HomeMy WebLinkAboutSALUD FAMILY HEALTH CENTER LOT 4 - FDP200011 - DOCUMENT MARKUPS - ROUND 2 - EROSION CONTROL LETTER/REPORTVer 2.0 – 04/2020
Full review of the Erosion Control Plan
Erosion control plans are required on all projects that are larger than 10,000 square feet, contain steep slopes
(steeper than 3:1 or 18°), part of a larger common development, or are located near (50 ft or closer to a sensitive
area) a sensitive area.
All sections referenced are mandatory requirements from FCDCM Chapter 2 “Development Submittal Requirements”
1) Have all redlined comments on the erosion control plan been answered or
corrected from the prior submittal?
Yes No N/A
2) Is the plan set stamped by a P.E. Licensed in Colorado? Sec. 6.1.3 Yes No N/A
3) Are the erosion control plan requirements easily found within one or more of the
following locations; Title Sheet, Maps Sheets, Notes Sheet, and/or Details Sheet?
Sec. 6.1.3
Yes No N/A
4) Is the information clearly shown and legible and not cluttered? Sec. 6.1.3 Yes No N/A
5) Is there a table of calculations or calculations chart? Sec. 6.1.3.1 Yes No N/A
a. Is the total Disturbed Project Area included? Sec. 6.1.3.1 Yes No N/A
b. Is the total On-site Disturbed Area included? Sec. 6.1.3.1 Yes No N/A
c. Is the total Off-site Disturbed Area included? Sec. 6.1.3.1 Yes No N/A
d. Is the total Staging/Storage Area included? Sec. 6.1.3.1 Yes No N/A
e. Is the total area of Haul Road Area included? Sec. 6.1.3.1 Yes No N/A
f. Is the total Construction Vehicle Traffic Areas included? Sec. 6.1.3.1 Yes No N/A
g. Is the Estimated Percent of Project Exposed included? Sec. 6.1.3.1 Yes No N/A
h. Is the Estimated Percent Vegetative Cover included? Sec. 6.1.3.1 Yes No N/A
i. Is/Are the Existing Soil Type(s) Included? Sec. 6.1.3.1 Yes No N/A
j. Is the groundwater depth included? Sec. 6.1.3.1 Yes No N/A
k. Is the number of Phases shown? Sec. 6.1.3.1 Yes No N/A
l. Is the total Volume of Import/Export Materials included? Sec. 6.1.3.1 Yes No N/A
m. Is the steepest slope given? Sec. 6.1.3.1 Yes No N/A
n. Is the distance from sensitive areas included? Sec. 6.1.3.1 Yes No N/A
6) Is there a legend? Sec. 6.1.3.3 Yes No N/A
a. Is every symbol included on the map found in the legend? Sec. 6.1.3.3 Yes No N/A
b. Are all symbols not to scale labeled as such? Sec. 6.1.3.3 Yes No N/A
7) Is the plan in a 24 x 36-inch format? Yes No N/A
8) Is north shown on the map? Yes No N/A
9) Are the map units Imperial/English/Standard? Yes No N/A
10) Does the Map contain Stormwater Flow Arrows? Sec. 6.1.3.3 Yes No N/A
a. Are slopes steeper than 3:1 marked and labeled? Sec. 6.1.3.3 Yes No N/A
b. Are the arrows going the correct direction? Sec. 6.1.3.3 Yes No N/A
c. Are curb and gutter locations marked with flow arrows? Sec. 6.1.3.3 Yes No N/A
d. Are concentrated flows running onto a project? Sec. 6.1.3.3
(Includes rates for 2yr and 100yr)
Yes No N/A
11) Are the property lines and lot lines included in the erosion control sheets? Sec.
6.1.3.3
Yes No N/A
a. Are the property lines keyed in the legend? Sec. 6.1.3.3 Yes No N/A
b. Is the owner’s information marked on the sheet? Sec. 6.1.3.3 Yes No N/A
12) Are the limits of construction or limits of disturbance included? Sec. 6.1.3.3 Yes No N/A
a. Are the limits labeled? Sec. 6.1.3.3 Yes No N/A
Ver 2.0 – 04/2020
b. Boundary lines darkened, boldened, shaded or hatched to easily identify that
boundary? Sec. 6.1.3.3
Yes No N/A
13) Are water features identified? (existing drainage, wetland, natural habitat buffer
zones, streams, springs, stream corridors, creeks, lakes, or other surface water
features)
Yes No N/A
14) Are any temporary channel diversions and crossings designed? Sec. 6.1.3.3 Yes No N/A
a. Does the crossing include routes, pipe sizing and linings to be used? Sec.
6.1.3.3
Yes No N/A
15) Are Stormwater features identified? (detention basins, LID facilities, water quality
structures, inlets, pipes, culverts, storm sewers, drainage swale, concrete pans,
aprons, paved areas, retaining walls, cribbing, irrigation ditches, reservoirs and
other facilities, and other permanent features or outfalls) Sec. 6.1.3.3
Yes No N/A
16) Are permanent erosion control features shown? Sec. 6.1.3.3 Yes No N/A
17) Are permanent drainage features including a bold line at the 100-yr. storm event
water surface elevation? Sec. 6.1.3.3
Yes No N/A
18) Are contours lines included? (typically, 1’ to 2’ intervals) Yes No N/A
a. Do the contour lines extend 50-100 ft around the disturbed area? Yes No N/A
b. Are the Existing contour lines dashed or in a light grey? Yes No N/A
c. Are the Proposed contour lines solid, bolded or black? Yes No N/A
19) Are all locations shown for buildings, roads (named and labelled), paths ramps
medians and sidewalks? Sec. 6.1.3.3
Yes No N/A
20) Are all off-site materials import of export and haul roads included as part of the
plans? (Excluding landscaper’s or builder’s storage yards) Sec. 6.1.3.3
Yes No N/A
a. Are all off site stockpile storage locations labelled with the note to have a
stockpile pulled? Sec. 6.1.3.3
Yes No N/A
b. Are all locations protected from erosion using control measures? Sec. 6.1.3.3 Yes No N/A
21) Are control measures shown on the plan? Sec. 6.1.3.3 Yes No N/A
22) Are all services that will require “tie-in” from off-site marked and labeled? Yes No N/A
23) Are the standard erosion control notes included and not changed in any form in the
plan set? Sec. 6.1.3.4
Yes No N/A
24) Are all site-specific Erosion Control notes that are special to this site included in the
erosion control plan or a sheet within the Utility Plan Set? Sec. 6.1.3.4
Yes No N/A
25) Are details included for every unique type of control measure as called out on the
plan sheet? Sec. 6.1.3.5
Yes No N/A
26) Are all details shown ones accepted by the City either as a standard detail or
through the accepted proprietary control detail or accepted alternative control
method? Sec. 6.1.3.5
Yes No N/A
27) Are the details provided going to structurally work as designed in shown locations
and will it function properly as proposed based off sound engineering principals?
(think about the sediment laden flows and volumes that will be directed to these
control measures and are they sized appropriately to contain pollutants and are
they designed to prevent flooding at the same time)
Yes No N/A
Control Measure specific questions for plan evaluation
Perimeter Protection
1) Do all down gradient perimeters of the site have an adequate form of sediment
control? (i.e. Silt Fence, Straw Wattle, Compact Berm, etc.)
Yes No N/A
2) Do all perimeters have adequate site control (typically construction fence or other
diversion) to prevent contractors, subs, builders, etc. from leaving the site in non-
designated entrances and to redirect them to use the entrance protection?
Yes No N/A
Ver 2.0 – 04/2020
3) Verify that only appropriate sediment controls are used on hardscape areas? (i.e.
not calling out silt fence or wattle to be installed on asphalt or concrete as they will
not function as a control in those locations and using rock socks or other controls
that will work on hard surfaces)
Yes No N/A
4) Do wattles have some form of construction fence or physical barrier to protect the
wattles from being driven over or parked on by equipment and causing the control
measure to fail?
Yes No N/A
5) Once internal streets are installed, are there interior perimeter controls planned
for? (Either the sediment controls for lots or blocks that would run off onto the
newly installed streets or construction fences to limit access from driving off these
individual lots at any given location of the internal streets)
Yes No N/A
6) Are all the utility installations shown coming on to a site and if so, are the areas
that the utilities breech the perimeter, are there control installed down gradient?
Yes No N/A
Curb Sock (Rock Socks installed in the curb line)
7) Are the curb socks facing the correct direction of flow?
(i.e. where the flow meets the wedge portion of the control _Rocksock_/ Flow )
Yes No N/A
8) Are the curb socks roughly at the correct spacing? Yes No N/A
Inlet protection
9) Are all of the interior inlet devices showing some form of control measure? Yes No N/A
10) Are all roof drains and subdrains showing some form of control measure at any
openings?
Yes No N/A
11) Are there any existing inlets that might be affected by construction activities? (i.e.
down gradient inlets near entrances and perimeters of a project)
Yes No N/A
12) Are provided details allowing for overflows in flooding conditions? Yes No N/A
13) Are they designed in a way to make sure they are not overly restricting flows and
becoming a flooding source?
Yes No N/A
Concrete Work
14) Is there a concrete washout area called out on the erosion control plans? Yes No N/A
15) Is the location of the concrete washout area >50 ft from an inlet or drainage path? Yes No N/A
16) Is there access to the washout areas from a stabilized surface or vehicle tracking
control?
Yes No N/A
Entrances
17) Are all shown entrances protected or to be barricaded or fenced off to
limit/prevent traffic from leaving the site uncontrolled?
Yes No N/A
18) Are all entrances calling out for sweeping activities? Yes No N/A
Steep Slopes (greater than 3:1)
19) Do slopes show surface roughening as a temporary control measure at a minimum? Yes No N/A
20) Do the notes or a callout identify hydromulch or tackifier to be used if riling is
occurring?
Yes No N/A
21) Is Blanket and/or tackifier called out for the final slope stabilization? Yes No N/A
22) Are the blankets going to be installed in a snake prone area? (If so, specific blankets
need to be used to prevent entanglement or entrapment of wildlife on the netting
used on erosion control blankets)
Yes No N/A
23) Is the slope steep enough or takes run-on that additional uphill controls or
diversions to slope drains are needed as an option?
Yes No N/A
Stabilized Storage Area
24) Are all storage or laydown areas marked on the map? Yes No N/A
Concentrate flows through or directly adjacent to the site (Stream work)
Ver 2.0 – 04/2020
25) Are diversion around the project planned and shown on the plans? Yes No N/A
26) Are dewatering permits pulled for flows across the banks? Yes No N/A
27) Are the control measures adequate to handle the flow velocities on the banks? Yes No N/A
Water Quality Structures and LIDs
28) Are to control measures adequate size to handle the anticipated amount of flow to
the structure? (Rock socks and 8” wattles are not typically sufficient to protect
these type of structures)
Yes No N/A
29) Are there controls or notes addressing how to prevent rain gardens, bioswales, and
other LIDs from heavy sediment loading during construction to prevent failure
before they can be fully vegetated?
Yes No N/A
Grading Activities
30) Are controls installed prior to grading activities? (Typically all the perimeter controls
and existing inlets, entrance controls, site access controls, etc.)
Yes No N/A
31) Are controls called out for use during grading activities? (Grade differential,
compact berms, limiting disturbed areas, terracing, surface roughening, etc.)
