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Home My WebLink AboutBIRCHWOOD ACRES Lots 1-3 S-9346 MUNICIPALITY OF ANCHORAGE ECONOMIC DEVELOPMENT AND PLANNING P.O. Box 196650 Anchorage, Alaska 99519-6650 PRELIMINARY PLAT APPLICATION OFFICE USE REC'D BY: VERIFY OWN: A. Please fill in the information requested below. Print one letter or number per block. Do not write in the shaded blocks. Vacation Code 2. Tax Identification No. NEW abbreviated legal description (T12N R2W SEC 2 LOT 45 OR SHORT SUB BLK 3 LOTS 34). I '1 / ////It 1 EXISTING abbreviated legal description (T12N R2W SEC 2 LOT 45 OR SHORT SUB BLK 3 LOTS 34) full legal on back page. Petitioner's Name (Last - First) 6. Petitioner's Representative I Address 951 East Creekside Drive #9 City Wasilla . State ~ Phone# 373-3030 Zip 99687 Address 723 West 6th Avenue City Anchorage State At~ Phone# 272-5451 Zip 99501 Petition Area 8, Proposed 9. Existing 10. Grid Number Acreage Number Number Lots Lots 11. Zone 12. B. Fee $ 350 13. Community Council I hereby certify that (I am) (I have been authorized to act for) the owner of the property described above and that I desire to subdivide it in conformance with Chapter 21 of the Anchorage Mu nicipal Code of Ordinances. I understand that payment of the basic subdivision fee is nonrefundable and is to cover the costs associated with processing this application, that it does not assure approval of the subdivision. I also understand that additional fees may be assessed if the Municipality's costs to process this application exceed the basic fee. I further understand that assigned hearing dates are tentative and may have to be postponed by Planning Staff, Platting Board, Planning Commission, or the Assembly due to administrative reasons. Date: 20-003 (Rev 6/89)MOA-24 Signature *Agents must provide written proof or authorization. C. Please check or fill in the following: 1. Comprehensive Plan -- Land Use Classification x Residential Commercial Parks/Open Space Transportation Related 2. Comprehensive Plan -- Land Use Intensity Special Study 3. Environmental Factors (if any): a. Wetland NA 1. Developable 2. Conservation 3. Preservation Marginal Land Commercial/Industrial Public Lands/Institutions Dwelling Units per Acre Alpine/Slope Affected b, Avalanche c. Floodplain d, Seismic Zone (Harding/Lawson) Please indicate below if any of these events have occurred in the last three years on the property. X Rezoning Case Number SubdivisIon Case Number Conditiona! Use Case Number 86-07]. Zoning Variance Case Number Enforcement Action For Building/Land Use Permit For Army Corp of Engineers Permit Legal descriptIon for advertising. Section Lots 10, 28, & 29 Section 18 T15N RiW Alpine/Slope Affected Industrial Special Study Checklist × 30 Copies of Plat × Reduced Copy of Plat (81/2 x 11) × Certificate to Plat 35N Fee X Topo Map 3 Copies X Soils Report 4 Copies X Aerial Photo × Housing Stock Map ~,' Zoning Map Water: X Sewer: X Private Wells Private Septic Waiver Community Well Community Sys. Public Utility Public Utility 20-003 Bact~ (Rev. 6/89)MOA-24 MUNICIPALITY OF ANCHORAGE ECONOMIC DEVELOPMENT AND PLANNING P.O. Box 196650 Anchorage, Alaska 99519-6650 PRELIMINARY PLAT APPLICATION OFFICE USE REO'D BY: VERIFY OWN: A. Please. fill in the information requested below. Print one letter or number per block. Do not write in the shaded blocks. 1. Vacation Code 2, Tax Identification No. 3. #IW abbreviated legal description (T12N R2W SEC 2 LOT 45 OR SHORT SUB BLK 3 LOTS 34). I~lol:~lsl IzJzJ31 bl~l~lcl~lddol,~l 4d~ E 4 111111111111 // / IXIITING abbreviated legal description (T12N R2W SEC 2 LOT 45 OR SHORT SUB BLK 3 LOTS 34) full legal on back page. 6. Petitioner's Representative I~. o1~1~1~1~1~1~1 I~ ~ 4~o 4-~1~:~ ~1~ II I I Address 951 East Creekside Drive t/9 Address 723 West 6th Avenue City Wasilla State AK City Anchorage State AK Phone# 373-3030 Zip 99687 Ph~; ~5~: Zip 99501 7. Petition Area 8. Proposed 9. Existing 10. Grid Number 11. Zone Acreage Number Number Lots Lots [-TTfT;:J~ bWl ~1~1 '~'~-6 12. B. Fees 350 13. Community Council I hereby certify that (I am) (I have been authorized to act for) the owner of the property described above and that I desire to subdivide it in conformance with Chapter 21 of the Anchorage Municipal Code of Ordinances. I understand that payment of the basic subdivision fee is nonrefundable and is to cover the costs associated with processing this application, that it does not assure approval of the subdivision. I also understand that additional fees may be assessed if the Municipality's costs to process this application exceed the basic fee, I further understand that assigned hearing dates are tentative and may have to be postponed by Planning Staff, Platting B°ard' Planning C°mmissi°nt °r the Assembty due t° admin'~as°ns' ,~ "! ' - s.g u.~--'- ,,/-;- - - $8991~ N~ 1( 2 1990 *Agentsrrfustprovidewrittenlrooforautl1~:~i2a.)tO~,'ll,!l Please check or fill in the following: t. Comprehensive Plan -- Land Use Classification x Residential Commercial Parks/Open Space Transportation Related 2. Comprehensive Plan -- Land Use Intensity Special Study 3. Environmental Factors (if any): a. Wetland NA 1. Developable 2. Conservation 3. Preservation Marginal Land Commercial/Industrial Public Lands/Institutions Dwelling Units per Acre Alpine/Slope Affected b. Avalanche c. Floodplain d. Seismic Zone (Harding/Lawson) Please indicate below if any of these events have occurred in the last three years on the property. Rezoning Case Number Subdivision Case Number Conditional Use Case Number 86-07]. Zoning Variance Case Number Enforcement Action For Building/Land Use Permit For Army Corp of Engineers Permit X Legal description for advertising. Section Lots 10, 28, & 29 Section 18 Ti5N RiW Alpine/Slope Affected Industrial Special Study Checklist X X X x X X X X Waiver 30 Copies of Plat Reduced Copy of Plat (~ ~~~.-~ Certificate tO Pla ~t,,,,,,.~ Topo Map3 Copies%"" __ Fee Soils Report 4 Copies ] -- Aerial Photo / Housing Stock Map/ Zoning Map / Water: [ X Private Wells Commumty Well Sewer: ~, X Private Septic Commun,ty Sys. 20-003 Back (Rev. 6/89)MOA-24 2 Public Utility Public Utility BOARD In the matter o£ ) ) Buswell Application for Natural Resource ) Extraction Permit £or Subdivision ) Development ) ) FOR THE MUNICIPALITY OF ANC~~w OF ANCHORAG~ DEPT, OF HEALTH & ENVIRONMENTAL PROTECTION Ot3T 2 '*',.:, 1990 RECEIVED Case No. 86-071 DECISION This matter came before the Anchorage Board of Adjustment on July 21, 1987, as appeal from the decision of the Planning and Zoning Commission denying a conditional use. The Board of Adjustment hating duly considered the record before the Planning and Zoning Commission together with the briefs submitted by the parties, adopts the following findings and conclusions: FINDINGS 1. The appellant submitted an application to the Commission to remove gravel from their land in preparation for developme6~ of a subdivision. - 2. The R-6 zoning district only permits gravel extraction operations as preparation for subdivision development. 3. It has been acknowledged by all parties that access to the site is restricted and is of special concern to all. 4. The conditions presented by staff to the Commission provide mitigation methods to place the least stress on the access. CONCLUSIONS 1. The Commission is required to apply a lesser standard than would normally be applied to a natural resource extraction operation when that operation is principally undertaken to permit subdivision development in accordance with the underlying zoning. 