Document Format Revision (6/1/10)) SCOPE OF WORK BASEMENT WATER INFILTRATION REPAIR State House Annex East Wing Trenton, Mercer County, N.J. PROJECT NO. A1122-00 STATE OF NEW JERSEY Honorable Chris Christie, Governor Honorable Kim Guadagno, Lt. Governor DEPARTMENT OF THE TREASURY Andrew P. Sidamon-Eristoff, Treasurer DIVISION OF PROPERTY MANAGEMENT AND CONSTRUCTION Steven Sutkin, Director Date: July 7, 2011
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Document Format Revision (6/1/10))
SCOPE OF WORK
BASEMENT WATER INFILTRATION REPAIR
State House Annex East Wing Trenton, Mercer County, N.J.
PROJECT NO. A1122-00
STATE OF NEW JERSEY
Honorable Chris Christie, Governor
Honorable Kim Guadagno, Lt. Governor
DEPARTMENT OF THE TREASURY Andrew P. Sidamon-Eristoff, Treasurer
DIVISION OF PROPERTY MANAGEMENT AND CONSTRUCTION
Steven Sutkin, Director
Date: July 7, 2011
PROJECT NAME: Basement Water Infiltration Repair
PROJECT LOCATION: State House Annex East Wing
PROJECT NO: A1122-00
DATE: July 7, 2011
PAGE 2
TABLE OF CONTENTS
SECTION PAGE
I. OBJECTIVE ...........................................................................................7
II. CONSULTANT QUALIFICATIONS ..................................................7
A. CONSULTANT & SUB-CONSULTANT PRE-QUALIFICATIONS
III. PROJECT BUDGET ..............................................................................7
A. CONSTRUCTION COST ESTIMATE (CCE)
B. CURRENT WORKING ESTIMATE (CWE)
C. COST ESTIMATING
D. CONSULTANT'S FEES
IV. PROJECT SCHEDULE .........................................................................8
A. SCOPE OF WORK DESIGN & CONSTRUCTION SCHEDULE
B. CONSULTANT'S PROPOSED DESIGN & CONSTRUCTION SCHEDULE
C. CONSULTANT DESIGN SCHEDULE
D. BID DOCUMENT CONSTRUCTION SCHEDULE
E. CONTRACTOR CONSTRUCTION PROGRESS SCHEDULE
V. PROJECT SITE LOCATION & TEAM MEMBERS ..................... 10
A. PROJECT SITE ADDRESS
B. PROJECT TEAM MEMBER DIRECTORY
1. NJBA Representative
2. Client Agency Representative
VI. PROJECT DEFINITION .................................................................... 12
A. BACKGROUND
B. DESCRIPTION OF THE BUILDING
PROJECT NAME: Basement Water Infiltration Repair
PROJECT LOCATION: State House Annex East Wing
PROJECT NO: A1122-00
DATE: July 7, 2011
PAGE 3
VII. CONSULTANT DESIGN RESPONSIBILITIES ............................. 13
A. WATER INFILTRATION REPAIR ITEMS
1. Phase II Repairs
2. Phase III Repairs
B. WATER INFILTRATION REPAIR DESIGN CRITERIA
1. Underground Utilities
2. Excavation
3. Underpin Footing
4. Masonry Repairs
5. Waterproffing
6. Unit Pricing
C. CONTRACTORS USE OF THE PREMISES
1. Criminal History Record Check
2. Hours of Construction
3. Site Provisions
4. Project Directory
5. Security
6. Site Safety
7. Demolition
8. Finishes
D. SPECIAL PRESENTATION
E. GENERAL DESIGN OVERVIEW
1. Design Detail
2. Specification Format
F. PROJECT COMMENCEMENT
1. Project Directory
2. Site Access
3. Project Coordination
4. Existing Documentation
5. Scope of Work
6. Project Schedule
G. BUILDING & SITE INFORMATION
1. Building Classification
2. Building Block & Lot Number
3. Building Site Plan
4. Site Location Map
H. DESIGN MEETINGS & PRESENTATIONS
1. Design Meetings
2. Design Presentations
I. WARRANTY
PROJECT NAME: Basement Water Infiltration Repair
PROJECT LOCATION: State House Annex East Wing
PROJECT NO: A1122-00
DATE: July 7, 2011
PAGE 4
VIII. CONSULTANT CONSTRUCTION RESPONSIBILITIES ............ 21
A. GENERAL CONSTRUCTION ADMINISTRATION OVERVIEW
B. PRE-BID MEETING
C. BID OPENING
D. POST BID REVIEW MEETING, RECOMMENDATION FOR AWARD
1. Post Bid Review
2. Review meeting
3. Substitutions
4. Schedule
5. Performance
6. Superintendent
7. Letter of Recommendation
8. Conformed Drawings
E. DIRECTOR'S HEARING
F. CONSTRUCTION JOB MEETINGS, SCHEDULES, LOGS
1. Meetings
2. Schedules
3. Submittal Log
G. CONSTRUCTION SITE ADMINISTRATION SERVICES
H. SUB-CONSULTANT PARTICIPATION
I. DRAWINGS
1. Shop Drawings
2. As-Built & Record Set Drawings
J. CONSTRUCTION DEFICIENCY LIST
K. INSPECTIONS: SUBSTANTIAL & FINAL COMPLETION
L. CLOSE-OUT DOCUMENTS
M. CLOSE-OUT ACTIVITY TIME
N. TESTING, TRAINING, MANUALS, AND ATTIC STOCK
1. Testing
2. Training
3. Operation and Maintenance Manuals
4. Attic Stock
O. CHANGE ORDERS
1. Consultant
2. Contractor
3. Recommendation for Award
4. Code Review
5. Cost Estimate
6. Time Extension
7. Submission
8. Meetings
9. Consultant Fee
PROJECT NAME: Basement Water Infiltration Repair
PROJECT LOCATION: State House Annex East Wing
PROJECT NO: A1122-00
DATE: July 7, 2011
PAGE 5
IX. PERMITS & APPROVALS ................................................................ 32
A. REGULATORY AGENCY PERMITS
1. NJ Uniform Construction Code Permit
2. Other Regulatory Agency Approvals & Permits
3. Prior Approval Certification Letters
B. BARRIER FREE REQUIREMENTS
C. STATE INSURANCE APPROVAL
D. PUBLIC EMPLOYEES OCCUPATIONAL SAFETY & HEALTH PROGRAM
E. MULTI-BUILDING OR MULTI-SITE PERMITS
F. PERMIT MEETINGS
G. MANDATORY NOTIFICATIONS
H. CONSTRUCTION TRAILER PERMITS
I. SPECIAL INSPECTIONS
X. GENERAL REQUIREMENTS .......................................................... 36
A. SCOPE CHANGES
B. ERRORS & OMISSIONS
C. ENERGY INCENTIVE PROGRAM
D. AIR POLLUTION FROM ARCHITECTURAL COATINGS
XI. ALLOWANCES ................................................................................... 37
A. PERMIT ALLOWANCE
1. Permits
2. Permit Costs
3. Applications
4. Consultant Fee
XII. SUBMITTAL REQUIREMENTS ...................................................... 38
A. CONTRACT DELIVERABLES
B. CATALOG CUTS
C. PROJECT DOCUMENT BOOKLET
D. DESIGN DOCUMENT CHANGES
E. SINGLE-PRIME CONTRACT
XIII. SOW SIGNATURE APPROVAL SHEET ........................................ 40
XIV. CONTRACT DELIVERABLES ......................................................... 41
PROJECT NAME: Basement Water Infiltration Repair
PROJECT LOCATION: State House Annex East Wing
PROJECT NO: A1122-00
DATE: July 7, 2011
PAGE 6
XV. EXHIBITS ............................................................................................. 46
A. SAMPLE PROJECT SCHEDULE FORMAT, 4 pages
B. PROJECT SITE PLAN
C. EAST WING BASEMENT WATER INTRUSION STUDY, 35 pages
D. STATE HOUSE ANNEX BASEMENT LEVEL FLOOR PLAN
E. SAMPLE BUILDING SECURITY AND CONTRACTOR USE OF THE PREMISES, 4
pages
PROJECT NAME: Basement Water Infiltration Repair
PROJECT LOCATION: State House Annex East Wing
PROJECT NO: A1122-00
DATE: July 7, 2011
PAGE 7
I. OBJECTIVE
The objective of this project is to prevent water infiltration into the Annex East Wing Basement by
repairing the foundation walls and replacing the water proof membrane along the West and North
exterior foundation walls, installing site improvements that allows for the collection of rain water and
improve the soil conditions of the State House Annex East Wing.