Yes No N/A
32) Are controls called out for after grading? (temporary seeding, permanent seeding,
limiting access)
Yes No N/A
Vegetation
33) Are there areas identified to be seeded and mulched? (These are included in the
landscape plan if permanent seeding is planned, however these areas should be
identified if temporary seeding is need) (on larger project temporary seeding
should be planned for and shown in later phases of construction after site grading
is finalized)
Yes No N/A
34) Follow Flow arrows on the plan and make sure there are enough sediment controls
to reducing the migration of sediment across the site? Look for issues at low points.
Yes No N/A
35) Look at bare areas that are intending to be seeded and determine if those large
areas could use some erosion controls to prevent sediment suspension to begin
with?
Yes No N/A
Sequence Chart
For projects that are required to supply erosion control plans and are less than 3 acres sequence charts are required
to be submitted on the plans in accordance with 6.1.3.2.
All sections referenced are mandatory requirements from FCDCM Chapter 2 “Development Submittal Requirements”
1) Is there a sequence chart included in the erosion control plans? Sec 6.1.3.2 Yes No N/A
2) Are all the control measures shown on the erosion control plans included in the
sequence chart? Are there ones missing? Are there ones that are not applicable?
Sec 6.1.3.2
Yes No N/A
3) Are all the appropriate sequences selected for the designed project? Are there
ones missing? Are there ones that are not applicable? Sec 6.1.3.2
Yes No N/A
4) Are all the correct control measures to be installed, maintained, and removed
across the appropriate sequences of construction? Sec 6.1.3.2
Yes No N/A
Ver 2.0 – 04/2020
Sequence Sheets
For projects that are required to supply erosion control plans and are greater than 3 acres sequence sheets are
required to be submitted on the plans in accordance with 6.1.3.2.
All sections referenced are mandatory requirements from FCDCM Chapter 2 “Development Submittal Requirements”
1) Are there at least 3 sequence sheets for the major activities during construction?
Sec 6.1.3.2
Yes No N/A
2) Does each individual sequence sheet meet the Erosion Control Plan Check sheet
section above? Sec 6.1.3.2
Yes No N/A
3) Does the title page label each of the sequence sheets? Sec 6.1.3.2 Yes No N/A
4) Does the page label match each sequence? Sec 6.1.3.2 Yes No N/A
5) Is each control measure shown on each sequence sheet needed for those
construction activities? Sec 6.1.3.2
Yes No N/A
Ver 2.0 – 04/2020
Full Review of the Erosion Control Report
Erosion control reports are required on all projects that are larger than 43,560 square feet or are part of a larger
common development.
All sections referenced are mandatory requirements from FCDCM Chapter 2 “Development Submittal Requirements”
1) Have all redlined comments on the erosion control report been answered or
corrected from the prior submittal?
Yes No N/A
2) Is an erosion control report located in an acceptable location upon submittal?
(typically, a stand-alone document or as part of the drainage report)
Yes No N/A
3) Is the material stamped by a P.E. Licensed in Colorado? See 6.1.4 Yes No N/A
4) Is the material typed? See 6.1.4 Yes No N/A
5) Does the Erosion Control Report Contain all of the key elements? See 6.1.4 Yes No N/A
6) Is a Title Page, Cover Letter and Notification of Responsibility section included? See
6.1.4.1
Yes No N/A
a. Is the Name of the Project included? See 6.1.4.1 Yes No N/A
b. Does the name match the one on the erosion control plan? Yes No N/A
c. Is the Date Submitted included? See 6.1.4.1 Yes No N/A
d. Is the Landowner’s contact info included? See 6.1.4.1 Yes No N/A
e. Is the Developer’s contact info included? See 6.1.4.1 Yes No N/A
f. Is the Contractor’s contact info included? See 6.1.4.1 Yes No N/A
g. Is the Engineer’s contact info included? See 6.1.4.1 Yes No N/A
h. Is the Erosion Control Administrator’s contact info included? See 6.1.4.1 Yes No N/A
A fully signed and dated copy submitted before beginning construction activities and initial inspection request
7) Is the Table of Contents included? See 6.1.4.2 Yes No N/A
8) Is the Project Description and Nature of Construction Included? See 6.1.4.3 Yes No N/A
a. Does it describe the existing site condition and proposed condition? See 6.1.4.3 Yes No N/A
b. Does the description include Project Location? See 6.1.4.3 (typically including 2
of the follow methods: Written description, legal description, parcel number,
address, GPS Coordinates in decimal degrees)
Yes No N/A
c. Does the existing site condition describe physical soil properties, hydraulic soil
properties, and soil features? See 6.1.4.3
Yes No N/A
d. Does the existing site condition describe the pathway to the nearest receiving
water? See 6.1.4.3 (i.e. the drainage path from the outfall to either the Poudre
River or Fossil Creek Reservoir)
Yes No N/A
e. Does the existing site condition describe the existing vegetated areas to
impervious areas? See 6.1.4.3 (typically, a ratio)
Yes No N/A
f. Does the existing site condition describe the estimated percent vegetative
ground cover? See 6.1.4.3 (estimate of density of vegetation)
Yes No N/A
g. Does the existing site condition describe the existing groundwater depth? See
6.1.4.3
Yes No N/A
h. Does the existing site condition describe identified non-stormwater
discharges? See 6.1.4.3 (Springs, irrigation return flows, etc.)
Yes No N/A
i. Are those non-stormwater discharges included on the erosion control plans? Yes No N/A
j. Does the existing site condition describe steepness of slopes on site? See
6.1.4.3
Yes No N/A
k. Does the existing site condition describe existing structures? See 6.1.4.3 Yes No N/A
Ver 2.0 – 04/2020
l. Does the existing site condition describe distance from riparian or sensitive
areas? See 6.1.4.3
Yes No N/A
m. Does the existing site condition describe a summary of ground contamination?
See 6.1.4.3
Yes No N/A
n. Does the existing site condition describe rainfall and wind erodibility? See
6.1.4.3 (Be sure to summarize the soil erosion potential and the possible
impacts of those soils to impact water quality. Typically, the soil type is
described with no mention as to what that means for erosion and its impact as
a potential to discharge from a site)
Yes No N/A
o. Does the existing site condition contain any other relevant site data for erosion
control?
Yes No N/A
p. Does the proposed condition contain a description of the construction
activities from the beginning until the final stabilization of the project? See
6.1.4.3
Yes No N/A
q. Does the Proposed Construction Activities Section include the Total Area of the
Project? See 6.1.4.3
Yes No N/A
r. Does the Proposed Construction Activities Section include a description of
where the size was limited to reduce soil exposure? See 6.1.4.3
Yes No N/A
s. Does the Proposed Construction Activities Section include the Total Area of
Disturbance? (both on-site and off-site) See 6.1.4.3
Yes No N/A
t. Does the Proposed Construction Activities Section include the Total Areas of
Staging and Storage? See 6.1.4.3
Yes No N/A
u. Does the Proposed Construction Activities Section include the Total Areas for
Hauling? See 6.1.4.3
Yes No N/A
v. Does the Proposed Construction Activities Section include the Total Volumes of
imported and Exported Material? See 6.1.4.3
Yes No N/A
w. Does the description identify any possible environmental impacts? See 6.1.4.3
(wetlands, streams, and endangered species identified, etc.)
Yes No N/A
x. Does the description identify any State or Federal Permits that needed to be
pulled? See 6.1.4.3 (State Dewatering Permit, ACOE 404 Permit, 401 Water
Quality Cert, State Stormwater Construction Permit, etc.)
Yes No N/A
9) Is a section called Potential Pollutant Sources included? See 6.1.4.4 Yes No N/A
10) Are at a minimum all 16 commonly identified potential pollutant sources included?
See 6.1.4.4
Yes No N/A
11) Are each of 16 sources labeled with Presence on site? See 6.1.4.4 (i.e. “Yes” present
on site or a “No” not anticipated on site)
Yes No N/A
12) Have each of the 16 sources Identified and Described the pollutant source? See
6.1.4.4
Yes No N/A
13) Has each of the 16 sources Evaluated the source’s pollutant potential to contribute
to site discharge? See 6.1.4.4
Yes No N/A
14) Have each of the 16 sources Prescribed control measures to prevent pollutants
from contributing to site discharges? See 6.1.4.4
Yes No N/A
i. All disturbed and stored soils Included
ii. Vehicle tracking of sediments Included
iii. Management of contaminated soils Included
iv. Loading and unloading operations Included
v. Outdoor storage of construction materials, building materials, fertilizers,
and chemicals
Included
vi. Bulk storage of materials Included
vii. Vehicle and equipment maintenance and fueling Included
Ver 2.0 – 04/2020
viii. Significant dust or particulate generating processes Included
ix. Routine maintenance activities involving fertilizers, pesticides, detergents,
fuels, solvents, and oils
Included
x. On-site waste management practices Included
xi. Concrete truck/equipment washing, including the concrete truck chute and
associated fixtures and equipment
Included
xii. Dedicated asphalt and concrete batch plants Included
xiii. Non-industrial waste sources such as worker trash and portable toilets Included
xiv. Saw Cutting and Grinding Included
xv. Other non-stormwater discharges including construction dewatering not
covered under the Construction Dewatering Discharges general permit and
wash water that may potentially contribute pollutants to the MS4
Included
xvi. Other areas or operations where spills can occur Included
15) Is a section called Control Measures included? See 6.1.4.5 Yes No N/A
a. Are all the Prescribed Controls from the pollutant sources section included in
this section? See 6.1.4.5
Yes No N/A
b. Are all the controls measures in this section included on the erosion control
plans? See 6.1.4.5
Yes No N/A
c. Are all the controls measures in erosion control plans included in this section?
See 6.1.4.5
Yes No N/A
d. Does each control measure have a description? See 6.1.4.5 Yes No N/A
e. Does each control measure have how it is to be implemented? See 6.1.4.5 Yes No N/A
f. Does each control measure have a corresponding detail? See 6.1.4.5 Yes No N/A
16) Is a section called Installation and Removal Sequence of Control Measures included
or incorporated into the section called Control Measure? See 6.1.4.6
Yes No N/A
a. Does the section convey the estimated Installation and Removal of Control
Measures based upon the sequence of the construction activities? See 6.1.4.6
Yes No N/A
b. Is the section Installation and Removal Sequence of Control Measures simple
to follow, clear, and concise?
Yes No N/A
17) Is a section called Maintenance and Inspection Requirements? See 6.1.4.8 Yes No N/A
a. Does the section include how to maintain each control? See 6.1.4.8 (when it is
needed, how to clean it out or repair it)
Yes No N/A
b. Does the section identify the frequency of inspections? See 6.1.4.8 Yes No N/A
18) Is a section called Final Vegetation and Stabilization? See 6.1.4.9 Yes No N/A
a. Does the section Final Vegetation and Stabilization include the means to return
the exposed dirt from construction activities to a stabilized state? See 6.1.4.9
Yes No N/A
b. Areas for immediate vegetation and stabilization (i.e. traditional landscaping) See 6.1.4.9
i. Is there a discussion of soil preparation in accordance with Municipal Code
§12-132? See 6.1.4.9
Yes No N/A
ii. Is there a planting method described? See 6.1.4.9 Yes No N/A
iii. Is there an anticipated planting schedule? See 6.1.4.9 Yes No N/A
iv. Is how and when these areas are considered stabilized described? See
6.1.4.9
Yes No N/A
v. Reference to using the approved landscape plans and following City
Landscape Standards (LUC 3.2.1 (3)) See 6.1.4.9
Yes No N/A
c. Areas that will require seeding (either temporary or permanent) See 6.1.4.9
i. Is there a description of soil preparation in accordance with Municipal
Code §12-132? See 6.1.4.9
Yes No N/A
Ver 2.0 – 04/2020
ii. Is a selected seed mix used? Or states it can be found in the approved
landscape plans? See 6.1.4.9
Yes No N/A
a. Is Species Name and common name included? See 6.1.4.9 Yes No N/A
b. Is the Seed application Rate in (lbs. of PLS/acre) included? See 6.1.4.9 Yes No N/A
c. Is the Drill Depth included? See 6.1.4.9 Yes No N/A
iii. Is there an explanation of the seeding method and schedule? See 6.1.4.9 Yes No N/A
iv. Is there an explanation of the crimping and mulching method being
applied 24 hours after seeding has occurred? See 6.1.4.9
Yes No N/A
v. Is there description of how to determine and when such areas will be
considered stabilized? See 6.1.4.9
Yes No N/A
d. Is the estimated timeline for stabilization of the exposed area included?
