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SurfaceOps

✅ 100% Compliant BMP 5/5 SAMPLE DATA

Post-Action Compliance Report — Limestone Façade Soft Wash

PAR-SAMPLE-001 • Rivera Exterior Solutions • April 14, 2026

Report #

PAR-SAMPLE-001

Property

123 Sample Plaza, Suite 400

Service Date

April 14, 2026

Surface Area

3,200 sq ft

Method

Soft Wash

Duration

2h 45m

Status

● Completed

Compliance Score

100%

<\!-- Section 1: Environmental Perimeter -->

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Environmental Perimeter

BMP checklist, weather conditions, and drain protection measures

BMP Checklist — 5/5 Complete

✅ Work area perimeter inspected and contained prior to application PASS

✅ Storm drain plugged with rubber drain plug before chemical application began PASS

✅ Wet vac on standby for emergency spill containment; tested prior to job start PASS

✅ Rinse water collected via boom and directed to sanitary sewer — no discharge to storm PASS

✅ SDS sheets on-site for all three chemicals; operator reviewed PPE requirements pre-task PASS

Weather Conditions at Time of Service

Temperature 72°F (22.2°C) — within acceptable soft wash range

Sky Conditions Partly cloudy; no precipitation recorded during service window

Wind Speed / Direction 4 mph NW — low drift risk; no overspray mitigation required beyond standard

Relative Humidity 58% — suitable for chemical dwell; evaporation rate moderate

Drain Protection & Disposal

Drain Protection Rubber plug installed in nearest storm drain inlet prior to SH application. Plug removed only after full rinse cycle and water reclaim confirmed.

Wastewater Disposal Rinse water collected via collection boom; vacuumed and directed to sanitary sewer connection on property. No effluent reached the municipal storm system.

Spill Standby Equipment Wet vac (6-gallon, 1.5 HP), absorbent pads (qty 6), neutralizer spray (citric acid 10% solution)

<\!-- Section 2: Substrate Protection -->

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Substrate Protection

Surface specification, dwell times, and pH entry/exit verification

Surface Specification

Surface Type 🧱 Natural Limestone Light-colored, exterior façade (porous, sedimentary)

Cleaning Method Soft Wash Downstream injection at low pressure (<100 PSI at nozzle)

Contaminants Removed Biological growth (algae, lichen colonies); atmospheric carbonation staining; general airborne particulate buildup

Pre-Service Inspection Surface inspected for efflorescence, hairline cracks, and mortar joint integrity. Minor surface efflorescence noted in lower panel; documented and left intact per scope of work. No structural compromise identified.

Application Parameters

Parameter	Value	Notes
SH Concentration	0.6%	Downstream injection from 12.5% stock; diluted inline
Surfactant Mix Rate	2 oz / gal	Ecover Pro-Clean Concentrate; biodegradable, non-ionic
Dwell Time	5 min 30 sec	Timed from last application stroke; no run-off before dwell complete
Application Pressure	<100 PSI	Soft wash nozzle; no impact pressure on limestone face
Rinse Pressure	800 PSI	Post-dwell rinse from 18" standoff to clear residual SH and surfactant
Surface Area Treated	3,200 sq ft	All four elevations of façade; ground level to 22 ft

Volume Summary

Mix Type	Gallons Applied	% of Total
SH Mix (0.6% + surfactant)	110 gal	79%
Post-Dwell Rinse (fresh water)	30 gal	21%

140 gal

Total Applied

3,200

Sq Ft Treated

0.044

Gal / Sq Ft

5m 30s

Dwell Time

pH Verification — Entry & Exit

pH Entry 7.2 Acceptable range: 6.0 – 9.0 ✅ In Range

pH Exit 7.4 Acceptable range: 6.0 – 9.0 ✅ In Range

pH measured at storm drain collection point using calibrated digital pH meter (ATC-enabled). Exit pH within 0.2 units of entry baseline — confirms full neutralization of SH residual post-rinse.

