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HomeMy WebLinkAboutMonitoring & Maintenance Agreement-Stormwater Mgmt MONITORING AND MAINTENANCE AGREEMENT FOR STORMWATER MANAGEMENT City of Prior Lake, Minnesota THIS AGREEMENT is made and entered into this 21 day of JUNE , 2013 , by and between the City of Prior Lake, a Minnesota municipal corporation, organized under the laws of the State of Minnesota("CITY") and Haynes Properties, a Minnesota LLC ("OWNER"). RECITALS WHEREAS, the OWNER has proposed construction of a commercial building for Honest 1 Auto Care ("DEVELOPMENT") on property within the CITY; and WHEREAS, in evaluating the design of the project, the CITY requires certain stormwater management standards be met; and WHEREAS, water quality, rate control, and volume control are important stormwater management standards, required by the CITY; and WHEREAS, the OWNER has submitted a plan for construction and maintenance of stormwater management practices designed to meet CITY standards. NOW THEREFORE, based on the mutual promises and covenants set forth herein, the sufficiency of which is hereby acknowledged, the parties hereto agree as follows: 1. Purpose. The purpose of this AGREEMENT is to set forth the terms and conditions for the construction, monitoring, and maintenance of the water quality, rate control, and volume control stormwater management facilities for the DEVELOPMENT ("STORMWATER FACILITIES"). 2. Recitals. The recitals set forth above are incorporated as if fully set forth herein. 3. STORMWATER FACILITIES Required. The OWNER will construct the DEVELOPMENT on land legally described in Exhibit A. Exhibit A is incorporated herein as if fully set forth. In connection with the construction of the DEVELOPMENT, the OWNER is required to construct STORMWATER FACILITIES. 4. Design and Installation of STORMWATER FACILITIES. 4.1 The STORMWATER FACILITIES shall be constructed in accordance with the site plan ("SITE PLAN") approved by the CITY. Said SITE PLAN is attached as Exhibit B. Exhibit B is incorporated herein as if fully set forth. 4.2 The SITE PLAN of the STORMWATER FACILITIES will not be changed without prior written approval of the CITY. 5. Monitoring and Maintenance of STORMWATER FACILITIES. 5.1 The OWNER is solely responsible for the monitoring and maintenance of the STORMWATER FACILITIES to ensure that the STORMWATER FACILITIES provide adequate capacity for water quality, rate control, and volume control currently and in the future. 5.2 Monitoring and maintenance activities shall comply with the monitoring and maintenance plan("MONITORING AND MAINTENANCE PLAN") prepared by a professional engineer, registered in the State of Minnesota and approved by the CITY. The MONITORING AND MAINTENANCE PLAN, attached as Exhibit C, shall include (but not be limited to) methods for cleaning, repairing, and other work deemed necessary to ensure the proper function of the STORMWATER FACILITIES. Exhibit C is incorporated herein as if fully set forth. 5.3 The OWNER must implement the MONITORING AND MAINTENANCE PLAN to ensure that the STORMWATER FACILITIES continue to provide adequate capacity. 5.4 The OWNER must annually conduct at least one inspection of the STORMWATER FACILITIES and submit an annual inspection report to the CITY on or before June 30th of each year. The annual inspection report must include enough information to determine if the STORMWATER FACILITIES are providing adequate capacity. 