CONSTRUCTION GENERAL PERMIT RISK ASSESSMENT R FACTOR

Construction General Permit Risk Assessment R Factor -PDF Download

  • Date:21 Mar 2020
  • Views:16
  • Downloads:0
  • Pages:14
  • Size:2.13 MB

Share Pdf : Construction General Permit Risk Assessment R Factor

Download and Preview : Construction General Permit Risk Assessment R Factor


Report CopyRight/DMCA Form For : Construction General Permit Risk Assessment R Factor


Description:

construction general permit risk assessment r factor calculation notification national pollutant discharge elimination system npdes general

Transcription:

R Factor for 2 year construction 35 x 100 x 2 years 70. R Factor for 0 5 year construction 35 x 28 4 9 94, R Factor for complete project duration 2 5 years 70 9 94 79 94. 2 Find the R value of a construction project in San Diego California with a duration. of June 30 2012 to November 1 2013 1 333 years,Figure 1 Erosivity Index Zone Map. The EI distribution zone is 25,Table 1 Erosivity Index Table. EI percentage June 30 to December 31 100 57 2 42 8. EI percentage January 1 to June 30 57 2 0 0 57 2, Total EI percentage for 1 year duration 42 8 57 2 100. EI percentage June 30 to November 1 0 333 year 69 4 57 2 12 2. Figure 4 Isoerodent Map of California,Interpolated annual erosion index for location 25.
R Factor for 1 year construction 25 x 100 25, R Factor for 0 333 year construction 25 x 12 2 3 05. R Factor for complete project duration 1 333 years 25 3 05 28 05. United States Office of Water EPA 833 F 00 014,Environmental Protection 4203 Revised March 2012. Agency Fact Sheet 3 1,Stormwater Phase II,Final Rule. Construction Rainfall Erosivity,Stormwater Phase II. Final Rule, Fact Sheet Series T he 1972 amendments to the Federal Water Pollution Control Act later referred to as the Clean.
Water Act CWA prohibit the discharge of any pollutant to navigable waters of the United States. unless the discharge is authorized by a National Pollutant Discharge Elimination System NPDES. permit Because construction site stormwwater runoff can contribute significantly to water quality. Overview problems the Phase I Stormwater Rule imposed a requirement that all construction sites with a planned. 1 0 Stormwater Phase II land disturbance of 5 acres or more obtain an NPDES permit and implement stormwater runoff control. Proposed Rule Overview plans Phase II extends the requirements of the stormwater program to sites of between 1 and 5 acres. Small MS4 Program The Rainfall erosivity waiver allows permitting authorities to waive those sites that do not have adverse. water quality impacts,2 0 Small MS4 Stormwater,Program Overview. What is Erosivity,2 1 Who s Covered Designation,and Waivers of Regulated Small. 2 2 Urbanized Areas Definition, E rosivity is the term used to describe the potential for soil to wash off disturbed devegetated earth. during storms The potential for erosion is in part determined by the soil type and geology of the. site For instance dense clay like soils on a glacial plain will erode less readily when it rains than will. and Description sandy soils on the side of a hill Another important factor is the amount and force of precipitation. expected during the time the earth will be exposed While it is impossible to predict the weather several. Minimum Control Measures months in advance of construction for many areas of the country there are definite optimal periods. such as a dry season when rain tends to fall less frequently and with less force When feasible this is. 2 3 Public Education and, Outreach the time to disturb the earth so that the site can be stabilized by the time the seasonal wet weather. returns There are many other important factors to consider in determining erosivity such as. 2 4 Public Participation freeze thaw cycles and snow pack. Involvement, 2 5 Illicit Discharge Detection How Is Site Erosivity Determined.
and Elimination,2 6 Construction Site Runoff, Control T he Universal Soil Loss Equation USLE was developed by the U S Department of Agriculture. USDA in the 1950s to help farmers conserve their valuable topsoil The methodology for. determining if a site qualifies for the erosivity waiver provided in this guide is based on the USDA. 2 7 Post Construction Runoff, Control Handbook 703 Predicting Soil Erosion by Water A Guide to Conservation Planning With the Revised. Universal Soil Loss Equation RUSLE dated January 1997 Note that a more updated version of. 2 8 Pollution Prevention Good USLE the Revised USLE Version 2 RUSLE2 is available and can be used as an alternative method. Housekeeping, for determining if a site qualifies for the erosivity waiver Information about the RUSLE2 computer. program is provided later in this fact sheet,2 9 Permitting and Reporting. The Process and Requirements, Using a computer model supported by decades worth of soil and rainfall data USDA established.
2 10 Federal and State estimates of annual erosivity values R factors for sites throughout the country These R factors are. Operated MS4s Program, Implementation used as surrogate measures of the impact that rainfall had on erosion from a particular site They have. been mapped using isoerodent contours as shown in Figures 2 through 5. Construction Program, 3 0 Construction Program USDA developed the Erosivity Index Table EI Table provided here in Table 1 to show how the. Overview annual erosivity factor is distributed throughout the year in two week increments Table 1 is based on. 3 1 Construction Rainfall 120 rainfall distribution zones for the continental U S Detailed instructions for calculating a project. Erosivity Waiver R factor are provided later in this fact sheet. Industrial No Exposure,4 0 Conditional No Exposure. Exclusion for Industrial Activity 1, This revised fact sheet corrects errors identified in calculating the R factor from the 2001 version and includes. updated information about the USLE, Fact Sheet 3 1 Construction Rainfall Erosivity Waiver Page 2.