II. CONSULTANT QUALIFICATIONS
A. CONSULTANT & SUB-CONSULTANT PRE-QUALIFICATIONS
The Consultant shall be a firm pre-qualified with the Division of Property Management &
Construction (DPMC) in the P005 Civil Engineering Discipline and have in-house capabilities or Sub-
Consultants pre-qualified with DPMC in the P034 Historical Preservation/Restoration Discipline and
in all other Engineering and Specialty Disciplines necessary to complete the project as described in
this Scope of Work (SOW).
III. PROJECT BUDGET
A. CONSTRUCTION COST ESTIMATE (CCE)
The initial Construction Cost Estimate (CCE) for this project is $300,000.
The Consultant shall review this Scope of Work and provide a narrative evaluation and analysis of the
accuracy of the proposed project CCE in their technical proposal based on their professional opinion.
B. CURRENT WORKING ESTIMATE (CWE)
The Current Working Estimate (CWE) for this project is $400,000.
The CWE includes the construction cost estimate and all consulting, permitting and administrative
fees.
The CWE is the Client Agency’s financial budget based on this project Scope of Work and shall not
be exceeded during the design and construction phases of the project unless DPMC approves the
change in Scope of Work through a Contract amendment.
PROJECT NAME: Basement Water Infiltration Repair
PROJECT LOCATION: State House Annex East Wing
PROJECT NO: A1122-00
DATE: July 7, 2011
PAGE 8
C. COST ESTIMATING
All CCE under $750,000 may be prepared by the Consultant’s in-house staff or their Sub-Consultant’s
staff during each design phase of the project. However, if the CCE is $750,000 or larger, the
Consultant or Sub-Consultant providing the estimate must be pre-qualified with DPMC in the P025
Estimating/Cost Analysis Specialty Discipline.
All cost estimates shall be adjusted for regional location, site factors, construction phasing, premium
time, building use group, location of work within the building, temporary swing space, security issues,
and inflation factors based on the year in which the work is to be performed.
All cost estimates must be submitted on a DPMC-38 Project Cost Analysis form at each design phase
of the project with a detailed construction cost analysis in CSI format (2004 Edition) for all
appropriate divisions and sub-divisions. The Project Manager will provide cost figures for those items
which may be in addition to the CCE such as art inclusion, CM services, etc. and must be included as
part of the CWE. This cost analysis must be submitted for all projects regardless of the Construction
Cost Estimate amount.
D. CONSULTANT‟S FEES
The construction cost estimate for this project shall not be used as a basis for the Consultant’s design
and construction administration fees. The Consultant’s fees shall be based on the information
contained in this Scope of Work document and the observations made and/or the additional
information received during the pre-proposal meeting.
IV. PROJECT SCHEDULE
A. SCOPE OF WORK DESIGN & CONSTRUCTION SCHEDULE
The following schedule identifies the estimated design and construction phases for this project and the
estimated durations.
PROJECT PHASE ESTIMATED DURATION (Calendar Days)
1. Design Development Phase 50% (Minimum) 42
Project Team & DPMC Plan/Code Unit Review & Comment 14
2. Final Design Phase 100% 35
PROJECT NAME: Basement Water Infiltration Repair
PROJECT LOCATION: State House Annex East Wing
PROJECT NO: A1122-00
DATE: July 7, 2011
PAGE 9
Project Team & DPMC Plan/Code Unit Review & Approval 14
3. Permit Application Phase 7
Issue Permit
4. Bid Phase 42
5. Award Phase 28
6. Construction Phase 120
7. Project Close-Out T.B.D.
B. CONSULTANT‟S PROPOSED DESIGN & CONSTRUCTION SCHEDULE
The Consultant shall submit a project design and construction bar chart schedule with their technical
proposal that is similar in format and detail to the schedule depicted in Exhibit „A‟. The bar chart
schedule developed by the Consultant shall reflect their recommended project phases, phase activities,
activity durations.
The Consultant shall estimate the duration of the project Close-Out Phase based on the anticipated
time required to complete each deliverable identified in Section XIV of this document entitled “Project
Close-Out Phase Contract Deliverables” and include this information in the bar chart schedule
submitted.
A written narrative shall also be included with the technical proposal explaining the schedule
submitted and the reasons why and how it can be completed in the time frame proposed by the
Consultant.
This schedule and narrative will be reviewed by the Consultant Selection Committee as part of the
evaluation process and will be assigned a score commensurate with clarity and comprehensiveness of
the submission.
C. CONSULTANT DESIGN SCHEDULE
The Project Manager will issue the Consultant’s approved project schedule at the first design kickoff
meeting. This schedule will be binding for the Consultant’s activities and will include the start and
completion dates for each design activity. The Consultant and Project Team members shall use this
schedule to ensure that all design milestone dates are being met for the project. The Consultant shall
update the schedule to reflect performance periodically (minimally at each design phase) for the
Project Team review and approval. Any recommendations for deviations from the approved design
schedule must be explained in detail as to the causes for the deviation(s) and impact to the schedule.
PROJECT NAME: Basement Water Infiltration Repair
PROJECT LOCATION: State House Annex East Wing
PROJECT NO: A1122-00
DATE: July 7, 2011
PAGE 10
D. BID DOCUMENT CONSTRUCTION SCHEDULE
The Consultant shall include a construction schedule in Division 1 of the specification bid document.
This schedule shall contain, at minimum, the major activities and their durations for each trade
specified for the project. This schedule shall be in “bar chart” format and will be used by the
Contractors as an aid in determining their bid price. It shall reflect special sequencing or phased
construction requirements including, but not limited to: special hours for building access, weather
restrictions, imposed constraints caused by Client Agency program schedules, security needs, lead
times for materials and equipment, anticipated delivery dates for critical items, utility interruption and
shut-down constraints, and concurrent construction activities of other projects at the site and any other
item identified by the Consultant during the design phases of the project.
E. CONTRACTOR CONSTRUCTION PROGRESS SCHEDULE
The Contractor shall be responsible for preparing a coordinated combined progress schedule with the
Sub-Contractors after the award of the contract. This schedule shall meet all of the requirements
identified in the Consultant’s construction schedule. The construction schedule shall be completed in
accordance with the latest edition of the Instructions to Bidders and General Conditions entitled,
“Article 9, Construction Progress Schedule” (No CPM).
The Consultant must review and analyze this progress schedule and recommend approval/disapproval
to the Project Team until a satisfactory version is approved by the Project Team. The Project Team
must approve the baseline schedule prior to the start of construction and prior to the Contractor
submitting invoices for payment.
The Consultant shall note in Division 1 of the specification that the State will not accept the progress
schedule until it meets the project contract requirements and any delays to the start of the construction
work will be against the Contractor until the date of acceptance by the State.
The construction progress schedule shall be reviewed, approved, and updated by the Contractor,
Consultant, and Project Team members at each regularly scheduled construction job meeting and the
Consultant shall note the date and trade(s) responsible for project delays (as applicable). The
contractor shall request an up to date State House schedule of activities prior to the construction job
meetings so dates that will interrupt construction can be identified.
V. PROJECT SITE LOCATION & TEAM MEMBERS
A. PROJECT SITE ADDRESS
The location of the project site is:
PROJECT NAME: Basement Water Infiltration Repair
PROJECT LOCATION: State House Annex East Wing
PROJECT NO: A1122-00
DATE: July 7, 2011
PAGE 11
State House Annex Building
145 West State Street
Trenton, New Jersey 08625
See Exhibit „B‟ for the project site plan.
B. PROJECT TEAM MEMBER DIRECTORY
The following are the names, addresses, and phone numbers of the Project Team members.