(immediate, seasons, years, etc.) See 6.1.4.9
Yes No N/A
e. Is there a description to remove all accumulated sediment in the pipes after
the site has been stabilized and how any remaining controls should be
removed after cleaning the infrastructure? See 6.1.4.9
Yes No N/A
19) Is there a section called Appendix? See 6.1.4.10 Yes No N/A
20) Does the section called Appendix contain at a minimum all referenced material
from any previous section of the erosion control report? See 6.1.4.9
Yes No N/A
21) Does the section called Appendix contain a copy of all control measure details to be
used on the project? See 6.1.4.9
Yes No N/A
Ver 2.0 – 04/2020
Full Review of the Erosion Control Escrow Calculation
Erosion control escrow calculations are required on all non-City projects that are larger than 10,000 square feet,
contain steep slopes (steeper than 3:1 or 18°), part of a larger common development, or are located near (closer
than 50 ft from a sensitive area) a sensitive area.
All sections referenced are mandatory requirements from FCDCM Chapter 2 “Development Submittal Requirements”
1) Have all redlined comments on the erosion control report been answered or
corrected from the prior submittal? Sec. 6.1.5
Yes No N/A
2) Is an erosion control escrow calculation sheet completed and in an appropriate
location? (Stand- alone sheet or part of the erosion control or drainage report) Sec.
6.1.5
Yes No N/A
3) Is the name the same as what is shown on the Erosion Control Plan? Sec. 6.1.5 Yes No N/A
4) Are each of the control measures shown on the erosion control plan included in the
calculation sheet? Sec. 6.1.5
Yes No N/A
5) Are the quantities of each control measure shown on the plan included in the
calculation sheet? Sec. 6.1.5
Yes No N/A
6) Is the total disturbed area used for the entire site? (this area is not just the areas to
be reseeded but any of the areas that would be disturbed) Sec. 6.1.5
Yes No N/A
7) Are the prices realistic and based upon recent prior estimates? Sec. 6.1.5 Yes No N/A
8) Is the calculation based upon one and a half times the cost to install the approved
control measures as shown on the erosion control plan? Sec. 6.1.5
Yes No N/A
9) Is the calculation based upon one and a half times the cost to re-vegetate the
disturbed land with dry land seeding? Sec. 6.1.5
Yes No N/A
10) Is the calculation based upon the minimum escrow? Sec. 6.1.5 Yes No N/A
11) Is the security based upon the highest of 8, 9, and 10? (Controls, Reseeding, and
Minimum) Sec. 6.1.5
Yes No N/A
12) Are all prior redline comments corrected from prior submittal? Sec. 6.1.5 Yes No N/A
13) If quoted in the Report, does the amounts match in both places? Sec. 6.1.5 Yes No N/A
14) Would this escrow be better served by having phased escrows?
(Landscaped areas that generally are finished early vs Native seed areas which can
take several years before completion)
(Splitting these escrows up is recommended to return some escrow prior to full site
stabilization)
Yes No N/A
Ver 2.0 – 04/2020
Phased Materials
When phased materials are planned this section is to be reviewed in addition to the full review checklists for
erosion control; plans, reports and escrows. Phased materials are required when a project is over 5 acres and
highly recommended for any projects that require native seeding.
All sections referenced are mandatory requirements from FCDCM Chapter 2 “Development Submittal Requirements”
1) Are the erosion control plans clearly delineating the various phases of a project?
See 6.1.3.6
Yes No N/A
a. Where scale and detail require, is an index map sheet or key map included and
affixed to a corner of the erosion control plan map sheets? See 6.1.3.6
Yes No N/A
b. Are all the control measures in the various phases included in the erosion
control plans?
Yes No N/A
2) Is there a section in the erosion control report dedicated to the discussion of
phases? See 6.1.4.7
Yes No N/A
a. Does the Phasing section describe an estimated schedule for when each phase
will begin and be stabilized? See 6.1.4.7
Yes No N/A
b. Does the Phasing section describe how the site will be broken into phases? See
6.1.4.7
Yes No N/A
c. Does the Proposed Construction Activities Section of the erosion control report
include the Total Area of Each Phase? See 6.1.4.3
Yes No N/A
3) Is there a simple map to attach with the escrow calculation sheets clearly showing
the boundaries of each phase of the erosion control escrow? See 6.1.5
Yes No N/A
4) Are there any individual security calculation sheets for each phase shown on the
map? See 6.1.5
Yes No N/A
5) Is there a need for Native Seed areas to be a separate phase so that funds can be
returned on the rest of the project after completion and only hold escrow for those
area that are still left waiting for seed to grow?
Yes No N/A
Ver 2.0 – 04/2020
Evaluation of Materials
Unique Conditions To evaluate
Prior Site Contamination
Are there known environmental issues or prior site contamination with the site
that will need to be mitigated for?
(Asbestos in the soil, superfund sites, beet tailings, old landfills, industrial area, old
gas station, old dry cleaners, or other legacy structures that could have produced
chemical contaminations)
Yes No N/A
If this is a “yes” please ensure this information is included in the erosion control report as this is an addition pollutant
source beyond the 16 standard pollutant sources. Please include how to control the contaminated soils and
appropriate methods to handle such materials, if no report is required please include a length page note stating how
to handle the materials. The areas of concern should also be marked on the plans to have a guess as to where they
are located within the disturbed area.
Demo Activities
Are the approximate areas to be exposed from the building and structure removal
easily identified on the plans?
Yes No N/A
Is the estimated length of interim time called out between demo work and site
grading?
Yes No N/A
Will the starting of construction really be immediate? (Asked because only about
5% of the projects start within a month of demo, in all reality and most can take 3-8
months before final approval and permitted construction can begin this is time that
exposed dirt areas are typically not looked after or managed by demo contractors)
Yes No N/A
Are temporary controls called out to be used in the interim to prevent run-off of
the exposed soil between demo and site work?
Yes No N/A
Will site access be limited to prevent vehicles from driving through the exposed
soils?
Yes No N/A
Will temporary seeding and mulching need to happen as the area is exposed for
months?
Yes No N/A
Will the materials remain on site for any length of time? Yes No N/A
Will the structures be fully mitigated for asbestos before any demolition begins? Yes No N/A
Will the materials remain on site for any length of time? Yes No N/A
Will the structures be fully mitigated for asbestos before any demolition begins? Yes No N/A
Will water be used to prevent dust to be suspended during demolition? Yes No N/A
High Ground Water
Does the plan call out for a liner in the concrete wash out? (if a mobile unit is not
being implemented) This liner is needed as there is a significant nexus between
ground water and wash water that could negatively impact and become a source of
contamination to the groundwater.
Yes No N/A
Is there anticipated trenching of subgrade in the high ground water area? This work
will typically encounter water and will need a plan to address the water in the
trench and usually require dewatering activities. (See dewatering for further
questions)
Yes No N/A
Are there areas that will require seeding that may have water inundate for a long
period of time? This might require planning for the optimum time to seed where
the ground water will not choke out the seed and/or selecting the appropriate seed
type that will be able to handle highly saturated ground that serves as a source to
promote seed growth.
Yes No N/A
If no dewatering is anticipated with a project with high water, are their notes about
how handle dewatering if high water is encountered?
Yes No N/A
Dewatering and Pumping Activities
Ver 2.0 – 04/2020
Do the plans identify where the dewatering activity will pump the water to? Yes No N/A
Do the plans anticipate how much water is expected to be pumped? Yes No N/A
Will this be able to have some form of energy dissipation to not become an erosion
source when pumped?
Yes No N/A
Will it be a small enough volume of water that it will not discharged off site? If not
able to contain to site, a State Dewatering permit will be needed.
Yes No N/A
Are the pumps adequately sized to handle the appropriate volumes of water and
enough power to divert flows the anticipated pumping distance?
Yes No N/A
Does the erosion control plan have a note explaining that a dewatering permit is
needed if water is to be discharged off site?
Yes No N/A
Has the dewatering permit already been applied for? (permit needs to be approved
before dewatering activities are to occur this can be a 45-day lead time at the State)
(Conditions of the dewatering activities should be kept with the erosion control
materials on site, there should also be some description of what frequency samples
are being taken and what the samples are being tested for)
Yes No N/A
Is the dewatering activity near a contaminated location? (if contaminated soils are
present, dewatering activities may require the pulling of a remediation permit)
(Conditions of those remediation activities should be kept with the erosion control
materials on site)
Yes No N/A
Is there a copy of the Dewatering permit? A copy should be placed with the erosion
control materials when that has been approved.
Yes No N/A
Run on Flows
Are the flows identified on the erosion control plans? Yes No N/A
Do those flows identify if they are concentrated of distributed surface flows? Yes No N/A
Do the plans identify how much water will inundate the site? Yes No N/A
How much area will be impacted by these flows? Yes No N/A
Will some, or all, of the work expect to continue if inundated? Yes No N/A
Are there additional structures or pumping activities that will be used and shown
on the plans to divert the flows from encountering the dirt on site, i.e. pump
around the disturbed area?
Yes No N/A
Are there means to control and treat the additional flow once it has encountered
the dirt on site?
Yes No N/A
Is there time delays built into the project due to weather constraints or when work
areas are inundated?
Yes No N/A
Are the stored materials and hazardous materials shown on the plans located away
from the run on flow?
Yes No N/A
Are there notes or directions on what to do if run on flows cause an upset
condition?
Yes No N/A
Is there a list of contractors who could help restore the project if impacted by an
upset condition?
Yes No N/A
Working in water way
Have a 404 Permit been issued by the Army Corps of Engineers? Yes No N/A
Have a 401 Water Quality Certification been pulled from the State? Yes No N/A
Have surface flows that would encounter construction soils (such as a bank repair
location, coffer dam installation, or stream crossing) been included in the project
design? If so, the water moving across a property by State definition is considered a
dewatering activity and would require a dewatering permit to be pulled
Yes No N/A
As anticipated surface flows encounter those construction soils, is there an
anticipated water volume that will interact with exposed soils planned for?
Yes No N/A
Ver 2.0 – 04/2020
Are controls selected based upon those volume? Yes No N/A
Will there be hard armoring along the bank for permanent stabilization? (i.e.
riprap)
Yes No N/A
Will there be areas that will have grass or vegetation for permanent stabilization? Yes No N/A
Will those vegetated areas be blanketed or hydro-mulched? Yes No N/A
Will more aggressive control measures be needed for stabilization due to steep
slopes, run on flows, or concentrated flows?
Yes No N/A
Is the seeding a realistic expectation based upon river flows and the seasonal
constraints?
Yes No N/A
Are the activities going to be conducted in the wintertime to minimize flow contact
with dirt?
Yes No N/A
Will coffer dams be used? If so, is there a liner or impermeable layer to prevent
mixing flowing water from scouring out the coffer dam and making that material
become a pollutant source?