The Stormwater Phase II rule allows permitting authorities to. waive NPDES requirements for small construction sites if the Examples. value of the rainfall erosivity factor is less than 5 during the. period of construction activity see 122 26 b 15 i A Note 1 Construction started and completed in one. that the permitting authority has the option to not allow waivers calendar year. for small construction activity, Find the R factor value of a construction site in Denver Colorado. Assume the site will be disturbed from March 10 to May 10 of the. If the R factor for the period of construction calculates to less. than 5 and the permitting authority allows the use of the waiver. the site owner may apply for a waiver under the low rainfall The EI distribution zone is 84 Figure 1 Referring to Table 1 the. erosivity provision of the applicable EPA or State NPDES project period will span from March 1 from Table 1 the closest. regulations When applying owners are encouraged to consider date prior to the actual March 10 start date to May 15 from Table. other site specific factors such as proximity to water resources 1 the closest date after the actual May 10 end date The difference. and the sensitivity of receiving waters to sedimentation impacts in values between these two dates is 9 7 9 9 0 2 9 7 Since the. The small construction operator must certify to the permitting annual erosion index for this location is about 45 interpolated from. authority that the construction activity will take place during a Figure 2 the R factor for the scheduled construction project is 9 7. period when the rainfall erosivity factor is less than 5 of 45 or 4 4. The start and end dates used for the construction activity will be Because 4 4 is less than 5 the operator of this site would be able to. the initial date of disturbance and the anticipated date when the seek a waiver under the low rainfall erosivity provision. site will have achieved final stabilization as defined by the permit. respectively If the construction continues beyond this period the 2 Construction spanning two calendar years. operator will need to recalculate the Erosivity Index for the site. based on this new ending date but keeping the old start date and Find the R factor value for a construction site in Pittsburgh. either resubmit the certification form or apply for NPDES permit Pennsylvania Assume the site will be disturbed from August 1 to. coverage April 15, The EI distribution zone is 111 Figure 1 Referring to Table 1 the. What Other Factors Can Affect Waiver project period will span from July 29 from Table 1 the closest date. Availability and Eligibility prior to the actual August 1 start date to April 15 The difference in. values between July 29 and December 31 is 35 100 65 0. PA has established the R factor of less than 5 as the criteria. 35 0 The difference between January 1 and April 15 is 8 The. for determining waiver eligibility However since the intent total percentage EI for this project is 43 35 8 43 Since the. is to waive only those construction activities that will not annual erosion index for this location is 112 interpolated from. adversely impact water quality State and Tribal permitting Figure 2 the R factor for the scheduled construction is 43 of 112. authorities have considerable discretion in determining where or 48. when and how to offer it They can establish an R factor. threshold lower than 5 or they can suspend the waiver within an Since 48 is greater than 5 the operator of this site would not be able. area where watersheds are known to be heavily impacted by or to seek a waiver under the low rainfall erosivity provision. sensitive to sedimentation They can also suspend the waiver. during certain periods of the year They may opt not to offer the. waiver at all NOTE This waiver is not available to sites that will. disturb more than 5 acres of land large construction. How Do I Compute the R factor for My Project, What if My Site Is Not Eligible 1 Estimate the construction start date This is the day you. I f your site is not eligible for a waiver you must submit a. Notice of Intent or whichever type of application is required. to obtain coverage under the applicable NPDES construction. expect to begin disturbing soils including grubbing. stockpiling excavating and grading activities,2 Estimate the day you expect to achieve final. stormwater permit and comply with its requirements For stabilization as defined by your permitting authority s. information about EPA s Construction General Permit CGP see regulations or NPDES construction stormwater permit. http www epa gov npdes stormwater cgp State program over all previous disturbed areas This is your. information is available at construction end date, http cfpub epa gov npdes contacts cfm program id 6 type.
STATE 3 Refer to Figure 1 to find your Erosivity Index EI Zone. based on your geographic location, Fact Sheet 3 1 Construction Rainfall Erosivity Waiver Page 3. 4 Refer to Table 1 the Erosivity Index EI Table Find the Where Can I Get Help. number of your EI Zone in the left column Locate the EI. values for the dates that correspond to the project start and A copy of Chapter 2 Rainfall Runoff Erosivity Factor. end dates you identified in Steps 1 and 2 If your specific R from the USDA Handbook 703 Predicting Soil. date is not on the table either interpolate between dates to Erosion by Water A Guide to Conservation Planning. obtain your EI value or use the closest date prior to your With the Revised Universal Soil Loss Equation RUSLE. proposed start date and the closest date after your proposed January 1997 is available on EPA s web site at. end date Subtract the start value from the end value to find http www epa gov npdes pubs ruslech2 pdf. the EI for your site The maximum annual EI value for a Information about RUSLE2 and a download of the. project is 100 NOTE If your project lasts for one year program is available at. or more your EI value is 100 http fargo nserl purdue edu rusle2 dataweb. 5 Refer to the appropriate Isoerodent Map Figures 2 through Your local USDA Service Center may be able to provide. 5 Interpolate the annual isoerodent value for your area assistance with calculating R factors and other. This is the annual R factor for your site conservation related issues To find the office nearest. 6 Multiply the percent value obtained in Step 4 by the annual you go to. isoerodent value obtained in Step 5 This is the R factor for http www nrcs usda gov wps portal nrcs main national. your scheduled project contact local,Can I Use a Personal Computer to Calculate the. R factor For Additional Information, T he computer program used by USDA to evaluate erosion. potential is called the Revised Universal Soil Loss Equation. or RUSLE The current version of RUSLE RUSLE2 is a,Reference Documents. Stormwater Phase II Final Rule Fact Sheet Series, Windows based model that uses extensive databases that are Internet cfpub epa gov npdes stormwater swfinal cfm.
