CBD Basis of Design Final.pdf

Basis of Design for

In-House Design-Bid-Build Plans and Specifications

PROJECT TITLE: CBD: Demo Above Ground Storage Tanks and Pump Houses

WORK ORDER NUMBER: 1617903

PREPARED BY: John C Jones

DATE: 29 May 2019

CBD: Demo Above Ground Storage Tanks and Pump Houses Basis of Design At Chesapeake Beach Detachment 29 May 2019 Chesapeake Beach, MD

CBD: Demo Above Ground Storage Tanks and Pump Houses At Chesapeake Beach Detachment

BASIS OF DESIGN

TABLE OF CONTENTS

1. INTRODUCTION

1.1. Codes, Standards and References

2. CIVIL

2.1. Existing Site Conditions

2.2. Proposed Work

3. ENVIRONMENTAL

3.1. Tanks Certified Clean ……

3.2. Soil Disturbance and MDE

4. Mechanical

4.1 New Pump…………

5. Electrical

1. Introduction

The intent of this project is to demolish seven (7) aboveground fuel storage tanks, two AFFF waste water tanks, and two pump houses. One additional pump house is to be gutted and repurposed. These tanks, pumps and pump houses were previously used for the fire testing program conducted by Code 6180. Code 6180 concurs that these facilities are no longer required and can be demolished. The building numbers are as follows: There are seven fuel tanks (C317, C318, C319, C320, C321, C322, C323), two fuel pump houses (C273, C315), two sprinkler wastewater storage tanks (C305, C306), and one wastewater pump house (C303).

Site Map:

Figure 1 – Site Map

1 Codes, Standards, and References

The following codes and standards will be used for design:

1.1. UFC 1-300-09N: Navy and Marine Corps Design Procedures, 1 May 2014; Change 4, 14 June 2018

1.2. UFC 3-201-01 Civil Engineering; 1 April 2018

1.3. Maryland Stormwater Management and Erosion and Sediment Control Guidelines for

States and Federal Projects

1.4. Code of Maryland (COMAR) Title 26 – Environment

1.5. MDE Oil Operations Permit

1.6 API Std 2015, API Publ 2202, NEPA 326, API RP 500, API RP 2003

1.6. Tank design, construction, installation, operation and maintenance shall meet all requirements of Federal, state of Maryland, and UFC as well as safety regulations of OSHA, NFPA, and etc.

1. UFC 3-460-01 Design: Petroleum Fuel Facilities, with Change 3, 05-09-2018

2. UFC 3-460-03 O&M: Maintenance of Petroleum Systems, with Change 3, 05- 09-2018

3. UL-142: Underwriters Laboratories Inc. Steel Aboveground Tanks for Flammable and Combustible liquids.

4. ASTM D4814-19: Automotive Spark-Ignition Engine Fuel, 01-01-2019

5. NFPA 77, Recommended Practice on Static Electricity

6. NFPA 70E, Standard for Electrical Safety in the Workplace

7. Occupational Safety and Health Administration (OSHA) regulations

8. USACE EM 385-1-1

The following reference drawings will be used for design:

2.1.5. “Upgrade Fuel Storage For Fire Test” NAVFAC Dwg Nos. 3139241 to 3139253

2.1.6. “Waste Water Stoage Facility, Fire Test Facility, CBD” NAVFAC Drawing Nos.

31358220 to 3135230

2. Civil

2.2. Existing Site Conditions

The project site is located on the Western side of the CBD across Bayside Road and East of the Fire Testing Deck. Site access for construction vehicles and personnel is through Gate 3. There are two primary work sites: The fuel tank area and the sprinkler waste tank area. Existing data was obtained from onsite measurements, existing GIS data, and satellite imagery.

The fuel tank area is supported by a large concrete structure with two distinct elevations, and upright concrete walls that create a barrier around the tanks. There is an existing concrete trench with steel plates for cover which houses the fuel pipe lines that travel to a masonry pump house (C315). Adjacent to the masonry pump house is a corrugated metal pump house (C273).

The sprinkler waste water tank area is surrounded by an earth berm, which keeps stormwater contained within the enclosure. The two tanks sit on three footers each. The pipe lines that feed these waste tanks travel underground to the pump house (C303). The electric is fed from an existing transformer southeast of the tanks.

Figure 2 – Satellite Image

Figure 3 - Fuel Tanks Figure 4 - AFFF Waste Water Tanks

2.3 Proposed Work

Proposed Work for Fuel Tanks:

- Mark utilities and coordinate dig permit for work;

- Removal of fuel from existing fuel tanks. See Table on Sheet C-102 for remaining fuel amounts. For bidding purposes refer to Bid Schedule for fuel types and quantities;

- Clean tanks per federal and state codes referenced prior to demolition. The fuel tanks are required to emptied and cleaned per specs and be certified cleaned with documentation provided to the Government;

- Demo/modify electric distribution per Electrical Sheets indicated on drawings.

- Remove all associated fuel piping, electric, and pumps from masonry pump house

(C315), and clean.

- Demolition of all fuel tanks (total 7). Sizes provided on Sheet C-102;

- Demolition of masonry and corrugated metal pump house (C273). All material in building to be removed by NRL;

- Demolition of northern portion of concrete slab supporting fuel tanks C321, C322, and C323. Portion to remain. See Sheet C-102 and C-104;

- Demolish concrete trench indicated on C-102.

- Provide fill to provide positive drainage. For bidding purposes, assume 70 CY of common fill (63 CY compacted in place).