Yes No N/A
Will there be above or in river crossings? Is it adequately sized and armored to
prevent washing out and away of the pipes and materials? Is there a detail showing
how the crossing will be designed and sized? Is the crossing shown on the erosion
control Plan?
Yes No N/A
Ver 2.0 – 04/2020
Minor Amendment Specific Items
Key thing here is that these types of reviews build upon the designs of old plans that were approved prior. On
these projects, it is important to first identify if the proposed changes significantly alter the scope of work in a way
that may require additional Control Measures. Many times, these minor amendments are facades or elevation
changes and do not affect the erosion control or will not disturb enough new area to trigger erosion control
requirements. When the submitted materials for a minor amendment significantly change the area of disturbance,
location of site or the scope of work it may require a reevaluation of the materials and potentially trigger a full
review of the erosion control materials. It is also important to note that if the materials were approved under prior
stormwater criteria, the old project planning materials will need to be brought up and held to the current
standards which many times requires the applicant to (re)produce reports, plans, or escrow calculations (see those
requirements under the full review process) that meet our current standard.
1) Are all the existing site conditions clearly different than the proposed changes? Yes No N/A
2) If these amendments are of an older project, have those previous materials been
updated to fulfill current drainage criteria?
Yes No N/A
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SheetSALUD FAMILY HEALTH CENTERDRAWING FILENAME: P:\1067-001\Dwg\Drng\1067-001_EROS.dwg LAYOUT NAME: ER4 DATE: Apr 07, 2021 - 11:12am CAD OPERATOR: masonLIST OF XREFS: [NES-xborder] [1067-001_xGRAD] [1067-001_xSITE] [1067-001_xTOPO] [1067-001_xEXST] [1067-001_xPUTIL] [1067-001_xGRAD_OVERLOT] [1067-001_xPHAS_Table]These drawings areinstruments of serviceprovided by NorthernEngineering Services, Inc.and are not to be used forany type of constructionunless signed and sealed bya Professional Engineer inthe employ of NorthernEngineering Services, Inc.NOT FOR CONSTRUCTIONREVIEW SETENGINEERNGIEHTRONRN04/07/2021301 North Howes Street, Suite 100Fort Collins, Colorado 80521www.northernengineering.comPhone: 970.221.4158of 45
CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER UTILITIES.
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what'sbelow.
before you dig.Call
R
DateCity Engineer
Date
Date
Date
Date
Stormwater Utility
Parks & Recreation
Traffic Engineer
Date
Water & Wastewater Utility
City of Fort Collins, Colorado
UTILITY PLAN APPROVAL
Environmental Planner
( IN FEET )
0
1 INCH = 60 FEET
60 60 120 180
NORTH
ER4 EROSION CONTROL PLANSTATICLEGEND:
PROPOSED CONTOUR
PROPOSED STORM SEWER
PROPOSED SWALE
EXISTING CONTOUR
PROPOSED CURB & GUTTER
PROPERTY BOUNDARY
PROPOSED INLET
UDPROPOSED UNDERDRAIN
WATTLE DIKE
INLET PROTECTION IP
VEHICLE TRACKING CONTROL PAD
VTC
SFSILT FENCE SF SF
ROCK SOCK RS
RIP RAP RR
1.CONTRACTOR SHALL IMMEDIATELY STABILIZE ALL DISTURBED SLOPES BY
CRIMP MULCHING OR SIMILAR METHODS. CONTRACTOR TO USE CDOT STRAW
MULCH SPECS UNLESS OTHERWISE DIRECTED.
2.SWMP ADMINISTRATOR:
Contact ________________________________
Company ________________________________
Address ________________________________
Phone ________________________________
3.CONTRACTOR TO PROVIDE VEHICLE TRACKING CONTROL FOR CONCRETE
WASHOUT AREA IF ACCESS IS OFF PAVEMENT.
4.DRYWELLS AND BIORETENTION MEDIA TO BE INSTALLED AFTER STABILIZATION
OF OVERLOT GRADING.
5.ALL DISTURBED SOILS SHALL BE RESEEDED WITH A COVER CROP UPON
COMPLETION OF THE INFRASTRUCTURE IMPROVEMENTS. (SEE LANDSCAPE
PLANS) THE RECOMMENDED SPECIES AND APPLICATION RATES OF PURE LIVE
SEED FOR COVER CROPS ARE AS FOLLOWS:
GREAT BASIN WILRYE 3LBS/ACRE
GREEN NEEDLEGRASS 2LBS/ACRE
INDIAN RICEGRASS 1LBS/ACRE
SLENDER WHEATGRASS 2LBS/ACRE
THICKSPIKE WHEATGRASS 3LBS/ACRE
WESTERN WHEATGRASS 4LBS/ACRE
TRITICALE 10LBS/ACRE
WINTER WHEAT 5LBS/ACRE
6.REFER TO THE FINAL DRAINAGE REPORT FOR SALUD FAMILY HEALTH CENTER
DATED JUNE 24, 2020 FOR ADDITIONAL INFORMATION.
7.SEE LANDSCAPE PLANS FOR PERMANENT STABILIZATION
GENERAL NOTES:
WD
TRAFFIC CONTROL BARRICADE TCB
CONCRETE WASH AREA CWA
OUTLET PROTECTION OP
CFCONSTRUCTION FENCE CF CF
LIMITS OF DISTURBANCE LOD
MUSEEDING & MULCH (SEE LANDSCAPE PLANS)
TABLE OF CONSTRUCTION SEQUENCE
AND BMP APPLICATION
CONSTRUCTION PHASE MOBILIZATION DEMOLITION GRADING
BEST MANAGEMENT PRACTICES (BMPS)
STRUCTURAL "INSTALLATION"
Construction & Silt Fence Barriers *
Flow Barriers (Wattles) *
Inlet Filter Bags *
Rip Rap
Vegetative
Temporary Seeding Planting
Mulching / Sealant
Permanent Seeding Planting
Sod Installation
Rolled Products : Netting / Blankets / Mats
Contour Furrows (Ripping / Disking)
Sediment Basin
Rock Bags *
UTILITIES
INSTALLATION
FLAT WORK
INSTALLATION
VERTICAL
INSTALLATION LANDSCAPE DEMOBILIZATION
Vehicle Tracking Pad *
* All Temporary BMPs to be Removed once Construction is Complete
Other:
Any prior inlets that could use protecting
Any prior inlets that could use protecting
Anytime the site will sit dormant longer than 30 Days
Anytime the site will sit dormant longer than 30 Days
Anytime the site will sit dormant longer than 30 Days
Under slope stabilization rolled products. Reseeding may be required.
NOTE:
ALL BMPS SHOWN ON THIS PLAN ARE GRAPHIC
REPRESENTATIONS ONLY. FINAL DETERMINATION OF SIZE
AND LOCATION SHALL BE DETERMINED BY THE CONTRACTOR
AND DOCUMENTED ON THE DYNAMIC SITE PLAN.
SF SF SFSFSFSFSFSFSFSFSFSFSFSFSF
SF
SF
MU
MU
ANY DISTURBED PORTIONS OF
THE DITCH MUST BE RE-SEEDED
AND MULCHED
1.IT SHOULD BE NOTED THAT ANY EROSION CONTROL PLAN SERVES ONLY
AS A GUIDELINE TO THE CONTRACTOR. STAGING AND/OR PHASING OF
BEST MANAGEMENT PRACTICES (BMPs) IS EXPECTED. ADDITIONAL AND/OR
DIFFERENT BMPs FROM THOSE ORIGINALLY DEPICTED MAY BE NECESSARY
DURING CONSTRUCTION DUE TO CHANGING SITE CONDITIONS OR AS
REQUIRED BY LOCAL AUTHORITIES.
2.THIS EROSION CONTROL PLAN IS SCHEMATIC IN NATURE. AS SUCH,
GRAPHICAL SYMBOLS MAY NOT BE TO SCALE, NOR ARE THEY
NECESSARILY SHOWN IN THEIR EXACT LOCATION.
3.THE CONTRACTOR SHALL BE RESPONSIBLE FOR ALL PERMITTING (CITY,
STATE DISCHARGE PERMIT, ETC.) AND COMPLIANCE WITH GOVERNING
AUTHORITIES. IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR (OR
PERMIT HOLDER) TO ENSURE EROSION CONTROL MEASURES ARE
PROPERLY MAINTAINED AND FOLLOWED.
4.CONTRACTOR SHALL IMPLEMENT THE APPROPRIATE EROSION CONTROL
MEASURES ACCORDING THE THE CONSTRUCTION SEQUENCING AND LEVEL
OF SITE STABILIZATION.
5.CONTRACTOR SHALL IMPLEMENT APPROPRIATE INLET PROTECTION FOR
ALL STORM DRAINS, SWALES, PONDS AND RAIN GARDENS UNTIL SITE IS
FULLY STABILIZED.
6.CONTRACTOR SHALL IMPLEMENT APPROPRIATE INLET PROTECTION FOR
DOWNSPOUT CONNECTIONS, TO THE STORM DRAIN SYSTEM, UNTIL
CONNECTION IS ESTABLISHED WITH DOWNSPOUT.
7.INLET PROTECTION SHALL BE ADAPTED, AS NECESSARY, TO THE
SURROUNDING SURFACE TYPE AND CONDITION (i.e., STAKE-DRIVEN
WATTLES FOR BARE SOIL OR GRAVEL SOCKS FOR PAVEMENT, ETC.)
8.CONTRACTOR IS RESPONSIBLE FOR STABILIZING ALL SLOPES,
PARTICULARLY THOSE STEEPER THAN 6:1. CRIMP MULCHING, HYDRO
MULCHING, EROSION MATS, TEMPORARY IRRIGATION, AND ADDITIONAL
WATTLES OR SILT FENCING MAY BE NECESSARY TO ESTABLISH
VEGETATIVE COVER AND STABILIZE THE SLOPE.
9.ADDITIONAL WATTLES, SILT FENCE, OR OTHER MEASURES, MAY BE
NECESSARY TO ENSURE THAT EACH BUILDING PAD IS STABILIZED
THROUGHOUT CONSTRUCTION. AT NO TIME SHALL SEDIMENT BE
ALLOWED TO CROSS THE PUBLIC SIDEWALKS.
10.CONTRACTOR SHALL IMPLEMENT APPROPRIATE PERIMETER PROTECTION
FOR AREAS DIRECTING DRAINAGE OFFSITE. PERIMETER PROTECTION
SHALL BE ADAPTED, AS NECESSARY, TO THE SURROUNDING SURFACE
TYPE AND CONDITION (i.e., STAKE-DRIVEN SEDIMENT CONTROL LOGS OR
SILT FENCE FOR BARE SOIL, SAND BAGS OR GRAVEL SOCKS FOR
PAVEMENT, ETC.)
11.FUELING FACILITIES SHALL BE LOCATED AT LEAST ONE HUNDRED (100)
FEET FROM NATURAL BODY OF WATER, WETLAND, NATURAL DRAINAGE
WAY OR MANMADE DRAINAGE WAY. THE FUEL TANKS AND FUELING AREA
MUST BE SET IN A CONTAINMENT AREA THAT WILL NOT ALLOW A FUEL
SPILL TO DIRECTLY FLOW, SEEP, RUN OFF, OR BE WASHED INTO A BODY OF
WATER, WETLAND OR DRAINAGE WAY.
12.CONSTRUCTION WASTE STORAGE (DUMPSTERS) AND PORTABLE
SANITATION UNITS (CONSTRUCTION TOILETS) SHALL BE LOCATED AT
LEAST FIFTY (50) FEET FROM ANY STORMWATER INLET, WETLAND, OR
DRAINAGE WAY. SAID FACILITIES MUST BE SET IN A CONTAINMENT AREA
THAT WILL NOT ALLOW POLLUTANTS TO DIRECTLY FLOW, SEEP, RUN OFF,
OR BE WASHED INTO A BODY OF WATER, WETLAND OR DRAINAGE WAY.
