ADDENDUM NO. THREE (3) INSTALL BACKUP GENERATOR TERMINAL BUILDING SALISBURY-OCEAN CITY: WICOMICO REGIONAL AIRPORT SALISBURY, MARYLAND

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1 ADDENDUM NO. THREE (3) INSTALL BACKUP GENERATOR TERMINAL BUILDING SALISBURY, MARYLAND Delta Project No MARCH 15, 2017 From: To: Delta Airport Consultants, Inc Farrar Court, Suite 100 Richmond, Virginia All Plan Holders of Record This Addendum is hereby made a part of the contract documents and specifications of the above referenced project. All other requirements of the original specification shall remain in effect in their respective order. Acknowledge receipt of this addendum by inserting its number and date in the proposal form. STATEMENT OF WORK 1. REVISE the first sentence of the Introduction to the following: The Salisbury-Ocean City: Wicomico Regional Airport (SBY) issues this Request for Bid for a diesel fueled Standby Generator System REVISE Fuel Supply paragraph to the following: Fuel Supply. The generator shall be supplied by a double wall diesel fuel tank either integrated with the generator or standalone. The fuel tank size shall be sufficient to supply enough fuel for a 72-hour duration. The fuel transfer system shall include all piping (double wall if tank is not integrated), pumps, meters, valves, alarms, etc. as necessary for a complete generator system that meets current code. 3. ADD to the end of Generator Foundation the following sentence: The contactor shall provide a foundation design sealed by a Maryland Registered Professional Engineer. 1

2 ADDENDUM NO. THREE (3) 3. REVISE the second to last paragraph under Project Overview to read... for a period of 1 year after final acceptance... ATTACHMENT A 4. REPLACE Sheet A3 with attached revised Sheet A3, Addendum 3 ATTACHMENTS 1. Revised Plan Sheet A3 2. Questions and Answers END OF ADDENDUM NO. THREE (3) 2

3 GENERAL PATHWAY FOR GENERATOR POWER 100' TUG OPENING IN-BOUND BAGGAGE 146 MATERIAL STORAGE BUILDING OPTION 1 GENERATOR RADIO & SECURITY CAMERA TOWER (CANNOT BE RELOCATED) PROPANE TANKS COOLING TOWER TRANSFORMER ATS SWITCH LOCATED ON EXTERIOR WALL. ADDITIONAL ROOM AVAILABLE INSIDE ELECTRICAL ROOM IF REQUIRED. OPTION 3 US AIR DISCONNECTS 10' 16' MECH RM 143 7' ELEC RM 142 DISH ANTENNA (CAN BE RELOCATED) MECHANICAL UNITS NOTE: SHALL BE CHOSEN BY AIRPORT BASED ON FINAL DIMENSIONS OF GENERATOR SELECTED. CONTRACTOR STAGING AREA CSA THE CONTRACTOR STAGING AREA IS SUBJECT TO SEARCH AT ANY TIME. ALL TOOLS AND EQUIPMENT MUST BE SECURE AT ALL TIMES. THE AIRPORT RESERVES THE RIGHT TO RELOCATE THE STAGING AREA FOR ANY REASON. A NEW WILL BE IN THE GENERAL AREA INDICATED AND COORDINATED WITH THE AIRPORT ADMINISTRATION AND THE TSA. OPTION 2 NEW DIESEL GENERATOR, 225Kw G 225A NEW 200A SERVICE ENTRANCE RATED AUTOMATIC TRANSFER SWITCH FOR US AIR NEW 1200A SERVICE ENTRANCE RATED AUTOMATIC TRANSFER SWITCH FOR TERMINAL N:\15065\04 CAD\15065-PLAN.dwg, GEN, 3/15/2017 2:28:29 PM, pjw DRAWING: PLAN.dwg LAYOUT: GEN XREFS: x_grid.dwg IMAGES: 3 ADDENDUM NO. THREE (3) PJW JCL 3/15/17 2 ADDENDUM NO. TWO (2) PJW JCL 3/3/17 1 ADDENDUM NO ONE (1) PJW JCL 2/20/17 NO. REVISIONS BY APP. DATE BURGESS ENGINEERING INSERT SUBCONSULTANT'S 3900 Westerre Parkway, Suite 300 Richmond, VA P: LOGO IN THIS SPACE Airfield Lighting & NavAid Design UTILITY TRANSFORMER NOTE: The information provided in this diagram is a guideline only. With the Airports' approval, the Contractor is responsible for the final determination of all materials, supplies, services, engineering, transportation and equipment requirements including, but not limited to: cables, conduits, supports and equipment. M M ONE LINE DIAGRAM NOT TO SCALE DELTA AIRPORT CONSULTANTS, INC Farrar Court, Suite 100 Richmond, Virginia phone: (804) fax: (804) NEW SERVICE ENTRANCE RATED C.B. DISCONNECT FOR TERMINAL TERMINAL MAIN PANELBOARD 1200A 3P SWITCH ATTACHMENT 1 ADDENDUM 3 NEW SERVICE ENTRANCE RATED C.B. DISCONNECT FOR US AIR US AIR PANELBOARD 200A 3P SWITCH INSTALL BACKUP GENERATOR GENERAL SITE PLAN AND ONE LINE DIAGRAM AIP NO. JOB NO. NON-AIP DRAWN BY: SHEET PJW DESIGNED BY: JCL / DAB SCALE: DATE: 1/4" = 1' JANUARY 2017 A3