2. The conditions of staff provide adequate safe guards on this natural resource extraction. IT IS DECIDED that the appeal in the above captioned case is granted subject to the conditions of staff listed as follows: -3. Final approval of this conditional use for natural resource extraction will become effective upon the approval ahd recordation of a subdivision plat for an R-6 development as required by 21.15.030.I.1. and sub- division agreement which includes final landscaping, and cost of upgrading Ganoe Street to MOA gravel stan- dards. Removal of gravel shall not occur before a final plat is recorded. A notice of Zoning Action shall be recorded with the D~strict R~co~ders Office prior to the issuance of a land use permit. This approval is subject to compliance with all appli- cable conditional use standards, the submitted applica- tion, and narrative. Ail excavation related to this approval shall be substantially in compliance with the following plans except as modified by these conditions of approval: Sheet C-i, 2-Phased Excavation Plan, showing exca- vation and slope reconstruction sections, slope restoration, surface matting, and reconstruction sections, slope restoration, surface matting, and final grading contours; prepared by Aziz Engineering Company; Scale: 1" ~ 50'; date stamped received 9/15/86. Sheet C-2, Buswell Material-Extraction Site and Mining Plan showing current contours and General Note Legend; Prepared by Aziz Engineering Company; Scale: 1" = 50'; date stamped received 9/15/86. Sheet C-3, Showing Cross Sections A-A, B-B, C-C, Buswell Material Extraction Site and Mining Plan; prepared by Aziz Engineering Company; Scale: 1" 50'; date stamped received 9/15/86. de Sheet C-4, Ground Profie on Knapper Lane extended along Property Line; prepared by Aziz Engineering Company; Scale: 1" = 50'; date stamped received 9/15/86. Conceptual R-6 Residential Development Plan, Sheet C; Prepared by Aziz Engineering Company; Scale 1" = 50'; date stamped received 9/15/86. Sheet C-i, locating two observation wells and one testwell; prepared by Aziz Engineering Company; Scale 1" = 50'; date stamped received 11/21/86. Prior to the issuance of a land use permit, the peti- tioner shall submit an on-site and off-site maintenance plan , dust control plan, signage and traffic control plan for flag men and other measures deemed appropriate for review and approval to Public Works Engineering, Traffic Engineering, Department of Health and Human Services, and Zoning Enforcement. Routine road main- tenance shall include Ganoe Street and one-half mile lengths in both directions along Birchwood Loop Road at the intersection of Ganoe Street. At the conclusion of each work season Ganoe Street, including the intersec- t'.~on~ shall be restored to pre-work season condition. A copy of the approved plans shall be provided to Community Planning within 15 days of its approval. Prior to the issuance of a land use permit, the peti- tioner shall submit a master drainage plan for the site to be reviewed and approved by Public Works Engineering. The Alaska Railroad shall provide comment to Public Works prior to approval. Proof of financial capability for final landscaping and Ganoe Street upgrading shall be provided to the Community Planning Department prior to issuance of a land use permit. Proof of financial capability may be satisfied with a final subdivision agreement. Performance guarantee, such as bonding, are required for and other mitigation measures as required during the four-year excavation period to assure compliance with approved plans. 3 10. ll. 12. 13. 14. 15. To reduce tracking, prior to the issuance of a land use permit, shutterboards shall be installed along the access drive for a minimum of 50 feet, the specific design to be resolved with Public Works Engineering. Prior to issuance of a land use permit, a casual access plan shall be submitted to Public Works. Engineering for review and approval. The prevention of casual access is only intended to be provided through'the period of time of natural resource extraction and may be removed at the. time of subdivision redevelopment. Petitioner shall remove a minimum of 42,500 up to a maximum of 55,000 cubic yards per year from the site whether for sale or removal for stock piling purposes, for a maximum of 170,000 cubic yards over the four year period. (Note: These figures may be subject to reduc- tion based upon Condition %13.) A site plan, stamped by a registered engineer (with notes to address the conditions and identification of all affected haul roads), must be approved by Traffic Engineering. Birchwood Loop Road south to the Glenn Highway, shall be the approved route for trucks hauling gravel. A final mining plan shall be reviewed and approved as part of the plat review, and shall reflect: ae an undisturbed 50-foot wide perimeter along adja- cent residential uses, b. final landscape schedule and plan, final ~lopes of 3 horizontal to 1 vertical with a reverse slope bench 10 feet wide for every 30 ver- tical feet of drop. schedule for the removal of all buildings from %he site (including the quonset-storage building), except the petitioner's home on Lot 9, consistent with the phasing plan. An inspection schedule shall be submitted to Public Works Engineering and Inspection, and Zoning Enforcement which outlines the end of each haul season and times for field inspection of the work. A new topographic map with two-foot contours and per- manent control survey monuments clearly identified, shall be submitted to Zoning Enforcement October 30 of each year commencing with the first haul season. 16. Annual inspection reports prepared by an Alaskan registered engineer identifying location and extent of extraction, as verified by truck~load ticke~s, as it relates to condition %10,. shall be submitted to Zoning Enforcement by October 30 of each year commencing with the first haul season. 17. Removal of gravel shall occur over a period of time not to exceed four years from the recording of the final plat. Hauling of excavated gravel during each. of the four years, shall be limited to the 15th of April and end on the 15th of October of each year. 18. 19. The four-year time limit may not be extended without a public hearing before the Planning and Zoning Commission. Excavation and hauling operations shall be limited to the hours of 7:00 a.m. to 6:00 p.m. Monday through Saturday. No operations shall be permitted on Sundays or legal holidays. DATED at Anchorage, Alaska, this fZ~d day of , 1987. czpl/gl C. Please check or fill in the following: 1. Comprehensive Plan -- Land Use Classification × Residential Commercial Parks/Open Space Transportation Related 2. Comprehensive Plan -- Land Use Intenmty Special Study 3. Environmental Factors (if any): a. Wetland 1. Developable 2. Conservation 3. Preservation Marginal Land Commercial/Industrial Public LanOs/Inst~tutlons Dwelling Units per Acre Alpine/Slope Affectea b. Avalanche c. Floodplain d. Seismic Zone (Harding/Lawson) Please indicate below if any of these events have occurred in the last three years on the property. Rezoning Subdivision Conditiona! Use Zoning Variance 86-071 Case Number · Case Number X Case Number Case Number Enforcement Action For Building/Land Use Permit For Army Corp of Engineers Permit Legal oescnpt~on for adver.s~ng. See ¥/4 Alpine/Slope Affected Industrial Special Study F. ChecKlist Waiver 30 Cop~es of Plat Reduced Copy of Plat (8V2 x 11) Certdicate to Plat Fee Topo Map 3 Cop~es Soils Report 4 Cop~es Aerial Photo Housing Stock Map Zoning Map Water: Sewer: Private Wells Private Sep.c Commumty Well Commun,ty Sys. Pubtic Utility Public Utility 20-*003 Back trey. 6/89)MOA*24 MARK HANSEN P.E. Consulting Engineers Testing Laboratory HC02 BOX 7387, PALMER, AK 99645 (907) 745-4721 Sept. 12, 1990 Lounsbury and Associates, Inc. 723 W. 6th Ave. Anchorage, AK g9501 Attn: James W. Sawhill, P.E. Subject: Subsurface investigation for proposed subdivision of Buswell property, Lots 10, 28 and 29, NE 1/4, Sec. 18, Ti5N, R1W, SM, AlasRa. Gentlemen: Attached are the results of the subject investigation conducted at your request. The investigation includes ~ogging and monitoring three test pits and analysis of the soils encountered. The following information is included: Test Hole Location