geographically linked RUSLE2 can be used to calculate the R. factor for a proposed construction site however RUSLE2 can Stormwater Phase II Final Rule 64 FR 68722. require a large investment of time to set up RUSLE2 can be Internet www epa gov npdes regulations phase2 pdf. downloaded free of charge from the Internet at Contact the U S EPA Water Resource Center Phone. http fargo nserl purdue edu rusle2 dataweb RUSLE2 Index htm 202 564 9545. Note that RUSLE2 is an upgrade of RUSLE and contains more. detailed data Therefore your calculated R factor may differ Agricultural Handbook Number 703 Predicting Soil Erosion. based on whether you calculate your R factor using the methods by Water A Guide to Conservation Planning With the Revised. specified above which utilizes data from USDA Handbook 703 Universal Soil Loss Equation RUSLE Chapter 2 pp 21 64. Predicting Soil Erosion by Water A Guide to Conservation January 1997. Planning With the Revised Universal Soil Loss Equation RUSLE Internet www epa gov npdes pubs ruslech2 pdf. January 1997 or whether you calculate your R factor using the. more updated RUSLE2 EPA notes that either method of. calculation is acceptable for determining eligibility for the. construction rainfall erosivity waiver, Fact Sheet 3 1 Construction Rainfall Erosivity Waiver Page 4. Figure 1 Erosivity Index Zone Map, Fact Sheet 3 1 Construction Rainfall Erosivity Waiver Page 5. Figure 2 Isoerodent Map of the Eastern U S, Note Units for all maps on this page are hundreds ft tonf in ac h yr 1. Fact Sheet 3 1 Construction Rainfall Erosivity Waiver Page 6. Figure 3 Isoerodent Map of the Western U S, Note Units for all maps on this page are hundreds ft tonf in ac h yr 1. Fact Sheet 3 1 Construction Rainfall Erosivity Waiver Page 7. Figure 4 Isoerodent Map of California, Note Units for all maps on this page are hundreds ft tonf in ac h yr 1.
Fact Sheet 3 1 Construction Rainfall Erosivity Waiver Page 8. Figure 5 Isoerodent Map of Oregon and Washington, Note Units for all maps on this page are hundreds ft tonf in ac h yr 1. Fact Sheet 3 1 Construction Rainfall Erosivity Waiver. Table 1 Erosivity Index EI Values extracted from USDA Manual 703. All values are at the end of the day listed below Linear interpolation between dates is acceptable. EI as a percentage of Average Annual R Value Computed for Geographic Areas Shown in Figure 1. Month Jan Jan Jan Feb Mar Mar Mar Apr Apr May May Jun Jun Jul Jul Aug Aug Sept Sept Oct Oct Nov Nov Dec Dec. Day 1 16 31 15 1 16 31 15 30 15 30 14 29 14 29 13 28 12 27 12 27 11 26 11 31. 1 0 4 3 8 3 12 8 17 3 21 6 25 1 28 30 9 34 9 39 1 42 6 45 4 48 2 50 8 53 56 60 8 66 8 71 75 7 82 89 1 95 2 100. 2 0 4 3 8 3 12 8 17 3 21 6 25 1 28 0 30 9 34 9 39 1 42 6 45 4 48 2 50 8 53 0 56 0 60 8 66 8 71 0 75 7 82 0 89 1 95 2 100. 3 0 7 4 13 8 20 9 26 5 31 8 35 3 38 5 40 2 41 6 42 5 43 6 44 5 45 1 45 7 46 4 47 7 49 4 52 8 57 0 64 5 73 1 83 3 92 3 100. 4 0 3 9 7 9 12 6 17 4 21 6 25 2 28 7 31 9 35 1 38 2 42 0 44 9 46 7 48 2 50 1 53 1 56 6 62 2 67 9 75 2 83 5 90 5 96 0 100. 5 0 2 3 3 6 4 7 6 0 7 7 10 7 13 9 17 8 21 2 24 5 28 1 31 1 33 1 35 3 38 2 43 2 48 7 57 3 67 8 77 9 86 0 91 3 96 9 100. 6 0 0 0 0 0 0 5 2 0 4 1 8 1 12 6 17 6 21 6 25 5 29 6 34 5 40 0 45 7 50 7 55 6 60 2 66 5 75 5 85 6 95 9 99 5 99 9 100. 7 0 0 0 0 0 0 0 0 0 1 2 4 9 8 5 13 9 19 0 26 0 35 4 43 9 48 8 53 9 64 5 73 4 77 5 80 4 84 8 89 9 96 6 99 2 99 7 100. 