Seattle City Light Construction Management

Seattle City Light Construction Management Submittal Transmittal & Response Shaded areas are for SCL use only Submittal Number: 0102.1 Date: 10/26/2015 (Contractor: give each submittal transmittal a consecutive number beginning with 001. Resubmittals will be identified numerically, e.g., 001.1 ) Note: One form, in MS Word, shall be filled out for each submittal item. The only exception will be if multiple items from the same supplier are submitted as a package for the same scheduled work. Form can be modified to add lines as needed.) Contract Name: T-117 Adjacent Street Cleanup PW #: 2014-012 Contractor: Gary Merlino Construction Co. Sub item # The Contractor submits the following noted attachments to Engineer for review and response: Spec Sec. # DESCRIPTION SCL Response 1 2-07 Shoring Plan SI 2 3 4 Resubmittal Supplemental Submittal Submitted by: Patrick Hafferty Project Manager 206-391-4938 Printed Name Printed Title Phone # The Engineer has reviewed the above noted documents and responded as noted above, under SCL Response. Key: NE = NO EXCEPTIONS TAKEN MC = MAKE CORRECTIONS NOTED: No resubmittal required, but corrections noted are required SI RR RJ I = SUBMIT SPECIFIED ITEM: Resubmittal required rejected, see comments below = REVISE AND RESUBMIT: Resubmittal required rejected, see comments below = REJECTED see comments below = INFORMATION ONLY Note: Review is only for conformance with the general design concept of the Project and does not extend to consideration of structural integrity, safety, detailed compliance with Contract requirements and any other obligation of the Contractor. Any action shown is subject to the requirements of the construction Contract. Contractor is responsible for confirming and correlating all dimensions; fabricating and construction techniques; coordinating its work with that of all other trades; and the satisfactory performance of its entire work in strict accordance with the construction Contract. The review is undertaken solely to satisfy Engineer s obligations and does not relieve Contractor from its obligation fully to perform all Contract requirements, nor shall such review give rise to any right of action or suit in favor of Contractor or third persons, against the Owner. Comments or actions may not be complete, once non-compliance is documented, the review may be discontinued and the submittal rejected. Engineer s Comments and Sign-off: # (key to above) 1 Comment If the shoring system will be used in a non-trench capacity, submit calculations performed by a structural engineer licensed in the State of Washington to demonstrate that the system will adequately resist sliding and overturning forces. Eric Pilcher Engineer of Record 10/27/2015 Signature Printed Name & Title Date See Attached Engineer s Comments See Mark-Up of Submittal Documents See Other Attachments

Cc: Project File Form (Rev. 03/15)

In response to SCL submittal 102 response dated 10/23/15, GMCC provides the following supplemental information. Specification section 2 07.3(1) requires protective systems used in excavations over 20ft in depth to be designed by a registered professional engineer. This contract does not have excavations that exceed 20ft in depth. Tabulated data for shoring provided in submittal #102 and #102.1 is a pre engineered shoring systems which does not require shop drawings or designed WA state professional engineer as stated in the submittal response. Specification Section 2 07.3(2) only requires the protective system be designed and maintained by a competent person and shall meet accepted engineering requirements or practices. The information provided in submittal #102 and #102.1 complies with this specification.

TABULATED DATA VERTICAL SHORES January 1, 1995 3330 S. SAM HOUSTON PKWY E. HOUSTON, TEXAS 77047 Tel: (713) 943-0750 U.S.A. Toll Free: (800) 231-6662 Fax: (713) 943-8483 COPYRIGHT, U.S.A., SPEED SHORE CORPORATION, 1995

January 1, 1995 VERTICAL SHORES Page 2 of 8 W A R N I N G EXCAVATION PROCEDURES MAY BE VERY DANGEROUS A TRAINED COMPETENT PERSON SHALL: SUPERVISE ALL EXCAVATION OPERATIONS, ENSURE THAT ALL PERSONNEL ARE WORKING IN SAFE CONDITIONS, AND HAVE THOROUGH KNOWLEDGE OF THIS TABULATED DATA. THE COMPETENT PERSON SHALL HAVE THE AUTHORITY TO STOP WORK WHEN IT IS UNSAFE FOR WORKERS TO ENTER AN EXCAVATION. ALL PERSONNEL SHALL BE TRAINED IN CORRECT EXCAVATION PROCEDURES, PROPER USE OF THE PROTECTIVE SYSTEM AND ALL SAFETY PRECAUTIONS. EXCAVATIONS AND PROTECTIVE SYSTEMS SHALL BE INSPECTED AT LEAST DAILY AND WHENEVER THERE IS A CHANGE OF SOIL, WATER OR OTHER JOB SITE CONDITIONS. ALL LIFTING AND PULLING EQUIPMENT, INCLUDING CABLES, SLINGS, CHAINS, SHACKLES AND SAFETY HOOKS SHALL BE EVALUATED FOR SUITABILITY AND CAPACITY, AND SHALL BE INSPECTED FOR DAMAGE OR DEFECTS PRIOR TO USE. ALL INSTALLATION AND REMOVAL OF SHORING AND SHIELDING SHALL BE FROM ABOVE GROUND ONLY. DO NOT ALLOW PERSONNEL TO ENTER AN EXCAVATION THAT IS NOT PROPERLY SHORED, SHIELDED OR SLOPED. PERSONNEL SHALL ALWAYS WORK WITHIN THE SHORING AND SHIELDING. PERSONNEL SHALL NOT STAND ON THE EDGE OF AN UNSHORED EXCAVATION. ALL PERSONNEL SHALL ENTER AND EXIT EXCAVATIONS ONLY WITHIN SHIELDED OR SHORED AREAS. SPEED SHORE'S "MANUFACTURER'S TABULATED DATA" IS A GENERAL SET OF GUIDELINES AND TABLES TO ASSIST THE COMPETENT PERSON IN SELECTING A SAFETY SYSTEM AND THE PROPER SHORING OR SHIELDING EQUIPMENT. THE COMPETENT PERSON HAS SOLE RESPONSIBILITY FOR JOB SITE SAFETY AND THE PROPER SELECTION AND INSTALLATION AND REMOVAL OF THE SHORING OR SHIELDING EQUIPMENT. THIS TABULATED DATA IS NOT INTENDED TO BE USED AS A JOB SPECIFIC EXCAVATION SAFETY PLAN, BUT SHALL BE USED BY THE COMPETENT PERSON TO SUPPLEMENT HIS TRAINING, HIS EXPERIENCE AND HIS KNOWLEDGE OF THE JOB CONDITIONS AND SOIL TYPE. COPYRIGHT, U.S.A., SPEED SHORE CORPORATION, 1995

