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R-81-396 - 7/9/1981c9 TErco 7- -11 SEWER LINE TRENCH SETTLEMENT INVESTIGATION OAK RIDGE DRIVE ROUND ROCK, TEXAS TRINITY ENGINEERING TESTING CORPORATION 3EQ1 MANOR ROAD • AUSTIN, TEXAS AL. T ETC❑ TRINITY ENGINEERING TESTING CORPORATION REPORT OF OBSERVATIONS MADE DURING EXCAVATION OF TEST PITS ALONG THE EXISTING SEWER LINE ON OAK RIDGE DRIVE IN ROUND ROCK, TEXAS FOR THE CITY OF ROUND ROCK. July, 1981 GEOTECHNICAL ENGINEERING DIVISION INTRODUCTION TRINITY ENGINEERING TESTING CORPORATION SEWER LINE TRENCH SETTLEMENT INVESTIGATION This investigation into the possible cause of settlements along Oak Ridge Drive in the area generally south and west of the Ninth Grade Center was authorized by the City of Round Rock in the latter part of May, 1981. Oak Ridge Drive was constructed about 4 years ago. An 8- inch diameter sewer line runs along the south side of the street at a depth of about 12 feet or so. The visual appearance of the pavement is good with the exception of quite noticable settlements along the sewer line route. It is my understanding that the settlements have gradually worsened through the years but have recently become a haz- ard to vehicular traffic. The purpose of the investigations described herein was to examine the sewer trench backfill to ascertain what has caused the settlements. TEST PIT EXCAVATION NO. 1 OAK RIDGE DRIVE, ROUND ROCK, TEXAS This first excavation was made on June 3, 1981 at a manhole located about 120 feet west of the most westerly entrance to the Ninth Grade Center. The depression appeared to be about 2 to 3 inches down from the surrounding pavement. The hot mix was removed and found to be from 1.25 to 1.5 inches in thickness. The underlying base material was 1 G!OTECHNICAL ENGINEERING DIVISION TRINITY ENGINEERING TESTING CORPORATION examined by field density tests and the excavation continued. The base material continued to a total depth of 23 inches as measured from the top of the pavement. The base material consisted of a fine crushed limestone product described locally as "screenings ", "scalping ", or "crusher fines ". The results of the field density tests are summarized on Plate I and the results of the ASTM D698 moisture - density curve are shown on Plate II. These results indicate that the screenings are ade- quately compacted in the upper areas but with an indication of lower densities with depth. Just after the hot mix was removed from the area surrounding the man- hole, it was noted that an opening was present on the west side of the manhole in the area where the largest depression had been evident. It appeared that the opening had been created as the backfill settled and pulled away from the manhole. At a depth of 23 inches, the backfill material changed into a mixture of limestone fines and boulders. The boulders varied in size from small (4 to 8 inches) to large (over 18 inches). At a depth of 32 inches an opening was encountered. Upon investigation the opening, which was approximately 2 to 3 inches wide, extended back and downward towards the manhole. The excavation continued to a depth of . 8 feet at which point the test pit was terminated. The backfill materials were not overly saturated and in fact felt to be at optimum or just above. Several large boulders were removed but the backfill material was mostly smaller 2 GEOTECNNICAL ENGINEERING DIVISION TRINITY ENGINEERING TESTING CORPORATION boulders intermixed with the crusher fines. The materials tended to readily slough into the hole during the excavation process indicating low shear strength and lack of cohesion. TEST PIT EXCAVATION NO. 2 Test Pit No. 2 was started on June 3, 1981 but delayed by rain follow- ing removal of the hot mix surface. Field density tests nos. 5 and 6 were taken prior to the rainfall and the area filled with base material until a later date when the excavation could be continued. On June 30, 1981 the excavation was resumed. This second location was in an area of severely depressed pavement extending over a length of approximately 120 feet and starting at a point about 120 feet west of the first excavation at the manhole. Field measurements indicated settlements on the order of 3.5 to 4.5 inches over a large portion of this area. The depressed area began near the center line and extended over the south half of the street to a point generally 8 feet from the curb. At one location the depression extended over to the curb and gutter such that the hot mix had dropped about 0.5 inch from the gutter. The width of the depression averaged