sketch Test Hole Logs Sieve Analysis Reports MOA soils log forms Figure Sheets 1 - 3 Sheets Sheets 8 - 10 I trust the attached meets your present requirements. If you have any questions, please do not hesitate to call. SincereT~ Mark Hanson, P.E. MARK HANSEN P.E. Consulting Engineers Testing Laborato~ HC02 BOX 7387, PALMER, AK 99645 (907) 745-4721 SUBSURFACE INVESTIGATION "BUSWELL PROPERTY" Lots 10, 28 and 29, NE 1/d, Sec. lB, T15N, R1W, SM, Alaska. Site Description The site consists of roughly 4.5 acres, located in the Birchwood Loop area, Chugiak, Alaska. The site is bounded on the northwest by the Alaska Railroad. Access is from Ganoe Street. The site has previously been used as a gravel extraction site. This use is to continue for the near future. The north portion of the proposed subdivision is presently open gravel pit without vegetation. The Southwest portion above the cut bank contains some natural aider, birch and cottonwood vegetation. The southwest portion between the toe of the hil I and the railroad has second growth vegetation over an old strippings burial site. A steep cut bank about 50 feet high exists on the site. Proposed Development The proposed development of the site will remove additional sand and gravel from the site, make the slope less steep, move the slope back toward the southeast. Upon completion of the gravel extraction the sit~ will bp lots,She three___r.esid~tial usable area on the ~-"l~'{s will be the same approximate elevation as the present floor of the gravel pit .... Field Investigation Subsurface investigation was conducted on 8-15-90, using a Drott 35 backhoe operated by Anderson Brothers Construction. Test pits were logged by Mark Hansen. A g" diameter perforated PVC pipe was set in each test pit beiore bacl<filling to monitor ground water levels. Soil samples were taken from each important strata. The test pit logs describe the soil as 'observed in the field. Lounsbury and Associates Page 2 Soils were olassified and described using the Unified group symbols and group names outlined in ASTM D 248?. Samples of important soil strata were taken from the backhoe bucket. The samples may not entirely represent the coarser portion of the soil. The presence of large gravel, cobbies and boulders should be noted on the logs when interpreting sieve analysis results. The samples do not represent stratification which causes the soil to be somewhat sorted in the field. A 4" perforated PVC pipe was left in the hole to facilitate future ground water monitoring. Ground water was rechecked in each hole nine days following excavation. No percolation tests were performed. The soil encountered at usabie depth is highly permeable, and has been described by sieve analyses. Test pits were located in the field relative to an existing slab from a former building in the floor area of the pit, and relative to the centerline or the railroad tracks. The ~ocation sketch shows the test pit ~ocations. Findings The actual building sites on the three lots will be exposed when the excavation and regrading of the area is complete. The test pit locations represent the northwest edge of the area. that will be exposed after excavating and recontouring the lots. S,Jitab~e soil for the construction of on-site wastewater soil absorption systems was identified in all test pits. Soils at usable depth in pits #1 and #5 are highly permeable, and may require a sand liner. A shallow trench o£ bed system is most suitable for highly permeable soils requir, ing a sand liner. Ground water was relatively shallow in Test pit #2. A shallow bed or trench would be required at that location, possibly with insulation to reduce the required soil cover. A glacial till soil of low permeability was identified at depth in all of the test pits. No percolation test was pertormed in the till layer. Perched water exists above the till in two of the pits. The required four foot separation of soil absorption systems from ground water will dictate the final grade after site excavation and regrading. This should be designed high enough that the required separation from future soil absorption systems to ground water can be maintained. E P T H OF LEGEND TEST HOLE ELEVATION: SOIL DESCRIPTION PROJECT: Subdivision of Bu.'well F:t'opoet'ty T E S T DATE: MOISTURE PIT i · !8-15-9'~ LOGGED o,,r"~' BLOWS/ SAMPLE FOOT NO. 10 11 t2 13 GP-GM GP i ~,,).0-i.0, Fl, BI'own, Poo~'ly goaded Gravel with Silt and Sand, {GP-GM), I I Damp to dry, meduim dense, fill. I ;1.1.-1.~.V, NFS, B~'own Poorly G~'aded G~'avel with Sand, (GP) Damp, I aedium to high d~nsity, sunroundeO pa~'ticles to 3", occasional sand lenses, Fl, Grev/Bcown,. Siitv G~'avel with ~and, (GM)? Oamp, vecy dense, ,~cc.as~ona! co601es, suO?'ounOeO particles to Set '~'', o~,f,]~,~d,_ _ _ F'~'Rv~ pipe.. GPound .~te~' while excavating: i'~one obsePYed .... ': .'~ ~', ~. , ,r'.,,, ,~ o 1990 M A R K H A N S E N F' . E . HC 02 Box 7587 Palmer, Alaska 99645 t907) 745-47Z~ LOG OF F R LEGEND 0 S T (. Pt i SP i 3 TEST HOLE ELEVATION: SOIL DESCRIPTION ~0.0-0.5, Peat, Leaves, organics PROJECT: Subdivision of Buzwell Ppoperty TEST DATE: PIT 2 08-15-90 LOGGED BY: P. MH 0.5-1].',~. NFS, Bpown Pooply Graded Sand, (SP), fine, Damp, low to medium density,, trace 9Pavei to ,"'". 10.0-11.5, F27 Tan, Silty Sand with Gravel, (SM), damp, vepy dense, =.ubpounded papticles to 6". 1i.5-!.3..5, Fl, Gpey, Silty Gravel with Sand. (GM), damp, very dense, sum'ounded paptic!es to 6'~, Bottom of explopation: Set 4" pepfopated PVC pipe Gpound water w~i!e excavating: Gpound water 8-24-90: 9,5~ 1t0 ISTURE BLOWS / SAItPLE FOOT NO. 2',x M A R K H A N S E N P . E . HC 02 ~ox 7387 Falmer~ Alaska 9%45 (9{)7) .......... LOG P T H OF TEST F R LEGEND 0 S T HOLE ELEVAT ION: SOIL DESCRIPTION. PROJECT: Subdivision of Buzwe!l PPoperty TEST DATE: MOISTURE PIT 3 .)8-15-~r LOGGED B'f: RMH BLOWS/ SAMPLE TESTS FOOl' NO. il' 10 il 12 t3 14 15 t6 M A R K GM Pt GP SP GM HA Fl/F4, Brown, GPavel with Silt and Sand, (GM-Pt), mixed with wood, peat and st~'ippinqs, damp, Iow density subt'ounded par'titles to 4", fill. 'Bottom o4 layer dips iy t~qat'd northwest. ' ,., ,,., Poo~ix ?~ded G~¥e~ ~ith S~nd, sub~ounded pat'ti~ies to ~". This is natuPai soil on southeast side of test pit and in slope southeast of test pit. 18.5-16.0, NFS~ Tan/Olive F'ooriy graded Sand, fine~ damp medium dens~ty, (SP) '16.0-16,5, Fl, Tan, Silty GPavei with Sand, iGM), damp, very ' dense, few cobbles, subrounded particles ~o 6". uo~om of expioPation: i6,5' ~et 4 perfo~,at~ PVC plRe Gt'ound water wnlie excava~mg: None observed · Ground wateP 8-24-90: None oOse~'veo S E N P . E . HC n? Bo:.:.' ~o F'aimet', Alaska 99645 ',x M,A. ~'4 Ix Ix Ix 0 0 0 0 0 ~ 0 0 0 0 ~d3d o 0 o 0 0 0 0 0 o o c~ o J.H ~)t]M A~ ~ 3Nl:l £N3~ 1~3d PERFORMED FOR: Municipality oi' .a,r, ci~;rage DEPARTMENT OF HEALTt4 & HUMAN SERVICES 825 "L" Street, Al~chorago., Al&~ka 99502-0650 SOILS LOG -- PERCOLATIOI'! TEST DATE PERFORMED: LEGAL DESCRIPTION: DEP'FH (FEET) 2- 3 4 5 6 G? 7 9 102 17 20 COMMEN FS Township, Range. Section:,,jm_¢ 5¢o. /9 ?'-/54/' ~ ¢uF 0,0 ~1. O SLOPE SITE PLAN ~o~o~ ~F g~(?uo~. 15-° 1990 ,~ ~u 24 ~- . WAS GROUND WATER A/o?' W/~/ ENCOUNTERED? S . L / -'T-' ----'- IF 'Y~S, AT WHAT 0 DEPTH? p j~ / E-~ / / Depth to tb'aler After , Monitoring? /3, ~ Date: Gross Net Depth to Net Time Reading -~,Date ~--~-- __..-7::-T~_ ~ ~ Water Drop PERCOLATION RA'fE TEST RUN BETWEEN (mumteslmch) ['ERG HOLE DIAMETER _ FI AND __ FI PERFORMED [-S'r: _/'vC,~flk )~,~_.~.~ __ I ,/vC,~R/f ~J)J/~'~ CERIlFY 1HAT 1HIS lEST WAS PERFORMED IN ACCORDAt,;CE W'I rH ALL STALE AND M. UtJ',(JIPAL GUIDELIHES IN EFFECT ON [fils DATE. DA1 E: Municipality o! Ancl'lorage DEPARTMEN'I- OF HEALTH & HUMAN SERVICES 825 "L" Streut, Anchoraoe, Ah'~ska 99502-06'50 SOILS LOG -- PERCOLATION TEST PERFORMED FOR: LEGAL DESCRIPTION: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2O CO,%~, M E N`[S -~ ~ o, S- )0.o Townsl,ip, R[~nge, Sectior~:/v'~ ~.