January 1, 1995 VERTICAL SHORES Page 3 of 8 SPEED SHORE TABULATED DATA 1.0 SCOPE 1.1 Speed Shore's Tabulated Data complies with the O.S.H.A. standards as stated in the Code of Federal Regulations 29, Part 1926, Subpart P - Excavations, Section 1926.652(c)(2). This data shall only be used by the contractor's competent person in the selection of Speed Shore Vertical Shores. The competent person shall be experienced and knowledgeable in trenching and excavation procedures, soil identification and in the use of Speed Shore Vertical Shores. 1.2 All personnel involved in the installation, removal and use of Vertical Shores shall be trained in their use and advised of appropriate safety procedures. 1.3 Table VS-1, VS-2 and VS-3 is based upon requirements stated in CFR 29, Part 1926 and applicable portions of CFR 29, Part 1910. The competent person shall know and understand the requirements of those parts before using this data. 1.4 Whenever there is a variance between this Tabulated Data and CFR 29, Part 1926, Subpart P - Excavations, this Tabulated Data shall take precedence. Whenever a topic or subject is not contained in this Tabulated Data, the competent person shall refer to CFR 29, Part 1926, Subpart P - Excavations. 1.5 This data refers to the Code of Federal Regulations, 29, Parts 1910 and 1926. In states that have their own state O.S.H.A. refer to similar regulations in the current construction rules published by the state office of Occupational Health and Safety. 1.6 Tables VS-1, VS-2 and VS-3 shall be used only in excavations with soil conditions as noted. Table VS-1, VS-2 and VS-3 are for depths to 25 feet. For other soil and excavation conditions and depths, site-specific engineered designs are required. Contact Speed Shore Corporation for assistance 1.7 This Tabulated Data is applicable for standard products manufactured exclusively by Speed Shore and may only be used with Speed Shore manufactured products. Any modification or repair of Speed Shore products not specifically authorized by Speed Shore Corporation voids this data. 2.0 DEFINITIONS (RE: CFR 29, Part 1926.32 Definitions) - RESTATED FOR EMPHASIS 2.1 1926.32 (f) "competent person" means one who is capable of identifying existing and predictable hazards in the surroundings or working conditions which are unsanitary, hazardous or dangerous to employees; and who has authorization to take prompt corrective measures to eliminate them. 2.2 1926.32 (p) "Shall" means mandatory. 2.3 1926.32 (q) Should means recommended. 3.0 SOIL CLASSIFICATIONS 3.1 In order to use the data presented in Tables VS-1, VS-2 and VS-3 the soil type, or types, in which the excavation is cut shall first be determined by the competent person according to the O.S.H.A. soil classifications as set forth in CFR 29, Part 1926, Subpart P, Appendix A. 3.2 Table VS-3 is also for use in Type C-60 soil (see 3.3 for definition). 3.3 Type C-60 soil is a moist, cohesive soil or a moist dense granular soil, which does not fit into Type A or Type B classifications, and is not flowing or submerged. This material can be cut with near vertical sidewalls and will stand unsupported long enough to allow the Vertical Shores to be properly installed. The competent person must monitor the excavation for signs of deterioration of the soil as indicated by, but not limited to, freely seeping water or flowing soil entering the excavation around or below the sheeting. An alternate design for less stable Type C soil will be required where there is evidence of deterioration. COPYRIGHT, U.S.A., SPEED SHORE CORPORATION, 1995

January 1, 1995 VERTICAL SHORES Page 4 of 8 4.0 PRESENTATION OF INFORMATION 4.1 Information is presented in tabular form in Tables VS-1, VS-2 and VS-3. Each table presents the maximum vertical and horizontal spacing that may be used with Vertical Shores for indicated soil types. Table VS-1 is for O.S.H.A. Type A Soil, Table VS-2 for O.S.H.A. Type B Soil and Table VS-3 is for Vertical Shore use in Type C-60 soil (see 3.3 for definition). 4.2 Tables VS-1, VS-2 and VS-3 are not considered adequate when loads imposed by structures or by stored material adjacent to the trench weigh in excess of the load imposed by 3 feet of soil surcharge. The term "adjacent" as used here means the area within a horizontal distance from the edge of the trench equal to the depth of the trench. 4.3 Using the appropriate table, the competent person selects the horizontal spacing of the vertical shores and the sheeting required, if any. The selection is based on the depth and width of the trench in varying soil conditions. In these tables, the vertical spacing of the cylinders is held constant at a maximum of 4 feet on center. The horizontal spacing of the hydraulic cylinders is the same as the horizontal spacing of the vertical rails. 5.0 BASIS AND LIMITATIONS OF THE DATA 5.1 Sheeting is used only to prevent local raveling or sloughing of the trench face between the Vertical Shores. Sheeting shall be one of the following or an approved equal. 5.1.1 Aluminum: Speed Shore's Aluminum Sheeting 5.1.2 Steel: 0.5 inch or thicker Steel Plate 5.1.3 Plywood: 3/4 inch Finn Form 3/4 inch Omni Form 3/4 inch Combi Exterior Plywood 3/4 inch Plyform American Plywood Association, Plyform, B - B, Class I Exterior 3/4 inch HDO American Plywood Association, High Density Overlay, Exterior 3/4 inch 14 Ply Artic White Birch 1 1/8 inch CDX Two sheets of 3/4 inch thick CDX Plywood. 5.2 When sheeting is used, it shall extend to the top the excavation and to within 2 feet of the bottom of the excavation; except in Table VS-3 for excavation depths 0-25 feet, where the sheeting shall extend to the bottom of the excavation. If there is an indication of a possible loss of soil from behind or below the support system, sheeting must extend to the bottom of the excavation. 5.3 All spacings indicated are measured from center to center of the members. 5.4 The center line of the top hydraulic cylinder shall be a minimum of 12 inches and a maximum of 24 inches below the top of the excavation. 5.5 The center line of the bottom hydraulic cylinder shall be a maximum of 4 feet above the bottom of the excavation. 5.6 In excavations 6 feet deep or less, only 1 hydraulic cylinder (Single Shore) is required in each vertical plane. The cylinder shall be no more than 4 feet above the bottom of the excavation, and no more than 2 feet below the top of the excavation. In excavations 6 feet to 10 feet deep there shall be a minimum of 2 hydraulic cylinders in each vertical plane. The horizontal spacing shall be as shown in the tables. 5.7 The vertical rails directly behind each hydraulic cylinder pad must bear on firm soil or a solid and stable filler to distribute the cylinder load to the face of the excavation. Do not butt rails back to back across an excavation. 5.8 Two single shores may be substituted for a vertical shore. 5.9 The aluminum rails are designed to be used vertically, however they may be orientated horizontally or diagonally if all other provisions of this data are satisfied. 5.10 The maximum vertical spacing between center lines of hydraulic cylinders shall be 4 feet. COPYRIGHT, U.S.A., SPEED SHORE CORPORATION, 1995

