Attachment_2_Statement_of_Work.pdf

Solicitation no. 140P8323Q0028

Attachment 2, Statement of Work

Conservation Treatment of Outdoor Cultural Resources

Fort Vancouver National Historic Site (FOVA)

PEARSON AIR MUSEUM COMPLEX,

FORT VANCOUVER NATIONAL HISTORIC SITE

Statement of Work

Conservation Treatment of Outdoor Cultural Resources

1. BACKGROUND

The Pearson Air Museum Complex includes a modern museum building, three historic structures, and numerous outdoor cultural resources. Three of these are due for conservation treatment.

In the early years of the 20th century, Vancouver Barracks, and its polo field, was a central place for aviation enthusiasts to gather and try out their aircraft. When the United

States entered World War I in 1917, the polo field became the site of the Spruce

Production Division's Spruce Cut-Up Mill, where spruce logged from the forests of the

Pacific Northwest was manufactured into aviation-grade lumber.

In the early 1920s, the Spruce Mill was demolished, and the field once again became an airfield, first known as the "Vancouver Barracks Aerodrome," and christened "Pearson

Airfield," after Lt. Alexander Pearson, in 1925. Beginning in 1923, the field was home to the 321st Observation Squadron, 96th Division, commanded by Lt. Oakley Kelly from

1924-1929, and by Lt. Carlton Bond from 1929-1933 and 1938-1940.

Another highlight in the history of Pearson Field occurred in June 1937, when the Soviet

Union launched the first trans-polar flight from Moscow with a three man crew, piloted by Valery Chkalov. After over three days of flying, and while en route to San Francisco, the ANT-25 aircraft piloted by Chkalov touched down at Pearson Field due to an engine oil leak. The event put Pearson Field, and Vancouver, Washington, on the front page of newspapers around the world. Pearson Field was decommissioned by the Army Air

Corps at the end of World War II, but it remains in service as a municipal airfield.

Pearson Air Museum connects visitors to the history of aviation at Pearson Field. From its roots as a military airfield, to its history as the site of the Spruce Mill and its transformation into a civilian field, Pearson Air Museum helps provide a detailed look into the golden age of aviation at Pearson Field.

2. PURPOSE

The purpose of this contract is to provide professional object conservation treatment for three (3) outdoor cultural resources.

Attachment 1, Statement of Work

Conservation Treatment of Outdoor Cultural Resources

3. SCOPE OF WORK

The Contractor shall provide the National Park Service with all labor, supplies, materials, facilities, and travel necessary to provide conservation treatment for the outdoor cultural resources as described below. Condition assessments / treatment proposals for the 321st

Observation Squadron Monument, Carlton Bond statue, and Chkalov Monument are attached. This conservator must also perform work according to principles and practices outlined in the Code of Ethics and Standards of Practice of the American Institute for

Conservation and qualifications at: https://www.culturalheritage.org/about-conservation/code-of-ethics.

A. 321st Observation Squadron Monument: identification of paint layers, removal of loose paint, repainting with concrete-safe paint in historically accurate colors, repair crack in eagle wing, clean and wax plaques; replace missing hardware, submit conservation treatment report.

B. Carlton Bond statue: attempt to contact artist if still alive to discuss preferred look, remove surface dirt, reduce green corrosion layer, wax, clean stone pedestal, submit conservation treatment report.

C. Chkalov Monument: clean surface, clean and wax plaques, replace cracking putty with grout or similar, replace missing pebble facings, remove residual Velcro and related adhesive, investigate and mitigate source of iron corrosion on south left plaque, submit conservation treatment report. A QUOTE OPTION is the application of a water repellant to entire monument.