- /,~ )PE SITE PLAN ~P WAS GROUND WATER ENCOUf,JTER ED? s IF YES, AT WHAT DEPTH? 9' 5 0 P E Depth to ',Valet Alter Monitoring? ~. ~ Date: Gross Net Depth to Net Reading D~te 'rime Time Water Drop TE~7~' -- / /V° ;o~'r~, I PERCOLATION RATE __ (mtr~utes/tnch~ F-~E[]C; HOLE DIAME'[E[-~ ~ '1 ES7 RUN DE]'W~:EI',! __ FT AND '~ FT PERFORMED BY: )v)~RK ,~,/~A] I A..'/,~ H'./~'.~'.~,' Cf:ii] IFY TtlAT `tHIS 'lEST WAS PERFOFIMED tN ,¢ ../1. ¢o /-.¢;C, ORDANCE WITJ-iALL S'rA-fE Alit) ~,4UNICIPAL OUIDELINES Ih] EI-I:f;CT ON 'tHIS DA'[E. DA'It:. _ PERFORMED FOR: Municipality of Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, Anchorage, Alaska 99502-0650 SOILS LOG m PERCOLATION TEST LEGAL DESCRIPTION: L,--Lr7'% /O/ ''/~ '~',~ Township, Range, Section:N£~ ..(~'~-)g ?"/~/./ R IW" SLOPE SITE PLAN 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2O DEPTIJ FEET] 57 WAS GROUND WATER ENCOUNTERED? /kJO IF YES, AT WFIAT 0 DEPTtt? p ' E Depth lo Water Alter Moniloring? ^/'o,'q~ Date: _~ '~ ~' ¢_0 m Reading Net Depth to Net ' Time Water Drop Gross Date Time -- - ::::~-44C--:'"~..__ _. PERCOLATION RA1 E '-'"'--' (rnmuh!s ,¢,~:~: !'Et!C.: t-tC)LE DIAMETER TEST RUN [ff/l'\,'vkE,N ~ FT AND ~ t 1 /"'CCOF~DANCE WITH ALL (;fA fE AND MurqlCIPAL GUIDEL. ILib;5 IN EFFFCT ON THIS DATE.. (:i ¢.'i Ir Y 1 t4AT 1 FIlS I'EST WAS PERF(),qk ED IN MUNICIPALITY OF ANCHO~GE MEMORANDUM DATE: October 30, 1990 TO: Department of Economic Development and Planning Zoning and Platting THRU: FROM: SUBJECT: John Smith, P.E., Program Manager, On-site Services Department of Health and Human S~rvices_lu2~%4~,r~ Susan Oswalt, On-site Services , Department of Health and Human/Services Request for Comments on Subdivisions November 9, '1990 The Environmental Services Division, On-site Services Section, of the Department of Health and Human Services has reviewed the following cases and has these comments: S-8993: Lots 1 and 2 Hoggard Subdivision The department requests that the proposed well locations be moved to the north to protect available on-site wastewater disposal areas. We will require that the areas for the original and two replacement wastewater disposal sites be designatedon the plat. The plat must also designate that a maximum number of 4 bedrooms be allowed on each lot. Prior to final plat approval, we will require the upgrading of the wastewater disposal system serving the house and the proper abandonment of the existing undocumented system. We will also require the abandonment of the existing well and well pit, and the drilling of a new well. S-8994: Lots 1, 2, 3 Birchwood Acres Subdivision The department has reviewed the proposed plat, and found the following discrepancies in the submittal: 1. We will require a percolation test and water monitoring report for each lot. The test must be taken in an area of potential wastewater disposal. 2. Provide ground water monitoring of all test holes through high water period (approximately May 15). 3. Engineer must show areas of less than 25% slope which would be suitable for on-site wastewater disposal. 4. Show 50 foot setback from area designated for wastewater disposal to the top of slope greater than 25%. 5. We will require evidence of water availability for potential private wells. Department of Economic Development and Planning Zoning and Platting October 30, 1990 Page Two S-8994: S-8995: S-8996: S-8997: Continued: 6. Properly abandon old leach pipe which surfaces on top of slope. 7. Provide appropriate drainage plan for review. 8. Engineer must designate whether each lot will meet the reserved disposal area requirements or have bedrooms designated on the plat. This plat does not meet provisions of AMC 15.65 and applicable portions of AMC 21. Final grading of the area in a 3:1 slope will make the lots unsuitable for development with on-site disposal. Before any further consideration is given to subdividing the land, the final slopes must be permanently established and the above noted items must be resolved. The department requests that the plat be returned to the applicant for further work, or be denied. Block 3 Glen Park Estates Subdivision No objection. Lot 1-C Block 2 Flying Crown Subdivision 92 Vacation only No objection. Lots SA, 9A, llA Block 3 Southcreek Estates Phase 3 Provide copy of ADEC Certificate to Operate a public water system prior to final plat. SO/ljm LOUNSBURY & ASSOCIATES, INC. SURVEYORS ENGINEERS PLANNERS 723 West 6th Avenue, Anchorage, AK 99501 (907) 272-5451 Alaska Toll Free (800) 478-5451 Fax (907) 272-9065 May 26, 1993 RECEIVED Municipality of Anchorage Health Department P.O. Box 196650 Anchorage, AK 99519-6650 MAY 2 7 199; tviu, ~;¢':,p~l~y ot' Anchorage Oept. Health & Human Services Attention: Ms. Susan Oswald Regarding: Dear Susan: Birchwood Acres Subdivision Platting Case S-9346 Lounsbury & Associates has revised the proposed grading plan and plat for the above referenced project. On May llth I met with you to review the revised project and the Health Department requirements. Some additional information is necessary for the Health Department to complete its review. We need to complete percolation test for two of the existing test pits. In addition, we will be providing additional test pits in the higher areas of the lots. We have been monitoring the groundwater since our May llth meeting. Enclosed is a reduced copy of the proposed development with the existing test pits and proposed test pits shown. The Revised Report addressing all items in your January 19, 1993 memorandum will be compelted by the llth of June, and will be submitted to your Department for review and approval. If you have any questions or comments, please feel free to call me at 272-5451. Sincerely, LOUNSBURY & ASSOCIATES, INC. mes W. Sawhill, P.E. Vice-President JWS/sw Enclosure LOUNSBURY & ASSOCIATES, INC. SURVEYORS ENGINEERS PLANNERS 723 West 6th Avenue, Anchorage, AK 99501 (907) 272-5451 Alaska Toll Free (800) 478-5451 Fax (907) 272-9065 June 23, 1993 Municipality of Anchorage DHHS P.O.Box 196650 Anchorage, Alaska 99519-6650 Attention: Mr. John Smith Regarding: Birchwood Acres Subdivision Platting Case S-9346 Dear Mr. Smith: Lounsbury & Associates would like to address each item in your comments for the aforementioned plat per your letter dated January 19, 1993. Items I & 2: We have provided additional soils report and percolation tests to your office on 6-14-93. Items 3 & 4: We have provided your office with copies of the proposed site grading and drainage plan. Item 5: We are transmitting copies of the well logs and permits for adjoining lots. Item 6: The leach pipe in question is the service line from an old trailer which has been removed to a leach field which has been excavated and removed. Item 7: We have provided site grading and drainage plans to office. Items 8 & 9: We have provided site plans which show the septic reserve areas based on gross area and their proposed locations. If there are any questions or if I can be of further assistance please call. Si, ncerely, ~ ~ Kenneth W. Ayes[ P.L.S. ~ MUNICIPALITY OF ANCHORAGE MEMORANDUM Date: January 19, 1993 TO: Department of Economic Development and Planning Zoning and Platting THRU: FROM: John Smith, P. E., Program Manager, On-site Services \, Department of Health and Human Services Susan Oswalt, On-site Services ~ Department of Health and Human ~ervices SUBJECT: Request for Comments on Subdivision(s) January 29, 1993 The Environmental Services Division, On-site Services Section, of the Department of Health and Human Services has reviewed the following cases and has these co~nents: Lots 1, 2, 3 Birchwood Acres Subdivision In 1990 this department provided comments for S-8994, which clearly showed the proposed plat did not meet basic filing requirements outlined in AMC 21 and 15.65. As a result DHHS strongly requested that this plat be returned for additional work, or that it be denied. The new application contains no new information which would alter this position. Therefore, this department recommends the plat be denied since it cannot meet code requirements. Our review shows the following deficiencies: 1, .4We_~i~l_~eq~_ire a ~9~colatio~ monitoring report for each lot. The test must be taken in an area of potential wastewater disposal. 