January 1, 1995 VERTICAL SHORES Page 5 of 8 5.11 The faces of the excavation must be cut near vertical and straight 5.12 There shall be a minimum of 3 consecutive shores in a row, at the horizontal spacing indicated (or less), to form a shoring system. In trenches over 12 feet deep, and whenever possible, a minimum of 4 shores should be used. For excavations that are too short to place 3 or 4 shores at the required spacing, the shores shall be placed at the required spacing from end to end of the excavation with a minimum of 2 shores. There shall be a shore within 2 feet of each end of the excavation 5.13 The ends of trenches shall be shored or sloped in accordance with Appendix B of CFR 29, Part 1926 Subpart P Excavations. 5.14 No vertical or lateral loads shall be applied to the cylinders. 5.15 Water flowing into an excavation, from either above or below ground, will cause a decrease in the stability of the soil. Therefore, the competent person shall take action to prevent water from entering the excavation and remove any water that accumulates in the excavation. Closer monitoring of the soil is required under wet conditions, particularly in less cohesive (weaker) soil conditions. A small amount of water, or flowing conditions, may downgrade the soil classification to a less stable classification. A large amount of water, or flowing conditions, may downgrade all soils to O.S.H.A. Type C. Speed Shore shoring and shielding systems may be used safely in wet conditions when the excavation is monitored by the competent person. Example: When repairing a leak in utility lines, it is often difficult or even impossible, to keep water out of the excavation. 5.16 If shores are installed on the seam between 2 adjacent sheets of plywood, each plywood sheet shall bear a minimum of 4 inches on each vertical rail. 5.17 Tables VS-l, VS-2 and VS-3 shall be used only for selecting the spacing and excavation depths for Single Shores, Vertical Shores and Multi-Shores. Normally, a Single Shore has 1 hydraulic cylinder, a Vertica1 Shore has 2 hydraulic cylinders and Multi-Shores have 3 or more hydraulic cylinders. All three types may be used and may be mixed if the provisions of this Tabulated Data are followed. 6.0 INSPECTION 6.1 The competent person must evaluate the soils to assure the rated capacity of the Vertical Shores is not exceeded by the lateral pressure of the soil. Soils shall be evaluated in accordance with Part 3.0. 6.2 The competent person shall monitor all phases of the assembly, installation and use of this product to evaluate and eliminate methods, which could endanger employees utilizing this product. 6.3 Daily inspections of the Vertical Shores and accessories must be performed by the competent person and deficiencies corrected. 6.4 Inspections shall be conducted as necessary for hazards associated with water accumulation, changing soil conditions, or changing site weather conditions. COPYRIGHT, U.S.A., SPEED SHORE CORPORATION, 1995

January 1, 1995 VERTICAL SHORES Page 6 of 8 7.0 EXAMPLE TO ILLUSTRATE THE USE OF TABLES VS-1, VS-2 and VS-3: Problem: Design a trench safety system using Speed Shore Vertical Shores for an excavation 8 feet deep and 4 feet wide in O.S.H.A. Type B soil. Study tables: Select Table VS-2 for Type B soil. Look in the column Depth of Excavation on line 0 to 15 feet. Next, read across and find under Hydraulic Cylinders, Maximum Horizontal Spacing at 8 feet and Maximum Vertical Spacing at 4 feet. Next, locate the hydraulic cylinder size under Width of Excavation, 0 to 8 feet : 2 inch diameter. Finally, under Sheeting, Notes 2 and 3 apply. Conclusion: Install Speed Shore Vertical Shores with 2 inch diameter cylinders at 8 feet intervals with or without plywood sheeting, depending upon the competent person s judgment of the raveling or sloughing of the excavation face. (See Notes 2 and 3). TABLE VS-1 TYPE A SOIL Depth HYDRAULIC CYLINDERS Sheeting of Maximum Maximum Vertical Width of Excavation Excavation Horizontal Spacing (Note 6) FEET (Note 3) FEET Spacing (FEET) FEET 0 to 8 8 to 12 12 to 15 0 to 15 8 4 2" dia. 2" dia. 2" dia. (Note 1) (Note 2) 0 to 25 8 4 2" dia. 2" dia. (Note 1) 2" dia. (Note 1) (Note 2) TABLE VS-2 TYPE B SOIL Depth HYDRAULIC CYLINDERS Sheeting of Maximum Maximum Vertical Width of Excavation Excavation Horizontal Spacing (Note 6) FEET (Note 3) FEET Spacing (FEET) FEET 0 to 8 8 to 12 12 to 15 0 to 10 8 4 2" dia. 2" dia. 2" dia. (Note 1) (Note 2) 0 to 20 6 4 2" dia. 2" dia. (Note 1) 2" dia. (Note 1) (Note 2) 0 to 25 5 4 2" dia. 2" dia. (Note 1) 2" dia. (Note 1) (Note 7) TABLE VS-3 TYPE C-60 SOIL (See 3.3 for definition of C-60 Soil) Depth HYDRAULIC CYLINDERS Sheeting of Maximum Maximum Vertical Width of Excavation Excavation Horizontal Spacing (Note 6) FEET (Note 4) FEET Spacing (FEET) FEET 0 to 8 8 to 12 12 to 15 0 to 10 6 4 2" dia 2" dia 2" dia. (Note 2) (Note 5) (Note 1) 0 to 20 4 4 2" dia 2" dia. (Note 1) 2" dia. (Note 1) (Note 7) 0 to 25 4 4 2" dia 2" dia. (Note 1) N/A (Note 7) COPYRIGHT, U.S.A., SPEED SHORE CORPORATION, 1995

