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HomeMy WebLinkAbout35-96.19r, EARTHWORK 1. SCOPE OF WORK A. Extent: The work required under this section consists of all excavating, filling, rough grading and related items necessary to complete the work indicated on the drawings and described in the specifications. 1. In general the items of work to be performed under this section shall include clearing and grubbing, removal a of trees an d stumps (where required), ), protection of trees to remain, stripping and storage of topsoil, fill compaction and rough grading of entire site as indicated on the drawings. 2. Excavated material that is suitable may be used for fills. All unsuitable material and all surplus excavated material not required shall be removed from the site. The location of dump and length of haul shall be the Contractor's responsibility. 3. Provide and place any additional fill material from off the site as may be necessary to produce the grades required. Fill obtained from off site shall be of kind and quality as specified for fills and the source approved by the Owner. 4. The Contractor shall accept the site as he finds it and shall remove all trash, rubbish and debris from the site prior to starting excavation. B. Work not included: The following items of related work are specified and included in other sections of these specifications. 1. Excavation, grading and backfilling for utility lines. 2. Storm drainage systems. 3. Sanitary sewer systems. 4. Water supply systems. 5. Streets and paving. 2. BENCHMARKS Maintain carefully all bench marks, monuments and other reference i e ce po nts. If disturbed or destroyed replace as directed b y engineer. en in r . 3. REMOVAL OF TREES A. Remove all trees and stumps from area to be occupied by road and surfaced areas. Removal of trees outside these areas shall only be done as noted on drawings or approved by the Owner. B. All brush, stumps, wood and other refuse from the trees shall be removed from site or burned with proper permits (where applicable). 4. PROTECTION OF TREES A. General Protection: the Contractor shall be responsible for the protection of tops, trunks and roots of existing trees on the project site that are to remain. Existing trees subject to construction damage shall be boxed, fenced or otherwise protected before any work is started; do not stockpile within branch spread. Remove interfering branches without injury to trunks and cover scors with tree paint. 5. STRIPPING OF TOPSOIL A. Remove topsoil to a depth of 6 inches (or more if required) from the areas to be occupied by roads, walks, buildings, and parking areas. Pile and store topsoil at a location where it will not interfere with construction operations. Top soil shall be reasonably free from subsoil, debris and stones. 6. DISPOSITION OF UTILITIES A. Rules and regulations governing the respective utilities shall be observed in executing all work under this section. B. It Shall be the responsibility of each contractor to verify all existing utilities and conditions pertaining to his phase of the work. It shall also be the contractors responsibility to contact the owners of the various utilities before work is started. The contractor shall notify in writing the owners or the engineers of any changes, errors or omissions found on these plans or in the field before ,, . k is started or resumes. C. Where active utilities are encountered but not shown on the drawings, the Engineer shall be advised before work is continued. D. Inactive and abandoned utilities encountered in excavating and grading operations shall be reported to the Engineer. They shall be removed, plugged or capped as directed by the Owner. 7. SITE GRADING A. Grades: Do all cutting, filling, compacting of fills and rough grading required to bring entire project area to subgrade as shown on the drawings. Undercut open areas 4" for topsoil. B. Rough grading: the tolerance for paved areas shall not exceed 0.10 feet above established subgrade. all other areas shall not exceed 0.10 feet plus or minus the established grade. Provide roundings at top and bottom of banks and other breaks in grade. All open areas shall be graded a minimum of 0.5% and a maximum of 3:1 slope. On fill slopes steeper than 4:1, step or break -up sloped surfaces so that fill will bond with existing surface. C. Subgrade shall be proofrolled with suitable equipment and all spongy and otherwise unsuitable material shall be removed and replaced with suitable material. D. Subgrade for streets and paved areas shall be compacted to 95% of modified proctor. E. See PROJECT MANUAL and SOILS REPORT for requirements regarding undercutting and subgrade preparation for pavement. F. All fill material shall be formed from soil free of deleterious material. Prior to placement of fill, a sample of the proposed material shall be submitted to the soils engineer for approval. Ths fill material shall be placed in layers not to exceed 8" in loose thickness and shall be spread and compacted at the proper moisture content. G. All fill material in areas outside of building and pavement areas shall be compacted lightly with each lift and protected from erosion. Areas of building construction shall have suitable fill material placed and compacted in accordance with the Soils Engineer's report (minimum 95% modified proctor). 