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Home My WebLink AboutSOUTHPARK #3 Block 1 Lots 7-9 S-7862 MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH & ENVIRONMENTAL PROTECTION Environmental Health Division CASE REVIEW WORKSHEET CASE NUMBER: DATE RECEIVED: COMMENTS DUE BY: S-7862 September 28, 1984 October 12, 1984 SUBDIVISION OR PROJECT TITLE: Lots 7 - 9 Block i Southpark Subdivision Addition '[' I ~/) COMM~tNITY W.~I-EW~;tLAJBLE , #3 ~ TH-B N $O.,flL~' I'~100' TH- E TF'ACT C TH-B N SCALE I'~--I00' MEMORANDUM DATE: October 11, 1984 TO: Community Planning Department FROM: Health and Environmental Protection Department SUBJECT: Cases Due for Review - October 12, 1984 The Environmental Health Division of the Department of Health and Environmental Protection Department has reviewed the following cases and has these comments: S-7858: S-78o2. Campbell Woods Subdivision - Vacation only - Revised This Department has no objections to the vacation. Lots 7 - 9 Block 1 Southpark Subdivision Addition #3 This Department requests an additional soil test taken.in a suitable area for disposal on Lot 8. We will also require 90 day water monitoring on all three(3) lots(the last month of monitoring must occur between June 1 and October 15). The Department will require a copy of the State of Alaska, Department of Environmental Conservation Certificate to Operate a public water system prior to final plat approval. S-7863: Lots 10/ 33 Block 1 Southpark Subdivision Addition #3 The Department will require 90 day water monitoring on both lots(the last month of monitoring must occur between June 1 and October 15) o We will also require a copy of the State of Alaska, Department of Environmental Conservation Certifica~to Operate a public water system prior to final plat approval. S-7864: Tracts A, B, H Timberidge Subdivision Public sewer and water is available at the proposed subdivision and must be utilized. S-7865: Lots 3A, 4A Block 6 Granite View Subdivision Addition #1 Public sewer and water is located at the proposed subdivision and must be utilized. S-7866: Tracts 2-A, 2-B International East Subdivision Public sewer and water is located at the proposed subdivision and must be utilized. S-7867: Lot 1SA Block 3 Lake.S~enard Park Subdivision Public sewer and water is already at the property. 91-010 (4/76) SOUTHCENTRAL REGIONAl_ OFFICE 437 "E" STREET, SUITE 200 ANCHORAGE, ALASKA 99501 274-2533 August 24, 1984 Dan Green Triad Engineering 6937 Old Seward Hwyo Anchorage~ Alaska 99501 Dear Mr® Green: Subject: South Park S/8 Addition 2 Water Improvement 8521~FA-040 We have reviewed the plans and specifications for the subject project° The project is hereby approved for construction for the items w-ith which this Department is concerned° This letter constitutes the permit required by AoS, 46.03o720(a) for approval of sewerage systems° Enclosed with this letter is a "Certificate To Construct" for the drinking water system° The "Approval to Operate" section of the certificate must be completed by a representative of this Department prior to placing the system in operation° It should be remembered that final approval will necessitate the submission of Engineer As Built Plans, This will consequently mandate that a private professional engineer conduct basic inspection of this project so as to be able to sign off on as built plans° Arrangement for this inspection work 'is the responsibility of the developer, Si,~/~erely, ~ ~:'/ Environmental Engineer BEE/dd Enc l osu re 'ALASKA " UIFmrlmerITAL COIqTROL August 30, 19'84 InC. $ 7,8 6 2 OCT 1 5 1984, Mr. John Berggren 16420 Saint James Anchorage, Alaska 99509 Dear Mr. Berggren: On August 22, 1984, Alaska Environmental Control Services Inc., performed five soils tests on Tracts C and'E, South Park Subdiviszon, to see if soils suitable for on-site septic systems could be found. A