2. Provide ground water monitoring of all testholes through high water period (approximately May 15th). 3. Engineer must show areas of less than 25% slope which would be suitable for on-site _was~zager disposal 4. Show 50 foot setback from area designated for wastewater disposal to the top of slope greater than 25%. 5. We will require evidence of water availability for potential private wells. 6. Properly abandon old leach pipe which surfaces on top of slope. - 7. ~Provide appropriate drainage--~lan-f.or---~e~i-ew. S-9346: Department of Economic Development and Planning January 19, 1993 Page Two S-9346: S-9347: Lots 1, 2, 3, Birchwood Acres Subdivision - Continued 8. Engineer must designate whether each lot will meet the reserved disposal area requirement or have bedrooms designated on the plat. 9. Engineer must show that the proposed wastewater areas are readily accessible to septic tank pumpers. This plat does not meet provisions of AMC 15.65 and applicable portions of AMC 21. Final grading of the area in a 3:1 slope will make the lots unsuitable for development for on-site disposal. Before any further consideration is given to subdivision of the land, the final slopes must be permanently established and the above noted items must be resolved. The department requests that the plat be returned to the applicant for further work, or be denied. Lot 19A Block 21 Fairview Subdivision No objection. S)/ljm: 189 ~ (l,g~) n~qz,~ jw'ml3G'~ AI'PIGtAZ, (HAA) 1.984 LOUNSBURY & ASSOCIATES, INC. SURVEYORS ENGINEERS PLANNERS 723 West 6th Avenue, Anchorage, AK 99501 (907) 272-5451 Alaska Toll Free (800) 478-5451 Fax (907) 272-9065 June 23, 1993 Municipality of Anchorage DHHS P.O.Box 196650 Anchorage, Alaska 99519-6650 Attention: Mr. John Smith RECEIVED JUN 2 4 1995 Municipality of Anchorag. e Dept, Health & Human Services Regarding: Birchwood Acres Subdivision Platting Case S-9346 Dear Mr. Smith: Lounsbury & Associates has researched the water availability for the adjoining lots to this proposed subdivision and finds that there should be sufficient water available for new wells. Enclosed are the well logs for Lot 9 and Lot 30B. If there are any questions or if I can be of further assistance please call. Sin~cere ~, ames W. Sawhil , PoEo MARK HANSEN P.E. Consulting Engineers Testin~ Laboratory HC02 BOX 7387, PALMER, AK 99645 (907) 745-4721 Lounsbury and Associates, Inc. u23 W. 6th Ave. Anchorage. AK 99501 .-'.ttn: James W. £awini I i , P.E. Sept. 1£, 1990 Subject: Subsurface investigation for proposeO subdivision o~ Buswel I property, Lots lO, 28 and 29, NE ilL, Sec. T15N, R1W, SM. Alaska. Gentlemen: AttacneC ale the results or the subject investigation conducted at your toques%. The investigation includes iog~in~ and monitorin~ three test pits and anal,/sis or the soi Is encountered. ~he ~ollowing information is included: Test Hole Location sketch Test Hole Logs Sieve Analysts Reports MOA soils log forms Figure Sheets Sheets a - 7 Sheets ~3 - 10 trust the attached meets your present requirements. If l~'o:_~ have any questions, please do not hesitate to catt. Sincerely. Mart< Hanson. P.E. MARK HANSEN P.E. Consultin~ Engineers Testing Laboratory HC02 BOX 7387. PALMER, AK 99645 (907) 745-4721 SUBSURFACE INVESTIGATION "BUSWELL PROPERTY" Lots 10, 28 and 29, NE l/a, Sec. 18, T15N, R1W, SM, Alaska. Site Description The site consists o~ roughly a.5 acres, locate~ in the Birchwood Loop area. Chugiak, Alaska. The site is bounded on the northwest by the Alaska Railroad. Access is from Ganoe Street. The site has previously been used as a gravel extraction site. This use is to continue ~or the near ~uture. The north portion of the proposed subdivision is ppesentty open gravel pit without vegetation. The Southwest portion above the cut bank contains some natural alder, bi£cn and cottonwood vegetation. The southwest portion between the toe of the hill and the railroad has second growth vegetation over an old strippings burial site. A steep cut bank about 50 feet high exists on the site. Proposed Development The proposed development or the site will remove additional sand and gravel from the site. make the slope less steep, move the slope back toward the southeast. Upon completion of the gravel extraction the site wi[ I be devetoped into three residential lots. The usable area on the proposed lots wit I be the same approximate elevation as the present floor of the gravel pit. Field Investigation Subsurface investigation was conducted on 8-i5-~0, using a Drott ~5 backhoe operated by Anderson Brothers Construction. Test pits were logged by i~a~k Hansen. A a" diameter perforated PVC pipe was set iii each test pit before backfilling to monitor ground water levels. Soil samples were taken from each important strata. The test pit logs describe the soil as observed in the ~ield. Lou~s~ur¥' and Associates '~o~ Is were classified and described using the (Jl~if ie,~ ~roup s'/mbois and group names outlined in AST~*~ D 2487. Samples ~mDortant sol 1 strata were taken from the bac!<hoe The samples may not en%iFelv represent the coarser portion or the soil. 7he presence of large ~ravel. cogbles and boulders shot]Ad be noted on the lo~s when an~i'~,'sis results. The samples do not represent stratification which causez the soil to be somewhat sorted ~] ~ne r ~eld. A 4" perforated PVC pipe was left in the hole ~o faci I irate ~uture ground water monitorin,~. ?;as r'echecked in each hole nine day~ fbi towin~ excavation. lqo percolation tests were performed. The soil encountered ~t ,.~sagle depth is highly permeable, and has been ,~escribe~ by' sieve analyses. Fe~t pits were located in the field relative to an e×lstin~ sl~g trom a former building in the floor area of the an,] relative to the centeriine or the ~.ailroad trBCl<S. Fhe location sketch shows the test I;,it locations. Findings 'the actual building sites on the three lots will be expose~J when the excavation and regrading of the area is complete. ]~he test pit locations represent the northwest edge o~ the area that will be exposed a~ter excavating anci recontourlng ~e lots. Suitable soil for the construction of on-site wastewater soil adsorption systems was identified in all test pits. So~ is ~t usable depth in pits #l and #3 are night;/ F, ermeable, and may require a sand liner. A shal Iow trench o£ bed ay'stem is most suitable for ~i~hlM permeable soils requi£in~ a sand liner, qround water was relatively shallow in '['est pit ~2. A shallow bed or trench would be required a% that location, possibly with ins~ia%ion to reduce the £'e¢!ui£e~ soi I oover. A glacial till soil of low permeability was identified at depth in al { of the test pits. No percolation test was performed in the till layer. Perched water exists above the till in two o~ the pits. The required four foot separation or soil absorption swstems from ground water wi I I dictate the :inal grade after site excavation and regrading. 'rhis should be designed high enough that the required separation from future soil absorption systems to ground water, can be maintained. / I I I ! 6 At40~ ,51', 5M Cone oOserved - ~ 2T , '.V,(',-(, .% psat,, L_caves, : ; :T~eolu~l dEnsl~',., t~,~¢_8 q?a_vsl .*.o Z~. : 10.0-Ii.5. Fi. Tan. iii?; San.2 wi;n Gravei. :-2d), damp, ! ~M E',o~tom oY expio~'.m~lon: Set 4" perfot'ated F'VC G~'ound wa;e~' M ~ ~: K H A N S E N P , ~ · HC 02 ~ox 7~.~7 Falmet', Atas~:a 99645 ~907) !4 E-:T ;~OLE ELEVA ? ! !Z:N: EOIL 3EE.?iPTION ::']]E;7; l._c.,:iv:s:on ,-, ~uzw.:_i[ f,'.Dparr',. ,-_p GP :'~FS. i3rev,.'Ot iv_=, F'oortv qi'aded 5t'avel ~4r..n Sand, damP,' i;~w densir, v. iaa~.:s fine _:ann, -suorou. nded partlY_les ~o i" This is na~Urai soil on sou~heas~ ---tam of test pit and in slope .?:,u~hems~ of ~est ~it, NFS, Tan/Olive Poorly .graded Sand, fine, damp medium denslr, y, GM ', ,~.