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CfTY OF EVERETT STORMWATER MANAGEMENT MANUAI <br /> g. The depth of the gravel should be at least 12 inchcs over We entire inlet opening and <br /> extend at least l8 inches on all sides. <br /> 4. Curb Infe'Proleclion wilh Wooden Weir—Barrier formed around a curb inlct with a wooden <br /> ' frame and gravcl. <br /> a. Wire mesh with one-half-inch openings <br /> h Extra shength filtcr cicth <br /> c. Construct a framc <br /> d. Attach 4tie wire and filter fabric to the Gamc <br /> e. Pile coarse washed aggregate against wire/fabric <br /> C Place weight on frame anchors. <br /> 5. Block and Gravel Curb inlef Protecfron—9amer formed around an inlet with concrete blocSs <br /> and gravcl. See DCSS Drawing#211. <br /> a. Wire mesh with one-half-inch opcnings. <br /> b. Place two concrete blocks on their sides abuning the curb at either side of the inict <br /> opening. These are spacer blocks. <br /> c. Place a 2 x 4 stud tluough t6e outet holes of each spacer block to align the lront blocks. <br /> d. Place blocks on their sides across the front of the inlet and abutting the spacer blocks. <br /> e. Place wire mesh over t6e outside veRical face. <br /> E Pile coarse aggregate against the wire to the top of the bamer. <br /> 6. Inlet Fnbric Fence Fi(rer—DCSS Drawing# 2l2 pro��dcs an illuthation of thc use o(filter fabric <br /> as an inlet protcction option. <br /> Mainfenance Standaids <br /> I. Catch basin filters should be inspccted Gequendy,especially after storm cvents. If the insen <br /> becomes clogged, it should be cleaned or replaced. <br /> 2. For systems using stone filters: 1(thc stane filter becomcs clogged with sediment,the stones <br /> must be pulled away fram the inlet and c(eancd or;cptaced. Since cleaning of gravel at a <br /> consWction site may be di�cult,an altemative app;oach would be to use the clogged stooc as <br /> fill and put &esh stone aznund the in1eL <br /> 3. Do not wash sedimcnt iolo stortn drains whilc dcaning. Sprcad all cxcavated matcrial cvenly <br /> over thc surtoundin�;land area or stockpile and stebilize as app�op•ia�e. <br /> 3.3.12 BMP C230: Straw Bala Barrier <br /> Purpose <br /> I. To decrease the velociry of shect Oows and inmrcept and detain smali amoums of sedimcnt irom <br /> disturbed arcas of limited extent,preventing sediment from leaving thc sitc. Sce tigurc 3.3. <br /> 2. Below disturbcd arcas subject to sheet and ril1 erosion. <br /> 3. Shaw bales ace among thc most uscd and leas[eftective B1iPs. Thc bcst usc of a straw balc is <br /> hand sprea%on Ihe site. <br /> Volume �I—ConsWction StormwaterPollution Prevention <br /> 3-51 <br />� <br /> � <br />