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Home My WebLink AboutSTUCKAGAIN MANOR BLK 2 LT 12AStuckagain Manor Block 2 Lot 12A #041-023-30 Municipality of Anchorage Development Services Department - j' Building Safety Division • •' •' On -Site Water and Wastewater Program. 4700 S. Bragaw St. P.O. Box 196650 Anchorage. AK 9951M650 Page I or 3 www.ci.anchorage.ak.us (907) 343-7904 ON-SITE WASTEWATER DISPOSAL SYSTEM AND/OR WELL INSPECTION REPORT Permit Number: Sw03 0 3 67 PID Number: OY/ — 0 Z3 - 30 Name l ♦ is r n Jj-q r r a Is n a Wastewater System: [3 New ❑ Upgrade Address' r rnl' s �A91JEO 7 GG2-63 rttoLb% ABSORPTION FIELD Phone T ? 7. s G Number &Yof roans. J .3 b 51 Deep Trench E3 Shallow Trench O Bed O Mound D Other. Soil Rating Total Depth from original Grade. LEGAL DESCRIPTION . 2 P tF -7. l F, Block. Lot Subdivision: Depth to pipe baton from orI inal grade: Gravel depth beneath pipe: 1 2 t2i4 STHC� 4(117 /'1G ACJ/- 2• G FI. Y•S Ft Township Range: VSection: Fill added above ongind grade. Gravel Length: 6 3 .0 Ft. Ft. Well: ® New ❑ Upgrade Gravel w.dth: 2.,< Number or lines: / Distance between lines. .• Ft. Ft. Classification (Private. A. B. C): Total Deptthh'. 'L Cased to: TOW absorption area ` •� Pipe Material Fe C /v P�� Q (�F'•1 C ,.+ e J Ft. I I S Ft. SV ` Fill 3 r' Driller He Date Drilled: 9//9/03 Static Watel Level: 0 Ft 4utaller. t Data Installed. 1 9 /1Z/0 r e.d Pump Sat at Height Above GrourN TANK 3 GPM Ft.Casing 2 FL SEPARATION DISTANCES tR Septic ❑ Holding ❑ S.T.E.P. ❑ Other. To From Septic Tank Absorption Field Lift Station Holding Tank Publio/Privat Sewer Line Maradacturer. A•n ch o n�l o Ta n k capacity isloo Gal Well 137' id'3 F — — > Materiel:L_ .SJ�0/ Number of Compartments - Z Surface Water ;> (CAD 11;> Icnr _ _ LIFT STATION N. A Sue: Manufacturer. Lot Line 9e a ' a _ Gal. 'Pump on' level d: 'Pump otr level at: High water alarm at: Founcation 1136 62F — — in. in. in. Pump Make a Model cbia Elel Inspections performed by Coram Crain _ _ RemamsBENCH D FS Ghat 40"lone! J ;MA2 I S'd0 - MARK al Iic n t<� ent{oe0e Location and Description: of e-oncl ash r.�if aF�IL Assumed Elevation: helm- arc: P(Wr ev 100.0 Ft lbcuhon how^ I3 �+ NC C.v rG Engineer's Stamp A, 1 Inspections performed by: Fiorl6/1o4 %l+ c Dates: 1at 9111103 1 4(,..:0 49T}i •'i° .2nd ()/L�/Q� tt *........................ r. Ire Development Services Department Approval :.✓............. 402 THEODORE F. MOORE c'„�•.� Reviewed and approved by: Date: z (5 CE -3569 IRww 1'-'0011 Y -•••.v....•••' �l C' PERMIT NO: SW030367 PID NO: 041-023-30 COR. "Y" COR. "T' PAGE 2 OF a THE .iii. IIIIIIIIIIIIIIIII, VIIIIIIIIIIIIII/� IIIIIIIIIIIIIIIII, •IIIII/IIIIIIIIII� •DO•!IIIIIIIIIIIIIIII. IIIIIIIIIIIIIIIII. CE CE 35 IIIIIIIIIIIIIIIIIIIII� /IIIIIIIIIIIIIIIIIIIIII�. :N JK -D- 3" -OT 12A .63 -FOOT LONG SOIL ABS. TRENCH w. 4.5' EFFECTIVE GRAVEL REBAR FOR OLD PERMIT NO: SW030367 PID NO: 041-023-30 h � �Ttf�ODOrtE F. ASOORE ; � CE -3589 Q T SOIL COVER i INV. 95. S3-F6'OTLONG •SOIL ABS. TRENCH:. € w. 4.5' GRAVEL UNDER DIST. PIPE:.... BOTTOM TRENCH ELEV. 91.2' BOTTOM T.H. #1 ELEV. 80.3' M.T. DRY 8/21 /03 INV. 96.1' PAGE 3OF3 4' SOIL COVER 1500-GALLO :SEPTIC TAN 11►1�A 'NOV 11 03 06s45p (907) 345-0593, %VAIVAtwbl ,LVks Drilling Started: 9/ ( % 103 ,,�ompleted: j / A? /4,1 P. 1 City/Borough: Subdivision/USS: Block Lot I Property Owner Nan c Address 1 vr 1,�� . L Meridian _- ......... ... Township ........ Range _.._.-.