DUMPSTERS SHALL BE LOCATED ON FLAT, STABLE GROUND, AND
CONSTRUCTION TOILETS SHALL BE STAKED DOWN.
13.THE CONTRACTOR AND ALL SUBCONTRACTORS WILL COOPERATE WITH
THE CITY'S CONSTRUCTION INSPECTORS BY CEASING OPERATIONS WHEN
WINDS ARE OF SUFFICIENT VELOCITY TO CREATE BLOWING DUST WHICH,
IN THE INSPECTOR'S OPINION, IS HAZARDOUS TO THE PUBLIC HEALTH AND
WELFARE.
14.WHERE SEASONAL CONSTRAINTS (E.G., DURING SUMMER AND WINTER
MONTHS) INHIBIT PERMANENT SEEDING OPERATIONS, DISTURBED AREAS
WILL BE TREATED WITH MULCH AND MULCH TACKIFIER OR OTHER
MATERIALS APPROVED BY EROSION CONTROL STAFF TO PREVENT
EROSION.
15.SEE LANDSCAPE PLANS FOR ADDITIONAL INFORMATION ON PLANTING,
REVEGETATION, HARDSCAPE AND OTHER PERMANENT SITE STABILIZATION
METHODS.
16.INDIVIDUAL RESIDENTIAL LOT CONSTRUCTION SHALL IMPLEMENT EROSION
CONTROL MEASURES SHOWN IN DETAIL 011 ON SHEET EC4
17.CONTRACTOR SHALL KEEP ALL PUBLIC STREETS SURROUNDING THE
PROJECT CLEAN FROM ANY CONSTRUCTION TRACK OUT AND WILL CLEAN
IT WITHIN 24 HOURS, SHOULD ANY TRACK OUT OCCUR.
18.ANY TRACKING ON CITY PUBLIC STREETS OR RIGHT OF WAY MUST
IMMEDIATELY CLEANED BY THE CONTRACTOR
19.ALL PERMANENT BMPS SHALL BE CONSTRUCTED IN PHASE 4 OF
CONSTRUCTION IN ORDER TO MINIMIZE THE POTENTIAL FOR
SEDIMENTATION
EROSION CONTROL NOTES:
STORMWATER MANAGEMENT PLAN (SWMP)
SALUD FAMILY HEALTH CENTER
Fort Collins, CO
April 7, 2021
Prepared for:
Salud Family Health Centers
John Santistevan
203 S. Rollie Avenue
Fort Lupton, CO. 80621
Prepared by:
301 North Howes Street, Suite 100
Fort Collins, Colorado 80521
Phone: 970.221.4158 Fax: 970.221.4159
www.northernengineering.com
Project Number: 1067-001
This Drainage Report is consciously provided as a PDF.
Please consider the environment before printing this document in its entirety.
When a hard copy is absolutely necessary, we recommend double-sided printing.
April 7, 2021
Salud Family Health Centers
203 S. Rollie Avenue
Fort Lupton, CO. 80621
RE: Stormwater Management Plan
Salud Family Health Center
To Whom It May Concern:
Northern Engineering Services, Inc. is pleased to submit this Stormwater Management Plan for the
Salud Family Health Center project. This report outlines Best Management Practices (BMPs) to be
implemented with the proposed construction in order to minimize potential pollutants in stormwater
discharges. Salud Family Health Center project SWMP does not address what to do in the case that
contaminated soil or groundwater is discovered.
We have prepared this report to accompany the Colorado Department of Public Health and
Environment General Permit for Stormwater Discharge Associated with Construction Activities (aka,
Stormwater Discharge Permit or SDP). The General Permit No. for this SDP is (to be filled-in by
permittee) and the Certification No. for this SDP is (to be filled-in by permittee). The Permit
Certification is Effective beginning (to be filled-in by permittee), and initial certification expires (to be
filled-in by permittee). A copy of the issuance cover letter can be found in the Appendix D of this
document (to be provided by permittee).
Please note: this Stormwater Management plan (including the Site Maps) is not a static document.
It is a dynamic device that should be kept current and logged as construction takes place. As such,
this version was prepared to facilitate initial plan approvals and permitting, but does not necessarily
reflect the final version, or the transitions throughout the construction process. As the site develops
and changes, the Contractor is expected and encouraged to make changes to what is contained
herein so that the SWMP works as effectively and efficiently as possible. It shall be the
responsibility of the SWMP Administrator and/or the permit holder (or applicant thereof) to ensure
the plan is properly maintained and followed.
If you should have any questions or comments as you review this report, please feel free to contact
us at your convenience.
Sincerely,
NORTHERN ENGINEERING SERVICES, INC.
Mason Ruebel, EI
Project Engineer
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan
TABLE OF CONTENTS
Vicinity Map
1.0 General Requirements ................................................................................................ 1
1.1 Objectives .................................................................................................................. 1
1.2 SMWP Availability ...................................................................................................... 1
1.3 Definitions.................................................................................................................. 1
1.4 Additional Permitting ................................................................................................... 1
2.0 Narrative Site Description ........................................................................................... 2
2.1 Existing Site Description .............................................................................................. 2
2.2 Nature of Construction Activity ..................................................................................... 2
2.3 Sequence of Major Activities ......................................................................................... 2
2.4 Site Disturbance ......................................................................................................... 2
2.5 Wind and Rainfall Erodibility ........................................................................................ 2
2.6 Existing Data .............................................................................................................. 2
2.7 Existing Vegetation ...................................................................................................... 3
2.8 Potential Pollution Sources ........................................................................................... 3
2.9 Non-stormwater discharges .......................................................................................... 4
2.10 Receiving Waters ........................................................................................................ 4
3.0 Stormwater Management Controls ............................................................................... 4
3.1 SWMP Administrator ................................................................................................... 4
3.2 Best Management Practices (BMP’s) for Stormwater Pollution Prevention.......................... 4
3.3 Structural Practices for Erosion and Sediment Control ..................................................... 5
3.4 Phased BMP Installation .............................................................................................. 5
3.5 Non-Structural Practices for Erosion and Sediment Control .............................................. 8
3.6 Material Handling and Spill Prevention ........................................................................ 10
3.7 Dedicated Concrete or Asphalt Batch Plant .................................................................. 11
3.8 Vehicle Tracking Control ............................................................................................ 11
3.9 Waste Management and Disposal ............................................................................... 11
3.10 Groundwater and Stormwater Dewatering .................................................................... 12
4.0 Final Stabilization and Long-Term Stormwater Management ........................................ 12
4.1 Final Stabilization ..................................................................................................... 12
4.2 Long-Term Stormwater Management ........................................................................... 13
5.0 Inspection, Maintenance and Record Keeping ............................................................. 13
5.1 BMP Inspection ........................................................................................................ 13
5.2 BMP Maintenance .................................................................................................... 13
5.3 Record Keeping ........................................................................................................ 14
6.0 Additional SWMP and BMP Resources ....................................................................... 16
References 17
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan
LIST OF TABLES:
Table 1 - Native Grass Seed Mix ......................................................................................... 13
APPENDICES:
APPENDIX A – Site Maps
APPENDIX B – Erosion Control Details
APPENDIX C – Landscape Plan
APPENDIX D – Copies of Permits/Applications
APPENDIX E – Inspection Logs
APPENDIX F – Contractor Inserts (as needed)
APPENDIX G – Contractor Inserts (as needed)
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan 1
1.0 General Requirements
1.1 Objectives
The objective of a Stormwater Management Plan (SWMP) is to identify all potential sources of
pollution likely to occur as a result of construction activity associated with the site construction, and
to describe the practices that will be used to reduce the pollutants in stormwater discharges from
the site. The SWMP must be completed and implemented at the time the project breaks ground,
and revised as necessary as construction proceeds to accurately reflect the conditions and practices
at the site.
This report summarizes the Stormwater Management Plan for the construction activity that will
occur with Salud Family Health Center in Fort Collins, CO. This plan has been prepared according
to regulations of the Colorado Department of Public Health and Environment (CDPHE), Water
Quality Control Division.
1.2 SMWP Availability
This report is intended to remain on the aforementioned construction site to allow for maintenance
and inspection updates, and for review during inspection.
1.3 Definitions
BMP – Best Management Practice encompassing a wide range of erosion and sediment control
practices, both structural and non-structural in nature, which are intended to reduce or eliminate
any possible water quality impacts from stormwater leaving a construction site.
Erosion Control BMPs – Practices that PREVENT the erosion of soil, such as minimizing the amount
of disturbed area through phasing, temporary stabilization, and preserving existing vegetation.
Sediment Control BMP’s – Practices to REMOVE sediment from runoff, such as sediment basins,
silt fence, or inlet protection.
Non-structural BMP’s – The implementation of methods, practices, and procedures to minimize
water quality impacts, such as the preservation of natural vegetation, preventive maintenance and
spill response procedures.
Structural BMP’s – Physical devices that prevent or minimize water quality impacts, such as
sediment basins, inlet protection, or silt fence.
1.4 Additional Permitting
As mentioned above, this Stormwater Management Plan is associated with the Colorado
Department of Public Health and Environment Stormwater Permit that is issued by the Water
Quality Control Division of the CDPHE. Additional Environmental permitting not described in this
report may be required as a part of this project. An example is the Construction Dewatering Permit
for groundwater. Another example is the Air Pollution Emission Notice (APEN). The CDPHE
website contains links to both of these permits, as well as many other potential permits. The
Contractor is responsible for ensuring the proper permits are acquired.
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan 2
2.0 Narrative Site Description
2.1 Existing Site Description
The project site is located in Section 10 of Township 7 North, Range 69 West of the 6th Principal
Meridian, City of Fort Collins, County of Larimer, State of Colorado. The project site is bordered to
the north primarily by open space, to the east by industrial and residential areas, to the south by
Laporte Avenue, and to the west by Lilac Apartments.
2.2 Nature of Construction Activity
The project consists of the construction of a roadway, parking lots, a new building, and the removal
of an existing building, and the installation of water, sanitary sewer, and storm.
2.3 Sequence of Major Activities
To complete the project, many basic categories of construction activity will take place. The first
part will be the removal of the existing building on lot 4 and a portion of the existing Salud building
along Laporte Avenue. With the demolition of these buildings there will also be the removal of
existing asphalt, gravel, concrete, and utilities.
New curb/gutter, paving, and sidewalks are expected to begin after existing infrastructure has been
demolished and the soil on the site is graded to the designed elevations. This will be followed by
utility and storm line installations and simultaneously foundation excavation will begin. Vertical
construction of the buildings will commence after foundation and underground work is complete.
The final stages of site construction will be fine grading of the areas around the buildings and
landscaping throughout the site. The aforementioned sequencing is an initial best guess and is
subject to change at the Contractor’s discretion.
2.4 Site Disturbance
The entire project boundary contains approximately 23 acres. The site disturbance will be over
approximately half of the site.
2.5 Wind and Rainfall Erodibility
The site is located within a moderate risk Erodibility Zone per the City of Fort Collins Wind
Erodibility Map. According to the Natural Resources Conservation Service website -
www.websoilsurvey.nrcs.usda.gov, the averaged soil erosion factor (K), which indicates the
susceptibility of a soil to sheet and rill erosion, is 0.32. This value is indicative of soils moderately
susceptible to rainfall erosion.