On-Site Visit Post Award:

On-site visit to be conducted by a certified objects conservator to complete the following tasks:

1. Review/update condition assessments and treatment proposals

2. Complete conservation treatments

4. DELIVERABLES

The contractor shall submit documents for COR review and written approval in accordance with items A and B before proceeding with the next phase. The phases are as follows:

A. Submit treatment proposals and proposed schedule

B. Deliver treatment reports

All submissions shall be delivered to:

National Park Service

Fort Vancouver National Historic Site

800 Hatheway Road, Building 722

Vancouver, WA 98661 https://www.culturalheritage.org/about-conservation/code-of-ethics https://www.culturalheritage.org/about-conservation/code-of-ethics

Conservation Treatment of Outdoor Cultural Resources

The COR shall notify the contractor in writing of approval or rejection of the work within

30 days. Any additions or corrections shall be completed within 30 calendar days. In the event the government delays comments beyond the period specified, the contractor shall be entitled to a day-to-day extension in the completion date. COR shall submit a request for additional time needed in the performance period with sufficient detail/rationale via email. Contracting Officer may authorize additional time via email and follow up with submitting a bilateral modification. Additional time may only be authorized by the

Contracting Officer.

5. ADDITIONAL WORK

Contractor shall prepare and submit any additional work as a written change order request, including justification of why additional work is needed, details of the work/tasks, any additional time that should be considered to complete the additional work beyond the awarded completion date, and all associated costs. Send the change order request package to the Contracting Officer by email and cc: COR. Only the Contracting

Officer has the authority to agree to any additional work. Should a change order request be approved, COR shall be responsible for ensuring funds are provided via a new FBMS purchase request in the agreed upon change order amount. Upon receipt of the approved purchase request, the Contracting Officer will prepare and route for signature a bilateral modification, per mutual agreement of the parties.

6. TRAVEL

The Contractor shall be responsible for all travel necessary to successfully perform the work outlined in the Scope of Work, specifically a minimum of two trips to:

Pearson Air Museum Complex

1115 East 5th Street

Vancouver, WA 98661

7. PERIOD OF PERFORMANCE

Period of Performance:

All work including review and approval shall be completed on or before August 30, 2024. Items 1 -3 below must be completed on or before November 1, 2023.

Schedule:

1. Accomplish post-award site visit within 14 days from Award.

2. Submit any condition assessment updates, and treatment proposals for NPS review within 30 days of site visit.

3. Submit Final treatment proposals within 30 days of receiving NPS comments.

4. Complete treatments.

Conservation Treatment of Outdoor Cultural Resources

8. WARRANTY

The contractor shall guarantee the workmanship against defects in work and material for a minimum of one year. The warranty period shall commence with final acceptance of work.

This shall include all labor and parts at no additional cost to the government.

If during this warranty period, defective workmanship, materials, or equipment are identified by the government, the contractor will be notified, in writing, as to liability and responsibility for corrective action at no cost to the government.

Action may include but is not limited to:

A. Placing all work into satisfactory condition;

B. Making good all damages to equipment, the site, the building, or contents thereof, that have resulted from such unsatisfactory work; and

C. Making good any work, materials, or equipment that are disturbed in fulfilling the guarantee including any work, materials, or equipment that may have been guaranteed under another contract.

Should the contractor fail to proceed with work in accordance with the guarantee within seven calendar days from the notice of corrective action(s), the government will have such work performed at the expense of the contractor.

In no event will the government be responsible for any extension or delays in the scheduled deliverables or periods of performance under this contract as a result of the contractor’s obligations to correct defects, nor shall there be any adjustment of the delivery schedule or period of performance as a result of the correction of defects unless provided by a supplemental agreement with adequate consideration.

If the government returns any work to the contractor for correction or replacement under this contract, the contractor shall be liable for transportation charges up to an amount equal to the cost of transportation by the usual commercial method of shipment from the place of delivery specified in the contract (irrespective of the F.O.B. point or the point of acceptance) to the contractor’s plant and return to the place of delivery specified in the contract. The contractor shall also bear the responsibility for the work while in transit.