small backhoe was used. The soil logs for each test hole, and maps showing the locations of all the holes in the Tracts, are enclosed. LocATIoN These Tracts are adjacent to South Park Subdivision, located within NW 1/4 Section 3, TI1N, R3W, SM. Tract E is on the west of Terrace Wood Lane, and Tract C is on the east. LANDFORMS AND VEGETATION Tract O slopes gently uphill to the east, then abruptly upwards as the east border of the Tract is approached. Tract E is fairly flat, with one slope over 25% abruptly starting near the northeast corner of the tract. Vegetation includes spruce, birch, and devils club. SOILS CONDITIONS Five test holes were done, at fairly evenly spaced intervals. Good soil was found in each test hole -- all soils were rated at less than 190 square feet per bedroom. Four of the holes had visually rated sands and gravels. Percolation tests were performed in tPo of the holes, with excellent results. The problem with the Tracts is the high water table. Water was encountered in every test hole, generally around 7 feet, although it was at 10 feet for TH-D which is a little higher in elevation. A table below shows the change in the water table over a week, in three cases, it rose. Test Hole H^0 level H.0 level z8~22-84~ z8-29-84 A 7' 7`// B 7 5.5/ c 8 4~/ D 10 i0 E 7.5 5 1200 [~]esl 33r~ Aucnu¢. Suil¢ B. Anchoroq¢. Alos~,o 99503 · [907) 561-50q0 RECOM/~ENDED SYSTEMS Because the slopes are gentle and the water table high, shallow beds or 5-wides could be installed'for septic systems built at the test hole locations, ~in dra~!~ ~ l~ower t~he water~ tabl~ m___~ht be possible_~ but expensive, since a very long run of pipe would be necessary to daylight because of the gentle slopes. It might be better just to build the systems 4 feet above the water table. If homes are built uphill of the systems, lift stations could be avoided in most cases. '%-~-/h~ case of.t~s-t..h~'~-Di-a-~'~--~tatzon--~-~l~--b~--n~e~sary, because the test was done at a high point on the lot, and there is not room to build a house at a higher elevation. In the case of test holes B, C, and E, engineered designs will be necessary. Fortunately, the soils ratings are all so low that the septic systems will be relatively small, thus keeping costs CONCLUSIONS Five test holes were performed on Tracts C and E, South Park Subdivision. Although a high water table was found in each hole, the soils are excellent. Septic systemsf could be installed at each test hole location. Sincerely, Darcy ~evens Engineering Geologist Appr ove~y~ / MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 825 L. Street, Anchorage, Alaska 99501 264-4720 SOILS LOG - PERCOLATION TEST fSOILS LOG [] PERCOLATION TEST 5 PERFORMED FOR= LEGAL DESCRIPTION: SLOPE DATE PERFORMED: "Z'c~+ l-~lc SITE PLAN 10- :'13- 16- 17- 18- 19.- 20- WAS E ROUND WATER ENCOUNTERED? C~ 0 ~-' o,. ~-'~'~ ~ IF YES, AT WHAT DEPTH? '~( Gross Net Depth to Net Reading Date Time Time Water ~ PERCOLATION RATE (minutes/inch) COMMENTS ~%,,' ! '~m -EST Rur~ BETWEEN FT AND . FT rr~ o~y CERTIFIED BY: ~. PERFORMED BY: 2-008 (6/791 · .,, ;,~. MUNICIPALITY OF ANCHORAGE " ~/~e'~"~,-~,~'~ - DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 825 L, Street, Anchorage, Alaska 99501 264-4720 SOILS LOG -- pERCOLATION TEST [] PERCOLATION TEST PE.FORMED FOR: LEGAL DESCRIPTION: DATE PERFORMED: 5 6 7 8 9 10 11 12- 13- 14- 15- 16- 17- 18- 20- SLOPE WAS GROUND WATER ENCOUNTERED? SITE PLAN S L O P E Gross Net Depth to Net~ Reading Date Time Time Water PERCOLATION RATE TEST RUN BETWEEN CERTIFIED BY: y72-008 (6/79) , (minutes/inch) · FT AND , FT /s-o ~'.//,_ , / MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 825 L. Street, Anchorage, Alaska 995(~1 264-4720 SOILS LOG -- PERCOLATION TEST {~: SOILS LOG' PERCOLATION TEST PERFORMED FOR: LEGAL DESCRIPTION: OL 1 2 3 4 5 6 7 8 9 DATE PERFORMED: ~.