6. Default. A failure to comply with the SITE PLAN or MONITORING AND MAINTENANCE PLAN (collectively"PLANS") or with any of the terms and conditions of this AGREEMENT shall constitute a default of this AGREEMENT. In the event of a default, the CITY shall provide the OWNER with notice as provided for in Paragraph 7. The notice shall set forth the nature of the default and the time within which the OWNER must cure the default, which shall be not less than 2 weeks. Should OWNER fail to cure the default within the time set forth in the notice, CITY shall have the right, but not the obligation to, enter upon the property legally described in Exhibit A and perform the required work to cure the default, except that in the event the nature of the default is such that, in the sole judgment of the CITY, it may pose an imminent potential risk to the health, safety or welfare to persons or property, the CITY may immediately and with no notice to OWNER enter the property legally described in Exhibit A and perform the required work to cure the default. All costs incurred by the CITY to cure the default, including administrative costs, shall be the sole responsibility of the OWNER. 6.1 The CITY shall invoice the OWNER for the costs incurred to cure the default. 6.2 The OWNER shall pay said invoice within 30 days of receipt thereof. 6.3 The OWNER agrees that if OWNER fails to pay the invoiced amount within 30 days of receipt thereof, the CITY may assess the invoiced amount against the property described in Exhibit A. 7. Notices. Required notices to the OWNER shall be in writing, and shall be either hand delivered to the OWNER, its employees or agents,or mailed to the OWNER by certified mail at the following address: ADDRESS. Notices to the CITY shall be in writing and shall be either hand delivered to the City Manager, or mailed to the CITY by certified mail in care of the City Manager at the following address: City of Prior Lake, 4646 Dakota Street SE, Prior Lake, Minnesota 55372. 8. Right to Access. The OWNER grants the CITY the right to enter upon the property legally described in Exhibit A for the purpose of inspection of the STORMWATER FACILITIES, curing any default, or to prevent against any imminent potential threat to the health, safety or welfare of persons or property. 9. Indemnification and Hold Harmless. The OWNER shall indemnify, defend and hold the CITY, its Council, agents, employees, attorneys and representatives harmless against and in respect of any and all claims, demands, actions, suits,proceedings, liens, losses, costs,expenses, obligations, liabilities, damages,recoveries, and deficiencies, including interest,penalties, and attorneys' fees, that the CITY incurs or suffers,which arise out of,result from or relate to any acts or omissions involved in the carrying out of the obligations or rights under this AGREEMENT. The responsibility to indemnify and hold the CITY harmless from claims arising out of or resulting from the actions or inactions of the CITY, its Council, agents, employees, and representatives does not extend to any willful or intentional misconduct on the part of any of these individuals. 10. Recording. The OWNER shall cause this AGREEMENT to be recorded against the property legally described in Exhibit A within 10 days of its execution. The OWNER shall provide evidence of recording to the CITY within 10 days thereafter. 11. Heirs, Successors, and Assigns. This AGREEMENT shall run with the land legally described in Exhibit A and shall be binding against all heirs, successors and assignees of the OWNER. 12. Severability. In the event any provisions of this AGREEMENT shall be held invalid, illegal, or unenforceable by any court of competent jurisdiction, such holding shall not invalidate or render unenforceable any other provision hereof, and the remaining provisions shall not in any way be affected or impaired thereby. 