The contractor shall be liable for the reasonable costs, including travel of personnel, and disassembly and reassembly of larger items when it is necessary to remove the work to be inspected and returned for correction or replacement. Contractor shall comply with Federal

Acquisition Regulation (FAR) clause 52.212-4, Contract Terms and Conditions-

Commercial Products and Commercial Services, in particular, paragraphs

(a) Inspection/Acceptance, (c) Changes, and (o) Warranty. The clause is incorporated into the contract by reference but is available by full text online at https://www.acquisition.gov/far/part-52#FAR_52_212_4 or this link:

https://www.acquisition.gov/far/part-52#FAR_52_212_4

Conservation Treatment of Outdoor Cultural Resources

Part 52 - Solicitation Provisions and Contract Clauses | Acquisition.GOV

9. TIME FOR COMPLETION

All work shall be completed no later than August 30, 2024. Items 1-3 in Section 7 must be completed no later than November 1, 2023.

10. PERFORMANCE BASED PAYMENTS PER PROJECT MILESTONES

Contract allows for performance-based payments in accordance with FAR 32.1004

(https://www.acquisition.gov/far/part-32#FAR_32_1003). Contractor shall submit invoices only for actual work performed and accepted by the COR. Invoices shall be prepared with sufficient detail to show phases of the work/tasks per the following established project milestones:

Payment

Description of Work Payment Amount

1 Submittal of treatment proposals and proposed schedule to COR. Per COR acceptance, may submit request for payment.

25%

2 Completion of conservation treatments and treatment report. Per COR acceptance, may submit request for payment.

Final Payment

11. ATTACHMENTS

Attachment A: Condition Assessments https://www.acquisition.gov/far/part-52#FAR_52_212_4 https://www.acquisition.gov/far/part-32#FAR_32_1003

140P8323Q0028

Attachment A

Conservation Treatment of Outdoor Cultural Resources

CONSERVATION ASSESSMENT

Object: 321st Observation Squadron Monument.

Date/Artist/Origin: 1930s (?).

Owner/agency: National Park Service, Pearson Air Museum, Ft. Vancouver, Washington.

Contact: Fort Vancouver Nat. Historic Site.

612 E Reserve St Vancouver , WA 98661

Location: Pearson Air Museum

Dimensions: H: 1.03m (max) Width: 1m, Depth: 1.35m.

Materials: cast concrete, bronze, paint

Description: Monument appears to be made from a single, wedge-shaped unit of cast concrete that incorporates, in three-dimensional relief, the insignia of the squadron when based at Pearson Field (an eagle superimposed over the silhouette of Mt. Hood.). All surfaces of the monument are painted and blisters in the paint layer reveal multiple episodes of repainting. It is possible that the original paint layer may still be intact in places.

There is a small inscription on the lower right, back corner of the monument that appears to carry a name and a date, presumably related to who made the monument and when.

There are two cast bronze plaques on the front face of the piece. One is located at the lower edge and is a memorial dedication to Alexander Pearson. It is set into the monument face and the design of its location and spacing suggests that it is original to the monument, although its style suggests that it is older (1920s ?) and may have been originally used elsewhere. The second plaque, also a memorial dedication (to Howard C. French) appears to be attached to the surface of the monument and its crowded appearance suggests that it may have been added after the monument was originally designed and cast.

The monument is set immediately adjacent to a concrete path and surrounded by maintained grass.

Its back is close to a building and a narrow strip of landscaped shrubs.

Conservation Treatment of Outdoor Cultural Resources

Condition: This monument appears to be structurally sound, but neglected in maintenance and therefore in appearance.

The surface paint is dirty and in places blistering, detaching from the under surface, and with some losses. The breaks and lifts in the paint reveal a very thick layer of application, which has also softened the sharp edges of the casting, leaving angles and edges ill-defined. Examination of the blistered areas and areas of paint loss show that dirt and biological growth have started to accumulate between the outer paint layer and the surface of the monument beneath. This is hastening the detachment and loss of the upper paint layer, as well as holding moisture in place against the concrete, which is not beneficial to the long-term condition of the concrete.