8 0 0 0 0 0 0 0 0 0 0 9 3 6 7 8 15 0 20 2 27 4 38 1 49 8 57 9 65 0 75 6 82 7 86 8 89 4 93 4 96 3 99 1 100 0 100 0 100. 9 0 0 8 3 1 4 7 7 4 11 7 17 8 22 5 27 0 31 4 36 0 41 6 46 4 50 1 53 4 57 4 61 7 64 9 69 7 79 0 89 6 97 4 100 0 100 0 100. 10 0 0 3 0 5 0 9 2 0 4 3 9 2 13 1 18 0 22 7 29 2 39 5 46 3 48 8 51 1 57 2 64 4 67 7 71 1 77 2 85 1 92 5 96 5 99 0 100. 11 0 5 4 11 3 18 8 26 3 33 2 37 4 40 7 42 5 44 3 45 4 46 5 47 1 47 4 47 8 48 3 49 4 50 7 53 6 57 5 65 5 76 2 87 4 94 8 100. 12 0 3 5 7 8 14 0 21 1 27 4 31 5 35 0 37 3 39 8 41 9 44 3 45 6 46 3 46 8 47 9 50 0 52 9 57 9 62 3 69 3 81 3 91 5 96 7 100. 13 0 0 0 0 0 1 8 7 2 11 9 16 7 19 7 24 0 31 2 42 4 55 0 60 0 60 8 61 2 62 6 65 3 67 6 71 6 76 1 83 1 93 3 98 2 99 6 100. 14 0 0 7 1 8 3 3 6 9 16 5 26 6 29 9 32 0 35 4 40 2 45 1 51 9 61 1 67 5 70 7 72 8 75 4 78 6 81 9 86 4 93 6 97 7 99 3 100. 15 0 0 0 0 0 0 5 2 0 4 4 8 7 12 0 16 6 21 4 29 7 44 5 56 0 60 8 63 9 69 1 74 5 79 1 83 1 87 0 90 9 96 6 99 1 99 8 100. 16 0 0 0 0 0 0 5 2 0 5 5 12 3 16 2 20 9 26 4 35 2 48 1 58 1 63 1 66 5 71 9 77 0 81 6 85 1 88 4 91 5 96 3 98 7 99 6 100. 17 0 0 0 0 0 0 7 2 8 6 1 10 7 12 9 16 1 21 9 32 8 45 9 55 5 60 3 64 0 71 2 77 2 80 3 83 1 87 7 92 6 97 2 99 1 99 8 100. 18 0 0 0 0 0 0 6 2 5 6 2 12 4 16 4 20 2 23 9 29 3 37 7 45 6 49 8 53 3 58 4 64 3 69 0 75 0 86 6 93 9 96 6 98 0 100 0 100. 19 0 1 0 2 6 7 4 16 4 23 5 28 0 31 0 33 5 37 0 41 7 48 1 51 1 52 0 52 5 53 6 55 7 57 6 61 1 65 8 74 7 88 0 95 8 98 7 100. 20 0 9 8 18 5 25 4 30 2 35 6 38 9 41 5 42 9 44 0 45 2 48 2 50 8 51 7 52 5 54 6 57 4 58 5 60 1 63 2 69 6 76 7 85 4 92 4 100. 21 0 7 5 13 6 18 1 21 1 24 4 27 0 29 4 31 7 34 6 37 3 39 6 41 6 43 4 45 4 48 1 51 3 53 3 56 6 62 4 72 4 81 3 88 9 94 7 100. 22 0 1 2 1 6 1 6 1 6 1 6 1 6 2 2 3 9 4 6 6 4 14 2 32 8 47 2 58 8 69 1 76 0 82 0 87 1 96 7 99 9 99 9 99 9 99 9 100. 23 0 7 9 15 0 20 9 25 7 31 1 35 7 40 2 43 2 46 2 47 7 48 8 49 4 49 9 50 7 51 8 54 1 57 7 62 8 65 9 70 1 77 3 86 8 93 5 100. 24 0 12 2 23 6 33 0 39 7 47 1 51 7 55 9 57 7 58 6 58 9 59 1 59 1 59 2 59 2 59 3 59 5 60 0 61 4 63 0 66 5 71 8 81 3 89 6 100. 25 0 9 8 20 8 30 2 37 6 45 8 50 6 54 4 56 0 56 8 57 1 57 1 57 2 57 6 58 5 59 8 62 2 65 3 67 5 68 2 69 4 74 8 86 6 93 0 100. 26 0 2 0 5 4 9 8 15 6 21 5 24 7 26 6 27 4 28 0 28 7 29 8 32 5 36 6 44 9 55 4 65 7 72 6 77 8 84 4 89 5 93 9 96 5 98 4 100. 27 0 0 0 0 0 1 0 4 0 5 9 8 0 11 1 13 0 14 0 14 6 15 3 17 0 23 2 39 1 60 0 76 3 86 1 89 7 90 4 90 9 93 1 96 6 99 1 100. 28 0 0 0 0 0 0 0 0 2 0 5 1 5 3 3 7 2 11 9 17 7 21 4 27 0 37 1 51 4 62 3 70 6 78 8 84 6 90 6 94 4 97 9 99 3 100 0 100. 29 0 0 6 0 7 0 7 0 7 1 5 3 9 6 0 10 5 17 9 28 8 36 6 43 8 51 5 59 3 68 0 74 8 80 3 84 3 88 8 92 7 98 0 99 8 99 9 100. 30 0 0 0 0 0 0 0 0 0 0 2 0 8 2 8 7 9 14 2 24 7 35 6 45 4 52 2 58 7 68 5 77 6 84 5 88 9 93 7 96 2 97 6 98 3 99 6 100. 31 0 0 0 0 0 0 0 0 0 0 2 1 0 3 5 9 9 15 7 26 4 47 2 61 4 65 9 69 0 77 2 86 0 91 6 94 8 98 7 100 0 100 0 100 0 100 0 100. 32 0 0 1 0 1 0 1 0 1 0 6 2 2 4 3 9 0 14 2 23 3 34 6 46 3 54 2 61 7 72 9 82 5 89 6 93 7 98 2 99 7 99 9 99 9 99 9 100. 33 0 0 0 0 0 0 0 0 0 0 6 2 3 4 2 8 8 16 1 30 0 46 9 57 9 62 8 66 2 72 1 79 1 85 9 91 1 97 0 98 9 98 9 98 9 98 9 100. 34 0 0 0 0 0 0 0 0 0 1 8 7 3 10 7 15 5 22 0 29 9 35 9 42 0 48 5 56 9 67 0 76 9 85 8 91 2 95 7 97 8 99 6 100 0 100 0 100. 35 0 0 0 0 0 0 0 0 0 2 5 10 2 15 9 22 2 27 9 34 7 43 9 51 9 56 9 61 3 67 3 73 9 80 1 85 1 89 6 93 2 98 2 99 8 99 8 100. Fact Sheet 3 1 Construction Rainfall Erosivity Waiver. Month Jan Jan Jan Feb Mar Mar Mar Apr Apr May May Jun Jun Jul Jul Aug Aug Sept Sept Oct Oct Nov Nov Dec Dec. Day 1 16 31 15 1 16 31 15 30 15 30 14 29 14 29 13 28 12 27 12 27 11 26 11 31. 