10.3.4 Minutes Format: Prepare Job Meeting Minutes in approved format, figure 10.3.4-a
10.4 Correspondence
10.5 Prepare and Deliver Conformed Drawings
10.7 Approve Contractor‟s Invoicing and Payment Process
10.8 Approve Contractor‟s 12/13 Form for Subs, Samples and Materials
10.10 Approve Test Reports
10.11 Approve Shop Drawings
10.12 Construction Progress Schedule
10.12.1 Construction Progress Schedule
PROJECT NAME: Basement Water Infiltration Repair
PROJECT LOCATION: State House Annex East Wing
PROJECT NO: A1122-00
DATE: July 7, 2011
PAGE 45
10.13 Review & Recommend or Reject Change Orders
10.13.1 Scope Changes
10.13.2 Construction Change Orders
10.13.3 Field Changes
10.14 Construction Photographs
10.15 Submit Field Observation Reports
10.16 Submission Forms
Figure 10.3.4-a Job Meeting Format of Minutes
Figure 10.3.4-b Field Report
Figure 10.6 DPMC Insurance Form-24
Figure 10.6-a Unit Schedule Breakdown
Figure 10.6-b Monthly Estimate for Payment to Contractor DPMC 11-2
Figure 10.6-c Monthly Estimate for Payment to Contractor DPMC 11-2A
Figure 10.6-d Invoice DPMC 11
Figure 10.6-e Prime Contractor Summary of Stored Materials DPMC 11-3
Figure 10.6-f Agreement & Bill of Sale certificate for Stored Materials DPMC 3A
Figure 10.7-a Approval Form for Subs, Samples & Materials DPMC 12
Figure 10.7-b Request for Change Order DPMC 9b
Figure 10.9 Transmittal Form DPMC 13
Figure 10.10 Submission Checklist
PROJECT CLOSE-OUT PHASE
11.1 Responsibilities: Plan, Schedule and Execute Close-Out Activities
11.2 Commencement: Initiate Close-Out w/DPMC 20A Project Close-Out Form
11.3 Develop Punch List & Inspection Reports
11.4 Verify Correction of Punch List Items
11.5 Determination of Substantial Completion
11.6 Ensure Issuance of “Temporary Certificate of Occupancy or Approval”
11.7 Initiation of Final Contract Acceptance Process
PROJECT NAME: Basement Water Infiltration Repair
PROJECT LOCATION: State House Annex East Wing
PROJECT NO: A1122-00
DATE: July 7, 2011
PAGE 46
11.8 Submission of Close-Out Documentation
11.8.1 As-Built & Record Set Drawings, 3 sets AUTOCAD Discs Delivered to DPMC
11.8.2 (a) Warranties, etc.: 7 sets each
(b) Guarantees
(g) Letter of Contract Performance
11.8.3 Final Cost Analysis-Insurance Transfer DPMC 25
11.8.4 This Submission Checklist
11.9 Final Payment
11.9.1 Contractor’s Final Payment
11.9.2 A/E Invoice and Close-Out Forms for Final Payment
11.10 Final Performance Evaluation of the A/E and the Contractors
11.11 Ensure Issuance of a “Certificate of Occupancy or Approval”
11.12 Submission Forms
Figure 11.2 Project Close-Out Documentation List DPMC 20A
Figure 11.3-a Certificate of Substantial Completion DPMC 20D
Figure 11.3-b Final Acceptance of Consultant Contract DPMC 20C
Figure 11.5 Request for Contract Transition Close-Out DPMC 20X
Figure 11.7 Final Contract Acceptance Form DPMC 20
Figure 11.8.3-a Final Cost Analysis
Figure 11.8.3-b Insurance Transfer Form DPMC 25
Figure 11.8.4 Submission Checklist
XV. EXHIBITS
The attached exhibits in this section will include a sample project schedule, and any supporting
documentation to assist the Consultant in the design of the project such as maps, drawings,
photographs, floor plans, studies, reports, etc.
END OF SCOPE OF WORK
February 7, 1997Rev.: January29, 2002
Responsible Group Code Table
The codes below are used in the schedule field “GRP” that identifies the group responsible for theactivity. The table consists of groups in the Division of Property Management & Construction(DPMC), as well as groups outside of the DPMC that have responsibility for specific activities ona project that could delay the project if not completed in the time specified. For reportingpurposes, the groups within the DPMC have been defined to the supervisory level ofmanagement (i.e., third level of management, the level below the Associate Director> to identifythe “functional group” responsible for the activity.
CODE DESCRIPTION REPORTS TO ASSOCIATE DIRECTOR OF:
CM Contract Management Group Contract Management
CA Client Agency N/A
CSP Consultant Selection and Technical ServicesPrequalification Group
AlE ArchitectlEngineer N/A
PR Plan Review Group Technical Services
CP Construction Procurement Planning & Administration
CON Construction Contractor N/A
FM Financial Management Group Planning & Administration
OEU Office of Energy and N/AUtility Management
PD Project Development Group Planning & Administration
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EAST WING BASEMENT WATER INTRUSION STUDY
State House Annex145 West State StreetTrenton, New JerseyDecember 21, 2007
1655 Suburban Stahon Building 1617 John F. Kennedy BoulevardOne Honey Locust Court Biackwood, New Jersey
EXHIBIT “C”
Philadelphia PA 19103 215 665 049708012 8562283520
EAST WING BASEMENT WATER INTRUSION STUDYSTATE HOUSE ANNEX BUILDING
TRENTON, NEW JERSEY
INTRODUCTION
In accordance with Work Order No. 6, we submit herewith our East Wing Basement Water IntrusionStudy for the New Jersey State House Annex Building. The purpose of this report is to assess thepotential cause(s) of the mold growth and corroded metal studs found within the basementstorage room partition walls. This report is based on several site visits and a November 14, 2007 fieldsurvey involving exploratory test probes.
Our survey consisted of obtaining field data, photographing, observing in-situ construction,excavating exploratory test pits and the placement of groundwater monitors called “piezometers.”In addition, we met with State House personnel to review the building operations and history.
The exploratory pits were completed at the following locations (see Figure 2 on page 4):
• Probe #1 — Intersection of State House Annex east wing and granite terrace• Probe #2— Northwest corner of State House Annex east wing• Probe #3 — Along north face of State House Annex east wing next to air handler intake• Probe #4 — Northeast corner of State House Annex east wing near stairs (hand-dug)
We were assisted in our investigation by:
• Princeton Hydro, LLCScientists, Engineers, & Natural Resource SpecialistsRingoes, New Jersey
• Beechwood Drilling, Inc.Geotechnical & Excavating ServicesStratford, New Jersey
NOTE: CONCLUSIONS REACHED IN THIS REPORT ARE BASED ON OUR VISUAL SURVEYS, LIMITED EXPLORATORIES ANDSELECTIVE TESTING. WHILE WE ENDEAVORED TO DOCUMENT ALL ITEMS OF CONCERN AND DISTRESS BY APPLYING OURENGINEERING EXPERIENCE, PRUDENT JUDGMENT AND REASONABLE CARE, IT MUST BE UNDERSTOOD THAT HIDDENCONDITIONS AND/OR UNAVAILABLE DOCUMENTS MAY EXIST WHICH MAY IMPACT OUR REPORT.
JOSEPH B. CALLAGHAN, INC. East Wing Basement Water Intrusion StudyCONSULTING ENGINEERS State House Annex
December 21, 2007
DESCRIPTION
The New Jersey State House Annex Building is an H-shaped structure located at 145 West StateStreet in Trenton built circa 1930. The Annex Building surrounds a central fountain and courtyardarea. The building was constructed in two units. The first phase completed in 1928 included thewestern wing and half of the cross bar. The second phase completed in 1931 included the easternwing and the rest of the cross bar. To promote light into the space the East Wing has a full belowgrade basement that is approximately five feet below the rest of the building. The main entranceto the building is through the north granite paver terrace and there are two egress side stairs thatexit down from committee rooms. All surface water on the entrance sidewalk is taken to areadrains. The grassy areas each contain one drain located away from the building. The buildinglayout and investigation area are illustrated below.
WEST WlG
09 - 1111/
INVESTIGATION EASTWINGAREA
Figure 1. State House Annex Building Layout
Between 1992 and 1995 the Annex Building underwent a complete restoration. The basementwithin the renovated east wing contains mechanical/electrical space, a computer room, staffoffices, storage areas and a reference library. There is a pipe chase and plenum that runs alongthe west foundation wall. The foundation wall is a 2-0’ thick concrete structure that extends 9’-O”below grade. Along a portion of the north and west walls there is a 4” terra cotta block and stuccofinish. Circa 1998, an exterior rubberized sheet waterproofing membrane was applied along theeast, north and northwest corner of the foundation wall. There is no documentation of the workcurrently available. Water sensors were installed along the east wall behind interior finishes tomonitor for any water migration.
HISTORY
On or about September 3, 2007 the Annex Courtyard foundation backflow preventer valve failed,causing a minor flood condition in the east wing basement. The flooding caused some carpet andinterior drywall damage. During the drywall removal, mold growth and corroded metal studs werefound within the storage room and on the wall separating the storage room and the library (seeFigure 2). Joseph B. Callaghan, Inc. was subsequently retained to evaluate the causes andpotential water infiltration sources within the east wing basement.