<\!-- Section 3: Chemical Documentation -->

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Chemical Documentation

SDS cards and application log for all chemicals used on this job

Safety Data Sheets — On-Site

⚠️

Sodium Hypochlorite 12.5% Solution SDS ON SITE

Applied concentration: 0.6% (diluted via downstream injector from 12.5% stock)
GHS Hazard class: Oxidizer, Corrosive, Aquatic Hazard — Acute Cat. 1
PPE required: Nitrile gloves (min 8-mil), eye protection, splash-resistant apron
Spill response: Dilute with large volume of water; neutralize with sodium thiosulfate or citric acid solution; do not discharge to storm drain
Storage: Stock kept in closed container in ventilated truck compartment; temperature below 85°F at time of job

⚗️

Ecover Pro-Clean Concentrate (Surfactant) SDS ON SITE

Mix rate applied: 2 oz per gallon of SH mix
Chemistry: Non-ionic surfactant blend; plant-derived; biodegradable within 28 days per OECD 301B
GHS Hazard class: Not classified as hazardous under GHS (low-hazard formulation)
PPE required: Standard nitrile gloves; avoid prolonged skin contact
Compatibility: Verified compatible with SH at 0.6%; no exothermic reaction observed

💧

SurfaceOps Neutralizer Rinse (Citric Acid 5% Solution) SDS ON SITE

Application: Post-dwell final rinse additive; ensures pH neutralization at drain collection point
GHS Hazard class: Mildly irritating; non-corrosive at 5% concentration
PPE required: Standard gloves; no respirator required below 10% concentration
Disposal: Safe to discharge to sanitary sewer at working concentration; verified with operator handbook v3.2

Application Log

Chemical	Stock Conc.	Applied Conc.	Volume Used	Phase
Sodium Hypochlorite SDS #1 — Oxidizer class	12.5%	0.6% (diluted)	5.3 gal stock	Application pass
Ecover Pro-Clean SDS #2 — Non-ionic surfactant	Concentrate	2 oz / gal	1.72 gal (220 oz)	Mixed with SH pass
SurfaceOps Neutralizer Rinse SDS #3 — Citric acid 5%	5%	5% (as supplied)	1 gal in rinse	Post-dwell final rinse

<\!-- Section 4: Photo Evidence -->

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Photo Evidence

GPS-stamped before, during, and after documentation

Before / After — North Elevation

Before Treatment

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IMG_PRE_001.jpg North elevation — algae + lichen visible

GPS: 34.052234, -118.243685 | 07:08 AM

After Treatment

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IMG_POST_001.jpg North elevation — biological growth cleared

GPS: 34.052234, -118.243685 | 09:41 AM

Before / After — South Elevation

Before Treatment

🖼️

IMG_PRE_002.jpg South elevation — carbonation staining, lower panels

GPS: 34.052198, -118.243612 | 07:14 AM

After Treatment

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IMG_POST_002.jpg South elevation — staining removed, mortar joints intact

GPS: 34.052198, -118.243612 | 09:44 AM

During Application — Chemical & Drain Documentation

Drain Plug Installed

🖼️

IMG_DRAIN_001.jpg Storm drain inlet — rubber plug seated, pre-application

GPS: 34.052234, -118.243685 | 07:02 AM

Chemical Application — Dwell Phase

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IMG_APPLY_001.jpg Downstream injection in progress — east elevation mid-section

GPS: 34.052240, -118.243700 | 08:22 AM

GPS Location Verification

📍

34.052234, -118.243685

123 Sample Plaza, Demo District, CA 90210 — coordinates match job address on file

✅ GPS Verified

<\!-- Section 5: Operator Certification -->

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Operator Certification

Signed attestation, license verification, and compliance statement

I, M. Rivera, Lead Technician of Rivera Exterior Solutions, hereby certify that all work described in this Post-Action Report (PAR-SAMPLE-001) was performed in full compliance with applicable local, state, and federal environmental regulations. All chemicals were applied within manufacturer-specified concentrations and dwell times. Wastewater was contained and disposed of through the sanitary sewer system in accordance with applicable MS4 permit requirements. No unauthorized discharge to the municipal storm drain system occurred. All information recorded in this report is accurate and complete to the best of my knowledge.

Operator Details

Company Rivera Exterior Solutions

Technician M. Rivera, Lead Technician

Operator License #WC-DEMO-2024

Service Date April 14, 2026

Report Generated April 14, 2026, 10:03 AM — via SurfaceOps

Signatures

M. Rivera

Lead Technician Signature

Property Manager / Client (optional)

Not required for sample report

Clock In

7:02 AM

April 14, 2026 — GPS confirmed on-site

Clock Out

9:47 AM

April 14, 2026 — Site cleared and equipment stowed

⏱ Total on-site time: 2h 45m

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