36 0 0 0 0 0 0 0 0 0 0 9 3 4 6 7 12 7 18 5 26 6 36 3 46 0 53 5 60 2 68 3 75 8 82 6 88 3 96 3 99 3 99 9 100 0 100 0 100. 37 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 3 9 9 1 19 1 26 7 36 3 47 9 61 4 75 1 84 5 92 3 96 0 99 1 100 0 100 0 100 0 100 0 100. 38 0 0 0 0 0 1 1 4 3 7 2 11 0 13 9 17 9 22 3 30 3 43 1 55 1 61 3 65 7 72 1 77 9 82 6 86 3 90 3 93 8 98 4 100 0 100 0 100. 39 0 0 0 0 0 0 0 0 0 1 6 6 5 11 0 17 8 24 7 33 1 42 8 50 3 54 9 59 7 68 9 78 1 83 6 87 5 93 0 96 5 99 2 100 0 100 0 100. 40 0 0 0 0 0 0 0 0 0 1 5 6 2 10 1 16 3 23 3 32 5 42 2 50 1 55 6 60 5 67 5 74 3 79 4 84 1 91 1 95 8 99 1 100 0 100 0 100. 41 0 0 1 0 2 0 2 0 2 0 2 0 2 0 4 1 1 6 8 22 9 40 1 54 9 63 8 70 7 81 5 89 8 96 3 98 7 99 2 99 3 99 4 99 4 99 7 100. 42 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 9 5 2 17 3 33 8 53 2 66 5 75 9 87 6 93 7 97 5 99 0 99 7 100 0 100 0 100 0 100 0 100. 43 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 4 2 7 9 5 21 9 42 7 58 6 71 1 84 6 91 9 97 1 99 0 99 8 100 0 100 0 100 0 100 0 100. 44 0 1 7 2 3 2 4 2 4 2 4 2 4 2 7 3 5 7 6 18 5 34 3 52 5 64 0 72 3 83 3 90 0 95 1 97 3 98 5 98 9 98 9 98 9 99 2 100. 45 0 0 2 0 2 0 3 0 3 0 4 0 6 0 8 1 4 3 7 10 2 22 6 41 8 54 0 64 5 78 7 88 4 96 0 98 7 99 4 99 7 99 7 99 8 99 9 100. 46 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 2 6 7 5 19 6 32 9 48 9 63 0 73 5 83 3 89 5 95 6 98 3 99 6 100 0 100 0 100 0 100 0 100. 47 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 1 6 5 8 17 0 33 0 52 5 66 4 75 7 85 5 91 3 96 5 98 8 100 0 100 0 100 0 100 0 100 0 100. 48 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 8 1 15 4 27 8 40 7 52 6 61 1 69 3 82 6 92 0 98 0 100 0 100 0 100 0 100 0 100. 49 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 2 7 8 3 20 0 27 5 35 6 44 6 46 0 70 2 81 3 89 2 93 6 98 5 100 0 100 0 100 0 100 0 100. 50 0 0 0 0 0 0 0 0 0 0 1 0 4 2 4 8 2 13 7 23 8 38 8 55 1 66 1 73 6 81 8 87 7 93 8 97 0 99 4 100 0 100 0 100 0 100 0 100. 51 0 0 0 0 0 0 0 0 0 0 3 1 0 3 1 8 7 18 8 35 8 49 6 60 4 70 2 77 0 84 0 88 8 93 8 96 6 99 1 100 0 100 0 100 0 100 0 100. 52 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 2 5 6 8 17 5 29 8 46 1 60 5 72 7 86 0 92 8 96 8 98 4 99 7 100 0 100 0 100 0 100 0 100. 53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 3 0 9 5 24 2 35 3 48 0 63 1 76 1 87 7 93 5 97 2 98 6 99 5 99 8 99 9 100 0 100 0 100. 54 0 0 0 0 0 0 0 0 0 0 2 0 7 2 4 7 2 14 7 27 2 37 2 47 3 58 8 67 6 74 0 79 2 86 7 92 6 97 9 99 8 99 9 100 0 100 0 100. 55 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 5 4 13 3 25 5 31 6 38 8 52 5 66 8 75 5 81 2 87 9 92 8 98 3 100 0 100 0 100 0 100 0 100. 56 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 5 1 11 4 22 3 29 5 38 5 51 1 65 2 77 8 85 6 91 7 95 0 98 7 100 0 100 0 100 0 100 0 100. 57 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 3 5 9 2 21 5 31 0 43 5 60 4 75 1 86 1 91 6 96 2 98 1 99 4 99 9 99 9 100 0 100 0 100. 58 0 0 0 0 0 0 0 0 0 0 2 0 9 2 9 8 0 13 2 21 0 29 1 38 0 45 9 54 5 65 4 74 8 82 1 87 5 95 4 98 8 99 7 100 0 100 0 100. 59 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 8 9 15 6 24 2 31 1 38 3 46 0 54 9 64 2 73 2 81 9 88 5 95 7 98 6 99 4 99 7 99 7 100. 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 1 5 4 0 9 5 13 3 20 5 33 6 52 8 66 5 76 7 88 1 94 2 98 6 100 0 100 0 100 0 100 0 100. 