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Home My WebLink AboutBIRCHWOOD SOUTH Soils Data SHEET .. OF MACHINE. USED JOHN M .LAMBE P.E. METHOD .USED SOILS LOG TOTAL DEPTH ¢~.,"-'<1' _ .... PROJECT.,~' - 0.? TIME STARTED ~"Y- 'J-'~ , FINISHED DATE ~~ VEGETATION~ DRAINAGE ~ GENERAL TOPOGRAPHY GROUND WATER DATE '-TIME DEPTH LOCATION DIAGRAM ~ NOTES · ~ O o ~ C < o -- ~S~IPTION-SOIL~ COLOR~TEXTURE~ ODOR~ GRAIN~ SHAPE, LAYERING OR ~ ~,~ ~ ~ ~ ~ ~m ~O VARVING~ ICE ~PEI BONDING OR TOUGHNESS~ DRILLING NOTES _ _ -.~~ 0 .... :7 SHEET ,,.O'F MACHINE USED JOHN M~ LAMBE P.E. METHOD USED .i,~OILS LOG TOTAL OEPTH' PROdECT~ DRAINAGE & G'ENER'<~0POGRAPHY GROUND 'WATER VEGETATION~ DATE ·TIME DEPTH LOCATION DIAGRAM ~ NOTES ~ ~ O ~ ~ < o -- ~S~IPTION- 8OIL~ COLOR,'TEXTURE~ ODOR, GRAIN~ SH~PE~'LAYERING OR m ~ ~ ~ ~ ~ ~ VARVING~ ICE ~PE~ BONDIN~ OR TOUGHNESS~ DRILLING NOTES "i SHEET / OF/' MACHINE USED JOHN M LAMBE P.E. METHOD USED' ' SOIL'S LOG TOTAL DEPTH ....... TIME STARTED ~fS-S~ FINISHED g~/~ ' DATE VEGETATION~ DRAINAGE ~ GENERAL TOPOGRAPHY GROUND WATER " DATE TIME DEPTH LOCATION DIAGRAM ~ NOTES o m ~ ~ ~ m° m~ c ~.~ o _ ~S~IPTIOH' SOIL~ COLOR~TEXTURE~ ODOR~ GRAIN~ SHAPE~ LAYERING OR m m m ~ ~ [ ~ ~ VARYING, ICE ~PE~ BONDING OR TOUGHNESS~ DRILLING NOTEB SHEET ,.O'f MACHINE USED -JOHN M LAMBE P.E. HOLE ~ METHOD USED SOILS LOG TOTAL DEPTH TIME STARTED FINISHED · ~-'~d DATE VEGETATION~ 'DRAINAGE B GENERAL TOPOGRAPHY GROUND WATER DATE TIME DEPTH LOCATION DIAGRAM ~ NOTES ~ ~ < ~ -- ~S~IPTION" SOIL~ COLOR~TEXTURE~ ODOR, ~RAIN~ SHAPE~ LAYERIN~ OR O- SHEET , O'F MACHINE.USED JOH'N M LAMBE P.E. METHOD USED SOILS LOG TOTAL DEPTH VEOETATION~'DEAINAOE ~ OENERAL TopO~APHY OROUND WATER : DATE ~ ~ ~ ~ ~ ~ ~m ~S~IPTION'; SOIL,' COLOR, TEXTURE, ODOR, GRAIN, SHAPE, LAYERING OR m = o ~ ~. ~ ~ VARVING~ ICE ~PE, BONDING OR TOUGHNESS, DRILLING NOTE~ 0 6 John M. Lambe, P.E. 7127 Old Seward Highway · Anchorage, Alaska 99502 GEOTECHNICAL ENGINEERING AND TESTING 907-349-6531 May 20, 1982 Triad Engineering. 6937 Old Seward Highway Anchorage, AK 99502 Attention: Dave Grenier Subject: Soils Investigations Birchwood South Subdivision Birchwood South Subdivision, Block 2 Gentlemen, This letter presents the results of the soils investigations of Birchwood South Subdivision and Birchwood South Subdivision, Block 2, that we performed at your request. The Birchwood South Subdivision property is located on Monastery Drive near the Old Glenn Highway. The Birchwoo~ South Subdivision, Block 2 property is located on the southwest corner of the intersection of the new Glenn Highway and South Birchwood Loop Road. Both properties are located within the N.W. 1/4 N.W. 1/4 Section 30, Township 15 N., .Range 1 W., Seward Meridian, Alaska. On May 6, 1982, we drilled 4 test borings on the Birchwood South Subdivision, Block 2 property. On May 7, 1982, we drilled 5 test borings on the Birchwood South Subdivision property. The test holes at both sites were drilled for the purpose of pro- viding preliminary soils information with which to assess the feasibility of developing on-site waste water disposal systems. Mr. John Graham, driller on our staff, performed the drilling with our Bombadier-mounted Arctic Gas Auger. Mr. Pete Chalich, geological engineer on our staff, observed the drilling, logged the borings and obtained samples. This work was requested to be performed to the minimum standards of the Department of Health and Environmental Protec- tion (DHEP). No laboratory analyses are requested. In soils which are visually classified to include more than 6% silt (soil finer than the #200 screen size), a percolation test is required to be performed in the area most likely to be developed for the absorption system. Our procedure for performing the percolation test is to drill an