Impervious area (i.e. roof area, concrete walks and asphalt parking area) and landscaping will
permanently stabilize the areas disturbed by the proposed construction activity; therefore, the
likelihood of erosion and sediment problems occurring on-site is minimal. During the interim period,
in which the disturbed areas are open, the BMPs described herein were selected to prevent erosion
and limit sediment migration.
2.6 Existing Data
In order to complete the associated construction plans, a topographical survey of the site was
completed. This survey consisted of field measurements made by Northern Engineering on February
13, 2015. In addition to the field survey, the Natural Resources Conservation Service (NRCS) Soil
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan 3
Survey was used to determine existing soil types found on-site. According to the NRCS Soil Survey,
the site consists of Nunn Clay Loam and Fort Collins Loam which fall into Hydrologic Soil Group C.
More site-specific exploration was completed by Earth Engineering Consultants (Project No.
1162045 | Date: June 9,2016). The report contains the results of the subsurface geotechnical
exploration performed on the site. These findings include the test results for the borings taken at
the site as well as the recommendations concerning these results. The borings found that most of
the site is composed of vegetation/topsoil underlain by sandy lean clay and bedrock. The lean clays
on the site show low potential to swell with increased moisture while the bedrock shows moderate
swell potential.
2.7 Existing Vegetation
The existing site vegetation consists primarily of native and non-native grasses. The remainder of the
site outside of the wetland has grasses that naturally grow in clumps, which inevitably leads to
some bare areas. The site has approximately 50% vegetative cover with the remainder of the site
consisting of asphalt and infrastructure. It is highly recommended that pre-construction photos be
taken to clearly document vegetative conditions prior to any disturbance activities.
2.8 Potential Pollution Sources
As is typical with most construction sites, there are a number of potential pollution sources which
could affect water quality. It is not possible for this report to identify all materials that will be used
or stored on the construction site. It is the sole responsibility of the Contractor to identify and
properly handle all materials that are potential pollution sources. The following are some common
examples of potential pollution sources:
· Exposed and stored soils
· Management of contaminated soils
· Off-site tracking of soils and sediment
· Loading and unloading operations
· Outdoor storage of building materials, fertilizers, chemicals, etc.
· Vehicle and equipment maintenance and fueling
· Significant dust or particulate generating processes
· Routine maintenance activities involving fertilizers, pesticides, detergents, fuels, solvents, oils, etc.
· On-site waste disposal practices (waste piles, dumpsters, etc.)
· Concrete truck/equipment washing
· Non-industrial waste sources that may be significant, such as worker trash and portable toilets
· Uncovered trash bins
· Other areas or procedures where potential spills can occur
· Stockpiling of materials that can be transported to receiving waterway(s)
Management of Contaminated Soils: We are not aware of on-site contaminated soils. However, the
contractor should conduct a thorough, pre-construction environmental site assessment. If
contaminated soils are discovered, the contractor will identify appropriate practices and procedures
for the specific contaminants discovered on-site.
Loading and Unloading Operations: As site development and building construction progresses,
space constraints will limit the number of on-site locations for loading and unloading activities. The
contractor will be responsible for the proper handling and management of pollution sources during
loading and unloading operations.
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan 4
Dedicated Asphalt and Concrete Batch Plants: Neither a dedicated asphalt nor concrete batch
plant will be constructed on-site.
2.9 Non-stormwater discharges
The Stormwater Construction Permit only covers discharges composed entirely of stormwater.
Emergency firefighting water is the only authorized exception. Concrete Washout water can NOT be
discharged to surface waters or to storm sewer systems without separate permit coverage. The
discharge of Concrete Washout water to the ground, under specific conditions, may be allowed by
the Stormwater Construction Permit when appropriate BMPs are implemented.
The discharge of pumped stormwater, ONLY, from excavations, ponds, depressions, etc. to surface
waters, or to a municipal storm sewer system is allowed by the Stormwater Construction Permit, as
long as the dewatering activity and associated BMPs are identified in the Stormwater Management
Plan (SWMP) and are implemented in accordance with the SWMP.
Aside from the exceptions noted above, non-stormwater discharges must be addressed in a separate
permit issued for that discharge. If groundwater is encountered, and dewatering is required, a
Construction Dewatering Permit must be acquired from the Colorado Department of Public Health
and Environment.
2.10 Receiving Waters
With the construction on site, an interim pumped detention pond will be placed in the northwest
corner of Lot 6. The pond is to be located so that in the future a gravity tie-in to a City of Fort
Collins Regional Pond can be made. This Regional Pond is planned to be placed just northwest of
the project site.
3.0 Stormwater Management Controls
3.1 SWMP Administrator
A SWMP Administrator must be designated in conjunction with the Stormwater Permit. This person
shall be responsible for developing, implementing, maintaining, and revising the SWMP. The
SWMP Administrator will also be the contact for all SWMP-related issues and will be the person
responsible for the accuracy, completeness, and implementation of the SWMP. The Administrator
should be a person with authority to adequately manage and direct day-to-day stormwater quality
management activities at the site.
The SWMP Administrator for this site is:
Name: (to be filled-in by permittee)
Company: (to be filled-in by permittee)
Phone: (to be filled-in by permittee)
E-mail: (to be filled-in by permittee)
3.2 Best Management Practices (BMP’s) for Stormwater Pollution Prevention
Beginning from mobilization, and throughout the entire construction of the project, erosion control
devices shall be installed to ensure minimal pollutant migration. These erosion control devices may
be installed in phases, or not at all, depending on actual conditions encountered at the site. It is
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan 5
the responsibility of the Contractor to make the determination as to what practices should be
employed and when. In the event that a review agency deems BMPs to be insufficient, it shall be
the responsibility of the contractor to implement modifications as directed.
Best Management Practices (BMPs) are loosely defined as a method, activity, maintenance
procedure, or other management practice for reducing the amount of pollution entering a water
body. The term originated from rules and regulations in Section 208 of the Clean Water Act.
Details for Structural and Non-Structural BMPs have been included in Appendix B. These details
should be used for additional information on installation and maintenance of BMPs specified in this
report. It is also intended to serve as a resource for additional BMPs that may be appropriate for
the site that have not specifically been mentioned in the report.
3.3 Structural Practices for Erosion and Sediment Control
Structural BMPs are physical devices that are implemented to prevent erosion from happening or to
limit erosion once it occurs. These devices can be temporary or permanent, and installation of
individual components will vary depending on the stage of construction.
A table depicting construction sequence and BMP application/removal has been placed on the
“Dynamic Site Plan” to help document the implementation of these BMPs. Refer to the Stormwater
Management Plan Static Site Plan in the Appendix for the assumed location of all BMPs.
Construction Details for Temporary BMPs are located in the Appendix for reference.
Again, the final determination for which BMP’s will be installed, where they will be located, and
when they will be installed shall be made by the Contractor, along with all documentation
throughout the construction process.
3.4 Phased BMP Installation
It is important to recognize the four (4) major Development Phases as defined by the State of
Colorado’s Stormwater Discharge Permit (SDP). These four development phases (referred to as
Sequencing by the City of Fort Collins) have been distinguished to aid in the appropriate timing of
installation/implementation of BMPs at different stages of the construction process. These phases
are described as follows:
Phase I – Grading Stage; BMPs for initial installation of perimeter controls
Phase II – Infrastructure Stage; BMPs for utility, paving and curb installation
Phase III – Vertical Construction Stage; BMPs for individual building construction.
Phase IV – Permanent BMPs and final site stabilization.
The demolition of existing infrastructure on the Salud Family Health Center site is divided up into
two phases. The purpose of this phased demolition is to maintain the functionality of the existing
building while the remainder of the site is being constructed. After the new facility has been
constructed, the old facility will be demolished. It is anticipated that the only BMPs that will be
required with the building demolition will be silt fence and construction fence. This will require extra
due diligence from the SWMP administrator to ensure stormwater runoff is protected from erosion
as the overall project site shifts from phase to phase. A more detailed description of each phase’s
erosion control requirements can be found below. These descriptions are not all encompassing but
merely issues that may arise as the construction phasing progresses. See the Erosion Control Sheets
in the latest approved plan set for more details.
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan 6
Included in the back map pockets are two Site Plans: a “Static” Site Plan and a “Dynamic” Site
Plans. The “Static” plan serves to display the overall management plan all at once. However,
proper implementation of BMPs does not occur at once, and certain BMPs may move location in
the construction process; therefore, the “Dynamic” Site Plan is intended for the Contractor to write
in the BMP symbols to document the location and time the BMPs are installed and maintained
throughout the entire construction process.
Silt Fencing (Phase I & II)
Silt fencing shall be provided to prevent migration of sediment off-site or into adjacent properties.
All silt fencing shall be installed prior to any land disturbing activity (demolition, stockpiling,
stripping, grading, etc.). Silt fencing is to be installed prior to site excavation or earthwork
activities.
Inspections of the silt fence should identify tears or holes in the material, and should check for
slumping fence or undercut areas that allow flows to bypass the fencing. Damaged sections of the
silt fence should be removed to maintain BMP effectiveness, typically before it reaches a depth of 6
inches.
Silt fence should be installed, at a minimum, around the perimeter of the site to prevent runoff into
adjacent properties. During the demolition phase of the two main buildings, silt fence shall be
installed along the Larimer No. 2 Ditch and the north property line to mitigate sediment and debris
into the existing drainage ways.
Sediment Control Log – aka “Straw Wattles” and Rock Socks” (Phase I)
A Sediment Control Log is a linear roll made of natural materials, such as straw, coconut fiber, or
other fibrous material trenched into the ground and held with a wooden stake. Sediment Control
Logs can also be made with rocks wrapped in a metal mesh net, which provides more durability in
high traffic areas where they might get ran over or have where there is nowhere to drive a wooden
stake into the ground. Sediment Control Logs can be used in many instances. Examples include
perimeter control for stockpiles, as part of inlet protection designs, as check dams in small drainage
ways, on disturbed slopes to shorten flow lengths, or in lieu of silt fencing (where appropriate).
Sediment Control Logs should be inspected for excess sediment accumulation. Sediment should be
removed prior to reaching half the height of the log.
At a minimum, Sediment Control Logs should be used around soil stockpiles (including landscape
material) and at all stormwater discharge locations other than inlets.
Vehicle Tracking Control Pads (Phase I)
Vehicle tracking control pads shall be provided to minimize tracking of mud and sediment onto
paved surfaces and neighboring roadways. All vehicle tracking control pads shall be installed prior
to any land disturbing activity (demolition – as necessary, stockpiling, stripping, grading, etc.).
Location of vehicle tracking control pads will be located at any and all existing and future vehicle
accesses being used during any of the construction phases. These locations will primarily be
dictated by gates or openings in the temporary construction fencing that is expected to be installed.
Vehicle tracking control pads are to be installed prior to demolition (as appropriate), site excavation
or earthwork activities.
Vehicle tracking pads should be inspected for degradation and aggregate material should be
replaced as needed. If the area becomes clogged with water, excess sediment should be removed.
Aggregate material should remain rough, and at no point should aggregate be allowed to compact in
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan 7
a manner that causes the tracking pad to stop working as intended.
A vehicle tracking pad should be placed, at minimum, at the entrance to the site off Salud Parkway.
Inlet Protection (Phase I & II)
Inlet protection shall be provided for existing inlets to prevent sediment transport from adjacent
earthwork disturbance. Installation of these filters shall occur before adjacent earth disturbing
activities (Phase I implementation). Wattle type filters are to be implemented for new and existing
inlets where asphalt does not exist. For these inlets, if pavement is constructed adjacent to the
structure or if the area adjacent to the inlet is changed such that the wattle type filter is no longer
effective, it shall be the responsibility of the Contractor to ensure that an appropriate method is
used instead. For example, the wattle filter could be reused, or a gravel-block inlet filter may be
installed. It will be left to the discretion of the Contractor as to whether replacement of any inlet
filter is necessary.