from 4 to 10 feet over this 120 foot section. The actual backhoe excavation was made in one of the worst depressions in the center of the larger area just described. The hot mix surface measured 1.5 to 2.0 inches and was underlain by 18 inches of crushed GEOTECHNICAL ENGINEERING DIVISION TRINITY ENGINEERING TESTING CORPORATION limestone screenings serving as the base material. The screenings upon visual examination were noted to be near optimum for compaction. Below the screenings, the rock boulder and screening mixture was encountered and continued over the remainder of the excavation. As in the other excavation the boulders were normally small with scattered larger boul- ders interbedded. As the excavation proceeded the sides remained fair- ly stable to a depth of about 4 feet but then began to slough severely such that advancement of the hole was slowed by removal of the fall -in. At a depth of about 3.5 feet prior to the excavation beginning to cave, a void was located in the side just below a rock of 8 inch length. The void was small perhaps only 0.5 inch wide but was felt to be represent- ative of other voids which could not be observed due to the backhoe type excavation. The excavated material remained fairly dry in appearance down to 4 feet then became moist but not wet down to about 10 feet where more moisture was noted. Just below 10 feet, seepage water was encountered andwas flowing into the excavation from all directions. In further efforts to extend the excavation, the sewer line was encountered and broken allow- ing the seepage water to enter. The excavation was abandoned at this depth' (about 11 feet) and the sewer line was repaired and backfilled. 4 GEOTECNNICAL ENGINEERING DIVISION SETTLEMENT MECHANISM TRINITY ENGINEERING TESTING CORPORATION Based on our visual observations along Oak Ridge Drive and in the two test pit excavations, the following observations and comments would seem to be appropriate: 1. The street is constructed in an area where limestone is present at the existing ground level and thus the street should not be settling due to poor subgrade conditions. . The settlement area tends to follow the sewer trench alignment. The remainder of the street areas are in excellent condition. 3. The backfill material is not considered to be of particularly poor quality with the exception of the presence of rock boul- ders larger than 6 to 8 inches. Sufficient quantities of fines were present to act as filler and binder between the larger aggregate and rock boulders. 4 . Several voids were noted having been created as the result of the settlements of the underlying fill or due to the initial placement procedure. . Observations of the sewage effluent flow in the manhole indi- cated small flow quantities and no signs of material being washed into the sewer line. However, following the rupture of the line during the excavation of test pit no. 2, the flow increased substantially and was "muddy" evidencing the flow of the crusher fines into the broken line. . Observations adjacent to the sewer line in test pit no. 2 and adjacent to a water service line in test pit no. 1 indicated that the rock boulder type fill had been placed directly against or close enough to these pipes such that a distin- guishable cushioning layer could not be identified. 5 GEOTECHNICAL ENGINEERING DIVISION It is my opinion that the settlement has occured as the result of poor compaction of the sewer backfill. Similar settlements over utility trenches are noted throughout the Round Rock West area. The depth of the trench along Oak Ridge Drive has undoubtedly contributed to the extent of present settlements since more loose material is available to consolidate. Remedial repair should probably include removal of the hot mix in the affected areas to an extent that heavy compaction equipment can proof -roll the area and then be followed by a hot mix asphaltic concrete level -up. This is no guarentee against future settlement but would seem to be the most logical and economical approach to placing the street back in service. Respectfully submitted, TRINITY ENGINEERING TESTING CORPORATION abtAke,.644: Robert C. Davis, Ph.D., P.E. Chief Geotechnical Engineer RCD:cb TRINITY ENGINEERING TESTING CORPORATION 6 , E OF ROBERT D. DAVIS GEOTECHNICAL ENGINEERING DIVISION TRINITY ENGINEERING TESTING CORPORATION APPENDIX OEOTECHNICAL ENGINEERING DIVISION TRINITY ENGINEERING TESTING CORPORATION Test Location/ Description SEWER LINE TRENCH SETTLEMENT INVESTIGATION OAK RIDGE DRIVE ROUND ROCK, TEXAS SUMMARY OF FIELD DENSITY TESTS