~-1~.~. F~. Tan, :silty Gravel with Sand, t..'SM), damp, very ; i dense, few cooOles, _=um'oun~eO Particles ~o o", ~., Bottom at e',<piora~ion: ia.5 Set 4" per+orate~ PVC pipe G~und wa;er w~i~e expava;mg: None ooserveo ,3rounO water 8-24-90: ~ne ooserveo Z'almm,. 'M,~Sk'g zoA4E ,,-wrrl ':~-i7'~, .LH~I'3M AB il'l$1dVO~ ,IN3:) Id'Id o _o ~o o ~o o o o o o. o o 3 .o - ,LH01':IM ,I.g ~':iNI.d .LN~) il3d O J. HSI'~ X! ¥3SNVO:) .LN'1:) W'ld 0 0 0 0 £~DI3M A~B Id:iNi.d .LN~D o _o ~o o ~o o o 0 0 0 .,1 PERFORMED FOR: Municipalily ol Ar,ci~:.rage DEPAHTMENT OF HEALTH & HUMAN SERVICES ,, ,,,,:,l-,a 99502-065() ,525 "L" S',reet, Anchora~;{h SOILS LOG -- PERCOLATION TEST DATE PERFORMED: LEGAL DESCRIPTION: ~ o,o-/.o (FEET) ,G P' 2 3 4 5 6 7 8 9 10J 12 14 1615q 18 13 ~o, ~$ .~) Towns~ip, Range, Section:,u'~...¢., 5~- /~ 7-/$x/ ~ ,~v SLOPE SITE PLAN WAS GROUND WATER A]o'r ENCOUNTER ED? S L IF YES, AT WHAT O DEPTH? p E- Depth l0 Waler Alter ~oniloring? /:), ~ ' Dale: Gross Net Depth to /',let Reading Date Tirr, e Time Water Drop PE[~COLATtON [:iA]' E EST RUN 8ET'WEEN (minutes/tach) I"ERC HOLE DIAMETER ____ FI AND ~ FT CERIlFY THAT THIS TEST WAS PERFORMED IN r,,~'~ r: ,¢;,.//. ~o PERFORMED FOR: Municipality ol Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Str'eut, Anchor~.qe, Alaska 99502-0650 SOILS LOG m PERCOLATION TEST LEGAL DESCRIPTION: ~.o-0,~ 1 2 3 4 5 6 7 8 9 10 12 14 17 2O COMMENTS )Ooo x~.¥ ~0~-/) Townslfip, Range, Section:,VE.~, ~¢... /~ SLOPE SITE PLAN ~P '/, WAS GROUND WATER ENCOUNTERED? S L IF YES, ATWHAT DEPTH? 9' 5 0 P E Depth to Water Aller Monitoring? _ ~-). ~ Dale: Gross Net Depth to Net Reading Date Time Time Water Drop PERCOLATION RArE (minutes/tach) PERC HOLE DIAMETER 1ES1 RUN UETWEEN __ FTAND ~ FT PERFORMED BY: CEH1 IFY THAT '1HIS TEST WAS PERFORM, ED IN PERFORMED FOR: Municipality o! Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, AnchoraGe, Alaska 99502-06fi0 SOILS LOG -- PERCOLATION TEST ENGINEER'S SEAL) 1 I ':,/.".'-. ", ..... ' ,, :.:-~'L--~ DA'[ E PER FORMED: LEGAL DESCRIPTION: (.,..o'r.', I0~ 2 9 10 ll-fl 12t 5P 13 14d 16 q 17 18 Township, Range, Section:N£~ 5sc. )$ v'-/5,v ~ /w" SLOPE SITE PLAN COMMENT5 .~ WAS GROUND WATER ENCOUNTERED? No S L IF YES. AT WHAT O DEPTH? P E Deplh to Water Al[er Moniloring? NON~ . Date: _~ -2- ~- ~?0. Gross Net Depth to Net Reading Date Time Time Water Drop PERCOLATION RAJ E '-'---- TEST RUN [~[:TV,'F:EN ~ __ (rn:r, btes. ir,c~': ~;E~'{(.; HOLE DIAMETER __ FT AN[) ~ i'[ THAT THIS TEST WAS PERFC;~MEO IN ~./I. qu MUNICIPALITY OF ANCHORAGE MEMORANDUM DATE: June 24, 1993 TO: Department of Economic Development and Planning Zoning and Platting FROM: SUBJECT: John Smith, P.E., Program Manager, On-site Services Department of Health and Human Services ~3~+ S-9346: Birchwood Acres Subdivision All comments and concerns specified in our January 19, 1993 memorandum have been satisfactorily addressed by the applicant. JS/ljm MUNICIPALITY OF ANCHORAGE MEMORANDUM DATE: August 13, 1992 TO: FROM: Department of Economic Development and Planning Zoning and Platting Susan Oswalt, On-site Services~~ , Department of Health and Huma~B~rvices SUBJECT: Request for Comments on Subdivision(s) August 21, 1992 The Environmental Services Division, On-site Services Section of the Department of Health and Human Services has reviewed the following cases and has these comments: S-9252: Thoreau Subdivision - Revised No objection to revised plat. S-9293: Lots 1, 2 Birchwood Acres Subdivision The information submitted with the plat indicates the division into three lots, but the plat shows only two lots. We need clarification on the actual division. In addition, the following information is missing from the plat application: 1. We will require that soil tests be reported on forms provided by DHHS. Each test must include percolation results and water monitoring results. 2. We will require water monitoring results through a high water period. 3. Provide information on water availablility. 4. Provide a drainage plan which addresses potential impact on on-site wastewater systems from surface waters. 5. There is a garden hose and a 4" sewer pipe which are buried near the top of the slope. We request information on its current use; the pipe may not discharge sewage. 6. The applicant needs to designate which reserve disposal option is planned for this subdivision. It appears that there is insufficient area for the reserve requirement. From information provided, it appears the soil tests provided now are not representative of what the area will actually be like following completion of the extraction operation. As previously noted for S-8994, this plat not only does not meet filing requirements outlined in 21.15 and 15.65, but it also is premature. We recommend this plat be returned to the applicant due to insufficient information and filing requirements. Co Please check or fill in the following: 1. Comprehensive Plan-- Land Use Classification Residential .Commercial .. Parks/Open Space Transportation Related . Marginal Land Commercial/Industrial Public Lands/Institutions Alpine/Slope Affected Industrial Special Study 2. Comprehensive Plan -- Land Use Intensity Special Study Dwelling Units per Acre Alpine/Slope Affected Environmental Factors (if any): a. Wetland lq/_& 1. Developable 2. Conservation 3. Preservation b. Avalanche c. Floodplain d. Seismic Zone (Harding/Lawson) D. Please indicate below if any of these events have occurred in the last five years on the property. X Rezoning Subdivision Conditional Use Zoning Vadance Enfomement Action For Building/Land Use Permit For Case Number Case Number Case Number Case Number 86-075 - 86-071 Army Corp of Engineers Permit E. Legal description for advertising. Government Lots 10~28 & 29~ Sec. 18~ T15N, R1W, SM Checklist X X X X X X ,Z~3 Copies of Plat Reduced Copy of Plat (8 1/2 x 11 ) Certificate to Plat Aedal Photo Housing Stock Map ,, Zoning Map L~O03 8ac~ I Re~. 9~92) ' Water: X Sewer: X Pdvate Wells Pdvate Septic Fee X , Drainage Plan X Topo Map 3 Copies X Soils Report 4 Copies Pedestrian Walkways Landscaping Requirements Community Well Community Sys. Waiver Public Utility Public Utility MUNICIPALITY OF ANCHORAGE COMMUNITY PLANNING AND DEVELOPMENT P.O. Box 196650 Anchorage, Alaska 99519-6650 PRELIMINARY PLAT APPLICATION OFFICE USE REC'D BY: n re uested below Pnnt one letter or number per block Please fill in the informatio q · ' · 1. Vacation Code 2 Tax Identification No. 3. Street Address 4. N~ abbreviated legal description (T12N R2W SEC 2 LOT 45 OR SHORT SUB BLK 3 LOTS 5. EXISTING abbreviated legal description (T12N R2W SEC 2 LOT 45 OR SHORT SUB BLK 3 LOTS 34) full legal on back page. G O V!T L O T S i 0 , 2 8 & 2 9 S E E i 8 T 1 5 N ~ 1W S M; 6. Petitioner's Name (Last - First) A . C BUS WELL 7. Petitioner's Representative Address 951 East Creekside Drive f/9 Address 723 West 6th Avenue City Wasilla State Alaska City Anchorage State Alaska Phone # 373-3030 Zip 99687 Phone # 272-5451 Zip 99501 8. Petition Area Acreage 9. 6 2 Proposed 10. Existing 11, Grid Number 12. Zone Number Lots Number Lots 'NWl155 R- 6 13. Fee $ 500. O0 14. Community Council Birchwood I hereby certify that (I am) (I have been authorized to act for) the owner of the property described above and that I desire to subdivide it in conformance with Chapter 21 of the Anchorage Municipal Code of Ordinances. I understand that payment of the basic subdivision fee is nonrefundable and is to cover the costs associated with processing this application, that it does not assure approval of the subdivision. I also understand that additional fees may be assessed if the Municipality's costs to process this application exceed the basic fee. I further understand that assigned headng dates are tentative and may have to be postponed by Planning Staff, Platting Board, Planning Commission, or the Assembly due to administrative reasons. Date: 'Agents must provide written proof of authorization. 