Traces of what may be an original paint surface (or certainly a much earlier paint layer) can be seen in areas of upper paint layer loss. The current outer paint layer is also significantly oxidized leaving the red and blue colours with a whitish look to their surfaces.

There is a crack visible in the left wing of the red-painted eagle. While this does not seem to be compromising the monument structurally, it is a point of entry for moisture into the interior of the casting. This could be problematic if this monument includes interior reinforcing steel, as it may promote corrosion and subsequent corrosion jacking of the concrete. There is no indication of rust, or other signs of corrosion, and it is unlikely that any reinforcement would be included in the detailed relief work of the casting. However, without knowing the depth of the crack, damage to any reinforcing elements cannot be ruled out. Moisture caught in this crack during freezing weather could also lead to breaking of the concrete through freeze-thaw action.

There is organic matter adhering to the vertical sides of the monument (in particular grass clippings) and/or accumulating in natural recesses formed by the relief casting and the profiles of the bronze plaques. In some places these accumulations are a mixture of dirt, as well as leaf, grass and mulch debris, and have built up enough to allow moss and lichen to actively grow and begin spreading under the paint layer, causing further paint separation and other deterioration. The debris is also a partial source of the streaks of staining across the white surfaces below the raised relief and over the step element directly above the lower bronze plaque. The debris is likely the result of landscape maintenance activities (grass cutting, for example) and the use of leaf blowers to clear away cuttings.

The lower corners of the monument are chipped with the front left corner having the greatest loss, although this is not recent as it has been painted over. The other nicks and chips are less significant, and the one to the lower, right, rear edge looks fairly fresh. The proximity of these areas to the ground, coupled with the obvious regular maintenance of the landscaping, suggests that these losses are likely the result of accidental contact with mowing equipment and the like.

It is also noticeable that a clearly defined border of grass, approximately 15cm wide around the base of the monument appears to be dead, while the grass beyond this band is thriving. This raises the question as to whether maintenance personnel are using a herbicide around the base to prevent vegetation from growing up against the monument and thus make maintenance, especially mowing, easier. If this is the case, the product being used must be identified and assessed for its possible long-term impact on the monument, as the concrete will likely be absorbing the chemical which could be detrimental to its long-term preservation.

The upper bronze plaque is moderately corroded, dull and dirty, and has no protective coating (lacquer or wax) on its surface. It is missing three of the four metal caps used to hide the attaching screws. The vertical edges are covered with overpaint from the last time the monument was

Conservation Treatment of Outdoor Cultural Resources repainted. Areas of white paint, immediately adjacent to the plaque, are discoloured , most likely the result of staining from debris trapped behind the plaque.

The lower plaque appears to be slightly inset into the monument face. It shares the same condition issues as the upper plaque, although there are missing parts. There is a splash of blue paint on the face of the plaque, which seems to match that of the blue highlighted detail of the relief casting, above.

There is a sprinkler located in the landscaping directly behind the monument and immediately adjacent to the front, right corner. It is not clear whether or not these are wetting the monument, but it seems likely (some of the deposits of organic debris on the upper face were wet enough to show damp stains in the paint, yet the weather has been dry and rainless for several weeks). This will also be accelerating the separation of paint layers and the growth of biological forms, such as the moss and lichen.

The monument shows no signs of vandalism or any other adverse impacts from visitation.

Recommendations: The following recommendations are made to address multiple issues with the preservation of this monument.

1. Check on position and impact of sprinklers on monument and adjust them to avoid spraying the monument.

2. Check with grounds personnel about the possible use of herbicides to control grass growth around the base. If being used it must be identified and assessed for possible long-term impact on the monument, and its use stopped until such assessment has been carried out.

3. Grounds staff should be asked to blow off any debris that might have landed on the monument during grounds work.

4. If mowers and similar equipment are being used immediately next to the monument, care must be taken to avoid accidental contact.

5. As an alternative to chemical control, installing an easily maintained gravel or similar border around the monument to discourage vegetation should be considered.