8. SEEDING PREPARATION A. Solve any surface or subsurface drainage problems and construct permanent erosion control structures. B. Remove all rocks, roots or other materials that may interfere with seedbed preparation. C. Perform the major filing, shaping and smoothing of gullied or severely eroded areas. D. Have soil tested to check pH and fertility levels. Apply lime at rate specified in seeding specifications. E. Work all lime and fertilizer into the soil to a depth of 2 -3 inches with a small disk, harrow or rake operated across the slope as much as possible. F. Firm the soil bed where possible. Do not over pack the soil because too much compacting can restrict water and root penetration into the soil. TYPICAL SANITARY SEWER SPECIFICATIONS WITHIN CLAY TOWNSHIP REGIONAL WASTE DISTRICT: ___r V, 1. Standard specifications of the Clay Waste District and Indiana Dept. of Transportation shall apply for all work and materials. Pipe shall be installed in accordance with Section 715. 2. Sanitary sewer pipe shall be PVC in accordance with ASTM D- 3034 -89 (S.D.R. 35) and ASTM 2321. PVC pipe shall have grooved bell and gasket. The pipe shall be made of PVC plastic having a cell classification of 124548. 3. PVC sewer fittings shall conform to the requirements of ASTM d- 3032 -89 specification. Fittings in sizes through 8" shall be molded in one piece with elostomeric joints and minimum socket depths as specified in sections 6.2 and 7.3.2. Fittings 10" and larger shall be molded or fabricated in accordance with section 7.11 with manufacturers standard pipe bells and gaskets. Wall thickness of fittings shall be SDR 26 as defined in i 9 section 7.4.1 of the specifications. Gaskets for elostomeric joints shall be molded with a minimum cross - sectional area of 0.20 square inches and conform to ASTM F -477 specification. Fittings shall be manufactured by Harco or equal. 4. All sanitary manholes shall be "precast concrete manholes in accordance with ASTM C -478 and Section 720. 0 -Rings shall conform to C -443. Kent Seal or equivalent shall also be applied to ail joints and between riser rings and castings. Manhole step spacing shall be no more than 16- inches. 5. Butyl rubber coating shall be applied aroun d each manhole joint from 6-inches above to 6- inches below each joint. The appropriate primer shall be applied prior to applying the rubber coating. Inside joints to be filled with precaat plug material. 6. The casting elevations are set by plan. However, the castings are to be adjusted in the field by the Engineer's representative, should a discrepancy occur between plan grade and existing grade. New manhole ring and cover shall be installed to establish grade. Maximum height of adjusting rings shall be 12- inches. 7. If storm /sanitary pipe is to be under pavement or at its nearest point is within 5 ft. or less of pavement, sidewalks, curbs, gutters or similar structures, the entire trench shall be backfilled with material in accordance with 211.01 of the 1988 Indiana Department of Highway Standard Specs. 8. The Contractor shall be responsible for verifying that all state highways, city and county permits have been obtained by the developer prior to start of construction. 9. The Contractor shall be required to furnish the developer's Engineer with a set of prints, marked in red pencil, showing actual sewer location and invert, to include lateral location, depth and length. Such "as- built" prints must be received by the Engineer before the final contract payment can be authorized. The sanitary sewer laterals and stubs termination shall be indicated on the surface with a 10' 2x4 pointed orange set immediately above said termination point, with lateral depth written on 2x4. 10. All sanitary sewer lines upon completion will be required to pass an infiltration weir test and a low pressure air test, unless otherwise directed by the Engineer. Said test shall be conducted according to NCPI Standard Method, and shall be witnessed by an Engineer and a representative of the Cloy Waste District. 