Page 2
JOSEPH B. CALLAGHAN, INC. East Wing Basement Water Intrusion StudyCONSULTING ENGINEERS State House Annex
December 21, 2007
SUMMARY OF FINDINGS
Our visual observations can be summarized as follows (see Figure 2 and Photos No. 1 — 25):
INTERIOR
Mechanical/Electrical Room
• Evidence of water infiltration along north and west foundation wall. Heavy efflorescence withchalking along the base of terra cotta block.
• Open vertical cracking visible on the foundation wall where the terra cotta finish is removed.There was water staining along the cracks. Dampness observed at the floor line after heavyrain.
• The sump pump is working with no evidence that ground water is contributing to the waterstaining.
Pipe Chase
• No evidence of water intrusion along north end or under exterior entrance steps.• Localized minor corrosion to metal studs. The corrosion was approximately six inches to a foot
above the floor.• Although generally inaccessible, there is evidence of water intrusion under the granite terrace
toward the library.• Heavy corrosion to bottom metal track within storage room; minor staining observed on floor.
EXTERIOR
North Granite Terrace
• Granite payers gradually slope to the east with evidence of ponding along the wall andbalustrade.
• Water drains through scuppers onto the grass/stone area.• Granite paver mortar joints slightly worn
Test Pits
• The observation of in-situ subgrade construction involved excavating three test pits with the aidof a backhoe. A fourth, shallow probe, was hand-dug. The State maintenance staff removedthe landscaping stone along the wall prior to the test pits. The soil elevation below the stonevaried considerably along the foundation wall, indicating subsidence or settlement. A sectionof foundation wall was exposed at the northeast corner along the egress stair. The concrete isin good condition with one open vertical crack. This is a good indicator of the actualfoundation wall construction.
Page 3
JOSEPH B. CALLAGHAN, (NC.CONSULTING ENGINFERS
East Wing Basement Wafer Intrusion StudyState House AnnexDecember 21, 2007
Figure 2. Probe Locations along the East Wing perimeter
Our visual observations of the test probes can be summarized as follows:
Exterior
Probe #1 (TP-1)
• Building and terrace wall construction consists of a concrete foundation wall supporting stonefaçade panels above. The bottom edge of the stone panels is irregular. Brick sections wereused as shims to support the stone prior to grouting. The mortar joint has many deep voidsunder the stone.
• Three separate utilities were found between one foot and four feet below grade.• There is no waterproofing applied to the terrace or Annex walls in this location.• The terrace foundation wall footing is approximately 4-0” below grade.• There is a cold joint at the intersection of the terrace wall and Annex Building wall. The Annex
wall is continuous and the terrace wall butts up perpendicular to it.• The soil in this area is very moist and spongy. The soil materials are comprised of silty sands
mixed with varying percentages of gravels, brick, concrete and occasional pieces of lumber.The soil matrix was loose in consistency and saturated.
• A piezometer was installed along the face of the terrace, approximately 6 feet from the Annexwall. The bottom of the piezometer is resting on the fop of the terrace footing.
Page 4
JOSEPH B. CALLAGHAN, INC.CONSULTING ENGINEERS
Probe #2 (TP-2)
East Wing Basement Water Intrusion StudyState House Annex
December21, 2007
• A rubberized sheet membrane waterproofing material has been applied foundation wall. Thewaterproofing extends down from the joint below the stone panels. The membrane isterminated at the top with a liquid mastic material that is in generally poor condition. Themembrane can easily be pulled away from the wall.
• A lightening rod cable penetrated the wall. The waterproofing was not properly sealed aroundthis penetration.
• The top of the footing elevation is more than 9-0’ below grade. Excavation stopped at thispoint in order to avoid destabilizing the surrounding areas of soil. A piezometer was installed atthis depth.
• The soil in this area was of a much higher quality and dryer than that at Probe #1.
Probe #3 (TP-3)
• Wall construction is similar to Probes #1 and #2.• Waterproofing in generally good condition but the membrane termination is failing. The
material can be pulled away from the wall (see photo below).• Soil conditions are consistent with Probe #2.• Excavation continued as deep as possible (-8ft below grade) before soil walls of excavation
collapsed due to saturation and loose conditions. A piezometer was installed at this depth.
• Hand dug probe is approximately two feet deep.• Waterproofing is not continuous to stair wall.• Membrane termination has failed and there is water behind the waterproofing.
Review of Existinc Drawings
Based on the renovation drawings dated 1992, the work included rerouting several components ofthe pre-existing storm water drainage system. This included the storm water drainage to themanhole at the southwestern corner of the front entrance (TP-1). There is an 8” diameter pipe thatruns from the southwest corner of the courtyard. According to the drawing, this line penetrates thefoundation wall adjacent to the library. This may be a potential water intrusion point. We couldnot visually confirm this.
Only mastic terminationalong wall
Probe #4 (TP-4)
rmination ar Example
Page 5
JOSEPH B. CALLAGHAN, INC. East Wing Basement Water Intrusion StudyCONSULTING ENGINEERS State House Annex
December 21, 2007
CONCLUSIONS
Topographic mapping indicates that the State House Annex property is located at the edge of theDelaware River Valley at the bottom of a plateau. The plateau is approximately one mile long andrises toward the northeast from an elevation of approximately 37 feet (NGVD) to an elevation of100 feet. Therefore, it is important to control all surface and ground water around structures.
Based on our observations and discussions with State facility personnel we believe ground waterbelow the Annex Building basement is generally under control. The subsurface sump pumps anddrainage systems are functioning. Therefore, it is our professional opinion that the water infiltration,staining and interior finish damage observed in the mechanical and storage rooms is primarily dueto surface water runoff penetrating the foundation wall. The water infiltration is caused by acombination of the following factors:
1. Inadequate drainage and slope off of the granite terrace. Water generally travels andponds to the east side. When water exits through the scupper it cannot travel to thenearest area drain.
2. No waterproofing along the west side foundation wall, except at the northwest corner.3. The loose granular soils have high rates of infiltration. The loose condition adjacent to the
building provides easy infiltration to the subgrade.4. Due to the loose, granular soils, areas of subsidence have occurred. These areas provide
areas for water to collect and infiltrate.5. The lack of overall positive drainage away from the building face slows runoff, increasing
water to ground contact time, promoting infiltration.6. The existing waterproof membrane installation is vulnerable to water migration. The
membrane termination along the top is inadequate and will not provide long-termprotection. Water was found below the membrane indicating a termination addition thereis no drainage board or stone along the foundation wall to promote drainage away fromthe membrane.
We believe the metal stud corrosion and mold found within the storage room and library can beattributed to surface water run-off and infiltration through the foundation wall under the graniteterrace. The stud corrosion pattern within the storage room is indicative of water traveling alongthe basement floor slab and attacking the metal track. This moisture can be a significantcontribution to the mold growth in this area.
While we believe the surface run-off and water infiltration is the primary cause of the metal studcorrosion and mold, there are a variety of environmental conditions within the basement that maybe contributing higher interior humidity levels. Due to the variety of usages, i.e. staff offices,computer rooms, library, pipe chase and mechanical room, there are different environmentalrequirements. Due to the surrounding topography there may be a significant amount of run-offpassing below the basement floor following rain events or during seasons where ground water iselevated. Another factor is the east wing basement is five feet lower that the remaining basementlevel. We believe the random metal stud corrosion generally found above the floor within the pipechase is from excessive humidity levels not water infiltration. Due to the moist conditions and moldgrowth, we also have a general concern of the pipe chase being used as a plenum for theCommittee Room 6 above.
Page 6
JOSEPH B. CALLAGHAN, INC. East Wing Basement Water Intrusion StudyCONSULTING ENGINEERS State House Annex
December 21, 2007
RECOMMENDATIONS
The water, moisture and mold mitigation within the east wing basement requires an approach thataddresses both the exterior and interior conditions. The Annex Building layout and constructionwithin the courtyard is very complex. The granite terrace, underground utilities, and generalinaccessibility make conventional waterproofing methods very difficult and costly, particularlyabove the storage room and library. In addition, the interior space and usage is very sensitive tomoisture and humidity levels. For this reason, we recommend a phased, monitored approachbroken down into three phases. Phase I involves monitoring measures and work on interior finishes.Phase II involves exterior waterproofing in the area near the storage room and library, while Phase Illconsists of exterior waterproofing around the electrical and mechanical rooms, south towards thecomputer room. We recommend the following repair approach with associated constructioncosts (See Drawing 100 in Appendix). Due to the work complexity and coordination, recommendthe work be performed by outside contractors.
PHASE I (Interior)
Monitor Observation Areas
The existing interior finishes, i.e. library furniture and mechanical room terra cotta wall, mask or hidesthe foundation wall from observing exact water intrusion points and future work progress. To allowfuture monitoring of water intrusion and repair progress we recommend providing access to thebackside of the foundation wall.