January 1, 1995 VERTICAL SHORES Page 7 of 8 NOTES TO TABLES VS-1, VS-2 and VS-3 1. Two inch diameter cylinders shall have a structural steel tube oversleeve 3.5 x 3.5 x 0.1875 inches extension (installed over the aluminum oversleeve extension) or a steel tube oversleeve 3 x 3 x 0.1875 inch extension (installed without the aluminum oversleeve) that extends the full retracted length of the cylinder. CAUTION: In either case, the aluminum load transfer plug and the aluminum innersleeve shall be used or a steel load transfer plug shall be welded securely in place inside the steel oversleeve to transfer the load through the steel oversleeve to the socket pad. Other Speed Shore approved oversleeves may be used. 2. The bottom of the sheeting shall extend within 2 feet of the bottom of the excavation. If there is an indication of a possible loss of soil from behind or below the support system, sheeting must extend to the bottom of the excavation. 3. Four feet wide sheeting is required at each Vertical Shore if raveling or sloughing of the excavation face appears likely to occur. 4. Four feet wide sheeting shall be used. 5. When 4 feet horizontal spacing is exceeded, the open spaces between the sheeting must be monitored for sloughing and raveling of the excavation face. 6. The bottom hydraulic cylinder shall be a maximum of 4 feet above the bottom of the excavation. 7. Sheeting shall extend to the bottom of the excavation. COPYRIGHT, U.S.A., SPEED SHORE CORPORATION, 1995

January 1, 1995 VERTICAL SHORES Page 8 of 8 EXAMPLES OF TYPICAL INSTALLATION FIG. 1 FIG. 2 WITH SHEETING WITHOUT SHEETING FIG. 3 STACKED COPYRIGHT, U.S.A., SPEED SHORE CORPORATION, 1995

T A B U L A T E D D A T A A N D T U F F - L I T E C E R T I F I C A T I O N SERIAL NUMBER: 0-2353 MODEL: TS-0606TL4 HEIGHT = 6 feet LENGTH = 6 feet THICKNESS= 4 inches MAXIMUM LATERAL EARTH PRESSURE = 4,822 Pounds per square foot MAXIMUM DEPTH OF EXCAVATION Equivalent Weight Effect (p.c.f.) A 25 B 35 B 45 C 60 C 80 O.S.H.A. Soil Type Spreader Size = 5 inch Schedule 80 Pipe / Maximum Spreader Length = 12 feet This shield is manufactured to meet the requirements of O.S.H.A. CFR 29, Part 1926, Subpart P. This shield must be used in a manner consistent with safe working procedures, Federal, State and local regulation and manufacturer's instructions. Contact manufacturer for any non-standard use of this trench shield. GENERAL NOTES AND INSTRUCTIONS: Depth "H" (feet) 1. Contractors must assign a "competent person", knowledgeable and capable of complying with all federal regulations, state and local laws and ordinances. NOTE: For copies of applicable federal or state laws contact: Dept. of Labor, Occupational Safety and Health Division 2. A "competent person", trained and experienced in the proper use of trench shields, safe excavation practices and soil classification methods must direct and control the use of this trench shield. 3. This Tabulated Data applies to standard products manufactured exclusively by SPEED SHORE CORPORATION. This data complies with the requirements of federal O.S.H.A. CFR 29, Part 1926, Subpart P- Excavations. Information not found in this data shall be referenced by obtaining copies of the applicable Federal or State laws governing excavation 4. Modifications of this product shall be approved by the manufacturer in writing and shall accompany this Tabulated Data sheet. Any modification not specifically allowed by SPEED SHORE CORPORATION voids this data. 11.24.00 Page 1 of 1 50 50 50 50 50 SPEED SHORE CORPORATION 3330 S. Sam Houston Pkwy. East Houston, Texas 77047 Phone (713) 943-0750 Fax (713) 943-8483

T A B U L A T E D D A T A A N D T U F F - L I T E C E R T I F I C A T I O N SERIAL NUMBER: 0-2366 MODEL: TS-0810TL4 HEIGHT = 8 feet LENGTH = 10 feet THICKNESS= 4 inches MAXIMUM LATERAL EARTH PRESSURE = 1,857 Pounds per square foot MAXIMUM DEPTH OF EXCAVATION Equivalent Weight Effect (p.c.f.) A 25 B 35 B 45 C 60 C 80 O.S.H.A. Soil Type Spreader Size = 5 inch Schedule 80 Pipe / Maximum Spreader Length = 12 feet This shield is manufactured to meet the requirements of O.S.H.A. CFR 29, Part 1926, Subpart P. This shield must be used in a manner consistent with safe working procedures, Federal, State and local regulation and manufacturer's instructions. Contact manufacturer for any non-standard use of this trench shield. GENERAL NOTES AND INSTRUCTIONS: Depth "H" (feet) 1. Contractors must assign a "competent person", knowledgeable and capable of complying with all federal regulations, state and local laws and ordinances. NOTE: For copies of applicable federal or state laws contact: Dept. of Labor, Occupational Safety and Health Division 2. A "competent person", trained and experienced in the proper use of trench shields, safe excavation practices and soil classification methods must direct and control the use of this trench shield. 3. This Tabulated Data applies to standard products manufactured exclusively by SPEED SHORE CORPORATION. This data complies with the requirements of federal O.S.H.A. CFR 29, Part 1926, Subpart P- Excavations. Information not found in this data shall be referenced by obtaining copies of the applicable Federal or State laws governing excavation 4. Modifications of this product shall be approved by the manufacturer in writing and shall accompany this Tabulated Data sheet. Any modification not specifically allowed by SPEED SHORE CORPORATION voids this data. 11.24.00 Page 1 of 1 50 50 44 34 26 SPEED SHORE CORPORATION 3330 S. Sam Houston Pkwy. East Houston, Texas 77047 Phone (713) 943-0750 Fax (713) 943-8483

