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Home My WebLink AboutCHRISTOPHER HEIGHTS #1 Lots 1A & 1B (Proposed) Stephen Morris Dept. of Health & Human Svcs. Municipality of Anchorage April 1,1986 re: Proposed Christopher Heights Addn 1, Lots lA & lB Dear Mr. Morris, As you requested the following is a summary of the soil conditions on the above mentioned two lots. Figure A shows the location of seven test pit locations. The soils log of test pits 1,3,5, & 6 are enclosed. Test pits 2 & 7 are both similar with 18" of omganics overlaying silt to a depth of 12 feet. Test pit 4 was dug to check the status of the abandoned creek. T.P. 4 consisted of 30" of peat overlaying silty clay to a depth of 9 feet. Test pits 2,7, & 4 were dry at the time they were dug however they are not suitable for on-site septic systems due to high perk rates and/or silty clays. The existing single family residence on lot lA is situated on a knoll which slopes downward toward the North, East & West. The test pits (1,3 & 6) taken on or on the side of this knoll have gravels or sand present. The other test pits taken the lower areas all have silts or clays present. Based on bo~h the topography and the soils data available I estimate the area that would be suitable for on-site septic systems weuld be that area west of the abandoned creek and south of an east-west line drawn between test pits 1 & 3. Should you have any questions or want to coordinate a field inspection please contact me at 345-7008 WHITEWATER ENGINEERING CONSTRUCTOR CANGE ROAD · ANCHORAGE, AhASKA · 995 6 · PH. 345-?008 Stephen Morris Dept. of Health & Human Svcs. Municipality of Anchorage 4/15/86 re: Proposed Christopher Heights Addn. 1, Lots lA & lB Dear Mr. Morris On proposed lot lB there is a low area that a "creek" used to run through. During last summer (1985) the owner/developer built Regina drive and installed a 12" C~.M.P. paralleling the road. This road and C.M.P. intercepted the old creek uphill from Lot lB. The creek was diverted into this 12" C.M.P. which outfalls 300+ feet downhill from Lot lB. There was also a subdrain installed along the south border of the property (Lot lB) which intercepts surface water,that runs downhill after a rainstorm. Runoff from the road surface will flow down the drainage ditch paralleling the road. To make a long story short, there is no longer a creek running through the middle of Lot lB Christopher Heights Addn. 1 as it has now been diverted. Should there be any questions please contact me at 345-7008 MUNICIPALITY OF ANCHORAGE DEPT. OF HEALTH & ENVIRONMENTAL PROTI~CTtON APR ] (3 ~ RECEIVED sincerely, 'is~cher~p E~g~~ - WHITEWATER ENGINEERING CONSTRUCTOR 11600 CANGE ROAD · ANCHORAGE, ALASKA ' 99516 · PH. 345-7008 SO LS LOG PERFORMED FOR: LEGAL DESCRIPTION: 2 3 4 5 7 8 10 12 14 I L SOILS LOG-- PERCOLATION TEST --. SLOPE SITE PLAN IF YES, ATWHAT '"ttI Li DEPTH? I 'Z Net I Depth to Net Reading Time Water Drop Gross Date Time I PERCOLATION F~ATE TEST RUN BETWEEN FT AND COMMENTS [] 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 20 COMMENTS -- PERCOLATION TEST SLOPE -' SITE PLAN THOM A. CE - 6793 WAS ~-RO.ND.ATE" E.COUNTE.ED? ~(:3 ~ O P IF YES, AT WHAT ~ DEPTH? Gross Net Depth to Net Reading Date Time Time Water Drop / PERCOLATION RATE TEST RUN BETWEEN PERFORMED BY: CERTIFIED BY: DATE:~[~_.