HomeMy WebLinkAbout18133-163Serrano-TPM-2020-02-10N0
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S89°56'08"E 121.00'
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EXISTING PARCEL 1
LLA-SLOAL-19-0050
RECORDED: ________
PARCEL 3
0.335 ACRES
AVG SLOPE: 18.0%
PARCEL 2
0.418 ACRES
AVG SLOPE: 19.6%
PARCEL 1
0.225 ACRES
AVG SLOPE: 14.1%
S89°56'08"E 86.82'
N82°31'28"
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N89°56'08"W 100.00'
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(N) 20' PRIVATE DRAINAGE
EASEMENT
12
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(E) 60.00' ACCESS EASEMENT
PER 605-OR-244
(E) CENTERLINE OF POWER
POLE EASEMENT, EXCEPTION #2
(E) 10' WIDE UTILITY EASEMENT
EXCEPTION #7 (E) 5.00' WIDE SEWER EASEMENT
EXCEPTION #5 & #6
(E) 10.00' WIDE ACCESS EASEMENT
EXCEPTION #4
FIRETRUCK TURNAROUND
(N) 20' WIDE ACCESS ROAD
(N) 10'x10' PUBLIC UTILITY
EASEMENT
(N) 5'x10' PUBLIC UTILITY
EASEMENT
(N) 30' WIDE ROAD
PROJECT INFORMATION:
163 SERRANO HEIGHTS DR
SAN LUIS OBISPO, CA 93405
APN#:052-061-034
EXISTING LOT SIZE:1.56 ACRES
PROPOSED LOTS:SEE PLAN
ZONING:R-1
PROJECT TEAM:
OWNERS INFORMATION
JOHN ROURKE
163 SERRANO HEIGHTS DR.
SAN LUIS OBISPO, CA 93405
805.440.4973
PROJECT CIVIL ENGINEER & AGENT
ABOVE GRADE ENGINEERING
245 HIGUERA STREET
SAN LUIS OBISPO, CA 93401
805.540.1515
CITY BENCH MARK:
THE BENCH MARK FOR THIS PROJECT IS A FOUND CITY OF SAN LUIS
OBISPO BENCH MARK NUMBER 166A. BEING A LEAD AND TACK IN
TOP OF CURB AT THE BCR OF THE NORTHEASTERLY CURB OF
PALOMAR AND SERRANO
ELEVATION = 274.26' NAVD 88
PROPERTY DESCRIPTION:
A PORTION OF THE SOUTHEAST 1 / 4 OF THE
NORTHWEST 1 / 4 OF SECTION 27 OF TOWNSHIP 30
SOUTH, RANGE 12 EAST, IN THE CITY OF SAN LUIS
OBISPO, COUNTY OF SAN LUIS OBISPO, CALIFORNIA.
PREPARED BY:
SCOTT STOKES, PRESIDENT, PE 58256
ABOVE GRADE ENGINEERING
245 HIGUERA STREET
SAN LUIS OBISPO, CA 93401
( IN FEET )
1 INCH = FT.
10 2020
20
400
TENTATIVE PARCEL MAP:
PROPERTY LINES & EASEMENTS
SURVEY INFORMATION:
TOPOGRAPHIC SURVEY PERFORMED MARCH, 2018
BY MBS LAND SURVEYS
BASIS OF BEARINGS:THE BASIS OF BEARINGS FOR THIS SURVEY IS
A GEODETIC NORTH BASED ON A GPS
OBESERVATION FROM A 90d SET IN A DIRT
FIELD DISTANT S 22° 12' 12" E 138.25 FEET
FROM THE FOUND 1" IRON PIPE AT THE
SOUTHEAST CORNER OF D3.
SUPPLEMENTAL SURVEY PERFORMED DECEMBER, 2018
BY ABOVE GRADE ENGINEERING, INC
BOUNDARY:THE EXTERIOR BOUNDARY SHOWN IS PER
RECORD OF SURVEY 17-043.