685 HULL ROAD, MASON, MI 48854 PHONE (517) 676-8800 MODEL: XLS-412 SERIAL NUMBER 102995 PAGE 1 OF 2 STEEL TRENCH SHIELD REFERENCE TO OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RULES AND REGULATIONS, 29 CFR, NO 209, PART 1926, SUBPART P SHIELD SIZE HEIGHT (FEET) LENGTH (FEET) PSF RATING MAXIMUM LATERAL EARTH PRESSURE CAPACITY AT TRENCH BOTTOM IN POUNDS PER SQUARE FOOT 4 12 690 LIMITATIONS IN USE OF TABLE 1. TRENCH SHIELD TO BE ASSEMBLED AND INSTALLED IN ACCORDANCE WITH MANUFACTURER S INSTRUCTIONS. (SEE PAGE-2) 2. EXCAVATION 2 FEET BELOW BOTTOM OF SHIELD IS PERMITTED WHEN NO LOSS OF SOIL FROM BEHIND OR BELOW THE BOTTOM OF SHIELD IS ENCOUNTERED. SEE PARAGRAPH 1926.652 (e)(2)(i). THE COMPETENT PERSON SHALL MAKE THE DETERMINATION FOR COMPLIANCE. SUDDEN SHIFTING OF THE SHIELD VERTICALLY SHALL BE AVOIDED. 3. DEPTH RATING IS BASED ON TEMPORARY LOADING, CONSULT MANUFACTURER IF SHIELD IS SUBJECT TO LONG TERM LOADING 4. ADDITIONAL SHIELDS MAY BE STACKED WITH NO PENALTY IN DEPTH OF CUT AS LONG AS THE RATING OF THE EACH SHIELD IS NOT EXCEEDED AT THE DEPTH IT IS USED. MANUFACTURER APPROVED STACKING METHOD MUST BE USED. 5. C-80 DOES NOT REPRESENT THE WORST POSSIBLE SOIL CONDITION. OBTAIN SITE- SPECIFIC ENGINEERING FOR EXTREMELY NON-STABLE CONDITIONS SUCH AS MARINE CLAY, PEAT, SOFT SUBMERGED AND FLOWING CLAYS, ETC. 6. ANY MODIFICATIONS OR ALTERATIONS NOT ALLOWED UNLESS APPROVED IN WRITING BY EFFICIENCY PRODUCTION, INC. 7. CONTRACTOR S COMPETENT/QUALIFIED PERSON SHALL BE RESPONSIBLE FOR MONITORING SOIL CONDITIONS AND SHALL BE RESPONSIBLE FOR COMPLIANCE WITH ALL FEDERAL, STATE AND LOCAL LAWS, RULES, AND REGULATIONS. EXAMPLES OF MAXIMUM ALLOWABLE DEPTH OF CUT (FEET) IN SOIL TYPE TO BE EXCAVATED TYPE B-45 (II) MEDIUM COHESIVE TO GRANULAR SOIL 45 PSF PER FT OF DEPTH TYPE C-60 (III) SOFT COHESIVE TO SATURATED SOIL. 60 PSF PER FT OF DEPTH TYPE C-80 (IV) SOFT SUBMERGED AND FLOWING SOIL. 80 PSF PER FT OF DEPTH 15 DESCRIPTION DESCRIPTION DESCRIPTION CLAY, WITH UNCONFINED COMPRESSIVE STRENGTH GREATER THAN 0.5 TSF BUT LESS THAN 1.5 TSF COHESIONLESS GRAVEL, SILT, SILT LOAM OR SANDY LOAM 12 SOFT COHESIVE SOIL UNCONFINED COMPRESSIVE STRENGTH GREATER THAN 0.2 TSF, BUT LESS THAN 0.5 TSF CLAY, SAND AND LOAMY SAND; SATURATED SOIL THAT IS STABLE, DRY SAND, OR DEWATERED SOILS 9 SOFT COHESIVE SOIL UNCONFINED COMPRESSIVE STRENGTH LESS THAN 0.2 TSF. FRACTURED ROCK THAT IS NOT STABLE, OR SUBMERGED SAND AND LOAMY SAND THAT IS FLOWING. (SEE NOTE 5) 8. SPREADER PINS SHALL BE 8620 COLD DRAWN 80-90 KSI MIN. YIELD AND NO MORE THAN 1/4 SMALLER THAN COLLAR AND SPREADER PIN HOLES AS MANUFACTURED BY EFFICIENCY PRODUCTION, INC. CONTINUED ON REVERSE SIDE MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING U.S. PATENT NUMBERS: 4,090,365-4,114,383-4,259,028 ONE OR MORE OF THE FOLLOWING CANADIAN PATENT NUMBERS: 1,062,683-1,062,684 CERTIFIED BY: EFFICIENCY PRODUCTION INC. COPYRIGHT: 1991 EFFICIENCY PRODUCTION INC. ALL RIGHTS RESERVED ANY USE OF THIS PRODUCT NOT SPECIFICALLY DESCRIBED ON THIS CERTIFICATE COULD CAUSE IN CAVE-IN, COLLAPSE, OR STRUCTURAL FAILURE RESULTING IN DEATH OR SERIOUS INJURY