11. Deflection tests shall be performed on all flexible* pipe after the final backfill has been in -place at least 30 days. No pipe shall exceed a vertical deflection of 5 percent deflection test results. (*The following are considered non - flexible pipes: concrete pipe, ductile iron pipe and cast iron pipe.) The deflection test shall be performed with a nine -point mandrel. Proving rings shall be available. 12. All mandrel testing shall be observed by a Professional Engineer for certification and a representative of the Clay Waste District. 13. The ends of laterals are to be plugged tight with a braced plastic disc or cap capable of withstanding a low pressure air test without leakage. 14. Bedding for g o flexible pipe shall be No. 8 crushed stone from 6- inches below the pipe to 12- inches above the pipe. Bedding for rigid pipe shall be No. 8 crushed stone from 6- inches below the pipe to the spring line of the pipe and from this point to 12 inches above shall be fill sand or equivalent. Manholes shall be placed on no less than 6- inches of No. 8 crushed stone bedding. 15. Water and sewer line crossings and separations shall be in accordance with Ten States' Standards. 16. Trench shall b e opened ed sufficientl Y ahead of pipe laying n 9 to reveal obstructions and shall be properly protected an d/ or barricaded when left unattended. 17. No water shall be permitted to flow into the sanitary sewer system during construction. Contractor shall utilize a pump to keep the water level below the pipe. Pump discharge shall be directed to a storm outlet. Any pipe entering existing sewers shall be plugged, until such time as all tests on the sewers have been completed and the lines have passed all punch lists. 18. All sewer laterals installed by the mainline Contractor shall be bedded the some as the main line sewer. 19. Forty -eight (48) hours notice shall be given to the Clay Waste District prior to the start of sewer construction. Also, 48 -hours notice shall be given prior to any testing done on the sewer. 20. Manhole castings shall be stamped "SANITARY SEWER" (Neenah Costing R 1642 or equal) and be self - sealing type. Waterproof castings shall be Neenah R- 1916 -F1 and stamps "Sanitary Sewer'. 21. The minimum slope for sewer occeptonce by the Clay Township Regional Waste District are: Size of pipe Minimum Constructed Slope 8 -inch 0.40% 10 -inch 0,28% 12 -inch 0.22% 15 -inch 0.15% 18 -inch 0.12% 22. The Contractor shall provide measurements of the slope of the sewer for each manhole section as construction progresses. Such measurements shall be certified by a Registered Land Surveyor or Engineer and be available on -site for observation by the District's Inspector. No more than three manhole sections con be constructed in advance of such measurements. i 23. In the event the Contractor does not meet the minimum slopes, the sewer section and any other affected sewer sections shall be reconstructed to meet such minimum slopes. 24. No roof drains, footing drains and /or surface water drains may be connected to the sanitary sewer system, including temporary connections during construction. 25. Sewers crossing mains shall be laid to provide minimum distance of 18 inches between the outside of the water main and the outside of the sewer. This shall be the case where the water main is either above of below the sewer. The crossing shall be arranged so that the sewer joints will be equidistant and as for as possible from the water main joints. Where a water main crosses under a sewer, adequate structural support shall be provided for the sewer prevent damage to the water main. When it is impossible to obtain proper horizontal and vertical separation as stipulated above, the sewer shall be designed and constructed equal to water pipe and shall be pressured tested to assure watertightness prior to backfilling. STORM SEWER SYSTEMS 1. SCOPE OF WORK The work under this section includes all storm sewers, storm water inlets, and related items, including excavating and backfilling, necessary to complete the work shown on the drawings. 2. MATERIALS A. Storm Sewers: 1. Reinforced concrete sewer pipe shall conform to ASTM C -76 latest revision with joints conforming to ASTM C -443 latest revision. B. Manholes: 1. Precast reinforced concrete manhole sections and steps shall conform to ASTM C -478 latest revision. 2. Castings shall s s o be of uniform unlit free from blow g quality, o b o holes, porosity, hard spots, shrinkage distortion or other defects. They shall be smooth and well - cleaned by shotblosting or by some other approved method. They shall be coated with asphalt paint which shall result in a smooth coating. Tough and tenacious when cold, not tacky or brittle. They shall be gray iron meeting ASTM A -48 latest revision. 