- Section ....... t/. or -'/� of r/ of •..,. ,. t� Elevation: BOREHOLE DATA: (from ground surface) Depth Drilling method: � Air rotary, 0 Cable tool, Other. -Material:,Type, Color & wetness From I L Welluse: 0 Public supply)KDomestic, 0 Other %: - \ ` O Depth of hole: orf S ft, Casing stickup: 4 -1 - •-Casing Sfe Casing type: e(// Thickness . D�� inches' Casing diameter. inches Casing depth-* 'ft -A^ a V e L S ( Lincr type: Diameter: inches Depth: =•' . _ C .Static water(from toparfilaing): .1V.,,-fton' •) •'i��' • Pumping level & yield: feet after -- ho= at---_tff gpm - Recovery rate: J . gpm, Method of testing: Development method: Duration -' 1 I S- Well intake opening type: Open end, an hole f 4- 0 Screened; Start: ft, Stopped R type: Slot/mesh size 0 Perforated;Start: U It. Sioppcd 70_ ft Start: ft, Stopped ft , Note:... fScreen l • �,� ir' an�4 tav(L 10 / � II__ E u c-1�- '��s)WS Grout type: Ras t Volume 4i Depth; from ft, to. ft Pump intake depth: __ ft 1^a..c_f e r rCC, 01 �0 Pump size hp, Brand name: nes, p Was well disinfected upo Iction? �i Yes, ONO _l L to �t � Q 0 Method of disinfection: `-" M i I+jz,.— DrillercommenW disclaimers: _ Well Driller Name: r. Company Name: HEFTY D t ING Mailing Address: 3540 AKULA DRIVE City: ANCHORAGE State: ALASKA Zip: • 99516 Phone Number: 1;907-346-0 93 Drillers Signature:! :tato bw regolres that a etKiy of Utis ..<H 4�E he sou w. qk Xtate nLAkuAa within 45 days. Eqj�te n•c occcnU1A-, (AK statutes 3&05.020.38.05.035. •1.08.020.46.15420 and AK regulations I I AAC 93.1401 DEPARTMENT OF NATURAL RESOURCES Mining, Land & Water Hydrologic Survey 550 W Tui Ave., Suite 900A Anchorage, AIC 99501-3517 ,Ttlep1:one (907) 269-8639 and FAX (907) $62-1384 Within the City of Anchorage, it is required that a copy of the well log be sent to the appropriate city office within 00 days and that another copy of 1 the well loo be sent to the well/proprr y owner within 30 days. PcrmitNumber. SO 4A(j.•67_ Date of lssuc:64t_ -.d� / t ParcclIdentification Number; Is well located al approved perntil location? U Yes or 0 No IV 3:c�o MUNICIPALITY OFANCHORAGE �j,�2�� Development Services Department 7 3 0 0 On -Site Water & Wastewater Program 4700 South Bragaw Street P.O. Box 196650, Anchorage, AK 99519-6650 (907) 343-7904 ON-SITE WASTEWATER DISPOSAL SYSTEM I WATER SUPPLY PERMIT Initial Permit Number: SW030367 Legal Description: I Stuckagain Manor Block 2 Lot 12A Design Engineer: 0019 Flattop Technical Services Owner Name: Sandra Mjolsnes Owner Address: 6263 Farpoint Drive Anchorage . AK 99507-1261 Date Issued: Sep 09, 2003 Expiration Date: Sep 08, 2004 Parcel ID: 041-023-30 Site Address: 6257 Farpoint Drive Lot Size: 111330 SO. FT. Total Bedrooms: 4 Permit Bedrooms: 4 This permit is for the construction of: ❑✓ Disposal Field ❑✓ Septic Tank ❑ Holding Tank ❑ Privy All construction must be in accordance with: 1. The attached approved design. ❑✓ Private Well ❑ Water Storage 2. All requirements specified in Anchorage Municipal Code Chapters 15.55 and 15.65 and the State of Alaska Wastewater Disposal Regulations (18AAC72 ) and Drinking Water Regulations (18AAC80 ). 3. The engineer must notify DSD at least 2 hours prior to each inspection. Provide notification by calling (907) 343-7904 ( 24 hours ). ( Not required for a Water Supply Permit only). 