1. Remove 2-0’ terra cotta block and stucco along the mechanical room floor. The intent isnot to disturb the elevated panels currently mounted to the walls.
2. Provide an access panel within the storage room and/or library to observe the south end ofthe pipe chase.
Current Construction Costs (CCE): $12,000.00
3. Monitor installed piezometers by an engineering firm over a six to twelve week period todetermine the ground water contribution. This will provide a benchmark for future workprogress and performed by an engineering firm.
4. Confirm 8” diameter storm water drainage pipe adjacent to library through access panel.
Engineering Fee Budget: $4,000.00
Rebuild Interior Partitions
To mitigate the future mold growth rebuild the vulnerable interior partitions along the pipe chasewith mold resistant materials. This will include partitions where the storage racks block any accessand air flow. The general procedure is as follows:
1. Replace drywall with paperless and/or mold resistant materials, i.e. USG Mold-Tough Panelsor Georgia Pacific DensArmor Drywall.
2. Keep the bottom of the mold resistant panels at least 1/2 off the floor.3. Caulk under and back prime all floor level moldings.
Current Construction Costs (CCE): $15,000.00
Another more expensive option is to rebuild the partitions with masonry block materials. While thisoption is a more long-term solution, I do not believe t is practical for the current usage.
Page 7
JOSEPH B. CALLAGHAN, INC. East Wing Basement Water Intrusion StudyCONSULTING ENGINEERS State House Annex
December21, 2007
Reduce Humidity Levels
The primary objective is to reduce the humidity levels and review the existing air distribution withinthe east wing basement. Evaluate the feasibility of dehumidifying the interior space through thecentral HVAC system and ramifications of using the pipe chase as a plenum. This work is beyondour expertise and we recommend retaining a mechanical engineering firm to review this.
PHASE II (Exterior)
The second phase will have a more direct approach in mitigating the water infiltration sourcebelow the granite terrace. The goal is to capture the surface water off the terrace and waterproofthe foundation wall above the storage room. The main Annex entrance and handicapped rampcan remain open during the work. This work should be performed at above freezing temperatures.Our recommended repairs are as follows:
Repair Items Cost ($)
1. Markout underground utility lines using ground penetrating radar. $ 8,000.00Rerouting or removal will be required.
2. Perform braced excavation along the west foundation wall to 30,000.00the terrace. This will require underpinning of the terrace footing.
3. Repair damaged concrete and repoint stone/wall joint. 3,000.00
4. Install new rubberized waterproofing with termination bars between 12,000.00Committee Room 6 egress stairs and terrace footing.
5. Backfill with compacted soils. Elevate the grades along the building 10,000.00and terrace walls 6” — 12” to promote rapid runoff.
6. Install a plastic impermeable sheet under the landscaping stones. 500.00
7. Install trench drains along the building and terrace walls at the 12,000.00stone/grass interface. Hydraulically connect the trench drains tothe existing drainage system. (See Princeton Hydra Drawing in Appendix)
Contingency (10%) $9,000.00TOTAL PHASE II CONSTRUCTION COST ESTIMATE $99,500.00
Note: The foundation wall directly under the terrace is inaccessible and not protected bywaterproofing. We believe the above repair is the most cost—effective approach butrequires future monitoring. If water still appears in the library/storage room then amore costly repair should be reviewed. One option is to install a chemical groutcurtain under the terrace. This requires cores through the terrace slab and a groutblindly injected into the soil. The estimated cost for this work is $150,000.00.
Page 8
JOSEPH B. CALLAGHAN, INC. East Wing Basement Water Intrusion StudyCONSULTING ENGINEERS State House Annex
December 21, 2007
PHASE II (Exterior)
The sheet waterproofing applied ten years ago along the north and east walls are providing someprotection. We found evidence of water infiltration along the north wall but are uncertain when itoccurred. When the terra cotta block within the mechanical room is removed and the areasubsequently monitored, the effectiveness of the existing waterproofing can be fully determined.However, since breaches were found in the waterproofing, there is a high probability of futurewater infiltration. In addition, there is no waterproofing applied along the west wall south of theaccess panel. At this time, since there is no indication of water intrusion along the east side of theAnnex wing, i.e. the moisture sensors have not activated, we are not recommending any workalong this wall at this time. The recommended repairs along the north and west walls withassociated costs is as follows:
Repair Items Cost ($)
1. Markout underground utility lines using ground penetrating radar. $ 5,000.00Rerouting or removal will be required.
2. Perform braced excavation along the north and west foundation wall. 30,000.00
3. Repair damaged concrete and repoint stone/wall joint. 5,000.00
4. Install new rubberized waterproofing with mechanical termination bars 22,000.00and drainage board.
5. Backfill with compacted soils. Elevate the grades along the building 16,000.006” — 12” to promote rapid runoff.
6. Install a plastic impermeable sheet under the landscaping stones. 1,500.00
7. Install trench drains along the building at the stone/grass interface. 14,000.00The trench drains are hydraulically connected to the existingdrainage system. (See Princeton Hydro Drawing in Appendix)
TOTAL PHASE III CONSTRUCTION COST ESTIMATE $128,500.00
Note: This work will not remedy the humidity levels within the mechanical room and pipe chase.See our recommendations within Phase I.
Submitted by,
Erik S. Villari
Allen Roth, P. E.
Page 9
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JOSEPH B. CALLAGHAN, INC.CONSULTING ENGINEERS
East Wing Basement Leak InvestigationNew Jersey State House Annex
December 7, 2007
Terra Cotta + Stucco overConcrete Foundation Wall
Photo 1. Water Infiltration along North Wall of ElectriCal Room
Water Staining andWeathering
Photo 2. Water Infiltration @ Northwest Corner of Mechanical Room
JOSEPH B. CALLAGHAN, INC.CONSULTING ENGINEERS
East Wing Basement Leak InvestigationNew Jersey State Hause Annex
December 7, 2007
Photo 3. Basement Wall Section @ Air Intake in West Wall of Electrical Room
Photo 4. Water Infiltration @ Northwest Corner of Electrical Room
JOSEPH B. CALLAGHAN, INC.CONSULTING ENGINEERS
East Wing Basement Leak InvestigationNew Jersey State Hause Annex
December 7, 2007
Photo 5. Water Infiltration behind Circuit Breaker on West Wall of Mechanical Room
Photo 6. Water Infiltration @ Northeast Corner of Mechanical Room
JOSEPH B. CALLAGHAN, INC.CONSULTING ENGINEERS
East Wing Basement Leak InvestigationNew Jersey State House Annex
December 7, 2007
Photo 7. Looking North Down the Utility Chase
Photo 8. Typical Condition of Metal Stud Wall Framing in Chase
JOSEPH B. CALLAGHAN, INC.CONSULTING ENGINEERS
East Wing Basement Leak InvestigationNew Jersey State House Annex
December 7, 2007
Photo 9. More Severe Corrosion of Chase Framing @ Storage Room Wall Probe
Photo 10. Looking South @ South End of Utility Chase
JOSEPH B. CALLAGHAN, INC.CONSULTING ENGINEERS
East Wing Basement Leak InvestigationNew Jersey State House Annex
December 7, 2007
Photo 11. Location of Probe #1
Photo 12. Probe #1
JOSEPH B. CALLAGHAN, INC.CONSULTING ENGINEERS
East Wing Basement Leak InvestigationNew Jersey State House Annex
December 7, 2007
Photo 13. Joint Between Concrete Foundation Wall & Stone Above
Photo 14. Location of Probes #2 and #3
JOSEPH B. CALLAGHAN, INC.CONSULTING ENGINEERS
East Wing Basement Leak InvestigationNew Jersey State Hause Annex
December 7, 2007
Photo 15. Waterproofing Applied to Foundation Wall @ Probe #2
Photo 16. Probe #2 & Piezometer Installation in Progress
JOSEPH B. CALLAGHAN, INC.CONSULTING ENGINEERS
East Wing Basement Leak InvestigationNew Jersey State House Annex
December 7, 2007
Photo 17. Probe #3 in Progress
Photo 18. Probe #3 Backfilled with Piezometer Installed
JOSEPH B. CALLAGHAN, INC.CONSULTING ENGINEERS
East Wing Basement Leak InvestigationNew Jersey State House Annex
December 7, 2007
i9
Photo 19. Northeast Corner of Annex
Photo 20. Hand-Dug Probe @ Northeast Corner
JOSEPH B. CALLAGHAN, INC.CONSULTING ENGINEERS
East Wing Basement Leak InvestigationNew Jersey State House Annex
December 7, 2Q07
Wall Joint w/Brick, Mortar,& other Miscellaneous
Material (typ)
Photo 21. Moisture behind Waterproofing @ Hand Dug Probe
Photo 22. Visible Vertical Crack on Concrete Foundation Wall near Annex Northeast Corner
JOSEPH B. CALLAGHAN, INC.CONSULTING ENGINEERS
East Wing Basement Leak InvestigationNew Jersey State House Annex
December 7, 2007
Photo 23. Probe #1 Backfilled & Piezometer Capped
Photo 24. Probe #2 Backfilled & Piezometer Capped
JOSEPH B. CALLAGHAN, INC.CONSULTING ENGINEERS
East Wing Basement Leak InvestigationNew Jersey State House Annex
December 7, 2007
Photo 25. Probe #3 Bockfilled & Piezometer Copped
December 21, 2007
MEMORANDUM
To: Allen Roth, P.E., J.B. Callaghan, Inc.From: Geoffrey M. Goll, P.E.
