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Home My WebLink AboutJANET DAVIS Lots 1-3 Plat# 85-294 S-7673 MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH & ENVIRONMENTAL PROTECTION Environmental Health Division CASE REVIEW WORKSHEET CASE NUMBER: DATE RECEIVED: S-7673 May 16, 1984 SUBDIVISION OR PROJECT TITLE: Lots 1, 2, 3 Janet Davis Subdivision ~'Y~)~UBLIC WATER AVAILABLE ) COMMUNITY WATER AVAILABLE COMMENTS DUE BY: June 1, 1984 (/~f~PUBLIC SEWER AVAILABLE COMMENTS: "~ 'RVEYOR'S CERTIFICATE_ :i 2bert C Johnson, professional land survey~ do hereby ced/fY that the plat of .¢k~ ~ ~ ~ F~H'm~ ~Icrt~ ~u~. is o true ond carted representation of lands ' ~1~ su~eyed and that all distonces and bearings ore sho~ correctly and thd all ' ~onent e~ior control ~numen~ all other monuments, ond lot c~ners hove been '~nd s~ked~ d Bnalcompletion is ossured by subdivision agreement~ they ~ill ~et o~ s~c/fied in sold subdivision agreemant . _ ? pL./N-IF OF: ':,i :'" : ROBERT C. JOHN.~ON; R.L.S. PROFESSIONAL LAND- SURVEYOR Box 456 Eegle River, Alosko 99577 0 'S'7 67.3' JUN 04 1984 PL/kT :fl: '-/5-11,4- 1,100°0£' ~" W FND qq ~. 0~' ~. qqo. ~Z~ ~.10' 'PO D~Iv~ ~ ~-lqQ O0 170.01' .... ,q-~I'O.O0' -'v-m ~,, Rq CHECKLIST SUBDIVISION tLEVIEW Case # Subdivision Zoned Date WASTEWATER DISPOSAL Public Sewer Community Onsite Sewer S~ingle- family Onsite Soil tests stamped by engineer, signed, dated, identified, etc.; Sufficient soil tests to characterize minimum of 50% of subdivision in probable absorption field areas; Soil test locations accurately identified; Perc test data adequate; Groundwater monitored for 90 days, with last month occurring between June 1 and October 15; Accurate topographic map; Slope <25% in general region of original and replacement sites; D.E.C. approval of community system plans (if applicable); Bedrock outcroppings or shallow depth to bedrock; Sufficient setback from creeks, major drainages, other water bodies; Sufficient setback from cutbank or bluff; Sufficient setback from probable private well locations; Sufficient setback from community well(s); Sufficient setback from curtain drains; Curtain drains installed and ground water monitoring results shown; Thorough site visit (walk-through) completed; Minimum proposed lot size meets with DHEP and Zoning criteria; One original plus two rePlacement sites delineated for each lot,~ while maintaining all separation distances between replacement sites, property lines, water supplies, water bodies, probable building structure location, cutbanks, bluffs, etc., and in areas having less than 25% slope; WATER SUPPLY Public Water Community Water ~$ingle-family Wells D.E.C. approval of community water supply; Known water supply problems in the area; Water rights applied for from DNR for community wells; Meets all separation distances; Sources of contamination identified (dumps, chemical storage sites, etc.; Adequate water supply and acceptable water quality; Review conducted by KB5/ej/D18 