additional boring adjacent to the soils log to the depth intended for percolation testing. Coarse gravel is placed in the bottom of the' boring. Four-inch slotted and per- forated PVC pipe is placed Within the percolation test boring and the annular space between the boring and the pipe is backfilled with washed gravel. On the day before the percolation tests are to be performed, the percolation boring is filled with water and allowed to saturate overnight. The testing is performed accord- ing to the standards presented in the EPA publication "Onsite Waste Water Treatment and Disposal Systems," Page 41, Table 3-8. All soils are visually classified in the field according to the Unified Soils Classification System presented on Plate 12 and the Textural Classification System presented on Plate 13. Slotted 1-1/2 inch nominal standpipe was placed in the deep borings to allow for observation of free water levels after drilling. In soils with a significant silt fraction, substantial time is required to allow the free water level to stabilize. It should be noted that static free water may fluctuate seasonally and annually in response to seasonal runoff or heavy rainfall. On May 12, 1982, Ms. Stacy Kaplan, of our staff, returned to each site to perform the percolation tests and to record the water level at each of the boring sites. The results of the field investigation and percolation testing of the Birchwood South Subdivision site are presented on the standard DHEP forms attached as Plates 2 through 6. The Site Plan showing the approximate locations of the borings is presented as Plate 1. The results from Birchwood South Subdivision, Block 2 are pre- sented in a similar manner ~s Plates 8 through 11 with the Site Plan presented as Plate 7. We were requested to perform this investigation to the minimum standards required by the Department of Health and En- vironmental Protection. It should be noted that in accordance with these standards, the classifications of the soils are visual and are performed by a field engineer. These classifications are subject to change because they have not been verified by labora- tory analyses. This work was performed for the sole purpose of preliminary evaluation by the Department of Health and Environ- mental Protection of the suitability of the lots for onsite sewer system development. Any extrapolation of this data for other purposes is not within the intent of the investigation or re- quested services. We trust the foregoing is sufficient to your immediate needs and is comprehensive within its limited scope. If questions arise, or if we can be of any further service, please feel free to call. Yours truly, Pete Chalich, E.I.T. Geological Engineer Approved ~y: JoSh M. Lambe, PE. Civil Engineer 4254-E 7~~' ~ ~ ~ ~.~ ~ C~r'[~C~rE OF OWNE~H~P~,,d DED~C~r/oN .... I I~). ~ereby cert&y that I f~) hold the hereto s~d/ed property ~nterest m th~ property described hereon / [~) hereby dedicate to the Mun~c~pahty of Anchora~ all areas depicted for use as pubhc ut/hty easements. ~ ~ O~ a'l'Y" th°t°u'h'are'. Parks. and other pub/,c ar,,, shown hereon Th,re shall ~ fe~etved adlacent to the dedicated streets shown hereon, a slo~ res~rvaoon easement sufhcxent to contain cut and f~ll ~lop~s of 1.5 tewt hor~zo,,tal t:,, each I foot verOca/ (I 5to lJ ofcut of Afl for th~pu~pos~ of provldlog a,~<'l Inalnta~/~tng the I~teral support of th~ constructed struts. '- tO use Such areas ~t any Ozz~e upon prowd~n~ and m*~nta~n~ng other ~dequ~t~ ~ -- ' ~ / (~) hereby agree to lh~S p/at. and lo any ~estr~coon I .: ,,. , -;;% ' ' ~'~ ~ ,~ ~40 ~. ~¢. ' ' -. I ~-~ ~.¢ ~ . ( - ' ' ' .... ~':'~ I 3 ~. :, L / . '~:~. '.I, . 3 l'~'l,¢~:~".'~'~ ~ ' ....~ ........ - ~'r~;t, ,. ~'~ ~ t , , }. 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