated June 1, and September 18, 1981, were submitted to tbe City and County of Honolulu for the final pavement design. The final pavement design recommendations for Road "A" from Sta 0+00 to Sta 6+00, Road "B" and Road "c" were approved. The final pavement design section consists of 2 inches of asphalt concrete, 6 inche~:; Of base course with a minimum CBR of 85, and 12 inches of subbase with a minimum CBR of 20 meeting City and County of Honolulu select borrow requirements.
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KACOR Realty, Inc. October 28, 1981 Page Three
RESIDENTIAL LOTS
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The earthwork construction for the residential lots consisted of the excavation o! cut areas within the majority of the site, and the construction of fill within the southern and cen'tral section, as shown on Attachment 1.
Following the removal of the stockpiles of dredged spoil material and boulders, the cut areas for the remaining residential lots were generally excavated to the finish subgrade elevation. Each lot was then proofrolled by a sheepsfoot roller £or a brie.f period to detect soft areas within each residential lot. During the proofrolling, soft soil was encountered within the southwestern section of Lot 15. Soft dark brown silty clay with basalt boulders was encountered within an excavation approximately 25 feet by 25 feet in plan dimension. The e;ccavation was completed to a depth of approximately 5 feet below the finish subgrade elevation. Highly weathered tuff was encountered at the bottom of the excavation. The bottom of the excavation was proofrolled and visually inspected by one of our engineers. The excavation was then backfilled with on-site silty sand material in 6-inch compacted lifts. Each lift was compacted to at least 90 percent. The backfill was generally completed to the finish subgrade elevation.
Soft material was also encountered within tot 35. The soft material was believed to be remnant dredged spoil as a result of the Marina 10-B wall ceinstruction. The excavation was generally completed to a depth of 3 feet below the finish subgrade elevation. FOllowing the removal of the soft material, the bottom of the excavation was proofrol;Led and visually inspected by our engineer. One 6-inch compacted lift of on-site clayey silt material was constructed within the excavation section. The lift was compac:ted to least 90 percent of the maximum dry density. ~pproximately 2.5 feet of fill remained to be constructed. ·
The top 6 inches of the subgrade within the cut are(!s from ,tpts 3 through 30, with the exception of Lots 16 and 17 was compacted to at least 90 percent of the maximum dry density. The surface material for the cut areas in Lots 16, 17, ·and 31 thi:ough 64 remained to be compacted to 90 percent.
The con~truction of fill was generally limited to Lots 1 through 7, Lots 22 through 28, and Lots 43 through 54, as shown on Attachment 1. Approxi- mately 1 to 4 feet of fill was constructed within Lots 1, 2, 5, 6, and 7. Approximately 1 foot of fill was constructed within the east side of Lots 22 through 28. The fill was constructed in approx.imately 6..-inch compacted lifts of on-site material. Each 6-inch compacted lift of on-site ClCI.Y silt material was compacted to at least 90 percent of the maximum dry density •. Tile fill was generally constructed to the fini!'>h subgrade elevation.
Fill construction was also performed within Lots 43 through 54. Following the proofrolling of the lots, approximately 2 feet of remnant dredged spoil material was. removed ftoJil the west half of Lots 49, SO, and 51. The excavated
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KACOR.Realty, Inc. October 28, 1981 Page Four
Dames & Moore ~t
areas were then proofrolled and visually inspected by one of out engineers. Approximately 1.5 .fee.t of fill was constructed within Lots 43 through 54. Each 6-inch compacted lift of on .... site material was compacted to at least 90 percent. The fill an~a \lias· generally completed to within 6 inches of the finish subgrage elevation.
Approximately 1.5 feet of fill,. remained to be constructed within the west section of Lots 60, 61, and 62.
SURCHARGE
During this period, the surcharge material within :r.ot.s 35, 36, 37, 38, and the extreme north end of Road "A" was re1110ved. The final set of settlement gauge readings, which was performed on June 4, 1981, indicated an apparent incremental settle:ment of 0.02 feet within the surcharge area. The total apparent settlement was on the order of 0.42 feet. In our Progress Letter No. 1, qated May 28, 1981, it was stated that we believed the settlement due to primary consolidation had beeo completed. Consequently, KACOR Realty advised the contractor to re:move the surcharge material. ·The loose surcharge material was removed to approximately the finish subgraqe elevation within the area. However, during the construction of the surcharge, the preconstruction grade was approximately 2 feet lower in elevation than the finish subgrade. Up to 2 feet of loose material remained to be removed from the area shown on Attachment 1.