Date Architecture · Engineering · Land Surveying · Planning 2515 "A" Street September 24, 1984 Anchorage, Alaska 99503 1682 (907) 276-4245 Mr. John Lynn Municipality of Anchorage Department of Health and Environmental Protection Pouch 6-650 Anchorage, Alaska 99502 Re: S-7673 Janet Davis Subdivision Lots 1-3 Dear Mr. Lynn: USKH has completed a soils investigation of the above-captioned property for the purpose of determining suitability for the use of on-site wastewater disposal systems. Our findings are as follows: e e Please do Elevations on the property range between approximately 561 feet above MSL on the southwest corner to approximately 719 feet above MSL on the northeast corner. The average slope on the property is greater than 20%; some areas have slopes greater than 25%. Alt'test~holes were located in areas where the'local slope is-less-than 2§%* Soil testing was performed using a track-mounted Nodwell auger rig. One test hole was drilled on each lot, as shown on the attached exhibit. No bedrock was encountered in any of the test holes. No groundwater was encountered in any of the test holes. Soils log and mechanical analyses (attached) indicate the soils consist of sandy gravels in the GW-GM classifications. Accordingly, no percolation tests were needed to confirm that the soils are suitable for on-site systems. not hesitate to contact me if you have any questions. Sincerely, Principal EDK:RC:lz Attachments Gordon D. Unwin, P.E. Leo yon Scheben, Jr., P.E. ,L.S. Earl D. Korynta. P.E. James A. Huettl, A.I.A. Gary H. Pohl, A.LA. 7 / O. DRIVE E I/2E 1/2 NW 1/4 SW 1/4 NW 1/4 BLM. PATENT BK. 337 PG. 90 ~Z SOILS LOG SHEET._~OF PROJECT ~'Pu'V~"/" D,qlJI.R CLIENT w.o. 1~8:2 TEST HOLE NO. ~, ELEV. TOP OF HOLE DATE NO ~IZOUNC~ UNWIN m SCHEBEN · KORYNTA = HUETTL 2515 A STREET ANCHORAGE, AK. 99503 275- ~1.2z~5 A lask _ e_stla_b ............................................................................. ®, 4040 "B" Stree! Anchorage, Alaska 99503 Phone (907) 562-2000 Telecopler (957) 563-3953 MECHANICAL ORAIN SIZE ANALYSIS SHEET 3 OF 5 FOR SAMPLE: 3452 .......................................... WORKORDER NO. A~2!21 JOB NO. PROJECT: JANET DAVIS SUBDIVISION LOCATION: TH G-i-D, ~i682 DATE RECEIVED: 26 JUL 1984 DATE TESTED: 27 JUL 1984 FROST CLASSIFICATION: UNIFIED CLASSIFICATION: TEXTURAL CLASSIFICATION: COEFFICIENT OF UNIFORMITY = 87.8 PERCENT SIEVE PASSINO 3 INCH 100 2 INCH 100 I ~/2 INCi4 100 1 INCH 98 3/4 INCH 94 1/2 INCH 78 3/8 INCH 65 NO 4 47 NO lO 33 NO 20 24 NO 40 18 NO 60 15 NO 100 12 NO 200 9.3 O. 060MM 8.7 O,O~OM~ 8,6 O. 040MM 8.2 O. 030MM 7.1 O. 020MM 5.9 O. O12MM 4.9 F1 ~P-OM SANDY QRAVEL COEFFICIENT OF CONCAVITY = 3.7 ' .~ASKA IESILAB 6RAIN SIZE ANALYSIS · Client US Sample"Number Location T~')i, Sample ]aken By Frost Class Unified Class lextural Class Date Received Fractured No. Non-Fractured IOTAL [] +4 FI double Face [] weight Cum. Wt. Cum. lota~ Screen Retained % Passing 3" 2" 1-~/2,, tO IOO ~/2,, ~.