Inlet protection should be inspected regularly for tears that can result in sediment entering an inlet.
Inlet protection should also be inspected for sediment accumulation upstream of the inlet, and
sediment should be removed when the less than half of the capacity is available, or per
manufacturer specifications.
The Contractor shall provide inlet protection for all proposed inlets as they are installed (Phase II
implementation).
Erosion Control Blankets (Phase II)
A temporary degradable rolled erosion control product composed of natural flexible fibers shall be
used on all seeded slopes 3:1 and greater (excluding mulched shrub bed areas). Erosion control
blankets should be utilized to provide erosion control and to facilitate vegetation establishment.
During installation, it is important to ensure that no gaps or voids exist under the material and that
all corners of the material are secured using stakes and trenching. Stakes should be made of
materials that are biodegradable. Continuous contact between the product and the soil is necessary
to avoid failure.
Erosion Control Blankets should be inspected regularly for signs of erosion, including beneath the
mat. If voids are apparent, they should be filled with suitable soil. Inspections should also identify
loose or damaged stakes, as well as loose portions of the blanket. If deficiencies are found, they
should be repaired or replaced.
At a minimum, Erosion Control Blankets shall be installed as deemed necessary in areas with
steeper than or equal to 4:1 slope.
Concrete Washout Area (Phase II & III)
A concrete washout should be provided on the site. The washout can be lined or unlined excavated
pits in the ground, commercially manufactured prefabricated containers, or aboveground holding
areas. The concrete washout must be located a minimum of 400 feet from any natural drainage
way or body of water, and at least 1000 feet from any wells or drinking water sources. Washout
areas should not be located in an area where shallow groundwater may be present. Contractor
shall clearly show the desired location and access to the Concrete Washout Area on the Stormwater
Management Plan - Dynamic Site Plan. Contractor shall place a Vehicle Tracking Pad if the
selected location for the Concrete Washout Area is detached from pavement. Clear signage
identifying the concrete washout should also be provided.
The Concrete Washout Area should be inspected regularly. Particular attention should be paid to
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan 8
signage to ensure that the area is clearly marked. Confirmation that the washout is being used
should also be noted to ensure that other undesignated areas of the site are not being used
incorrectly as a concrete washout.
An appropriate location for the concrete washout area is located to the north of the temporary
asphalt drive near the entrance of the site. This location is a suggestion only and can be relocated at
the discretion of the Contractor.
Permanent/Established Vegetation (Phase IV)
Permanent or established vegetation and landscaping is considered a permanent form of sediment
and erosion control for common open spaces, steep slopes and areas not exposed to prolonged
scour velocities, or acute incipient motion bed shear stresses that will create soil erosion, rill
formation and subsequent sediment transport. Areas where the previous conditions apply will
contain sufficient permanent BMPs, such as riprap or cobble mulch. Permanent vegetation shall
conform to the approved Landscape Plan prepared by Ripley Design, Inc. Permanent/Established
vegetation and hardscape defines Phase IV of development.
3.5 Non-Structural Practices for Erosion and Sediment Control
Non-Structural BMPs are practices or activities that are implemented to prevent erosion from
happening or to limit erosion once it occurs. These BMPs can be a practice resulting in physical
change to the site, such as mulching or slope stabilization. They can also result in behavioral
changes on the site, such as changes to construction phasing to minimize exposure to weather
elements, or increased employee awareness gained through training.
Protection of Existing Vegetation (Phases I-IV)
Protection of existing vegetation on a construction site can be accomplished through installation of a
construction fence around the area requiring protection. In cases where up-gradient areas are
disturbed, it may also be necessary to install perimeter controls to minimize sediment loading to
sensitive areas such as wetlands.
Trees that are to remain after construction is complete must be protected. Most tree roots grow
within the top 12”-18” of soil, and soil compaction is a significant threat to tree health. As such,
particular care should be taken to avoid activities within the drip-line of the tree. Direct equipment
damage should also be prevented. The most effective way to ensure the health of trees is to
establish a protection zone at the drip-line of the tree to prevent unintended activity in the area
directly surrounding the tree.
Fencing should be inspected and repaired when needed. If damage occurs to a tree, an arborist
should be consulted on how to care for the tree. If a tree is damage beyond repair, the City Forester
should be consulted on remediation measures.
At a minimum, protection to all trees identified for retention on the plans by Ripley Design, Inc.
Stockpile Management (Phases I-III)
Stockpile management should be utilized to minimize erosion and sediment transport from soil
stockpiles. In general, soil stockpiles should be located a minimum of 100 feet from any drainage
way and 50 feet from any storm sewer inlets. Where practical, choose a stockpile location that will
remain undisturbed for the longest period of time as the phases of construction progress. Sediment
control BMPs should be placed around the perimeter of the stockpile, and a designated access point
on the upstream side of the stockpile should be identified. BMPs such as surface roughening,
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan 9
temporary seeding, mulching, erosion control blankets, or soil binders should be used to stabilize
the stockpile surface.
As a part of stockpile management, regular inspections of the perimeter controls should be
completed. If BMPs have been utilized to stabilize the surface of the stockpile, they should be
inspected and repaired as needed.
While soil stockpiles are not expected with this project, it is possible that foundation excavation or
the delivery landscaping material may generate temporary stockpiles. The location of any such
stockpiles shall be the responsibility of the SWMP Administrator.
Mulching (Phase I-III)
Mulching helps reduce erosion by protecting bare soil from rainfall impact, increasing infiltration,
and reducing runoff. Although often applied in conjunction with temporary or permanent seeding, it
can also be used for temporary stabilization of areas that cannot be reseeded due to seasonal
constraints. The most common type of mulch used is hay or grass that is crimped into the soil to
keep it secure. However, crimping may not be practical on slopes steeper than three to one
(3H:1V).
The Contractor shall mulch all planted areas within twenty-four (24) hours after planting. Only
weed-free and seed-free straw mulch may be used. Straw mulch should be applied at two (2) tons
per acre, and shall be adequately secured by crimping, tackifier, netting or blankets. Hydraulic
mulching may also be used on steep slopes or where access is limited. In the case that hydraulic
mulching is utilized, the Contractor shall use wood cellulose fibers mixed with water at two
thousands to two thousand five hundred (2,000-2,500) pounds per acre and organic tackifier at
one hundred to four hundred (100-400) pounds per acre.
The Contractor is responsible in applying wood chip mulch to all planted trees and shrubs as shown
on the Landscape Plan prepared by Ripley Design, Inc.
Wind Erosion/Dust Control (Phase I-IV)
Wind Erosion and Dust Control BMP’s help to keep soil particles from entering the air as a result of
land disturbing construction activities. Attached at the end of the Appendix B is the Fort Collins
Dust Prevention and Control Manual. The purpose of this manual is to establish minimum
requirements consistent with nationally recognize BMP’s for controlling fugitive dust emissions and
to describe applicable best management practices to prevent, minimize, and mitigate off-property
transport or off-vehicle transport of fugitive dust emissions pursuant to Chapter 12, Article X of the
Fort Collins City Code (§12-150 et. seq) for specific dust generating activities and sources.
Examples include use of a water truck or irrigation/sprinkler system to wet the top layer of disturbed
soil, seeding and mulching, soil binders, or wind fences.
Street Sweeping (Phases I-IV)
Street sweeping should be used to remove sediment that has been tracked onto adjacent roadways.
Roadways should be inspected at least once a day, and sediment should be removed as needed. A
check of the area inlet protection should be completed after sweeping to ensure nothing was
displaced during sweeping operations. Street sweeping can reduce the sediment washed into the
existing storm drain system. Street sweeping may be necessary on the existing hardscape areas
which receive runoff from the disturbed areas.
Saw Cutting Pollution Prevention (Phase I)
The following protocol is recommended to prevent dust and slurry from asphalt and concrete saw
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan 10
cutting activities from migrating into the existing storm drain system.
· Slurry and cuttings shall be vacuumed during cutting and surfacing operations
· Slurry and cuttings shall not remain on permanent concrete or asphalt pavement
overnight
· Slurry and cuttings shall not drain to any natural or constructed drainage conveyance
· Collected slurry and cuttings shall be disposed of in a manner that does not violate
groundwater or surface water standards
Good Housekeeping Practices (All phases)
Good housekeeping practices that will prevent pollution associated with solid, liquid, and hazardous
construction-related materials and wastes should be implemented throughout the project.
Examples of good housekeeping include providing an appropriate location for waste management
containers, establishing proper building material staging areas, designating paint and concrete
washout areas, establishing proper equipment/vehicle fueling and maintenance practices.
Development of a spill prevention and response plan is another example of Good Housekeeping
practices that should be used on the project. The following items are detailed examples of some of
the good housekeeping practices that should be utilized throughout the project. It should be noted
that a complete list of practices and detailed discussion regarding good housekeeping has been
included with Appendix B.
Street Sweeping and Vacuuming – Street sweeping and vacuuming should be used to remove
sediment that has been tracked onto adjacent roadways. Roadways should be inspected at least
once a day, and sediment should be removed as needed. A check of inlet protection should be
completed after sweeping to ensure nothing was displaced during sweeping operations.
Waste Management – Designate trash and bulk waste collection areas on-site. When possible,
materials should be recycled. Hazardous material waste should be segregated from other solid
waste. Waste collection areas should be located away from streets, gutters, watercourses, and
storm drains. Dumpsters should be located near site entrances to minimize traffic on disturbed
soils, and they should be placed on a level soil surface.
Establish Proper Building Material Handling and Staging areas – Clearly designate site areas for
staging and storage of building materials. Provide appropriate BMPs to ensure that spills or leaks
are contained.
Establish Proper Equipment/Vehicle Fueling and Maintenance Practices – If needed, create a
clearly designated on-site fueling and maintenance area that is clean and dry. Provide appropriate
BMPs to ensure that spills or leaks are contained.
3.6 Material Handling and Spill Prevention
Potential pollution sources, as discussed in earlier sections, are to be to be identified by the
Contractor. Spill prevention procedures are to be determined and put in place prior to construction
by the Contractor. A spill and flooding response procedure must also be determined and put in
place prior to construction by the Contractor. Additionally, steps should be taken to reduce the
potential for leaks and spills to come in contact with stormwater runoff, such as storing and
handling toxic materials in covered areas or by storing chemicals within berms or other secondary
containment devices.
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan 11
A notification procedure must be put in place by the Contractor, by which workers would first notify
the site construction superintendent, who would then notify the SWMP Administrator. Depending
on the severity of the spill, the site construction superintendent and SWMP Administrator would
possibly notify the Colorado Department of Public Health and Environment - Water Quality Control
Division, downstream water users, or other appropriate agencies. The release of any chemical, oil,
petroleum product, sewage, etc., which enter waters of the State of Colorado (which include
surface water, ground water, and dry gullies or storm sewers leading to surface water) must be
reported immediately to the Division’s emergency spill reporting line at (877) 518-5608. All
spills that will require cleanup, even if the spill is minor and does not need to be reported to the
state, should still be reported to the City of Fort Collins Utilities office at 970-221-6700.
While not expected with this project, it will be the responsibility of the Contractor to designate a
fueling area and take the necessary precautions to ensure that no stormwater pollution occurs in the
event that a fueling area is needed. Fueling areas shall be located a minimum 100 feet from all
drainage courses. A 12-inch high compacted earthen ridge capable of retaining potential spills
shall enclose fueling areas. Other secondary containment devices can be used instead of the
earthen ridge. The area shall be covered with a non-porous lining to prevent soil contamination.