VICINITY MAP: SAN LUIS OBISPO
SHEET INDEX:
TPM-1 PROPERTY LINES & EASEMENTS
TPM-2 SITE FEATURES
TPM-3 FUTURE IMPROVEMENTS
TPM-4 AVERAGE SLOPE CALCULATIONS
DATE:
163 SERRANO HEIGHTS DR.
SLO18-0151
FEBRUARY 11, 2019
SHEET NUMBER:
TPM-1
LEGEND:
(N) PRIVATE ACCESS, PRIVATE UTILITY AND DRAINAGE EASEMENT
(N) ROADWAYS
PRELIMINARY TITLE REPORT:
EXCEPTIONS LISTED ARE PER THE TITLE REPORT
PROVIDED BY FIRST AMERICAN TITLE COMPANY, ORDER
NUMBER 4001-5826767, DATED NOVEMBER 19, 2018.
APPROXIMATE EARTHWORK INFORMATION:
PARCEL 1: 30 CY CUT / 20 CY FILL
PARCEL 2: 20 CY CUT / 30 CY FILL
PARCEL 3: 25 CY CUT / 25 CY FILL
NOTE:THE EARTHWORK QUANTITIES SHOWN ARE FOR BONDING AND ESTIMATING PURPOSES
ONLY AND ARE CALCULATED FROM APPROXIMATE SUBGRADE TO EXISTING SURFACE.
THE QUANTITIES DO NOT TAKE CERTAIN FACTORS INTO ACCOUNT, INCLUDING, BUT
NOT LIMITED TO SUBGRADE, AREA OF OVEREXCAVATION AND RECOMPACTION,
SHRINKAGE AND EXPANSION OF THE SOIL. THE CONTRACTOR IS RESPONSIBLE FOR
CALCULATING EARTHWORK QUANTITIES FOR BIDDING AND CONSTRUCTION PURPOSES.
EXISTING PARCEL 1
LLA-SLOAL-19-0050
RECORDED: ________
PARCEL 3
0.335 ACRES
AVG SLOPE: 18.0%
PARCEL 2
0.418 ACRES
AVG SLOPE: 19.6%
PARCEL 1
0.225 ACRES
AVG SLOPE: 14.1%
SE
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NOTES:
1 EXISTING PROPERTY LINE
2 PROPOSED PARCEL PROPERTY LINE
3 EXISTING RETAINING WALL TO REMAIN
4 EXISTING RESIDENCE TO REMAIN
5 EXISTING FENCE LINE
6 EXISTING ASPHALT PAVED ROAD
7 EXISTING DRAINAGE INLET TO REMAIN
8 EXISTING STORM DRAIN LINE TO REMAIN
9 EXISTING ELECTRICAL POLE TO REMAIN
10 EXISTING SHED/BARN TO REMAIN
11 EXISTING OVERHEAD LINES
#
( IN FEET )
1 INCH = FT.
10 2020
20
400
TENTATIVE PARCEL MAP:
SITE FEATURES
DATE:
163 SERRANO HEIGHTS DR.
SLO18-0151
FEBRUARY 11, 2019
SHEET NUMBER:
TPM-2
CO
CO
CO
EXISTING PARCEL 1
LLA-SLOAL-19-0050
RECORDED: ________
PARCEL 3
0.335 ACRES
AVG SLOPE: 18.0%
PARCEL 2
0.418 ACRES
AVG SLOPE: 19.6%
PARCEL 1
0.225 ACRES
AVG SLOPE: 14.1%
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16% MAX
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3.5%
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NOTES:
1 EDGE OF FUTURE PAVED ROAD
2 TREE TO BE IMPACTED/REMOVED
3 EXISTING SEWER LINE TO BE PROTECTED-IN-PLACE
4 NOT USED.
5 NOT USED.
6 NOT USED.
7 INSTALL WATER METER
8 INSTALL SEWER SERVICE AND CLEANOUTS
9 INSTALL GAS LINE SERVICE
10 INSTALL WATER SERVICE LINE
11 EDGE OF FUTURE PAVED ROAD WITH AN AC DIKE
12 INSTALL CATCH BASIN WITH AC DIKE PERIMETER
13 INSTALL STORM DRAIN LINE
14 INSTALL UNDERGROUND CHAMBER SYSTEM
15 INSTALL FIRE HYDRANT THAT CAN PROVIDE 1000 GPM AT 20 PSI RESIDUAL
PRESSURE
16 EDGE OF 300 FOOT FIRE HYDRANT COVERAGE
17 EXISTING 30'-0" WIDE PAVED ROAD TO BE MAINTAINED
#
( IN FEET )