20-003 Front i Rev 9/92) ' MARK HANSEN P.E. Consulting Engineers Testing Laboratory HC02 BOX 7387, PALMER, AK 99645 (907) 745-4721 Lounsbury and Associates, Inc. 723 W. 6th Ave. Anchorage, AK 99501 Sept. 12, 1990 Attn: James W. Sawhill, P.E. Subject: Subsurface investigation for proposed subdivision of Buswell property, Lots 10, 28 and 29, NE 1/4, Sec. 18, T15N, RiW, SM, Alaska. Gentlemen: Attached are the results of the subject investigation conducted at your request. The investigation includes logging and monitoring three test pits and analysis of the soils encountered. The following information is included: Test Hole Location sketch Test Hole Logs Sieve Analysis Reports MOA soils log fo~ms Figure 1 Sheets 1 - 3 Sheets 4 - ? Sheets 8 - 10 [ trust the attached meets your present requirements. If you have any ques%ions, please do not hesitate to call. Mack Hansen, .P.E. MARK HANSEN P.E. Consulting Engineers Testing Laboratory HC02 BOX 7387, PALMER, AK 99645 (907) 745-4721 SUBSURFACE INVESTIGATION "BUSWELL PROPERTY" Lots lO, 28 and 29, NE i/4, Sec. i8, Ti5N, RiW, SM, Alaska. Site Description The site consists of roughly 4.5 acres, located in the Birchwood Loop area, Chugiak, Alaska. The site is bounded on the northwest by the Alaska Railroad. Access is from Ganoe Street. The site has previously been used as a gravel extraction site. This use is to continue for the near future. The north portion of the proposed subdivision is presently open gravel pit without vegetation. The Southwest portion above the cut bank contains some natural alder, birch and cottonwood vegetation. The southwest portion between the toe of the hill and the railroad has second growth vegetation over an old strippings burial site. A steep cut bank about 50 feet high exists on the site. Proposed Development The proposed development of the site will remove additional sand and gravel from the site, make the slope less steep, move the slope back toward the southeast. Upon completion of the gravel extraction the site will be developed into three residential lots. The usable area on the proposed lots will be the same approximate elevation as the present floor of the gravel pit. Field Investigation Subsurface investigation was conducted on 8-15-90, using a Drott 35 backhoe operated by Anderson Brothers Construction. Test pits were logged by Mark Hansen. A 4" diameter perforated PVC pipe was set in each test pit before backfilling to monitor ground water levels. Soil samples were taken from each important strata. The test pit logs describe the soil as observed in the field. Lounsbury and Associates Pa~e 2 Soils were classified and described using the Unified group symbols and group names outlined in ASTM D 2487. Samples of important soil strata were taken from the backhoe bucket. The samples may not entirely represent the coarser portion of the soil. The presence of large gravel, cobbles, and boulders should be noted on the logs when interpreting sieve analysis results. The samples do not represent stratification which causes the soil to be somewhat sorted in the field. A 4" perforated PVC pipe was left in the hole to facilitate future ground water monitoring. Ground water was rechecked in each hole nine days following excavation. No percolation tests were performed. The soil encountered at usable depth is highly permeable, and has been described by sieve analyses. Test pits were located in the field relative to an existing slab from a former building in the floor area of the pit, and relative to the centerline or the railroad tracks. The location sketch shows the test pit locations. Findings The actual building sites on the three lots will be exposed when the exca~vation and regrading of the area is complete. The test pit locations represent the northwest edge of the area that will be exposed after excavating and recontouring ~.he lots. Suitable soil for the construction of on-site wastewater soil absorption systems was identified in all test pits. Soils at usable depth in pits #1 and #3 are highly permeable, and may require a sand liner. A shallow trench or bed system is most suitable for highly permeable soils requiring a sand liner. Ground water was relatively shallow in Test pit #2. A. shat low bed or trench would be required at that location, possibly with insulation to reduce the required soil cover. A glacial till soil of low permeability was identified at depth in all of the test pits. No percolation test was performed in the till ~ayer. Perched water exists above the till in two of the pits. The required four foot separation of soil absorption systems from ground water will dictate the final grade after site excavation and regrading. This should be designed high enough that the required separation from future soil absorption systems to ground water can be maintained. 10,28,2 5/"/. ,( II t I I I I i I I I I I ! I I I I / ! I / I I I I I ! J Lo.r 26 / I / / ! ! ko~' 2 9 (3ANO;F. ~T. LOG LEGEND lEST F R r, ~ r,T~, .'-2,0iL uE~Cr~r T .... PRO.SECT: SuOdivismn ef Buzweii Propoer.~y TEST OATE: MOISTURE 08-t5-90 LOGGED £~¥: RHH BLONS/ SAiIPLE TE"_-'TS FOOT E,P-GH GF' Fi, Brown, Pomrl',..: qraded Gravel with Sil~, and Se. nd, Damp to dry, med~i~ dense, fill. ,'~.,.~-,.=.,,,'" '~ '"~. NFS, Brown Pooriv Graded Gravel with Sand, ~.GP), Damp, medium to hiq_h d~r. sit¥, sum'ounded pal, ticies to occasional sand lenses. "'~ 0-i5,',). ¢~ .,3rev/Brown, Siit,¢ Gravel with Rand .... t,, damp, , : aense~ 6cc.aszona! co'.hIes, suO;'oundeO particles to potto,,l~ of ~.plor~t:ion:~.-.'=' Set 4" performr, ed F'VC pipe Ground N*::ter while excavatino.,: Ground war, er 8-24-~0: 15.5' None observed K M a,,~' ,i:' H A N S S N P , c~ . HC ¢~2. F-;ox ~o?,...,_,, F'~_lmer, Alaska '.-?'%45 ¢07) 745-472; LOG OF TEST HOLE ELEVATION: SOIL DESCRIPTION PROJECT: Suodi',,is~.on of Buz;~eil Fvoperty TEST PIT Z DATE: 08-15-90 LOGGED BY: !~OISTURE BLOWS/ SAHPLE TES'fS FOOT l'~O. , ? 0 F't ~M Gt'~ L_caves, organics NFS, B~'own Poorly Graded Sand, (SF') fine, Damp. low to medium density, b'ace ?'avei to 2". l(."..0-1!.5, F2, Tan. Silty Sand with Gravel. (SM), damp, vew dense. ~.ub~'ou~,ded pa,'ticies to 6". Iii.5-!3.5, Fl, Grey, Silty Gt'avei ~ith Sand. (G~4)? damp, very I dense, sub~'ounoed 2,;; ,, ............. - , . 7.:,u/ Falmef', ~las~::a 9%45 {907) LOG OF _EGE~-~D TEST HF~L= ELEVATION: SOIL DESCRIPTION PROJECT: Subdivision of Bu. swe~_i ?roperr. v TEST gATE: PIT 3 08-15-90 LOGGED BY: RMH BLOWS/ SAMPLE TESTS FOOl- 10 11 12 13 14 15 16 F!/F4, Brown. Gravel ~ith Silt _~.nd Sand, (GM-Pt), mixed with wood, peat and strippings, damp,. ',ow oeo~ty =uOrounded particies to 4", fill. Bottom o~ layer dips ~-teeph, toward northwest. ' ' ~ il.0-8.5. NFS. Grev/Olive~ '~. · j Pooi'lv ~;~'aded Gravel ~ith Sand, ~ , i damp,'t6w density, lacks fine sand, '~, ', suOr6unded parti~:ies to 1". ' [, ', This ~s natural so~i on southeast GP I test pit and in slope ~uu,mma~t of Sest pit. ..... ~-t ..... , NFS, Tan/Olive Poorly qraded. Sand, fine~ damp density, ~:,'~==~.0-1~.5, Fi, Tan, Silty Gravei with Sand, GM } i dense, ~w cobbies, ~ubrounde~ particles ~o Bottom of e',<pior.ation: S~t 4" perfo~'ate,~ PVC pipe ~'nund Wa~er wOite exc'ava~ng: None Observed ~roLtnd ~ater 8-24-90: ?4one o~served x M,A. J X ,, ,,.: H A R K H A N S E H F'. .~ . Hf'l_ n2... E:ox .... /..,o/ Palmer, '''~ ...... --"-"-45 ":" 4- ,,.-,.m c~ r~ ~0 J.H~I~IM Xg id:lGIdVO:) J.N~1:) 0 0 0 0 ,LH013M ,l,g1~3NI~I ,LN30 U3d Z .? ~ c~ r~ ~0 IH~II3/~~,9 I~3NI~I £N3~) ~13d :d3d £ H IDI3 k~ ~,ii~1 3NI~ J.N 3~)~3d 0 0 0 IHt)I3M .4~ Za3Nl~l INgO ~3d PERFORMED FOR: Municipality of Ar,ci~crage DEPARTMENT OF HEALTH & HL!MAN SERVICES 825 "L" Street, Anchon:ge, Alaska 99502-0650 SOILS LOG -- P~RCOLATIOH TEST DATE PERFORMED: LEGAL DEPTH (FEET) 1 2 3 4 5 6 7 8 10J 11 12 14-4 Tov,'nsl,:,p, Range, Section:/j/?.