Moisture Unit Dry Percent Content Density Compaction (p.c.f.) ( %) 1. Top of base test pit #1 about 3 ft. west of man- hole (screenings) 11.4 117.5 102.8 2. Top of base test pit #1 about 6 ft. west of man- hole (screenings) 12.0 117.8 103.1 3. In test pit #1 about 8 inches down from top (screenings) 14.6 113.5 99.3 4. In test pit #1 about 17 inches down from top (screenings) 20.0 100.2 87.7 5. Top of base, east end of test pit #2 (screenings) 12.3 117.7 103.0 6. Top of base, west end of test pit #2 (screenings) 11.9 119.8 104.8 Note: See Plate II for moisture /density relationship. Plate I GEOTECNNICAL ENGINEERING DIVISION TRINITY ENGINEERING TESTING CORPORATION PROJECT: Oak Ridge Drive LOCATION: Round Rock, Texas Test Method: ASTM D698 Mold: 4 inch Hammer: 5.5 lb. Drop: 12 inches Blows: 25 Layers 3 116 114 112 110 108 106 COMPACTION TEST REPORT SAMPLE Test Pit No. I Description: Crushed Limestone Screenings Liquid Limit: - - -- Plasticity Index: Non - plastic Optimum Moisture: 14.7 Mot. Unit Dry Wt. 114.3 7 10 12 14 16 18 MOISTURE CONTENT IN PERCENT 20 Ibs./cu. ft. 22 Plate II BRANCH OFFICES Abilene, Texas 79605 1410 Sewell Street P.O. Box 5241 915/698 -3242 Austin, Texas 78767 3601 Manor Road P.O. Box 572 512/926 -6650 Carpus Christi, Texas 78408 5002 Ambassador Row P.O. Box 4293 512/854 -4774 Dallas, Texas 75222 2772 West Commerce St. P.O. Box 223571 214/688 -0954 Metro 214/263.0487 Killeen, Texas 4105 East Elm Road P.O. Box 5749 Fort Hood, Texas 76544 817/699.1126 Houston, Texas 77017 6502 Dixie Drive P.O. Box 87097 713/6413455 Odessa, Texas 79760 414 South Grandview Avenue P.O. Box 3024 915/3328557 San Angelo, Texas 76901 2728 Foster Street P.O. Box 562 915/6555119 Waco, Texas 76703 2000 South 15th Street P.O. Box 1994 817/754-0369 Wichita Falls, Texas 76307 507 Beverly Drive P.O. BOX 938 817/322.3952 Trinity Engineering Testing Corporation Wichita Falls • • Dallas Abilene • Odessa • Killeen • Aco San Angelo • Austin Corp.Hdqrts. Corpus Christi Houston WHEREAS, the City has contracted for the construction of an intake structure, lift pump, water transmission line and water treatment plant, and WHEREAS, the Council deems it desirable to retain an en- gineering testing firm to provide inspection and related pro- fessional services in connection with the construction proj- ect, and WHEREAS, Trinity Engineering Testing Corporation (TETCO) has submitted a proposed agreement whereby it would provide the needed professional services for a fee not to exceed $171,984.45, and WHEREAS, the Council desires to enter into the agreement with TETCO, Now Therefore BE IT RESOLVED BY THE COUNCIL OF THE CITY OF ROUND ROCK, TEXAS RESOLUTION NO. .rJ 96 That the Mayor is hereby authorized and directed to execute on behalf of the City an agreement with TETCO to provide inspection and related professional services, a copy of said agreement being attached hereto and incorporated herein for all purposes. ATTEST: RESOLVED this 9th day of July, 1 • JOWNNE LAND, City Secretary `r ale -� R Y L . ` ONN , J ayor City of Round Rock, Texas TEXAS COUNCIL OF ENGINEERING LABORATORIES AGREEMENT FOR MATERIALS ENGINEERING AND RELATED CONSTRUCTION INSPECTION AND MATERIALS TESTING SERVICES THIS AGREEMENT is by and between the City of Round Rock, Texas hereinafter called CLIENT and Trinity Engineering Testing Corporation hereinafter called LABORATORY, who agree as follows: 1. DECLARATIONS. CLIENT desires to engage LABORATORY to provide Materials Engineering and related construction inspection and materials testing services in connection with CLIENT's project ( "THE PROJECT ") described as follows: Lake Georgetown to Round Rock Water Supply Improvements Projects LABORATORY has submitted a fee schedule to CLIENT, a copy of which is attached hereto and made a part hereof as Exhibit "A" for Materials Engineering and related construction inspection and materials testing services, which fee schedule is acceptable to CLIENT. 2. SCOPE OF WORK. LABORATORY shall provide Materials Engineering and related construction inspection and materials testing services for THE PROJECT in accordance with the accompanying proposed "scope of services" made a part hereof as Exhibit "B" and the "terms and conditions" made a part of this agreement. EXECUTED THIS 9 F ' day of TCEL FORM 7502 TEXAS COUNCIL OF ENGINEERING LABORATORIES TERMS AND CONDITIONS TO AGREEMENT FOR MATERIALS ENGINEERING AND RELATED CONSTRUCTION INSPECTION AND MATERIALS TESTING SERVICES ARTICLE 1. SERVICES. LABORATORY will: 1.1 Act for CLIENT in a professional manner, using that degree of care and skin ordinarily exercised by and consistent with the standards of the profession practicing in the same or similar locality of THE PROJECT site. 1.2 Provide only those services that, in the opinion of LABORATORY, lie within the technical and professional areas of expertise of LABORATORY and which LABORATORY is adequately staffed and equipped to perform. 