685 HULL ROAD, MASON, MI 48854 PHONE (517) 676-8800 MODEL: SHIELD SIZE HEIGHT (FEET) XLD-816 LENGTH (FEET) 8 16 PSF RATING MAXIMUM LATERAL EARTH PRESSURE CAPACITY AT TRENCH BOTTOM IN POUNDS PER SQUARE FOOT SERIAL NUMBER 106377 PAGE 1 OF 2 STEEL TRENCH SHIELD FOAM NO FILLED REFERENCE TO OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RULES AND REGULATIONS, 29 CFR, NO 209, PART 1926, SUBPART P 1170 LIMITATIONS IN USE OF TABLE 1. TRENCH SHIELD TO BE ASSEMBLED AND INSTALLED IN ACCORDANCE WITH MANUFACTURER S INSTRUCTIONS. (SEE PAGE-2) 2. EXCAVATION 2 FEET BELOW BOTTOM OF SHIELD IS PERMITTED WHEN NO LOSS OF SOIL FROM BEHIND OR BELOW THE BOTTOM OF SHIELD IS ENCOUNTERED. SEE PARAGRAPH 1926.652 (e)(2)(i). THE COMPETENT PERSON SHALL MAKE THE DETERMINATION FOR COMPLIANCE. SUDDEN SHIFTING OF THE SHIELD VERTICALLY SHALL BE AVOIDED. 3. DEPTH RATING IS BASED ON TEMPORARY LOADING, CONSULT MANUFACTURER IF SHIELD IS SUBJECT TO LONG TERM LOADING 4. ADDITIONAL SHIELDS MAY BE STACKED WITH NO PENALTY IN DEPTH OF CUT AS LONG AS THE RATING OF THE EACH SHIELD IS NOT EXCEEDED AT THE DEPTH IT IS USED. MANUFACTURER APPROVED STACKING METHOD MUST BE USED. 5. C-80 DOES NOT REPRESENT THE WORST POSSIBLE SOIL CONDITION. OBTAIN SITE- SPECIFIC ENGINEERING FOR EXTREMELY NON-STABLE CONDITIONS SUCH AS MARINE CLAY, PEAT, SOFT SUBMERGED AND FLOWING CLAYS, ETC. 6. ANY MODIFICATIONS OR ALTERATIONS NOT ALLOWED UNLESS APPROVED IN WRITING BY EFFICIENCY PRODUCTION, INC. 7. CONTRACTOR S COMPETENT/QUALIFIED PERSON SHALL BE RESPONSIBLE FOR MONITORING SOIL CONDITIONS AND SHALL BE RESPONSIBLE FOR COMPLIANCE WITH ALL FEDERAL, STATE AND LOCAL LAWS, RULES, AND REGULATIONS. EXAMPLES OF MAXIMUM ALLOWABLE DEPTH OF CUT (FEET) IN SOIL TYPE TO BE EXCAVATED TYPE B-45 (II) MEDIUM COHESIVE TO GRANULAR SOIL 45 PSF PER FT OF DEPTH TYPE C-60 (III) SOFT COHESIVE TO SATURATED SOIL. 60 PSF PER FT OF DEPTH TYPE C-80 (IV) SOFT SUBMERGED AND FLOWING SOIL. 80 PSF PER FT OF DEPTH 26 20 15 DESCRIPTION DESCRIPTION DESCRIPTION CLAY, WITH UNCONFINED COMPRESSIVE STRENGTH GREATER THAN 0.5 TSF BUT LESS THAN 1.5 TSF COHESIONLESS GRAVEL, SILT, SILT LOAM OR SANDY LOAM SOFT COHESIVE SOIL UNCONFINED COMPRESSIVE STRENGTH GREATER THAN 0.2 TSF, BUT LESS THAN 0.5 TSF CLAY, SAND AND LOAMY SAND; SATURATED SOIL THAT IS STABLE, DRY SAND, OR DEWATERED SOILS SOFT COHESIVE SOIL UNCONFINED COMPRESSIVE STRENGTH LESS THAN 0.2 TSF. FRACTURED ROCK THAT IS NOT STABLE, OR SUBMERGED SAND AND LOAMY SAND THAT IS FLOWING. (SEE NOTE 5) 8. SPREADER PINS SHALL BE 8620 COLD DRAWN 80-90 KSI MIN. YIELD AND NO MORE THAN 1/4 SMALLER THAN COLLAR AND SPREADER PIN HOLES AS MANUFACTURED BY EFFICIENCY PRODUCTION, INC. CONTINUED ON REVERSE SIDE MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING U.S. PATENT NUMBERS: 4,090,365-4,114,383-4,259,028 ONE OR MORE OF THE FOLLOWING CANADIAN PATENT NUMBERS: 1,062,683-1,062,684 CERTIFIED BY: EFFICIENCY PRODUCTION INC. COPYRIGHT: 1991 EFFICIENCY PRODUCTION INC. ALL RIGHTS RESERVED ANY USE OF THIS PRODUCT NOT SPECIFICALLY DESCRIBED ON THIS CERTIFICATE COULD CAUSE IN CAVE-IN, COLLAPSE, OR STRUCTURAL FAILURE RESULTING IN DEATH OR SERIOUS INJURY