6. A full refurbishment of the monument is recommended and should include the following:

- Identification of the visible paint layers to determine the composition of the upper layer

(this will aid in choosing a removal method) and that of the lower layers (these may provide valuable information about the history of maintenance, as well as provide guidance regarding original colours, etc.).

- Removal of the old, detaching paint layer and re-painting with a paint recommended for use on concrete.

- Cleaning of both bronze plaques and the application of a protective coating (wax or possibly a lacquer). Replacement of the missing hardware on the upper plaque.

- Repair of the crack in the wing of the relief eagle.

- Re-painting of the monument guided by the results of the paint analysis and historic research.

The above conservation and restoration work should be overseen by a conservator who may carry out most of the work themselves, but may also require the services of subcontractors, such as concrete repair specialists, and metal refinishers. The paint analysis should be carried out by a conservation and/or materials scientist familiar with the challenges of analysis historic paints.

The monument should be checked annually for any obvious signs of deterioration.

Date of Assessment: 07.12.2017

Conservation Treatment of Outdoor Cultural Resources

Front (east) face.

South face.

Conservation Treatment of Outdoor Cultural Resources

Back (west) face. Note rectangular shape in lower right corner which carries near illegible, inscribed names and dates, presumably related to the making of the monument.

North face.

Conservation Treatment of Outdoor Cultural Resources

Crack in wing of relief insignia and visible oxidation and fading of paint. This also shows an example of paint loss, the presence of multiple paint layers and the thickness of the upper paint layer. In the upper right back ground, you can also see another example of extreme blistering, detachment of paint, and the accumulation of organic matter.

An example of heavy accumulation of organic debris. The dark stain on the blue painted area above the debris is dampness, caused by the retention of moisture by the debris. This is likely exacerbating the loss of paint that can be seen along the edge of the red painted area, exposing bare concrete.

Conservation Treatment of Outdoor Cultural Resources

Object: Carlton Foster Bond Memorial.

Date/Artist/Origin: 1996, artist: R. W. “Bill” Bane.

Owner/agency: National Park Service, Pearson Air Museum, Ft. Vancouver, Washington.

Contact: Fort Vancouver Nat. Historic Site.

612 E Reserve St Vancouver , WA 98661

Location: Pearson Air Museum

Dimensions: H: 2m (max) Width: 0.56m, Depth: 0.8m

Materials: cast bronze, stone

Description: Slightly smaller than life-size, cast bronze figure of an aviator, presumably Carlton Foster Bond. Statue is mounted on a rough, stone pedestal with its east facing side partially dressed to carry an inscription. The inscription is highlighted with a stain or paint.

Condition: This monument appears to be structurally sound and overall in good condition. The surface of the bronze has become pale green in colour due to the formation of a layer of copper corrosion varying in thickness from slight to heavy. This has formed as the original protective coating has been weathered away, exposing the metal surface to water, oxygen, air pollution and general dirt.

The toe of the proper left boot, the raised proper right hand and the nose, all show signs of polishing and wear, typical of having been touched repeatedly by visitors. In these locations, bare metal is showing.

It is unclear when the figure was last maintained (for example waxing), and it is possible that its protective finish has not been maintained since it left the foundry. There is also some accumulated surface dirt, but in general the piece is clean with no signs of vandalism.

The pedestal has areas of biological growth on its surface (mostly algae and some small lichens).

Conservation Treatment of Outdoor Cultural Resources

Recommendations: As the artist of the sculpture may still be alive, ethical practice requires that efforts be made to contact him to inform him of any possible treatment of the piece, and most importantly, request information about its original finish and his intent for its appearance over time.

Some effort was made to ascertain whether Bill Bane is still alive (a birthdate located for him would indicate that he would now be 75 years old) but without conclusive results. Two websites found for him no longer exist and an email address also bounced. [redacted; potential contact information will be provided upon contract award] Further efforts to contact Mr. Bane are beyond the scope of this assessment, but this must be pursued further before deciding on the surface treatment of the piece. Locating the foundry he used to fabricate his pieces would also be a good source for information on his preferred surface finish.