61 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 5 0 8 5 15 5 29 8 41 8 46 0 49 2 56 0 65 1 71 6 78 6 91 1 97 3 99 3 100 0 100 0 100. 62 0 0 0 0 0 0 1 0 3 0 8 2 1 3 6 6 5 9 7 13 7 16 5 20 8 27 3 40 1 56 9 72 6 83 4 89 4 95 5 98 1 99 6 100 0 100 0 100. 63 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 3 7 7 8 13 3 15 8 19 9 29 0 46 8 64 7 78 3 88 8 93 9 98 5 100 0 100 0 100 0 100 0 100. 64 0 0 0 0 0 0 7 2 8 7 4 12 4 14 4 15 6 17 3 19 4 21 0 24 4 32 3 48 0 61 4 72 1 81 9 87 0 90 1 92 4 98 1 100 0 100 0 100. 65 0 3 6 7 0 9 6 11 4 13 0 14 4 16 3 17 7 18 4 19 3 20 5 23 6 32 0 50 0 66 2 77 2 85 4 88 8 90 4 91 3 92 7 94 8 97 0 100. 66 0 0 0 0 0 0 0 0 0 0 1 0 5 1 1 2 2 3 6 6 0 7 6 11 1 19 8 38 9 59 7 74 4 83 2 88 1 94 6 97 7 99 4 100 0 100 0 100. 67 0 0 0 0 0 0 0 0 0 0 1 0 4 0 9 1 6 1 9 2 4 5 0 12 1 24 8 48 3 73 6 86 5 92 0 94 3 96 6 97 9 99 5 100 0 100 0 100. 68 0 2 3 4 5 7 8 10 4 12 0 13 3 16 3 17 7 18 1 18 2 18 3 18 4 19 9 24 5 35 0 54 4 69 4 78 6 85 7 89 2 91 9 93 9 97 0 100. 69 0 2 0 3 7 5 7 7 8 10 5 12 4 13 7 14 3 14 7 15 1 15 7 17 1 22 7 36 7 50 4 63 6 75 0 81 8 87 8 90 8 93 2 94 9 97 5 100. 70 0 0 5 0 7 1 0 1 3 1 7 2 2 2 8 3 4 3 9 4 7 5 4 7 4 15 7 36 5 55 8 70 3 80 9 86 4 90 9 93 4 96 4 98 1 99 4 100. 71 0 0 7 1 2 1 6 2 1 2 8 3 3 3 6 4 0 4 5 5 6 6 5 9 1 18 5 40 6 59 7 74 0 86 3 91 7 94 7 96 0 96 7 97 3 98 8 100. 72 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 7 0 8 1 3 3 5 9 9 24 7 51 4 71 5 83 6 93 8 97 7 99 2 99 8 99 9 99 9 100 0 100. 73 0 0 0 0 1 0 1 0 2 0 2 0 3 0 6 1 3 4 1 11 5 18 1 28 3 40 2 54 1 67 0 77 2 87 7 93 3 97 5 99 1 99 6 99 8 100 0 100. 74 0 0 0 0 0 0 0 0 0 0 1 0 2 0 5 1 2 2 7 6 4 10 2 18 4 31 0 50 7 68 7 81 2 91 6 96 1 98 4 99 2 99 8 100 0 100 0 100. 75 0 0 1 0 1 0 1 0 2 0 5 1 3 1 9 3 0 4 1 6 6 10 0 17 6 28 3 44 7 59 4 71 6 83 9 90 3 94 7 96 7 98 8 99 6 99 9 100. Fact Sheet 3 1 Construction Rainfall Erosivity Waiver. Month Jan Jan Jan Feb Mar Mar Mar Apr Apr May May Jun Jun Jul Jul Aug Aug Sept Sept Oct Oct Nov Nov Dec Dec. Day 1 16 31 15 1 16 31 15 30 15 30 14 29 14 29 13 28 12 27 12 27 11 26 11 31. 76 0 0 0 0 0 0 0 0 0 0 1 0 2 0 6 1 3 2 0 3 5 4 9 8 4 17 4 37 3 57 5 72 9 83 7 89 5 95 8 98 4 99 6 100 0 100 0 100. 77 0 0 2 0 3 0 3 0 4 0 8 1 5 2 0 2 8 3 9 5 9 7 2 10 3 21 5 46 5 66 3 78 3 86 5 90 8 96 0 98 2 99 1 99 5 99 8 100. 78 0 0 0 0 0 0 0 0 0 0 0 0 2 0 5 1 6 3 8 8 9 13 2 21 8 35 8 56 6 75 4 86 0 92 9 95 9 98 2 99 2 99 8 100 0 100 0 100. 79 0 0 0 0 0 0 0 0 0 0 2 0 7 1 3 2 7 5 8 12 7 18 8 28 8 41 6 58 4 75 7 86 5 94 2 97 3 98 9 99 5 99 9 100 0 100 0 100. 80 0 0 6 1 2 1 6 2 1 2 5 3 3 4 5 6 9 10 1 15 5 19 7 26 6 36 4 51 7 67 5 79 4 88 8 93 2 96 1 97 3 98 2 98 7 99 3 100. 81 0 0 1 0 1 0 2 0 4 0 5 0 8 0 9 1 5 3 9 9 9 12 8 18 2 30 7 54 1 77 1 89 0 94 9 97 2 98 7 99 3 99 6 99 7 99 9 100. 82 0 0 0 0 1 0 1 0 2 0 2 0 5 1 2 3 1 6 7 14 4 20 1 29 8 44 5 64 2 83 1 92 2 96 4 98 1 99 3 99 7 99 8 99 8 99 9 100. 83 0 0 0 0 1 0 1 0 1 0 3 0 9 1 6 3 5 8 3 19 4 30 0 44 0 59 2 72 4 84 6 91 2 96 5 98 6 99 5 99 8 99 9 100 0 100 0 100. 84 0 0 0 0 1 0 1 0 2 0 3 0 6 1 7 4 9 9 9 19 5 27 2 38 3 52 8 68 8 83 9 91 6 96 4 98 2 99 2 99 6 99 8 99 8 99 9 100. 85 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 3 0 6 0 11 0 23 0 36 0 49 0 63 0 77 0 90 0 95 0 98 0 99 0 100 0 100 0 100 0 100 0 100. 86 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 3 0 6 0 11 0 23 0 36 0 49 0 63 0 77 0 90 0 95 0 98 0 99 0 100 0 100 0 100 0 100 0 100. 