MODEL 685 HULL ROAD, MASON, MI 48854 PHONE (517) 676-8800 SERIAL NUMBER MHXLDW-810 1 2 4 6 6 3 REFERENCE TO OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RULES AND REGULATIONS, 29 CFR, NO 209, PART 1926, SUBPART P PAGE 1 OF 2 TRENCH SHIELD SHIELD SIZE HEIGHT LENGTH (FEET) (FEET) PSF RATING MAXIMUM LATERAL EARTH PRESSURE CAPACITY AT TRENCH BOTTOM IN POUNDS PER SQUARE FOOT MAXIMUM ALLOWABLE DEPTH OF CUT (FEET) D SOIL TYPE TO BE EXCAVATED TYPE B TYPE C-60 TYPE C-80 MEDIUM COHESIVE TO SOFT COHESIVE TO SOFT COHESIVE TO GRANULAR SOIL. 45 PSF SUBMERGED SOIL. 60 PSF SUBMERGED SOIL. 80 PSF PER FOOT OF DEPTH. PER FOOT OF DEPTH. PER FOOT OF DEPTH. 8 1 0 1 8 3 0 4 1 3 1 2 3 LIMITATIONS IN USE OF TABLE 1. TRENCH SHIELD TO BE ASSEMBLED AND INSTALLED AS SHOWN AND IN ACCORDANCE WITH MANUFACTURER S INSTRUCTIONS. 2. EXCAVATION 2 FEET BELOW BOTTOM OF SHIELD IS PERMITTED WHEN NO LOSS OF SOIL FROM BEHIND OR BELOW THE BOTTOM OF SHIELD IS ENCOUNTERED. SEE PARAGRAPH 1926.652 (e)(2)(i). THE COMPETENT PERSON SHALL MAKE THE DETERMINATION FOR COMPLIANCE. SUDDEN SHIFTING OF THE SHIELD VERTICALLY SHALL BE AVOIDED. 3. CONSULT MANUFACTURER WHEN RESTRICTION ON NOTE 2 IS NOT MET. 4. ADDITIONAL SHIELDS MAY BE STACKED WITH NO PENALTY IN DEPTH OF CUT AS LONG AS THE RATING OF THE BOTTOM SHIELD IS NOT EXCEEDED. 5. DEPTHS OF CUTS SHOWN ARE BASED ON EXAMPLES OF VARIOUS SOIL CONDITIONS. VERIFYACTUAL SOIL PRESSURES PRIOR TO EACH USE. DESCRIPTION Clay, with Unconfined Compressive Strength Greater than.5 TSF But Less than 1.5 TSF Cohesionless Gravel, Silt, Slit Loam or Sandy Loam. DESCRIPTION Soft Cohesive Soil Unconfined Compressive Strength Less than.5 TSF Gravel, Sand and Loamy Sand; Submerged Soil or fractured Rock that is not Stable. LAYBACK AND SLOPE AT A MINIMUM OF 1 TO 1 FOR B-SOILS, OR 1.5 TO 1 FOR C SOILS D DESCRIPTION Soft Cohesive Soil Unconfined Compressive Strength Less than.5 TSF Gravel, Sand and Loamy Sand; Submerged Soil or fractured Rock that is not Stable. 1-6 MIN. 6. ANY MODIFICATIONS OR ALTERATIONS NOT ALLOWED UNLESS APPROVED IN WRITING BY EFFICIENCY PRODUCTION, INC. 7. CONTRACTOR S COMPETENT/QUALIFIED PERSON SHALL BE RESPONSIBLE FOR MONITORING SOIL CONDITIONS AND SHALL BE RESPONSIBLE FOR COMPLIANCE WITH ALL FEDERAL, STATE AND LOCAL RULES AND REGULATIONS. 8. SPREADER PINS SHALL BE AISI C-1018 60-75 KSI MIN. YIELD AND NO MORE THAN 1/4 SMALLER THAN COLLAR AND SPREADER PIN HOLES AS MANUFACTURED BY EFFICIENCY PRODUCTION, INC. B-SOILS 1 (1 TO 1 SLOPE) 1 C-SOILS 1 (1.5 TO 1 SLOPE) 1.5 NOTE 2 CONTINUED ON REVERSE SIDE CERTIFIED BY: EFFICIENCY PRODUCTION, INC. COPYRIGHT: 1991 EFFICIENCY PRODUCTION, INC. ALL RIGHTS RESERVED MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING U.S. PATENT NUMBERS; 4,090,365-4,114,383-4,259,028 ONE OR MORE OF THE FOLLOWING CANADIAN PATENT NUMBERS: 1,062,683-1,062,684 USE THIS PRODUCT ONLY IN ACCORDANCE WITH APPLICABLE FEDERAL, STATE, OR LOCAL LAWS Any use of this product not specifically described on this certificate could cause cave-in, collapse, or structural failure resulting in death or serious injury.

685 HULL ROAD, MASON, MI 48854 PHONE (517) 676-8800 MODEL: MHXLSW-410 SERIAL NUMBER 131164 PAGE 1 OF 2 STEEL TRENCH SHIELD SHIELD SIZE HEIGHT (FEET) REFERENCE TO OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RULES AND REGULATIONS, 29 CFR, NO 209, PART 1926, SUBPART P LENGTH (FEET) 4 10 PSF RATING MAXIMUM LATERAL EARTH PRESSURE CAPACITY AT TRENCH BOTTOM IN POUNDS PER SQUARE FOOT LIMITATIONS IN USE OF TABLE 1. TRENCH SHIELD TO BE ASSEMBLED AND INSTALLED IN ACCORDANCE WITH MANUFACTURER S INSTRUCTIONS. (SEE PAGE-2) 600 13 2. EXCAVATION 2 FEET BELOW BOTTOM OF SHIELD IS PERMITTED WHEN NO LOSS OF SOIL FROM BEHIND OR BELOW THE BOTTOM OF SHIELD IS ENCOUNTERED. SEE PARAGRAPH 1926.652 (e)(2)(i). THE COMPETENT PERSON SHALL MAKE THE DETERMINATION FOR COMPLIANCE. SUDDEN SHIFTING OF THE SHIELD VERTICALLY SHALL BE AVOIDED. 3. DEPTH RATING IS BASED ON TEMPORARY LOADING, CONSULT MANUFACTURER IF SHIELD IS SUBJECT TO LONG TERM LOADING 4. ADDITIONAL SHIELDS MAY BE STACKED WITH NO PENALTY IN DEPTH OF CUT AS LONG AS THE RATING OF THE EACH SHIELD IS NOT EXCEEDED AT THE DEPTH IT IS USED. MANUFACTURER APPROVED STACKING METHOD MUST BE USED. 5. C-80 DOES NOT REPRESENT THE WORST POSSIBLE SOIL CONDITION. OBTAIN SITE- SPECIFIC ENGINEERING FOR EXTREMELY NON-STABLE CONDITIONS SUCH AS MARINE CLAY, PEAT, SOFT SUBMERGED AND FLOWING CLAYS, ETC. 6. ANY MODIFICATIONS OR ALTERATIONS NOT ALLOWED UNLESS APPROVED IN WRITING BY EFFICIENCY PRODUCTION, INC. 7. CONTRACTOR S COMPETENT/QUALIFIED PERSON SHALL BE RESPONSIBLE FOR MONITORING SOIL CONDITIONS AND SHALL BE RESPONSIBLE FOR COMPLIANCE WITH ALL FEDERAL, STATE AND LOCAL LAWS, RULES, AND REGULATIONS. EXAMPLES OF MAXIMUM ALLOWABLE DEPTH OF CUT (FEET) IN SOIL TYPE TO BE EXCAVATED TYPE B-45 (II) MEDIUM COHESIVE TO GRANULAR SOIL 45 PSF PER FT OF DEPTH TYPE C-60 (III) SOFT COHESIVE TO SATURATED SOIL. 60 PSF PER FT OF DEPTH TYPE C-80 (IV) SOFT SUBMERGED AND FLOWING SOIL. 80 PSF PER FT OF DEPTH 10 DESCRIPTION DESCRIPTION DESCRIPTION CLAY, WITH UNCONFINED COMPRESSIVE STRENGTH GREATER THAN 0.5 TSF BUT LESS THAN 1.5 TSF COHESIONLESS GRAVEL, SILT, SILT LOAM OR SANDY LOAM SOFT COHESIVE SOIL UNCONFINED COMPRESSIVE STRENGTH GREATER THAN 0.2 TSF, BUT LESS THAN 0.5 TSF CLAY, SAND AND LOAMY SAND; SATURATED SOIL THAT IS STABLE, DRY SAND, OR DEWATERED SOILS 8 SOFT COHESIVE SOIL UNCONFINED COMPRESSIVE STRENGTH LESS THAN 0.2 TSF. FRACTURED ROCK THAT IS NOT STABLE, OR SUBMERGED SAND AND LOAMY SAND THAT IS FLOWING. (SEE NOTE 5) 8. SPREADER PINS SHALL BE 8620 COLD DRAWN 80-90 KSI MIN. YIELD AND NO MORE THAN 1/4 SMALLER THAN COLLAR AND SPREADER PIN HOLES AS MANUFACTURED BY EFFICIENCY PRODUCTION, INC. CONTINUED ON REVERSE SIDE MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING U.S. PATENT NUMBERS: 4,090,365-4,114,383-4,259,028 ONE OR MORE OF THE FOLLOWING CANADIAN PATENT NUMBERS: 1,062,683-1,062,684 CERTIFIED BY: EFFICIENCY PRODUCTION INC. COPYRIGHT: 1991 EFFICIENCY PRODUCTION INC. ALL RIGHTS RESERVED ANY USE OF THIS PRODUCT NOT SPECIFICALLY DESCRIBED ON THIS CERTIFICATE COULD CAUSE IN CAVE-IN, COLLAPSE, OR STRUCTURAL FAILURE RESULTING IN DEATH OR SERIOUS INJURY

