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Home My WebLink AboutHIDDEN HILLS BLK 1 LT 38Hidd n Hill Block Lot 38 #011-121-63 Municipality of Anchorage · Development Services Department Building Safety Division On-Site W~t~r & W~stew~ter Program, 4700 South Bmg~w SL p.o. Box 196650 Anchorage. AK 99519-6650 www.d.anchorage.ak.us (907) 343-7904 Page 1 of On-Site Wastewater Disposal System and/or Well Inspection Report Permit Numbe~ SW010040 PID Numbe~ Ol1-121-63 Name:JOE WOOD Waetewater System: · New I-I Upgrade ~.O. BOX 90578 * ANCHORACE, AK 99509 ABSORPTION FIELD Pn°ne:(907) 243--5517 3 IDeep Trench OShallow Trench abed I'lMound LEGAL DESCRIPTION 1.2 ~/~ ~ 13.o UAX 38 1 HIDDEN HILLS 4' MAX . 9 - - - SEE DWG. ~ 21 WELL: D New I-I Upgrade 2.5 ~ 1 ~. ~ r~ 378 ~. r~ D 3034/ F-810 ~ DENALI SEWER 3/26-28/01 ~ ~ ,~ TANK SEPARATION DISTANCES . S. pt~ I~ ,old;ng n S.T. EP. a Other To S, pUC ~,o Uon U~t Hok~n; ~/~'~ ANCHORAGE TANK 1000 We~ 100'+ 100'+ - - 25'+ STEEL 2 s,,oco wot., ~oo'. ~oo'+ - - - LIFT STATION Curtain Droln NC ~E KNOW · ~ Ic'"'~'''; ~. ;.,.,.,,; Remarks: BENCH MARK OLD SEPTIC TANK WAS ABANDONED PER UPC. BOTrOM OF SEPTIC TANK REDUCED SEPERATION DISTANCE TO NEIGHBOR'S SEPTIC PIPE (FROM LOT 39) TO 6' PER, VERBAL 94.53 APPROVAl FROM JFFF POFT. FIFI D INSPECTIONS BY SUSAN OSWAI T. Inspections performed by: AWWC, INC. Dates: ~st 3//25//2001 *'.~.." .................. 2nd 3/28/2001 ~...L~.***~N~.~...' ............ 3rd 3/28//2001 ?~ '...~eff~e~' F' Garness.: Yh'Pe '1 ' ' ' -' Department of Health and Human Services approval ~ ....~_c~795~ ..... PC.~,..u~.c.: AS BUILT DRAWING SW010040 -- 01 $ -121-63 ~ ~ ~ / FOR OLD O~Nr~ELD 10 BE FOR NEI~BORING // ~ .... ~ / / // ~ s~P~,C~u~ '. ~ ~o o~.~ ~/ ~ %,~ .~rco ~ / ¢I~"~'~ ~'I w,~,,~ ~x' x .... " / .~ / ~ / / X ST1 36.0 67.5 / ~ ~ ST2 33.0 73.5 ~~ . I DBL1 28,5 75.0 / ~l DBL2 26.5 75.5 FCO 43.5 60,0 ~ /~ MT1 34.5 62.8 I ~ 0 co~ ~2.0 5~.~ CONSULTANTS. INC. 1 ' i~ ................... :... JOE WOOD (907) 243-5517 2 OF HIDDEN HILLS SUBDIVmSIO.: LOT 38; BLOCK 1 ~PE OF WORK: ~ rO~ess,o~ AS-BUILT DRAWING OF SEPTIC SYSTEM UPGRADE '~ $W010040 011-121 -$3 C.J.O. , CONSULTANTS, INC. N.T.S. ' ........ PROFILE AS-BUILT DRAWING OF SEPTIO SYSTEU UPGRADE MUNICIPALITY OF ANCHORAGE Development Services Department 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 PERMIT Upgrade Date Issued: Mar 22, 2001 Expiration Date: Mar 22, 2002 Permit Number: SW010040 Parcel ID: 011-121-63 Legal Description:J~DEN NILL~'~UI~)-~I~O~I- BLOCK ¥'[-OT Design Engineer: 0041 AK Water & Wastewater Consultant Site Address: 6321 WEST 80th AVENUE Owner Name: TAMMY PAll'ON Lot Size: 10141 SQ. FT. Owner Address: 6321 WEST 80th AVENUE Total Bedrooms: 3 Permit Bedrooms: 3 ANCHORAGE, AK 99502- This permit is for the construction of: [] OisposalField [] SepticTank [] Holding Tank [] Privy [] Private Well [] Water Storage All construction must be in accordance with: 1. The attached approved design. 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 c~nstruction during freezing weather must be either: A. Open and closed on the same day. B. Covered, sealed, and heated to prevent freezing. Received By: Issued By: Municipality of Anchorage Development Sentices Department Building Safety Division On-Site Water & Wastewater Program 4700 South Bmgaw St. P.O. Box 196650 Anchorage, AK 99519-8650 www.d.anchorage.ak.us (907) 343-79O4 ON-SITE SEWER/WELL PERMIT APPLICATION FOR A SINGLE FAMILY DWELLING Parcel I.D. 011-121-63 Permit Number Property owner(s) TAuMY PATRON Mailing address (1) ;~701 EUREKA SPACF 270 · ANCHORA(;E. AK Mailing address (2) N/A ~/E~r 80 ~ A/ME Day phone 569-9399 Zip Code 9950~2 Legal description (Lot, Block & Sub'd.) Legal desmJpflon (Section, Township & Range) Lot Slze~A~ '~I-IIS APPECATION 18 FOR: Sower Only ~ Sower and Well Sewer Upgrade [] LOT 38. BLOCK 1: HIDDEN HILLS SUBDMSION Number of Bedrooms Well Only Water Storage THIS PROPERTY CONTAINS: Hot Tub Swlmmlng Pool Therapy Pool 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. ALASKA WATER &: WASTEWATER CONSULTANTS, INC. Perm. Fees: ,~ Receipt Number, Waiver Fees; Date of Payment: Receipt Number. ALASKA WATER E.