1 INCH = FT.
10 2020
20
400
TENTATIVE PARCEL MAP:
FUTURE IMPROVEMENTS
DATE:
163 SERRANO HEIGHTS DR.
SLO18-0151
FEBRUARY 11, 2019
SHEET NUMBER:
TPM-3
12" SHOULDER
20' WIDE ACCESS ROAD
12" SHOULDER
2:1 MA
X
2:1 MA
X
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ASPHALT DRIVEWAY SECTION TO BE
PER SOILS REPORT RECOMMENDATIONS
BASED ON T.I. OF 4.5 AND IN THE FIELD
R-VALUES
TYPICAL PRIVATE ROAD CROSS-SECTION
SCLE: NONE
AC DIKE
3.0%
NOTE:
·POST CONSTRUCTION REQUIREMENTS FOR DRAINAGE SHALL BE ADDRESSED
WITH EACH INDIVIDUAL LOT DURING THE CONSTRUCTION DOCUMENT PHASE. THE
PROPOSED DRIVEWAY WILL BE TREATED VIA THE PROPOSED CHAMBER SYSTEM.
·WIRE SERVICES TO BE INSTALLED WITHIN JOINT TRENCH WITH THE GAS SERVICE
LINES UNDERGROUND. FURTHER DETAILS SHALL BE PROVIDED DURING THE
CONSTRUCTION DOCUMENT PHASE.
10' LANE
12" SHOULDER
2:1 MA
X
2:1 MA
X
2:1
M
A
X
2:1
M
A
X
ASPHALT ROADWAY SECTION TO BE
PER SOILS REPORT RECOMMENDATIONS
BASED ON T.I. OF 5.5 AND IN THE FIELD
R-VALUES
TYPICAL SERRANO HEIGHTS CROSS-SECTION
SCLE: NONE
1.5%
12" SHOULDER
10' LANE
1.5%
STORMWATER FOR ACCESS ROAD:
·IMPERVIOUS AREA: 5,560 SQFT
·85TH PERCENTILE STORM DEPTH: 1.2 INCH
·RUNOFF COEFFICIENT OF PAVEMENT: 0.90
·REQUIRED TREATMENT VOLUME: 5560 x 1.2 x 0.9 x (1 / 12) = 500 CUBIC FEET
·PROPOSED CHAMBER SYSTEM: (2) MC-4500 CHAMBERS, (2) END CAPS AND
SURROUNDING ROCK LAYER FOR A TOTAL VOLUME OF 613 CUBIC FEET.
A
B
LAB =155.7'EAB =28'SAB =18.0%
WITH AN AVERAGE SLOPE OF 18.0% IN A R-1
ZONE, THEN DENSITY = ACREAGE x 4DU/ACRE
0.335 ACRES x (4DU/ACRE) = 1.34 DWELLING UNITS
WITH AN AVERAGE SLOPE OF 19.6% IN A R-1
ZONE, THEN DENSITY = ACREAGE x 4DU/ACRE
0.418 ACRES x (4DU/ACRE) = 1.67 DWELLING UNITS
SAVG = [(0.065 x 35.2) + (0.195 x 22.1) + (0.045 x 26.8) + (0.113 x 3.5)] / 0.418
SAVG = [(2.288) + (4.309) + (1.206) + (0.396)] / 0.418
SAVG = [8.199] / 0.418
SAVG = 19.6%
A1
A4
A3
WITH AN AVERAGE SLOPE OF 14.1% IN A R-1
ZONE, THEN DENSITY = ACREAGE x 7DU/ACRE
0.202 ACRES x (7DU/ACRE) = 1.41 DWELLING UNITS
SAVG = [(0.021 x 5.5) + (0.181 x 15.1)] / 0.202
SAVG = [(0.116) + (2.733)] / 0.202
SAVG = [2.849] / 0.202
SAVG = 14.1%
A1
A2 A3
AREA "A3" WILL BE EXCLUDED SINCE IT IS A STREET RIGHT-OF-WAY
( IN FEET )
1 INCH = FT.
15 3030
30
600
TENTATIVE PARCEL MAP: AVERAGE
SLOPE CALCULATIONS
DATE:
163 SERRANO HEIGHTS DR.
SLO18-0151
FEBRUARY 11, 2019
SHEET NUMBER:
TPM-4