~'.~-- PERFORMED FOR: MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAI~ PROTECTION 125 I. ~t. Am:lmm~. Al~k~ ~8501 ~4.4720 PERCOLATION TEST SOILS LOG - PERCOLATION TEST,, '~ ¥, .'~', ~-, C', .4. . DA" TE '"FORMED- LEGAL DESCRIPTIoN:T tq~ ~l~, R 3 i~j ,~.c'~a'Oh 1 18-; ' ' 19 p,/, ,;;IV' ~ 3; P,,,.ce I. SLOPE SITE PLAN S WAS GROUND WATER Ye E. CO.NT;RED /,/, _ DEPTH~ R~ding I:~te Gross Net D~IDt h tO Net Time Tm~ W&te~ D ~ +N;o ~~/=/~;~'~ . -~* ~;3q I0 ~.nL .+o .,~+ · ~ o~/ '' ~NaO a ~/~3 ~3~ ~o,;~ .~o .o~, ~ " / r ./, ,../ ,i // 87~ 0 MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 825 g Street, Anchorage, Alaska 99501 264-4720 SOILS LOG - PERCOLATION TEST PERCOLATION TEST PERFORMED FOR: LEGAL DESCRI PTION:~, 4 5 6 7 8 9 10 11 12 13q' ~ 18- t9- 20 -J ,,, DATE PERFORMED: COMMENTS SI.OPE SITE PLAN WAS GROUND WATER I~ [ ENCOUNTERED? 0 P E IF YES. AT WHAT DEPTH? Reading Date I Gross Net Depth to Net Time Time Water Drop '~,:. '-- i::~'f /~, ~?~ '/~:/~,' g: z o I: '--o ~z."/4:, ff + ~RCOLATION RATE ~,~" .(.inuteslinch) TEST RUN BE~EEN -- FT AND -- FT PERFORMED FOR: SOILS LOG - PERCOLATION TEST ~ SOl LS LOG PERCOLATION TEST DATE PERFORMED: ['~,/~-/~/~ LEGAL DESCRIPTION: SLOPE SITE PLAN 10 11 12 13 14 15 .16 17 18 19 20 .COMMENTS THOM A. FISCHI '.. CE- 6793 ." ee I WAS GROUND WATER ~.~ ~ S ENCOUNTERED? L O P E IF YES, AT WHAT DEPTH? Gross Net Depth t,3 Net Reading Date T~me T~me Water Drop PERCOLAT 0,~ RATE (m,nutes/mch) TEST RUN I~.~?WEEN FT AND FT 5q4.~o a.F. / I0 5 4-% OOP-. ~ .F, 5 .L '( I l2 l FND ..RJ/4'' I~.C. ivl~14 (ZE~.C. ~01 l.J LOG PEHCOLATION TEE;T SOILS LOG - PERCOLATION TEST PERFORMED FOR: LEGAL DESCRIPTION: 2 3 4 5 6 7 11 I c +~To~ W~~ SLOPE WAS GROUND WATER E.COU.TERED~ 12 13 IF YES, AT WHAT DEPTH? 14 Gror~ Reading Date Time SITE PLAN Net Depth lo Net Ti ,~e Water Drop 15 16 17 18 % THOM A. 19 7,. CE-6793 COMMENTS PERFORMED BY: .~' J.,J.Jl:=~, .'C,,j~_._ .__ PERCOLATION RATE TEST RUN BETWEEN / __(minutes/inch) ..~ND .... FT o CERTIFIED BY: DATE:_~~ I I~00 CANG£ RD. ANCHORAGE, ,~IK. ~51~ SOILS LOG PERCOLATION TEST PERFORMED FOR: LEGAL DESCRIPTION: 3 4 § 7 SOILS LOG - PERCOLATION TEST SLOPE SITE PL,~N WAS GROUND WATER S ENCOUNTERED? ~--____~ L 0 IF YES, A~_ WHAT ' DEPTH? 16 17 18 19- 20- Gross Net [)epth to Net Reading Date Time Time Water Drop i~o,;, ~7~":~z ,, ~/~ ,. ~ ',~..,o z~.~,, z,~'%.. PERCOLATION RATE , {m,nutJslinchl , (: PERFORMED BY: t~ ~' ~~ CERTIFIED BY: ~~~ / 1600 C,~!It$£ RD. ,4NCHOR~I6E , ,4K. ~516 (907) ..=45-~ SOILS LOG PERCOLATION TEST PERFORMED FOR: ~ ~ F ~~~~ DATE PERFORMED: SLOPE 1 2 3 4 5 6 7 8 9 10-- 11 WAS GROUND WATER ENCOUNTERED? O P IF YES, AT WHAT ! E DEFTH? 1%''~ Gross Net Depth to I Net Reading Date Time Time Water Drop PE,RCO LATIO N RATE (minutes/inch} TEST RUN BETWEEN FT AND FT COMM E NTS PERFORMED BY:...-""""~' ~ .