13. Waiver. Failure of either party at any time to require performance of any provision of this AGREEMENT shall not affect its right to require full performance thereof at any time thereafter and the waiver by either party of a breach of any such provision shall not be taken or held to be a waiver of any subsequent breach thereof or as nullifying the effectiveness of such provision. 14. Reimbursement of Fees and Costs. Any fees or costs incurred by the CITY associated with enforcing any of the terms and conditions set forth in this AGREEMENT, including but not limited to CITY staff, engineering and attorney's fees, shall be the sole responsibility of the OWNER. The OWNER agrees that if OWNER fails to pay any invoiced amount within 30 days of receipt thereof, the CITY may assess the invoiced amount against the property described in Exhibit A. 15. Remedies. In addition to any other remedies available to the CITY at law or in equity, including the remedies contained in Paragraph 6 herein, CITY may sue OWNER for damages and/or may maintain a suit for specific performance of this AGREEMENT. All rights and remedies provided to the CITY herein are cumulative and the exercise of one shall not operate to bar the exercise of any other rights under this AGREEMENT or provided by law. 16. Governing Law. This AGREEMENT shall be governed by the laws of the State of Minnesota. Executed by the parties hereto as of the day and date first above written CITY OF PRIOR LAKE / By: r By: / �' ►l.. Ken eth Hedberg, Mayor Frank Boyles, • an ger STATE OF MINNESOTA ) ) ss. COUNTY OF SCOTT ) The foregoing instrument was acknowledged before me this a day of abti , by Kenneth Hedberg, Mayor, and Frank Boyles, City Manager, of the City o Prior Lake on behalf of the City and pursuant to the authority granted by its City Council. ti *, s. CHARLOTTE R.GREEN alae2-7& ,,) /4)-12..e.—L._. ''=;'` NOTARY PUBLIC-MINNESOTA NOTARY PUBLIC My Commission Expires Jan.31,2015 1/4, ✓1./.11.././IJlIJJ../lfllJ✓fIJJ) OWNER By: h 4(7w---- Fred Haynes, President STATE OF MINNESOTA ) ) ss. COUNTY OF SCOTT ) The foregoing instrument was acknowledged before me this 21 day of JUNE , 2013, by COLETTE SWANSON • i cy"' 2ebeioik NOTARY P1 J C:2, ,. + 04:41di4,x,' I*?TkriY rt1' w .!, 1 ,,, Reviewed . . o ,.n a, cut', k �, �.', , B /n, /'i..I // .�d1d '' » 1tz r ! r ' •,v, J Rich. d Rosow iy / ttorney EXHIBIT A LEGAL DESCRIPTION OF PROPERTY Lot 2, Block 1, BUSSE FIRST ADDITION, according to the recorded plat thereof, Scott County,Minnesota EXHIBIT B SITE PLAN / iN ,P411 N ---ios .. rTi C-‘ 1• '</ ,,, ;--; •s/ / / •Jt).' 11%I . . .........----........... At i ..%''''' ..'..A..c, ....., \ •c.a,...,-‘, 0i.f'%.).P-..C„'Av-'.5,3-0'..,.-,-,')."'-,4• 0 • ,-',-- 0 2 A## -o li Ali. *I0§ WAqlt.(. i 4 gI f a •••-,--°-_ ..h... i•9 \ 2", :, ibl 0 • ' \ V/ __ k \ "0 \ \ Atiti.4171/ \ -\ \ Eli b.:,\ II 45 N't ‘ hill I ; (lia $ .441111P .., \P \ 4#, cl. ...\\ .. ‘ VA \ I 0414 4. tra. \ \Z.44Pik \ \ ;$•'47 A , t'''' •-.!'. 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C a -, O — — n o 3Q V E 4, yN RI OH 4 0 0 O yi M C s E .va) 10 a) In Oa) jg C. N 4- E U1. IU 41. Z w U (I) J O CRI Z y N +, i p14.., U L o c o O ` ,L 1L Y Y O RI to L = y o O c � J a) °' ° m v- ar ,^p1 d' O wL v ° L *' c 1C 'E W 0 ° 2 U c V W Tr a c o 0 0 o a' Z a) Ai+ C.) 0 Q to) Q W^ J J r > • C CI C k a L. E v O. Z Z U .U) i (A in 0 c d d L d .. = E a� 0.as in r0 0 e D 0 o O L G H c N d 0 U 0 C C C C N i 0 m C c c c c ft a) C d d -o t E ° m a� m L a. c y 0 y :a C C C a O m 0 5 c i- m Q 222 Report of Geotechnical Exploration Honest 1 Auto Care Prior Lake, Minnesota August 27, 2012 Allied Project 12034 ITCO Allied Engineering Company 7125 West 126th Street, Suite 500 Savage, Minnesota 55378 • Ph: 952-890-5909 Fax: 952-890-5883 FIELD EXPLORATION