87 0 0 0 0 0 0 0 1 0 1 0 2 0 3 0 6 0 10 0 17 0 29 0 43 0 55 0 67 0 77 0 85 0 91 0 96 0 98 0 99 0 100 0 100 0 100 0 100. 88 0 0 0 0 0 0 0 1 0 1 0 2 0 3 0 6 0 13 0 23 0 37 0 51 0 61 0 69 0 78 0 85 0 91 0 94 0 96 0 98 0 99 0 99 0 100 0 100. 89 0 1 0 1 0 2 0 3 0 4 0 7 0 12 0 18 0 27 0 38 0 48 0 55 0 62 0 69 0 76 0 83 0 90 0 94 0 97 0 98 0 99 0 100 0 100 0 100. 90 0 1 0 2 0 3 0 4 0 6 0 8 0 13 0 21 0 29 0 37 0 46 0 54 0 60 0 65 0 69 0 74 0 81 0 87 0 92 0 95 0 97 0 98 0 99 0 100. 91 0 0 0 0 0 0 0 1 0 1 0 1 0 2 0 6 0 16 0 29 0 39 0 46 0 53 0 60 0 67 0 74 0 81 0 88 0 95 0 99 0 99 0 100 0 100 0 100. 92 0 0 0 0 0 0 0 1 0 1 0 1 0 2 0 6 0 16 0 29 0 39 0 46 0 53 0 60 0 67 0 74 0 81 0 88 0 95 0 99 0 99 0 100 0 100 0 100. 93 0 1 0 1 0 2 0 3 0 4 0 6 0 8 0 13 0 25 0 40 0 49 0 56 0 62 0 67 0 72 0 76 0 80 0 85 0 91 0 97 0 98 0 99 0 99 0 100. 94 0 1 0 2 0 4 0 6 0 8 0 10 0 15 0 21 0 29 0 38 0 47 0 53 0 57 0 61 0 65 0 70 0 76 0 83 0 88 0 91 0 94 0 96 0 98 0 100. 95 0 1 0 3 0 5 0 7 0 9 0 11 0 14 0 18 0 27 0 35 0 41 0 46 0 51 0 57 0 62 0 68 0 73 0 79 0 84 0 89 0 93 0 96 0 98 0 100. 96 0 2 0 4 0 6 0 9 0 12 0 17 0 23 0 30 0 37 0 43 0 49 0 54 0 58 0 62 0 66 0 70 0 74 0 78 0 82 0 86 0 90 0 94 0 97 0 100. 97 0 1 0 3 0 5 0 7 0 10 0 14 0 20 0 28 0 37 0 48 0 56 0 61 0 64 0 68 0 72 0 77 0 81 0 86 0 89 0 92 0 95 0 98 0 99 0 100. 98 0 1 0 2 0 4 0 6 0 8 0 10 0 13 0 19 0 26 0 34 0 42 0 50 0 58 0 63 0 68 0 74 0 79 0 84 0 89 0 93 0 95 0 97 0 99 0 100. 99 0 0 0 0 0 1 0 1 0 2 0 3 0 5 0 7 0 12 0 19 0 33 0 48 0 57 0 65 0 72 0 82 0 88 0 93 0 96 0 98 0 99 0 100 0 100 0 100. 100 0 0 0 0 0 0 0 1 0 1 0 2 0 3 0 5 0 9 0 15 0 27 0 38 0 50 0 62 0 74 0 84 0 91 0 95 0 97 0 98 0 99 0 99 0 100 0 100. 101 0 0 0 0 0 1 0 2 0 3 0 4 0 6 0 9 0 14 0 20 0 28 0 39 0 52 0 63 0 72 0 80 0 87 0 91 0 94 0 97 0 98 0 99 0 100 0 100. 102 0 0 0 1 0 2 0 3 0 4 0 6 0 8 0 11 0 15 0 22 0 31 0 40 0 49 0 59 0 69 0 78 0 85 0 91 0 94 0 96 0 98 0 99 0 100 0 100. 103 0 1 0 2 0 3 0 4 0 6 0 8 0 10 0 14 0 18 0 25 0 34 0 45 0 56 0 64 0 72 0 79 0 84 0 89 0 92 0 95 0 97 0 98 0 99 0 100. 104 0 2 0 3 0 5 0 7 0 10 0 13 0 16 0 19 0 23 0 27 0 34 0 44 0 54 0 63 0 72 0 80 0 85 0 89 0 91 0 93 0 95 0 96 0 98 0 100. 105 0 1 0 3 0 6 0 9 0 12 0 16 0 21 0 26 0 31 0 37 0 43 0 50 0 57 0 64 0 71 0 77 0 81 0 85 0 88 0 91 0 93 0 95 0 97 0 100. 106 0 3 0 6 0 9 0 13 0 17 0 21 0 27 0 33 0 38 0 44 0 49 0 55 0 61 0 67 0 71 0 75 0 78 0 81 0 84 0 86 0 90 0 94 0 97 0 100. 107 0 3 0 5 0 7 0 10 0 14 0 18 0 23 0 27 0 31 0 35 0 39 0 45 0 53 0 60 0 67 0 74 0 80 0 84 0 86 0 88 0 90 0 93 0 95 0 100. 108 0 3 0 6 0 9 0 12 0 16 0 20 0 24 0 28 0 33 0 38 0 43 0 50 0 59 0 69 0 75 0 80 0 84 0 87 0 90 0 92 0 94 0 96 0 98 0 100. 109 0 3 0 6 0 10 0 13 0 16 0 19 0 23 0 26 0 29 0 33 0 39 0 47 0 58 0 68 0 75 0 80 0 83 0 86 0 88 0 90 0 92 0 95 0 97 0 100. 110 0 1 0 3 0 5 0 7 0 9 0 12 0 15 0 18 0 21 0 25 0 29 0 36 0 45 0 56 0 68 0 77 0 83 0 88 0 91 0 93 0 95 0 97 0 99 0 100. 111 0 1 0 2 0 3 0 4 0 5 0 6 0 8 0 11 0 15 0 20 0 28 0 41 0 54 0 65 0 74 0 82 0 87 0 92 0 94 0 96 0 97 0 98 0 99 0 100. 112 0 0 0 0 0 1 0 2 0 3 0 4 0 5 0 7 0 12 0 17 0 24 0 33 0 42 0 55 0 67 0 76 0 83 0 89 0 92 0 94 0 96 0 98 0 99 0 100. 113 0 1 0 2 0 3 0 4 0 5 0 6 0 8 0 10 0 13 0 17 0 22 0 31 0 42 0 52 0 60 0 68 0 75 0 80 0 85 0 89 0 92 0 96 0 98 0 100. 114 0 1 0 2 0 4 0 6 0 8 0 11 0 13 0 15 0 18 0 21 0 26 0 32 0 38 0 46 0 55 0 64 0 71 0 77 0 81 0 85 0 89 0 93 0 97 0 100. 