Attachments: Existing Drainage and Probe Location MapProbe LogsProposed Drainage System PlanTypical Section of Excavation and Backfill
Re: Subsurface InvestigationGroundwater InfiltrationState House Annex145 West State StreetTrenton, New JerseyPrinceton Hydro Project No. 0447.007
Princeton Hydro was contracted to coordinate and subcontract an excavation contractor to progress testpits (probes) adjacent to the existing State House Annex. As we understand, the basement of the StateHouse Annex has experienced water infiltration to the basement, leading to some minor water damageand to the generation of mold. It was Princeton Hydro’s task to observe the basement and probes toascertain potential routes of infiltration and to make conclusions and recommendations to mitigate againstfuture infiltration.
Princeton Hydro conducted the work in three (3) phases. The first phase included a site walk andinspection of the interior of the basement. The second phase involved the probe investigation on theoutside of the building. The third phased included the review of existing drawings provided by the NJOffice of Legislative Services.
Phase I — Site Walk
The interior of the basement did reveal evidence of moisture penetrating the walls from the exterior. Theevidence of moisture included swelled areas of the interior wall terra cotta veneer (northern wall on eastwing) and water staining along the western wall of the east wing at the location of the granite terrace.Additionally, JB Callaghan and Princeton Hydro observed corrosion of galvanized studs on interior walls.This corrosion, however, did not appear to be stemming from direct contact with water, but possiblymoist air conditions. During this inspection it could not be confirmed that the infiltration of water wascurrently occurring. And as we understand, waterproofing was installed on the northern walls on the eastwing in the past (to be discussed by J.B. Callaghan in detail).
Phase II— Test Pit Investigation
The second phase was completed on November 14, 2007. The subcontracted excavation contractor wasBeechwood Drilling of Laurel Springs, NJ. To progress the probes, a rubber-tire backhoe was used. The
Princeton Hydro, LLCa 1108 Old York Road Suite 1 P0 Box 720 Ringoes, NJ 08551 t. 908.237.5660 f. 908237.5666
o 1105 taurel Oak Road Suite 136 Voortiees, NJ 08034 t. 856.346.0060 f. 856.346.0065o 120 East Uwchlan Avenue Exton, PA 19341 t. 610524.4220 f. 610.524.9434
Princeton Hydro PHScientists, Engineers &Environmental PlannersDesigning InnovativeSolutions for WaterWetland and SoilResource Management
www. PncetonHydro.com
Subsurface InvestigationGroundwater Infiltration
State House Annex145 West State StreetTrenton, New JerseyDecember 21, 2007
investigation was observed by Mr. Grant Achey of Princeton Hydro and Mr. Erik Villari of J.B.Callaghan. Mr. Geoffrey M. Goll, P.E. (Princeton Hydro), Mr. Allen Roth, P.E. (J.B. Callaghan), and Mr.John Dye of the State House Facilities group were also on site for shorter periods of time to observe theprogression of the probes.
A total of three (3) probes were completed to various depths. In Several probes the depths were limiteddue to the discovery of a number of buried pipes, the origin of which was unknown. Probes 1, 2 and 3were excavated to a depth below existing grade of four (4) feet, nine (9) feet, and eight (8) feetrespectively. Probe 1 was limited to four (4) feet due to an extensive network of utilities in the area ofexcavation. Probe 3 was limited to eight (8) feet due to collapsing side walls as the soil was saturated andloose. In general the probes revealed fill materials comprised of silty sands mixed with varyingpercentages of gravels, brick, concrete, and occasional pieces of lumber. The soil matrix at the time ofexcavation was loose in consistency and saturated for the majority of the soil profile. It was alsoobserved during the investigation that surface grades adjacent to the probe areas were relatively lower inelevation than surrounding grades with localized areas that had experienced subsidence. It was alsoobserved that concentrated runoff from the building and granite terrace is draining toward the east wingon the western wall. This runoff does not drain to an inlet, but ponds at the corner of the terrace and thebuilding, allowing infiltration along the building foundation.
As part of the investigation, the exposed foundation walls were also observed. Within Probe 1, thefoundation of the granite terrace was observed. The footing appeared to be located at a depth of four (4)feet below existing grades. The footings of the building were not observed. Within Probes 2 and 3,waterproofing was observed on the exterior of the foundation walls, but was in poor condition, withlosses of bonding between the wall and waterproofing membrane.
Prior to backfihling each probe (Probes 1 through 3) was fitted with a 2” diameter PVC piezometer. Thepiezometers were placed in the event that monitoring of groundwater is performed to determine theimpact of the drainage corrections.
Phase III — Review of Existing Plans
The NJ Office of Legislative Services provided plans of the interior plumbing and exterior utilitysystems. As these plans were proposed for some components, it is not known whether the proposed workwas ever implemented. However, it did provide evidence of some existing systems. The plans providedwere prepared by Short and Ford, Johnson Jones, and architectural firm. The drawings are identified as“SP-1, Sheet 1 of 3”, “UP-i, Sheet 2 of 3”, “P-810”, and “M-810”, all last revised December 15, 1992.Based on these plans it was evident that it was proposed to reroute several components of the pre-existingstormwater drainage system, including the stormwater drainage to the existing manhole at thesouthwestern corner of the building front entrance courtyard. Of particular interest is the location of an8” diameter drainage pipe that runs from the southwest corner of the courtyard. This pipe, according tothe plan, penetrates the foundation wall and connects to interior plumbing that conveys roof drainage viaa roof leader adjacent to the library.
The existence of this roof leader and drainage pipe leads to 2 possible sources of moisture penetration: 1)if the downspout and interior piping system is compromised and 2) if the penetration of the pipe throughthe exterior wall is not sealed.
Pnnceton Hydro, LLC 2
Subsurface InvestigationGroundwater Infiltration
State House Annex145 West State StreetTrenton, New JerseyDecember 21, 2007
Observation and Conclusions
Based on our observations during the investigation, it appears that water infiltration is generally due tosurface runoff infiltrating at or near the building foundation walls. The infiltration is caused by severalinterrelated factors:
• Loose, granular soils have high rates of infiltration relative to materials that contain more finematerials such as stiff silts and clays. The existence of the granular materials in such a loosecondition adjacent to the building is providing a route for infiltration.
• Due to the loose nature of the soil adjacent to the building, areas of subsidence have occurred.These areas have provided areas for water to collect and subsequently infiltration through the soilor at the soil/foundation wall interface.
• The lack of overall positive drainage from the side of the building slows runoff down, increasingwater to ground contact time thus promoting infiltration.
Based on plans provided by the NJ Office of Legislative Services, there is a downspout located at the areaof observed interior mold (library). This downspout, which subsequently is routed via an 8” diameter castiron pipe along an interior wall, is evaculated from the building via a penetration in the foundation wall todischarge to the exterior drainage system. If the integrity of this pipe system is compromised, thenmoisture could also penetrate the building through this system.
It was also observed through a review of topographic mapping that the State House Annex property islocated at the edge of the Delaware River valley at the bottom of a plateau that rises from an elevation ofabout 37 (NGVD) feet to elevation 100 feet, one (1) mile to the northeast. Therefore, there may be asignificant quantity of subsurface runoff that passes below the building following storm events or duringseasons where groundwater is elevated near the basement floor. This may be contributing to elevatedhumidity within the basement. This excessive humidity may be causing the corrosion of the galvanizedsteel studs within the basement walls.
Recommendations
Based on our observations and conclusions, we offer the following solutions. These solutions must becompleted together to provide the best mitigation against water infiltration.