4. From October 15 to April 15, a subsurface soil absorption system under construction during freezing weather must be either: A. Open and closed on the same day. B. Covered, sealed, and heated to prevent freezing. Received By: Z�� 140-4� Date: 9 y rai a2 Issued By:�Date: 'J Municipality of Anchorage • Development Services Department tea'• '`'� Building Safety Division s, a On -Site Water and Wastewater Program 4700 South Bragaw St. P.O. Box 196650 Anchorage, AK 99519-6650 www.ci.anchorage.ak.us (907)343-7904 ON-SITE SEWERM/ELL PERMIT APPLICATION FOR A SINGLE FAMILY DWELLING Parcel I.D. ny I — n Q --�)— 3V Permit Number SW SaVN&f6' NES Property owner(s) 1"f Paf_cn +/ Day phone 3 37 —165.* Mailing address (1) 160263 FafRd0'Af' Mailing address (2) A -m Ch yr-5tze M< Zip Code _ 9-9S'0'7-1 Z6i Legal description (Lot, Block & Sub'd.)L.�f �7- *4. 13rrk' Zf S�ccckaou't•+ /`'�a�a- -CIL) Legal description (Section, Township & Range) �n c�5� rc)�_ in 0 (Vki TV , Lot Size Acres/Sq.Ft. THIS APPLICATION IS FOR: Sewer Only ❑ Sewer and Well Sewer Upgrade ❑ THIS PROPERTY CONTAINS: Hot Tub ❑ Swimming Pool ❑ Therapy Pool ❑ Number of Bedrooms H Well Only ❑ Water Storage ❑ Jacuzzi ❑ Water Softening Unit ❑ I certify that the above information is correct. I further certify that this application is being made for a Single Family Dwelling and is in accordance with applicable Municipal Codes. dgo *Yld-o, (Signature of property owner or authorized agent) Permit Fees: `t►GO f/S'r = S'S'O Waiver Fees: Date of Payment: S OdIG3 Date of Payment: Receipt Number: y�� _ Receipt Number: (Rev. 12/00) _�� CIVIL & ENVIRONMENTAL ENGINEERING • ENERGY CONSERVA710N & ANALYSIS THEODORE F. MOORE, P.E. PH: (907) 345.1355 August 25, 2003 M.O.A. DSD P.O. Box 19-6650 Anchorage, AK 99519 Dear Sirs: 14530 ECHO ST. ANCHORAGE, ALASKA 99516 The purpose of this letter is to provide the required design narrative in support of our application for a permit to construct wastewater disposal facilities on Lot 12A, Block 2, Stuckagain Manor, located at 6263 Farpoint Drive. Soils logs, perc test results, a site plan, design drawings and specifications are enclosed for your review. The proposed system will be constructed in the vicinity of test hole # 1. As can be seen from the soil log, the native material between 1.5 and 6.0 feet below ground level is a clean cobbley gravel with a measured perc rate of less than 1 minute per inch. The underlying GM/GP material peres at 11 minutes per inch, eliminating any need for an imported sand filter. Using the soil application rate of 1.2 gpd/sq. ft. specified in the wastewater ordinance, this proposed 4 -bedroom residence requires a total absorption area of (4 x 150)/1.2 = 500 square feet. The proposed 63 -foot long trench design with an effective gravel depth of 4.0 feet has a total absorption area of 504 square feet. The topography of the lot in the area of proposed construction slopes down towards the south at approximately 15%. The proposed project will have no significant impact on present or future water supply and wastewater disposal systems serving adjacent properties, nor will it have any significant impact on reserved space -surface and subsurface, or on drainage. Please give me a call at 345-1355 if you have any questions on this submittal. Sincerely, Ted Moore, P.E. 4 t.. CIVIL & ENVIRONMENTAL ENGINEERING • ENERGY CONSERVA710N & ANALYSIS THEODORE F. MOORE, P.E. PH: (907) 345.1355 August 25, 2003 M.O.A. DSD P.O. Box 19-6650 Anchorage, AK 99519 Dear Sirs: 14530 ECHO ST. ANCHORAGE, ALASKA 99516 The purpose of this letter is to provide the required design narrative in support of our application for a permit to construct wastewater disposal facilities on Lot 12A, Block 2, Stuckagain Manor, located at 6263 Farpoint Drive. Soils logs, perc test results, a site plan, design drawings and specifications are enclosed for