115 0 1 0 2 0 3 0 4 0 5 0 6 0 8 0 10 0 14 0 19 0 26 0 34 0 45 0 56 0 66 0 76 0 82 0 86 0 90 0 93 0 95 0 97 0 99 0 100. Fact Sheet 3 1 Construction Rainfall Erosivity Waiver. Month Jan Jan Jan Feb Mar Mar Mar Apr Apr May May Jun Jun Jul Jul Aug Aug Sept Sept Oct Oct Nov Nov Dec Dec. Day 1 16 31 15 1 16 31 15 30 15 30 14 29 14 29 13 28 12 27 12 27 11 26 11 31. 116 0 1 0 3 0 5 0 7 0 9 0 12 0 15 0 18 0 21 0 25 0 29 0 36 0 45 0 56 0 68 0 77 0 83 0 88 0 91 0 93 0 95 0 97 0 99 0 100. 117 0 1 0 2 0 3 0 4 0 5 0 7 0 9 0 11 0 14 0 17 0 22 0 31 0 42 0 54 0 65 0 74 0 83 0 89 0 92 0 95 0 97 0 98 0 99 0 100. 118 0 1 0 2 0 3 0 5 0 7 0 10 0 14 0 18 0 22 0 27 0 32 0 37 0 46 0 58 0 69 0 80 0 89 0 93 0 94 0 95 0 96 0 97 0 97 0 100. 119 0 2 0 4 0 6 0 8 0 12 0 16 0 20 0 25 0 30 0 35 0 41 0 47 0 56 0 67 0 75 0 81 0 85 0 87 0 89 0 91 0 93 0 95 0 97 0 100. 120 0 1 0 2 0 4 0 6 0 7 0 9 0 12 0 15 0 18 0 23 0 31 0 40 0 48 0 57 0 63 0 72 0 78 0 88 0 92 0 96 0 97 0 98 0 99 0 100. 121 0 8 0 16 0 25 0 33 0 41 0 46 0 50 0 53 0 54 0 55 0 56 0 56 5 57 0 57 8 58 0 58 8 60 0 61 0 63 0 66 5 72 0 80 0 90 0 100. 122 0 7 0 14 0 20 0 25 5 33 5 38 0 43 0 46 0 50 0 52 5 54 5 56 0 58 0 59 0 60 0 61 5 63 0 65 0 68 0 72 0 79 0 86 0 93 0 100. 123 0 4 0 8 0 12 0 17 0 23 0 29 0 34 0 38 0 44 0 49 0 53 0 56 0 59 0 62 0 65 0 69 0 72 0 75 0 79 0 83 0 88 0 93 0 96 0 100. 124 0 4 0 9 0 15 0 23 0 29 0 34 0 40 0 44 0 48 0 50 0 51 0 52 0 53 0 55 0 57 0 60 0 62 0 64 0 67 0 72 0 80 0 88 0 95 0 100. 125 0 7 0 12 0 17 0 24 0 30 0 39 0 45 0 50 0 53 0 55 0 56 0 57 0 58 0 59 0 61 0 62 0 63 0 64 0 66 0 70 0 77 0 84 0 92 0 100. 126 0 9 0 16 0 23 0 30 0 37 0 43 0 47 0 50 0 52 0 54 0 55 0 56 0 57 0 58 0 59 0 60 0 62 0 64 0 67 0 71 0 77 0 86 0 93 0 100. 127 0 8 0 15 0 22 0 28 0 33 0 38 0 42 0 46 0 50 0 52 0 53 0 53 0 53 0 53 0 54 0 55 0 57 0 59 0 63 0 68 0 75 0 83 0 92 0 100. 128 0 8 0 15 0 22 0 29 0 34 0 40 0 45 0 48 0 51 0 54 0 57 0 59 0 62 0 63 0 64 0 65 0 66 0 67 0 69 0 72 0 76 0 83 0 91 0 100. 129 0 9 0 16 0 22 0 27 0 32 0 37 0 41 0 45 0 48 0 51 0 53 0 55 0 56 0 57 0 57 0 58 0 59 0 61 0 64 0 68 0 73 0 79 0 89 0 100. 130 0 10 0 20 0 28 0 35 0 41 0 46 0 49 0 51 0 53 0 55 0 56 0 56 0 57 0 58 0 59 0 60 0 61 0 62 0 65 0 69 0 74 0 81 0 90 0 100. 131 0 8 0 15 0 22 0 28 0 33 0 38 0 41 0 44 0 47 0 49 0 51 0 53 0 55 0 56 0 58 0 59 0 60 0 63 0 65 0 69 0 75 0 84 0 92 0 100. 132 0 10 0 18 0 25 0 29 0 33 0 36 0 39 0 41 0 42 0 44 0 45 0 46 0 47 0 48 0 49 0 51 0 53 0 56 0 59 0 64 0 70 0 80 0 90 0 100. 133 0 8 0 16 0 24 0 32 0 40 0 46 0 51 0 54 0 56 0 57 0 58 0 58 0 59 0 59 0 60 0 60 0 61 0 62 0 64 0 68 0 74 0 83 0 91 0 100. 134 0 12 0 22 0 31 0 39 0 45 0 49 0 52 0 54 0 55 0 56 0 56 0 56 0 56 0 57 0 57 0 57 0 57 0 58 0 59 0 62 0 68 0 77 0 88 0 100. 135 0 7 0 15 0 22 0 30 0 37 0 43 0 49 0 53 0 55 0 57 0 58 0 59 0 60 0 61 0 62 0 63 0 65 0 67 0 70 0 74 0 79 0 85 0 92 0 100. 136 0 11 0 21 0 29 0 37 0 44 0 50 0 55 0 57 0 59 0 60 0 60 0 60 0 60 0 61 0 61 0 61 0 62 0 63 0 64 0 67 0 71 0 78 0 89 0 100. 137 0 10 0 18 0 25 0 30 0 39 0 46 0 51 0 54 0 57 0 58 0 59 0 59 0 60 0 60 0 60 0 61 0 62 0 63 0 64 0 67 0 72 0 80 0 90 0 100. 138 0 11 0 22 0 31 0 39 0 46 0 52 0 56 0 58 0 59 0 60 0 61 0 61 0 61 0 61 0 62 0 62 0 62 0 63 0 64 0 66 0 71 0 78 0 89 0 100. 139 0 8 0 14 0 20 0 25 0 32 0 37 0 42 0 47 0 50 0 53 0 55 0 56 0 58 0 59 0 61 0 63 0 64 0 66 0 68 0 71 0 76 0 85 0 93 0 100. 140 0 13 0 18 0 43 0 56 0 65 0 69 0 69 4 69 7 70 1 70 4 70 8 71 1 71 5 71 9 72 2 72 6 73 0 73 3 73 6 74 0 76 0 81 0 89 0 100.

Related Books