1.3 Perform all technical services under the general direction of a Registered Professional Engineer and in substantial accordance with the basic requirements of the appropriate Standards of The American Society for Testing and Materials, where applicable, or other standards designated by CLIENT. 1.4 Promptly submit formal reports of all tests, inspections and services performed indicating, where applicable, compliance with THE PROJECT specifications or other contract documents. Such reports shall be complete and factual, citing the tests performed, methods employed, values obtained, parts of the structure or PROJECT area involved. 1.5 Employ testing machines which have been calibrated within a period not exceeding twelve (12) months from the time of use by devices of accuracy traceable to the National Bureau of Standards of the United States Department of Commerce, and, upon request, submit to CLIENT or his authorized representative documentation of such calibration. 1.6 Consider all reports to be the confidential property of CLIENT, and distribute reports only to those persons, organizations or agencies specifically designated in writing by CLIENT or his authorized representative. 1.7 Retain all pertinent records relating to the services performed for a period of five years following submission of the report, during which period the records will be made available to CLIENT at all reasonable times. ARTICLE 2. CLIENT'S RESPONSIBILITIES. CLIENT or his authorized representative will: 2.1 Provide LABORATORY with all plans, specifications, addenda, change orders, approved shop drawings and other information for the proper performance of LABORATORY. 2.2 Issue authorization in writing, giving LABORATORY free access to THE PROJECT site, and to an shops or yards where materials are prepared or stored. 2.3 Designate in writing a person or firm to act as CLIENT's representative with respect to LABORATORY's services to be performed under this Agreement; such person or firm to have complete authority to transmit instructions, receive information and data, interpret and define CLIENT'S policies and decisions with respect to THE PROJECT and to order, at CLIENT'S expense, such technical services as may be requested by LABORATORY. 2.4 Designate in writing those persons or firms who are authorized to receive copies of LABORATORY's inspection and test reports. 2.5 Advise LABORATORY sufficiently in advance of any operations so as to allow for assignment of personnel by LABORATORY for completion of the required services. Such advance notice shall be in accordance with that established by mutual agreement of the parties. 2.6 Direct THE PROJECT contractor, either by the Construction Contract or direct written order to: (a) Secure and deliver to LABORATORY, without cost to LABORATORY, preliminary representative samples of those materials he proposes to use which require testing, together with any relevant data of the materials. (b) Furnish such casual labor and all facilities needed by LABORATORY to obtain and handle samples at THE PROJECT and to facilitate the specified inspection and tests. (c) Provide and maintain for the use of LABORATORY, adequate space at THE PROJECT for safe storage and proper curing of test specimens which must remain on THE PROJECT site prior to testing. ARTICLE 3. GENERAL CONDITIONS: 3.1 LABORATORY, by the performance of services covered hereunder, does not in any way assume, abridge or abrogate any of those TCEL FORM 7502 dunes, responsibilities or authorities with regard to THE PROJECT customarily vested in THE PROJECT architects, design engineers, or any other design agencies or authorities. 3.2 LABORATORY shall not be responsible for acts of omissions of any party or parties involved in the design of THE PROJECT or the failure of any contractor or subcontractor to construct any aspect of THE PROJECT in accordance with recommendations contained in any correspondence or verbal recommendation issued by LABORATORY. 