• The soil adjacent to the building should be excavated down to 18 inches below the basement floorat a width of eight (8) feet (to allow compaction equipment) and backfilled with compacted soil.The soil should consist of at least 20-3 0 percent fine particles (silts and clays) and be compactedto the maximum dry density as determined through test method ASTM D698 (Standard Proctor).The existing soils should not be used, but disposed of off-site. Adjacent to the granite terrace itmay be required to install vinyl sheet pile to the same depth as excavation below the terrace’sfooting could cause it to settle. Waterproofing membranes should be applied to the exterior to thefoundation walls.
• The grades adjacent to the building should be elevated by 6-12 inches to promote rapid runoff ofstormwater from the sides of the building.
• Below the crushed stone adjacent to the building, plastic impermeable sheeting should be placedto further reduce infiltration.
Pnnceton Hydro, LLC 3
Subsurface InvestigationGroundwater Infiltration
State House Annex145 West State StreetTrenton, New JerseyDecember 21, 2007
• Trench drains should be installed at the toe of the slope of slope of the raised grade describedabove at the interface between the crushed stone surfacing and turf. These trench drains wouldcapture runoff before it could run over the lawn and infiltrate to the subsurface. These trenchdrains would be hydraulically connected via PVC piping to the existing drainage system.
• To mitigate humid air caused by water vapor intrusion to the basement, a dehumidificationsystem should be installed within all areas of the basement.
• The interior downspout and associated conveyance system adjacent to the library should beinspected for leakage and the penetration at the interior of the foundation wall should beinspected for evidence of moisture infiltration. Also, when the exterior excavation work iscomplete, the exterior 8” diameter PVC pipe should be inspected and repaired if found to becracked or broken.
I Date Excavated: 11-14-2007 Project Name: State Annex Building - Piezometer InstallTest Pit TPIProject Number: 0447.007 IClient: J.B Callaghan, Inc. TEST PIT LOG
Contractor: Beechwood Drilling and Excavation Oerator: Jim pfl i-4ydro, L.LC.guipment: Rubber Tire Back-hoe IBucket Size: 1105 Laurel Oak Road
Suite 136Northing: 0 lEasting: 0 lElevation: 0 IDatum: Vooitiees, NJ 08043Location: TP1 IDepth of Test Pit: 4’ p. 856.346.0060
f. 856.346.0065
Sample not Collected D ZipLoc (grab) Jar (grab) Q Intial Groundwater Level:
Sampling Method Groundwater not Encountered: spector: GA pfbt0nhy&0c0m
Other: Static Groundwater Level: Page Number 1 of 1
._.El.WL Depth Log Description of Materials
Depth SmpI. USCS Remarks
FILLSillty SAND, brick and metal debris, 4-12” cobbles andboulders, Veiy Loose, WET
Ground Surface 0.00
S.
SI SM
2- 2” copper pipes run parallel toporch foundation @ 3.5 fbgs
Soil saturated heaving duringcompaction
28” Stone jointed to foundationusing brick and mortar cold joint
No weather proofing found onfoundation wall
0.00•
5.00-
10.00-
0.00
-10.00In on
Horizontal Coor. Notes:Vertical Coor. Notes:
Project Numler: 0447.007Test Pit Number:
Grnuno’water: Measurements taken at time nf investigation are the csnditinns at lime nf excavation and are nnt indicative of seasonal fluctuations.
•
•
•:1:
Horizontal Coor. Notes:Vertical Coor. Notes:
pH
Soil saturated heaving duringcompaction
28’ Stone jointed to foundationusing brick and mortar cold joint
Weather proofing present onfoundation wall does not coverjoint between foundation and 28”building Stones
Old electriacl conduit located andremoved.
Piezometer installed at 8 fbgs and4 feet away from building wall.
Piezometer consists of 5’ slootedpipe and 3’ solid PVC at top. Finesand and gravel filled aroundslotted pipe as backfillingprogressed.
Project Number: 0447.007Test Pit Number: TP2
Princeton Hydro
I Date Excavated: 1 1-14-2007 IProject Name: State Annex Building - Piezometer InstallTest Pit TP2Project Number: 0447.007 Client: J.B Callaghan, Inc. TEST PIT LOG
Contractor: Beechwood Drilling and Excavation lOperator: Jim pr Hydro, L L.CEquipment: Rubber Tire Back-hoe I Bucket Size: 1105 Laurel Oak Road
Suite 136Northing: 0 Easting: 0 Elevation: 0 IDatum: Voorhees, NJ 08043Location: TP2 Depth of Test Pit: 9’ p. 856.346.0060
f 856346.0065
Sample not Collected 0 ZipLoc (grab) Jar (grab) Intial Groundwater Level:
Sampling Method Groundwater not Encountered: ispector: GA W’.W.p5nCetOnhydrO.COm
Other: Static Groundwater Level: Page Number 1 of 1
._.El.WL Depth Log Description of Materials
Depth Smpl. USCS Remarks
Ground SurfaceFILLSillty SAND, brick, concrete, metal debris, 4-1 2” cobbles andboulders, Very Loose, WET
0.00
SM
SI
0.00
-10.00in nn
5.00-
10.00-
Gmundwater Measurements taken at time of investigation are the cundilisns at time of excavation and are not indicatfve of seasonal fluctuations.
Princeton Hydro
•
S.
S.
5:
:.:•
:5:
•
S.
PH
28 Stone jointed to foundationusing brick and mortar cold joint
Project Number: 0447.007Test Pit Number: TP3
Test Pit TP3 Date Excavated: 11-14-2007 Project Name: State Annex Building - Piezometer InstallationTEST PIT LOGProject Number: 0447.007 Client: J.B Callaghan, Inc.
Contractor: Beechwood Drilling and Excavation Operator: Jim pH Pnnceton Hydro, L.L.C.Equipment: Rubber Tire Back-hoe Bucket Size: 1105 Laurel Oak Road
Suite 136Northing: 0 jEasting: 0 Elevation: 0 Datum: Voorhees, NJ 08043Location: TP3 Depth of Test Pit: 8 p. 856,346.0060
f. 856.3460065
Sample not Collected 0 ZipLoc (grab) Jar (grab) j Intial Groundwater Level:
Sampling Method Groundwater not Encountered: ispector: GA Ww.princetonhydro corn
Dther: Static Groundwater Level: Page Number 1 of 1
._.El.WL Depth Log Description of Materials
Depth Smpl. USCS Remarks
FILLVery Dark Greyish Brown I OYR3/2, Sillty SAND, brick,concrete, metal debris, 4-12 cobbles and boulders, VeryLoose, WET
Ground Surface 0.00
SM Soil saturated
0.00
-8.00
Si
5.00-
10.00—
Weather proofing not present onfoundation wall
Piezometer installed at 8 tbgs and1.5 feet away from building wall.
Piezometer consists of 5’ slottedpipe and 3’ solid PVC at top. Finesand and gravel filled aroundslotted pipe as backfillingprogressed.
Ground water was not encounteredduring excavation
Horizontal Coor. Notes:Vertical Coor. Notes:
8.00
-10.0010.00
Groundwater: Measurements taken at time of inventigatiun are the conditiuns at time of excavatiun and are nut indicative of seaaonat fluctuations.
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NU STATEHOUSE °
ANNEX 8ULDNC—
PREPARED PROJECT NAME/LOCATION:SCEP23STS AND ENGiNEERS
1108 OLD YORK ROAD. SUITE 1 NEW JERSEY PROPOSED DRAINAGEP.O. BOX 720
RINGOES, NEW JERSEY 08551 STATEHOUSE SYSTEMPHONE. 908,237.5660
SCIENTISTS AND ENGINEERS1108 OLD YORK ROAD. SUiTE 1
P.O. BOX 720RINGOES, NEW JERSEY 08551
PHONE. 906.237.6660FAX. 908.2375666
WWW.PRINCETONUYDRO.COM
1SCALE
RAISE GRADE6” MIN. FROM EXIST.AT BLDG. WALL
EXTERIOR WATERPROOFINGMEMBRANE
FOUNDATION WALL, 24” THICK
BASEMENT INTERIOR
TRENCH DRAIN
EXCAVATE SOILS &BACKFILL w/ SILTYSANDS, COMPACTED
IN 8” LOOSETHICKNESS LIFTS.