- wASTEwATER CONSULTANTS, INC. March 16,2001 Municipality of Anchorage Development Service Department Building Safety Division On-Site Water & Wastewater Program P.O. Box 196650 Anchorage, Alaska 99519-6650 Ref: Proposed Septic System for Lot 38, Block 1; Hidden Hills Subdivision To whom it may concern: We request a septic permit be issued for the referenced property. The property owners would like to move a mobile home on to the property. The property appears to have had a mobile home previously on it. The property has a private well and possibly an old septic system. The well has been tested by Arrow Pump & Well Service; attached is the well flow report. A test hole was excavated in the northwest comer of the property. The proposed septic system will be designed around the 30 foot radius of this test hole. We are proposing that a new 1000 gallon septic tank and a deep trench type drainfield be installed. Any portion of the possible existing septic system will be abandoned completely. Comments regarding the proposed design are summarized as follows: 1. SOILS: See the attached log which shows the soil classifications, groundwater monitoring, and the percolation test results. It is our opinion that the insitu sandy soils should act as a sand filter and that an application rate of 1.2 gallons/day/112 should apply. 2. TRENCII DESIGN: a. Percolation Rate: <1 minutes/inch b. Allowable Application Rate: 1.2 gallons/day/ft2 c. Number of Bedrooms: 3 d. Design Flow: 450 gallons per day e. Minimum Absorption Area: 375 tt2 f. Total Depth: 13 feet (max.) g. Effective Depth: 9 feet h. Width: 2.5 feet i. Reduction Factor: N/A j. Minimum Length: 21 feet long k. Effective absorption area = 378 112 6901 Debarr Road, Suite 2B * Anchorage, AK 99504 Ph: (907) 337-6179 * Fax: (907) 338-3246 * Website: akwwc.com 3. SURFACE WATERS: There are no surface waters within 100 feet of the proposed upgrade. 4. TOPOGRAPHY: The area were the proposed trench is to be installed is generally flat; in short, there are no slope concerns. 5. SEPARATION DISTANCE BETWEEN TRENCHES: We request that the separation distance between trenches be waived down to 10 feet between side walls. Given the small lot sizes and the small amount of usable septic area; it is our opinion that this is the only option in order to fit a primary and reserve site on this property. We do not anticipate any adverse impacts with this waiver due to the porosity of the soils. I am unaware of any adverse impacts this installation would have on adjacent wells or septic systems. If you have any questions, please contact us at 337-6179. Thank you for your assistance. Sincerely, .E., M.S. NOTE: ,dttached is a site plan drawing, a design drawing, a topography site plan, a soils log, and a 7 page construction specification letter which are all part of the design package for this septic system. 6901 Debarr Road, Suite 2B * Anchorage, AK 99504 Ph: (907) 337-6179 * Fax: (907) 338-3246 * Website: akwwc.com _1 .~o~ ...,. ~/o /".'"q.. ~..e o, _/ ...... I I \ % ,~...~" "3 ............. ~ ~:~'- ~ I ~.~ ~ ........ , , ...... ~, ........ 5--~ ..... ./ / NOTE: SEE DESIGN D~WINGj FOR CONSTRUCTION D~AI~. (P~CE ~ OF ~). gg~ ~OE WOOD (~07) HIDDEN HILB JU~DIVISIO~i LOT ~ o~ SITE P~N FOR PROPOSED SEPTIC SYSTEM \ ~ ~pEoPO~ED DENNFLr'LD. [XCAVATE ~ ~- ~ ~ ~ ~I~UM I~ ~UB~ ~ ~ ~ ~ ~ ~ 21 ~ ~NG. ~ 9 ~ ~ . ~~ ~ / NOTE: ~E CON~CTOR S ~MS ~GGED ~ A REGI~RED ~D SU~OR PRIOR TO CON~RU~ON: 1. ~E NO~ ~D W~ PROP~ UNES 2. ~E 100 FOOT WE~ ~IUS FOR ~E RE~RENCED PROPE~ES TO ~E W~ AND TO ~ NO~. _ wood HIDDEN HI~ SUBDIVISION; LOT 58; BLOCK 1 C[-7955,.... DESIGN OF PROPOSED SEPTIC SYSTEM '~SI~;WATER & WASTEXVATER ,..~....... : ................. .... CONSULTANTS, INC. ' ? 4 ~11 J,~ ****"~ JSOIL LOG - PERCO~TION TESIJ .... :.,~ ..... :... ~O~ D~CRI~ON: HIDDEN HI~ SUBDMSION; L~ 38, B~CK I , ~J · 'rec~ A. PERFORMED FOR: dOE W~D DA~: ~/8/2~1 ',.. .. --- ORG~ICS ITEST HOLE ~ll 2 , =,oo 6 '" ~ / · " 7 ,'¢; DEPTH TO DATE ,,~ ~]; ~'~ GRO~DWATER ~ ~ ~ ~ ~' .'. D~ 3/8/2001 ,,,, CLOCK NET TIME WATER LEVEL NET DROP 11 ..¢~ DATE RE~IN6 TIME (MIN~ES) RE. lNG (INCHES) 1 ,.¢; 2 - 4.5 O' 6' = ,,' Ettf==~; 4 - 5.0 O' 6' 1 "*' 5 -- -- 6' e'¢' 5.0 O' 6' 1,,, PERC~TION ~TE. (1 .(MIN./INCH) PERC. H~ DIA. 6' (INCHES) 2'0~ TEST R~ BET~EN 7.0 FT. ~D 8.0 COMMENTS: PERC-HO~ W~ PRE-SO~ED FOR 4+ HOURS PERFORMED ~ A~ WATER · W~A~R I. ~EF~ ~ ~N~S, CER~ T~T THIS ~FORMED IN ACCORD~CE W~ ~ ~A~ ~D MUNI~IP~ GUIDEUNES IN E~CT ON ~IS DA~: ~ I WATERWELL -TEST PUMP REPORT ~'ntr: r Addr~: Well lnfomnfion: To~l~pth: J~ ~ DepthofCaslng: /t/~ ~ ~r~nFrom ~ To, Casing ~: ~" Se~Dinm: ~ ' ~r~n Slot: Pump ~ormaflon Intake Depth: ~. pump Sln~ ~ ~g Air LineDepth: StaflcWater~vel: ~' Av. Digba~e: ~ Pump On Time: Date: , Pump Off: , .Time: TimeWaterFlow Remarks LevelGPM 0.o~' I~' ~:~ /~,~/90' d I~,~' / ~' g .... ~,~ /3~'._ $ ...... ~// ~~~ ....... ............................................. ~~~ ................... ___ i }- 01-10-01 08:~8 FROI,~CTE EHVI~ONI~HTAL 5615301 T-O0$ P.03/03 F-924 CT&E Environmental Services Inc. Laboratory Division 200 W. Potter Drwa )ranking Water Analysis Report for Total Coliform Bacteria Anchoeago. Alt,, Tel. (9071 562-2343 R£.4D INSFR£'CTION$ ON ~}'E~E SIDE BEFO~ COLLE~ING ~RMPLE Fa~' l~7) 561.5301 ~ TO BE COMPLETED BY LABO~TOKY MI.'ST BE COMPLETED BY WATER SUPPLIER ~nalys~s shows this Water SAMPLE lo = pt:BLIRWATERSYSTEMI.D" El t' I I I'1 ~ PRIVATE WATERSYS'~EM fl Unsut~sfaclo~ fl Sample over 30 houri old, results I be untenable Sample Ioo long in I~nsi~; sample should ~ not be over~ours old at exanlmalmn m indicate~eliable ~sults. Please Sa~d new sample via spec~al~ehv=o m s · Date Received / - J '" ....... 