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HomeMy WebLinkAboutLENNIE HEIGHTS LT 4 GREA,ER ANCHORAGE AREA BOR,.JGH Department of Environmental Quality 3330 C Street Anchorage, Alaska 99503 INSPECTION REPORT ON-SITE SEWAGE DISPOSAL SYSTEM SEPTIC TANK: DISTANCE ~1~~ FROM WELL INSIDE LENGTH MANUFACTURE q3~-~ INSIDE WIDTH MATERIAL LIQUID DEPTH NUMBER OF COMPARTMENTS LIQUID CAPACITY___ GALLONS. TILE DRAIN FIELD: DISTANCE FROM WELL NUMBER OF LINES ABSORPTION AREA FOUNDATION DISTANCE BETWEEN LINES SQ. FT. LENGTH OF EACH LINE I}EPTH OF FILTER DEPTH: TOP OF TILE TO FINISH GRADE NEAREST LOT LINE TOTAL LENGTH OF LINES TRENCH WID'FHI'/~:' IN. TOTAL EFFECTIVE MATERIAL BENEATH TILE (I~ IN. ABOVE TILE ~/" IN. WELL: BUILDING FOUNDATION__ CESSPOOL APPROVED _CONSTRUCTION NEAREST LOT LINE OTHER SOURCES DISAPPROVED __ NEAREST SEWER LINE __ DEPTH SEPTIC SEEPAGE , TANK SYSTEM .... REMARKS DISTANCE FROM: DISTANCES: INSTALLED BY: '~.[. L.-'¢.-~0 SEWER LINE DEPTH: PIPE MATERIAL' LOT SLOPE: REMARKS: DIAGRAM OF SYSTEM G.A.A.B. 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F)Si!::!; 1::~1;1:I::] !;ifi::3:!i I!!:;i:!::]l':, i:::I!,11]:' i"ii !':;T F:!',!:] F;l!:JTti{::i:i',!ii!]:, '!C:l !t!!:::] i)l]!:::'l:::!F::!l'il?',Ft' !.'.! :i] 't H T[ I",] ]:!~:l:i!i !]~F:' i!'I!:: !,.i!.::! ! f]:f]li'lF::'i .E?T]i' 17iTi'ii':]!;i; !:;71:: (31.1 i: I:;i:!i]!'!l: !'-,i i';'.; H!':I"/ i: Ii:::'!:::'! ,~'r' ':::;i::'i::ii": i !:' i: I]7:1"! i' ]!i i]:ti",!li:!; I::li",ii]]:, tJ]:l])l",!'i]!; !'I;i:! tl]:'1 ]t f]t?',l iii:* ]!] l:li]!il';i:i:':!i"ii!!; (::?F:~ i]! !:::!!:!Ii i:] 3i::i (i',!:::;J Ii:;9,!] !:::'F;ii]iii '!ili:;i i i:./":.:; !'?'il ! f:t'!'): July 12, 1977 R&M NO. 751182 Lennie Construction, Inc. SRA Box 902 Anchorage, Alaska 99502 Attention: Leonard Hogue Subject: Soil Investigation for Sanitary Sewer System, Lot 4, Lennie Heights Subdivision, Peter's Creek, Alaska Dear ~. Hogue: At your request of June 28, 1977, we conducted a subsurface soils investigation at the proposed location of the sanitary sewer system on the subject lot. The investigation complied with those procedures required by the Municipality of Anchorage, Department of Health and Environmental Protection. This investigation which was accomplished on July 11, 1977, was conducted within a backhoe trench which had previously been excavated to a depth of 16.5 feet below the existing ground surface. The test location is shown in attached Drawing A-01. All material exposed in the trench was monitored by an experienced engineering geologist. The soils encountered in the excavation are shown in the test hole log in Drawing A-01. The symbols used in Drawing A-01 are explained in Drawings B-01, & B-02. This log displays specific conditions encountered at the test location. However, subsurface conditions may vary in other parts of the lot without any apparent surficial evidence of the change. Groundwater was not encountered. Bedrock was not encountered. At the time the hole was excavated seasonal frost was not present, and permafrost was not encountered. A test hole was excavated to a depth of 1' within the trench. The top of the test hole was approximately 5' below the original ground surface. A percolation test was performed within the test hole at the depth shown in the attached Table 1. All depths were measured from the top of the hole. The data in Table 1 show average infiltration from the depths indicated to the bottom of the hole. The measured percolation rate was 25 minutes per inch. July 12, 1977 Mr. Leonard Hogue: Page -2- We appreciate this opportunity to be of service to you. Please contact us if you have any questions concerning this letter or if we can be of additional service. Very truly yours, R & M CONSULTANTS, INC. Stephanie Hoag Staff Geologist SH/JMB/gld Attachments: Head, Earth Science Dept Drawings A-01, B-01, B-02, Table 1 Lot 4, Lennie Heights Subdivision Backhoe / Trench Not to Scale All distances are approximate and have not been measured by survey methods. SILTY GRAVELLY SAND w/ MA/qY COBBLES Brown, Slightly Moist 0I (sM) SILTY GRAV]ELIjY SAND w/ M~Y COBBLES, TRACE CLAY (SM) Brown, Moist 9I 16.5'T.D. Thi~ log represents subsurface soil conditions within the backhoe trench at the location shown. See Drawings B-01 and B-02 for explanation of symbols. TRENCH LOG AND LOCATION DIAGRAM LENNIE CONSTRUCTION, INC. IIF'B' GRID: PROd. NO 751182 OWG. NO. A-01 TIME 4:07 4:08 4:09 4:10 4:11 4:12 4:13 4:14 4:15 4:16 4:17 4:22 4:27 4:32 4:37 4:47 4:57 5:07 TABLE 1 PERCOLATION TEST LENNIE CONSTRUCTION, INC. R & M NO. 751182 ELAPSED TIME 0 1 2 3 4 5 6 7 8 9 10 15 20 25 30 4O 50 60 FEET .175 .2 .2 .2 225 225 225 225 225 25 25 25 275 3 3 325 35 375 FEET 0 .025 0 0 .025 0 0 0 0 .025 0 0 .025 .025 0 .025 .025 .025 TOTAL DROP 0.2 FEET OR 2.4 INCHES 25 MINUTES/INCH