-oOo-
If you have any questions regarding the content of this letter, please contact us.
DRR:GYY: ljc03786-0.45 (1140B) (One copy submitted) ·
Attachment: 1 - Plot Plan
Yours very truly,
DAMES & MOORE
D(J>. &"-7 e_~ Damon R. Runyan . · () Associate
2 - Summary of Field Density Tests, May 9 through September re, 1981
3.1 - Compaction Test Data (Brown to Gray Clayey Silt) 3.2 - Cqmpaction Test Data (Brown Silty Sand)
.. " . _,
();.JNER \oi::.A.C::.,o.e.. f. 6-e. L-TY jo-)~ JOB· NO. 0'3., 8'.- OJ-I ~ SlMvlARY OF" fiELD DENSITY TESTS
JOB f:NGI NE.E:R ~. MAY 9 THROUGH SEPTEMBER 18~ 1981 '(,......,.~::..~6.7~ PAGE l OF" ::3
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ATHC Ht<E NT 2
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MAY a THROUGI-l 18. 1081 J()B ENGINEER e::.. y .... ._~c.4~-7..:::. P:.GE z_ OF ..3
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ATT ACHf'-tNT 2
'-· ()..JNER · KA.c.o li:::. rc::e ... &..-ry l~c.. J0:3- NO. o:s7S'-- o._, !l
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e MAY 9 THROUGH SE_PTEMBE_R 18,_ 1981 JOB ENGINEER ~. "f-..:"~A...,....,. P:.GE ..3 OF .3 ··-·
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ATTf,CH~tNT 2
·v f; _ _/ e e DRAWN BY .{L- DATE 1{!-J,' ·f I -REVISIONS
e .C~ECKED BY-----------
Fl LE ~~1:;-( ·o-f.::: BY DAT-E-------
TEST PH NOT AVMLABLE
SAMPLE NO. __ 2 ___ _
DEPTH _NOT AVAILABLE
ELEVATION 7 + FEET
SOIL TYPE BROWN TO GRAY CLAYEY SjLT
--~·--------------
LOCATION RoAD "A" STA. 1+00
H~RL11.1-_l0~~--S..IJJ;l __ (?_I_YJ_5.J.J)_N __
HAy-JAil KAI. OAHU, HAWAII
OPTIMUM MOISTURE CONTENT
2~. ') %
MAXIMUM DRY DENSITY
09 PC·F ---.------- ... --------2 --------·-------
METHOD OF COMPACTION
ASTM. D I 557 _":_lfi __ ~.E.!.!-.!9.9 _ _!:_
l> a -cf• ,.
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M " ~ I , __ /; 8
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MOISTURE CONTENT IN °/0 ·OF DRY WEIGHT
15 20 25 30 35 40 45 50 12Qr---------~r---------~r---------~r-~~------~----------r-----------r-----------,
110
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VOIDS CURVE
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COMPACTION TEST DATA
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LOCATION Lor 19 M.~RI NA JO-~. S~sot VI s 1 or .. HAw A 1 • K~ • . QAt'L!. HA"'A 1 1 .. \
OPTIMUM .MOISTURE CONTENT 17 .o% I MAXIMUM DRY· DENSITY-~ . ' 10::- PC( ' I M~THOD OF COMPACTION ASTM 0 ISF ":. .. ~~· .t·TTH.Ol> c I
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COMPACTION TEST DATA
DAMES 8 liii!IIOORE
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Dames & Moore ~i< ~~~
114410th Avenue, Suite 200 Honoh!lu, Hawaii 96816 (808) 735-3585 Telex: 634100 Cable address: DAMEMORE
March 9, ],.98 2
KACOR Realty, Inc. 7120 Kalanianaole aighway Honolulu, Haw.;lii 96825
Attention: Mr. Mike Morita
Gentlemen:
Progress Letter 3: Final Letter Construction Inspection September 19, 1981 through March 2, 1982 Marina 10-B Subdivision · Hawaii Kai, Oahu, Hawaii_ _
Tl:lis letter swmnarizes our final,. geotechnical inspection activities for the Construction of the Marina iO-B subdivision during the period of september 19, 1981 through March 2, 1982. Our services during this period were generally r.endered on a part-ti_me on ... call basis in accordance with our proposal dated August 14, 1980 and our letters dated April 21, 1981 and October 8, 1981 which outlined our revised scope of services. During the periods of November 14, 1981 through December 1, 1981 anq December 10, 1981 through Febr\,lary 1, 1982, .no significant eartl:lwork eonstruction activity to be inspected by us was performed at the site. Our services during the period of December 2 1 1981 througl:l March 2, 1982 were limited to eight site visits to complete our inspection services.