3. Joints manhole sections shall be jointed with rubber type gaskets. The rubber type gaskets shall I ASTM C -443 latest revision. C. Subdroins: 1. Perforated plastic pipe subdrains shall conform to ASTM D3034 SDR 35 or ASTM D2729. 3. APPLICATION A. Permits and Codes: the intent of this section of the specifications is that the contractor's bid on the work covered herein shall be based upon the drawings and specifications but that the work shall comply with all, applicable codes and regulations as amended b an waivers. h 1 s of furnish Y Y all bonds necessary to get permits for cuts and connections to existing sewers. B. Local Standards: The term "Local Standards" as used herein means the standards of design and construction of the respective municipal department or utility company. C. Existing improvements: Maintain in operating condition all active utilities, sewers and other d drains encountered in the sewer installation. Repair to the satisfaction of the owner any damage to existing active improvements. D. Workmanship: To conform to all local state and notional codes and to be approved by all local and state agencies having jurisdiction. E. Trenching: lay all pipe in open trenches, except when the local authority gives written permission for tunneling. Open the trench sufficiently ahead of pipe- laying to reveal any obstructions. The width of the trench shall be the inside pipe diameter plus 24 inches for 12 inches above the pipe. Sheet and brace trench as necessary to protect workers and adjacent structures. All trenching to comply with Occupational Safety and Health Administration Standards. Keep trenches free from water while construction is in progress. Under no circumstances lay pipe or appurtenances in standing water. Conduct the discharge from trench dewatering to drains or natural drainage channels. F. Special Supports: Whenever, in the opinion of the Engineer, the soil at or below the pipe grade is unsuitable for supporting sewers and appurtenances specified in this section, such special support, in addition to those shown or specified, shall be provided as the Engineer may direct, and the contract will be adjusted. G. Backfilling: For depth of at least 12 inches above the top of the pipe, bockfill with earth or granular material free from large stones, rock fragments, foots or sod. Tamp this backfill thoroughly taking care not to disturb the pipe. For the remaining trench depth, backfill with earth or granular material containing stones or rocks not larger than 4 inches. Backfill under walks, parking areas, driveways and street shall be granular material only - thoroughly compacted by approved methods. Trenches parallel to an within 5 feet of paved roadways shall be constructed the same. H. Manhole Inverts: Construct manhole flow channels of concrete pipe or brick, smoothly finished and of , semi - circular section conforming to the inside diameter of the connecting sewers. Make changes in size or grade gradually and changes in direction by true curves. Provide such channels for oil connecting sewers at each manhole. I. Subdroins: All Subdroins shall be of the size as shown and shall be placed as shown on the plans. They shall be constructed to the grades shown. J. Utilities: It shall be the responsibility of each contractor to verify all existing utilities and conditions pertaining to his phase of the work. It shall also, be the contractors responsibility to contact the owners of the various utilities before work is started. The contractor shall notify in writing the owners or the engineer of any changes. errors or omissions found on these plans or in the field before work is started or resumed. PAVING 1. SCOPE OF WORK The work required under this section includes all concrete and bituminous paving and related items necessary to complete the work indicated on drawings and described in the specifications, including but not limited to: All streets, drives, parking areas in contract limits Curbs and 9 utters Concrete I sobs 2. MATERIALS A. Concrete: Concrete shall be ready -mixed and shall be a mix of proportioned fine and coarse aggregates with Portland cement n water. Minimum a d ate u cement content shall be 6 bogs per cubic yard of concrete and maximum water content shall be 5.5 U.S. gallons per sack of cement• including moisture in the aggregate. Slump for normal weight concrete shall be a maximum of 4 inches n c es d o minimum a n um of 2 inches. The slump of machine placed concrete shall be no less than 1 -1 /4 inches nor more than 3 inches. Standard test ASTM C -143 shall be used to measure slump. Compressive strength of conrete at 28 days shall be 4 i. exterior concrete shall have 000 psi. All e to or co air entrainment of 4.5% to 7.5% by volume per ASTM C -260. Retempering of delivered concrete will not be allowed. Concrete shall be composed of: 1. Portland cement: conforming to ASTM C-150, Type I. 2. Aggregates: conforming to ASTM C -33. 