- Replace roof and door on masonry pump house (C315). Enclose building envelope in rear of building with masonry to match existing. See Sheet A-101;

- Existing light pole indicated on drawings will be demolished due to proximity of demo;

- Modification of southern half of fuel tank concrete slab to include removal of eastern parapet wall, and the installation of a concrete ramp;

- Provide and install a stand-alone above ground double wall 1000 gal UL-142 gasoline tank, equipped with standard factory installed dispensing pump package.

Details on Sheet M-101. Install new pump on existing concrete slab. Install direct buried electric wiring from panel, to new tank/pump location indicated on drawings.

Proposed Work for Sprinkler Wastewater Tanks includes:

- Mark utilities and coordinate dig permit for work;

- Demo/modify electric distribution per Electrical Sheets indicated on drawings.

- Remove all tank associated fuel piping, electric, and pumps from masonry pump house (C303), and clean.

- Clean tanks the sprinkler wastewater tanks. These tanks have been previously cleaned by Clean Harbors Environmental Services, Inc.

- Demolish sprinkler wastewater tanks (total 2 - 12,000 Gallon).

- Remove all associated pumps and piping from holding pit to sprinkler wastewater tanks. Cap at pump house C303 with non-shrink grout or equivalent measure.

- Holding Tank adjacent to pump house to be drained by NRL;

- Cap pipes exiting holding pit to pump house with non-shrink grout or equivalent measure;

- Provide fill to provide positive drainage. For bidding purposes, assume 20 CY of common fill (18 CY compacted in place).

- Grade northwest portion of earth berm surrounding tanks, to provide positive drainage. See Sheet C-105. 25 linear feet of earth berm to be removed. Remove post indicator valve and piping at northwest portion of earth berm;

Figure 5 – Remaining Fuel in Tanks

Figure 6 – Proposed Work to Concrete Slab Supporting Fuel Tanks

3. Environmental

1. Tanks Certified Clean – The fuel tanks are required to be certified cleaned, and documentation of that certificate must be provided to the Government. NRL has stated that the sprinkler waste water tanks have been certified cleaned in the past. NAVFAC requires this documentation.

2. Soil Disturbance and MDE – MDE permits are required if a land improvement exceeds 5,000 SF and/or 100 CY of soil disturbance. This project consists of two sites. Construction to be in sequence. The first site must be fully stabilized before starting work on the second site. The sequencing of this work will be included in the Specifications under Work Restrictions. Each site is below the threshold requiring an MDE permit. NEPA form has been submitted to NRL Environmental.

4. Mechanical

Provide and install a stand-alone above ground double wall 1000gal UL-142 gasoline tank, equipped with standard factory installed gasoline pump and dispenser package with 115Vac power, filter, meter, and 12ftx3/4” hose. Included in the package is a 5 gallon spill prevention fill box and venting on primary and secondary containment tanks, level gauges and sight glass leak indicators. Outdoor aboveground double wall unitized steel tank surrounded on the sides and bottom by an air testable secondary containment tank that provides 110% containment of the primary gallon capacity. The cavity space between the two tanks is sealed against rain. The top of the primary tank is furnished with five (5) female forged steel threaded pipe connections for optional accessories (fill gauge, vent, spare and emergency vent). The top of the secondary containment is furnished with one 2” PVC plugged fitting for visual inspection of the cavity space.

Unit is furnished with lifting lugs and 2 ½” high by 7” wide steel support channels. Gasoline dispenser has option with manual overfill drain-back valve and whistle type alarm. The tanks are constructed entirely from carbon steel. This tank shall be able to store a gasoline and/or a gasoline-oxygenate blend. This tank will be mounted on existing concrete slab on Chesapeake Beach Detachment. Entire tank shall be electrically grounded. All weather exposed tank exteriors are prepared in accordance with SSPC SP-1 and NACE 1 Standards. Corrosion protection is provided by PPG high performance industrial quality performance coatings. Ferrous surfaces are coated with two-component polyamide-epoxy mastic applied to a dry film thickness (DFT) of 4 to 7 mils. Top coat is two-component white acrylic aliphatic urethane applied to 2 to 3 mils DFT.

Tanks will be labeled in accordance with OSHA & NFPA requirements. Since gasoline freezing temperature is from -40oC to -50oC or from -40oF to -58oF, there is no required free-protection for gasoline with weather condition in Maryland. Tank will have fuel high level and low level equipped with audible alarm. Primary tank has 2" normal operating vent and 6" emergency pressure relief vent and the secondary has 1-1/4" normal operating vent and 4" emergency pressure relief vent. Float actuated level switch (high/low) and leak detection switch will be hooked up to an audible and visual alarm box. This alarm box will be installed on a mounting surface that are mounted on the tank and be powered by 120VAC.

Design standard and application codes:

Basis of Design Manufacturers:

Safe-t-tank.com Phone: 1(800)536-8910

5. Electrical

1. Existing Conditions - Power from the existing 75KVA transformer is routed through underground ductbank to power panel MCP at Building C303 (known as the Waste Water Pump House). It is then routed via underground duct bank to Panel P1 which is at the exterior backpanel. Panel P1 services all of the individual loads in Building C315 (the newer fuel pump house). It also feeds Building 29. All of the equipment on the backpanel is associated with C315 other than the circuits for the tank area lighting and the feeder for Building 29.

2. Proposed Condition – Maintain Building C303 in order to maintain electrical supply to all live buildings and equipment, and the pump house to remain. Establishing a small service in that building with electrical panel that makes the building usable in the future without requiring new circuits be run from an exterior power panel not attached to the building. Route electric for the new pump via direct buried line.