your review. The proposed system will be constructed in the vicinity of test hole # 1. As can be seen from the soil log, the native material between 1.5 and 6.0 feet below ground level is a clean cobbley gravel with a measured perc rate of less than 1 minute per inch. The underlying GM/GP material peres at 11 minutes per inch, eliminating any need for an imported sand filter. Using the soil application rate of 1.2 gpd/sq. ft. specified in the wastewater ordinance, this proposed 4 -bedroom residence requires a total absorption area of (4 x 150)/1.2 = 500 square feet. The proposed 63 -foot long trench design with an effective gravel depth of 4.0 feet has a total absorption area of 504 square feet. The topography of the lot in the area of proposed construction slopes down towards the south at approximately 15%. The proposed project will have no significant impact on present or future water supply and wastewater disposal systems serving adjacent properties, nor will it have any significant impact on reserved space -surface and subsurface, or on drainage. Please give me a call at 345-1355 if you have any questions on this submittal. Sincerely, Ted Moore, P.E. SEPTIC AREA LOT 10A , \ 63 -FOOT LONG \ SOIL ABS. TRENCH- \ w. 4.0' EFF. GRAVEL \ REPL. \ TRENCH i I I >I of z LOT 7 BLOCK 2 R 100' ; vPROPOSED ,' WELL TCO \ ' �RWLER ---- ' i 1500 -GALLON T.H. SEPTIC TANK T.H.#1 #2 R 100' --- i WELL IQ 0 OF At tt ir ,THEODORE " NOORE E-3589 a sF LOT 6 BLOCK 2 II N LOT 12A LOT 4 BLOCK 3 _FORMER PROPERTY LINES �- PRE T PROPERTY LINES LOT 3, BLOCK 3 LOT 12A, BLOCK 2, STUCKAGAIN MANOR SID PROPOSED WELL AND SEPTIC SYSTEM SITE PLAN FLATTOP TECHNICAL SERVICES 11INCH=80FEET 14530 ECHO STREET DRAWN BY TFM ANCHORAGE, ALASKA 99516 1 AUGUST, 2003 NOTE: THIS IS NOT A SURVEYED PLAT. ALL LOCATIONS SHOWN ARE APPROXIMATE. CONSTRUCT 63 -FOOT LONG SOIL ABS. TRENCH w. 4.0' GVL. BELOW DIST. PIPES - BETW. 2.0'& 6.0' BELOW GROUND 0 4.514 "A" r -O "All 50 3 4" DIA. D-3034 NON -PERF. PIPE 4" DIA. F-810 PERF. PIPE .T. 63 PLAN VIEW SCALE: 1" =10' CLEANOUT MONITOR TUBE MIN. 2' BACKFILL 1 CROSS-SECTION "A -A" SCALE: 1" = 5' 21GINAL GROUND -TER FABRIC RIGID INSULATION DIA. F-810 PERF. PIPE !" - 21/2" SEWER GRAVEL )TTOM OF EXCAVATION DBL. C.O. INSTALL 1500 -GALLON SEPTIC TANK b`d C.O. A4 'I. ThEODORE F. A40ORE ; !• CE - 3580 LOT 12A, BLK. 2, STUCKAGAIN MANOR S/D SEPTIC SYSTEM INSTALLATION PLAN AND CROSS-SECTION FLATTOP TECIINICAL SERVICES SCALE: AS SHOWN 14530 ECHO STREET DRAWN BY: TFM ANCHORAGE, AIC, 99516 AUGUST, 2003 FLATTOP TECHNICAL SERVICES 14530 ECHO ST. . ANCHORAGE, ALASKA 99516 TEST HOLE # 1 SOILS LOG -- PERCOLATION TEST LEGAL DESCRIPTION: —Lot 12A.. Block 2..Stuckagain Manor DATE PERFORMED: August.14,2003 _ PERFORMED FOR: _--Ed Mjolsnes DEPTH Pt (feet) .. 12:37 1:07___ .-1;09 _ 1 - €€'•. SM Reddish sandy loam 2- i_30_ 205/8 233/8 30 205/8 2_-34 1 3 - —2;09:15 GP Clean cobbley gravel 4- Rounded pebbles 5- 6 -- MUSM Sandy silt 7- -8- 8- 9- 9- GM/GP Somewhat silty gravel 10- L— 11" 12 13 14 15 16 17 18 19 - 20_ I COMMENTS: MUSM Sandy silt GM/GP Silty gravel Similar to above B.H. SLOPE 15% Depth to Groundwater Mn groundwater M.T_dry- Date 8/14/03 8/21/03__ Clock Time Net Time Percometer Net Drop (minutes) Reading j (inches) 8114 _ 12"_P-resoak .-Add water_.A start—. --- 27,_1/ I d rHEODOnE F. MOORE � a' CE - 3509 go~ t„” Y .. ',� . • wy r, SITE PLAN ATCO TRAILER T.H. T.H. #21 #1 160 1 110 Date Reading Clock Time Net Time Percometer Net Drop (minutes) Reading j (inches) 8114 _ 12"_P-resoak .-Add water_.A start—. --- 27,_1/ I 12:37 1:07___ .