~ #4 Pan (-#4) Iota1 D~y : Sample Wt Cum, Wt, Cum, lotal Screen Retained % Passing O. 02 mm Hyd~om, -200 Pan Afte~ W~sh 25~-5 / Sample Moisture Content Pan No. Wet Weight Dry Weight % Moisture Fine Base Course or Concrete Aggregate Sieves Cum. Wt.!Cum. % Screen Retained! Passing, ~8 ~16 tt50 #100 -200 Pan After ~ash Initial Sample Sheet of w.o, # Date ~echnician~ Atterberg Limits: Liquid Limit Plastic Limit [] +10 [] single face [] count lest Samp!e Pan No._.~,~.~'~ lare & Dry late Wet Weight Dry Weight~~ Hydrometer No. Net I lime ofF Timel (Hin.) R Corr o 'x. - ¥ ~0 ' ~0 120 25O 48O 1440 PROJECT .~,~/,4j~"l-O~l.~ .S/~RD,TEST HOLE NO. ~- Jo D CLIENT ELEV. TOP OF HOLE +- W.O. / ~o ~ 2- DATE '~ '"' ,,~-. ~' - ~ ~ UNWIN m SCHEBEN m KORYNTA o HUETTL 2515 A STREET ANCHORAGE, AK. 99503 P7S-,o,:::'45 la ka_. _Testla b ...................................................................... 4040 "B" Street Anchorage, Alaska 99503 Phone (907) 962-2000 Telecopler (907) 563-3953 MECHANICAL QRAIN SIZE ANALYSIS SHEET 2 OF 5 FOR SANPLE: 3~51 .......................................... WORKORDER NO. A22121 dO~ NO. PROdECT: dANE~ DAVIS SUBDIVISION LOCATION: TH 2-l-D; ~1682 DATE RECEIVED: ~6 JUL 1~8~ DATE TESTED: 27 dUL 1~84 FROST CLASSIFICATION: UNIFIED CLASSIFICATION~ TEXTURAL Ci_ASSIFICATION~ COEFFICIENT OF UNIFORMITY = 40.6 PERCENT SIEVE PASSINQ 3 INCH 100 2 INCH iO0 i 1/2 INCH i00 1 INCH 100 3/~ INCH 1/2 INCH 74 3/8 INCH NO 10 21 NO 20 15 NO 40 NO 60 10 NO 100 8 NO 200 6.1 O.O&OHH 5.6 O. 050HH 5.6 O. O40HH 5.3 O. 030MM 4.5 O. 020HH 3.7 Fi SANDY ORAVEL COEFFICIENT OF CONCAVITY " _A%KA iESlLAB GRAIN SIZE ANALYSIS Project Client Sample Number Location Sample Taken 8~ Frost Class Unified Cla~s lextural Class Date Received Fractured No. Non-Fractured IOTAL lCum. Wt. ICum. lotal Screen IRetaine~[% Passing 1-1/2" 1II 314" 112" 5/8" #~ Pan (-#4) Total Dry Sample Wt Screen #10 #20 #4O #60 #100 #2OO 0.02 mm H)-drom. -200 Pan AFter Initial Sample o to0 ILO L~,O iCum. Wt. Cum, lotal 'Retained % Passing 1/9.7 [] +4 [] double Face [] weight Moisture Content Pan No. wet Weight Dry Weight % Hoisture Fine Base Course or Concrete Aggregate Sieves Cum. Wt Cum. % Screen Retained Passing #8 #16 ,#~0 #~0 #100 #200 F.H, -200 Pan After Wash Initial 5ample Sheet of W.O. # Date T echnician/O~ ) Atterberg Limits: Liquid Limit Plastic Limit [] +10 [] single face FI count lest Sample Pan No.../~ lare & Dry.. late' Wet Weight Dry Weight Hydrometer No. ? Net I Raw 1 ime iime (Min.) °~ R Corr. ~0 60 120 250 480 1440 / PROJECT 3"~N~T' DI~VI $ 5UllZra CLIENT w. o. TEST HOLE NO. ! ELEV. TOP OF HOLE DATE -~-- ~. _~ -' 5,~N Dy ~,-t~A V E./.... UNWIN m SCHEBEN m KORYNTA m HUETTL 2515 A STREET ANCHORAGE, AK. 519503 P70 4040 "B" Street Anchorage, Alaska 99503 Phone (907) 582-2000 Telecopier (907) 563-3953 MECHANICAL ORAIN SIZE ANALYSIS SHEET 1 OF 5 FOR SAMPLE: 3450 .......................................... WORKORDER NO. A~212i dO~ NO. PROUECT: UANET DAVIS SUBDIVISION LOCATION: TH i-2-D, ~i682 DATE RECEIVED: 2& JUL 1~84 DATE TESTED: JUL 1984 FROST CLASSIFICATION: UNIFIED CLASSIFICATION: TEXTURAL CLASSIFICATION: COEFFICIENT OF UNIFORMITY = &7. 