3.3 LABORATORY is not authorized to revoke, alter, relax, enlarge or release any requirement of THE PROJECT specifications or other contract documents nor to approve or accept any portion of the work, unless specifically authorized in writing by CLIENT or his authorized representative. LABORATORY shall not have the right of rejection or the right to stop the work, except for such periods as may be required to conduct the sampling, testing, or inspection of operations covered by the Agreement. 3 4 This Agreement may be terminated by either party on ten (10) days' written notice or by mutual agreement. If this Agreement is terminated by either party, LABORATORY shall be paid in full for all services performed through the termination date, and the CLIENT shall be provided with a complete report of the results of tests and analysis conducted prior to termination. 3 5 Neither CLIENT nor LABORATORY may delegate, assign, sublet 00 transfer his duties or interest in this Agreement without the written consent of the other party. 3 6 The only warranty made by LABORATORY in connection with its services performed hereunder is that it will use that degree of care and skill as set forth in Article 1.1 above. No other warranty, expressed or implied, is made or intended for services provided hereunder or furnishing oral or written reports of findings made. ARTICLE 4. INSURANCE: 41 LABORATORY shall secure and maintain throughout the full period of this Agreement sufficient insurance to protect it adequately from claims under applicable Workmen's Compensation Acts and from claims for bodily injury, death or property damage as may arise from the performance of services under this Agreement. LABORATORY will, upon request, file certification of such insurance coverage with CLIENT or his authorized representative. 4 2 No insurance, of whatever kind or type, which may be carried by LABORATORY, is to be considered as in any way limiting the contractor's or subcontractor's responsibility for damages resulting from his operations or for furnishing work and materials to THE PROJECT. CLIENT agrees, therefore, to include, or cause to be included in THE PROJECT's construction contract, such requirements for insurance coverage and performance bonds to be secured and maintained by THE PROJECT contractor as CLIENT deems adequate to indemnify CLIENT, LABORATORY, and other concerned parties, against claims for damages and to insure compliance of work performance and materials with PROJECT requirements. ARTICLE 5. PAYMENT: 5.1 CLIENT will pay LABORATORY for services and expenses in accordance with the attached fee schedule (Exhibit A). LABORATORY's invoices will be presented at the completion of its work or monthly and will be paid within thirty (30) days of receipt by CLIENT or his authorized representative. - 5.2 LABORATORY shall be paid in full for all services under the Agreement, including any overruns of CLIENT's contract or any unforeseen need for LABORATORY's services exceeding original contract requirements. Payment for such services shall be made irrespective of any claim by CLIENT for compensation for additional work conducted. Any such claim shall in no respect delay payment of fees for services performed by LABORATORY. ARTICLE 6. EXTENT OF AGREEMENT: The Agreement, including these terms and conditions, represents the entire agreement between CLIENT and LABORATORY and supersedes all prior negotiations, representations or agreements, written or oral. The Agreement may be amended only by written instrument signed by CLIENT and LABORATORY. ARTICLE 7. APPLICABLE LAW: The Agreement shall be governed by the laws of the State of Texas. I. Fee Schedule II. Total Cost Senior Technician, per month Transportation, per month Monthly Add -On Exhibit "A" A. The following fees will be charged for each member of the inspection team: Field Engineer, per month Transportation, per month On -Site Field Office, per month Basic Monthly Fee $5,937.50 390.00 300.00 $3,850.00 390.00 Technician, per month $3,036.00 Transportation, per month 390.00 B. The following overtime rates will apply for time worked after the initial 40 -hour period in a week: Senior Technician, per hour $ 26.25 Technician, per hour 20.70 C. The following fees will be charged for Specialty Inspections: Blast Monitoring, per day $ 250.00 Welding Inspection, per day 280.00 D. Off -Site Laboratory Tests will be performed for the following fees: Atterberg Limits Tests, per each Gradation Tests, per each Moisture /Density Relations Tests, per each Concrete Cylinder Testing, per each $ 45.00 30.00 125.00 12.00 $6,627.50 $4,240.00 $3,426.00 A. The cash -flow distribution estimate developed by Haynie & Kallman, Inc. has been used to project the man -power requirements of the inspection team. The CLIENT will furnish one