'a ~IMO-MLG '~ .... Result' Anal)st L Month Dat' Year · SAMPLE TYPE: Ankh Fbks Jun ~ Routine Q Trealed D Repeat Sample {for rouflue sample D Untreated Water ~lfl~ lab ref, no, ) Date, ~ hme E Special Purpose Time Coll./ed Client notified ofunsatisfactoo' results: SAMPLE LOCATION Collected By Phoned Spuke with BACT~IUOLOCICAL WATER ANALYSIS MMO-MgG Bflult: Total ~ollform ~. (~ti. Memb~ne Filter: Direct Count ~ Cotonie~10O mi Verlfl~atlan: LTB. 8~B. COLIFIRM - ~ecal Coliform Confirmation Final Membrane Filter Res.hs ~ ,,. Catifor~100 mt ...... ~ .E~.S Member of the SGS Group[SoCl~t8 G~nl~fnlo do Ol-lO-01 08:3? FI~OI,I-CTE ENVIRONMENTAL ,4~T~_- CT&E Envlronmen~a! Services Inc. 5615301 T-COG P.02/03 F-924 CI.e'£ Itel J/ 1010162001 Client poar Client P;ame Aarow Pump & Well So.ice Printed Date/Time 01/08~001 14'~5 Projecl Name~ N/A Collected Dat~ime OI/~O01 11:30 CIm~t Sample Matrix DriVing Water Technical Director Stephen C. Ede Ordered By PWSID 0 S~,mplc Remarks: Allowable Pj.ep Analysis Patam~le~ Results PQL Urals Method L~miu Date Date Init Waters Dep&z'cmenl: N~trate-N 0.500 U 0.$00 mr,'L EPA 300.0 ] 0 max 01/04/0l GCP ~ccob~oloc~' Labor&co:7 Total Coli~nn 0 col/100mL SMI8 9222B 01/04/01 SKW AWIVC, Inc.. Year2001 ALASIot WATER & wAsTEwATER CONSULTANTS, INC. ~ Standard Construction Specifications for Single Family }Veils & Onsite Wastewater Disposal Systems I. REFERENCE PROPERTY: Lot 38, Block I, Ilidden Hills Subdivision. The design is for a three (3) bedroom residence !I. DEHNITIONS: 1. property owner or homeowner: The legal property owner or his/her appointed representative (not AWWC, Inc.). 2. Engineer: Alaska Water & Wastewater Consultants, loc. (AWWC, Inc.) :3. Contractor: The company hired by the property owner to install the septic system. If the property owner installs the system then he/she would also be the contractor for puq~oses of this installation. 4. Well Driller: The person or company hired by the property owner to drill the well. $. DSD &/or MOA: Municipality of Anchorage, Development Services Deparlment, On-Site Water & Wastewater Program. III. RESPONSIBILITIES: · Property Owner Responsibilities: 1. CONTRACIIlAL RELATIONSHIP: The property owner shall con,act with the contractor to perform the work outlined in these specifications and plans, in accordance with the attached DSD permit. There is no conlractual relationship between the contractor and the engineer. The engineer shall inspect the work, as required by DSD, so as to document the installation. Final acceptance of the contractor's work rests with the owner and the DSD. 2. SINGLE FAMILY RESIDENCE ONLY: This well and/or septic system design is for a single family residence only. The homeowner is responsible for notifying the engineer if the residence is used as a duplex, business, or multi-family dwelling. In such cases, the installation permit must be obtained from the State of Alaska, Department of Environmental Conservation. :t. DISCLAIMER REGARDING AS-BUILT SURVEY: The validity of the design site plan is limited by the accuracy of the as-built survey provided to the engineer by the property owner or his/her representative. The property owner shall notify the engineer regarding any known inaccuracies associated with the as-built survey. The engineer assumes no responsibility for the accuracy of the survey. 4. I.J'NPLATTED EASEMENTS: The property owner is responsible for notifying the engineer and the contractor of any unplatted easements, not shown on the as-built survey, which the new well or septic system may encroach into. Such easements are typically identified in the property title report. ~. DISCLOSURE OF SITE CONDITIONS: The property owner shall notify the engineer and the contractor of any seasonal groundwater or surface water runoff conditions known to him/her which could potentially effect the operation of the septic system. The proposed septic system must be at least 100 feet Pagel of 7 ,4 WtVC, Inc., Year 2001 from any sh'eams, ponds, creeks, swamps, bogs, or any other surface water as defined by the DSD. This disclosure is of particular significance when the site evaluation and design work is being done during the winter months when surface waters are frozen and there is snow cover. The property owner shall notify the engineer and the contractor of any known subsurface conditions that would prohibit or restrict the installation ofthe septic system. Items of concern would include, but are not ~ buried piles of construction debris, undocumented septic systems, areas which consist primarily of fill (imported) soil, subsurface drainage systems, & abandoned wells. 