4 ATTACHMENT TWO (2) Addendum 3 SALISBURY, MARYLAND QUESTIONS AND ANSWERS 1. QUESTION: When running conduit from Generator to ATS and Sub Panels, can we utilize the existing barrier wall that has conduit running to the Electrical closet? No. 2. QUESTION: Do we have to trench from new generator pad to ATS and Electrical Sub Panels? Yes, see revised plan sheet A3, part of Addendum QUESTION: Is the Diesel Generator still an option? Generator shall be diesel. Propane is no longer an option or desired. 4. QUESTION: In Addendum No. Two, dated March 3 under the SOW #2 it states the Airport desires not less than a standby rating of 225 KW and #4 of the SOW states NEW Propane Generator 200 KW to 225KW. If you want standby rating of 225 KW with a Propane system, you would have to size a 300 to 350 KW Generator to give you the 225 KW standby. Provide a diesel generator with not less than a 225kW standby rating 5. QUESTION: We want to price either the 225 KW or a 350 KW unit. Should we price a 200 to 225 KW unit? OR the 300 to 350 KW unit to meet the standby requirements? The contractor shall provide a generator that provides not less than a 225 KW standby rating. 6. QUESTION: The revised generator intent section states that the Airport desires a standby rating of 225 KW. Does the Airport still desire 25% growth or have they included it? If it is determined that a larger KW rating is required, would that become an extra? 25% growth is no longer required 7. QUESTION: On drawing A3, two antennae are shown as being permissible to be relocated. 1.) Who would be responsible for the relocation if necessary? 2.) New locations should be approved by Airport? Antenna will be moved by the Airport only if necessary. ATTACHMENT TWO 1

5 ATTACHMENT TWO (2) Addendum 3 8. QUESTION: Addendum #1 states to use location #1 on Drawing A3. Drawing A3 also shows one antenna that cannot be moved. 1.) Would new generator cause any negative interference to that antenna? 2.) Are there any disturbances required by antenna to be considered? There are no concerns with interference nor disturbances with antenna. 9. QUESTION: This generator is described as a stand by generator. Is this generator required to be a life safety generator? No. 10. QUESTION: Original document states generator to have sound attenuated enclosure. 1.) Are there any sound level requirements for enclosure or for emissions? 2.) Is there a list of acceptable manufacturers? 3.) What is minimum run time required? 1. Generator sound level requirements should comply with OSHA standards listed below. However, more stringent sound restrictions may be required to meet the functional requirements of the occupied spaces. The generator location is adjacent to the outdoor baggage handling area. Frequency Band (Hz) Maximum Acceptable Sound Levels (Decibels) Industrial , ,200-2, ,400-4, ,800-10, Emissions standards shall meet all applicable federal, state, and local requirements. 2. There is no specific list of manufacturers. 3. See revision to Fuel Supply, Addendum 3. ATTACHMENT TWO 2