A brief survey of published photographs of Bane’s work (which are numerous with many located in our general region) suggest he preferred a classic, dark, warm patina, with little if any green colour for outdoor pieces of this type. If this is the case, then the sculpture requires refurbishment which may be best carried out by the foundry that fabricated the piece. A conservator should also be included as a consultant in this process.

As a preliminary step, it is recommended that the piece be cleaned of surface dirt, the green corrosion layer reduced/removed as much as possible without disrupting any remaining, underlying, original patination, and the piece given two coats of paste wax. This will act to reduce and stabilize the on-going corrosion until a decision is made about any possible compete refinishing. This process should also include cleaning of the stone pedestal (no wax or other surface coating is required for the stone). A basic cleaning of this type will also serve to test the extent of the corrosion and whether a full refinishing is needed.

It is possible that after this basic cleaning, sufficient original surface is uncovered that the piece is returned to an acceptable appearance. Until cleaning tests are carried out, it is impossible to say how close a basic cleaning will come to returning the sculpture to its original appearance.

Conservation Treatment of Outdoor Cultural Resources

East face.

North face.

West face.

Conservation Treatment of Outdoor Cultural Resources

Detail of the surface showing buildup of surface corrosion over original finish.

South face

The base of the sculpture showing biological growth, including algae and lichen.

Conservation Treatment of Outdoor Cultural Resources

Object: Chkalov Transpolar Monument

Date/Artist/Origin: 1975

Owner/agency: National Park Service, Pearson Air Museum, Ft. Vancouver, Washington.

Contact: Fort Vancouver Nat. Historic Site.

612 E Reserve St

Vancouver, WA 98661

Location: Pearson Air Museum

Dimensions: H: 4.5m approximately Width:

3.76m, Depth: 0.58m

Materials: cast bronze, pebbles, concrete, glazing putty (?)

Description: Large monument marking the landing by Soviet Union pilot, Valery Chkalov, and his air crew at Pearson Field in 1937, after their transpolar flight from Moscow. The structure is a tall, truncated triangle-shaped, concrete wall facing north and south, with an arched cutout at its base. It is set on a slightly domed platform of cast concrete inlayed with metal (bronze?) lines representing longitude and latitude radiating out from a central point (the north pole) situated directly below the central, vertical axis of the monument. This setting is bordered on the south side by some shallow steps leading down to a path and the main grassy area of the airfield, while the north side is defined by a pathway, benches and an informational sign. There are two hand rails leading down the steps on the south side, along with a series of 12 small cast bronze plaques (recognizing local “patrons” of the monument), spaced evenly along the lower step and set into the concrete.

The monument appears to have been cast in several pieces (slabs) and assembled on site.

The north and south faces of the monument, as well as the east and west facing edges, are covered in small, river-rounded pebbles pressed into a cement facing, with the north and south pebble-covered areas being slightly inset from bordering bands of smooth concrete.

On the north face, there are three cast bronze plaques. The uppermost is round and marks the 1987, 50th anniversary commemoration of the flight, and depicts the monument in the center, showing the north face with its two original plaques. The middle plaque is square and depicts an aerial view of the north pole with associated landforms and an ANT-25 aircraft positioned above the pole, all in cast relief. The

Conservation Treatment of Outdoor Cultural Resources lower cast bronze plaque is rectangular and carries the dedication text. The middle and lower plaques are original to the 1975 monument. The upper one presumably dates to 1987. The two lower plaques are set into the monument and are sealed with what appears to be glazing putty. The height of the upper plaque made it impossible to determine what materials have been used for its setting.

On the south face, there are three plaques. The two upper ones, in line with each other, appear to be original to the monument (1975) and depict a telegram in Cyrillic text (left plaque) and a translation of the telegram (right plaque). Both are cast in relief in bronze, set into the monument and also sealed in with glazing putty. The third plaque, a brushed stainless-steel rectangle, it etched or printed with black text and recognizes persons responsible for founding the monument. It was presented by the families of the original Soviet flight crew and has been added relatively recently (a photograph found on line and dated 2006 shows the south face with only the two original plaques present). This lower plaque is set into the monument, held in place with stainless steel screws at each corner, and set with a cementitious grout or mortar.