Four Standard Penetration Test (SPT) borings for the proposed building were each put down to a depth of 20 feet. Two additional borings for the proposed parking lot were each put down to a depth of 10 feet. The borings were put down in accordance with ASTM 1586-84: "Standard Method for Penetration Test and Split-Barrel Sampling of Soils". Using this procedure. a 2" O.D. split barrel sampler is driven into the soil by a 140-lb weight falling a distance of 30 inches. After an initial sct of 6". the number of blows required to drive the sampler an additional 12 inches is known as the standard penetration resistance or N-value. The N-value provides an indication of the relative density of cohesionless (coarse grained) soils or of the consistency of cohesive (fine-grained) soils. As the samples were obtained in the field, they were visually and manually classified. Representative portions of the samples were then sealed in clean glass soil jars and returned to the laboratory for further examination and verification of the field classification. The recovered soil samples were classified in accordance with the Unified Soil Classification System, ASTM D: 2488-84. A chart illustrating this classification method is included in the appendix to this report. Logs of the test borings indicating the depth and identification of the various strata, measured penetration resistances, soil classifications and the results of water level checks are included in the appendix to this report. A bag sample was obtained from each of the parking Iot borings from material Iocated just below the topsoil. A gradation test and plasticity index test were conducted on one of the samples. Since the two samples were nearly the same material, a second set of tests was not conducted and the sample containing the most fines was tested. SUBSURFACE CONDITIONS Boring 1 Boring 1 consisted of 12 inches of topsoil, underlaid by sand with sonic gravel and clay to at least 2 feet of depth, sandy organic silt/clay from at least 2.5 feet to at least 4 feet of depth, fine sand with clay from at least 5 feet to 7.5 feet of depth, clayey sand to 10 feet of depth, and sandy clay with gravel to 11.5 feet of depth. 2 should be noted that sufficient time may not have elapsed for equilibrium conditions to have been achieved in the open bore holes. Groundwater conditions may vary both seasonally and annually, based on precipitation amounts,patterns and both surface and subsurface drainage in the local area. • Included in the appendix to this report are logs of the test borings,which describe the conditions, encountered at each drilling location. The depth of the individual strata of soil may vary at and between the drilling locations due to unsampled intervals, the occurrence of transitions between soil layers and the natural variability of the subsurface conditions. CONCLUSIONS AND RECOMMENDATIONS Organic topsoil, peat, organic soils, and any soft soil layers, which may be encountered, should not be relied upon for support of the proposed commercial footings, slabs or controlled fills that will support these elements. These materials should be removed and replaced below the proposed structure. A qualified soil technician should examine the excavated areas before suitable fill material is placed. ITCO Allied Engineering can provide this service during construction. It should be possible to provide support for the planned structure with conventional spread footing foundation systems. If unsuitable soils are encountered, these can be corrected by using excavation and controlled refilling procedures together with an observational approach. This • would require excavation in order to prepare for the placement of controlled