-1;09 _ _ 233/8—. .- — 30 20 9/16- 2A3/16! 233/8 ----_Add water — _#2 �__Addater #3 i_30_ 205/8 233/8 30 205/8 2_-34 1 _1:39_ 1:39:15 —2;09:15 I L— PERCOLATION RATE] 1__ (minutesfinch) PERC HOLE DIAMETER TEST RUN BETWEEN 9.0 FT AND 9.5 FT PERFORMED BY FLATTOP TECHNICAL SERVICES. I�.� 0_ CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALLSTATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: a/ 2 5- /U� 0 FLATTOP TECHNICAL SERVICES 14530 ECHO ST. ANCHORAGE, ALASKA 99516 TEST HOLE # 2 SOILS LOG -- PERCOLATION TEST LEGAL DESCRIPTION: _Lot J2A_Block.2..Stuckagain Manor -SID_ DATE PERFORMED:--August_14,.2003 — PERFORMED FOR: __---Ed Mjolsnes _ DEPTH SLOPE (feet) Net Time Percometer Net Drop (minutes) Reading (inches) 8/14�t 5.gallon presoak: 51;40_ 12:5240 Pt 1 - _20 SM Reddish sandy loam 2- 3 - I 4 - I � GP Clean gravel I Similar to T.H. #1 5- 6- 7- 8- MUSM Sandy silt 9- Depth to Groundwater Date No groundwater -18/14/03 M,_T-dry1821/03_ h T N if. � •tel ti Yi ,t •, T1f E0^0 F. Af00RE ; i • CE -3589 };r t. f •'�`` SITE PLAN I I i N ATCO TRAILED T.H. T.H. #1 #2 110 I 160 104 145 I LOPE i GM Silty gravel 14- Tight 15- 16-1 5-16- B.H. I 2nd perc test 77_ adjacent to 18 T.H. #1 19 0% Date j Reading Clock Time Net Time Percometer Net Drop (minutes) Reading (inches) 8/14�t 5.gallon presoak: 51;40_ 12:5240 27 i 1 j 7+ i _20 I I � I 20 - PERCOLATION RATE <<1 (minutesfinch) PERC HOLE DIAMETER 10_ TEST RUN BETWEEN -2.5— FT AND_3.0 _ FT COMMENTS: The perc test shown on this sheet_ was, conducted at_T_H._#1_The entire_5 gallons of water used to pre-soak the test hole_ -had been absorbed within..]..minuteThe.undedying tighter -material. eliminates any need for imported filter -sand. PERFORMED BY FLATTOP TECHNICAL SERVICES. 1 CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALLSTATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: F / 2 S / Cl_? i (-F&7ecfinicalSemices 14530 Echo Street, Ancfiomge, .XX 99516 Tfione (90) 345-1355 Lot 12A, Block 2, Stuckagain Manor S/D 6263 Farpoint Drive Wastewater disposal system installation Specifications 1.0 General: 1.1 The scope of the project consists of installation of a 1500 -gallon septic tank that distributes effluent into a 63 -foot long soil absorption trench containing a total of 4.5 feet of sewer gravel. 1.2 Construction shall be as depicted on the approved site plan and design drawings. Minor deviations from these drawings may be allowed or required by the engineer conducting the inspections. All construction procedures and material specifications shall conform to Municipal and State requirements. All separation distances shall be in conformance with Municipal requirements, unless specifically waived. 1.3 The contractor shall be responsible to obtain any necessary utility locates, and to work around any buried utilities. 1.4 The contractor shall provide adequate cover material and rough grading over all system components to ensure that proper drainage is achieved after settlement and that there are no residual depressions. Insofar as possible the contractor shall minimize damage to trees and existing lawn areas. 1.5 Unless specifically agreed otherwise, the homeowner shall be responsible for finish grading after the soil is compacted, as well as placement of topsoil and reseeding all areas disturbed by the construction. 2.0 Septic Tank: 2.1 The new 1500 -gallon, 2 compartment septic tank shall be Municipally approved and shall be set level on undisturbed soil. Each compartment shall be equipped with a watertight manhole cover and a 4" cleanout. If the tank is buried less than 4 feet, it shall be insulated with 2 inches of approved burial type, rigid insulation. 