¢. 0,0 -/.O SLOPE SiTE PLAN ~ /? / / ~ / / 17- 18 1.3 20 WAS GROUND WATER ENCOUNTERED? S .,---~- - IF YES, AT WHAT O DEPTH? p / Depth to Water After -,,-" '-,v,'"" Gross Net Depth to Net Reading Date Time Time Water Drop PERCOLATION RATE .___ (m.nutestmch) PERCHOLE DIAMETER _ COMMENTS TEST RUN BETWEEN ~ Fl ,",ND ~ FT ACCoR.r).',,,%CE WI tH ALL STAI ~ AND MI)i'I:QtPAL GUIDELINES IN EFFECT ON TI;IS DA'i E. CF_R1 IFY 1HAT 1;'-ILS l EST WAS PERFORMED OA'~ ~-.: y. z/, 9o PERFORMED FOR: Municipality o! Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Streut, Anchorugo, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST LEGAL DESCRIPTION: D.o-r5 o.o-o.~ 1 2 4 5 7 8 10 11 12 14- 15- 17- 18- 19- 20- Townstfip, Range, S )PE SITE PLAN x / '.~ . / / WAS GROUND WATER ENCOUNTERED? / _ / S IF YES AT WHAT , DEPTH? d), 5 0 P E Del]Ih to Water Aller Monitoring? _~.--5 ' Oale: ~ $-F"yv Gross Net Depth to Net Reading Date Time Time Water Drop PERCOLATION RArE __ (mmuteshnch) PE[IC t lOLE DIAMETER C O ;,~j',,4 E t ~ T S 1 ES1 RUN u,r'_TW[:EI'I __ Fl AND . '~ F'F PERFORMED BY: /,/),~RK fi~/¢~,4 __ I /w___.~__~ g,C/,'3gc9 Ct:H1 IF Y TIlA'F 1 HIS 1-EST WAS PERFORMFD IN /..f;(.ORDANCEWITk~ALLS'FAIEAt~DMUNICIPALGIJIDELINESIN EFFI:CTON'fHISDA'fE. DA'Ir:.. ¢.7].¢o PERFORMED FOR: Municipality o! Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, Anchorage, Ataska 99502-0650 ,SOILS LOG m PERCOLATION TEST (ENGINEER'S SEAL) ' :r.-' · 7~' % ..... \, DA'rE PERFORMED: 5~ LEGAL DESCRIPTION: f...g?".S .12/,?...~,, i.. ? 0,0~ 4 5 6 7 9 10 11 8l_ 12 13 14-~ 15 17 18 19 Township, Range, Section:N£~ ~;~c..)$ ~'/¢.v R /~/' SLOPE SITE PLAN WAS GROUND WATER ENCOUNTERE:D7 IF YES, AT WHAT DEPI'H? Deplh 10 Water Alter t~loniloring? Reading Date N o_ P Gross Net Depth to Net Time Time Water Drop 7' PERCOLATION RA1E '-'----- TEST RUN [~[i'T\,"v~-:EF,I ' ~ ____ (minutes mt:h; PEH(.: HOLE DIAMETER __ F'T AN[) ~ il ACCORD,,',,r~CE WI'fH ALL L;rA fE AND MUNICIPAL GUIDEL. INt:;~, IN EFFECT ON THIS DATE (:~ [!il[Y I tiAT 1HISTEST WAS PERFOP, MEDIN ~,,',., ~ _9://'F° DRILLING LOG Well (~ner_ ~oeatlon ;. IO. R2 ? Ig?g '"-; of drawdown from statle level; -: :, .. Dat~ d eompletlon~ ~/17/79 ' ,.'~ ....... ~::,~ .......... · - .... - · WElL LOG Del~lntee~f~'omr;;, ';;,, . .: " - "-~' '" grmmd~ ':'.;? ..... .- :-Give (~etails o! f~)nnatlons penetrsted, size o! material, color and hardness : i Ran e ~ectlon, if known; or distance malo ro~'4 -- (address o! Townsh p, g , . ... .. · ./1 .~/ .. . ~ ' L~c q03 ~ ~.~i TIS'.; P12. ~.:l. (hu,'~.,,~ ;. . ...... ~ ' ' a~ a~ '~ o · Size o! easln 6g--~--~Depth of Hole $ 3 feet Cased to ~ 0,7 feet StaUe water level ~ 3 ft. (abiive) (below) land surface. Finish of well (check one) open end ( :.x *); Screen ( )1 Perforated ( ). De'be ~'i~ or penorauo ..... Well pmnping teR at_~__._pilons per (hour) (minute) for 1 hours witl, Lounsbury and Associates, Inc. 723 W. 6th Ave. Anchorage, AK 99501 Attn.: James W. Sawhill, P.E. MARK HANSEN P.E. Consulting Engineers Testing Laboralory HC02 BOX 7387, PALMER, AK 99645 (907) 745-4721 R~C~V~D June 11. 1993 Dept. Hea,,h & ?~uma~ Services Subject: Supplemental soils investigation for proposed Bircnwood Acres Subdivision, located within Lots 10, 28 and 29, NE 1/4, Sec. 1~, T15N, R1W, SM Gentlemen: A supplemental field soils investigation was conducted on 6/2/95 and 6~4~93 on the above site. The original investigation was conducted ~n August and September, 1990. The following additional field work was conducted: An additional test pit. #2a, was excavated near Test p~t #2 or the original investigation. The monitor tube of the old pit had become partially filled with soil and was not usable. Percolation tests were performed next to test pits #2 and Three test pits. #4. #5 and #6. were excavated on tne upo.~:r area of tine site. Percolation tests were performed next to pits #5 and Sieve analysis was performed on selected soil samples [o verify visual classification. The test pit logs and the percolation tests are reported on the appropriate Municipality of Anchorage forms. Locations are shown on a topographic map Sincerely. _1t Mark Hansen ~C~O 0 o _o ~o ~o ~o ~o .o ~ o o. ~ o mr~O ~.H DI3 lA A.g ~ 3NI:~ J.N~D U~d J. HOI3~ All ~13~d¥0~ IN3~ t~3d o o ~ o o ;t o o o o o PERFORMED FOR: Municipality o! Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST / * R. Mark Hanse~ - 4753 c' ,b.,[,' CE DATE PERFORMED: ~') ~7 LEGAL DESCRIPTION: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 SLOPE TownsHip, Range, Section: SITE PLAN -( WAS GROUND WATER ENCOUNTERED? / S IF YES, AT WHAT (~. ,~ ~ 0L DEPTH? p E Depth to Water Alter'TrO, Monitoring? Date: Gross Net Depth to Net Reading Date Time Time Water Drop ~-q,')5 o.o~-;~ - /~ o PERCOLATION RATE O, ///' (minutes/inch) PERCHOLEDtAMETER TEST RUN BETWEEN ~7~ FT AND ~ FT ~ ,,v 4 l~ X ~ ~. h ~ ), FIT 15' ,Al. of Cf(/r..,~x/4~ PERFORMED BY: Jx~h~ ll,¢#~/v , /~n~.L PrAN'~g~,l ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. CERTIFY THAT THIS TEST WAS PERFORMED IN DATE: ~ /It/¢~ 72~008 fRev. 4/851 Municipality o! Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST I ~ q, R. Mark Hansen 2 ~' J DATE PERFORMED: ~ ~-- 7~ LEGAL DESCRIPTION: I~' ~ ! PrO,r3~5~ [~¢~,VJO~r~ J~C f'~'$ Township, Range, Section: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 ;19 . 20 COMMENTS SLOPE SITE PLAN WAS GROUND WATER \/( 5 '' ENCOUNTERED? IF YES, AT WHAT I OL DEPTH? (~,S P Depth to Water Alter_ ~ Monitoring? ~, ~ Date: ~ 'il ' ~ ~ !1' Gross Net Depth to Net Reading Date Time Time Water Drop ~ O:~ I~ ~ s¢~ ~1 ~ 1.75 PERCOLATION RATE__O .';_7~ (minutes/inchJ PERC HOLE DIAMETER TEST RUN BETWEEN z~ FT AND --~ FT PERFORMED BY: /'-'/,~ ~ X ,~, ~ J[J }~,'J I ~ ~ R ~ ~!~ ~ l ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. CERTIFY THAI THIS TEST WAS PERFORMED IN DATE: ~ /il/c)`], Municipality of Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST SITE PLAN LEGAL DESCRIPTION: 101" ~. Prq~.~d ~k~.Wo~,,J )~c¢'eS Township, Range, Section: SLOPE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 ,~19 2o COMMENTS lb,~' , WAS GROUND WATER ENCOUNTERED? S L IF YES, AT WHAT O DEPTH? p E Depth t0 Water Gross Net Depth to ~ Net Reading Date Time Time Water Drop 6-.¢.93 o ' o~,'. co O '~-5 '"'"'Il (;," o'o'~'oo I m;~ 30 I" PERCOLATION RATE __ TEST RUN BETWEEN __ ~ A~J~ ?IT' (minutes/inch) PERC HOLE DIAMETER FT AND. ~ FT /2- ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. CERTIFY THAT THIS TEST WAS PERFORMED IN DATE: 6- //' q '~ Municipality o! Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST PERFORMED FOR: % R. Mark Hansen ,~ ~ I ~,~';~ *., .' :~b~ ~ I DATE PERFORMED: ~ '~ .... ~ LEGAL DESCRIPTION: 101~ I i Pre9,/O~/ ~/-¢~!d006~ ./~ClFf'S Township, Range, Section: 10 11 12 13 14 15 16 17 18 ;19 20 5/L?y 5~UO )PE SITE PLAN WAS GROUND WATER ENCOUNTERED;' ~F YES, AT WHAT DEPTH? /?~ ~0 Depth to Water Alter _ ; Monitoring? q, ~5 oate: b' S L 0 P E Gross Net Depth to ~. Net Reading Date Time Time Water Drop PERCOLATION RATE __ (minutes/inch) PERC HOLE DIAMETER TEST RUN BETWEEN .. FTAND __ FT COMMENTS ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. CE~,F~ THAT TH,s ~EST WAS PE~OR~EO ,N Municipality el Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 %" Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST PERFORMED FOR: LEGAL DESCRIPTION: 1~ PE,~T 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 '19 20' °wnship, Range, Section: ~/,~. t/¢ Se(, I g SLOPE SITE PLAN _",, WAS GROUND WATER ENCOUNTERED? IF YES, AT WHAT DEPTH? s: ~enitorina? ~0~ Date: ~,/////¢ ~ Gross Net Depth to " Net Reading Date Time Time Water Drop C-5.95 6 ~cc. '3" · ;' '~ 'Z.../* PERCOLATION RATE 0 'O '~ (m,nutes/inch) PERC HOLE DIAMETER TEST RUN BETWEEN , ~ FT AND (~ FT /k,/j j~ ~, J~ .~ )¢¢ ,,(J ~; S ~/' CERTIFY THAT THIS TEST WAS PERFORMED IN COMMENTS PERFORMED BY: ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. 77-f'~3R fRov 4/PR1 N