fill to make grade for concrete for footings or slabs. The non-root infested and inorganic on-site soils would generally be suitable for reuse as controlled and compacted fill material. The topsoil or other materials, which would not be suitable for use as controlled fill, may be able to be used as surface fill in the lawn and Iandscaping areas. Additional recommendations are presented in the following sections: I. EXCAVATION In general, grubbing and stripping operations should remove all significantly organic or root infested soils from the areas to be worked. Frozen material, soft consistency clays or otherwise unsuitable soil and debris should be removed. Where undocumented fill or otherwise unsuitable 4 2. FOUNDATIONS It should be possible to provide support for spread footing foundations systems using excavation and controlled filling procedures. As mentioned previously, the topsoil,peat, organic silt,organic clay, soft clay, and any uncontrolled fill encountered during the excavation work should not be relied upon for support of footings. slabs or controlled fills which will support these elements. It will be important to monitor the conditions exposed in the excavations during the grading work prior to the placement of fill to make grade for concrete for footings or slabs. I land auger borings and Dynamic Cone Penetrometer (DCP) tests should be done in the completed excavations and the exposed conditions judged suitable by an experienced soil engineer or technician prior to the placement of footings or fill. ITCO Allied Engineering Co. is capable of and available to do this work. • Once the recomm,lations presented in this report have been implemented, a net allowable bearing pressure f 250 pounds per square foot may be utilized for the proportioning of individual footings. esigning the footings, it is recommended that they be designed to exert R approximately equal pressures to the bearing strata. This should limit total and differential settlements to I" and %z" respectively. ■ For frost protection, we recommend that footings in unheated areas be placed at a depth of 48 inches below finished grade. For decks and porches it is recommended that this be increased to 60 inches if the soil is frost susceptible. In heated portions of the buildings where frost susceptible materials are absent, a depth of 42 inches would be adequate. Where full or partial basements are utilized, frost depths for garage areas and porch structures should be maintained as outlined above 3. FILL PLACEMENT In the event that unsuitable soils are encountered and need to be replaced, the fill material should • be mineral soil, preferably granular. and free of debris, boulders and organic material. The non- organic on-site soils would be suitable for reuse as controlled fill material provided that they are ■ dry enough to meet compaction requirements. It may be difficult to dry wet soils sufficiently and it may be necessary to replace some of this material with off site material. 6 5 aggregate(MnDOT 3138)would provide a G.E. that would exceed the required value. In using the soil factor method for pavement design, it is essential that the subgrade be constructed of uniform soil across the pavement section and compacted at a moisture content and to a density in accordance with MN/DOT spec. 2105 and be capable of passing test roiling, in accordance .with MN/DOT Spec. 2111. The completed subgrade should be observed and judged suitable by an experienced individual prior to the placement of the aggregate base or paving. Compaction of the upper 3 feet of the subgrade to a minimum of 100% of the standard proctor density within appropriate moisture limits, (65 to IO2% of optimum), should provide the necessary stability required for proof rolling. 