GENERAL
The construction activities during this period generally consisted of the removal of the remaining stockpiled dredged spoil material and boulders, construction of areal fill, excavation o:f thehousepad areas, and the construction of replacement fill within- the housepad excavations. The locations of these construction activities are delineated on Plot Plan A and Plot Plan B, Attachments 1.1 and 1.2.
During this perie>Q, a total of 244 field density tests were performed within the backfill and fill areas as shown on the Plot Plans. Tabulations of the field density tests for the period of September 19, 1981. through March 2, 1982 are presented on the Surgrnary of Field Density Tests, Attachment 2. Each field density test is referenced as a percentage of the maximum dry density established by ASTM D 1557-78.
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KACOR Realty, Inc. March 9, 1982 Page Two
SITE PREP,ARATION
·Dames & Moore ~~-
The site preparation gener~lly consisted of the removal of the stockpiled dredged spoil material and 2-foot layer of loose fill material within the old surcharge area of Lots 35 through 37. The remaining stockpiled boulders within Lots 16, 17, 31, and 32 were also removed from the project site.
R01U)WAYS
During this period our letter for record dated December 16, 1981 was submitted to the City and County of Honolulu for the Unal pavement design for the J:{c:n_.,aii Kai Drive Extension from Sta 25+50 to Sta 27+50. The final pcrvement design recommendations were approved by City and County letter dated December 30, 1981. Pavelilent design consisted of 2 inches of asphalt concrete and 6 inches of base course with a minimum ~R of 85. A 12 .... inch layer of subb~se with minimum CBR of 20 and meeting City and County of Honolulu's select borrow requirements was recommended for the 18-inch drainUne backfill area within the roadway section.
As.explained in our Progress Letter 2, we performed no further inspection of earthwork for tbe project's roadways.
RESIDENTIAL LOTS
The earthwork construction for the residential lots consisted of the continued construction of fill within the lots located along the edge of the Marina, plus excavation of the housepads and construction of re.placement fill for each housepad, as shown on Attachments 1.1 and 1.2.
Following the removal of the remaining stockpile of aredged spoil and boulders, the finished subgrade surface witbin the cut areas of Lots 16, 17, and 31 through 64 were compacted to at least 90 percent.
The re111ainirig 2. 5 feet of .on-site clayey s.i,.l t £'111· was constructed to the finish subgrade elevation within the excavation at Lot 35. The fill was generally constructed in 6-inch compacted lifts and inspected by our personnel.
Thefill construction within Lots 43 through 54 was also completed to the finish subgr.ade elevation with the placement of a final 6-inch compacted lift of on-site clayey silt material. The lift was compacted to at least 90 percent. · ·
Foiiowing the completion of the 111ajority of the rough grading to the finish subgrade elevation, the proposed housepad area for each lot was excavated to a depth of approximately 2 feet below the finish subgrade
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KACOR Realty, Inc. Match 9, 1982 . Page Three
Dames & Moore t::~
elevation to remove the expan~ive on-site material. Imported non-expansive brown cinder sand ttJaterial was used for replaceme_nt fill. The driveway areas for Lots 1 through 35 were also excavated for replacement fill. Following the completic:>n of the housepad excavation, the bottom of the excavation was proofrolled with a sheepsfoot tc:>ller to detect soft spots and visually inspected by one of our engineers. Approximately 8-inch compacted lifts of brown cinder sand material were placed and compacted to at ],.east 90 percent. The replacement fill for.each lot was generally completed to the finish subgtade elevation.
During the excavation of the housepad area at Lot. 33, tan cemented coralline sanca was encountered at the southwest carrier. Approximately 360 square feet of area was found to be Underlain by cemented coralline sand at a depth of approximately 0.7 feet below the finished subgrade elevation. We recommended tbat the coralline material not be removed within this area. The remainiJJ.g housepad area was excavated to 2 feet below the finish subgrade e:J..evation within the clayey silt material.