3. Water: Shall be clear and free from injurious amounts of oils, acids, alkalies organic materials or other deleterious substances. B: Welded Steel Wire Fabric: Where required for concrete reinforcement shall conform to ASTM A185. C: Premoulded Joint Filler: Shall be non- extruding type meeting ASTM D -544, except that premoulded joint filler used in concrete walk construction may be either non - extruding or resilient. D. Bituminous Pavement Materials: All m oteriols ro e d os P P for the construction of bituminous pavements shall comply with the Indiana Department of Transportation Specifications, per latest revisions. E. Compacted Aggregate Bose: crushed stone or grovel conforming to INDOT 903.02. Crushed gravel shall be a minimum of 35% crushed material. Fines shall be limited to a maximum of 8% of the total. Material shall be free from on excess of flat, clongoted, thinly laminated soft or disintergrated pieces, and shall be free from fragments coated with dirt. Compacted aggregate shall be graded as follows: SIEVE SIZE % PASSING 1 -1 2" 100 1" 80 -100 3 -4" 70 -90 1/2" 55 -80 #4 35 -60 #8 25 -50 $30 12 -30 200 5 -10 3. APPLICATION A. Grading: Do any necessary grading in addition to that performed in accordance with Earthwork Section, to bring subgrades, after final compaction, to the required grades and sections for site improvement. B. Preparation of Subgrade: Remove spongy and otherwise unsuitable material and replace with stable material. No traffic will be allowed on prepared subgrade prior to paving. C. Compaction of Subgrade: The first 6 inches below the subgrade shall be compacted to at least 100% of the maximum dry density as determined by the provisions of AASHTO T -99. Water shall be prevented from standing on the compacted subgrade. D. Utility Structures: Check for correct elevation of all manhole covers, valve boxes and similar structures located within areas to be paved and mark, or have made any necessary adjustments in such structures. E. Placing Concrete: f 1. Subgrade: Place concrete only on a moist, compacted subgrade of base free from loose material. Place no concrete on a muddy or frozen subgrade. 2. Forms: All forms shall be free from warp, tight enough to prevent leakage and substantial enough to maintain their shape and position without springing or settling, when concrete is placed. Forms shall be clean and smooth immediately before connecting. 3. Placing Concrete: Concrete shall be deposited so as to require as little placing as practicable. When I oncrete is to be placed at an atmospheric temperature of 35 degrees F, or less, paragraph 702.10 of the Indiana Department of Highways Specifications, latest revision shall be followed. F. Concrete Curb and Gutter: 1. Expansion Joints: Shall be 1/2 inch thick premoulded at ends of oil returns and a maximum spacing of 80 feet. 2. Contraction Joints: Unless otherwise provided, contraction joints shall be spaced joints spaced 10 feet on center. 3. Finish: Tamp and screed concrete as soon as placed, and fill any honeycombed places. Finish square corners to 1/4 inch radius and other corners to radii shown. G. Concrete Walks and Exterior Steps 1. Slopes: Provide 1/4 inch per foot cross slope. Make adjustments in slopes at walk intersections ,as necessary to provide proper drainage. 2. Dimensions: Walks and steps shall be one course construction and of widths and details shown on the drawings. 3. Finish: Screed concrete and trowel with a steel trowel to a hard dense surface after surface water has disappeared. Apply medium broom finish and scribe control joints at 6 foot spacing. Provide 1/2" expansion joints where sidewalks intersect, and at a maximum spacing of 48 feet between expansion joints. H. Curing Concrete: Except as otherwise specified, cure all concrete by one of the methods described in Section 501.17 of the Indiana Department of Transportation Specifications, latest revision. I. Bituminous Pavement: Hot asphalt concrete pavement shall be as specified in Section 403 of the Indiana Department of Transporation Specifications, latest revisions. Paving will not be permitted during unfavorable weather or when the temperature is 40 degrees F. and falling. J. Compacted Aggregate Base: The thickness shown on the drawings is the minimum thickness of the fully compacted sub -bose: Compaction