technician - inspector for the dura- tion of the project to supplement the LABORATORY'S staff. It will be the responsibility of the field engineer to manage the time and re- sources of the inspection team to minimize work hours in excess of 40 per week. If the occasion arises where over -time is warranted, author- ization will be requested from the CLIENT. A 10 percent contingency has been added to the man -power cost shown on attached Plate I to cover additional charges due to overtime or contract delays. Man -Power Cost Estimate $163,129.45 (Item 4 #1) Exhibit "A" Page 2 B. The estimated cost for Specialty Inspections are as follows: Blast Monitoring 4 days @ $250 /day = $ 1,000.00 Welding Inspection 5 days @ $280 /day = 1,400.00 Sub -Total = $ 2,400.00 10% Contingency = 240.00 Total $ 2,640.00 (Item !i2) C. The estimated cost for Off -Site Laboratory Tests are as follows: Atterberg Limits Tests 10 @ $45.00 each $ 450.00 Gradation Tests 10 @ $30.00 each= 300.00 Moisture /Density Relations Tests 20 @ $125.00 each= 2,500.00 Concrete Cylinder Compressive Strength Tests 200 @ $12.00 each 2,400.00 Sub -Total $ 5,650.00 10% Contingency= 565.00 Total $ 6,215.00 (Item #3) D. The following cost summary represents the maximum total cost of the services described herein: Man -Power Cost Specialty Inspections Cost Off -Site Laboratory Tests Cost Total Cost $163,129.45 (Item #E1) 2,640.00 (Item //2) 6,215.00 (Item #f3) $171,984.45 Exhibit "B" - Scope of Services General: Trinity Engineering Testing Corporation will provide on -site inspection and testing services during the course of "The Project ". A field engineer will be assigned to "The Project" for its duration to serve as the leader of the on- site inspection team and as the principal liason between the contractors and the CLIENT. As the projects begin and the need arises, additional personnel will be assigned to the inspection team, with the approval of the CLIENT, for a minimum period of one month. Transportation: Each member of the inspection team will be provided with trans- portation to allow mobility from one portion of "The Project" site to another. Mobil Communication: Preliminary plans are to use CB radios to communicate be- tween the field laboratory- office and the transportation units. This form of communication will be provided without additional cost to the CLIENT. In the event that communication using CB radios is ineffective, the LABORATORY proposes to negotiate an additional fee to provide two -way radio units in two of the inspection -team vehicles. Facilities: A field laboratory- office unit will be set up at the Water Treatment Plant site. Electricity and telephone service will be provided by the LABORATORY. Proposed Services: The following services are to be provided during the construction: I. Services Performed by the On -Site Inspection Team: A. Project Administration: The field engineer will direct members of the inspection team, maintain all records of material inspec- tion and tests, assist the contractors in interpreting "The Project" plans and specifications, and maintain other records of The Project" that the CLIENT requires. The field engineer will consult with the design engineer on any interpretation of "The Project" plans and specifications that may be required. B. Site Work: An inspector- technician will provide visual inspec- tion of the foundation grouting, site clearing and subgrade preparation, and compaction of fill materials and pavement mate- rials. Each type of soil to be compacted will be sampled and delivered to the Austin laboratory for determination of the max- imum unit weight and optimum moisture content. Field Density tests will be performed by the inspector- technician as the mate- rials are compacted. C. Foundation Inspection: An inspector- technician will make visual inspection of the foundation excavations prior to the placement of reinforcing steel and concrete to assure a proper bearing surface. Size and placement of reinforcing steel will also be observed. Exhibit "B" - Scope of Services Page 2 D. Water Line Inspection: An inspector- technician will make visual inspection of the trench excavations, preparation of the bedding material, pipe placement and connection, leak testing, and back - fill placement and compaction. E. Concrete: The inspector- technician will make periodical visits to the concrete batch plant to observe the materials, moisture corrections for batch weights and the batching operations. Dur- ing the placement of concrete the inspector- technician will check each redimix truck as it