2.2 All pipe connections to the tank shall be equipped with waterproof mechanical couplings. The waste line from the residence to the septic tank shall have a minimum slope of 1/4"' per foot, and the waste line between the tank and the soil absorption system shall have a minimum slope of 1/8" per foot. A cleanout shall be installed 1 - 4 feet from the building foundation, and a double cleanout shall be installed within 5 feet downstream of the septic tank. 3.0 Soil absorption system: 3.1 The soil absorption system shall be constructed by excavating a 63 -foot long trench to a depth of 6.0 feet below ground level. The long axis of the excavation shall parallel an existing contour. Care shall be taken in placement of the trench to ensure that there is adequate slope from the house. 3.2 The bottom of the excavation shall be level. Any compacted or smeared surfaces shall be raked to allow proper infiltration. Sand for leveling or serving as filter material shall comply with Municipal specifications. 3.3 A total of 4.5 feet of approved sewer gravel shall be placed in the bottom of the excavation with the perforated distribution pipes laid level such that the pipe inverts are no less than 4.0 feet above the bottom of the sewer gravel. Sewer gravel shall be 0.5" - 2.5" screened gravel. 3.4 Monitor tubes and cleanout pipes shall be of 4" diameter and installed in the locations shown on the design drawings. The portion of the monitor tube extending through the sewer gravel shall be perforated. 3.5 Approved filter fabric shall be placed over the entire top surface of the sewer gravel. A minimum of 2 feet of soil cover is to be placed over the filter fabric. If the soil cover thickness is less than 3 feet, two inches of rigid, burial type insulation is to be placed over the entire top surface of the gravel, in addition to the filter fabric. 3.6 The top surface of the cover material shall be raised a minimum of 12 inches higher than the surrounding terrain to allow for subsequent settlement, and shall be graded to smooth contours. Fill slopes shall be no steeper than 3:1. 3.7 Unless specifically agreed otherwise the homeowner shall be responsible for arranging to have the site finish graded after the backfill material has stabilized, and for placement of adequate topsoil and seed to promote rapid revegetation of all areas disturbed by the construction. 4.0 Inspections: 4.1 A total of 4 engineering inspections will be required during the course of the project: (1) initial stakeout with the contractor to establish the location of the system and to discuss the plans, specifications and construction procedures, (2) after the native material has been excavated to expose the infiltrative surface to ensure that it is level and at the right elevation, and conforms with the soil test information, (3) after the sewer gravel is in place and the distribution pipes have been laid and connected up to the septic tank, but prior to placement of insulation or filter fabric, and (4) after rough backfill and grading is complete. The septic tank requires one inspection after it is set level and the piping connected, but prior to backfill. This inspection may be incorporated with any of the above inspections. 4.2 The installer shall coordinate the timing of the inspections with the engineer sufficiently far in advance to ensure the availability of the engineer.