shall be accomplished by rolling with a smooth wheeled roller weighing 8 to 10 tons. Compact to 95% compaction using modified Proctor procedures. Along curbs, headers and walls and at all places not accessible to the roller, the aggregate material shall be tamped with mechanical tampers or with approved tampers. WATER MAINS 1. SCOPE OF WORK A. The work required under this section includes all cold water distribution lines, valves, meter pits, hydrants, and related items including excavating and backfilling necessary to complete the work shown on the drawings. The end of water service lines shall be tightly plugged or capped at the terminal points pending the connecting to all s uch tin es o f the building piping os specified in the plumbing specifications and architectural drawings. 2. MATERIALS A. Ductile Iron Pipe: Ductile iron pipe shall meet AWWA C -150 and C -151 Specifications. Pipe to be cement lined per AWWA C -104. B. Copper Pipe: Shall be ASTM B -88 copper pipe with I r so de faint fittings. Solder shall be of o composition recommended by the manufacturer of the fittings. C. Fire Hydrants: Shall comply with AWWA Specification C -502 and shall meet local standards and requirements, particularly as to nozzle diameters and threads, direction of opening and dimensions of operating and cap nuts Fire Hydrants shall have one pumper and two hose nozzles. A valve opening not less than 5 inches and a 6 inch inlet connection. The length of the hydrant barrel shall be determined by the specified depth of cover over the pipe. D. Valves: All valves and stops shall have ends suited or adapters shall be provided for the proper installation in the lines in which they are located. Valves shall meet local standards or in the absence of such standards, the following requirements. 1. Valves in cot iron i s o pipe shall be iron body, bronze mounted, disc gate valves conforming to AWWA Specification C -500. They shall open in the some direction as those used in the local waterworks system. Valve stems shall terminate in 2 inch wrench nuts. Furnish two (2) keys. 2. Valves in copper pipe shall be standard brass body, round -way, ground -key stops, with T heads. Furnish two (2) keys. E. Valve Boxes: Shall meet local standards or in the absence of such, shall comply with the following requirements: 1. For iron body valves, boxes shall be approved standard buffalo -type cost iron, adjustable shaft boxes, having a minimum shaft diameter of 5-1/4 inches. 2. For brass body valves (stops) boxes shall be approved standard cost iron extension service boxes, having a minimum diameter of 2 -1/2 inches and having lid held in place by a br,i!� r bronze bolt. The castings shall be coated w,t;. ,h its of cool -tar pitch varnish. Furnish two (2) keys for bolt in lids. F. Tops: 3/4" tops in lines smaller than 4 inches shall be only by topped tee or topping saddle. Water service lines shall be marked on curbs with blue paint. (Sewer lateral locations - red). 3. APPLICATION A. Permits and Codes: The intent of this section of the specifications is that the contractor's bid on the work covered herein shall be based upon the drawings and specifications but that the work shall comply with all applicable codes and regulations. Contractor shall furnish all necessary bonds to get permits for cuts and connections. B. Existing Improvements: Maintain in operating condition all active utilities and sewers and other pipe system that may be encountered. C. Trenching. Lay all pipe in open trenches• except when local authority gives written permission for tunneling. Provide separate trench for the water line at least 10 feet horizontclly from any sanitary sewer. In locations where separate trenches for sewer and water lines are impracticable, lay the water pipe on a solid shelf at least 18 inches above the top of the sewer. D. Width of Trench: Excavate trenches 12 inches each side of the pipe for proper installation of pipe. E. Sheeting and bracing: Sheet and brace trenches as necessary to protect workers and adjacent structures. All trenching shall comply with the Occupational Safety and Health Administration Standards. F. Water Removal: Keep trenches free from water While construction therein is in progress. Under no circumstances lay pipe or appurtenances in standing water. Conduct the discharge from trench dewatering to drains, or natural drainage channels. G. Grading Trench Bottoms: The bottom quadrant of the pipe shall be fully and uniformly supported. The full load shall rest on the barrel of the pipe. The trench may be excavated to a depth of 4 inches or more below final grade with sand, crushed stone or grovel backfill to bring it back to pipe laying