810F250

Sometimes a car does not have to be parked for a year. [ATTACH]20311[/ATTACH] Rick I would like to call you sometime over the weekend.

Philip is there a requirement for smaller manufacturers in the US to meet these standards UL-1776 specs? Thanks for posting

Happy Birthday Beth, enjoy...

What little Chemistry I remember, both the percarbonate and the Hypochlorite are oxidising agents, they will both oxidise organic matter, hypochlorite has more oxidising power linked to the reactivity of the oxidising ion.(as to how these oxidisers work on mold and mildew on non-porous surfaces , thats a different story) Chlorine is further to the right of the periodic table than Oxygen, and its oxidizing power is higher.(it also has something to do with the bond formation of oxygen in the percarbonate compounds, not much energy to break them) Bromine is also an oxidiser used for sanitizing hot tubs , it is lower down the periodic table compared to chlorine and thus less reactive.

* * A Griffs Services melodramatic video production only available on desktop.

Thanks Tim for viewing and comment, I hear you on the "time" frame.. there were so much more problem areas that I wanted to educated the "blind" homeowner to, but my threshold was 2 mins,.... I guess it can become boring for us (powerwash contractors) to watch, as we know the problem areas.

Was wondering how they maintained strength.

Did not know that, but the doo look like hose you find on electric 1500 psi units

In addition to the fellow comments, I would think that sewer jetter hose are one wire,... two wire can take more of a beating, and it it can dish out one too (lol, a good workout)

That was probably his pump head pressure vs the pressure before the gun, must be a hot water machine, some loss in coil ?

Actual measurements, always good to have. Think about the Horsepower that is lost with that 500 psi loss, the fuel etc too. With a flow of 8gpm and if concrete cleaning pressures needed, I recommend 1/2" hose. Anybody running 5/8" ?

Deck looks great Tonyg.

Short video of powerwashing projects that can be completed to spruce up your home and bring it "Back to Life" this spring.

Always great work Shane. Special Blend?

I heard you were thinking of making a trip to the land of the Scarlet Ibis and Cocrico, you should go enjoy.

I agree, the use of detergents will offer a better cleaning and the duration of clean will be longer. Sodium Hypochlorite and other oxidisers, remove the color from the spores and also kill the spores and optically brighten the surface, the surfactants in a complex detergent modify the water properties and forms a bond between the detergent and dirt/pollutant allowing it to release from the substrate (amongst other things), after which you rinse.

One things for sure, those shutters are going to hemorrhage red on everything below. Rinse, rinse and rinse

OK i said it mission and vision, ...........action to my own suggestions. (HELP: I cant do this alone and no one person or small group of people should ..............., I know we all may have different opinions, but that should serve to make a BMP manual better) How about this for a cover........thoughts? [ATTACH]19680[/ATTACH] Draft BMP Doc.pdf

I don't know all the history of the documents, ......there is a "big effort" requirement, I will assist as best possible. ............................................................................................................................................ I asked in a earlier post what was the construction BMP mesh/micron requirements, in reviewing some construction industry BMP's storm inlet protection media material specs I came across this info: They are commonly geo-textiles: Slit Dike (gravity flow sediment removal) offers approximately 40 US mesh/420 micron sediment filtering Curb Inlet Protector (gravity flow sediment removal) 8 oz/sd.yd offers approximately 80 us mesh/180 micron Pipe Sock (pumped flow sediment removal) 11 oz/sq.yd offers approximately 100-140 US Mesh/ 100-150 Microns Dewatering Bag (pumped flow sediment removal) 8 oz/sq.yd offers approximately 80 US Mesh/ 180 microns Size of suspended particulate appears to be commonly addressed with respect to storm water discharges, I have not seen any document reference to quantity (mg/l) or ppm requirements. In contrast the average sanitary sewer limits of Suspended Solids may vary, but one POTW limit in Maryland is 400mg/l, but micron size not mentioned.

I recommend that the existing PWNA Cosmetic Cleaning BMP's manual be reviewed in chronological order (after we identifying the exact document to be reviewed, pdf file or word doc),..... though forum members can review pages that are currently being posted, there is a greater chance of page omission. I recommend that an alternative photo be used here, possibly one showing no debris at the inlet (showing water draining into storm inlet it is not necessary, as this may conjure thoughts that the water must be of a certain clarity, clear water is not necessarily safer for the environment vs mildly turbid water) , this photo is better suited to show the need for street/parking lot sweeping. The phrase "Nothing Down the Drain But Rain", is a contradictory phrase, although I not aware of its inception/history and though it may have been developed in earnest, the reality is, it is not attainable, the EPA and localities allow exempt, permitted and non-permitted discharges to the "drain but rain" Recommend that no photo be placed at this point in manual or if one is to be placed, the alternative suggested above. {I am taking a steep back, looking at the big picture, .....................} I think there is a great deal of information in the current PWNA Cosmetic Cleaning BMP manual, (I am reviewing the pdf version), the manual appears as a combination of pressure cleaning BMPs and AHJ training. I dont believe the two should be heavily inter mixed as they currently are, there maybe some overlap but in my opinion there is to much non-direct information, which is not necessary to be placed in a Contractors Association Cosmetic Cleaning BMP Manual. A manual should be as clear as possible. The PWNA can engage in providing training to AHJ's and I feel this should be entertained. The PWNA Cosmetic Cleaning BMP manual should be focused with an objective being: Concise in identifying/recommending, reasonable rational and logical Best Management Practices for various cleaning circumstances, that ultimately contractors have researched, developed, tested/adopted, re-evaluated and validated to minimize negative impact to the environment from operations with necessary consultation and assistance form internal and external knowledge/beneficial sources. .......................................................................................................................................................................................................................... {I am thinking out loud here:} What is the historical perspective of BMP's? ,and in particular the PWNA proposed BMP's ?, we need to identify a vision for the manual, and ultimately its mission Hope this post can be understood in the positive nature it was intended.