1 PERCENT Fi ~P-~M SANDY ~RAVEL COEFFICIENT OF CONCAVITY SIEVE PASSINO INCH lO0 INCH lO0 1/2 iNCH 100 INCH ~& 3/4 INCH 91 1/2 INCH 75 3/8 INCH 62 Nf] 4 40 NO lO 25 NO 20 18 NO 40 14 NO 60 12 NO 100 10 NO 200 8.4 O. 060HM 7.7 O. 050~M 7.7 O. O40MN 7.4 O, 030HM 6.4 O. 020MM 5.6 O. O12MM 4.4 . .ASKA IESILAB GRAIN SIZE ANALYSIS Project Client Sample-Number 'Location -F~ Sample laken BI . Frost Class Unified Class Textural Class Date Received Fractured Non-Fractured 'lOlAL [-] +4 ~] double face [] weight ICum. Wt. Cum. lotal Screen IRetained % Passing 2" ~ -~/2" 0 P~ (-#~) Ioo9,~. lotal D~y Sample Wt Cum. Wt. Cum. Iota1 Screen Retained % Passing #60 ~, ? / ~ #~oo ~ gO. G #zoo I~Z, F ~, ~ O, 02 ~m Hydroa, -200 Pan I c~ ~. ~ After Wash )fl3-5 I~itial 5ample ~[~-5 C Moisture Content Pan No. Wet 'Weight Dry Weight __ % Moisture Fine Base Course or Concrete Aggregate Sieves Cum. Wt. Cum. % Screen Retained Passing #8 #16 I;30 ~ #50 #100 #200 -200 Pan Afte~ Wash Initial Sample Sheet o f W.O. #~ I 2 f Date 7-Z7-~ lechnicia%') Atterberg Limits: Liquid Limit Plastic Limit ~] +10 [] single face [] count lest Sample Pan No.~_.¢,'q~/~)~~' ]are & late' Wet Weight Dry Weigh t//o~, Hydrometer No. Net ~/ Raw 'lime lime (Min.) R Corr. 2S) 2 "' ' 30 ~ ¢ 120 25O 48O 14~0 .b Alaska Testlab 4040 "B" Slree! Anchorage, Alaska 99503 Phone (907) 562-2000 Telecopler (907) 563-3953 JUL 1984 U.S.K.W. ENQINEERS 2515 "A" STREET ANCHORAGE, AK ATTEN: RiCK KINQ PROJECT: SUBJECT: JANEt DAVIS SUBDIVISION U.S.K.H. ENGINEERS MATERIALS ANALYSIS SAMPLE DATE: 2& JUL 1984 GENTLEMEN: TRANSMITTED HEREWITH ARE THE RESULTS OF SIEVE ANALYSIS PERFORMED IN OUR LABORATORY ON THE SUBJECT SAMPLES. THE METHOD USED WAS ASTM C-13& <AASHTO T-~7), "SIEVE ANALYSIS OF FiNE AND COARSE AGGREGATES," THE MOST CURRENT VERSION. THE QRADATiONS HAY BE FOUND ON SHEETS i THROUGH G OF 5 SHEETS ATTACHED HEREIN. IF THERE ARE ANY QUESTIONS IN THIS REGARD, PLEASE CONTACT OUR OFFICE. VERY TRULY YOURS, ALASKA TESTLAB R. MARK HANSEN, P.E. SOIL TEXTURAL CLASSIFICATION CHART GRAVEL 30% :LAY CLAYE~ OR SILT'~ SAND SIL3 GRAVEL I0 GRAVELLY SAND GRAVEL 20 :50 4.0 50 60 70 80 90 GRAVEL (+ ¢4 SCREEN) % BY WEIGHT I00 FROST CLASSIFICATION SYSTEM NONFROST SUSCEPTIBLE SOILS ARE INORGANIC SOILS CONTAINING LESS THAN 3% FINER THAN 0.02 mm. GROUPS OF FROST-SUSCEPTIBLE SOILS: F1 GRAVELLY SOILS CONTAINING BETWEEN 3 AND 20% FINER THAN 0.02 mm. F2 SANDY SOILS CONTAINING BETWEEN 3 AND 15% FINER THAN 0.02 mm. F3 a. GRAVELLY SOILS CONTAINING MORE THAN 20% FINER THAN 0.02 mm. AND SANDY SOILS (EXCEPT FINE SILTY, SANDS) CONTAINING MORE THAN 15% FINER THAN 0.02 mm. b. CLAYS WITH PLASTICITY INDEXES OF MORE THAN 12, EXCEPT VARVED CLAYS. F4 a. ALL SILTS INCLUDING SANDY SILTS. b. FINE SILTY SANDS CONTAINING MORE THAN 15% FINER THAN 0.02 mm. c. LEAN CLAYS WITH PLASTICITY INDEXES OF LESS THAN 12. d. VARVED CLAYS.