Printed instructions for cleanup procedures shall be posted in the fueling area and appropriate fuel
absorbents shall be available along with containers for used absorbents within the fueling area.
3.7 Dedicated Concrete or Asphalt Batch Plant
There are not any dedicated concrete or asphalt batch plants anticipated with this project. In the
event that a plant is needed, the Contractor should be aware that additional permitting will be
required. In particular, an Air Pollutant Emission Notice (APEN) will need to be obtained from the
CDPHE.
3.8 Vehicle Tracking Control
In addition to the vehicle tracking pads discussed previously, additional measures can be taken to
minimize and control sediment discharges from the site due to vehicle tracking. These measures
can include fencing around the site to control access points. Regular street sweeping can also be
used to minimize the transmission of sediment from the site due to vehicles leaving the site. The
use of gravel parking areas and wash racks can also be implemented to ensure minimal vehicle
tracking from the site.
3.9 Waste Management and Disposal
It will be the responsibility of the Contractor to designate a concrete truck chute washout area and
to clearly identify that area. Detailed information about the design and maintenance of the Concrete
Washout can be found under the Structural Practices section of this report. At no time should
untreated wash water be allowed to discharge from the site or to enter a storm drain system or
stream. Upon completion of construction activities, the concrete washout material shall be removed
and properly disposed of prior to the area being restored.
Any waste material that currently exists on the site or that is generated by construction will be
disposed of in such a manner as to not cause pollutants in stormwater discharges. If waste is to be
stored on-site, it shall be in an area located a minimum of 100 feet from all drainage courses.
Whenever waste is not stored in a non-porous container, it shall be in an area enclosed by a 12-
inch high compacted earthen ridge or some other approved secondary containment device. The area
shall be covered with a non-porous lining to prevent soil contamination. Whenever precipitation is
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan 12
predicted, the waste shall be covered with a non-porous cover, anchored on all sides to prevent its
removal by wind, in order to prevent precipitation from leaching out potential pollutants from the
waste. On-site waste disposal practices, such as dumpsters, should be covered or otherwise
contained as to prevent dispersion of waste materials from wind. It shall also be the responsibility
of the Contractor to maintain a clean jobsite as to prevent dispersion of waste material and potential
pollutants into adjacent properties or waterways.
The location of, and protective measures for, temporary restroom facilities shall be the responsibility
of the SWMP Administrator.
3.10 Groundwater and Stormwater Dewatering
The BMPs selected for construction dewatering vary depending on the site-specific features, such as
soils, topography, discharge quantities, and discharge location. Typically, dewatering involves
pumping water from an inundated area to a BMP, prior to the water being released downstream
into a receiving waterway, sediment basin, or well-vegetated area. Acceptable BMPs included
discharging water into a sediment trap or basin, using a dewatering filter bag, or using a series of
sediment logs. A settlement tank or an active treatment system can also be utilized. Another
commonly used method to handle the pumped water is the “sprinkler method,” which involves
applying the water to vegetated areas through a perforated discharge hose. Dispersal from a water
truck for dust control can also be used to disperse the pumped water.
4.0 Final Stabilization and Long-Term Stormwater Management
4.1 Final Stabilization
All disturbed areas will be seeded, crimped and mulched. Soil amendments must comply with the
requirements found in City Municipal Code Sections 12-130, 12-131, and 12-132 (refer also to
Land Use Code 3.8.21).
Steps to Amend the Soil (Source: City Code Sections 12-130, 12-131, and 12-132):
· Loosen the top 8 inches
· Till or mix 3 cubic yards of amendment/1000 square feet into the top 6 inches of soil or
· Add 4 inches of topsoil that meets the following requirements:
Topsoil Requirements
Sand 20 - 75%
Silt 5 - 60%
Clay 5 - 30%
Organic Material 5% or more
pH 6.0 - 8.0
As defined by the Colorado Department of Public Health and Environment (CDPHE) in the General
Permit Application for Stormwater Discharges, “Final stabilization is reached when all soil disturbing
activities at the site have been completed, and uniform vegetative cover has been established with a
density of at least 70 percent of pre-disturbance levels or equivalent permanent, physical erosion
reduction methods have been employed.”
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan 13
Table 1 - Native Grass Seed Mix
Preferred
Varieties
Seeded Rate
(lbs. per acre,
drilled)
PLS
Seeded/acre
Leymus Cinereus Great Basin Wilrye Mangar 3 285,000
Nassella Viridula Green Needlegrass Lodorm 2 362,000
Chnatherum Hymenoides Indian Ricegrass Paloma, Nezpar 1 188,000
Elymus Trachycaulus Slender Wheatgrass Primar, Revenue 2 320,000
Elymus Lanceolatus Thickspike Wheatgrass Critana 3 580,500
Pascopyrum Smithii Western Wheatgrass Arriba, Barton 4 504,000
Totals 15 2,239,500
Species
4.2 Long-Term Stormwater Management
The method of long-term stormwater management will take place at the proposed rain garden and
extended detention pond. All disturbed areas will receive permanent paving or will be vegetated per
the Landscape Plan and Erosion Control Plan.
5.0 Inspection, Maintenance and Record Keeping
5.1 BMP Inspection
All temporary erosion control facilities shall be inspected at a minimum of once every two (2) weeks
and after each significant storm event or snowmelt. Repairs or reconstruction of BMPs, as
necessary, shall occur as soon as possible in order to ensure the continued performance of their
intended function. It is the responsibility of the SWMP Administrator to conduct bi-weekly
inspections, maintain BMPs if needed, to keep records of site conditions and inspections, and to
update the SWMP as necessary.
The construction site perimeter, disturbed areas, all applicable/installed erosion and sediment
control measures, and areas used for material storage that are exposed to precipitation shall be
inspected for evidence of, or the potential for, pollutants entering the drainage system. Erosion and
sediment control measures identified in the SWMP shall be observed to ensure that they are
operating correctly. Attention should be paid to areas that have a significant potential for
stormwater pollution, such as demolition areas, concrete washout locations, and vehicle entries to
the site. The inspection must be documented to ensure compliance with the permit requirements.
5.2 BMP Maintenance
Any BMP’s not operating in accordance with the SWMP must be addressed as soon as possible,
immediately in most cases, to prevent the discharge of pollutants. If modifications are necessary,
such modifications shall be documented so that the SWMP accurately reflects on-site conditions.
The SWMP needs to accurately represent field conditions at all times.
Uncontrolled releases of mud, muddy water, or measurable amounts of sediment found off-site will
be recorded with a brief explanation of the measures taken to clean-up the sediment that has left
the site, as well as the measures taken to prevent future releases. This record shall be made
available to the appropriate public agencies (Colorado Department of Public Health and
Environment, Water Quality Control Division; Environmental Protection Agency; City of Fort Collins;
etc.) upon request.
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan 14
Preventative maintenance of all temporary and permanent erosion control BMPs shall be provided
in order to ensure the continued performance of their intended function. Temporary erosion control
measures are to be removed after the site has been sufficiently stabilized as determined by the City
of Fort Collins. Maintenance activities and actions to correct problems shall be noted and recorded
during inspections.
Inspection and maintenance procedures specific to each BMP identified with this SWMP are
discussed in Section 3. Details have also been included with Appendix B.
5.3 Record Keeping
Documentation of site inspections must be maintained. The following items are to be recorded and
kept with the SWMP:
· Date of Inspection
· Name(s) and title(s) of personnel making the inspection
· Location(s) of sediment discharges or other pollutants from the site
· Location(s) of BMP’s that need to be maintained
· Location(s) of BMP’s that failed to operate as designed or proved inadequate
· Locations(s) where additional BMP’s are needed that were not in place at the time of inspection
· Deviations from the minimum inspection schedule
· Descriptions of corrective action taken to remedy deficiencies that have been identified
· The report shall contain a signed statement indicating the site is in compliance with the permit to the
best of the signer’s knowledge and belief after corrective actions have been taken.
Provided within Appendix E of this SWMP is an Example Inspection Log to aid in the record keeping
of BMP inspections and maintenance. Photographs, field notebooks, drawings and maps should be
included by the SWMP Administrator when appropriate.
In addition to the Inspection Log, records should be kept documenting:
· BMP maintenance and operation
· Stormwater contamination
· Contacts with suppliers
· Notes on the need for and performance of preventive maintenance and other repairs
· Implementation of specific items in the SWMP
· Training events (given or attended)
· Events involving materials handling and storage
· Contacts with regulatory agencies and personnel
· Notes of employee activities, contact, notifications, etc.
Records of spills, leaks, or overflows that result in the discharge of pollutants must be documented
and maintained. A record of other spills that are responded to, even if they do not result in a
discharge of pollutants, should be made. Information that should be recorded for all occurrences
includes the time and date, weather conditions, reasons for the spill, etc. Some spills may need to
be reported to authorities immediately. Specifically, a release of any chemical, oil, petroleum
product, sewage, etc., which may enter waters of the State of Colorado (which include surface
water, ground water and dry gullies or storm sewers leading to surface water) must be reported to
the CDPHE.
Additionally, the “Dynamic Site Plan” is intended to be a “living” document where the SWMP
Administrator can hand write the location of BMPs as they are installed to appropriately reflect the
current site conditions. Also on the “Dynamic Site Plan” is a “Table of Construction Sequence and
BMP Application/Removal” that the SWMP Administrator can use to document when BMPs were
ADDRESS:
200 S. College Ave. Suite 10
Fort Collins, CO 80524
PHONE: 970.221.4158
FAX: 970.221.4159
WEBSITE:
www.northernengineering.com
Salud Family Health Center
Stormwater Management Plan 15
installed or removed in conjunction with construction activities. These items have been included as
an aid to the SWMP Administrator, and other methods of record keeping are at his or her discretion.
This Stormwater Management Plan (both the text and map) is not a static document. It
is a dynamic device intended to be kept current and logged as construction takes place.
It shall be the responsibility of the SWMP Administrator and/or the permit holder (or
applicant thereof) to ensure the plan is properly maintained and followed. Diligent
administration is critical, including processing the Notice to Proceed and noting on the
Stormwater Management Plan the dates that various construction activities occur and
respective BMPs are installed and/or removed.
Project Number:1067-001 Location:Fort Collins, CO
Date:April 7, 2021 Total Acres:23.16
EROSION CONTROL MEASURE Units
Estimated
Quantity
Unit
Price
Total
Price
each 9 $350.00 $3,150.00
Outlet Protection each 1 $500.00 $500.00
Straw Wattle LF 3 $5.00 $15.00
each 11 $125.00 $1,375.00
each 1 $1,300.00 $1,300.00
each 1 $1,200.00 $1,200.00
Silt Fence LF 3320
acre 2.7 $1,000.00 $2,700.00
TOTAL =$10,240.00
TOTAL =$15,360.00
TOTAL =$34,740.00
REQUIRED AMOUNT OF SECURITY =$34,740.00
NOTE: 'Total Acres' represents total disturbed area.
(WHICHEVER IS GREATER)
Salud Family Health Center
Erosion Control Cost Estimate
Vehicle Tracking Control Pads
AMOUNT OF SECURITY = 1.5 x $10,240.00
Rock Socks
Vegetate Landscaped Areas
Inlet Protection
Concrete Washout Area
- OR -
COST TO VEGETATE: TOTAL ACRES x ($1000/acre) x 1.5
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P:\1067-001\Drainage\Erosion\1067-001_Erosion-Escrow-Estimate