6. DRINKING WATER WELLS: The property owner is responsible for notifying the engineer if, to his/her knowledge, any of the adjacent properties are used as a duplex, business, or multifamily dwelling. The new septic tank and leachfield must be at least 100 feet from any private well, 150 feet from any class "C' well, and 200 feet from any class "A" or "B" well, unless appropriate waivers are obtained. Furthermore, the property owner shall notify the engineer of any undocumented or abandoned wells, known to him or her, that are located on the subject or adjacent properties. 7. CURTAIN DRAINS: The new drainfield must be at least 20 feet down gradient and $0 feet upgradient from any subsurface drains. This includes foundation drains. The property owner should notify the engineer of any such drains that are not shown on the design drawings for this installation. 8. POST CONSTRUCTION SITE RESTORATION: Unless specifically agreed upon otherwise, the property owner is responsible for final grading of the areas which settle after consUuction. Prior to awarding the contract, the homeowner should communicate to the contractor any expectations regarding, but not limited to post construction site clean-up, re-landscaping, and restoration of any asphalt, fences, trees, decks, ect. that are effected by the conslruction. All mound type drainfields are required by the MOA to be re-vegetated. The property owner is responsible for this work unless other arrangements are made with the contractor. If the property is being sold, the property owner shall ensure that the aforementioned items are addressed~ with the buyer, and, if the work is to be completed after the sale of the property, mat necessary funds areI lescrowed to fund the completion of the work. 1 9. PROPERTY OWNER INSTALLATION OF SEPTIC SYSTEM: If the property owner intends to install the septic system he/she must first have obtained approval from the Municipality of Anchorage, DSD (343-7904). Homeowner installations typically require more time for engineer inspections. The homeowner should discuss the additional costs associated with such inspections with the engineer prior to star~ing the project. 10. ENGINEER CHARGES TO INSPECT Tile INSTALLATION: The property owner is responsible for payment of all the engineer inspection charges. These charges are in addition to the soils testing and design work that was required to obtain the MOA sewer/well permit. The number of inspections will vary depending on the actual field conditions encountered and the consmiction methods used. If there are any questions by the property owner, or his/her representative, regarding charges for installation inspections they should be discussed prior to beginning construction. AWWC, Inc. will provide you with a written copy of the fee schedule. 11. CItANGES IN THE SCOPE OF WORK: See Section V, "Disclaimers" regarding design changes. See "Contractor Responsibilities", paragraphs I, 2, & 13. In addition, see "Engineer Responsibilities", paragraphs 2, 4, & 5. · Contractor Responsibilities: 1. PRE-CONSTRUCTION LAYOUT: The contractor is responsible for locating all buried utilities, easements, properW lines, surface water setbacks, well radii, and water service lines which may be encroached upon by the proposed septic system. The conlractur shall ensure that all setbacks are flagged by a registered land surveyor, or other appropriate means, prior to conslruction. AWWC, Inc. field engineers/inspectors will not be responsible for establishing or conf'u'ming any of the aforementioned setbacks. Page 2 of 7 AI~VCo Inc., Year2001 7he contractor should recognize that thc location of all wells, surface waters, structures, and other itcn~ hown on the design drawings are typically derived from as-built surveys, and municipal records. Tin ~s-built surveys and municipal records (prepared by professional engineers & land surveyors) have beer assumed to be accurate for purposes of this design; however, the accuracy has not necessarily been field verified. Prior to beginning any construction the contractor shall field locate all items which have protective setbacks and verify that there are no encroachment concerns. Any encroachments, for which waivers have not been granted, should immediately be brought to the altentinn of the property owner (or their representative) and the engineer. The test hole pipes shall not be removed/ahandoned until after the engineer has established their location relative the new drainfield during the fa'st inspection of the di'ainfield installation or during the pre-consU'uctinn layout. The new drainfield/s must be within a 30 foot radius of the test hole/s used for establishing the design criteria. The contractor should establish the elevation of all existing and proposed system components prior starting constxuction so as to insure that the necessary grades can be maintained. This is particuhrly Isignificant when the elevation of the existing system components is unknown because clean-outs are not~ Ipresent, buried, or non-functional (can't measure down them because of obstructions). It is recognized that ]conditions can be discovered that will materially change the design and the constxuction costs. 2. DISCREPANCIES BE'rWEEN DESIGN DRAWINGS AND SPECIFICATIONS: ConsU'uction shall be in accordance with the approved site plan and design drawings, and any special provisions noted on the municipal sewer permit. The contractor is responsible for notifying the engineer of any discrepancies noted on the design plans or drawings, prior to starting work. 3. CHECK GROUNDWATER LEVELS IN TEST tlOLE MONITORING TUBES: Prior to beginning construction, the contractor shall check the liquid level in the test hole monitoring tubes to ensure that there has been no change in the groundwater levels that would impact the proposed design. Any rise in the liquid level should be brought to the attention of the engineer so that design changes can be made if necessary. 4. MAXIMUM DEPTH OF DRAINFIELDS: The maximum depth ofthe drainfield is shown on the design drawings or is noted in the narrative poninn of the design package. The contractor shall notify the engineer of any inconsistencies noted in the design package. For purposes of this installation, the maximum depth of the drainfield will be based upon ~nking a measurement at the deepest part of the excavation beWveen the highest ground elevation encountered usually on the uphill side of the excavation) and the bottom of the trench or bed excavation. The :ontractor shall exercise caution not to remove evidence of the original grade prior to establishment of the otal system depth. In short, don't remove the organic layer until after the original grade elevations are established by the inspecting engineer. 5. SUITABILITY OF MATERIALS USED FOR CONSTRUCTION. The contractor shall ensure that all materials being used are in compliance with the most current guidelines established by the Municipality of Anchorage. This includes, but is not limited to, the following: a. Drainrock b. Sand filter material for conventional beds, trenches, or mound systems. e. Sand filter material and pea gravel for Intermittent Sand Filters (ISF). d. Anchorage Sand and Gravel (AS&G) "block pea" material for Upflow Filters. It is recommended that the contractor provide the engineer with current sieve analysis' from the sand/gravel supplier to document the suitability of the material. The engineer assumes no responsibility for ensuring that the materials delivered meet the MOA requirements. 6. BURIAL RATING OF TANKS: The contractor shall ensure that the septic tank, lift station, or holding tank purchased has a burial depth rating suitable for the actual installation. Page3 of 7 A WWC, Inc., Year 2001 ?, SEPTIC TANK AND STEP TANK SIZES: Prior to purchasing a septic lank or lift station the conU'actor shall verify that it is adequately sized for the number of bedroom~ shown on the permit issued by MOA. The minimum septic tank size is 1000 gallons and the minimum STEP tank size is 1250 gallons. These size tanks will handle residences with up to 3 bedrooms. For each additional bedroom over three (3) the septic tank or the STEP tank volume shall be increased by a minimum of 250 gallons. For example, a four (4) bedroom residence must have a 1250 gallon septic tank or a 1500 gallon STEP tank. 8. INSPECTIONS - ENGINEER NOTIFICATION: The contractor shag notify the engineer at least 24 hours prior to starting consh~uction. If deemed necessary, a pre-cons~'ucfion site visit shall take place. The conh'actor shall coordinate with the engineer any inspections which will be required during weekench, holidays, or before/after normal working hours (8:00 am to 5:00 PM). The property owner may Iocur additional charges for Inspections which do not occur during normal business hours. It is the eontraetor's responsibility to notify the engineer a least 2 hours prior to any inspeetlon. 9. REGULATORY NON-COMPLIANCE. The contractor shall report to thc engineer and the propergt owner any observed condition which would put the septic system in violation of State or Municipal regulations. 10. BACKFILL OLD TEST IlOLES: Any remaining test hole excavations shall be filled and mounded as part of this project. Unless insU'ucted otherwise by the engineer, the old test hole groundwater monitoring pipes shall be removed. 11. FINAL GRADING FOR DRAINAGE: The con~ractor is responsible for final grading so as to ensure that surface runoff does not adversely effect the septic system consm~cted, adjacent septic systems, or adjacent structures. 12. SOIL COVER REQUIREMENTS: The con~ractor shall ensure that the final cover over the tank and drainfield is either compacted adequately when backfilling, or mounded sufficiently to ensure that there is adequate soil cover over the lank and drainfield after settlement occurs. If seasonal conditions prevent this, the property owner (or his representative) shall be notified that additional fill may be required after settlement occurs. This notification is of extra significance when the property is changing ownership. 13. CIIANGES IN CONSTRUCTION COSTS: The contractor is responsible for obtaining approval from the property owner for any additional construction cost~ associated with design modifications or changing field conditions prior to doing the work. 14. WORKING IN RIGHT-OF-WAYS AND TRESPASSING PRIVATE PROPERTY: Thc contractor is responsible for coordinating (including payment of encroachment permit fees) all access through public and private properties with the appropriate authorities and/or property owners. Furthermore, the contractor shall inform all parties of any potential impact~ to adjacent properties prior to beginning any cons~oction. 15. MAINTENANCE & OPERATIONS MANUALS: The conUactor shall provide the homeowner with the manufacturer's installation/maintenance manuals for all system component~ installed under this con~-act. If not given directly to the property owner, the manuals should be enclosed in a protective cover (plastic hag) and placed/secured in a prominent location so the property owner can find it. 16. INNOVATIVE SEPTIC SYSTEMS. START-UP INSPECTIONS: The contractor shall notify Anchorage Tank & Welding Company (272-3543) after the installation of an Intermittent Sand Filter kit or Advantex system (supplied by Anchorage Tank) is installed so that the appropriate start-up inspection can be scheduled. This notification also activates the quarterly maintenance schedule. Such notification is usually not required for BioCycle installations since "BioCycle of Alaska" is typically involved with the installation. The contractor shall contact BioCycle of Alaska (283-9003) regarding any start-up notification requirements. · Well Driller Responsibilities: 1. The well driller shall ensure that he has a well permit in possession prior to drilling the well. 2. The well driller shall physically verify that the there are no septic systems, or other potential sources of contamination, within the protective radius of the proposed well prior to drilling it. Page4 of 7 AWWC, Inc., Year2001 · Engineer Responsibilities: 1. SYSTEM DOCUMENTATION: The engineer is responsible for inspecting the installation of the septic system and preparing as-built documentation, to the satisfaction of the M.O.A.. Inspections are performed as necessary to document the consn'uction of the system to the satisfaction of the M.O.A. In all cases, inspections shall be performed as necessary to establish the following: * The original grades at the drainfield/s site * The bo,om of all ~ench/bed excavation * Top of sand on all sand filters * Top ofdrainpipe * Septic tank, or lift station, or holding tank prior to backfill * Placement of filter fabric and insulation * After final grading is completed 2. LIMITED AUTIIORITY: The inspecting engineer has no direct authority over the contractors activities or consmsction/safety practices. Should the engineer identify conditions which dictate a design change, he or she will recommend that work be stopped, and/or the design be modified. If design modifications are necessary, the engineer shall notify the property owner or his/her representative. The inspecting engineer does not have the authority to direct the contractor to modify the system design in such a way that it would be in violation of State or MOA regulations. 3. SEPTIC TANK INTEGRITY: The engineer shall inspect the condition of the existing septic tank and determining its suitability for re-nsc. Ifthe engineer determines the septic tank to be sU'ucturally unsound, it must be replaced. 4. COORDINATION OF DESIGN CHANGES WITH TtIE MOA: If design changes are necessary, the engineer will coordinate the approval of the changes with the MOA. The contractor does not have the authority to proceed with any design modifications until verbal or wfiUen approval is obtained from the MOA. 5. COORDINATION OF WAIVERS: If, during construction, it is determined that a waiver will be required in order to install the system as designed, the engineer will apply for the necessary waiver/s to the appropriate State or MOA regulatory bodies. The engineering services and State/MOA fees associated with such waivers will be additional charges to the property owner, over and above the installation inspection fees charged by AWWC, Inc. *********************************************************************************** SECTION IV. CONSTRUCTION GUIDELINES: Construction shall be in accordance with the approved site plan and design drawings and any special provisions noted on the municipal well and/or sewer permit. All materials, components, workmanship, and construction practices shall comply with the Municipality of Anchorage's latest ordinances regarding wells and septic systems, as well as DSD policies. The failure of the inspectin_~ engineer to notice a material or gonstruction non-compliance does not relieve the conlractor of his/her responsibility, to correct such a deficiency. · Septic Tank, Holding Tank, or Lift Station Installation: I. The burial rating of the lank shall be adequate for thc actual burial depth encountered. 2. The tank shall be level and sufficiently bedded to prevent settling or shifting ofthe lank. 3. All standpipes on the tank shall extend a minimum of 12 inches above final grade. 4. Tanks installed with less than 4 feet of cover shall be insulated. See "Contractor Responsibilities", paragraph 12 regarding final soil cover. 5. The sewer service line from the house to the tank shall be sloped a minimum of 1/4" per foot, unless prior approval is obtained from the engineer. Page5 of 7 A WWC, Inc., Year 2001 6. The inlet and outlet lines from the tank shall be bedded in dralnrock or the soil shall be adequately compacted to prevent future settlement of the soil. 7. A foundation clean-out will be installed ( 1-4 feet from the house) ifone does not currently exist. g. Post tank clean-outs shall be installed per MOA requirements. Does not apply to holding tanks or lift stations with pressurized lines. 9. In high groundwater areas, all tanks shall be anchored to resist buoyancy forces when there is not adequate soil cover to resist the uplift force. The engineer shall make this determination. 10. The final soil cover shall be graded so that there is positive drainage away from tank. 11. All holding tanks and lift stations shall have an audible and visible alarm inside the residence. 12. All lift stations shall be wired in compliance with all MOA guidelines and the Uniform Electrical Code. A municipal eleca'ical permit and inspections must be obtained in areas where required by the Municipality of Anchorage. 13. The contractor shall remove the old tank, or abandon it in compliance with the Uniform Plumbing Code (UPC). The conn'actor is solely responsible for the abandonment procedure. 14. ISF AND ADVANTEX INSTALLATIONS: The conn'ol panel for the Intermittent Sand Filter and Advantex systems shall be located outside the residence, for easy access during inspections. A remote alarm must be installed inside the residence as per DSD requirements. Mounting the panel directly to an exterior wood wall should be avoided because the closing of the relays creates a "clanking" noise that may be offensive to the property owners. 15. ISF INSTALLATIONS: The air compressor shall be equipped with 0 to 10 psi gauge for the po~pose of monitoring air flow to the sand filter. The pressure gauge will be located so that it is easily monitored by the property owner. * Installation of Conventional Absorption Bed & Trenches: 1. Excavate the proposed bed/wench to the dimensions shown on the design. The botlom of the excavation shall be within 2 inches of level (2 inch maximum variation between high and Iow spots). If the sidewalls or bonom of the excavation become smeared, they must be raked or scarified before placement of the filter sand or drainrock. 2. The t~ench or bed should be at least 5 feet from the test hole excavation. 3. All soil tests and excavation depths are advisory to the design and are to be verified in the field by the engineer. If design changes are necessary, and the changes effect the conWactor charges to the property owner, the contractor shall obtain approval from the property owner prior to proceeding with the work. 4. Once the dralnrock is installed, the distribution pipe is to be placed level (0.02 feet difference between high and Iow shots) with the perforations faced downward. Drainrock is then to be placed over the dis~ibution pipe, to provide a minimum of 2 inches of cover over the pipe. The drainrock shall not be pyramided over the drainpipe but shall be the same elevation over the entire trench/bed width. 5. A silt barrier must be installed between the final drainrock layer and the native soil backfill. The silt barrier shall cover the entire drainrock surface. 6. Monitor tubes shall be installed at the locations shown on the design drawings, and extend a minimum of 12 inches above final grade. The portion of the monitoring tube extending through the drainrock shall be perforated from the bottom of the trench/bed to the invert of the dis~ibufion pipe. ?. Backfill over the £mal drainrock layer must not be less than 2 feet. Insulation must be installed when the backfill depth is less than 3 feet. The insulation shall cover the entire wid'~h of the trench/bed, the contractor shall "shoot" the final grades to ensure cover depth is adequate, prior to notifying the engineer that the work is complete. The final cover over the drainfield must graded so that there is no potential for water to pond over the trench/drainfield. See "Contractor Responsibilities", paragraph 12 regarding final soil cover. 8. If an altematur valve was installed with this design the contractor shall provide a functional valve key tu/ the properly owner. · SECTION V: DISCLAIMERS Page 6 of 7 AWWC, Inc., Year2001 UNFORESEEABLE SITE CONDITIONS: The design of this septic system, prepared by AWWC, Inc., was based upon a limited evaluation of the soil, groundwater, and site conditions. The extent of the evaluation is consistent with standard engineering practice in the field. Furthermore, this design was evaluated and approved by the engineers or technicians on staff at the Municipality of Anchorage, DSD, based upon the information provided to them. Occasionally, during eons~uction, unforeseeable subsurface conditions (high groundwater, poor soils, buried debris,....) ~re encountered that make the proposed installation not feas~le. In such cases it is typically necessary to do more soils testing, groundwater monitoring, and design work. These additional engineering services will be performed on a fee basis at an hourly rate. AWWC, Inc. will obtain verbal authorization from the property owner (or his/her representative) prior to proceeding with the work, and will provide a wrinen estimate if requested. The property owner should discuss with the contractor any changes in the installation cost associated with the design changes. IF TIlE PROPERTY BEING SOLD AND FUNDS ESCROWED FOR TIlE UPGRADE, it is important to bear in mind that the ability to upgrade the septic system on this property is not 100% certain (for the reasons stated in the previous paragraph). There is always the possibility that conditions could be encountered that would prevent the installation of anything other than a holding tank. Although such a situation would be rare, it is important that all parties recognize that such a scenario is possible. SEPTIC SYSTEM PERFORMANCE: The design of this septic system is based upon limited soils testing, groundwater monitoring, and a visual assessment. It is possible that the actual soil conditions are less favorable then the testing data indicated and that adverse, unforeseeable, changes in the surface/subsurface water conditions could impact the performance of the system. Numerous other factors, out of the control AWWC, Inc., may adversely effect the long term performance of the system. Such factors include, but are not limited to. excessive number of residentS in the house, plumbing leaks, the use of septic system additives, failure to pump septic tank regularly, failure to alternate drainfidds (when this is an option), or/and excessive use of water. Given these variables, it is not possible to warrantee the performance of a septic system. ********************************************************************************** IBy proceeding forward ~vith this installation, the Engineer, ~.V. ell Driller, .Contrac. tor,I and Property Owner agree that they hav.e..r, ead thes.e specffications aha agree to accept the terms and cond~taons outhned in them. Page7 of 7 { { · t