5. FINAL SITE TOPOGRAPHY The final soil surfaces should be graded to provide adequate drainage away from structures and pavements in order to minimize deleterious effects associated with water infiltration. The areas adjacent to footing walls should be adequately compacted(not loosely placed)and provided with drainage outlets to avoid this zone acting as a "sump" and creating nuisance water conditions. Compliance with the building code provision for positive surface drainage away from the structure should also aid in reducing the quantity of infiltration into the backfill zones adjacent to foundation walls. STANDARD OF CARE The recommendations contained in this report are professional opinions. These opinions were arrived at in accordance with generally accepted engineering practices currently in use at this time, Iocation and for projects of this type. Other than this, no warranty is implied or intended. Soil samples recovered from the test borings will be retained in our offices for a period of thirty days from the date of this report. After that time they will be discarded unless prior written r instructions to the contrary are received. 8 s �, { it yr 9 5 I {x� i' b� • ALLIED TEST DRILLING COMPANY PROJECT: Honest 1 Auto Care Site NUMBER: 12034 Adj To 16677 Duluth Ave SE PAGE 1 OF 1 SURFACE ELEVATION LOG OF BORING T —' m% a ›- 8 103.54 SB#2 TEST I m ac - - - 2 z o(-) RESULTS PENETRATIONA z _3 - C.) DESCRIPTION AND I I AND 2 TEST DATA a °' a CLASSIFICATION I OTHER „ (blowslfoot) a "' OF MATERIALS (I REMARKS z 5 10 20 40 70 18"BROWN SANDY SILTY TOPSOIL 11 1 GRAS -' - ` .5 102 01 1 2.0- f I II. _ BROWN CLAYEY SAND.SC , 2 SS I 5 4.0 BROWN/GREY SANDY CLAY W/SOME - 6.0- 3 SS GRAVEL,CL I 11 8.0- 4 SS 1 12 / 5 SS / I 10 I 12.0_ 6 SS / 16 14.0--- - - 16.0- 7 SS / 567 GREY SANDY CLAY.CL 87 67 10 / 18.0- - - / 20.0 / 8 SS / 12 !.'1.5 62 Oii 22.0- • - _ _ WATER-LEVEL CHECKS 1 METHOD 4 SPT ^' DATE TIME ' SAMPLED TO I CASING 1 CAVE-IN WATER 08/23/2012 9:50 ' 21.5' I 20' 1 none! I I 1- 08/23/2012 V. * -LETEEy - - 08/23/2012 _ I1 T I - Craig CME•55 --- — I- I PROVED - - i ALLIED TEST DRILLING COMPANY PROJECT: Honest 1 Auto Care Site NUMBER: 12034 Adj To 16677 Duluth Ave SE PAGE 1 OF 1 SURFACE ELEVATION LOG OF BORING I I 1 l '� ? 102.84 SB#4 I TEST z a it; g s2 '1 RESULTS PENETRA ION U DESCRIPTION AND AND TEST DATA .e a o. 2 ccTRASTANDACC TION OTHER (blows/foot) N OF MATERIALS REMARKS I' 5 10 2+) 40 10 1 s .4 75 BROWN SANDY SILTY TOPSOILNO 102.04 2.0MR 11. : BROWN SAND W/CLAY&SOME GRAVEL,ss :f SW-SC , 154I\ 4.0 UP I EN BROWN SAND W/GRAVEL, SW II 5d3 3 SS ` 25 •` . .B5 . I 80 jig MOIST BROWN SANDY SILT. ML a SS 28 • 01, 10.0 : I , - s SS iiI ( 42 id 11.5 91.34 " 12.0 - BROWN SANDY CLAY,CL I 6 SS 20 m 14.0 ' 5 MOIST GREY SANDY CLAY, CL 87la "' 16.0 7 SS 10 I I II. 4 I 18.0 , I 4 20.0en Yi i 8 55 /�// I 11 • Po 22.0 WATER-LEVEL CHECKS METHOD DATE TIME [ SAMPLED TO CASING CAVE-IN WATER 1. MDT 08/23/2012 12:20 1 21.5' 2� none ... _ s !' TARTE08D 312012 COMPLEI 012 j •' DRILLER RIG I Craig CME-55 S �_ ! DRAW i BY APPROVED-- 1 I ALLIED TEST DRILLING COMPANY PROJECT: Honest 1 Auto Care Site NUMBER: 12034 Adj To 16677 Duluth Ave SE PAGE 1 OF 1 SURFACE ELEVATION LOG OF BORING w } CC SB#6 0 144.25 D r w TEST STANDARD z j o c RESULTS PENETRATION a "' a DESCRIPTION AND AND TEST DATA 5 i leci g CLASSIFICATION OTHER W (blows/foot) OF MATERIALS i REMARKS z 5 10 40 70 IL! 15"BROWN SANDY SILTY TOPSOIL I w I GRAB 1.25 1 / � BROWN CLAYEY SAND,SC 2.0 %02 El is - •17 DARK BROWN SEMI-ORGANIC SANDY toa 2 SS CLAY,CL 1° f 11 4.0 41 BROWN SANDY CLAY,CL 100.24' ma :66 BROWN SAND W/CLAY, SW-SC 99.95 6.0 3 Ss • BROWN SAND W/SOME GRAVEL,SW 10 