Here are some other EPA Storm Water exemptions Allowable Non-Storm Water Discharges: 1. Discharges from fire fighting activities 2. Fire hydrant flushing (testing) 3. Potable water including water line flushing (testing) 4. Uncontaminated air condition or compressor condensate 5. Irrigation drainage 6. Landscape watering, provide all pesticides, herbicides, and fertilizers have been applied in accordance with manufacturers instructions 7. Pavement wash water where no detergents are used and no spills, leaks of toxic or hazardous materials have occurred (unless all spilled material has been removed) 8. Routine external building wash down which does not use detergent 9. Uncontaminated groundwater or spring water 10. Foundation or footing drains where flows are not contaminated with process materials 11. Incidental windblown mist from cooling towers that collects on rooftops or adjacent portions of your facility, but NOT intentional discharges from cooling towers Agreed. More peer reviews the better.

I have not studied the BMP's either , I welcome the review and hope that all PWNA members, and BBS members and guest follow this thread and make comments. John, one of the key drivers of Snow and Ice Management continued service is its importance , .....ie safety, commerce/trade, continued government operations, national security etc Operations are reviewed and/or changing seasonally. Lets definitively identify what the PWNA doc would have, and review 20 US mesh is 841 microns 40 US mesh is 420 microns What is the current Storm Inlet Protection BMP mesh/micron criteria for land construction?

While reviewing links on the PWNA's current environmental page related to Updated BMP Documents 2011 I noticed that there is different content for the various format versions of the BMP. (this creates confusion , especially when the word doc is compared to the pdf versions, the filtering requirements are different as I mentioned earlier (initially I had not realized that the doc I found on the web was still current to the PWNA's website), the powerpoint version does not open in powerpoint but rather is a copy of the pdf version (they both have the same web link). Robert, Post #4 and #5 made in thread seem to be following the pdf versions of the 2011 Updated BMP's , but not in order, this creates some confusion to followers, after your post #2 which ended with Always Filter Waste Water, the next review topic should be Waste Water Capture (lower portion of page 7 in pdf version of BMP document). I suggest streamlining the current environmental page BMP web links discrepancies on the PWNA website and identiy in no uncertain terms what is the screen mesh suggested requirement, also when identifying mesh sizes always reference the equivalent micron size. Lets continue from page 7 ?

Thank you John T and Jim G Comment on Snow and ice management. Snow and ice management services (which I also provide) has grown exponentially with urbanization,...... the influence of products and techniques of yesteryear have/are being analyzed with respect to efficiency and environmental impact, improvements are being made to reduce negative impact, cities are investigating environmental consequences, monitoring and making changes to products, equipment and operating procedures. One of the key drivers of Snow and Ice Management continued service is its importance , .....ie safety, commerce/trade, continued government operations, national security etc here is the link to the photoed epa document above. Another EPA Doc: Managing Highway Deicing to prevent Contamination of Drinking Water Changes are already being implimented for Snow and Ice operations, ongoing studies are being conducted; manuals are being written and BMP's are being adopted, ...............uncovered/unsecured salt stock piles are becoming a taboo,....... you may or may not have observed newer norms of Snow and Ice mangement today..................................namely pre-treatment,...... pre-wetting,...... anti icing, and .......alternative deicing materials

Thank you John T and Jim G Comment on Snow and ice management. Snow and ice management services (which I also provide) has grown exponentially with urbanization,...... the influence of products and techniques of yesteryear have/are being analyzed with respect to efficiency and environmental impact, improvements are being made to reduce negative impact, cities are investigating environmental consequences, monitoring and making changes to products, equipment and operating procedures. One of the key drivers of Snow and Ice Management continued service is its importance , .....ie safety, commerce/trade, continued government operations, national security etc here is the link to the photoed epa document above. Another EPA Doc: Managing Highway Deicing to prevent Contamination of Drinking Water Changes are already being implimented for Snow and Ice operations, ongoing studies are being conducted; manuals are being written and BMP's are being adopted, ...............uncovered/unsecured salt stock piles are becoming a taboo,....... you may have observed newer norms of Snow and Ice mangement namely .................pre-treatment, pre-wetting and anti icing