T A B U L A T E D D A T A A N D M A N H O L E S H I E L D C E R T I F I C A T I O N SERIAL NUMBER: 5-2455 MODEL: MHS- 0810-DW-RC HEIGHT = 8 feet SQUARE = 10 feet THICKNESS= 4 inches MAXIMUM LATERAL EARTH PRESSURE = 2,238 Pounds per square foot O.S.H.A. Soil Type A B B C C MAXIMUM DEPTH OF EXCAVATION Equivalent Weight Effect (p.c.f.) 25 35 45 60 80 Depth "H" (feet) 50 50 50 40 31 This shield is manufactured to meet the requirements of O.S.H.A. CFR 29, Part 1926, Subpart P. This shield must be used in a manner consistent with safe working procedures, Federal, State and local regulation and manufacturer's instructions. Contact manufacturer for any non-standard use of this manhole shield. GENERAL NOTES AND INSTRUCTIONS: 1. Contractors must assign a "competent person", knowledgeable and capable of complying with all federal regulations, state and local laws and ordinances. NOTE: For copies of applicable federal or state laws contact: Dept. of Labor, Occupational Safety and Health Division 2. A "competent person", trained and experienced in the proper use of trench shields, safe excavation practices and soil classification methods must direct and control the use of this trench shield. 3. This Tabulated Data applies to standard products manufactured exclusively by SPEED SHORE CORPORATION. This data complies with the requirements of federal O.S.H.A. CFR 29, Part 1926, Subpart P- Excavations. Information not found in this data shall be referenced by obtaining copies of the applicable Federal or State laws governing excavation 4. Modifications of this product shall be approved by the manufacturer in writing and shall accompany this Tabulated Data sheet. Any modification not specifically allowed by SPEED SHORE CORPORATION voids this data. 11.24.00 Page 1 of 1 SPEED SHORE CORPORATION 3330 S. Sam Houston Pkwy. East Houston, Texas 77047 Phone (713) 943-0750 Fax (713) 943-8483

T A B U L A T E D D A T A A N D T U F F - L I T E C E R T I F I C A T I O N SERIAL NUMBER: 99-2627 MODEL: TS-0624TL6 HEIGHT = 6 feet LENGTH = 24 feet THICKNESS= 6 inches MAXIMUM LATERAL EARTH PRESSURE = 959 Pounds per square foot MAXIMUM DEPTH OF EXCAVATION Equivalent Weight Effect (p.c.f.) A 25 B 35 B 45 C 60 C 80 O.S.H.A. Soil Type Spreader Size = 8 inch Schedule 80 Pipe / Maximum Spreader Length = 20 feet This shield is manufactured to meet the requirements of O.S.H.A. CFR 29, Part 1926, Subpart P. This shield must be used in a manner consistent with safe working procedures, Federal, State and local regulation and manufacturer's instructions. Contact manufacturer for any non-standard use of this trench shield. GENERAL NOTES AND INSTRUCTIONS: Depth "H" (feet) 1. Contractors must assign a "competent person", knowledgeable and capable of complying with all federal regulations, state and local laws and ordinances. NOTE: For copies of applicable federal or state laws contact: Dept. of Labor, Occupational Safety and Health Division 2. A "competent person", trained and experienced in the proper use of trench shields, safe excavation practices and soil classification methods must direct and control the use of this trench shield. 3. This Tabulated Data applies to standard products manufactured exclusively by SPEED SHORE CORPORATION. This data complies with the requirements of federal O.S.H.A. CFR 29, Part 1926, Subpart P- Excavations. Information not found in this data shall be referenced by obtaining copies of the applicable Federal or State laws governing excavation 4. Modifications of this product shall be approved by the manufacturer in writing and shall accompany this Tabulated Data sheet. Any modification not specifically allowed by SPEED SHORE CORPORATION voids this data. 11.24.00 Page 1 of 1 38 28 23 18 14 SPEED SHORE CORPORATION 3330 S. Sam Houston Pkwy. East Houston, Texas 77047 Phone (713) 943-0750 Fax (713) 943-8483