p Y. 0 8"6 4 SS 24 ••3 95.2 I 4 • an 10.0 ' ./ BROWN CLAYEY SAND,SC 5 SS / 26 •211.5 92.7 ■e 12.1 i im 14.0 ■+ I 16.0 Pk 18.0- 0 20.0- Am 22.0 1 •I - WATER-LEVEL CHECKS I METHOD sm. DATE TIME SAMPLED TO CASING I CAVE-IN I WATER 1 �w ` 08124120/2, 9:50 11.5' 10' I none l t- ED _ I: 08/24/2012 asrzarrol2 _ I' Craig CME-55 • I. I I I r-r. rr. --•► a— - i ITCO ALLIED ENGINEERING CO. AN ALLIANCE OF INSTANT TESTING COMPANY AND ALLIED TEST DRILLING Jobsite and Laboratory Testing, Geotechnical Services, Commercial, Residential and Municipal 7125 West 126th Street, Suite#500 - Savage, MN 55378 ▪ Telephone: (952)890-7366 Fax: (952)890.5883 GRADATION TEST REPORT Date Sampled: 8-24-2012 Reported: 8-24-2012 • Sample By: ITCO Allied Eng. Performed By: Tom Warner Sampled from Boring#6 @ 18" Lab.No.2012-99 Sieve Size %Passing 31.5mm=1 114" 100 • 25.0mm=1" 98.9 19.0mm=314" 98.4 • 12.5mm=1/2" 97.0 9.5mm=318" 95.2 4.75mm=#4 90.6 2.00mm=#10 83.5 850pm=#20 73.7 425pm=#40 62.8 180im=#80 40.1 75pm=#200 28.4 Liquid Limit 25 • Plastic Limit 20 Plasticity Index 5 t PASHTO Soil Classification A-2-4 Remarks: Copies To: Charge Codes: Fine Gradation #103- 1 Liquid and Plastic Limits#308 - 1 Signed: Gordon.).Kopacck,Professional Engineer—Registration No. 7254 ALLIbll IiS-r DRILLING COMPANY SOIL CLASSIFICATIONS SYSTEMS • Unified Soil Classification ASTM: b 2488 - 84 • Group • Major Divisions Symbol Typical Group Names ' COARSE- GRAVELS Clean Gravels OW Well graded gravels. Well graded gravel with sand'. GRAINED SOILS <5% passing More than 50% No. 200 sieve . GP Poorly-graded gravel. Poorly graded gravel with sand'. More than 50% of coarse retained on the fraction retained Gravel wI fines GM Silty gravel.Silty gravel with sand'. No. 200 sieve. on Na. 4 sieve, >15% passing No. 200 sieve GC Clayey gravel. Clayey gravel with sand'. SANDS ' Clean Sands _ SW Well graded sand,Well graded sand with gravel'. <5% using ' 50% or more of No. 200 sieve SP Poorly graded sand. Poorly graded sand with gravel. coarse fraction passes No. 4 Sands with tines SM Silty sand. Silty sand with gravel-. sieve. >.15 % passing No. 20 sieve SC Clayey sand, Clayey sand with gravel`. • •▪ FINE-GRAINED SILTS AND CLAYS Mi.. Silt. Silt with sand'. Sandy silt". SOILS �___.�. Liquid Limit less than 50. CL Lean clay. Lean clay with sand'. Sandy lean clays" • ; Cohesive soils 1 OL Organic silt. Organic clay i ---.1 50% or more SILTS AND CLAYS I NisiElastic silt. Elastic silt with sand'. Sandy elastic silt". No.passes the o. 4 a 200 sieve. 1; Liquid Limit more than 50 CH Pat clay. Fat clay with sandal. Sandy at clay" 1 OH Organic clay, Organic silt_ ' .1 • • HIGHLY ORGANIC SOILS PT Peat. I Boundary.lassitications ire designated h►• dual group symbols. For example(SP-SC). Poorly graded sand with :lay. - - More 'hon.15% sand. -- - More than :5% sand. 1 I 1 - 15% to 30% retained cn No 200 Sieve. 00 - More than 30% retained on No 200 sieve L • • • AASHTO Soil Classification System • .Granular Materials Silt-Clay Materials (35% or less passing No. 200 sieve) ( >.35%c passing No 200) • A-i A-3 A-2 A-4 A-5 A-6 A-7 A-8 A-I-a A-I-b A-2-4 A-2-5 A-2-6 A-2-7 lave Analysis: • 96 Passing No. Io 50 max No.40 30 max 50 Max Si min No.200 15 max 2.5 max 10 max 35max 35max 35max 35max 36min 36min 36min 36min t - - • haracteriades of ruction Passing No 40: liquid limit 40max 41min 40max 41 max 40max 41min 40max 4tmax plasticir/index 6 max NP I Omax 1 Omax t 1 min 1 l min 1 Omax l Omax l l min1 t 1 min �� sual Types of stone fragments fine -, peat'hillWY ignif'scant Constituents 1 gavel and sand sand silty or clayey gravel and sand _ silty soils clayey soils organic was 1 a eneral Subgrade • ling excellent to good fair to poor ..-..unsatisfactory -