~ ~C.t't"~'"Z- CERTIFIED BY: __ DATE: Feb. 3, 1986 Ms. Susan Oswalt Dept. of Health Municipality of Anchorage Re: Christopher Heights Add. No. 1 Attached please find a copy of the Septic Zone and well locations for three additional lots in the existing subdivision as shown. Note the square footage on the attached sheet showing needed and available square footage for septic disposal. Please note that on some lots the placement of the house is not a critical issue due to the excess in square footage available. Well locations will be shown on the final plat and on those lots where area for septic disposal is an issue, the area will be defined on the final plat. If you have any questions, please contact our office. ,-~Sb~rt Quarter¢~n ~Draftsman ENGINEERS PLANNERS SURVEYORS LANCI TECHNOLOGIES, I. II~IITEO 440 W. BENSON, SUITE 2~04 ANCHORAGE, AK 99503 [907] 562-5291 PERFORMED FOR: LEGAL DESCRIPTION: 1 2 3 4 5 6 7 8 9 · '"'. ~c~ -5~ ~ , MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 125 L. ~trNt. Anch~.~,, Ak.ka 11501 ~4.4720 PERCO TEST SOILS LOG -PERCOLATION TEST DATE PERFORME~~ ,OPE SITE PLAN 10 11 12 13 14 15 16 17 18 19 WAS GROUND WATER fl0 ~- ENCOUNTERED? _ "'(~ P E IF YES. AT WHAT DEPTH? Net Drop 20 PERCOLATION RATE ] . TEST~,RUN BETWEEN Steve Morris Dept of Health & Human Svcs Municipality of Anchorage 2/11/86 re: soils in Lot 2 Block 1 Christopher Heights Addn 1 Dear Mr. Morris The developer is interested in subdividing the above mentioned lot into two seperate lots. The lots will have on-site septic systems and wells on them. Attatched are three soils tests. The test pit performed on 1/18/85 is on the proposed southern lot, the other two are on the proposed northern lot. The proposed southern lot has a favorable perk rate on it with no water or moisture present. The northern lot has a high perk rate on it, however it was dry with no moisture present. The developer dug a second test pit three weeks later to check for water. This test pit was also dry with no moisture present. It is my oppinion that these lots would be suitable for on-site septic systems. At one time there was a question on possibly requiring a 100' setback from either the drainage ditch on the west side of Regina Drive, or the old "creek". There is not any water (or ice) in either of those two places. Typically if there were water or moisture in a ditch there would be quite a sizeable glacier, especially with the weather conditions we've had this particular winter. A 100' setback is inapropriate and not needed in this proposed lot split. Should there be any questions please contact me at 345-7008. Sincerely, Thom A Fmscher P E WHITEWATER ENGINEERING CONSTRUCTOR 11600 CANGE ROAD ' ANCHORAGE, ALASKA ' 99516 · PH. 345-7008 SOILS LO~ PERFORMED FOR:_ LEGAL DESCRIPTION: 3 4 10 ;LOPE ' SITE PLAN iL-il! i / I R'cFII \i\ I WAS GROLJND WATER ENCOUNTERED? IF YES, AT WHAT DEPTH? Readin9 Date · ~; .............. THOM A. FISCHE~ TEST RUN BE~¢¢EEN Gross Net Depth to Net 'T;me Time Water Drop , FT ANE) _ !=9' COMMENTS SOILS LOG PERCOLATION TEST SOILS LOG - PERCOLATION TEST PERFORMED FOR: SLOPE SITE PLAN 10 11 12 13 WAS GROUND WATER ENCOUNTERED? IF YES, AT WHAT DEPTH? Reading Date Gross Time Net Depth to Time Water Net Drop So TEST RUN BETWEEN ~0 (minutes/~nchi ~ FT AND ~ ¢T COMMENTS PERFORMED B Y: ""'~'--~ ~'~,,-. CERTIFIED BY: