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Home My WebLink About20182199.tiffCENTRAL WELD COUN'T'Y WATER DISTRICT March 12, 2018 Eric Wernsman 16493 Essex Rd S Platteville, CO 80651 RE: Can Serve Dear Mr. Wernsman, This letter is in response to a request for water service to serve the following property described as follows: T SW4 22-2-67 LOT B REC EXEMPT RE -3877 Parcel: #131122300002 Water service can be made available to the above -described property located on County Road 19 between CR 18 & 20 with new tap purchase provided all requirements of Central Weld County Water District, Northern Colorado Water Conservancy District and the U. S. Bureau ofeclamation are satisfied. Central Weld County Water District will require that a Tap Agreement be consummated prior to the setting of a tap or this letter shall become null and void unless extended in writing by the District. Subdivisions requiring 10 or more taps will be required to purchase and transfer raw water prior to District approval. Please note that it is your responsibility to contact Northern Colorado Water Conservancy District at 800-369-7246 for petitioning confirmation into the Northern Colorado Water Conservancy Pistrict Central Weld cannot issue a tap until all requirements are sates/ied This is in accordance with the Rules and Regulations off' Northern Colorado Water Conservancy District A review of the District's system in this water service area will need to be done prior to a water tap being sold. A water tap installation is for a specific parcel of property and a customer will not be permitted to extend a service line from one parcel or property to another parcel to provide additional water service. Due to the rapid cost increase of raw water, existing tap fees may not apply for water service to this property. The District will not notify, by separate letter, any prospective landowners or land purchasers of tap fee or line extension cost increases. The cost of a tap fee and/or line extension must be paid in advance to the District by the prospective customer in accordance with District policy within one (1) year from the date of this letter It is your responsibility to confirm with your local Fire Protection Authority if fire flow water capacity is required for your project. Sincerely, CENTRAL WELD COUNTY WATER DISTRICT tar"ei/t S ' n Linker; I stri ct Manager SL&kn • 2235 2nd Avenue • Greeley, Colorado 80631 • Phone (970) 352-1284 • Fax (970) 353-5865 Stan Linker, District Manager WE RN SMAN ENGINEERING AND LAND T)EVELOPMENT LLC March 19, 2018 Weld County Health Department 1555 N 17th Ave Greeley, CO 80631 Eric Wernsrnan 16493 Essex Rd S Platteville CO 80651 RE: Septic System for Expedition Water Solutions EWS #6 Site To whom it may concern. The septic system for Expedition Water Solutions on Parcel # 131122300002 will be designed if the USR is approved. If you have any further questions or comments regarding this matter, please contact this office. Sincerely, Eric Wernsman P.E. ON -SITE WATE 'ATER TREATMENT SYSTEM RECOMMENDATIONS FOR EIS #6, IN PART OF THE % OF SECTION 22, TOWNSHIP 2 NORTH, RANGE 67 WEST, (COUNTY ROAD 19), WELD COUNTY, COLORADO FOR EXPEDITION WATER SOLUTIONS CIS ENGINEERING CORPO►RATIOMN LOVELAND, COLORADO PROJECT NUMBER 18-9282 JULY 13, 2018 CDSEngineering Corporation July 13, 2018 Project No. 18-9282 EXPEDITION WATER SOLUTIONS 2015 Clubhouse Drive, Suite 201 Greeley, CO 80634 Dear Gentleman, Enclosed is the report you requested of the on -site wastewater treatment system recommendations for the proposed new facility to be in part of the SW1/4 of Section 22, Township 2 North, Range 67 West, County Road 19, Weld County, Colorado. The design criteria and recommendations provided in this report are in compliance with Weld County regulations for On -site Wastewater Treatment Systems. The system should function adequately if installed, operated, and maintained in accordance with this criteria. If you should have any questions concerning the information in the report, please feel free to contact this office. Reviewed by: lib Kevin F. Becker, Enclosures Respectfully, FOR AND ON BEHALF OF CIS ENGINEERENGINEERM CORPORATION 6.Eriz, Engineering Technician 165 2nd Street S.W. a Loveland, CO 80537 • (970) 667-8010 • Fax (970) 667-8024 r, www.cds-eng.net TABLE OF CONTENTS Letter of Transmittal Table of Contents Scope Site Investigation Site Location and Description Subsoils and Groundwater Conditions Soil Treatment Area Materials Absorption Field Backfilling and Site Grading Conclusions ti ATTACHMEN'IS Site Drawing and Location of Test Pits Septic System Design Details WTS Details Septic Tank. Details General Notes Log of Test Pits Soil Treatment Area Calcplations General Maintenance Recommendations 11 Page. 1 . . it 1 1 I 2 2 2 3 4 4 Figure No, 1 Figure No.2 1-' i gu re No. Figure No. 4 Figurer No. 5 Figure No. Figure No. 7 Appendix I 1 SCOPE This report provides on -site wastewater treatment system recommendations for the propose new facility to be located in part. of the ►'1 of Section 22, Township 2 North, Range 67 West, County Road 19, weld County, Colorado. it is::our understanding that this system will service a commercial facility for 9 full time and 60 transient employees with no future expansion planned at this time. The wastewater strength is anticipated to be similar to that of domestic wastewater as defined by the State OWTS Regulations. SITE MIEST1C/ITIO T field investigation, performed on April 13, 2018, consisted of logging two (2) test pits to depths ranging from seven and one-half (7½) to eight (8) feet. The Location of the Test Pits is shown on Figure No. 1. A Log of Test Pits is shown on Figure No. 6. The descriptions of the soils are based, primarily, on visual and tactual methods which are subject to interpretation. Other than the distances to setback objects indicated on the design documents, no other objects requiring setbacks from the proposed on -site wastewater treatment system (OWTS), as indicated in Tables 30-7-1 and 30-7-2 of the Weld County Regulations, have been located or observed during our exploration. SITE LOCATION AND DESCRIPTION The site is located east of Firestone, south of County Road 20 and on the east side of County Road 19, Weld County, Colorado. The siteis generally in a plains region with dirt roads and utilities, and vegetation consists primrii► of grasses. The site has a very slight slope to the cast. No water wells or other water features were observed at this site. An oil well is located on the site. Historically, this site appears to have been used for agriculture. Based on information available to us at the time of this report, easements are not noted on the property. We recommend title work, or other means, be completed prior to construction to ensure the property is clear of easements. From information provided on the County Property Information Portal Maps, this property is not located in ,a floodplain. 2 SUBSOILS AND GROUNDWATER CONDITIONS Based on the test pits logged within the proposed soil treatment area, the subsurface conditions at the site consist of silty clay and silty clay loam. Based on the soil texture and structure within the soil horizon observed in the test pits, the classification used for this design is Soil `Type 4A. Groundwater levels were recorded at the time of our field exploration. During our field explorations groundwater was encountered in the test pits at depths ranging from six (6) to seven (7) feet, Redoximorphic features were observed at a depth of six (6) feet in Test Pit No. 1. We do not anticipate the high groundwater level to be within four (4) feet of the infiltrative surface. Based on the conditions described above-,, an absorption system should be suitable for this site.. SOIL TREATMENT AREA, Based on the conditions in the test pits, the. infiltrat ive surface shall be placed no deeper than two (2) feet blow existing rades. 1\4ATERIALS The materials used in construction of the on -site wastewater treatment system shall be new, • durable and not subject to corrosion, such as concrete, fiberglass or plastic. All materials shall be installed per manufacturer specifications. All connections between components shall be water tight to prevent leaks and infiltration. bang Unperforated plastic pipe used in gravity flow beds shall have a nominal diameter of four (4) inches, and a wall thickness of 0.120 inches, or greater. SDR 35 or Schedule 40 pipe could be used. The piping from the building to the septic tank and from the tank to the field shall have a minimum fall of/s-inch per foot ('/(VI inch per foot preferred). Perforated piping used in the absorption bed or trench shall have a minimum nominal diameter of three (3) inches, and a wall thickness of 0.070 inches, or greater. ATM D2729 sewer and drain pipe is acceptable for this application. Piping under pressure in a pressurized system shall be a. 3 minimum of Class 200 PVC. Pipe lain in beds or trenches shall be level. The terminal ends of all lines shall be capped. Pipe bends shall be limited to 45 degrees or sweeping 90 degree 91's. ravity flow building sewer and effluent lines shall be buried a minimum of one (1) foot. All pipe bedding and trench compaction shall be in accordance with the manufacturer guidelines. Septic Tank Septic tanks shall meet the provisions set forth in the county on -site wastewater treatment regulations, and be constructed in accordance with ASTM C1227. Tanks shall be placed a minimum of five (5) feet from any dwelling or building with a permanent foundation. The tank shall have a minimum of two (2) compartments. Tank size is based on design flow. See Figure No. 2 for specific tank size. The tank lid shall be able to support a minimum of four (4) feet of soil cover. Tank manufacturer shall provide specifications on maximum cover depth and other design features. These should be provided to the engineer prior to delivery. Access risers shall be provided for each compartment of the septic tank. Risers shall have a minimum 24 -inch diameter opening and extend to, or above, ground level. Riser lids shall have a secure closing mechanism to prevent unauthorized access. Tanks should be sold and del ivered by the manufacturer or manufacturer's representat we. Distribution Box Distribution boxes shall be placed on solid, level ground to provide uniform distribution of the effluent. Flow equalizers, such as speed levelers, shall be installed. The box shall be a minimum of five (5) feet from the septic tank, and be sufficient size to provide outlets for all lateral lines, otherwise additional distribution boxes may be required. Access to the distribution box shall be provided by a riser, similar to that *described for septic tanks. ABSORPTION 'FIELD The absorption field shall be placed a minimum of twenty (20) feet from a structure with a basement, crawl space or foundation drain. The .distance can be decreased to ten (10) feet from structures without a basement, crawl space or foundation drain. The field shall be constructed in 4 accordance with this report and the drawings provided. The infiltrative surface and distribution. lines, or chambers, must be level. Trenches shall be no wider than three (3) feet; beds shall be no wider than twelve (12) feet. Beds shall be separated by six (6) feet, of soil, sidewall to sidewall. Trenches shall be separated by four (4) feet of soil. Inspection ports, accessible from the ground surface must be installed at the terminal end of each line in a trench system and each corner of a bed system. The inspection port tube must extend to the bottom of th.e infiltrative surface and not be connected to the end of the distribution pipe. The bottom of the inspection ports. in contact with the media shall be perforated or saw cut. Where chambers are used, the inspection ports shall beinstalled per the manufacturer's recommendations, at the end of each line. See Figure No. 2 for information specific, to this project. BACKFILLING AND SITE GRADING, All major grading shall be accomplished before construction of the sewage disposal system. Backfilling around septic tanks shall be accomplished before the installation of the piping. Backfill around the: tar( shall be in a manner to prevent settlement and avoid undue strain on the tank. Positive drainage from, and around, the bed must be provided by sloping, mounding, ditching or bermmg. CONCLUSIONS The system should be constructed by a licensed septic system installer, in accordance with the County On -Site Wastewater Treatment Regulations. An effluent filter could be installed in or after the septic tank and nmy provide a longer life for the system. Minimum dimensions and setback requirements specified by the state or county health department regulations shall be upheld. It is the contractor's/owner's responsibility to inform the engineer or health department of anything not mentioned in this report that may impact the performance of the septic system. This system is to meet all rules and regulations set forth by the County Wealth Department. The system is to be inspected by a representative of the County Health Department and Engineer, prior to backfilling. All future owners are to be directed to information in Appendix .1 (General Maintenance Recommendations) of this report. These tests are only valid for the areas tested. Additional percolation tests and soil profile information will b.e required if the septic system is to be constructed in a different location than covered by this exploration. The findings and recommendations of ths report have been obtained in accordance with accepted engineering practices in the field of Gcoteehnical Engineering. There is no other warranty, either expressed or implied. The county health department has final acceptance over these test results and referenced system. All. construction shall be in compliance with the septic system permit. c 150 000000 000000 O 00 O 0o O 00000 DIG DEo• TP-2 C LE 1":=150' =150' T-- .,,I-2_1 _,_4_ ,a # ' • 4 q ti �9 �•! ■c• . y. .r 110' �% km I we f y Q 1 • r ••, r r • '4 •`I .. 1 t PROPOSED Cy SEE FIGURE - 2 EXISTING OIL WELL T C Site Drawing and Location of Test Pits aAl`1='s? .0 K I -' WbIC.t't3C• ,.__--ifs ntaens1I R--s't.L1+C L --z---. -- -fara - .n, rr. 9 - rAy.--.._3 �.;c.- ..-.-- Client: Expedition Water Solutions Project: EWS #6, in Pt. of S'A074 of S22 --T2 R67, Weld County (CR 19) Weld Coun-.y, Colorado I i. Ir..r,a- 4 1 smr---,.rin�,� Engineering Corporation 105 2nd St, S.T., Loveland, Colorado 00537 Telo: (Oto) 667-0010 flu at Jr i t Date: 07/09/18 aim£_i.c zinc— --_� _ —r—r - •. a.3 n: a'ai.. •l .c is Project No. 18-9282 r4 !?T . •_ HEADER, SLOPE TO MANIFOLD MANIFOLD, INSTALL LEVEL uit 1- D ') INSPECTION PORT, TYP. 30 U D -BOX PROPOSED BUILDING 1000 GALLON SEPTIC TANK TP-1� 12' I 1 1t 12' 30 0 0 .1i. L I 0 0 20' PAIN 1 V /-CLEANOUT • a a i • a • • • • • • . • • • TP-2 • • • • • ■ • a • a as• a • • 4 • • 1 a 1 a • • • • • a • • • • • ■ • • • ■ • a • • ■ • a ■ ■ ■ ■ • • • • • a ■ a • • ■ . I • o II • • • • a • • ■ a a • a • a • • ■ • ■ . • • • • • • • ■ • 4 I • • • ■ • 7 a .• ♦1 F • • • • • ■ • t • • 4 • ■ • a • / • • • • • ■ • • e • • J • •• • ■ . . • a • b • • a• •• ■ • • • . •• a • • • • • ■ • • a • • a • • • • SCALE 1"=30' Septic System design Details . . - r ..:z I r tz .at�.-.�.z. • .� -� z • z� • J • -Jr,.• • -ai �- tail . YFT/GO Trans Empl. GPD: 48O LTAR: 0.30 SOIL: 4A ABSORPTION AREA: 2736 sq. ft. CHAMBERS: 228 SEPTIC TANK: 1000 gal. PUMP TANK: NA LIMITING LAYER: 6' STA DEPTH: 2' MAX St . _t.. 1r Client: Expedition Water Solutions Project: EWS 1/6, in Pt. of SO of S22 —T2 —R67, Weld County (CR 1 ) Weld County, Colorado 165 2nd St. S.1., Loveland, Colorado 00537 Tale: (070) 667.8010 Date: 07/09/18 -W yr .• "11_1111_,..a• . , .. . Project No. 18-9282 Drawn: - _'—"'o -T4r- — • ••.r..y'd..I'r . trra-; •l -•_ SLOPE SURFACE TO PREVENT POND1NG AND PROMOTE RUNOFF. T iQaI Crass_ Ctbi �.-m .. r - Ti TT. j-Yd1.C -i .T-- t3T.--II :, - .-T -r. •�, .�. _.. f ._ -- rye• --J-ln T_- ,- GRAVITY CHAMBERS ESTABLISH VEGETATIVE COVER NATIVE BACIKFILL OBSERVATION PIPE (4) 12 FEET FINISH GRADE 4" PIPE FROM TANK -SE 0-11 OWTS Details w--+:t.-a��.t.fl ..-s Z�� ta-r__-:m:r-eve a'. t -v—J._t Arm' CHAMBERS PER REPORT 1c lAIN BETWEEN BEDS 417 OBSERVATION PIPE (4), NOTCH BOTTOM 71(11-{17141-1--IIHI-I INFILTRATIVE SURFACE SLOPE TO STA Client: Expedition Water Solutions Project: EWS #6, in Pt of Set of 522 —T2 —R67, Weld County (CR 19) Weld County, Colorado PIPE TO ENTER TOP HOLE OF END CAP. 105 2nd St, 8.111, Loveland, Colorado 00537 Tele; (070) 607- 001 0 Ir I IN —SITU MATERIAL Figure: J •-t.��•� _ -It - TYPICAL CONCRETE SEPTIC TANK a- -. rtr • INSPECTION ACCESS RISER TO GRADE, WITH LID SEALED WATER TIGHT TO TOP OF TANK INLET PIPE, 4" 0 D-3034 OR SCH 40. MIN. 34" PER FT. WITH NO PORTION LESS THAN Y4" PER FT. 24" MIN I 4' MAX 1 3 • INLET TEE, SWEEPiNG REND c Liquid level GM` fir - • r .4 LID AT GRADE FILTER HANDLE, PLACE WITHIN 1' OF TOP "t" 0 ASTM 0-3034 OR SCH 40 FOR GRAVITY. FOR PRESSURE SYSTEM SCH 4O. SEE REPORT FOR SIZE. EFFLUENT FILTER, REQUIRED FOR PRESSURIZED SYSTEM 1. State and county approved precast concrete or plastic tank required. 2.. Tank must be placed level. 3. Tanks must be watertight. -. Must have two or more compartments or more than one tank can be used in series. The first compartment of a two —compartment tank or the the first lank in a series must hold no less than one—half of the required effective volume. 5. Inlet invert must be at least two inches higher than the outlet. 6. At least one access opening no less than 20 inches across must be provided in each compartment of the tank. 7. Septic tanks must have watertight riser over each access manhole and and all risers must extend to or above final grade. 8. Each riser lid must be watertight, brought to or above the surface, and must have a secure closing mechanism. 9. For new construction, the top of any septic tank, dosing tank or vault must be no deeper than four feet below finished grade. 10. See report and state or county regulations for additional information. Arta e'Frra—%3alititt —afl W.--a-Jitr- aa-- Cu�vrr •JJQ'!•Ct•Jtar,-J Tiv_ l.S-.�a-.6se�.nr—a.e AA -it ...r.+ Septic Tank Detail t Client: Expedition Water Solutions Project: - EWS #6, in N. of SWYa- of S22 —T2 --R67, Weld County (CR 19) Weld Coun ty, Colorado -- ..• .._. -"s-4 .,r. -wt.... • . ri ,. ca. - — r rrir a- -- --r_r •a — - Date: 07/09/18 . - rr-4. v .. = Taws r -r vat -r, ti Tr! a-Th.. r. rr..r Drawn: JDE Figure: .. _ ',el a-i'S it Topsoil should be saved for final cover. 2. SEPTIC TANK: 2 compartment tank. Locate a minimum of 5' from residence and/or distribution box. Manhole lids and risers shall extend to the surface. Inlet tee must consist of a sweeping bend. ABSORPTION AREA: Shall not be excavated in a manner that will compact or smear the infiltrative surface, i.e. no wheel loads. infiltrative surface to be level. Bed area and dimensions are provided on this drawing. SUPPLY LINE: Shall be solid ASTM D3034 (SDR. 35) or Schedule 40 PVC laid with a minimum fall of 1/4" per loot (with no portion less than 1/8" per foot). Pipe shall be a minimum of 4" in diameter. All pipes, except distribution laterals, shall be bedded with select materials. See county regulations. Bedding and backfill material shall be compacted to reduce settlement. 5. Sewer line between the building and the septic tank shall be a minimum of 22" deep or protected from freezing. 6. CLEANOUTS: Required between the building and the septic tank. Shall be installed within 5' of the building and at intervals not to exceed 100'. Also any change in direction greater than 45 degrees. See county regulations for additional requirements. 7. DISTRIBUTION BOX: If used, shall be laid level for uniform distribution of effluent. Flow equalizers shall be installed. Install riser to surface. 8. CHAMBERS: Quick 4 Standard Chambers. Chamber information based on published material by Infiltrator Systems, Inc., and State Regulation 43, Section 43.13 (e)(1)(d). If alternate chambers are to be used notify engineer prig to construction as bed configuration may change. 9. STA width shall not exceed 12' and shall be no deeper than 4'. Minimum distance between beds is 6' sidewall to sidewall. Minimum distances between trenches is 4', sidewall to sidewall. 10. INSPECTION PORTS: Shall be accessible from the surface. To be installed at the terminal end of each The or chamber row for a trench system; or at each corner of a bed system. They shall extend to the infiltrative surface. Ports shall be perforated or saw cut on the bottom portion in contact with the media. May be installed directly into chamber per. mfr. specifications if the infiltrative surface can be seen. 11. COVER: Cover material to consist of native soils capable of supporting vegetation. Vegetation should be a drought resistant grass such as a tall fescue.. Installer & owner shall coordinate on planting and maintaining seeds to germination. Tall grass shall be kept short during the winter months. 