Upon the request of KACOR Realty, a supplementary investigation was performed to getermine the degree of expansiveness of the soil between Lots 18 through 33. During the excavation of the cut slope along the western boundary of the :tots, tan coralline sand and gray-btc:>wn cinder sand were encountered along the cutslope. The results of our supplementary investigation as documenteq in out letter dated November 3, 1981 i_ndlcated that the soils encountered within the housepad areas generally possessed the expansive characteristics of those samples previously tested dur,ing the geotechnical investigation and on-going construction. The on-site non-expansive sand mat~ rials encountered along the cut slope· were generally found to be Hmi ted to within 20 feet from the toe of the slope and not within the housepad areas.
The surcharge area within Lots 35, 36, and 37 was constructed to the finished subgrade elevation with the imported sand material. Approximately 2 feet of loose on-site material, belc.M the finish subgrade elevation, was removed from the area and the bottom of· the excavation proofrolled with a sheepsfoot roll~r prior to the construction of the replacement fill. To expedite construction, the contractor used the imported sand material for fill within the limits of the excavation.
During the construction of the hc:>usepad replacement fill of Lots 60, 61, and 62, the remaining 1.5 feet of fill along the west section was completed to the finished subgrade elevation with the placement of the imported brown cinder sand material. · ·
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KACOR Realty, Inc. March 9, 1982 Page Four
Based on our observatiofi$ and results ofour field density tests, it is our opinion that the earthwork construction fot the areas documented by our correspondence to you for t;he Marina 10-.B subdivision was performed in gener.al accordance with the project speci:Hca tions and our recommendations.
This concludes out geotechnical inspection and col)sultation services for this project. We appreciate the opportunity to per~ortn this assignment for you. Should you have any ql1estions regarding the content of this letter, please contact us.
DRR:GYY:ljc03786-045(2727A)
Yours very truly,
DAMES & MOO~
D~e Damon R. Runyan Associate '
Attachments: 1.1 - Plot Plan A, Mass Excavation and Fill, KACOR Marina 10-B 1.2 ... Plot Plan B, Housepad Replacement F~li, KACOR Marina 10-B 2 - summary of Field Density Tests, September 19, 1981 through
March 2, 1982 (10 Pages)
·.
e · ~UI'v1tJ.Af''' OF FIELD DENS IT':' TESTS
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_JOB ENGINEER j0~ ~""'{\\Pt PAGE 2_ . OF tO
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... ()..JNER ~~ ~E!=\'-T"'J ItJc... JOB NO. 027Bb·O"i5
~uMMAP'' OF FIELD DENS IT':' TESTS ..... -
JOB ENGINEER JoN ~\(..'iTTr\ PAGE _s · OF 10
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TE3TI DATE TEST LOCATION ELEV. ('f ~1AX.
u..i TEST RE~~~RKS IU -~ . >-
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D_a.-••e-c»o ... -l\TTACm!ENT 2
.• ONNER KAcot<. i<EAJ...T~ ~ . JOB NO.Q37B6-0Lf5
c UM~J,AF?'' OF FIELD DENSITY TESTS . -
JOB ENGINEER~N-~1TA P:.GE '-I or 10
e - .
.TEST DATE TEST LOCATION ELEV. cr1 t--1AX. w
TEST FE'-~-"RKS /U 0::: . >-
NO. FT. COMP. DRY - ~ DRY X 1-...J I- <>--
REQ'D . DENSITY ..J (f)
DENSITY ::;;:: 0::: (0
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DAMIIIIII&MOoR• •
7\TTACH~lENT :?
... -- --. ·-
O..JNER Kk:oR ~\'\ :roc • JOB NO. Q3?8b- 0'15' cUMMAR'' OF FIELD DENSITY TESTS
-·- -
JOB ENGINEER jd\l ~'(\\~ PAG[ S or 10
e ----
DATE TEST LOCATION ELEV. (11 MAX. w
TEST P[1-.1ARKS TEST /D 0::: . r-~-iO. FT. C0~1P. DRY =:>
DRY X ...... .;..JI- <>--
REQ'D DENSITY .;..! rfl
DENSITY .:;,:Q::.(f) - ;...;"'"'- oz
P .C. F. u.o P.c.r. V, w
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--
Jof~ Lor ss '<E-'I<:.I...~e:D-20\ e.b qo l05 lb Cf3 BB - e>K.
2o2.. Jl . loT 5\ e.\ co lo5 t5 qb ql ~e:~rOF 2co•e>\(.