EXCAVA11ONBRAGNG
(TO BE REMO UPONBACKflWNG)
PRINCETONHYORO, [[C
PREPARED FOR:
NEW JERSEYSTATEHOUSE
ANNEX DRAINAGE
PROJECT NAME/LOCATION:
TYPICAL SECTION
DATE: 12/21/2007PROJECT NO.: 0447.007
STATE HOUSE ANNEXBasement Level
(tc parking garage and State Libraly)
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SampleBUILDING SECURITY AND CONTRACTOR USE OF THE PREMISES
PART 1 GENERAL
1.01 REQUIREMENTS INCLUDED
A. Coordination, site and building access, parking, deliveries and storageB. Availability and use of utilitiesC. Contractor work areas, working conditions, and equipment storage regulationsD. Noise and odor restrictions, material approvals and working hoursE. Security issuesF. Protection of interior finishes
The following items describe the allowed use of the N.J. State House Annex building andgrounds by the contractor, the availability and use of utilities, contractor equipment storageregulations, noise and odor restrictions, security issues, parking restrictions, materialdeliveries, working hours and protection of interior finishes. This list shall not be consideredall-inclusive and may be extended by the Consultant or Project Manager. The content of thissection shall not relieve the contractor from complying with the terms of the DPMC“Instructions to Bidders and General Conditions” and “Supplementary Instructions To BiddersAnd General Conditions” included in the project specifications.
PART 2 PRODUCTS
Not Used
PART 3 EXECUTION
3.01 COORDINATION, SITE ACCESS, PARKING, DELIVERIES, AND STORAGE
A. The contractor shall provide a verbal daily Progress Report to the Project Manager, Office ofLegislative Services (OLS) staff, Building Manager and State Police identif’ing the constructionwork to be performed.
B. It should be noted that other projects may be in progress concurrently with this project withinthe Capitol Complex area. Site access, deliveries, traffic control, parking, heavy equipmentparking, material storage and trailer locations must be coordinated with the Project Manager,State Police, and Building Manager.
C. Demonstrations may be held in front of or adjacent to the State House, State House Annex, or atother sites at the Capitol Complex. The contractor shall not block access to these areas.
D. The public and building’s tenants must have free and safe access to, from, and within all StateCapitol Complex buildings including the parking garage at all times.
E. Contractor access to the building’s interiors will be limited to approved routes. Underabsolutely NO circumstances will the contractor’s personnel, materials or equipment gain access
Basement Water Intrusion Repair, State House Annex East Wing Page 1 of 4BUILDING SECURITY AND CONTRACTOR USE OF THE PREMISES
EXHIBIT “E”
or use routes except as authorized herein. Routes may be modified by Building Management,OLS, the State Police or Project Manager as may be necessary.
F. The Contractor must coordinate in advance with the Project Manager, OLS, BuildingManagement and the State Police regarding protection of facilities, equipment and people.
3.02 AVAILABILITY AND USE OF UTILITIES
A. Use of the building elevators for the transportation of construction materials or equipment willNOT be allowed.
B. Electric and water are available at the site. The Building Manager and Project Manager willapprove, in advance, specific usage.
3.03 CONTRACTOR WORK AREAS, WORKING CONDITIONS AND EQUIPMENTSTORAGE REGULATIONS
A. The contractor shall not unreasonably encumber the facilities with its equipment or work to beperformed. The contractor shall be responsible for clean up every day.
B. The contractor shall, at all times during the progress of the work, keep the site free from theaccumulation of all rubbish and debris caused by its performance. The Contractor shall removeall equipment, tools, debris and rubbish from or related to its work to the satisfaction of theBuilding Manager, OLS and the Project Manager.
C. The contractor shall adequately secure and protect its equipment, materials and vehicles. TheState assumes no liability for any damage to, or theft of, the contractor’s property. Thecontractor shall have the use of a designated area for storage and staging of constructionmaterials and equipment. If outdoors, items stored in this area shall be screened from view bythe public. The contractor shall install a six foot high fence with screening material to surroundthe area. The location of the area, type fence and screening material to be used shall beapproved by the Project Engineer, Project Manager, the Building Manager and State Police.The contractor shall be responsible for adhering to security procedures outlined by the BuildingManager and the State Police and any specific needs of the OLS.
D. The contractor is responsible for all safety precautions for all of its employees and propertywhile performing its services.
E. The contractor shall strictly limit its employees’ use of the facilities for lunch, smoking or resttime usage to only those areas designated by the Building Manager. Use of State telephoneswill not be allowed. Use of toilet facilities within the building shall not be permitted. Smokingis not allowed inside any of the buildings within the Complex.
F. The contractor shall, at all times, enforce strict discipline and good order among its employeesand shall not employ any unfit person or any non-skilled person in the task assigned to him. Thecontractor shall supervise and direct the work using its best skill and attention.
Basement Water Intrusion Repair, State House Annex East Wing Page 2 of 4BUILDiNG SECURITY AND CONTRACTOR USE OF THE PREMISES
The contractor shall employ a competent, full-time supervisor to appropriately supervise thework and protect people and the facilities. The contractor must maintain a person on the sitewho represents the firm and can make immediate decisions when required.
G. The contractor agrees that, upon request by the Project Manager, it will remove from serviceshereunder any of its employees who are incompetent, prone to tardiness, absenteeism or theft,are improper in conduct, or are not qualified or needed to perform the work assigned.
H. The Consultant, in cooperation with the contractor, Project Manager, State Police, OLS andBuilding Management representatives, shall develop a “Project Directory” which identifies keydesignated representatives who may make decisions. Phone and cell phone numbers and pagersmust be identified for immediate problem resolution.
I. If a construction dumpster is used by the contractor, it shall be placed in a location approved bythe Building Manager, Project Manager and State Police. Any dumpster shall be properlysecured during the project and promptly removed at the end of the project and emptied regularlyso as not to allow trash to be spewn about the grounds or to cause odors.
3.04 NOISE AND ODOR RESTRICTIONS, MATERIAL APPROVALS AND WORKINGHOURS
A. WE HAVE TO DISCUSS WHEN CONTRACTOR SHALL PERFORM THE WORK.
B. Consideration shall be given by the contractor regarding odors, adhesives, noise, etc. If the odorsor noise are such that they may disturb the building tenants and/or public in any way, then suchwork shall be performed while the building is not occupied. This determination shall be at thesole discretion of the Project Manager and OLS.
C. Construction work shall be performed adjacent to other State offices in full and continuous useduring the course of the project. Therefore, the contractor shall coordinate all operations with theProject Manager, OLS and the Building Manager to minimize disturbances to the occupants ofthese offices. The playing of radios and other unnecessary noise will not be permitted.
D. All material safety data sheets shall be submitted to and approved by, the Project Manager priorto use of the material.
3.05 SECURITY ISSUES
A. Prior to working on site, the contractor and his/her employees are subject to a security clearanceby the State Police. The contractor and all employees must wear badges issued by the StatePolice and sign in and out each day.
3.06 PROTECTION OF INTERIOR AND EXTERIOR FINISHES
A. Because of the historic nature of the State House Annex, the contractor shall take extra care toavoid damage or soiling to any part of the facility. The contractor is responsible for all daffiagesor destruction caused directly or indirectly by its performance to any part of the building oradjoining property. Any damage or destruction caused by the contractor or its employees will berepaired as the Building Manager, OLS and the Project Manager direct and to their satisfaction
Basement Water Intrusion Repair, State House Annex East Wing Page 3 of 4BUILDING SECURITY AND CONTRACTOR USE OF THE PREMISES
with all costs charged to the contractor. The costs may be deducted from any and all amounts dueto the contractor.
B. Because this project involves a building of historical significance which is on the State andNational Historic Registers, the contractor shall take extra care to avoid damage or soiling to anypart of the building or its finishes. Any of the contractor’s employees found defacing, damagingor marring the buildings or its finishes shall be immediately removed by the contractor. Thecontractor shall be charged for all remedial work to restore the damaged area to its originalcondition to the satisfaction of the State.
C. The contractor shall take all necessary steps to ensure adequate protection of all buildingfurniture, equipment and building finishes, including but not limited to: floors, walls, windows,draperies, blinds, fan coil unit miliwork, carpeting, doors and doorways. In this endeavor, allworkers are to take precautions to protect rugs and floors. The contractor shall be charged for allremedial work to clean, repair and/or replace items damaged by the contractor to the satisfactionof the State.
D. The contractor is responsible for the cost of cleanup of dust, dirt and stains caused by the work tothe satisfaction of the Building Manager, OLS and the Project Manager. The contractor shall takeall necessary precautions to keep dust, dirt and debris to a minimum within the construction area.
Basement Water Intrusion Repair, State House Annex East Wing Page 4 of 4BUILDING SECURITY AND CONTRACTOR USE OF THE PREMISES