arrives on the project to observe and maintain the consistency of the concrete and control the water added at the job site. The inspector - technician will perform air content, slump tests and make concrete cylinders on a regular basis. A record of the quantity of concrete and the temperature of the plastic concrete will be maintained for each day's opera- tion. The inspector- technician will transport the concrete cyl- inders to the Austin laboratory after they are twenty hours of age. F. Materials and Equipment: An inspector- technician will visually inspect all pipe, pumps, valves, and other materials and equip- ment prior to their being incorporated in the project. G. Other: Additional inspections will be made as needed. II. Specialty Inspections: The following services are to be provided by TETCO- Austin personnel on a call -out basis as needed: A. Blast Monitoring: A Sprengnether Engineering Seismograph (VS -1100) will be used to measure the ground particle velocity in sensitive areas receiving vibrations from blasting. The data developed by this monitoring program can be used to aid the contractor in limit- ing the vibration. B. Welding Inspection: Visual inspection of the welding procedures and welds used in constructing the ground storage tank will be performed by a CWI inspector- technician as certified by AWS. III. Off -Site Laboratory Tests: The following testing services will be conducted in the TETCO- Austin laboratory: A. Atterberg Limits Tests B. Gradation Tests C. Moisture /Density Relations Tests D. Concrete Cylinder Compressive Strength Tests Month /Year ESTIMATED MAN POWER REQUIREMENTS AND COST ESTIMATE Cash Flow as No. of Contracts Field Senior Other Cost of Field of Total in Progress Engineer Technician Technicians Staff Services June, 1981 0 0 0 0 0 0 July, 1981 1.4 3 1 1 0 $10,867.50 August, 1981 10.1 5 1 1 1 14,293.50 Sept., 1981 15.0 7 1 1 1 14,293.50 Oct., 1981 18.9 8 1 1 1 14,293.50 Nov., 1981 14.7 8 1 1 1 14,293.50 Dec., 1981 8.8 7 1 1 1 14,293.50 Jan., 1982 9.5 5 1 1 1 14,293.50 Feb., 1982 7.3 3 1 1 1 14,293.50 March, 1982 5.2 2 1 1 0 10,867.50 April, 1982 2.9 1 1 0 0 6,627.50 May, 1982 2.1 1 1 0 0 6,627.50 June, 1982 2.1 1 1 0 0 6,627.50 July, 1982 2.0 1 1 0 0 6,627.50 PLATE I Sub -Total = $148,299.50 10% Contingency = 14,829.95 Total = $163,129.45 (Item Ifl) HAZARDS POLICY NUMBER EFFECIIVE DATE EXPIRATION DATE COVERAGES AND LIMITS OF LIABILITY • BODILY INJURY 11ABll ITY PROPERTY DAMAGE LIABILITY EACH PERSON EACN OCCURRENCE EACH OCCURRENCE Apono IE General O p e, y v „m,re,- o p„e ee, ALU 65 45 33 10 -20 -80 10 -20 -81 j eg , 300 000 1 100 .000 ( 100 ADO Elevolws • , ,000 % 000 s .000 independent Commdars s ,000 S ,000 $ .000 s ,000 P,od.cH Cempleled OPerolium S .000 s .000 S .000 S ,000 AGGREGATE e S OQ0 celr.avoly, described bolo. d ALU 65 45 33 10 -20 -EO 10 -20 -81 ,000 300 -s 000 100 , .000 100 , .000 (DESIGIATED CONTRACTS OrNLY) A.mmobiteliobiles o-Nea A.Iemebaer A LU 65 45 33 10 -20 -80 10 -20 -81 ' 250.000 r 500 aoo . 100 .000 Hired MoomebAss (Included) s .000 r .DOD + .000 NonO.ead A vIo. obiles (Included) s .000 + 000 .000 YaeAar.d, Compaagtlw ACS 11 60 81 10 -20 -80 10 -20 -81 COG PENSAIION SIATUIORY STAT ISI TEXAS AND AS PER ALL STATES ENDORSEMENT, $500,000 EMPLOYERS Nomad Insured a Address Issued Al 1ba Rwwwal 0I C. L Z079SG L ROYAL RADIOGRAPHY, SOIL AND MATERIALS TESTING IF LIMITS OF LIABILITY DIFFER FROM POLICY LIMITS, CHECK HERE: El r The City of Round Rock Round Rock, Texas 78664 Orig. & cc: TETCO- Austin INSURANCE COMPANIES CERTIFICATE OF INSURANCE GLOBE r r TRINITY ENGINEERING TESTING CORPORATION INSURANCE SPECIALISTS OF AUSTIN P. O. BOX 572 Pmam.r P. 0. BOX 99 AUSTIN, TEXAS 78767 AUSTIN, TEXAS 78767 L - L The policies indicated herein apply with respect to the hazards and for the coverage and limits of liability indicated by specific entry herein, subject to all the terms and conditions of such policies. This certificate is issued as a matter of information only. and confers no rights on the holder. It imposes no liability upon the Company and does not amend, extend, or alter in any way the coverage or the limits of liability afforded by any Of the policies designated herein. COMPANY AMERICAN & FOREIGN INSURANCE COMPANY IDAtE LOCATION AN0 DESCRIPTION OF OPERATIONS, AUTOMOBILES, CONTRACTS. ETC. 1100 CONTRACTS, INDICATE TYPE OE AGR((M(NI, PARTY AND DATE.I Project: Lake Georgetown to Round Rock Water Supply Improvements, Round Rock, Texas. This is to certify that the Compony named herein has issued to the Nomed Insured the policies listed above. 7 -9 -81