grade. For a depth of at least 12 inches above the top of the pipe bocki'M with earth or granular material free from large stones, roots or frozen clogs. Tamp this backfill thoroughly taking care not to disturb the pipe. Backfill under walks, parking areas driveways and streets with granular material only and tomp thoroughly, by approved methods. Trenches parallel to an within 5 feet of paved roadways shall be constructed the some. H. Tests: Before joints are covered, fill the piping with water, opening hydrants or other outlets to expel air. Test the piping for leakage for a period of at least two hours at a pressure of 100 pounds per square inch. Inspect all joints for leakage and remedy any leaks. Upon completion of the water distribution main s, flush out the system until the water runs clear. As soon as the system has been flushed out, it shall be sterilized in c r n i a co da ce with the requirements f s o the I ocal Water Company. I. Shop Drawings: Submit Shop Drawings of hydrants and valves to the local water company for approval. J. If a horizontal distance of 10 feet cannot be maintained between the water line and the sanitary sewer line, the sewer must be constructed of water works grade ductile iron pipe with mechanical joints within 10' of the water line. K. tiliti . I U es• t shall be the responsibility of each contractor to verify all existing utilities and conditions pertaining to his phase of the work. It shall also be the contractor's responsibility to contact the owners of the various utilities before work is started. The contractor shall notify in writing the owners or the engineer of any changes, errors or omissions found on these plans or in the field before work is started or resumed. L. New Water Main construction: Contractor to record dimension of each water stub and valves from nearest fire hydrant measured along water main. The locations of hydrants and water valves, along with any other construction changes are to be incorporated on the original construction drawings and "Record Drawing" prints submitted to the local water company and engineer as soon after completion of construction as possible. E�OSION CONTROL A. Contractor shall at all times insure that erosion control measures protecting existing drainage facilities be in p lace prior to the commencement of any phase of construction or land alteration activity. B. As soon as areas are brought to finish grade or new drainage facilities are constructed, contractor shall construct the applicable erosion control measures required by and delineated on the approved plan. C. During site construction activity, the contractor shall: 1. Construct ail perimeter silt barriers. 2. Install and maintain clean crushed stone at all construction entrances /exits to the site and any areas used for parking. 3. Prevent construction silts from leaving the site at all times and place excovted materials away from any direct drainage flow runoff from the site. D. Temporary vegetation shall be installed within 7 days following completion of any phase of grading. E. Contractor shall inspect all erosion control measures daily and repair as necessary to prevent erosion. Siltation shall be removed from areas where failures have occured and corrective action shall be taken within 24 hours to maintain all erosion control. F. Perimeter siltation barriers shall be maintained at of times. G. At such time that rough grading of the site is complete and drainage diverts to inlets, inlet erosion control measures shall be installed at all inlet structures to keep piping systems free of siltation.. H. Erosion control measures, construction entrances and siltation barriers shall remain in place until a good stand of grass has been obtained and /or paving operations are complete. After complete vegetative establishment or paving, all silt in pipes, detention facilities and swales shall be removed within 10 days so that finished grades are met. f ```\`�► ► ►►N lHt W /'/ /,, P�A.......''F/ ,'' `�. P &GISTER�o. F _ * No. • D 8827 • = /�0 STATE p <C/��� i�CAS,�'•.!�OIANP..•'�N \`� 1. `i/,/ONIAL ►f � \`�� ,/���_�--,-,w-�;�z ALLAN H. WEIHE -RE6 P.E -lN J/8827 rn .a w ..j a: :,.; O E, W °4) z ■ W AA 1111;H ..jam pl: W .a ix f A �. V] W W 2u 1111111111111111111 11. x s I 1111111% to W W W Z 0 Z W W �00 Wz > 0 CQ d m It r4 U P i Uz~ X V ix I O °I3. `t F5 i z4Go in ' 0 t` 0 A Z C') U) rz W Z 11 E I rn C4 O > a: A .I C7 rn X W W Z 3 Z W U , N 0 3 U-) a) N 0 M V) Z a) 6 U) o- J M N L a qi�N L0 I U Wa) A 0 01 5. a A A z Z ... 22 a ma a o o ] atz Z 0 U V) at wN (Ao Q� U w, V) w 0 Cn in J h O V i O . L Q4 �O Q5 J O O V W O r.. �I V 65 yw Q4 w i�U q, w Z QQ d' ',J V Wy � hCA SHEET NO. f 7 1 OF 18