~ ' '~-- ~5~'/ SLOPE SITE PLAN 10 13- 14- 15-' 16- 17- 18- 19- 20- COMMENTS d PERFORMED ~2~7~-008 (6/70) WAS GROUND WATER S ENCOUNTERED? ~"~ ~ S OL IF YES, ATWHAT~-~{/'~t/~f'I ~'~7~-ff E DEPTH? Gross Net Depth to Net Reading Date Time Time Water Drop Io~q II ~ I . iq C~ /o ~'~" PER LATION RATE /oY"¢- i ')~ TEST RUN BETWEEN ~ FT AND - / ~ // /I 7o ID (minutes/inch) 'SOILS LOG MUNICIPALITY OF ANCHORAGE [] PERCOLATION DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION TEST 825 L, Street, Anchorage, Alaska 99501 264-4720 SOILS LOG -- PERCOLATION TEST PERFORMED FOR: LEGAL DESCRIPTION:' 2 4 ? 10 14 20 SLOPE SITE PLAN WAS GROUND WATER ENCOUNTERED? IF YES, AT WHAT DEPTH? Gross Net Depth to Net Reading Date Time Time Water V:~,~ PERCOLATION RATE (minutes/inch) TEST RUN BETWEEN FT AND F? COMMENTS ..~',~,' ( ' ' 0 72-008 {6/791 / / / MUNICI~PALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 825 g Street, Anchorage, AIaska 99501 264-4720 SOILS LOG -- PERCOLATION TEST SOILS LOG PERCOLATION TEST PERFORMED FOR: LEGAL DESCRIPTION: I 2 3 4 5 6 7 8 9 10 11 13- 14- 15- 16- 17- 18- 19- 20- SLO?E DATE PERFORMED: SITE PLAN WAS GROUND WATER ENCOUNTERED? IF YES, AT WHAT DEPTH? Gross Net Depth to Net Reading Date Time Time Water Drop :'~ /~vo t~ ~,~ ,~.3 PERCOLATION RATE ~''~' ~ F~ ANO TEST RUN BETWEEN to (minu~es/inch) .,~,'v.-*~.-' FT COMMENTS PERFORMED BY~ ~,~,~ CHECKLIST SUBDIVISION REVIEW Su division Zoned WASTEWATER DISPOSAL Public Sewer Community Onsite Sewer ~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 ~opographic 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 ~ ~S Public Water Water ingle-family D.E.C. approval of community water supply; Known water supply problems in the area; Wells 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/Di8 Date 'ALASKA ei dlROFImeFITAL COIqTROL ~nqineerinq ~, ~nuironmentnl Studies $1 I uiC1 $, IF1C. Noverrber 1, 1984 Mr. John Lynn Department of Health and Environmental Protection 825 L Street/Fourth Floor Anchorage, Alaska 99501 Dear John: Here are the results of the water monitor program for Test Hole C, Tract C, South Park Subdivision. TEST HOLE C Water Level Water Level Water Level 8/22/~84 8/29/84 10/30/84 TDe water taDle has come up suDstantially. ~o lower the water taDle so that a septic system eo~ld drsi~ ~o~1~ De ~stslled. Sincerely, v '~pproved By: Darcy~evens Engineering Geologist $200 UJest 33rd A.enue, Suite I~ · Anchoroqe,/~losk, 99503-(907) 561-5040 STATE OF ALASKA DEPARTMENT OF ENVIRONMENTAL CONSERVATION P~IBL~C WATER SYSTEMS APPROVAL TO CONSTRUCT Plans for the construction or modification of ' · f [] approved. public water system located , Alaska, submitted in accordance with 18 AAC 80.100 have been reviewed and are [] conditionally approved (see attached conditions). BY ¥1TLE DATE If construction has not started within two years of the approval date, this certificate is void and new plans and specifications must be submitted for review and approval before construction. APPROVED CNANGE ORDERS Change (contract order no. or descriptive reference) Approved by Date APPROVAL TO OPERATE The "APPROVAL TO OPERATE" section must be completed and signed by the Department before any water is made available to the public. The construction of the public water system was completed on (date). 'The system is hereby granted interim approval to operate for 90 days following the completion date. ....... bATE 8Y TITLE As-built plans submitted during the interim approva~ period, or an inspection by the Department, has conf'ro ed the system was constructed according to the approved plans. The system is hereby 9ranted final app¢oval to operate. BY fiTLE ..... DA'~E -" DISTRIBUTION: 1. WHITE - ENGINEER (Complete Section C) 2. YELLOW - WATER SYSTEM FILE (Complete Section C) 3. PiNK - ENGINEER/MUNPBOROUGH (Complete Secdon C) 18-0407 (Rev. 11/83) 4. GOLDENROD - MUNI-BOROUGH (Complete Section A)