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DA-aa..a _ckJ .. a
ATTACH!I1ENT :?
•. .. ()..JN[R KA~ RCA\..\'f INc:.. JOB NO. 037~-b -oys-
~UMMAP'' OF FIELD DENSIT':' TESTS JOB ENGINEER ~0~ S\L"\\1~
I
P:.GE b · o• 10 I I --e --
PD',.:.RKS I T~ST. DATE TEST LOCATION ELEV. cr f'.1AX. w
TEST ;0 (Y . >-:;)_ X 1- I
NO. FT. COMP. DRY ..JI- DRY <>-- I
REQ'D DENSITY ..J (/) - DENSITY ::: 0:::. (~"")
--- '<""- ·e:z P.C.F.
LL...O P .C. F.
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22.7 /0}1sjro\ Lo\ 2q Jo.'-{ qo 106 18 gq qt.{ I
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2.2'l 10/lb(Bl loT 4'1 ?.q qo 106 ~~ qq Cf'-1 . - -
2.~ II lo-r ~7 B.l 9a lOS ll-i qq Cf4 2~l " Lo\ 37 ?.'i 90 \OS lb 93 89_ 2.~2.
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DA-II.Iil 8 -OoiWB
ATTl\CHHENT ~
~ '.
Ov-JNER ~ ~\.l'l ~C... JOB NO. 03786-0L.(S ~UHMAF:'' OF FIELD DENSITY TESTS
JOB ENGINEER j~ SV..'iT\JL\ . PAGE 7 OF I 0
e -
TEST DATE TEST LOC AT I 0!~ E.LEV. o1 HAX. w
TEST REM!>RKS /J 0::: • >-
~:o. FT. COMP. DRY ::> DRY >< ~ _, ~ <>--
R[Q•D DENSITY ...:...~ c.n
DENSITY :L 0::: ({)
-·-\'\''- oz P .C .F.
L,._Q P,C,F,
v-~ w ::a. 0
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253 lo{~l LoT 2.Y 1~.2 CjO 10'5 ' ItO qb q, -
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255 ,, Lc:>T 2b J2.S qo los J9 Cib q(
2'5b lf}Ck}BJ LoT 3'-1 u.o qo IDS lb (DC( /DO . . ..
257 II loT ..3.3 lf,3 C}O los lb qq Cf4 -
2SS If loT 62. tJ,2_ CfD los 1'1 CJ7 _q~
2.Sq lf/r:R/Bt -- LoT 3\ 1/~ qo 105 1'1 7€> q3 ..
2b0 II Lo\ 30 l(.'L 90 --
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2b2. II Lo\29 u.'Q t{D los 15 lq? I
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..
DAM&IS B M ....
ATTACHHENT 2
• ~ . - .
O .. JNER ~ ~\'J.INC.. JOB NO.C(3lJ'Cb-0'-{5 i
e ~.UMt<AF'': OF Fl ELD DENSITY TESTS
... . ·
J09 ENGINEER G. 'IAfJ'I.N:..-,If[A. 6 PAGE OF 10 1
. TE~T ::>ATE TEST LOCATION ELEV. ,,
~1AX • w
TEST R[f-~:..RKS I /') a: . >-:) X .....
~·10. FT. COMP. DRY ..JI- DRY <>--!
REQ' D DENSITY ..J Cf)
DENSITY z 0::: (/)
i ~-~s::.. o:z: u..o V:. w I
P.C .F. ::2:. P .C .F. p
12/02}81 LOT ro 1 J.o '\D lOS IOL\ 99 I
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i
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286 1/ L~T 1'2> 1?.8 qo JDS IC( IDS qq RE.Ts.sr e~. i?b-e>~ '
2!07 II l.Dt2. 19..9 c,o 105 1 I lll IDO !
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2.9~ II loT 1'5 18.0 qo 105 l2.. CJ9 - -~~ . -
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21b. II Lo""t 17 12·5 cto lOS 22.. cts 90 I
2Cf7 II Lo-r lB 1a.s tiO 105 17 . lD3 qs '
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---
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...
DAM•BBMOa•a'
i'\TTACHt-lENT 2
. -• ONNER ~ ~'i Tu::-. JOB NO. t/.3796-. 0'-/S
~Utv1~J.AR'' OF FI~LD DENSITY TESTS JOB ENGINEER w.~~\ PAGE q OF )0
e TE3T I DATE
..
TEST LOCATION ELEV. 1S f\.1AX. w
TEST R[tv1!.RK~ C::· . >-
FT. COMP. DRY ::::> DRY X ...... no. .-II- <>--REQ'D DENSITY
~(/') DENSITY
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32.L/ I( Lo\ 32... lO[] CjD lOS"" IB }00 95 -
3ZS 02/M"/BZ Lor I Z2,S 90 /OS 21.> Jo(p 100 --
32~ " Lor 2 2C>.o 90 /OS liP /02 97 -
3:Z7 ,,
Lor 3 l3.l 90 /OS 17 /(){p /00 . -
3Z8 ,,
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329 Jl i...o1 35"" 6.7 90 lOS _2() /Dl 90 ..
330 OzjJojBZ LoT I 25.S 90 /OS 17 1/Z /00 ...
Sit•-•• a -oo•• ATTACHr-lEI'\T 2
' .
ONNER KAcoe i?eAcry 1
T_, .. u;. .. JOB,NO.t.J37Bb-ODS SUMMARY OF Fl ELD DENSITY TESTS
JOB ENG I NEER6A~V YAMAGATA PAGE /D OF 10 . ' ...
e TEST DATE TEST LOCATION ELEV. % f\1AX. w
TEST REMARKS c: . >-FT. COMP. DRY =:> DRY X 1-
NO. ...Jt- <:>-.,.,..
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DENSITY ~O::CJ)
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u..o P .C .F.
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332. ,,
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333 I' Lct-4 J{), 2.. 90 lOS 20 /0_3 98 ..
33~ ,. l.cy 5.S 8.~. 90 /OS' 20 lt>S /~{) ..
335" 03/1!2/82 Lor .SS 9.~ 90 lOS /ft:J 10.2 97
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) .337 .. Lor2 zo.z 90 I()S 17 107 lbO
338 ,.
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ATTACH?-1ENT 2
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201111!'21-0411
TO: Kaoor Realty, Inc. 7120 Kalanianaole Highway. Honolulu, Hawaii 96825.
Gentlemen a
Re: MARINA 10-B, '1'~~~ ~ 3~'~08a 13
~
We are sending you herewith _X2._ __ _
No. of Copies De$criptiori
1 .. ... n ...... ..... ~'D--f .... ~ """"' ~ 1 .,_.,.
. For:
r~>
~ Your information and use
Review and comment
As requested
Remarks:
. ..
Approval
Si'gnature
Date: September a, 19Ba
Under separate cover.· --~,..---
The dateof ow: approval, Septemj:)er 1, 1982, is tbecloainc.Jd&te of the permit. Tbe bond. filed with the City :for the grading work ahall remain in effect f.or a period of one year after the closing date 1 therefore, it will be .returned to Y'!-UAn September 1, 1983.
__ tCSABL J. CHUM Fo-e ; Director and Chief Engineer
.JI.apt.o Attach. CCI V'l'N-Pacifio
Federal Insurance Company beer ..91(rvice Encdneer w/oriqinal
PERMIT CLOSED
' PERMIT NO. lt 5 (~·
DEPARTMENT OF PUBLIC WORKS CITY AND COUNTY OF H9NOLULU-
c~- /g2 XOo~ DEPT 24- ENG 12
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To the Director and Chief Engineer De,
1
ment of Public _w_ orks APPLICATION AND PERMIT FOR._
GRADING
.. ~ .. _,:..: ~.. : ~l._l:_ :.. : ~\."":')": .... : .. ~.:~1·.!-J·-.) \
f<CT~= :J32621 C~i i:?~50 C" d County of Honolulu
Application is hereby made to do grading work in conformity with Chapter 23, R. 0. 1978, As Amended, as follows:
TAX MAP KE)" ENG. SOILS REPORT ..
ZONE SEC. PLAT PAR_. LOT DATE f'ILED: '
3 q 08 13
Located ,at M a ;l Y\ tL -\ 0 \?J \ tv'\ a t-tY\ lX.llAlL
Lot 'Area _ . -: ··· Sq. Ft. I 1-{- 1 )_ Acres
Fill Material ____________ _
EST. QUANTITY PERMIT FEE FEE RECEIVED
EXCAV;, C_U.YD. .
q •-a€Gt'rl~ onl4 '7 50 ·~~ J FILL CU.tD. I • BY: (.;/P ..
D,ATE: .3- t 2 -l3Z
¢_ Temporary Erosion Control
Procedures on File Lt..j'(t, r· ,.,~ ')...'(' ~Bond on file ~6f' (lb 1.4 (r-~~L IYls,lo} . I
_N'[ Dept. of Public Works to Inspect , Description of Soil · • \ . 1 · · · ·
Existing Ground 4'Ya~'/t'Yl':) D)) Hq 0 Bldg. Dept. to Inspect
Estimated Starting Date M Q rcA-y . . · .. ·._· .' 19 ~ '2._ Estimated Completion Date')( June 15 19 R_
Remarks/Purpose of W9rk:' GlY2\-?<zfy,OJ crukL)' ':P~~tcA Jv,q- of 5 t+~ . -;·C'crM+i.Yi utt±1n, G I - .- - ·. '-
-'l.e-:M.---rl Co· ·\nV. Address f>. ~ • Bo'f 2.s; 00] Phone31~--:23·3l
Engineer V l N - _ P AC-l ~t <:..;... Address t \ (o 4: & l5l-\-Cf? ~~ l ·# q 0 4· Phone ~ 2l- ':;i :;- (
ConJractor OA-\-k) CoNU(li)Cj) orJ Address 3 0 fj "i Ll A L.e-NA S--r. . Phone <3'3 to -2~S'l Date of Applicati6n -1- March t1. _ 19.82 Permittee i.2lt~~'~ '?J1, ?'J1..ty~:ta_ Application Reviewed By Date -------------------
sERVICE ENGINEER . . . . 19_~
----------------------------------------------·····------------~------------------------~--~---~~-----~-------~---------------------------· To the Applicant:
Permission is hereby given to do the above work according to the conditions hereon and according to the approved plans and specifications pertaining thereto, subject to c()mpliance with Chapter 23, R. 0. 1978, As Amended._
Remarks:~----------------~-----------~--------------------~~~----~--~~~~-----------
Date March t'L
Contrac1or shall notify this office two working days before commencing any work and arrange for necessary inspection a I services.
1982 Issued By:
#,~ GINEER. DEP.T OF PUBLIC WORKS
THIS PERMIT WILL EXPIRE UNLESS. WORK IS STARTED WITHIN 90 DAYS FROM DATE·OF ISSUE; OR IF WORK IS SUSPENDeD OR ABANDONED FOR 60 DAYS. OR MORE AFTER WORK IS BEGUN; OR ONE YEAR FROM DATE OF ISSUE
--------------------------····-··············~--~-----------~-----~-~--~------------------------------··--------···--······-··-··--··--·-~ ,aL hereby certify .that all work as requested abov7 h_a~ been completed in conformity with Chapter 23, R. 0. 1978, As Amended a. accordance w1th the approved plans and specJficatJons.
Date ~· /$~ 19i't Pe•miHee ~~;?J. ?n~ Date ~A.A R~ \_, 19 ec. Approved By: ~C.:;(. ia.<L Final Soils Report Date Filed ~ /) .. J~/~ ')....... 1·~---
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· ·· ,If'"' l.';!:·,·~vr~ 1 w 4Ut;(l" . ·~,;~*()Tlt'IC INC.
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1164 Bishop Street, Suite 906 Honolulu, Hawaii 96813
2t; f}f '8(. Telephone: (808) 521-5651
August 25, 1982
Mr. Michael Chun Director and Chief Engineer Department of Public Works City and County of Honolulu Honolulu, Hawaii 96813
Attention: Division of Engineering
Subject: Marina lOB TMK: 3-9-08:13(por)
Gentlemen:
This is to certify that the grading for the subject project has been completed in accordance with the lines and grades shown on the attached as-built plans. Please note that the slope bench in lots 18 to 23 shown on the original grading plans was deleted. The as-built drawings also do not include the minor grading required for the house pads and individual lot swales.
We are also transmitting at this time a copy of the final soils report prepared by Dames and Moore consisting of the following:
a. Dames and Moore Letter No. 1 dated 5/28/81 b. Dames and Moore Letter No. 2 dated 10/28/81 c. Dames and Moore Letter No. 3 dated 3/9/82
We trust that this meets with your satisfaction and approval. If there are any additional questions, please feel free to call us at any time.
Very truly yours,
~~ Cli:OrdArakawa
CA:db Enclosures
Project Manager
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