According to information on the lower plaque on the north side, three of the bronze plaques on the monument were cast in the USSR, namely the central plaque on the north side (depicting the plane over the north pole), and the two bronze plaques on the south side (the depiction of the telegram and the translation plaque).

Condition: It should be noted that the top of the monument and the upper areas of all four sides, were assessed from ground level and not from a ladder or similar.

This monument appears to be structurally sound and overall in good condition.

There are scattered spots where the pebbles are missing from the surface, but not to a major extent.

Several pebbles were tested to see if they were loose, but none were found to be so. The loss of the pebbles may be due in part to freeze-thaw activity.

There is slight biological growth across the all faces of the monument, especially in between the pebbles.

The smooth concrete areas are discoloured from general age and accumulated dirt, but not to a significant extent, except for the top-most bands which show streaking from dirt presumably being washed off the horizontal top of the monument. While somewhat unsightly, this is not a major aesthetic issue at this time.

All bronze plaques (except for the round, 1987 one on the north face) need basic surface cleaning and re-waxing. The putty-like compound sealing in the plaques original to the monument are cracking and shrinking and in need of replacement.

The left-hand plaque on the south face has iron corrosion stains along its bottom edge, and these are slowly staining the concrete and pebbles immediately below. It is not clear whether these are coming from iron hardware associated with the installation/setting of the plaque, or from deeper within the monument.

The stainless-steel plaque on the south side is slightly distorted and not 100% flat to the face, but this may be due to the thinness of the material and its installation on what may be a slightly unlevel surface behind it (presumably the monument surface was cut and dressed flat in that area when it was added).

This is not an issue of concern now and is noted here for future reference purposes.

Conservation Treatment of Outdoor Cultural Resources

The handrails on the south side are worn, scraped and scuffed with a pattern typically caused by skateboards being ridden down the rail. The loss of surface coatings due, to the scraping action of skateboards, has led to some minor surface corrosion of the rails.

Under the lip of the bounding band of concrete at the top of the north side, are three rectangular strips that appear to be one half of pieces of Velcro™, or Velcro-like tape stuck to the surface. These are presumably left over from the unveiling of the upper plaque - the most recent addition to the monument.

There are scattered, small cracks visible in the concrete structure of the monument, but none of these appear to be compromising the structural integrity of the monument at this time.

Recommendations: The original bronze plaques should be cleaned, waxed and the cracking putty replaced, possibly with a cementitious grout, rather than a putty. This I would consider to be a priority.

The source of the iron corrosion coming out below the left-hand plaque on the south face needs to be investigated further and treated. This could be done at the same time as the sealing compound is replaced.

The losses to the pebble facings are not major, but could be replaced for purely aesthetic reasons.

Similarly, the flat, smooth, concrete borders around each face could be cleaned.

The residual Velcro™ tape pieces on the upper north side need to be removed.

Consideration should be given to cleaning the entire monument to remove the biological growth and general dirt, and then possibly coating the monument’s surface (except for the plaques) with a water repellent. This will reduce discolouration of the smooth areas from accumulation of dirt and biological growth, as well as protect the concrete from saturation by water, which eventually may become a problem because of freeze-thaw action. If such work is carried out, replacing the missing pebbles may also be worth undertaking.

The handrails on the south side need to be refinished to repair the damage caused by skateboarders.

Conservation Treatment of Outdoor Cultural Resources

North face

East face

South face

West face

Conservation Treatment of Outdoor Cultural Resources

Plaques on south face.

South face, left hand plaque, showing cracked and shrinking sealing compound around plaque edges, as well as buildup of iron corrosion, presumably originating from inside or behind the plaque.

Example of missing pebbles. Slight biological growth can also be seen.

Damage to hand rails from skateboarding.