12. SITE DRAINAGE: drainage shall promote water runoff over the bed and prevent ponding within 10' of bed. 13. SITE USAGE: Vehicle and hoofed animal traffic shall he prohibited over top of bed. 14. See Report and County or State Regulations for additional information. OWTS General Notes .Z -a -• =Ti --tip"- •-e tr9Ta---f-.,-fir t- r ,. -t- Ilraa Client: Expedition Water Solutions Project: EWS #6, in Pt. of SWY4. of 22-12—R67, Weld County (CR 19) Weld County, Colorado 414 -7 -S - r -. - •it - I Engineering Corporation 105 2nd St. SAL, Loveland, Colorado 00537 Tele: (970) 067-0010 soma a Sa aa- t III 44raWan sass Date: 07/09/18 Project No. 18— ►282 Drawn: JDE Figure: 5 - —' - 2' o' TP-1 TP--2 Cloy loom, brown, friable, moist, Shape: Prismatic Grade: Weak Soil Type: 2A Silty clay, brown/w. IL brown mottles, friable, moist to v. moist Shape: Blocky Grade: Weak Soil Type: 4A Clay loam, brown, friable, moist, Shape: Prismatic Grade: Weak Soil Type: 2A Silty cloy, brown/ye. It. brown mottles, friable, moist to v. moist Shape: Blocky Grade: Weak Soil Type: 4A massive, structurless Grey/brown, wet, Redoxmorphic Groundwater roma massive, structurless ,Joim ._.,._.—...__..•••drIP•• .91..` Groundwater -- ilimamma.._.. -- ... . Limiting layer: Yes Depth: 6' Groundwater Type: RecFoxmorphic features 7' Limiting Dryer: Yes Depth: 6' Type: Groundwater Groundwater c Date of Exca.va:HIon 04/1 3/1 8 Soli Type (NRCS> Date of Investigation 04/13/18 Equipment Backhoe Technlclan JDE Vona loamy sand, 0 to 3 percent slopes LOG OF TEST PITS Client: Expedition Water Solutions Project: EWS #6, in Pt. of SW of 522 —T2 —R 7, Weld County (CR 19) Weld County, Colorado Engineering Corporation 165 2nd St, SAL, Loveland, Colorado 00537 Tele: (070) 0187--8010 ..—..t%Sew r•.+rrt, .••.* .• Date: 07/09/18 1C9 .-ITS-'- - - Project No 18-9282 Draw: JDE Figure: 6 SOIL TREATMENT AREA 9 CALCULATIONS ,...: 9 Full Time/60 Transient Emp. Minimum Septic Tank Size: 1000 Design Flow LTAR 480 (Tables 30-64 & 30-6-2, WCHD On -site Wastewater Regulations) 0.15 (Table 30-10-1, WCHD On -Site Wastewater Regulations) Adjustment Factors (Tables 30-10-2 & 30-10-3, I/ClD On -site Wastewater Regulations) Gravity 1.2 Chambers 0.7 Type of Chamber used: Infiltrator Quick 4 Standard Effective Area of Chamber: 12 Minimum STA (sq. ft.: 2688 Total Infiltrative Surface Area (It2) 2736 Soil Type: 4A Bed Configuration Designed Number of Chambers 228 Calculation Formulas Minimum Absorption Field Size (ft 2) Design Flow LTAR Adjustment 'c Factors . Eme 480 0.15 x 1.2 c 0.7 2688 Minimum Number of Chambers Berl Area 2688 Effective Area 12 224 Units CLIENT: Expeditor] Water Solutions PROJECT NO. 18-9282 LOCATION: EWS 116, CR 19, Weld County 165 2nd St SW 0 Loveland, CO e 80537 e 970-667-8010 G www.cds-eng.net Engineering Corporation Fig. No.: 7 \\SERVER\CDS Files\Structural-Geotech\Projects\Expedlition Water Solutions\EWSff6\18-0282 OWTS C.alc.xlsx APPENDIX I GENERAL MAINTENANCE RECOMMENDATIONS FOR INDIVIDUAL SEWAGE DISPOSAL SYSTEMS The following minimum recommendations, if followed, should help increase the lifetime of the system 1. Septic tanks should be pumped as often as needed based on usage. Generally, when the scum layer plus the sludge layer equals 25% of the liquid depth in the tanks, it should be pumped out. 2. Septic tanks and distribution boxes should be checked at least once a year for sludge accumulation which may clog the soil treatment area if overflow occurs. Thesoil treatment area should not be used for grazing, sports activities, traffic, or other activity which may compact the soils. Schedule 40 pipe should be used if lines arc to be placed under driveways. 5. Trees should not be planted within .10 feet of the soil treatment area so as to prevent roots from clogging the system. If trees are to be planted nearby, they should be located so that the soil t e trnent area is not shaded. 7. Overuse of strong chemicals, which may kill the bacteria in the system and inhibit decomposition of the sewage, should be avoided. 8. Positive drainage should be maintained over and around the absorption field area to prevent pooling of water. REV 09/21/17 Hello